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-libdavs2        enable AVS2 decoding via libdavs2 [no]
 230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 231                            and libraw1394 [no]
 232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 237   --enable-libgme          enable Game Music Emu via libgme [no]
 238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 240   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 241   --enable-libjack         enable JACK audio sound server [no]
 242   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 243   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 244   --enable-liblensfun      enable lensfun lens correction [no]
 245   --enable-libmodplug      enable ModPlug via libmodplug [no]
 246   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 247   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 248   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 249   --enable-libopencv       enable video filtering via libopencv [no]
 250   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 251   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 252   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 253   --enable-libopus         enable Opus de/encoding via libopus [no]
 254   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 255   --enable-librsvg         enable SVG rasterization via librsvg [no]
 256   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 257   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 258   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 259   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 260   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 261   --enable-libsoxr         enable Include libsoxr resampling [no]
 262   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 263   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 264   --enable-libssh          enable SFTP protocol via libssh [no]
 265   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 266                            for DNN based filters like sr [no]
 267   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 268   --enable-libtheora       enable Theora encoding via libtheora [no]
 269   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 270                            if openssl, gnutls or mbedtls is not used [no]
 271   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 272   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 273   --enable-libvidstab      enable video stabilization using vid.stab [no]
 274   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 275   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 276   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 277                            native implementation exists [no]
 278   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 279   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 280   --enable-libwebp         enable WebP encoding via libwebp [no]
 281   --enable-libx264         enable H.264 encoding via x264 [no]
 282   --enable-libx265         enable HEVC encoding via x265 [no]
 283   --enable-libxavs         enable AVS encoding via xavs [no]
 284   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 285   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 286   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 287   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 288   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 289   --enable-libxvid         enable Xvid encoding via xvidcore,
 290                            native MPEG-4/Xvid encoder exists [no]
 291   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 292                            for dash demuxing support [no]
 293   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 294   --enable-libzmq          enable message passing via libzmq [no]
 295   --enable-libzvbi         enable teletext support via libzvbi [no]
 296   --enable-lv2             enable LV2 audio filtering [no]
 297   --disable-lzma           disable lzma [autodetect]
 298   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 299   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 300   --enable-mbedtls         enable mbedTLS, needed for https support
 301                            if openssl, gnutls or libtls is not used [no]
 302   --enable-mediacodec      enable Android MediaCodec support [no]
 303   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 304   --enable-openal          enable OpenAL 1.1 capture support [no]
 305   --enable-opencl          enable OpenCL processing [no]
 306   --enable-opengl          enable OpenGL rendering [no]
 307   --enable-openssl         enable openssl, needed for https support
 308                            if gnutls, libtls or mbedtls is not used [no]
 309   --disable-sndio          disable sndio support [autodetect]
 310   --disable-schannel       disable SChannel SSP, needed for TLS support on
 311                            Windows if openssl and gnutls are not used [autodetect]
 312   --disable-sdl2           disable sdl2 [autodetect]
 313   --disable-securetransport disable Secure Transport, needed for TLS support
 314                            on OSX if openssl and gnutls are not used [autodetect]
 315   --enable-vapoursynth     enable VapourSynth demuxer [no]
 316   --disable-xlib           disable xlib [autodetect]
 317   --disable-zlib           disable zlib [autodetect]
 318
 319   The following libraries provide various hardware acceleration features:
 320   --disable-amf            disable AMF video encoding code [autodetect]
 321   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 322   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 323   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 324   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 325   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 326   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 327   --enable-libdrm          enable DRM code (Linux) [no]
 328   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 329   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 330   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 331   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 332   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 333   --enable-omx             enable OpenMAX IL code [no]
 334   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 335   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 336   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 337   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 338   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 339   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 340
 341 Toolchain options:
 342   --arch=ARCH              select architecture [$arch]
 343   --cpu=CPU                select the minimum required CPU (affects
 344                            instruction selection, may crash on older CPUs)
 345   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 346   --progs-suffix=SUFFIX    program name suffix []
 347   --enable-cross-compile   assume a cross-compiler is used
 348   --sysroot=PATH           root of cross-build tree
 349   --sysinclude=PATH        location of cross-build system headers
 350   --target-os=OS           compiler targets OS [$target_os]
 351   --target-exec=CMD        command to run executables on target
 352   --target-path=DIR        path to view of build directory on target
 353   --target-samples=DIR     path to samples directory on target
 354   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 355   --toolchain=NAME         set tool defaults according to NAME
 356                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 357                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 358                            valgrind-massif, valgrind-memcheck,
 359                            msvc, icl, gcov, llvm-cov, hardened)
 360   --nm=NM                  use nm tool NM [$nm_default]
 361   --ar=AR                  use archive tool AR [$ar_default]
 362   --as=AS                  use assembler AS [$as_default]
 363   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 364   --strip=STRIP            use strip tool STRIP [$strip_default]
 365   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 366   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 367   --cc=CC                  use C compiler CC [$cc_default]
 368   --cxx=CXX                use C compiler CXX [$cxx_default]
 369   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 370   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 371   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 372   --ld=LD                  use linker LD [$ld_default]
 373   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 374   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 375   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 376   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 377   --host-cc=HOSTCC         use host C compiler HOSTCC
 378   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 379   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 380   --host-ld=HOSTLD         use host linker HOSTLD
 381   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 382   --host-libs=HLIBS        use libs HLIBS when linking for host
 383   --host-os=OS             compiler host OS [$target_os]
 384   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 385   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 386   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 387   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 388   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 389   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 390   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 391   --extra-version=STRING   version string suffix []
 392   --optflags=OPTFLAGS      override optimization-related compiler flags
 393   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 394   --build-suffix=SUFFIX    library name suffix []
 395   --enable-pic             build position-independent code
 396   --enable-thumb           compile for Thumb instruction set
 397   --enable-lto             use link-time optimization
 398   --env="ENV=override"     override the environment variables
 399
 400 Advanced options (experts only):
 401   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 402   --custom-allocator=NAME  use a supported custom allocator
 403   --disable-symver         disable symbol versioning
 404   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 405   --disable-safe-bitstream-reader
 406                            disable buffer boundary checking in bitreaders
 407                            (faster, but may crash)
 408   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 409
 410 Optimization options (experts only):
 411   --disable-asm            disable all assembly optimizations
 412   --disable-altivec        disable AltiVec optimizations
 413   --disable-vsx            disable VSX optimizations
 414   --disable-power8         disable POWER8 optimizations
 415   --disable-amd3dnow       disable 3DNow! optimizations
 416   --disable-amd3dnowext    disable 3DNow! extended optimizations
 417   --disable-mmx            disable MMX optimizations
 418   --disable-mmxext         disable MMXEXT optimizations
 419   --disable-sse            disable SSE optimizations
 420   --disable-sse2           disable SSE2 optimizations
 421   --disable-sse3           disable SSE3 optimizations
 422   --disable-ssse3          disable SSSE3 optimizations
 423   --disable-sse4           disable SSE4 optimizations
 424   --disable-sse42          disable SSE4.2 optimizations
 425   --disable-avx            disable AVX optimizations
 426   --disable-xop            disable XOP optimizations
 427   --disable-fma3           disable FMA3 optimizations
 428   --disable-fma4           disable FMA4 optimizations
 429   --disable-avx2           disable AVX2 optimizations
 430   --disable-avx512         disable AVX-512 optimizations
 431   --disable-aesni          disable AESNI optimizations
 432   --disable-armv5te        disable armv5te optimizations
 433   --disable-armv6          disable armv6 optimizations
 434   --disable-armv6t2        disable armv6t2 optimizations
 435   --disable-vfp            disable VFP optimizations
 436   --disable-neon           disable NEON optimizations
 437   --disable-inline-asm     disable use of inline assembly
 438   --disable-x86asm         disable use of standalone x86 assembly
 439   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 440   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 441   --disable-msa            disable MSA optimizations
 442   --disable-mipsfpu        disable floating point MIPS optimizations
 443   --disable-mmi            disable Loongson SIMD optimizations
 444   --disable-fast-unaligned consider unaligned accesses slow
 445
 446 Developer options (useful when working on FFmpeg itself):
 447   --disable-debug          disable debugging symbols
 448   --enable-debug=LEVEL     set the debug level [$debuglevel]
 449   --disable-optimizations  disable compiler optimizations
 450   --enable-extra-warnings  enable more compiler warnings
 451   --disable-stripping      disable stripping of executables and shared libraries
 452   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 453                            2 causes a slowdown at runtime.
 454   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 455   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 456                            leaks and errors, using the specified valgrind binary.
 457                            Cannot be combined with --target-exec
 458   --enable-ftrapv          Trap arithmetic overflows
 459   --samples=PATH           location of test samples for FATE, if not set use
 460                            \$FATE_SAMPLES at make invocation time.
 461   --enable-neon-clobber-test check NEON registers for clobbering (should be
 462                            used only for debugging purposes)
 463   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 464                            should be used only for debugging purposes)
 465   --enable-random          randomly enable/disable components
 466   --disable-random
 467   --enable-random=LIST     randomly enable/disable specific components or
 468   --disable-random=LIST    component groups. LIST is a comma-separated list
 469                            of NAME[:PROB] entries where NAME is a component
 470                            (group) and PROB the probability associated with
 471                            NAME (default 0.5).
 472   --random-seed=VALUE      seed value for --enable/disable-random
 473   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 474                            (only applies to --disable-optimizations builds)
 475   --enable-osfuzz          Enable building fuzzer tool
 476   --libfuzzer=PATH         path to libfuzzer
 477   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 478                            in the name) of tests whose result is ignored
 479   --enable-linux-perf      enable Linux Performance Monitor API
 480
 481 NOTE: Object files are built at the place where configure is launched.
 482 EOF
 483   exit 0
 484 }
 485
 486 if test -t 1 && which tput >/dev/null 2>&1; then
 487     ncolors=$(tput colors)
 488     if test -n "$ncolors" && test $ncolors -ge 8; then
 489         bold_color=$(tput bold)
 490         warn_color=$(tput setaf 3)
 491         error_color=$(tput setaf 1)
 492         reset_color=$(tput sgr0)
 493     fi
 494     # 72 used instead of 80 since that's the default of pr
 495     ncols=$(tput cols)
 496 fi
 497 : ${ncols:=72}
 498
 499 log(){
 500     echo "$@" >> $logfile
 501 }
 502
 503 log_file(){
 504     log BEGIN $1
 505     pr -n -t $1 >> $logfile
 506     log END $1
 507 }
 508
 509 warn(){
 510     log "WARNING: $*"
 511     WARNINGS="${WARNINGS}WARNING: $*\n"
 512 }
 513
 514 die(){
 515     log "$@"
 516     echo "$error_color$bold_color$@$reset_color"
 517     cat <<EOF
 518
 519 If you think configure made a mistake, make sure you are using the latest
 520 version from Git.  If the latest version fails, report the problem to the
 521 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 522 EOF
 523     if disabled logging; then
 524         cat <<EOF
 525 Rerun configure with logging enabled (do not use --disable-logging), and
 526 include the log this produces with your report.
 527 EOF
 528     else
 529         cat <<EOF
 530 Include the log file "$logfile" produced by configure as this will help
 531 solve the problem.
 532 EOF
 533     fi
 534     exit 1
 535 }
 536
 537 # Avoid locale weirdness, besides we really just want to translate ASCII.
 538 toupper(){
 539     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 540 }
 541
 542 tolower(){
 543     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 544 }
 545
 546 c_escape(){
 547     echo "$*" | sed 's/["\\]/\\\0/g'
 548 }
 549
 550 sh_quote(){
 551     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 552     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 553     echo "$v"
 554 }
 555
 556 cleanws(){
 557     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 558 }
 559
 560 filter(){
 561     pat=$1
 562     shift
 563     for v; do
 564         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 565     done
 566 }
 567
 568 filter_out(){
 569     pat=$1
 570     shift
 571     for v; do
 572         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 573     done
 574 }
 575
 576 map(){
 577     m=$1
 578     shift
 579     for v; do eval $m; done
 580 }
 581
 582 add_suffix(){
 583     suffix=$1
 584     shift
 585     for v; do echo ${v}${suffix}; done
 586 }
 587
 588 remove_suffix(){
 589     suffix=$1
 590     shift
 591     for v; do echo ${v%$suffix}; done
 592 }
 593
 594 set_all(){
 595     value=$1
 596     shift
 597     for var in $*; do
 598         eval $var=$value
 599     done
 600 }
 601
 602 set_weak(){
 603     value=$1
 604     shift
 605     for var; do
 606         eval : \${$var:=$value}
 607     done
 608 }
 609
 610 sanitize_var_name(){
 611     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 612 }
 613
 614 set_sanitized(){
 615     var=$1
 616     shift
 617     eval $(sanitize_var_name "$var")='$*'
 618 }
 619
 620 get_sanitized(){
 621     eval echo \$$(sanitize_var_name "$1")
 622 }
 623
 624 pushvar(){
 625     for pvar in $*; do
 626         eval level=\${${pvar}_level:=0}
 627         eval ${pvar}_${level}="\$$pvar"
 628         eval ${pvar}_level=$(($level+1))
 629     done
 630 }
 631
 632 popvar(){
 633     for pvar in $*; do
 634         eval level=\${${pvar}_level:-0}
 635         test $level = 0 && continue
 636         eval level=$(($level-1))
 637         eval $pvar="\${${pvar}_${level}}"
 638         eval ${pvar}_level=$level
 639         eval unset ${pvar}_${level}
 640     done
 641 }
 642
 643 request(){
 644     for var in $*; do
 645         eval ${var}_requested=yes
 646         eval $var=
 647     done
 648 }
 649
 650 enable(){
 651     set_all yes $*
 652 }
 653
 654 disable(){
 655     set_all no $*
 656 }
 657
 658 enable_weak(){
 659     set_weak yes $*
 660 }
 661
 662 disable_weak(){
 663     set_weak no $*
 664 }
 665
 666 enable_sanitized(){
 667     for var; do
 668         enable $(sanitize_var_name $var)
 669     done
 670 }
 671
 672 disable_sanitized(){
 673     for var; do
 674         disable $(sanitize_var_name $var)
 675     done
 676 }
 677
 678 do_enable_deep(){
 679     for var; do
 680         enabled $var && continue
 681         set -- $var
 682         eval enable_deep \$${var}_select
 683         var=$1
 684         eval enable_deep_weak \$${var}_suggest
 685     done
 686 }
 687
 688 enable_deep(){
 689     do_enable_deep $*
 690     enable $*
 691 }
 692
 693 enable_deep_weak(){
 694     for var; do
 695         disabled $var && continue
 696         set -- $var
 697         do_enable_deep $var
 698         var=$1
 699         enable_weak $var
 700     done
 701 }
 702
 703 requested(){
 704     test "${1#!}" = "$1" && op="=" || op="!="
 705     eval test "x\$${1#!}_requested" $op "xyes"
 706 }
 707
 708 enabled(){
 709     test "${1#!}" = "$1" && op="=" || op="!="
 710     eval test "x\$${1#!}" $op "xyes"
 711 }
 712
 713 disabled(){
 714     test "${1#!}" = "$1" && op="=" || op="!="
 715     eval test "x\$${1#!}" $op "xno"
 716 }
 717
 718 enabled_all(){
 719     for opt; do
 720         enabled $opt || return 1
 721     done
 722 }
 723
 724 disabled_all(){
 725     for opt; do
 726         disabled $opt || return 1
 727     done
 728 }
 729
 730 enabled_any(){
 731     for opt; do
 732         enabled $opt && return 0
 733     done
 734 }
 735
 736 disabled_any(){
 737     for opt; do
 738         disabled $opt && return 0
 739     done
 740     return 1
 741 }
 742
 743 set_default(){
 744     for opt; do
 745         eval : \${$opt:=\$${opt}_default}
 746     done
 747 }
 748
 749 is_in(){
 750     value=$1
 751     shift
 752     for var in $*; do
 753         [ $var = $value ] && return 0
 754     done
 755     return 1
 756 }
 757
 758 # The cfg loop is very hot (several thousands iterations), and in bash also
 759 # potentialy quite slow. Try to abort the iterations early, preferably without
 760 # calling functions. 70%+ of the time cfg is already done or without deps.
 761 check_deps(){
 762     for cfg; do
 763         eval [ x\$${cfg}_checking = xdone ] && continue
 764         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 765
 766         eval "
 767         dep_all=\$${cfg}_deps
 768         dep_any=\$${cfg}_deps_any
 769         dep_con=\$${cfg}_conflict
 770         dep_sel=\$${cfg}_select
 771         dep_sgs=\$${cfg}_suggest
 772         dep_ifa=\$${cfg}_if
 773         dep_ifn=\$${cfg}_if_any
 774         "
 775
 776         # most of the time here $cfg has no deps - avoid costly no-op work
 777         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 778             eval ${cfg}_checking=inprogress
 779
 780             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 781             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 782             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 783
 784             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 785             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 786             enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 787             enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 788             disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 789             disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 790
 791             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 792
 793             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 794                 # filter out library deps, these do not belong in extralibs
 795                 is_in $dep $LIBRARY_LIST && continue
 796                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 797             done
 798         fi
 799
 800         eval ${cfg}_checking=done
 801     done
 802 }
 803
 804 print_config(){
 805     pfx=$1
 806     files=$2
 807     shift 2
 808     map 'eval echo "$v \${$v:-no}"' "$@" |
 809     awk "BEGIN { split(\"$files\", files) }
 810         {
 811             c = \"$pfx\" toupper(\$1);
 812             v = \$2;
 813             sub(/yes/, 1, v);
 814             sub(/no/,  0, v);
 815             for (f in files) {
 816                 file = files[f];
 817                 if (file ~ /\\.h\$/) {
 818                     printf(\"#define %s %d\\n\", c, v) >>file;
 819                 } else if (file ~ /\\.asm\$/) {
 820                     printf(\"%%define %s %d\\n\", c, v) >>file;
 821                 } else if (file ~ /\\.mak\$/) {
 822                     n = -v ? \"\" : \"!\";
 823                     printf(\"%s%s=yes\\n\", n, c) >>file;
 824                 } else if (file ~ /\\.texi\$/) {
 825                     pre = -v ? \"\" : \"@c \";
 826                     yesno = \$2;
 827                     c2 = tolower(c);
 828                     gsub(/_/, \"-\", c2);
 829                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 830                 }
 831             }
 832         }"
 833 }
 834
 835 print_enabled(){
 836     suf=$1
 837     shift
 838     for v; do
 839         enabled $v && printf "%s\n" ${v%$suf}
 840     done
 841 }
 842
 843 append(){
 844     var=$1
 845     shift
 846     eval "$var=\"\$$var $*\""
 847 }
 848
 849 prepend(){
 850     var=$1
 851     shift
 852     eval "$var=\"$* \$$var\""
 853 }
 854
 855 reverse () {
 856     eval '
 857         reverse_out=
 858         for v in $'$1'; do
 859             reverse_out="$v $reverse_out"
 860         done
 861         '$1'=$reverse_out
 862     '
 863 }
 864
 865 # keeps the last occurence of each non-unique item
 866 unique(){
 867     unique_out=
 868     eval unique_in=\$$1
 869     reverse unique_in
 870     for v in $unique_in; do
 871         # " $unique_out" +space such that every item is surrounded with spaces
 872         case " $unique_out" in *" $v "*) continue; esac  # already in list
 873         unique_out="$unique_out$v "
 874     done
 875     reverse unique_out
 876     eval $1=\$unique_out
 877 }
 878
 879 resolve(){
 880     resolve_out=
 881     eval resolve_in=\$$1
 882     for v in $resolve_in; do
 883         eval 'resolve_out="$resolve_out$'$v' "'
 884     done
 885     eval $1=\$resolve_out
 886 }
 887
 888 add_cppflags(){
 889     append CPPFLAGS "$@"
 890 }
 891
 892 add_cflags(){
 893     append CFLAGS $($cflags_filter "$@")
 894 }
 895
 896 add_cflags_headers(){
 897     append CFLAGS_HEADERS $($cflags_filter "$@")
 898 }
 899
 900 add_cxxflags(){
 901     append CXXFLAGS $($cflags_filter "$@")
 902 }
 903
 904 add_objcflags(){
 905     append OBJCFLAGS $($objcflags_filter "$@")
 906 }
 907
 908 add_asflags(){
 909     append ASFLAGS $($asflags_filter "$@")
 910 }
 911
 912 add_ldflags(){
 913     append LDFLAGS $($ldflags_filter "$@")
 914 }
 915
 916 add_ldexeflags(){
 917     append LDEXEFLAGS $($ldflags_filter "$@")
 918 }
 919
 920 add_ldsoflags(){
 921     append LDSOFLAGS $($ldflags_filter "$@")
 922 }
 923
 924 add_extralibs(){
 925     prepend extralibs $($ldflags_filter "$@")
 926 }
 927
 928 add_stripflags(){
 929     append ASMSTRIPFLAGS "$@"
 930 }
 931
 932 add_host_cppflags(){
 933     append host_cppflags "$@"
 934 }
 935
 936 add_host_cflags(){
 937     append host_cflags $($host_cflags_filter "$@")
 938 }
 939
 940 add_host_ldflags(){
 941     append host_ldflags $($host_ldflags_filter "$@")
 942 }
 943
 944 add_compat(){
 945     append compat_objs $1
 946     shift
 947     map 'add_cppflags -D$v' "$@"
 948 }
 949
 950 test_cmd(){
 951     log "$@"
 952     "$@" >> $logfile 2>&1
 953 }
 954
 955 test_stat(){
 956     log test_stat "$@"
 957     stat "$1" >> $logfile 2>&1
 958 }
 959
 960 cc_e(){
 961     eval printf '%s\\n' $CC_E
 962 }
 963
 964 cc_o(){
 965     eval printf '%s\\n' $CC_O
 966 }
 967
 968 as_o(){
 969     eval printf '%s\\n' $AS_O
 970 }
 971
 972 x86asm_o(){
 973     eval printf '%s\\n' $X86ASM_O
 974 }
 975
 976 ld_o(){
 977     eval printf '%s\\n' $LD_O
 978 }
 979
 980 hostcc_e(){
 981     eval printf '%s\\n' $HOSTCC_E
 982 }
 983
 984 hostcc_o(){
 985     eval printf '%s\\n' $HOSTCC_O
 986 }
 987
 988 test_cc(){
 989     log test_cc "$@"
 990     cat > $TMPC
 991     log_file $TMPC
 992     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 993 }
 994
 995 test_cxx(){
 996     log test_cxx "$@"
 997     cat > $TMPCPP
 998     log_file $TMPCPP
 999     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1000 }
1001
1002 test_objcc(){
1003     log test_objcc "$@"
1004     cat > $TMPM
1005     log_file $TMPM
1006     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1007 }
1008
1009 test_cpp(){
1010     log test_cpp "$@"
1011     cat > $TMPC
1012     log_file $TMPC
1013     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1014 }
1015
1016 test_as(){
1017     log test_as "$@"
1018     cat > $TMPS
1019     log_file $TMPS
1020     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1021 }
1022
1023 test_x86asm(){
1024     log test_x86asm "$@"
1025     echo "$1" > $TMPASM
1026     log_file $TMPASM
1027     shift
1028     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1029 }
1030
1031 check_cmd(){
1032     log check_cmd "$@"
1033     cmd=$1
1034     disabled $cmd && return
1035     disable $cmd
1036     test_cmd $@ && enable $cmd
1037 }
1038
1039 check_as(){
1040     log check_as "$@"
1041     name=$1
1042     code=$2
1043     shift 2
1044     disable $name
1045     test_as $@ <<EOF && enable $name
1046 $code
1047 EOF
1048 }
1049
1050 check_inline_asm(){
1051     log check_inline_asm "$@"
1052     name="$1"
1053     code="$2"
1054     shift 2
1055     disable $name
1056     test_cc "$@" <<EOF && enable $name
1057 void foo(void){ __asm__ volatile($code); }
1058 EOF
1059 }
1060
1061 check_inline_asm_flags(){
1062     log check_inline_asm_flags "$@"
1063     name="$1"
1064     code="$2"
1065     flags=''
1066     shift 2
1067     while [ "$1" != "" ]; do
1068       append flags $1
1069       shift
1070     done;
1071     disable $name
1072     cat > $TMPC <<EOF
1073 void foo(void){ __asm__ volatile($code); }
1074 EOF
1075     log_file $TMPC
1076     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1077     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1078 }
1079
1080 check_insn(){
1081     log check_insn "$@"
1082     check_inline_asm ${1}_inline "\"$2\""
1083     check_as ${1}_external "$2"
1084 }
1085
1086 check_x86asm(){
1087     log check_x86asm "$@"
1088     name=$1
1089     shift
1090     disable $name
1091     test_x86asm "$@" && enable $name
1092 }
1093
1094 test_ld(){
1095     log test_ld "$@"
1096     type=$1
1097     shift 1
1098     flags=$(filter_out '-l*|*.so' $@)
1099     libs=$(filter '-l*|*.so' $@)
1100     test_$type $($cflags_filter $flags) || return
1101     flags=$($ldflags_filter $flags)
1102     libs=$($ldflags_filter $libs)
1103     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1104 }
1105
1106 check_ld(){
1107     log check_ld "$@"
1108     type=$1
1109     name=$2
1110     shift 2
1111     disable $name
1112     test_ld $type $@ && enable $name
1113 }
1114
1115 print_include(){
1116     hdr=$1
1117     test "${hdr%.h}" = "${hdr}" &&
1118         echo "#include $hdr"    ||
1119         echo "#include <$hdr>"
1120 }
1121
1122 test_code(){
1123     log test_code "$@"
1124     check=$1
1125     headers=$2
1126     code=$3
1127     shift 3
1128     {
1129         for hdr in $headers; do
1130             print_include $hdr
1131         done
1132         echo "int main(void) { $code; return 0; }"
1133     } | test_$check "$@"
1134 }
1135
1136 check_cppflags(){
1137     log check_cppflags "$@"
1138     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1139 #include <stdlib.h>
1140 EOF
1141 }
1142
1143 test_cflags(){
1144     log test_cflags "$@"
1145     set -- $($cflags_filter "$@")
1146     test_cc "$@" <<EOF
1147 int x;
1148 EOF
1149 }
1150
1151 check_cflags(){
1152     log check_cflags "$@"
1153     test_cflags "$@" && add_cflags "$@"
1154 }
1155
1156 check_cxxflags(){
1157     log check_cxxflags "$@"
1158     set -- $($cflags_filter "$@")
1159     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1160 int x;
1161 EOF
1162 }
1163
1164 test_objcflags(){
1165     log test_objcflags "$@"
1166     set -- $($objcflags_filter "$@")
1167     test_objcc "$@" <<EOF
1168 int x;
1169 EOF
1170 }
1171
1172 check_objcflags(){
1173     log check_objcflags "$@"
1174     test_objcflags "$@" && add_objcflags "$@"
1175 }
1176
1177 test_ldflags(){
1178     log test_ldflags "$@"
1179     set -- $($ldflags_filter "$@")
1180     test_ld "cc" "$@" <<EOF
1181 int main(void){ return 0; }
1182 EOF
1183 }
1184
1185 check_ldflags(){
1186     log check_ldflags "$@"
1187     test_ldflags "$@" && add_ldflags "$@"
1188 }
1189
1190 test_stripflags(){
1191     log test_stripflags "$@"
1192     # call test_cc to get a fresh TMPO
1193     test_cc <<EOF
1194 int main(void) { return 0; }
1195 EOF
1196     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1197 }
1198
1199 check_stripflags(){
1200     log check_stripflags "$@"
1201     test_stripflags "$@" && add_stripflags "$@"
1202 }
1203
1204 check_headers(){
1205     log check_headers "$@"
1206     headers=$1
1207     shift
1208     disable_sanitized $headers
1209     {
1210         for hdr in $headers; do
1211             print_include $hdr
1212         done
1213         echo "int x;"
1214     } | test_cpp "$@" && enable_sanitized $headers
1215 }
1216
1217 check_header_objcc(){
1218     log check_header_objcc "$@"
1219     rm -f -- "$TMPO"
1220     header=$1
1221     shift
1222     disable_sanitized $header
1223     {
1224        echo "#include <$header>"
1225        echo "int main(void) { return 0; }"
1226     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1227 }
1228
1229 check_apple_framework(){
1230     log check_apple_framework "$@"
1231     framework="$1"
1232     name="$(tolower $framework)"
1233     header="${framework}/${framework}.h"
1234     disable $name
1235     check_header_objcc $header &&
1236         enable $name && eval ${name}_extralibs='"-framework $framework"'
1237 }
1238
1239 check_func(){
1240     log check_func "$@"
1241     func=$1
1242     shift
1243     disable $func
1244     test_ld "cc" "$@" <<EOF && enable $func
1245 extern int $func();
1246 int main(void){ $func(); }
1247 EOF
1248 }
1249
1250 check_complexfunc(){
1251     log check_complexfunc "$@"
1252     func=$1
1253     narg=$2
1254     shift 2
1255     test $narg = 2 && args="f, g" || args="f * I"
1256     disable $func
1257     test_ld "cc" "$@" <<EOF && enable $func
1258 #include <complex.h>
1259 #include <math.h>
1260 float foo(complex float f, complex float g) { return $func($args); }
1261 int main(void){ return (int) foo; }
1262 EOF
1263 }
1264
1265 check_mathfunc(){
1266     log check_mathfunc "$@"
1267     func=$1
1268     narg=$2
1269     shift 2
1270     test $narg = 2 && args="f, g" || args="f"
1271     disable $func
1272     test_ld "cc" "$@" <<EOF && enable $func
1273 #include <math.h>
1274 float foo(float f, float g) { return $func($args); }
1275 int main(void){ return (int) foo; }
1276 EOF
1277 }
1278
1279 check_func_headers(){
1280     log check_func_headers "$@"
1281     headers=$1
1282     funcs=$2
1283     shift 2
1284     {
1285         for hdr in $headers; do
1286             print_include $hdr
1287         done
1288         echo "#include <stdint.h>"
1289         for func in $funcs; do
1290             echo "long check_$func(void) { return (long) $func; }"
1291         done
1292         echo "int main(void) { int ret = 0;"
1293         # LTO could optimize out the test functions without this
1294         for func in $funcs; do
1295             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1296         done
1297         echo "return ret; }"
1298     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1299 }
1300
1301 check_class_headers_cpp(){
1302     log check_class_headers_cpp "$@"
1303     headers=$1
1304     classes=$2
1305     shift 2
1306     {
1307         for hdr in $headers; do
1308             echo "#include <$hdr>"
1309         done
1310         echo "int main(void) { "
1311         i=1
1312         for class in $classes; do
1313             echo "$class obj$i;"
1314             i=$(expr $i + 1)
1315         done
1316         echo "return 0; }"
1317     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1318 }
1319
1320 test_cpp_condition(){
1321     log test_cpp_condition "$@"
1322     header=$1
1323     condition=$2
1324     shift 2
1325     test_cpp "$@" <<EOF
1326 #include <$header>
1327 #if !($condition)
1328 #error "unsatisfied condition: $condition"
1329 #endif
1330 EOF
1331 }
1332
1333 check_cpp_condition(){
1334     log check_cpp_condition "$@"
1335     name=$1
1336     shift 1
1337     disable $name
1338     test_cpp_condition "$@" && enable $name
1339 }
1340
1341 test_cflags_cc(){
1342     log test_cflags_cc "$@"
1343     flags=$1
1344     header=$2
1345     condition=$3
1346     shift 3
1347     set -- $($cflags_filter "$flags")
1348     test_cc "$@" <<EOF
1349 #include <$header>
1350 #if !($condition)
1351 #error "unsatisfied condition: $condition"
1352 #endif
1353 EOF
1354 }
1355
1356 check_lib(){
1357     log check_lib "$@"
1358     name="$1"
1359     headers="$2"
1360     funcs="$3"
1361     shift 3
1362     disable $name
1363     check_func_headers "$headers" "$funcs" "$@" &&
1364         enable $name && eval ${name}_extralibs="\$@"
1365 }
1366
1367 check_lib_cpp(){
1368     log check_lib_cpp "$@"
1369     name="$1"
1370     headers="$2"
1371     classes="$3"
1372     shift 3
1373     disable $name
1374     check_class_headers_cpp "$headers" "$classes" "$@" &&
1375         enable $name && eval ${name}_extralibs="\$@"
1376 }
1377
1378 test_pkg_config(){
1379     log test_pkg_config "$@"
1380     name="$1"
1381     pkg_version="$2"
1382     pkg="${2%% *}"
1383     headers="$3"
1384     funcs="$4"
1385     shift 4
1386     disable $name
1387     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1388     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1389     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1390     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1391         enable $name &&
1392         set_sanitized "${name}_cflags"    $pkg_cflags &&
1393         set_sanitized "${name}_extralibs" $pkg_libs
1394 }
1395
1396 check_pkg_config(){
1397     log check_pkg_config "$@"
1398     name="$1"
1399     test_pkg_config "$@" &&
1400         eval add_cflags \$${name}_cflags
1401 }
1402
1403 test_exec(){
1404     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1405 }
1406
1407 check_exec_crash(){
1408     log check_exec_crash "$@"
1409     code=$(cat)
1410
1411     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1412     # are safe but may not be available everywhere.  Thus we use
1413     # raise(SIGTERM) instead.  The check is run in a subshell so we
1414     # can redirect the "Terminated" message from the shell.  SIGBUS
1415     # is not defined by standard C so it is used conditionally.
1416
1417     (test_exec "$@") >> $logfile 2>&1 <<EOF
1418 #include <signal.h>
1419 static void sighandler(int sig){
1420     raise(SIGTERM);
1421 }
1422 int foo(void){
1423     $code
1424 }
1425 int (*func_ptr)(void) = foo;
1426 int main(void){
1427     signal(SIGILL, sighandler);
1428     signal(SIGFPE, sighandler);
1429     signal(SIGSEGV, sighandler);
1430 #ifdef SIGBUS
1431     signal(SIGBUS, sighandler);
1432 #endif
1433     return func_ptr();
1434 }
1435 EOF
1436 }
1437
1438 check_type(){
1439     log check_type "$@"
1440     headers=$1
1441     type=$2
1442     shift 2
1443     disable_sanitized "$type"
1444     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1445 }
1446
1447 check_struct(){
1448     log check_struct "$@"
1449     headers=$1
1450     struct=$2
1451     member=$3
1452     shift 3
1453     disable_sanitized "${struct}_${member}"
1454     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1455         enable_sanitized "${struct}_${member}"
1456 }
1457
1458 check_builtin(){
1459     log check_builtin "$@"
1460     name=$1
1461     headers=$2
1462     builtin=$3
1463     shift 3
1464     disable "$name"
1465     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1466 }
1467
1468 check_compile_assert(){
1469     log check_compile_assert "$@"
1470     name=$1
1471     headers=$2
1472     condition=$3
1473     shift 3
1474     disable "$name"
1475     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1476 }
1477
1478 check_cc(){
1479     log check_cc "$@"
1480     name=$1
1481     shift
1482     disable "$name"
1483     test_code cc "$@" && enable "$name"
1484 }
1485
1486 require(){
1487     log require "$@"
1488     name_version="$1"
1489     name="${1%% *}"
1490     shift
1491     check_lib $name "$@" || die "ERROR: $name_version not found"
1492 }
1493
1494 require_cc(){
1495     log require_cc "$@"
1496     name="$1"
1497     check_cc "$@" || die "ERROR: $name failed"
1498 }
1499
1500 require_cpp(){
1501     name="$1"
1502     headers="$2"
1503     classes="$3"
1504     shift 3
1505     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1506 }
1507
1508 require_headers(){
1509     log require_headers "$@"
1510     headers="$1"
1511     check_headers "$@" || die "ERROR: $headers not found"
1512 }
1513
1514 require_cpp_condition(){
1515     log require_cpp_condition "$@"
1516     condition="$3"
1517     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1518 }
1519
1520 require_pkg_config(){
1521     log require_pkg_config "$@"
1522     pkg_version="$2"
1523     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1524 }
1525
1526 test_host_cc(){
1527     log test_host_cc "$@"
1528     cat > $TMPC
1529     log_file $TMPC
1530     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1531 }
1532
1533 test_host_cpp(){
1534     log test_host_cpp "$@"
1535     cat > $TMPC
1536     log_file $TMPC
1537     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1538 }
1539
1540 check_host_cppflags(){
1541     log check_host_cppflags "$@"
1542     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1543 #include <stdlib.h>
1544 EOF
1545 }
1546
1547 check_host_cflags(){
1548     log check_host_cflags "$@"
1549     set -- $($host_cflags_filter "$@")
1550     test_host_cc "$@" <<EOF && append host_cflags "$@"
1551 int x;
1552 EOF
1553 }
1554
1555 test_host_cpp_condition(){
1556     log test_host_cpp_condition "$@"
1557     header=$1
1558     condition=$2
1559     shift 2
1560     test_host_cpp "$@" <<EOF
1561 #include <$header>
1562 #if !($condition)
1563 #error "unsatisfied condition: $condition"
1564 #endif
1565 EOF
1566 }
1567
1568 check_host_cpp_condition(){
1569     log check_host_cpp_condition "$@"
1570     name=$1
1571     shift 1
1572     disable $name
1573     test_host_cpp_condition "$@" && enable $name
1574 }
1575
1576 cp_if_changed(){
1577     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1578     mkdir -p "$(dirname $2)"
1579     cp -f "$1" "$2"
1580 }
1581
1582 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1583 # system-dependent things.
1584
1585 AVCODEC_COMPONENTS="
1586     bsfs
1587     decoders
1588     encoders
1589     hwaccels
1590     parsers
1591 "
1592
1593 AVDEVICE_COMPONENTS="
1594     indevs
1595     outdevs
1596 "
1597
1598 AVFILTER_COMPONENTS="
1599     filters
1600 "
1601
1602 AVFORMAT_COMPONENTS="
1603     demuxers
1604     muxers
1605     protocols
1606 "
1607
1608 COMPONENT_LIST="
1609     $AVCODEC_COMPONENTS
1610     $AVDEVICE_COMPONENTS
1611     $AVFILTER_COMPONENTS
1612     $AVFORMAT_COMPONENTS
1613 "
1614
1615 EXAMPLE_LIST="
1616     avio_dir_cmd_example
1617     avio_reading_example
1618     decode_audio_example
1619     decode_video_example
1620     demuxing_decoding_example
1621     encode_audio_example
1622     encode_video_example
1623     extract_mvs_example
1624     filter_audio_example
1625     filtering_audio_example
1626     filtering_video_example
1627     http_multiclient_example
1628     hw_decode_example
1629     metadata_example
1630     muxing_example
1631     qsvdec_example
1632     remuxing_example
1633     resampling_audio_example
1634     scaling_video_example
1635     transcode_aac_example
1636     transcoding_example
1637     vaapi_encode_example
1638     vaapi_transcode_example
1639 "
1640
1641 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1642     alsa
1643     appkit
1644     avfoundation
1645     bzlib
1646     coreimage
1647     iconv
1648     libxcb
1649     libxcb_shm
1650     libxcb_shape
1651     libxcb_xfixes
1652     lzma
1653     schannel
1654     sdl2
1655     securetransport
1656     sndio
1657     xlib
1658     zlib
1659 "
1660
1661 EXTERNAL_LIBRARY_GPL_LIST="
1662     avisynth
1663     frei0r
1664     libcdio
1665     libdavs2
1666     librubberband
1667     libvidstab
1668     libx264
1669     libx265
1670     libxavs
1671     libxavs2
1672     libxvid
1673 "
1674
1675 EXTERNAL_LIBRARY_NONFREE_LIST="
1676     decklink
1677     libndi_newtek
1678     libfdk_aac
1679     openssl
1680     libtls
1681 "
1682
1683 EXTERNAL_LIBRARY_VERSION3_LIST="
1684     gmp
1685     liblensfun
1686     libopencore_amrnb
1687     libopencore_amrwb
1688     libvmaf
1689     libvo_amrwbenc
1690     mbedtls
1691     rkmpp
1692 "
1693
1694 EXTERNAL_LIBRARY_GPLV3_LIST="
1695     libsmbclient
1696 "
1697
1698 EXTERNAL_LIBRARY_LIST="
1699     $EXTERNAL_LIBRARY_GPL_LIST
1700     $EXTERNAL_LIBRARY_NONFREE_LIST
1701     $EXTERNAL_LIBRARY_VERSION3_LIST
1702     $EXTERNAL_LIBRARY_GPLV3_LIST
1703     chromaprint
1704     gcrypt
1705     gnutls
1706     jni
1707     ladspa
1708     libaom
1709     libass
1710     libbluray
1711     libbs2b
1712     libcaca
1713     libcelt
1714     libcodec2
1715     libdc1394
1716     libdrm
1717     libflite
1718     libfontconfig
1719     libfreetype
1720     libfribidi
1721     libgme
1722     libgsm
1723     libiec61883
1724     libilbc
1725     libjack
1726     libklvanc
1727     libkvazaar
1728     libmodplug
1729     libmp3lame
1730     libmysofa
1731     libopencv
1732     libopenh264
1733     libopenjpeg
1734     libopenmpt
1735     libopus
1736     libpulse
1737     librsvg
1738     librtmp
1739     libshine
1740     libsmbclient
1741     libsnappy
1742     libsoxr
1743     libspeex
1744     libsrt
1745     libssh
1746     libtensorflow
1747     libtesseract
1748     libtheora
1749     libtwolame
1750     libv4l2
1751     libvorbis
1752     libvpx
1753     libwavpack
1754     libwebp
1755     libxml2
1756     libzimg
1757     libzmq
1758     libzvbi
1759     lv2
1760     mediacodec
1761     openal
1762     opengl
1763     vapoursynth
1764 "
1765
1766 HWACCEL_AUTODETECT_LIBRARY_LIST="
1767     amf
1768     audiotoolbox
1769     crystalhd
1770     cuda
1771     cuvid
1772     d3d11va
1773     dxva2
1774     ffnvcodec
1775     nvdec
1776     nvenc
1777     vaapi
1778     vdpau
1779     videotoolbox
1780     v4l2_m2m
1781     xvmc
1782 "
1783
1784 # catchall list of things that require external libs to link
1785 EXTRALIBS_LIST="
1786     cpu_init
1787     cws2fws
1788 "
1789
1790 HWACCEL_LIBRARY_NONFREE_LIST="
1791     cuda_sdk
1792     libnpp
1793 "
1794
1795 HWACCEL_LIBRARY_LIST="
1796     $HWACCEL_LIBRARY_NONFREE_LIST
1797     libmfx
1798     mmal
1799     omx
1800     opencl
1801 "
1802
1803 DOCUMENT_LIST="
1804     doc
1805     htmlpages
1806     manpages
1807     podpages
1808     txtpages
1809 "
1810
1811 FEATURE_LIST="
1812     ftrapv
1813     gray
1814     hardcoded_tables
1815     omx_rpi
1816     runtime_cpudetect
1817     safe_bitstream_reader
1818     shared
1819     small
1820     static
1821     swscale_alpha
1822 "
1823
1824 # this list should be kept in linking order
1825 LIBRARY_LIST="
1826     avdevice
1827     avfilter
1828     swscale
1829     postproc
1830     avformat
1831     avcodec
1832     swresample
1833     avresample
1834     avutil
1835 "
1836
1837 LICENSE_LIST="
1838     gpl
1839     nonfree
1840     version3
1841 "
1842
1843 PROGRAM_LIST="
1844     ffplay
1845     ffprobe
1846     ffmpeg
1847 "
1848
1849 SUBSYSTEM_LIST="
1850     dct
1851     dwt
1852     error_resilience
1853     faan
1854     fast_unaligned
1855     fft
1856     lsp
1857     lzo
1858     mdct
1859     pixelutils
1860     network
1861     rdft
1862 "
1863
1864 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1865 CONFIG_LIST="
1866     $DOCUMENT_LIST
1867     $EXAMPLE_LIST
1868     $EXTERNAL_LIBRARY_LIST
1869     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1870     $HWACCEL_LIBRARY_LIST
1871     $HWACCEL_AUTODETECT_LIBRARY_LIST
1872     $FEATURE_LIST
1873     $LICENSE_LIST
1874     $LIBRARY_LIST
1875     $PROGRAM_LIST
1876     $SUBSYSTEM_LIST
1877     autodetect
1878     fontconfig
1879     linux_perf
1880     memory_poisoning
1881     neon_clobber_test
1882     ossfuzz
1883     pic
1884     thumb
1885     valgrind_backtrace
1886     xmm_clobber_test
1887     $COMPONENT_LIST
1888 "
1889
1890 THREADS_LIST="
1891     pthreads
1892     os2threads
1893     w32threads
1894 "
1895
1896 ATOMICS_LIST="
1897     atomics_gcc
1898     atomics_suncc
1899     atomics_win32
1900 "
1901
1902 AUTODETECT_LIBS="
1903     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1904     $HWACCEL_AUTODETECT_LIBRARY_LIST
1905     $THREADS_LIST
1906 "
1907
1908 ARCH_LIST="
1909     aarch64
1910     alpha
1911     arm
1912     avr32
1913     avr32_ap
1914     avr32_uc
1915     bfin
1916     ia64
1917     m68k
1918     mips
1919     mips64
1920     parisc
1921     ppc
1922     ppc64
1923     s390
1924     sh4
1925     sparc
1926     sparc64
1927     tilegx
1928     tilepro
1929     tomi
1930     x86
1931     x86_32
1932     x86_64
1933 "
1934
1935 ARCH_EXT_LIST_ARM="
1936     armv5te
1937     armv6
1938     armv6t2
1939     armv8
1940     neon
1941     vfp
1942     vfpv3
1943     setend
1944 "
1945
1946 ARCH_EXT_LIST_MIPS="
1947     mipsfpu
1948     mips32r2
1949     mips32r5
1950     mips64r2
1951     mips32r6
1952     mips64r6
1953     mipsdsp
1954     mipsdspr2
1955     msa
1956 "
1957
1958 ARCH_EXT_LIST_LOONGSON="
1959     loongson2
1960     loongson3
1961     mmi
1962 "
1963
1964 ARCH_EXT_LIST_X86_SIMD="
1965     aesni
1966     amd3dnow
1967     amd3dnowext
1968     avx
1969     avx2
1970     avx512
1971     fma3
1972     fma4
1973     mmx
1974     mmxext
1975     sse
1976     sse2
1977     sse3
1978     sse4
1979     sse42
1980     ssse3
1981     xop
1982 "
1983
1984 ARCH_EXT_LIST_PPC="
1985     altivec
1986     dcbzl
1987     ldbrx
1988     power8
1989     ppc4xx
1990     vsx
1991 "
1992
1993 ARCH_EXT_LIST_X86="
1994     $ARCH_EXT_LIST_X86_SIMD
1995     cpunop
1996     i686
1997 "
1998
1999 ARCH_EXT_LIST="
2000     $ARCH_EXT_LIST_ARM
2001     $ARCH_EXT_LIST_PPC
2002     $ARCH_EXT_LIST_X86
2003     $ARCH_EXT_LIST_MIPS
2004     $ARCH_EXT_LIST_LOONGSON
2005 "
2006
2007 ARCH_FEATURES="
2008     aligned_stack
2009     fast_64bit
2010     fast_clz
2011     fast_cmov
2012     local_aligned
2013     simd_align_16
2014     simd_align_32
2015     simd_align_64
2016 "
2017
2018 BUILTIN_LIST="
2019     atomic_cas_ptr
2020     machine_rw_barrier
2021     MemoryBarrier
2022     mm_empty
2023     rdtsc
2024     sem_timedwait
2025     sync_val_compare_and_swap
2026 "
2027 HAVE_LIST_CMDLINE="
2028     inline_asm
2029     symver
2030     x86asm
2031 "
2032
2033 HAVE_LIST_PUB="
2034     bigendian
2035     fast_unaligned
2036 "
2037
2038 HEADERS_LIST="
2039     arpa_inet_h
2040     asm_types_h
2041     cdio_paranoia_h
2042     cdio_paranoia_paranoia_h
2043     cuda_h
2044     dispatch_dispatch_h
2045     dev_bktr_ioctl_bt848_h
2046     dev_bktr_ioctl_meteor_h
2047     dev_ic_bt8xx_h
2048     dev_video_bktr_ioctl_bt848_h
2049     dev_video_meteor_ioctl_meteor_h
2050     direct_h
2051     dirent_h
2052     dxgidebug_h
2053     dxva_h
2054     ES2_gl_h
2055     gsm_h
2056     io_h
2057     linux_perf_event_h
2058     machine_ioctl_bt848_h
2059     machine_ioctl_meteor_h
2060     malloc_h
2061     opencv2_core_core_c_h
2062     OpenGL_gl3_h
2063     poll_h
2064     sys_param_h
2065     sys_resource_h
2066     sys_select_h
2067     sys_soundcard_h
2068     sys_time_h
2069     sys_un_h
2070     sys_videoio_h
2071     termios_h
2072     udplite_h
2073     unistd_h
2074     valgrind_valgrind_h
2075     windows_h
2076     winsock2_h
2077 "
2078
2079 INTRINSICS_LIST="
2080     intrinsics_neon
2081 "
2082
2083 COMPLEX_FUNCS="
2084     cabs
2085     cexp
2086 "
2087
2088 MATH_FUNCS="
2089     atanf
2090     atan2f
2091     cbrt
2092     cbrtf
2093     copysign
2094     cosf
2095     erf
2096     exp2
2097     exp2f
2098     expf
2099     hypot
2100     isfinite
2101     isinf
2102     isnan
2103     ldexpf
2104     llrint
2105     llrintf
2106     log2
2107     log2f
2108     log10f
2109     lrint
2110     lrintf
2111     powf
2112     rint
2113     round
2114     roundf
2115     sinf
2116     trunc
2117     truncf
2118 "
2119
2120 SYSTEM_FEATURES="
2121     dos_paths
2122     libc_msvcrt
2123     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2124     section_data_rel_ro
2125     threads
2126     uwp
2127     winrt
2128 "
2129
2130 SYSTEM_FUNCS="
2131     access
2132     aligned_malloc
2133     arc4random
2134     clock_gettime
2135     closesocket
2136     CommandLineToArgvW
2137     fcntl
2138     getaddrinfo
2139     gethrtime
2140     getopt
2141     GetProcessAffinityMask
2142     GetProcessMemoryInfo
2143     GetProcessTimes
2144     getrusage
2145     GetSystemTimeAsFileTime
2146     gettimeofday
2147     glob
2148     glXGetProcAddress
2149     gmtime_r
2150     inet_aton
2151     isatty
2152     kbhit
2153     localtime_r
2154     lstat
2155     lzo1x_999_compress
2156     mach_absolute_time
2157     MapViewOfFile
2158     memalign
2159     mkstemp
2160     mmap
2161     mprotect
2162     nanosleep
2163     PeekNamedPipe
2164     posix_memalign
2165     pthread_cancel
2166     sched_getaffinity
2167     SecItemImport
2168     SetConsoleTextAttribute
2169     SetConsoleCtrlHandler
2170     setmode
2171     setrlimit
2172     Sleep
2173     strerror_r
2174     sysconf
2175     sysctl
2176     usleep
2177     UTGetOSTypeFromString
2178     VirtualAlloc
2179     wglGetProcAddress
2180 "
2181
2182 SYSTEM_LIBRARIES="
2183     bcrypt
2184     vaapi_drm
2185     vaapi_x11
2186     vdpau_x11
2187 "
2188
2189 TOOLCHAIN_FEATURES="
2190     as_arch_directive
2191     as_dn_directive
2192     as_fpu_directive
2193     as_func
2194     as_object_arch
2195     asm_mod_q
2196     blocks_extension
2197     ebp_available
2198     ebx_available
2199     gnu_as
2200     gnu_windres
2201     ibm_asm
2202     inline_asm_direct_symbol_refs
2203     inline_asm_labels
2204     inline_asm_nonlocal_labels
2205     pragma_deprecated
2206     rsync_contimeout
2207     symver_asm_label
2208     symver_gnu_asm
2209     vfp_args
2210     xform_asm
2211     xmm_clobbers
2212 "
2213
2214 TYPES_LIST="
2215     kCMVideoCodecType_HEVC
2216     socklen_t
2217     struct_addrinfo
2218     struct_group_source_req
2219     struct_ip_mreq_source
2220     struct_ipv6_mreq
2221     struct_msghdr_msg_flags
2222     struct_pollfd
2223     struct_rusage_ru_maxrss
2224     struct_sctp_event_subscribe
2225     struct_sockaddr_in6
2226     struct_sockaddr_sa_len
2227     struct_sockaddr_storage
2228     struct_stat_st_mtim_tv_nsec
2229     struct_v4l2_frmivalenum_discrete
2230 "
2231
2232 HAVE_LIST="
2233     $ARCH_EXT_LIST
2234     $(add_suffix _external $ARCH_EXT_LIST)
2235     $(add_suffix _inline   $ARCH_EXT_LIST)
2236     $ARCH_FEATURES
2237     $BUILTIN_LIST
2238     $COMPLEX_FUNCS
2239     $HAVE_LIST_CMDLINE
2240     $HAVE_LIST_PUB
2241     $HEADERS_LIST
2242     $INTRINSICS_LIST
2243     $MATH_FUNCS
2244     $SYSTEM_FEATURES
2245     $SYSTEM_FUNCS
2246     $SYSTEM_LIBRARIES
2247     $THREADS_LIST
2248     $TOOLCHAIN_FEATURES
2249     $TYPES_LIST
2250     makeinfo
2251     makeinfo_html
2252     opencl_d3d11
2253     opencl_drm_arm
2254     opencl_drm_beignet
2255     opencl_dxva2
2256     opencl_vaapi_beignet
2257     opencl_vaapi_intel_media
2258     perl
2259     pod2man
2260     texi2html
2261 "
2262
2263 # options emitted with CONFIG_ prefix but not available on the command line
2264 CONFIG_EXTRA="
2265     aandcttables
2266     ac3dsp
2267     adts_header
2268     audio_frame_queue
2269     audiodsp
2270     blockdsp
2271     bswapdsp
2272     cabac
2273     cbs
2274     cbs_av1
2275     cbs_h264
2276     cbs_h265
2277     cbs_jpeg
2278     cbs_mpeg2
2279     cbs_vp9
2280     dirac_parse
2281     dnn
2282     dvprofile
2283     exif
2284     faandct
2285     faanidct
2286     fdctdsp
2287     flacdsp
2288     fmtconvert
2289     frame_thread_encoder
2290     g722dsp
2291     golomb
2292     gplv3
2293     h263dsp
2294     h264chroma
2295     h264dsp
2296     h264parse
2297     h264pred
2298     h264qpel
2299     hevcparse
2300     hpeldsp
2301     huffman
2302     huffyuvdsp
2303     huffyuvencdsp
2304     idctdsp
2305     iirfilter
2306     mdct15
2307     intrax8
2308     iso_media
2309     ividsp
2310     jpegtables
2311     lgplv3
2312     libx262
2313     llauddsp
2314     llviddsp
2315     llvidencdsp
2316     lpc
2317     lzf
2318     me_cmp
2319     mpeg_er
2320     mpegaudio
2321     mpegaudiodsp
2322     mpegaudioheader
2323     mpegvideo
2324     mpegvideoenc
2325     mss34dsp
2326     pixblockdsp
2327     qpeldsp
2328     qsv
2329     qsvdec
2330     qsvenc
2331     qsvvpp
2332     rangecoder
2333     riffdec
2334     riffenc
2335     rtpdec
2336     rtpenc_chain
2337     rv34dsp
2338     sinewin
2339     snappy
2340     srtp
2341     startcode
2342     texturedsp
2343     texturedspenc
2344     tpeldsp
2345     vaapi_1
2346     vaapi_encode
2347     vc1dsp
2348     videodsp
2349     vp3dsp
2350     vp56dsp
2351     vp8dsp
2352     wma_freqs
2353     wmv2dsp
2354 "
2355
2356 CMDLINE_SELECT="
2357     $ARCH_EXT_LIST
2358     $CONFIG_LIST
2359     $HAVE_LIST_CMDLINE
2360     $THREADS_LIST
2361     asm
2362     cross_compile
2363     debug
2364     extra_warnings
2365     logging
2366     lto
2367     optimizations
2368     rpath
2369     stripping
2370 "
2371
2372 PATHS_LIST="
2373     bindir
2374     datadir
2375     docdir
2376     incdir
2377     libdir
2378     mandir
2379     pkgconfigdir
2380     prefix
2381     shlibdir
2382     install_name_dir
2383 "
2384
2385 CMDLINE_SET="
2386     $PATHS_LIST
2387     ar
2388     arch
2389     as
2390     assert_level
2391     build_suffix
2392     cc
2393     objcc
2394     cpu
2395     cross_prefix
2396     custom_allocator
2397     cxx
2398     dep_cc
2399     doxygen
2400     env
2401     extra_version
2402     gas
2403     host_cc
2404     host_cflags
2405     host_extralibs
2406     host_ld
2407     host_ldflags
2408     host_os
2409     ignore_tests
2410     install
2411     ld
2412     ln_s
2413     logfile
2414     malloc_prefix
2415     nm
2416     optflags
2417     nvcc
2418     nvccflags
2419     pkg_config
2420     pkg_config_flags
2421     progs_suffix
2422     random_seed
2423     ranlib
2424     samples
2425     strip
2426     sws_max_filter_size
2427     sysinclude
2428     sysroot
2429     target_exec
2430     target_os
2431     target_path
2432     target_samples
2433     tempprefix
2434     toolchain
2435     valgrind
2436     x86asmexe
2437 "
2438
2439 CMDLINE_APPEND="
2440     extra_cflags
2441     extra_cxxflags
2442     extra_objcflags
2443     host_cppflags
2444 "
2445
2446 # code dependency declarations
2447
2448 # architecture extensions
2449
2450 armv5te_deps="arm"
2451 armv6_deps="arm"
2452 armv6t2_deps="arm"
2453 armv8_deps="aarch64"
2454 neon_deps_any="aarch64 arm"
2455 intrinsics_neon_deps="neon"
2456 vfp_deps_any="aarch64 arm"
2457 vfpv3_deps="vfp"
2458 setend_deps="arm"
2459
2460 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2461
2462 altivec_deps="ppc"
2463 dcbzl_deps="ppc"
2464 ldbrx_deps="ppc"
2465 ppc4xx_deps="ppc"
2466 vsx_deps="altivec"
2467 power8_deps="vsx"
2468
2469 loongson2_deps="mips"
2470 loongson3_deps="mips"
2471 mips32r2_deps="mips"
2472 mips32r5_deps="mips"
2473 mips32r6_deps="mips"
2474 mips64r2_deps="mips"
2475 mips64r6_deps="mips"
2476 mipsfpu_deps="mips"
2477 mipsdsp_deps="mips"
2478 mipsdspr2_deps="mips"
2479 mmi_deps="mips"
2480 msa_deps="mipsfpu"
2481
2482 cpunop_deps="i686"
2483 x86_64_select="i686"
2484 x86_64_suggest="fast_cmov"
2485
2486 amd3dnow_deps="mmx"
2487 amd3dnowext_deps="amd3dnow"
2488 i686_deps="x86"
2489 mmx_deps="x86"
2490 mmxext_deps="mmx"
2491 sse_deps="mmxext"
2492 sse2_deps="sse"
2493 sse3_deps="sse2"
2494 ssse3_deps="sse3"
2495 sse4_deps="ssse3"
2496 sse42_deps="sse4"
2497 aesni_deps="sse42"
2498 avx_deps="sse42"
2499 xop_deps="avx"
2500 fma3_deps="avx"
2501 fma4_deps="avx"
2502 avx2_deps="avx"
2503 avx512_deps="avx2"
2504
2505 mmx_external_deps="x86asm"
2506 mmx_inline_deps="inline_asm x86"
2507 mmx_suggest="mmx_external mmx_inline"
2508
2509 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2510     eval dep=\$${ext}_deps
2511     eval ${ext}_external_deps='"${dep}_external"'
2512     eval ${ext}_inline_deps='"${dep}_inline"'
2513     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2514 done
2515
2516 aligned_stack_if_any="aarch64 ppc x86"
2517 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2518 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2519 fast_unaligned_if_any="aarch64 ppc x86"
2520 simd_align_16_if_any="altivec neon sse"
2521 simd_align_32_if_any="avx"
2522 simd_align_64_if_any="avx512"
2523
2524 # system capabilities
2525 linux_perf_deps="linux_perf_event_h"
2526 symver_if_any="symver_asm_label symver_gnu_asm"
2527 valgrind_backtrace_conflict="optimizations"
2528 valgrind_backtrace_deps="valgrind_valgrind_h"
2529
2530 # threading support
2531 atomics_gcc_if="sync_val_compare_and_swap"
2532 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2533 atomics_win32_if="MemoryBarrier"
2534 atomics_native_if_any="$ATOMICS_LIST"
2535 w32threads_deps="atomics_native"
2536 threads_if_any="$THREADS_LIST"
2537
2538 # subsystems
2539 cbs_av1_select="cbs"
2540 cbs_h264_select="cbs golomb"
2541 cbs_h265_select="cbs golomb"
2542 cbs_jpeg_select="cbs"
2543 cbs_mpeg2_select="cbs"
2544 cbs_vp9_select="cbs"
2545 dct_select="rdft"
2546 dirac_parse_select="golomb"
2547 dnn_suggest="libtensorflow"
2548 error_resilience_select="me_cmp"
2549 faandct_deps="faan"
2550 faandct_select="fdctdsp"
2551 faanidct_deps="faan"
2552 faanidct_select="idctdsp"
2553 h264dsp_select="startcode"
2554 hevcparse_select="golomb"
2555 frame_thread_encoder_deps="encoders threads"
2556 intrax8_select="blockdsp idctdsp"
2557 mdct_select="fft"
2558 mdct15_select="fft"
2559 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2560 mpeg_er_select="error_resilience"
2561 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2562 mpegaudiodsp_select="dct"
2563 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2564 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2565 vc1dsp_select="h264chroma qpeldsp startcode"
2566 rdft_select="fft"
2567
2568 # decoders / encoders
2569 aac_decoder_select="adts_header mdct15 mdct sinewin"
2570 aac_fixed_decoder_select="adts_header mdct sinewin"
2571 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2572 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2573 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2574 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2575 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2576 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2577 adpcm_g722_decoder_select="g722dsp"
2578 adpcm_g722_encoder_select="g722dsp"
2579 aic_decoder_select="golomb idctdsp"
2580 alac_encoder_select="lpc"
2581 als_decoder_select="bswapdsp"
2582 amrnb_decoder_select="lsp"
2583 amrwb_decoder_select="lsp"
2584 amv_decoder_select="sp5x_decoder exif"
2585 amv_encoder_select="jpegtables mpegvideoenc"
2586 ape_decoder_select="bswapdsp llauddsp"
2587 apng_decoder_deps="zlib"
2588 apng_encoder_deps="zlib"
2589 apng_encoder_select="llvidencdsp"
2590 aptx_decoder_select="audio_frame_queue"
2591 aptx_encoder_select="audio_frame_queue"
2592 aptx_hd_decoder_select="audio_frame_queue"
2593 aptx_hd_encoder_select="audio_frame_queue"
2594 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2595 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2596 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2597 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2598 atrac1_decoder_select="mdct sinewin"
2599 atrac3_decoder_select="mdct"
2600 atrac3p_decoder_select="mdct sinewin"
2601 atrac9_decoder_select="mdct"
2602 avrn_decoder_select="exif jpegtables"
2603 bink_decoder_select="blockdsp hpeldsp"
2604 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2605 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2606 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2607 clearvideo_decoder_select="idctdsp"
2608 cllc_decoder_select="bswapdsp"
2609 comfortnoise_encoder_select="lpc"
2610 cook_decoder_select="audiodsp mdct sinewin"
2611 cscd_decoder_select="lzo"
2612 cscd_decoder_suggest="zlib"
2613 dca_decoder_select="mdct"
2614 dds_decoder_select="texturedsp"
2615 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2616 dnxhd_decoder_select="blockdsp idctdsp"
2617 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2618 dolby_e_decoder_select="mdct"
2619 dvvideo_decoder_select="dvprofile idctdsp"
2620 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2621 dxa_decoder_deps="zlib"
2622 dxv_decoder_select="lzf texturedsp"
2623 eac3_decoder_select="ac3_decoder"
2624 eac3_encoder_select="ac3_encoder"
2625 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2626 eatgq_decoder_select="aandcttables"
2627 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2628 exr_decoder_deps="zlib"
2629 ffv1_decoder_select="rangecoder"
2630 ffv1_encoder_select="rangecoder"
2631 ffvhuff_decoder_select="huffyuv_decoder"
2632 ffvhuff_encoder_select="huffyuv_encoder"
2633 fic_decoder_select="golomb"
2634 flac_decoder_select="flacdsp"
2635 flac_encoder_select="bswapdsp flacdsp lpc"
2636 flashsv2_decoder_deps="zlib"
2637 flashsv2_encoder_deps="zlib"
2638 flashsv_decoder_deps="zlib"
2639 flashsv_encoder_deps="zlib"
2640 flv_decoder_select="h263_decoder"
2641 flv_encoder_select="h263_encoder"
2642 fourxm_decoder_select="blockdsp bswapdsp"
2643 fraps_decoder_select="bswapdsp huffman"
2644 g2m_decoder_deps="zlib"
2645 g2m_decoder_select="blockdsp idctdsp jpegtables"
2646 g729_decoder_select="audiodsp"
2647 h261_decoder_select="mpegvideo"
2648 h261_encoder_select="mpegvideoenc"
2649 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2650 h263_encoder_select="h263dsp mpegvideoenc"
2651 h263i_decoder_select="h263_decoder"
2652 h263p_decoder_select="h263_decoder"
2653 h263p_encoder_select="h263_encoder"
2654 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2655 h264_decoder_suggest="error_resilience"
2656 hap_decoder_select="snappy texturedsp"
2657 hap_encoder_deps="libsnappy"
2658 hap_encoder_select="texturedspenc"
2659 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2660 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2661 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2662 iac_decoder_select="imc_decoder"
2663 imc_decoder_select="bswapdsp fft mdct sinewin"
2664 indeo3_decoder_select="hpeldsp"
2665 indeo4_decoder_select="ividsp"
2666 indeo5_decoder_select="ividsp"
2667 interplay_video_decoder_select="hpeldsp"
2668 jpegls_decoder_select="mjpeg_decoder"
2669 jv_decoder_select="blockdsp"
2670 lagarith_decoder_select="llviddsp"
2671 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2672 magicyuv_decoder_select="llviddsp"
2673 magicyuv_encoder_select="llvidencdsp"
2674 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2675 metasound_decoder_select="lsp mdct sinewin"
2676 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2677 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2678 mjpeg_encoder_select="jpegtables mpegvideoenc"
2679 mjpegb_decoder_select="mjpeg_decoder"
2680 mlp_decoder_select="mlp_parser"
2681 mlp_encoder_select="lpc"
2682 motionpixels_decoder_select="bswapdsp"
2683 mp1_decoder_select="mpegaudio"
2684 mp1float_decoder_select="mpegaudio"
2685 mp2_decoder_select="mpegaudio"
2686 mp2float_decoder_select="mpegaudio"
2687 mp3_decoder_select="mpegaudio"
2688 mp3adu_decoder_select="mpegaudio"
2689 mp3adufloat_decoder_select="mpegaudio"
2690 mp3float_decoder_select="mpegaudio"
2691 mp3on4_decoder_select="mpegaudio"
2692 mp3on4float_decoder_select="mpegaudio"
2693 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2694 mpc8_decoder_select="mpegaudiodsp"
2695 mpegvideo_decoder_select="mpegvideo"
2696 mpeg1video_decoder_select="mpegvideo"
2697 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2698 mpeg2video_decoder_select="mpegvideo"
2699 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2700 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2701 mpeg4_encoder_select="h263_encoder"
2702 msa1_decoder_select="mss34dsp"
2703 mscc_decoder_deps="zlib"
2704 msmpeg4v1_decoder_select="h263_decoder"
2705 msmpeg4v2_decoder_select="h263_decoder"
2706 msmpeg4v2_encoder_select="h263_encoder"
2707 msmpeg4v3_decoder_select="h263_decoder"
2708 msmpeg4v3_encoder_select="h263_encoder"
2709 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2710 mts2_decoder_select="mss34dsp"
2711 mwsc_decoder_deps="zlib"
2712 mxpeg_decoder_select="mjpeg_decoder"
2713 nellymoser_decoder_select="mdct sinewin"
2714 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2715 nuv_decoder_select="idctdsp lzo"
2716 on2avc_decoder_select="mdct"
2717 opus_decoder_deps="swresample"
2718 opus_decoder_select="mdct15"
2719 opus_encoder_select="audio_frame_queue mdct15"
2720 png_decoder_deps="zlib"
2721 png_encoder_deps="zlib"
2722 png_encoder_select="llvidencdsp"
2723 prores_decoder_select="blockdsp idctdsp"
2724 prores_encoder_select="fdctdsp"
2725 qcelp_decoder_select="lsp"
2726 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2727 ra_144_decoder_select="audiodsp"
2728 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2729 ralf_decoder_select="golomb"
2730 rasc_decoder_deps="zlib"
2731 rawvideo_decoder_select="bswapdsp"
2732 rscc_decoder_deps="zlib"
2733 rtjpeg_decoder_select="me_cmp"
2734 rv10_decoder_select="h263_decoder"
2735 rv10_encoder_select="h263_encoder"
2736 rv20_decoder_select="h263_decoder"
2737 rv20_encoder_select="h263_encoder"
2738 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2739 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2740 screenpresso_decoder_deps="zlib"
2741 shorten_decoder_select="bswapdsp"
2742 sipr_decoder_select="lsp"
2743 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2744 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2745 sonic_decoder_select="golomb rangecoder"
2746 sonic_encoder_select="golomb rangecoder"
2747 sonic_ls_encoder_select="golomb rangecoder"
2748 sp5x_decoder_select="mjpeg_decoder"
2749 speedhq_decoder_select="mpegvideo"
2750 srgc_decoder_deps="zlib"
2751 svq1_decoder_select="hpeldsp"
2752 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2753 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2754 svq3_decoder_suggest="zlib"
2755 tak_decoder_select="audiodsp"
2756 tdsc_decoder_deps="zlib"
2757 tdsc_decoder_select="mjpeg_decoder"
2758 theora_decoder_select="vp3_decoder"
2759 thp_decoder_select="mjpeg_decoder"
2760 tiff_decoder_suggest="zlib lzma"
2761 tiff_encoder_suggest="zlib"
2762 truehd_decoder_select="mlp_parser"
2763 truehd_encoder_select="lpc"
2764 truemotion2_decoder_select="bswapdsp"
2765 truespeech_decoder_select="bswapdsp"
2766 tscc_decoder_deps="zlib"
2767 twinvq_decoder_select="mdct lsp sinewin"
2768 txd_decoder_select="texturedsp"
2769 utvideo_decoder_select="bswapdsp llviddsp"
2770 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2771 vble_decoder_select="llviddsp"
2772 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2773 vc1image_decoder_select="vc1_decoder"
2774 vorbis_decoder_select="mdct"
2775 vorbis_encoder_select="audio_frame_queue mdct"
2776 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2777 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2778 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2779 vp6a_decoder_select="vp6_decoder"
2780 vp6f_decoder_select="vp6_decoder"
2781 vp7_decoder_select="h264pred videodsp vp8dsp"
2782 vp8_decoder_select="h264pred videodsp vp8dsp"
2783 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2784 wcmv_decoder_deps="zlib"
2785 webp_decoder_select="vp8_decoder exif"
2786 wmalossless_decoder_select="llauddsp"
2787 wmapro_decoder_select="mdct sinewin wma_freqs"
2788 wmav1_decoder_select="mdct sinewin wma_freqs"
2789 wmav1_encoder_select="mdct sinewin wma_freqs"
2790 wmav2_decoder_select="mdct sinewin wma_freqs"
2791 wmav2_encoder_select="mdct sinewin wma_freqs"
2792 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2793 wmv1_decoder_select="h263_decoder"
2794 wmv1_encoder_select="h263_encoder"
2795 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2796 wmv2_encoder_select="h263_encoder wmv2dsp"
2797 wmv3_decoder_select="vc1_decoder"
2798 wmv3image_decoder_select="wmv3_decoder"
2799 xma1_decoder_select="wmapro_decoder"
2800 xma2_decoder_select="wmapro_decoder"
2801 zerocodec_decoder_deps="zlib"
2802 zlib_decoder_deps="zlib"
2803 zlib_encoder_deps="zlib"
2804 zmbv_decoder_deps="zlib"
2805 zmbv_encoder_deps="zlib"
2806
2807 # hardware accelerators
2808 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2809 cuda_deps="ffnvcodec"
2810 cuvid_deps="ffnvcodec"
2811 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2812 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2813 ffnvcodec_deps_any="libdl LoadLibrary"
2814 nvdec_deps="ffnvcodec"
2815 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2816 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2817 xvmc_deps="X11_extensions_XvMClib_h"
2818
2819 h263_vaapi_hwaccel_deps="vaapi"
2820 h263_vaapi_hwaccel_select="h263_decoder"
2821 h263_videotoolbox_hwaccel_deps="videotoolbox"
2822 h263_videotoolbox_hwaccel_select="h263_decoder"
2823 h264_d3d11va_hwaccel_deps="d3d11va"
2824 h264_d3d11va_hwaccel_select="h264_decoder"
2825 h264_d3d11va2_hwaccel_deps="d3d11va"
2826 h264_d3d11va2_hwaccel_select="h264_decoder"
2827 h264_dxva2_hwaccel_deps="dxva2"
2828 h264_dxva2_hwaccel_select="h264_decoder"
2829 h264_nvdec_hwaccel_deps="nvdec"
2830 h264_nvdec_hwaccel_select="h264_decoder"
2831 h264_vaapi_hwaccel_deps="vaapi"
2832 h264_vaapi_hwaccel_select="h264_decoder"
2833 h264_vdpau_hwaccel_deps="vdpau"
2834 h264_vdpau_hwaccel_select="h264_decoder"
2835 h264_videotoolbox_hwaccel_deps="videotoolbox"
2836 h264_videotoolbox_hwaccel_select="h264_decoder"
2837 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2838 hevc_d3d11va_hwaccel_select="hevc_decoder"
2839 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2840 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2841 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2842 hevc_dxva2_hwaccel_select="hevc_decoder"
2843 hevc_nvdec_hwaccel_deps="nvdec"
2844 hevc_nvdec_hwaccel_select="hevc_decoder"
2845 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2846 hevc_vaapi_hwaccel_select="hevc_decoder"
2847 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2848 hevc_vdpau_hwaccel_select="hevc_decoder"
2849 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2850 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2851 mjpeg_nvdec_hwaccel_deps="nvdec"
2852 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2853 mjpeg_vaapi_hwaccel_deps="vaapi"
2854 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2855 mpeg_xvmc_hwaccel_deps="xvmc"
2856 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2857 mpeg1_nvdec_hwaccel_deps="nvdec"
2858 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2859 mpeg1_vdpau_hwaccel_deps="vdpau"
2860 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2861 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2862 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2863 mpeg1_xvmc_hwaccel_deps="xvmc"
2864 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2865 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2866 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2867 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2868 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2869 mpeg2_dxva2_hwaccel_deps="dxva2"
2870 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2871 mpeg2_nvdec_hwaccel_deps="nvdec"
2872 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2873 mpeg2_vaapi_hwaccel_deps="vaapi"
2874 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2875 mpeg2_vdpau_hwaccel_deps="vdpau"
2876 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2877 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2878 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2879 mpeg2_xvmc_hwaccel_deps="xvmc"
2880 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2881 mpeg4_nvdec_hwaccel_deps="nvdec"
2882 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2883 mpeg4_vaapi_hwaccel_deps="vaapi"
2884 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2885 mpeg4_vdpau_hwaccel_deps="vdpau"
2886 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2887 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2888 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2889 vc1_d3d11va_hwaccel_deps="d3d11va"
2890 vc1_d3d11va_hwaccel_select="vc1_decoder"
2891 vc1_d3d11va2_hwaccel_deps="d3d11va"
2892 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2893 vc1_dxva2_hwaccel_deps="dxva2"
2894 vc1_dxva2_hwaccel_select="vc1_decoder"
2895 vc1_nvdec_hwaccel_deps="nvdec"
2896 vc1_nvdec_hwaccel_select="vc1_decoder"
2897 vc1_vaapi_hwaccel_deps="vaapi"
2898 vc1_vaapi_hwaccel_select="vc1_decoder"
2899 vc1_vdpau_hwaccel_deps="vdpau"
2900 vc1_vdpau_hwaccel_select="vc1_decoder"
2901 vp8_nvdec_hwaccel_deps="nvdec"
2902 vp8_nvdec_hwaccel_select="vp8_decoder"
2903 vp8_vaapi_hwaccel_deps="vaapi"
2904 vp8_vaapi_hwaccel_select="vp8_decoder"
2905 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2906 vp9_d3d11va_hwaccel_select="vp9_decoder"
2907 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2908 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2909 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2910 vp9_dxva2_hwaccel_select="vp9_decoder"
2911 vp9_nvdec_hwaccel_deps="nvdec"
2912 vp9_nvdec_hwaccel_select="vp9_decoder"
2913 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2914 vp9_vaapi_hwaccel_select="vp9_decoder"
2915 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2916 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2917 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2918 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2919 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2920 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2921
2922 # hardware-accelerated codecs
2923 omx_deps="libdl pthreads"
2924 omx_rpi_select="omx"
2925 qsv_deps="libmfx"
2926 qsvdec_select="qsv"
2927 qsvenc_select="qsv"
2928 qsvvpp_select="qsv"
2929 vaapi_encode_deps="vaapi"
2930 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2931
2932 hwupload_cuda_filter_deps="ffnvcodec"
2933 scale_npp_filter_deps="ffnvcodec libnpp"
2934 scale_cuda_filter_deps="cuda_sdk"
2935 thumbnail_cuda_filter_deps="cuda_sdk"
2936 transpose_npp_filter_deps="ffnvcodec libnpp"
2937
2938 amf_deps_any="libdl LoadLibrary"
2939 nvenc_deps="ffnvcodec"
2940 nvenc_deps_any="libdl LoadLibrary"
2941 nvenc_encoder_deps="nvenc"
2942
2943 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2944 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2945 h264_amf_encoder_deps="amf"
2946 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2947 h264_cuvid_decoder_deps="cuvid"
2948 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2949 h264_mediacodec_decoder_deps="mediacodec"
2950 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2951 h264_mmal_decoder_deps="mmal"
2952 h264_nvenc_encoder_deps="nvenc"
2953 h264_omx_encoder_deps="omx"
2954 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2955 h264_qsv_encoder_select="qsvenc"
2956 h264_rkmpp_decoder_deps="rkmpp"
2957 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2958 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2959 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2960 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2961 hevc_amf_encoder_deps="amf"
2962 hevc_cuvid_decoder_deps="cuvid"
2963 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2964 hevc_mediacodec_decoder_deps="mediacodec"
2965 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2966 hevc_nvenc_encoder_deps="nvenc"
2967 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2968 hevc_qsv_encoder_select="hevcparse qsvenc"
2969 hevc_rkmpp_decoder_deps="rkmpp"
2970 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2971 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2972 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2973 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2974 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2975 mjpeg_cuvid_decoder_deps="cuvid"
2976 mjpeg_qsv_encoder_deps="libmfx"
2977 mjpeg_qsv_encoder_select="qsvenc"
2978 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2979 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
2980 mpeg1_cuvid_decoder_deps="cuvid"
2981 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2982 mpeg2_crystalhd_decoder_select="crystalhd"
2983 mpeg2_cuvid_decoder_deps="cuvid"
2984 mpeg2_mmal_decoder_deps="mmal"
2985 mpeg2_mediacodec_decoder_deps="mediacodec"
2986 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2987 mpeg2_qsv_encoder_select="qsvenc"
2988 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2989 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2990 mpeg4_crystalhd_decoder_select="crystalhd"
2991 mpeg4_cuvid_decoder_deps="cuvid"
2992 mpeg4_mediacodec_decoder_deps="mediacodec"
2993 mpeg4_mmal_decoder_deps="mmal"
2994 mpeg4_omx_encoder_deps="omx"
2995 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2996 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2997 msmpeg4_crystalhd_decoder_select="crystalhd"
2998 nvenc_h264_encoder_select="h264_nvenc_encoder"
2999 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3000 vc1_crystalhd_decoder_select="crystalhd"
3001 vc1_cuvid_decoder_deps="cuvid"
3002 vc1_mmal_decoder_deps="mmal"
3003 vc1_qsv_decoder_select="qsvdec vc1_parser"
3004 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3005 vp8_cuvid_decoder_deps="cuvid"
3006 vp8_mediacodec_decoder_deps="mediacodec"
3007 vp8_qsv_decoder_select="qsvdec vp8_parser"
3008 vp8_rkmpp_decoder_deps="rkmpp"
3009 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3010 vp8_vaapi_encoder_select="vaapi_encode"
3011 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3012 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3013 vp9_cuvid_decoder_deps="cuvid"
3014 vp9_mediacodec_decoder_deps="mediacodec"
3015 vp9_rkmpp_decoder_deps="rkmpp"
3016 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3017 vp9_vaapi_encoder_select="vaapi_encode"
3018 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3019 wmv3_crystalhd_decoder_select="crystalhd"
3020
3021 # parsers
3022 aac_parser_select="adts_header"
3023 av1_parser_select="cbs_av1"
3024 h264_parser_select="golomb h264dsp h264parse"
3025 hevc_parser_select="hevcparse"
3026 mpegaudio_parser_select="mpegaudioheader"
3027 mpegvideo_parser_select="mpegvideo"
3028 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3029 vc1_parser_select="vc1dsp"
3030
3031 # bitstream_filters
3032 aac_adtstoasc_bsf_select="adts_header"
3033 av1_metadata_bsf_select="cbs_av1"
3034 eac3_core_bsf_select="ac3_parser"
3035 filter_units_bsf_select="cbs"
3036 h264_metadata_bsf_deps="const_nan"
3037 h264_metadata_bsf_select="cbs_h264"
3038 h264_redundant_pps_bsf_select="cbs_h264"
3039 hevc_metadata_bsf_select="cbs_h265"
3040 mjpeg2jpeg_bsf_select="jpegtables"
3041 mpeg2_metadata_bsf_select="cbs_mpeg2"
3042 trace_headers_bsf_select="cbs"
3043 vp9_metadata_bsf_select="cbs_vp9"
3044
3045 # external libraries
3046 aac_at_decoder_deps="audiotoolbox"
3047 aac_at_decoder_select="aac_adtstoasc_bsf"
3048 ac3_at_decoder_deps="audiotoolbox"
3049 ac3_at_decoder_select="ac3_parser"
3050 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3051 alac_at_decoder_deps="audiotoolbox"
3052 amr_nb_at_decoder_deps="audiotoolbox"
3053 avisynth_deps_any="libdl LoadLibrary"
3054 avisynth_demuxer_deps="avisynth"
3055 avisynth_demuxer_select="riffdec"
3056 eac3_at_decoder_deps="audiotoolbox"
3057 eac3_at_decoder_select="ac3_parser"
3058 gsm_ms_at_decoder_deps="audiotoolbox"
3059 ilbc_at_decoder_deps="audiotoolbox"
3060 mp1_at_decoder_deps="audiotoolbox"
3061 mp2_at_decoder_deps="audiotoolbox"
3062 mp3_at_decoder_deps="audiotoolbox"
3063 mp1_at_decoder_select="mpegaudioheader"
3064 mp2_at_decoder_select="mpegaudioheader"
3065 mp3_at_decoder_select="mpegaudioheader"
3066 pcm_alaw_at_decoder_deps="audiotoolbox"
3067 pcm_mulaw_at_decoder_deps="audiotoolbox"
3068 qdmc_at_decoder_deps="audiotoolbox"
3069 qdm2_at_decoder_deps="audiotoolbox"
3070 aac_at_encoder_deps="audiotoolbox"
3071 aac_at_encoder_select="audio_frame_queue"
3072 alac_at_encoder_deps="audiotoolbox"
3073 alac_at_encoder_select="audio_frame_queue"
3074 ilbc_at_encoder_deps="audiotoolbox"
3075 ilbc_at_encoder_select="audio_frame_queue"
3076 pcm_alaw_at_encoder_deps="audiotoolbox"
3077 pcm_alaw_at_encoder_select="audio_frame_queue"
3078 pcm_mulaw_at_encoder_deps="audiotoolbox"
3079 pcm_mulaw_at_encoder_select="audio_frame_queue"
3080 chromaprint_muxer_deps="chromaprint"
3081 h264_videotoolbox_encoder_deps="pthreads"
3082 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3083 hevc_videotoolbox_encoder_deps="pthreads"
3084 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3085 libaom_av1_decoder_deps="libaom"
3086 libaom_av1_encoder_deps="libaom"
3087 libaom_av1_encoder_select="extract_extradata_bsf"
3088 libcelt_decoder_deps="libcelt"
3089 libcodec2_decoder_deps="libcodec2"
3090 libcodec2_encoder_deps="libcodec2"
3091 libdavs2_decoder_deps="libdavs2"
3092 libfdk_aac_decoder_deps="libfdk_aac"
3093 libfdk_aac_encoder_deps="libfdk_aac"
3094 libfdk_aac_encoder_select="audio_frame_queue"
3095 libgme_demuxer_deps="libgme"
3096 libgsm_decoder_deps="libgsm"
3097 libgsm_encoder_deps="libgsm"
3098 libgsm_ms_decoder_deps="libgsm"
3099 libgsm_ms_encoder_deps="libgsm"
3100 libilbc_decoder_deps="libilbc"
3101 libilbc_encoder_deps="libilbc"
3102 libkvazaar_encoder_deps="libkvazaar"
3103 libmodplug_demuxer_deps="libmodplug"
3104 libmp3lame_encoder_deps="libmp3lame"
3105 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3106 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3107 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3108 libopencore_amrnb_encoder_select="audio_frame_queue"
3109 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3110 libopenh264_decoder_deps="libopenh264"
3111 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3112 libopenh264_encoder_deps="libopenh264"
3113 libopenjpeg_decoder_deps="libopenjpeg"
3114 libopenjpeg_encoder_deps="libopenjpeg"
3115 libopenmpt_demuxer_deps="libopenmpt"
3116 libopus_decoder_deps="libopus"
3117 libopus_encoder_deps="libopus"
3118 libopus_encoder_select="audio_frame_queue"
3119 librsvg_decoder_deps="librsvg"
3120 libshine_encoder_deps="libshine"
3121 libshine_encoder_select="audio_frame_queue"
3122 libspeex_decoder_deps="libspeex"
3123 libspeex_encoder_deps="libspeex"
3124 libspeex_encoder_select="audio_frame_queue"
3125 libtheora_encoder_deps="libtheora"
3126 libtwolame_encoder_deps="libtwolame"
3127 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3128 libvorbis_decoder_deps="libvorbis"
3129 libvorbis_encoder_deps="libvorbis libvorbisenc"
3130 libvorbis_encoder_select="audio_frame_queue"
3131 libvpx_vp8_decoder_deps="libvpx"
3132 libvpx_vp8_encoder_deps="libvpx"
3133 libvpx_vp9_decoder_deps="libvpx"
3134 libvpx_vp9_encoder_deps="libvpx"
3135 libwavpack_encoder_deps="libwavpack"
3136 libwavpack_encoder_select="audio_frame_queue"
3137 libwebp_encoder_deps="libwebp"
3138 libwebp_anim_encoder_deps="libwebp"
3139 libx262_encoder_deps="libx262"
3140 libx264_encoder_deps="libx264"
3141 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3142 libx264rgb_encoder_select="libx264_encoder"
3143 libx265_encoder_deps="libx265"
3144 libxavs_encoder_deps="libxavs"
3145 libxavs2_encoder_deps="libxavs2"
3146 libxvid_encoder_deps="libxvid"
3147 libzvbi_teletext_decoder_deps="libzvbi"
3148 vapoursynth_demuxer_deps="vapoursynth"
3149 videotoolbox_suggest="coreservices"
3150 videotoolbox_deps="corefoundation coremedia corevideo"
3151 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3152
3153 # demuxers / muxers
3154 ac3_demuxer_select="ac3_parser"
3155 aiff_muxer_select="iso_media"
3156 asf_demuxer_select="riffdec"
3157 asf_o_demuxer_select="riffdec"
3158 asf_muxer_select="riffenc"
3159 asf_stream_muxer_select="asf_muxer"
3160 avi_demuxer_select="iso_media riffdec exif"
3161 avi_muxer_select="riffenc"
3162 caf_demuxer_select="iso_media riffdec"
3163 caf_muxer_select="iso_media"
3164 dash_muxer_select="mp4_muxer"
3165 dash_demuxer_deps="libxml2"
3166 dirac_demuxer_select="dirac_parser"
3167 dts_demuxer_select="dca_parser"
3168 dtshd_demuxer_select="dca_parser"
3169 dv_demuxer_select="dvprofile"
3170 dv_muxer_select="dvprofile"
3171 dxa_demuxer_select="riffdec"
3172 eac3_demuxer_select="ac3_parser"
3173 f4v_muxer_select="mov_muxer"
3174 fifo_muxer_deps="threads"
3175 flac_demuxer_select="flac_parser"
3176 hds_muxer_select="flv_muxer"
3177 hls_muxer_select="mpegts_muxer"
3178 hls_muxer_suggest="gcrypt openssl"
3179 image2_alias_pix_demuxer_select="image2_demuxer"
3180 image2_brender_pix_demuxer_select="image2_demuxer"
3181 ipod_muxer_select="mov_muxer"
3182 ismv_muxer_select="mov_muxer"
3183 matroska_audio_muxer_select="matroska_muxer"
3184 matroska_demuxer_select="iso_media riffdec"
3185 matroska_demuxer_suggest="bzlib lzo zlib"
3186 matroska_muxer_select="iso_media riffenc"
3187 mmf_muxer_select="riffenc"
3188 mov_demuxer_select="iso_media riffdec"
3189 mov_demuxer_suggest="zlib"
3190 mov_muxer_select="iso_media riffenc rtpenc_chain"
3191 mp3_demuxer_select="mpegaudio_parser"
3192 mp3_muxer_select="mpegaudioheader"
3193 mp4_muxer_select="mov_muxer"
3194 mpegts_demuxer_select="iso_media"
3195 mpegts_muxer_select="adts_muxer latm_muxer"
3196 mpegtsraw_demuxer_select="mpegts_demuxer"
3197 mxf_d10_muxer_select="mxf_muxer"
3198 mxf_opatom_muxer_select="mxf_muxer"
3199 nut_muxer_select="riffenc"
3200 nuv_demuxer_select="riffdec"
3201 oga_muxer_select="ogg_muxer"
3202 ogg_demuxer_select="dirac_parse"
3203 ogv_muxer_select="ogg_muxer"
3204 opus_muxer_select="ogg_muxer"
3205 psp_muxer_select="mov_muxer"
3206 rtp_demuxer_select="sdp_demuxer"
3207 rtp_muxer_select="golomb"
3208 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3209 rtsp_demuxer_select="http_protocol rtpdec"
3210 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3211 sap_demuxer_select="sdp_demuxer"
3212 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3213 sdp_demuxer_select="rtpdec"
3214 smoothstreaming_muxer_select="ismv_muxer"
3215 spdif_demuxer_select="adts_header"
3216 spdif_muxer_select="adts_header"
3217 spx_muxer_select="ogg_muxer"
3218 swf_demuxer_suggest="zlib"
3219 tak_demuxer_select="tak_parser"
3220 tg2_muxer_select="mov_muxer"
3221 tgp_muxer_select="mov_muxer"
3222 vobsub_demuxer_select="mpegps_demuxer"
3223 w64_demuxer_select="wav_demuxer"
3224 w64_muxer_select="wav_muxer"
3225 wav_demuxer_select="riffdec"
3226 wav_muxer_select="riffenc"
3227 webm_muxer_select="iso_media riffenc"
3228 webm_dash_manifest_demuxer_select="matroska_demuxer"
3229 wtv_demuxer_select="mpegts_demuxer riffdec"
3230 wtv_muxer_select="mpegts_muxer riffenc"
3231 xmv_demuxer_select="riffdec"
3232 xwma_demuxer_select="riffdec"
3233
3234 # indevs / outdevs
3235 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3236 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3237 alsa_indev_deps="alsa"
3238 alsa_outdev_deps="alsa"
3239 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3240 avfoundation_indev_suggest="coregraphics applicationservices"
3241 avfoundation_indev_extralibs="-framework Foundation"
3242 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3243 caca_outdev_deps="libcaca"
3244 decklink_deps_any="libdl LoadLibrary"
3245 decklink_indev_deps="decklink threads"
3246 decklink_indev_extralibs="-lstdc++"
3247 decklink_outdev_deps="decklink threads"
3248 decklink_outdev_suggest="libklvanc"
3249 decklink_outdev_extralibs="-lstdc++"
3250 libndi_newtek_indev_deps="libndi_newtek"
3251 libndi_newtek_indev_extralibs="-lndi"
3252 libndi_newtek_outdev_deps="libndi_newtek"
3253 libndi_newtek_outdev_extralibs="-lndi"
3254 dshow_indev_deps="IBaseFilter"
3255 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3256 fbdev_indev_deps="linux_fb_h"
3257 fbdev_outdev_deps="linux_fb_h"
3258 gdigrab_indev_deps="CreateDIBSection"
3259 gdigrab_indev_extralibs="-lgdi32"
3260 gdigrab_indev_select="bmp_decoder"
3261 iec61883_indev_deps="libiec61883"
3262 jack_indev_deps="libjack"
3263 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3264 kmsgrab_indev_deps="libdrm"
3265 lavfi_indev_deps="avfilter"
3266 libcdio_indev_deps="libcdio"
3267 libdc1394_indev_deps="libdc1394"
3268 openal_indev_deps="openal"
3269 opengl_outdev_deps="opengl"
3270 opengl_outdev_suggest="sdl2"
3271 oss_indev_deps_any="sys_soundcard_h"
3272 oss_outdev_deps_any="sys_soundcard_h"
3273 pulse_indev_deps="libpulse"
3274 pulse_outdev_deps="libpulse"
3275 sdl2_outdev_deps="sdl2"
3276 sndio_indev_deps="sndio"
3277 sndio_outdev_deps="sndio"
3278 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3279 v4l2_indev_suggest="libv4l2"
3280 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3281 v4l2_outdev_suggest="libv4l2"
3282 vfwcap_indev_deps="vfw32 vfwcap_defines"
3283 xcbgrab_indev_deps="libxcb"
3284 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3285 xv_outdev_deps="xlib"
3286
3287 # protocols
3288 async_protocol_deps="threads"
3289 bluray_protocol_deps="libbluray"
3290 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3291 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3292 ffrtmpcrypt_protocol_select="tcp_protocol"
3293 ffrtmphttp_protocol_conflict="librtmp_protocol"
3294 ffrtmphttp_protocol_select="http_protocol"
3295 ftp_protocol_select="tcp_protocol"
3296 gopher_protocol_select="network"
3297 http_protocol_select="tcp_protocol"
3298 http_protocol_suggest="zlib"
3299 httpproxy_protocol_select="tcp_protocol"
3300 httpproxy_protocol_suggest="zlib"
3301 https_protocol_select="tls_protocol"
3302 https_protocol_suggest="zlib"
3303 icecast_protocol_select="http_protocol"
3304 mmsh_protocol_select="http_protocol"
3305 mmst_protocol_select="network"
3306 rtmp_protocol_conflict="librtmp_protocol"
3307 rtmp_protocol_select="tcp_protocol"
3308 rtmp_protocol_suggest="zlib"
3309 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3310 rtmpe_protocol_suggest="zlib"
3311 rtmps_protocol_conflict="librtmp_protocol"
3312 rtmps_protocol_select="tls_protocol"
3313 rtmps_protocol_suggest="zlib"
3314 rtmpt_protocol_select="ffrtmphttp_protocol"
3315 rtmpt_protocol_suggest="zlib"
3316 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3317 rtmpte_protocol_suggest="zlib"
3318 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3319 rtmpts_protocol_suggest="zlib"
3320 rtp_protocol_select="udp_protocol"
3321 schannel_conflict="openssl gnutls libtls mbedtls"
3322 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3323 sctp_protocol_select="network"
3324 securetransport_conflict="openssl gnutls libtls mbedtls"
3325 srtp_protocol_select="rtp_protocol srtp"
3326 tcp_protocol_select="network"
3327 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3328 tls_protocol_select="tcp_protocol"
3329 udp_protocol_select="network"
3330 udplite_protocol_select="network"
3331 unix_protocol_deps="sys_un_h"
3332 unix_protocol_select="network"
3333
3334 # external library protocols
3335 librtmp_protocol_deps="librtmp"
3336 librtmpe_protocol_deps="librtmp"
3337 librtmps_protocol_deps="librtmp"
3338 librtmpt_protocol_deps="librtmp"
3339 librtmpte_protocol_deps="librtmp"
3340 libsmbclient_protocol_deps="libsmbclient gplv3"
3341 libsrt_protocol_deps="libsrt"
3342 libsrt_protocol_select="network"
3343 libssh_protocol_deps="libssh"
3344 libtls_conflict="openssl gnutls mbedtls"
3345
3346 # filters
3347 afftdn_filter_deps="avcodec"
3348 afftdn_filter_select="fft"
3349 afftfilt_filter_deps="avcodec"
3350 afftfilt_filter_select="fft"
3351 afir_filter_deps="avcodec"
3352 afir_filter_select="fft"
3353 amovie_filter_deps="avcodec avformat"
3354 aresample_filter_deps="swresample"
3355 ass_filter_deps="libass"
3356 atempo_filter_deps="avcodec"
3357 atempo_filter_select="rdft"
3358 avgblur_opencl_filter_deps="opencl"
3359 azmq_filter_deps="libzmq"
3360 blackframe_filter_deps="gpl"
3361 bm3d_filter_deps="avcodec"
3362 bm3d_filter_select="dct"
3363 boxblur_filter_deps="gpl"
3364 boxblur_opencl_filter_deps="opencl gpl"
3365 bs2b_filter_deps="libbs2b"
3366 colormatrix_filter_deps="gpl"
3367 convolution_opencl_filter_deps="opencl"
3368 convolve_filter_deps="avcodec"
3369 convolve_filter_select="fft"
3370 coreimage_filter_deps="coreimage appkit"
3371 coreimage_filter_extralibs="-framework OpenGL"
3372 coreimagesrc_filter_deps="coreimage appkit"
3373 coreimagesrc_filter_extralibs="-framework OpenGL"
3374 cover_rect_filter_deps="avcodec avformat gpl"
3375 cropdetect_filter_deps="gpl"
3376 deconvolve_filter_deps="avcodec"
3377 deconvolve_filter_select="fft"
3378 deinterlace_qsv_filter_deps="libmfx"
3379 deinterlace_vaapi_filter_deps="vaapi"
3380 delogo_filter_deps="gpl"
3381 denoise_vaapi_filter_deps="vaapi"
3382 deshake_filter_select="pixelutils"
3383 dilation_opencl_filter_deps="opencl"
3384 drawtext_filter_deps="libfreetype"
3385 drawtext_filter_suggest="libfontconfig libfribidi"
3386 elbg_filter_deps="avcodec"
3387 eq_filter_deps="gpl"
3388 erosion_opencl_filter_deps="opencl"
3389 fftfilt_filter_deps="avcodec"
3390 fftfilt_filter_select="rdft"
3391 fftdnoiz_filter_deps="avcodec"
3392 fftdnoiz_filter_select="fft"
3393 find_rect_filter_deps="avcodec avformat gpl"
3394 firequalizer_filter_deps="avcodec"
3395 firequalizer_filter_select="rdft"
3396 flite_filter_deps="libflite"
3397 framerate_filter_select="pixelutils"
3398 frei0r_filter_deps="frei0r libdl"
3399 frei0r_src_filter_deps="frei0r libdl"
3400 fspp_filter_deps="gpl"
3401 geq_filter_deps="gpl"
3402 histeq_filter_deps="gpl"
3403 hqdn3d_filter_deps="gpl"
3404 interlace_filter_deps="gpl"
3405 kerndeint_filter_deps="gpl"
3406 ladspa_filter_deps="ladspa libdl"
3407 lensfun_filter_deps="liblensfun version3"
3408 lv2_filter_deps="lv2"
3409 mcdeint_filter_deps="avcodec gpl"
3410 movie_filter_deps="avcodec avformat"
3411 mpdecimate_filter_deps="gpl"
3412 mpdecimate_filter_select="pixelutils"
3413 mptestsrc_filter_deps="gpl"
3414 negate_filter_deps="lut_filter"
3415 nnedi_filter_deps="gpl"
3416 ocr_filter_deps="libtesseract"
3417 ocv_filter_deps="libopencv"
3418 openclsrc_filter_deps="opencl"
3419 overlay_opencl_filter_deps="opencl"
3420 overlay_qsv_filter_deps="libmfx"
3421 overlay_qsv_filter_select="qsvvpp"
3422 owdenoise_filter_deps="gpl"
3423 pan_filter_deps="swresample"
3424 perspective_filter_deps="gpl"
3425 phase_filter_deps="gpl"
3426 pp7_filter_deps="gpl"
3427 pp_filter_deps="gpl postproc"
3428 prewitt_opencl_filter_deps="opencl"
3429 procamp_vaapi_filter_deps="vaapi"
3430 program_opencl_filter_deps="opencl"
3431 pullup_filter_deps="gpl"
3432 removelogo_filter_deps="avcodec avformat swscale"
3433 repeatfields_filter_deps="gpl"
3434 resample_filter_deps="avresample"
3435 roberts_opencl_filter_deps="opencl"
3436 rubberband_filter_deps="librubberband"
3437 sab_filter_deps="gpl swscale"
3438 scale2ref_filter_deps="swscale"
3439 scale_filter_deps="swscale"
3440 scale_qsv_filter_deps="libmfx"
3441 select_filter_select="pixelutils"
3442 sharpness_vaapi_filter_deps="vaapi"
3443 showcqt_filter_deps="avcodec avformat swscale"
3444 showcqt_filter_suggest="libfontconfig libfreetype"
3445 showcqt_filter_select="fft"
3446 showfreqs_filter_deps="avcodec"
3447 showfreqs_filter_select="fft"
3448 showspectrum_filter_deps="avcodec"
3449 showspectrum_filter_select="fft"
3450 showspectrumpic_filter_deps="avcodec"
3451 showspectrumpic_filter_select="fft"
3452 signature_filter_deps="gpl avcodec avformat"
3453 smartblur_filter_deps="gpl swscale"
3454 sobel_opencl_filter_deps="opencl"
3455 sofalizer_filter_deps="libmysofa avcodec"
3456 sofalizer_filter_select="fft"
3457 spectrumsynth_filter_deps="avcodec"
3458 spectrumsynth_filter_select="fft"
3459 spp_filter_deps="gpl avcodec"
3460 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3461 sr_filter_deps="avformat swscale"
3462 sr_filter_select="dnn"
3463 stereo3d_filter_deps="gpl"
3464 subtitles_filter_deps="avformat avcodec libass"
3465 super2xsai_filter_deps="gpl"
3466 pixfmts_super2xsai_test_deps="super2xsai_filter"
3467 tinterlace_filter_deps="gpl"
3468 tinterlace_merge_test_deps="tinterlace_filter"
3469 tinterlace_pad_test_deps="tinterlace_filter"
3470 tonemap_filter_deps="const_nan"
3471 tonemap_opencl_filter_deps="opencl const_nan"
3472 unsharp_opencl_filter_deps="opencl"
3473 uspp_filter_deps="gpl avcodec"
3474 vaguedenoiser_filter_deps="gpl"
3475 vidstabdetect_filter_deps="libvidstab"
3476 vidstabtransform_filter_deps="libvidstab"
3477 libvmaf_filter_deps="libvmaf pthreads"
3478 zmq_filter_deps="libzmq"
3479 zoompan_filter_deps="swscale"
3480 zscale_filter_deps="libzimg const_nan"
3481 scale_vaapi_filter_deps="vaapi"
3482 vpp_qsv_filter_deps="libmfx"
3483 vpp_qsv_filter_select="qsvvpp"
3484
3485 # examples
3486 avio_dir_cmd_deps="avformat avutil"
3487 avio_reading_deps="avformat avcodec avutil"
3488 decode_audio_example_deps="avcodec avutil"
3489 decode_video_example_deps="avcodec avutil"
3490 demuxing_decoding_example_deps="avcodec avformat avutil"
3491 encode_audio_example_deps="avcodec avutil"
3492 encode_video_example_deps="avcodec avutil"
3493 extract_mvs_example_deps="avcodec avformat avutil"
3494 filter_audio_example_deps="avfilter avutil"
3495 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3496 filtering_video_example_deps="avfilter avcodec avformat avutil"
3497 http_multiclient_example_deps="avformat avutil fork"
3498 hw_decode_example_deps="avcodec avformat avutil"
3499 metadata_example_deps="avformat avutil"
3500 muxing_example_deps="avcodec avformat avutil swscale"
3501 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3502 remuxing_example_deps="avcodec avformat avutil"
3503 resampling_audio_example_deps="avutil swresample"
3504 scaling_video_example_deps="avutil swscale"
3505 transcode_aac_example_deps="avcodec avformat swresample"
3506 transcoding_example_deps="avfilter avcodec avformat avutil"
3507 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3508 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3509
3510 # EXTRALIBS_LIST
3511 cpu_init_extralibs="pthreads_extralibs"
3512 cws2fws_extralibs="zlib_extralibs"
3513
3514 # libraries, in any order
3515 avcodec_deps="avutil"
3516 avcodec_suggest="libm"
3517 avcodec_select="null_bsf"
3518 avdevice_deps="avformat avcodec avutil"
3519 avdevice_suggest="libm"
3520 avfilter_deps="avutil"
3521 avfilter_suggest="libm"
3522 avformat_deps="avcodec avutil"
3523 avformat_suggest="libm network zlib"
3524 avresample_deps="avutil"
3525 avresample_suggest="libm"
3526 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3527 postproc_deps="avutil gpl"
3528 postproc_suggest="libm"
3529 swresample_deps="avutil"
3530 swresample_suggest="libm libsoxr"
3531 swscale_deps="avutil"
3532 swscale_suggest="libm"
3533
3534 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3535 avfilter_extralibs="pthreads_extralibs"
3536 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3537
3538 # programs
3539 ffmpeg_deps="avcodec avfilter avformat"
3540 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3541                null_filter
3542                trim_filter"
3543 ffmpeg_suggest="ole32 psapi shell32"
3544 ffplay_deps="avcodec avformat swscale swresample sdl2"
3545 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3546 ffplay_suggest="shell32"
3547 ffprobe_deps="avcodec avformat"
3548 ffprobe_suggest="shell32"
3549
3550 # documentation
3551 podpages_deps="perl"
3552 manpages_deps="perl pod2man"
3553 htmlpages_deps="perl"
3554 htmlpages_deps_any="makeinfo_html texi2html"
3555 txtpages_deps="perl makeinfo"
3556 doc_deps_any="manpages htmlpages podpages txtpages"
3557
3558 # default parameters
3559
3560 logfile="ffbuild/config.log"
3561
3562 # installation paths
3563 prefix_default="/usr/local"
3564 bindir_default='${prefix}/bin'
3565 datadir_default='${prefix}/share/ffmpeg'
3566 docdir_default='${prefix}/share/doc/ffmpeg'
3567 incdir_default='${prefix}/include'
3568 libdir_default='${prefix}/lib'
3569 mandir_default='${prefix}/share/man'
3570
3571 # toolchain
3572 ar_default="ar"
3573 cc_default="gcc"
3574 cxx_default="g++"
3575 host_cc_default="gcc"
3576 doxygen_default="doxygen"
3577 install="install"
3578 ln_s_default="ln -s -f"
3579 nm_default="nm -g"
3580 pkg_config_default=pkg-config
3581 ranlib_default="ranlib"
3582 strip_default="strip"
3583 version_script='--version-script'
3584 objformat="elf32"
3585 x86asmexe_default="nasm"
3586 windres_default="windres"
3587 nvcc_default="nvcc"
3588 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3589 striptype="direct"
3590
3591 # OS
3592 target_os_default=$(tolower $(uname -s))
3593 host_os=$target_os_default
3594
3595 # machine
3596 if test "$target_os_default" = aix; then
3597     arch_default=$(uname -p)
3598     strip_default="strip -X32_64"
3599 else
3600     arch_default=$(uname -m)
3601 fi
3602 cpu="generic"
3603 intrinsics="none"
3604
3605 # configurable options
3606 enable $PROGRAM_LIST
3607 enable $DOCUMENT_LIST
3608 enable $EXAMPLE_LIST
3609 enable $(filter_out avresample $LIBRARY_LIST)
3610 enable stripping
3611
3612 enable asm
3613 enable debug
3614 enable doc
3615 enable faan faandct faanidct
3616 enable optimizations
3617 enable runtime_cpudetect
3618 enable safe_bitstream_reader
3619 enable static
3620 enable swscale_alpha
3621 enable valgrind_backtrace
3622
3623 sws_max_filter_size_default=256
3624 set_default sws_max_filter_size
3625
3626 # internal components are enabled by default
3627 enable $EXTRALIBS_LIST
3628
3629 # Avoid external, non-system, libraries getting enabled by dependency resolution
3630 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3631
3632 # build settings
3633 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3634 LIBPREF="lib"
3635 LIBSUF=".a"
3636 FULLNAME='$(NAME)$(BUILDSUF)'
3637 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3638 SLIBPREF="lib"
3639 SLIBSUF=".so"
3640 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3641 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3642 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3643 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3644 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3645 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3646 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3647
3648 asflags_filter=echo
3649 cflags_filter=echo
3650 ldflags_filter=echo
3651
3652 AS_C='-c'
3653 AS_O='-o $@'
3654 CC_C='-c'
3655 CC_E='-E -o $@'
3656 CC_O='-o $@'
3657 CXX_C='-c'
3658 CXX_O='-o $@'
3659 OBJCC_C='-c'
3660 OBJCC_E='-E -o $@'
3661 OBJCC_O='-o $@'
3662 X86ASM_O='-o $@'
3663 LD_O='-o $@'
3664 LD_LIB='-l%'
3665 LD_PATH='-L'
3666 HOSTCC_C='-c'
3667 HOSTCC_E='-E -o $@'
3668 HOSTCC_O='-o $@'
3669 HOSTLD_O='-o $@'
3670 NVCC_C='-c'
3671 NVCC_O='-o $@'
3672
3673 host_extralibs='-lm'
3674 host_cflags_filter=echo
3675 host_ldflags_filter=echo
3676
3677 target_path='$(CURDIR)'
3678
3679 # since the object filename is not given with the -MM flag, the compiler
3680 # is only able to print the basename, and we must add the path ourselves
3681 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3682 DEPFLAGS='-MM'
3683
3684 mkdir -p ffbuild
3685
3686 # find source path
3687 if test -f configure; then
3688     source_path=.
3689 else
3690     source_path=$(cd $(dirname "$0"); pwd)
3691     case "$source_path" in
3692         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3693     esac
3694     test -e "$source_path/config.h" &&
3695         die "Out of tree builds are impossible with config.h in source dir."
3696 fi
3697
3698 for v in "$@"; do
3699     r=${v#*=}
3700     l=${v%"$r"}
3701     r=$(sh_quote "$r")
3702     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3703 done
3704
3705 find_things_extern(){
3706     thing=$1
3707     pattern=$2
3708     file=$source_path/$3
3709     out=${4:-$thing}
3710     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3711 }
3712
3713 find_filters_extern(){
3714     file=$source_path/$1
3715     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3716     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3717 }
3718
3719 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3720 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3721 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3722 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3723 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3724 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3725 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3726 CODEC_LIST="
3727     $ENCODER_LIST
3728     $DECODER_LIST
3729 "
3730 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3731 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3732 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3733 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3734
3735 AVCODEC_COMPONENTS_LIST="
3736     $BSF_LIST
3737     $DECODER_LIST
3738     $ENCODER_LIST
3739     $HWACCEL_LIST
3740     $PARSER_LIST
3741 "
3742
3743 AVDEVICE_COMPONENTS_LIST="
3744     $INDEV_LIST
3745     $OUTDEV_LIST
3746 "
3747
3748 AVFILTER_COMPONENTS_LIST="
3749     $FILTER_LIST
3750 "
3751
3752 AVFORMAT_COMPONENTS_LIST="
3753     $DEMUXER_LIST
3754     $MUXER_LIST
3755     $PROTOCOL_LIST
3756 "
3757
3758 ALL_COMPONENTS="
3759     $AVCODEC_COMPONENTS_LIST
3760     $AVDEVICE_COMPONENTS_LIST
3761     $AVFILTER_COMPONENTS_LIST
3762     $AVFORMAT_COMPONENTS_LIST
3763 "
3764
3765 for n in $COMPONENT_LIST; do
3766     v=$(toupper ${n%s})_LIST
3767     eval enable \$$v
3768     eval ${n}_if_any="\$$v"
3769 done
3770
3771 enable $ARCH_EXT_LIST
3772
3773 die_unknown(){
3774     echo "Unknown option \"$1\"."
3775     echo "See $0 --help for available options."
3776     exit 1
3777 }
3778
3779 print_in_columns() {
3780     cols=$(expr $ncols / 24)
3781     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3782 }
3783
3784 show_list() {
3785     suffix=_$1
3786     shift
3787     echo $* | sed s/$suffix//g | print_in_columns
3788     exit 0
3789 }
3790
3791 rand_list(){
3792     IFS=', '
3793     set -- $*
3794     unset IFS
3795     for thing; do
3796         comp=${thing%:*}
3797         prob=${thing#$comp}
3798         prob=${prob#:}
3799         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3800         echo "prob ${prob:-0.5}"
3801         printf '%s\n' $comp
3802     done
3803 }
3804
3805 do_random(){
3806     action=$1
3807     shift
3808     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3809     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3810 }
3811
3812 for opt do
3813     optval="${opt#*=}"
3814     case "$opt" in
3815         --extra-ldflags=*)
3816             add_ldflags $optval
3817         ;;
3818         --extra-ldexeflags=*)
3819             add_ldexeflags $optval
3820         ;;
3821         --extra-ldsoflags=*)
3822             add_ldsoflags $optval
3823         ;;
3824         --extra-ldlibflags=*)
3825             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3826                  "removed in the future. Use --extra-ldsoflags instead."
3827             add_ldsoflags $optval
3828         ;;
3829         --extra-libs=*)
3830             add_extralibs $optval
3831         ;;
3832         --disable-devices)
3833             disable $INDEV_LIST $OUTDEV_LIST
3834         ;;
3835         --enable-debug=*)
3836             debuglevel="$optval"
3837         ;;
3838         --disable-programs)
3839             disable $PROGRAM_LIST
3840         ;;
3841         --disable-everything)
3842             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3843         ;;
3844         --disable-all)
3845             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3846             disable $LIBRARY_LIST $PROGRAM_LIST doc
3847             enable avutil
3848         ;;
3849         --enable-random|--disable-random)
3850             action=${opt%%-random}
3851             do_random ${action#--} $COMPONENT_LIST
3852         ;;
3853         --enable-random=*|--disable-random=*)
3854             action=${opt%%-random=*}
3855             do_random ${action#--} $optval
3856         ;;
3857         --enable-sdl)
3858             enable sdl2
3859         ;;
3860         --enable-*=*|--disable-*=*)
3861             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3862             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3863             eval list=\$$(toupper $thing)_LIST
3864             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3865             list=$(filter "$name" $list)
3866             [ "$list" = "" ] && warn "Option $opt did not match anything"
3867             $action $list
3868         ;;
3869         --enable-yasm|--disable-yasm)
3870             warn "The ${opt} option is only provided for compatibility and will be\n"\
3871                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3872             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3873         ;;
3874         --yasmexe=*)
3875             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3876                  "removed in the future. Use --x86asmexe instead."
3877             x86asmexe="$optval"
3878         ;;
3879         --enable-?*|--disable-?*)
3880             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3881             if is_in $option $COMPONENT_LIST; then
3882                 test $action = disable && action=unset
3883                 eval $action \$$(toupper ${option%s})_LIST
3884             elif is_in $option $CMDLINE_SELECT; then
3885                 $action $option
3886             else
3887                 die_unknown $opt
3888             fi
3889         ;;
3890         --list-*)
3891             NAME="${opt#--list-}"
3892             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3893             NAME=${NAME%s}
3894             eval show_list $NAME \$$(toupper $NAME)_LIST
3895         ;;
3896         --help|-h) show_help
3897         ;;
3898         --quiet|-q) quiet=yes
3899         ;;
3900         --fatal-warnings) enable fatal_warnings
3901         ;;
3902         --libfuzzer=*)
3903             libfuzzer_path="$optval"
3904         ;;
3905         *)
3906             optname="${opt%%=*}"
3907             optname="${optname#--}"
3908             optname=$(echo "$optname" | sed 's/-/_/g')
3909             if is_in $optname $CMDLINE_SET; then
3910                 eval $optname='$optval'
3911             elif is_in $optname $CMDLINE_APPEND; then
3912                 append $optname "$optval"
3913             else
3914                 die_unknown $opt
3915             fi
3916         ;;
3917     esac
3918 done
3919
3920 for e in $env; do
3921     eval "export $e"
3922 done
3923
3924 if disabled autodetect; then
3925
3926     # Unless iconv is explicitely disabled by the user, we still want to probe
3927     # for the iconv from the libc.
3928     disabled iconv || enable libc_iconv
3929
3930     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3931     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3932 fi
3933 # Mark specifically enabled, but normally autodetected libraries as requested.
3934 for lib in $AUTODETECT_LIBS; do
3935     enabled $lib && request $lib
3936 done
3937 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3938 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3939 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3940
3941 disabled logging && logfile=/dev/null
3942
3943 # command line configuration sanity checks
3944
3945 # we need to build at least one lib type
3946 if ! enabled_any static shared; then
3947     cat <<EOF
3948 At least one library type must be built.
3949 Specify --enable-static to build the static libraries or --enable-shared to
3950 build the shared libraries as well. To only build the shared libraries specify
3951 --disable-static in addition to --enable-shared.
3952 EOF
3953     exit 1
3954 fi
3955
3956 die_license_disabled() {
3957     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3958 }
3959
3960 die_license_disabled_gpl() {
3961     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3962 }
3963
3964 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3965 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3966
3967 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3968 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3969
3970 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3971
3972 if enabled nonfree; then
3973     license="nonfree and unredistributable"
3974 elif enabled gplv3; then
3975     license="GPL version 3 or later"
3976 elif enabled lgplv3; then
3977     license="LGPL version 3 or later"
3978 elif enabled gpl; then
3979     license="GPL version 2 or later"
3980 else
3981     license="LGPL version 2.1 or later"
3982 fi
3983
3984 enabled_all gnutls openssl &&
3985     die "GnuTLS and OpenSSL must not be enabled at the same time."
3986
3987 enabled_all gnutls mbedtls &&
3988     die "GnuTLS and mbedTLS must not be enabled at the same time."
3989
3990 enabled_all openssl mbedtls &&
3991     die "OpenSSL and mbedTLS must not be enabled at the same time."
3992
3993 # Disable all the library-specific components if the library itself
3994 # is disabled, see AVCODEC_LIST and following _LIST variables.
3995
3996 disable_components(){
3997     disabled ${1} && disable $(
3998         eval components="\$$(toupper ${1})_COMPONENTS"
3999         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4000     )
4001 }
4002
4003 map 'disable_components $v' $LIBRARY_LIST
4004
4005 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4006 set >> $logfile
4007
4008 test -n "$valgrind" && toolchain="valgrind-memcheck"
4009
4010 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4011     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4012     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4013 }
4014
4015 case "$toolchain" in
4016     *-asan)
4017         cc_default="${toolchain%-asan}"
4018         add_cflags  -fsanitize=address
4019         add_ldflags -fsanitize=address
4020     ;;
4021     *-msan)
4022         cc_default="${toolchain%-msan}"
4023         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4024         add_ldflags -fsanitize=memory
4025     ;;
4026     *-tsan)
4027         cc_default="${toolchain%-tsan}"
4028         add_cflags  -fsanitize=thread
4029         add_ldflags -fsanitize=thread
4030         case "$toolchain" in
4031             gcc-tsan)
4032                 add_cflags  -fPIC
4033                 add_ldflags -fPIC
4034                 ;;
4035         esac
4036     ;;
4037     *-usan)
4038         cc_default="${toolchain%-usan}"
4039         add_cflags  -fsanitize=undefined
4040         add_ldflags -fsanitize=undefined
4041     ;;
4042     valgrind-*)
4043         target_exec_default="valgrind"
4044         case "$toolchain" in
4045             valgrind-massif)
4046                 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"
4047                 ;;
4048             valgrind-memcheck)
4049                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4050                 ;;
4051         esac
4052     ;;
4053     msvc)
4054         # Check whether the current MSVC version needs the C99 converter.
4055         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4056         # support enough of C99 to build ffmpeg. Default to the new
4057         # behaviour if the regexp was unable to match anything, since this
4058         # successfully parses the version number of existing supported
4059         # versions that require the converter (MSVC 2010 and 2012).
4060         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4061         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4062             cc_default="cl"
4063             cxx_default="cl"
4064         else
4065             die "Unsupported MSVC version (2013 or newer required)"
4066         fi
4067         ld_default="$source_path/compat/windows/mslink"
4068         nm_default="dumpbin -symbols"
4069         ar_default="lib"
4070         case "$arch" in
4071         aarch64|arm64)
4072             as_default="armasm64"
4073             ;;
4074         arm*)
4075             as_default="armasm"
4076             ;;
4077         esac
4078         target_os_default="win32"
4079         # Use a relative path for TMPDIR. This makes sure all the
4080         # ffconf temp files are written with a relative path, avoiding
4081         # issues with msys/win32 path conversion for MSVC parameters
4082         # such as -Fo<file> or -out:<file>.
4083         TMPDIR=.
4084     ;;
4085     icl)
4086         cc_default="icl"
4087         ld_default="xilink"
4088         nm_default="dumpbin -symbols"
4089         ar_default="xilib"
4090         target_os_default="win32"
4091         TMPDIR=.
4092     ;;
4093     gcov)
4094         add_cflags  -fprofile-arcs -ftest-coverage
4095         add_ldflags -fprofile-arcs -ftest-coverage
4096     ;;
4097     llvm-cov)
4098         add_cflags -fprofile-arcs -ftest-coverage
4099         add_ldflags --coverage
4100     ;;
4101     hardened)
4102         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4103         add_cflags   -fno-strict-overflow -fstack-protector-all
4104         add_ldflags  -Wl,-z,relro -Wl,-z,now
4105         add_cflags   -fPIE
4106         add_ldexeflags -fPIE -pie
4107     ;;
4108     ?*)
4109         die "Unknown toolchain $toolchain"
4110     ;;
4111 esac
4112
4113 if test -n "$cross_prefix"; then
4114     test -n "$arch" && test -n "$target_os" ||
4115         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4116     enable cross_compile
4117 fi
4118
4119 ar_default="${cross_prefix}${ar_default}"
4120 cc_default="${cross_prefix}${cc_default}"
4121 cxx_default="${cross_prefix}${cxx_default}"
4122 nm_default="${cross_prefix}${nm_default}"
4123 pkg_config_default="${cross_prefix}${pkg_config_default}"
4124 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4125     ranlib_default="${cross_prefix}${ranlib_default} -D"
4126 else
4127     ranlib_default="${cross_prefix}${ranlib_default}"
4128 fi
4129 strip_default="${cross_prefix}${strip_default}"
4130 windres_default="${cross_prefix}${windres_default}"
4131
4132 sysinclude_default="${sysroot}/usr/include"
4133
4134 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4135     target_exec target_os x86asmexe nvcc
4136 enabled cross_compile || host_cc_default=$cc
4137 set_default host_cc
4138
4139 pkg_config_fail_message=""
4140 if ! $pkg_config --version >/dev/null 2>&1; then
4141     warn "$pkg_config not found, library detection may fail."
4142     pkg_config=false
4143 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4144     pkg_config_fail_message="
4145 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4146 fi
4147
4148 if test $doxygen != $doxygen_default && \
4149   ! $doxygen --version >/dev/null 2>&1; then
4150     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4151 fi
4152
4153 exesuf() {
4154     case $1 in
4155         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4156     esac
4157 }
4158
4159 EXESUF=$(exesuf $target_os)
4160 HOSTEXESUF=$(exesuf $host_os)
4161
4162 # set temporary file name
4163 : ${TMPDIR:=$TEMPDIR}
4164 : ${TMPDIR:=$TMP}
4165 : ${TMPDIR:=/tmp}
4166
4167 if [ -n "$tempprefix" ] ; then
4168     mktemp(){
4169         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4170         echo "$tmpname"
4171         mkdir "$tmpname"
4172     }
4173 elif ! test_cmd mktemp -u XXXXXX; then
4174     # simple replacement for missing mktemp
4175     # NOT SAFE FOR GENERAL USE
4176     mktemp(){
4177         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4178         echo "$tmpname"
4179         mkdir "$tmpname"
4180     }
4181 fi
4182
4183 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4184     die "Unable to create temporary directory in $TMPDIR."
4185
4186 tmpfile(){
4187     tmp="${FFTMPDIR}/test"$2
4188     (set -C; exec > $tmp) 2> /dev/null ||
4189         die "Unable to create temporary file in $FFTMPDIR."
4190     eval $1=$tmp
4191 }
4192
4193 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4194 trap 'exit 2' INT
4195
4196 tmpfile TMPASM .asm
4197 tmpfile TMPC   .c
4198 tmpfile TMPCPP .cpp
4199 tmpfile TMPE   $EXESUF
4200 tmpfile TMPH   .h
4201 tmpfile TMPM   .m
4202 tmpfile TMPO   .o
4203 tmpfile TMPS   .S
4204 tmpfile TMPSH  .sh
4205 tmpfile TMPV   .ver
4206
4207 unset -f mktemp
4208
4209 chmod +x $TMPE
4210
4211 # make sure we can execute files in $TMPDIR
4212 cat > $TMPSH 2>> $logfile <<EOF
4213 #! /bin/sh
4214 EOF
4215 chmod +x $TMPSH >> $logfile 2>&1
4216 if ! $TMPSH >> $logfile 2>&1; then
4217     cat <<EOF
4218 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4219 variable to another directory and make sure that it is not mounted noexec.
4220 EOF
4221     die "Sanity test failed."
4222 fi
4223
4224 armasm_flags(){
4225     for flag; do
4226         case $flag in
4227             # Filter out MSVC cl.exe options from cflags that shouldn't
4228             # be passed to gas-preprocessor
4229             -M[TD]*)                                            ;;
4230             *)                  echo $flag                      ;;
4231         esac
4232    done
4233 }
4234
4235 cparser_flags(){
4236     for flag; do
4237         case $flag in
4238             -Wno-switch)             echo -Wno-switch-enum ;;
4239             -Wno-format-zero-length) ;;
4240             -Wdisabled-optimization) ;;
4241             -Wno-pointer-sign)       echo -Wno-other ;;
4242             *)                       echo $flag ;;
4243         esac
4244     done
4245 }
4246
4247 msvc_common_flags(){
4248     for flag; do
4249         case $flag in
4250             # In addition to specifying certain flags under the compiler
4251             # specific filters, they must be specified here as well or else the
4252             # generic catch all at the bottom will print the original flag.
4253             -Wall)                ;;
4254             -Wextra)              ;;
4255             -std=c99)             ;;
4256             # Common flags
4257             -fomit-frame-pointer) ;;
4258             -g)                   echo -Z7 ;;
4259             -fno-math-errno)      ;;
4260             -fno-common)          ;;
4261             -fno-signed-zeros)    ;;
4262             -fPIC)                ;;
4263             -mthumb)              ;;
4264             -march=*)             ;;
4265             -lz)                  echo zlib.lib ;;
4266             -lx264)               echo libx264.lib ;;
4267             -lstdc++)             ;;
4268             -l*)                  echo ${flag#-l}.lib ;;
4269             -LARGEADDRESSAWARE)   echo $flag ;;
4270             -L*)                  echo -libpath:${flag#-L} ;;
4271             *)                    echo $flag ;;
4272         esac
4273     done
4274 }
4275
4276 msvc_flags(){
4277     msvc_common_flags "$@"
4278     for flag; do
4279         case $flag in
4280             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4281                                        -wd4554 ;;
4282             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4283                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4284                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4285                                        -wd4307 \
4286                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4287         esac
4288     done
4289 }
4290
4291 icl_flags(){
4292     msvc_common_flags "$@"
4293     for flag; do
4294         case $flag in
4295             # Despite what Intel's documentation says -Wall, which is supported
4296             # on Windows, does enable remarks so disable them here.
4297             -Wall)                echo $flag -Qdiag-disable:remark ;;
4298             -std=c99)             echo -Qstd=c99 ;;
4299             -flto)                echo -ipo ;;
4300         esac
4301     done
4302 }
4303
4304 icc_flags(){
4305     for flag; do
4306         case $flag in
4307             -flto)                echo -ipo ;;
4308             *)                    echo $flag ;;
4309         esac
4310     done
4311 }
4312
4313 suncc_flags(){
4314     for flag; do
4315         case $flag in
4316             -march=*|-mcpu=*)
4317                 case "${flag#*=}" in
4318                     native)                   echo -xtarget=native       ;;
4319                     v9|niagara)               echo -xarch=sparc          ;;
4320                     ultrasparc)               echo -xarch=sparcvis       ;;
4321                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4322                     i586|pentium)             echo -xchip=pentium        ;;
4323                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4324                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4325                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4326                     pentium4*)          echo -xtarget=pentium4           ;;
4327                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4328                     *-sse3)             echo -xarch=sse3                 ;;
4329                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4330                     bonnell)                   echo -xarch=ssse3         ;;
4331                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4332                     westmere)                  echo -xtarget=westmere    ;;
4333                     silvermont)                echo -xarch=sse4_2        ;;
4334                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4335                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4336                                                echo -xarch=avx           ;;
4337                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4338                     btver1)                    echo -xarch=amdsse4a      ;;
4339                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4340                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4341                     k8|opteron|athlon64|athlon-fx)
4342                                                echo -xarch=sse2a         ;;
4343                     athlon*)                   echo -xarch=pentium_proa  ;;
4344                 esac
4345                 ;;
4346             -std=c99)             echo -xc99              ;;
4347             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4348             -fPIC)                echo -KPIC -xcode=pic32 ;;
4349             -W*,*)                echo $flag              ;;
4350             -f*-*|-W*|-mimpure-text)                      ;;
4351             -shared)              echo -G                 ;;
4352             *)                    echo $flag              ;;
4353         esac
4354     done
4355 }
4356
4357 probe_cc(){
4358     pfx=$1
4359     _cc=$2
4360     first=$3
4361
4362     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4363     unset _ld_o _ldflags _ld_lib _ld_path
4364     unset _depflags _DEPCMD _DEPFLAGS
4365     _flags_filter=echo
4366
4367     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4368         true # no-op to avoid reading stdin in following checks
4369     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4370         _type=llvm_gcc
4371         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4372         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4373         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4374         _cflags_speed='-O3'
4375         _cflags_size='-Os'
4376     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4377         _type=gcc
4378         gcc_version=$($_cc --version | head -n1)
4379         gcc_basever=$($_cc -dumpversion)
4380         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4381         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4382         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4383         case $gcc_basever in
4384             2) ;;
4385             2.*) ;;
4386             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4387         esac
4388         if [ "$first" = true ]; then
4389             case $gcc_basever in
4390                 4.2*)
4391                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4392             esac
4393         fi
4394         _cflags_speed='-O3'
4395         _cflags_size='-Os'
4396     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4397         _type=icc
4398         _ident=$($_cc --version | head -n1)
4399         _depflags='-MMD'
4400         _cflags_speed='-O3'
4401         _cflags_size='-Os'
4402         _cflags_noopt='-O1'
4403         _flags_filter=icc_flags
4404     elif $_cc -v 2>&1 | grep -q xlc; then
4405         _type=xlc
4406         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4407         _cflags_speed='-O5'
4408         _cflags_size='-O5 -qcompact'
4409     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4410         test -d "$sysroot" || die "No valid sysroot specified."
4411         _type=armcc
4412         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4413         armcc_conf="$PWD/armcc.conf"
4414         $_cc --arm_linux_configure                 \
4415              --arm_linux_config_file="$armcc_conf" \
4416              --configure_sysroot="$sysroot"        \
4417              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4418              die "Error creating armcc configuration file."
4419         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4420         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4421         as_default="${cross_prefix}gcc"
4422         _depflags='-MMD'
4423         _cflags_speed='-O3'
4424         _cflags_size='-Os'
4425     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4426         _type=clang
4427         _ident=$($_cc --version 2>/dev/null | head -n1)
4428         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4429         _cflags_speed='-O3'
4430         _cflags_size='-Oz'
4431     elif $_cc -V 2>&1 | grep -q Sun; then
4432         _type=suncc
4433         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4434         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4435         _DEPFLAGS='-xM1 -xc99'
4436         _ldflags='-std=c99'
4437         _cflags_speed='-O5'
4438         _cflags_size='-O5 -xspace'
4439         _flags_filter=suncc_flags
4440     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4441         _type=pathscale
4442         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4443         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4444         _cflags_speed='-O2'
4445         _cflags_size='-Os'
4446         _flags_filter='filter_out -Wdisabled-optimization'
4447     elif $_cc -v 2>&1 | grep -q Open64; then
4448         _type=open64
4449         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4450         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4451         _cflags_speed='-O2'
4452         _cflags_size='-Os'
4453         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4454     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4455         _type=armasm
4456         _ident=$($_cc | head -n1)
4457         # 4509: "This form of conditional instruction is deprecated"
4458         _flags="-nologo -ignore 4509"
4459         _flags_filter=armasm_flags
4460     elif $_cc 2>&1 | grep -q Intel; then
4461         _type=icl
4462         _ident=$($_cc 2>&1 | head -n1)
4463         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4464         # Not only is O3 broken on 13.x+ but it is slower on all previous
4465         # versions (tested) as well.
4466         _cflags_speed="-O2"
4467         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4468         if $_cc 2>&1 | grep -q Linker; then
4469             _ld_o='-out:$@'
4470         else
4471             _ld_o='-Fe$@'
4472         fi
4473         _cc_o='-Fo$@'
4474         _cc_e='-P'
4475         _flags_filter=icl_flags
4476         _ld_lib='lib%.a'
4477         _ld_path='-libpath:'
4478         # -Qdiag-error to make icl error when seeing certain unknown arguments
4479         _flags='-nologo -Qdiag-error:4044,10157'
4480         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4481         # with MSVC which enables it by default.
4482         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4483         disable stripping
4484     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4485         # lld can emulate multiple different linkers; in ms link.exe mode,
4486         # the -? parameter gives the help output which contains an identifyable
4487         # string, while it gives an error in other modes.
4488         _type=lld-link
4489         # The link.exe mode doesn't have a switch for getting the version,
4490         # but we can force it back to gnu mode and get the version from there.
4491         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4492         _ld_o='-out:$@'
4493         _flags_filter=msvc_flags
4494         _ld_lib='lib%.a'
4495         _ld_path='-libpath:'
4496     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4497         _type=msvc
4498         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4499         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4500         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4501         _cflags_speed="-O2"
4502         _cflags_size="-O1"
4503         _cflags_noopt="-O1"
4504         if $_cc -nologo- 2>&1 | grep -q Linker; then
4505             _ld_o='-out:$@'
4506         else
4507             _ld_o='-Fe$@'
4508         fi
4509         _cc_o='-Fo$@'
4510         _cc_e='-P -Fi$@'
4511         _flags_filter=msvc_flags
4512         _ld_lib='lib%.a'
4513         _ld_path='-libpath:'
4514         _flags='-nologo'
4515         disable stripping
4516     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4517         _type=cparser
4518         _ident=$($_cc --version | head -n1)
4519         _depflags='-MMD'
4520         _cflags_speed='-O4'
4521         _cflags_size='-O2'
4522         _flags_filter=cparser_flags
4523     fi
4524
4525     eval ${pfx}_type=\$_type
4526     eval ${pfx}_ident=\$_ident
4527 }
4528
4529 set_ccvars(){
4530     eval ${1}_C=\${_cc_c-\${${1}_C}}
4531     eval ${1}_E=\${_cc_e-\${${1}_E}}
4532     eval ${1}_O=\${_cc_o-\${${1}_O}}
4533
4534     if [ -n "$_depflags" ]; then
4535         eval ${1}_DEPFLAGS=\$_depflags
4536     else
4537         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4538         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4539         eval DEP${1}FLAGS=\$_flags
4540     fi
4541 }
4542
4543 probe_cc cc "$cc" "true"
4544 cflags_filter=$_flags_filter
4545 cflags_speed=$_cflags_speed
4546 cflags_size=$_cflags_size
4547 cflags_noopt=$_cflags_noopt
4548 add_cflags $_flags $_cflags
4549 cc_ldflags=$_ldflags
4550 set_ccvars CC
4551 set_ccvars CXX
4552
4553 probe_cc hostcc "$host_cc"
4554 host_cflags_filter=$_flags_filter
4555 host_cflags_speed=$_cflags_speed
4556 add_host_cflags  $_flags $_cflags
4557 set_ccvars HOSTCC
4558
4559 test -n "$cc_type" && enable $cc_type ||
4560     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4561
4562 : ${as_default:=$cc}
4563 : ${objcc_default:=$cc}
4564 : ${dep_cc_default:=$cc}
4565 : ${ld_default:=$cc}
4566 : ${host_ld_default:=$host_cc}
4567 set_default ar as objcc dep_cc ld ln_s host_ld windres
4568
4569 probe_cc as "$as"
4570 asflags_filter=$_flags_filter
4571 add_asflags $_flags $_cflags
4572 set_ccvars AS
4573
4574 probe_cc objcc "$objcc"
4575 objcflags_filter=$_flags_filter
4576 add_objcflags $_flags $_cflags
4577 set_ccvars OBJC
4578
4579 probe_cc ld "$ld"
4580 ldflags_filter=$_flags_filter
4581 add_ldflags $_flags $_ldflags
4582 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4583 LD_O=${_ld_o-$LD_O}
4584 LD_LIB=${_ld_lib-$LD_LIB}
4585 LD_PATH=${_ld_path-$LD_PATH}
4586
4587 probe_cc hostld "$host_ld"
4588 host_ldflags_filter=$_flags_filter
4589 add_host_ldflags $_flags $_ldflags
4590 HOSTLD_O=${_ld_o-$HOSTLD_O}
4591
4592 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4593     probe_cc depcc "$dep_cc"
4594     CCDEP=${_DEPCMD:-$DEPCMD}
4595     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4596     DEPCCFLAGS=$_flags
4597 fi
4598
4599 if $ar 2>&1 | grep -q Microsoft; then
4600     arflags="-nologo"
4601     ar_o='-out:$@'
4602 elif $ar 2>&1 | grep -q "\[D\] "; then
4603     arflags="rcD"
4604     ar_o='$@'
4605 else
4606     arflags="rc"
4607     ar_o='$@'
4608 fi
4609
4610 add_cflags $extra_cflags
4611 add_cxxflags $extra_cxxflags
4612 add_objcflags $extra_objcflags
4613 add_asflags $extra_cflags
4614
4615 if test -n "$sysroot"; then
4616     case "$cc_type" in
4617         gcc|llvm_gcc|clang)
4618             add_cppflags --sysroot="$sysroot"
4619             add_ldflags --sysroot="$sysroot"
4620         ;;
4621     esac
4622 fi
4623
4624 if test "$cpu" = host; then
4625     enabled cross_compile &&
4626         die "--cpu=host makes no sense when cross-compiling."
4627
4628     case "$cc_type" in
4629         gcc|llvm_gcc)
4630             check_native(){
4631                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4632                 sed -n "/cc1.*$1=/{
4633                             s/.*$1=\\([^ ]*\\).*/\\1/
4634                             p
4635                             q
4636                         }" $TMPE
4637             }
4638             cpu=$(check_native -march || check_native -mcpu)
4639         ;;
4640         clang)
4641             check_native(){
4642                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4643                 sed -n "/cc1.*-target-cpu /{
4644                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4645                             p
4646                             q
4647                         }" $TMPE
4648             }
4649             cpu=$(check_native -march)
4650         ;;
4651     esac
4652
4653     test "${cpu:-host}" = host &&
4654         die "--cpu=host not supported with compiler $cc"
4655 fi
4656
4657 # Deal with common $arch aliases
4658 case "$arch" in
4659     aarch64|arm64)
4660         arch="aarch64"
4661     ;;
4662     arm*|iPad*|iPhone*)
4663         arch="arm"
4664     ;;
4665     mips*|IP*)
4666         case "$arch" in
4667         *el)
4668             add_cppflags -EL
4669             add_ldflags -EL
4670         ;;
4671         *eb)
4672             add_cppflags -EB
4673             add_ldflags -EB
4674         ;;
4675         esac
4676         arch="mips"
4677     ;;
4678     parisc*|hppa*)
4679         arch="parisc"
4680     ;;
4681     "Power Macintosh"|ppc*|powerpc*)
4682         arch="ppc"
4683     ;;
4684     s390|s390x)
4685         arch="s390"
4686     ;;
4687     sh4|sh)
4688         arch="sh4"
4689     ;;
4690     sun4*|sparc*)
4691         arch="sparc"
4692     ;;
4693     tilegx|tile-gx)
4694         arch="tilegx"
4695     ;;
4696     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4697         arch="x86"
4698     ;;
4699 esac
4700
4701 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4702 enable $arch
4703
4704 # Add processor-specific flags
4705 if enabled aarch64; then
4706
4707     case $cpu in
4708         armv*)
4709             cpuflags="-march=$cpu"
4710         ;;
4711         *)
4712             cpuflags="-mcpu=$cpu"
4713         ;;
4714     esac
4715
4716 elif enabled alpha; then
4717
4718     cpuflags="-mcpu=$cpu"
4719
4720 elif enabled arm; then
4721
4722     check_arm_arch() {
4723         test_cpp_condition stddef.h \
4724             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4725             $cpuflags
4726     }
4727
4728     probe_arm_arch() {
4729         if   check_arm_arch 4;        then echo armv4
4730         elif check_arm_arch 4T;       then echo armv4t
4731         elif check_arm_arch 5;        then echo armv5
4732         elif check_arm_arch 5E;       then echo armv5e
4733         elif check_arm_arch 5T;       then echo armv5t
4734         elif check_arm_arch 5TE;      then echo armv5te
4735         elif check_arm_arch 5TEJ;     then echo armv5te
4736         elif check_arm_arch 6;        then echo armv6
4737         elif check_arm_arch 6J;       then echo armv6j
4738         elif check_arm_arch 6K;       then echo armv6k
4739         elif check_arm_arch 6Z;       then echo armv6z
4740         elif check_arm_arch 6KZ;      then echo armv6zk
4741         elif check_arm_arch 6ZK;      then echo armv6zk
4742         elif check_arm_arch 6T2;      then echo armv6t2
4743         elif check_arm_arch 7;        then echo armv7
4744         elif check_arm_arch 7A  7_A;  then echo armv7-a
4745         elif check_arm_arch 7S;       then echo armv7-a
4746         elif check_arm_arch 7R  7_R;  then echo armv7-r
4747         elif check_arm_arch 7M  7_M;  then echo armv7-m
4748         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4749         elif check_arm_arch 8A  8_A;  then echo armv8-a
4750         fi
4751     }
4752
4753     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4754
4755     case $cpu in
4756         armv*)
4757             cpuflags="-march=$cpu"
4758             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4759         ;;
4760         *)
4761             cpuflags="-mcpu=$cpu"
4762             case $cpu in
4763                 cortex-a*)                               subarch=armv7a  ;;
4764                 cortex-r*)                               subarch=armv7r  ;;
4765                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4766                 arm11*)                                  subarch=armv6   ;;
4767                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4768                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4769                 *)                             subarch=$(probe_arm_arch) ;;
4770             esac
4771         ;;
4772     esac
4773
4774     case "$subarch" in
4775         armv5t*)    enable fast_clz                ;;
4776         armv[6-8]*)
4777             enable fast_clz
4778             disabled fast_unaligned || enable fast_unaligned
4779             ;;
4780     esac
4781
4782 elif enabled avr32; then
4783
4784     case $cpu in
4785         ap7[02]0[0-2])
4786             subarch="avr32_ap"
4787             cpuflags="-mpart=$cpu"
4788         ;;
4789         ap)
4790             subarch="avr32_ap"
4791             cpuflags="-march=$cpu"
4792         ;;
4793         uc3[ab]*)
4794             subarch="avr32_uc"
4795             cpuflags="-mcpu=$cpu"
4796         ;;
4797         uc)
4798             subarch="avr32_uc"
4799             cpuflags="-march=$cpu"
4800         ;;
4801     esac
4802
4803 elif enabled bfin; then
4804
4805     cpuflags="-mcpu=$cpu"
4806
4807 elif enabled mips; then
4808
4809     cpuflags="-march=$cpu"
4810
4811     if [ "$cpu" != "generic" ]; then
4812         disable mips32r2
4813         disable mips32r5
4814         disable mips64r2
4815         disable mips32r6
4816         disable mips64r6
4817         disable loongson2
4818         disable loongson3
4819
4820         case $cpu in
4821             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4822                 enable mips32r2
4823                 disable msa
4824             ;;
4825             p5600|i6400|p6600)
4826                 disable mipsdsp
4827                 disable mipsdspr2
4828             ;;
4829             loongson*)
4830                 enable loongson2
4831                 enable loongson3
4832                 enable local_aligned
4833                 enable simd_align_16
4834                 enable fast_64bit
4835                 enable fast_clz
4836                 enable fast_cmov
4837                 enable fast_unaligned
4838                 disable aligned_stack
4839                 disable mipsfpu
4840                 disable mipsdsp
4841                 disable mipsdspr2
4842                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4843                 if [ $cc == gcc ]; then
4844                     gcc_version=$(gcc -dumpversion)
4845                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4846                         expensive_optimization_flag=""
4847                     else
4848                         expensive_optimization_flag="-fno-expensive-optimizations"
4849                     fi
4850                 fi
4851                 case $cpu in
4852                     loongson3*)
4853                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4854                     ;;
4855                     loongson2e)
4856                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4857                     ;;
4858                     loongson2f)
4859                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4860                     ;;
4861                 esac
4862             ;;
4863             *)
4864                 # Unknown CPU. Disable everything.
4865                 warn "unknown CPU. Disabling all MIPS optimizations."
4866                 disable mipsfpu
4867                 disable mipsdsp
4868                 disable mipsdspr2
4869                 disable msa
4870                 disable mmi
4871             ;;
4872         esac
4873
4874         case $cpu in
4875             24kc)
4876                 disable mipsfpu
4877                 disable mipsdsp
4878                 disable mipsdspr2
4879             ;;
4880             24kf*)
4881                 disable mipsdsp
4882                 disable mipsdspr2
4883             ;;
4884             24kec|34kc|1004kc)
4885                 disable mipsfpu
4886                 disable mipsdspr2
4887             ;;
4888             24kef*|34kf*|1004kf*)
4889                 disable mipsdspr2
4890             ;;
4891             74kc)
4892                 disable mipsfpu
4893             ;;
4894             p5600)
4895                 enable mips32r5
4896                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4897             ;;
4898             i6400)
4899                 enable mips64r6
4900                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4901             ;;
4902             p6600)
4903                 enable mips64r6
4904                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4905             ;;
4906         esac
4907     else
4908         # We do not disable anything. Is up to the user to disable the unwanted features.
4909         warn 'generic cpu selected'
4910     fi
4911
4912 elif enabled ppc; then
4913
4914     disable ldbrx
4915
4916     case $(tolower $cpu) in
4917         601|ppc601|powerpc601)
4918             cpuflags="-mcpu=601"
4919             disable altivec
4920         ;;
4921         603*|ppc603*|powerpc603*)
4922             cpuflags="-mcpu=603"
4923             disable altivec
4924         ;;
4925         604*|ppc604*|powerpc604*)
4926             cpuflags="-mcpu=604"
4927             disable altivec
4928         ;;
4929         g3|75*|ppc75*|powerpc75*)
4930             cpuflags="-mcpu=750"
4931             disable altivec
4932         ;;
4933         g4|745*|ppc745*|powerpc745*)
4934             cpuflags="-mcpu=7450"
4935             disable vsx
4936         ;;
4937         74*|ppc74*|powerpc74*)
4938             cpuflags="-mcpu=7400"
4939             disable vsx
4940         ;;
4941         g5|970|ppc970|powerpc970)
4942             cpuflags="-mcpu=970"
4943             disable vsx
4944         ;;
4945         power[3-6]*)
4946             cpuflags="-mcpu=$cpu"
4947             disable vsx
4948         ;;
4949         power[7-8]*)
4950             cpuflags="-mcpu=$cpu"
4951         ;;
4952         cell)
4953             cpuflags="-mcpu=cell"
4954             enable ldbrx
4955             disable vsx
4956         ;;
4957         e500mc)
4958             cpuflags="-mcpu=e500mc"
4959             disable altivec
4960         ;;
4961         e500v2)
4962             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4963             disable altivec
4964             disable dcbzl
4965         ;;
4966         e500)
4967             cpuflags="-mcpu=8540 -mhard-float"
4968             disable altivec
4969             disable dcbzl
4970         ;;
4971     esac
4972
4973 elif enabled sparc; then
4974
4975     case $cpu in
4976         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4977             cpuflags="-mcpu=$cpu"
4978         ;;
4979         ultrasparc*|niagara[234])
4980             cpuflags="-mcpu=$cpu"
4981         ;;
4982     esac
4983
4984 elif enabled x86; then
4985
4986     case $cpu in
4987         i[345]86|pentium)
4988             cpuflags="-march=$cpu"
4989             disable i686
4990             disable mmx
4991         ;;
4992         # targets that do NOT support nopl and conditional mov (cmov)
4993         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4994             cpuflags="-march=$cpu"
4995             disable i686
4996         ;;
4997         # targets that do support nopl and conditional mov (cmov)
4998         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4999         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5000         |amdfam10|barcelona|b[dt]ver*|znver*)
5001             cpuflags="-march=$cpu"
5002             enable i686
5003             enable fast_cmov
5004         ;;
5005         # targets that do support conditional mov but on which it's slow
5006         pentium4|pentium4m|prescott|nocona)
5007             cpuflags="-march=$cpu"
5008             enable i686
5009             disable fast_cmov
5010         ;;
5011     esac
5012
5013 fi
5014
5015 if [ "$cpu" != generic ]; then
5016     add_cflags  $cpuflags
5017     add_asflags $cpuflags
5018     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5019 fi
5020
5021 # compiler sanity check
5022 test_exec <<EOF
5023 int main(void){ return 0; }
5024 EOF
5025 if test "$?" != 0; then
5026     echo "$cc is unable to create an executable file."
5027     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5028         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5029         echo "Only do this if you know what cross compiling means."
5030     fi
5031     die "C compiler test failed."
5032 fi
5033
5034 add_cppflags -D_ISOC99_SOURCE
5035 add_cxxflags -D__STDC_CONSTANT_MACROS
5036 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5037
5038 # some compilers silently accept -std=c11, so we also need to check that the
5039 # version macro is defined properly
5040 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5041     add_cflags -std=c11 ||
5042     check_cflags -std=c99
5043
5044 check_cppflags -D_FILE_OFFSET_BITS=64
5045 check_cppflags -D_LARGEFILE_SOURCE
5046
5047 add_host_cppflags -D_ISOC99_SOURCE
5048 check_host_cflags -std=c99
5049 check_host_cflags -Wall
5050 check_host_cflags $host_cflags_speed
5051
5052 check_64bit(){
5053     arch32=$1
5054     arch64=$2
5055     expr=${3:-'sizeof(void *) > 4'}
5056     test_code cc "" "int test[2*($expr) - 1]" &&
5057         subarch=$arch64 || subarch=$arch32
5058     enable $subarch
5059 }
5060
5061 case "$arch" in
5062     aarch64|alpha|ia64)
5063         enabled shared && enable_weak pic
5064     ;;
5065     mips)
5066         check_64bit mips mips64 '_MIPS_SIM > 1'
5067         enabled shared && enable_weak pic
5068     ;;
5069     parisc)
5070         check_64bit parisc parisc64
5071         enabled shared && enable_weak pic
5072     ;;
5073     ppc)
5074         check_64bit ppc ppc64
5075         enabled shared && enable_weak pic
5076     ;;
5077     s390)
5078         check_64bit s390 s390x
5079         enabled shared && enable_weak pic
5080     ;;
5081     sparc)
5082         check_64bit sparc sparc64
5083         enabled shared && enable_weak pic
5084     ;;
5085     x86)
5086         check_64bit x86_32 x86_64
5087         # Treat x32 as x64 for now. Note it also needs pic if shared
5088         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5089             subarch=x86_64 && enable x86_64 && disable x86_32
5090         if enabled x86_64; then
5091             enabled shared && enable_weak pic
5092             objformat=elf64
5093         fi
5094     ;;
5095 esac
5096
5097 # OS specific
5098 case $target_os in
5099     aix)
5100         SHFLAGS=-shared
5101         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5102         enabled shared && add_ldflags -Wl,-brtl
5103         arflags='-Xany -r -c'
5104         striptype=""
5105         ;;
5106     android)
5107         disable symver
5108         enable section_data_rel_ro
5109         add_cflags -fPIE
5110         add_ldexeflags -fPIE -pie
5111         SLIB_INSTALL_NAME='$(SLIBNAME)'
5112         SLIB_INSTALL_LINKS=
5113         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5114         ;;
5115     haiku)
5116         prefix_default="/boot/common"
5117         network_extralibs="-lnetwork"
5118         host_extralibs=
5119         ;;
5120     sunos)
5121         SHFLAGS='-shared -Wl,-h,$$(@F)'
5122         enabled x86 && append SHFLAGS -mimpure-text
5123         network_extralibs="-lsocket -lnsl"
5124         add_cppflags -D__EXTENSIONS__
5125         # When using suncc to build, the Solaris linker will mark
5126         # an executable with each instruction set encountered by
5127         # the Solaris assembler.  As our libraries contain their own
5128         # guards for processor-specific code, instead suppress
5129         # generation of the HWCAPS ELF section on Solaris x86 only.
5130         enabled_all suncc x86 &&
5131             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5132             add_ldflags -Wl,-M,mapfile
5133         nm_default='nm -P -g'
5134         version_script='-M'
5135         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5136         ;;
5137     netbsd)
5138         disable symver
5139         oss_indev_extralibs="-lossaudio"
5140         oss_outdev_extralibs="-lossaudio"
5141         enabled gcc || check_ldflags -Wl,-zmuldefs
5142         ;;
5143     openbsd|bitrig)
5144         disable symver
5145         striptype=""
5146         SHFLAGS='-shared'
5147         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5148         SLIB_INSTALL_LINKS=
5149         oss_indev_extralibs="-lossaudio"
5150         oss_outdev_extralibs="-lossaudio"
5151         ;;
5152     dragonfly)
5153         disable symver
5154         ;;
5155     freebsd)
5156         ;;
5157     bsd/os)
5158         add_extralibs -lpoll -lgnugetopt
5159         strip="strip -d"
5160         ;;
5161     darwin)
5162         enabled ppc && add_asflags -force_cpusubtype_ALL
5163         install_name_dir_default='$(SHLIBDIR)'
5164         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5165         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5166         strip="${strip} -x"
5167         add_ldflags -Wl,-dynamic,-search_paths_first
5168         check_cflags -Werror=partial-availability
5169         SLIBSUF=".dylib"
5170         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5171         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5172         enabled x86_64 && objformat="macho64" || objformat="macho32"
5173         enabled_any pic shared x86_64 ||
5174             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5175         check_headers dispatch/dispatch.h &&
5176             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5177         if test -n "$sysroot"; then
5178             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5179             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5180         fi
5181         version_script='-exported_symbols_list'
5182         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5183         ;;
5184     msys*)
5185         die "Native MSYS builds are discouraged, please use the MINGW environment."
5186         ;;
5187     mingw32*|mingw64*)
5188         target_os=mingw32
5189         LIBTARGET=i386
5190         if enabled x86_64; then
5191             LIBTARGET="i386:x86-64"
5192         elif enabled arm; then
5193             LIBTARGET="arm"
5194         elif enabled aarch64; then
5195             LIBTARGET="arm64"
5196         fi
5197         if enabled shared; then
5198             # Cannot build both shared and static libs when using dllimport.
5199             disable static
5200         fi
5201         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5202         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5203         shlibdir_default="$bindir_default"
5204         SLIBPREF=""
5205         SLIBSUF=".dll"
5206         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5207         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5208         if test_cmd lib.exe -list; then
5209             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5210             if enabled x86_64; then
5211                 LIBTARGET=x64
5212             fi
5213         else
5214             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5215         fi
5216         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5217         SLIB_INSTALL_LINKS=
5218         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5219         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5220         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5221         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5222         enabled x86_64 && objformat="win64" || objformat="win32"
5223         dlltool="${cross_prefix}dlltool"
5224         ranlib=:
5225         enable dos_paths
5226         check_ldflags -Wl,--nxcompat,--dynamicbase
5227         # Lets work around some stupidity in binutils.
5228         # ld will strip relocations from executables even though we need them
5229         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5230         # however ld then forgets what the entry point should be (oops) so we
5231         # have to manually (re)set it.
5232         if enabled x86_32; then
5233             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5234         elif enabled x86_64; then
5235             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5236             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5237             # Set image base >4GB for extra entropy with HEASLR
5238             add_ldexeflags -Wl,--image-base,0x140000000
5239             append SHFLAGS -Wl,--image-base,0x180000000
5240         fi
5241         ;;
5242     win32|win64)
5243         disable symver
5244         if enabled shared; then
5245             # Link to the import library instead of the normal static library
5246             # for shared libs.
5247             LD_LIB='%.lib'
5248             # Cannot build both shared and static libs with MSVC or icl.
5249             disable static
5250         fi
5251         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5252         shlibdir_default="$bindir_default"
5253         SLIBPREF=""
5254         SLIBSUF=".dll"
5255         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5256         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5257         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5258         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5259         SLIB_INSTALL_LINKS=
5260         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5261         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5262         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5263         enabled x86_64 && objformat="win64" || objformat="win32"
5264         ranlib=:
5265         enable dos_paths
5266         ;;
5267     cygwin*)
5268         target_os=cygwin
5269         shlibdir_default="$bindir_default"
5270         SLIBPREF="cyg"
5271         SLIBSUF=".dll"
5272         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5273         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5274         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5275         SLIB_INSTALL_LINKS=
5276         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5277         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5278         enabled x86_64 && objformat="win64" || objformat="win32"
5279         enable dos_paths
5280         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5281         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5282         ;;
5283     *-dos|freedos|opendos)
5284         network_extralibs="-lsocket"
5285         objformat="coff"
5286         enable dos_paths
5287         add_cppflags -U__STRICT_ANSI__
5288         ;;
5289     linux)
5290         enable section_data_rel_ro
5291         enabled_any arm aarch64 && enable_weak linux_perf
5292         ;;
5293     irix*)
5294         target_os=irix
5295         ranlib="echo ignoring ranlib"
5296         ;;
5297     os/2*)
5298         strip="lxlite -CS"
5299         striptype=""
5300         objformat="aout"
5301         add_cppflags -D_GNU_SOURCE
5302         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5303         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5304         LIBSUF="_s.a"
5305         SLIBPREF=""
5306         SLIBSUF=".dll"
5307         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5308         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5309         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5310             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5311             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5312             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5313             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5314         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5315             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5316         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5317         SLIB_INSTALL_LINKS=
5318         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5319         enable dos_paths
5320         enable_weak os2threads
5321         ;;
5322     gnu/kfreebsd)
5323         add_cppflags -D_BSD_SOURCE
5324         ;;
5325     gnu)
5326         ;;
5327     qnx)
5328         add_cppflags -D_QNX_SOURCE
5329         network_extralibs="-lsocket"
5330         ;;
5331     symbian)
5332         SLIBSUF=".dll"
5333         enable dos_paths
5334         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5335         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5336         add_ldflags -Wl,--target1-abs,--no-undefined \
5337                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5338                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5339         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5340                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5341                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5342         ;;
5343     minix)
5344         ;;
5345     none)
5346         ;;
5347     *)
5348         die "Unknown OS '$target_os'."
5349         ;;
5350 esac
5351
5352 # test if creating links works
5353 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5354 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5355 mkdir "$link_dest"
5356 $ln_s "$link_dest" "$link_name"
5357 touch "$link_dest/test_file"
5358 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5359     # create link to source path
5360     [ -e src ] && rm src
5361     $ln_s "$source_path" src
5362     source_link=src
5363 else
5364     # creating directory links doesn't work
5365     # fall back to using the full source path
5366     source_link="$source_path"
5367 fi
5368 # cleanup
5369 rm -r "$link_dest"
5370 rm -r "$link_name"
5371
5372 # determine libc flavour
5373
5374 probe_libc(){
5375     pfx=$1
5376     pfx_no_=${pfx%_}
5377     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5378     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5379         eval ${pfx}libc_type=uclibc
5380         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5381     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5382         eval ${pfx}libc_type=glibc
5383         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5384     # MinGW headers can be installed on Cygwin, so check for newlib first.
5385     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5386         eval ${pfx}libc_type=newlib
5387         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5388     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5389     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5390         eval ${pfx}libc_type=mingw64
5391         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5392             add_compat msvcrt/snprintf.o
5393             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5394         fi
5395         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5396         eval test \$${pfx_no_}cc_type = "gcc" &&
5397             add_${pfx}cppflags -D__printf__=__gnu_printf__
5398         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5399             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5400     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5401          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5402         eval ${pfx}libc_type=mingw32
5403         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5404             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5405             die "ERROR: MinGW32 runtime version must be >= 3.15."
5406         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5407         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5408             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5409         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5410             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5411         eval test \$${pfx_no_}cc_type = "gcc" &&
5412             add_${pfx}cppflags -D__printf__=__gnu_printf__
5413     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5414         eval ${pfx}libc_type=msvcrt
5415         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5416             if [ "$pfx" = host_ ]; then
5417                 add_host_cppflags -Dsnprintf=_snprintf
5418             else
5419                 add_compat strtod.o strtod=avpriv_strtod
5420                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5421                                              _snprintf=avpriv_snprintf  \
5422                                              vsnprintf=avpriv_vsnprintf
5423             fi
5424         fi
5425         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5426         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5427         # 0x601 by default unless something else is set by the user.
5428         # This can easily lead to us detecting functions only present
5429         # in such new versions and producing binaries requiring windows 7.0.
5430         # Therefore explicitly set the default to Vista unless the user has
5431         # set something else on the command line.
5432         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5433         # family. For these cases, configure is free to use any functions
5434         # found in the SDK headers by default. (Alternatively, we could force
5435         # _WIN32_WINNT to 0x0602 in that case.)
5436         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5437             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5438 #ifdef WINAPI_FAMILY
5439 #include <winapifamily.h>
5440 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5441 #error not desktop
5442 #endif
5443 #endif
5444 EOF
5445         if [ "$pfx" = "" ]; then
5446             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5447             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5448         fi
5449     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5450         eval ${pfx}libc_type=klibc
5451     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5452         eval ${pfx}libc_type=bionic
5453     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5454         eval ${pfx}libc_type=solaris
5455         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5456     fi
5457     test_${pfx}cc <<EOF
5458 #include <time.h>
5459 void *v = localtime_r;
5460 EOF
5461 test "$?" != 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
5462 #include <time.h>
5463 void *v = localtime_r;
5464 EOF
5465
5466     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5467 }
5468
5469 probe_libc
5470 probe_libc host_
5471
5472 # hacks for compiler/libc/os combinations
5473
5474 case $libc_type in
5475     bionic)
5476         add_compat strtod.o strtod=avpriv_strtod
5477         ;;
5478 esac
5479
5480 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5481     add_cppflags '-I\$(SRC_PATH)/compat/float'
5482
5483 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5484
5485 set_default libdir
5486 : ${shlibdir_default:="$libdir"}
5487 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5488
5489 set_default $PATHS_LIST
5490 set_default nm
5491
5492 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5493
5494 enable_weak_pic() {
5495     disabled pic && return
5496     enable pic
5497     add_cppflags -DPIC
5498     case "$target_os" in
5499     mingw*|cygwin*|win*)
5500         ;;
5501     *)
5502         add_cflags -fPIC
5503         add_asflags -fPIC
5504         ;;
5505     esac
5506 }
5507
5508 enabled pic && enable_weak_pic
5509
5510 test_cc <<EOF || die "Symbol mangling check failed."
5511 int ff_extern;
5512 EOF
5513 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5514 extern_prefix=${sym%%ff_extern*}
5515
5516 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5517
5518 for restrict_keyword in restrict __restrict__ __restrict ""; do
5519     test_code cc "" "char * $restrict_keyword p" && break
5520 done
5521
5522 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5523
5524 # The global variable ensures the bits appear unchanged in the object file.
5525 test_cc <<EOF || die "endian test failed"
5526 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5527 EOF
5528 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5529
5530 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5531
5532 if ! enabled ppc64 || enabled bigendian; then
5533     disable vsx
5534 fi
5535
5536 check_gas() {
5537     log "check_gas using '$as' as AS"
5538     # :vararg is used on aarch64, arm and ppc altivec
5539     check_as vararg "
5540 .macro m n, y:vararg=0
5541 \n: .int \y
5542 .endm
5543 m x" || return 1
5544     # .altmacro is only used in arm asm
5545     ! enabled arm || check_as gnu_as ".altmacro"
5546 }
5547
5548 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5549     nogas=:
5550     enabled_any arm aarch64 && nogas=die
5551     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5552     as_noop=-v
5553
5554     case $as_type in
5555         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5556         gcc)  gaspp_as_type=gas ;;
5557         *)    gaspp_as_type=$as_type ;;
5558     esac
5559
5560     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5561
5562     test "${as#*gas-preprocessor.pl}" != "$as" ||
5563     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5564         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5565
5566     if ! check_gas ; then
5567         as=${gas:=$as}
5568         check_gas || \
5569             $nogas "GNU assembler not found, install/update gas-preprocessor"
5570     fi
5571
5572     check_as as_func ".func test
5573                       .endfunc"
5574 fi
5575
5576 check_inline_asm inline_asm_labels '"1:\n"'
5577
5578 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5579
5580 if enabled aarch64; then
5581     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5582     # internal assembler in clang 3.3 does not support this instruction
5583     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5584     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5585
5586     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5587
5588 elif enabled alpha; then
5589
5590     check_cflags -mieee
5591
5592 elif enabled arm; then
5593
5594     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5595     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5596 float func(float a, float b){ return a+b; }
5597 EOF
5598     enabled thumb && check_cflags -mthumb || check_cflags -marm
5599
5600     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5601         :
5602     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5603         :
5604     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5605         case "${cross_prefix:-$cc}" in
5606             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5607             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5608 __asm__ (".eabi_attribute 28, 1");
5609 int main(void) { return 0; }
5610 EOF
5611         esac
5612         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5613     fi
5614
5615     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5616     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5617     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5618     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5619     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5620     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5621     enabled setend  && check_insn setend  'setend be'
5622
5623     [ $target_os = linux ] || [ $target_os = android ] ||
5624         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5625             $ARCH_EXT_LIST_ARM
5626
5627     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5628
5629     check_as as_arch_directive ".arch armv7-a"
5630     check_as as_dn_directive   "ra .dn d0.i16"
5631     check_as as_fpu_directive  ".fpu neon"
5632
5633     # llvm's integrated assembler supports .object_arch from llvm 3.5
5634     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5635         check_as as_object_arch ".object_arch armv4"
5636
5637     # MS armasm fails to assemble our PIC constructs
5638     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5639
5640 elif enabled mips; then
5641
5642     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5643     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5644     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5645
5646     # Enable minimum ISA based on selected options
5647     if enabled mips64; then
5648         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5649         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5650         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5651     else
5652         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5653         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5654         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5655         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5656     fi
5657
5658     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5659     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5660     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5661     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5662     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5663
5664     if enabled bigendian && enabled msa; then
5665         disable msa
5666     fi
5667
5668 elif enabled parisc; then
5669
5670     if enabled gcc; then
5671         case $($cc -dumpversion) in
5672             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5673         esac
5674     fi
5675
5676 elif enabled ppc; then
5677
5678     enable local_aligned
5679
5680     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5681     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5682     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5683     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5684
5685     if enabled altivec; then
5686         check_cflags -maltivec -mabi=altivec
5687
5688         # check if our compiler supports Motorola AltiVec C API
5689         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5690                                     vector signed int v2 = (vector signed int) { 1 };
5691                                     v1 = vec_add(v1, v2);"
5692
5693         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5694     fi
5695
5696     if enabled vsx; then
5697         check_cflags -mvsx &&
5698         check_cc vsx altivec.h "int v[4] = { 0 };
5699                                 vector signed int v1 = vec_vsx_ld(0, v);"
5700     fi
5701
5702     if enabled power8; then
5703         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5704     fi
5705
5706 elif enabled x86; then
5707
5708     check_builtin rdtsc    intrin.h   "__rdtsc()"
5709     check_builtin mm_empty mmintrin.h "_mm_empty()"
5710
5711     enable local_aligned
5712
5713     # check whether EBP is available on x86
5714     # As 'i' is stored on the stack, this program will crash
5715     # if the base pointer is used to access it because the
5716     # base pointer is cleared in the inline assembly code.
5717     check_exec_crash <<EOF && enable ebp_available
5718 volatile int i=0;
5719 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5720 return i;
5721 EOF
5722
5723     # check whether EBX is available on x86
5724     check_inline_asm ebx_available '""::"b"(0)' &&
5725         check_inline_asm ebx_available '"":::"%ebx"'
5726
5727     # check whether xmm clobbers are supported
5728     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5729
5730     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5731         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5732
5733     # check whether binutils is new enough to compile SSSE3/MMXEXT
5734     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5735     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5736
5737     probe_x86asm(){
5738         x86asmexe_probe=$1
5739         if test_cmd $x86asmexe_probe -v; then
5740             x86asmexe=$x86asmexe_probe
5741             x86asm_type=nasm
5742             x86asm_debug="-g -F dwarf"
5743             X86ASMDEP=
5744             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5745         elif test_cmd $x86asmexe_probe --version; then
5746             x86asmexe=$x86asmexe_probe
5747             x86asm_type=yasm
5748             x86asm_debug="-g dwarf2"
5749             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5750             X86ASM_DEPFLAGS=
5751         fi
5752         check_x86asm x86asm "movbe ecx, [5]"
5753     }
5754
5755     if ! disabled_any asm mmx x86asm; then
5756         disable x86asm
5757         for program in $x86asmexe nasm yasm; do
5758             probe_x86asm $program && break
5759         done
5760         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5761         X86ASMFLAGS="-f $objformat"
5762         enabled pic               && append X86ASMFLAGS "-DPIC"
5763         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5764         case "$objformat" in
5765             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5766         esac
5767
5768         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5769         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5770         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5771         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5772         check_x86asm cpunop          "CPU amdnop"
5773     fi
5774
5775     case "$cpu" in
5776         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5777             disable fast_clz
5778         ;;
5779     esac
5780
5781 fi
5782
5783 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5784
5785 check_ldflags -Wl,--as-needed
5786 check_ldflags -Wl,-z,noexecstack
5787
5788 if ! disabled network; then
5789     check_func getaddrinfo $network_extralibs
5790     check_func inet_aton $network_extralibs
5791
5792     check_type netdb.h "struct addrinfo"
5793     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5794     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5795     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5796     check_type poll.h "struct pollfd"
5797     check_type netinet/sctp.h "struct sctp_event_subscribe"
5798     check_struct "sys/socket.h" "struct msghdr" msg_flags
5799     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5800     check_type netinet/in.h "struct sockaddr_in6"
5801     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5802     check_type "sys/types.h sys/socket.h" socklen_t
5803
5804     # Prefer arpa/inet.h over winsock2
5805     if check_headers arpa/inet.h ; then
5806         check_func closesocket
5807     elif check_headers winsock2.h ; then
5808         check_func_headers winsock2.h closesocket -lws2 &&
5809             network_extralibs="-lws2" ||
5810         { check_func_headers winsock2.h closesocket -lws2_32 &&
5811             network_extralibs="-lws2_32"; } || disable winsock2_h network
5812         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5813
5814         check_type ws2tcpip.h socklen_t
5815         check_type ws2tcpip.h "struct addrinfo"
5816         check_type ws2tcpip.h "struct group_source_req"
5817         check_type ws2tcpip.h "struct ip_mreq_source"
5818         check_type ws2tcpip.h "struct ipv6_mreq"
5819         check_type winsock2.h "struct pollfd"
5820         check_struct winsock2.h "struct sockaddr" sa_len
5821         check_type ws2tcpip.h "struct sockaddr_in6"
5822         check_type ws2tcpip.h "struct sockaddr_storage"
5823     else
5824         disable network
5825     fi
5826 fi
5827
5828 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5829 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5830 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5831 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5832 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5833 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5834 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5835
5836 case "$custom_allocator" in
5837     jemalloc)
5838         # jemalloc by default does not use a prefix
5839         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5840     ;;
5841     tcmalloc)
5842         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5843         malloc_prefix=tc_
5844     ;;
5845 esac
5846
5847 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5848 check_func  ${malloc_prefix}memalign            && enable memalign
5849 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5850
5851 check_func  access
5852 check_func_headers stdlib.h arc4random
5853 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5854 check_func  fcntl
5855 check_func  fork
5856 check_func  gethrtime
5857 check_func  getopt
5858 check_func  getrusage
5859 check_func  gettimeofday
5860 check_func  isatty
5861 check_func  mkstemp
5862 check_func  mmap
5863 check_func  mprotect
5864 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5865 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5866 check_func  sched_getaffinity
5867 check_func  setrlimit
5868 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5869 check_func  strerror_r
5870 check_func  sysconf
5871 check_func  sysctl
5872 check_func  usleep
5873
5874 check_func_headers conio.h kbhit
5875 check_func_headers io.h setmode
5876 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5877 check_func_headers mach/mach_time.h mach_absolute_time
5878 check_func_headers stdlib.h getenv
5879 check_func_headers sys/stat.h lstat
5880
5881 check_func_headers windows.h GetProcessAffinityMask
5882 check_func_headers windows.h GetProcessTimes
5883 check_func_headers windows.h GetSystemTimeAsFileTime
5884 check_func_headers windows.h LoadLibrary
5885 check_func_headers windows.h MapViewOfFile
5886 check_func_headers windows.h PeekNamedPipe
5887 check_func_headers windows.h SetConsoleTextAttribute
5888 check_func_headers windows.h SetConsoleCtrlHandler
5889 check_func_headers windows.h Sleep
5890 check_func_headers windows.h VirtualAlloc
5891 check_func_headers glob.h glob
5892 enabled xlib &&
5893     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5894
5895 check_headers direct.h
5896 check_headers dirent.h
5897 check_headers dxgidebug.h
5898 check_headers dxva.h
5899 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5900 check_headers io.h
5901 check_headers linux/perf_event.h
5902 check_headers libcrystalhd/libcrystalhd_if.h
5903 check_headers malloc.h
5904 check_headers net/udplite.h
5905 check_headers poll.h
5906 check_headers sys/param.h
5907 check_headers sys/resource.h
5908 check_headers sys/select.h
5909 check_headers sys/time.h
5910 check_headers sys/un.h
5911 check_headers termios.h
5912 check_headers unistd.h
5913 check_headers valgrind/valgrind.h
5914 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5915 check_headers windows.h
5916 check_headers X11/extensions/XvMClib.h
5917 check_headers asm/types.h
5918
5919 # it seems there are versions of clang in some distros that try to use the
5920 # gcc headers, which explodes for stdatomic
5921 # so we also check that atomics actually work here
5922 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5923
5924 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5925 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5926     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5927 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5928 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5929 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5930
5931 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5932 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5933 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5934
5935 enabled appkit       && check_apple_framework AppKit
5936 enabled audiotoolbox && check_apple_framework AudioToolbox
5937 enabled avfoundation && check_apple_framework AVFoundation
5938 enabled coreimage    && check_apple_framework CoreImage
5939 enabled videotoolbox && check_apple_framework VideoToolbox
5940
5941 check_apple_framework CoreFoundation
5942 check_apple_framework CoreMedia
5943 check_apple_framework CoreVideo
5944
5945 enabled avfoundation && {
5946     disable coregraphics applicationservices
5947     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5948     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5949
5950 enabled videotoolbox && {
5951     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5952     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5953 }
5954
5955 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5956
5957 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5958 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5959 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5960 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5961 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5962
5963 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5964 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5965 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5966 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5967 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5968 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5969
5970 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5971
5972 if ! disabled ffnvcodec; then
5973     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5974           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5975       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5976           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5977 fi
5978
5979 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5980
5981 if ! disabled w32threads && ! enabled pthreads; then
5982     check_func_headers "windows.h process.h" _beginthreadex &&
5983         check_type "windows.h" CONDITION_VARIABLE &&
5984         check_type "windows.h" INIT_ONCE &&
5985         enable w32threads || disable w32threads
5986     if ! enabled w32threads && enabled winrt; then
5987         check_func_headers "windows.h" CreateThread &&
5988             enable w32threads || disable w32threads
5989     fi
5990 fi
5991
5992 # check for some common methods of building with pthread support
5993 # do this before the optional library checks as some of them require pthreads
5994 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5995     if check_lib pthreads pthread.h pthread_join   -pthread &&
5996        check_lib pthreads pthread.h pthread_create -pthread; then
5997         add_cflags -pthread
5998     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5999          check_lib pthreads pthread.h pthread_create -pthreads; then
6000         add_cflags -pthreads
6001     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6002          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6003         add_cflags -ldl -pthread
6004     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6005          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6006         :
6007     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6008          check_lib pthreads pthread.h pthread_create -lpthread; then
6009         :
6010     elif check_func pthread_join && check_func pthread_create; then
6011         enable pthreads
6012     fi
6013     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6014
6015     if enabled pthreads; then
6016         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6017         check_func pthread_cancel $pthreads_extralibs
6018     fi
6019 fi
6020
6021 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6022                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6023 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6024 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6025
6026 # On some systems dynamic loading requires no extra linker flags
6027 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6028
6029 check_lib libm math.h sin -lm
6030
6031 atan2f_args=2
6032 copysign_args=2
6033 hypot_args=2
6034 ldexpf_args=2
6035 powf_args=2
6036
6037 for func in $MATH_FUNCS; do
6038     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6039 done
6040
6041 for func in $COMPLEX_FUNCS; do
6042     eval check_complexfunc $func \${${func}_args:-1}
6043 done
6044
6045 # these are off by default, so fail if requested and not available
6046 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6047 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6048 enabled decklink          && { require_headers DeckLinkAPI.h &&
6049                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6050 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6051 enabled frei0r            && require_headers frei0r.h
6052 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6053 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6054 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6055 enabled ladspa            && require_headers ladspa.h
6056 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6057 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6058 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6059 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6060 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6061 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6062 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6063                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6064                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6065 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6066 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6067 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.5.115" davs2.h davs2_decoder_open
6068 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6069 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6070 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6071                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6072                                  warn "using libfdk without pkg-config"; } }
6073 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"
6074 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6075 enabled fontconfig        && enable libfontconfig
6076 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6077 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6078 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6079 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6080                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6081 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6082                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6083                                done || die "ERROR: libgsm not found"; }
6084 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6085 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6086 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6087 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6088 # While it may appear that require is being used as a pkg-config
6089 # fallback for libmfx, it is actually being used to detect a different
6090 # installation route altogether.  If libmfx is installed via the Intel
6091 # Media SDK or Intel Media Server Studio, these don't come with
6092 # pkg-config support.  Instead, users should make sure that the build
6093 # can find the libraries and headers through other means.
6094 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6095                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6096 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6097 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6098 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6099                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6100 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6101                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6102                                die "ERROR: libnpp not found"; }
6103 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6104 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6105 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6106                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6107                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6108                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6109 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6110 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6111                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6112 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6113 enabled libopus           && {
6114     enabled libopus_decoder && {
6115         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6116     }
6117     enabled libopus_encoder && {
6118         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6119     }
6120 }
6121 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6122 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6123 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6124 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6125 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6126 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6127                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6128 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6129 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6130 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6131 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6132 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6133 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6134 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6135 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6136 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6137 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6138                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6139                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6140 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6141 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6142 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6143 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6144 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6145                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6146
6147 enabled libvpx            && {
6148     enabled libvpx_vp8_decoder && {
6149         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6150             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6151                 die "ERROR: libvpx decoder version must be >=1.4.0";
6152     }
6153     enabled libvpx_vp8_encoder && {
6154         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6155             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6156                 die "ERROR: libvpx encoder version must be >=1.4.0";
6157     }
6158     enabled libvpx_vp9_decoder && {
6159         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6160             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6161     }
6162     enabled libvpx_vp9_encoder && {
6163         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6164             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6165     }
6166     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6167         die "libvpx enabled but no supported decoders found"
6168     fi
6169 }
6170
6171 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6172 enabled libwebp           && {
6173     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6174     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6175 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6176                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6177                                  warn "using libx264 without pkg-config"; } } &&
6178                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6179                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6180 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6181                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6182 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6183 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.2.77" "stdint.h xavs2.h" xavs2_api_get
6184 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6185 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6186 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6187 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6188                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6189                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6190 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6191 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6192                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6193                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6194                                die "ERROR: mbedTLS not found"; }
6195 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6196 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6197                                { ! enabled cross_compile &&
6198                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6199                                  add_ldflags -L/opt/vc/lib/ &&
6200                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6201                                die "ERROR: mmal not found" &&
6202                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6203 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6204                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6205                                die "ERROR: openal not found"; } &&
6206                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6207                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6208 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6209                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6210                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6211                                die "ERROR: opencl not found"; } &&
6212                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6213                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6214                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6215 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6216                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6217                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6218                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6219                                die "ERROR: opengl not found."
6220                              }
6221 enabled omx               && require_headers OMX_Core.h
6222 enabled omx_rpi           && { check_headers OMX_Core.h ||
6223                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6224                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6225 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6226                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6227                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6228                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6229                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6230                                die "ERROR: openssl not found"; }
6231 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6232                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6233                                { enabled libdrm ||
6234                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6235                              }
6236 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6237
6238
6239 if enabled gcrypt; then
6240     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6241     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6242         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6243         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6244         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6245             die "ERROR: gcrypt not found"
6246         add_cflags $gcrypt_cflags
6247     else
6248         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6249     fi
6250 fi
6251
6252 if enabled sdl2; then
6253     SDL2_CONFIG="${cross_prefix}sdl2-config"
6254     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6255     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6256         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6257         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6258         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6259         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6260         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6261             enable sdl2
6262     fi
6263     if test $target_os = "mingw32"; then
6264         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6265     fi
6266 fi
6267
6268 if enabled decklink; then
6269     case $target_os in
6270         mingw32*|mingw64*|win32|win64)
6271             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6272             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6273             ;;
6274     esac
6275 fi
6276
6277 enabled securetransport &&
6278     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6279     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6280         disable securetransport
6281
6282 enabled securetransport &&
6283     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6284
6285 enabled schannel &&
6286     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6287     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6288     schannel_extralibs="-lsecur32" ||
6289         disable schannel
6290
6291 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6292 enabled makeinfo \
6293     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6294     && enable makeinfo_html || disable makeinfo_html
6295 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6296 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6297 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6298 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6299
6300 # check V4L2 codecs available in the API
6301 check_headers linux/fb.h
6302 check_headers linux/videodev2.h
6303 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6304 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6305 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6306 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6307 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6308 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6309 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6310 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6311 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6312 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6313 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6314
6315 check_headers sys/videoio.h
6316 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6317
6318 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6319 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6320 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6321 # w32api 3.12 had it defined wrong
6322 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6323
6324 check_type "dshow.h" IBaseFilter
6325
6326 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6327 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6328     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6329     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6330     check_headers "dev/ic/bt8xx.h"
6331
6332 if check_struct sys/soundcard.h audio_buf_info bytes; then
6333     enable_sanitized sys/soundcard.h
6334 else
6335     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6336     #include <sys/soundcard.h>
6337     audio_buf_info abc;
6338 EOF
6339 fi
6340
6341 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6342     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6343
6344 enabled libjack &&
6345     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6346
6347 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6348
6349 if enabled libcdio; then
6350     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6351     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6352     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6353     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6354     die "ERROR: No usable libcdio/cdparanoia found"
6355 fi
6356
6357 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6358     disable libxcb_shm libxcb_shape libxcb_xfixes
6359
6360 if enabled libxcb; then
6361     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6362     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6363     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6364 fi
6365
6366 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6367
6368 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6369 # the desktop api partition
6370 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6371 #ifdef WINAPI_FAMILY
6372 #include <winapifamily.h>
6373 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6374 #error desktop, not uwp
6375 #else
6376 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6377 #endif
6378 #else
6379 #error no family set
6380 #endif
6381 EOF
6382
6383 enabled vaapi &&
6384     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6385
6386 if enabled vaapi; then
6387     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6388
6389     if enabled xlib; then
6390         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6391     fi
6392
6393     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6394 fi
6395
6396 if enabled_all opencl libdrm ; then
6397     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6398         enable opencl_drm_beignet
6399     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6400         enable opencl_drm_arm
6401 fi
6402
6403 if enabled_all opencl vaapi ; then
6404     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6405     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6406         enable opencl_vaapi_intel_media
6407 fi
6408
6409 if enabled_all opencl dxva2 ; then
6410     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6411         enable opencl_dxva2
6412 fi
6413
6414 if enabled_all opencl d3d11va ; then
6415     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6416         enable opencl_d3d11
6417 fi
6418
6419 enabled vdpau &&
6420     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6421
6422 enabled vdpau &&
6423     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6424
6425 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6426
6427 if enabled x86; then
6428     case $target_os in
6429         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6430             ;;
6431         *)
6432             disable ffnvcodec cuvid nvdec nvenc
6433             ;;
6434     esac
6435 else
6436     disable ffnvcodec cuvid nvdec nvenc
6437 fi
6438
6439 enabled ffnvcodec && enable cuda
6440
6441 enabled nvenc &&
6442     test_cc -I$source_path <<EOF || disable nvenc
6443 #include <ffnvcodec/nvEncodeAPI.h>
6444 NV_ENCODE_API_FUNCTION_LIST flist;
6445 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6446 int main(void) { return 0; }
6447 EOF
6448
6449 enabled amf &&
6450     check_cpp_condition amf "AMF/core/Version.h" \
6451         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6452
6453 # Funny iconv installations are not unusual, so check it after all flags have been set
6454 if enabled libc_iconv; then
6455     check_func_headers iconv.h iconv
6456 elif enabled iconv; then
6457     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6458 fi
6459
6460 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6461
6462 # add some useful compiler flags if supported
6463 check_cflags -Wdeclaration-after-statement
6464 check_cflags -Wall
6465 check_cflags -Wdisabled-optimization
6466 check_cflags -Wpointer-arith
6467 check_cflags -Wredundant-decls
6468 check_cflags -Wwrite-strings
6469 check_cflags -Wtype-limits
6470 check_cflags -Wundef
6471 check_cflags -Wmissing-prototypes
6472 check_cflags -Wno-pointer-to-int-cast
6473 check_cflags -Wstrict-prototypes
6474 check_cflags -Wempty-body
6475
6476 if enabled extra_warnings; then
6477     check_cflags -Wcast-qual
6478     check_cflags -Wextra
6479     check_cflags -Wpedantic
6480 fi
6481
6482 check_disable_warning(){
6483     warning_flag=-W${1#-Wno-}
6484     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6485 }
6486
6487 test_cflags -Werror=unused-command-line-argument &&
6488     append unknown_warning_flags "-Werror=unused-command-line-argument"
6489 test_cflags -Werror=unknown-warning-option &&
6490     append unknown_warning_flags "-Werror=unknown-warning-option"
6491
6492 check_disable_warning -Wno-parentheses
6493 check_disable_warning -Wno-switch
6494 check_disable_warning -Wno-format-zero-length
6495 check_disable_warning -Wno-pointer-sign
6496 check_disable_warning -Wno-unused-const-variable
6497 check_disable_warning -Wno-bool-operation
6498
6499 check_disable_warning_headers(){
6500     warning_flag=-W${1#-Wno-}
6501     test_cflags $warning_flag && add_cflags_headers $1
6502 }
6503
6504 check_disable_warning_headers -Wno-deprecated-declarations
6505 check_disable_warning_headers -Wno-unused-variable
6506
6507 test_cc <<EOF && enable blocks_extension
6508 void (^block)(void);
6509 EOF
6510
6511 # add some linker flags
6512 check_ldflags -Wl,--warn-common
6513 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6514 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6515 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6516
6517 # add some strip flags
6518 check_stripflags -x
6519
6520 enabled neon_clobber_test &&
6521     check_ldflags -Wl,--wrap,avcodec_open2              \
6522                   -Wl,--wrap,avcodec_decode_audio4      \
6523                   -Wl,--wrap,avcodec_decode_video2      \
6524                   -Wl,--wrap,avcodec_decode_subtitle2   \
6525                   -Wl,--wrap,avcodec_encode_audio2      \
6526                   -Wl,--wrap,avcodec_encode_video2      \
6527                   -Wl,--wrap,avcodec_encode_subtitle    \
6528                   -Wl,--wrap,avcodec_send_packet        \
6529                   -Wl,--wrap,avcodec_receive_packet     \
6530                   -Wl,--wrap,avcodec_send_frame         \
6531                   -Wl,--wrap,avcodec_receive_frame      \
6532                   -Wl,--wrap,swr_convert                \
6533                   -Wl,--wrap,avresample_convert ||
6534     disable neon_clobber_test
6535
6536 enabled xmm_clobber_test &&
6537     check_ldflags -Wl,--wrap,avcodec_open2              \
6538                   -Wl,--wrap,avcodec_decode_audio4      \
6539                   -Wl,--wrap,avcodec_decode_video2      \
6540                   -Wl,--wrap,avcodec_decode_subtitle2   \
6541                   -Wl,--wrap,avcodec_encode_audio2      \
6542                   -Wl,--wrap,avcodec_encode_video2      \
6543                   -Wl,--wrap,avcodec_encode_subtitle    \
6544                   -Wl,--wrap,avcodec_send_packet        \
6545                   -Wl,--wrap,avcodec_receive_packet     \
6546                   -Wl,--wrap,avcodec_send_frame         \
6547                   -Wl,--wrap,avcodec_receive_frame      \
6548                   -Wl,--wrap,swr_convert                \
6549                   -Wl,--wrap,avresample_convert         \
6550                   -Wl,--wrap,sws_scale ||
6551     disable xmm_clobber_test
6552
6553 check_ld "cc" proper_dce <<EOF
6554 extern const int array[512];
6555 static inline int func(void) { return array[0]; }
6556 int main(void) { return 0; }
6557 EOF
6558
6559 if enabled proper_dce; then
6560     echo "X { local: *; };" > $TMPV
6561     if test_ldflags -Wl,${version_script},$TMPV; then
6562         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6563         quotes='""'
6564         test_cc <<EOF && enable symver_asm_label
6565 void ff_foo(void) __asm__ ("av_foo@VERSION");
6566 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6567 EOF
6568         test_cc <<EOF && enable symver_gnu_asm
6569 __asm__(".symver ff_foo,av_foo@VERSION");
6570 void ff_foo(void) {}
6571 EOF
6572     fi
6573 fi
6574
6575 if [ -z "$optflags" ]; then
6576     if enabled small; then
6577         optflags=$cflags_size
6578     elif enabled optimizations; then
6579         optflags=$cflags_speed
6580     else
6581         optflags=$cflags_noopt
6582     fi
6583 fi
6584
6585 if [ -z "$nvccflags" ]; then
6586     nvccflags=$nvccflags_default
6587 fi
6588
6589 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6590     nvccflags="$nvccflags -m64"
6591 else
6592     nvccflags="$nvccflags -m32"
6593 fi
6594
6595 check_optflags(){
6596     check_cflags "$@"
6597     enabled lto && check_ldflags "$@"
6598 }
6599
6600 check_optflags $optflags
6601 check_optflags -fno-math-errno
6602 check_optflags -fno-signed-zeros
6603
6604 if enabled lto; then
6605     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6606     check_cflags  -flto
6607     check_ldflags -flto $cpuflags
6608     disable inline_asm_direct_symbol_refs
6609 fi
6610
6611 enabled ftrapv && check_cflags -ftrapv
6612
6613 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6614 int x;
6615 EOF
6616
6617
6618 if enabled icc; then
6619     # Just warnings, no remarks
6620     check_cflags -w1
6621     # -wd: Disable following warnings
6622     # 144, 167, 556: -Wno-pointer-sign
6623     # 188: enumerated type mixed with another type
6624     # 1292: attribute "foo" ignored
6625     # 1419: external declaration in primary source file
6626     # 10006: ignoring unknown option -fno-signed-zeros
6627     # 10148: ignoring unknown option -Wno-parentheses
6628     # 10156: ignoring option '-W'; no argument required
6629     # 13200: No EMMS instruction before call to function
6630     # 13203: No EMMS instruction before return from function
6631     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6632     # 11030: Warning unknown option --as-needed
6633     # 10156: ignoring option '-export'; no argument required
6634     check_ldflags -wd10156,11030
6635     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6636     enable ebp_available
6637     # The test above does not test linking
6638     enabled lto && disable symver_asm_label
6639     if enabled x86_32; then
6640         icc_version=$($cc -dumpversion)
6641         test ${icc_version%%.*} -ge 11 &&
6642             check_cflags -falign-stack=maintain-16-byte ||
6643             disable aligned_stack
6644     fi
6645 elif enabled gcc; then
6646     check_optflags -fno-tree-vectorize
6647     check_cflags -Werror=format-security
6648     check_cflags -Werror=implicit-function-declaration
6649     check_cflags -Werror=missing-prototypes
6650     check_cflags -Werror=return-type
6651     check_cflags -Werror=vla
6652     check_cflags -Wformat
6653     check_cflags -fdiagnostics-color=auto
6654     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6655     if enabled x86_32; then
6656         case $target_os in
6657         *bsd*)
6658             # BSDs don't guarantee a 16 byte aligned stack, but we can
6659             # request GCC to try to maintain 16 byte alignment throughout
6660             # function calls. Library entry points that might call assembly
6661             # functions align the stack. (The parameter means 2^4 bytes.)
6662             check_cflags -mpreferred-stack-boundary=4
6663             ;;
6664         esac
6665     fi
6666 elif enabled llvm_gcc; then
6667     check_cflags -mllvm -stack-alignment=16
6668 elif enabled clang; then
6669     if enabled x86_32; then
6670         # Clang doesn't support maintaining alignment without assuming the
6671         # same alignment in every function. If 16 byte alignment would be
6672         # enabled, one would also have to either add attribute_align_arg on
6673         # every single entry point into the libraries or enable -mstackrealign
6674         # (doing stack realignment in every single function).
6675         case $target_os in
6676         mingw32|win32|*bsd*)
6677             disable aligned_stack
6678             ;;
6679         *)
6680             check_cflags -mllvm -stack-alignment=16
6681             check_cflags -mstack-alignment=16
6682             ;;
6683         esac
6684     else
6685         check_cflags -mllvm -stack-alignment=16
6686         check_cflags -mstack-alignment=16
6687     fi
6688     check_cflags -Qunused-arguments
6689     check_cflags -Werror=implicit-function-declaration
6690     check_cflags -Werror=missing-prototypes
6691     check_cflags -Werror=return-type
6692 elif enabled cparser; then
6693     add_cflags -Wno-missing-variable-declarations
6694     add_cflags -Wno-empty-statement
6695 elif enabled armcc; then
6696     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6697     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6698     # 2523: use of inline assembly is deprecated
6699     add_cflags -W${armcc_opt},--diag_suppress=2523
6700     add_cflags -W${armcc_opt},--diag_suppress=1207
6701     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6702     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6703     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6704     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6705 elif enabled pathscale; then
6706     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6707     disable inline_asm
6708 elif enabled_any msvc icl; then
6709     enabled x86_32 && disable aligned_stack
6710     enabled_all x86_32 debug && add_cflags -Oy-
6711     enabled debug && add_ldflags -debug
6712     enable pragma_deprecated
6713     if enabled icl; then
6714         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6715         # (correctly) on icl 13.x.
6716         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6717             add_cflags -Qansi-alias
6718         # Some inline asm is not compilable in debug
6719         if enabled debug; then
6720             disable ebp_available
6721             disable ebx_available
6722         fi
6723     fi
6724     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6725     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6726     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6727     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6728     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6729     # MSVC 2013 and newer can handle it fine.
6730     # If this declspec fails, force including stdlib.h before the restrict redefinition
6731     # happens in config.h.
6732     if [ $restrict_keyword != restrict ]; then
6733         test_cc <<EOF || add_cflags -FIstdlib.h
6734 __declspec($restrict_keyword) void *foo(int);
6735 EOF
6736     fi
6737     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6738     # Issue has been fixed in MSVC v19.00.24218.
6739     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6740         check_cflags -d2SSAOptimizer-
6741     # enable utf-8 source processing on VS2015 U2 and newer
6742     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6743         add_cflags -utf-8
6744 fi
6745
6746 for pfx in "" host_; do
6747     varname=${pfx%_}cc_type
6748     eval "type=\$$varname"
6749     if [ "$type" = "msvc" ]; then
6750         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6751 static inline int foo(int a) { return a; }
6752 EOF
6753     fi
6754 done
6755
6756 case $as_type in
6757     clang)
6758         add_asflags -Qunused-arguments
6759     ;;
6760 esac
6761
6762 case $ld_type in
6763     clang)
6764         check_ldflags -Qunused-arguments
6765     ;;
6766 esac
6767
6768 enable frame_thread_encoder
6769
6770 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6771
6772 check_deps $CONFIG_LIST       \
6773            $CONFIG_EXTRA      \
6774            $HAVE_LIST         \
6775            $ALL_COMPONENTS    \
6776
6777 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"
6778 enabled avresample && warn "Building with deprecated library libavresample"
6779
6780 if test $target_os = "haiku"; then
6781     disable memalign
6782     disable posix_memalign
6783 fi
6784
6785 flatten_extralibs(){
6786     nested_entries=
6787     list_name=$1
6788     eval list=\$${1}
6789     for entry in $list; do
6790         entry_copy=$entry
6791         resolve entry_copy
6792         flat_entries=
6793         for e in $entry_copy; do
6794             case $e in
6795                 *_extralibs) nested_entries="$nested_entries$e ";;
6796                           *) flat_entries="$flat_entries$e ";;
6797             esac
6798         done
6799         eval $entry="\$flat_entries"
6800     done
6801     append $list_name "$nested_entries"
6802
6803     resolve nested_entries
6804     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6805         flatten_extralibs $list_name
6806     fi
6807 }
6808
6809 flatten_extralibs_wrapper(){
6810     list_name=$1
6811     flatten_extralibs $list_name
6812     unique $list_name
6813     resolve $list_name
6814     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6815     eval printf \''%s'\' \""\$$list_name"\"
6816 }
6817
6818 for linkunit in $LIBRARY_LIST; do
6819     unset current_extralibs
6820     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6821     for comp in ${components}; do
6822         enabled $comp || continue
6823         comp_extralibs="${comp}_extralibs"
6824         append current_extralibs $comp_extralibs
6825     done
6826     eval prepend ${linkunit}_extralibs $current_extralibs
6827 done
6828
6829 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6830     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6831 done
6832
6833 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6834
6835 for thread in $THREADS_LIST; do
6836     if enabled $thread; then
6837         test -n "$thread_type" &&
6838             die "ERROR: Only one thread type must be selected." ||
6839             thread_type="$thread"
6840     fi
6841 done
6842
6843 if disabled stdatomic; then
6844     if enabled atomics_gcc; then
6845         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6846     elif enabled atomics_win32; then
6847         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6848     elif enabled atomics_suncc; then
6849         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6850     elif enabled pthreads; then
6851         add_compat atomics/pthread/stdatomic.o
6852         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6853     else
6854         enabled threads && die "Threading is enabled, but no atomics are available"
6855         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6856     fi
6857 fi
6858
6859 # Check if requested libraries were found.
6860 for lib in $AUTODETECT_LIBS; do
6861     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6862 done
6863
6864 enabled zlib && add_cppflags -DZLIB_CONST
6865
6866 # conditional library dependencies, in any order
6867 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6868 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6869 enabled afir_filter         && prepend avfilter_deps "avcodec"
6870 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6871 enabled aresample_filter    && prepend avfilter_deps "swresample"
6872 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6873 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6874 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6875 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6876 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6877 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6878 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6879 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6880 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6881 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6882 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6883 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6884 enabled pan_filter          && prepend avfilter_deps "swresample"
6885 enabled pp_filter           && prepend avfilter_deps "postproc"
6886 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6887 enabled resample_filter && prepend avfilter_deps "avresample"
6888 enabled sab_filter          && prepend avfilter_deps "swscale"
6889 enabled scale_filter    && prepend avfilter_deps "swscale"
6890 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6891 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6892 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6893 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6894 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6895 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6896 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6897 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6898 enabled spp_filter          && prepend avfilter_deps "avcodec"
6899 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6900 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6901 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6902 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6903
6904 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6905
6906 #FIXME
6907 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6908     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6909
6910 enabled opus_decoder    && prepend avcodec_deps "swresample"
6911
6912 # reorder the items at var $1 to align with the items order at var $2 .
6913 # die if an item at $1 is not at $2 .
6914 reorder_by(){
6915     eval rb_in=\$$1
6916     eval rb_ordered=\$$2
6917
6918     for rb in $rb_in; do
6919         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6920     done
6921
6922     rb_out=
6923     for rb in $rb_ordered; do
6924         is_in $rb $rb_in && rb_out="$rb_out$rb "
6925     done
6926     eval $1=\$rb_out
6927 }
6928
6929 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6930 # within a set of N items, N expansions are enough to expose a cycle.
6931 expand_deps(){
6932     unique ${1}_deps  # required for the early break test.
6933     for dummy in $LIBRARY_LIST; do  # N iteratios
6934         eval deps=\$${1}_deps
6935         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6936         unique ${1}_deps
6937         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6938     done
6939
6940     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6941     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6942 }
6943
6944 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6945 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6946
6947 map 'expand_deps $v' $LIBRARY_LIST
6948
6949 if test "$quiet" != "yes"; then
6950
6951 echo "install prefix            $prefix"
6952 echo "source path               $source_path"
6953 echo "C compiler                $cc"
6954 echo "C library                 $libc_type"
6955 if test "$host_cc" != "$cc"; then
6956     echo "host C compiler           $host_cc"
6957     echo "host C library            $host_libc_type"
6958 fi
6959 echo "ARCH                      $arch ($cpu)"
6960 if test "$build_suffix" != ""; then
6961     echo "build suffix              $build_suffix"
6962 fi
6963 if test "$progs_suffix" != ""; then
6964     echo "progs suffix              $progs_suffix"
6965 fi
6966 if test "$extra_version" != ""; then
6967     echo "version string suffix     $extra_version"
6968 fi
6969 echo "big-endian                ${bigendian-no}"
6970 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6971 if enabled x86; then
6972     echo "standalone assembly       ${x86asm-no}"
6973     echo "x86 assembler             ${x86asmexe}"
6974     echo "MMX enabled               ${mmx-no}"
6975     echo "MMXEXT enabled            ${mmxext-no}"
6976     echo "3DNow! enabled            ${amd3dnow-no}"
6977     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6978     echo "SSE enabled               ${sse-no}"
6979     echo "SSSE3 enabled             ${ssse3-no}"
6980     echo "AESNI enabled             ${aesni-no}"
6981     echo "AVX enabled               ${avx-no}"
6982     echo "AVX2 enabled              ${avx2-no}"
6983     echo "AVX-512 enabled           ${avx512-no}"
6984     echo "XOP enabled               ${xop-no}"
6985     echo "FMA3 enabled              ${fma3-no}"
6986     echo "FMA4 enabled              ${fma4-no}"
6987     echo "i686 features enabled     ${i686-no}"
6988     echo "CMOV is fast              ${fast_cmov-no}"
6989     echo "EBX available             ${ebx_available-no}"
6990     echo "EBP available             ${ebp_available-no}"
6991 fi
6992 if enabled aarch64; then
6993     echo "NEON enabled              ${neon-no}"
6994     echo "VFP enabled               ${vfp-no}"
6995 fi
6996 if enabled arm; then
6997     echo "ARMv5TE enabled           ${armv5te-no}"
6998     echo "ARMv6 enabled             ${armv6-no}"
6999     echo "ARMv6T2 enabled           ${armv6t2-no}"
7000     echo "VFP enabled               ${vfp-no}"
7001     echo "NEON enabled              ${neon-no}"
7002     echo "THUMB enabled             ${thumb-no}"
7003 fi
7004 if enabled mips; then
7005     echo "MIPS FPU enabled          ${mipsfpu-no}"
7006     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7007     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7008     echo "MIPS MSA enabled          ${msa-no}"
7009     echo "LOONGSON MMI enabled      ${mmi-no}"
7010 fi
7011 if enabled ppc; then
7012     echo "AltiVec enabled           ${altivec-no}"
7013     echo "VSX enabled               ${vsx-no}"
7014     echo "POWER8 enabled            ${power8-no}"
7015     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7016     echo "dcbzl available           ${dcbzl-no}"
7017 fi
7018 echo "debug symbols             ${debug-no}"
7019 echo "strip symbols             ${stripping-no}"
7020 echo "optimize for size         ${small-no}"
7021 echo "optimizations             ${optimizations-no}"
7022 echo "static                    ${static-no}"
7023 echo "shared                    ${shared-no}"
7024 echo "postprocessing support    ${postproc-no}"
7025 echo "network support           ${network-no}"
7026 echo "threading support         ${thread_type-no}"
7027 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7028 echo "texi2html enabled         ${texi2html-no}"
7029 echo "perl enabled              ${perl-no}"
7030 echo "pod2man enabled           ${pod2man-no}"
7031 echo "makeinfo enabled          ${makeinfo-no}"
7032 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7033 test -n "$random_seed" &&
7034     echo "random seed               ${random_seed}"
7035 echo
7036
7037 echo "External libraries:"
7038 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7039 echo
7040
7041 echo "External libraries providing hardware acceleration:"
7042 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7043 echo
7044
7045 echo "Libraries:"
7046 print_enabled '' $LIBRARY_LIST | print_in_columns
7047 echo
7048
7049 echo "Programs:"
7050 print_enabled '' $PROGRAM_LIST | print_in_columns
7051 echo
7052
7053 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7054     echo "Enabled ${type}s:"
7055     eval list=\$$(toupper $type)_LIST
7056     print_enabled '_*' $list | print_in_columns
7057     echo
7058 done
7059
7060 if test -n "$ignore_tests"; then
7061     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7062     echo "Ignored FATE tests:"
7063     echo $ignore_tests | print_in_columns
7064     echo
7065 fi
7066
7067 echo "License: $license"
7068
7069 fi # test "$quiet" != "yes"
7070
7071 if test -n "$WARNINGS"; then
7072     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7073     enabled fatal_warnings && exit 1
7074 fi
7075
7076 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7077
7078 esc(){
7079     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7080 }
7081
7082 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7083
7084 enabled stripping || strip="echo skipping strip"
7085 enabled stripping || striptype=""
7086
7087 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7088
7089 cat > ffbuild/config.mak <<EOF
7090 # Automatically generated by configure - do not modify!
7091 ifndef FFMPEG_CONFIG_MAK
7092 FFMPEG_CONFIG_MAK=1
7093 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7094 prefix=$prefix
7095 LIBDIR=\$(DESTDIR)$libdir
7096 SHLIBDIR=\$(DESTDIR)$shlibdir
7097 INCDIR=\$(DESTDIR)$incdir
7098 BINDIR=\$(DESTDIR)$bindir
7099 DATADIR=\$(DESTDIR)$datadir
7100 DOCDIR=\$(DESTDIR)$docdir
7101 MANDIR=\$(DESTDIR)$mandir
7102 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7103 INSTALL_NAME_DIR=$install_name_dir
7104 SRC_PATH=$source_path
7105 SRC_LINK=$source_link
7106 ifndef MAIN_MAKEFILE
7107 SRC_PATH:=\$(SRC_PATH:.%=..%)
7108 endif
7109 CC_IDENT=$cc_ident
7110 ARCH=$arch
7111 INTRINSICS=$intrinsics
7112 EXTERN_PREFIX=$extern_prefix
7113 CC=$cc
7114 CXX=$cxx
7115 AS=$as
7116 OBJCC=$objcc
7117 LD=$ld
7118 DEPCC=$dep_cc
7119 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7120 DEPAS=$as
7121 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7122 X86ASM=$x86asmexe
7123 DEPX86ASM=$x86asmexe
7124 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7125 AR=$ar
7126 ARFLAGS=$arflags
7127 AR_O=$ar_o
7128 AR_CMD=$ar
7129 NM_CMD=$nm
7130 RANLIB=$ranlib
7131 STRIP=$strip
7132 STRIPTYPE=$striptype
7133 NVCC=$nvcc
7134 CP=cp -p
7135 LN_S=$ln_s
7136 CPPFLAGS=$CPPFLAGS
7137 CFLAGS=$CFLAGS
7138 CXXFLAGS=$CXXFLAGS
7139 OBJCFLAGS=$OBJCFLAGS
7140 ASFLAGS=$ASFLAGS
7141 NVCCFLAGS=$nvccflags
7142 AS_C=$AS_C
7143 AS_O=$AS_O
7144 OBJCC_C=$OBJCC_C
7145 OBJCC_E=$OBJCC_E
7146 OBJCC_O=$OBJCC_O
7147 CC_C=$CC_C
7148 CC_E=$CC_E
7149 CC_O=$CC_O
7150 CXX_C=$CXX_C
7151 CXX_O=$CXX_O
7152 NVCC_C=$NVCC_C
7153 NVCC_O=$NVCC_O
7154 LD_O=$LD_O
7155 X86ASM_O=$X86ASM_O
7156 LD_LIB=$LD_LIB
7157 LD_PATH=$LD_PATH
7158 DLLTOOL=$dlltool
7159 WINDRES=$windres
7160 DEPWINDRES=$dep_cc
7161 DOXYGEN=$doxygen
7162 LDFLAGS=$LDFLAGS
7163 LDEXEFLAGS=$LDEXEFLAGS
7164 LDSOFLAGS=$LDSOFLAGS
7165 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7166 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7167 X86ASMFLAGS=$X86ASMFLAGS
7168 BUILDSUF=$build_suffix
7169 PROGSSUF=$progs_suffix
7170 FULLNAME=$FULLNAME
7171 LIBPREF=$LIBPREF
7172 LIBSUF=$LIBSUF
7173 LIBNAME=$LIBNAME
7174 SLIBPREF=$SLIBPREF
7175 SLIBSUF=$SLIBSUF
7176 EXESUF=$EXESUF
7177 EXTRA_VERSION=$extra_version
7178 CCDEP=$CCDEP
7179 CXXDEP=$CXXDEP
7180 CCDEP_FLAGS=$CCDEP_FLAGS
7181 ASDEP=$ASDEP
7182 ASDEP_FLAGS=$ASDEP_FLAGS
7183 X86ASMDEP=$X86ASMDEP
7184 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7185 CC_DEPFLAGS=$CC_DEPFLAGS
7186 AS_DEPFLAGS=$AS_DEPFLAGS
7187 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7188 HOSTCC=$host_cc
7189 HOSTLD=$host_ld
7190 HOSTCFLAGS=$host_cflags
7191 HOSTCPPFLAGS=$host_cppflags
7192 HOSTEXESUF=$HOSTEXESUF
7193 HOSTLDFLAGS=$host_ldflags
7194 HOSTEXTRALIBS=$host_extralibs
7195 DEPHOSTCC=$host_cc
7196 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7197 HOSTCCDEP=$HOSTCCDEP
7198 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7199 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7200 HOSTCC_C=$HOSTCC_C
7201 HOSTCC_O=$HOSTCC_O
7202 HOSTLD_O=$HOSTLD_O
7203 TARGET_EXEC=$target_exec $target_exec_args
7204 TARGET_PATH=$target_path
7205 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7206 CFLAGS-ffplay=${sdl2_cflags}
7207 CFLAGS_HEADERS=$CFLAGS_HEADERS
7208 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7209 EXTRALIBS=$extralibs
7210 COMPAT_OBJS=$compat_objs
7211 INSTALL=$install
7212 LIBTARGET=${LIBTARGET}
7213 SLIBNAME=${SLIBNAME}
7214 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7215 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7216 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7217 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7218 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7219 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7220 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7221 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7222 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7223 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7224 NOREDZONE_FLAGS=$noredzone_flags
7225 LIBFUZZER_PATH=$libfuzzer_path
7226 IGNORE_TESTS=$ignore_tests
7227 EOF
7228
7229 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7230
7231 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7232     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7233 done
7234
7235 cat > $TMPH <<EOF
7236 /* Automatically generated by configure - do not modify! */
7237 #ifndef FFMPEG_CONFIG_H
7238 #define FFMPEG_CONFIG_H
7239 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7240 #define FFMPEG_LICENSE "$(c_escape $license)"
7241 #define CONFIG_THIS_YEAR 2018
7242 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7243 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7244 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7245 #define av_restrict $restrict_keyword
7246 #define EXTERN_PREFIX "${extern_prefix}"
7247 #define EXTERN_ASM ${extern_prefix}
7248 #define BUILDSUF "$build_suffix"
7249 #define SLIBSUF "$SLIBSUF"
7250 #define HAVE_MMX2 HAVE_MMXEXT
7251 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7252 EOF
7253
7254 test -n "$assert_level" &&
7255     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7256
7257 test -n "$malloc_prefix" &&
7258     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7259
7260 if enabled x86asm; then
7261     append config_files $TMPASM
7262     cat > $TMPASM <<EOF
7263 ; Automatically generated by configure - do not modify!
7264 EOF
7265 fi
7266
7267 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7268
7269
7270 mkdir -p doc
7271 mkdir -p tests
7272 mkdir -p tests/api
7273 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7274
7275 print_config ARCH_   "$config_files" $ARCH_LIST
7276 print_config HAVE_   "$config_files" $HAVE_LIST
7277 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7278                                      $CONFIG_EXTRA      \
7279                                      $ALL_COMPONENTS    \
7280
7281 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7282 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7283
7284 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7285 cp_if_changed $TMPH config.h
7286 touch ffbuild/.config
7287
7288 enabled x86asm && cp_if_changed $TMPASM config.asm
7289
7290 cat > $TMPH <<EOF
7291 /* Generated by ffmpeg configure */
7292 #ifndef AVUTIL_AVCONFIG_H
7293 #define AVUTIL_AVCONFIG_H
7294 EOF
7295
7296 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7297
7298 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7299
7300 cp_if_changed $TMPH libavutil/avconfig.h
7301
7302 # full_filter_name_foo=vf_foo
7303 # full_filter_name_bar=asrc_bar
7304 # ...
7305 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7306
7307 # generate the lists of enabled components
7308 print_enabled_components(){
7309     file=$1
7310     struct_name=$2
7311     name=$3
7312     shift 3
7313     echo "static const $struct_name * const $name[] = {" > $TMPH
7314     for c in $*; do
7315         if enabled $c; then
7316             case $name in
7317                 filter_list)
7318                     eval c=\$full_filter_name_${c%_filter}
7319                 ;;
7320                 indev_list)
7321                     c=${c%_indev}_demuxer
7322                 ;;
7323                 outdev_list)
7324                     c=${c%_outdev}_muxer
7325                 ;;
7326             esac
7327             printf "    &ff_%s,\n" $c >> $TMPH
7328         fi
7329     done
7330     if [ "$name" = "filter_list" ]; then
7331         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7332             printf "    &ff_%s,\n" $c >> $TMPH
7333         done
7334     fi
7335     echo "    NULL };" >> $TMPH
7336     cp_if_changed $TMPH $file
7337 }
7338
7339 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7340 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7341 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7342 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7343 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7344 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7345 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7346 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7347 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7348
7349 # Settings for pkg-config files
7350
7351 cat > $TMPH <<EOF
7352 # Automatically generated by configure - do not modify!
7353 shared=$shared
7354 build_suffix=$build_suffix
7355 prefix=$prefix
7356 libdir=$libdir
7357 incdir=$incdir
7358 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7359 source_path=${source_path}
7360 LIBPREF=${LIBPREF}
7361 LIBSUF=${LIBSUF}
7362 extralibs_avutil="$avutil_extralibs"
7363 extralibs_avcodec="$avcodec_extralibs"
7364 extralibs_avformat="$avformat_extralibs"
7365 extralibs_avdevice="$avdevice_extralibs"
7366 extralibs_avfilter="$avfilter_extralibs"
7367 extralibs_avresample="$avresample_extralibs"
7368 extralibs_postproc="$postproc_extralibs"
7369 extralibs_swscale="$swscale_extralibs"
7370 extralibs_swresample="$swresample_extralibs"
7371 EOF
7372
7373 for lib in $LIBRARY_LIST; do
7374     lib_deps="$(eval echo \$${lib}_deps)"
7375     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7376 done
7377
7378 cp_if_changed $TMPH ffbuild/config.sh