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_h264
2275     cbs_h265
2276     cbs_jpeg
2277     cbs_mpeg2
2278     cbs_vp9
2279     dirac_parse
2280     dnn
2281     dvprofile
2282     exif
2283     faandct
2284     faanidct
2285     fdctdsp
2286     flacdsp
2287     fmtconvert
2288     frame_thread_encoder
2289     g722dsp
2290     golomb
2291     gplv3
2292     h263dsp
2293     h264chroma
2294     h264dsp
2295     h264parse
2296     h264pred
2297     h264qpel
2298     hevcparse
2299     hpeldsp
2300     huffman
2301     huffyuvdsp
2302     huffyuvencdsp
2303     idctdsp
2304     iirfilter
2305     mdct15
2306     intrax8
2307     iso_media
2308     ividsp
2309     jpegtables
2310     lgplv3
2311     libx262
2312     llauddsp
2313     llviddsp
2314     llvidencdsp
2315     lpc
2316     lzf
2317     me_cmp
2318     mpeg_er
2319     mpegaudio
2320     mpegaudiodsp
2321     mpegaudioheader
2322     mpegvideo
2323     mpegvideoenc
2324     mss34dsp
2325     pixblockdsp
2326     qpeldsp
2327     qsv
2328     qsvdec
2329     qsvenc
2330     qsvvpp
2331     rangecoder
2332     riffdec
2333     riffenc
2334     rtpdec
2335     rtpenc_chain
2336     rv34dsp
2337     sinewin
2338     snappy
2339     srtp
2340     startcode
2341     texturedsp
2342     texturedspenc
2343     tpeldsp
2344     vaapi_1
2345     vaapi_encode
2346     vc1dsp
2347     videodsp
2348     vp3dsp
2349     vp56dsp
2350     vp8dsp
2351     wma_freqs
2352     wmv2dsp
2353 "
2354
2355 CMDLINE_SELECT="
2356     $ARCH_EXT_LIST
2357     $CONFIG_LIST
2358     $HAVE_LIST_CMDLINE
2359     $THREADS_LIST
2360     asm
2361     cross_compile
2362     debug
2363     extra_warnings
2364     logging
2365     lto
2366     optimizations
2367     rpath
2368     stripping
2369 "
2370
2371 PATHS_LIST="
2372     bindir
2373     datadir
2374     docdir
2375     incdir
2376     libdir
2377     mandir
2378     pkgconfigdir
2379     prefix
2380     shlibdir
2381     install_name_dir
2382 "
2383
2384 CMDLINE_SET="
2385     $PATHS_LIST
2386     ar
2387     arch
2388     as
2389     assert_level
2390     build_suffix
2391     cc
2392     objcc
2393     cpu
2394     cross_prefix
2395     custom_allocator
2396     cxx
2397     dep_cc
2398     doxygen
2399     env
2400     extra_version
2401     gas
2402     host_cc
2403     host_cflags
2404     host_extralibs
2405     host_ld
2406     host_ldflags
2407     host_os
2408     ignore_tests
2409     install
2410     ld
2411     ln_s
2412     logfile
2413     malloc_prefix
2414     nm
2415     optflags
2416     nvcc
2417     nvccflags
2418     pkg_config
2419     pkg_config_flags
2420     progs_suffix
2421     random_seed
2422     ranlib
2423     samples
2424     strip
2425     sws_max_filter_size
2426     sysinclude
2427     sysroot
2428     target_exec
2429     target_os
2430     target_path
2431     target_samples
2432     tempprefix
2433     toolchain
2434     valgrind
2435     x86asmexe
2436 "
2437
2438 CMDLINE_APPEND="
2439     extra_cflags
2440     extra_cxxflags
2441     extra_objcflags
2442     host_cppflags
2443 "
2444
2445 # code dependency declarations
2446
2447 # architecture extensions
2448
2449 armv5te_deps="arm"
2450 armv6_deps="arm"
2451 armv6t2_deps="arm"
2452 armv8_deps="aarch64"
2453 neon_deps_any="aarch64 arm"
2454 intrinsics_neon_deps="neon"
2455 vfp_deps_any="aarch64 arm"
2456 vfpv3_deps="vfp"
2457 setend_deps="arm"
2458
2459 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2460
2461 altivec_deps="ppc"
2462 dcbzl_deps="ppc"
2463 ldbrx_deps="ppc"
2464 ppc4xx_deps="ppc"
2465 vsx_deps="altivec"
2466 power8_deps="vsx"
2467
2468 loongson2_deps="mips"
2469 loongson3_deps="mips"
2470 mips32r2_deps="mips"
2471 mips32r5_deps="mips"
2472 mips32r6_deps="mips"
2473 mips64r2_deps="mips"
2474 mips64r6_deps="mips"
2475 mipsfpu_deps="mips"
2476 mipsdsp_deps="mips"
2477 mipsdspr2_deps="mips"
2478 mmi_deps="mips"
2479 msa_deps="mipsfpu"
2480
2481 cpunop_deps="i686"
2482 x86_64_select="i686"
2483 x86_64_suggest="fast_cmov"
2484
2485 amd3dnow_deps="mmx"
2486 amd3dnowext_deps="amd3dnow"
2487 i686_deps="x86"
2488 mmx_deps="x86"
2489 mmxext_deps="mmx"
2490 sse_deps="mmxext"
2491 sse2_deps="sse"
2492 sse3_deps="sse2"
2493 ssse3_deps="sse3"
2494 sse4_deps="ssse3"
2495 sse42_deps="sse4"
2496 aesni_deps="sse42"
2497 avx_deps="sse42"
2498 xop_deps="avx"
2499 fma3_deps="avx"
2500 fma4_deps="avx"
2501 avx2_deps="avx"
2502 avx512_deps="avx2"
2503
2504 mmx_external_deps="x86asm"
2505 mmx_inline_deps="inline_asm x86"
2506 mmx_suggest="mmx_external mmx_inline"
2507
2508 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2509     eval dep=\$${ext}_deps
2510     eval ${ext}_external_deps='"${dep}_external"'
2511     eval ${ext}_inline_deps='"${dep}_inline"'
2512     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2513 done
2514
2515 aligned_stack_if_any="aarch64 ppc x86"
2516 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2517 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2518 fast_unaligned_if_any="aarch64 ppc x86"
2519 simd_align_16_if_any="altivec neon sse"
2520 simd_align_32_if_any="avx"
2521 simd_align_64_if_any="avx512"
2522
2523 # system capabilities
2524 linux_perf_deps="linux_perf_event_h"
2525 symver_if_any="symver_asm_label symver_gnu_asm"
2526 valgrind_backtrace_conflict="optimizations"
2527 valgrind_backtrace_deps="valgrind_valgrind_h"
2528
2529 # threading support
2530 atomics_gcc_if="sync_val_compare_and_swap"
2531 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2532 atomics_win32_if="MemoryBarrier"
2533 atomics_native_if_any="$ATOMICS_LIST"
2534 w32threads_deps="atomics_native"
2535 threads_if_any="$THREADS_LIST"
2536
2537 # subsystems
2538 cbs_h264_select="cbs golomb"
2539 cbs_h265_select="cbs golomb"
2540 cbs_jpeg_select="cbs"
2541 cbs_mpeg2_select="cbs"
2542 cbs_vp9_select="cbs"
2543 dct_select="rdft"
2544 dirac_parse_select="golomb"
2545 dnn_suggest="libtensorflow"
2546 error_resilience_select="me_cmp"
2547 faandct_deps="faan"
2548 faandct_select="fdctdsp"
2549 faanidct_deps="faan"
2550 faanidct_select="idctdsp"
2551 h264dsp_select="startcode"
2552 hevcparse_select="golomb"
2553 frame_thread_encoder_deps="encoders threads"
2554 intrax8_select="blockdsp idctdsp"
2555 mdct_select="fft"
2556 mdct15_select="fft"
2557 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2558 mpeg_er_select="error_resilience"
2559 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2560 mpegaudiodsp_select="dct"
2561 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2562 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2563 vc1dsp_select="h264chroma qpeldsp startcode"
2564 rdft_select="fft"
2565
2566 # decoders / encoders
2567 aac_decoder_select="adts_header mdct15 mdct sinewin"
2568 aac_fixed_decoder_select="adts_header mdct sinewin"
2569 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2570 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2571 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2572 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2573 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2574 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2575 adpcm_g722_decoder_select="g722dsp"
2576 adpcm_g722_encoder_select="g722dsp"
2577 aic_decoder_select="golomb idctdsp"
2578 alac_encoder_select="lpc"
2579 als_decoder_select="bswapdsp"
2580 amrnb_decoder_select="lsp"
2581 amrwb_decoder_select="lsp"
2582 amv_decoder_select="sp5x_decoder exif"
2583 amv_encoder_select="jpegtables mpegvideoenc"
2584 ape_decoder_select="bswapdsp llauddsp"
2585 apng_decoder_deps="zlib"
2586 apng_encoder_deps="zlib"
2587 apng_encoder_select="llvidencdsp"
2588 aptx_decoder_select="audio_frame_queue"
2589 aptx_encoder_select="audio_frame_queue"
2590 aptx_hd_decoder_select="audio_frame_queue"
2591 aptx_hd_encoder_select="audio_frame_queue"
2592 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2593 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2594 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2595 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2596 atrac1_decoder_select="mdct sinewin"
2597 atrac3_decoder_select="mdct"
2598 atrac3p_decoder_select="mdct sinewin"
2599 atrac9_decoder_select="mdct"
2600 avrn_decoder_select="exif jpegtables"
2601 bink_decoder_select="blockdsp hpeldsp"
2602 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2603 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2604 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2605 clearvideo_decoder_select="idctdsp"
2606 cllc_decoder_select="bswapdsp"
2607 comfortnoise_encoder_select="lpc"
2608 cook_decoder_select="audiodsp mdct sinewin"
2609 cscd_decoder_select="lzo"
2610 cscd_decoder_suggest="zlib"
2611 dca_decoder_select="mdct"
2612 dds_decoder_select="texturedsp"
2613 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2614 dnxhd_decoder_select="blockdsp idctdsp"
2615 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2616 dolby_e_decoder_select="mdct"
2617 dvvideo_decoder_select="dvprofile idctdsp"
2618 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2619 dxa_decoder_deps="zlib"
2620 dxv_decoder_select="lzf texturedsp"
2621 eac3_decoder_select="ac3_decoder"
2622 eac3_encoder_select="ac3_encoder"
2623 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2624 eatgq_decoder_select="aandcttables"
2625 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2626 exr_decoder_deps="zlib"
2627 ffv1_decoder_select="rangecoder"
2628 ffv1_encoder_select="rangecoder"
2629 ffvhuff_decoder_select="huffyuv_decoder"
2630 ffvhuff_encoder_select="huffyuv_encoder"
2631 fic_decoder_select="golomb"
2632 flac_decoder_select="flacdsp"
2633 flac_encoder_select="bswapdsp flacdsp lpc"
2634 flashsv2_decoder_deps="zlib"
2635 flashsv2_encoder_deps="zlib"
2636 flashsv_decoder_deps="zlib"
2637 flashsv_encoder_deps="zlib"
2638 flv_decoder_select="h263_decoder"
2639 flv_encoder_select="h263_encoder"
2640 fourxm_decoder_select="blockdsp bswapdsp"
2641 fraps_decoder_select="bswapdsp huffman"
2642 g2m_decoder_deps="zlib"
2643 g2m_decoder_select="blockdsp idctdsp jpegtables"
2644 g729_decoder_select="audiodsp"
2645 h261_decoder_select="mpegvideo"
2646 h261_encoder_select="mpegvideoenc"
2647 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2648 h263_encoder_select="h263dsp mpegvideoenc"
2649 h263i_decoder_select="h263_decoder"
2650 h263p_decoder_select="h263_decoder"
2651 h263p_encoder_select="h263_encoder"
2652 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2653 h264_decoder_suggest="error_resilience"
2654 hap_decoder_select="snappy texturedsp"
2655 hap_encoder_deps="libsnappy"
2656 hap_encoder_select="texturedspenc"
2657 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2658 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2659 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2660 iac_decoder_select="imc_decoder"
2661 imc_decoder_select="bswapdsp fft mdct sinewin"
2662 indeo3_decoder_select="hpeldsp"
2663 indeo4_decoder_select="ividsp"
2664 indeo5_decoder_select="ividsp"
2665 interplay_video_decoder_select="hpeldsp"
2666 jpegls_decoder_select="mjpeg_decoder"
2667 jv_decoder_select="blockdsp"
2668 lagarith_decoder_select="llviddsp"
2669 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2670 magicyuv_decoder_select="llviddsp"
2671 magicyuv_encoder_select="llvidencdsp"
2672 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2673 metasound_decoder_select="lsp mdct sinewin"
2674 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2675 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2676 mjpeg_encoder_select="jpegtables mpegvideoenc"
2677 mjpegb_decoder_select="mjpeg_decoder"
2678 mlp_decoder_select="mlp_parser"
2679 mlp_encoder_select="lpc"
2680 motionpixels_decoder_select="bswapdsp"
2681 mp1_decoder_select="mpegaudio"
2682 mp1float_decoder_select="mpegaudio"
2683 mp2_decoder_select="mpegaudio"
2684 mp2float_decoder_select="mpegaudio"
2685 mp3_decoder_select="mpegaudio"
2686 mp3adu_decoder_select="mpegaudio"
2687 mp3adufloat_decoder_select="mpegaudio"
2688 mp3float_decoder_select="mpegaudio"
2689 mp3on4_decoder_select="mpegaudio"
2690 mp3on4float_decoder_select="mpegaudio"
2691 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2692 mpc8_decoder_select="mpegaudiodsp"
2693 mpegvideo_decoder_select="mpegvideo"
2694 mpeg1video_decoder_select="mpegvideo"
2695 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2696 mpeg2video_decoder_select="mpegvideo"
2697 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2698 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2699 mpeg4_encoder_select="h263_encoder"
2700 msa1_decoder_select="mss34dsp"
2701 mscc_decoder_deps="zlib"
2702 msmpeg4v1_decoder_select="h263_decoder"
2703 msmpeg4v2_decoder_select="h263_decoder"
2704 msmpeg4v2_encoder_select="h263_encoder"
2705 msmpeg4v3_decoder_select="h263_decoder"
2706 msmpeg4v3_encoder_select="h263_encoder"
2707 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2708 mts2_decoder_select="mss34dsp"
2709 mwsc_decoder_deps="zlib"
2710 mxpeg_decoder_select="mjpeg_decoder"
2711 nellymoser_decoder_select="mdct sinewin"
2712 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2713 nuv_decoder_select="idctdsp lzo"
2714 on2avc_decoder_select="mdct"
2715 opus_decoder_deps="swresample"
2716 opus_decoder_select="mdct15"
2717 opus_encoder_select="audio_frame_queue mdct15"
2718 png_decoder_deps="zlib"
2719 png_encoder_deps="zlib"
2720 png_encoder_select="llvidencdsp"
2721 prores_decoder_select="blockdsp idctdsp"
2722 prores_encoder_select="fdctdsp"
2723 qcelp_decoder_select="lsp"
2724 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2725 ra_144_decoder_select="audiodsp"
2726 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2727 ralf_decoder_select="golomb"
2728 rasc_decoder_deps="zlib"
2729 rawvideo_decoder_select="bswapdsp"
2730 rscc_decoder_deps="zlib"
2731 rtjpeg_decoder_select="me_cmp"
2732 rv10_decoder_select="h263_decoder"
2733 rv10_encoder_select="h263_encoder"
2734 rv20_decoder_select="h263_decoder"
2735 rv20_encoder_select="h263_encoder"
2736 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2737 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2738 screenpresso_decoder_deps="zlib"
2739 shorten_decoder_select="bswapdsp"
2740 sipr_decoder_select="lsp"
2741 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2742 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2743 sonic_decoder_select="golomb rangecoder"
2744 sonic_encoder_select="golomb rangecoder"
2745 sonic_ls_encoder_select="golomb rangecoder"
2746 sp5x_decoder_select="mjpeg_decoder"
2747 speedhq_decoder_select="mpegvideo"
2748 srgc_decoder_deps="zlib"
2749 svq1_decoder_select="hpeldsp"
2750 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2751 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2752 svq3_decoder_suggest="zlib"
2753 tak_decoder_select="audiodsp"
2754 tdsc_decoder_deps="zlib"
2755 tdsc_decoder_select="mjpeg_decoder"
2756 theora_decoder_select="vp3_decoder"
2757 thp_decoder_select="mjpeg_decoder"
2758 tiff_decoder_suggest="zlib lzma"
2759 tiff_encoder_suggest="zlib"
2760 truehd_decoder_select="mlp_parser"
2761 truehd_encoder_select="lpc"
2762 truemotion2_decoder_select="bswapdsp"
2763 truespeech_decoder_select="bswapdsp"
2764 tscc_decoder_deps="zlib"
2765 twinvq_decoder_select="mdct lsp sinewin"
2766 txd_decoder_select="texturedsp"
2767 utvideo_decoder_select="bswapdsp llviddsp"
2768 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2769 vble_decoder_select="llviddsp"
2770 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2771 vc1image_decoder_select="vc1_decoder"
2772 vorbis_decoder_select="mdct"
2773 vorbis_encoder_select="audio_frame_queue mdct"
2774 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2775 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2776 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2777 vp6a_decoder_select="vp6_decoder"
2778 vp6f_decoder_select="vp6_decoder"
2779 vp7_decoder_select="h264pred videodsp vp8dsp"
2780 vp8_decoder_select="h264pred videodsp vp8dsp"
2781 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2782 wcmv_decoder_deps="zlib"
2783 webp_decoder_select="vp8_decoder exif"
2784 wmalossless_decoder_select="llauddsp"
2785 wmapro_decoder_select="mdct sinewin wma_freqs"
2786 wmav1_decoder_select="mdct sinewin wma_freqs"
2787 wmav1_encoder_select="mdct sinewin wma_freqs"
2788 wmav2_decoder_select="mdct sinewin wma_freqs"
2789 wmav2_encoder_select="mdct sinewin wma_freqs"
2790 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2791 wmv1_decoder_select="h263_decoder"
2792 wmv1_encoder_select="h263_encoder"
2793 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2794 wmv2_encoder_select="h263_encoder wmv2dsp"
2795 wmv3_decoder_select="vc1_decoder"
2796 wmv3image_decoder_select="wmv3_decoder"
2797 xma1_decoder_select="wmapro_decoder"
2798 xma2_decoder_select="wmapro_decoder"
2799 zerocodec_decoder_deps="zlib"
2800 zlib_decoder_deps="zlib"
2801 zlib_encoder_deps="zlib"
2802 zmbv_decoder_deps="zlib"
2803 zmbv_encoder_deps="zlib"
2804
2805 # hardware accelerators
2806 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2807 cuda_deps="ffnvcodec"
2808 cuvid_deps="ffnvcodec"
2809 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2810 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2811 ffnvcodec_deps_any="libdl LoadLibrary"
2812 nvdec_deps="ffnvcodec"
2813 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2814 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2815 xvmc_deps="X11_extensions_XvMClib_h"
2816
2817 h263_vaapi_hwaccel_deps="vaapi"
2818 h263_vaapi_hwaccel_select="h263_decoder"
2819 h263_videotoolbox_hwaccel_deps="videotoolbox"
2820 h263_videotoolbox_hwaccel_select="h263_decoder"
2821 h264_d3d11va_hwaccel_deps="d3d11va"
2822 h264_d3d11va_hwaccel_select="h264_decoder"
2823 h264_d3d11va2_hwaccel_deps="d3d11va"
2824 h264_d3d11va2_hwaccel_select="h264_decoder"
2825 h264_dxva2_hwaccel_deps="dxva2"
2826 h264_dxva2_hwaccel_select="h264_decoder"
2827 h264_nvdec_hwaccel_deps="nvdec"
2828 h264_nvdec_hwaccel_select="h264_decoder"
2829 h264_vaapi_hwaccel_deps="vaapi"
2830 h264_vaapi_hwaccel_select="h264_decoder"
2831 h264_vdpau_hwaccel_deps="vdpau"
2832 h264_vdpau_hwaccel_select="h264_decoder"
2833 h264_videotoolbox_hwaccel_deps="videotoolbox"
2834 h264_videotoolbox_hwaccel_select="h264_decoder"
2835 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2836 hevc_d3d11va_hwaccel_select="hevc_decoder"
2837 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2838 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2839 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2840 hevc_dxva2_hwaccel_select="hevc_decoder"
2841 hevc_nvdec_hwaccel_deps="nvdec"
2842 hevc_nvdec_hwaccel_select="hevc_decoder"
2843 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2844 hevc_vaapi_hwaccel_select="hevc_decoder"
2845 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2846 hevc_vdpau_hwaccel_select="hevc_decoder"
2847 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2848 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2849 mjpeg_nvdec_hwaccel_deps="nvdec"
2850 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2851 mjpeg_vaapi_hwaccel_deps="vaapi"
2852 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2853 mpeg_xvmc_hwaccel_deps="xvmc"
2854 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2855 mpeg1_nvdec_hwaccel_deps="nvdec"
2856 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2857 mpeg1_vdpau_hwaccel_deps="vdpau"
2858 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2859 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2860 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2861 mpeg1_xvmc_hwaccel_deps="xvmc"
2862 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2863 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2864 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2865 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2866 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2867 mpeg2_dxva2_hwaccel_deps="dxva2"
2868 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2869 mpeg2_nvdec_hwaccel_deps="nvdec"
2870 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2871 mpeg2_vaapi_hwaccel_deps="vaapi"
2872 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2873 mpeg2_vdpau_hwaccel_deps="vdpau"
2874 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2875 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2876 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2877 mpeg2_xvmc_hwaccel_deps="xvmc"
2878 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2879 mpeg4_nvdec_hwaccel_deps="nvdec"
2880 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2881 mpeg4_vaapi_hwaccel_deps="vaapi"
2882 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2883 mpeg4_vdpau_hwaccel_deps="vdpau"
2884 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2885 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2886 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2887 vc1_d3d11va_hwaccel_deps="d3d11va"
2888 vc1_d3d11va_hwaccel_select="vc1_decoder"
2889 vc1_d3d11va2_hwaccel_deps="d3d11va"
2890 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2891 vc1_dxva2_hwaccel_deps="dxva2"
2892 vc1_dxva2_hwaccel_select="vc1_decoder"
2893 vc1_nvdec_hwaccel_deps="nvdec"
2894 vc1_nvdec_hwaccel_select="vc1_decoder"
2895 vc1_vaapi_hwaccel_deps="vaapi"
2896 vc1_vaapi_hwaccel_select="vc1_decoder"
2897 vc1_vdpau_hwaccel_deps="vdpau"
2898 vc1_vdpau_hwaccel_select="vc1_decoder"
2899 vp8_nvdec_hwaccel_deps="nvdec"
2900 vp8_nvdec_hwaccel_select="vp8_decoder"
2901 vp8_vaapi_hwaccel_deps="vaapi"
2902 vp8_vaapi_hwaccel_select="vp8_decoder"
2903 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2904 vp9_d3d11va_hwaccel_select="vp9_decoder"
2905 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2906 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2907 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2908 vp9_dxva2_hwaccel_select="vp9_decoder"
2909 vp9_nvdec_hwaccel_deps="nvdec"
2910 vp9_nvdec_hwaccel_select="vp9_decoder"
2911 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2912 vp9_vaapi_hwaccel_select="vp9_decoder"
2913 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2914 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2915 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2916 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2917 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2918 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2919
2920 # hardware-accelerated codecs
2921 omx_deps="libdl pthreads"
2922 omx_rpi_select="omx"
2923 qsv_deps="libmfx"
2924 qsvdec_select="qsv"
2925 qsvenc_select="qsv"
2926 qsvvpp_select="qsv"
2927 vaapi_encode_deps="vaapi"
2928 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2929
2930 hwupload_cuda_filter_deps="ffnvcodec"
2931 scale_npp_filter_deps="ffnvcodec libnpp"
2932 scale_cuda_filter_deps="cuda_sdk"
2933 thumbnail_cuda_filter_deps="cuda_sdk"
2934 transpose_npp_filter_deps="ffnvcodec libnpp"
2935
2936 amf_deps_any="libdl LoadLibrary"
2937 nvenc_deps="ffnvcodec"
2938 nvenc_deps_any="libdl LoadLibrary"
2939 nvenc_encoder_deps="nvenc"
2940
2941 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2942 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2943 h264_amf_encoder_deps="amf"
2944 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2945 h264_cuvid_decoder_deps="cuvid"
2946 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2947 h264_mediacodec_decoder_deps="mediacodec"
2948 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2949 h264_mmal_decoder_deps="mmal"
2950 h264_nvenc_encoder_deps="nvenc"
2951 h264_omx_encoder_deps="omx"
2952 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2953 h264_qsv_encoder_select="qsvenc"
2954 h264_rkmpp_decoder_deps="rkmpp"
2955 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2956 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2957 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2958 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2959 hevc_amf_encoder_deps="amf"
2960 hevc_cuvid_decoder_deps="cuvid"
2961 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2962 hevc_mediacodec_decoder_deps="mediacodec"
2963 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2964 hevc_nvenc_encoder_deps="nvenc"
2965 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2966 hevc_qsv_encoder_select="hevcparse qsvenc"
2967 hevc_rkmpp_decoder_deps="rkmpp"
2968 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2969 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2970 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2971 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2972 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2973 mjpeg_cuvid_decoder_deps="cuvid"
2974 mjpeg_qsv_encoder_deps="libmfx"
2975 mjpeg_qsv_encoder_select="qsvenc"
2976 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2977 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
2978 mpeg1_cuvid_decoder_deps="cuvid"
2979 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2980 mpeg2_crystalhd_decoder_select="crystalhd"
2981 mpeg2_cuvid_decoder_deps="cuvid"
2982 mpeg2_mmal_decoder_deps="mmal"
2983 mpeg2_mediacodec_decoder_deps="mediacodec"
2984 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2985 mpeg2_qsv_encoder_select="qsvenc"
2986 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2987 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2988 mpeg4_crystalhd_decoder_select="crystalhd"
2989 mpeg4_cuvid_decoder_deps="cuvid"
2990 mpeg4_mediacodec_decoder_deps="mediacodec"
2991 mpeg4_mmal_decoder_deps="mmal"
2992 mpeg4_omx_encoder_deps="omx"
2993 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2994 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2995 msmpeg4_crystalhd_decoder_select="crystalhd"
2996 nvenc_h264_encoder_select="h264_nvenc_encoder"
2997 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2998 vc1_crystalhd_decoder_select="crystalhd"
2999 vc1_cuvid_decoder_deps="cuvid"
3000 vc1_mmal_decoder_deps="mmal"
3001 vc1_qsv_decoder_select="qsvdec vc1_parser"
3002 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3003 vp8_cuvid_decoder_deps="cuvid"
3004 vp8_mediacodec_decoder_deps="mediacodec"
3005 vp8_qsv_decoder_select="qsvdec vp8_parser"
3006 vp8_rkmpp_decoder_deps="rkmpp"
3007 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3008 vp8_vaapi_encoder_select="vaapi_encode"
3009 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3010 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3011 vp9_cuvid_decoder_deps="cuvid"
3012 vp9_mediacodec_decoder_deps="mediacodec"
3013 vp9_rkmpp_decoder_deps="rkmpp"
3014 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3015 vp9_vaapi_encoder_select="vaapi_encode"
3016 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3017 wmv3_crystalhd_decoder_select="crystalhd"
3018
3019 # parsers
3020 aac_parser_select="adts_header"
3021 h264_parser_select="golomb h264dsp h264parse"
3022 hevc_parser_select="hevcparse"
3023 mpegaudio_parser_select="mpegaudioheader"
3024 mpegvideo_parser_select="mpegvideo"
3025 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3026 vc1_parser_select="vc1dsp"
3027
3028 # bitstream_filters
3029 aac_adtstoasc_bsf_select="adts_header"
3030 eac3_core_bsf_select="ac3_parser"
3031 filter_units_bsf_select="cbs"
3032 h264_metadata_bsf_deps="const_nan"
3033 h264_metadata_bsf_select="cbs_h264"
3034 h264_redundant_pps_bsf_select="cbs_h264"
3035 hevc_metadata_bsf_select="cbs_h265"
3036 mjpeg2jpeg_bsf_select="jpegtables"
3037 mpeg2_metadata_bsf_select="cbs_mpeg2"
3038 trace_headers_bsf_select="cbs"
3039 vp9_metadata_bsf_select="cbs_vp9"
3040
3041 # external libraries
3042 aac_at_decoder_deps="audiotoolbox"
3043 aac_at_decoder_select="aac_adtstoasc_bsf"
3044 ac3_at_decoder_deps="audiotoolbox"
3045 ac3_at_decoder_select="ac3_parser"
3046 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3047 alac_at_decoder_deps="audiotoolbox"
3048 amr_nb_at_decoder_deps="audiotoolbox"
3049 avisynth_deps_any="libdl LoadLibrary"
3050 avisynth_demuxer_deps="avisynth"
3051 avisynth_demuxer_select="riffdec"
3052 eac3_at_decoder_deps="audiotoolbox"
3053 eac3_at_decoder_select="ac3_parser"
3054 gsm_ms_at_decoder_deps="audiotoolbox"
3055 ilbc_at_decoder_deps="audiotoolbox"
3056 mp1_at_decoder_deps="audiotoolbox"
3057 mp2_at_decoder_deps="audiotoolbox"
3058 mp3_at_decoder_deps="audiotoolbox"
3059 mp1_at_decoder_select="mpegaudioheader"
3060 mp2_at_decoder_select="mpegaudioheader"
3061 mp3_at_decoder_select="mpegaudioheader"
3062 pcm_alaw_at_decoder_deps="audiotoolbox"
3063 pcm_mulaw_at_decoder_deps="audiotoolbox"
3064 qdmc_at_decoder_deps="audiotoolbox"
3065 qdm2_at_decoder_deps="audiotoolbox"
3066 aac_at_encoder_deps="audiotoolbox"
3067 aac_at_encoder_select="audio_frame_queue"
3068 alac_at_encoder_deps="audiotoolbox"
3069 alac_at_encoder_select="audio_frame_queue"
3070 ilbc_at_encoder_deps="audiotoolbox"
3071 ilbc_at_encoder_select="audio_frame_queue"
3072 pcm_alaw_at_encoder_deps="audiotoolbox"
3073 pcm_alaw_at_encoder_select="audio_frame_queue"
3074 pcm_mulaw_at_encoder_deps="audiotoolbox"
3075 pcm_mulaw_at_encoder_select="audio_frame_queue"
3076 chromaprint_muxer_deps="chromaprint"
3077 h264_videotoolbox_encoder_deps="pthreads"
3078 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3079 hevc_videotoolbox_encoder_deps="pthreads"
3080 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3081 libaom_av1_decoder_deps="libaom"
3082 libaom_av1_encoder_deps="libaom"
3083 libaom_av1_encoder_select="extract_extradata_bsf"
3084 libcelt_decoder_deps="libcelt"
3085 libcodec2_decoder_deps="libcodec2"
3086 libcodec2_encoder_deps="libcodec2"
3087 libdavs2_decoder_deps="libdavs2"
3088 libfdk_aac_decoder_deps="libfdk_aac"
3089 libfdk_aac_encoder_deps="libfdk_aac"
3090 libfdk_aac_encoder_select="audio_frame_queue"
3091 libgme_demuxer_deps="libgme"
3092 libgsm_decoder_deps="libgsm"
3093 libgsm_encoder_deps="libgsm"
3094 libgsm_ms_decoder_deps="libgsm"
3095 libgsm_ms_encoder_deps="libgsm"
3096 libilbc_decoder_deps="libilbc"
3097 libilbc_encoder_deps="libilbc"
3098 libkvazaar_encoder_deps="libkvazaar"
3099 libmodplug_demuxer_deps="libmodplug"
3100 libmp3lame_encoder_deps="libmp3lame"
3101 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3102 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3103 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3104 libopencore_amrnb_encoder_select="audio_frame_queue"
3105 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3106 libopenh264_decoder_deps="libopenh264"
3107 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3108 libopenh264_encoder_deps="libopenh264"
3109 libopenjpeg_decoder_deps="libopenjpeg"
3110 libopenjpeg_encoder_deps="libopenjpeg"
3111 libopenmpt_demuxer_deps="libopenmpt"
3112 libopus_decoder_deps="libopus"
3113 libopus_encoder_deps="libopus"
3114 libopus_encoder_select="audio_frame_queue"
3115 librsvg_decoder_deps="librsvg"
3116 libshine_encoder_deps="libshine"
3117 libshine_encoder_select="audio_frame_queue"
3118 libspeex_decoder_deps="libspeex"
3119 libspeex_encoder_deps="libspeex"
3120 libspeex_encoder_select="audio_frame_queue"
3121 libtheora_encoder_deps="libtheora"
3122 libtwolame_encoder_deps="libtwolame"
3123 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3124 libvorbis_decoder_deps="libvorbis"
3125 libvorbis_encoder_deps="libvorbis libvorbisenc"
3126 libvorbis_encoder_select="audio_frame_queue"
3127 libvpx_vp8_decoder_deps="libvpx"
3128 libvpx_vp8_encoder_deps="libvpx"
3129 libvpx_vp9_decoder_deps="libvpx"
3130 libvpx_vp9_encoder_deps="libvpx"
3131 libwavpack_encoder_deps="libwavpack"
3132 libwavpack_encoder_select="audio_frame_queue"
3133 libwebp_encoder_deps="libwebp"
3134 libwebp_anim_encoder_deps="libwebp"
3135 libx262_encoder_deps="libx262"
3136 libx264_encoder_deps="libx264"
3137 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3138 libx264rgb_encoder_select="libx264_encoder"
3139 libx265_encoder_deps="libx265"
3140 libxavs_encoder_deps="libxavs"
3141 libxavs2_encoder_deps="libxavs2"
3142 libxvid_encoder_deps="libxvid"
3143 libzvbi_teletext_decoder_deps="libzvbi"
3144 vapoursynth_demuxer_deps="vapoursynth"
3145 videotoolbox_suggest="coreservices"
3146 videotoolbox_deps="corefoundation coremedia corevideo"
3147 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3148
3149 # demuxers / muxers
3150 ac3_demuxer_select="ac3_parser"
3151 aiff_muxer_select="iso_media"
3152 asf_demuxer_select="riffdec"
3153 asf_o_demuxer_select="riffdec"
3154 asf_muxer_select="riffenc"
3155 asf_stream_muxer_select="asf_muxer"
3156 avi_demuxer_select="iso_media riffdec exif"
3157 avi_muxer_select="riffenc"
3158 caf_demuxer_select="iso_media riffdec"
3159 caf_muxer_select="iso_media"
3160 dash_muxer_select="mp4_muxer"
3161 dash_demuxer_deps="libxml2"
3162 dirac_demuxer_select="dirac_parser"
3163 dts_demuxer_select="dca_parser"
3164 dtshd_demuxer_select="dca_parser"
3165 dv_demuxer_select="dvprofile"
3166 dv_muxer_select="dvprofile"
3167 dxa_demuxer_select="riffdec"
3168 eac3_demuxer_select="ac3_parser"
3169 f4v_muxer_select="mov_muxer"
3170 fifo_muxer_deps="threads"
3171 flac_demuxer_select="flac_parser"
3172 hds_muxer_select="flv_muxer"
3173 hls_muxer_select="mpegts_muxer"
3174 hls_muxer_suggest="gcrypt openssl"
3175 image2_alias_pix_demuxer_select="image2_demuxer"
3176 image2_brender_pix_demuxer_select="image2_demuxer"
3177 ipod_muxer_select="mov_muxer"
3178 ismv_muxer_select="mov_muxer"
3179 matroska_audio_muxer_select="matroska_muxer"
3180 matroska_demuxer_select="iso_media riffdec"
3181 matroska_demuxer_suggest="bzlib lzo zlib"
3182 matroska_muxer_select="iso_media riffenc"
3183 mmf_muxer_select="riffenc"
3184 mov_demuxer_select="iso_media riffdec"
3185 mov_demuxer_suggest="zlib"
3186 mov_muxer_select="iso_media riffenc rtpenc_chain"
3187 mp3_demuxer_select="mpegaudio_parser"
3188 mp3_muxer_select="mpegaudioheader"
3189 mp4_muxer_select="mov_muxer"
3190 mpegts_demuxer_select="iso_media"
3191 mpegts_muxer_select="adts_muxer latm_muxer"
3192 mpegtsraw_demuxer_select="mpegts_demuxer"
3193 mxf_d10_muxer_select="mxf_muxer"
3194 mxf_opatom_muxer_select="mxf_muxer"
3195 nut_muxer_select="riffenc"
3196 nuv_demuxer_select="riffdec"
3197 oga_muxer_select="ogg_muxer"
3198 ogg_demuxer_select="dirac_parse"
3199 ogv_muxer_select="ogg_muxer"
3200 opus_muxer_select="ogg_muxer"
3201 psp_muxer_select="mov_muxer"
3202 rtp_demuxer_select="sdp_demuxer"
3203 rtp_muxer_select="golomb"
3204 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3205 rtsp_demuxer_select="http_protocol rtpdec"
3206 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3207 sap_demuxer_select="sdp_demuxer"
3208 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3209 sdp_demuxer_select="rtpdec"
3210 smoothstreaming_muxer_select="ismv_muxer"
3211 spdif_demuxer_select="adts_header"
3212 spdif_muxer_select="adts_header"
3213 spx_muxer_select="ogg_muxer"
3214 swf_demuxer_suggest="zlib"
3215 tak_demuxer_select="tak_parser"
3216 tg2_muxer_select="mov_muxer"
3217 tgp_muxer_select="mov_muxer"
3218 vobsub_demuxer_select="mpegps_demuxer"
3219 w64_demuxer_select="wav_demuxer"
3220 w64_muxer_select="wav_muxer"
3221 wav_demuxer_select="riffdec"
3222 wav_muxer_select="riffenc"
3223 webm_muxer_select="iso_media riffenc"
3224 webm_dash_manifest_demuxer_select="matroska_demuxer"
3225 wtv_demuxer_select="mpegts_demuxer riffdec"
3226 wtv_muxer_select="mpegts_muxer riffenc"
3227 xmv_demuxer_select="riffdec"
3228 xwma_demuxer_select="riffdec"
3229
3230 # indevs / outdevs
3231 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3232 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3233 alsa_indev_deps="alsa"
3234 alsa_outdev_deps="alsa"
3235 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3236 avfoundation_indev_suggest="coregraphics applicationservices"
3237 avfoundation_indev_extralibs="-framework Foundation"
3238 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3239 caca_outdev_deps="libcaca"
3240 decklink_deps_any="libdl LoadLibrary"
3241 decklink_indev_deps="decklink threads"
3242 decklink_indev_extralibs="-lstdc++"
3243 decklink_outdev_deps="decklink threads"
3244 decklink_outdev_suggest="libklvanc"
3245 decklink_outdev_extralibs="-lstdc++"
3246 libndi_newtek_indev_deps="libndi_newtek"
3247 libndi_newtek_indev_extralibs="-lndi"
3248 libndi_newtek_outdev_deps="libndi_newtek"
3249 libndi_newtek_outdev_extralibs="-lndi"
3250 dshow_indev_deps="IBaseFilter"
3251 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3252 fbdev_indev_deps="linux_fb_h"
3253 fbdev_outdev_deps="linux_fb_h"
3254 gdigrab_indev_deps="CreateDIBSection"
3255 gdigrab_indev_extralibs="-lgdi32"
3256 gdigrab_indev_select="bmp_decoder"
3257 iec61883_indev_deps="libiec61883"
3258 jack_indev_deps="libjack"
3259 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3260 kmsgrab_indev_deps="libdrm"
3261 lavfi_indev_deps="avfilter"
3262 libcdio_indev_deps="libcdio"
3263 libdc1394_indev_deps="libdc1394"
3264 openal_indev_deps="openal"
3265 opengl_outdev_deps="opengl"
3266 oss_indev_deps_any="sys_soundcard_h"
3267 oss_outdev_deps_any="sys_soundcard_h"
3268 pulse_indev_deps="libpulse"
3269 pulse_outdev_deps="libpulse"
3270 sdl2_outdev_deps="sdl2"
3271 sndio_indev_deps="sndio"
3272 sndio_outdev_deps="sndio"
3273 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3274 v4l2_indev_suggest="libv4l2"
3275 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3276 v4l2_outdev_suggest="libv4l2"
3277 vfwcap_indev_deps="vfw32 vfwcap_defines"
3278 xcbgrab_indev_deps="libxcb"
3279 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3280 xv_outdev_deps="xlib"
3281
3282 # protocols
3283 async_protocol_deps="threads"
3284 bluray_protocol_deps="libbluray"
3285 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3286 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3287 ffrtmpcrypt_protocol_select="tcp_protocol"
3288 ffrtmphttp_protocol_conflict="librtmp_protocol"
3289 ffrtmphttp_protocol_select="http_protocol"
3290 ftp_protocol_select="tcp_protocol"
3291 gopher_protocol_select="network"
3292 http_protocol_select="tcp_protocol"
3293 http_protocol_suggest="zlib"
3294 httpproxy_protocol_select="tcp_protocol"
3295 httpproxy_protocol_suggest="zlib"
3296 https_protocol_select="tls_protocol"
3297 https_protocol_suggest="zlib"
3298 icecast_protocol_select="http_protocol"
3299 mmsh_protocol_select="http_protocol"
3300 mmst_protocol_select="network"
3301 rtmp_protocol_conflict="librtmp_protocol"
3302 rtmp_protocol_select="tcp_protocol"
3303 rtmp_protocol_suggest="zlib"
3304 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3305 rtmpe_protocol_suggest="zlib"
3306 rtmps_protocol_conflict="librtmp_protocol"
3307 rtmps_protocol_select="tls_protocol"
3308 rtmps_protocol_suggest="zlib"
3309 rtmpt_protocol_select="ffrtmphttp_protocol"
3310 rtmpt_protocol_suggest="zlib"
3311 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3312 rtmpte_protocol_suggest="zlib"
3313 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3314 rtmpts_protocol_suggest="zlib"
3315 rtp_protocol_select="udp_protocol"
3316 schannel_conflict="openssl gnutls libtls mbedtls"
3317 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3318 sctp_protocol_select="network"
3319 securetransport_conflict="openssl gnutls libtls mbedtls"
3320 srtp_protocol_select="rtp_protocol srtp"
3321 tcp_protocol_select="network"
3322 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3323 tls_protocol_select="tcp_protocol"
3324 udp_protocol_select="network"
3325 udplite_protocol_select="network"
3326 unix_protocol_deps="sys_un_h"
3327 unix_protocol_select="network"
3328
3329 # external library protocols
3330 librtmp_protocol_deps="librtmp"
3331 librtmpe_protocol_deps="librtmp"
3332 librtmps_protocol_deps="librtmp"
3333 librtmpt_protocol_deps="librtmp"
3334 librtmpte_protocol_deps="librtmp"
3335 libsmbclient_protocol_deps="libsmbclient gplv3"
3336 libsrt_protocol_deps="libsrt"
3337 libsrt_protocol_select="network"
3338 libssh_protocol_deps="libssh"
3339 libtls_conflict="openssl gnutls mbedtls"
3340
3341 # filters
3342 afftfilt_filter_deps="avcodec"
3343 afftfilt_filter_select="fft"
3344 afir_filter_deps="avcodec"
3345 afir_filter_select="fft"
3346 amovie_filter_deps="avcodec avformat"
3347 aresample_filter_deps="swresample"
3348 ass_filter_deps="libass"
3349 atempo_filter_deps="avcodec"
3350 atempo_filter_select="rdft"
3351 avgblur_opencl_filter_deps="opencl"
3352 azmq_filter_deps="libzmq"
3353 blackframe_filter_deps="gpl"
3354 bm3d_filter_deps="avcodec"
3355 bm3d_filter_select="dct"
3356 boxblur_filter_deps="gpl"
3357 boxblur_opencl_filter_deps="opencl gpl"
3358 bs2b_filter_deps="libbs2b"
3359 colormatrix_filter_deps="gpl"
3360 convolution_opencl_filter_deps="opencl"
3361 convolve_filter_deps="avcodec"
3362 convolve_filter_select="fft"
3363 coreimage_filter_deps="coreimage appkit"
3364 coreimage_filter_extralibs="-framework OpenGL"
3365 coreimagesrc_filter_deps="coreimage appkit"
3366 coreimagesrc_filter_extralibs="-framework OpenGL"
3367 cover_rect_filter_deps="avcodec avformat gpl"
3368 cropdetect_filter_deps="gpl"
3369 deconvolve_filter_deps="avcodec"
3370 deconvolve_filter_select="fft"
3371 deinterlace_qsv_filter_deps="libmfx"
3372 deinterlace_vaapi_filter_deps="vaapi"
3373 delogo_filter_deps="gpl"
3374 denoise_vaapi_filter_deps="vaapi"
3375 deshake_filter_select="pixelutils"
3376 dilation_opencl_filter_deps="opencl"
3377 drawtext_filter_deps="libfreetype"
3378 drawtext_filter_suggest="libfontconfig libfribidi"
3379 elbg_filter_deps="avcodec"
3380 eq_filter_deps="gpl"
3381 erosion_opencl_filter_deps="opencl"
3382 fftfilt_filter_deps="avcodec"
3383 fftfilt_filter_select="rdft"
3384 fftdnoiz_filter_deps="avcodec"
3385 fftdnoiz_filter_select="fft"
3386 find_rect_filter_deps="avcodec avformat gpl"
3387 firequalizer_filter_deps="avcodec"
3388 firequalizer_filter_select="rdft"
3389 flite_filter_deps="libflite"
3390 framerate_filter_select="pixelutils"
3391 frei0r_filter_deps="frei0r libdl"
3392 frei0r_src_filter_deps="frei0r libdl"
3393 fspp_filter_deps="gpl"
3394 geq_filter_deps="gpl"
3395 histeq_filter_deps="gpl"
3396 hqdn3d_filter_deps="gpl"
3397 interlace_filter_deps="gpl"
3398 kerndeint_filter_deps="gpl"
3399 ladspa_filter_deps="ladspa libdl"
3400 lensfun_filter_deps="liblensfun version3"
3401 lv2_filter_deps="lv2"
3402 mcdeint_filter_deps="avcodec gpl"
3403 movie_filter_deps="avcodec avformat"
3404 mpdecimate_filter_deps="gpl"
3405 mpdecimate_filter_select="pixelutils"
3406 mptestsrc_filter_deps="gpl"
3407 negate_filter_deps="lut_filter"
3408 nnedi_filter_deps="gpl"
3409 ocr_filter_deps="libtesseract"
3410 ocv_filter_deps="libopencv"
3411 openclsrc_filter_deps="opencl"
3412 overlay_opencl_filter_deps="opencl"
3413 overlay_qsv_filter_deps="libmfx"
3414 overlay_qsv_filter_select="qsvvpp"
3415 owdenoise_filter_deps="gpl"
3416 pan_filter_deps="swresample"
3417 perspective_filter_deps="gpl"
3418 phase_filter_deps="gpl"
3419 pp7_filter_deps="gpl"
3420 pp_filter_deps="gpl postproc"
3421 prewitt_opencl_filter_deps="opencl"
3422 procamp_vaapi_filter_deps="vaapi"
3423 program_opencl_filter_deps="opencl"
3424 pullup_filter_deps="gpl"
3425 removelogo_filter_deps="avcodec avformat swscale"
3426 repeatfields_filter_deps="gpl"
3427 resample_filter_deps="avresample"
3428 roberts_opencl_filter_deps="opencl"
3429 rubberband_filter_deps="librubberband"
3430 sab_filter_deps="gpl swscale"
3431 scale2ref_filter_deps="swscale"
3432 scale_filter_deps="swscale"
3433 scale_qsv_filter_deps="libmfx"
3434 select_filter_select="pixelutils"
3435 sharpness_vaapi_filter_deps="vaapi"
3436 showcqt_filter_deps="avcodec avformat swscale"
3437 showcqt_filter_suggest="libfontconfig libfreetype"
3438 showcqt_filter_select="fft"
3439 showfreqs_filter_deps="avcodec"
3440 showfreqs_filter_select="fft"
3441 showspectrum_filter_deps="avcodec"
3442 showspectrum_filter_select="fft"
3443 showspectrumpic_filter_deps="avcodec"
3444 showspectrumpic_filter_select="fft"
3445 signature_filter_deps="gpl avcodec avformat"
3446 smartblur_filter_deps="gpl swscale"
3447 sobel_opencl_filter_deps="opencl"
3448 sofalizer_filter_deps="libmysofa avcodec"
3449 sofalizer_filter_select="fft"
3450 spectrumsynth_filter_deps="avcodec"
3451 spectrumsynth_filter_select="fft"
3452 spp_filter_deps="gpl avcodec"
3453 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3454 sr_filter_deps="avformat swscale"
3455 sr_filter_select="dnn"
3456 stereo3d_filter_deps="gpl"
3457 subtitles_filter_deps="avformat avcodec libass"
3458 super2xsai_filter_deps="gpl"
3459 pixfmts_super2xsai_test_deps="super2xsai_filter"
3460 tinterlace_filter_deps="gpl"
3461 tinterlace_merge_test_deps="tinterlace_filter"
3462 tinterlace_pad_test_deps="tinterlace_filter"
3463 tonemap_filter_deps="const_nan"
3464 tonemap_opencl_filter_deps="opencl const_nan"
3465 unsharp_opencl_filter_deps="opencl"
3466 uspp_filter_deps="gpl avcodec"
3467 vaguedenoiser_filter_deps="gpl"
3468 vidstabdetect_filter_deps="libvidstab"
3469 vidstabtransform_filter_deps="libvidstab"
3470 libvmaf_filter_deps="libvmaf pthreads"
3471 zmq_filter_deps="libzmq"
3472 zoompan_filter_deps="swscale"
3473 zscale_filter_deps="libzimg const_nan"
3474 scale_vaapi_filter_deps="vaapi"
3475 vpp_qsv_filter_deps="libmfx"
3476 vpp_qsv_filter_select="qsvvpp"
3477
3478 # examples
3479 avio_dir_cmd_deps="avformat avutil"
3480 avio_reading_deps="avformat avcodec avutil"
3481 decode_audio_example_deps="avcodec avutil"
3482 decode_video_example_deps="avcodec avutil"
3483 demuxing_decoding_example_deps="avcodec avformat avutil"
3484 encode_audio_example_deps="avcodec avutil"
3485 encode_video_example_deps="avcodec avutil"
3486 extract_mvs_example_deps="avcodec avformat avutil"
3487 filter_audio_example_deps="avfilter avutil"
3488 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3489 filtering_video_example_deps="avfilter avcodec avformat avutil"
3490 http_multiclient_example_deps="avformat avutil fork"
3491 hw_decode_example_deps="avcodec avformat avutil"
3492 metadata_example_deps="avformat avutil"
3493 muxing_example_deps="avcodec avformat avutil swscale"
3494 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3495 remuxing_example_deps="avcodec avformat avutil"
3496 resampling_audio_example_deps="avutil swresample"
3497 scaling_video_example_deps="avutil swscale"
3498 transcode_aac_example_deps="avcodec avformat swresample"
3499 transcoding_example_deps="avfilter avcodec avformat avutil"
3500 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3501 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3502
3503 # EXTRALIBS_LIST
3504 cpu_init_extralibs="pthreads_extralibs"
3505 cws2fws_extralibs="zlib_extralibs"
3506
3507 # libraries, in any order
3508 avcodec_deps="avutil"
3509 avcodec_suggest="libm"
3510 avcodec_select="null_bsf"
3511 avdevice_deps="avformat avcodec avutil"
3512 avdevice_suggest="libm"
3513 avfilter_deps="avutil"
3514 avfilter_suggest="libm"
3515 avformat_deps="avcodec avutil"
3516 avformat_suggest="libm network zlib"
3517 avresample_deps="avutil"
3518 avresample_suggest="libm"
3519 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3520 postproc_deps="avutil gpl"
3521 postproc_suggest="libm"
3522 swresample_deps="avutil"
3523 swresample_suggest="libm libsoxr"
3524 swscale_deps="avutil"
3525 swscale_suggest="libm"
3526
3527 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3528 avfilter_extralibs="pthreads_extralibs"
3529 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3530
3531 # programs
3532 ffmpeg_deps="avcodec avfilter avformat"
3533 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3534                null_filter
3535                trim_filter"
3536 ffmpeg_suggest="ole32 psapi shell32"
3537 ffplay_deps="avcodec avformat swscale swresample sdl2"
3538 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3539 ffplay_suggest="shell32"
3540 ffprobe_deps="avcodec avformat"
3541 ffprobe_suggest="shell32"
3542
3543 # documentation
3544 podpages_deps="perl"
3545 manpages_deps="perl pod2man"
3546 htmlpages_deps="perl"
3547 htmlpages_deps_any="makeinfo_html texi2html"
3548 txtpages_deps="perl makeinfo"
3549 doc_deps_any="manpages htmlpages podpages txtpages"
3550
3551 # default parameters
3552
3553 logfile="ffbuild/config.log"
3554
3555 # installation paths
3556 prefix_default="/usr/local"
3557 bindir_default='${prefix}/bin'
3558 datadir_default='${prefix}/share/ffmpeg'
3559 docdir_default='${prefix}/share/doc/ffmpeg'
3560 incdir_default='${prefix}/include'
3561 libdir_default='${prefix}/lib'
3562 mandir_default='${prefix}/share/man'
3563
3564 # toolchain
3565 ar_default="ar"
3566 cc_default="gcc"
3567 cxx_default="g++"
3568 host_cc_default="gcc"
3569 doxygen_default="doxygen"
3570 install="install"
3571 ln_s_default="ln -s -f"
3572 nm_default="nm -g"
3573 pkg_config_default=pkg-config
3574 ranlib_default="ranlib"
3575 strip_default="strip"
3576 version_script='--version-script'
3577 objformat="elf32"
3578 x86asmexe_default="nasm"
3579 windres_default="windres"
3580 nvcc_default="nvcc"
3581 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3582 striptype="direct"
3583
3584 # OS
3585 target_os_default=$(tolower $(uname -s))
3586 host_os=$target_os_default
3587
3588 # machine
3589 if test "$target_os_default" = aix; then
3590     arch_default=$(uname -p)
3591     strip_default="strip -X32_64"
3592 else
3593     arch_default=$(uname -m)
3594 fi
3595 cpu="generic"
3596 intrinsics="none"
3597
3598 # configurable options
3599 enable $PROGRAM_LIST
3600 enable $DOCUMENT_LIST
3601 enable $EXAMPLE_LIST
3602 enable $(filter_out avresample $LIBRARY_LIST)
3603 enable stripping
3604
3605 enable asm
3606 enable debug
3607 enable doc
3608 enable faan faandct faanidct
3609 enable optimizations
3610 enable runtime_cpudetect
3611 enable safe_bitstream_reader
3612 enable static
3613 enable swscale_alpha
3614 enable valgrind_backtrace
3615
3616 sws_max_filter_size_default=256
3617 set_default sws_max_filter_size
3618
3619 # internal components are enabled by default
3620 enable $EXTRALIBS_LIST
3621
3622 # Avoid external, non-system, libraries getting enabled by dependency resolution
3623 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3624
3625 # build settings
3626 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3627 LIBPREF="lib"
3628 LIBSUF=".a"
3629 FULLNAME='$(NAME)$(BUILDSUF)'
3630 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3631 SLIBPREF="lib"
3632 SLIBSUF=".so"
3633 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3634 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3635 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3636 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3637 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3638 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3639 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3640
3641 asflags_filter=echo
3642 cflags_filter=echo
3643 ldflags_filter=echo
3644
3645 AS_C='-c'
3646 AS_O='-o $@'
3647 CC_C='-c'
3648 CC_E='-E -o $@'
3649 CC_O='-o $@'
3650 CXX_C='-c'
3651 CXX_O='-o $@'
3652 OBJCC_C='-c'
3653 OBJCC_E='-E -o $@'
3654 OBJCC_O='-o $@'
3655 X86ASM_O='-o $@'
3656 LD_O='-o $@'
3657 LD_LIB='-l%'
3658 LD_PATH='-L'
3659 HOSTCC_C='-c'
3660 HOSTCC_E='-E -o $@'
3661 HOSTCC_O='-o $@'
3662 HOSTLD_O='-o $@'
3663 NVCC_C='-c'
3664 NVCC_O='-o $@'
3665
3666 host_extralibs='-lm'
3667 host_cflags_filter=echo
3668 host_ldflags_filter=echo
3669
3670 target_path='$(CURDIR)'
3671
3672 # since the object filename is not given with the -MM flag, the compiler
3673 # is only able to print the basename, and we must add the path ourselves
3674 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3675 DEPFLAGS='-MM'
3676
3677 mkdir -p ffbuild
3678
3679 # find source path
3680 if test -f configure; then
3681     source_path=.
3682 else
3683     source_path=$(cd $(dirname "$0"); pwd)
3684     case "$source_path" in
3685         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3686     esac
3687     test -e "$source_path/config.h" &&
3688         die "Out of tree builds are impossible with config.h in source dir."
3689 fi
3690
3691 for v in "$@"; do
3692     r=${v#*=}
3693     l=${v%"$r"}
3694     r=$(sh_quote "$r")
3695     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3696 done
3697
3698 find_things_extern(){
3699     thing=$1
3700     pattern=$2
3701     file=$source_path/$3
3702     out=${4:-$thing}
3703     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3704 }
3705
3706 find_filters_extern(){
3707     file=$source_path/$1
3708     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3709     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3710 }
3711
3712 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3713 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3714 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3715 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3716 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3717 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3718 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3719 CODEC_LIST="
3720     $ENCODER_LIST
3721     $DECODER_LIST
3722 "
3723 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3724 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3725 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3726 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3727
3728 AVCODEC_COMPONENTS_LIST="
3729     $BSF_LIST
3730     $DECODER_LIST
3731     $ENCODER_LIST
3732     $HWACCEL_LIST
3733     $PARSER_LIST
3734 "
3735
3736 AVDEVICE_COMPONENTS_LIST="
3737     $INDEV_LIST
3738     $OUTDEV_LIST
3739 "
3740
3741 AVFILTER_COMPONENTS_LIST="
3742     $FILTER_LIST
3743 "
3744
3745 AVFORMAT_COMPONENTS_LIST="
3746     $DEMUXER_LIST
3747     $MUXER_LIST
3748     $PROTOCOL_LIST
3749 "
3750
3751 ALL_COMPONENTS="
3752     $AVCODEC_COMPONENTS_LIST
3753     $AVDEVICE_COMPONENTS_LIST
3754     $AVFILTER_COMPONENTS_LIST
3755     $AVFORMAT_COMPONENTS_LIST
3756 "
3757
3758 for n in $COMPONENT_LIST; do
3759     v=$(toupper ${n%s})_LIST
3760     eval enable \$$v
3761     eval ${n}_if_any="\$$v"
3762 done
3763
3764 enable $ARCH_EXT_LIST
3765
3766 die_unknown(){
3767     echo "Unknown option \"$1\"."
3768     echo "See $0 --help for available options."
3769     exit 1
3770 }
3771
3772 print_in_columns() {
3773     cols=$(expr $ncols / 24)
3774     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3775 }
3776
3777 show_list() {
3778     suffix=_$1
3779     shift
3780     echo $* | sed s/$suffix//g | print_in_columns
3781     exit 0
3782 }
3783
3784 rand_list(){
3785     IFS=', '
3786     set -- $*
3787     unset IFS
3788     for thing; do
3789         comp=${thing%:*}
3790         prob=${thing#$comp}
3791         prob=${prob#:}
3792         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3793         echo "prob ${prob:-0.5}"
3794         printf '%s\n' $comp
3795     done
3796 }
3797
3798 do_random(){
3799     action=$1
3800     shift
3801     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3802     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3803 }
3804
3805 for opt do
3806     optval="${opt#*=}"
3807     case "$opt" in
3808         --extra-ldflags=*)
3809             add_ldflags $optval
3810         ;;
3811         --extra-ldexeflags=*)
3812             add_ldexeflags $optval
3813         ;;
3814         --extra-ldsoflags=*)
3815             add_ldsoflags $optval
3816         ;;
3817         --extra-ldlibflags=*)
3818             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3819                  "removed in the future. Use --extra-ldsoflags instead."
3820             add_ldsoflags $optval
3821         ;;
3822         --extra-libs=*)
3823             add_extralibs $optval
3824         ;;
3825         --disable-devices)
3826             disable $INDEV_LIST $OUTDEV_LIST
3827         ;;
3828         --enable-debug=*)
3829             debuglevel="$optval"
3830         ;;
3831         --disable-programs)
3832             disable $PROGRAM_LIST
3833         ;;
3834         --disable-everything)
3835             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3836         ;;
3837         --disable-all)
3838             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3839             disable $LIBRARY_LIST $PROGRAM_LIST doc
3840             enable avutil
3841         ;;
3842         --enable-random|--disable-random)
3843             action=${opt%%-random}
3844             do_random ${action#--} $COMPONENT_LIST
3845         ;;
3846         --enable-random=*|--disable-random=*)
3847             action=${opt%%-random=*}
3848             do_random ${action#--} $optval
3849         ;;
3850         --enable-sdl)
3851             enable sdl2
3852         ;;
3853         --enable-*=*|--disable-*=*)
3854             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3855             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3856             eval list=\$$(toupper $thing)_LIST
3857             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3858             list=$(filter "$name" $list)
3859             [ "$list" = "" ] && warn "Option $opt did not match anything"
3860             $action $list
3861         ;;
3862         --enable-yasm|--disable-yasm)
3863             warn "The ${opt} option is only provided for compatibility and will be\n"\
3864                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3865             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3866         ;;
3867         --yasmexe=*)
3868             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3869                  "removed in the future. Use --x86asmexe instead."
3870             x86asmexe="$optval"
3871         ;;
3872         --enable-?*|--disable-?*)
3873             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3874             if is_in $option $COMPONENT_LIST; then
3875                 test $action = disable && action=unset
3876                 eval $action \$$(toupper ${option%s})_LIST
3877             elif is_in $option $CMDLINE_SELECT; then
3878                 $action $option
3879             else
3880                 die_unknown $opt
3881             fi
3882         ;;
3883         --list-*)
3884             NAME="${opt#--list-}"
3885             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3886             NAME=${NAME%s}
3887             eval show_list $NAME \$$(toupper $NAME)_LIST
3888         ;;
3889         --help|-h) show_help
3890         ;;
3891         --quiet|-q) quiet=yes
3892         ;;
3893         --fatal-warnings) enable fatal_warnings
3894         ;;
3895         --libfuzzer=*)
3896             libfuzzer_path="$optval"
3897         ;;
3898         *)
3899             optname="${opt%%=*}"
3900             optname="${optname#--}"
3901             optname=$(echo "$optname" | sed 's/-/_/g')
3902             if is_in $optname $CMDLINE_SET; then
3903                 eval $optname='$optval'
3904             elif is_in $optname $CMDLINE_APPEND; then
3905                 append $optname "$optval"
3906             else
3907                 die_unknown $opt
3908             fi
3909         ;;
3910     esac
3911 done
3912
3913 for e in $env; do
3914     eval "export $e"
3915 done
3916
3917 if disabled autodetect; then
3918
3919     # Unless iconv is explicitely disabled by the user, we still want to probe
3920     # for the iconv from the libc.
3921     disabled iconv || enable libc_iconv
3922
3923     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3924     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3925 fi
3926 # Mark specifically enabled, but normally autodetected libraries as requested.
3927 for lib in $AUTODETECT_LIBS; do
3928     enabled $lib && request $lib
3929 done
3930 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3931 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3932 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3933
3934 disabled logging && logfile=/dev/null
3935
3936 # command line configuration sanity checks
3937
3938 # we need to build at least one lib type
3939 if ! enabled_any static shared; then
3940     cat <<EOF
3941 At least one library type must be built.
3942 Specify --enable-static to build the static libraries or --enable-shared to
3943 build the shared libraries as well. To only build the shared libraries specify
3944 --disable-static in addition to --enable-shared.
3945 EOF
3946     exit 1
3947 fi
3948
3949 die_license_disabled() {
3950     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3951 }
3952
3953 die_license_disabled_gpl() {
3954     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3955 }
3956
3957 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3958 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3959
3960 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3961 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3962
3963 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3964
3965 if enabled nonfree; then
3966     license="nonfree and unredistributable"
3967 elif enabled gplv3; then
3968     license="GPL version 3 or later"
3969 elif enabled lgplv3; then
3970     license="LGPL version 3 or later"
3971 elif enabled gpl; then
3972     license="GPL version 2 or later"
3973 else
3974     license="LGPL version 2.1 or later"
3975 fi
3976
3977 enabled_all gnutls openssl &&
3978     die "GnuTLS and OpenSSL must not be enabled at the same time."
3979
3980 enabled_all gnutls mbedtls &&
3981     die "GnuTLS and mbedTLS must not be enabled at the same time."
3982
3983 enabled_all openssl mbedtls &&
3984     die "OpenSSL and mbedTLS must not be enabled at the same time."
3985
3986 # Disable all the library-specific components if the library itself
3987 # is disabled, see AVCODEC_LIST and following _LIST variables.
3988
3989 disable_components(){
3990     disabled ${1} && disable $(
3991         eval components="\$$(toupper ${1})_COMPONENTS"
3992         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3993     )
3994 }
3995
3996 map 'disable_components $v' $LIBRARY_LIST
3997
3998 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3999 set >> $logfile
4000
4001 test -n "$valgrind" && toolchain="valgrind-memcheck"
4002
4003 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4004     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4005     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4006 }
4007
4008 case "$toolchain" in
4009     *-asan)
4010         cc_default="${toolchain%-asan}"
4011         add_cflags  -fsanitize=address
4012         add_ldflags -fsanitize=address
4013     ;;
4014     *-msan)
4015         cc_default="${toolchain%-msan}"
4016         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4017         add_ldflags -fsanitize=memory
4018     ;;
4019     *-tsan)
4020         cc_default="${toolchain%-tsan}"
4021         add_cflags  -fsanitize=thread
4022         add_ldflags -fsanitize=thread
4023         case "$toolchain" in
4024             gcc-tsan)
4025                 add_cflags  -fPIC
4026                 add_ldflags -fPIC
4027                 ;;
4028         esac
4029     ;;
4030     *-usan)
4031         cc_default="${toolchain%-usan}"
4032         add_cflags  -fsanitize=undefined
4033         add_ldflags -fsanitize=undefined
4034     ;;
4035     valgrind-*)
4036         target_exec_default="valgrind"
4037         case "$toolchain" in
4038             valgrind-massif)
4039                 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"
4040                 ;;
4041             valgrind-memcheck)
4042                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4043                 ;;
4044         esac
4045     ;;
4046     msvc)
4047         # Check whether the current MSVC version needs the C99 converter.
4048         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4049         # support enough of C99 to build ffmpeg. Default to the new
4050         # behaviour if the regexp was unable to match anything, since this
4051         # successfully parses the version number of existing supported
4052         # versions that require the converter (MSVC 2010 and 2012).
4053         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4054         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4055             cc_default="cl"
4056             cxx_default="cl"
4057         else
4058             die "Unsupported MSVC version (2013 or newer required)"
4059         fi
4060         ld_default="$source_path/compat/windows/mslink"
4061         nm_default="dumpbin -symbols"
4062         ar_default="lib"
4063         case "$arch" in
4064         aarch64|arm64)
4065             as_default="armasm64"
4066             ;;
4067         arm*)
4068             as_default="armasm"
4069             ;;
4070         esac
4071         target_os_default="win32"
4072         # Use a relative path for TMPDIR. This makes sure all the
4073         # ffconf temp files are written with a relative path, avoiding
4074         # issues with msys/win32 path conversion for MSVC parameters
4075         # such as -Fo<file> or -out:<file>.
4076         TMPDIR=.
4077     ;;
4078     icl)
4079         cc_default="icl"
4080         ld_default="xilink"
4081         nm_default="dumpbin -symbols"
4082         ar_default="xilib"
4083         target_os_default="win32"
4084         TMPDIR=.
4085     ;;
4086     gcov)
4087         add_cflags  -fprofile-arcs -ftest-coverage
4088         add_ldflags -fprofile-arcs -ftest-coverage
4089     ;;
4090     llvm-cov)
4091         add_cflags -fprofile-arcs -ftest-coverage
4092         add_ldflags --coverage
4093     ;;
4094     hardened)
4095         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4096         add_cflags   -fno-strict-overflow -fstack-protector-all
4097         add_ldflags  -Wl,-z,relro -Wl,-z,now
4098         add_cflags   -fPIE
4099         add_ldexeflags -fPIE -pie
4100     ;;
4101     ?*)
4102         die "Unknown toolchain $toolchain"
4103     ;;
4104 esac
4105
4106 if test -n "$cross_prefix"; then
4107     test -n "$arch" && test -n "$target_os" ||
4108         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4109     enable cross_compile
4110 fi
4111
4112 ar_default="${cross_prefix}${ar_default}"
4113 cc_default="${cross_prefix}${cc_default}"
4114 cxx_default="${cross_prefix}${cxx_default}"
4115 nm_default="${cross_prefix}${nm_default}"
4116 pkg_config_default="${cross_prefix}${pkg_config_default}"
4117 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4118     ranlib_default="${cross_prefix}${ranlib_default} -D"
4119 else
4120     ranlib_default="${cross_prefix}${ranlib_default}"
4121 fi
4122 strip_default="${cross_prefix}${strip_default}"
4123 windres_default="${cross_prefix}${windres_default}"
4124
4125 sysinclude_default="${sysroot}/usr/include"
4126
4127 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4128     target_exec target_os x86asmexe nvcc
4129 enabled cross_compile || host_cc_default=$cc
4130 set_default host_cc
4131
4132 pkg_config_fail_message=""
4133 if ! $pkg_config --version >/dev/null 2>&1; then
4134     warn "$pkg_config not found, library detection may fail."
4135     pkg_config=false
4136 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4137     pkg_config_fail_message="
4138 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4139 fi
4140
4141 if test $doxygen != $doxygen_default && \
4142   ! $doxygen --version >/dev/null 2>&1; then
4143     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4144 fi
4145
4146 exesuf() {
4147     case $1 in
4148         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4149     esac
4150 }
4151
4152 EXESUF=$(exesuf $target_os)
4153 HOSTEXESUF=$(exesuf $host_os)
4154
4155 # set temporary file name
4156 : ${TMPDIR:=$TEMPDIR}
4157 : ${TMPDIR:=$TMP}
4158 : ${TMPDIR:=/tmp}
4159
4160 if [ -n "$tempprefix" ] ; then
4161     mktemp(){
4162         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4163         echo "$tmpname"
4164         mkdir "$tmpname"
4165     }
4166 elif ! test_cmd mktemp -u XXXXXX; then
4167     # simple replacement for missing mktemp
4168     # NOT SAFE FOR GENERAL USE
4169     mktemp(){
4170         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4171         echo "$tmpname"
4172         mkdir "$tmpname"
4173     }
4174 fi
4175
4176 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4177     die "Unable to create temporary directory in $TMPDIR."
4178
4179 tmpfile(){
4180     tmp="${FFTMPDIR}/test"$2
4181     (set -C; exec > $tmp) 2> /dev/null ||
4182         die "Unable to create temporary file in $FFTMPDIR."
4183     eval $1=$tmp
4184 }
4185
4186 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4187 trap 'exit 2' INT
4188
4189 tmpfile TMPASM .asm
4190 tmpfile TMPC   .c
4191 tmpfile TMPCPP .cpp
4192 tmpfile TMPE   $EXESUF
4193 tmpfile TMPH   .h
4194 tmpfile TMPM   .m
4195 tmpfile TMPO   .o
4196 tmpfile TMPS   .S
4197 tmpfile TMPSH  .sh
4198 tmpfile TMPV   .ver
4199
4200 unset -f mktemp
4201
4202 chmod +x $TMPE
4203
4204 # make sure we can execute files in $TMPDIR
4205 cat > $TMPSH 2>> $logfile <<EOF
4206 #! /bin/sh
4207 EOF
4208 chmod +x $TMPSH >> $logfile 2>&1
4209 if ! $TMPSH >> $logfile 2>&1; then
4210     cat <<EOF
4211 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4212 variable to another directory and make sure that it is not mounted noexec.
4213 EOF
4214     die "Sanity test failed."
4215 fi
4216
4217 armasm_flags(){
4218     for flag; do
4219         case $flag in
4220             # Filter out MSVC cl.exe options from cflags that shouldn't
4221             # be passed to gas-preprocessor
4222             -M[TD]*)                                            ;;
4223             *)                  echo $flag                      ;;
4224         esac
4225    done
4226 }
4227
4228 cparser_flags(){
4229     for flag; do
4230         case $flag in
4231             -Wno-switch)             echo -Wno-switch-enum ;;
4232             -Wno-format-zero-length) ;;
4233             -Wdisabled-optimization) ;;
4234             -Wno-pointer-sign)       echo -Wno-other ;;
4235             *)                       echo $flag ;;
4236         esac
4237     done
4238 }
4239
4240 msvc_common_flags(){
4241     for flag; do
4242         case $flag in
4243             # In addition to specifying certain flags under the compiler
4244             # specific filters, they must be specified here as well or else the
4245             # generic catch all at the bottom will print the original flag.
4246             -Wall)                ;;
4247             -Wextra)              ;;
4248             -std=c99)             ;;
4249             # Common flags
4250             -fomit-frame-pointer) ;;
4251             -g)                   echo -Z7 ;;
4252             -fno-math-errno)      ;;
4253             -fno-common)          ;;
4254             -fno-signed-zeros)    ;;
4255             -fPIC)                ;;
4256             -mthumb)              ;;
4257             -march=*)             ;;
4258             -lz)                  echo zlib.lib ;;
4259             -lx264)               echo libx264.lib ;;
4260             -lstdc++)             ;;
4261             -l*)                  echo ${flag#-l}.lib ;;
4262             -LARGEADDRESSAWARE)   echo $flag ;;
4263             -L*)                  echo -libpath:${flag#-L} ;;
4264             *)                    echo $flag ;;
4265         esac
4266     done
4267 }
4268
4269 msvc_flags(){
4270     msvc_common_flags "$@"
4271     for flag; do
4272         case $flag in
4273             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4274                                        -wd4554 ;;
4275             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4276                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4277                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4278                                        -wd4307 \
4279                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4280         esac
4281     done
4282 }
4283
4284 icl_flags(){
4285     msvc_common_flags "$@"
4286     for flag; do
4287         case $flag in
4288             # Despite what Intel's documentation says -Wall, which is supported
4289             # on Windows, does enable remarks so disable them here.
4290             -Wall)                echo $flag -Qdiag-disable:remark ;;
4291             -std=c99)             echo -Qstd=c99 ;;
4292             -flto)                echo -ipo ;;
4293         esac
4294     done
4295 }
4296
4297 icc_flags(){
4298     for flag; do
4299         case $flag in
4300             -flto)                echo -ipo ;;
4301             *)                    echo $flag ;;
4302         esac
4303     done
4304 }
4305
4306 suncc_flags(){
4307     for flag; do
4308         case $flag in
4309             -march=*|-mcpu=*)
4310                 case "${flag#*=}" in
4311                     native)                   echo -xtarget=native       ;;
4312                     v9|niagara)               echo -xarch=sparc          ;;
4313                     ultrasparc)               echo -xarch=sparcvis       ;;
4314                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4315                     i586|pentium)             echo -xchip=pentium        ;;
4316                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4317                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4318                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4319                     pentium4*)          echo -xtarget=pentium4           ;;
4320                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4321                     *-sse3)             echo -xarch=sse3                 ;;
4322                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4323                     bonnell)                   echo -xarch=ssse3         ;;
4324                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4325                     westmere)                  echo -xtarget=westmere    ;;
4326                     silvermont)                echo -xarch=sse4_2        ;;
4327                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4328                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4329                                                echo -xarch=avx           ;;
4330                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4331                     btver1)                    echo -xarch=amdsse4a      ;;
4332                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4333                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4334                     k8|opteron|athlon64|athlon-fx)
4335                                                echo -xarch=sse2a         ;;
4336                     athlon*)                   echo -xarch=pentium_proa  ;;
4337                 esac
4338                 ;;
4339             -std=c99)             echo -xc99              ;;
4340             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4341             -fPIC)                echo -KPIC -xcode=pic32 ;;
4342             -W*,*)                echo $flag              ;;
4343             -f*-*|-W*|-mimpure-text)                      ;;
4344             -shared)              echo -G                 ;;
4345             *)                    echo $flag              ;;
4346         esac
4347     done
4348 }
4349
4350 probe_cc(){
4351     pfx=$1
4352     _cc=$2
4353     first=$3
4354
4355     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4356     unset _ld_o _ldflags _ld_lib _ld_path
4357     unset _depflags _DEPCMD _DEPFLAGS
4358     _flags_filter=echo
4359
4360     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4361         true # no-op to avoid reading stdin in following checks
4362     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4363         _type=llvm_gcc
4364         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4365         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4366         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4367         _cflags_speed='-O3'
4368         _cflags_size='-Os'
4369     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4370         _type=gcc
4371         gcc_version=$($_cc --version | head -n1)
4372         gcc_basever=$($_cc -dumpversion)
4373         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4374         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4375         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4376         case $gcc_basever in
4377             2) ;;
4378             2.*) ;;
4379             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4380         esac
4381         if [ "$first" = true ]; then
4382             case $gcc_basever in
4383                 4.2*)
4384                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4385             esac
4386         fi
4387         _cflags_speed='-O3'
4388         _cflags_size='-Os'
4389     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4390         _type=icc
4391         _ident=$($_cc --version | head -n1)
4392         _depflags='-MMD'
4393         _cflags_speed='-O3'
4394         _cflags_size='-Os'
4395         _cflags_noopt='-O1'
4396         _flags_filter=icc_flags
4397     elif $_cc -v 2>&1 | grep -q xlc; then
4398         _type=xlc
4399         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4400         _cflags_speed='-O5'
4401         _cflags_size='-O5 -qcompact'
4402     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4403         test -d "$sysroot" || die "No valid sysroot specified."
4404         _type=armcc
4405         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4406         armcc_conf="$PWD/armcc.conf"
4407         $_cc --arm_linux_configure                 \
4408              --arm_linux_config_file="$armcc_conf" \
4409              --configure_sysroot="$sysroot"        \
4410              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4411              die "Error creating armcc configuration file."
4412         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4413         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4414         as_default="${cross_prefix}gcc"
4415         _depflags='-MMD'
4416         _cflags_speed='-O3'
4417         _cflags_size='-Os'
4418     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4419         _type=clang
4420         _ident=$($_cc --version 2>/dev/null | head -n1)
4421         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4422         _cflags_speed='-O3'
4423         _cflags_size='-Oz'
4424     elif $_cc -V 2>&1 | grep -q Sun; then
4425         _type=suncc
4426         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4427         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4428         _DEPFLAGS='-xM1 -xc99'
4429         _ldflags='-std=c99'
4430         _cflags_speed='-O5'
4431         _cflags_size='-O5 -xspace'
4432         _flags_filter=suncc_flags
4433     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4434         _type=pathscale
4435         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4436         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4437         _cflags_speed='-O2'
4438         _cflags_size='-Os'
4439         _flags_filter='filter_out -Wdisabled-optimization'
4440     elif $_cc -v 2>&1 | grep -q Open64; then
4441         _type=open64
4442         _ident=$($_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|-Wtype-limits|-fno-signed-zeros'
4447     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4448         _type=armasm
4449         _ident=$($_cc | head -n1)
4450         # 4509: "This form of conditional instruction is deprecated"
4451         _flags="-nologo -ignore 4509"
4452         _flags_filter=armasm_flags
4453     elif $_cc 2>&1 | grep -q Intel; then
4454         _type=icl
4455         _ident=$($_cc 2>&1 | head -n1)
4456         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4457         # Not only is O3 broken on 13.x+ but it is slower on all previous
4458         # versions (tested) as well.
4459         _cflags_speed="-O2"
4460         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4461         if $_cc 2>&1 | grep -q Linker; then
4462             _ld_o='-out:$@'
4463         else
4464             _ld_o='-Fe$@'
4465         fi
4466         _cc_o='-Fo$@'
4467         _cc_e='-P'
4468         _flags_filter=icl_flags
4469         _ld_lib='lib%.a'
4470         _ld_path='-libpath:'
4471         # -Qdiag-error to make icl error when seeing certain unknown arguments
4472         _flags='-nologo -Qdiag-error:4044,10157'
4473         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4474         # with MSVC which enables it by default.
4475         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4476         disable stripping
4477     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4478         # lld can emulate multiple different linkers; in ms link.exe mode,
4479         # the -? parameter gives the help output which contains an identifyable
4480         # string, while it gives an error in other modes.
4481         _type=lld-link
4482         # The link.exe mode doesn't have a switch for getting the version,
4483         # but we can force it back to gnu mode and get the version from there.
4484         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4485         _ld_o='-out:$@'
4486         _flags_filter=msvc_flags
4487         _ld_lib='lib%.a'
4488         _ld_path='-libpath:'
4489     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4490         _type=msvc
4491         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4492         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4493         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4494         _cflags_speed="-O2"
4495         _cflags_size="-O1"
4496         _cflags_noopt="-O1"
4497         if $_cc -nologo- 2>&1 | grep -q Linker; then
4498             _ld_o='-out:$@'
4499         else
4500             _ld_o='-Fe$@'
4501         fi
4502         _cc_o='-Fo$@'
4503         _cc_e='-P -Fi$@'
4504         _flags_filter=msvc_flags
4505         _ld_lib='lib%.a'
4506         _ld_path='-libpath:'
4507         _flags='-nologo'
4508         disable stripping
4509     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4510         _type=cparser
4511         _ident=$($_cc --version | head -n1)
4512         _depflags='-MMD'
4513         _cflags_speed='-O4'
4514         _cflags_size='-O2'
4515         _flags_filter=cparser_flags
4516     fi
4517
4518     eval ${pfx}_type=\$_type
4519     eval ${pfx}_ident=\$_ident
4520 }
4521
4522 set_ccvars(){
4523     eval ${1}_C=\${_cc_c-\${${1}_C}}
4524     eval ${1}_E=\${_cc_e-\${${1}_E}}
4525     eval ${1}_O=\${_cc_o-\${${1}_O}}
4526
4527     if [ -n "$_depflags" ]; then
4528         eval ${1}_DEPFLAGS=\$_depflags
4529     else
4530         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4531         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4532         eval DEP${1}FLAGS=\$_flags
4533     fi
4534 }
4535
4536 probe_cc cc "$cc" "true"
4537 cflags_filter=$_flags_filter
4538 cflags_speed=$_cflags_speed
4539 cflags_size=$_cflags_size
4540 cflags_noopt=$_cflags_noopt
4541 add_cflags $_flags $_cflags
4542 cc_ldflags=$_ldflags
4543 set_ccvars CC
4544 set_ccvars CXX
4545
4546 probe_cc hostcc "$host_cc"
4547 host_cflags_filter=$_flags_filter
4548 host_cflags_speed=$_cflags_speed
4549 add_host_cflags  $_flags $_cflags
4550 set_ccvars HOSTCC
4551
4552 test -n "$cc_type" && enable $cc_type ||
4553     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4554
4555 : ${as_default:=$cc}
4556 : ${objcc_default:=$cc}
4557 : ${dep_cc_default:=$cc}
4558 : ${ld_default:=$cc}
4559 : ${host_ld_default:=$host_cc}
4560 set_default ar as objcc dep_cc ld ln_s host_ld windres
4561
4562 probe_cc as "$as"
4563 asflags_filter=$_flags_filter
4564 add_asflags $_flags $_cflags
4565 set_ccvars AS
4566
4567 probe_cc objcc "$objcc"
4568 objcflags_filter=$_flags_filter
4569 add_objcflags $_flags $_cflags
4570 set_ccvars OBJC
4571
4572 probe_cc ld "$ld"
4573 ldflags_filter=$_flags_filter
4574 add_ldflags $_flags $_ldflags
4575 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4576 LD_O=${_ld_o-$LD_O}
4577 LD_LIB=${_ld_lib-$LD_LIB}
4578 LD_PATH=${_ld_path-$LD_PATH}
4579
4580 probe_cc hostld "$host_ld"
4581 host_ldflags_filter=$_flags_filter
4582 add_host_ldflags $_flags $_ldflags
4583 HOSTLD_O=${_ld_o-$HOSTLD_O}
4584
4585 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4586     probe_cc depcc "$dep_cc"
4587     CCDEP=${_DEPCMD:-$DEPCMD}
4588     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4589     DEPCCFLAGS=$_flags
4590 fi
4591
4592 if $ar 2>&1 | grep -q Microsoft; then
4593     arflags="-nologo"
4594     ar_o='-out:$@'
4595 elif $ar 2>&1 | grep -q "\[D\] "; then
4596     arflags="rcD"
4597     ar_o='$@'
4598 else
4599     arflags="rc"
4600     ar_o='$@'
4601 fi
4602
4603 add_cflags $extra_cflags
4604 add_cxxflags $extra_cxxflags
4605 add_objcflags $extra_objcflags
4606 add_asflags $extra_cflags
4607
4608 if test -n "$sysroot"; then
4609     case "$cc_type" in
4610         gcc|llvm_gcc|clang)
4611             add_cppflags --sysroot="$sysroot"
4612             add_ldflags --sysroot="$sysroot"
4613         ;;
4614     esac
4615 fi
4616
4617 if test "$cpu" = host; then
4618     enabled cross_compile &&
4619         die "--cpu=host makes no sense when cross-compiling."
4620
4621     case "$cc_type" in
4622         gcc|llvm_gcc)
4623             check_native(){
4624                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4625                 sed -n "/cc1.*$1=/{
4626                             s/.*$1=\\([^ ]*\\).*/\\1/
4627                             p
4628                             q
4629                         }" $TMPE
4630             }
4631             cpu=$(check_native -march || check_native -mcpu)
4632         ;;
4633         clang)
4634             check_native(){
4635                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4636                 sed -n "/cc1.*-target-cpu /{
4637                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4638                             p
4639                             q
4640                         }" $TMPE
4641             }
4642             cpu=$(check_native -march)
4643         ;;
4644     esac
4645
4646     test "${cpu:-host}" = host &&
4647         die "--cpu=host not supported with compiler $cc"
4648 fi
4649
4650 # Deal with common $arch aliases
4651 case "$arch" in
4652     aarch64|arm64)
4653         arch="aarch64"
4654     ;;
4655     arm*|iPad*|iPhone*)
4656         arch="arm"
4657     ;;
4658     mips*|IP*)
4659         case "$arch" in
4660         *el)
4661             add_cppflags -EL
4662             add_ldflags -EL
4663         ;;
4664         *eb)
4665             add_cppflags -EB
4666             add_ldflags -EB
4667         ;;
4668         esac
4669         arch="mips"
4670     ;;
4671     parisc*|hppa*)
4672         arch="parisc"
4673     ;;
4674     "Power Macintosh"|ppc*|powerpc*)
4675         arch="ppc"
4676     ;;
4677     s390|s390x)
4678         arch="s390"
4679     ;;
4680     sh4|sh)
4681         arch="sh4"
4682     ;;
4683     sun4*|sparc*)
4684         arch="sparc"
4685     ;;
4686     tilegx|tile-gx)
4687         arch="tilegx"
4688     ;;
4689     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4690         arch="x86"
4691     ;;
4692 esac
4693
4694 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4695 enable $arch
4696
4697 # Add processor-specific flags
4698 if enabled aarch64; then
4699
4700     case $cpu in
4701         armv*)
4702             cpuflags="-march=$cpu"
4703         ;;
4704         *)
4705             cpuflags="-mcpu=$cpu"
4706         ;;
4707     esac
4708
4709 elif enabled alpha; then
4710
4711     cpuflags="-mcpu=$cpu"
4712
4713 elif enabled arm; then
4714
4715     check_arm_arch() {
4716         test_cpp_condition stddef.h \
4717             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4718             $cpuflags
4719     }
4720
4721     probe_arm_arch() {
4722         if   check_arm_arch 4;        then echo armv4
4723         elif check_arm_arch 4T;       then echo armv4t
4724         elif check_arm_arch 5;        then echo armv5
4725         elif check_arm_arch 5E;       then echo armv5e
4726         elif check_arm_arch 5T;       then echo armv5t
4727         elif check_arm_arch 5TE;      then echo armv5te
4728         elif check_arm_arch 5TEJ;     then echo armv5te
4729         elif check_arm_arch 6;        then echo armv6
4730         elif check_arm_arch 6J;       then echo armv6j
4731         elif check_arm_arch 6K;       then echo armv6k
4732         elif check_arm_arch 6Z;       then echo armv6z
4733         elif check_arm_arch 6KZ;      then echo armv6zk
4734         elif check_arm_arch 6ZK;      then echo armv6zk
4735         elif check_arm_arch 6T2;      then echo armv6t2
4736         elif check_arm_arch 7;        then echo armv7
4737         elif check_arm_arch 7A  7_A;  then echo armv7-a
4738         elif check_arm_arch 7S;       then echo armv7-a
4739         elif check_arm_arch 7R  7_R;  then echo armv7-r
4740         elif check_arm_arch 7M  7_M;  then echo armv7-m
4741         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4742         elif check_arm_arch 8A  8_A;  then echo armv8-a
4743         fi
4744     }
4745
4746     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4747
4748     case $cpu in
4749         armv*)
4750             cpuflags="-march=$cpu"
4751             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4752         ;;
4753         *)
4754             cpuflags="-mcpu=$cpu"
4755             case $cpu in
4756                 cortex-a*)                               subarch=armv7a  ;;
4757                 cortex-r*)                               subarch=armv7r  ;;
4758                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4759                 arm11*)                                  subarch=armv6   ;;
4760                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4761                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4762                 *)                             subarch=$(probe_arm_arch) ;;
4763             esac
4764         ;;
4765     esac
4766
4767     case "$subarch" in
4768         armv5t*)    enable fast_clz                ;;
4769         armv[6-8]*)
4770             enable fast_clz
4771             disabled fast_unaligned || enable fast_unaligned
4772             ;;
4773     esac
4774
4775 elif enabled avr32; then
4776
4777     case $cpu in
4778         ap7[02]0[0-2])
4779             subarch="avr32_ap"
4780             cpuflags="-mpart=$cpu"
4781         ;;
4782         ap)
4783             subarch="avr32_ap"
4784             cpuflags="-march=$cpu"
4785         ;;
4786         uc3[ab]*)
4787             subarch="avr32_uc"
4788             cpuflags="-mcpu=$cpu"
4789         ;;
4790         uc)
4791             subarch="avr32_uc"
4792             cpuflags="-march=$cpu"
4793         ;;
4794     esac
4795
4796 elif enabled bfin; then
4797
4798     cpuflags="-mcpu=$cpu"
4799
4800 elif enabled mips; then
4801
4802     cpuflags="-march=$cpu"
4803
4804     if [ "$cpu" != "generic" ]; then
4805         disable mips32r2
4806         disable mips32r5
4807         disable mips64r2
4808         disable mips32r6
4809         disable mips64r6
4810         disable loongson2
4811         disable loongson3
4812
4813         case $cpu in
4814             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4815                 enable mips32r2
4816                 disable msa
4817             ;;
4818             p5600|i6400|p6600)
4819                 disable mipsdsp
4820                 disable mipsdspr2
4821             ;;
4822             loongson*)
4823                 enable loongson2
4824                 enable loongson3
4825                 enable local_aligned
4826                 enable simd_align_16
4827                 enable fast_64bit
4828                 enable fast_clz
4829                 enable fast_cmov
4830                 enable fast_unaligned
4831                 disable aligned_stack
4832                 disable mipsfpu
4833                 disable mipsdsp
4834                 disable mipsdspr2
4835                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4836                 if [ $cc == gcc ]; then
4837                     gcc_version=$(gcc -dumpversion)
4838                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4839                         expensive_optimization_flag=""
4840                     else
4841                         expensive_optimization_flag="-fno-expensive-optimizations"
4842                     fi
4843                 fi
4844                 case $cpu in
4845                     loongson3*)
4846                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4847                     ;;
4848                     loongson2e)
4849                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4850                     ;;
4851                     loongson2f)
4852                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4853                     ;;
4854                 esac
4855             ;;
4856             *)
4857                 # Unknown CPU. Disable everything.
4858                 warn "unknown CPU. Disabling all MIPS optimizations."
4859                 disable mipsfpu
4860                 disable mipsdsp
4861                 disable mipsdspr2
4862                 disable msa
4863                 disable mmi
4864             ;;
4865         esac
4866
4867         case $cpu in
4868             24kc)
4869                 disable mipsfpu
4870                 disable mipsdsp
4871                 disable mipsdspr2
4872             ;;
4873             24kf*)
4874                 disable mipsdsp
4875                 disable mipsdspr2
4876             ;;
4877             24kec|34kc|1004kc)
4878                 disable mipsfpu
4879                 disable mipsdspr2
4880             ;;
4881             24kef*|34kf*|1004kf*)
4882                 disable mipsdspr2
4883             ;;
4884             74kc)
4885                 disable mipsfpu
4886             ;;
4887             p5600)
4888                 enable mips32r5
4889                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4890             ;;
4891             i6400)
4892                 enable mips64r6
4893                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4894             ;;
4895             p6600)
4896                 enable mips64r6
4897                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4898             ;;
4899         esac
4900     else
4901         # We do not disable anything. Is up to the user to disable the unwanted features.
4902         warn 'generic cpu selected'
4903     fi
4904
4905 elif enabled ppc; then
4906
4907     disable ldbrx
4908
4909     case $(tolower $cpu) in
4910         601|ppc601|powerpc601)
4911             cpuflags="-mcpu=601"
4912             disable altivec
4913         ;;
4914         603*|ppc603*|powerpc603*)
4915             cpuflags="-mcpu=603"
4916             disable altivec
4917         ;;
4918         604*|ppc604*|powerpc604*)
4919             cpuflags="-mcpu=604"
4920             disable altivec
4921         ;;
4922         g3|75*|ppc75*|powerpc75*)
4923             cpuflags="-mcpu=750"
4924             disable altivec
4925         ;;
4926         g4|745*|ppc745*|powerpc745*)
4927             cpuflags="-mcpu=7450"
4928             disable vsx
4929         ;;
4930         74*|ppc74*|powerpc74*)
4931             cpuflags="-mcpu=7400"
4932             disable vsx
4933         ;;
4934         g5|970|ppc970|powerpc970)
4935             cpuflags="-mcpu=970"
4936             disable vsx
4937         ;;
4938         power[3-6]*)
4939             cpuflags="-mcpu=$cpu"
4940             disable vsx
4941         ;;
4942         power[7-8]*)
4943             cpuflags="-mcpu=$cpu"
4944         ;;
4945         cell)
4946             cpuflags="-mcpu=cell"
4947             enable ldbrx
4948             disable vsx
4949         ;;
4950         e500mc)
4951             cpuflags="-mcpu=e500mc"
4952             disable altivec
4953         ;;
4954         e500v2)
4955             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4956             disable altivec
4957             disable dcbzl
4958         ;;
4959         e500)
4960             cpuflags="-mcpu=8540 -mhard-float"
4961             disable altivec
4962             disable dcbzl
4963         ;;
4964     esac
4965
4966 elif enabled sparc; then
4967
4968     case $cpu in
4969         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4970             cpuflags="-mcpu=$cpu"
4971         ;;
4972         ultrasparc*|niagara[234])
4973             cpuflags="-mcpu=$cpu"
4974         ;;
4975     esac
4976
4977 elif enabled x86; then
4978
4979     case $cpu in
4980         i[345]86|pentium)
4981             cpuflags="-march=$cpu"
4982             disable i686
4983             disable mmx
4984         ;;
4985         # targets that do NOT support nopl and conditional mov (cmov)
4986         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4987             cpuflags="-march=$cpu"
4988             disable i686
4989         ;;
4990         # targets that do support nopl and conditional mov (cmov)
4991         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4992         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4993         |amdfam10|barcelona|b[dt]ver*|znver*)
4994             cpuflags="-march=$cpu"
4995             enable i686
4996             enable fast_cmov
4997         ;;
4998         # targets that do support conditional mov but on which it's slow
4999         pentium4|pentium4m|prescott|nocona)
5000             cpuflags="-march=$cpu"
5001             enable i686
5002             disable fast_cmov
5003         ;;
5004     esac
5005
5006 fi
5007
5008 if [ "$cpu" != generic ]; then
5009     add_cflags  $cpuflags
5010     add_asflags $cpuflags
5011     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5012 fi
5013
5014 # compiler sanity check
5015 test_exec <<EOF
5016 int main(void){ return 0; }
5017 EOF
5018 if test "$?" != 0; then
5019     echo "$cc is unable to create an executable file."
5020     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5021         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5022         echo "Only do this if you know what cross compiling means."
5023     fi
5024     die "C compiler test failed."
5025 fi
5026
5027 add_cppflags -D_ISOC99_SOURCE
5028 add_cxxflags -D__STDC_CONSTANT_MACROS
5029 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5030
5031 # some compilers silently accept -std=c11, so we also need to check that the
5032 # version macro is defined properly
5033 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5034     add_cflags -std=c11 ||
5035     check_cflags -std=c99
5036
5037 check_cppflags -D_FILE_OFFSET_BITS=64
5038 check_cppflags -D_LARGEFILE_SOURCE
5039
5040 add_host_cppflags -D_ISOC99_SOURCE
5041 check_host_cflags -std=c99
5042 check_host_cflags -Wall
5043 check_host_cflags $host_cflags_speed
5044
5045 check_64bit(){
5046     arch32=$1
5047     arch64=$2
5048     expr=${3:-'sizeof(void *) > 4'}
5049     test_code cc "" "int test[2*($expr) - 1]" &&
5050         subarch=$arch64 || subarch=$arch32
5051     enable $subarch
5052 }
5053
5054 case "$arch" in
5055     aarch64|alpha|ia64)
5056         enabled shared && enable_weak pic
5057     ;;
5058     mips)
5059         check_64bit mips mips64 '_MIPS_SIM > 1'
5060         enabled shared && enable_weak pic
5061     ;;
5062     parisc)
5063         check_64bit parisc parisc64
5064         enabled shared && enable_weak pic
5065     ;;
5066     ppc)
5067         check_64bit ppc ppc64
5068         enabled shared && enable_weak pic
5069     ;;
5070     s390)
5071         check_64bit s390 s390x
5072         enabled shared && enable_weak pic
5073     ;;
5074     sparc)
5075         check_64bit sparc sparc64
5076         enabled shared && enable_weak pic
5077     ;;
5078     x86)
5079         check_64bit x86_32 x86_64
5080         # Treat x32 as x64 for now. Note it also needs pic if shared
5081         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5082             subarch=x86_64 && enable x86_64 && disable x86_32
5083         if enabled x86_64; then
5084             enabled shared && enable_weak pic
5085             objformat=elf64
5086         fi
5087     ;;
5088 esac
5089
5090 # OS specific
5091 case $target_os in
5092     aix)
5093         SHFLAGS=-shared
5094         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5095         enabled shared && add_ldflags -Wl,-brtl
5096         arflags='-Xany -r -c'
5097         striptype=""
5098         ;;
5099     android)
5100         disable symver
5101         enable section_data_rel_ro
5102         add_cflags -fPIE
5103         add_ldexeflags -fPIE -pie
5104         SLIB_INSTALL_NAME='$(SLIBNAME)'
5105         SLIB_INSTALL_LINKS=
5106         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5107         ;;
5108     haiku)
5109         prefix_default="/boot/common"
5110         network_extralibs="-lnetwork"
5111         host_extralibs=
5112         ;;
5113     sunos)
5114         SHFLAGS='-shared -Wl,-h,$$(@F)'
5115         enabled x86 && append SHFLAGS -mimpure-text
5116         network_extralibs="-lsocket -lnsl"
5117         add_cppflags -D__EXTENSIONS__
5118         # When using suncc to build, the Solaris linker will mark
5119         # an executable with each instruction set encountered by
5120         # the Solaris assembler.  As our libraries contain their own
5121         # guards for processor-specific code, instead suppress
5122         # generation of the HWCAPS ELF section on Solaris x86 only.
5123         enabled_all suncc x86 &&
5124             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5125             add_ldflags -Wl,-M,mapfile
5126         nm_default='nm -P -g'
5127         version_script='-M'
5128         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5129         ;;
5130     netbsd)
5131         disable symver
5132         oss_indev_extralibs="-lossaudio"
5133         oss_outdev_extralibs="-lossaudio"
5134         enabled gcc || check_ldflags -Wl,-zmuldefs
5135         ;;
5136     openbsd|bitrig)
5137         disable symver
5138         striptype=""
5139         SHFLAGS='-shared'
5140         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5141         SLIB_INSTALL_LINKS=
5142         oss_indev_extralibs="-lossaudio"
5143         oss_outdev_extralibs="-lossaudio"
5144         ;;
5145     dragonfly)
5146         disable symver
5147         ;;
5148     freebsd)
5149         ;;
5150     bsd/os)
5151         add_extralibs -lpoll -lgnugetopt
5152         strip="strip -d"
5153         ;;
5154     darwin)
5155         enabled ppc && add_asflags -force_cpusubtype_ALL
5156         install_name_dir_default='$(SHLIBDIR)'
5157         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5158         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5159         strip="${strip} -x"
5160         add_ldflags -Wl,-dynamic,-search_paths_first
5161         check_cflags -Werror=partial-availability
5162         SLIBSUF=".dylib"
5163         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5164         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5165         enabled x86_64 && objformat="macho64" || objformat="macho32"
5166         enabled_any pic shared x86_64 ||
5167             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5168         check_headers dispatch/dispatch.h &&
5169             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5170         if test -n "$sysroot"; then
5171             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5172             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5173         fi
5174         version_script='-exported_symbols_list'
5175         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5176         ;;
5177     msys*)
5178         die "Native MSYS builds are discouraged, please use the MINGW environment."
5179         ;;
5180     mingw32*|mingw64*)
5181         target_os=mingw32
5182         LIBTARGET=i386
5183         if enabled x86_64; then
5184             LIBTARGET="i386:x86-64"
5185         elif enabled arm; then
5186             LIBTARGET="arm"
5187         elif enabled aarch64; then
5188             LIBTARGET="arm64"
5189         fi
5190         if enabled shared; then
5191             # Cannot build both shared and static libs when using dllimport.
5192             disable static
5193         fi
5194         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5195         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5196         shlibdir_default="$bindir_default"
5197         SLIBPREF=""
5198         SLIBSUF=".dll"
5199         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5200         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5201         if test_cmd lib.exe -list; then
5202             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5203             if enabled x86_64; then
5204                 LIBTARGET=x64
5205             fi
5206         else
5207             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5208         fi
5209         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5210         SLIB_INSTALL_LINKS=
5211         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5212         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5213         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5214         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5215         enabled x86_64 && objformat="win64" || objformat="win32"
5216         dlltool="${cross_prefix}dlltool"
5217         ranlib=:
5218         enable dos_paths
5219         check_ldflags -Wl,--nxcompat,--dynamicbase
5220         # Lets work around some stupidity in binutils.
5221         # ld will strip relocations from executables even though we need them
5222         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5223         # however ld then forgets what the entry point should be (oops) so we
5224         # have to manually (re)set it.
5225         if enabled x86_32; then
5226             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5227         elif enabled x86_64; then
5228             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5229             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5230             # Set image base >4GB for extra entropy with HEASLR
5231             add_ldexeflags -Wl,--image-base,0x140000000
5232             append SHFLAGS -Wl,--image-base,0x180000000
5233         fi
5234         ;;
5235     win32|win64)
5236         disable symver
5237         if enabled shared; then
5238             # Link to the import library instead of the normal static library
5239             # for shared libs.
5240             LD_LIB='%.lib'
5241             # Cannot build both shared and static libs with MSVC or icl.
5242             disable static
5243         fi
5244         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5245         shlibdir_default="$bindir_default"
5246         SLIBPREF=""
5247         SLIBSUF=".dll"
5248         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5249         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5250         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5251         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5252         SLIB_INSTALL_LINKS=
5253         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5254         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5255         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5256         enabled x86_64 && objformat="win64" || objformat="win32"
5257         ranlib=:
5258         enable dos_paths
5259         ;;
5260     cygwin*)
5261         target_os=cygwin
5262         shlibdir_default="$bindir_default"
5263         SLIBPREF="cyg"
5264         SLIBSUF=".dll"
5265         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5266         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5267         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5268         SLIB_INSTALL_LINKS=
5269         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5270         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5271         enabled x86_64 && objformat="win64" || objformat="win32"
5272         enable dos_paths
5273         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5274         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5275         ;;
5276     *-dos|freedos|opendos)
5277         network_extralibs="-lsocket"
5278         objformat="coff"
5279         enable dos_paths
5280         add_cppflags -U__STRICT_ANSI__
5281         ;;
5282     linux)
5283         enable section_data_rel_ro
5284         enabled_any arm aarch64 && enable_weak linux_perf
5285         ;;
5286     irix*)
5287         target_os=irix
5288         ranlib="echo ignoring ranlib"
5289         ;;
5290     os/2*)
5291         strip="lxlite -CS"
5292         striptype=""
5293         objformat="aout"
5294         add_cppflags -D_GNU_SOURCE
5295         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5296         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5297         LIBSUF="_s.a"
5298         SLIBPREF=""
5299         SLIBSUF=".dll"
5300         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5301         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5302         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5303             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5304             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5305             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5306             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5307         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5308             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5309         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5310         SLIB_INSTALL_LINKS=
5311         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5312         enable dos_paths
5313         enable_weak os2threads
5314         ;;
5315     gnu/kfreebsd)
5316         add_cppflags -D_BSD_SOURCE
5317         ;;
5318     gnu)
5319         ;;
5320     qnx)
5321         add_cppflags -D_QNX_SOURCE
5322         network_extralibs="-lsocket"
5323         ;;
5324     symbian)
5325         SLIBSUF=".dll"
5326         enable dos_paths
5327         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5328         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5329         add_ldflags -Wl,--target1-abs,--no-undefined \
5330                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5331                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5332         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5333                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5334                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5335         ;;
5336     minix)
5337         ;;
5338     none)
5339         ;;
5340     *)
5341         die "Unknown OS '$target_os'."
5342         ;;
5343 esac
5344
5345 # test if creating links works
5346 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5347 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5348 mkdir "$link_dest"
5349 $ln_s "$link_dest" "$link_name"
5350 touch "$link_dest/test_file"
5351 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5352     # create link to source path
5353     [ -e src ] && rm src
5354     $ln_s "$source_path" src
5355     source_link=src
5356 else
5357     # creating directory links doesn't work
5358     # fall back to using the full source path
5359     source_link="$source_path"
5360 fi
5361 # cleanup
5362 rm -r "$link_dest"
5363 rm -r "$link_name"
5364
5365 # determine libc flavour
5366
5367 probe_libc(){
5368     pfx=$1
5369     pfx_no_=${pfx%_}
5370     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5371     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5372         eval ${pfx}libc_type=uclibc
5373         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5374     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5375         eval ${pfx}libc_type=glibc
5376         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5377     # MinGW headers can be installed on Cygwin, so check for newlib first.
5378     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5379         eval ${pfx}libc_type=newlib
5380         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5381     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5382     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5383         eval ${pfx}libc_type=mingw64
5384         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5385             add_compat msvcrt/snprintf.o
5386             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5387         fi
5388         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5389         eval test \$${pfx_no_}cc_type = "gcc" &&
5390             add_${pfx}cppflags -D__printf__=__gnu_printf__
5391         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5392             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5393     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5394          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5395         eval ${pfx}libc_type=mingw32
5396         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5397             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5398             die "ERROR: MinGW32 runtime version must be >= 3.15."
5399         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5400         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5401             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5402         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5403             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5404         eval test \$${pfx_no_}cc_type = "gcc" &&
5405             add_${pfx}cppflags -D__printf__=__gnu_printf__
5406     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5407         eval ${pfx}libc_type=msvcrt
5408         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5409             if [ "$pfx" = host_ ]; then
5410                 add_host_cppflags -Dsnprintf=_snprintf
5411             else
5412                 add_compat strtod.o strtod=avpriv_strtod
5413                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5414                                              _snprintf=avpriv_snprintf  \
5415                                              vsnprintf=avpriv_vsnprintf
5416             fi
5417         fi
5418         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5419         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5420         # 0x601 by default unless something else is set by the user.
5421         # This can easily lead to us detecting functions only present
5422         # in such new versions and producing binaries requiring windows 7.0.
5423         # Therefore explicitly set the default to Vista unless the user has
5424         # set something else on the command line.
5425         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5426         # family. For these cases, configure is free to use any functions
5427         # found in the SDK headers by default. (Alternatively, we could force
5428         # _WIN32_WINNT to 0x0602 in that case.)
5429         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5430             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5431 #ifdef WINAPI_FAMILY
5432 #include <winapifamily.h>
5433 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5434 #error not desktop
5435 #endif
5436 #endif
5437 EOF
5438         if [ "$pfx" = "" ]; then
5439             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5440             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5441         fi
5442     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5443         eval ${pfx}libc_type=klibc
5444     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5445         eval ${pfx}libc_type=bionic
5446     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5447         eval ${pfx}libc_type=solaris
5448         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5449     fi
5450     test_${pfx}cc <<EOF
5451 #include <time.h>
5452 void *v = localtime_r;
5453 EOF
5454 test "$?" != 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
5455 #include <time.h>
5456 void *v = localtime_r;
5457 EOF
5458
5459     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5460 }
5461
5462 probe_libc
5463 probe_libc host_
5464
5465 # hacks for compiler/libc/os combinations
5466
5467 case $libc_type in
5468     bionic)
5469         add_compat strtod.o strtod=avpriv_strtod
5470         ;;
5471 esac
5472
5473 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5474     add_cppflags '-I\$(SRC_PATH)/compat/float'
5475
5476 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5477
5478 set_default libdir
5479 : ${shlibdir_default:="$libdir"}
5480 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5481
5482 set_default $PATHS_LIST
5483 set_default nm
5484
5485 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5486
5487 enable_weak_pic() {
5488     disabled pic && return
5489     enable pic
5490     add_cppflags -DPIC
5491     case "$target_os" in
5492     mingw*|cygwin*|win*)
5493         ;;
5494     *)
5495         add_cflags -fPIC
5496         add_asflags -fPIC
5497         ;;
5498     esac
5499 }
5500
5501 enabled pic && enable_weak_pic
5502
5503 test_cc <<EOF || die "Symbol mangling check failed."
5504 int ff_extern;
5505 EOF
5506 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5507 extern_prefix=${sym%%ff_extern*}
5508
5509 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5510
5511 for restrict_keyword in restrict __restrict__ __restrict ""; do
5512     test_code cc "" "char * $restrict_keyword p" && break
5513 done
5514
5515 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5516
5517 # The global variable ensures the bits appear unchanged in the object file.
5518 test_cc <<EOF || die "endian test failed"
5519 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5520 EOF
5521 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5522
5523 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5524
5525 if ! enabled ppc64 || enabled bigendian; then
5526     disable vsx
5527 fi
5528
5529 check_gas() {
5530     log "check_gas using '$as' as AS"
5531     # :vararg is used on aarch64, arm and ppc altivec
5532     check_as vararg "
5533 .macro m n, y:vararg=0
5534 \n: .int \y
5535 .endm
5536 m x" || return 1
5537     # .altmacro is only used in arm asm
5538     ! enabled arm || check_as gnu_as ".altmacro"
5539 }
5540
5541 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5542     nogas=:
5543     enabled_any arm aarch64 && nogas=die
5544     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5545     as_noop=-v
5546
5547     case $as_type in
5548         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5549         gcc)  gaspp_as_type=gas ;;
5550         *)    gaspp_as_type=$as_type ;;
5551     esac
5552
5553     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5554
5555     test "${as#*gas-preprocessor.pl}" != "$as" ||
5556     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5557         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5558
5559     if ! check_gas ; then
5560         as=${gas:=$as}
5561         check_gas || \
5562             $nogas "GNU assembler not found, install/update gas-preprocessor"
5563     fi
5564
5565     check_as as_func ".func test
5566                       .endfunc"
5567 fi
5568
5569 check_inline_asm inline_asm_labels '"1:\n"'
5570
5571 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5572
5573 if enabled aarch64; then
5574     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5575     # internal assembler in clang 3.3 does not support this instruction
5576     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5577     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5578
5579     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5580
5581 elif enabled alpha; then
5582
5583     check_cflags -mieee
5584
5585 elif enabled arm; then
5586
5587     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5588     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5589 float func(float a, float b){ return a+b; }
5590 EOF
5591     enabled thumb && check_cflags -mthumb || check_cflags -marm
5592
5593     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5594         :
5595     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5596         :
5597     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5598         case "${cross_prefix:-$cc}" in
5599             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5600             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5601 __asm__ (".eabi_attribute 28, 1");
5602 int main(void) { return 0; }
5603 EOF
5604         esac
5605         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5606     fi
5607
5608     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5609     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5610     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5611     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5612     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5613     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5614     enabled setend  && check_insn setend  'setend be'
5615
5616     [ $target_os = linux ] || [ $target_os = android ] ||
5617         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5618             $ARCH_EXT_LIST_ARM
5619
5620     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5621
5622     check_as as_arch_directive ".arch armv7-a"
5623     check_as as_dn_directive   "ra .dn d0.i16"
5624     check_as as_fpu_directive  ".fpu neon"
5625
5626     # llvm's integrated assembler supports .object_arch from llvm 3.5
5627     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5628         check_as as_object_arch ".object_arch armv4"
5629
5630     # MS armasm fails to assemble our PIC constructs
5631     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5632
5633 elif enabled mips; then
5634
5635     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5636     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5637     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5638
5639     # Enable minimum ISA based on selected options
5640     if enabled mips64; then
5641         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5642         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5643         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5644     else
5645         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5646         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5647         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5648         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5649     fi
5650
5651     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5652     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5653     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5654     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5655     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5656
5657     if enabled bigendian && enabled msa; then
5658         disable msa
5659     fi
5660
5661 elif enabled parisc; then
5662
5663     if enabled gcc; then
5664         case $($cc -dumpversion) in
5665             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5666         esac
5667     fi
5668
5669 elif enabled ppc; then
5670
5671     enable local_aligned
5672
5673     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5674     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5675     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5676     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5677
5678     if enabled altivec; then
5679         check_cflags -maltivec -mabi=altivec
5680
5681         # check if our compiler supports Motorola AltiVec C API
5682         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5683                                     vector signed int v2 = (vector signed int) { 1 };
5684                                     v1 = vec_add(v1, v2);"
5685
5686         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5687     fi
5688
5689     if enabled vsx; then
5690         check_cflags -mvsx &&
5691         check_cc vsx altivec.h "int v[4] = { 0 };
5692                                 vector signed int v1 = vec_vsx_ld(0, v);"
5693     fi
5694
5695     if enabled power8; then
5696         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5697     fi
5698
5699 elif enabled x86; then
5700
5701     check_builtin rdtsc    intrin.h   "__rdtsc()"
5702     check_builtin mm_empty mmintrin.h "_mm_empty()"
5703
5704     enable local_aligned
5705
5706     # check whether EBP is available on x86
5707     # As 'i' is stored on the stack, this program will crash
5708     # if the base pointer is used to access it because the
5709     # base pointer is cleared in the inline assembly code.
5710     check_exec_crash <<EOF && enable ebp_available
5711 volatile int i=0;
5712 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5713 return i;
5714 EOF
5715
5716     # check whether EBX is available on x86
5717     check_inline_asm ebx_available '""::"b"(0)' &&
5718         check_inline_asm ebx_available '"":::"%ebx"'
5719
5720     # check whether xmm clobbers are supported
5721     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5722
5723     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5724         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5725
5726     # check whether binutils is new enough to compile SSSE3/MMXEXT
5727     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5728     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5729
5730     probe_x86asm(){
5731         x86asmexe_probe=$1
5732         if test_cmd $x86asmexe_probe -v; then
5733             x86asmexe=$x86asmexe_probe
5734             x86asm_type=nasm
5735             x86asm_debug="-g -F dwarf"
5736             X86ASMDEP=
5737             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5738         elif test_cmd $x86asmexe_probe --version; then
5739             x86asmexe=$x86asmexe_probe
5740             x86asm_type=yasm
5741             x86asm_debug="-g dwarf2"
5742             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5743             X86ASM_DEPFLAGS=
5744         fi
5745         check_x86asm x86asm "movbe ecx, [5]"
5746     }
5747
5748     if ! disabled_any asm mmx x86asm; then
5749         disable x86asm
5750         for program in $x86asmexe nasm yasm; do
5751             probe_x86asm $program && break
5752         done
5753         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5754         X86ASMFLAGS="-f $objformat"
5755         enabled pic               && append X86ASMFLAGS "-DPIC"
5756         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5757         case "$objformat" in
5758             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5759         esac
5760
5761         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5762         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5763         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5764         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5765         check_x86asm cpunop          "CPU amdnop"
5766     fi
5767
5768     case "$cpu" in
5769         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5770             disable fast_clz
5771         ;;
5772     esac
5773
5774 fi
5775
5776 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5777
5778 check_ldflags -Wl,--as-needed
5779 check_ldflags -Wl,-z,noexecstack
5780
5781 if ! disabled network; then
5782     check_func getaddrinfo $network_extralibs
5783     check_func inet_aton $network_extralibs
5784
5785     check_type netdb.h "struct addrinfo"
5786     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5787     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5788     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5789     check_type poll.h "struct pollfd"
5790     check_type netinet/sctp.h "struct sctp_event_subscribe"
5791     check_struct "sys/socket.h" "struct msghdr" msg_flags
5792     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5793     check_type netinet/in.h "struct sockaddr_in6"
5794     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5795     check_type "sys/types.h sys/socket.h" socklen_t
5796
5797     # Prefer arpa/inet.h over winsock2
5798     if check_headers arpa/inet.h ; then
5799         check_func closesocket
5800     elif check_headers winsock2.h ; then
5801         check_func_headers winsock2.h closesocket -lws2 &&
5802             network_extralibs="-lws2" ||
5803         { check_func_headers winsock2.h closesocket -lws2_32 &&
5804             network_extralibs="-lws2_32"; } || disable winsock2_h network
5805         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5806
5807         check_type ws2tcpip.h socklen_t
5808         check_type ws2tcpip.h "struct addrinfo"
5809         check_type ws2tcpip.h "struct group_source_req"
5810         check_type ws2tcpip.h "struct ip_mreq_source"
5811         check_type ws2tcpip.h "struct ipv6_mreq"
5812         check_type winsock2.h "struct pollfd"
5813         check_struct winsock2.h "struct sockaddr" sa_len
5814         check_type ws2tcpip.h "struct sockaddr_in6"
5815         check_type ws2tcpip.h "struct sockaddr_storage"
5816     else
5817         disable network
5818     fi
5819 fi
5820
5821 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5822 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5823 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5824 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5825 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5826 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5827 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5828
5829 case "$custom_allocator" in
5830     jemalloc)
5831         # jemalloc by default does not use a prefix
5832         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5833     ;;
5834     tcmalloc)
5835         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5836         malloc_prefix=tc_
5837     ;;
5838 esac
5839
5840 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5841 check_func  ${malloc_prefix}memalign            && enable memalign
5842 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5843
5844 check_func  access
5845 check_func_headers stdlib.h arc4random
5846 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5847 check_func  fcntl
5848 check_func  fork
5849 check_func  gethrtime
5850 check_func  getopt
5851 check_func  getrusage
5852 check_func  gettimeofday
5853 check_func  isatty
5854 check_func  mkstemp
5855 check_func  mmap
5856 check_func  mprotect
5857 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5858 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5859 check_func  sched_getaffinity
5860 check_func  setrlimit
5861 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5862 check_func  strerror_r
5863 check_func  sysconf
5864 check_func  sysctl
5865 check_func  usleep
5866
5867 check_func_headers conio.h kbhit
5868 check_func_headers io.h setmode
5869 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5870 check_func_headers mach/mach_time.h mach_absolute_time
5871 check_func_headers stdlib.h getenv
5872 check_func_headers sys/stat.h lstat
5873
5874 check_func_headers windows.h GetProcessAffinityMask
5875 check_func_headers windows.h GetProcessTimes
5876 check_func_headers windows.h GetSystemTimeAsFileTime
5877 check_func_headers windows.h LoadLibrary
5878 check_func_headers windows.h MapViewOfFile
5879 check_func_headers windows.h PeekNamedPipe
5880 check_func_headers windows.h SetConsoleTextAttribute
5881 check_func_headers windows.h SetConsoleCtrlHandler
5882 check_func_headers windows.h Sleep
5883 check_func_headers windows.h VirtualAlloc
5884 check_func_headers glob.h glob
5885 enabled xlib &&
5886     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5887
5888 check_headers direct.h
5889 check_headers dirent.h
5890 check_headers dxgidebug.h
5891 check_headers dxva.h
5892 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5893 check_headers io.h
5894 check_headers linux/perf_event.h
5895 check_headers libcrystalhd/libcrystalhd_if.h
5896 check_headers malloc.h
5897 check_headers net/udplite.h
5898 check_headers poll.h
5899 check_headers sys/param.h
5900 check_headers sys/resource.h
5901 check_headers sys/select.h
5902 check_headers sys/time.h
5903 check_headers sys/un.h
5904 check_headers termios.h
5905 check_headers unistd.h
5906 check_headers valgrind/valgrind.h
5907 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5908 check_headers windows.h
5909 check_headers X11/extensions/XvMClib.h
5910 check_headers asm/types.h
5911
5912 # it seems there are versions of clang in some distros that try to use the
5913 # gcc headers, which explodes for stdatomic
5914 # so we also check that atomics actually work here
5915 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5916
5917 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5918 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5919     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5920 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5921 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5922 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5923
5924 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5925 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5926 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5927
5928 enabled appkit       && check_apple_framework AppKit
5929 enabled audiotoolbox && check_apple_framework AudioToolbox
5930 enabled avfoundation && check_apple_framework AVFoundation
5931 enabled coreimage    && check_apple_framework CoreImage
5932 enabled videotoolbox && check_apple_framework VideoToolbox
5933
5934 check_apple_framework CoreFoundation
5935 check_apple_framework CoreMedia
5936 check_apple_framework CoreVideo
5937
5938 enabled avfoundation && {
5939     disable coregraphics applicationservices
5940     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5941     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5942
5943 enabled videotoolbox && {
5944     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5945     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5946 }
5947
5948 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5949
5950 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5951 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5952 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5953 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5954 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5955
5956 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5957 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5958 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5959 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5960 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5961 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5962
5963 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5964
5965 if ! disabled ffnvcodec; then
5966     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5967           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5968       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5969           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5970 fi
5971
5972 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5973
5974 if ! disabled w32threads && ! enabled pthreads; then
5975     check_func_headers "windows.h process.h" _beginthreadex &&
5976         check_type "windows.h" CONDITION_VARIABLE &&
5977         check_type "windows.h" INIT_ONCE &&
5978         enable w32threads || disable w32threads
5979     if ! enabled w32threads && enabled winrt; then
5980         check_func_headers "windows.h" CreateThread &&
5981             enable w32threads || disable w32threads
5982     fi
5983 fi
5984
5985 # check for some common methods of building with pthread support
5986 # do this before the optional library checks as some of them require pthreads
5987 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5988     if check_lib pthreads pthread.h pthread_join   -pthread &&
5989        check_lib pthreads pthread.h pthread_create -pthread; then
5990         add_cflags -pthread
5991     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5992          check_lib pthreads pthread.h pthread_create -pthreads; then
5993         add_cflags -pthreads
5994     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5995          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5996         add_cflags -ldl -pthread
5997     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5998          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5999         :
6000     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6001          check_lib pthreads pthread.h pthread_create -lpthread; then
6002         :
6003     elif check_func pthread_join && check_func pthread_create; then
6004         enable pthreads
6005     fi
6006     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6007
6008     if enabled pthreads; then
6009         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6010         check_func pthread_cancel $pthreads_extralibs
6011     fi
6012 fi
6013
6014 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6015                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6016 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6017 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6018
6019 # On some systems dynamic loading requires no extra linker flags
6020 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6021
6022 check_lib libm math.h sin -lm
6023
6024 atan2f_args=2
6025 copysign_args=2
6026 hypot_args=2
6027 ldexpf_args=2
6028 powf_args=2
6029
6030 for func in $MATH_FUNCS; do
6031     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6032 done
6033
6034 for func in $COMPLEX_FUNCS; do
6035     eval check_complexfunc $func \${${func}_args:-1}
6036 done
6037
6038 # these are off by default, so fail if requested and not available
6039 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6040 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6041 enabled decklink          && { require_headers DeckLinkAPI.h &&
6042                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6043 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6044 enabled frei0r            && require_headers frei0r.h
6045 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6046 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6047 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6048 enabled ladspa            && require_headers ladspa.h
6049 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6050 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6051 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6052 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6053 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6054 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6055 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6056                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6057                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6058 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6059 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6060 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.5.115" davs2.h davs2_decoder_open
6061 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6062 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6063 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6064                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6065                                  warn "using libfdk without pkg-config"; } }
6066 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"
6067 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6068 enabled fontconfig        && enable libfontconfig
6069 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6070 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6071 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6072 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6073                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6074 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6075                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6076                                done || die "ERROR: libgsm not found"; }
6077 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6078 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6079 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6080 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6081 # While it may appear that require is being used as a pkg-config
6082 # fallback for libmfx, it is actually being used to detect a different
6083 # installation route altogether.  If libmfx is installed via the Intel
6084 # Media SDK or Intel Media Server Studio, these don't come with
6085 # pkg-config support.  Instead, users should make sure that the build
6086 # can find the libraries and headers through other means.
6087 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6088                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6089 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6090 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6091 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6092                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6093 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6094                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6095                                die "ERROR: libnpp not found"; }
6096 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6097 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6098 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6099                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6100                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6101                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6102 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6103 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6104                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6105 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6106 enabled libopus           && {
6107     enabled libopus_decoder && {
6108         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6109     }
6110     enabled libopus_encoder && {
6111         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6112     }
6113 }
6114 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6115 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6116 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6117 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6118 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6119 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6120                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6121 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6122 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6123 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6124 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6125 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6126 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6127 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6128 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6129 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6130 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6131                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6132                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6133 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6134 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6135 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6136 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6137 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6138                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6139
6140 enabled libvpx            && {
6141     enabled libvpx_vp8_decoder && {
6142         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6143             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6144                 die "ERROR: libvpx decoder version must be >=1.4.0";
6145     }
6146     enabled libvpx_vp8_encoder && {
6147         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6148             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6149                 die "ERROR: libvpx encoder version must be >=1.4.0";
6150     }
6151     enabled libvpx_vp9_decoder && {
6152         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6153             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6154     }
6155     enabled libvpx_vp9_encoder && {
6156         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6157             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6158     }
6159     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6160         die "libvpx enabled but no supported decoders found"
6161     fi
6162 }
6163
6164 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6165 enabled libwebp           && {
6166     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6167     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6168 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6169                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6170                                  warn "using libx264 without pkg-config"; } } &&
6171                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6172                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6173 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6174                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6175 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6176 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.2.77" "stdint.h xavs2.h" xavs2_api_get
6177 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6178 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6179 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6180 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6181                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6182                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6183 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6184 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6185                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6186                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6187                                die "ERROR: mbedTLS not found"; }
6188 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6189 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6190                                { ! enabled cross_compile &&
6191                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6192                                  add_ldflags -L/opt/vc/lib/ &&
6193                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6194                                die "ERROR: mmal not found" &&
6195                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6196 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6197                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6198                                die "ERROR: openal not found"; } &&
6199                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6200                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6201 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6202                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6203                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6204                                die "ERROR: opencl not found"; } &&
6205                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6206                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6207                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6208 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6209                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6210                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6211                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6212                                die "ERROR: opengl not found."
6213                              }
6214 enabled omx               && require_headers OMX_Core.h
6215 enabled omx_rpi           && { check_headers OMX_Core.h ||
6216                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6217                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6218 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6219                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6220                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6221                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6222                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6223                                die "ERROR: openssl not found"; }
6224 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6225                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6226                                { enabled libdrm ||
6227                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6228                              }
6229 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6230
6231
6232 if enabled gcrypt; then
6233     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6234     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6235         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6236         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6237         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6238             die "ERROR: gcrypt not found"
6239         add_cflags $gcrypt_cflags
6240     else
6241         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6242     fi
6243 fi
6244
6245 if enabled sdl2; then
6246     SDL2_CONFIG="${cross_prefix}sdl2-config"
6247     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6248     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6249         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6250         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6251         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6252         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6253         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6254             enable sdl2
6255     fi
6256     if test $target_os = "mingw32"; then
6257         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6258     fi
6259 fi
6260
6261 if enabled decklink; then
6262     case $target_os in
6263         mingw32*|mingw64*|win32|win64)
6264             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6265             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6266             ;;
6267     esac
6268 fi
6269
6270 enabled securetransport &&
6271     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6272     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6273         disable securetransport
6274
6275 enabled securetransport &&
6276     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6277
6278 enabled schannel &&
6279     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6280     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6281     schannel_extralibs="-lsecur32" ||
6282         disable schannel
6283
6284 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6285 enabled makeinfo \
6286     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6287     && enable makeinfo_html || disable makeinfo_html
6288 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6289 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6290 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6291 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6292
6293 # check V4L2 codecs available in the API
6294 check_headers linux/fb.h
6295 check_headers linux/videodev2.h
6296 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6297 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6298 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6299 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6300 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6301 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6302 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6303 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6304 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6305 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6306 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6307
6308 check_headers sys/videoio.h
6309 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6310
6311 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6312 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6313 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6314 # w32api 3.12 had it defined wrong
6315 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6316
6317 check_type "dshow.h" IBaseFilter
6318
6319 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6320 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6321     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6322     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6323     check_headers "dev/ic/bt8xx.h"
6324
6325 if check_struct sys/soundcard.h audio_buf_info bytes; then
6326     enable_sanitized sys/soundcard.h
6327 else
6328     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6329     #include <sys/soundcard.h>
6330     audio_buf_info abc;
6331 EOF
6332 fi
6333
6334 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6335     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6336
6337 enabled libjack &&
6338     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6339
6340 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6341
6342 if enabled libcdio; then
6343     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6344     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6345     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6346     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6347     die "ERROR: No usable libcdio/cdparanoia found"
6348 fi
6349
6350 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6351     disable libxcb_shm libxcb_shape libxcb_xfixes
6352
6353 if enabled libxcb; then
6354     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6355     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6356     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6357 fi
6358
6359 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6360
6361 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6362 # the desktop api partition
6363 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6364 #ifdef WINAPI_FAMILY
6365 #include <winapifamily.h>
6366 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6367 #error desktop, not uwp
6368 #else
6369 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6370 #endif
6371 #else
6372 #error no family set
6373 #endif
6374 EOF
6375
6376 enabled vaapi &&
6377     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6378
6379 if enabled vaapi; then
6380     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6381
6382     if enabled xlib; then
6383         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6384     fi
6385
6386     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6387 fi
6388
6389 if enabled_all opencl libdrm ; then
6390     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6391         enable opencl_drm_beignet
6392     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6393         enable opencl_drm_arm
6394 fi
6395
6396 if enabled_all opencl vaapi ; then
6397     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6398     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6399         enable opencl_vaapi_intel_media
6400 fi
6401
6402 if enabled_all opencl dxva2 ; then
6403     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6404         enable opencl_dxva2
6405 fi
6406
6407 if enabled_all opencl d3d11va ; then
6408     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6409         enable opencl_d3d11
6410 fi
6411
6412 enabled vdpau &&
6413     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6414
6415 enabled vdpau &&
6416     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6417
6418 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6419
6420 if enabled x86; then
6421     case $target_os in
6422         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6423             ;;
6424         *)
6425             disable ffnvcodec cuvid nvdec nvenc
6426             ;;
6427     esac
6428 else
6429     disable ffnvcodec cuvid nvdec nvenc
6430 fi
6431
6432 enabled ffnvcodec && enable cuda
6433
6434 enabled nvenc &&
6435     test_cc -I$source_path <<EOF || disable nvenc
6436 #include <ffnvcodec/nvEncodeAPI.h>
6437 NV_ENCODE_API_FUNCTION_LIST flist;
6438 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6439 int main(void) { return 0; }
6440 EOF
6441
6442 enabled amf &&
6443     check_cpp_condition amf "AMF/core/Version.h" \
6444         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6445
6446 # Funny iconv installations are not unusual, so check it after all flags have been set
6447 if enabled libc_iconv; then
6448     check_func_headers iconv.h iconv
6449 elif enabled iconv; then
6450     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6451 fi
6452
6453 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6454
6455 # add some useful compiler flags if supported
6456 check_cflags -Wdeclaration-after-statement
6457 check_cflags -Wall
6458 check_cflags -Wdisabled-optimization
6459 check_cflags -Wpointer-arith
6460 check_cflags -Wredundant-decls
6461 check_cflags -Wwrite-strings
6462 check_cflags -Wtype-limits
6463 check_cflags -Wundef
6464 check_cflags -Wmissing-prototypes
6465 check_cflags -Wno-pointer-to-int-cast
6466 check_cflags -Wstrict-prototypes
6467 check_cflags -Wempty-body
6468
6469 if enabled extra_warnings; then
6470     check_cflags -Wcast-qual
6471     check_cflags -Wextra
6472     check_cflags -Wpedantic
6473 fi
6474
6475 check_disable_warning(){
6476     warning_flag=-W${1#-Wno-}
6477     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6478 }
6479
6480 test_cflags -Werror=unused-command-line-argument &&
6481     append unknown_warning_flags "-Werror=unused-command-line-argument"
6482 test_cflags -Werror=unknown-warning-option &&
6483     append unknown_warning_flags "-Werror=unknown-warning-option"
6484
6485 check_disable_warning -Wno-parentheses
6486 check_disable_warning -Wno-switch
6487 check_disable_warning -Wno-format-zero-length
6488 check_disable_warning -Wno-pointer-sign
6489 check_disable_warning -Wno-unused-const-variable
6490 check_disable_warning -Wno-bool-operation
6491
6492 check_disable_warning_headers(){
6493     warning_flag=-W${1#-Wno-}
6494     test_cflags $warning_flag && add_cflags_headers $1
6495 }
6496
6497 check_disable_warning_headers -Wno-deprecated-declarations
6498 check_disable_warning_headers -Wno-unused-variable
6499
6500 test_cc <<EOF && enable blocks_extension
6501 void (^block)(void);
6502 EOF
6503
6504 # add some linker flags
6505 check_ldflags -Wl,--warn-common
6506 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6507 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6508 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6509
6510 # add some strip flags
6511 check_stripflags -x
6512
6513 enabled neon_clobber_test &&
6514     check_ldflags -Wl,--wrap,avcodec_open2              \
6515                   -Wl,--wrap,avcodec_decode_audio4      \
6516                   -Wl,--wrap,avcodec_decode_video2      \
6517                   -Wl,--wrap,avcodec_decode_subtitle2   \
6518                   -Wl,--wrap,avcodec_encode_audio2      \
6519                   -Wl,--wrap,avcodec_encode_video2      \
6520                   -Wl,--wrap,avcodec_encode_subtitle    \
6521                   -Wl,--wrap,avcodec_send_packet        \
6522                   -Wl,--wrap,avcodec_receive_packet     \
6523                   -Wl,--wrap,avcodec_send_frame         \
6524                   -Wl,--wrap,avcodec_receive_frame      \
6525                   -Wl,--wrap,swr_convert                \
6526                   -Wl,--wrap,avresample_convert ||
6527     disable neon_clobber_test
6528
6529 enabled xmm_clobber_test &&
6530     check_ldflags -Wl,--wrap,avcodec_open2              \
6531                   -Wl,--wrap,avcodec_decode_audio4      \
6532                   -Wl,--wrap,avcodec_decode_video2      \
6533                   -Wl,--wrap,avcodec_decode_subtitle2   \
6534                   -Wl,--wrap,avcodec_encode_audio2      \
6535                   -Wl,--wrap,avcodec_encode_video2      \
6536                   -Wl,--wrap,avcodec_encode_subtitle    \
6537                   -Wl,--wrap,avcodec_send_packet        \
6538                   -Wl,--wrap,avcodec_receive_packet     \
6539                   -Wl,--wrap,avcodec_send_frame         \
6540                   -Wl,--wrap,avcodec_receive_frame      \
6541                   -Wl,--wrap,swr_convert                \
6542                   -Wl,--wrap,avresample_convert         \
6543                   -Wl,--wrap,sws_scale ||
6544     disable xmm_clobber_test
6545
6546 check_ld "cc" proper_dce <<EOF
6547 extern const int array[512];
6548 static inline int func(void) { return array[0]; }
6549 int main(void) { return 0; }
6550 EOF
6551
6552 if enabled proper_dce; then
6553     echo "X { local: *; };" > $TMPV
6554     if test_ldflags -Wl,${version_script},$TMPV; then
6555         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6556         quotes='""'
6557         test_cc <<EOF && enable symver_asm_label
6558 void ff_foo(void) __asm__ ("av_foo@VERSION");
6559 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6560 EOF
6561         test_cc <<EOF && enable symver_gnu_asm
6562 __asm__(".symver ff_foo,av_foo@VERSION");
6563 void ff_foo(void) {}
6564 EOF
6565     fi
6566 fi
6567
6568 if [ -z "$optflags" ]; then
6569     if enabled small; then
6570         optflags=$cflags_size
6571     elif enabled optimizations; then
6572         optflags=$cflags_speed
6573     else
6574         optflags=$cflags_noopt
6575     fi
6576 fi
6577
6578 if [ -z "$nvccflags" ]; then
6579     nvccflags=$nvccflags_default
6580 fi
6581
6582 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6583     nvccflags="$nvccflags -m64"
6584 else
6585     nvccflags="$nvccflags -m32"
6586 fi
6587
6588 check_optflags(){
6589     check_cflags "$@"
6590     enabled lto && check_ldflags "$@"
6591 }
6592
6593 check_optflags $optflags
6594 check_optflags -fno-math-errno
6595 check_optflags -fno-signed-zeros
6596
6597 if enabled lto; then
6598     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6599     check_cflags  -flto
6600     check_ldflags -flto $cpuflags
6601     disable inline_asm_direct_symbol_refs
6602 fi
6603
6604 enabled ftrapv && check_cflags -ftrapv
6605
6606 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6607 int x;
6608 EOF
6609
6610
6611 if enabled icc; then
6612     # Just warnings, no remarks
6613     check_cflags -w1
6614     # -wd: Disable following warnings
6615     # 144, 167, 556: -Wno-pointer-sign
6616     # 188: enumerated type mixed with another type
6617     # 1292: attribute "foo" ignored
6618     # 1419: external declaration in primary source file
6619     # 10006: ignoring unknown option -fno-signed-zeros
6620     # 10148: ignoring unknown option -Wno-parentheses
6621     # 10156: ignoring option '-W'; no argument required
6622     # 13200: No EMMS instruction before call to function
6623     # 13203: No EMMS instruction before return from function
6624     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6625     # 11030: Warning unknown option --as-needed
6626     # 10156: ignoring option '-export'; no argument required
6627     check_ldflags -wd10156,11030
6628     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6629     enable ebp_available
6630     # The test above does not test linking
6631     enabled lto && disable symver_asm_label
6632     if enabled x86_32; then
6633         icc_version=$($cc -dumpversion)
6634         test ${icc_version%%.*} -ge 11 &&
6635             check_cflags -falign-stack=maintain-16-byte ||
6636             disable aligned_stack
6637     fi
6638 elif enabled gcc; then
6639     check_optflags -fno-tree-vectorize
6640     check_cflags -Werror=format-security
6641     check_cflags -Werror=implicit-function-declaration
6642     check_cflags -Werror=missing-prototypes
6643     check_cflags -Werror=return-type
6644     check_cflags -Werror=vla
6645     check_cflags -Wformat
6646     check_cflags -fdiagnostics-color=auto
6647     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6648     if enabled x86_32; then
6649         case $target_os in
6650         *bsd*)
6651             # BSDs don't guarantee a 16 byte aligned stack, but we can
6652             # request GCC to try to maintain 16 byte alignment throughout
6653             # function calls. Library entry points that might call assembly
6654             # functions align the stack. (The parameter means 2^4 bytes.)
6655             check_cflags -mpreferred-stack-boundary=4
6656             ;;
6657         esac
6658     fi
6659 elif enabled llvm_gcc; then
6660     check_cflags -mllvm -stack-alignment=16
6661 elif enabled clang; then
6662     if enabled x86_32; then
6663         # Clang doesn't support maintaining alignment without assuming the
6664         # same alignment in every function. If 16 byte alignment would be
6665         # enabled, one would also have to either add attribute_align_arg on
6666         # every single entry point into the libraries or enable -mstackrealign
6667         # (doing stack realignment in every single function).
6668         case $target_os in
6669         mingw32|win32|*bsd*)
6670             disable aligned_stack
6671             ;;
6672         *)
6673             check_cflags -mllvm -stack-alignment=16
6674             check_cflags -mstack-alignment=16
6675             ;;
6676         esac
6677     else
6678         check_cflags -mllvm -stack-alignment=16
6679         check_cflags -mstack-alignment=16
6680     fi
6681     check_cflags -Qunused-arguments
6682     check_cflags -Werror=implicit-function-declaration
6683     check_cflags -Werror=missing-prototypes
6684     check_cflags -Werror=return-type
6685 elif enabled cparser; then
6686     add_cflags -Wno-missing-variable-declarations
6687     add_cflags -Wno-empty-statement
6688 elif enabled armcc; then
6689     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6690     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6691     # 2523: use of inline assembly is deprecated
6692     add_cflags -W${armcc_opt},--diag_suppress=2523
6693     add_cflags -W${armcc_opt},--diag_suppress=1207
6694     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6695     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6696     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6697     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6698 elif enabled pathscale; then
6699     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6700     disable inline_asm
6701 elif enabled_any msvc icl; then
6702     enabled x86_32 && disable aligned_stack
6703     enabled_all x86_32 debug && add_cflags -Oy-
6704     enabled debug && add_ldflags -debug
6705     enable pragma_deprecated
6706     if enabled icl; then
6707         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6708         # (correctly) on icl 13.x.
6709         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6710             add_cflags -Qansi-alias
6711         # Some inline asm is not compilable in debug
6712         if enabled debug; then
6713             disable ebp_available
6714             disable ebx_available
6715         fi
6716     fi
6717     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6718     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6719     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6720     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6721     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6722     # MSVC 2013 and newer can handle it fine.
6723     # If this declspec fails, force including stdlib.h before the restrict redefinition
6724     # happens in config.h.
6725     if [ $restrict_keyword != restrict ]; then
6726         test_cc <<EOF || add_cflags -FIstdlib.h
6727 __declspec($restrict_keyword) void *foo(int);
6728 EOF
6729     fi
6730     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6731     # Issue has been fixed in MSVC v19.00.24218.
6732     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6733         check_cflags -d2SSAOptimizer-
6734     # enable utf-8 source processing on VS2015 U2 and newer
6735     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6736         add_cflags -utf-8
6737 fi
6738
6739 for pfx in "" host_; do
6740     varname=${pfx%_}cc_type
6741     eval "type=\$$varname"
6742     if [ "$type" = "msvc" ]; then
6743         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6744 static inline int foo(int a) { return a; }
6745 EOF
6746     fi
6747 done
6748
6749 case $as_type in
6750     clang)
6751         add_asflags -Qunused-arguments
6752     ;;
6753 esac
6754
6755 case $ld_type in
6756     clang)
6757         check_ldflags -Qunused-arguments
6758     ;;
6759 esac
6760
6761 enable frame_thread_encoder
6762
6763 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6764
6765 check_deps $CONFIG_LIST       \
6766            $CONFIG_EXTRA      \
6767            $HAVE_LIST         \
6768            $ALL_COMPONENTS    \
6769
6770 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"
6771 enabled avresample && warn "Building with deprecated library libavresample"
6772
6773 if test $target_os = "haiku"; then
6774     disable memalign
6775     disable posix_memalign
6776 fi
6777
6778 flatten_extralibs(){
6779     nested_entries=
6780     list_name=$1
6781     eval list=\$${1}
6782     for entry in $list; do
6783         entry_copy=$entry
6784         resolve entry_copy
6785         flat_entries=
6786         for e in $entry_copy; do
6787             case $e in
6788                 *_extralibs) nested_entries="$nested_entries$e ";;
6789                           *) flat_entries="$flat_entries$e ";;
6790             esac
6791         done
6792         eval $entry="\$flat_entries"
6793     done
6794     append $list_name "$nested_entries"
6795
6796     resolve nested_entries
6797     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6798         flatten_extralibs $list_name
6799     fi
6800 }
6801
6802 flatten_extralibs_wrapper(){
6803     list_name=$1
6804     flatten_extralibs $list_name
6805     unique $list_name
6806     resolve $list_name
6807     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6808     eval printf \''%s'\' \""\$$list_name"\"
6809 }
6810
6811 for linkunit in $LIBRARY_LIST; do
6812     unset current_extralibs
6813     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6814     for comp in ${components}; do
6815         enabled $comp || continue
6816         comp_extralibs="${comp}_extralibs"
6817         append current_extralibs $comp_extralibs
6818     done
6819     eval prepend ${linkunit}_extralibs $current_extralibs
6820 done
6821
6822 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6823     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6824 done
6825
6826 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6827
6828 for thread in $THREADS_LIST; do
6829     if enabled $thread; then
6830         test -n "$thread_type" &&
6831             die "ERROR: Only one thread type must be selected." ||
6832             thread_type="$thread"
6833     fi
6834 done
6835
6836 if disabled stdatomic; then
6837     if enabled atomics_gcc; then
6838         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6839     elif enabled atomics_win32; then
6840         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6841     elif enabled atomics_suncc; then
6842         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6843     elif enabled pthreads; then
6844         add_compat atomics/pthread/stdatomic.o
6845         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6846     else
6847         enabled threads && die "Threading is enabled, but no atomics are available"
6848         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6849     fi
6850 fi
6851
6852 # Check if requested libraries were found.
6853 for lib in $AUTODETECT_LIBS; do
6854     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6855 done
6856
6857 enabled zlib && add_cppflags -DZLIB_CONST
6858
6859 # conditional library dependencies, in any order
6860 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6861 enabled afir_filter         && prepend avfilter_deps "avcodec"
6862 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6863 enabled aresample_filter    && prepend avfilter_deps "swresample"
6864 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6865 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6866 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6867 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6868 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6869 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6870 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6871 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6872 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6873 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6874 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6875 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6876 enabled pan_filter          && prepend avfilter_deps "swresample"
6877 enabled pp_filter           && prepend avfilter_deps "postproc"
6878 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6879 enabled resample_filter && prepend avfilter_deps "avresample"
6880 enabled sab_filter          && prepend avfilter_deps "swscale"
6881 enabled scale_filter    && prepend avfilter_deps "swscale"
6882 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6883 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6884 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6885 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6886 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6887 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6888 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6889 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6890 enabled spp_filter          && prepend avfilter_deps "avcodec"
6891 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6892 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6893 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6894 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6895
6896 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6897
6898 #FIXME
6899 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6900
6901 enabled opus_decoder    && prepend avcodec_deps "swresample"
6902
6903 # reorder the items at var $1 to align with the items order at var $2 .
6904 # die if an item at $1 is not at $2 .
6905 reorder_by(){
6906     eval rb_in=\$$1
6907     eval rb_ordered=\$$2
6908
6909     for rb in $rb_in; do
6910         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6911     done
6912
6913     rb_out=
6914     for rb in $rb_ordered; do
6915         is_in $rb $rb_in && rb_out="$rb_out$rb "
6916     done
6917     eval $1=\$rb_out
6918 }
6919
6920 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6921 # within a set of N items, N expansions are enough to expose a cycle.
6922 expand_deps(){
6923     unique ${1}_deps  # required for the early break test.
6924     for dummy in $LIBRARY_LIST; do  # N iteratios
6925         eval deps=\$${1}_deps
6926         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6927         unique ${1}_deps
6928         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6929     done
6930
6931     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6932     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6933 }
6934
6935 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6936 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6937
6938 map 'expand_deps $v' $LIBRARY_LIST
6939
6940 if test "$quiet" != "yes"; then
6941
6942 echo "install prefix            $prefix"
6943 echo "source path               $source_path"
6944 echo "C compiler                $cc"
6945 echo "C library                 $libc_type"
6946 if test "$host_cc" != "$cc"; then
6947     echo "host C compiler           $host_cc"
6948     echo "host C library            $host_libc_type"
6949 fi
6950 echo "ARCH                      $arch ($cpu)"
6951 if test "$build_suffix" != ""; then
6952     echo "build suffix              $build_suffix"
6953 fi
6954 if test "$progs_suffix" != ""; then
6955     echo "progs suffix              $progs_suffix"
6956 fi
6957 if test "$extra_version" != ""; then
6958     echo "version string suffix     $extra_version"
6959 fi
6960 echo "big-endian                ${bigendian-no}"
6961 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6962 if enabled x86; then
6963     echo "standalone assembly       ${x86asm-no}"
6964     echo "x86 assembler             ${x86asmexe}"
6965     echo "MMX enabled               ${mmx-no}"
6966     echo "MMXEXT enabled            ${mmxext-no}"
6967     echo "3DNow! enabled            ${amd3dnow-no}"
6968     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6969     echo "SSE enabled               ${sse-no}"
6970     echo "SSSE3 enabled             ${ssse3-no}"
6971     echo "AESNI enabled             ${aesni-no}"
6972     echo "AVX enabled               ${avx-no}"
6973     echo "AVX2 enabled              ${avx2-no}"
6974     echo "AVX-512 enabled           ${avx512-no}"
6975     echo "XOP enabled               ${xop-no}"
6976     echo "FMA3 enabled              ${fma3-no}"
6977     echo "FMA4 enabled              ${fma4-no}"
6978     echo "i686 features enabled     ${i686-no}"
6979     echo "CMOV is fast              ${fast_cmov-no}"
6980     echo "EBX available             ${ebx_available-no}"
6981     echo "EBP available             ${ebp_available-no}"
6982 fi
6983 if enabled aarch64; then
6984     echo "NEON enabled              ${neon-no}"
6985     echo "VFP enabled               ${vfp-no}"
6986 fi
6987 if enabled arm; then
6988     echo "ARMv5TE enabled           ${armv5te-no}"
6989     echo "ARMv6 enabled             ${armv6-no}"
6990     echo "ARMv6T2 enabled           ${armv6t2-no}"
6991     echo "VFP enabled               ${vfp-no}"
6992     echo "NEON enabled              ${neon-no}"
6993     echo "THUMB enabled             ${thumb-no}"
6994 fi
6995 if enabled mips; then
6996     echo "MIPS FPU enabled          ${mipsfpu-no}"
6997     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6998     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6999     echo "MIPS MSA enabled          ${msa-no}"
7000     echo "LOONGSON MMI enabled      ${mmi-no}"
7001 fi
7002 if enabled ppc; then
7003     echo "AltiVec enabled           ${altivec-no}"
7004     echo "VSX enabled               ${vsx-no}"
7005     echo "POWER8 enabled            ${power8-no}"
7006     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7007     echo "dcbzl available           ${dcbzl-no}"
7008 fi
7009 echo "debug symbols             ${debug-no}"
7010 echo "strip symbols             ${stripping-no}"
7011 echo "optimize for size         ${small-no}"
7012 echo "optimizations             ${optimizations-no}"
7013 echo "static                    ${static-no}"
7014 echo "shared                    ${shared-no}"
7015 echo "postprocessing support    ${postproc-no}"
7016 echo "network support           ${network-no}"
7017 echo "threading support         ${thread_type-no}"
7018 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7019 echo "texi2html enabled         ${texi2html-no}"
7020 echo "perl enabled              ${perl-no}"
7021 echo "pod2man enabled           ${pod2man-no}"
7022 echo "makeinfo enabled          ${makeinfo-no}"
7023 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7024 test -n "$random_seed" &&
7025     echo "random seed               ${random_seed}"
7026 echo
7027
7028 echo "External libraries:"
7029 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7030 echo
7031
7032 echo "External libraries providing hardware acceleration:"
7033 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7034 echo
7035
7036 echo "Libraries:"
7037 print_enabled '' $LIBRARY_LIST | print_in_columns
7038 echo
7039
7040 echo "Programs:"
7041 print_enabled '' $PROGRAM_LIST | print_in_columns
7042 echo
7043
7044 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7045     echo "Enabled ${type}s:"
7046     eval list=\$$(toupper $type)_LIST
7047     print_enabled '_*' $list | print_in_columns
7048     echo
7049 done
7050
7051 if test -n "$ignore_tests"; then
7052     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7053     echo "Ignored FATE tests:"
7054     echo $ignore_tests | print_in_columns
7055     echo
7056 fi
7057
7058 echo "License: $license"
7059
7060 fi # test "$quiet" != "yes"
7061
7062 if test -n "$WARNINGS"; then
7063     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7064     enabled fatal_warnings && exit 1
7065 fi
7066
7067 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7068
7069 esc(){
7070     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7071 }
7072
7073 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7074
7075 enabled stripping || strip="echo skipping strip"
7076 enabled stripping || striptype=""
7077
7078 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7079
7080 cat > ffbuild/config.mak <<EOF
7081 # Automatically generated by configure - do not modify!
7082 ifndef FFMPEG_CONFIG_MAK
7083 FFMPEG_CONFIG_MAK=1
7084 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7085 prefix=$prefix
7086 LIBDIR=\$(DESTDIR)$libdir
7087 SHLIBDIR=\$(DESTDIR)$shlibdir
7088 INCDIR=\$(DESTDIR)$incdir
7089 BINDIR=\$(DESTDIR)$bindir
7090 DATADIR=\$(DESTDIR)$datadir
7091 DOCDIR=\$(DESTDIR)$docdir
7092 MANDIR=\$(DESTDIR)$mandir
7093 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7094 INSTALL_NAME_DIR=$install_name_dir
7095 SRC_PATH=$source_path
7096 SRC_LINK=$source_link
7097 ifndef MAIN_MAKEFILE
7098 SRC_PATH:=\$(SRC_PATH:.%=..%)
7099 endif
7100 CC_IDENT=$cc_ident
7101 ARCH=$arch
7102 INTRINSICS=$intrinsics
7103 EXTERN_PREFIX=$extern_prefix
7104 CC=$cc
7105 CXX=$cxx
7106 AS=$as
7107 OBJCC=$objcc
7108 LD=$ld
7109 DEPCC=$dep_cc
7110 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7111 DEPAS=$as
7112 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7113 X86ASM=$x86asmexe
7114 DEPX86ASM=$x86asmexe
7115 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7116 AR=$ar
7117 ARFLAGS=$arflags
7118 AR_O=$ar_o
7119 AR_CMD=$ar
7120 NM_CMD=$nm
7121 RANLIB=$ranlib
7122 STRIP=$strip
7123 STRIPTYPE=$striptype
7124 NVCC=$nvcc
7125 CP=cp -p
7126 LN_S=$ln_s
7127 CPPFLAGS=$CPPFLAGS
7128 CFLAGS=$CFLAGS
7129 CXXFLAGS=$CXXFLAGS
7130 OBJCFLAGS=$OBJCFLAGS
7131 ASFLAGS=$ASFLAGS
7132 NVCCFLAGS=$nvccflags
7133 AS_C=$AS_C
7134 AS_O=$AS_O
7135 OBJCC_C=$OBJCC_C
7136 OBJCC_E=$OBJCC_E
7137 OBJCC_O=$OBJCC_O
7138 CC_C=$CC_C
7139 CC_E=$CC_E
7140 CC_O=$CC_O
7141 CXX_C=$CXX_C
7142 CXX_O=$CXX_O
7143 NVCC_C=$NVCC_C
7144 NVCC_O=$NVCC_O
7145 LD_O=$LD_O
7146 X86ASM_O=$X86ASM_O
7147 LD_LIB=$LD_LIB
7148 LD_PATH=$LD_PATH
7149 DLLTOOL=$dlltool
7150 WINDRES=$windres
7151 DEPWINDRES=$dep_cc
7152 DOXYGEN=$doxygen
7153 LDFLAGS=$LDFLAGS
7154 LDEXEFLAGS=$LDEXEFLAGS
7155 LDSOFLAGS=$LDSOFLAGS
7156 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7157 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7158 X86ASMFLAGS=$X86ASMFLAGS
7159 BUILDSUF=$build_suffix
7160 PROGSSUF=$progs_suffix
7161 FULLNAME=$FULLNAME
7162 LIBPREF=$LIBPREF
7163 LIBSUF=$LIBSUF
7164 LIBNAME=$LIBNAME
7165 SLIBPREF=$SLIBPREF
7166 SLIBSUF=$SLIBSUF
7167 EXESUF=$EXESUF
7168 EXTRA_VERSION=$extra_version
7169 CCDEP=$CCDEP
7170 CXXDEP=$CXXDEP
7171 CCDEP_FLAGS=$CCDEP_FLAGS
7172 ASDEP=$ASDEP
7173 ASDEP_FLAGS=$ASDEP_FLAGS
7174 X86ASMDEP=$X86ASMDEP
7175 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7176 CC_DEPFLAGS=$CC_DEPFLAGS
7177 AS_DEPFLAGS=$AS_DEPFLAGS
7178 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7179 HOSTCC=$host_cc
7180 HOSTLD=$host_ld
7181 HOSTCFLAGS=$host_cflags
7182 HOSTCPPFLAGS=$host_cppflags
7183 HOSTEXESUF=$HOSTEXESUF
7184 HOSTLDFLAGS=$host_ldflags
7185 HOSTEXTRALIBS=$host_extralibs
7186 DEPHOSTCC=$host_cc
7187 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7188 HOSTCCDEP=$HOSTCCDEP
7189 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7190 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7191 HOSTCC_C=$HOSTCC_C
7192 HOSTCC_O=$HOSTCC_O
7193 HOSTLD_O=$HOSTLD_O
7194 TARGET_EXEC=$target_exec $target_exec_args
7195 TARGET_PATH=$target_path
7196 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7197 CFLAGS-ffplay=${sdl2_cflags}
7198 CFLAGS_HEADERS=$CFLAGS_HEADERS
7199 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7200 EXTRALIBS=$extralibs
7201 COMPAT_OBJS=$compat_objs
7202 INSTALL=$install
7203 LIBTARGET=${LIBTARGET}
7204 SLIBNAME=${SLIBNAME}
7205 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7206 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7207 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7208 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7209 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7210 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7211 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7212 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7213 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7214 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7215 NOREDZONE_FLAGS=$noredzone_flags
7216 LIBFUZZER_PATH=$libfuzzer_path
7217 IGNORE_TESTS=$ignore_tests
7218 EOF
7219
7220 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7221
7222 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7223     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7224 done
7225
7226 cat > $TMPH <<EOF
7227 /* Automatically generated by configure - do not modify! */
7228 #ifndef FFMPEG_CONFIG_H
7229 #define FFMPEG_CONFIG_H
7230 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7231 #define FFMPEG_LICENSE "$(c_escape $license)"
7232 #define CONFIG_THIS_YEAR 2018
7233 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7234 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7235 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7236 #define av_restrict $restrict_keyword
7237 #define EXTERN_PREFIX "${extern_prefix}"
7238 #define EXTERN_ASM ${extern_prefix}
7239 #define BUILDSUF "$build_suffix"
7240 #define SLIBSUF "$SLIBSUF"
7241 #define HAVE_MMX2 HAVE_MMXEXT
7242 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7243 EOF
7244
7245 test -n "$assert_level" &&
7246     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7247
7248 test -n "$malloc_prefix" &&
7249     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7250
7251 if enabled x86asm; then
7252     append config_files $TMPASM
7253     cat > $TMPASM <<EOF
7254 ; Automatically generated by configure - do not modify!
7255 EOF
7256 fi
7257
7258 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7259
7260
7261 mkdir -p doc
7262 mkdir -p tests
7263 mkdir -p tests/api
7264 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7265
7266 print_config ARCH_   "$config_files" $ARCH_LIST
7267 print_config HAVE_   "$config_files" $HAVE_LIST
7268 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7269                                      $CONFIG_EXTRA      \
7270                                      $ALL_COMPONENTS    \
7271
7272 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7273 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7274
7275 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7276 cp_if_changed $TMPH config.h
7277 touch ffbuild/.config
7278
7279 enabled x86asm && cp_if_changed $TMPASM config.asm
7280
7281 cat > $TMPH <<EOF
7282 /* Generated by ffmpeg configure */
7283 #ifndef AVUTIL_AVCONFIG_H
7284 #define AVUTIL_AVCONFIG_H
7285 EOF
7286
7287 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7288
7289 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7290
7291 cp_if_changed $TMPH libavutil/avconfig.h
7292
7293 # full_filter_name_foo=vf_foo
7294 # full_filter_name_bar=asrc_bar
7295 # ...
7296 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7297
7298 # generate the lists of enabled components
7299 print_enabled_components(){
7300     file=$1
7301     struct_name=$2
7302     name=$3
7303     shift 3
7304     echo "static const $struct_name * const $name[] = {" > $TMPH
7305     for c in $*; do
7306         if enabled $c; then
7307             case $name in
7308                 filter_list)
7309                     eval c=\$full_filter_name_${c%_filter}
7310                 ;;
7311                 indev_list)
7312                     c=${c%_indev}_demuxer
7313                 ;;
7314                 outdev_list)
7315                     c=${c%_outdev}_muxer
7316                 ;;
7317             esac
7318             printf "    &ff_%s,\n" $c >> $TMPH
7319         fi
7320     done
7321     if [ "$name" = "filter_list" ]; then
7322         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7323             printf "    &ff_%s,\n" $c >> $TMPH
7324         done
7325     fi
7326     echo "    NULL };" >> $TMPH
7327     cp_if_changed $TMPH $file
7328 }
7329
7330 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7331 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7332 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7333 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7334 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7335 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7336 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7337 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7338 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7339
7340 # Settings for pkg-config files
7341
7342 cat > $TMPH <<EOF
7343 # Automatically generated by configure - do not modify!
7344 shared=$shared
7345 build_suffix=$build_suffix
7346 prefix=$prefix
7347 libdir=$libdir
7348 incdir=$incdir
7349 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7350 source_path=${source_path}
7351 LIBPREF=${LIBPREF}
7352 LIBSUF=${LIBSUF}
7353 extralibs_avutil="$avutil_extralibs"
7354 extralibs_avcodec="$avcodec_extralibs"
7355 extralibs_avformat="$avformat_extralibs"
7356 extralibs_avdevice="$avdevice_extralibs"
7357 extralibs_avfilter="$avfilter_extralibs"
7358 extralibs_avresample="$avresample_extralibs"
7359 extralibs_postproc="$postproc_extralibs"
7360 extralibs_swscale="$swscale_extralibs"
7361 extralibs_swresample="$swresample_extralibs"
7362 EOF
7363
7364 for lib in $LIBRARY_LIST; do
7365     lib_deps="$(eval echo \$${lib}_deps)"
7366     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7367 done
7368
7369 cp_if_changed $TMPH ffbuild/config.sh