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-libkvazaar      enable HEVC encoding via libkvazaar [no]
 243   --enable-liblensfun      enable lensfun lens correction [no]
 244   --enable-libmodplug      enable ModPlug via libmodplug [no]
 245   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 246   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 247   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 248   --enable-libopencv       enable video filtering via libopencv [no]
 249   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 250   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 251   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 252   --enable-libopus         enable Opus de/encoding via libopus [no]
 253   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 254   --enable-librsvg         enable SVG rasterization via librsvg [no]
 255   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 256   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 257   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 258   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 259   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 260   --enable-libsoxr         enable Include libsoxr resampling [no]
 261   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 262   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 263   --enable-libssh          enable SFTP protocol via libssh [no]
 264   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 265                            for DNN based filters like sr [no]
 266   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 267   --enable-libtheora       enable Theora encoding via libtheora [no]
 268   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 269                            if openssl, gnutls or mbedtls is not used [no]
 270   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 271   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 272   --enable-libvidstab      enable video stabilization using vid.stab [no]
 273   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 274   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 275   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 276                            native implementation exists [no]
 277   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 278   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 279   --enable-libwebp         enable WebP encoding via libwebp [no]
 280   --enable-libx264         enable H.264 encoding via x264 [no]
 281   --enable-libx265         enable HEVC encoding via x265 [no]
 282   --enable-libxavs         enable AVS encoding via xavs [no]
 283   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 284   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 285   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 286   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 287   --enable-libxvid         enable Xvid encoding via xvidcore,
 288                            native MPEG-4/Xvid encoder exists [no]
 289   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 290                            for dash demuxing support [no]
 291   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 292   --enable-libzmq          enable message passing via libzmq [no]
 293   --enable-libzvbi         enable teletext support via libzvbi [no]
 294   --enable-lv2             enable LV2 audio filtering [no]
 295   --disable-lzma           disable lzma [autodetect]
 296   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 297   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 298   --enable-mbedtls         enable mbedTLS, needed for https support
 299                            if openssl, gnutls or libtls is not used [no]
 300   --enable-mediacodec      enable Android MediaCodec support [no]
 301   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 302   --enable-openal          enable OpenAL 1.1 capture support [no]
 303   --enable-opencl          enable OpenCL processing [no]
 304   --enable-opengl          enable OpenGL rendering [no]
 305   --enable-openssl         enable openssl, needed for https support
 306                            if gnutls, libtls or mbedtls is not used [no]
 307   --disable-sndio          disable sndio support [autodetect]
 308   --disable-schannel       disable SChannel SSP, needed for TLS support on
 309                            Windows if openssl and gnutls are not used [autodetect]
 310   --disable-sdl2           disable sdl2 [autodetect]
 311   --disable-securetransport disable Secure Transport, needed for TLS support
 312                            on OSX if openssl and gnutls are not used [autodetect]
 313   --enable-vapoursynth     enable VapourSynth demuxer [no]
 314   --disable-xlib           disable xlib [autodetect]
 315   --disable-zlib           disable zlib [autodetect]
 316
 317   The following libraries provide various hardware acceleration features:
 318   --disable-amf            disable AMF video encoding code [autodetect]
 319   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 320   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 321   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 322   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 323   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 324   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 325   --enable-libdrm          enable DRM code (Linux) [no]
 326   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 327   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 328   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 329   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 330   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 331   --enable-omx             enable OpenMAX IL code [no]
 332   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 333   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 334   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 335   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 336   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 337   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 338
 339 Toolchain options:
 340   --arch=ARCH              select architecture [$arch]
 341   --cpu=CPU                select the minimum required CPU (affects
 342                            instruction selection, may crash on older CPUs)
 343   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 344   --progs-suffix=SUFFIX    program name suffix []
 345   --enable-cross-compile   assume a cross-compiler is used
 346   --sysroot=PATH           root of cross-build tree
 347   --sysinclude=PATH        location of cross-build system headers
 348   --target-os=OS           compiler targets OS [$target_os]
 349   --target-exec=CMD        command to run executables on target
 350   --target-path=DIR        path to view of build directory on target
 351   --target-samples=DIR     path to samples directory on target
 352   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 353   --toolchain=NAME         set tool defaults according to NAME
 354                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 355                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 356                            valgrind-massif, valgrind-memcheck,
 357                            msvc, icl, gcov, llvm-cov, hardened)
 358   --nm=NM                  use nm tool NM [$nm_default]
 359   --ar=AR                  use archive tool AR [$ar_default]
 360   --as=AS                  use assembler AS [$as_default]
 361   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 362   --strip=STRIP            use strip tool STRIP [$strip_default]
 363   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 364   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 365   --cc=CC                  use C compiler CC [$cc_default]
 366   --cxx=CXX                use C compiler CXX [$cxx_default]
 367   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 368   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 369   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 370   --ld=LD                  use linker LD [$ld_default]
 371   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 372   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 373   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 374   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 375   --host-cc=HOSTCC         use host C compiler HOSTCC
 376   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 377   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 378   --host-ld=HOSTLD         use host linker HOSTLD
 379   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 380   --host-libs=HLIBS        use libs HLIBS when linking for host
 381   --host-os=OS             compiler host OS [$target_os]
 382   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 383   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 384   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 385   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 386   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 387   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 388   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 389   --extra-version=STRING   version string suffix []
 390   --optflags=OPTFLAGS      override optimization-related compiler flags
 391   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 392   --build-suffix=SUFFIX    library name suffix []
 393   --enable-pic             build position-independent code
 394   --enable-thumb           compile for Thumb instruction set
 395   --enable-lto             use link-time optimization
 396   --env="ENV=override"     override the environment variables
 397
 398 Advanced options (experts only):
 399   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 400   --custom-allocator=NAME  use a supported custom allocator
 401   --disable-symver         disable symbol versioning
 402   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 403   --disable-safe-bitstream-reader
 404                            disable buffer boundary checking in bitreaders
 405                            (faster, but may crash)
 406   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 407
 408 Optimization options (experts only):
 409   --disable-asm            disable all assembly optimizations
 410   --disable-altivec        disable AltiVec optimizations
 411   --disable-vsx            disable VSX optimizations
 412   --disable-power8         disable POWER8 optimizations
 413   --disable-amd3dnow       disable 3DNow! optimizations
 414   --disable-amd3dnowext    disable 3DNow! extended optimizations
 415   --disable-mmx            disable MMX optimizations
 416   --disable-mmxext         disable MMXEXT optimizations
 417   --disable-sse            disable SSE optimizations
 418   --disable-sse2           disable SSE2 optimizations
 419   --disable-sse3           disable SSE3 optimizations
 420   --disable-ssse3          disable SSSE3 optimizations
 421   --disable-sse4           disable SSE4 optimizations
 422   --disable-sse42          disable SSE4.2 optimizations
 423   --disable-avx            disable AVX optimizations
 424   --disable-xop            disable XOP optimizations
 425   --disable-fma3           disable FMA3 optimizations
 426   --disable-fma4           disable FMA4 optimizations
 427   --disable-avx2           disable AVX2 optimizations
 428   --disable-avx512         disable AVX-512 optimizations
 429   --disable-aesni          disable AESNI optimizations
 430   --disable-armv5te        disable armv5te optimizations
 431   --disable-armv6          disable armv6 optimizations
 432   --disable-armv6t2        disable armv6t2 optimizations
 433   --disable-vfp            disable VFP optimizations
 434   --disable-neon           disable NEON optimizations
 435   --disable-inline-asm     disable use of inline assembly
 436   --disable-x86asm         disable use of standalone x86 assembly
 437   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 438   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 439   --disable-msa            disable MSA optimizations
 440   --disable-mipsfpu        disable floating point MIPS optimizations
 441   --disable-mmi            disable Loongson SIMD optimizations
 442   --disable-fast-unaligned consider unaligned accesses slow
 443
 444 Developer options (useful when working on FFmpeg itself):
 445   --disable-debug          disable debugging symbols
 446   --enable-debug=LEVEL     set the debug level [$debuglevel]
 447   --disable-optimizations  disable compiler optimizations
 448   --enable-extra-warnings  enable more compiler warnings
 449   --disable-stripping      disable stripping of executables and shared libraries
 450   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 451                            2 causes a slowdown at runtime.
 452   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 453   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 454                            leaks and errors, using the specified valgrind binary.
 455                            Cannot be combined with --target-exec
 456   --enable-ftrapv          Trap arithmetic overflows
 457   --samples=PATH           location of test samples for FATE, if not set use
 458                            \$FATE_SAMPLES at make invocation time.
 459   --enable-neon-clobber-test check NEON registers for clobbering (should be
 460                            used only for debugging purposes)
 461   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 462                            should be used only for debugging purposes)
 463   --enable-random          randomly enable/disable components
 464   --disable-random
 465   --enable-random=LIST     randomly enable/disable specific components or
 466   --disable-random=LIST    component groups. LIST is a comma-separated list
 467                            of NAME[:PROB] entries where NAME is a component
 468                            (group) and PROB the probability associated with
 469                            NAME (default 0.5).
 470   --random-seed=VALUE      seed value for --enable/disable-random
 471   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 472                            (only applies to --disable-optimizations builds)
 473   --enable-osfuzz          Enable building fuzzer tool
 474   --libfuzzer=PATH         path to libfuzzer
 475   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 476                            in the name) of tests whose result is ignored
 477   --enable-linux-perf      enable Linux Performance Monitor API
 478
 479 NOTE: Object files are built at the place where configure is launched.
 480 EOF
 481   exit 0
 482 }
 483
 484 if test -t 1 && which tput >/dev/null 2>&1; then
 485     ncolors=$(tput colors)
 486     if test -n "$ncolors" && test $ncolors -ge 8; then
 487         bold_color=$(tput bold)
 488         warn_color=$(tput setaf 3)
 489         error_color=$(tput setaf 1)
 490         reset_color=$(tput sgr0)
 491     fi
 492     # 72 used instead of 80 since that's the default of pr
 493     ncols=$(tput cols)
 494 fi
 495 : ${ncols:=72}
 496
 497 log(){
 498     echo "$@" >> $logfile
 499 }
 500
 501 log_file(){
 502     log BEGIN $1
 503     pr -n -t $1 >> $logfile
 504     log END $1
 505 }
 506
 507 warn(){
 508     log "WARNING: $*"
 509     WARNINGS="${WARNINGS}WARNING: $*\n"
 510 }
 511
 512 die(){
 513     log "$@"
 514     echo "$error_color$bold_color$@$reset_color"
 515     cat <<EOF
 516
 517 If you think configure made a mistake, make sure you are using the latest
 518 version from Git.  If the latest version fails, report the problem to the
 519 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 520 EOF
 521     if disabled logging; then
 522         cat <<EOF
 523 Rerun configure with logging enabled (do not use --disable-logging), and
 524 include the log this produces with your report.
 525 EOF
 526     else
 527         cat <<EOF
 528 Include the log file "$logfile" produced by configure as this will help
 529 solve the problem.
 530 EOF
 531     fi
 532     exit 1
 533 }
 534
 535 # Avoid locale weirdness, besides we really just want to translate ASCII.
 536 toupper(){
 537     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 538 }
 539
 540 tolower(){
 541     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 542 }
 543
 544 c_escape(){
 545     echo "$*" | sed 's/["\\]/\\\0/g'
 546 }
 547
 548 sh_quote(){
 549     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 550     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 551     echo "$v"
 552 }
 553
 554 cleanws(){
 555     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 556 }
 557
 558 filter(){
 559     pat=$1
 560     shift
 561     for v; do
 562         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 563     done
 564 }
 565
 566 filter_out(){
 567     pat=$1
 568     shift
 569     for v; do
 570         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 571     done
 572 }
 573
 574 map(){
 575     m=$1
 576     shift
 577     for v; do eval $m; done
 578 }
 579
 580 add_suffix(){
 581     suffix=$1
 582     shift
 583     for v; do echo ${v}${suffix}; done
 584 }
 585
 586 remove_suffix(){
 587     suffix=$1
 588     shift
 589     for v; do echo ${v%$suffix}; done
 590 }
 591
 592 set_all(){
 593     value=$1
 594     shift
 595     for var in $*; do
 596         eval $var=$value
 597     done
 598 }
 599
 600 set_weak(){
 601     value=$1
 602     shift
 603     for var; do
 604         eval : \${$var:=$value}
 605     done
 606 }
 607
 608 sanitize_var_name(){
 609     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 610 }
 611
 612 set_sanitized(){
 613     var=$1
 614     shift
 615     eval $(sanitize_var_name "$var")='$*'
 616 }
 617
 618 get_sanitized(){
 619     eval echo \$$(sanitize_var_name "$1")
 620 }
 621
 622 pushvar(){
 623     for pvar in $*; do
 624         eval level=\${${pvar}_level:=0}
 625         eval ${pvar}_${level}="\$$pvar"
 626         eval ${pvar}_level=$(($level+1))
 627     done
 628 }
 629
 630 popvar(){
 631     for pvar in $*; do
 632         eval level=\${${pvar}_level:-0}
 633         test $level = 0 && continue
 634         eval level=$(($level-1))
 635         eval $pvar="\${${pvar}_${level}}"
 636         eval ${pvar}_level=$level
 637         eval unset ${pvar}_${level}
 638     done
 639 }
 640
 641 request(){
 642     for var in $*; do
 643         eval ${var}_requested=yes
 644         eval $var=
 645     done
 646 }
 647
 648 enable(){
 649     set_all yes $*
 650 }
 651
 652 disable(){
 653     set_all no $*
 654 }
 655
 656 enable_weak(){
 657     set_weak yes $*
 658 }
 659
 660 disable_weak(){
 661     set_weak no $*
 662 }
 663
 664 enable_sanitized(){
 665     for var; do
 666         enable $(sanitize_var_name $var)
 667     done
 668 }
 669
 670 disable_sanitized(){
 671     for var; do
 672         disable $(sanitize_var_name $var)
 673     done
 674 }
 675
 676 do_enable_deep(){
 677     for var; do
 678         enabled $var && continue
 679         set -- $var
 680         eval enable_deep \$${var}_select
 681         var=$1
 682         eval enable_deep_weak \$${var}_suggest
 683     done
 684 }
 685
 686 enable_deep(){
 687     do_enable_deep $*
 688     enable $*
 689 }
 690
 691 enable_deep_weak(){
 692     for var; do
 693         disabled $var && continue
 694         set -- $var
 695         do_enable_deep $var
 696         var=$1
 697         enable_weak $var
 698     done
 699 }
 700
 701 requested(){
 702     test "${1#!}" = "$1" && op="=" || op="!="
 703     eval test "x\$${1#!}_requested" $op "xyes"
 704 }
 705
 706 enabled(){
 707     test "${1#!}" = "$1" && op="=" || op="!="
 708     eval test "x\$${1#!}" $op "xyes"
 709 }
 710
 711 disabled(){
 712     test "${1#!}" = "$1" && op="=" || op="!="
 713     eval test "x\$${1#!}" $op "xno"
 714 }
 715
 716 enabled_all(){
 717     for opt; do
 718         enabled $opt || return 1
 719     done
 720 }
 721
 722 disabled_all(){
 723     for opt; do
 724         disabled $opt || return 1
 725     done
 726 }
 727
 728 enabled_any(){
 729     for opt; do
 730         enabled $opt && return 0
 731     done
 732 }
 733
 734 disabled_any(){
 735     for opt; do
 736         disabled $opt && return 0
 737     done
 738     return 1
 739 }
 740
 741 set_default(){
 742     for opt; do
 743         eval : \${$opt:=\$${opt}_default}
 744     done
 745 }
 746
 747 is_in(){
 748     value=$1
 749     shift
 750     for var in $*; do
 751         [ $var = $value ] && return 0
 752     done
 753     return 1
 754 }
 755
 756 # The cfg loop is very hot (several thousands iterations), and in bash also
 757 # potentialy quite slow. Try to abort the iterations early, preferably without
 758 # calling functions. 70%+ of the time cfg is already done or without deps.
 759 check_deps(){
 760     for cfg; do
 761         eval [ x\$${cfg}_checking = xdone ] && continue
 762         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 763
 764         eval "
 765         dep_all=\$${cfg}_deps
 766         dep_any=\$${cfg}_deps_any
 767         dep_con=\$${cfg}_conflict
 768         dep_sel=\$${cfg}_select
 769         dep_sgs=\$${cfg}_suggest
 770         dep_ifa=\$${cfg}_if
 771         dep_ifn=\$${cfg}_if_any
 772         "
 773
 774         # most of the time here $cfg has no deps - avoid costly no-op work
 775         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 776             eval ${cfg}_checking=inprogress
 777
 778             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 779             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 780             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 781
 782             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 783             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 784             enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 785             enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 786             disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 787             disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 788
 789             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 790
 791             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 792                 # filter out library deps, these do not belong in extralibs
 793                 is_in $dep $LIBRARY_LIST && continue
 794                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 795             done
 796         fi
 797
 798         eval ${cfg}_checking=done
 799     done
 800 }
 801
 802 print_config(){
 803     pfx=$1
 804     files=$2
 805     shift 2
 806     map 'eval echo "$v \${$v:-no}"' "$@" |
 807     awk "BEGIN { split(\"$files\", files) }
 808         {
 809             c = \"$pfx\" toupper(\$1);
 810             v = \$2;
 811             sub(/yes/, 1, v);
 812             sub(/no/,  0, v);
 813             for (f in files) {
 814                 file = files[f];
 815                 if (file ~ /\\.h\$/) {
 816                     printf(\"#define %s %d\\n\", c, v) >>file;
 817                 } else if (file ~ /\\.asm\$/) {
 818                     printf(\"%%define %s %d\\n\", c, v) >>file;
 819                 } else if (file ~ /\\.mak\$/) {
 820                     n = -v ? \"\" : \"!\";
 821                     printf(\"%s%s=yes\\n\", n, c) >>file;
 822                 } else if (file ~ /\\.texi\$/) {
 823                     pre = -v ? \"\" : \"@c \";
 824                     yesno = \$2;
 825                     c2 = tolower(c);
 826                     gsub(/_/, \"-\", c2);
 827                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 828                 }
 829             }
 830         }"
 831 }
 832
 833 print_enabled(){
 834     suf=$1
 835     shift
 836     for v; do
 837         enabled $v && printf "%s\n" ${v%$suf}
 838     done
 839 }
 840
 841 append(){
 842     var=$1
 843     shift
 844     eval "$var=\"\$$var $*\""
 845 }
 846
 847 prepend(){
 848     var=$1
 849     shift
 850     eval "$var=\"$* \$$var\""
 851 }
 852
 853 reverse () {
 854     eval '
 855         reverse_out=
 856         for v in $'$1'; do
 857             reverse_out="$v $reverse_out"
 858         done
 859         '$1'=$reverse_out
 860     '
 861 }
 862
 863 # keeps the last occurence of each non-unique item
 864 unique(){
 865     unique_out=
 866     eval unique_in=\$$1
 867     reverse unique_in
 868     for v in $unique_in; do
 869         # " $unique_out" +space such that every item is surrounded with spaces
 870         case " $unique_out" in *" $v "*) continue; esac  # already in list
 871         unique_out="$unique_out$v "
 872     done
 873     reverse unique_out
 874     eval $1=\$unique_out
 875 }
 876
 877 resolve(){
 878     resolve_out=
 879     eval resolve_in=\$$1
 880     for v in $resolve_in; do
 881         eval 'resolve_out="$resolve_out$'$v' "'
 882     done
 883     eval $1=\$resolve_out
 884 }
 885
 886 add_cppflags(){
 887     append CPPFLAGS "$@"
 888 }
 889
 890 add_cflags(){
 891     append CFLAGS $($cflags_filter "$@")
 892 }
 893
 894 add_cflags_headers(){
 895     append CFLAGS_HEADERS $($cflags_filter "$@")
 896 }
 897
 898 add_cxxflags(){
 899     append CXXFLAGS $($cflags_filter "$@")
 900 }
 901
 902 add_asflags(){
 903     append ASFLAGS $($asflags_filter "$@")
 904 }
 905
 906 add_objcflags(){
 907     append OBJCFLAGS $($objcflags_filter "$@")
 908 }
 909
 910 add_ldflags(){
 911     append LDFLAGS $($ldflags_filter "$@")
 912 }
 913
 914 add_ldexeflags(){
 915     append LDEXEFLAGS $($ldflags_filter "$@")
 916 }
 917
 918 add_ldsoflags(){
 919     append LDSOFLAGS $($ldflags_filter "$@")
 920 }
 921
 922 add_stripflags(){
 923     append ASMSTRIPFLAGS "$@"
 924 }
 925
 926 add_extralibs(){
 927     prepend extralibs $($ldflags_filter "$@")
 928 }
 929
 930 add_host_cppflags(){
 931     append host_cppflags "$@"
 932 }
 933
 934 add_host_cflags(){
 935     append host_cflags $($host_cflags_filter "$@")
 936 }
 937
 938 add_host_ldflags(){
 939     append host_ldflags $($host_ldflags_filter "$@")
 940 }
 941
 942 add_compat(){
 943     append compat_objs $1
 944     shift
 945     map 'add_cppflags -D$v' "$@"
 946 }
 947
 948 test_cmd(){
 949     log "$@"
 950     "$@" >> $logfile 2>&1
 951 }
 952
 953 test_stat(){
 954     log test_stat "$@"
 955     stat "$1" >> $logfile 2>&1
 956 }
 957
 958 cc_o(){
 959     eval printf '%s\\n' $CC_O
 960 }
 961
 962 cc_e(){
 963     eval printf '%s\\n' $CC_E
 964 }
 965
 966 test_cc(){
 967     log test_cc "$@"
 968     cat > $TMPC
 969     log_file $TMPC
 970     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 971 }
 972
 973 test_cxx(){
 974     log test_cxx "$@"
 975     cat > $TMPCPP
 976     log_file $TMPCPP
 977     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 978 }
 979
 980 test_objcc(){
 981     log test_objcc "$@"
 982     cat > $TMPM
 983     log_file $TMPM
 984     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 985 }
 986
 987 test_cpp(){
 988     log test_cpp "$@"
 989     cat > $TMPC
 990     log_file $TMPC
 991     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 992 }
 993
 994 as_o(){
 995     eval printf '%s\\n' $AS_O
 996 }
 997
 998 test_as(){
 999     log test_as "$@"
1000     cat > $TMPS
1001     log_file $TMPS
1002     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1003 }
1004
1005 x86asm_o(){
1006     eval printf '%s\\n' $X86ASM_O
1007 }
1008
1009 test_x86asm(){
1010     log test_x86asm "$@"
1011     echo "$1" > $TMPASM
1012     log_file $TMPASM
1013     shift
1014     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1015 }
1016
1017 check_cmd(){
1018     log check_cmd "$@"
1019     cmd=$1
1020     disabled $cmd && return
1021     disable $cmd
1022     test_cmd $@ && enable $cmd
1023 }
1024
1025 check_as(){
1026     log check_as "$@"
1027     name=$1
1028     code=$2
1029     shift 2
1030     disable $name
1031     test_as $@ <<EOF && enable $name
1032 $code
1033 EOF
1034 }
1035
1036 check_inline_asm(){
1037     log check_inline_asm "$@"
1038     name="$1"
1039     code="$2"
1040     shift 2
1041     disable $name
1042     test_cc "$@" <<EOF && enable $name
1043 void foo(void){ __asm__ volatile($code); }
1044 EOF
1045 }
1046
1047 check_inline_asm_flags(){
1048     log check_inline_asm_flags "$@"
1049     name="$1"
1050     code="$2"
1051     flags=''
1052     shift 2
1053     while [ "$1" != "" ]; do
1054       append flags $1
1055       shift
1056     done;
1057     disable $name
1058     cat > $TMPC <<EOF
1059 void foo(void){ __asm__ volatile($code); }
1060 EOF
1061     log_file $TMPC
1062     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1063     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1064 }
1065
1066 check_insn(){
1067     log check_insn "$@"
1068     check_inline_asm ${1}_inline "\"$2\""
1069     check_as ${1}_external "$2"
1070 }
1071
1072 check_x86asm(){
1073     log check_x86asm "$@"
1074     name=$1
1075     shift
1076     disable $name
1077     test_x86asm "$@" && enable $name
1078 }
1079
1080 ld_o(){
1081     eval printf '%s\\n' $LD_O
1082 }
1083
1084 test_ld(){
1085     log test_ld "$@"
1086     type=$1
1087     shift 1
1088     flags=$(filter_out '-l*|*.so' $@)
1089     libs=$(filter '-l*|*.so' $@)
1090     test_$type $($cflags_filter $flags) || return
1091     flags=$($ldflags_filter $flags)
1092     libs=$($ldflags_filter $libs)
1093     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1094 }
1095
1096 check_ld(){
1097     log check_ld "$@"
1098     type=$1
1099     name=$2
1100     shift 2
1101     disable $name
1102     test_ld $type $@ && enable $name
1103 }
1104
1105 print_include(){
1106     hdr=$1
1107     test "${hdr%.h}" = "${hdr}" &&
1108         echo "#include $hdr"    ||
1109         echo "#include <$hdr>"
1110 }
1111
1112 test_code(){
1113     log test_code "$@"
1114     check=$1
1115     headers=$2
1116     code=$3
1117     shift 3
1118     {
1119         for hdr in $headers; do
1120             print_include $hdr
1121         done
1122         echo "int main(void) { $code; return 0; }"
1123     } | test_$check "$@"
1124 }
1125
1126 check_cppflags(){
1127     log check_cppflags "$@"
1128     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1129 #include <stdlib.h>
1130 EOF
1131 }
1132
1133 test_cflags(){
1134     log test_cflags "$@"
1135     set -- $($cflags_filter "$@")
1136     test_cc "$@" <<EOF
1137 int x;
1138 EOF
1139 }
1140
1141 check_cflags(){
1142     log check_cflags "$@"
1143     test_cflags "$@" && add_cflags "$@"
1144 }
1145
1146 check_cxxflags(){
1147     log check_cxxflags "$@"
1148     set -- $($cflags_filter "$@")
1149     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1150 int x;
1151 EOF
1152 }
1153
1154 test_objcflags(){
1155     log test_objcflags "$@"
1156     set -- $($objcflags_filter "$@")
1157     test_objcc "$@" <<EOF
1158 int x;
1159 EOF
1160 }
1161
1162 check_objcflags(){
1163     log check_objcflags "$@"
1164     test_objcflags "$@" && add_objcflags "$@"
1165 }
1166
1167 test_ldflags(){
1168     log test_ldflags "$@"
1169     set -- $($ldflags_filter "$@")
1170     test_ld "cc" "$@" <<EOF
1171 int main(void){ return 0; }
1172 EOF
1173 }
1174
1175 check_ldflags(){
1176     log check_ldflags "$@"
1177     test_ldflags "$@" && add_ldflags "$@"
1178 }
1179
1180 test_stripflags(){
1181     log test_stripflags "$@"
1182     # call test_cc to get a fresh TMPO
1183     test_cc <<EOF
1184 int main(void) { return 0; }
1185 EOF
1186     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1187 }
1188
1189 check_stripflags(){
1190     log check_stripflags "$@"
1191     test_stripflags "$@" && add_stripflags "$@"
1192 }
1193
1194 check_header(){
1195     log check_header "$@"
1196     headers=$1
1197     shift
1198     disable_sanitized $headers
1199     {
1200         for hdr in $headers; do
1201             print_include $hdr
1202         done
1203         echo "int x;"
1204     } | test_cpp "$@" && enable_sanitized $headers
1205 }
1206
1207 check_header_objcc(){
1208     log check_header_objcc "$@"
1209     rm -f -- "$TMPO"
1210     header=$1
1211     shift
1212     disable_sanitized $header
1213     {
1214        echo "#include <$header>"
1215        echo "int main(void) { return 0; }"
1216     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1217 }
1218
1219 check_apple_framework(){
1220     log check_apple_framework "$@"
1221     framework="$1"
1222     name="$(tolower $framework)"
1223     header="${framework}/${framework}.h"
1224     disable $name
1225     check_header_objcc $header &&
1226         enable $name && eval ${name}_extralibs='"-framework $framework"'
1227 }
1228
1229 check_func(){
1230     log check_func "$@"
1231     func=$1
1232     shift
1233     disable $func
1234     test_ld "cc" "$@" <<EOF && enable $func
1235 extern int $func();
1236 int main(void){ $func(); }
1237 EOF
1238 }
1239
1240 check_complexfunc(){
1241     log check_complexfunc "$@"
1242     func=$1
1243     narg=$2
1244     shift 2
1245     test $narg = 2 && args="f, g" || args="f * I"
1246     disable $func
1247     test_ld "cc" "$@" <<EOF && enable $func
1248 #include <complex.h>
1249 #include <math.h>
1250 float foo(complex float f, complex float g) { return $func($args); }
1251 int main(void){ return (int) foo; }
1252 EOF
1253 }
1254
1255 check_mathfunc(){
1256     log check_mathfunc "$@"
1257     func=$1
1258     narg=$2
1259     shift 2
1260     test $narg = 2 && args="f, g" || args="f"
1261     disable $func
1262     test_ld "cc" "$@" <<EOF && enable $func
1263 #include <math.h>
1264 float foo(float f, float g) { return $func($args); }
1265 int main(void){ return (int) foo; }
1266 EOF
1267 }
1268
1269 check_func_headers(){
1270     log check_func_headers "$@"
1271     headers=$1
1272     funcs=$2
1273     shift 2
1274     {
1275         for hdr in $headers; do
1276             print_include $hdr
1277         done
1278         echo "#include <stdint.h>"
1279         for func in $funcs; do
1280             echo "long check_$func(void) { return (long) $func; }"
1281         done
1282         echo "int main(void) { int ret = 0;"
1283         # LTO could optimize out the test functions without this
1284         for func in $funcs; do
1285             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1286         done
1287         echo "return ret; }"
1288     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1289 }
1290
1291 check_class_headers_cpp(){
1292     log check_class_headers_cpp "$@"
1293     headers=$1
1294     classes=$2
1295     shift 2
1296     {
1297         for hdr in $headers; do
1298             echo "#include <$hdr>"
1299         done
1300         echo "int main(void) { "
1301         i=1
1302         for class in $classes; do
1303             echo "$class obj$i;"
1304             i=$(expr $i + 1)
1305         done
1306         echo "return 0; }"
1307     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1308 }
1309
1310 test_cpp_condition(){
1311     log test_cpp_condition "$@"
1312     header=$1
1313     condition=$2
1314     shift 2
1315     test_cpp "$@" <<EOF
1316 #include <$header>
1317 #if !($condition)
1318 #error "unsatisfied condition: $condition"
1319 #endif
1320 EOF
1321 }
1322
1323 check_cpp_condition(){
1324     log check_cpp_condition "$@"
1325     name=$1
1326     shift 1
1327     disable $name
1328     test_cpp_condition "$@" && enable $name
1329 }
1330
1331 test_cflags_cc(){
1332     log test_cflags_cc "$@"
1333     flags=$1
1334     header=$2
1335     condition=$3
1336     shift 3
1337     set -- $($cflags_filter "$flags")
1338     test_cc "$@" <<EOF
1339 #include <$header>
1340 #if !($condition)
1341 #error "unsatisfied condition: $condition"
1342 #endif
1343 EOF
1344 }
1345
1346 check_lib(){
1347     log check_lib "$@"
1348     name="$1"
1349     headers="$2"
1350     funcs="$3"
1351     shift 3
1352     disable $name
1353     check_func_headers "$headers" "$funcs" "$@" &&
1354         enable $name && eval ${name}_extralibs="\$@"
1355 }
1356
1357 check_lib_cpp(){
1358     log check_lib_cpp "$@"
1359     name="$1"
1360     headers="$2"
1361     classes="$3"
1362     shift 3
1363     disable $name
1364     check_class_headers_cpp "$headers" "$classes" "$@" &&
1365         enable $name && eval ${name}_extralibs="\$@"
1366 }
1367
1368 test_pkg_config(){
1369     log test_pkg_config "$@"
1370     name="$1"
1371     pkg_version="$2"
1372     pkg="${2%% *}"
1373     headers="$3"
1374     funcs="$4"
1375     shift 4
1376     disable $name
1377     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1378     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1379     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1380     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1381         enable $name &&
1382         set_sanitized "${name}_cflags"    $pkg_cflags &&
1383         set_sanitized "${name}_extralibs" $pkg_libs
1384 }
1385
1386 check_pkg_config(){
1387     log check_pkg_config "$@"
1388     name="$1"
1389     test_pkg_config "$@" &&
1390         eval add_cflags \$${name}_cflags
1391 }
1392
1393 test_exec(){
1394     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1395 }
1396
1397 check_exec_crash(){
1398     log check_exec_crash "$@"
1399     code=$(cat)
1400
1401     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1402     # are safe but may not be available everywhere.  Thus we use
1403     # raise(SIGTERM) instead.  The check is run in a subshell so we
1404     # can redirect the "Terminated" message from the shell.  SIGBUS
1405     # is not defined by standard C so it is used conditionally.
1406
1407     (test_exec "$@") >> $logfile 2>&1 <<EOF
1408 #include <signal.h>
1409 static void sighandler(int sig){
1410     raise(SIGTERM);
1411 }
1412 int foo(void){
1413     $code
1414 }
1415 int (*func_ptr)(void) = foo;
1416 int main(void){
1417     signal(SIGILL, sighandler);
1418     signal(SIGFPE, sighandler);
1419     signal(SIGSEGV, sighandler);
1420 #ifdef SIGBUS
1421     signal(SIGBUS, sighandler);
1422 #endif
1423     return func_ptr();
1424 }
1425 EOF
1426 }
1427
1428 check_type(){
1429     log check_type "$@"
1430     headers=$1
1431     type=$2
1432     shift 2
1433     disable_sanitized "$type"
1434     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1435 }
1436
1437 check_struct(){
1438     log check_struct "$@"
1439     headers=$1
1440     struct=$2
1441     member=$3
1442     shift 3
1443     disable_sanitized "${struct}_${member}"
1444     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1445         enable_sanitized "${struct}_${member}"
1446 }
1447
1448 check_builtin(){
1449     log check_builtin "$@"
1450     name=$1
1451     headers=$2
1452     builtin=$3
1453     shift 3
1454     disable "$name"
1455     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1456 }
1457
1458 check_compile_assert(){
1459     log check_compile_assert "$@"
1460     name=$1
1461     headers=$2
1462     condition=$3
1463     shift 3
1464     disable "$name"
1465     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1466 }
1467
1468 check_cc(){
1469     log check_cc "$@"
1470     name=$1
1471     shift
1472     disable "$name"
1473     test_code cc "$@" && enable "$name"
1474 }
1475
1476 require(){
1477     log require "$@"
1478     name_version="$1"
1479     name="${1%% *}"
1480     shift
1481     check_lib $name "$@" || die "ERROR: $name_version not found"
1482 }
1483
1484 require_cc(){
1485     log require_cc "$@"
1486     name="$1"
1487     shift
1488     test_code cc "$@" || die "ERROR: $name failed"
1489 }
1490
1491 require_cpp(){
1492     name="$1"
1493     headers="$2"
1494     classes="$3"
1495     shift 3
1496     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1497 }
1498
1499 require_header(){
1500     log require_header "$@"
1501     headers="$1"
1502     check_header "$@" || die "ERROR: $headers not found"
1503 }
1504
1505 require_cpp_condition(){
1506     log require_cpp_condition "$@"
1507     condition="$2"
1508     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1509 }
1510
1511 require_pkg_config(){
1512     log require_pkg_config "$@"
1513     pkg_version="$2"
1514     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1515 }
1516
1517 hostcc_e(){
1518     eval printf '%s\\n' $HOSTCC_E
1519 }
1520
1521 hostcc_o(){
1522     eval printf '%s\\n' $HOSTCC_O
1523 }
1524
1525 test_host_cc(){
1526     log test_host_cc "$@"
1527     cat > $TMPC
1528     log_file $TMPC
1529     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1530 }
1531
1532 test_host_cpp(){
1533     log test_host_cpp "$@"
1534     cat > $TMPC
1535     log_file $TMPC
1536     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1537 }
1538
1539 check_host_cppflags(){
1540     log check_host_cppflags "$@"
1541     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1542 #include <stdlib.h>
1543 EOF
1544 }
1545
1546 check_host_cflags(){
1547     log check_host_cflags "$@"
1548     set -- $($host_cflags_filter "$@")
1549     test_host_cc "$@" <<EOF && append host_cflags "$@"
1550 int x;
1551 EOF
1552 }
1553
1554 test_host_cpp_condition(){
1555     log test_host_cpp_condition "$@"
1556     header=$1
1557     condition=$2
1558     shift 2
1559     test_host_cpp "$@" <<EOF
1560 #include <$header>
1561 #if !($condition)
1562 #error "unsatisfied condition: $condition"
1563 #endif
1564 EOF
1565 }
1566
1567 check_host_cpp_condition(){
1568     log check_host_cpp_condition "$@"
1569     name=$1
1570     shift 1
1571     disable $name
1572     test_host_cpp_condition "$@" && enable $name
1573 }
1574
1575 cp_if_changed(){
1576     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1577     mkdir -p "$(dirname $2)"
1578     cp -f "$1" "$2"
1579 }
1580
1581 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1582 # system-dependent things.
1583
1584 AVCODEC_COMPONENTS="
1585     bsfs
1586     decoders
1587     encoders
1588     hwaccels
1589     parsers
1590 "
1591
1592 AVDEVICE_COMPONENTS="
1593     indevs
1594     outdevs
1595 "
1596
1597 AVFILTER_COMPONENTS="
1598     filters
1599 "
1600
1601 AVFORMAT_COMPONENTS="
1602     demuxers
1603     muxers
1604     protocols
1605 "
1606
1607 COMPONENT_LIST="
1608     $AVCODEC_COMPONENTS
1609     $AVDEVICE_COMPONENTS
1610     $AVFILTER_COMPONENTS
1611     $AVFORMAT_COMPONENTS
1612 "
1613
1614 EXAMPLE_LIST="
1615     avio_dir_cmd_example
1616     avio_reading_example
1617     decode_audio_example
1618     decode_video_example
1619     demuxing_decoding_example
1620     encode_audio_example
1621     encode_video_example
1622     extract_mvs_example
1623     filter_audio_example
1624     filtering_audio_example
1625     filtering_video_example
1626     http_multiclient_example
1627     hw_decode_example
1628     metadata_example
1629     muxing_example
1630     qsvdec_example
1631     remuxing_example
1632     resampling_audio_example
1633     scaling_video_example
1634     transcode_aac_example
1635     transcoding_example
1636     vaapi_encode_example
1637     vaapi_transcode_example
1638 "
1639
1640 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1641     alsa
1642     appkit
1643     avfoundation
1644     bzlib
1645     coreimage
1646     iconv
1647     libxcb
1648     libxcb_shm
1649     libxcb_shape
1650     libxcb_xfixes
1651     lzma
1652     schannel
1653     sdl2
1654     securetransport
1655     sndio
1656     xlib
1657     zlib
1658 "
1659
1660 EXTERNAL_LIBRARY_GPL_LIST="
1661     avisynth
1662     frei0r
1663     libcdio
1664     libdavs2
1665     librubberband
1666     libvidstab
1667     libx264
1668     libx265
1669     libxavs
1670     libxvid
1671 "
1672
1673 EXTERNAL_LIBRARY_NONFREE_LIST="
1674     decklink
1675     libndi_newtek
1676     libfdk_aac
1677     openssl
1678     libtls
1679 "
1680
1681 EXTERNAL_LIBRARY_VERSION3_LIST="
1682     gmp
1683     liblensfun
1684     libopencore_amrnb
1685     libopencore_amrwb
1686     libvmaf
1687     libvo_amrwbenc
1688     mbedtls
1689     rkmpp
1690 "
1691
1692 EXTERNAL_LIBRARY_GPLV3_LIST="
1693     libsmbclient
1694 "
1695
1696 EXTERNAL_LIBRARY_LIST="
1697     $EXTERNAL_LIBRARY_GPL_LIST
1698     $EXTERNAL_LIBRARY_NONFREE_LIST
1699     $EXTERNAL_LIBRARY_VERSION3_LIST
1700     $EXTERNAL_LIBRARY_GPLV3_LIST
1701     chromaprint
1702     gcrypt
1703     gnutls
1704     jni
1705     ladspa
1706     libaom
1707     libass
1708     libbluray
1709     libbs2b
1710     libcaca
1711     libcelt
1712     libcodec2
1713     libdc1394
1714     libdrm
1715     libflite
1716     libfontconfig
1717     libfreetype
1718     libfribidi
1719     libgme
1720     libgsm
1721     libiec61883
1722     libilbc
1723     libjack
1724     libkvazaar
1725     libmodplug
1726     libmp3lame
1727     libmysofa
1728     libopencv
1729     libopenh264
1730     libopenjpeg
1731     libopenmpt
1732     libopus
1733     libpulse
1734     librsvg
1735     librtmp
1736     libshine
1737     libsmbclient
1738     libsnappy
1739     libsoxr
1740     libspeex
1741     libsrt
1742     libssh
1743     libtensorflow
1744     libtesseract
1745     libtheora
1746     libtwolame
1747     libv4l2
1748     libvorbis
1749     libvpx
1750     libwavpack
1751     libwebp
1752     libxml2
1753     libzimg
1754     libzmq
1755     libzvbi
1756     lv2
1757     mediacodec
1758     openal
1759     opengl
1760     vapoursynth
1761 "
1762
1763 HWACCEL_AUTODETECT_LIBRARY_LIST="
1764     amf
1765     audiotoolbox
1766     crystalhd
1767     cuda
1768     cuvid
1769     d3d11va
1770     dxva2
1771     ffnvcodec
1772     nvdec
1773     nvenc
1774     vaapi
1775     vdpau
1776     videotoolbox
1777     v4l2_m2m
1778     xvmc
1779 "
1780
1781 # catchall list of things that require external libs to link
1782 EXTRALIBS_LIST="
1783     cpu_init
1784     cws2fws
1785 "
1786
1787 HWACCEL_LIBRARY_NONFREE_LIST="
1788     cuda_sdk
1789     libnpp
1790 "
1791
1792 HWACCEL_LIBRARY_LIST="
1793     $HWACCEL_LIBRARY_NONFREE_LIST
1794     libmfx
1795     mmal
1796     omx
1797     opencl
1798 "
1799
1800 DOCUMENT_LIST="
1801     doc
1802     htmlpages
1803     manpages
1804     podpages
1805     txtpages
1806 "
1807
1808 FEATURE_LIST="
1809     ftrapv
1810     gray
1811     hardcoded_tables
1812     omx_rpi
1813     runtime_cpudetect
1814     safe_bitstream_reader
1815     shared
1816     small
1817     static
1818     swscale_alpha
1819 "
1820
1821 LIBRARY_LIST="
1822     avcodec
1823     avdevice
1824     avfilter
1825     avformat
1826     avresample
1827     avutil
1828     postproc
1829     swresample
1830     swscale
1831 "
1832
1833 LICENSE_LIST="
1834     gpl
1835     nonfree
1836     version3
1837 "
1838
1839 PROGRAM_LIST="
1840     ffplay
1841     ffprobe
1842     ffmpeg
1843 "
1844
1845 SUBSYSTEM_LIST="
1846     dct
1847     dwt
1848     error_resilience
1849     faan
1850     fast_unaligned
1851     fft
1852     lsp
1853     lzo
1854     mdct
1855     pixelutils
1856     network
1857     rdft
1858 "
1859
1860 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1861 CONFIG_LIST="
1862     $DOCUMENT_LIST
1863     $EXAMPLE_LIST
1864     $EXTERNAL_LIBRARY_LIST
1865     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1866     $HWACCEL_LIBRARY_LIST
1867     $HWACCEL_AUTODETECT_LIBRARY_LIST
1868     $FEATURE_LIST
1869     $LICENSE_LIST
1870     $LIBRARY_LIST
1871     $PROGRAM_LIST
1872     $SUBSYSTEM_LIST
1873     autodetect
1874     fontconfig
1875     linux_perf
1876     memory_poisoning
1877     neon_clobber_test
1878     ossfuzz
1879     pic
1880     thumb
1881     valgrind_backtrace
1882     xmm_clobber_test
1883     $COMPONENT_LIST
1884 "
1885
1886 THREADS_LIST="
1887     pthreads
1888     os2threads
1889     w32threads
1890 "
1891
1892 ATOMICS_LIST="
1893     atomics_gcc
1894     atomics_suncc
1895     atomics_win32
1896 "
1897
1898 AUTODETECT_LIBS="
1899     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1900     $HWACCEL_AUTODETECT_LIBRARY_LIST
1901     $THREADS_LIST
1902 "
1903
1904 ARCH_LIST="
1905     aarch64
1906     alpha
1907     arm
1908     avr32
1909     avr32_ap
1910     avr32_uc
1911     bfin
1912     ia64
1913     m68k
1914     mips
1915     mips64
1916     parisc
1917     ppc
1918     ppc64
1919     s390
1920     sh4
1921     sparc
1922     sparc64
1923     tilegx
1924     tilepro
1925     tomi
1926     x86
1927     x86_32
1928     x86_64
1929 "
1930
1931 ARCH_EXT_LIST_ARM="
1932     armv5te
1933     armv6
1934     armv6t2
1935     armv8
1936     neon
1937     vfp
1938     vfpv3
1939     setend
1940 "
1941
1942 ARCH_EXT_LIST_MIPS="
1943     mipsfpu
1944     mips32r2
1945     mips32r5
1946     mips64r2
1947     mips32r6
1948     mips64r6
1949     mipsdsp
1950     mipsdspr2
1951     msa
1952 "
1953
1954 ARCH_EXT_LIST_LOONGSON="
1955     loongson2
1956     loongson3
1957     mmi
1958 "
1959
1960 ARCH_EXT_LIST_X86_SIMD="
1961     aesni
1962     amd3dnow
1963     amd3dnowext
1964     avx
1965     avx2
1966     avx512
1967     fma3
1968     fma4
1969     mmx
1970     mmxext
1971     sse
1972     sse2
1973     sse3
1974     sse4
1975     sse42
1976     ssse3
1977     xop
1978 "
1979
1980 ARCH_EXT_LIST_PPC="
1981     altivec
1982     dcbzl
1983     ldbrx
1984     power8
1985     ppc4xx
1986     vsx
1987 "
1988
1989 ARCH_EXT_LIST_X86="
1990     $ARCH_EXT_LIST_X86_SIMD
1991     cpunop
1992     i686
1993 "
1994
1995 ARCH_EXT_LIST="
1996     $ARCH_EXT_LIST_ARM
1997     $ARCH_EXT_LIST_PPC
1998     $ARCH_EXT_LIST_X86
1999     $ARCH_EXT_LIST_MIPS
2000     $ARCH_EXT_LIST_LOONGSON
2001 "
2002
2003 ARCH_FEATURES="
2004     aligned_stack
2005     fast_64bit
2006     fast_clz
2007     fast_cmov
2008     local_aligned
2009     simd_align_16
2010     simd_align_32
2011     simd_align_64
2012 "
2013
2014 BUILTIN_LIST="
2015     atomic_cas_ptr
2016     machine_rw_barrier
2017     MemoryBarrier
2018     mm_empty
2019     rdtsc
2020     sem_timedwait
2021     sync_val_compare_and_swap
2022 "
2023 HAVE_LIST_CMDLINE="
2024     inline_asm
2025     symver
2026     x86asm
2027 "
2028
2029 HAVE_LIST_PUB="
2030     bigendian
2031     fast_unaligned
2032 "
2033
2034 HEADERS_LIST="
2035     arpa_inet_h
2036     asm_types_h
2037     cdio_paranoia_h
2038     cdio_paranoia_paranoia_h
2039     cuda_h
2040     dispatch_dispatch_h
2041     dev_bktr_ioctl_bt848_h
2042     dev_bktr_ioctl_meteor_h
2043     dev_ic_bt8xx_h
2044     dev_video_bktr_ioctl_bt848_h
2045     dev_video_meteor_ioctl_meteor_h
2046     direct_h
2047     dirent_h
2048     dxgidebug_h
2049     dxva_h
2050     ES2_gl_h
2051     gsm_h
2052     io_h
2053     linux_perf_event_h
2054     machine_ioctl_bt848_h
2055     machine_ioctl_meteor_h
2056     malloc_h
2057     opencv2_core_core_c_h
2058     OpenGL_gl3_h
2059     poll_h
2060     sys_param_h
2061     sys_resource_h
2062     sys_select_h
2063     sys_soundcard_h
2064     sys_time_h
2065     sys_un_h
2066     sys_videoio_h
2067     termios_h
2068     udplite_h
2069     unistd_h
2070     valgrind_valgrind_h
2071     windows_h
2072     winsock2_h
2073 "
2074
2075 INTRINSICS_LIST="
2076     intrinsics_neon
2077 "
2078
2079 COMPLEX_FUNCS="
2080     cabs
2081     cexp
2082 "
2083
2084 MATH_FUNCS="
2085     atanf
2086     atan2f
2087     cbrt
2088     cbrtf
2089     copysign
2090     cosf
2091     erf
2092     exp2
2093     exp2f
2094     expf
2095     hypot
2096     isfinite
2097     isinf
2098     isnan
2099     ldexpf
2100     llrint
2101     llrintf
2102     log2
2103     log2f
2104     log10f
2105     lrint
2106     lrintf
2107     powf
2108     rint
2109     round
2110     roundf
2111     sinf
2112     trunc
2113     truncf
2114 "
2115
2116 SYSTEM_FEATURES="
2117     dos_paths
2118     libc_msvcrt
2119     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2120     section_data_rel_ro
2121     threads
2122     uwp
2123     winrt
2124 "
2125
2126 SYSTEM_FUNCS="
2127     access
2128     aligned_malloc
2129     arc4random
2130     clock_gettime
2131     closesocket
2132     CommandLineToArgvW
2133     fcntl
2134     getaddrinfo
2135     gethrtime
2136     getopt
2137     GetProcessAffinityMask
2138     GetProcessMemoryInfo
2139     GetProcessTimes
2140     getrusage
2141     GetSystemTimeAsFileTime
2142     gettimeofday
2143     glob
2144     glXGetProcAddress
2145     gmtime_r
2146     inet_aton
2147     isatty
2148     kbhit
2149     localtime_r
2150     lstat
2151     lzo1x_999_compress
2152     mach_absolute_time
2153     MapViewOfFile
2154     memalign
2155     mkstemp
2156     mmap
2157     mprotect
2158     nanosleep
2159     PeekNamedPipe
2160     posix_memalign
2161     pthread_cancel
2162     sched_getaffinity
2163     SecItemImport
2164     SetConsoleTextAttribute
2165     SetConsoleCtrlHandler
2166     setmode
2167     setrlimit
2168     Sleep
2169     strerror_r
2170     sysconf
2171     sysctl
2172     usleep
2173     UTGetOSTypeFromString
2174     VirtualAlloc
2175     wglGetProcAddress
2176 "
2177
2178 SYSTEM_LIBRARIES="
2179     bcrypt
2180     vaapi_drm
2181     vaapi_x11
2182     vdpau_x11
2183 "
2184
2185 TOOLCHAIN_FEATURES="
2186     as_arch_directive
2187     as_dn_directive
2188     as_fpu_directive
2189     as_func
2190     as_object_arch
2191     asm_mod_q
2192     blocks_extension
2193     ebp_available
2194     ebx_available
2195     gnu_as
2196     gnu_windres
2197     ibm_asm
2198     inline_asm_direct_symbol_refs
2199     inline_asm_labels
2200     inline_asm_nonlocal_labels
2201     pragma_deprecated
2202     rsync_contimeout
2203     symver_asm_label
2204     symver_gnu_asm
2205     vfp_args
2206     xform_asm
2207     xmm_clobbers
2208 "
2209
2210 TYPES_LIST="
2211     kCMVideoCodecType_HEVC
2212     socklen_t
2213     struct_addrinfo
2214     struct_group_source_req
2215     struct_ip_mreq_source
2216     struct_ipv6_mreq
2217     struct_msghdr_msg_flags
2218     struct_pollfd
2219     struct_rusage_ru_maxrss
2220     struct_sctp_event_subscribe
2221     struct_sockaddr_in6
2222     struct_sockaddr_sa_len
2223     struct_sockaddr_storage
2224     struct_stat_st_mtim_tv_nsec
2225     struct_v4l2_frmivalenum_discrete
2226 "
2227
2228 HAVE_LIST="
2229     $ARCH_EXT_LIST
2230     $(add_suffix _external $ARCH_EXT_LIST)
2231     $(add_suffix _inline   $ARCH_EXT_LIST)
2232     $ARCH_FEATURES
2233     $BUILTIN_LIST
2234     $COMPLEX_FUNCS
2235     $HAVE_LIST_CMDLINE
2236     $HAVE_LIST_PUB
2237     $HEADERS_LIST
2238     $INTRINSICS_LIST
2239     $MATH_FUNCS
2240     $SYSTEM_FEATURES
2241     $SYSTEM_FUNCS
2242     $SYSTEM_LIBRARIES
2243     $THREADS_LIST
2244     $TOOLCHAIN_FEATURES
2245     $TYPES_LIST
2246     makeinfo
2247     makeinfo_html
2248     opencl_d3d11
2249     opencl_drm_arm
2250     opencl_drm_beignet
2251     opencl_dxva2
2252     opencl_vaapi_beignet
2253     opencl_vaapi_intel_media
2254     perl
2255     pod2man
2256     texi2html
2257 "
2258
2259 # options emitted with CONFIG_ prefix but not available on the command line
2260 CONFIG_EXTRA="
2261     aandcttables
2262     ac3dsp
2263     adts_header
2264     audio_frame_queue
2265     audiodsp
2266     blockdsp
2267     bswapdsp
2268     cabac
2269     cbs
2270     cbs_h264
2271     cbs_h265
2272     cbs_mpeg2
2273     cbs_vp9
2274     dirac_parse
2275     dnn
2276     dvprofile
2277     exif
2278     faandct
2279     faanidct
2280     fdctdsp
2281     flacdsp
2282     fmtconvert
2283     frame_thread_encoder
2284     g722dsp
2285     golomb
2286     gplv3
2287     h263dsp
2288     h264chroma
2289     h264dsp
2290     h264parse
2291     h264pred
2292     h264qpel
2293     hevcparse
2294     hpeldsp
2295     huffman
2296     huffyuvdsp
2297     huffyuvencdsp
2298     idctdsp
2299     iirfilter
2300     mdct15
2301     intrax8
2302     iso_media
2303     ividsp
2304     jpegtables
2305     lgplv3
2306     libx262
2307     llauddsp
2308     llviddsp
2309     llvidencdsp
2310     lpc
2311     lzf
2312     me_cmp
2313     mpeg_er
2314     mpegaudio
2315     mpegaudiodsp
2316     mpegaudioheader
2317     mpegvideo
2318     mpegvideoenc
2319     mss34dsp
2320     pixblockdsp
2321     qpeldsp
2322     qsv
2323     qsvdec
2324     qsvenc
2325     qsvvpp
2326     rangecoder
2327     riffdec
2328     riffenc
2329     rtpdec
2330     rtpenc_chain
2331     rv34dsp
2332     sinewin
2333     snappy
2334     srtp
2335     startcode
2336     texturedsp
2337     texturedspenc
2338     tpeldsp
2339     vaapi_1
2340     vaapi_encode
2341     vc1dsp
2342     videodsp
2343     vp3dsp
2344     vp56dsp
2345     vp8dsp
2346     wma_freqs
2347     wmv2dsp
2348 "
2349
2350 CMDLINE_SELECT="
2351     $ARCH_EXT_LIST
2352     $CONFIG_LIST
2353     $HAVE_LIST_CMDLINE
2354     $THREADS_LIST
2355     asm
2356     cross_compile
2357     debug
2358     extra_warnings
2359     logging
2360     lto
2361     optimizations
2362     rpath
2363     stripping
2364 "
2365
2366 PATHS_LIST="
2367     bindir
2368     datadir
2369     docdir
2370     incdir
2371     libdir
2372     mandir
2373     pkgconfigdir
2374     prefix
2375     shlibdir
2376     install_name_dir
2377 "
2378
2379 CMDLINE_SET="
2380     $PATHS_LIST
2381     ar
2382     arch
2383     as
2384     assert_level
2385     build_suffix
2386     cc
2387     objcc
2388     cpu
2389     cross_prefix
2390     custom_allocator
2391     cxx
2392     dep_cc
2393     doxygen
2394     env
2395     extra_version
2396     gas
2397     host_cc
2398     host_cflags
2399     host_extralibs
2400     host_ld
2401     host_ldflags
2402     host_os
2403     ignore_tests
2404     install
2405     ld
2406     ln_s
2407     logfile
2408     malloc_prefix
2409     nm
2410     optflags
2411     nvcc
2412     nvccflags
2413     pkg_config
2414     pkg_config_flags
2415     progs_suffix
2416     random_seed
2417     ranlib
2418     samples
2419     strip
2420     sws_max_filter_size
2421     sysinclude
2422     sysroot
2423     target_exec
2424     target_os
2425     target_path
2426     target_samples
2427     tempprefix
2428     toolchain
2429     valgrind
2430     x86asmexe
2431 "
2432
2433 CMDLINE_APPEND="
2434     extra_cflags
2435     extra_cxxflags
2436     extra_objcflags
2437     host_cppflags
2438 "
2439
2440 # code dependency declarations
2441
2442 # architecture extensions
2443
2444 armv5te_deps="arm"
2445 armv6_deps="arm"
2446 armv6t2_deps="arm"
2447 armv8_deps="aarch64"
2448 neon_deps_any="aarch64 arm"
2449 intrinsics_neon_deps="neon"
2450 vfp_deps_any="aarch64 arm"
2451 vfpv3_deps="vfp"
2452 setend_deps="arm"
2453
2454 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2455
2456 altivec_deps="ppc"
2457 dcbzl_deps="ppc"
2458 ldbrx_deps="ppc"
2459 ppc4xx_deps="ppc"
2460 vsx_deps="altivec"
2461 power8_deps="vsx"
2462
2463 loongson2_deps="mips"
2464 loongson3_deps="mips"
2465 mips32r2_deps="mips"
2466 mips32r5_deps="mips"
2467 mips32r6_deps="mips"
2468 mips64r2_deps="mips"
2469 mips64r6_deps="mips"
2470 mipsfpu_deps="mips"
2471 mipsdsp_deps="mips"
2472 mipsdspr2_deps="mips"
2473 mmi_deps="mips"
2474 msa_deps="mipsfpu"
2475
2476 cpunop_deps="i686"
2477 x86_64_select="i686"
2478 x86_64_suggest="fast_cmov"
2479
2480 amd3dnow_deps="mmx"
2481 amd3dnowext_deps="amd3dnow"
2482 i686_deps="x86"
2483 mmx_deps="x86"
2484 mmxext_deps="mmx"
2485 sse_deps="mmxext"
2486 sse2_deps="sse"
2487 sse3_deps="sse2"
2488 ssse3_deps="sse3"
2489 sse4_deps="ssse3"
2490 sse42_deps="sse4"
2491 aesni_deps="sse42"
2492 avx_deps="sse42"
2493 xop_deps="avx"
2494 fma3_deps="avx"
2495 fma4_deps="avx"
2496 avx2_deps="avx"
2497 avx512_deps="avx2"
2498
2499 mmx_external_deps="x86asm"
2500 mmx_inline_deps="inline_asm x86"
2501 mmx_suggest="mmx_external mmx_inline"
2502
2503 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2504     eval dep=\$${ext}_deps
2505     eval ${ext}_external_deps='"${dep}_external"'
2506     eval ${ext}_inline_deps='"${dep}_inline"'
2507     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2508 done
2509
2510 aligned_stack_if_any="aarch64 ppc x86"
2511 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2512 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2513 fast_unaligned_if_any="aarch64 ppc x86"
2514 simd_align_16_if_any="altivec neon sse"
2515 simd_align_32_if_any="avx"
2516 simd_align_64_if_any="avx512"
2517
2518 # system capabilities
2519 linux_perf_deps="linux_perf_event_h"
2520 symver_if_any="symver_asm_label symver_gnu_asm"
2521 valgrind_backtrace_conflict="optimizations"
2522 valgrind_backtrace_deps="valgrind_valgrind_h"
2523
2524 # threading support
2525 atomics_gcc_if="sync_val_compare_and_swap"
2526 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2527 atomics_win32_if="MemoryBarrier"
2528 atomics_native_if_any="$ATOMICS_LIST"
2529 w32threads_deps="atomics_native"
2530 threads_if_any="$THREADS_LIST"
2531
2532 # subsystems
2533 cbs_h264_select="cbs golomb"
2534 cbs_h265_select="cbs golomb"
2535 cbs_mpeg2_select="cbs"
2536 cbs_vp9_select="cbs"
2537 dct_select="rdft"
2538 dirac_parse_select="golomb"
2539 dnn_suggest="libtensorflow"
2540 error_resilience_select="me_cmp"
2541 faandct_deps="faan"
2542 faandct_select="fdctdsp"
2543 faanidct_deps="faan"
2544 faanidct_select="idctdsp"
2545 h264dsp_select="startcode"
2546 hevcparse_select="golomb"
2547 frame_thread_encoder_deps="encoders threads"
2548 intrax8_select="blockdsp idctdsp"
2549 mdct_select="fft"
2550 mdct15_select="fft"
2551 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2552 mpeg_er_select="error_resilience"
2553 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2554 mpegaudiodsp_select="dct"
2555 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2556 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2557 vc1dsp_select="h264chroma qpeldsp startcode"
2558 rdft_select="fft"
2559
2560 # decoders / encoders
2561 aac_decoder_select="adts_header mdct15 mdct sinewin"
2562 aac_fixed_decoder_select="adts_header mdct sinewin"
2563 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2564 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2565 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2566 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2567 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2568 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2569 adpcm_g722_decoder_select="g722dsp"
2570 adpcm_g722_encoder_select="g722dsp"
2571 aic_decoder_select="golomb idctdsp"
2572 alac_encoder_select="lpc"
2573 als_decoder_select="bswapdsp"
2574 amrnb_decoder_select="lsp"
2575 amrwb_decoder_select="lsp"
2576 amv_decoder_select="sp5x_decoder exif"
2577 amv_encoder_select="jpegtables mpegvideoenc"
2578 ape_decoder_select="bswapdsp llauddsp"
2579 apng_decoder_deps="zlib"
2580 apng_encoder_deps="zlib"
2581 apng_encoder_select="llvidencdsp"
2582 aptx_decoder_select="audio_frame_queue"
2583 aptx_encoder_select="audio_frame_queue"
2584 aptx_hd_decoder_select="audio_frame_queue"
2585 aptx_hd_encoder_select="audio_frame_queue"
2586 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2587 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2588 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2589 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2590 atrac1_decoder_select="mdct sinewin"
2591 atrac3_decoder_select="mdct"
2592 atrac3p_decoder_select="mdct sinewin"
2593 atrac9_decoder_select="mdct"
2594 avrn_decoder_select="exif jpegtables"
2595 bink_decoder_select="blockdsp hpeldsp"
2596 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2597 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2598 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2599 clearvideo_decoder_select="idctdsp"
2600 cllc_decoder_select="bswapdsp"
2601 comfortnoise_encoder_select="lpc"
2602 cook_decoder_select="audiodsp mdct sinewin"
2603 cscd_decoder_select="lzo"
2604 cscd_decoder_suggest="zlib"
2605 dca_decoder_select="mdct"
2606 dds_decoder_select="texturedsp"
2607 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2608 dnxhd_decoder_select="blockdsp idctdsp"
2609 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2610 dolby_e_decoder_select="mdct"
2611 dvvideo_decoder_select="dvprofile idctdsp"
2612 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2613 dxa_decoder_deps="zlib"
2614 dxv_decoder_select="lzf texturedsp"
2615 eac3_decoder_select="ac3_decoder"
2616 eac3_encoder_select="ac3_encoder"
2617 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2618 eatgq_decoder_select="aandcttables"
2619 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2620 exr_decoder_deps="zlib"
2621 ffv1_decoder_select="rangecoder"
2622 ffv1_encoder_select="rangecoder"
2623 ffvhuff_decoder_select="huffyuv_decoder"
2624 ffvhuff_encoder_select="huffyuv_encoder"
2625 fic_decoder_select="golomb"
2626 flac_decoder_select="flacdsp"
2627 flac_encoder_select="bswapdsp flacdsp lpc"
2628 flashsv2_decoder_deps="zlib"
2629 flashsv2_encoder_deps="zlib"
2630 flashsv_decoder_deps="zlib"
2631 flashsv_encoder_deps="zlib"
2632 flv_decoder_select="h263_decoder"
2633 flv_encoder_select="h263_encoder"
2634 fourxm_decoder_select="blockdsp bswapdsp"
2635 fraps_decoder_select="bswapdsp huffman"
2636 g2m_decoder_deps="zlib"
2637 g2m_decoder_select="blockdsp idctdsp jpegtables"
2638 g729_decoder_select="audiodsp"
2639 h261_decoder_select="mpegvideo"
2640 h261_encoder_select="mpegvideoenc"
2641 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2642 h263_encoder_select="h263dsp mpegvideoenc"
2643 h263i_decoder_select="h263_decoder"
2644 h263p_decoder_select="h263_decoder"
2645 h263p_encoder_select="h263_encoder"
2646 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2647 h264_decoder_suggest="error_resilience"
2648 hap_decoder_select="snappy texturedsp"
2649 hap_encoder_deps="libsnappy"
2650 hap_encoder_select="texturedspenc"
2651 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2652 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2653 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2654 iac_decoder_select="imc_decoder"
2655 imc_decoder_select="bswapdsp fft mdct sinewin"
2656 indeo3_decoder_select="hpeldsp"
2657 indeo4_decoder_select="ividsp"
2658 indeo5_decoder_select="ividsp"
2659 interplay_video_decoder_select="hpeldsp"
2660 jpegls_decoder_select="mjpeg_decoder"
2661 jv_decoder_select="blockdsp"
2662 lagarith_decoder_select="llviddsp"
2663 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2664 magicyuv_decoder_select="llviddsp"
2665 magicyuv_encoder_select="llvidencdsp"
2666 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2667 metasound_decoder_select="lsp mdct sinewin"
2668 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2669 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2670 mjpeg_encoder_select="jpegtables mpegvideoenc"
2671 mjpegb_decoder_select="mjpeg_decoder"
2672 mlp_decoder_select="mlp_parser"
2673 mlp_encoder_select="lpc"
2674 motionpixels_decoder_select="bswapdsp"
2675 mp1_decoder_select="mpegaudio"
2676 mp1float_decoder_select="mpegaudio"
2677 mp2_decoder_select="mpegaudio"
2678 mp2float_decoder_select="mpegaudio"
2679 mp3_decoder_select="mpegaudio"
2680 mp3adu_decoder_select="mpegaudio"
2681 mp3adufloat_decoder_select="mpegaudio"
2682 mp3float_decoder_select="mpegaudio"
2683 mp3on4_decoder_select="mpegaudio"
2684 mp3on4float_decoder_select="mpegaudio"
2685 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2686 mpc8_decoder_select="mpegaudiodsp"
2687 mpegvideo_decoder_select="mpegvideo"
2688 mpeg1video_decoder_select="mpegvideo"
2689 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2690 mpeg2video_decoder_select="mpegvideo"
2691 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2692 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2693 mpeg4_encoder_select="h263_encoder"
2694 msa1_decoder_select="mss34dsp"
2695 mscc_decoder_deps="zlib"
2696 msmpeg4v1_decoder_select="h263_decoder"
2697 msmpeg4v2_decoder_select="h263_decoder"
2698 msmpeg4v2_encoder_select="h263_encoder"
2699 msmpeg4v3_decoder_select="h263_decoder"
2700 msmpeg4v3_encoder_select="h263_encoder"
2701 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2702 mts2_decoder_select="mss34dsp"
2703 mwsc_decoder_deps="zlib"
2704 mxpeg_decoder_select="mjpeg_decoder"
2705 nellymoser_decoder_select="mdct sinewin"
2706 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2707 nuv_decoder_select="idctdsp lzo"
2708 on2avc_decoder_select="mdct"
2709 opus_decoder_deps="swresample"
2710 opus_decoder_select="mdct15"
2711 opus_encoder_select="audio_frame_queue mdct15"
2712 png_decoder_deps="zlib"
2713 png_encoder_deps="zlib"
2714 png_encoder_select="llvidencdsp"
2715 prores_decoder_select="blockdsp idctdsp"
2716 prores_encoder_select="fdctdsp"
2717 qcelp_decoder_select="lsp"
2718 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2719 ra_144_decoder_select="audiodsp"
2720 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2721 ralf_decoder_select="golomb"
2722 rawvideo_decoder_select="bswapdsp"
2723 rscc_decoder_deps="zlib"
2724 rtjpeg_decoder_select="me_cmp"
2725 rv10_decoder_select="h263_decoder"
2726 rv10_encoder_select="h263_encoder"
2727 rv20_decoder_select="h263_decoder"
2728 rv20_encoder_select="h263_encoder"
2729 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2730 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2731 screenpresso_decoder_deps="zlib"
2732 shorten_decoder_select="bswapdsp"
2733 sipr_decoder_select="lsp"
2734 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2735 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2736 sonic_decoder_select="golomb rangecoder"
2737 sonic_encoder_select="golomb rangecoder"
2738 sonic_ls_encoder_select="golomb rangecoder"
2739 sp5x_decoder_select="mjpeg_decoder"
2740 srgc_decoder_deps="zlib"
2741 svq1_decoder_select="hpeldsp"
2742 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2743 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2744 svq3_decoder_suggest="zlib"
2745 tak_decoder_select="audiodsp"
2746 tdsc_decoder_deps="zlib"
2747 tdsc_decoder_select="mjpeg_decoder"
2748 theora_decoder_select="vp3_decoder"
2749 thp_decoder_select="mjpeg_decoder"
2750 tiff_decoder_suggest="zlib lzma"
2751 tiff_encoder_suggest="zlib"
2752 truehd_decoder_select="mlp_parser"
2753 truehd_encoder_select="lpc"
2754 truemotion2_decoder_select="bswapdsp"
2755 truespeech_decoder_select="bswapdsp"
2756 tscc_decoder_deps="zlib"
2757 twinvq_decoder_select="mdct lsp sinewin"
2758 txd_decoder_select="texturedsp"
2759 utvideo_decoder_select="bswapdsp llviddsp"
2760 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2761 vble_decoder_select="llviddsp"
2762 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2763 vc1image_decoder_select="vc1_decoder"
2764 vorbis_decoder_select="mdct"
2765 vorbis_encoder_select="audio_frame_queue mdct"
2766 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2767 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2768 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2769 vp6a_decoder_select="vp6_decoder"
2770 vp6f_decoder_select="vp6_decoder"
2771 vp7_decoder_select="h264pred videodsp vp8dsp"
2772 vp8_decoder_select="h264pred videodsp vp8dsp"
2773 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2774 wcmv_decoder_deps="zlib"
2775 webp_decoder_select="vp8_decoder exif"
2776 wmalossless_decoder_select="llauddsp"
2777 wmapro_decoder_select="mdct sinewin wma_freqs"
2778 wmav1_decoder_select="mdct sinewin wma_freqs"
2779 wmav1_encoder_select="mdct sinewin wma_freqs"
2780 wmav2_decoder_select="mdct sinewin wma_freqs"
2781 wmav2_encoder_select="mdct sinewin wma_freqs"
2782 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2783 wmv1_decoder_select="h263_decoder"
2784 wmv1_encoder_select="h263_encoder"
2785 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2786 wmv2_encoder_select="h263_encoder wmv2dsp"
2787 wmv3_decoder_select="vc1_decoder"
2788 wmv3image_decoder_select="wmv3_decoder"
2789 xma1_decoder_select="wmapro_decoder"
2790 xma2_decoder_select="wmapro_decoder"
2791 zerocodec_decoder_deps="zlib"
2792 zlib_decoder_deps="zlib"
2793 zlib_encoder_deps="zlib"
2794 zmbv_decoder_deps="zlib"
2795 zmbv_encoder_deps="zlib"
2796
2797 # hardware accelerators
2798 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2799 cuda_deps="ffnvcodec"
2800 cuvid_deps="ffnvcodec"
2801 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2802 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2803 ffnvcodec_deps_any="libdl LoadLibrary"
2804 nvdec_deps="ffnvcodec"
2805 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2806 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2807 xvmc_deps="X11_extensions_XvMClib_h"
2808
2809 h263_vaapi_hwaccel_deps="vaapi"
2810 h263_vaapi_hwaccel_select="h263_decoder"
2811 h263_videotoolbox_hwaccel_deps="videotoolbox"
2812 h263_videotoolbox_hwaccel_select="h263_decoder"
2813 h264_d3d11va_hwaccel_deps="d3d11va"
2814 h264_d3d11va_hwaccel_select="h264_decoder"
2815 h264_d3d11va2_hwaccel_deps="d3d11va"
2816 h264_d3d11va2_hwaccel_select="h264_decoder"
2817 h264_dxva2_hwaccel_deps="dxva2"
2818 h264_dxva2_hwaccel_select="h264_decoder"
2819 h264_nvdec_hwaccel_deps="nvdec"
2820 h264_nvdec_hwaccel_select="h264_decoder"
2821 h264_vaapi_hwaccel_deps="vaapi"
2822 h264_vaapi_hwaccel_select="h264_decoder"
2823 h264_vdpau_hwaccel_deps="vdpau"
2824 h264_vdpau_hwaccel_select="h264_decoder"
2825 h264_videotoolbox_hwaccel_deps="videotoolbox"
2826 h264_videotoolbox_hwaccel_select="h264_decoder"
2827 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2828 hevc_d3d11va_hwaccel_select="hevc_decoder"
2829 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2830 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2831 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2832 hevc_dxva2_hwaccel_select="hevc_decoder"
2833 hevc_nvdec_hwaccel_deps="nvdec"
2834 hevc_nvdec_hwaccel_select="hevc_decoder"
2835 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2836 hevc_vaapi_hwaccel_select="hevc_decoder"
2837 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2838 hevc_vdpau_hwaccel_select="hevc_decoder"
2839 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2840 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2841 mjpeg_nvdec_hwaccel_deps="nvdec"
2842 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2843 mjpeg_vaapi_hwaccel_deps="vaapi"
2844 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2845 mpeg_xvmc_hwaccel_deps="xvmc"
2846 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2847 mpeg1_nvdec_hwaccel_deps="nvdec"
2848 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2849 mpeg1_vdpau_hwaccel_deps="vdpau"
2850 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2851 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2852 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2853 mpeg1_xvmc_hwaccel_deps="xvmc"
2854 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2855 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2856 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2857 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2858 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2859 mpeg2_dxva2_hwaccel_deps="dxva2"
2860 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2861 mpeg2_nvdec_hwaccel_deps="nvdec"
2862 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2863 mpeg2_vaapi_hwaccel_deps="vaapi"
2864 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2865 mpeg2_vdpau_hwaccel_deps="vdpau"
2866 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2867 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2868 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2869 mpeg2_xvmc_hwaccel_deps="xvmc"
2870 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2871 mpeg4_nvdec_hwaccel_deps="nvdec"
2872 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2873 mpeg4_vaapi_hwaccel_deps="vaapi"
2874 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2875 mpeg4_vdpau_hwaccel_deps="vdpau"
2876 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2877 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2878 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2879 vc1_d3d11va_hwaccel_deps="d3d11va"
2880 vc1_d3d11va_hwaccel_select="vc1_decoder"
2881 vc1_d3d11va2_hwaccel_deps="d3d11va"
2882 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2883 vc1_dxva2_hwaccel_deps="dxva2"
2884 vc1_dxva2_hwaccel_select="vc1_decoder"
2885 vc1_nvdec_hwaccel_deps="nvdec"
2886 vc1_nvdec_hwaccel_select="vc1_decoder"
2887 vc1_vaapi_hwaccel_deps="vaapi"
2888 vc1_vaapi_hwaccel_select="vc1_decoder"
2889 vc1_vdpau_hwaccel_deps="vdpau"
2890 vc1_vdpau_hwaccel_select="vc1_decoder"
2891 vp8_nvdec_hwaccel_deps="nvdec"
2892 vp8_nvdec_hwaccel_select="vp8_decoder"
2893 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2894 vp8_vaapi_hwaccel_select="vp8_decoder"
2895 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2896 vp9_d3d11va_hwaccel_select="vp9_decoder"
2897 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2898 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2899 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2900 vp9_dxva2_hwaccel_select="vp9_decoder"
2901 vp9_nvdec_hwaccel_deps="nvdec"
2902 vp9_nvdec_hwaccel_select="vp9_decoder"
2903 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2904 vp9_vaapi_hwaccel_select="vp9_decoder"
2905 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2906 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2907 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2908 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2909 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2910 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2911
2912 # hardware-accelerated codecs
2913 omx_deps="libdl pthreads"
2914 omx_rpi_select="omx"
2915 qsv_deps="libmfx"
2916 qsvdec_select="qsv"
2917 qsvenc_select="qsv"
2918 qsvvpp_select="qsv"
2919 vaapi_encode_deps="vaapi"
2920 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2921
2922 hwupload_cuda_filter_deps="ffnvcodec"
2923 scale_npp_filter_deps="ffnvcodec libnpp"
2924 scale_cuda_filter_deps="cuda_sdk"
2925 thumbnail_cuda_filter_deps="cuda_sdk"
2926
2927 amf_deps_any="libdl LoadLibrary"
2928 nvenc_deps="ffnvcodec"
2929 nvenc_deps_any="libdl LoadLibrary"
2930 nvenc_encoder_deps="nvenc"
2931
2932 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2933 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2934 h264_amf_encoder_deps="amf"
2935 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2936 h264_cuvid_decoder_deps="cuvid"
2937 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2938 h264_mediacodec_decoder_deps="mediacodec"
2939 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2940 h264_mmal_decoder_deps="mmal"
2941 h264_nvenc_encoder_deps="nvenc"
2942 h264_omx_encoder_deps="omx"
2943 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2944 h264_qsv_encoder_select="qsvenc"
2945 h264_rkmpp_decoder_deps="rkmpp"
2946 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2947 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2948 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2949 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2950 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2951 hevc_amf_encoder_deps="amf"
2952 hevc_cuvid_decoder_deps="cuvid"
2953 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2954 hevc_mediacodec_decoder_deps="mediacodec"
2955 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2956 hevc_nvenc_encoder_deps="nvenc"
2957 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2958 hevc_qsv_encoder_select="hevcparse qsvenc"
2959 hevc_rkmpp_decoder_deps="rkmpp"
2960 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2961 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2962 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2963 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2964 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2965 mjpeg_cuvid_decoder_deps="cuvid"
2966 mjpeg_qsv_encoder_deps="libmfx"
2967 mjpeg_qsv_encoder_select="qsvenc"
2968 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2969 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2970 mpeg1_cuvid_decoder_deps="cuvid"
2971 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2972 mpeg2_crystalhd_decoder_select="crystalhd"
2973 mpeg2_cuvid_decoder_deps="cuvid"
2974 mpeg2_mmal_decoder_deps="mmal"
2975 mpeg2_mediacodec_decoder_deps="mediacodec"
2976 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2977 mpeg2_qsv_encoder_select="qsvenc"
2978 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2979 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2980 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2981 mpeg4_crystalhd_decoder_select="crystalhd"
2982 mpeg4_cuvid_decoder_deps="cuvid"
2983 mpeg4_mediacodec_decoder_deps="mediacodec"
2984 mpeg4_mmal_decoder_deps="mmal"
2985 mpeg4_omx_encoder_deps="omx"
2986 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2987 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2988 msmpeg4_crystalhd_decoder_select="crystalhd"
2989 nvenc_h264_encoder_select="h264_nvenc_encoder"
2990 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2991 vc1_crystalhd_decoder_select="crystalhd"
2992 vc1_cuvid_decoder_deps="cuvid"
2993 vc1_mmal_decoder_deps="mmal"
2994 vc1_qsv_decoder_select="qsvdec vc1_parser"
2995 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2996 vp8_cuvid_decoder_deps="cuvid"
2997 vp8_mediacodec_decoder_deps="mediacodec"
2998 vp8_qsv_decoder_select="qsvdec vp8_parser"
2999 vp8_rkmpp_decoder_deps="rkmpp"
3000 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3001 vp8_vaapi_encoder_select="vaapi_encode"
3002 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3003 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3004 vp9_cuvid_decoder_deps="cuvid"
3005 vp9_mediacodec_decoder_deps="mediacodec"
3006 vp9_rkmpp_decoder_deps="rkmpp"
3007 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3008 vp9_vaapi_encoder_select="vaapi_encode"
3009 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3010 wmv3_crystalhd_decoder_select="crystalhd"
3011
3012 # parsers
3013 aac_parser_select="adts_header"
3014 h264_parser_select="golomb h264dsp h264parse"
3015 hevc_parser_select="hevcparse"
3016 mpegaudio_parser_select="mpegaudioheader"
3017 mpegvideo_parser_select="mpegvideo"
3018 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3019 vc1_parser_select="vc1dsp"
3020
3021 # bitstream_filters
3022 aac_adtstoasc_bsf_select="adts_header"
3023 eac3_core_bsf_select="ac3_parser"
3024 filter_units_bsf_select="cbs"
3025 h264_metadata_bsf_deps="const_nan"
3026 h264_metadata_bsf_select="cbs_h264"
3027 h264_redundant_pps_bsf_select="cbs_h264"
3028 hevc_metadata_bsf_select="cbs_h265"
3029 mjpeg2jpeg_bsf_select="jpegtables"
3030 mpeg2_metadata_bsf_select="cbs_mpeg2"
3031 trace_headers_bsf_select="cbs"
3032 vp9_metadata_bsf_select="cbs_vp9"
3033
3034 # external libraries
3035 aac_at_decoder_deps="audiotoolbox"
3036 aac_at_decoder_select="aac_adtstoasc_bsf"
3037 ac3_at_decoder_deps="audiotoolbox"
3038 ac3_at_decoder_select="ac3_parser"
3039 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3040 alac_at_decoder_deps="audiotoolbox"
3041 amr_nb_at_decoder_deps="audiotoolbox"
3042 avisynth_deps_any="libdl LoadLibrary"
3043 avisynth_demuxer_deps="avisynth"
3044 avisynth_demuxer_select="riffdec"
3045 eac3_at_decoder_deps="audiotoolbox"
3046 eac3_at_decoder_select="ac3_parser"
3047 gsm_ms_at_decoder_deps="audiotoolbox"
3048 ilbc_at_decoder_deps="audiotoolbox"
3049 mp1_at_decoder_deps="audiotoolbox"
3050 mp2_at_decoder_deps="audiotoolbox"
3051 mp3_at_decoder_deps="audiotoolbox"
3052 mp1_at_decoder_select="mpegaudioheader"
3053 mp2_at_decoder_select="mpegaudioheader"
3054 mp3_at_decoder_select="mpegaudioheader"
3055 pcm_alaw_at_decoder_deps="audiotoolbox"
3056 pcm_mulaw_at_decoder_deps="audiotoolbox"
3057 qdmc_at_decoder_deps="audiotoolbox"
3058 qdm2_at_decoder_deps="audiotoolbox"
3059 aac_at_encoder_deps="audiotoolbox"
3060 aac_at_encoder_select="audio_frame_queue"
3061 alac_at_encoder_deps="audiotoolbox"
3062 alac_at_encoder_select="audio_frame_queue"
3063 ilbc_at_encoder_deps="audiotoolbox"
3064 ilbc_at_encoder_select="audio_frame_queue"
3065 pcm_alaw_at_encoder_deps="audiotoolbox"
3066 pcm_alaw_at_encoder_select="audio_frame_queue"
3067 pcm_mulaw_at_encoder_deps="audiotoolbox"
3068 pcm_mulaw_at_encoder_select="audio_frame_queue"
3069 chromaprint_muxer_deps="chromaprint"
3070 h264_videotoolbox_encoder_deps="pthreads"
3071 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3072 hevc_videotoolbox_encoder_deps="pthreads"
3073 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3074 libaom_av1_decoder_deps="libaom"
3075 libaom_av1_encoder_deps="libaom"
3076 libaom_av1_encoder_select="extract_extradata_bsf"
3077 libcelt_decoder_deps="libcelt"
3078 libcodec2_decoder_deps="libcodec2"
3079 libcodec2_encoder_deps="libcodec2"
3080 libdavs2_decoder_deps="libdavs2"
3081 libfdk_aac_decoder_deps="libfdk_aac"
3082 libfdk_aac_encoder_deps="libfdk_aac"
3083 libfdk_aac_encoder_select="audio_frame_queue"
3084 libgme_demuxer_deps="libgme"
3085 libgsm_decoder_deps="libgsm"
3086 libgsm_encoder_deps="libgsm"
3087 libgsm_ms_decoder_deps="libgsm"
3088 libgsm_ms_encoder_deps="libgsm"
3089 libilbc_decoder_deps="libilbc"
3090 libilbc_encoder_deps="libilbc"
3091 libkvazaar_encoder_deps="libkvazaar"
3092 libmodplug_demuxer_deps="libmodplug"
3093 libmp3lame_encoder_deps="libmp3lame"
3094 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3095 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3096 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3097 libopencore_amrnb_encoder_select="audio_frame_queue"
3098 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3099 libopenh264_decoder_deps="libopenh264"
3100 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3101 libopenh264_encoder_deps="libopenh264"
3102 libopenjpeg_decoder_deps="libopenjpeg"
3103 libopenjpeg_encoder_deps="libopenjpeg"
3104 libopenmpt_demuxer_deps="libopenmpt"
3105 libopus_decoder_deps="libopus"
3106 libopus_encoder_deps="libopus"
3107 libopus_encoder_select="audio_frame_queue"
3108 librsvg_decoder_deps="librsvg"
3109 libshine_encoder_deps="libshine"
3110 libshine_encoder_select="audio_frame_queue"
3111 libspeex_decoder_deps="libspeex"
3112 libspeex_encoder_deps="libspeex"
3113 libspeex_encoder_select="audio_frame_queue"
3114 libtheora_encoder_deps="libtheora"
3115 libtwolame_encoder_deps="libtwolame"
3116 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3117 libvorbis_decoder_deps="libvorbis"
3118 libvorbis_encoder_deps="libvorbis libvorbisenc"
3119 libvorbis_encoder_select="audio_frame_queue"
3120 libvpx_vp8_decoder_deps="libvpx"
3121 libvpx_vp8_encoder_deps="libvpx"
3122 libvpx_vp9_decoder_deps="libvpx"
3123 libvpx_vp9_encoder_deps="libvpx"
3124 libwavpack_encoder_deps="libwavpack"
3125 libwavpack_encoder_select="audio_frame_queue"
3126 libwebp_encoder_deps="libwebp"
3127 libwebp_anim_encoder_deps="libwebp"
3128 libx262_encoder_deps="libx262"
3129 libx264_encoder_deps="libx264"
3130 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3131 libx264rgb_encoder_select="libx264_encoder"
3132 libx265_encoder_deps="libx265"
3133 libxavs_encoder_deps="libxavs"
3134 libxvid_encoder_deps="libxvid"
3135 libzvbi_teletext_decoder_deps="libzvbi"
3136 vapoursynth_demuxer_deps="vapoursynth"
3137 videotoolbox_suggest="coreservices"
3138 videotoolbox_deps="corefoundation coremedia corevideo"
3139 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3140
3141 # demuxers / muxers
3142 ac3_demuxer_select="ac3_parser"
3143 aiff_muxer_select="iso_media"
3144 asf_demuxer_select="riffdec"
3145 asf_o_demuxer_select="riffdec"
3146 asf_muxer_select="riffenc"
3147 asf_stream_muxer_select="asf_muxer"
3148 avi_demuxer_select="iso_media riffdec exif"
3149 avi_muxer_select="riffenc"
3150 caf_demuxer_select="iso_media riffdec"
3151 caf_muxer_select="iso_media"
3152 dash_muxer_select="mp4_muxer"
3153 dash_demuxer_deps="libxml2"
3154 dirac_demuxer_select="dirac_parser"
3155 dts_demuxer_select="dca_parser"
3156 dtshd_demuxer_select="dca_parser"
3157 dv_demuxer_select="dvprofile"
3158 dv_muxer_select="dvprofile"
3159 dxa_demuxer_select="riffdec"
3160 eac3_demuxer_select="ac3_parser"
3161 f4v_muxer_select="mov_muxer"
3162 fifo_muxer_deps="threads"
3163 flac_demuxer_select="flac_parser"
3164 hds_muxer_select="flv_muxer"
3165 hls_muxer_select="mpegts_muxer"
3166 hls_muxer_suggest="gcrypt openssl"
3167 image2_alias_pix_demuxer_select="image2_demuxer"
3168 image2_brender_pix_demuxer_select="image2_demuxer"
3169 ipod_muxer_select="mov_muxer"
3170 ismv_muxer_select="mov_muxer"
3171 matroska_audio_muxer_select="matroska_muxer"
3172 matroska_demuxer_select="iso_media riffdec"
3173 matroska_demuxer_suggest="bzlib lzo zlib"
3174 matroska_muxer_select="iso_media riffenc"
3175 mmf_muxer_select="riffenc"
3176 mov_demuxer_select="iso_media riffdec"
3177 mov_demuxer_suggest="zlib"
3178 mov_muxer_select="iso_media riffenc rtpenc_chain"
3179 mp3_demuxer_select="mpegaudio_parser"
3180 mp3_muxer_select="mpegaudioheader"
3181 mp4_muxer_select="mov_muxer"
3182 mpegts_demuxer_select="iso_media"
3183 mpegts_muxer_select="adts_muxer latm_muxer"
3184 mpegtsraw_demuxer_select="mpegts_demuxer"
3185 mxf_d10_muxer_select="mxf_muxer"
3186 mxf_opatom_muxer_select="mxf_muxer"
3187 nut_muxer_select="riffenc"
3188 nuv_demuxer_select="riffdec"
3189 oga_muxer_select="ogg_muxer"
3190 ogg_demuxer_select="dirac_parse"
3191 ogv_muxer_select="ogg_muxer"
3192 opus_muxer_select="ogg_muxer"
3193 psp_muxer_select="mov_muxer"
3194 rtp_demuxer_select="sdp_demuxer"
3195 rtp_muxer_select="golomb"
3196 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3197 rtsp_demuxer_select="http_protocol rtpdec"
3198 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3199 sap_demuxer_select="sdp_demuxer"
3200 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3201 sdp_demuxer_select="rtpdec"
3202 smoothstreaming_muxer_select="ismv_muxer"
3203 spdif_demuxer_select="adts_header"
3204 spdif_muxer_select="adts_header"
3205 spx_muxer_select="ogg_muxer"
3206 swf_demuxer_suggest="zlib"
3207 tak_demuxer_select="tak_parser"
3208 tg2_muxer_select="mov_muxer"
3209 tgp_muxer_select="mov_muxer"
3210 vobsub_demuxer_select="mpegps_demuxer"
3211 w64_demuxer_select="wav_demuxer"
3212 w64_muxer_select="wav_muxer"
3213 wav_demuxer_select="riffdec"
3214 wav_muxer_select="riffenc"
3215 webm_muxer_select="iso_media riffenc"
3216 webm_dash_manifest_demuxer_select="matroska_demuxer"
3217 wtv_demuxer_select="mpegts_demuxer riffdec"
3218 wtv_muxer_select="mpegts_muxer riffenc"
3219 xmv_demuxer_select="riffdec"
3220 xwma_demuxer_select="riffdec"
3221
3222 # indevs / outdevs
3223 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3224 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3225 alsa_indev_deps="alsa"
3226 alsa_outdev_deps="alsa"
3227 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3228 avfoundation_indev_suggest="coregraphics applicationservices"
3229 avfoundation_indev_extralibs="-framework Foundation"
3230 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3231 caca_outdev_deps="libcaca"
3232 decklink_deps_any="libdl LoadLibrary"
3233 decklink_indev_deps="decklink threads"
3234 decklink_indev_extralibs="-lstdc++"
3235 decklink_outdev_deps="decklink threads"
3236 decklink_outdev_extralibs="-lstdc++"
3237 libndi_newtek_indev_deps="libndi_newtek"
3238 libndi_newtek_indev_extralibs="-lndi"
3239 libndi_newtek_outdev_deps="libndi_newtek"
3240 libndi_newtek_outdev_extralibs="-lndi"
3241 dshow_indev_deps="IBaseFilter"
3242 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3243 fbdev_indev_deps="linux_fb_h"
3244 fbdev_outdev_deps="linux_fb_h"
3245 gdigrab_indev_deps="CreateDIBSection"
3246 gdigrab_indev_extralibs="-lgdi32"
3247 gdigrab_indev_select="bmp_decoder"
3248 iec61883_indev_deps="libiec61883"
3249 jack_indev_deps="libjack"
3250 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3251 kmsgrab_indev_deps="libdrm"
3252 lavfi_indev_deps="avfilter"
3253 libcdio_indev_deps="libcdio"
3254 libdc1394_indev_deps="libdc1394"
3255 openal_indev_deps="openal"
3256 opengl_outdev_deps="opengl"
3257 oss_indev_deps_any="sys_soundcard_h"
3258 oss_outdev_deps_any="sys_soundcard_h"
3259 pulse_indev_deps="libpulse"
3260 pulse_outdev_deps="libpulse"
3261 sdl2_outdev_deps="sdl2"
3262 sndio_indev_deps="sndio"
3263 sndio_outdev_deps="sndio"
3264 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3265 v4l2_indev_suggest="libv4l2"
3266 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3267 v4l2_outdev_suggest="libv4l2"
3268 vfwcap_indev_deps="vfw32 vfwcap_defines"
3269 xcbgrab_indev_deps="libxcb"
3270 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3271 xv_outdev_deps="xlib"
3272
3273 # protocols
3274 async_protocol_deps="threads"
3275 bluray_protocol_deps="libbluray"
3276 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3277 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3278 ffrtmpcrypt_protocol_select="tcp_protocol"
3279 ffrtmphttp_protocol_conflict="librtmp_protocol"
3280 ffrtmphttp_protocol_select="http_protocol"
3281 ftp_protocol_select="tcp_protocol"
3282 gopher_protocol_select="network"
3283 http_protocol_select="tcp_protocol"
3284 http_protocol_suggest="zlib"
3285 httpproxy_protocol_select="tcp_protocol"
3286 httpproxy_protocol_suggest="zlib"
3287 https_protocol_select="tls_protocol"
3288 https_protocol_suggest="zlib"
3289 icecast_protocol_select="http_protocol"
3290 librtmp_protocol_deps="librtmp"
3291 librtmpe_protocol_deps="librtmp"
3292 librtmps_protocol_deps="librtmp"
3293 librtmpt_protocol_deps="librtmp"
3294 librtmpte_protocol_deps="librtmp"
3295 libsmbclient_protocol_deps="libsmbclient gplv3"
3296 libssh_protocol_deps="libssh"
3297 libtls_conflict="openssl gnutls mbedtls"
3298 mmsh_protocol_select="http_protocol"
3299 mmst_protocol_select="network"
3300 libsrt_protocol_deps="libsrt"
3301 libsrt_protocol_select="network"
3302 rtmp_protocol_conflict="librtmp_protocol"
3303 rtmp_protocol_select="tcp_protocol"
3304 rtmp_protocol_suggest="zlib"
3305 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3306 rtmpe_protocol_suggest="zlib"
3307 rtmps_protocol_conflict="librtmp_protocol"
3308 rtmps_protocol_select="tls_protocol"
3309 rtmps_protocol_suggest="zlib"
3310 rtmpt_protocol_select="ffrtmphttp_protocol"
3311 rtmpt_protocol_suggest="zlib"
3312 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3313 rtmpte_protocol_suggest="zlib"
3314 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3315 rtmpts_protocol_suggest="zlib"
3316 rtp_protocol_select="udp_protocol"
3317 schannel_conflict="openssl gnutls libtls mbedtls"
3318 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3319 sctp_protocol_select="network"
3320 securetransport_conflict="openssl gnutls libtls mbedtls"
3321 srtp_protocol_select="rtp_protocol srtp"
3322 tcp_protocol_select="network"
3323 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3324 tls_protocol_select="tcp_protocol"
3325 udp_protocol_select="network"
3326 udplite_protocol_select="network"
3327 unix_protocol_deps="sys_un_h"
3328 unix_protocol_select="network"
3329
3330 # filters
3331 afftfilt_filter_deps="avcodec"
3332 afftfilt_filter_select="fft"
3333 afir_filter_deps="avcodec"
3334 afir_filter_select="fft"
3335 amovie_filter_deps="avcodec avformat"
3336 aresample_filter_deps="swresample"
3337 ass_filter_deps="libass"
3338 atempo_filter_deps="avcodec"
3339 atempo_filter_select="rdft"
3340 avgblur_opencl_filter_deps="opencl"
3341 azmq_filter_deps="libzmq"
3342 blackframe_filter_deps="gpl"
3343 boxblur_filter_deps="gpl"
3344 boxblur_opencl_filter_deps="opencl gpl"
3345 bs2b_filter_deps="libbs2b"
3346 colormatrix_filter_deps="gpl"
3347 convolution_opencl_filter_deps="opencl"
3348 convolve_filter_deps="avcodec"
3349 convolve_filter_select="fft"
3350 coreimage_filter_deps="coreimage appkit"
3351 coreimage_filter_extralibs="-framework OpenGL"
3352 coreimagesrc_filter_deps="coreimage appkit"
3353 coreimagesrc_filter_extralibs="-framework OpenGL"
3354 cover_rect_filter_deps="avcodec avformat gpl"
3355 cropdetect_filter_deps="gpl"
3356 deconvolve_filter_deps="avcodec"
3357 deconvolve_filter_select="fft"
3358 deinterlace_qsv_filter_deps="libmfx"
3359 deinterlace_vaapi_filter_deps="vaapi"
3360 delogo_filter_deps="gpl"
3361 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3362 deshake_filter_select="pixelutils"
3363 dilation_opencl_filter_deps="opencl"
3364 drawtext_filter_deps="libfreetype"
3365 drawtext_filter_suggest="libfontconfig libfribidi"
3366 elbg_filter_deps="avcodec"
3367 eq_filter_deps="gpl"
3368 erosion_opencl_filter_deps="opencl"
3369 fftfilt_filter_deps="avcodec"
3370 fftfilt_filter_select="rdft"
3371 fftdnoiz_filter_deps="avcodec"
3372 fftdnoiz_filter_select="fft"
3373 find_rect_filter_deps="avcodec avformat gpl"
3374 firequalizer_filter_deps="avcodec"
3375 firequalizer_filter_select="rdft"
3376 flite_filter_deps="libflite"
3377 framerate_filter_select="pixelutils"
3378 frei0r_filter_deps="frei0r libdl"
3379 frei0r_src_filter_deps="frei0r libdl"
3380 fspp_filter_deps="gpl"
3381 geq_filter_deps="gpl"
3382 histeq_filter_deps="gpl"
3383 hqdn3d_filter_deps="gpl"
3384 interlace_filter_deps="gpl"
3385 kerndeint_filter_deps="gpl"
3386 ladspa_filter_deps="ladspa libdl"
3387 lensfun_filter_deps="liblensfun version3"
3388 lv2_filter_deps="lv2"
3389 mcdeint_filter_deps="avcodec gpl"
3390 movie_filter_deps="avcodec avformat"
3391 mpdecimate_filter_deps="gpl"
3392 mpdecimate_filter_select="pixelutils"
3393 mptestsrc_filter_deps="gpl"
3394 negate_filter_deps="lut_filter"
3395 nnedi_filter_deps="gpl"
3396 ocr_filter_deps="libtesseract"
3397 ocv_filter_deps="libopencv"
3398 openclsrc_filter_deps="opencl"
3399 overlay_opencl_filter_deps="opencl"
3400 overlay_qsv_filter_deps="libmfx"
3401 overlay_qsv_filter_select="qsvvpp"
3402 owdenoise_filter_deps="gpl"
3403 pan_filter_deps="swresample"
3404 perspective_filter_deps="gpl"
3405 phase_filter_deps="gpl"
3406 pp7_filter_deps="gpl"
3407 pp_filter_deps="gpl postproc"
3408 prewitt_opencl_filter_deps="opencl"
3409 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3410 program_opencl_filter_deps="opencl"
3411 pullup_filter_deps="gpl"
3412 removelogo_filter_deps="avcodec avformat swscale"
3413 repeatfields_filter_deps="gpl"
3414 resample_filter_deps="avresample"
3415 roberts_opencl_filter_deps="opencl"
3416 rubberband_filter_deps="librubberband"
3417 sab_filter_deps="gpl swscale"
3418 scale2ref_filter_deps="swscale"
3419 scale_filter_deps="swscale"
3420 scale_qsv_filter_deps="libmfx"
3421 select_filter_select="pixelutils"
3422 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3423 showcqt_filter_deps="avcodec avformat swscale"
3424 showcqt_filter_suggest="libfontconfig libfreetype"
3425 showcqt_filter_select="fft"
3426 showfreqs_filter_deps="avcodec"
3427 showfreqs_filter_select="fft"
3428 showspectrum_filter_deps="avcodec"
3429 showspectrum_filter_select="fft"
3430 showspectrumpic_filter_deps="avcodec"
3431 showspectrumpic_filter_select="fft"
3432 signature_filter_deps="gpl avcodec avformat"
3433 smartblur_filter_deps="gpl swscale"
3434 sobel_opencl_filter_deps="opencl"
3435 sofalizer_filter_deps="libmysofa avcodec"
3436 sofalizer_filter_select="fft"
3437 spectrumsynth_filter_deps="avcodec"
3438 spectrumsynth_filter_select="fft"
3439 spp_filter_deps="gpl avcodec"
3440 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3441 sr_filter_deps="avformat swscale"
3442 sr_filter_select="dnn"
3443 stereo3d_filter_deps="gpl"
3444 subtitles_filter_deps="avformat avcodec libass"
3445 super2xsai_filter_deps="gpl"
3446 pixfmts_super2xsai_test_deps="super2xsai_filter"
3447 tinterlace_filter_deps="gpl"
3448 tinterlace_merge_test_deps="tinterlace_filter"
3449 tinterlace_pad_test_deps="tinterlace_filter"
3450 tonemap_filter_deps="const_nan"
3451 tonemap_opencl_filter_deps="opencl const_nan"
3452 unsharp_opencl_filter_deps="opencl"
3453 uspp_filter_deps="gpl avcodec"
3454 vaguedenoiser_filter_deps="gpl"
3455 vidstabdetect_filter_deps="libvidstab"
3456 vidstabtransform_filter_deps="libvidstab"
3457 libvmaf_filter_deps="libvmaf pthreads"
3458 zmq_filter_deps="libzmq"
3459 zoompan_filter_deps="swscale"
3460 zscale_filter_deps="libzimg const_nan"
3461 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3462 vpp_qsv_filter_deps="libmfx"
3463 vpp_qsv_filter_select="qsvvpp"
3464
3465 # examples
3466 avio_dir_cmd_deps="avformat avutil"
3467 avio_reading_deps="avformat avcodec avutil"
3468 decode_audio_example_deps="avcodec avutil"
3469 decode_video_example_deps="avcodec avutil"
3470 demuxing_decoding_example_deps="avcodec avformat avutil"
3471 encode_audio_example_deps="avcodec avutil"
3472 encode_video_example_deps="avcodec avutil"
3473 extract_mvs_example_deps="avcodec avformat avutil"
3474 filter_audio_example_deps="avfilter avutil"
3475 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3476 filtering_video_example_deps="avfilter avcodec avformat avutil"
3477 http_multiclient_example_deps="avformat avutil fork"
3478 hw_decode_example_deps="avcodec avformat avutil"
3479 metadata_example_deps="avformat avutil"
3480 muxing_example_deps="avcodec avformat avutil swscale"
3481 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3482 remuxing_example_deps="avcodec avformat avutil"
3483 resampling_audio_example_deps="avutil swresample"
3484 scaling_video_example_deps="avutil swscale"
3485 transcode_aac_example_deps="avcodec avformat swresample"
3486 transcoding_example_deps="avfilter avcodec avformat avutil"
3487 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3488 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3489
3490 # EXTRALIBS_LIST
3491 cpu_init_extralibs="pthreads_extralibs"
3492 cws2fws_extralibs="zlib_extralibs"
3493
3494 # libraries, in linking order
3495 avcodec_deps="avutil"
3496 avcodec_suggest="libm"
3497 avcodec_select="null_bsf"
3498 avdevice_deps="avformat avcodec avutil"
3499 avdevice_suggest="libm"
3500 avfilter_deps="avutil"
3501 avfilter_suggest="libm"
3502 avformat_deps="avcodec avutil"
3503 avformat_suggest="libm network zlib"
3504 avresample_deps="avutil"
3505 avresample_suggest="libm"
3506 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3507 postproc_deps="avutil gpl"
3508 postproc_suggest="libm"
3509 swresample_deps="avutil"
3510 swresample_suggest="libm libsoxr"
3511 swscale_deps="avutil"
3512 swscale_suggest="libm"
3513
3514 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3515 avfilter_extralibs="pthreads_extralibs"
3516 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3517
3518 # programs
3519 ffmpeg_deps="avcodec avfilter avformat"
3520 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3521                null_filter
3522                trim_filter"
3523 ffmpeg_suggest="ole32 psapi shell32"
3524 ffplay_deps="avcodec avformat swscale swresample sdl2"
3525 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3526 ffplay_suggest="shell32"
3527 ffprobe_deps="avcodec avformat"
3528 ffprobe_suggest="shell32"
3529
3530 # documentation
3531 podpages_deps="perl"
3532 manpages_deps="perl pod2man"
3533 htmlpages_deps="perl"
3534 htmlpages_deps_any="makeinfo_html texi2html"
3535 txtpages_deps="perl makeinfo"
3536 doc_deps_any="manpages htmlpages podpages txtpages"
3537
3538 # default parameters
3539
3540 logfile="ffbuild/config.log"
3541
3542 # installation paths
3543 prefix_default="/usr/local"
3544 bindir_default='${prefix}/bin'
3545 datadir_default='${prefix}/share/ffmpeg'
3546 docdir_default='${prefix}/share/doc/ffmpeg'
3547 incdir_default='${prefix}/include'
3548 libdir_default='${prefix}/lib'
3549 mandir_default='${prefix}/share/man'
3550
3551 # toolchain
3552 ar_default="ar"
3553 cc_default="gcc"
3554 cxx_default="g++"
3555 host_cc_default="gcc"
3556 doxygen_default="doxygen"
3557 install="install"
3558 ln_s_default="ln -s -f"
3559 nm_default="nm -g"
3560 pkg_config_default=pkg-config
3561 ranlib_default="ranlib"
3562 strip_default="strip"
3563 version_script='--version-script'
3564 objformat="elf32"
3565 x86asmexe_default="nasm"
3566 windres_default="windres"
3567 nvcc_default="nvcc"
3568 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3569 striptype="direct"
3570
3571 # OS
3572 target_os_default=$(tolower $(uname -s))
3573 host_os=$target_os_default
3574
3575 # machine
3576 if test "$target_os_default" = aix; then
3577     arch_default=$(uname -p)
3578     strip_default="strip -X32_64"
3579 else
3580     arch_default=$(uname -m)
3581 fi
3582 cpu="generic"
3583 intrinsics="none"
3584
3585 # configurable options
3586 enable $PROGRAM_LIST
3587 enable $DOCUMENT_LIST
3588 enable $EXAMPLE_LIST
3589 enable $(filter_out avresample $LIBRARY_LIST)
3590 enable stripping
3591
3592 enable asm
3593 enable debug
3594 enable doc
3595 enable faan faandct faanidct
3596 enable optimizations
3597 enable runtime_cpudetect
3598 enable safe_bitstream_reader
3599 enable static
3600 enable swscale_alpha
3601 enable valgrind_backtrace
3602
3603 sws_max_filter_size_default=256
3604 set_default sws_max_filter_size
3605
3606 # internal components are enabled by default
3607 enable $EXTRALIBS_LIST
3608
3609 # Avoid external, non-system, libraries getting enabled by dependency resolution
3610 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3611
3612 # build settings
3613 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3614 LIBPREF="lib"
3615 LIBSUF=".a"
3616 FULLNAME='$(NAME)$(BUILDSUF)'
3617 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3618 SLIBPREF="lib"
3619 SLIBSUF=".so"
3620 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3621 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3622 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3623 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3624 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3625 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3626 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3627
3628 asflags_filter=echo
3629 cflags_filter=echo
3630 ldflags_filter=echo
3631
3632 AS_C='-c'
3633 AS_O='-o $@'
3634 CC_C='-c'
3635 CC_E='-E -o $@'
3636 CC_O='-o $@'
3637 CXX_C='-c'
3638 CXX_O='-o $@'
3639 OBJCC_C='-c'
3640 OBJCC_E='-E -o $@'
3641 OBJCC_O='-o $@'
3642 X86ASM_O='-o $@'
3643 LD_O='-o $@'
3644 LD_LIB='-l%'
3645 LD_PATH='-L'
3646 HOSTCC_C='-c'
3647 HOSTCC_E='-E -o $@'
3648 HOSTCC_O='-o $@'
3649 HOSTLD_O='-o $@'
3650 NVCC_C='-c'
3651 NVCC_O='-o $@'
3652
3653 host_extralibs='-lm'
3654 host_cflags_filter=echo
3655 host_ldflags_filter=echo
3656
3657 target_path='$(CURDIR)'
3658
3659 # since the object filename is not given with the -MM flag, the compiler
3660 # is only able to print the basename, and we must add the path ourselves
3661 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3662 DEPFLAGS='-MM'
3663
3664 mkdir -p ffbuild
3665
3666 # find source path
3667 if test -f configure; then
3668     source_path=.
3669 else
3670     source_path=$(cd $(dirname "$0"); pwd)
3671     case "$source_path" in
3672         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3673     esac
3674     test -e "$source_path/config.h" &&
3675         die "Out of tree builds are impossible with config.h in source dir."
3676 fi
3677
3678 for v in "$@"; do
3679     r=${v#*=}
3680     l=${v%"$r"}
3681     r=$(sh_quote "$r")
3682     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3683 done
3684
3685 find_things_extern(){
3686     thing=$1
3687     pattern=$2
3688     file=$source_path/$3
3689     out=${4:-$thing}
3690     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3691 }
3692
3693 find_filters_extern(){
3694     file=$source_path/$1
3695     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3696     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3697 }
3698
3699 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3700 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3701 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3702 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3703 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3704 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3705 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3706 CODEC_LIST="
3707     $ENCODER_LIST
3708     $DECODER_LIST
3709 "
3710 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3711 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3712 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3713 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3714
3715 AVCODEC_COMPONENTS_LIST="
3716     $BSF_LIST
3717     $DECODER_LIST
3718     $ENCODER_LIST
3719     $HWACCEL_LIST
3720     $PARSER_LIST
3721 "
3722
3723 AVDEVICE_COMPONENTS_LIST="
3724     $INDEV_LIST
3725     $OUTDEV_LIST
3726 "
3727
3728 AVFILTER_COMPONENTS_LIST="
3729     $FILTER_LIST
3730 "
3731
3732 AVFORMAT_COMPONENTS_LIST="
3733     $DEMUXER_LIST
3734     $MUXER_LIST
3735     $PROTOCOL_LIST
3736 "
3737
3738 ALL_COMPONENTS="
3739     $AVCODEC_COMPONENTS_LIST
3740     $AVDEVICE_COMPONENTS_LIST
3741     $AVFILTER_COMPONENTS_LIST
3742     $AVFORMAT_COMPONENTS_LIST
3743 "
3744
3745 for n in $COMPONENT_LIST; do
3746     v=$(toupper ${n%s})_LIST
3747     eval enable \$$v
3748     eval ${n}_if_any="\$$v"
3749 done
3750
3751 enable $ARCH_EXT_LIST
3752
3753 die_unknown(){
3754     echo "Unknown option \"$1\"."
3755     echo "See $0 --help for available options."
3756     exit 1
3757 }
3758
3759 print_in_columns() {
3760     cols=$(expr $ncols / 24)
3761     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3762 }
3763
3764 show_list() {
3765     suffix=_$1
3766     shift
3767     echo $* | sed s/$suffix//g | print_in_columns
3768     exit 0
3769 }
3770
3771 rand_list(){
3772     IFS=', '
3773     set -- $*
3774     unset IFS
3775     for thing; do
3776         comp=${thing%:*}
3777         prob=${thing#$comp}
3778         prob=${prob#:}
3779         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3780         echo "prob ${prob:-0.5}"
3781         printf '%s\n' $comp
3782     done
3783 }
3784
3785 do_random(){
3786     action=$1
3787     shift
3788     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3789     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3790 }
3791
3792 for opt do
3793     optval="${opt#*=}"
3794     case "$opt" in
3795         --extra-ldflags=*)
3796             add_ldflags $optval
3797         ;;
3798         --extra-ldexeflags=*)
3799             add_ldexeflags $optval
3800         ;;
3801         --extra-ldsoflags=*)
3802             add_ldsoflags $optval
3803         ;;
3804         --extra-ldlibflags=*)
3805             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3806                  "removed in the future. Use --extra-ldsoflags instead."
3807             add_ldsoflags $optval
3808         ;;
3809         --extra-libs=*)
3810             add_extralibs $optval
3811         ;;
3812         --disable-devices)
3813             disable $INDEV_LIST $OUTDEV_LIST
3814         ;;
3815         --enable-debug=*)
3816             debuglevel="$optval"
3817         ;;
3818         --disable-programs)
3819             disable $PROGRAM_LIST
3820         ;;
3821         --disable-everything)
3822             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3823         ;;
3824         --disable-all)
3825             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3826             disable $LIBRARY_LIST $PROGRAM_LIST doc
3827             enable avutil
3828         ;;
3829         --enable-random|--disable-random)
3830             action=${opt%%-random}
3831             do_random ${action#--} $COMPONENT_LIST
3832         ;;
3833         --enable-random=*|--disable-random=*)
3834             action=${opt%%-random=*}
3835             do_random ${action#--} $optval
3836         ;;
3837         --enable-sdl)
3838             enable sdl2
3839         ;;
3840         --enable-*=*|--disable-*=*)
3841             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3842             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3843             eval list=\$$(toupper $thing)_LIST
3844             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3845             list=$(filter "$name" $list)
3846             [ "$list" = "" ] && warn "Option $opt did not match anything"
3847             $action $list
3848         ;;
3849         --enable-yasm|--disable-yasm)
3850             warn "The ${opt} option is only provided for compatibility and will be\n"\
3851                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3852             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3853         ;;
3854         --yasmexe=*)
3855             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3856                  "removed in the future. Use --x86asmexe instead."
3857             x86asmexe="$optval"
3858         ;;
3859         --enable-?*|--disable-?*)
3860             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3861             if is_in $option $COMPONENT_LIST; then
3862                 test $action = disable && action=unset
3863                 eval $action \$$(toupper ${option%s})_LIST
3864             elif is_in $option $CMDLINE_SELECT; then
3865                 $action $option
3866             else
3867                 die_unknown $opt
3868             fi
3869         ;;
3870         --list-*)
3871             NAME="${opt#--list-}"
3872             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3873             NAME=${NAME%s}
3874             eval show_list $NAME \$$(toupper $NAME)_LIST
3875         ;;
3876         --help|-h) show_help
3877         ;;
3878         --quiet|-q) quiet=yes
3879         ;;
3880         --fatal-warnings) enable fatal_warnings
3881         ;;
3882         --libfuzzer=*)
3883             libfuzzer_path="$optval"
3884         ;;
3885         *)
3886             optname="${opt%%=*}"
3887             optname="${optname#--}"
3888             optname=$(echo "$optname" | sed 's/-/_/g')
3889             if is_in $optname $CMDLINE_SET; then
3890                 eval $optname='$optval'
3891             elif is_in $optname $CMDLINE_APPEND; then
3892                 append $optname "$optval"
3893             else
3894                 die_unknown $opt
3895             fi
3896         ;;
3897     esac
3898 done
3899
3900 for e in $env; do
3901     eval "export $e"
3902 done
3903
3904 if disabled autodetect; then
3905
3906     # Unless iconv is explicitely disabled by the user, we still want to probe
3907     # for the iconv from the libc.
3908     disabled iconv || enable libc_iconv
3909
3910     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3911     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3912 fi
3913 # Mark specifically enabled, but normally autodetected libraries as requested.
3914 for lib in $AUTODETECT_LIBS; do
3915     enabled $lib && request $lib
3916 done
3917 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3918 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3919 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3920
3921 disabled logging && logfile=/dev/null
3922
3923 # command line configuration sanity checks
3924
3925 # we need to build at least one lib type
3926 if ! enabled_any static shared; then
3927     cat <<EOF
3928 At least one library type must be built.
3929 Specify --enable-static to build the static libraries or --enable-shared to
3930 build the shared libraries as well. To only build the shared libraries specify
3931 --disable-static in addition to --enable-shared.
3932 EOF
3933     exit 1
3934 fi
3935
3936 die_license_disabled() {
3937     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3938 }
3939
3940 die_license_disabled_gpl() {
3941     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3942 }
3943
3944 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3945 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3946
3947 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3948 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3949
3950 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3951
3952 if enabled nonfree; then
3953     license="nonfree and unredistributable"
3954 elif enabled gplv3; then
3955     license="GPL version 3 or later"
3956 elif enabled lgplv3; then
3957     license="LGPL version 3 or later"
3958 elif enabled gpl; then
3959     license="GPL version 2 or later"
3960 else
3961     license="LGPL version 2.1 or later"
3962 fi
3963
3964 enabled_all gnutls openssl &&
3965     die "GnuTLS and OpenSSL must not be enabled at the same time."
3966
3967 enabled_all gnutls mbedtls &&
3968     die "GnuTLS and mbedTLS must not be enabled at the same time."
3969
3970 enabled_all openssl mbedtls &&
3971     die "OpenSSL and mbedTLS must not be enabled at the same time."
3972
3973 # Disable all the library-specific components if the library itself
3974 # is disabled, see AVCODEC_LIST and following _LIST variables.
3975
3976 disable_components(){
3977     disabled ${1} && disable $(
3978         eval components="\$$(toupper ${1})_COMPONENTS"
3979         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3980     )
3981 }
3982
3983 map 'disable_components $v' $LIBRARY_LIST
3984
3985 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3986 set >> $logfile
3987
3988 test -n "$valgrind" && toolchain="valgrind-memcheck"
3989
3990 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
3991     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3992     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3993 }
3994
3995 case "$toolchain" in
3996     *-asan)
3997         cc_default="${toolchain%-asan}"
3998         add_cflags  -fsanitize=address
3999         add_ldflags -fsanitize=address
4000     ;;
4001     *-msan)
4002         cc_default="${toolchain%-msan}"
4003         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4004         add_ldflags -fsanitize=memory
4005     ;;
4006     *-tsan)
4007         cc_default="${toolchain%-tsan}"
4008         add_cflags  -fsanitize=thread
4009         add_ldflags -fsanitize=thread
4010         case "$toolchain" in
4011             gcc-tsan)
4012                 add_cflags  -fPIC
4013                 add_ldflags -fPIC
4014                 ;;
4015         esac
4016     ;;
4017     *-usan)
4018         cc_default="${toolchain%-usan}"
4019         add_cflags  -fsanitize=undefined
4020         add_ldflags -fsanitize=undefined
4021     ;;
4022     valgrind-*)
4023         target_exec_default="valgrind"
4024         case "$toolchain" in
4025             valgrind-massif)
4026                 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"
4027                 ;;
4028             valgrind-memcheck)
4029                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4030                 ;;
4031         esac
4032     ;;
4033     msvc)
4034         # Check whether the current MSVC version needs the C99 converter.
4035         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4036         # support enough of C99 to build ffmpeg. Default to the new
4037         # behaviour if the regexp was unable to match anything, since this
4038         # successfully parses the version number of existing supported
4039         # versions that require the converter (MSVC 2010 and 2012).
4040         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4041         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4042             cc_default="cl"
4043             cxx_default="cl"
4044         else
4045             die "Unsupported MSVC version (2013 or newer required)"
4046         fi
4047         ld_default="$source_path/compat/windows/mslink"
4048         nm_default="dumpbin -symbols"
4049         ar_default="lib"
4050         case "$arch" in
4051         aarch64|arm64)
4052             as_default="armasm64"
4053             ;;
4054         arm*)
4055             as_default="armasm"
4056             ;;
4057         esac
4058         target_os_default="win32"
4059         # Use a relative path for TMPDIR. This makes sure all the
4060         # ffconf temp files are written with a relative path, avoiding
4061         # issues with msys/win32 path conversion for MSVC parameters
4062         # such as -Fo<file> or -out:<file>.
4063         TMPDIR=.
4064     ;;
4065     icl)
4066         cc_default="icl"
4067         ld_default="xilink"
4068         nm_default="dumpbin -symbols"
4069         ar_default="xilib"
4070         target_os_default="win32"
4071         TMPDIR=.
4072     ;;
4073     gcov)
4074         add_cflags  -fprofile-arcs -ftest-coverage
4075         add_ldflags -fprofile-arcs -ftest-coverage
4076     ;;
4077     llvm-cov)
4078         add_cflags -fprofile-arcs -ftest-coverage
4079         add_ldflags --coverage
4080     ;;
4081     hardened)
4082         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4083         add_cflags   -fno-strict-overflow -fstack-protector-all
4084         add_ldflags  -Wl,-z,relro -Wl,-z,now
4085         add_cflags   -fPIE
4086         add_ldexeflags -fPIE -pie
4087     ;;
4088     ?*)
4089         die "Unknown toolchain $toolchain"
4090     ;;
4091 esac
4092
4093 if test -n "$cross_prefix"; then
4094     test -n "$arch" && test -n "$target_os" ||
4095         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4096     enable cross_compile
4097 fi
4098
4099 ar_default="${cross_prefix}${ar_default}"
4100 cc_default="${cross_prefix}${cc_default}"
4101 cxx_default="${cross_prefix}${cxx_default}"
4102 nm_default="${cross_prefix}${nm_default}"
4103 pkg_config_default="${cross_prefix}${pkg_config_default}"
4104 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4105     ranlib_default="${cross_prefix}${ranlib_default} -D"
4106 else
4107     ranlib_default="${cross_prefix}${ranlib_default}"
4108 fi
4109 strip_default="${cross_prefix}${strip_default}"
4110 windres_default="${cross_prefix}${windres_default}"
4111
4112 sysinclude_default="${sysroot}/usr/include"
4113
4114 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4115     target_exec target_os x86asmexe nvcc
4116 enabled cross_compile || host_cc_default=$cc
4117 set_default host_cc
4118
4119 pkg_config_fail_message=""
4120 if ! $pkg_config --version >/dev/null 2>&1; then
4121     warn "$pkg_config not found, library detection may fail."
4122     pkg_config=false
4123 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4124     pkg_config_fail_message="
4125 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4126 fi
4127
4128 if test $doxygen != $doxygen_default && \
4129   ! $doxygen --version >/dev/null 2>&1; then
4130     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4131 fi
4132
4133 exesuf() {
4134     case $1 in
4135         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4136     esac
4137 }
4138
4139 EXESUF=$(exesuf $target_os)
4140 HOSTEXESUF=$(exesuf $host_os)
4141
4142 # set temporary file name
4143 : ${TMPDIR:=$TEMPDIR}
4144 : ${TMPDIR:=$TMP}
4145 : ${TMPDIR:=/tmp}
4146
4147 if [ -n "$tempprefix" ] ; then
4148     mktemp(){
4149         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4150         echo "$tmpname"
4151         mkdir "$tmpname"
4152     }
4153 elif ! test_cmd mktemp -u XXXXXX; then
4154     # simple replacement for missing mktemp
4155     # NOT SAFE FOR GENERAL USE
4156     mktemp(){
4157         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4158         echo "$tmpname"
4159         mkdir "$tmpname"
4160     }
4161 fi
4162
4163 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4164     die "Unable to create temporary directory in $TMPDIR."
4165
4166 tmpfile(){
4167     tmp="${FFTMPDIR}/test"$2
4168     (set -C; exec > $tmp) 2> /dev/null ||
4169         die "Unable to create temporary file in $FFTMPDIR."
4170     eval $1=$tmp
4171 }
4172
4173 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4174 trap 'exit 2' INT
4175
4176 tmpfile TMPASM .asm
4177 tmpfile TMPC   .c
4178 tmpfile TMPCPP .cpp
4179 tmpfile TMPE   $EXESUF
4180 tmpfile TMPH   .h
4181 tmpfile TMPM   .m
4182 tmpfile TMPO   .o
4183 tmpfile TMPS   .S
4184 tmpfile TMPSH  .sh
4185 tmpfile TMPV   .ver
4186
4187 unset -f mktemp
4188
4189 chmod +x $TMPE
4190
4191 # make sure we can execute files in $TMPDIR
4192 cat > $TMPSH 2>> $logfile <<EOF
4193 #! /bin/sh
4194 EOF
4195 chmod +x $TMPSH >> $logfile 2>&1
4196 if ! $TMPSH >> $logfile 2>&1; then
4197     cat <<EOF
4198 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4199 variable to another directory and make sure that it is not mounted noexec.
4200 EOF
4201     die "Sanity test failed."
4202 fi
4203
4204 armasm_flags(){
4205     for flag; do
4206         case $flag in
4207             # Filter out MSVC cl.exe options from cflags that shouldn't
4208             # be passed to gas-preprocessor
4209             -M[TD]*)                                            ;;
4210             *)                  echo $flag                      ;;
4211         esac
4212    done
4213 }
4214
4215 cparser_flags(){
4216     for flag; do
4217         case $flag in
4218             -Wno-switch)             echo -Wno-switch-enum ;;
4219             -Wno-format-zero-length) ;;
4220             -Wdisabled-optimization) ;;
4221             -Wno-pointer-sign)       echo -Wno-other ;;
4222             *)                       echo $flag ;;
4223         esac
4224     done
4225 }
4226
4227 msvc_common_flags(){
4228     for flag; do
4229         case $flag in
4230             # In addition to specifying certain flags under the compiler
4231             # specific filters, they must be specified here as well or else the
4232             # generic catch all at the bottom will print the original flag.
4233             -Wall)                ;;
4234             -Wextra)              ;;
4235             -std=c99)             ;;
4236             # Common flags
4237             -fomit-frame-pointer) ;;
4238             -g)                   echo -Z7 ;;
4239             -fno-math-errno)      ;;
4240             -fno-common)          ;;
4241             -fno-signed-zeros)    ;;
4242             -fPIC)                ;;
4243             -mthumb)              ;;
4244             -march=*)             ;;
4245             -lz)                  echo zlib.lib ;;
4246             -lx264)               echo libx264.lib ;;
4247             -lstdc++)             ;;
4248             -l*)                  echo ${flag#-l}.lib ;;
4249             -LARGEADDRESSAWARE)   echo $flag ;;
4250             -L*)                  echo -libpath:${flag#-L} ;;
4251             *)                    echo $flag ;;
4252         esac
4253     done
4254 }
4255
4256 msvc_flags(){
4257     msvc_common_flags "$@"
4258     for flag; do
4259         case $flag in
4260             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4261                                        -wd4554 ;;
4262             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4263                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4264                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4265                                        -wd4307 \
4266                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4267         esac
4268     done
4269 }
4270
4271 icl_flags(){
4272     msvc_common_flags "$@"
4273     for flag; do
4274         case $flag in
4275             # Despite what Intel's documentation says -Wall, which is supported
4276             # on Windows, does enable remarks so disable them here.
4277             -Wall)                echo $flag -Qdiag-disable:remark ;;
4278             -std=c99)             echo -Qstd=c99 ;;
4279             -flto)                echo -ipo ;;
4280         esac
4281     done
4282 }
4283
4284 icc_flags(){
4285     for flag; do
4286         case $flag in
4287             -flto)                echo -ipo ;;
4288             *)                    echo $flag ;;
4289         esac
4290     done
4291 }
4292
4293 suncc_flags(){
4294     for flag; do
4295         case $flag in
4296             -march=*|-mcpu=*)
4297                 case "${flag#*=}" in
4298                     native)                   echo -xtarget=native       ;;
4299                     v9|niagara)               echo -xarch=sparc          ;;
4300                     ultrasparc)               echo -xarch=sparcvis       ;;
4301                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4302                     i586|pentium)             echo -xchip=pentium        ;;
4303                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4304                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4305                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4306                     pentium4*)          echo -xtarget=pentium4           ;;
4307                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4308                     *-sse3)             echo -xarch=sse3                 ;;
4309                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4310                     bonnell)                   echo -xarch=ssse3         ;;
4311                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4312                     westmere)                  echo -xtarget=westmere    ;;
4313                     silvermont)                echo -xarch=sse4_2        ;;
4314                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4315                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4316                                                echo -xarch=avx           ;;
4317                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4318                     btver1)                    echo -xarch=amdsse4a      ;;
4319                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4320                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4321                     k8|opteron|athlon64|athlon-fx)
4322                                                echo -xarch=sse2a         ;;
4323                     athlon*)                   echo -xarch=pentium_proa  ;;
4324                 esac
4325                 ;;
4326             -std=c99)             echo -xc99              ;;
4327             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4328             -fPIC)                echo -KPIC -xcode=pic32 ;;
4329             -W*,*)                echo $flag              ;;
4330             -f*-*|-W*|-mimpure-text)                      ;;
4331             -shared)              echo -G                 ;;
4332             *)                    echo $flag              ;;
4333         esac
4334     done
4335 }
4336
4337 probe_cc(){
4338     pfx=$1
4339     _cc=$2
4340     first=$3
4341
4342     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4343     unset _ld_o _ldflags _ld_lib _ld_path
4344     unset _depflags _DEPCMD _DEPFLAGS
4345     _flags_filter=echo
4346
4347     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4348         true # no-op to avoid reading stdin in following checks
4349     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4350         _type=llvm_gcc
4351         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4352         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4353         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4354         _cflags_speed='-O3'
4355         _cflags_size='-Os'
4356     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4357         _type=gcc
4358         gcc_version=$($_cc --version | head -n1)
4359         gcc_basever=$($_cc -dumpversion)
4360         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4361         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4362         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4363         case $gcc_basever in
4364             2) ;;
4365             2.*) ;;
4366             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4367         esac
4368         if [ "$first" = true ]; then
4369             case $gcc_basever in
4370                 4.2*)
4371                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4372             esac
4373         fi
4374         _cflags_speed='-O3'
4375         _cflags_size='-Os'
4376     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4377         _type=icc
4378         _ident=$($_cc --version | head -n1)
4379         _depflags='-MMD'
4380         _cflags_speed='-O3'
4381         _cflags_size='-Os'
4382         _cflags_noopt='-O1'
4383         _flags_filter=icc_flags
4384     elif $_cc -v 2>&1 | grep -q xlc; then
4385         _type=xlc
4386         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4387         _cflags_speed='-O5'
4388         _cflags_size='-O5 -qcompact'
4389     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4390         test -d "$sysroot" || die "No valid sysroot specified."
4391         _type=armcc
4392         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4393         armcc_conf="$PWD/armcc.conf"
4394         $_cc --arm_linux_configure                 \
4395              --arm_linux_config_file="$armcc_conf" \
4396              --configure_sysroot="$sysroot"        \
4397              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4398              die "Error creating armcc configuration file."
4399         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4400         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4401         as_default="${cross_prefix}gcc"
4402         _depflags='-MMD'
4403         _cflags_speed='-O3'
4404         _cflags_size='-Os'
4405     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4406         _type=clang
4407         _ident=$($_cc --version 2>/dev/null | head -n1)
4408         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4409         _cflags_speed='-O3'
4410         _cflags_size='-Oz'
4411     elif $_cc -V 2>&1 | grep -q Sun; then
4412         _type=suncc
4413         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4414         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4415         _DEPFLAGS='-xM1 -xc99'
4416         _ldflags='-std=c99'
4417         _cflags_speed='-O5'
4418         _cflags_size='-O5 -xspace'
4419         _flags_filter=suncc_flags
4420     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4421         _type=pathscale
4422         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4423         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4424         _cflags_speed='-O2'
4425         _cflags_size='-Os'
4426         _flags_filter='filter_out -Wdisabled-optimization'
4427     elif $_cc -v 2>&1 | grep -q Open64; then
4428         _type=open64
4429         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4430         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4431         _cflags_speed='-O2'
4432         _cflags_size='-Os'
4433         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4434     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4435         _type=armasm
4436         _ident=$($_cc | head -n1)
4437         # 4509: "This form of conditional instruction is deprecated"
4438         _flags="-nologo -ignore 4509"
4439         _flags_filter=armasm_flags
4440     elif $_cc 2>&1 | grep -q Intel; then
4441         _type=icl
4442         _ident=$($_cc 2>&1 | head -n1)
4443         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4444         # Not only is O3 broken on 13.x+ but it is slower on all previous
4445         # versions (tested) as well.
4446         _cflags_speed="-O2"
4447         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4448         if $_cc 2>&1 | grep -q Linker; then
4449             _ld_o='-out:$@'
4450         else
4451             _ld_o='-Fe$@'
4452         fi
4453         _cc_o='-Fo$@'
4454         _cc_e='-P'
4455         _flags_filter=icl_flags
4456         _ld_lib='lib%.a'
4457         _ld_path='-libpath:'
4458         # -Qdiag-error to make icl error when seeing certain unknown arguments
4459         _flags='-nologo -Qdiag-error:4044,10157'
4460         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4461         # with MSVC which enables it by default.
4462         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4463         disable stripping
4464     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4465         # lld can emulate multiple different linkers; in ms link.exe mode,
4466         # the -? parameter gives the help output which contains an identifyable
4467         # string, while it gives an error in other modes.
4468         _type=lld-link
4469         # The link.exe mode doesn't have a switch for getting the version,
4470         # but we can force it back to gnu mode and get the version from there.
4471         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4472         _ld_o='-out:$@'
4473         _flags_filter=msvc_flags
4474         _ld_lib='lib%.a'
4475         _ld_path='-libpath:'
4476     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4477         _type=msvc
4478         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4479         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4480         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4481         _cflags_speed="-O2"
4482         _cflags_size="-O1"
4483         _cflags_noopt="-O1"
4484         if $_cc -nologo- 2>&1 | grep -q Linker; then
4485             _ld_o='-out:$@'
4486         else
4487             _ld_o='-Fe$@'
4488         fi
4489         _cc_o='-Fo$@'
4490         _cc_e='-P -Fi$@'
4491         _flags_filter=msvc_flags
4492         _ld_lib='lib%.a'
4493         _ld_path='-libpath:'
4494         _flags='-nologo'
4495         disable stripping
4496     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4497         _type=cparser
4498         _ident=$($_cc --version | head -n1)
4499         _depflags='-MMD'
4500         _cflags_speed='-O4'
4501         _cflags_size='-O2'
4502         _flags_filter=cparser_flags
4503     fi
4504
4505     eval ${pfx}_type=\$_type
4506     eval ${pfx}_ident=\$_ident
4507 }
4508
4509 set_ccvars(){
4510     eval ${1}_C=\${_cc_c-\${${1}_C}}
4511     eval ${1}_E=\${_cc_e-\${${1}_E}}
4512     eval ${1}_O=\${_cc_o-\${${1}_O}}
4513
4514     if [ -n "$_depflags" ]; then
4515         eval ${1}_DEPFLAGS=\$_depflags
4516     else
4517         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4518         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4519         eval DEP${1}FLAGS=\$_flags
4520     fi
4521 }
4522
4523 probe_cc cc "$cc" "true"
4524 cflags_filter=$_flags_filter
4525 cflags_speed=$_cflags_speed
4526 cflags_size=$_cflags_size
4527 cflags_noopt=$_cflags_noopt
4528 add_cflags $_flags $_cflags
4529 cc_ldflags=$_ldflags
4530 set_ccvars CC
4531 set_ccvars CXX
4532
4533 probe_cc hostcc "$host_cc"
4534 host_cflags_filter=$_flags_filter
4535 host_cflags_speed=$_cflags_speed
4536 add_host_cflags  $_flags $_cflags
4537 set_ccvars HOSTCC
4538
4539 test -n "$cc_type" && enable $cc_type ||
4540     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4541
4542 : ${as_default:=$cc}
4543 : ${objcc_default:=$cc}
4544 : ${dep_cc_default:=$cc}
4545 : ${ld_default:=$cc}
4546 : ${host_ld_default:=$host_cc}
4547 set_default ar as objcc dep_cc ld ln_s host_ld windres
4548
4549 probe_cc as "$as"
4550 asflags_filter=$_flags_filter
4551 add_asflags $_flags $_cflags
4552 set_ccvars AS
4553
4554 probe_cc objcc "$objcc"
4555 objcflags_filter=$_flags_filter
4556 add_objcflags $_flags $_cflags
4557 set_ccvars OBJC
4558
4559 probe_cc ld "$ld"
4560 ldflags_filter=$_flags_filter
4561 add_ldflags $_flags $_ldflags
4562 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4563 LD_O=${_ld_o-$LD_O}
4564 LD_LIB=${_ld_lib-$LD_LIB}
4565 LD_PATH=${_ld_path-$LD_PATH}
4566
4567 probe_cc hostld "$host_ld"
4568 host_ldflags_filter=$_flags_filter
4569 add_host_ldflags $_flags $_ldflags
4570 HOSTLD_O=${_ld_o-$HOSTLD_O}
4571
4572 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4573     probe_cc depcc "$dep_cc"
4574     CCDEP=${_DEPCMD:-$DEPCMD}
4575     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4576     DEPCCFLAGS=$_flags
4577 fi
4578
4579 if $ar 2>&1 | grep -q Microsoft; then
4580     arflags="-nologo"
4581     ar_o='-out:$@'
4582 elif $ar 2>&1 | grep -q "\[D\] "; then
4583     arflags="rcD"
4584     ar_o='$@'
4585 else
4586     arflags="rc"
4587     ar_o='$@'
4588 fi
4589
4590 add_cflags $extra_cflags
4591 add_cxxflags $extra_cxxflags
4592 add_objcflags $extra_objcflags
4593 add_asflags $extra_cflags
4594
4595 if test -n "$sysroot"; then
4596     case "$cc_type" in
4597         gcc|llvm_gcc|clang)
4598             add_cppflags --sysroot="$sysroot"
4599             add_ldflags --sysroot="$sysroot"
4600         ;;
4601     esac
4602 fi
4603
4604 if test "$cpu" = host; then
4605     enabled cross_compile &&
4606         die "--cpu=host makes no sense when cross-compiling."
4607
4608     case "$cc_type" in
4609         gcc|llvm_gcc)
4610             check_native(){
4611                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4612                 sed -n "/cc1.*$1=/{
4613                             s/.*$1=\\([^ ]*\\).*/\\1/
4614                             p
4615                             q
4616                         }" $TMPE
4617             }
4618             cpu=$(check_native -march || check_native -mcpu)
4619         ;;
4620         clang)
4621             check_native(){
4622                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4623                 sed -n "/cc1.*-target-cpu /{
4624                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4625                             p
4626                             q
4627                         }" $TMPE
4628             }
4629             cpu=$(check_native -march)
4630         ;;
4631     esac
4632
4633     test "${cpu:-host}" = host &&
4634         die "--cpu=host not supported with compiler $cc"
4635 fi
4636
4637 # Deal with common $arch aliases
4638 case "$arch" in
4639     aarch64|arm64)
4640         arch="aarch64"
4641     ;;
4642     arm*|iPad*|iPhone*)
4643         arch="arm"
4644     ;;
4645     mips*|IP*)
4646         case "$arch" in
4647         *el)
4648             add_cppflags -EL
4649             add_ldflags -EL
4650         ;;
4651         *eb)
4652             add_cppflags -EB
4653             add_ldflags -EB
4654         ;;
4655         esac
4656         arch="mips"
4657     ;;
4658     parisc*|hppa*)
4659         arch="parisc"
4660     ;;
4661     "Power Macintosh"|ppc*|powerpc*)
4662         arch="ppc"
4663     ;;
4664     s390|s390x)
4665         arch="s390"
4666     ;;
4667     sh4|sh)
4668         arch="sh4"
4669     ;;
4670     sun4*|sparc*)
4671         arch="sparc"
4672     ;;
4673     tilegx|tile-gx)
4674         arch="tilegx"
4675     ;;
4676     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4677         arch="x86"
4678     ;;
4679 esac
4680
4681 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4682 enable $arch
4683
4684 # Add processor-specific flags
4685 if enabled aarch64; then
4686
4687     case $cpu in
4688         armv*)
4689             cpuflags="-march=$cpu"
4690         ;;
4691         *)
4692             cpuflags="-mcpu=$cpu"
4693         ;;
4694     esac
4695
4696 elif enabled alpha; then
4697
4698     cpuflags="-mcpu=$cpu"
4699
4700 elif enabled arm; then
4701
4702     check_arm_arch() {
4703         test_cpp_condition stddef.h \
4704             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4705             $cpuflags
4706     }
4707
4708     probe_arm_arch() {
4709         if   check_arm_arch 4;        then echo armv4
4710         elif check_arm_arch 4T;       then echo armv4t
4711         elif check_arm_arch 5;        then echo armv5
4712         elif check_arm_arch 5E;       then echo armv5e
4713         elif check_arm_arch 5T;       then echo armv5t
4714         elif check_arm_arch 5TE;      then echo armv5te
4715         elif check_arm_arch 5TEJ;     then echo armv5te
4716         elif check_arm_arch 6;        then echo armv6
4717         elif check_arm_arch 6J;       then echo armv6j
4718         elif check_arm_arch 6K;       then echo armv6k
4719         elif check_arm_arch 6Z;       then echo armv6z
4720         elif check_arm_arch 6KZ;      then echo armv6zk
4721         elif check_arm_arch 6ZK;      then echo armv6zk
4722         elif check_arm_arch 6T2;      then echo armv6t2
4723         elif check_arm_arch 7;        then echo armv7
4724         elif check_arm_arch 7A  7_A;  then echo armv7-a
4725         elif check_arm_arch 7S;       then echo armv7-a
4726         elif check_arm_arch 7R  7_R;  then echo armv7-r
4727         elif check_arm_arch 7M  7_M;  then echo armv7-m
4728         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4729         elif check_arm_arch 8A  8_A;  then echo armv8-a
4730         fi
4731     }
4732
4733     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4734
4735     case $cpu in
4736         armv*)
4737             cpuflags="-march=$cpu"
4738             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4739         ;;
4740         *)
4741             cpuflags="-mcpu=$cpu"
4742             case $cpu in
4743                 cortex-a*)                               subarch=armv7a  ;;
4744                 cortex-r*)                               subarch=armv7r  ;;
4745                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4746                 arm11*)                                  subarch=armv6   ;;
4747                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4748                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4749                 *)                             subarch=$(probe_arm_arch) ;;
4750             esac
4751         ;;
4752     esac
4753
4754     case "$subarch" in
4755         armv5t*)    enable fast_clz                ;;
4756         armv[6-8]*)
4757             enable fast_clz
4758             disabled fast_unaligned || enable fast_unaligned
4759             ;;
4760     esac
4761
4762 elif enabled avr32; then
4763
4764     case $cpu in
4765         ap7[02]0[0-2])
4766             subarch="avr32_ap"
4767             cpuflags="-mpart=$cpu"
4768         ;;
4769         ap)
4770             subarch="avr32_ap"
4771             cpuflags="-march=$cpu"
4772         ;;
4773         uc3[ab]*)
4774             subarch="avr32_uc"
4775             cpuflags="-mcpu=$cpu"
4776         ;;
4777         uc)
4778             subarch="avr32_uc"
4779             cpuflags="-march=$cpu"
4780         ;;
4781     esac
4782
4783 elif enabled bfin; then
4784
4785     cpuflags="-mcpu=$cpu"
4786
4787 elif enabled mips; then
4788
4789     cpuflags="-march=$cpu"
4790
4791     if [ "$cpu" != "generic" ]; then
4792         disable mips32r2
4793         disable mips32r5
4794         disable mips64r2
4795         disable mips32r6
4796         disable mips64r6
4797         disable loongson2
4798         disable loongson3
4799
4800         case $cpu in
4801             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4802                 enable mips32r2
4803                 disable msa
4804             ;;
4805             p5600|i6400|p6600)
4806                 disable mipsdsp
4807                 disable mipsdspr2
4808             ;;
4809             loongson*)
4810                 enable loongson2
4811                 enable loongson3
4812                 enable local_aligned
4813                 enable simd_align_16
4814                 enable fast_64bit
4815                 enable fast_clz
4816                 enable fast_cmov
4817                 enable fast_unaligned
4818                 disable aligned_stack
4819                 disable mipsfpu
4820                 disable mipsdsp
4821                 disable mipsdspr2
4822                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4823                 if [ $cc == gcc ]; then
4824                     gcc_version=$(gcc -dumpversion)
4825                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4826                         expensive_optimization_flag=""
4827                     else
4828                         expensive_optimization_flag="-fno-expensive-optimizations"
4829                     fi
4830                 fi
4831                 case $cpu in
4832                     loongson3*)
4833                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4834                     ;;
4835                     loongson2e)
4836                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4837                     ;;
4838                     loongson2f)
4839                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4840                     ;;
4841                 esac
4842             ;;
4843             *)
4844                 # Unknown CPU. Disable everything.
4845                 warn "unknown CPU. Disabling all MIPS optimizations."
4846                 disable mipsfpu
4847                 disable mipsdsp
4848                 disable mipsdspr2
4849                 disable msa
4850                 disable mmi
4851             ;;
4852         esac
4853
4854         case $cpu in
4855             24kc)
4856                 disable mipsfpu
4857                 disable mipsdsp
4858                 disable mipsdspr2
4859             ;;
4860             24kf*)
4861                 disable mipsdsp
4862                 disable mipsdspr2
4863             ;;
4864             24kec|34kc|1004kc)
4865                 disable mipsfpu
4866                 disable mipsdspr2
4867             ;;
4868             24kef*|34kf*|1004kf*)
4869                 disable mipsdspr2
4870             ;;
4871             74kc)
4872                 disable mipsfpu
4873             ;;
4874             p5600)
4875                 enable mips32r5
4876                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4877             ;;
4878             i6400)
4879                 enable mips64r6
4880                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4881             ;;
4882             p6600)
4883                 enable mips64r6
4884                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4885             ;;
4886         esac
4887     else
4888         # We do not disable anything. Is up to the user to disable the unwanted features.
4889         warn 'generic cpu selected'
4890     fi
4891
4892 elif enabled ppc; then
4893
4894     disable ldbrx
4895
4896     case $(tolower $cpu) in
4897         601|ppc601|powerpc601)
4898             cpuflags="-mcpu=601"
4899             disable altivec
4900         ;;
4901         603*|ppc603*|powerpc603*)
4902             cpuflags="-mcpu=603"
4903             disable altivec
4904         ;;
4905         604*|ppc604*|powerpc604*)
4906             cpuflags="-mcpu=604"
4907             disable altivec
4908         ;;
4909         g3|75*|ppc75*|powerpc75*)
4910             cpuflags="-mcpu=750"
4911             disable altivec
4912         ;;
4913         g4|745*|ppc745*|powerpc745*)
4914             cpuflags="-mcpu=7450"
4915             disable vsx
4916         ;;
4917         74*|ppc74*|powerpc74*)
4918             cpuflags="-mcpu=7400"
4919             disable vsx
4920         ;;
4921         g5|970|ppc970|powerpc970)
4922             cpuflags="-mcpu=970"
4923             disable vsx
4924         ;;
4925         power[3-6]*)
4926             cpuflags="-mcpu=$cpu"
4927             disable vsx
4928         ;;
4929         power[7-8]*)
4930             cpuflags="-mcpu=$cpu"
4931         ;;
4932         cell)
4933             cpuflags="-mcpu=cell"
4934             enable ldbrx
4935             disable vsx
4936         ;;
4937         e500mc)
4938             cpuflags="-mcpu=e500mc"
4939             disable altivec
4940         ;;
4941         e500v2)
4942             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4943             disable altivec
4944             disable dcbzl
4945         ;;
4946         e500)
4947             cpuflags="-mcpu=8540 -mhard-float"
4948             disable altivec
4949             disable dcbzl
4950         ;;
4951     esac
4952
4953 elif enabled sparc; then
4954
4955     case $cpu in
4956         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4957             cpuflags="-mcpu=$cpu"
4958         ;;
4959         ultrasparc*|niagara[234])
4960             cpuflags="-mcpu=$cpu"
4961         ;;
4962     esac
4963
4964 elif enabled x86; then
4965
4966     case $cpu in
4967         i[345]86|pentium)
4968             cpuflags="-march=$cpu"
4969             disable i686
4970             disable mmx
4971         ;;
4972         # targets that do NOT support nopl and conditional mov (cmov)
4973         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4974             cpuflags="-march=$cpu"
4975             disable i686
4976         ;;
4977         # targets that do support nopl and conditional mov (cmov)
4978         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4979         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4980         |amdfam10|barcelona|b[dt]ver*|znver*)
4981             cpuflags="-march=$cpu"
4982             enable i686
4983             enable fast_cmov
4984         ;;
4985         # targets that do support conditional mov but on which it's slow
4986         pentium4|pentium4m|prescott|nocona)
4987             cpuflags="-march=$cpu"
4988             enable i686
4989             disable fast_cmov
4990         ;;
4991     esac
4992
4993 fi
4994
4995 if [ "$cpu" != generic ]; then
4996     add_cflags  $cpuflags
4997     add_asflags $cpuflags
4998     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4999 fi
5000
5001 # compiler sanity check
5002 test_exec <<EOF
5003 int main(void){ return 0; }
5004 EOF
5005 if test "$?" != 0; then
5006     echo "$cc is unable to create an executable file."
5007     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5008         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5009         echo "Only do this if you know what cross compiling means."
5010     fi
5011     die "C compiler test failed."
5012 fi
5013
5014 add_cppflags -D_ISOC99_SOURCE
5015 add_cxxflags -D__STDC_CONSTANT_MACROS
5016 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5017
5018 # some compilers silently accept -std=c11, so we also need to check that the
5019 # version macro is defined properly
5020 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5021     add_cflags -std=c11 ||
5022     check_cflags -std=c99
5023
5024 check_cppflags -D_FILE_OFFSET_BITS=64
5025 check_cppflags -D_LARGEFILE_SOURCE
5026
5027 add_host_cppflags -D_ISOC99_SOURCE
5028 check_host_cflags -std=c99
5029 check_host_cflags -Wall
5030 check_host_cflags $host_cflags_speed
5031
5032 check_64bit(){
5033     arch32=$1
5034     arch64=$2
5035     expr=${3:-'sizeof(void *) > 4'}
5036     test_code cc "" "int test[2*($expr) - 1]" &&
5037         subarch=$arch64 || subarch=$arch32
5038     enable $subarch
5039 }
5040
5041 case "$arch" in
5042     aarch64|alpha|ia64)
5043         enabled shared && enable_weak pic
5044     ;;
5045     mips)
5046         check_64bit mips mips64 '_MIPS_SIM > 1'
5047         enabled shared && enable_weak pic
5048     ;;
5049     parisc)
5050         check_64bit parisc parisc64
5051         enabled shared && enable_weak pic
5052     ;;
5053     ppc)
5054         check_64bit ppc ppc64
5055         enabled shared && enable_weak pic
5056     ;;
5057     s390)
5058         check_64bit s390 s390x
5059         enabled shared && enable_weak pic
5060     ;;
5061     sparc)
5062         check_64bit sparc sparc64
5063         enabled shared && enable_weak pic
5064     ;;
5065     x86)
5066         check_64bit x86_32 x86_64
5067         # Treat x32 as x64 for now. Note it also needs pic if shared
5068         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5069             subarch=x86_64 && enable x86_64 && disable x86_32
5070         if enabled x86_64; then
5071             enabled shared && enable_weak pic
5072             objformat=elf64
5073         fi
5074     ;;
5075 esac
5076
5077 # OS specific
5078 case $target_os in
5079     aix)
5080         SHFLAGS=-shared
5081         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5082         enabled shared && add_ldflags -Wl,-brtl
5083         arflags='-Xany -r -c'
5084         striptype=""
5085         ;;
5086     android)
5087         disable symver
5088         enable section_data_rel_ro
5089         add_cflags -fPIE
5090         add_ldexeflags -fPIE -pie
5091         SLIB_INSTALL_NAME='$(SLIBNAME)'
5092         SLIB_INSTALL_LINKS=
5093         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5094         ;;
5095     haiku)
5096         prefix_default="/boot/common"
5097         network_extralibs="-lnetwork"
5098         host_extralibs=
5099         ;;
5100     sunos)
5101         SHFLAGS='-shared -Wl,-h,$$(@F)'
5102         enabled x86 && append SHFLAGS -mimpure-text
5103         network_extralibs="-lsocket -lnsl"
5104         add_cppflags -D__EXTENSIONS__
5105         # When using suncc to build, the Solaris linker will mark
5106         # an executable with each instruction set encountered by
5107         # the Solaris assembler.  As our libraries contain their own
5108         # guards for processor-specific code, instead suppress
5109         # generation of the HWCAPS ELF section on Solaris x86 only.
5110         enabled_all suncc x86 &&
5111             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5112             add_ldflags -Wl,-M,mapfile
5113         nm_default='nm -P -g'
5114         version_script='-M'
5115         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5116         ;;
5117     netbsd)
5118         disable symver
5119         oss_indev_extralibs="-lossaudio"
5120         oss_outdev_extralibs="-lossaudio"
5121         enabled gcc || check_ldflags -Wl,-zmuldefs
5122         ;;
5123     openbsd|bitrig)
5124         disable symver
5125         striptype=""
5126         SHFLAGS='-shared'
5127         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5128         SLIB_INSTALL_LINKS=
5129         oss_indev_extralibs="-lossaudio"
5130         oss_outdev_extralibs="-lossaudio"
5131         ;;
5132     dragonfly)
5133         disable symver
5134         ;;
5135     freebsd)
5136         ;;
5137     bsd/os)
5138         add_extralibs -lpoll -lgnugetopt
5139         strip="strip -d"
5140         ;;
5141     darwin)
5142         enabled ppc && add_asflags -force_cpusubtype_ALL
5143         install_name_dir_default='$(SHLIBDIR)'
5144         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5145         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5146         strip="${strip} -x"
5147         add_ldflags -Wl,-dynamic,-search_paths_first
5148         check_cflags -Werror=partial-availability
5149         SLIBSUF=".dylib"
5150         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5151         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5152         enabled x86_64 && objformat="macho64" || objformat="macho32"
5153         enabled_any pic shared x86_64 ||
5154             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5155         check_header dispatch/dispatch.h &&
5156             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5157         if test -n "$sysroot"; then
5158             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5159             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5160         fi
5161         version_script='-exported_symbols_list'
5162         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5163         ;;
5164     msys*)
5165         die "Native MSYS builds are discouraged, please use the MINGW environment."
5166         ;;
5167     mingw32*|mingw64*)
5168         target_os=mingw32
5169         LIBTARGET=i386
5170         if enabled x86_64; then
5171             LIBTARGET="i386:x86-64"
5172         elif enabled arm; then
5173             LIBTARGET="arm"
5174         elif enabled aarch64; then
5175             LIBTARGET="arm64"
5176         fi
5177         if enabled shared; then
5178             # Cannot build both shared and static libs when using dllimport.
5179             disable static
5180         fi
5181         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5182         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5183         shlibdir_default="$bindir_default"
5184         SLIBPREF=""
5185         SLIBSUF=".dll"
5186         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5187         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5188         if test_cmd lib.exe -list; then
5189             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5190             if enabled x86_64; then
5191                 LIBTARGET=x64
5192             fi
5193         else
5194             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5195         fi
5196         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5197         SLIB_INSTALL_LINKS=
5198         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5199         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5200         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5201         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5202         enabled x86_64 && objformat="win64" || objformat="win32"
5203         dlltool="${cross_prefix}dlltool"
5204         ranlib=:
5205         enable dos_paths
5206         check_ldflags -Wl,--nxcompat,--dynamicbase
5207         # Lets work around some stupidity in binutils.
5208         # ld will strip relocations from executables even though we need them
5209         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5210         # however ld then forgets what the entry point should be (oops) so we
5211         # have to manually (re)set it.
5212         if enabled x86_32; then
5213             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5214         elif enabled x86_64; then
5215             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5216             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5217             # Set image base >4GB for extra entropy with HEASLR
5218             add_ldexeflags -Wl,--image-base,0x140000000
5219             append SHFLAGS -Wl,--image-base,0x180000000
5220         fi
5221         ;;
5222     win32|win64)
5223         disable symver
5224         if enabled shared; then
5225             # Link to the import library instead of the normal static library
5226             # for shared libs.
5227             LD_LIB='%.lib'
5228             # Cannot build both shared and static libs with MSVC or icl.
5229             disable static
5230         fi
5231         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5232         shlibdir_default="$bindir_default"
5233         SLIBPREF=""
5234         SLIBSUF=".dll"
5235         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5236         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5237         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5238         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5239         SLIB_INSTALL_LINKS=
5240         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5241         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5242         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5243         enabled x86_64 && objformat="win64" || objformat="win32"
5244         ranlib=:
5245         enable dos_paths
5246         ;;
5247     cygwin*)
5248         target_os=cygwin
5249         shlibdir_default="$bindir_default"
5250         SLIBPREF="cyg"
5251         SLIBSUF=".dll"
5252         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5253         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5254         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5255         SLIB_INSTALL_LINKS=
5256         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5257         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5258         enabled x86_64 && objformat="win64" || objformat="win32"
5259         enable dos_paths
5260         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5261         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5262         ;;
5263     *-dos|freedos|opendos)
5264         network_extralibs="-lsocket"
5265         objformat="coff"
5266         enable dos_paths
5267         add_cppflags -U__STRICT_ANSI__
5268         ;;
5269     linux)
5270         enable section_data_rel_ro
5271         enabled_any arm aarch64 && enable_weak linux_perf
5272         ;;
5273     irix*)
5274         target_os=irix
5275         ranlib="echo ignoring ranlib"
5276         ;;
5277     os/2*)
5278         strip="lxlite -CS"
5279         striptype=""
5280         objformat="aout"
5281         add_cppflags -D_GNU_SOURCE
5282         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5283         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5284         LIBSUF="_s.a"
5285         SLIBPREF=""
5286         SLIBSUF=".dll"
5287         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5288         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5289         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5290             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5291             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5292             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5293             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5294         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5295             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5296         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5297         SLIB_INSTALL_LINKS=
5298         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5299         enable dos_paths
5300         enable_weak os2threads
5301         ;;
5302     gnu/kfreebsd)
5303         add_cppflags -D_BSD_SOURCE
5304         ;;
5305     gnu)
5306         ;;
5307     qnx)
5308         add_cppflags -D_QNX_SOURCE
5309         network_extralibs="-lsocket"
5310         ;;
5311     symbian)
5312         SLIBSUF=".dll"
5313         enable dos_paths
5314         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5315         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5316         add_ldflags -Wl,--target1-abs,--no-undefined \
5317                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5318                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5319         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5320                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5321                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5322         ;;
5323     minix)
5324         ;;
5325     none)
5326         ;;
5327     *)
5328         die "Unknown OS '$target_os'."
5329         ;;
5330 esac
5331
5332 # test if creating links works
5333 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5334 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5335 mkdir "$link_dest"
5336 $ln_s "$link_dest" "$link_name"
5337 touch "$link_dest/test_file"
5338 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5339     # create link to source path
5340     [ -e src ] && rm src
5341     $ln_s "$source_path" src
5342     source_link=src
5343 else
5344     # creating directory links doesn't work
5345     # fall back to using the full source path
5346     source_link="$source_path"
5347 fi
5348 # cleanup
5349 rm -r "$link_dest"
5350 rm -r "$link_name"
5351
5352 # determine libc flavour
5353
5354 probe_libc(){
5355     pfx=$1
5356     pfx_no_=${pfx%_}
5357     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5358     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5359         eval ${pfx}libc_type=uclibc
5360         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5361     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5362         eval ${pfx}libc_type=glibc
5363         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5364     # MinGW headers can be installed on Cygwin, so check for newlib first.
5365     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5366         eval ${pfx}libc_type=newlib
5367         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5368     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5369     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5370         eval ${pfx}libc_type=mingw64
5371         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5372             add_compat msvcrt/snprintf.o
5373             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5374         fi
5375         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5376         eval test \$${pfx_no_}cc_type = "gcc" &&
5377             add_${pfx}cppflags -D__printf__=__gnu_printf__
5378         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5379             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5380     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5381          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5382         eval ${pfx}libc_type=mingw32
5383         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5384             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5385             die "ERROR: MinGW32 runtime version must be >= 3.15."
5386         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5387         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5388             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5389         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5390             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5391         eval test \$${pfx_no_}cc_type = "gcc" &&
5392             add_${pfx}cppflags -D__printf__=__gnu_printf__
5393     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5394         eval ${pfx}libc_type=msvcrt
5395         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5396             if [ "$pfx" = host_ ]; then
5397                 add_host_cppflags -Dsnprintf=_snprintf
5398             else
5399                 add_compat strtod.o strtod=avpriv_strtod
5400                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5401                                              _snprintf=avpriv_snprintf  \
5402                                              vsnprintf=avpriv_vsnprintf
5403             fi
5404         fi
5405         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5406         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5407         # 0x601 by default unless something else is set by the user.
5408         # This can easily lead to us detecting functions only present
5409         # in such new versions and producing binaries requiring windows 7.0.
5410         # Therefore explicitly set the default to Vista unless the user has
5411         # set something else on the command line.
5412         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5413         # family. For these cases, configure is free to use any functions
5414         # found in the SDK headers by default. (Alternatively, we could force
5415         # _WIN32_WINNT to 0x0602 in that case.)
5416         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5417             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5418 #ifdef WINAPI_FAMILY
5419 #include <winapifamily.h>
5420 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5421 #error not desktop
5422 #endif
5423 #endif
5424 EOF
5425         if [ "$pfx" = "" ]; then
5426             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5427             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5428         fi
5429     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5430         eval ${pfx}libc_type=klibc
5431     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5432         eval ${pfx}libc_type=bionic
5433     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5434         eval ${pfx}libc_type=solaris
5435         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5436     fi
5437     test_${pfx}cc <<EOF
5438 #include <time.h>
5439 void *v = localtime_r;
5440 EOF
5441 test "$?" != 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
5442 #include <time.h>
5443 void *v = localtime_r;
5444 EOF
5445
5446     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5447 }
5448
5449 probe_libc
5450 probe_libc host_
5451
5452 # hacks for compiler/libc/os combinations
5453
5454 case $libc_type in
5455     bionic)
5456         add_compat strtod.o strtod=avpriv_strtod
5457         ;;
5458 esac
5459
5460 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5461     add_cppflags '-I\$(SRC_PATH)/compat/float'
5462
5463 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5464
5465 set_default libdir
5466 : ${shlibdir_default:="$libdir"}
5467 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5468
5469 set_default $PATHS_LIST
5470 set_default nm
5471
5472 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5473
5474 enable_weak_pic() {
5475     disabled pic && return
5476     enable pic
5477     add_cppflags -DPIC
5478     case "$target_os" in
5479     mingw*|cygwin*|win*)
5480         ;;
5481     *)
5482         add_cflags -fPIC
5483         add_asflags -fPIC
5484         ;;
5485     esac
5486 }
5487
5488 enabled pic && enable_weak_pic
5489
5490 test_cc <<EOF || die "Symbol mangling check failed."
5491 int ff_extern;
5492 EOF
5493 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5494 extern_prefix=${sym%%ff_extern*}
5495
5496 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5497
5498 for restrict_keyword in restrict __restrict__ __restrict ""; do
5499     test_code cc "" "char * $restrict_keyword p" && break
5500 done
5501
5502 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5503
5504 # The global variable ensures the bits appear unchanged in the object file.
5505 test_cc <<EOF || die "endian test failed"
5506 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5507 EOF
5508 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5509
5510 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5511
5512 if ! enabled ppc64 || enabled bigendian; then
5513     disable vsx
5514 fi
5515
5516 check_gas() {
5517     log "check_gas using '$as' as AS"
5518     # :vararg is used on aarch64, arm and ppc altivec
5519     check_as vararg "
5520 .macro m n, y:vararg=0
5521 \n: .int \y
5522 .endm
5523 m x" || return 1
5524     # .altmacro is only used in arm asm
5525     ! enabled arm || check_as gnu_as ".altmacro"
5526 }
5527
5528 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5529     nogas=:
5530     enabled_any arm aarch64 && nogas=die
5531     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5532     as_noop=-v
5533
5534     case $as_type in
5535         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5536         gcc)  gaspp_as_type=gas ;;
5537         *)    gaspp_as_type=$as_type ;;
5538     esac
5539
5540     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5541
5542     test "${as#*gas-preprocessor.pl}" != "$as" ||
5543     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5544         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5545
5546     if ! check_gas ; then
5547         as=${gas:=$as}
5548         check_gas || \
5549             $nogas "GNU assembler not found, install/update gas-preprocessor"
5550     fi
5551
5552     check_as as_func ".func test
5553                       .endfunc"
5554 fi
5555
5556 check_inline_asm inline_asm_labels '"1:\n"'
5557
5558 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5559
5560 if enabled aarch64; then
5561     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5562     # internal assembler in clang 3.3 does not support this instruction
5563     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5564     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5565
5566     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5567
5568 elif enabled alpha; then
5569
5570     check_cflags -mieee
5571
5572 elif enabled arm; then
5573
5574     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5575     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5576 float func(float a, float b){ return a+b; }
5577 EOF
5578     enabled thumb && check_cflags -mthumb || check_cflags -marm
5579
5580     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5581         :
5582     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5583         :
5584     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5585         case "${cross_prefix:-$cc}" in
5586             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5587             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5588 __asm__ (".eabi_attribute 28, 1");
5589 int main(void) { return 0; }
5590 EOF
5591         esac
5592         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5593     fi
5594
5595     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5596     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5597     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5598     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5599     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5600     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5601     enabled setend  && check_insn setend  'setend be'
5602
5603     [ $target_os = linux ] || [ $target_os = android ] ||
5604         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5605             $ARCH_EXT_LIST_ARM
5606
5607     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5608
5609     check_as as_arch_directive ".arch armv7-a"
5610     check_as as_dn_directive   "ra .dn d0.i16"
5611     check_as as_fpu_directive  ".fpu neon"
5612
5613     # llvm's integrated assembler supports .object_arch from llvm 3.5
5614     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5615         check_as as_object_arch ".object_arch armv4"
5616
5617     # MS armasm fails to assemble our PIC constructs
5618     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5619
5620 elif enabled mips; then
5621
5622     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5623     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5624     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5625
5626     # Enable minimum ISA based on selected options
5627     if enabled mips64; then
5628         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5629         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5630         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5631     else
5632         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5633         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5634         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5635         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5636     fi
5637
5638     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5639     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5640     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5641     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5642     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5643
5644     if enabled bigendian && enabled msa; then
5645         disable msa
5646     fi
5647
5648 elif enabled parisc; then
5649
5650     if enabled gcc; then
5651         case $($cc -dumpversion) in
5652             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5653         esac
5654     fi
5655
5656 elif enabled ppc; then
5657
5658     enable local_aligned
5659
5660     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5661     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5662     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5663     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5664
5665     if enabled altivec; then
5666         check_cflags -maltivec -mabi=altivec
5667
5668         # check if our compiler supports Motorola AltiVec C API
5669         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5670                                     vector signed int v2 = (vector signed int) { 1 };
5671                                     v1 = vec_add(v1, v2);"
5672
5673         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5674     fi
5675
5676     if enabled vsx; then
5677         check_cflags -mvsx &&
5678         check_cc vsx altivec.h "int v[4] = { 0 };
5679                                 vector signed int v1 = vec_vsx_ld(0, v);"
5680     fi
5681
5682     if enabled power8; then
5683         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5684     fi
5685
5686 elif enabled x86; then
5687
5688     check_builtin rdtsc    intrin.h   "__rdtsc()"
5689     check_builtin mm_empty mmintrin.h "_mm_empty()"
5690
5691     enable local_aligned
5692
5693     # check whether EBP is available on x86
5694     # As 'i' is stored on the stack, this program will crash
5695     # if the base pointer is used to access it because the
5696     # base pointer is cleared in the inline assembly code.
5697     check_exec_crash <<EOF && enable ebp_available
5698 volatile int i=0;
5699 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5700 return i;
5701 EOF
5702
5703     # check whether EBX is available on x86
5704     check_inline_asm ebx_available '""::"b"(0)' &&
5705         check_inline_asm ebx_available '"":::"%ebx"'
5706
5707     # check whether xmm clobbers are supported
5708     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5709
5710     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5711         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5712
5713     # check whether binutils is new enough to compile SSSE3/MMXEXT
5714     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5715     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5716
5717     probe_x86asm(){
5718         x86asmexe_probe=$1
5719         if test_cmd $x86asmexe_probe -v; then
5720             x86asmexe=$x86asmexe_probe
5721             x86asm_type=nasm
5722             x86asm_debug="-g -F dwarf"
5723             X86ASMDEP=
5724             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5725         elif test_cmd $x86asmexe_probe --version; then
5726             x86asmexe=$x86asmexe_probe
5727             x86asm_type=yasm
5728             x86asm_debug="-g dwarf2"
5729             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5730             X86ASM_DEPFLAGS=
5731         fi
5732         check_x86asm x86asm "movbe ecx, [5]"
5733     }
5734
5735     if ! disabled_any asm mmx x86asm; then
5736         disable x86asm
5737         for program in $x86asmexe nasm yasm; do
5738             probe_x86asm $program && break
5739         done
5740         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5741         X86ASMFLAGS="-f $objformat"
5742         enabled pic               && append X86ASMFLAGS "-DPIC"
5743         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5744         case "$objformat" in
5745             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5746         esac
5747
5748         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5749         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5750         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5751         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5752         check_x86asm cpunop          "CPU amdnop"
5753     fi
5754
5755     case "$cpu" in
5756         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5757             disable fast_clz
5758         ;;
5759     esac
5760
5761 fi
5762
5763 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5764
5765 check_ldflags -Wl,--as-needed
5766 check_ldflags -Wl,-z,noexecstack
5767
5768 if ! disabled network; then
5769     check_func getaddrinfo $network_extralibs
5770     check_func inet_aton $network_extralibs
5771
5772     check_type netdb.h "struct addrinfo"
5773     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5774     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5775     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5776     check_type poll.h "struct pollfd"
5777     check_type netinet/sctp.h "struct sctp_event_subscribe"
5778     check_struct "sys/socket.h" "struct msghdr" msg_flags
5779     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5780     check_type netinet/in.h "struct sockaddr_in6"
5781     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5782     check_type "sys/types.h sys/socket.h" socklen_t
5783
5784     # Prefer arpa/inet.h over winsock2
5785     if check_header arpa/inet.h ; then
5786         check_func closesocket
5787     elif check_header winsock2.h ; then
5788         check_func_headers winsock2.h closesocket -lws2 &&
5789             network_extralibs="-lws2" ||
5790         { check_func_headers winsock2.h closesocket -lws2_32 &&
5791             network_extralibs="-lws2_32"; } || disable winsock2_h network
5792         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5793
5794         check_type ws2tcpip.h socklen_t
5795         check_type ws2tcpip.h "struct addrinfo"
5796         check_type ws2tcpip.h "struct group_source_req"
5797         check_type ws2tcpip.h "struct ip_mreq_source"
5798         check_type ws2tcpip.h "struct ipv6_mreq"
5799         check_type winsock2.h "struct pollfd"
5800         check_struct winsock2.h "struct sockaddr" sa_len
5801         check_type ws2tcpip.h "struct sockaddr_in6"
5802         check_type ws2tcpip.h "struct sockaddr_storage"
5803     else
5804         disable network
5805     fi
5806 fi
5807
5808 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5809 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5810 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5811 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5812 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5813 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5814 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5815
5816 case "$custom_allocator" in
5817     jemalloc)
5818         # jemalloc by default does not use a prefix
5819         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5820     ;;
5821     tcmalloc)
5822         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5823         malloc_prefix=tc_
5824     ;;
5825 esac
5826
5827 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5828 check_func  ${malloc_prefix}memalign            && enable memalign
5829 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5830
5831 check_func  access
5832 check_func_headers stdlib.h arc4random
5833 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5834 check_func  fcntl
5835 check_func  fork
5836 check_func  gethrtime
5837 check_func  getopt
5838 check_func  getrusage
5839 check_func  gettimeofday
5840 check_func  isatty
5841 check_func  mkstemp
5842 check_func  mmap
5843 check_func  mprotect
5844 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5845 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5846 check_func  sched_getaffinity
5847 check_func  setrlimit
5848 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5849 check_func  strerror_r
5850 check_func  sysconf
5851 check_func  sysctl
5852 check_func  usleep
5853
5854 check_func_headers conio.h kbhit
5855 check_func_headers io.h setmode
5856 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5857 check_func_headers mach/mach_time.h mach_absolute_time
5858 check_func_headers stdlib.h getenv
5859 check_func_headers sys/stat.h lstat
5860
5861 check_func_headers windows.h GetProcessAffinityMask
5862 check_func_headers windows.h GetProcessTimes
5863 check_func_headers windows.h GetSystemTimeAsFileTime
5864 check_func_headers windows.h LoadLibrary
5865 check_func_headers windows.h MapViewOfFile
5866 check_func_headers windows.h PeekNamedPipe
5867 check_func_headers windows.h SetConsoleTextAttribute
5868 check_func_headers windows.h SetConsoleCtrlHandler
5869 check_func_headers windows.h Sleep
5870 check_func_headers windows.h VirtualAlloc
5871 check_func_headers glob.h glob
5872 enabled xlib &&
5873     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5874
5875 check_header direct.h
5876 check_header dirent.h
5877 check_header dxgidebug.h
5878 check_header dxva.h
5879 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5880 check_header io.h
5881 check_header linux/perf_event.h
5882 check_header libcrystalhd/libcrystalhd_if.h
5883 check_header malloc.h
5884 check_header net/udplite.h
5885 check_header poll.h
5886 check_header sys/param.h
5887 check_header sys/resource.h
5888 check_header sys/select.h
5889 check_header sys/time.h
5890 check_header sys/un.h
5891 check_header termios.h
5892 check_header unistd.h
5893 check_header valgrind/valgrind.h
5894 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5895 check_header windows.h
5896 check_header X11/extensions/XvMClib.h
5897 check_header asm/types.h
5898
5899 # it seems there are versions of clang in some distros that try to use the
5900 # gcc headers, which explodes for stdatomic
5901 # so we also check that atomics actually work here
5902 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5903
5904 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5905 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5906     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5907 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5908 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5909 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5910
5911 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5912 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5913 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5914
5915 enabled appkit       && check_apple_framework AppKit
5916 enabled audiotoolbox && check_apple_framework AudioToolbox
5917 enabled avfoundation && check_apple_framework AVFoundation
5918 enabled coreimage    && check_apple_framework CoreImage
5919 enabled videotoolbox && check_apple_framework VideoToolbox
5920
5921 check_apple_framework CoreFoundation
5922 check_apple_framework CoreMedia
5923 check_apple_framework CoreVideo
5924
5925 enabled avfoundation && {
5926     disable coregraphics applicationservices
5927     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5928     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5929
5930 enabled videotoolbox && {
5931     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5932     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5933 }
5934
5935 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5936
5937 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5938 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5939 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5940 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5941 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5942
5943 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5944 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5945 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5946 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5947 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5948 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5949 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5950 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5951 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5952 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5953
5954 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5955
5956 if ! disabled ffnvcodec; then
5957     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5958           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5959       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5960           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5961 fi
5962
5963 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5964
5965 if ! disabled w32threads && ! enabled pthreads; then
5966     check_func_headers "windows.h process.h" _beginthreadex &&
5967         check_type "windows.h" CONDITION_VARIABLE &&
5968         check_type "windows.h" INIT_ONCE &&
5969         enable w32threads || disable w32threads
5970     if ! enabled w32threads && enabled winrt; then
5971         check_func_headers "windows.h" CreateThread &&
5972             enable w32threads || disable w32threads
5973     fi
5974 fi
5975
5976 # check for some common methods of building with pthread support
5977 # do this before the optional library checks as some of them require pthreads
5978 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5979     if check_lib pthreads pthread.h pthread_join   -pthread &&
5980        check_lib pthreads pthread.h pthread_create -pthread; then
5981         add_cflags -pthread
5982     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5983          check_lib pthreads pthread.h pthread_create -pthreads; then
5984         add_cflags -pthreads
5985     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5986          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5987         add_cflags -ldl -pthread
5988     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5989          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5990         :
5991     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5992          check_lib pthreads pthread.h pthread_create -lpthread; then
5993         :
5994     elif check_func pthread_join && check_func pthread_create; then
5995         enable pthreads
5996     fi
5997     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5998
5999     if enabled pthreads; then
6000         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6001         check_func pthread_cancel $pthreads_extralibs
6002     fi
6003 fi
6004
6005 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6006                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6007 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6008 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6009
6010 # On some systems dynamic loading requires no extra linker flags
6011 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6012
6013 check_lib libm math.h sin -lm
6014
6015 atan2f_args=2
6016 copysign_args=2
6017 hypot_args=2
6018 ldexpf_args=2
6019 powf_args=2
6020
6021 for func in $MATH_FUNCS; do
6022     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6023 done
6024
6025 for func in $COMPLEX_FUNCS; do
6026     eval check_complexfunc $func \${${func}_args:-1}
6027 done
6028
6029 # these are off by default, so fail if requested and not available
6030 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6031 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6032 enabled decklink          && { require_header DeckLinkAPI.h &&
6033                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
6034 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
6035 enabled frei0r            && require_header frei0r.h
6036 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6037 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6038 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
6039 enabled ladspa            && require_header ladspa.h
6040 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6041 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6042 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6043 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6044 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6045 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6046 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6047                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6048                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6049 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6050 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6051 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.5.115" davs2.h davs2_decoder_open
6052 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6053 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6054 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6055                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6056                                  warn "using libfdk without pkg-config"; } }
6057 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"
6058 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6059 enabled fontconfig        && enable libfontconfig
6060 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6061 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6062 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6063 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6064                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6065 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6066                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6067                                done || die "ERROR: libgsm not found"; }
6068 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6069 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6070 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6071 # While it may appear that require is being used as a pkg-config
6072 # fallback for libmfx, it is actually being used to detect a different
6073 # installation route altogether.  If libmfx is installed via the Intel
6074 # Media SDK or Intel Media Server Studio, these don't come with
6075 # pkg-config support.  Instead, users should make sure that the build
6076 # can find the libraries and headers through other means.
6077 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6078                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6079 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6080 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6081 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6082                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6083 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6084                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6085                                die "ERROR: libnpp not found"; }
6086 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6087 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6088 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6089                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6090                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6091                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6092 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6093 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6094                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6095 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6096 enabled libopus           && {
6097     enabled libopus_decoder && {
6098         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6099     }
6100     enabled libopus_encoder && {
6101         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6102     }
6103 }
6104 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6105 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6106 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6107 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6108 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6109 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6110                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6111 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6112 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6113 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6114 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6115 enabled libsrt            && require_pkg_config libsrt "srt >= 1.2.0" srt/srt.h srt_socket
6116 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6117 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6118 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6119 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6120 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6121                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6122                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6123 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6124 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6125 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6126 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6127 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6128                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6129
6130 enabled libvpx            && {
6131     enabled libvpx_vp8_decoder && {
6132         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6133             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6134                 die "ERROR: libvpx decoder version must be >=1.4.0";
6135     }
6136     enabled libvpx_vp8_encoder && {
6137         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6138             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6139                 die "ERROR: libvpx encoder version must be >=1.4.0";
6140     }
6141     enabled libvpx_vp9_decoder && {
6142         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6143             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6144     }
6145     enabled libvpx_vp9_encoder && {
6146         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6147             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6148     }
6149     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6150         die "libvpx enabled but no supported decoders found"
6151     fi
6152 }
6153
6154 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6155 enabled libwebp           && {
6156     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6157     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6158 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6159                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6160                                  warn "using libx264 without pkg-config"; } } &&
6161                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6162                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6163 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6164                              require_cpp_condition x265.h "X265_BUILD >= 68"
6165 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6166 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6167 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6168 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6169 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6170                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6171                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6172 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6173 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6174                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6175                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6176                                die "ERROR: mbedTLS not found"; }
6177 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6178 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6179                                { ! enabled cross_compile &&
6180                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6181                                  add_ldflags -L/opt/vc/lib/ &&
6182                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6183                                die "ERROR: mmal not found" &&
6184                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6185 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6186                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6187                                die "ERROR: openal not found"; } &&
6188                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6189                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6190 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6191                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6192                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6193                                die "ERROR: opencl not found"; } &&
6194                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6195                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6196                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6197 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6198                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6199                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6200                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6201                                die "ERROR: opengl not found."
6202                              }
6203 enabled omx               && require_header OMX_Core.h
6204 enabled omx_rpi           && { check_header OMX_Core.h ||
6205                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6206                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6207 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6208                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6209                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6210                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6211                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6212                                die "ERROR: openssl not found"; }
6213 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6214                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6215                                { enabled libdrm ||
6216                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6217                              }
6218 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6219
6220
6221 if enabled gcrypt; then
6222     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6223     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6224         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6225         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6226         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6227             die "ERROR: gcrypt not found"
6228         add_cflags $gcrypt_cflags
6229     else
6230         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6231     fi
6232 fi
6233
6234 if enabled sdl2; then
6235     SDL2_CONFIG="${cross_prefix}sdl2-config"
6236     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6237     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6238         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6239         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6240         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6241         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6242         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6243             enable sdl2
6244     fi
6245     if test $target_os = "mingw32"; then
6246         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6247     fi
6248 fi
6249
6250 if enabled decklink; then
6251     case $target_os in
6252         mingw32*|mingw64*|win32|win64)
6253             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6254             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6255             ;;
6256     esac
6257 fi
6258
6259 enabled securetransport &&
6260     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6261     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6262         disable securetransport
6263
6264 enabled securetransport &&
6265     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6266
6267 enabled schannel &&
6268     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6269     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6270     schannel_extralibs="-lsecur32" ||
6271         disable schannel
6272
6273 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6274 enabled makeinfo \
6275     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6276     && enable makeinfo_html || disable makeinfo_html
6277 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6278 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6279 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6280 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6281
6282 # check V4L2 codecs available in the API
6283 check_header linux/fb.h
6284 check_header linux/videodev2.h
6285 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6286 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6287 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6288 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6289 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6290 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6291 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6292 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6293 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6294 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6295 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6296
6297 check_header sys/videoio.h
6298 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6299
6300 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6301 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6302 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6303 # w32api 3.12 had it defined wrong
6304 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6305
6306 check_type "dshow.h" IBaseFilter
6307
6308 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6309 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6310     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6311     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6312     check_header "dev/ic/bt8xx.h"
6313
6314 if check_struct sys/soundcard.h audio_buf_info bytes; then
6315     enable_sanitized sys/soundcard.h
6316 else
6317     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6318     #include <sys/soundcard.h>
6319     audio_buf_info abc;
6320 EOF
6321 fi
6322
6323 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6324     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6325
6326 enabled libjack &&
6327     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6328
6329 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6330
6331 if enabled libcdio; then
6332     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6333     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6334     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6335     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6336     die "ERROR: No usable libcdio/cdparanoia found"
6337 fi
6338
6339 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6340     disable libxcb_shm libxcb_shape libxcb_xfixes
6341
6342 if enabled libxcb; then
6343     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6344     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6345     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6346 fi
6347
6348 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6349
6350 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6351 # the desktop api partition
6352 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6353 #ifdef WINAPI_FAMILY
6354 #include <winapifamily.h>
6355 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6356 #error desktop, not uwp
6357 #else
6358 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6359 #endif
6360 #else
6361 #error no family set
6362 #endif
6363 EOF
6364
6365 enabled vaapi &&
6366     check_lib vaapi va/va.h vaInitialize -lva
6367
6368 enabled vaapi &&
6369     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6370
6371 if enabled vaapi; then
6372     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6373     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6374 fi
6375
6376 enabled vaapi &&
6377     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6378
6379 if enabled_all opencl libdrm ; then
6380     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6381         enable opencl_drm_beignet
6382     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6383         enable opencl_drm_arm
6384 fi
6385
6386 if enabled_all opencl vaapi ; then
6387     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6388     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6389         enable opencl_vaapi_intel_media
6390 fi
6391
6392 if enabled_all opencl dxva2 ; then
6393     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6394         enable opencl_dxva2
6395 fi
6396
6397 if enabled_all opencl d3d11va ; then
6398     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6399         enable opencl_d3d11
6400 fi
6401
6402 enabled vdpau &&
6403     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6404
6405 enabled vdpau &&
6406     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6407
6408 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6409
6410 if enabled x86; then
6411     case $target_os in
6412         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6413             ;;
6414         *)
6415             disable ffnvcodec cuvid nvdec nvenc
6416             ;;
6417     esac
6418 else
6419     disable ffnvcodec cuvid nvdec nvenc
6420 fi
6421
6422 enabled ffnvcodec && enable cuda
6423
6424 enabled nvenc &&
6425     test_cc -I$source_path <<EOF || disable nvenc
6426 #include <ffnvcodec/nvEncodeAPI.h>
6427 NV_ENCODE_API_FUNCTION_LIST flist;
6428 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6429 int main(void) { return 0; }
6430 EOF
6431
6432 enabled amf &&
6433     check_cpp_condition amf "AMF/core/Version.h" \
6434         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6435
6436 # Funny iconv installations are not unusual, so check it after all flags have been set
6437 if enabled libc_iconv; then
6438     check_func_headers iconv.h iconv
6439 elif enabled iconv; then
6440     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6441 fi
6442
6443 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6444
6445 # add some useful compiler flags if supported
6446 check_cflags -Wdeclaration-after-statement
6447 check_cflags -Wall
6448 check_cflags -Wdisabled-optimization
6449 check_cflags -Wpointer-arith
6450 check_cflags -Wredundant-decls
6451 check_cflags -Wwrite-strings
6452 check_cflags -Wtype-limits
6453 check_cflags -Wundef
6454 check_cflags -Wmissing-prototypes
6455 check_cflags -Wno-pointer-to-int-cast
6456 check_cflags -Wstrict-prototypes
6457 check_cflags -Wempty-body
6458
6459 if enabled extra_warnings; then
6460     check_cflags -Wcast-qual
6461     check_cflags -Wextra
6462     check_cflags -Wpedantic
6463 fi
6464
6465 check_disable_warning(){
6466     warning_flag=-W${1#-Wno-}
6467     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6468 }
6469
6470 test_cflags -Werror=unused-command-line-argument &&
6471     append unknown_warning_flags "-Werror=unused-command-line-argument"
6472 test_cflags -Werror=unknown-warning-option &&
6473     append unknown_warning_flags "-Werror=unknown-warning-option"
6474
6475 check_disable_warning -Wno-parentheses
6476 check_disable_warning -Wno-switch
6477 check_disable_warning -Wno-format-zero-length
6478 check_disable_warning -Wno-pointer-sign
6479 check_disable_warning -Wno-unused-const-variable
6480 check_disable_warning -Wno-bool-operation
6481
6482 check_disable_warning_headers(){
6483     warning_flag=-W${1#-Wno-}
6484     test_cflags $warning_flag && add_cflags_headers $1
6485 }
6486
6487 check_disable_warning_headers -Wno-deprecated-declarations
6488 check_disable_warning_headers -Wno-unused-variable
6489
6490 test_cc <<EOF && enable blocks_extension
6491 void (^block)(void);
6492 EOF
6493
6494 # add some linker flags
6495 check_ldflags -Wl,--warn-common
6496 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6497 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6498 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6499
6500 # add some strip flags
6501 check_stripflags -x
6502
6503 enabled neon_clobber_test &&
6504     check_ldflags -Wl,--wrap,avcodec_open2              \
6505                   -Wl,--wrap,avcodec_decode_audio4      \
6506                   -Wl,--wrap,avcodec_decode_video2      \
6507                   -Wl,--wrap,avcodec_decode_subtitle2   \
6508                   -Wl,--wrap,avcodec_encode_audio2      \
6509                   -Wl,--wrap,avcodec_encode_video2      \
6510                   -Wl,--wrap,avcodec_encode_subtitle    \
6511                   -Wl,--wrap,avcodec_send_packet        \
6512                   -Wl,--wrap,avcodec_receive_packet     \
6513                   -Wl,--wrap,avcodec_send_frame         \
6514                   -Wl,--wrap,avcodec_receive_frame      \
6515                   -Wl,--wrap,swr_convert                \
6516                   -Wl,--wrap,avresample_convert ||
6517     disable neon_clobber_test
6518
6519 enabled xmm_clobber_test &&
6520     check_ldflags -Wl,--wrap,avcodec_open2              \
6521                   -Wl,--wrap,avcodec_decode_audio4      \
6522                   -Wl,--wrap,avcodec_decode_video2      \
6523                   -Wl,--wrap,avcodec_decode_subtitle2   \
6524                   -Wl,--wrap,avcodec_encode_audio2      \
6525                   -Wl,--wrap,avcodec_encode_video2      \
6526                   -Wl,--wrap,avcodec_encode_subtitle    \
6527                   -Wl,--wrap,avcodec_send_packet        \
6528                   -Wl,--wrap,avcodec_receive_packet     \
6529                   -Wl,--wrap,avcodec_send_frame         \
6530                   -Wl,--wrap,avcodec_receive_frame      \
6531                   -Wl,--wrap,swr_convert                \
6532                   -Wl,--wrap,avresample_convert         \
6533                   -Wl,--wrap,sws_scale ||
6534     disable xmm_clobber_test
6535
6536 check_ld "cc" proper_dce <<EOF
6537 extern const int array[512];
6538 static inline int func(void) { return array[0]; }
6539 int main(void) { return 0; }
6540 EOF
6541
6542 if enabled proper_dce; then
6543     echo "X { local: *; };" > $TMPV
6544     if test_ldflags -Wl,${version_script},$TMPV; then
6545         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6546         quotes='""'
6547         test_cc <<EOF && enable symver_asm_label
6548 void ff_foo(void) __asm__ ("av_foo@VERSION");
6549 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6550 EOF
6551         test_cc <<EOF && enable symver_gnu_asm
6552 __asm__(".symver ff_foo,av_foo@VERSION");
6553 void ff_foo(void) {}
6554 EOF
6555     fi
6556 fi
6557
6558 if [ -z "$optflags" ]; then
6559     if enabled small; then
6560         optflags=$cflags_size
6561     elif enabled optimizations; then
6562         optflags=$cflags_speed
6563     else
6564         optflags=$cflags_noopt
6565     fi
6566 fi
6567
6568 if [ -z "$nvccflags" ]; then
6569     nvccflags=$nvccflags_default
6570 fi
6571
6572 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6573     nvccflags="$nvccflags -m64"
6574 else
6575     nvccflags="$nvccflags -m32"
6576 fi
6577
6578 check_optflags(){
6579     check_cflags "$@"
6580     enabled lto && check_ldflags "$@"
6581 }
6582
6583 check_optflags $optflags
6584 check_optflags -fno-math-errno
6585 check_optflags -fno-signed-zeros
6586
6587 if enabled lto; then
6588     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6589     check_cflags  -flto
6590     check_ldflags -flto $cpuflags
6591     disable inline_asm_direct_symbol_refs
6592 fi
6593
6594 enabled ftrapv && check_cflags -ftrapv
6595
6596 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6597 int x;
6598 EOF
6599
6600
6601 if enabled icc; then
6602     # Just warnings, no remarks
6603     check_cflags -w1
6604     # -wd: Disable following warnings
6605     # 144, 167, 556: -Wno-pointer-sign
6606     # 188: enumerated type mixed with another type
6607     # 1292: attribute "foo" ignored
6608     # 1419: external declaration in primary source file
6609     # 10006: ignoring unknown option -fno-signed-zeros
6610     # 10148: ignoring unknown option -Wno-parentheses
6611     # 10156: ignoring option '-W'; no argument required
6612     # 13200: No EMMS instruction before call to function
6613     # 13203: No EMMS instruction before return from function
6614     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6615     # 11030: Warning unknown option --as-needed
6616     # 10156: ignoring option '-export'; no argument required
6617     check_ldflags -wd10156,11030
6618     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6619     enable ebp_available
6620     # The test above does not test linking
6621     enabled lto && disable symver_asm_label
6622     if enabled x86_32; then
6623         icc_version=$($cc -dumpversion)
6624         test ${icc_version%%.*} -ge 11 &&
6625             check_cflags -falign-stack=maintain-16-byte ||
6626             disable aligned_stack
6627     fi
6628 elif enabled gcc; then
6629     check_optflags -fno-tree-vectorize
6630     check_cflags -Werror=format-security
6631     check_cflags -Werror=implicit-function-declaration
6632     check_cflags -Werror=missing-prototypes
6633     check_cflags -Werror=return-type
6634     check_cflags -Werror=vla
6635     check_cflags -Wformat
6636     check_cflags -fdiagnostics-color=auto
6637     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6638     if enabled x86_32; then
6639         case $target_os in
6640         *bsd*)
6641             # BSDs don't guarantee a 16 byte aligned stack, but we can
6642             # request GCC to try to maintain 16 byte alignment throughout
6643             # function calls. Library entry points that might call assembly
6644             # functions align the stack. (The parameter means 2^4 bytes.)
6645             check_cflags -mpreferred-stack-boundary=4
6646             ;;
6647         esac
6648     fi
6649 elif enabled llvm_gcc; then
6650     check_cflags -mllvm -stack-alignment=16
6651 elif enabled clang; then
6652     if enabled x86_32; then
6653         # Clang doesn't support maintaining alignment without assuming the
6654         # same alignment in every function. If 16 byte alignment would be
6655         # enabled, one would also have to either add attribute_align_arg on
6656         # every single entry point into the libraries or enable -mstackrealign
6657         # (doing stack realignment in every single function).
6658         case $target_os in
6659         mingw32|win32|*bsd*)
6660             disable aligned_stack
6661             ;;
6662         *)
6663             check_cflags -mllvm -stack-alignment=16
6664             check_cflags -mstack-alignment=16
6665             ;;
6666         esac
6667     else
6668         check_cflags -mllvm -stack-alignment=16
6669         check_cflags -mstack-alignment=16
6670     fi
6671     check_cflags -Qunused-arguments
6672     check_cflags -Werror=implicit-function-declaration
6673     check_cflags -Werror=missing-prototypes
6674     check_cflags -Werror=return-type
6675 elif enabled cparser; then
6676     add_cflags -Wno-missing-variable-declarations
6677     add_cflags -Wno-empty-statement
6678 elif enabled armcc; then
6679     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6680     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6681     # 2523: use of inline assembly is deprecated
6682     add_cflags -W${armcc_opt},--diag_suppress=2523
6683     add_cflags -W${armcc_opt},--diag_suppress=1207
6684     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6685     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6686     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6687     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6688 elif enabled pathscale; then
6689     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6690     disable inline_asm
6691 elif enabled_any msvc icl; then
6692     enabled x86_32 && disable aligned_stack
6693     enabled_all x86_32 debug && add_cflags -Oy-
6694     enabled debug && add_ldflags -debug
6695     enable pragma_deprecated
6696     if enabled icl; then
6697         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6698         # (correctly) on icl 13.x.
6699         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6700             add_cflags -Qansi-alias
6701         # Some inline asm is not compilable in debug
6702         if enabled debug; then
6703             disable ebp_available
6704             disable ebx_available
6705         fi
6706     fi
6707     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6708     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6709     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6710     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6711     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6712     # MSVC 2013 and newer can handle it fine.
6713     # If this declspec fails, force including stdlib.h before the restrict redefinition
6714     # happens in config.h.
6715     if [ $restrict_keyword != restrict ]; then
6716         test_cc <<EOF || add_cflags -FIstdlib.h
6717 __declspec($restrict_keyword) void *foo(int);
6718 EOF
6719     fi
6720     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6721     # Issue has been fixed in MSVC v19.00.24218.
6722     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6723         check_cflags -d2SSAOptimizer-
6724     # enable utf-8 source processing on VS2015 U2 and newer
6725     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6726         add_cflags -utf-8
6727 fi
6728
6729 for pfx in "" host_; do
6730     varname=${pfx%_}cc_type
6731     eval "type=\$$varname"
6732     if [ "$type" = "msvc" ]; then
6733         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6734 static inline int foo(int a) { return a; }
6735 EOF
6736     fi
6737 done
6738
6739 case $as_type in
6740     clang)
6741         add_asflags -Qunused-arguments
6742     ;;
6743 esac
6744
6745 case $ld_type in
6746     clang)
6747         check_ldflags -Qunused-arguments
6748     ;;
6749 esac
6750
6751 enable frame_thread_encoder
6752
6753 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6754
6755 check_deps $CONFIG_LIST       \
6756            $CONFIG_EXTRA      \
6757            $HAVE_LIST         \
6758            $ALL_COMPONENTS    \
6759
6760 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"
6761 enabled avresample && warn "Building with deprecated library libavresample"
6762
6763 if test $target_os = "haiku"; then
6764     disable memalign
6765     disable posix_memalign
6766 fi
6767
6768 flatten_extralibs(){
6769     nested_entries=
6770     list_name=$1
6771     eval list=\$${1}
6772     for entry in $list; do
6773         entry_copy=$entry
6774         resolve entry_copy
6775         flat_entries=
6776         for e in $entry_copy; do
6777             case $e in
6778                 *_extralibs) nested_entries="$nested_entries$e ";;
6779                           *) flat_entries="$flat_entries$e ";;
6780             esac
6781         done
6782         eval $entry="\$flat_entries"
6783     done
6784     append $list_name "$nested_entries"
6785
6786     resolve nested_entries
6787     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6788         flatten_extralibs $list_name
6789     fi
6790 }
6791
6792 flatten_extralibs_wrapper(){
6793     list_name=$1
6794     flatten_extralibs $list_name
6795     unique $list_name
6796     resolve $list_name
6797     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6798     eval printf \''%s'\' \""\$$list_name"\"
6799 }
6800
6801 for linkunit in $LIBRARY_LIST; do
6802     unset current_extralibs
6803     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6804     for comp in ${components}; do
6805         enabled $comp || continue
6806         comp_extralibs="${comp}_extralibs"
6807         append current_extralibs $comp_extralibs
6808     done
6809     eval prepend ${linkunit}_extralibs $current_extralibs
6810 done
6811
6812 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6813     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6814 done
6815
6816 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6817
6818 for thread in $THREADS_LIST; do
6819     if enabled $thread; then
6820         test -n "$thread_type" &&
6821             die "ERROR: Only one thread type must be selected." ||
6822             thread_type="$thread"
6823     fi
6824 done
6825
6826 if disabled stdatomic; then
6827     if enabled atomics_gcc; then
6828         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6829     elif enabled atomics_win32; then
6830         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6831     elif enabled atomics_suncc; then
6832         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6833     elif enabled pthreads; then
6834         add_compat atomics/pthread/stdatomic.o
6835         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6836     else
6837         enabled threads && die "Threading is enabled, but no atomics are available"
6838         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6839     fi
6840 fi
6841
6842 # Check if requested libraries were found.
6843 for lib in $AUTODETECT_LIBS; do
6844     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6845 done
6846
6847 enabled zlib && add_cppflags -DZLIB_CONST
6848
6849 # conditional library dependencies, in linking order
6850 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6851 enabled afir_filter         && prepend avfilter_deps "avcodec"
6852 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6853 enabled aresample_filter    && prepend avfilter_deps "swresample"
6854 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6855 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6856 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6857 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6858 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6859 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6860 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6861 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6862 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6863 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6864 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6865 enabled pan_filter          && prepend avfilter_deps "swresample"
6866 enabled pp_filter           && prepend avfilter_deps "postproc"
6867 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6868 enabled resample_filter && prepend avfilter_deps "avresample"
6869 enabled sab_filter          && prepend avfilter_deps "swscale"
6870 enabled scale_filter    && prepend avfilter_deps "swscale"
6871 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6872 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6873 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6874 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6875 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6876 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6877 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6878 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6879 enabled spp_filter          && prepend avfilter_deps "avcodec"
6880 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6881 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6882 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6883 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6884
6885 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6886
6887 #FIXME
6888 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6889
6890 enabled opus_decoder    && prepend avcodec_deps "swresample"
6891
6892 expand_deps(){
6893     lib_deps=${1}_deps
6894     eval "deps=\$$lib_deps"
6895     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6896     unique $lib_deps
6897 }
6898
6899 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6900 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6901
6902 map 'expand_deps $v' $LIBRARY_LIST
6903
6904 if test "$quiet" != "yes"; then
6905
6906 echo "install prefix            $prefix"
6907 echo "source path               $source_path"
6908 echo "C compiler                $cc"
6909 echo "C library                 $libc_type"
6910 if test "$host_cc" != "$cc"; then
6911     echo "host C compiler           $host_cc"
6912     echo "host C library            $host_libc_type"
6913 fi
6914 echo "ARCH                      $arch ($cpu)"
6915 if test "$build_suffix" != ""; then
6916     echo "build suffix              $build_suffix"
6917 fi
6918 if test "$progs_suffix" != ""; then
6919     echo "progs suffix              $progs_suffix"
6920 fi
6921 if test "$extra_version" != ""; then
6922     echo "version string suffix     $extra_version"
6923 fi
6924 echo "big-endian                ${bigendian-no}"
6925 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6926 if enabled x86; then
6927     echo "standalone assembly       ${x86asm-no}"
6928     echo "x86 assembler             ${x86asmexe}"
6929     echo "MMX enabled               ${mmx-no}"
6930     echo "MMXEXT enabled            ${mmxext-no}"
6931     echo "3DNow! enabled            ${amd3dnow-no}"
6932     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6933     echo "SSE enabled               ${sse-no}"
6934     echo "SSSE3 enabled             ${ssse3-no}"
6935     echo "AESNI enabled             ${aesni-no}"
6936     echo "AVX enabled               ${avx-no}"
6937     echo "AVX2 enabled              ${avx2-no}"
6938     echo "AVX-512 enabled           ${avx512-no}"
6939     echo "XOP enabled               ${xop-no}"
6940     echo "FMA3 enabled              ${fma3-no}"
6941     echo "FMA4 enabled              ${fma4-no}"
6942     echo "i686 features enabled     ${i686-no}"
6943     echo "CMOV is fast              ${fast_cmov-no}"
6944     echo "EBX available             ${ebx_available-no}"
6945     echo "EBP available             ${ebp_available-no}"
6946 fi
6947 if enabled aarch64; then
6948     echo "NEON enabled              ${neon-no}"
6949     echo "VFP enabled               ${vfp-no}"
6950 fi
6951 if enabled arm; then
6952     echo "ARMv5TE enabled           ${armv5te-no}"
6953     echo "ARMv6 enabled             ${armv6-no}"
6954     echo "ARMv6T2 enabled           ${armv6t2-no}"
6955     echo "VFP enabled               ${vfp-no}"
6956     echo "NEON enabled              ${neon-no}"
6957     echo "THUMB enabled             ${thumb-no}"
6958 fi
6959 if enabled mips; then
6960     echo "MIPS FPU enabled          ${mipsfpu-no}"
6961     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6962     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6963     echo "MIPS MSA enabled          ${msa-no}"
6964     echo "LOONGSON MMI enabled      ${mmi-no}"
6965 fi
6966 if enabled ppc; then
6967     echo "AltiVec enabled           ${altivec-no}"
6968     echo "VSX enabled               ${vsx-no}"
6969     echo "POWER8 enabled            ${power8-no}"
6970     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6971     echo "dcbzl available           ${dcbzl-no}"
6972 fi
6973 echo "debug symbols             ${debug-no}"
6974 echo "strip symbols             ${stripping-no}"
6975 echo "optimize for size         ${small-no}"
6976 echo "optimizations             ${optimizations-no}"
6977 echo "static                    ${static-no}"
6978 echo "shared                    ${shared-no}"
6979 echo "postprocessing support    ${postproc-no}"
6980 echo "network support           ${network-no}"
6981 echo "threading support         ${thread_type-no}"
6982 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6983 echo "texi2html enabled         ${texi2html-no}"
6984 echo "perl enabled              ${perl-no}"
6985 echo "pod2man enabled           ${pod2man-no}"
6986 echo "makeinfo enabled          ${makeinfo-no}"
6987 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6988 test -n "$random_seed" &&
6989     echo "random seed               ${random_seed}"
6990 echo
6991
6992 echo "External libraries:"
6993 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6994 echo
6995
6996 echo "External libraries providing hardware acceleration:"
6997 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6998 echo
6999
7000 echo "Libraries:"
7001 print_enabled '' $LIBRARY_LIST | print_in_columns
7002 echo
7003
7004 echo "Programs:"
7005 print_enabled '' $PROGRAM_LIST | print_in_columns
7006 echo
7007
7008 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7009     echo "Enabled ${type}s:"
7010     eval list=\$$(toupper $type)_LIST
7011     print_enabled '_*' $list | print_in_columns
7012     echo
7013 done
7014
7015 if test -n "$ignore_tests"; then
7016     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7017     echo "Ignored FATE tests:"
7018     echo $ignore_tests | print_in_columns
7019     echo
7020 fi
7021
7022 echo "License: $license"
7023
7024 fi # test "$quiet" != "yes"
7025
7026 if test -n "$WARNINGS"; then
7027     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7028     enabled fatal_warnings && exit 1
7029 fi
7030
7031 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7032
7033 esc(){
7034     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7035 }
7036
7037 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7038
7039 enabled stripping || strip="echo skipping strip"
7040 enabled stripping || striptype=""
7041
7042 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7043
7044 cat > ffbuild/config.mak <<EOF
7045 # Automatically generated by configure - do not modify!
7046 ifndef FFMPEG_CONFIG_MAK
7047 FFMPEG_CONFIG_MAK=1
7048 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7049 prefix=$prefix
7050 LIBDIR=\$(DESTDIR)$libdir
7051 SHLIBDIR=\$(DESTDIR)$shlibdir
7052 INCDIR=\$(DESTDIR)$incdir
7053 BINDIR=\$(DESTDIR)$bindir
7054 DATADIR=\$(DESTDIR)$datadir
7055 DOCDIR=\$(DESTDIR)$docdir
7056 MANDIR=\$(DESTDIR)$mandir
7057 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7058 INSTALL_NAME_DIR=$install_name_dir
7059 SRC_PATH=$source_path
7060 SRC_LINK=$source_link
7061 ifndef MAIN_MAKEFILE
7062 SRC_PATH:=\$(SRC_PATH:.%=..%)
7063 endif
7064 CC_IDENT=$cc_ident
7065 ARCH=$arch
7066 INTRINSICS=$intrinsics
7067 EXTERN_PREFIX=$extern_prefix
7068 CC=$cc
7069 CXX=$cxx
7070 AS=$as
7071 OBJCC=$objcc
7072 LD=$ld
7073 DEPCC=$dep_cc
7074 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7075 DEPAS=$as
7076 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7077 X86ASM=$x86asmexe
7078 DEPX86ASM=$x86asmexe
7079 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7080 AR=$ar
7081 ARFLAGS=$arflags
7082 AR_O=$ar_o
7083 AR_CMD=$ar
7084 NM_CMD=$nm
7085 RANLIB=$ranlib
7086 STRIP=$strip
7087 STRIPTYPE=$striptype
7088 NVCC=$nvcc
7089 CP=cp -p
7090 LN_S=$ln_s
7091 CPPFLAGS=$CPPFLAGS
7092 CFLAGS=$CFLAGS
7093 CXXFLAGS=$CXXFLAGS
7094 OBJCFLAGS=$OBJCFLAGS
7095 ASFLAGS=$ASFLAGS
7096 NVCCFLAGS=$nvccflags
7097 AS_C=$AS_C
7098 AS_O=$AS_O
7099 OBJCC_C=$OBJCC_C
7100 OBJCC_E=$OBJCC_E
7101 OBJCC_O=$OBJCC_O
7102 CC_C=$CC_C
7103 CC_E=$CC_E
7104 CC_O=$CC_O
7105 CXX_C=$CXX_C
7106 CXX_O=$CXX_O
7107 NVCC_C=$NVCC_C
7108 NVCC_O=$NVCC_O
7109 LD_O=$LD_O
7110 X86ASM_O=$X86ASM_O
7111 LD_LIB=$LD_LIB
7112 LD_PATH=$LD_PATH
7113 DLLTOOL=$dlltool
7114 WINDRES=$windres
7115 DEPWINDRES=$dep_cc
7116 DOXYGEN=$doxygen
7117 LDFLAGS=$LDFLAGS
7118 LDEXEFLAGS=$LDEXEFLAGS
7119 LDSOFLAGS=$LDSOFLAGS
7120 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7121 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7122 X86ASMFLAGS=$X86ASMFLAGS
7123 BUILDSUF=$build_suffix
7124 PROGSSUF=$progs_suffix
7125 FULLNAME=$FULLNAME
7126 LIBPREF=$LIBPREF
7127 LIBSUF=$LIBSUF
7128 LIBNAME=$LIBNAME
7129 SLIBPREF=$SLIBPREF
7130 SLIBSUF=$SLIBSUF
7131 EXESUF=$EXESUF
7132 EXTRA_VERSION=$extra_version
7133 CCDEP=$CCDEP
7134 CXXDEP=$CXXDEP
7135 CCDEP_FLAGS=$CCDEP_FLAGS
7136 ASDEP=$ASDEP
7137 ASDEP_FLAGS=$ASDEP_FLAGS
7138 X86ASMDEP=$X86ASMDEP
7139 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7140 CC_DEPFLAGS=$CC_DEPFLAGS
7141 AS_DEPFLAGS=$AS_DEPFLAGS
7142 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7143 HOSTCC=$host_cc
7144 HOSTLD=$host_ld
7145 HOSTCFLAGS=$host_cflags
7146 HOSTCPPFLAGS=$host_cppflags
7147 HOSTEXESUF=$HOSTEXESUF
7148 HOSTLDFLAGS=$host_ldflags
7149 HOSTEXTRALIBS=$host_extralibs
7150 DEPHOSTCC=$host_cc
7151 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7152 HOSTCCDEP=$HOSTCCDEP
7153 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7154 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7155 HOSTCC_C=$HOSTCC_C
7156 HOSTCC_O=$HOSTCC_O
7157 HOSTLD_O=$HOSTLD_O
7158 TARGET_EXEC=$target_exec $target_exec_args
7159 TARGET_PATH=$target_path
7160 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7161 CFLAGS-ffplay=${sdl2_cflags}
7162 CFLAGS_HEADERS=$CFLAGS_HEADERS
7163 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7164 EXTRALIBS=$extralibs
7165 COMPAT_OBJS=$compat_objs
7166 INSTALL=$install
7167 LIBTARGET=${LIBTARGET}
7168 SLIBNAME=${SLIBNAME}
7169 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7170 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7171 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7172 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7173 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7174 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7175 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7176 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7177 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7178 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7179 NOREDZONE_FLAGS=$noredzone_flags
7180 LIBFUZZER_PATH=$libfuzzer_path
7181 IGNORE_TESTS=$ignore_tests
7182 EOF
7183
7184 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7185
7186 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7187     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7188 done
7189
7190 cat > $TMPH <<EOF
7191 /* Automatically generated by configure - do not modify! */
7192 #ifndef FFMPEG_CONFIG_H
7193 #define FFMPEG_CONFIG_H
7194 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7195 #define FFMPEG_LICENSE "$(c_escape $license)"
7196 #define CONFIG_THIS_YEAR 2018
7197 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7198 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7199 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7200 #define av_restrict $restrict_keyword
7201 #define EXTERN_PREFIX "${extern_prefix}"
7202 #define EXTERN_ASM ${extern_prefix}
7203 #define BUILDSUF "$build_suffix"
7204 #define SLIBSUF "$SLIBSUF"
7205 #define HAVE_MMX2 HAVE_MMXEXT
7206 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7207 EOF
7208
7209 test -n "$assert_level" &&
7210     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7211
7212 test -n "$malloc_prefix" &&
7213     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7214
7215 if enabled x86asm; then
7216     append config_files $TMPASM
7217     cat > $TMPASM <<EOF
7218 ; Automatically generated by configure - do not modify!
7219 EOF
7220 fi
7221
7222 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7223
7224
7225 mkdir -p doc
7226 mkdir -p tests
7227 mkdir -p tests/api
7228 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7229
7230 print_config ARCH_   "$config_files" $ARCH_LIST
7231 print_config HAVE_   "$config_files" $HAVE_LIST
7232 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7233                                      $CONFIG_EXTRA      \
7234                                      $ALL_COMPONENTS    \
7235
7236 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7237 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7238
7239 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7240 cp_if_changed $TMPH config.h
7241 touch ffbuild/.config
7242
7243 enabled x86asm && cp_if_changed $TMPASM config.asm
7244
7245 cat > $TMPH <<EOF
7246 /* Generated by ffmpeg configure */
7247 #ifndef AVUTIL_AVCONFIG_H
7248 #define AVUTIL_AVCONFIG_H
7249 EOF
7250
7251 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7252
7253 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7254
7255 cp_if_changed $TMPH libavutil/avconfig.h
7256
7257 # full_filter_name_foo=vf_foo
7258 # full_filter_name_bar=asrc_bar
7259 # ...
7260 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7261
7262 # generate the lists of enabled components
7263 print_enabled_components(){
7264     file=$1
7265     struct_name=$2
7266     name=$3
7267     shift 3
7268     echo "static const $struct_name * const $name[] = {" > $TMPH
7269     for c in $*; do
7270         if enabled $c; then
7271             case $name in
7272                 filter_list)
7273                     eval c=\$full_filter_name_${c%_filter}
7274                 ;;
7275                 indev_list)
7276                     c=${c%_indev}_demuxer
7277                 ;;
7278                 outdev_list)
7279                     c=${c%_outdev}_muxer
7280                 ;;
7281             esac
7282             printf "    &ff_%s,\n" $c >> $TMPH
7283         fi
7284     done
7285     if [ "$name" = "filter_list" ]; then
7286         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7287             printf "    &ff_%s,\n" $c >> $TMPH
7288         done
7289     fi
7290     echo "    NULL };" >> $TMPH
7291     cp_if_changed $TMPH $file
7292 }
7293
7294 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7295 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7296 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7297 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7298 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7299 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7300 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7301 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7302 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7303
7304 # Settings for pkg-config files
7305
7306 cat > $TMPH <<EOF
7307 # Automatically generated by configure - do not modify!
7308 shared=$shared
7309 build_suffix=$build_suffix
7310 prefix=$prefix
7311 libdir=$libdir
7312 incdir=$incdir
7313 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7314 source_path=${source_path}
7315 LIBPREF=${LIBPREF}
7316 LIBSUF=${LIBSUF}
7317 extralibs_avutil="$avutil_extralibs"
7318 extralibs_avcodec="$avcodec_extralibs"
7319 extralibs_avformat="$avformat_extralibs"
7320 extralibs_avdevice="$avdevice_extralibs"
7321 extralibs_avfilter="$avfilter_extralibs"
7322 extralibs_avresample="$avresample_extralibs"
7323 extralibs_postproc="$postproc_extralibs"
7324 extralibs_swscale="$swscale_extralibs"
7325 extralibs_swresample="$swresample_extralibs"
7326 EOF
7327
7328 for lib in $LIBRARY_LIST; do
7329     lib_deps="$(eval echo \$${lib}_deps)"
7330     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7331 done
7332
7333 cp_if_changed $TMPH ffbuild/config.sh