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 or libtls 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-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 261   --enable-libssh          enable SFTP protocol via libssh [no]
 262   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 263   --enable-libtheora       enable Theora encoding via libtheora [no]
 264   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 265                            if openssl or gnutls is not used [no]
 266   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 267   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 268   --enable-libvidstab      enable video stabilization using vid.stab [no]
 269   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 270   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 271   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 272                            native implementation exists [no]
 273   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 274   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 275   --enable-libwebp         enable WebP encoding via libwebp [no]
 276   --enable-libx264         enable H.264 encoding via x264 [no]
 277   --enable-libx265         enable HEVC encoding via x265 [no]
 278   --enable-libxavs         enable AVS encoding via xavs [no]
 279   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 280   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 281   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 282   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 283   --enable-libxvid         enable Xvid encoding via xvidcore,
 284                            native MPEG-4/Xvid encoder exists [no]
 285   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 286   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 287   --enable-libzmq          enable message passing via libzmq [no]
 288   --enable-libzvbi         enable teletext support via libzvbi [no]
 289   --enable-lv2             enable LV2 audio filtering [no]
 290   --disable-lzma           disable lzma [autodetect]
 291   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 292   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 293   --enable-mediacodec      enable Android MediaCodec support [no]
 294   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 295   --enable-openal          enable OpenAL 1.1 capture support [no]
 296   --enable-opencl          enable OpenCL processing [no]
 297   --enable-opengl          enable OpenGL rendering [no]
 298   --enable-openssl         enable openssl, needed for https support
 299                            if gnutls or libtls is not used [no]
 300   --disable-sndio          disable sndio support [autodetect]
 301   --disable-schannel       disable SChannel SSP, needed for TLS support on
 302                            Windows if openssl and gnutls are not used [autodetect]
 303   --disable-sdl2           disable sdl2 [autodetect]
 304   --disable-securetransport disable Secure Transport, needed for TLS support
 305                            on OSX if openssl and gnutls are not used [autodetect]
 306   --disable-xlib           disable xlib [autodetect]
 307   --disable-zlib           disable zlib [autodetect]
 308
 309   The following libraries provide various hardware acceleration features:
 310   --disable-amf            disable AMF video encoding code [autodetect]
 311   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 312   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 313   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 314   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 315   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 316   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 317   --enable-libdrm          enable DRM code (Linux) [no]
 318   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 319   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 320   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 321   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 322   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 323   --enable-omx             enable OpenMAX IL code [no]
 324   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 325   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 326   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 327   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 328   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 329   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 330
 331 Toolchain options:
 332   --arch=ARCH              select architecture [$arch]
 333   --cpu=CPU                select the minimum required CPU (affects
 334                            instruction selection, may crash on older CPUs)
 335   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 336   --progs-suffix=SUFFIX    program name suffix []
 337   --enable-cross-compile   assume a cross-compiler is used
 338   --sysroot=PATH           root of cross-build tree
 339   --sysinclude=PATH        location of cross-build system headers
 340   --target-os=OS           compiler targets OS [$target_os]
 341   --target-exec=CMD        command to run executables on target
 342   --target-path=DIR        path to view of build directory on target
 343   --target-samples=DIR     path to samples directory on target
 344   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 345   --toolchain=NAME         set tool defaults according to NAME
 346                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 347                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 348                            valgrind-massif, valgrind-memcheck,
 349                            msvc, icl, gcov, llvm-cov, hardened)
 350   --nm=NM                  use nm tool NM [$nm_default]
 351   --ar=AR                  use archive tool AR [$ar_default]
 352   --as=AS                  use assembler AS [$as_default]
 353   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 354   --strip=STRIP            use strip tool STRIP [$strip_default]
 355   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 356   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 357   --cc=CC                  use C compiler CC [$cc_default]
 358   --cxx=CXX                use C compiler CXX [$cxx_default]
 359   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 360   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 361   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 362   --ld=LD                  use linker LD [$ld_default]
 363   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 364   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 365   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 366   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 367   --host-cc=HOSTCC         use host C compiler HOSTCC
 368   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 369   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 370   --host-ld=HOSTLD         use host linker HOSTLD
 371   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 372   --host-libs=HLIBS        use libs HLIBS when linking for host
 373   --host-os=OS             compiler host OS [$target_os]
 374   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 375   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 376   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 377   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 378   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 379   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 380   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 381   --extra-version=STRING   version string suffix []
 382   --optflags=OPTFLAGS      override optimization-related compiler flags
 383   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 384   --build-suffix=SUFFIX    library name suffix []
 385   --enable-pic             build position-independent code
 386   --enable-thumb           compile for Thumb instruction set
 387   --enable-lto             use link-time optimization
 388   --env="ENV=override"     override the environment variables
 389
 390 Advanced options (experts only):
 391   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 392   --custom-allocator=NAME  use a supported custom allocator
 393   --disable-symver         disable symbol versioning
 394   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 395   --disable-safe-bitstream-reader
 396                            disable buffer boundary checking in bitreaders
 397                            (faster, but may crash)
 398   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 399
 400 Optimization options (experts only):
 401   --disable-asm            disable all assembly optimizations
 402   --disable-altivec        disable AltiVec optimizations
 403   --disable-vsx            disable VSX optimizations
 404   --disable-power8         disable POWER8 optimizations
 405   --disable-amd3dnow       disable 3DNow! optimizations
 406   --disable-amd3dnowext    disable 3DNow! extended optimizations
 407   --disable-mmx            disable MMX optimizations
 408   --disable-mmxext         disable MMXEXT optimizations
 409   --disable-sse            disable SSE optimizations
 410   --disable-sse2           disable SSE2 optimizations
 411   --disable-sse3           disable SSE3 optimizations
 412   --disable-ssse3          disable SSSE3 optimizations
 413   --disable-sse4           disable SSE4 optimizations
 414   --disable-sse42          disable SSE4.2 optimizations
 415   --disable-avx            disable AVX optimizations
 416   --disable-xop            disable XOP optimizations
 417   --disable-fma3           disable FMA3 optimizations
 418   --disable-fma4           disable FMA4 optimizations
 419   --disable-avx2           disable AVX2 optimizations
 420   --disable-avx512         disable AVX-512 optimizations
 421   --disable-aesni          disable AESNI optimizations
 422   --disable-armv5te        disable armv5te optimizations
 423   --disable-armv6          disable armv6 optimizations
 424   --disable-armv6t2        disable armv6t2 optimizations
 425   --disable-vfp            disable VFP optimizations
 426   --disable-neon           disable NEON optimizations
 427   --disable-inline-asm     disable use of inline assembly
 428   --disable-x86asm         disable use of standalone x86 assembly
 429   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 430   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 431   --disable-msa            disable MSA optimizations
 432   --disable-mipsfpu        disable floating point MIPS optimizations
 433   --disable-mmi            disable Loongson SIMD optimizations
 434   --disable-fast-unaligned consider unaligned accesses slow
 435
 436 Developer options (useful when working on FFmpeg itself):
 437   --disable-debug          disable debugging symbols
 438   --enable-debug=LEVEL     set the debug level [$debuglevel]
 439   --disable-optimizations  disable compiler optimizations
 440   --enable-extra-warnings  enable more compiler warnings
 441   --disable-stripping      disable stripping of executables and shared libraries
 442   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 443                            2 causes a slowdown at runtime.
 444   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 445   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 446                            leaks and errors, using the specified valgrind binary.
 447                            Cannot be combined with --target-exec
 448   --enable-ftrapv          Trap arithmetic overflows
 449   --samples=PATH           location of test samples for FATE, if not set use
 450                            \$FATE_SAMPLES at make invocation time.
 451   --enable-neon-clobber-test check NEON registers for clobbering (should be
 452                            used only for debugging purposes)
 453   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 454                            should be used only for debugging purposes)
 455   --enable-random          randomly enable/disable components
 456   --disable-random
 457   --enable-random=LIST     randomly enable/disable specific components or
 458   --disable-random=LIST    component groups. LIST is a comma-separated list
 459                            of NAME[:PROB] entries where NAME is a component
 460                            (group) and PROB the probability associated with
 461                            NAME (default 0.5).
 462   --random-seed=VALUE      seed value for --enable/disable-random
 463   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 464                            (only applies to --disable-optimizations builds)
 465   --enable-osfuzz          Enable building fuzzer tool
 466   --libfuzzer=PATH         path to libfuzzer
 467   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 468                            in the name) of tests whose result is ignored
 469   --enable-linux-perf      enable Linux Performance Monitor API
 470
 471 NOTE: Object files are built at the place where configure is launched.
 472 EOF
 473   exit 0
 474 }
 475
 476 if test -t 1 && which tput >/dev/null 2>&1; then
 477     ncolors=$(tput colors)
 478     if test -n "$ncolors" && test $ncolors -ge 8; then
 479         bold_color=$(tput bold)
 480         warn_color=$(tput setaf 3)
 481         error_color=$(tput setaf 1)
 482         reset_color=$(tput sgr0)
 483     fi
 484     # 72 used instead of 80 since that's the default of pr
 485     ncols=$(tput cols)
 486 fi
 487 : ${ncols:=72}
 488
 489 log(){
 490     echo "$@" >> $logfile
 491 }
 492
 493 log_file(){
 494     log BEGIN $1
 495     pr -n -t $1 >> $logfile
 496     log END $1
 497 }
 498
 499 warn(){
 500     log "WARNING: $*"
 501     WARNINGS="${WARNINGS}WARNING: $*\n"
 502 }
 503
 504 die(){
 505     log "$@"
 506     echo "$error_color$bold_color$@$reset_color"
 507     cat <<EOF
 508
 509 If you think configure made a mistake, make sure you are using the latest
 510 version from Git.  If the latest version fails, report the problem to the
 511 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 512 EOF
 513     if disabled logging; then
 514         cat <<EOF
 515 Rerun configure with logging enabled (do not use --disable-logging), and
 516 include the log this produces with your report.
 517 EOF
 518     else
 519         cat <<EOF
 520 Include the log file "$logfile" produced by configure as this will help
 521 solve the problem.
 522 EOF
 523     fi
 524     exit 1
 525 }
 526
 527 # Avoid locale weirdness, besides we really just want to translate ASCII.
 528 toupper(){
 529     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 530 }
 531
 532 tolower(){
 533     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 534 }
 535
 536 c_escape(){
 537     echo "$*" | sed 's/["\\]/\\\0/g'
 538 }
 539
 540 sh_quote(){
 541     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 542     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 543     echo "$v"
 544 }
 545
 546 cleanws(){
 547     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 548 }
 549
 550 filter(){
 551     pat=$1
 552     shift
 553     for v; do
 554         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 555     done
 556 }
 557
 558 filter_out(){
 559     pat=$1
 560     shift
 561     for v; do
 562         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 563     done
 564 }
 565
 566 map(){
 567     m=$1
 568     shift
 569     for v; do eval $m; done
 570 }
 571
 572 add_suffix(){
 573     suffix=$1
 574     shift
 575     for v; do echo ${v}${suffix}; done
 576 }
 577
 578 remove_suffix(){
 579     suffix=$1
 580     shift
 581     for v; do echo ${v%$suffix}; done
 582 }
 583
 584 set_all(){
 585     value=$1
 586     shift
 587     for var in $*; do
 588         eval $var=$value
 589     done
 590 }
 591
 592 set_weak(){
 593     value=$1
 594     shift
 595     for var; do
 596         eval : \${$var:=$value}
 597     done
 598 }
 599
 600 sanitize_var_name(){
 601     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 602 }
 603
 604 set_sanitized(){
 605     var=$1
 606     shift
 607     eval $(sanitize_var_name "$var")='$*'
 608 }
 609
 610 get_sanitized(){
 611     eval echo \$$(sanitize_var_name "$1")
 612 }
 613
 614 pushvar(){
 615     for pvar in $*; do
 616         eval level=\${${pvar}_level:=0}
 617         eval ${pvar}_${level}="\$$pvar"
 618         eval ${pvar}_level=$(($level+1))
 619     done
 620 }
 621
 622 popvar(){
 623     for pvar in $*; do
 624         eval level=\${${pvar}_level:-0}
 625         test $level = 0 && continue
 626         eval level=$(($level-1))
 627         eval $pvar="\${${pvar}_${level}}"
 628         eval ${pvar}_level=$level
 629         eval unset ${pvar}_${level}
 630     done
 631 }
 632
 633 request(){
 634     for var in $*; do
 635         eval ${var}_requested=yes
 636         eval $var=
 637     done
 638 }
 639
 640 enable(){
 641     set_all yes $*
 642 }
 643
 644 disable(){
 645     set_all no $*
 646 }
 647
 648 enable_weak(){
 649     set_weak yes $*
 650 }
 651
 652 disable_weak(){
 653     set_weak no $*
 654 }
 655
 656 enable_sanitized(){
 657     for var; do
 658         enable $(sanitize_var_name $var)
 659     done
 660 }
 661
 662 disable_sanitized(){
 663     for var; do
 664         disable $(sanitize_var_name $var)
 665     done
 666 }
 667
 668 do_enable_deep(){
 669     for var; do
 670         enabled $var && continue
 671         eval sel="\$${var}_select"
 672         eval sgs="\$${var}_suggest"
 673         pushvar var sgs
 674         enable_deep $sel
 675         popvar sgs
 676         enable_deep_weak $sgs
 677         popvar var
 678     done
 679 }
 680
 681 enable_deep(){
 682     do_enable_deep $*
 683     enable $*
 684 }
 685
 686 enable_deep_weak(){
 687     for var; do
 688         disabled $var && continue
 689         pushvar var
 690         do_enable_deep $var
 691         popvar var
 692         enable_weak $var
 693     done
 694 }
 695
 696 requested(){
 697     test "${1#!}" = "$1" && op="=" || op="!="
 698     eval test "x\$${1#!}_requested" $op "xyes"
 699 }
 700
 701 enabled(){
 702     test "${1#!}" = "$1" && op="=" || op="!="
 703     eval test "x\$${1#!}" $op "xyes"
 704 }
 705
 706 disabled(){
 707     test "${1#!}" = "$1" && op="=" || op="!="
 708     eval test "x\$${1#!}" $op "xno"
 709 }
 710
 711 enabled_all(){
 712     for opt; do
 713         enabled $opt || return 1
 714     done
 715 }
 716
 717 disabled_all(){
 718     for opt; do
 719         disabled $opt || return 1
 720     done
 721 }
 722
 723 enabled_any(){
 724     for opt; do
 725         enabled $opt && return 0
 726     done
 727 }
 728
 729 disabled_any(){
 730     for opt; do
 731         disabled $opt && return 0
 732     done
 733     return 1
 734 }
 735
 736 set_default(){
 737     for opt; do
 738         eval : \${$opt:=\$${opt}_default}
 739     done
 740 }
 741
 742 is_in(){
 743     value=$1
 744     shift
 745     for var in $*; do
 746         [ $var = $value ] && return 0
 747     done
 748     return 1
 749 }
 750
 751 check_deps(){
 752     for cfg; do
 753         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 754         disabled ${cfg}_checking && continue
 755         enable ${cfg}_checking
 756
 757         eval dep_all="\$${cfg}_deps"
 758         eval dep_any="\$${cfg}_deps_any"
 759         eval dep_con="\$${cfg}_conflict"
 760         eval dep_sel="\$${cfg}_select"
 761         eval dep_sgs="\$${cfg}_suggest"
 762         eval dep_ifa="\$${cfg}_if"
 763         eval dep_ifn="\$${cfg}_if_any"
 764
 765         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 766         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 767         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 768
 769         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 770         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 771         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 772         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 773         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 774         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 775
 776         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 777
 778         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 779             # filter out library deps, these do not belong in extralibs
 780             is_in $dep $LIBRARY_LIST && continue
 781             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 782         done
 783
 784         disable ${cfg}_checking
 785     done
 786 }
 787
 788 print_config(){
 789     pfx=$1
 790     files=$2
 791     shift 2
 792     map 'eval echo "$v \${$v:-no}"' "$@" |
 793     awk "BEGIN { split(\"$files\", files) }
 794         {
 795             c = \"$pfx\" toupper(\$1);
 796             v = \$2;
 797             sub(/yes/, 1, v);
 798             sub(/no/,  0, v);
 799             for (f in files) {
 800                 file = files[f];
 801                 if (file ~ /\\.h\$/) {
 802                     printf(\"#define %s %d\\n\", c, v) >>file;
 803                 } else if (file ~ /\\.asm\$/) {
 804                     printf(\"%%define %s %d\\n\", c, v) >>file;
 805                 } else if (file ~ /\\.mak\$/) {
 806                     n = -v ? \"\" : \"!\";
 807                     printf(\"%s%s=yes\\n\", n, c) >>file;
 808                 } else if (file ~ /\\.texi\$/) {
 809                     pre = -v ? \"\" : \"@c \";
 810                     yesno = \$2;
 811                     c2 = tolower(c);
 812                     gsub(/_/, \"-\", c2);
 813                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 814                 }
 815             }
 816         }"
 817 }
 818
 819 print_enabled(){
 820     suf=$1
 821     shift
 822     for v; do
 823         enabled $v && printf "%s\n" ${v%$suf}
 824     done
 825 }
 826
 827 append(){
 828     var=$1
 829     shift
 830     eval "$var=\"\$$var $*\""
 831 }
 832
 833 prepend(){
 834     var=$1
 835     shift
 836     eval "$var=\"$* \$$var\""
 837 }
 838
 839 unique(){
 840     var=$1
 841     uniq_list=""
 842     for tok in $(eval echo \$$var); do
 843         uniq_list="$(filter_out $tok $uniq_list) $tok"
 844     done
 845     eval "$var=\"${uniq_list}\""
 846 }
 847
 848 resolve(){
 849     var=$1
 850     tmpvar=
 851     for entry in $(eval echo \$$var); do
 852         tmpvar="$tmpvar $(eval echo \$${entry})"
 853     done
 854     eval "$var=\"${tmpvar}\""
 855 }
 856
 857 add_cppflags(){
 858     append CPPFLAGS "$@"
 859 }
 860
 861 add_cflags(){
 862     append CFLAGS $($cflags_filter "$@")
 863 }
 864
 865 add_cflags_headers(){
 866     append CFLAGS_HEADERS $($cflags_filter "$@")
 867 }
 868
 869 add_cxxflags(){
 870     append CXXFLAGS $($cflags_filter "$@")
 871 }
 872
 873 add_asflags(){
 874     append ASFLAGS $($asflags_filter "$@")
 875 }
 876
 877 add_objcflags(){
 878     append OBJCFLAGS $($objcflags_filter "$@")
 879 }
 880
 881 add_ldflags(){
 882     append LDFLAGS $($ldflags_filter "$@")
 883 }
 884
 885 add_ldexeflags(){
 886     append LDEXEFLAGS $($ldflags_filter "$@")
 887 }
 888
 889 add_ldsoflags(){
 890     append LDSOFLAGS $($ldflags_filter "$@")
 891 }
 892
 893 add_stripflags(){
 894     append ASMSTRIPFLAGS "$@"
 895 }
 896
 897 add_extralibs(){
 898     prepend extralibs $($ldflags_filter "$@")
 899 }
 900
 901 add_host_cppflags(){
 902     append host_cppflags "$@"
 903 }
 904
 905 add_host_cflags(){
 906     append host_cflags $($host_cflags_filter "$@")
 907 }
 908
 909 add_host_ldflags(){
 910     append host_ldflags $($host_ldflags_filter "$@")
 911 }
 912
 913 add_compat(){
 914     append compat_objs $1
 915     shift
 916     map 'add_cppflags -D$v' "$@"
 917 }
 918
 919 test_cmd(){
 920     log "$@"
 921     "$@" >> $logfile 2>&1
 922 }
 923
 924 test_stat(){
 925     log test_stat "$@"
 926     stat "$1" >> $logfile 2>&1
 927 }
 928
 929 cc_o(){
 930     eval printf '%s\\n' $CC_O
 931 }
 932
 933 cc_e(){
 934     eval printf '%s\\n' $CC_E
 935 }
 936
 937 test_cc(){
 938     log test_cc "$@"
 939     cat > $TMPC
 940     log_file $TMPC
 941     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 942 }
 943
 944 test_cxx(){
 945     log test_cxx "$@"
 946     cat > $TMPCPP
 947     log_file $TMPCPP
 948     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 949 }
 950
 951 test_objcc(){
 952     log test_objcc "$@"
 953     cat > $TMPM
 954     log_file $TMPM
 955     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 956 }
 957
 958 test_cpp(){
 959     log test_cpp "$@"
 960     cat > $TMPC
 961     log_file $TMPC
 962     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 963 }
 964
 965 as_o(){
 966     eval printf '%s\\n' $AS_O
 967 }
 968
 969 test_as(){
 970     log test_as "$@"
 971     cat > $TMPS
 972     log_file $TMPS
 973     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 974 }
 975
 976 x86asm_o(){
 977     eval printf '%s\\n' $X86ASM_O
 978 }
 979
 980 test_x86asm(){
 981     log test_x86asm "$@"
 982     echo "$1" > $TMPASM
 983     log_file $TMPASM
 984     shift
 985     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
 986 }
 987
 988 check_cmd(){
 989     log check_cmd "$@"
 990     cmd=$1
 991     disabled $cmd && return
 992     disable $cmd
 993     test_cmd $@ && enable $cmd
 994 }
 995
 996 check_as(){
 997     log check_as "$@"
 998     name=$1
 999     code=$2
1000     shift 2
1001     disable $name
1002     test_as $@ <<EOF && enable $name
1003 $code
1004 EOF
1005 }
1006
1007 check_inline_asm(){
1008     log check_inline_asm "$@"
1009     name="$1"
1010     code="$2"
1011     shift 2
1012     disable $name
1013     test_cc "$@" <<EOF && enable $name
1014 void foo(void){ __asm__ volatile($code); }
1015 EOF
1016 }
1017
1018 check_inline_asm_flags(){
1019     log check_inline_asm_flags "$@"
1020     name="$1"
1021     code="$2"
1022     flags=''
1023     shift 2
1024     while [ "$1" != "" ]; do
1025       append flags $1
1026       shift
1027     done;
1028     disable $name
1029     cat > $TMPC <<EOF
1030 void foo(void){ __asm__ volatile($code); }
1031 EOF
1032     log_file $TMPC
1033     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1034     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1035 }
1036
1037 check_insn(){
1038     log check_insn "$@"
1039     check_inline_asm ${1}_inline "$2"
1040     check_as ${1}_external "$2"
1041 }
1042
1043 check_x86asm(){
1044     log check_x86asm "$@"
1045     name=$1
1046     shift
1047     disable $name
1048     test_x86asm "$@" && enable $name
1049 }
1050
1051 ld_o(){
1052     eval printf '%s\\n' $LD_O
1053 }
1054
1055 test_ld(){
1056     log test_ld "$@"
1057     type=$1
1058     shift 1
1059     flags=$(filter_out '-l*|*.so' $@)
1060     libs=$(filter '-l*|*.so' $@)
1061     test_$type $($cflags_filter $flags) || return
1062     flags=$($ldflags_filter $flags)
1063     libs=$($ldflags_filter $libs)
1064     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1065 }
1066
1067 check_ld(){
1068     log check_ld "$@"
1069     type=$1
1070     name=$2
1071     shift 2
1072     disable $name
1073     test_ld $type $@ && enable $name
1074 }
1075
1076 print_include(){
1077     hdr=$1
1078     test "${hdr%.h}" = "${hdr}" &&
1079         echo "#include $hdr"    ||
1080         echo "#include <$hdr>"
1081 }
1082
1083 test_code(){
1084     log test_code "$@"
1085     check=$1
1086     headers=$2
1087     code=$3
1088     shift 3
1089     {
1090         for hdr in $headers; do
1091             print_include $hdr
1092         done
1093         echo "int main(void) { $code; return 0; }"
1094     } | test_$check "$@"
1095 }
1096
1097 check_cppflags(){
1098     log check_cppflags "$@"
1099     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1100 #include <stdlib.h>
1101 EOF
1102 }
1103
1104 test_cflags(){
1105     log test_cflags "$@"
1106     set -- $($cflags_filter "$@")
1107     test_cc "$@" <<EOF
1108 int x;
1109 EOF
1110 }
1111
1112 check_cflags(){
1113     log check_cflags "$@"
1114     test_cflags "$@" && add_cflags "$@"
1115 }
1116
1117 check_cxxflags(){
1118     log check_cxxflags "$@"
1119     set -- $($cflags_filter "$@")
1120     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1121 int x;
1122 EOF
1123 }
1124
1125 test_objcflags(){
1126     log test_objcflags "$@"
1127     set -- $($objcflags_filter "$@")
1128     test_objcc "$@" <<EOF
1129 int x;
1130 EOF
1131 }
1132
1133 check_objcflags(){
1134     log check_objcflags "$@"
1135     test_objcflags "$@" && add_objcflags "$@"
1136 }
1137
1138 test_ldflags(){
1139     log test_ldflags "$@"
1140     set -- $($ldflags_filter "$@")
1141     test_ld "cc" "$@" <<EOF
1142 int main(void){ return 0; }
1143 EOF
1144 }
1145
1146 check_ldflags(){
1147     log check_ldflags "$@"
1148     test_ldflags "$@" && add_ldflags "$@"
1149 }
1150
1151 test_stripflags(){
1152     log test_stripflags "$@"
1153     # call test_cc to get a fresh TMPO
1154     test_cc <<EOF
1155 int main(void) { return 0; }
1156 EOF
1157     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1158 }
1159
1160 check_stripflags(){
1161     log check_stripflags "$@"
1162     test_stripflags "$@" && add_stripflags "$@"
1163 }
1164
1165 check_header(){
1166     log check_header "$@"
1167     headers=$1
1168     shift
1169     disable_sanitized $headers
1170     {
1171         for hdr in $headers; do
1172             print_include $hdr
1173         done
1174         echo "int x;"
1175     } | test_cpp "$@" && enable_sanitized $headers
1176 }
1177
1178 check_header_objcc(){
1179     log check_header_objcc "$@"
1180     rm -f -- "$TMPO"
1181     header=$1
1182     shift
1183     disable_sanitized $header
1184     {
1185        echo "#include <$header>"
1186        echo "int main(void) { return 0; }"
1187     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1188 }
1189
1190 check_apple_framework(){
1191     log check_apple_framework "$@"
1192     framework="$1"
1193     name="$(tolower $framework)"
1194     header="${framework}/${framework}.h"
1195     disable $name
1196     check_header_objcc $header &&
1197         enable $name && eval ${name}_extralibs='"-framework $framework"'
1198 }
1199
1200 check_func(){
1201     log check_func "$@"
1202     func=$1
1203     shift
1204     disable $func
1205     test_ld "cc" "$@" <<EOF && enable $func
1206 extern int $func();
1207 int main(void){ $func(); }
1208 EOF
1209 }
1210
1211 check_complexfunc(){
1212     log check_complexfunc "$@"
1213     func=$1
1214     narg=$2
1215     shift 2
1216     test $narg = 2 && args="f, g" || args="f * I"
1217     disable $func
1218     test_ld "cc" "$@" <<EOF && enable $func
1219 #include <complex.h>
1220 #include <math.h>
1221 float foo(complex float f, complex float g) { return $func($args); }
1222 int main(void){ return (int) foo; }
1223 EOF
1224 }
1225
1226 check_mathfunc(){
1227     log check_mathfunc "$@"
1228     func=$1
1229     narg=$2
1230     shift 2
1231     test $narg = 2 && args="f, g" || args="f"
1232     disable $func
1233     test_ld "cc" "$@" <<EOF && enable $func
1234 #include <math.h>
1235 float foo(float f, float g) { return $func($args); }
1236 int main(void){ return (int) foo; }
1237 EOF
1238 }
1239
1240 check_func_headers(){
1241     log check_func_headers "$@"
1242     headers=$1
1243     funcs=$2
1244     shift 2
1245     {
1246         for hdr in $headers; do
1247             print_include $hdr
1248         done
1249         echo "#include <stdint.h>"
1250         for func in $funcs; do
1251             echo "long check_$func(void) { return (long) $func; }"
1252         done
1253         echo "int main(void) { int ret = 0;"
1254         # LTO could optimize out the test functions without this
1255         for func in $funcs; do
1256             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1257         done
1258         echo "return ret; }"
1259     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1260 }
1261
1262 check_class_headers_cpp(){
1263     log check_class_headers_cpp "$@"
1264     headers=$1
1265     classes=$2
1266     shift 2
1267     {
1268         for hdr in $headers; do
1269             echo "#include <$hdr>"
1270         done
1271         echo "int main(void) { "
1272         i=1
1273         for class in $classes; do
1274             echo "$class obj$i;"
1275             i=$(expr $i + 1)
1276         done
1277         echo "return 0; }"
1278     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1279 }
1280
1281 test_cpp_condition(){
1282     log test_cpp_condition "$@"
1283     header=$1
1284     condition=$2
1285     shift 2
1286     test_cpp "$@" <<EOF
1287 #include <$header>
1288 #if !($condition)
1289 #error "unsatisfied condition: $condition"
1290 #endif
1291 EOF
1292 }
1293
1294 check_cpp_condition(){
1295     log check_cpp_condition "$@"
1296     name=$1
1297     shift 1
1298     disable $name
1299     test_cpp_condition "$@" && enable $name
1300 }
1301
1302 test_cflags_cc(){
1303     log test_cflags_cc "$@"
1304     flags=$1
1305     header=$2
1306     condition=$3
1307     shift 3
1308     set -- $($cflags_filter "$flags")
1309     test_cc "$@" <<EOF
1310 #include <$header>
1311 #if !($condition)
1312 #error "unsatisfied condition: $condition"
1313 #endif
1314 EOF
1315 }
1316
1317 check_lib(){
1318     log check_lib "$@"
1319     name="$1"
1320     headers="$2"
1321     funcs="$3"
1322     shift 3
1323     disable $name
1324     check_func_headers "$headers" "$funcs" "$@" &&
1325         enable $name && eval ${name}_extralibs="\$@"
1326 }
1327
1328 check_lib_cpp(){
1329     log check_lib_cpp "$@"
1330     name="$1"
1331     headers="$2"
1332     classes="$3"
1333     shift 3
1334     disable $name
1335     check_class_headers_cpp "$headers" "$classes" "$@" &&
1336         enable $name && eval ${name}_extralibs="\$@"
1337 }
1338
1339 test_pkg_config(){
1340     log test_pkg_config "$@"
1341     name="$1"
1342     pkg_version="$2"
1343     pkg="${2%% *}"
1344     headers="$3"
1345     funcs="$4"
1346     shift 4
1347     disable $name
1348     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1349     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1350     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1351     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1352         enable $name &&
1353         set_sanitized "${name}_cflags"    $pkg_cflags &&
1354         set_sanitized "${name}_extralibs" $pkg_libs
1355 }
1356
1357 check_pkg_config(){
1358     log check_pkg_config "$@"
1359     name="$1"
1360     test_pkg_config "$@" &&
1361         eval add_cflags \$${name}_cflags
1362 }
1363
1364 test_exec(){
1365     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1366 }
1367
1368 check_exec_crash(){
1369     log check_exec_crash "$@"
1370     code=$(cat)
1371
1372     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1373     # are safe but may not be available everywhere.  Thus we use
1374     # raise(SIGTERM) instead.  The check is run in a subshell so we
1375     # can redirect the "Terminated" message from the shell.  SIGBUS
1376     # is not defined by standard C so it is used conditionally.
1377
1378     (test_exec "$@") >> $logfile 2>&1 <<EOF
1379 #include <signal.h>
1380 static void sighandler(int sig){
1381     raise(SIGTERM);
1382 }
1383 int foo(void){
1384     $code
1385 }
1386 int (*func_ptr)(void) = foo;
1387 int main(void){
1388     signal(SIGILL, sighandler);
1389     signal(SIGFPE, sighandler);
1390     signal(SIGSEGV, sighandler);
1391 #ifdef SIGBUS
1392     signal(SIGBUS, sighandler);
1393 #endif
1394     return func_ptr();
1395 }
1396 EOF
1397 }
1398
1399 check_type(){
1400     log check_type "$@"
1401     headers=$1
1402     type=$2
1403     shift 2
1404     disable_sanitized "$type"
1405     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1406 }
1407
1408 check_struct(){
1409     log check_struct "$@"
1410     headers=$1
1411     struct=$2
1412     member=$3
1413     shift 3
1414     disable_sanitized "${struct}_${member}"
1415     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1416         enable_sanitized "${struct}_${member}"
1417 }
1418
1419 check_builtin(){
1420     log check_builtin "$@"
1421     name=$1
1422     headers=$2
1423     builtin=$3
1424     shift 3
1425     disable "$name"
1426     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1427 }
1428
1429 check_compile_assert(){
1430     log check_compile_assert "$@"
1431     name=$1
1432     headers=$2
1433     condition=$3
1434     shift 3
1435     disable "$name"
1436     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1437 }
1438
1439 check_cc(){
1440     log check_cc "$@"
1441     name=$1
1442     shift
1443     disable "$name"
1444     test_code cc "$@" && enable "$name"
1445 }
1446
1447 require(){
1448     log require "$@"
1449     name_version="$1"
1450     name="${1%% *}"
1451     shift
1452     check_lib $name "$@" || die "ERROR: $name_version not found"
1453 }
1454
1455 require_cc(){
1456     log require_cc "$@"
1457     name="$1"
1458     shift
1459     test_code cc "$@" || die "ERROR: $name failed"
1460 }
1461
1462 require_cpp(){
1463     name="$1"
1464     headers="$2"
1465     classes="$3"
1466     shift 3
1467     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1468 }
1469
1470 require_header(){
1471     log require_header "$@"
1472     headers="$1"
1473     check_header "$@" || die "ERROR: $headers not found"
1474 }
1475
1476 require_cpp_condition(){
1477     log require_cpp_condition "$@"
1478     condition="$2"
1479     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1480 }
1481
1482 require_pkg_config(){
1483     log require_pkg_config "$@"
1484     pkg_version="$2"
1485     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1486 }
1487
1488 hostcc_e(){
1489     eval printf '%s\\n' $HOSTCC_E
1490 }
1491
1492 hostcc_o(){
1493     eval printf '%s\\n' $HOSTCC_O
1494 }
1495
1496 test_host_cc(){
1497     log test_host_cc "$@"
1498     cat > $TMPC
1499     log_file $TMPC
1500     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1501 }
1502
1503 test_host_cpp(){
1504     log test_host_cpp "$@"
1505     cat > $TMPC
1506     log_file $TMPC
1507     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1508 }
1509
1510 check_host_cppflags(){
1511     log check_host_cppflags "$@"
1512     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1513 #include <stdlib.h>
1514 EOF
1515 }
1516
1517 check_host_cflags(){
1518     log check_host_cflags "$@"
1519     set -- $($host_cflags_filter "$@")
1520     test_host_cc "$@" <<EOF && append host_cflags "$@"
1521 int x;
1522 EOF
1523 }
1524
1525 test_host_cpp_condition(){
1526     log test_host_cpp_condition "$@"
1527     header=$1
1528     condition=$2
1529     shift 2
1530     test_host_cpp "$@" <<EOF
1531 #include <$header>
1532 #if !($condition)
1533 #error "unsatisfied condition: $condition"
1534 #endif
1535 EOF
1536 }
1537
1538 check_host_cpp_condition(){
1539     log check_host_cpp_condition "$@"
1540     name=$1
1541     shift 1
1542     disable $name
1543     test_host_cpp_condition "$@" && enable $name
1544 }
1545
1546 cp_if_changed(){
1547     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1548     mkdir -p "$(dirname $2)"
1549     cp -f "$1" "$2"
1550 }
1551
1552 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1553 # system-dependent things.
1554
1555 AVCODEC_COMPONENTS="
1556     bsfs
1557     decoders
1558     encoders
1559     hwaccels
1560     parsers
1561 "
1562
1563 AVDEVICE_COMPONENTS="
1564     indevs
1565     outdevs
1566 "
1567
1568 AVFILTER_COMPONENTS="
1569     filters
1570 "
1571
1572 AVFORMAT_COMPONENTS="
1573     demuxers
1574     muxers
1575     protocols
1576 "
1577
1578 COMPONENT_LIST="
1579     $AVCODEC_COMPONENTS
1580     $AVDEVICE_COMPONENTS
1581     $AVFILTER_COMPONENTS
1582     $AVFORMAT_COMPONENTS
1583 "
1584
1585 EXAMPLE_LIST="
1586     avio_dir_cmd_example
1587     avio_reading_example
1588     decode_audio_example
1589     decode_video_example
1590     demuxing_decoding_example
1591     encode_audio_example
1592     encode_video_example
1593     extract_mvs_example
1594     filter_audio_example
1595     filtering_audio_example
1596     filtering_video_example
1597     http_multiclient_example
1598     hw_decode_example
1599     metadata_example
1600     muxing_example
1601     qsvdec_example
1602     remuxing_example
1603     resampling_audio_example
1604     scaling_video_example
1605     transcode_aac_example
1606     transcoding_example
1607     vaapi_encode_example
1608     vaapi_transcode_example
1609 "
1610
1611 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1612     alsa
1613     appkit
1614     avfoundation
1615     bzlib
1616     coreimage
1617     iconv
1618     libxcb
1619     libxcb_shm
1620     libxcb_shape
1621     libxcb_xfixes
1622     lzma
1623     schannel
1624     sdl2
1625     securetransport
1626     sndio
1627     xlib
1628     zlib
1629 "
1630
1631 EXTERNAL_LIBRARY_GPL_LIST="
1632     avisynth
1633     frei0r
1634     libcdio
1635     librubberband
1636     libvidstab
1637     libx264
1638     libx265
1639     libxavs
1640     libxvid
1641 "
1642
1643 EXTERNAL_LIBRARY_NONFREE_LIST="
1644     decklink
1645     libndi_newtek
1646     libfdk_aac
1647     openssl
1648     libtls
1649 "
1650
1651 EXTERNAL_LIBRARY_VERSION3_LIST="
1652     gmp
1653     libopencore_amrnb
1654     libopencore_amrwb
1655     libvmaf
1656     libvo_amrwbenc
1657     rkmpp
1658 "
1659
1660 EXTERNAL_LIBRARY_GPLV3_LIST="
1661     libsmbclient
1662 "
1663
1664 EXTERNAL_LIBRARY_LIST="
1665     $EXTERNAL_LIBRARY_GPL_LIST
1666     $EXTERNAL_LIBRARY_NONFREE_LIST
1667     $EXTERNAL_LIBRARY_VERSION3_LIST
1668     $EXTERNAL_LIBRARY_GPLV3_LIST
1669     chromaprint
1670     gcrypt
1671     gnutls
1672     jni
1673     ladspa
1674     libaom
1675     libass
1676     libbluray
1677     libbs2b
1678     libcaca
1679     libcelt
1680     libcodec2
1681     libdc1394
1682     libdrm
1683     libflite
1684     libfontconfig
1685     libfreetype
1686     libfribidi
1687     libgme
1688     libgsm
1689     libiec61883
1690     libilbc
1691     libjack
1692     libkvazaar
1693     libmodplug
1694     libmp3lame
1695     libmysofa
1696     libopencv
1697     libopenh264
1698     libopenjpeg
1699     libopenmpt
1700     libopus
1701     libpulse
1702     librsvg
1703     librtmp
1704     libshine
1705     libsmbclient
1706     libsnappy
1707     libsoxr
1708     libspeex
1709     libsrt
1710     libssh
1711     libtesseract
1712     libtheora
1713     libtwolame
1714     libv4l2
1715     libvorbis
1716     libvpx
1717     libwavpack
1718     libwebp
1719     libxml2
1720     libzimg
1721     libzmq
1722     libzvbi
1723     lv2
1724     mediacodec
1725     openal
1726     opengl
1727 "
1728
1729 HWACCEL_AUTODETECT_LIBRARY_LIST="
1730     amf
1731     audiotoolbox
1732     crystalhd
1733     cuda
1734     cuvid
1735     d3d11va
1736     dxva2
1737     ffnvcodec
1738     nvdec
1739     nvenc
1740     vaapi
1741     vdpau
1742     videotoolbox
1743     v4l2_m2m
1744     xvmc
1745 "
1746
1747 # catchall list of things that require external libs to link
1748 EXTRALIBS_LIST="
1749     cpu_init
1750     cws2fws
1751 "
1752
1753 HWACCEL_LIBRARY_NONFREE_LIST="
1754     cuda_sdk
1755     libnpp
1756 "
1757
1758 HWACCEL_LIBRARY_LIST="
1759     $HWACCEL_LIBRARY_NONFREE_LIST
1760     libmfx
1761     mmal
1762     omx
1763     opencl
1764 "
1765
1766 DOCUMENT_LIST="
1767     doc
1768     htmlpages
1769     manpages
1770     podpages
1771     txtpages
1772 "
1773
1774 FEATURE_LIST="
1775     ftrapv
1776     gray
1777     hardcoded_tables
1778     omx_rpi
1779     runtime_cpudetect
1780     safe_bitstream_reader
1781     shared
1782     small
1783     static
1784     swscale_alpha
1785 "
1786
1787 LIBRARY_LIST="
1788     avcodec
1789     avdevice
1790     avfilter
1791     avformat
1792     avresample
1793     avutil
1794     postproc
1795     swresample
1796     swscale
1797 "
1798
1799 LICENSE_LIST="
1800     gpl
1801     nonfree
1802     version3
1803 "
1804
1805 PROGRAM_LIST="
1806     ffplay
1807     ffprobe
1808     ffmpeg
1809 "
1810
1811 SUBSYSTEM_LIST="
1812     dct
1813     dwt
1814     error_resilience
1815     faan
1816     fast_unaligned
1817     fft
1818     lsp
1819     lzo
1820     mdct
1821     pixelutils
1822     network
1823     rdft
1824 "
1825
1826 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1827 CONFIG_LIST="
1828     $DOCUMENT_LIST
1829     $EXAMPLE_LIST
1830     $EXTERNAL_LIBRARY_LIST
1831     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1832     $HWACCEL_LIBRARY_LIST
1833     $HWACCEL_AUTODETECT_LIBRARY_LIST
1834     $FEATURE_LIST
1835     $LICENSE_LIST
1836     $LIBRARY_LIST
1837     $PROGRAM_LIST
1838     $SUBSYSTEM_LIST
1839     autodetect
1840     fontconfig
1841     linux_perf
1842     memory_poisoning
1843     neon_clobber_test
1844     ossfuzz
1845     pic
1846     thumb
1847     valgrind_backtrace
1848     xmm_clobber_test
1849     $COMPONENT_LIST
1850 "
1851
1852 THREADS_LIST="
1853     pthreads
1854     os2threads
1855     w32threads
1856 "
1857
1858 ATOMICS_LIST="
1859     atomics_gcc
1860     atomics_suncc
1861     atomics_win32
1862 "
1863
1864 AUTODETECT_LIBS="
1865     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1866     $HWACCEL_AUTODETECT_LIBRARY_LIST
1867     $THREADS_LIST
1868 "
1869
1870 ARCH_LIST="
1871     aarch64
1872     alpha
1873     arm
1874     avr32
1875     avr32_ap
1876     avr32_uc
1877     bfin
1878     ia64
1879     m68k
1880     mips
1881     mips64
1882     parisc
1883     ppc
1884     ppc64
1885     s390
1886     sh4
1887     sparc
1888     sparc64
1889     tilegx
1890     tilepro
1891     tomi
1892     x86
1893     x86_32
1894     x86_64
1895 "
1896
1897 ARCH_EXT_LIST_ARM="
1898     armv5te
1899     armv6
1900     armv6t2
1901     armv8
1902     neon
1903     vfp
1904     vfpv3
1905     setend
1906 "
1907
1908 ARCH_EXT_LIST_MIPS="
1909     mipsfpu
1910     mips32r2
1911     mips32r5
1912     mips64r2
1913     mips32r6
1914     mips64r6
1915     mipsdsp
1916     mipsdspr2
1917     msa
1918 "
1919
1920 ARCH_EXT_LIST_LOONGSON="
1921     loongson2
1922     loongson3
1923     mmi
1924 "
1925
1926 ARCH_EXT_LIST_X86_SIMD="
1927     aesni
1928     amd3dnow
1929     amd3dnowext
1930     avx
1931     avx2
1932     avx512
1933     fma3
1934     fma4
1935     mmx
1936     mmxext
1937     sse
1938     sse2
1939     sse3
1940     sse4
1941     sse42
1942     ssse3
1943     xop
1944 "
1945
1946 ARCH_EXT_LIST_PPC="
1947     altivec
1948     dcbzl
1949     ldbrx
1950     power8
1951     ppc4xx
1952     vsx
1953 "
1954
1955 ARCH_EXT_LIST_X86="
1956     $ARCH_EXT_LIST_X86_SIMD
1957     cpunop
1958     i686
1959 "
1960
1961 ARCH_EXT_LIST="
1962     $ARCH_EXT_LIST_ARM
1963     $ARCH_EXT_LIST_PPC
1964     $ARCH_EXT_LIST_X86
1965     $ARCH_EXT_LIST_MIPS
1966     $ARCH_EXT_LIST_LOONGSON
1967 "
1968
1969 ARCH_FEATURES="
1970     aligned_stack
1971     fast_64bit
1972     fast_clz
1973     fast_cmov
1974     local_aligned
1975     simd_align_16
1976     simd_align_32
1977     simd_align_64
1978 "
1979
1980 BUILTIN_LIST="
1981     atomic_cas_ptr
1982     machine_rw_barrier
1983     MemoryBarrier
1984     mm_empty
1985     rdtsc
1986     sem_timedwait
1987     sync_val_compare_and_swap
1988 "
1989 HAVE_LIST_CMDLINE="
1990     inline_asm
1991     symver
1992     x86asm
1993 "
1994
1995 HAVE_LIST_PUB="
1996     bigendian
1997     fast_unaligned
1998 "
1999
2000 HEADERS_LIST="
2001     arpa_inet_h
2002     asm_types_h
2003     cdio_paranoia_h
2004     cdio_paranoia_paranoia_h
2005     cuda_h
2006     dispatch_dispatch_h
2007     dev_bktr_ioctl_bt848_h
2008     dev_bktr_ioctl_meteor_h
2009     dev_ic_bt8xx_h
2010     dev_video_bktr_ioctl_bt848_h
2011     dev_video_meteor_ioctl_meteor_h
2012     direct_h
2013     dirent_h
2014     dxgidebug_h
2015     dxva_h
2016     ES2_gl_h
2017     gsm_h
2018     io_h
2019     machine_ioctl_bt848_h
2020     machine_ioctl_meteor_h
2021     malloc_h
2022     opencv2_core_core_c_h
2023     OpenGL_gl3_h
2024     poll_h
2025     sys_param_h
2026     sys_resource_h
2027     sys_select_h
2028     sys_soundcard_h
2029     sys_time_h
2030     sys_un_h
2031     sys_videoio_h
2032     termios_h
2033     udplite_h
2034     unistd_h
2035     valgrind_valgrind_h
2036     windows_h
2037     winsock2_h
2038 "
2039
2040 INTRINSICS_LIST="
2041     intrinsics_neon
2042 "
2043
2044 COMPLEX_FUNCS="
2045     cabs
2046     cexp
2047 "
2048
2049 MATH_FUNCS="
2050     atanf
2051     atan2f
2052     cbrt
2053     cbrtf
2054     copysign
2055     cosf
2056     erf
2057     exp2
2058     exp2f
2059     expf
2060     hypot
2061     isfinite
2062     isinf
2063     isnan
2064     ldexpf
2065     llrint
2066     llrintf
2067     log2
2068     log2f
2069     log10f
2070     lrint
2071     lrintf
2072     powf
2073     rint
2074     round
2075     roundf
2076     sinf
2077     trunc
2078     truncf
2079 "
2080
2081 SYSTEM_FEATURES="
2082     dos_paths
2083     libc_msvcrt
2084     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2085     section_data_rel_ro
2086     threads
2087     uwp
2088     winrt
2089 "
2090
2091 SYSTEM_FUNCS="
2092     access
2093     aligned_malloc
2094     arc4random
2095     clock_gettime
2096     closesocket
2097     CommandLineToArgvW
2098     fcntl
2099     getaddrinfo
2100     gethrtime
2101     getopt
2102     GetProcessAffinityMask
2103     GetProcessMemoryInfo
2104     GetProcessTimes
2105     getrusage
2106     GetSystemTimeAsFileTime
2107     gettimeofday
2108     glob
2109     glXGetProcAddress
2110     gmtime_r
2111     inet_aton
2112     isatty
2113     kbhit
2114     localtime_r
2115     lstat
2116     lzo1x_999_compress
2117     mach_absolute_time
2118     MapViewOfFile
2119     memalign
2120     mkstemp
2121     mmap
2122     mprotect
2123     nanosleep
2124     PeekNamedPipe
2125     posix_memalign
2126     pthread_cancel
2127     sched_getaffinity
2128     SecItemImport
2129     SetConsoleTextAttribute
2130     SetConsoleCtrlHandler
2131     setmode
2132     setrlimit
2133     Sleep
2134     strerror_r
2135     sysconf
2136     sysctl
2137     usleep
2138     UTGetOSTypeFromString
2139     VirtualAlloc
2140     wglGetProcAddress
2141 "
2142
2143 SYSTEM_LIBRARIES="
2144     vaapi_drm
2145     vaapi_x11
2146     vdpau_x11
2147     wincrypt
2148 "
2149
2150 TOOLCHAIN_FEATURES="
2151     as_arch_directive
2152     as_dn_directive
2153     as_fpu_directive
2154     as_func
2155     as_object_arch
2156     asm_mod_q
2157     blocks_extension
2158     ebp_available
2159     ebx_available
2160     gnu_as
2161     gnu_windres
2162     ibm_asm
2163     inline_asm_direct_symbol_refs
2164     inline_asm_labels
2165     inline_asm_nonlocal_labels
2166     pragma_deprecated
2167     rsync_contimeout
2168     symver_asm_label
2169     symver_gnu_asm
2170     vfp_args
2171     xform_asm
2172     xmm_clobbers
2173 "
2174
2175 TYPES_LIST="
2176     kCMVideoCodecType_HEVC
2177     socklen_t
2178     struct_addrinfo
2179     struct_group_source_req
2180     struct_ip_mreq_source
2181     struct_ipv6_mreq
2182     struct_msghdr_msg_flags
2183     struct_pollfd
2184     struct_rusage_ru_maxrss
2185     struct_sctp_event_subscribe
2186     struct_sockaddr_in6
2187     struct_sockaddr_sa_len
2188     struct_sockaddr_storage
2189     struct_stat_st_mtim_tv_nsec
2190     struct_v4l2_frmivalenum_discrete
2191 "
2192
2193 HAVE_LIST="
2194     $ARCH_EXT_LIST
2195     $(add_suffix _external $ARCH_EXT_LIST)
2196     $(add_suffix _inline   $ARCH_EXT_LIST)
2197     $ARCH_FEATURES
2198     $BUILTIN_LIST
2199     $COMPLEX_FUNCS
2200     $HAVE_LIST_CMDLINE
2201     $HAVE_LIST_PUB
2202     $HEADERS_LIST
2203     $INTRINSICS_LIST
2204     $MATH_FUNCS
2205     $SYSTEM_FEATURES
2206     $SYSTEM_FUNCS
2207     $SYSTEM_LIBRARIES
2208     $THREADS_LIST
2209     $TOOLCHAIN_FEATURES
2210     $TYPES_LIST
2211     makeinfo
2212     makeinfo_html
2213     opencl_d3d11
2214     opencl_drm_arm
2215     opencl_drm_beignet
2216     opencl_dxva2
2217     opencl_vaapi_beignet
2218     opencl_vaapi_intel_media
2219     perl
2220     pod2man
2221     texi2html
2222 "
2223
2224 # options emitted with CONFIG_ prefix but not available on the command line
2225 CONFIG_EXTRA="
2226     aandcttables
2227     ac3dsp
2228     adts_header
2229     audio_frame_queue
2230     audiodsp
2231     blockdsp
2232     bswapdsp
2233     cabac
2234     cbs
2235     cbs_h264
2236     cbs_h265
2237     cbs_mpeg2
2238     dirac_parse
2239     dvprofile
2240     exif
2241     faandct
2242     faanidct
2243     fdctdsp
2244     flacdsp
2245     fmtconvert
2246     frame_thread_encoder
2247     g722dsp
2248     golomb
2249     gplv3
2250     h263dsp
2251     h264chroma
2252     h264dsp
2253     h264parse
2254     h264pred
2255     h264qpel
2256     hevcparse
2257     hpeldsp
2258     huffman
2259     huffyuvdsp
2260     huffyuvencdsp
2261     idctdsp
2262     iirfilter
2263     mdct15
2264     intrax8
2265     iso_media
2266     ividsp
2267     jpegtables
2268     lgplv3
2269     libx262
2270     llauddsp
2271     llviddsp
2272     llvidencdsp
2273     lpc
2274     lzf
2275     me_cmp
2276     mpeg_er
2277     mpegaudio
2278     mpegaudiodsp
2279     mpegaudioheader
2280     mpegvideo
2281     mpegvideoenc
2282     mss34dsp
2283     pixblockdsp
2284     qpeldsp
2285     qsv
2286     qsvdec
2287     qsvenc
2288     qsvvpp
2289     rangecoder
2290     riffdec
2291     riffenc
2292     rtpdec
2293     rtpenc_chain
2294     rv34dsp
2295     sinewin
2296     snappy
2297     srtp
2298     startcode
2299     texturedsp
2300     texturedspenc
2301     tpeldsp
2302     vaapi_1
2303     vaapi_encode
2304     vc1dsp
2305     videodsp
2306     vp3dsp
2307     vp56dsp
2308     vp8dsp
2309     wma_freqs
2310     wmv2dsp
2311 "
2312
2313 CMDLINE_SELECT="
2314     $ARCH_EXT_LIST
2315     $CONFIG_LIST
2316     $HAVE_LIST_CMDLINE
2317     $THREADS_LIST
2318     asm
2319     cross_compile
2320     debug
2321     extra_warnings
2322     logging
2323     lto
2324     optimizations
2325     rpath
2326     stripping
2327 "
2328
2329 PATHS_LIST="
2330     bindir
2331     datadir
2332     docdir
2333     incdir
2334     libdir
2335     mandir
2336     pkgconfigdir
2337     prefix
2338     shlibdir
2339     install_name_dir
2340 "
2341
2342 CMDLINE_SET="
2343     $PATHS_LIST
2344     ar
2345     arch
2346     as
2347     assert_level
2348     build_suffix
2349     cc
2350     objcc
2351     cpu
2352     cross_prefix
2353     custom_allocator
2354     cxx
2355     dep_cc
2356     doxygen
2357     env
2358     extra_version
2359     gas
2360     host_cc
2361     host_cflags
2362     host_extralibs
2363     host_ld
2364     host_ldflags
2365     host_os
2366     ignore_tests
2367     install
2368     ld
2369     ln_s
2370     logfile
2371     malloc_prefix
2372     nm
2373     optflags
2374     nvccflags
2375     pkg_config
2376     pkg_config_flags
2377     progs_suffix
2378     random_seed
2379     ranlib
2380     samples
2381     strip
2382     sws_max_filter_size
2383     sysinclude
2384     sysroot
2385     target_exec
2386     target_os
2387     target_path
2388     target_samples
2389     tempprefix
2390     toolchain
2391     valgrind
2392     x86asmexe
2393 "
2394
2395 CMDLINE_APPEND="
2396     extra_cflags
2397     extra_cxxflags
2398     extra_objcflags
2399     host_cppflags
2400 "
2401
2402 # code dependency declarations
2403
2404 # architecture extensions
2405
2406 armv5te_deps="arm"
2407 armv6_deps="arm"
2408 armv6t2_deps="arm"
2409 armv8_deps="aarch64"
2410 neon_deps_any="aarch64 arm"
2411 intrinsics_neon_deps="neon"
2412 vfp_deps_any="aarch64 arm"
2413 vfpv3_deps="vfp"
2414 setend_deps="arm"
2415
2416 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2417
2418 altivec_deps="ppc"
2419 dcbzl_deps="ppc"
2420 ldbrx_deps="ppc"
2421 ppc4xx_deps="ppc"
2422 vsx_deps="altivec"
2423 power8_deps="vsx"
2424
2425 loongson2_deps="mips"
2426 loongson3_deps="mips"
2427 mips32r2_deps="mips"
2428 mips32r5_deps="mips"
2429 mips32r6_deps="mips"
2430 mips64r2_deps="mips"
2431 mips64r6_deps="mips"
2432 mipsfpu_deps="mips"
2433 mipsdsp_deps="mips"
2434 mipsdspr2_deps="mips"
2435 mmi_deps="mips"
2436 msa_deps="mipsfpu"
2437
2438 cpunop_deps="i686"
2439 x86_64_select="i686"
2440 x86_64_suggest="fast_cmov"
2441
2442 amd3dnow_deps="mmx"
2443 amd3dnowext_deps="amd3dnow"
2444 i686_deps="x86"
2445 mmx_deps="x86"
2446 mmxext_deps="mmx"
2447 sse_deps="mmxext"
2448 sse2_deps="sse"
2449 sse3_deps="sse2"
2450 ssse3_deps="sse3"
2451 sse4_deps="ssse3"
2452 sse42_deps="sse4"
2453 aesni_deps="sse42"
2454 avx_deps="sse42"
2455 xop_deps="avx"
2456 fma3_deps="avx"
2457 fma4_deps="avx"
2458 avx2_deps="avx"
2459 avx512_deps="avx2"
2460
2461 mmx_external_deps="x86asm"
2462 mmx_inline_deps="inline_asm x86"
2463 mmx_suggest="mmx_external mmx_inline"
2464
2465 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2466     eval dep=\$${ext}_deps
2467     eval ${ext}_external_deps='"${dep}_external"'
2468     eval ${ext}_inline_deps='"${dep}_inline"'
2469     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2470 done
2471
2472 aligned_stack_if_any="aarch64 ppc x86"
2473 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2474 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2475 fast_unaligned_if_any="aarch64 ppc x86"
2476 simd_align_16_if_any="altivec neon sse"
2477 simd_align_32_if_any="avx"
2478 simd_align_64_if_any="avx512"
2479
2480 # system capabilities
2481 symver_if_any="symver_asm_label symver_gnu_asm"
2482 valgrind_backtrace_conflict="optimizations"
2483 valgrind_backtrace_deps="valgrind_valgrind_h"
2484
2485 # threading support
2486 atomics_gcc_if="sync_val_compare_and_swap"
2487 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2488 atomics_win32_if="MemoryBarrier"
2489 atomics_native_if_any="$ATOMICS_LIST"
2490 w32threads_deps="atomics_native"
2491 threads_if_any="$THREADS_LIST"
2492
2493 # subsystems
2494 cbs_h264_select="cbs golomb"
2495 cbs_h265_select="cbs golomb"
2496 cbs_mpeg2_select="cbs"
2497 dct_select="rdft"
2498 dirac_parse_select="golomb"
2499 error_resilience_select="me_cmp"
2500 faandct_deps="faan"
2501 faandct_select="fdctdsp"
2502 faanidct_deps="faan"
2503 faanidct_select="idctdsp"
2504 h264dsp_select="startcode"
2505 hevcparse_select="golomb"
2506 frame_thread_encoder_deps="encoders threads"
2507 intrax8_select="blockdsp idctdsp"
2508 mdct_select="fft"
2509 mdct15_select="fft"
2510 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2511 mpeg_er_select="error_resilience"
2512 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2513 mpegaudiodsp_select="dct"
2514 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2515 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2516 vc1dsp_select="h264chroma qpeldsp startcode"
2517 rdft_select="fft"
2518
2519 # decoders / encoders
2520 aac_decoder_select="adts_header mdct15 mdct sinewin"
2521 aac_fixed_decoder_select="adts_header mdct sinewin"
2522 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2523 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2524 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2525 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2526 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2527 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2528 adpcm_g722_decoder_select="g722dsp"
2529 adpcm_g722_encoder_select="g722dsp"
2530 aic_decoder_select="golomb idctdsp"
2531 alac_encoder_select="lpc"
2532 als_decoder_select="bswapdsp"
2533 amrnb_decoder_select="lsp"
2534 amrwb_decoder_select="lsp"
2535 amv_decoder_select="sp5x_decoder exif"
2536 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2537 ape_decoder_select="bswapdsp llauddsp"
2538 apng_decoder_deps="zlib"
2539 apng_encoder_deps="zlib"
2540 apng_encoder_select="llvidencdsp"
2541 aptx_decoder_select="audio_frame_queue"
2542 aptx_encoder_select="audio_frame_queue"
2543 aptx_hd_decoder_select="audio_frame_queue"
2544 aptx_hd_encoder_select="audio_frame_queue"
2545 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2546 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2547 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2548 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2549 atrac1_decoder_select="mdct sinewin"
2550 atrac3_decoder_select="mdct"
2551 atrac3p_decoder_select="mdct sinewin"
2552 avrn_decoder_select="exif jpegtables"
2553 bink_decoder_select="blockdsp hpeldsp"
2554 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2555 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2556 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2557 clearvideo_decoder_select="idctdsp"
2558 cllc_decoder_select="bswapdsp"
2559 comfortnoise_encoder_select="lpc"
2560 cook_decoder_select="audiodsp mdct sinewin"
2561 cscd_decoder_select="lzo"
2562 cscd_decoder_suggest="zlib"
2563 dca_decoder_select="mdct"
2564 dds_decoder_select="texturedsp"
2565 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2566 dnxhd_decoder_select="blockdsp idctdsp"
2567 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2568 dolby_e_decoder_select="mdct"
2569 dvvideo_decoder_select="dvprofile idctdsp"
2570 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2571 dxa_decoder_deps="zlib"
2572 dxv_decoder_select="lzf texturedsp"
2573 eac3_decoder_select="ac3_decoder"
2574 eac3_encoder_select="ac3_encoder"
2575 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2576 eatgq_decoder_select="aandcttables"
2577 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2578 exr_decoder_deps="zlib"
2579 ffv1_decoder_select="rangecoder"
2580 ffv1_encoder_select="rangecoder"
2581 ffvhuff_decoder_select="huffyuv_decoder"
2582 ffvhuff_encoder_select="huffyuv_encoder"
2583 fic_decoder_select="golomb"
2584 flac_decoder_select="flacdsp"
2585 flac_encoder_select="bswapdsp flacdsp lpc"
2586 flashsv2_decoder_deps="zlib"
2587 flashsv2_encoder_deps="zlib"
2588 flashsv_decoder_deps="zlib"
2589 flashsv_encoder_deps="zlib"
2590 flv_decoder_select="h263_decoder"
2591 flv_encoder_select="h263_encoder"
2592 fourxm_decoder_select="blockdsp bswapdsp"
2593 fraps_decoder_select="bswapdsp huffman"
2594 g2m_decoder_deps="zlib"
2595 g2m_decoder_select="blockdsp idctdsp jpegtables"
2596 g729_decoder_select="audiodsp"
2597 h261_decoder_select="mpegvideo"
2598 h261_encoder_select="aandcttables mpegvideoenc"
2599 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2600 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2601 h263i_decoder_select="h263_decoder"
2602 h263p_decoder_select="h263_decoder"
2603 h263p_encoder_select="h263_encoder"
2604 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2605 h264_decoder_suggest="error_resilience"
2606 hap_decoder_select="snappy texturedsp"
2607 hap_encoder_deps="libsnappy"
2608 hap_encoder_select="texturedspenc"
2609 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2610 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2611 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2612 iac_decoder_select="imc_decoder"
2613 imc_decoder_select="bswapdsp fft mdct sinewin"
2614 indeo3_decoder_select="hpeldsp"
2615 indeo4_decoder_select="ividsp"
2616 indeo5_decoder_select="ividsp"
2617 interplay_video_decoder_select="hpeldsp"
2618 jpegls_decoder_select="mjpeg_decoder"
2619 jv_decoder_select="blockdsp"
2620 lagarith_decoder_select="llviddsp"
2621 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2622 magicyuv_decoder_select="llviddsp"
2623 magicyuv_encoder_select="llvidencdsp"
2624 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2625 metasound_decoder_select="lsp mdct sinewin"
2626 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2627 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2628 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2629 mjpegb_decoder_select="mjpeg_decoder"
2630 mlp_decoder_select="mlp_parser"
2631 mlp_encoder_select="lpc"
2632 motionpixels_decoder_select="bswapdsp"
2633 mp1_decoder_select="mpegaudio"
2634 mp1float_decoder_select="mpegaudio"
2635 mp2_decoder_select="mpegaudio"
2636 mp2float_decoder_select="mpegaudio"
2637 mp3_decoder_select="mpegaudio"
2638 mp3adu_decoder_select="mpegaudio"
2639 mp3adufloat_decoder_select="mpegaudio"
2640 mp3float_decoder_select="mpegaudio"
2641 mp3on4_decoder_select="mpegaudio"
2642 mp3on4float_decoder_select="mpegaudio"
2643 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2644 mpc8_decoder_select="mpegaudiodsp"
2645 mpegvideo_decoder_select="mpegvideo"
2646 mpeg1video_decoder_select="mpegvideo"
2647 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2648 mpeg2video_decoder_select="mpegvideo"
2649 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2650 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2651 mpeg4_encoder_select="h263_encoder"
2652 msa1_decoder_select="mss34dsp"
2653 mscc_decoder_deps="zlib"
2654 msmpeg4v1_decoder_select="h263_decoder"
2655 msmpeg4v2_decoder_select="h263_decoder"
2656 msmpeg4v2_encoder_select="h263_encoder"
2657 msmpeg4v3_decoder_select="h263_decoder"
2658 msmpeg4v3_encoder_select="h263_encoder"
2659 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2660 mts2_decoder_select="mss34dsp"
2661 mxpeg_decoder_select="mjpeg_decoder"
2662 nellymoser_decoder_select="mdct sinewin"
2663 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2664 nuv_decoder_select="idctdsp lzo"
2665 on2avc_decoder_select="mdct"
2666 opus_decoder_deps="swresample"
2667 opus_decoder_select="mdct15"
2668 opus_encoder_select="audio_frame_queue mdct15"
2669 png_decoder_deps="zlib"
2670 png_encoder_deps="zlib"
2671 png_encoder_select="llvidencdsp"
2672 prores_decoder_select="blockdsp idctdsp"
2673 prores_encoder_select="fdctdsp"
2674 qcelp_decoder_select="lsp"
2675 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2676 ra_144_decoder_select="audiodsp"
2677 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2678 ralf_decoder_select="golomb"
2679 rawvideo_decoder_select="bswapdsp"
2680 rscc_decoder_deps="zlib"
2681 rtjpeg_decoder_select="me_cmp"
2682 rv10_decoder_select="h263_decoder"
2683 rv10_encoder_select="h263_encoder"
2684 rv20_decoder_select="h263_decoder"
2685 rv20_encoder_select="h263_encoder"
2686 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2687 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2688 screenpresso_decoder_deps="zlib"
2689 shorten_decoder_select="bswapdsp"
2690 sipr_decoder_select="lsp"
2691 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2692 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2693 sonic_decoder_select="golomb rangecoder"
2694 sonic_encoder_select="golomb rangecoder"
2695 sonic_ls_encoder_select="golomb rangecoder"
2696 sp5x_decoder_select="mjpeg_decoder"
2697 srgc_decoder_deps="zlib"
2698 svq1_decoder_select="hpeldsp"
2699 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2700 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2701 svq3_decoder_suggest="zlib"
2702 tak_decoder_select="audiodsp"
2703 tdsc_decoder_deps="zlib"
2704 tdsc_decoder_select="mjpeg_decoder"
2705 theora_decoder_select="vp3_decoder"
2706 thp_decoder_select="mjpeg_decoder"
2707 tiff_decoder_suggest="zlib lzma"
2708 tiff_encoder_suggest="zlib"
2709 truehd_decoder_select="mlp_parser"
2710 truehd_encoder_select="lpc"
2711 truemotion2_decoder_select="bswapdsp"
2712 truespeech_decoder_select="bswapdsp"
2713 tscc_decoder_deps="zlib"
2714 twinvq_decoder_select="mdct lsp sinewin"
2715 txd_decoder_select="texturedsp"
2716 utvideo_decoder_select="bswapdsp llviddsp"
2717 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2718 vble_decoder_select="llviddsp"
2719 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2720 vc1image_decoder_select="vc1_decoder"
2721 vorbis_decoder_select="mdct"
2722 vorbis_encoder_select="audio_frame_queue mdct"
2723 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2724 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2725 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2726 vp6a_decoder_select="vp6_decoder"
2727 vp6f_decoder_select="vp6_decoder"
2728 vp7_decoder_select="h264pred videodsp vp8dsp"
2729 vp8_decoder_select="h264pred videodsp vp8dsp"
2730 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2731 webp_decoder_select="vp8_decoder exif"
2732 wmalossless_decoder_select="llauddsp"
2733 wmapro_decoder_select="mdct sinewin wma_freqs"
2734 wmav1_decoder_select="mdct sinewin wma_freqs"
2735 wmav1_encoder_select="mdct sinewin wma_freqs"
2736 wmav2_decoder_select="mdct sinewin wma_freqs"
2737 wmav2_encoder_select="mdct sinewin wma_freqs"
2738 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2739 wmv1_decoder_select="h263_decoder"
2740 wmv1_encoder_select="h263_encoder"
2741 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2742 wmv2_encoder_select="h263_encoder wmv2dsp"
2743 wmv3_decoder_select="vc1_decoder"
2744 wmv3image_decoder_select="wmv3_decoder"
2745 xma1_decoder_select="wmapro_decoder"
2746 xma2_decoder_select="wmapro_decoder"
2747 zerocodec_decoder_deps="zlib"
2748 zlib_decoder_deps="zlib"
2749 zlib_encoder_deps="zlib"
2750 zmbv_decoder_deps="zlib"
2751 zmbv_encoder_deps="zlib"
2752
2753 # hardware accelerators
2754 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2755 cuda_deps="ffnvcodec"
2756 cuvid_deps="ffnvcodec"
2757 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2758 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2759 ffnvcodec_deps_any="libdl LoadLibrary"
2760 nvdec_deps="ffnvcodec"
2761 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2762 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2763 xvmc_deps="X11_extensions_XvMClib_h"
2764
2765 h263_vaapi_hwaccel_deps="vaapi"
2766 h263_vaapi_hwaccel_select="h263_decoder"
2767 h263_videotoolbox_hwaccel_deps="videotoolbox"
2768 h263_videotoolbox_hwaccel_select="h263_decoder"
2769 h264_d3d11va_hwaccel_deps="d3d11va"
2770 h264_d3d11va_hwaccel_select="h264_decoder"
2771 h264_d3d11va2_hwaccel_deps="d3d11va"
2772 h264_d3d11va2_hwaccel_select="h264_decoder"
2773 h264_dxva2_hwaccel_deps="dxva2"
2774 h264_dxva2_hwaccel_select="h264_decoder"
2775 h264_nvdec_hwaccel_deps="nvdec"
2776 h264_nvdec_hwaccel_select="h264_decoder"
2777 h264_vaapi_hwaccel_deps="vaapi"
2778 h264_vaapi_hwaccel_select="h264_decoder"
2779 h264_vdpau_hwaccel_deps="vdpau"
2780 h264_vdpau_hwaccel_select="h264_decoder"
2781 h264_videotoolbox_hwaccel_deps="videotoolbox"
2782 h264_videotoolbox_hwaccel_select="h264_decoder"
2783 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2784 hevc_d3d11va_hwaccel_select="hevc_decoder"
2785 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2786 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2787 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2788 hevc_dxva2_hwaccel_select="hevc_decoder"
2789 hevc_nvdec_hwaccel_deps="nvdec"
2790 hevc_nvdec_hwaccel_select="hevc_decoder"
2791 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2792 hevc_vaapi_hwaccel_select="hevc_decoder"
2793 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2794 hevc_vdpau_hwaccel_select="hevc_decoder"
2795 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2796 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2797 mjpeg_nvdec_hwaccel_deps="nvdec"
2798 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2799 mjpeg_vaapi_hwaccel_deps="vaapi"
2800 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2801 mpeg_xvmc_hwaccel_deps="xvmc"
2802 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2803 mpeg1_nvdec_hwaccel_deps="nvdec"
2804 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2805 mpeg1_vdpau_hwaccel_deps="vdpau"
2806 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2807 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2808 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2809 mpeg1_xvmc_hwaccel_deps="xvmc"
2810 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2811 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2812 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2813 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2814 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2815 mpeg2_dxva2_hwaccel_deps="dxva2"
2816 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2817 mpeg2_nvdec_hwaccel_deps="nvdec"
2818 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2819 mpeg2_vaapi_hwaccel_deps="vaapi"
2820 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2821 mpeg2_vdpau_hwaccel_deps="vdpau"
2822 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2823 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2824 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2825 mpeg2_xvmc_hwaccel_deps="xvmc"
2826 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2827 mpeg4_nvdec_hwaccel_deps="nvdec"
2828 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2829 mpeg4_vaapi_hwaccel_deps="vaapi"
2830 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2831 mpeg4_vdpau_hwaccel_deps="vdpau"
2832 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2833 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2834 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2835 vc1_d3d11va_hwaccel_deps="d3d11va"
2836 vc1_d3d11va_hwaccel_select="vc1_decoder"
2837 vc1_d3d11va2_hwaccel_deps="d3d11va"
2838 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2839 vc1_dxva2_hwaccel_deps="dxva2"
2840 vc1_dxva2_hwaccel_select="vc1_decoder"
2841 vc1_nvdec_hwaccel_deps="nvdec"
2842 vc1_nvdec_hwaccel_select="vc1_decoder"
2843 vc1_vaapi_hwaccel_deps="vaapi"
2844 vc1_vaapi_hwaccel_select="vc1_decoder"
2845 vc1_vdpau_hwaccel_deps="vdpau"
2846 vc1_vdpau_hwaccel_select="vc1_decoder"
2847 vp8_nvdec_hwaccel_deps="nvdec"
2848 vp8_nvdec_hwaccel_select="vp8_decoder"
2849 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2850 vp8_vaapi_hwaccel_select="vp8_decoder"
2851 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2852 vp9_d3d11va_hwaccel_select="vp9_decoder"
2853 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2854 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2855 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2856 vp9_dxva2_hwaccel_select="vp9_decoder"
2857 vp9_nvdec_hwaccel_deps="nvdec"
2858 vp9_nvdec_hwaccel_select="vp9_decoder"
2859 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2860 vp9_vaapi_hwaccel_select="vp9_decoder"
2861 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2862 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2863 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2864 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2865 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2866 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2867
2868 # hardware-accelerated codecs
2869 omx_deps="libdl pthreads"
2870 omx_rpi_select="omx"
2871 qsv_deps="libmfx"
2872 qsvdec_select="qsv"
2873 qsvenc_select="qsv"
2874 qsvvpp_select="qsv"
2875 vaapi_encode_deps="vaapi"
2876 v4l2_m2m_deps_any="linux_videodev2_h"
2877
2878 hwupload_cuda_filter_deps="ffnvcodec"
2879 scale_npp_filter_deps="ffnvcodec libnpp"
2880 scale_cuda_filter_deps="cuda_sdk"
2881 thumbnail_cuda_filter_deps="cuda_sdk"
2882
2883 amf_deps_any="libdl LoadLibrary"
2884 nvenc_deps="ffnvcodec"
2885 nvenc_deps_any="libdl LoadLibrary"
2886 nvenc_encoder_deps="nvenc"
2887
2888 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2889 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2890 h264_amf_encoder_deps="amf"
2891 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2892 h264_cuvid_decoder_deps="cuvid"
2893 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2894 h264_mediacodec_decoder_deps="mediacodec"
2895 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2896 h264_mmal_decoder_deps="mmal"
2897 h264_nvenc_encoder_deps="nvenc"
2898 h264_omx_encoder_deps="omx"
2899 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2900 h264_qsv_encoder_select="qsvenc"
2901 h264_rkmpp_decoder_deps="rkmpp"
2902 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2903 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2904 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2905 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2906 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2907 hevc_amf_encoder_deps="amf"
2908 hevc_cuvid_decoder_deps="cuvid"
2909 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2910 hevc_mediacodec_decoder_deps="mediacodec"
2911 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2912 hevc_nvenc_encoder_deps="nvenc"
2913 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2914 hevc_qsv_encoder_select="hevcparse qsvenc"
2915 hevc_rkmpp_decoder_deps="rkmpp"
2916 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2917 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2918 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2919 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2920 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2921 mjpeg_cuvid_decoder_deps="cuvid"
2922 mjpeg_qsv_encoder_deps="libmfx"
2923 mjpeg_qsv_encoder_select="qsvenc"
2924 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2925 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2926 mpeg1_cuvid_decoder_deps="cuvid"
2927 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2928 mpeg2_crystalhd_decoder_select="crystalhd"
2929 mpeg2_cuvid_decoder_deps="cuvid"
2930 mpeg2_mmal_decoder_deps="mmal"
2931 mpeg2_mediacodec_decoder_deps="mediacodec"
2932 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2933 mpeg2_qsv_encoder_select="qsvenc"
2934 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2935 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2936 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2937 mpeg4_crystalhd_decoder_select="crystalhd"
2938 mpeg4_cuvid_decoder_deps="cuvid"
2939 mpeg4_mediacodec_decoder_deps="mediacodec"
2940 mpeg4_mmal_decoder_deps="mmal"
2941 mpeg4_omx_encoder_deps="omx"
2942 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2943 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2944 msmpeg4_crystalhd_decoder_select="crystalhd"
2945 nvenc_h264_encoder_select="h264_nvenc_encoder"
2946 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2947 vc1_crystalhd_decoder_select="crystalhd"
2948 vc1_cuvid_decoder_deps="cuvid"
2949 vc1_mmal_decoder_deps="mmal"
2950 vc1_qsv_decoder_select="qsvdec vc1_parser"
2951 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2952 vp8_cuvid_decoder_deps="cuvid"
2953 vp8_mediacodec_decoder_deps="mediacodec"
2954 vp8_qsv_decoder_select="qsvdec vp8_parser"
2955 vp8_rkmpp_decoder_deps="rkmpp"
2956 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2957 vp8_vaapi_encoder_select="vaapi_encode"
2958 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2959 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2960 vp9_cuvid_decoder_deps="cuvid"
2961 vp9_mediacodec_decoder_deps="mediacodec"
2962 vp9_rkmpp_decoder_deps="rkmpp"
2963 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2964 vp9_vaapi_encoder_select="vaapi_encode"
2965 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2966 wmv3_crystalhd_decoder_select="crystalhd"
2967
2968 # parsers
2969 aac_parser_select="adts_header"
2970 h264_parser_select="golomb h264dsp h264parse"
2971 hevc_parser_select="hevcparse"
2972 mpegaudio_parser_select="mpegaudioheader"
2973 mpegvideo_parser_select="mpegvideo"
2974 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2975 vc1_parser_select="vc1dsp"
2976
2977 # bitstream_filters
2978 aac_adtstoasc_bsf_select="adts_header"
2979 filter_units_bsf_select="cbs"
2980 h264_metadata_bsf_deps="const_nan"
2981 h264_metadata_bsf_select="cbs_h264"
2982 h264_redundant_pps_bsf_select="cbs_h264"
2983 hevc_metadata_bsf_select="cbs_h265"
2984 mjpeg2jpeg_bsf_select="jpegtables"
2985 mpeg2_metadata_bsf_select="cbs_mpeg2"
2986 trace_headers_bsf_select="cbs"
2987
2988 # external libraries
2989 aac_at_decoder_deps="audiotoolbox"
2990 aac_at_decoder_select="aac_adtstoasc_bsf"
2991 ac3_at_decoder_deps="audiotoolbox"
2992 ac3_at_decoder_select="ac3_parser"
2993 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2994 alac_at_decoder_deps="audiotoolbox"
2995 amr_nb_at_decoder_deps="audiotoolbox"
2996 avisynth_deps_any="libdl LoadLibrary"
2997 avisynth_demuxer_deps="avisynth"
2998 avisynth_demuxer_select="riffdec"
2999 eac3_at_decoder_deps="audiotoolbox"
3000 eac3_at_decoder_select="ac3_parser"
3001 gsm_ms_at_decoder_deps="audiotoolbox"
3002 ilbc_at_decoder_deps="audiotoolbox"
3003 mp1_at_decoder_deps="audiotoolbox"
3004 mp2_at_decoder_deps="audiotoolbox"
3005 mp3_at_decoder_deps="audiotoolbox"
3006 mp1_at_decoder_select="mpegaudioheader"
3007 mp2_at_decoder_select="mpegaudioheader"
3008 mp3_at_decoder_select="mpegaudioheader"
3009 pcm_alaw_at_decoder_deps="audiotoolbox"
3010 pcm_mulaw_at_decoder_deps="audiotoolbox"
3011 qdmc_at_decoder_deps="audiotoolbox"
3012 qdm2_at_decoder_deps="audiotoolbox"
3013 aac_at_encoder_deps="audiotoolbox"
3014 aac_at_encoder_select="audio_frame_queue"
3015 alac_at_encoder_deps="audiotoolbox"
3016 alac_at_encoder_select="audio_frame_queue"
3017 ilbc_at_encoder_deps="audiotoolbox"
3018 ilbc_at_encoder_select="audio_frame_queue"
3019 pcm_alaw_at_encoder_deps="audiotoolbox"
3020 pcm_alaw_at_encoder_select="audio_frame_queue"
3021 pcm_mulaw_at_encoder_deps="audiotoolbox"
3022 pcm_mulaw_at_encoder_select="audio_frame_queue"
3023 chromaprint_muxer_deps="chromaprint"
3024 h264_videotoolbox_encoder_deps="pthreads"
3025 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3026 hevc_videotoolbox_encoder_deps="pthreads"
3027 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3028 libaom_av1_decoder_deps="libaom"
3029 libaom_av1_encoder_deps="libaom"
3030 libcelt_decoder_deps="libcelt"
3031 libcodec2_decoder_deps="libcodec2"
3032 libcodec2_encoder_deps="libcodec2"
3033 libfdk_aac_decoder_deps="libfdk_aac"
3034 libfdk_aac_encoder_deps="libfdk_aac"
3035 libfdk_aac_encoder_select="audio_frame_queue"
3036 libgme_demuxer_deps="libgme"
3037 libgsm_decoder_deps="libgsm"
3038 libgsm_encoder_deps="libgsm"
3039 libgsm_ms_decoder_deps="libgsm"
3040 libgsm_ms_encoder_deps="libgsm"
3041 libilbc_decoder_deps="libilbc"
3042 libilbc_encoder_deps="libilbc"
3043 libkvazaar_encoder_deps="libkvazaar"
3044 libmodplug_demuxer_deps="libmodplug"
3045 libmp3lame_encoder_deps="libmp3lame"
3046 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3047 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3048 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3049 libopencore_amrnb_encoder_select="audio_frame_queue"
3050 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3051 libopenh264_decoder_deps="libopenh264"
3052 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3053 libopenh264_encoder_deps="libopenh264"
3054 libopenjpeg_decoder_deps="libopenjpeg"
3055 libopenjpeg_encoder_deps="libopenjpeg"
3056 libopenmpt_demuxer_deps="libopenmpt"
3057 libopus_decoder_deps="libopus"
3058 libopus_encoder_deps="libopus"
3059 libopus_encoder_select="audio_frame_queue"
3060 librsvg_decoder_deps="librsvg"
3061 libshine_encoder_deps="libshine"
3062 libshine_encoder_select="audio_frame_queue"
3063 libspeex_decoder_deps="libspeex"
3064 libspeex_encoder_deps="libspeex"
3065 libspeex_encoder_select="audio_frame_queue"
3066 libtheora_encoder_deps="libtheora"
3067 libtwolame_encoder_deps="libtwolame"
3068 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3069 libvorbis_decoder_deps="libvorbis"
3070 libvorbis_encoder_deps="libvorbis libvorbisenc"
3071 libvorbis_encoder_select="audio_frame_queue"
3072 libvpx_vp8_decoder_deps="libvpx"
3073 libvpx_vp8_encoder_deps="libvpx"
3074 libvpx_vp9_decoder_deps="libvpx"
3075 libvpx_vp9_encoder_deps="libvpx"
3076 libwavpack_encoder_deps="libwavpack"
3077 libwavpack_encoder_select="audio_frame_queue"
3078 libwebp_encoder_deps="libwebp"
3079 libwebp_anim_encoder_deps="libwebp"
3080 libx262_encoder_deps="libx262"
3081 libx264_encoder_deps="libx264"
3082 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3083 libx264rgb_encoder_select="libx264_encoder"
3084 libx265_encoder_deps="libx265"
3085 libxavs_encoder_deps="libxavs"
3086 libxvid_encoder_deps="libxvid"
3087 libzvbi_teletext_decoder_deps="libzvbi"
3088 videotoolbox_suggest="coreservices"
3089 videotoolbox_deps="corefoundation coremedia corevideo"
3090 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3091
3092 # demuxers / muxers
3093 ac3_demuxer_select="ac3_parser"
3094 aiff_muxer_select="iso_media"
3095 asf_demuxer_select="riffdec"
3096 asf_o_demuxer_select="riffdec"
3097 asf_muxer_select="riffenc"
3098 asf_stream_muxer_select="asf_muxer"
3099 avi_demuxer_select="iso_media riffdec exif"
3100 avi_muxer_select="riffenc"
3101 caf_demuxer_select="iso_media riffdec"
3102 caf_muxer_select="iso_media"
3103 dash_muxer_select="mp4_muxer"
3104 dash_demuxer_deps="libxml2"
3105 dirac_demuxer_select="dirac_parser"
3106 dts_demuxer_select="dca_parser"
3107 dtshd_demuxer_select="dca_parser"
3108 dv_demuxer_select="dvprofile"
3109 dv_muxer_select="dvprofile"
3110 dxa_demuxer_select="riffdec"
3111 eac3_demuxer_select="ac3_parser"
3112 f4v_muxer_select="mov_muxer"
3113 fifo_muxer_deps="threads"
3114 flac_demuxer_select="flac_parser"
3115 hds_muxer_select="flv_muxer"
3116 hls_muxer_select="mpegts_muxer"
3117 hls_muxer_suggest="gcrypt openssl"
3118 image2_alias_pix_demuxer_select="image2_demuxer"
3119 image2_brender_pix_demuxer_select="image2_demuxer"
3120 ipod_muxer_select="mov_muxer"
3121 ismv_muxer_select="mov_muxer"
3122 matroska_audio_muxer_select="matroska_muxer"
3123 matroska_demuxer_select="iso_media riffdec"
3124 matroska_demuxer_suggest="bzlib lzo zlib"
3125 matroska_muxer_select="iso_media riffenc"
3126 mmf_muxer_select="riffenc"
3127 mov_demuxer_select="iso_media riffdec"
3128 mov_demuxer_suggest="zlib"
3129 mov_muxer_select="iso_media riffenc rtpenc_chain"
3130 mp3_demuxer_select="mpegaudio_parser"
3131 mp3_muxer_select="mpegaudioheader"
3132 mp4_muxer_select="mov_muxer"
3133 mpegts_demuxer_select="iso_media"
3134 mpegts_muxer_select="adts_muxer latm_muxer"
3135 mpegtsraw_demuxer_select="mpegts_demuxer"
3136 mxf_d10_muxer_select="mxf_muxer"
3137 mxf_opatom_muxer_select="mxf_muxer"
3138 nut_muxer_select="riffenc"
3139 nuv_demuxer_select="riffdec"
3140 oga_muxer_select="ogg_muxer"
3141 ogg_demuxer_select="dirac_parse"
3142 ogv_muxer_select="ogg_muxer"
3143 opus_muxer_select="ogg_muxer"
3144 psp_muxer_select="mov_muxer"
3145 rtp_demuxer_select="sdp_demuxer"
3146 rtp_muxer_select="golomb"
3147 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3148 rtsp_demuxer_select="http_protocol rtpdec"
3149 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3150 sap_demuxer_select="sdp_demuxer"
3151 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3152 sdp_demuxer_select="rtpdec"
3153 smoothstreaming_muxer_select="ismv_muxer"
3154 spdif_demuxer_select="adts_header"
3155 spdif_muxer_select="adts_header"
3156 spx_muxer_select="ogg_muxer"
3157 swf_demuxer_suggest="zlib"
3158 tak_demuxer_select="tak_parser"
3159 tg2_muxer_select="mov_muxer"
3160 tgp_muxer_select="mov_muxer"
3161 vobsub_demuxer_select="mpegps_demuxer"
3162 w64_demuxer_select="wav_demuxer"
3163 w64_muxer_select="wav_muxer"
3164 wav_demuxer_select="riffdec"
3165 wav_muxer_select="riffenc"
3166 webm_muxer_select="iso_media riffenc"
3167 webm_dash_manifest_demuxer_select="matroska_demuxer"
3168 wtv_demuxer_select="mpegts_demuxer riffdec"
3169 wtv_muxer_select="mpegts_muxer riffenc"
3170 xmv_demuxer_select="riffdec"
3171 xwma_demuxer_select="riffdec"
3172
3173 # indevs / outdevs
3174 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3175 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3176 alsa_indev_deps="alsa"
3177 alsa_outdev_deps="alsa"
3178 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3179 avfoundation_indev_suggest="coregraphics applicationservices"
3180 avfoundation_indev_extralibs="-framework Foundation"
3181 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3182 caca_outdev_deps="libcaca"
3183 decklink_deps_any="libdl LoadLibrary"
3184 decklink_indev_deps="decklink threads"
3185 decklink_indev_extralibs="-lstdc++"
3186 decklink_outdev_deps="decklink threads"
3187 decklink_outdev_extralibs="-lstdc++"
3188 libndi_newtek_indev_deps="libndi_newtek"
3189 libndi_newtek_indev_extralibs="-lndi"
3190 libndi_newtek_outdev_deps="libndi_newtek"
3191 libndi_newtek_outdev_extralibs="-lndi"
3192 dshow_indev_deps="IBaseFilter"
3193 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3194 fbdev_indev_deps="linux_fb_h"
3195 fbdev_outdev_deps="linux_fb_h"
3196 gdigrab_indev_deps="CreateDIBSection"
3197 gdigrab_indev_extralibs="-lgdi32"
3198 gdigrab_indev_select="bmp_decoder"
3199 iec61883_indev_deps="libiec61883"
3200 jack_indev_deps="libjack"
3201 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3202 kmsgrab_indev_deps="libdrm"
3203 lavfi_indev_deps="avfilter"
3204 libcdio_indev_deps="libcdio"
3205 libdc1394_indev_deps="libdc1394"
3206 openal_indev_deps="openal"
3207 opengl_outdev_deps="opengl"
3208 oss_indev_deps_any="sys_soundcard_h"
3209 oss_outdev_deps_any="sys_soundcard_h"
3210 pulse_indev_deps="libpulse"
3211 pulse_outdev_deps="libpulse"
3212 sdl2_outdev_deps="sdl2"
3213 sndio_indev_deps="sndio"
3214 sndio_outdev_deps="sndio"
3215 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3216 v4l2_indev_suggest="libv4l2"
3217 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3218 v4l2_outdev_suggest="libv4l2"
3219 vfwcap_indev_deps="vfw32 vfwcap_defines"
3220 xcbgrab_indev_deps="libxcb"
3221 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3222 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3223 xv_outdev_extralibs="-lXv -lX11 -lXext"
3224
3225 # protocols
3226 async_protocol_deps="threads"
3227 bluray_protocol_deps="libbluray"
3228 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3229 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3230 ffrtmpcrypt_protocol_select="tcp_protocol"
3231 ffrtmphttp_protocol_conflict="librtmp_protocol"
3232 ffrtmphttp_protocol_select="http_protocol"
3233 ftp_protocol_select="tcp_protocol"
3234 gopher_protocol_select="network"
3235 http_protocol_select="tcp_protocol"
3236 http_protocol_suggest="zlib"
3237 httpproxy_protocol_select="tcp_protocol"
3238 httpproxy_protocol_suggest="zlib"
3239 https_protocol_select="tls_protocol"
3240 https_protocol_suggest="zlib"
3241 icecast_protocol_select="http_protocol"
3242 librtmp_protocol_deps="librtmp"
3243 librtmpe_protocol_deps="librtmp"
3244 librtmps_protocol_deps="librtmp"
3245 librtmpt_protocol_deps="librtmp"
3246 librtmpte_protocol_deps="librtmp"
3247 libsmbclient_protocol_deps="libsmbclient gplv3"
3248 libssh_protocol_deps="libssh"
3249 libtls_conflict="openssl gnutls"
3250 mmsh_protocol_select="http_protocol"
3251 mmst_protocol_select="network"
3252 libsrt_protocol_deps="libsrt"
3253 libsrt_protocol_select="network"
3254 rtmp_protocol_conflict="librtmp_protocol"
3255 rtmp_protocol_select="tcp_protocol"
3256 rtmp_protocol_suggest="zlib"
3257 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3258 rtmpe_protocol_suggest="zlib"
3259 rtmps_protocol_conflict="librtmp_protocol"
3260 rtmps_protocol_select="tls_protocol"
3261 rtmps_protocol_suggest="zlib"
3262 rtmpt_protocol_select="ffrtmphttp_protocol"
3263 rtmpt_protocol_suggest="zlib"
3264 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3265 rtmpte_protocol_suggest="zlib"
3266 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3267 rtmpts_protocol_suggest="zlib"
3268 rtp_protocol_select="udp_protocol"
3269 schannel_conflict="openssl gnutls libtls"
3270 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3271 sctp_protocol_select="network"
3272 securetransport_conflict="openssl gnutls libtls"
3273 srtp_protocol_select="rtp_protocol srtp"
3274 tcp_protocol_select="network"
3275 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3276 tls_protocol_select="tcp_protocol"
3277 udp_protocol_select="network"
3278 udplite_protocol_select="network"
3279 unix_protocol_deps="sys_un_h"
3280 unix_protocol_select="network"
3281
3282 # filters
3283 afftfilt_filter_deps="avcodec"
3284 afftfilt_filter_select="fft"
3285 afir_filter_deps="avcodec"
3286 afir_filter_select="fft"
3287 amovie_filter_deps="avcodec avformat"
3288 aresample_filter_deps="swresample"
3289 ass_filter_deps="libass"
3290 atempo_filter_deps="avcodec"
3291 atempo_filter_select="rdft"
3292 avgblur_opencl_filter_deps="opencl"
3293 azmq_filter_deps="libzmq"
3294 blackframe_filter_deps="gpl"
3295 boxblur_filter_deps="gpl"
3296 bs2b_filter_deps="libbs2b"
3297 colormatrix_filter_deps="gpl"
3298 convolution_opencl_filter_deps="opencl"
3299 convolve_filter_deps="avcodec"
3300 convolve_filter_select="fft"
3301 coreimage_filter_deps="coreimage appkit"
3302 coreimage_filter_extralibs="-framework OpenGL"
3303 coreimagesrc_filter_deps="coreimage appkit"
3304 coreimagesrc_filter_extralibs="-framework OpenGL"
3305 cover_rect_filter_deps="avcodec avformat gpl"
3306 cropdetect_filter_deps="gpl"
3307 deconvolve_filter_deps="avcodec"
3308 deconvolve_filter_select="fft"
3309 deinterlace_qsv_filter_deps="libmfx"
3310 deinterlace_vaapi_filter_deps="vaapi"
3311 delogo_filter_deps="gpl"
3312 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3313 deshake_filter_select="pixelutils"
3314 drawtext_filter_deps="libfreetype"
3315 drawtext_filter_suggest="libfontconfig libfribidi"
3316 elbg_filter_deps="avcodec"
3317 eq_filter_deps="gpl"
3318 fftfilt_filter_deps="avcodec"
3319 fftfilt_filter_select="rdft"
3320 find_rect_filter_deps="avcodec avformat gpl"
3321 firequalizer_filter_deps="avcodec"
3322 firequalizer_filter_select="rdft"
3323 flite_filter_deps="libflite"
3324 framerate_filter_select="pixelutils"
3325 frei0r_filter_deps="frei0r libdl"
3326 frei0r_src_filter_deps="frei0r libdl"
3327 fspp_filter_deps="gpl"
3328 geq_filter_deps="gpl"
3329 histeq_filter_deps="gpl"
3330 hqdn3d_filter_deps="gpl"
3331 interlace_filter_deps="gpl"
3332 kerndeint_filter_deps="gpl"
3333 ladspa_filter_deps="ladspa libdl"
3334 lv2_filter_deps="lv2"
3335 mcdeint_filter_deps="avcodec gpl"
3336 movie_filter_deps="avcodec avformat"
3337 mpdecimate_filter_deps="gpl"
3338 mpdecimate_filter_select="pixelutils"
3339 mptestsrc_filter_deps="gpl"
3340 negate_filter_deps="lut_filter"
3341 nnedi_filter_deps="gpl"
3342 ocr_filter_deps="libtesseract"
3343 ocv_filter_deps="libopencv"
3344 openclsrc_filter_deps="opencl"
3345 overlay_opencl_filter_deps="opencl"
3346 overlay_qsv_filter_deps="libmfx"
3347 overlay_qsv_filter_select="qsvvpp"
3348 owdenoise_filter_deps="gpl"
3349 pan_filter_deps="swresample"
3350 perspective_filter_deps="gpl"
3351 phase_filter_deps="gpl"
3352 pp7_filter_deps="gpl"
3353 pp_filter_deps="gpl postproc"
3354 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3355 program_opencl_filter_deps="opencl"
3356 pullup_filter_deps="gpl"
3357 removelogo_filter_deps="avcodec avformat swscale"
3358 repeatfields_filter_deps="gpl"
3359 resample_filter_deps="avresample"
3360 rubberband_filter_deps="librubberband"
3361 sab_filter_deps="gpl swscale"
3362 scale2ref_filter_deps="swscale"
3363 scale_filter_deps="swscale"
3364 scale_qsv_filter_deps="libmfx"
3365 select_filter_select="pixelutils"
3366 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3367 showcqt_filter_deps="avcodec avformat swscale"
3368 showcqt_filter_suggest="libfontconfig libfreetype"
3369 showcqt_filter_select="fft"
3370 showfreqs_filter_deps="avcodec"
3371 showfreqs_filter_select="fft"
3372 showspectrum_filter_deps="avcodec"
3373 showspectrum_filter_select="fft"
3374 showspectrumpic_filter_deps="avcodec"
3375 showspectrumpic_filter_select="fft"
3376 signature_filter_deps="gpl avcodec avformat"
3377 smartblur_filter_deps="gpl swscale"
3378 sofalizer_filter_deps="libmysofa avcodec"
3379 sofalizer_filter_select="fft"
3380 spectrumsynth_filter_deps="avcodec"
3381 spectrumsynth_filter_select="fft"
3382 spp_filter_deps="gpl avcodec"
3383 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3384 stereo3d_filter_deps="gpl"
3385 subtitles_filter_deps="avformat avcodec libass"
3386 super2xsai_filter_deps="gpl"
3387 pixfmts_super2xsai_test_deps="super2xsai_filter"
3388 tinterlace_filter_deps="gpl"
3389 tinterlace_merge_test_deps="tinterlace_filter"
3390 tinterlace_pad_test_deps="tinterlace_filter"
3391 tonemap_filter_deps="const_nan"
3392 unsharp_opencl_filter_deps="opencl"
3393 uspp_filter_deps="gpl avcodec"
3394 vaguedenoiser_filter_deps="gpl"
3395 vidstabdetect_filter_deps="libvidstab"
3396 vidstabtransform_filter_deps="libvidstab"
3397 libvmaf_filter_deps="libvmaf pthreads"
3398 zmq_filter_deps="libzmq"
3399 zoompan_filter_deps="swscale"
3400 zscale_filter_deps="libzimg const_nan"
3401 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3402 vpp_qsv_filter_deps="libmfx"
3403 vpp_qsv_filter_select="qsvvpp"
3404
3405 # examples
3406 avio_dir_cmd_deps="avformat avutil"
3407 avio_reading_deps="avformat avcodec avutil"
3408 decode_audio_example_deps="avcodec avutil"
3409 decode_video_example_deps="avcodec avutil"
3410 demuxing_decoding_example_deps="avcodec avformat avutil"
3411 encode_audio_example_deps="avcodec avutil"
3412 encode_video_example_deps="avcodec avutil"
3413 extract_mvs_example_deps="avcodec avformat avutil"
3414 filter_audio_example_deps="avfilter avutil"
3415 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3416 filtering_video_example_deps="avfilter avcodec avformat avutil"
3417 http_multiclient_example_deps="avformat avutil fork"
3418 hw_decode_example_deps="avcodec avformat avutil"
3419 metadata_example_deps="avformat avutil"
3420 muxing_example_deps="avcodec avformat avutil swscale"
3421 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3422 remuxing_example_deps="avcodec avformat avutil"
3423 resampling_audio_example_deps="avutil swresample"
3424 scaling_video_example_deps="avutil swscale"
3425 transcode_aac_example_deps="avcodec avformat swresample"
3426 transcoding_example_deps="avfilter avcodec avformat avutil"
3427 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3428 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3429
3430 # EXTRALIBS_LIST
3431 cpu_init_extralibs="pthreads_extralibs"
3432 cws2fws_extralibs="zlib_extralibs"
3433
3434 # libraries, in linking order
3435 avcodec_deps="avutil"
3436 avcodec_suggest="libm"
3437 avcodec_select="null_bsf"
3438 avdevice_deps="avformat avcodec avutil"
3439 avdevice_suggest="libm"
3440 avfilter_deps="avutil"
3441 avfilter_suggest="libm"
3442 avformat_deps="avcodec avutil"
3443 avformat_suggest="libm network zlib"
3444 avresample_deps="avutil"
3445 avresample_suggest="libm"
3446 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3447 postproc_deps="avutil gpl"
3448 postproc_suggest="libm"
3449 swresample_deps="avutil"
3450 swresample_suggest="libm libsoxr"
3451 swscale_deps="avutil"
3452 swscale_suggest="libm"
3453
3454 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3455 avfilter_extralibs="pthreads_extralibs"
3456 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3457
3458 # programs
3459 ffmpeg_deps="avcodec avfilter avformat swresample"
3460 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3461                null_filter
3462                trim_filter"
3463 ffmpeg_suggest="ole32 psapi shell32"
3464 ffplay_deps="avcodec avformat swscale swresample sdl2"
3465 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3466 ffplay_suggest="shell32"
3467 ffprobe_deps="avcodec avformat"
3468 ffprobe_suggest="shell32"
3469
3470 # documentation
3471 podpages_deps="perl"
3472 manpages_deps="perl pod2man"
3473 htmlpages_deps="perl"
3474 htmlpages_deps_any="makeinfo_html texi2html"
3475 txtpages_deps="perl makeinfo"
3476 doc_deps_any="manpages htmlpages podpages txtpages"
3477
3478 # default parameters
3479
3480 logfile="ffbuild/config.log"
3481
3482 # installation paths
3483 prefix_default="/usr/local"
3484 bindir_default='${prefix}/bin'
3485 datadir_default='${prefix}/share/ffmpeg'
3486 docdir_default='${prefix}/share/doc/ffmpeg'
3487 incdir_default='${prefix}/include'
3488 libdir_default='${prefix}/lib'
3489 mandir_default='${prefix}/share/man'
3490
3491 # toolchain
3492 ar_default="ar"
3493 cc_default="gcc"
3494 cxx_default="g++"
3495 host_cc_default="gcc"
3496 doxygen_default="doxygen"
3497 install="install"
3498 ln_s_default="ln -s -f"
3499 nm_default="nm -g"
3500 pkg_config_default=pkg-config
3501 ranlib_default="ranlib"
3502 strip_default="strip"
3503 version_script='--version-script'
3504 objformat="elf32"
3505 x86asmexe_default="nasm"
3506 windres_default="windres"
3507 nvcc_default="nvcc"
3508 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3509 striptype="direct"
3510
3511 # OS
3512 target_os_default=$(tolower $(uname -s))
3513 host_os=$target_os_default
3514
3515 # machine
3516 if test "$target_os_default" = aix; then
3517     arch_default=$(uname -p)
3518     strip_default="strip -X32_64"
3519 else
3520     arch_default=$(uname -m)
3521 fi
3522 cpu="generic"
3523 intrinsics="none"
3524
3525 # configurable options
3526 enable $PROGRAM_LIST
3527 enable $DOCUMENT_LIST
3528 enable $EXAMPLE_LIST
3529 enable $(filter_out avresample $LIBRARY_LIST)
3530 enable stripping
3531
3532 enable asm
3533 enable debug
3534 enable doc
3535 enable faan faandct faanidct
3536 enable optimizations
3537 enable runtime_cpudetect
3538 enable safe_bitstream_reader
3539 enable static
3540 enable swscale_alpha
3541 enable valgrind_backtrace
3542
3543 sws_max_filter_size_default=256
3544 set_default sws_max_filter_size
3545
3546 # internal components are enabled by default
3547 enable $EXTRALIBS_LIST
3548
3549 # Avoid external, non-system, libraries getting enabled by dependency resolution
3550 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3551
3552 # build settings
3553 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3554 LIBPREF="lib"
3555 LIBSUF=".a"
3556 FULLNAME='$(NAME)$(BUILDSUF)'
3557 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3558 SLIBPREF="lib"
3559 SLIBSUF=".so"
3560 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3561 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3562 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3563 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3564 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3565 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3566 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3567
3568 asflags_filter=echo
3569 cflags_filter=echo
3570 ldflags_filter=echo
3571
3572 AS_C='-c'
3573 AS_O='-o $@'
3574 CC_C='-c'
3575 CC_E='-E -o $@'
3576 CC_O='-o $@'
3577 CXX_C='-c'
3578 CXX_O='-o $@'
3579 OBJCC_C='-c'
3580 OBJCC_E='-E -o $@'
3581 OBJCC_O='-o $@'
3582 X86ASM_O='-o $@'
3583 LD_O='-o $@'
3584 LD_LIB='-l%'
3585 LD_PATH='-L'
3586 HOSTCC_C='-c'
3587 HOSTCC_E='-E -o $@'
3588 HOSTCC_O='-o $@'
3589 HOSTLD_O='-o $@'
3590 NVCC_C='-c'
3591 NVCC_O='-o $@'
3592
3593 host_extralibs='-lm'
3594 host_cflags_filter=echo
3595 host_ldflags_filter=echo
3596
3597 target_path='$(CURDIR)'
3598
3599 # since the object filename is not given with the -MM flag, the compiler
3600 # is only able to print the basename, and we must add the path ourselves
3601 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3602 DEPFLAGS='-MM'
3603
3604 mkdir -p ffbuild
3605
3606 # find source path
3607 if test -f configure; then
3608     source_path=.
3609 else
3610     source_path=$(cd $(dirname "$0"); pwd)
3611     case "$source_path" in
3612         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3613     esac
3614     test -e "$source_path/config.h" &&
3615         die "Out of tree builds are impossible with config.h in source dir."
3616 fi
3617
3618 for v in "$@"; do
3619     r=${v#*=}
3620     l=${v%"$r"}
3621     r=$(sh_quote "$r")
3622     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3623 done
3624
3625 find_things_extern(){
3626     thing=$1
3627     pattern=$2
3628     file=$source_path/$3
3629     out=${4:-$thing}
3630     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3631 }
3632
3633 find_filters_extern(){
3634     file=$source_path/$1
3635     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3636     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3637 }
3638
3639 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3640 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3641 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3642 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3643 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3644 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3645 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3646 CODEC_LIST="
3647     $ENCODER_LIST
3648     $DECODER_LIST
3649 "
3650 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3651 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3652 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3653 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3654
3655 AVCODEC_COMPONENTS_LIST="
3656     $BSF_LIST
3657     $DECODER_LIST
3658     $ENCODER_LIST
3659     $HWACCEL_LIST
3660     $PARSER_LIST
3661 "
3662
3663 AVDEVICE_COMPONENTS_LIST="
3664     $INDEV_LIST
3665     $OUTDEV_LIST
3666 "
3667
3668 AVFILTER_COMPONENTS_LIST="
3669     $FILTER_LIST
3670 "
3671
3672 AVFORMAT_COMPONENTS_LIST="
3673     $DEMUXER_LIST
3674     $MUXER_LIST
3675     $PROTOCOL_LIST
3676 "
3677
3678 ALL_COMPONENTS="
3679     $AVCODEC_COMPONENTS_LIST
3680     $AVDEVICE_COMPONENTS_LIST
3681     $AVFILTER_COMPONENTS_LIST
3682     $AVFORMAT_COMPONENTS_LIST
3683 "
3684
3685 for n in $COMPONENT_LIST; do
3686     v=$(toupper ${n%s})_LIST
3687     eval enable \$$v
3688     eval ${n}_if_any="\$$v"
3689 done
3690
3691 enable $ARCH_EXT_LIST
3692
3693 die_unknown(){
3694     echo "Unknown option \"$1\"."
3695     echo "See $0 --help for available options."
3696     exit 1
3697 }
3698
3699 print_in_columns() {
3700     cols=$(expr $ncols / 24)
3701     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3702 }
3703
3704 show_list() {
3705     suffix=_$1
3706     shift
3707     echo $* | sed s/$suffix//g | print_in_columns
3708     exit 0
3709 }
3710
3711 rand_list(){
3712     IFS=', '
3713     set -- $*
3714     unset IFS
3715     for thing; do
3716         comp=${thing%:*}
3717         prob=${thing#$comp}
3718         prob=${prob#:}
3719         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3720         echo "prob ${prob:-0.5}"
3721         printf '%s\n' $comp
3722     done
3723 }
3724
3725 do_random(){
3726     action=$1
3727     shift
3728     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3729     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3730 }
3731
3732 for opt do
3733     optval="${opt#*=}"
3734     case "$opt" in
3735         --extra-ldflags=*)
3736             add_ldflags $optval
3737         ;;
3738         --extra-ldexeflags=*)
3739             add_ldexeflags $optval
3740         ;;
3741         --extra-ldsoflags=*)
3742             add_ldsoflags $optval
3743         ;;
3744         --extra-ldlibflags=*)
3745             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3746                  "removed in the future. Use --extra-ldsoflags instead."
3747             add_ldsoflags $optval
3748         ;;
3749         --extra-libs=*)
3750             add_extralibs $optval
3751         ;;
3752         --disable-devices)
3753             disable $INDEV_LIST $OUTDEV_LIST
3754         ;;
3755         --enable-debug=*)
3756             debuglevel="$optval"
3757         ;;
3758         --disable-programs)
3759             disable $PROGRAM_LIST
3760         ;;
3761         --disable-everything)
3762             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3763         ;;
3764         --disable-all)
3765             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3766             disable $LIBRARY_LIST $PROGRAM_LIST doc
3767             enable avutil
3768         ;;
3769         --enable-random|--disable-random)
3770             action=${opt%%-random}
3771             do_random ${action#--} $COMPONENT_LIST
3772         ;;
3773         --enable-random=*|--disable-random=*)
3774             action=${opt%%-random=*}
3775             do_random ${action#--} $optval
3776         ;;
3777         --enable-sdl)
3778             enable sdl2
3779         ;;
3780         --enable-*=*|--disable-*=*)
3781             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3782             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3783             eval list=\$$(toupper $thing)_LIST
3784             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3785             list=$(filter "$name" $list)
3786             [ "$list" = "" ] && warn "Option $opt did not match anything"
3787             $action $list
3788         ;;
3789         --enable-yasm|--disable-yasm)
3790             warn "The ${opt} option is only provided for compatibility and will be\n"\
3791                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3792             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3793         ;;
3794         --yasmexe=*)
3795             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3796                  "removed in the future. Use --x86asmexe instead."
3797             x86asmexe="$optval"
3798         ;;
3799         --enable-?*|--disable-?*)
3800             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3801             if is_in $option $COMPONENT_LIST; then
3802                 test $action = disable && action=unset
3803                 eval $action \$$(toupper ${option%s})_LIST
3804             elif is_in $option $CMDLINE_SELECT; then
3805                 $action $option
3806             else
3807                 die_unknown $opt
3808             fi
3809         ;;
3810         --list-*)
3811             NAME="${opt#--list-}"
3812             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3813             NAME=${NAME%s}
3814             eval show_list $NAME \$$(toupper $NAME)_LIST
3815         ;;
3816         --help|-h) show_help
3817         ;;
3818         --quiet|-q) quiet=yes
3819         ;;
3820         --fatal-warnings) enable fatal_warnings
3821         ;;
3822         --libfuzzer=*)
3823             libfuzzer_path="$optval"
3824         ;;
3825         *)
3826             optname="${opt%%=*}"
3827             optname="${optname#--}"
3828             optname=$(echo "$optname" | sed 's/-/_/g')
3829             if is_in $optname $CMDLINE_SET; then
3830                 eval $optname='$optval'
3831             elif is_in $optname $CMDLINE_APPEND; then
3832                 append $optname "$optval"
3833             else
3834                 die_unknown $opt
3835             fi
3836         ;;
3837     esac
3838 done
3839
3840 for e in $env; do
3841     eval "export $e"
3842 done
3843
3844 if disabled autodetect; then
3845
3846     # Unless iconv is explicitely disabled by the user, we still want to probe
3847     # for the iconv from the libc.
3848     disabled iconv || enable libc_iconv
3849
3850     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3851     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3852 fi
3853 # Mark specifically enabled, but normally autodetected libraries as requested.
3854 for lib in $AUTODETECT_LIBS; do
3855     enabled $lib && request $lib
3856 done
3857 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3858 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3859 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3860
3861 disabled logging && logfile=/dev/null
3862
3863 # command line configuration sanity checks
3864
3865 # we need to build at least one lib type
3866 if ! enabled_any static shared; then
3867     cat <<EOF
3868 At least one library type must be built.
3869 Specify --enable-static to build the static libraries or --enable-shared to
3870 build the shared libraries as well. To only build the shared libraries specify
3871 --disable-static in addition to --enable-shared.
3872 EOF
3873     exit 1
3874 fi
3875
3876 die_license_disabled() {
3877     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3878 }
3879
3880 die_license_disabled_gpl() {
3881     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3882 }
3883
3884 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3885 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3886
3887 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3888 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3889
3890 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3891
3892 if enabled nonfree; then
3893     license="nonfree and unredistributable"
3894 elif enabled gplv3; then
3895     license="GPL version 3 or later"
3896 elif enabled lgplv3; then
3897     license="LGPL version 3 or later"
3898 elif enabled gpl; then
3899     license="GPL version 2 or later"
3900 else
3901     license="LGPL version 2.1 or later"
3902 fi
3903
3904 enabled_all gnutls openssl &&
3905     die "GnuTLS and OpenSSL must not be enabled at the same time."
3906
3907 # Disable all the library-specific components if the library itself
3908 # is disabled, see AVCODEC_LIST and following _LIST variables.
3909
3910 disable_components(){
3911     disabled ${1} && disable $(
3912         eval components="\$$(toupper ${1})_COMPONENTS"
3913         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3914     )
3915 }
3916
3917 map 'disable_components $v' $LIBRARY_LIST
3918
3919 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3920 set >> $logfile
3921
3922 test -n "$valgrind" && toolchain="valgrind-memcheck"
3923
3924 enabled ossfuzz && {
3925     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3926     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3927 }
3928
3929 case "$toolchain" in
3930     *-asan)
3931         cc_default="${toolchain%-asan}"
3932         add_cflags  -fsanitize=address
3933         add_ldflags -fsanitize=address
3934     ;;
3935     *-msan)
3936         cc_default="${toolchain%-msan}"
3937         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3938         add_ldflags -fsanitize=memory
3939     ;;
3940     *-tsan)
3941         cc_default="${toolchain%-tsan}"
3942         add_cflags  -fsanitize=thread -fPIE
3943         add_ldflags -fsanitize=thread -pie
3944         case "$toolchain" in
3945             gcc-tsan)
3946                 add_cflags  -fPIC
3947                 add_ldflags -fPIC
3948                 ;;
3949         esac
3950     ;;
3951     *-usan)
3952         cc_default="${toolchain%-usan}"
3953         add_cflags  -fsanitize=undefined
3954         add_ldflags -fsanitize=undefined
3955     ;;
3956     valgrind-*)
3957         target_exec_default="valgrind"
3958         case "$toolchain" in
3959             valgrind-massif)
3960                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3961                 ;;
3962             valgrind-memcheck)
3963                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3964                 ;;
3965         esac
3966     ;;
3967     msvc)
3968         # Check whether the current MSVC version needs the C99 converter.
3969         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3970         # support enough of C99 to build ffmpeg. Default to the new
3971         # behaviour if the regexp was unable to match anything, since this
3972         # successfully parses the version number of existing supported
3973         # versions that require the converter (MSVC 2010 and 2012).
3974         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3975         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3976             cc_default="cl"
3977             cxx_default="cl"
3978         else
3979             cc_default="c99wrap cl"
3980             cxx_default="c99wrap cl"
3981         fi
3982         ld_default="$source_path/compat/windows/mslink"
3983         nm_default="dumpbin -symbols"
3984         ar_default="lib"
3985         case "$arch" in
3986         aarch64|arm64)
3987             as_default="armasm64"
3988             ;;
3989         arm*)
3990             as_default="armasm"
3991             ;;
3992         esac
3993         target_os_default="win32"
3994         # Use a relative path for TMPDIR. This makes sure all the
3995         # ffconf temp files are written with a relative path, avoiding
3996         # issues with msys/win32 path conversion for MSVC parameters
3997         # such as -Fo<file> or -out:<file>.
3998         TMPDIR=.
3999     ;;
4000     icl)
4001         cc_default="icl"
4002         ld_default="xilink"
4003         nm_default="dumpbin -symbols"
4004         ar_default="xilib"
4005         target_os_default="win32"
4006         TMPDIR=.
4007     ;;
4008     gcov)
4009         add_cflags  -fprofile-arcs -ftest-coverage
4010         add_ldflags -fprofile-arcs -ftest-coverage
4011     ;;
4012     llvm-cov)
4013         add_cflags -fprofile-arcs -ftest-coverage
4014         add_ldflags --coverage
4015     ;;
4016     hardened)
4017         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4018         add_cflags   -fno-strict-overflow -fstack-protector-all
4019         add_ldflags  -Wl,-z,relro -Wl,-z,now
4020         add_cflags   -fPIE
4021         add_ldexeflags -fPIE -pie
4022     ;;
4023     ?*)
4024         die "Unknown toolchain $toolchain"
4025     ;;
4026 esac
4027
4028 if test -n "$cross_prefix"; then
4029     test -n "$arch" && test -n "$target_os" ||
4030         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4031     enable cross_compile
4032 fi
4033
4034 ar_default="${cross_prefix}${ar_default}"
4035 cc_default="${cross_prefix}${cc_default}"
4036 cxx_default="${cross_prefix}${cxx_default}"
4037 nm_default="${cross_prefix}${nm_default}"
4038 pkg_config_default="${cross_prefix}${pkg_config_default}"
4039 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4040     ranlib_default="${cross_prefix}${ranlib_default} -D"
4041 else
4042     ranlib_default="${cross_prefix}${ranlib_default}"
4043 fi
4044 strip_default="${cross_prefix}${strip_default}"
4045 windres_default="${cross_prefix}${windres_default}"
4046
4047 sysinclude_default="${sysroot}/usr/include"
4048
4049 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4050     target_exec target_os x86asmexe nvcc
4051 enabled cross_compile || host_cc_default=$cc
4052 set_default host_cc
4053
4054 pkg_config_fail_message=""
4055 if ! $pkg_config --version >/dev/null 2>&1; then
4056     warn "$pkg_config not found, library detection may fail."
4057     pkg_config=false
4058 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4059     pkg_config_fail_message="
4060 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4061 fi
4062
4063 if test $doxygen != $doxygen_default && \
4064   ! $doxygen --version >/dev/null 2>&1; then
4065     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4066 fi
4067
4068 exesuf() {
4069     case $1 in
4070         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4071     esac
4072 }
4073
4074 EXESUF=$(exesuf $target_os)
4075 HOSTEXESUF=$(exesuf $host_os)
4076
4077 # set temporary file name
4078 : ${TMPDIR:=$TEMPDIR}
4079 : ${TMPDIR:=$TMP}
4080 : ${TMPDIR:=/tmp}
4081
4082 if [ -n "$tempprefix" ] ; then
4083     mktemp(){
4084         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4085         echo "$tmpname"
4086         mkdir "$tmpname"
4087     }
4088 elif ! test_cmd mktemp -u XXXXXX; then
4089     # simple replacement for missing mktemp
4090     # NOT SAFE FOR GENERAL USE
4091     mktemp(){
4092         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4093         echo "$tmpname"
4094         mkdir "$tmpname"
4095     }
4096 fi
4097
4098 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4099     die "Unable to create temporary directory in $TMPDIR."
4100
4101 tmpfile(){
4102     tmp="${FFTMPDIR}/test"$2
4103     (set -C; exec > $tmp) 2> /dev/null ||
4104         die "Unable to create temporary file in $FFTMPDIR."
4105     eval $1=$tmp
4106 }
4107
4108 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4109 trap 'exit 2' INT
4110
4111 tmpfile TMPASM .asm
4112 tmpfile TMPC   .c
4113 tmpfile TMPCPP .cpp
4114 tmpfile TMPE   $EXESUF
4115 tmpfile TMPH   .h
4116 tmpfile TMPM   .m
4117 tmpfile TMPO   .o
4118 tmpfile TMPS   .S
4119 tmpfile TMPSH  .sh
4120 tmpfile TMPV   .ver
4121
4122 unset -f mktemp
4123
4124 chmod +x $TMPE
4125
4126 # make sure we can execute files in $TMPDIR
4127 cat > $TMPSH 2>> $logfile <<EOF
4128 #! /bin/sh
4129 EOF
4130 chmod +x $TMPSH >> $logfile 2>&1
4131 if ! $TMPSH >> $logfile 2>&1; then
4132     cat <<EOF
4133 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4134 variable to another directory and make sure that it is not mounted noexec.
4135 EOF
4136     die "Sanity test failed."
4137 fi
4138
4139 armasm_flags(){
4140     for flag; do
4141         case $flag in
4142             # Filter out MSVC cl.exe options from cflags that shouldn't
4143             # be passed to gas-preprocessor
4144             -M[TD]*)                                            ;;
4145             *)                  echo $flag                      ;;
4146         esac
4147    done
4148 }
4149
4150 cparser_flags(){
4151     for flag; do
4152         case $flag in
4153             -Wno-switch)             echo -Wno-switch-enum ;;
4154             -Wno-format-zero-length) ;;
4155             -Wdisabled-optimization) ;;
4156             -Wno-pointer-sign)       echo -Wno-other ;;
4157             *)                       echo $flag ;;
4158         esac
4159     done
4160 }
4161
4162 msvc_common_flags(){
4163     for flag; do
4164         case $flag in
4165             # In addition to specifying certain flags under the compiler
4166             # specific filters, they must be specified here as well or else the
4167             # generic catch all at the bottom will print the original flag.
4168             -Wall)                ;;
4169             -Wextra)              ;;
4170             -std=c99)             ;;
4171             # Common flags
4172             -fomit-frame-pointer) ;;
4173             -g)                   echo -Z7 ;;
4174             -fno-math-errno)      ;;
4175             -fno-common)          ;;
4176             -fno-signed-zeros)    ;;
4177             -fPIC)                ;;
4178             -mthumb)              ;;
4179             -march=*)             ;;
4180             -lz)                  echo zlib.lib ;;
4181             -lx264)               echo libx264.lib ;;
4182             -lstdc++)             ;;
4183             -l*)                  echo ${flag#-l}.lib ;;
4184             -LARGEADDRESSAWARE)   echo $flag ;;
4185             -L*)                  echo -libpath:${flag#-L} ;;
4186             *)                    echo $flag ;;
4187         esac
4188     done
4189 }
4190
4191 msvc_flags(){
4192     msvc_common_flags "$@"
4193     for flag; do
4194         case $flag in
4195             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4196                                        -wd4554 ;;
4197             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4198                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4199                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4200                                        -wd4307 \
4201                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4202         esac
4203     done
4204 }
4205
4206 icl_flags(){
4207     msvc_common_flags "$@"
4208     for flag; do
4209         case $flag in
4210             # Despite what Intel's documentation says -Wall, which is supported
4211             # on Windows, does enable remarks so disable them here.
4212             -Wall)                echo $flag -Qdiag-disable:remark ;;
4213             -std=c99)             echo -Qstd=c99 ;;
4214             -flto)                echo -ipo ;;
4215         esac
4216     done
4217 }
4218
4219 icc_flags(){
4220     for flag; do
4221         case $flag in
4222             -flto)                echo -ipo ;;
4223             *)                    echo $flag ;;
4224         esac
4225     done
4226 }
4227
4228 suncc_flags(){
4229     for flag; do
4230         case $flag in
4231             -march=*|-mcpu=*)
4232                 case "${flag#*=}" in
4233                     native)                   echo -xtarget=native       ;;
4234                     v9|niagara)               echo -xarch=sparc          ;;
4235                     ultrasparc)               echo -xarch=sparcvis       ;;
4236                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4237                     i586|pentium)             echo -xchip=pentium        ;;
4238                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4239                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4240                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4241                     pentium4*)          echo -xtarget=pentium4           ;;
4242                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4243                     *-sse3)             echo -xarch=sse3                 ;;
4244                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4245                     bonnell)                   echo -xarch=ssse3         ;;
4246                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4247                     westmere)                  echo -xtarget=westmere    ;;
4248                     silvermont)                echo -xarch=sse4_2        ;;
4249                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4250                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4251                                                echo -xarch=avx           ;;
4252                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4253                     btver1)                    echo -xarch=amdsse4a      ;;
4254                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4255                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4256                     k8|opteron|athlon64|athlon-fx)
4257                                                echo -xarch=sse2a         ;;
4258                     athlon*)                   echo -xarch=pentium_proa  ;;
4259                 esac
4260                 ;;
4261             -std=c99)             echo -xc99              ;;
4262             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4263             -fPIC)                echo -KPIC -xcode=pic32 ;;
4264             -W*,*)                echo $flag              ;;
4265             -f*-*|-W*|-mimpure-text)                      ;;
4266             -shared)              echo -G                 ;;
4267             *)                    echo $flag              ;;
4268         esac
4269     done
4270 }
4271
4272 probe_cc(){
4273     pfx=$1
4274     _cc=$2
4275     first=$3
4276
4277     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4278     unset _ld_o _ldflags _ld_lib _ld_path
4279     unset _depflags _DEPCMD _DEPFLAGS
4280     _flags_filter=echo
4281
4282     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4283         true # no-op to avoid reading stdin in following checks
4284     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4285         _type=llvm_gcc
4286         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4287         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4288         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4289         _cflags_speed='-O3'
4290         _cflags_size='-Os'
4291     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4292         _type=gcc
4293         gcc_version=$($_cc --version | head -n1)
4294         gcc_basever=$($_cc -dumpversion)
4295         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4296         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4297         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4298         case $gcc_basever in
4299             2) ;;
4300             2.*) ;;
4301             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4302         esac
4303         if [ "$first" = true ]; then
4304             case $gcc_basever in
4305                 4.2*)
4306                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4307             esac
4308         fi
4309         _cflags_speed='-O3'
4310         _cflags_size='-Os'
4311     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4312         _type=icc
4313         _ident=$($_cc --version | head -n1)
4314         _depflags='-MMD'
4315         _cflags_speed='-O3'
4316         _cflags_size='-Os'
4317         _cflags_noopt='-O1'
4318         _flags_filter=icc_flags
4319     elif $_cc -v 2>&1 | grep -q xlc; then
4320         _type=xlc
4321         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4322         _cflags_speed='-O5'
4323         _cflags_size='-O5 -qcompact'
4324     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4325         test -d "$sysroot" || die "No valid sysroot specified."
4326         _type=armcc
4327         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4328         armcc_conf="$PWD/armcc.conf"
4329         $_cc --arm_linux_configure                 \
4330              --arm_linux_config_file="$armcc_conf" \
4331              --configure_sysroot="$sysroot"        \
4332              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4333              die "Error creating armcc configuration file."
4334         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4335         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4336         as_default="${cross_prefix}gcc"
4337         _depflags='-MMD'
4338         _cflags_speed='-O3'
4339         _cflags_size='-Os'
4340     elif $_cc -v 2>&1 | grep -q clang; then
4341         _type=clang
4342         _ident=$($_cc --version 2>/dev/null | head -n1)
4343         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4344         _cflags_speed='-O3'
4345         _cflags_size='-Oz'
4346     elif $_cc -V 2>&1 | grep -q Sun; then
4347         _type=suncc
4348         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4349         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4350         _DEPFLAGS='-xM1 -xc99'
4351         _ldflags='-std=c99'
4352         _cflags_speed='-O5'
4353         _cflags_size='-O5 -xspace'
4354         _flags_filter=suncc_flags
4355     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4356         _type=pathscale
4357         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4358         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4359         _cflags_speed='-O2'
4360         _cflags_size='-Os'
4361         _flags_filter='filter_out -Wdisabled-optimization'
4362     elif $_cc -v 2>&1 | grep -q Open64; then
4363         _type=open64
4364         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4365         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4366         _cflags_speed='-O2'
4367         _cflags_size='-Os'
4368         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4369     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4370         _type=armasm
4371         _ident=$($_cc | head -n1)
4372         # 4509: "This form of conditional instruction is deprecated"
4373         _flags="-nologo -ignore 4509"
4374         _flags_filter=armasm_flags
4375     elif $_cc 2>&1 | grep -q Intel; then
4376         _type=icl
4377         _ident=$($_cc 2>&1 | head -n1)
4378         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4379         # Not only is O3 broken on 13.x+ but it is slower on all previous
4380         # versions (tested) as well.
4381         _cflags_speed="-O2"
4382         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4383         if $_cc 2>&1 | grep -q Linker; then
4384             _ld_o='-out:$@'
4385         else
4386             _ld_o='-Fe$@'
4387         fi
4388         _cc_o='-Fo$@'
4389         _cc_e='-P'
4390         _flags_filter=icl_flags
4391         _ld_lib='lib%.a'
4392         _ld_path='-libpath:'
4393         # -Qdiag-error to make icl error when seeing certain unknown arguments
4394         _flags='-nologo -Qdiag-error:4044,10157'
4395         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4396         # with MSVC which enables it by default.
4397         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4398         disable stripping
4399     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4400         # lld can emulate multiple different linkers; in ms link.exe mode,
4401         # the -? parameter gives the help output which contains an identifyable
4402         # string, while it gives an error in other modes.
4403         _type=lld-link
4404         # The link.exe mode doesn't have a switch for getting the version,
4405         # but we can force it back to gnu mode and get the version from there.
4406         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4407         _ld_o='-out:$@'
4408         _flags_filter=msvc_flags
4409         _ld_lib='lib%.a'
4410         _ld_path='-libpath:'
4411     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4412         _type=msvc
4413         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4414         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4415         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4416         _cflags_speed="-O2"
4417         _cflags_size="-O1"
4418         _cflags_noopt="-O1"
4419         if $_cc -nologo- 2>&1 | grep -q Linker; then
4420             _ld_o='-out:$@'
4421         else
4422             _ld_o='-Fe$@'
4423         fi
4424         _cc_o='-Fo$@'
4425         _cc_e='-P -Fi$@'
4426         _flags_filter=msvc_flags
4427         _ld_lib='lib%.a'
4428         _ld_path='-libpath:'
4429         _flags='-nologo'
4430         disable stripping
4431     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4432         _type=cparser
4433         _ident=$($_cc --version | head -n1)
4434         _depflags='-MMD'
4435         _cflags_speed='-O4'
4436         _cflags_size='-O2'
4437         _flags_filter=cparser_flags
4438     fi
4439
4440     eval ${pfx}_type=\$_type
4441     eval ${pfx}_ident=\$_ident
4442 }
4443
4444 set_ccvars(){
4445     eval ${1}_C=\${_cc_c-\${${1}_C}}
4446     eval ${1}_E=\${_cc_e-\${${1}_E}}
4447     eval ${1}_O=\${_cc_o-\${${1}_O}}
4448
4449     if [ -n "$_depflags" ]; then
4450         eval ${1}_DEPFLAGS=\$_depflags
4451     else
4452         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4453         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4454         eval DEP${1}FLAGS=\$_flags
4455     fi
4456 }
4457
4458 probe_cc cc "$cc" "true"
4459 cflags_filter=$_flags_filter
4460 cflags_speed=$_cflags_speed
4461 cflags_size=$_cflags_size
4462 cflags_noopt=$_cflags_noopt
4463 add_cflags $_flags $_cflags
4464 cc_ldflags=$_ldflags
4465 set_ccvars CC
4466 set_ccvars CXX
4467
4468 probe_cc hostcc "$host_cc"
4469 host_cflags_filter=$_flags_filter
4470 host_cflags_speed=$_cflags_speed
4471 add_host_cflags  $_flags $_cflags
4472 set_ccvars HOSTCC
4473
4474 test -n "$cc_type" && enable $cc_type ||
4475     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4476
4477 : ${as_default:=$cc}
4478 : ${objcc_default:=$cc}
4479 : ${dep_cc_default:=$cc}
4480 : ${ld_default:=$cc}
4481 : ${host_ld_default:=$host_cc}
4482 set_default ar as objcc dep_cc ld ln_s host_ld windres
4483
4484 probe_cc as "$as"
4485 asflags_filter=$_flags_filter
4486 add_asflags $_flags $_cflags
4487 set_ccvars AS
4488
4489 probe_cc objcc "$objcc"
4490 objcflags_filter=$_flags_filter
4491 add_objcflags $_flags $_cflags
4492 set_ccvars OBJC
4493
4494 probe_cc ld "$ld"
4495 ldflags_filter=$_flags_filter
4496 add_ldflags $_flags $_ldflags
4497 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4498 LD_O=${_ld_o-$LD_O}
4499 LD_LIB=${_ld_lib-$LD_LIB}
4500 LD_PATH=${_ld_path-$LD_PATH}
4501
4502 probe_cc hostld "$host_ld"
4503 host_ldflags_filter=$_flags_filter
4504 add_host_ldflags $_flags $_ldflags
4505 HOSTLD_O=${_ld_o-$HOSTLD_O}
4506
4507 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4508     probe_cc depcc "$dep_cc"
4509     CCDEP=${_DEPCMD:-$DEPCMD}
4510     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4511     DEPCCFLAGS=$_flags
4512 fi
4513
4514 if $ar 2>&1 | grep -q Microsoft; then
4515     arflags="-nologo"
4516     ar_o='-out:$@'
4517 elif $ar 2>&1 | grep -q "\[D\] "; then
4518     arflags="rcD"
4519     ar_o='$@'
4520 else
4521     arflags="rc"
4522     ar_o='$@'
4523 fi
4524
4525 add_cflags $extra_cflags
4526 add_cxxflags $extra_cxxflags
4527 add_objcflags $extra_objcflags
4528 add_asflags $extra_cflags
4529
4530 if test -n "$sysroot"; then
4531     case "$cc_type" in
4532         gcc|llvm_gcc|clang)
4533             add_cppflags --sysroot="$sysroot"
4534             add_ldflags --sysroot="$sysroot"
4535         ;;
4536     esac
4537 fi
4538
4539 if test "$cpu" = host; then
4540     enabled cross_compile &&
4541         die "--cpu=host makes no sense when cross-compiling."
4542
4543     case "$cc_type" in
4544         gcc|llvm_gcc)
4545             check_native(){
4546                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4547                 sed -n "/cc1.*$1=/{
4548                             s/.*$1=\\([^ ]*\\).*/\\1/
4549                             p
4550                             q
4551                         }" $TMPE
4552             }
4553             cpu=$(check_native -march || check_native -mcpu)
4554         ;;
4555         clang)
4556             check_native(){
4557                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4558                 sed -n "/cc1.*-target-cpu /{
4559                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4560                             p
4561                             q
4562                         }" $TMPE
4563             }
4564             cpu=$(check_native -march)
4565         ;;
4566     esac
4567
4568     test "${cpu:-host}" = host &&
4569         die "--cpu=host not supported with compiler $cc"
4570 fi
4571
4572 # Deal with common $arch aliases
4573 case "$arch" in
4574     aarch64|arm64)
4575         arch="aarch64"
4576     ;;
4577     arm*|iPad*|iPhone*)
4578         arch="arm"
4579     ;;
4580     mips*|IP*)
4581         case "$arch" in
4582         *el)
4583             add_cppflags -EL
4584             add_ldflags -EL
4585         ;;
4586         *eb)
4587             add_cppflags -EB
4588             add_ldflags -EB
4589         ;;
4590         esac
4591         arch="mips"
4592     ;;
4593     parisc*|hppa*)
4594         arch="parisc"
4595     ;;
4596     "Power Macintosh"|ppc*|powerpc*)
4597         arch="ppc"
4598     ;;
4599     s390|s390x)
4600         arch="s390"
4601     ;;
4602     sh4|sh)
4603         arch="sh4"
4604     ;;
4605     sun4*|sparc*)
4606         arch="sparc"
4607     ;;
4608     tilegx|tile-gx)
4609         arch="tilegx"
4610     ;;
4611     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4612         arch="x86"
4613     ;;
4614 esac
4615
4616 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4617 enable $arch
4618
4619 # Add processor-specific flags
4620 if enabled aarch64; then
4621
4622     case $cpu in
4623         armv*)
4624             cpuflags="-march=$cpu"
4625         ;;
4626         *)
4627             cpuflags="-mcpu=$cpu"
4628         ;;
4629     esac
4630
4631 elif enabled alpha; then
4632
4633     cpuflags="-mcpu=$cpu"
4634
4635 elif enabled arm; then
4636
4637     check_arm_arch() {
4638         test_cpp_condition stddef.h \
4639             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4640             $cpuflags
4641     }
4642
4643     probe_arm_arch() {
4644         if   check_arm_arch 4;        then echo armv4
4645         elif check_arm_arch 4T;       then echo armv4t
4646         elif check_arm_arch 5;        then echo armv5
4647         elif check_arm_arch 5E;       then echo armv5e
4648         elif check_arm_arch 5T;       then echo armv5t
4649         elif check_arm_arch 5TE;      then echo armv5te
4650         elif check_arm_arch 5TEJ;     then echo armv5te
4651         elif check_arm_arch 6;        then echo armv6
4652         elif check_arm_arch 6J;       then echo armv6j
4653         elif check_arm_arch 6K;       then echo armv6k
4654         elif check_arm_arch 6Z;       then echo armv6z
4655         elif check_arm_arch 6KZ;      then echo armv6zk
4656         elif check_arm_arch 6ZK;      then echo armv6zk
4657         elif check_arm_arch 6T2;      then echo armv6t2
4658         elif check_arm_arch 7;        then echo armv7
4659         elif check_arm_arch 7A  7_A;  then echo armv7-a
4660         elif check_arm_arch 7S;       then echo armv7-a
4661         elif check_arm_arch 7R  7_R;  then echo armv7-r
4662         elif check_arm_arch 7M  7_M;  then echo armv7-m
4663         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4664         elif check_arm_arch 8A  8_A;  then echo armv8-a
4665         fi
4666     }
4667
4668     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4669
4670     case $cpu in
4671         armv*)
4672             cpuflags="-march=$cpu"
4673             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4674         ;;
4675         *)
4676             cpuflags="-mcpu=$cpu"
4677             case $cpu in
4678                 cortex-a*)                               subarch=armv7a  ;;
4679                 cortex-r*)                               subarch=armv7r  ;;
4680                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4681                 arm11*)                                  subarch=armv6   ;;
4682                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4683                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4684                 *)                             subarch=$(probe_arm_arch) ;;
4685             esac
4686         ;;
4687     esac
4688
4689     case "$subarch" in
4690         armv5t*)    enable fast_clz                ;;
4691         armv[6-8]*)
4692             enable fast_clz
4693             disabled fast_unaligned || enable fast_unaligned
4694             ;;
4695     esac
4696
4697 elif enabled avr32; then
4698
4699     case $cpu in
4700         ap7[02]0[0-2])
4701             subarch="avr32_ap"
4702             cpuflags="-mpart=$cpu"
4703         ;;
4704         ap)
4705             subarch="avr32_ap"
4706             cpuflags="-march=$cpu"
4707         ;;
4708         uc3[ab]*)
4709             subarch="avr32_uc"
4710             cpuflags="-mcpu=$cpu"
4711         ;;
4712         uc)
4713             subarch="avr32_uc"
4714             cpuflags="-march=$cpu"
4715         ;;
4716     esac
4717
4718 elif enabled bfin; then
4719
4720     cpuflags="-mcpu=$cpu"
4721
4722 elif enabled mips; then
4723
4724     cpuflags="-march=$cpu"
4725
4726     if [ "$cpu" != "generic" ]; then
4727         disable mips32r2
4728         disable mips32r5
4729         disable mips64r2
4730         disable mips32r6
4731         disable mips64r6
4732         disable loongson2
4733         disable loongson3
4734
4735         case $cpu in
4736             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4737                 enable mips32r2
4738                 disable msa
4739             ;;
4740             p5600|i6400|p6600)
4741                 disable mipsdsp
4742                 disable mipsdspr2
4743             ;;
4744             loongson*)
4745                 enable loongson2
4746                 enable loongson3
4747                 enable local_aligned
4748                 enable simd_align_16
4749                 enable fast_64bit
4750                 enable fast_clz
4751                 enable fast_cmov
4752                 enable fast_unaligned
4753                 disable aligned_stack
4754                 disable mipsfpu
4755                 disable mipsdsp
4756                 disable mipsdspr2
4757                 case $cpu in
4758                     loongson3*)
4759                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4760                     ;;
4761                     loongson2e)
4762                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4763                     ;;
4764                     loongson2f)
4765                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4766                     ;;
4767                 esac
4768             ;;
4769             *)
4770                 # Unknown CPU. Disable everything.
4771                 warn "unknown CPU. Disabling all MIPS optimizations."
4772                 disable mipsfpu
4773                 disable mipsdsp
4774                 disable mipsdspr2
4775                 disable msa
4776                 disable mmi
4777             ;;
4778         esac
4779
4780         case $cpu in
4781             24kc)
4782                 disable mipsfpu
4783                 disable mipsdsp
4784                 disable mipsdspr2
4785             ;;
4786             24kf*)
4787                 disable mipsdsp
4788                 disable mipsdspr2
4789             ;;
4790             24kec|34kc|1004kc)
4791                 disable mipsfpu
4792                 disable mipsdspr2
4793             ;;
4794             24kef*|34kf*|1004kf*)
4795                 disable mipsdspr2
4796             ;;
4797             74kc)
4798                 disable mipsfpu
4799             ;;
4800             p5600)
4801                 enable mips32r5
4802                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4803             ;;
4804             i6400)
4805                 enable mips64r6
4806                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4807             ;;
4808             p6600)
4809                 enable mips64r6
4810                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4811             ;;
4812         esac
4813     else
4814         # We do not disable anything. Is up to the user to disable the unwanted features.
4815         warn 'generic cpu selected'
4816     fi
4817
4818 elif enabled ppc; then
4819
4820     disable ldbrx
4821
4822     case $(tolower $cpu) in
4823         601|ppc601|powerpc601)
4824             cpuflags="-mcpu=601"
4825             disable altivec
4826         ;;
4827         603*|ppc603*|powerpc603*)
4828             cpuflags="-mcpu=603"
4829             disable altivec
4830         ;;
4831         604*|ppc604*|powerpc604*)
4832             cpuflags="-mcpu=604"
4833             disable altivec
4834         ;;
4835         g3|75*|ppc75*|powerpc75*)
4836             cpuflags="-mcpu=750"
4837             disable altivec
4838         ;;
4839         g4|745*|ppc745*|powerpc745*)
4840             cpuflags="-mcpu=7450"
4841             disable vsx
4842         ;;
4843         74*|ppc74*|powerpc74*)
4844             cpuflags="-mcpu=7400"
4845             disable vsx
4846         ;;
4847         g5|970|ppc970|powerpc970)
4848             cpuflags="-mcpu=970"
4849             disable vsx
4850         ;;
4851         power[3-6]*)
4852             cpuflags="-mcpu=$cpu"
4853             disable vsx
4854         ;;
4855         power[7-8]*)
4856             cpuflags="-mcpu=$cpu"
4857         ;;
4858         cell)
4859             cpuflags="-mcpu=cell"
4860             enable ldbrx
4861             disable vsx
4862         ;;
4863         e500mc)
4864             cpuflags="-mcpu=e500mc"
4865             disable altivec
4866         ;;
4867         e500v2)
4868             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4869             disable altivec
4870             disable dcbzl
4871         ;;
4872         e500)
4873             cpuflags="-mcpu=8540 -mhard-float"
4874             disable altivec
4875             disable dcbzl
4876         ;;
4877     esac
4878
4879 elif enabled sparc; then
4880
4881     case $cpu in
4882         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4883             cpuflags="-mcpu=$cpu"
4884         ;;
4885         ultrasparc*|niagara[234])
4886             cpuflags="-mcpu=$cpu"
4887         ;;
4888     esac
4889
4890 elif enabled x86; then
4891
4892     case $cpu in
4893         i[345]86|pentium)
4894             cpuflags="-march=$cpu"
4895             disable i686
4896             disable mmx
4897         ;;
4898         # targets that do NOT support nopl and conditional mov (cmov)
4899         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4900             cpuflags="-march=$cpu"
4901             disable i686
4902         ;;
4903         # targets that do support nopl and conditional mov (cmov)
4904         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4905         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4906         |amdfam10|barcelona|b[dt]ver*|znver*)
4907             cpuflags="-march=$cpu"
4908             enable i686
4909             enable fast_cmov
4910         ;;
4911         # targets that do support conditional mov but on which it's slow
4912         pentium4|pentium4m|prescott|nocona)
4913             cpuflags="-march=$cpu"
4914             enable i686
4915             disable fast_cmov
4916         ;;
4917     esac
4918
4919 fi
4920
4921 if [ "$cpu" != generic ]; then
4922     add_cflags  $cpuflags
4923     add_asflags $cpuflags
4924     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4925 fi
4926
4927 # compiler sanity check
4928 test_exec <<EOF
4929 int main(void){ return 0; }
4930 EOF
4931 if test "$?" != 0; then
4932     echo "$cc is unable to create an executable file."
4933     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4934         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4935         echo "Only do this if you know what cross compiling means."
4936     fi
4937     die "C compiler test failed."
4938 fi
4939
4940 add_cppflags -D_ISOC99_SOURCE
4941 add_cxxflags -D__STDC_CONSTANT_MACROS
4942 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4943
4944 # some compilers silently accept -std=c11, so we also need to check that the
4945 # version macro is defined properly
4946 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4947     add_cflags -std=c11 ||
4948     check_cflags -std=c99
4949
4950 check_cppflags -D_FILE_OFFSET_BITS=64
4951 check_cppflags -D_LARGEFILE_SOURCE
4952
4953 add_host_cppflags -D_ISOC99_SOURCE
4954 check_host_cflags -std=c99
4955 check_host_cflags -Wall
4956 check_host_cflags $host_cflags_speed
4957
4958 check_64bit(){
4959     arch32=$1
4960     arch64=$2
4961     expr=${3:-'sizeof(void *) > 4'}
4962     test_code cc "" "int test[2*($expr) - 1]" &&
4963         subarch=$arch64 || subarch=$arch32
4964     enable $subarch
4965 }
4966
4967 case "$arch" in
4968     aarch64|alpha|ia64)
4969         enabled shared && enable_weak pic
4970     ;;
4971     mips)
4972         check_64bit mips mips64 '_MIPS_SIM > 1'
4973         enabled shared && enable_weak pic
4974     ;;
4975     parisc)
4976         check_64bit parisc parisc64
4977         enabled shared && enable_weak pic
4978     ;;
4979     ppc)
4980         check_64bit ppc ppc64
4981         enabled shared && enable_weak pic
4982     ;;
4983     s390)
4984         check_64bit s390 s390x
4985         enabled shared && enable_weak pic
4986     ;;
4987     sparc)
4988         check_64bit sparc sparc64
4989         enabled shared && enable_weak pic
4990     ;;
4991     x86)
4992         check_64bit x86_32 x86_64
4993         # Treat x32 as x64 for now. Note it also needs pic if shared
4994         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
4995             subarch=x86_64 && enable x86_64 && disable x86_32
4996         if enabled x86_64; then
4997             enabled shared && enable_weak pic
4998             objformat=elf64
4999         fi
5000     ;;
5001 esac
5002
5003 # OS specific
5004 case $target_os in
5005     aix)
5006         SHFLAGS=-shared
5007         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5008         enabled shared && add_ldflags -Wl,-brtl
5009         arflags='-Xany -r -c'
5010         ;;
5011     android)
5012         disable symver
5013         enable section_data_rel_ro
5014         SLIB_INSTALL_NAME='$(SLIBNAME)'
5015         SLIB_INSTALL_LINKS=
5016         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5017         ;;
5018     haiku)
5019         prefix_default="/boot/common"
5020         network_extralibs="-lnetwork"
5021         host_extralibs=
5022         ;;
5023     sunos)
5024         SHFLAGS='-shared -Wl,-h,$$(@F)'
5025         enabled x86 && append SHFLAGS -mimpure-text
5026         network_extralibs="-lsocket -lnsl"
5027         add_cppflags -D__EXTENSIONS__
5028         # When using suncc to build, the Solaris linker will mark
5029         # an executable with each instruction set encountered by
5030         # the Solaris assembler.  As our libraries contain their own
5031         # guards for processor-specific code, instead suppress
5032         # generation of the HWCAPS ELF section on Solaris x86 only.
5033         enabled_all suncc x86 &&
5034             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5035             add_ldflags -Wl,-M,mapfile
5036         nm_default='nm -P -g'
5037         version_script='-M'
5038         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5039         ;;
5040     netbsd)
5041         disable symver
5042         oss_indev_extralibs="-lossaudio"
5043         oss_outdev_extralibs="-lossaudio"
5044         enabled gcc || check_ldflags -Wl,-zmuldefs
5045         ;;
5046     openbsd|bitrig)
5047         disable symver
5048         SHFLAGS='-shared'
5049         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5050         SLIB_INSTALL_LINKS=
5051         oss_indev_extralibs="-lossaudio"
5052         oss_outdev_extralibs="-lossaudio"
5053         ;;
5054     dragonfly)
5055         disable symver
5056         ;;
5057     freebsd)
5058         ;;
5059     bsd/os)
5060         add_extralibs -lpoll -lgnugetopt
5061         strip="strip -d"
5062         ;;
5063     darwin)
5064         enabled ppc && add_asflags -force_cpusubtype_ALL
5065         install_name_dir_default='$(SHLIBDIR)'
5066         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5067         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5068         strip="${strip} -x"
5069         add_ldflags -Wl,-dynamic,-search_paths_first
5070         check_cflags -Werror=partial-availability
5071         SLIBSUF=".dylib"
5072         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5073         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5074         enabled x86_64 && objformat="macho64" || objformat="macho32"
5075         enabled_any pic shared x86_64 ||
5076             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5077         check_header dispatch/dispatch.h &&
5078             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5079         if test -n "$sysroot"; then
5080             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5081             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5082         fi
5083         version_script='-exported_symbols_list'
5084         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5085         ;;
5086     msys*)
5087         die "Native MSYS builds are discouraged, please use the MINGW environment."
5088         ;;
5089     mingw32*|mingw64*)
5090         target_os=mingw32
5091         LIBTARGET=i386
5092         if enabled x86_64; then
5093             LIBTARGET="i386:x86-64"
5094         elif enabled arm; then
5095             LIBTARGET="arm"
5096         elif enabled aarch64; then
5097             LIBTARGET="arm64"
5098         fi
5099         if enabled shared; then
5100             # Cannot build both shared and static libs when using dllimport.
5101             disable static
5102         fi
5103         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5104         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5105         shlibdir_default="$bindir_default"
5106         SLIBPREF=""
5107         SLIBSUF=".dll"
5108         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5109         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5110         if test_cmd lib.exe -list; then
5111             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5112             if enabled x86_64; then
5113                 LIBTARGET=x64
5114             fi
5115         else
5116             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5117         fi
5118         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5119         SLIB_INSTALL_LINKS=
5120         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5121         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5122         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5123         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5124         enabled x86_64 && objformat="win64" || objformat="win32"
5125         dlltool="${cross_prefix}dlltool"
5126         ranlib=:
5127         enable dos_paths
5128         check_ldflags -Wl,--nxcompat,--dynamicbase
5129         # Lets work around some stupidity in binutils.
5130         # ld will strip relocations from executables even though we need them
5131         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5132         # however ld then forgets what the entry point should be (oops) so we
5133         # have to manually (re)set it.
5134         if enabled x86_32; then
5135             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5136         elif enabled x86_64; then
5137             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5138             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5139             # Set image base >4GB for extra entropy with HEASLR
5140             add_ldexeflags -Wl,--image-base,0x140000000
5141             append SHFLAGS -Wl,--image-base,0x180000000
5142         fi
5143         ;;
5144     win32|win64)
5145         disable symver
5146         if enabled shared; then
5147             # Link to the import library instead of the normal static library
5148             # for shared libs.
5149             LD_LIB='%.lib'
5150             # Cannot build both shared and static libs with MSVC or icl.
5151             disable static
5152         fi
5153         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5154         shlibdir_default="$bindir_default"
5155         SLIBPREF=""
5156         SLIBSUF=".dll"
5157         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5158         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5159         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5160         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5161         SLIB_INSTALL_LINKS=
5162         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5163         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5164         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5165         enabled x86_64 && objformat="win64" || objformat="win32"
5166         ranlib=:
5167         enable dos_paths
5168         ;;
5169     cygwin*)
5170         target_os=cygwin
5171         shlibdir_default="$bindir_default"
5172         SLIBPREF="cyg"
5173         SLIBSUF=".dll"
5174         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5175         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5176         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5177         SLIB_INSTALL_LINKS=
5178         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5179         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5180         enabled x86_64 && objformat="win64" || objformat="win32"
5181         enable dos_paths
5182         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5183         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5184         ;;
5185     *-dos|freedos|opendos)
5186         network_extralibs="-lsocket"
5187         objformat="coff"
5188         enable dos_paths
5189         add_cppflags -U__STRICT_ANSI__
5190         ;;
5191     linux)
5192         enable section_data_rel_ro
5193         enabled_any arm aarch64 && enable_weak linux_perf
5194         ;;
5195     irix*)
5196         target_os=irix
5197         ranlib="echo ignoring ranlib"
5198         ;;
5199     os/2*)
5200         strip="lxlite -CS"
5201         striptype=""
5202         objformat="aout"
5203         add_cppflags -D_GNU_SOURCE
5204         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5205         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5206         LIBSUF="_s.a"
5207         SLIBPREF=""
5208         SLIBSUF=".dll"
5209         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5210         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5211         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5212             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5213             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5214             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5215             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5216         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5217             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5218         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5219         SLIB_INSTALL_LINKS=
5220         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5221         enable dos_paths
5222         enable_weak os2threads
5223         ;;
5224     gnu/kfreebsd)
5225         add_cppflags -D_BSD_SOURCE
5226         ;;
5227     gnu)
5228         ;;
5229     qnx)
5230         add_cppflags -D_QNX_SOURCE
5231         network_extralibs="-lsocket"
5232         ;;
5233     symbian)
5234         SLIBSUF=".dll"
5235         enable dos_paths
5236         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5237         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5238         add_ldflags -Wl,--target1-abs,--no-undefined \
5239                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5240                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5241         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5242                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5243                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5244         ;;
5245     minix)
5246         ;;
5247     none)
5248         ;;
5249     *)
5250         die "Unknown OS '$target_os'."
5251         ;;
5252 esac
5253
5254 # test if creating links works
5255 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5256 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5257 mkdir "$link_dest"
5258 $ln_s "$link_dest" "$link_name"
5259 touch "$link_dest/test_file"
5260 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5261     # create link to source path
5262     [ -e src ] && rm src
5263     $ln_s "$source_path" src
5264     source_link=src
5265 else
5266     # creating directory links doesn't work
5267     # fall back to using the full source path
5268     source_link="$source_path"
5269 fi
5270 # cleanup
5271 rm -r "$link_dest"
5272 rm -r "$link_name"
5273
5274 # determine libc flavour
5275
5276 probe_libc(){
5277     pfx=$1
5278     pfx_no_=${pfx%_}
5279     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5280     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5281         eval ${pfx}libc_type=uclibc
5282         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5283     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5284         eval ${pfx}libc_type=glibc
5285         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5286     # MinGW headers can be installed on Cygwin, so check for newlib first.
5287     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5288         eval ${pfx}libc_type=newlib
5289         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5290     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5291     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5292         eval ${pfx}libc_type=mingw64
5293         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5294             add_compat msvcrt/snprintf.o
5295             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5296         fi
5297         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5298         eval test \$${pfx_no_}cc_type = "gcc" &&
5299             add_${pfx}cppflags -D__printf__=__gnu_printf__
5300         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5301             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5302     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5303          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5304         eval ${pfx}libc_type=mingw32
5305         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5306             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5307             die "ERROR: MinGW32 runtime version must be >= 3.15."
5308         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5309         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5310             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5311         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5312             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5313         eval test \$${pfx_no_}cc_type = "gcc" &&
5314             add_${pfx}cppflags -D__printf__=__gnu_printf__
5315     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5316         eval ${pfx}libc_type=msvcrt
5317         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5318             if [ "$pfx" = host_ ]; then
5319                 add_host_cppflags -Dsnprintf=_snprintf
5320             else
5321                 add_compat strtod.o strtod=avpriv_strtod
5322                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5323                                              _snprintf=avpriv_snprintf  \
5324                                              vsnprintf=avpriv_vsnprintf
5325             fi
5326         fi
5327         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5328         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5329         # 0x601 by default unless something else is set by the user.
5330         # This can easily lead to us detecting functions only present
5331         # in such new versions and producing binaries requiring windows 7.0.
5332         # Therefore explicitly set the default to Vista unless the user has
5333         # set something else on the command line.
5334         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5335         # family. For these cases, configure is free to use any functions
5336         # found in the SDK headers by default. (Alternatively, we could force
5337         # _WIN32_WINNT to 0x0602 in that case.)
5338         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5339             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5340 #ifdef WINAPI_FAMILY
5341 #include <winapifamily.h>
5342 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5343 #error not desktop
5344 #endif
5345 #endif
5346 EOF
5347         if [ "$pfx" = "" ]; then
5348             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5349             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5350         fi
5351     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5352         eval ${pfx}libc_type=klibc
5353     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5354         eval ${pfx}libc_type=bionic
5355     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5356         eval ${pfx}libc_type=solaris
5357         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5358     fi
5359     test_${pfx}cc <<EOF
5360 #include <time.h>
5361 void *v = localtime_r;
5362 EOF
5363 test "$?" != 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
5364 #include <time.h>
5365 void *v = localtime_r;
5366 EOF
5367
5368     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5369 }
5370
5371 probe_libc
5372 probe_libc host_
5373
5374 # hacks for compiler/libc/os combinations
5375
5376 case $libc_type in
5377     bionic)
5378         add_compat strtod.o strtod=avpriv_strtod
5379         ;;
5380 esac
5381
5382 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5383     add_cppflags '-I\$(SRC_PATH)/compat/float'
5384
5385 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5386
5387 set_default libdir
5388 : ${shlibdir_default:="$libdir"}
5389 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5390
5391 set_default $PATHS_LIST
5392 set_default nm
5393
5394 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5395
5396 enable_weak_pic() {
5397     disabled pic && return
5398     enable pic
5399     add_cppflags -DPIC
5400     case "$target_os" in
5401     mingw*|cygwin*|win*)
5402         ;;
5403     *)
5404         add_cflags -fPIC
5405         add_asflags -fPIC
5406         ;;
5407     esac
5408 }
5409
5410 enabled pic && enable_weak_pic
5411
5412 test_cc <<EOF || die "Symbol mangling check failed."
5413 int ff_extern;
5414 EOF
5415 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5416 extern_prefix=${sym%%ff_extern*}
5417
5418 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5419
5420 for restrict_keyword in restrict __restrict__ __restrict ""; do
5421     test_code cc "" "char * $restrict_keyword p" && break
5422 done
5423
5424 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5425
5426 # The global variable ensures the bits appear unchanged in the object file.
5427 test_cc <<EOF || die "endian test failed"
5428 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5429 EOF
5430 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5431
5432 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5433
5434 if ! enabled ppc64 || enabled bigendian; then
5435     disable vsx
5436 fi
5437
5438 check_gas() {
5439     log "check_gas using '$as' as AS"
5440     # :vararg is used on aarch64, arm and ppc altivec
5441     check_as vararg "
5442 .macro m n, y:vararg=0
5443 \n: .int \y
5444 .endm
5445 m x" || return 1
5446     # .altmacro is only used in arm asm
5447     ! enabled arm || check_as gnu_as ".altmacro"
5448 }
5449
5450 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5451     nogas=:
5452     enabled_any arm aarch64 && nogas=die
5453     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5454     as_noop=-v
5455
5456     case $as_type in
5457         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5458         gcc)  gaspp_as_type=gas ;;
5459         *)    gaspp_as_type=$as_type ;;
5460     esac
5461
5462     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5463
5464     test "${as#*gas-preprocessor.pl}" != "$as" ||
5465     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5466         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5467
5468     if ! check_gas ; then
5469         as=${gas:=$as}
5470         check_gas || \
5471             $nogas "GNU assembler not found, install/update gas-preprocessor"
5472     fi
5473
5474     check_as as_func ".func test
5475                       .endfunc"
5476 fi
5477
5478 check_inline_asm inline_asm_labels '"1:\n"'
5479
5480 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5481
5482 if enabled aarch64; then
5483     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5484     # internal assembler in clang 3.3 does not support this instruction
5485     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5486     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5487
5488     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5489
5490 elif enabled alpha; then
5491
5492     check_cflags -mieee
5493
5494 elif enabled arm; then
5495
5496     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5497     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5498 float func(float a, float b){ return a+b; }
5499 EOF
5500     enabled thumb && check_cflags -mthumb || check_cflags -marm
5501
5502     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5503         :
5504     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5505         :
5506     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5507         case "${cross_prefix:-$cc}" in
5508             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5509             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5510 __asm__ (".eabi_attribute 28, 1");
5511 int main(void) { return 0; }
5512 EOF
5513         esac
5514         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5515     fi
5516
5517     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5518     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5519     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5520     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5521     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5522     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5523     enabled setend  && check_insn setend  'setend be'
5524
5525     [ $target_os = linux ] || [ $target_os = android ] ||
5526         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5527             $ARCH_EXT_LIST_ARM
5528
5529     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5530
5531     check_as as_arch_directive ".arch armv7-a"
5532     check_as as_dn_directive   "ra .dn d0.i16"
5533     check_as as_fpu_directive  ".fpu neon"
5534
5535     # llvm's integrated assembler supports .object_arch from llvm 3.5
5536     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5537         check_as as_object_arch ".object_arch armv4"
5538
5539     # MS armasm fails to assemble our PIC constructs
5540     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5541
5542 elif enabled mips; then
5543
5544     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5545     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5546     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5547
5548     # Enable minimum ISA based on selected options
5549     if enabled mips64; then
5550         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5551         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5552         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5553     else
5554         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5555         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5556         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5557         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5558     fi
5559
5560     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5561     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5562     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5563     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5564     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5565
5566     if enabled bigendian && enabled msa; then
5567         disable msa
5568     fi
5569
5570 elif enabled parisc; then
5571
5572     if enabled gcc; then
5573         case $($cc -dumpversion) in
5574             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5575         esac
5576     fi
5577
5578 elif enabled ppc; then
5579
5580     enable local_aligned
5581
5582     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5583     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5584     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5585     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5586
5587     if enabled altivec; then
5588         check_cflags -maltivec -mabi=altivec
5589
5590         # check if our compiler supports Motorola AltiVec C API
5591         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5592                                     vector signed int v2 = (vector signed int) { 1 };
5593                                     v1 = vec_add(v1, v2);"
5594
5595         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5596     fi
5597
5598     if enabled vsx; then
5599         check_cflags -mvsx &&
5600         check_cc vsx altivec.h "int v[4] = { 0 };
5601                                 vector signed int v1 = vec_vsx_ld(0, v);"
5602     fi
5603
5604     if enabled power8; then
5605         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5606     fi
5607
5608 elif enabled x86; then
5609
5610     check_builtin rdtsc    intrin.h   "__rdtsc()"
5611     check_builtin mm_empty mmintrin.h "_mm_empty()"
5612
5613     enable local_aligned
5614
5615     # check whether EBP is available on x86
5616     # As 'i' is stored on the stack, this program will crash
5617     # if the base pointer is used to access it because the
5618     # base pointer is cleared in the inline assembly code.
5619     check_exec_crash <<EOF && enable ebp_available
5620 volatile int i=0;
5621 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5622 return i;
5623 EOF
5624
5625     # check whether EBX is available on x86
5626     check_inline_asm ebx_available '""::"b"(0)' &&
5627         check_inline_asm ebx_available '"":::"%ebx"'
5628
5629     # check whether xmm clobbers are supported
5630     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5631
5632     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5633         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5634
5635     # check whether binutils is new enough to compile SSSE3/MMXEXT
5636     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5637     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5638
5639     probe_x86asm(){
5640         x86asmexe_probe=$1
5641         if test_cmd $x86asmexe_probe -v; then
5642             x86asmexe=$x86asmexe_probe
5643             x86asm_type=nasm
5644             x86asm_debug="-g -F dwarf"
5645             X86ASMDEP=
5646             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5647         elif test_cmd $x86asmexe_probe --version; then
5648             x86asmexe=$x86asmexe_probe
5649             x86asm_type=yasm
5650             x86asm_debug="-g dwarf2"
5651             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5652             X86ASM_DEPFLAGS=
5653         fi
5654         check_x86asm x86asm "movbe ecx, [5]"
5655     }
5656
5657     if ! disabled_any asm mmx x86asm; then
5658         disable x86asm
5659         for program in $x86asmexe nasm yasm; do
5660             probe_x86asm $program && break
5661         done
5662         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5663         X86ASMFLAGS="-f $objformat"
5664         enabled pic               && append X86ASMFLAGS "-DPIC"
5665         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5666         case "$objformat" in
5667             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5668         esac
5669
5670         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5671         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5672         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5673         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5674         check_x86asm cpunop          "CPU amdnop"
5675     fi
5676
5677     case "$cpu" in
5678         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5679             disable fast_clz
5680         ;;
5681     esac
5682
5683 fi
5684
5685 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5686
5687 check_ldflags -Wl,--as-needed
5688 check_ldflags -Wl,-z,noexecstack
5689
5690 if ! disabled network; then
5691     check_func getaddrinfo $network_extralibs
5692     check_func inet_aton $network_extralibs
5693
5694     check_type netdb.h "struct addrinfo"
5695     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5696     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5697     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5698     check_type poll.h "struct pollfd"
5699     check_type netinet/sctp.h "struct sctp_event_subscribe"
5700     check_struct "sys/socket.h" "struct msghdr" msg_flags
5701     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5702     check_type netinet/in.h "struct sockaddr_in6"
5703     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5704     check_type "sys/types.h sys/socket.h" socklen_t
5705
5706     # Prefer arpa/inet.h over winsock2
5707     if check_header arpa/inet.h ; then
5708         check_func closesocket
5709     elif check_header winsock2.h ; then
5710         check_func_headers winsock2.h closesocket -lws2 &&
5711             network_extralibs="-lws2" ||
5712         { check_func_headers winsock2.h closesocket -lws2_32 &&
5713             network_extralibs="-lws2_32"; } || disable winsock2_h network
5714         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5715
5716         check_type ws2tcpip.h socklen_t
5717         check_type ws2tcpip.h "struct addrinfo"
5718         check_type ws2tcpip.h "struct group_source_req"
5719         check_type ws2tcpip.h "struct ip_mreq_source"
5720         check_type ws2tcpip.h "struct ipv6_mreq"
5721         check_type winsock2.h "struct pollfd"
5722         check_struct winsock2.h "struct sockaddr" sa_len
5723         check_type ws2tcpip.h "struct sockaddr_in6"
5724         check_type ws2tcpip.h "struct sockaddr_storage"
5725     else
5726         disable network
5727     fi
5728 fi
5729
5730 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5731 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5732 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5733 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5734 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5735 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5736 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5737
5738 case "$custom_allocator" in
5739     jemalloc)
5740         # jemalloc by default does not use a prefix
5741         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5742     ;;
5743     tcmalloc)
5744         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5745         malloc_prefix=tc_
5746     ;;
5747 esac
5748
5749 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5750 check_func  ${malloc_prefix}memalign            && enable memalign
5751 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5752
5753 check_func  access
5754 check_func_headers stdlib.h arc4random
5755 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5756 check_func  fcntl
5757 check_func  fork
5758 check_func  gethrtime
5759 check_func  getopt
5760 check_func  getrusage
5761 check_func  gettimeofday
5762 check_func  isatty
5763 check_func  mkstemp
5764 check_func  mmap
5765 check_func  mprotect
5766 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5767 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5768 check_func  sched_getaffinity
5769 check_func  setrlimit
5770 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5771 check_func  strerror_r
5772 check_func  sysconf
5773 check_func  sysctl
5774 check_func  usleep
5775
5776 check_func_headers conio.h kbhit
5777 check_func_headers io.h setmode
5778 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5779 check_func_headers mach/mach_time.h mach_absolute_time
5780 check_func_headers stdlib.h getenv
5781 check_func_headers sys/stat.h lstat
5782
5783 check_func_headers windows.h GetProcessAffinityMask
5784 check_func_headers windows.h GetProcessTimes
5785 check_func_headers windows.h GetSystemTimeAsFileTime
5786 check_func_headers windows.h LoadLibrary
5787 check_func_headers windows.h MapViewOfFile
5788 check_func_headers windows.h PeekNamedPipe
5789 check_func_headers windows.h SetConsoleTextAttribute
5790 check_func_headers windows.h SetConsoleCtrlHandler
5791 check_func_headers windows.h Sleep
5792 check_func_headers windows.h VirtualAlloc
5793 check_func_headers glob.h glob
5794 enabled xlib &&
5795     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5796
5797 check_header direct.h
5798 check_header dirent.h
5799 check_header dxgidebug.h
5800 check_header dxva.h
5801 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5802 check_header io.h
5803 check_header libcrystalhd/libcrystalhd_if.h
5804 check_header malloc.h
5805 check_header net/udplite.h
5806 check_header poll.h
5807 check_header sys/param.h
5808 check_header sys/resource.h
5809 check_header sys/select.h
5810 check_header sys/time.h
5811 check_header sys/un.h
5812 check_header termios.h
5813 check_header unistd.h
5814 check_header valgrind/valgrind.h
5815 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5816 check_header windows.h
5817 check_header X11/extensions/XvMClib.h
5818 check_header asm/types.h
5819
5820 # it seems there are versions of clang in some distros that try to use the
5821 # gcc headers, which explodes for stdatomic
5822 # so we also check that atomics actually work here
5823 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5824
5825 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5826 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5827 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5828 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5829 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5830
5831 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5832 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5833 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5834
5835 enabled appkit       && check_apple_framework AppKit
5836 enabled audiotoolbox && check_apple_framework AudioToolbox
5837 enabled avfoundation && check_apple_framework AVFoundation
5838 enabled coreimage    && check_apple_framework CoreImage
5839 enabled videotoolbox && check_apple_framework VideoToolbox
5840
5841 check_apple_framework CoreFoundation
5842 check_apple_framework CoreMedia
5843 check_apple_framework CoreVideo
5844
5845 enabled avfoundation && {
5846     disable coregraphics applicationservices
5847     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5848     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5849
5850 enabled videotoolbox && {
5851     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5852     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5853 }
5854
5855 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5856
5857 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5858 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5859 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5860 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5861 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5862
5863 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5864 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5865 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5866 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5867 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5868 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5869 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5870 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5871 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5872 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5873
5874 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5875
5876 if ! disabled ffnvcodec; then
5877     check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.1" \
5878         "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5879 fi
5880
5881 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5882
5883 if ! disabled w32threads && ! enabled pthreads; then
5884     check_func_headers "windows.h process.h" _beginthreadex &&
5885         check_type "windows.h" CONDITION_VARIABLE &&
5886         enable w32threads || disable w32threads
5887     if ! enabled w32threads && enabled winrt; then
5888         check_func_headers "windows.h" CreateThread &&
5889             enable w32threads || disable w32threads
5890     fi
5891 fi
5892
5893 # check for some common methods of building with pthread support
5894 # do this before the optional library checks as some of them require pthreads
5895 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5896     if check_lib pthreads pthread.h pthread_join   -pthread &&
5897        check_lib pthreads pthread.h pthread_create -pthread; then
5898         add_cflags -pthread
5899     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5900          check_lib pthreads pthread.h pthread_create -pthreads; then
5901         add_cflags -pthreads
5902     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5903          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5904         add_cflags -ldl -pthread
5905     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5906          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5907         :
5908     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5909          check_lib pthreads pthread.h pthread_create -lpthread; then
5910         :
5911     elif check_func pthread_join && check_func pthread_create; then
5912         enable pthreads
5913     fi
5914     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5915
5916     if enabled pthreads; then
5917         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5918         check_func pthread_cancel $pthreads_extralibs
5919     fi
5920 fi
5921
5922 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5923 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5924 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5925
5926 # On some systems dynamic loading requires no extra linker flags
5927 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5928
5929 check_lib libm math.h sin -lm
5930
5931 atan2f_args=2
5932 copysign_args=2
5933 hypot_args=2
5934 ldexpf_args=2
5935 powf_args=2
5936
5937 for func in $MATH_FUNCS; do
5938     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5939 done
5940
5941 for func in $COMPLEX_FUNCS; do
5942     eval check_complexfunc $func \${${func}_args:-1}
5943 done
5944
5945 # these are off by default, so fail if requested and not available
5946 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5947 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5948 enabled decklink          && { require_header DeckLinkAPI.h &&
5949                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5950 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5951 enabled frei0r            && require_header frei0r.h
5952 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5953 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5954 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5955 enabled ladspa            && require_header ladspa.h
5956 enabled libaom            && require_pkg_config libaom "aom >= 0.1.0" aom/aom_codec.h aom_codec_version
5957 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5958 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5959 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5960 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5961 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5962 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5963                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5964                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5965 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5966 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
5967 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5968 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5969 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5970                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5971                                  warn "using libfdk without pkg-config"; } }
5972 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"
5973 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5974 enabled fontconfig        && enable libfontconfig
5975 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5976 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5977 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5978 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5979                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5980 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5981                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5982                                done || die "ERROR: libgsm not found"; }
5983 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5984 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5985 # While it may appear that require is being used as a pkg-config
5986 # fallback for libmfx, it is actually being used to detect a different
5987 # installation route altogether.  If libmfx is installed via the Intel
5988 # Media SDK or Intel Media Server Studio, these don't come with
5989 # pkg-config support.  Instead, users should make sure that the build
5990 # can find the libraries and headers through other means.
5991 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5992                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5993 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5994 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
5995 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5996 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5997                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5998                                die "ERROR: libnpp not found"; }
5999 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6000 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6001 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6002                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6003                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6004                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6005 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6006 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6007                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6008 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6009 enabled libopus           && {
6010     enabled libopus_decoder && {
6011         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6012     }
6013     enabled libopus_encoder && {
6014         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6015     }
6016 }
6017 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6018 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6019 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6020 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6021 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6022 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6023                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6024 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6025 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6026 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6027 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6028 enabled libsrt            && require_pkg_config libsrt "srt >= 1.2.0" srt/srt.h srt_socket
6029 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6030 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6031 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6032 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6033                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6034                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6035 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6036 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6037 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
6038 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6039 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6040                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6041
6042 enabled libvpx            && {
6043     enabled libvpx_vp8_decoder && {
6044         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6045             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6046                 die "ERROR: libvpx decoder version must be >=1.4.0";
6047     }
6048     enabled libvpx_vp8_encoder && {
6049         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6050             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6051                 die "ERROR: libvpx encoder version must be >=1.4.0";
6052     }
6053     enabled libvpx_vp9_decoder && {
6054         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6055             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6056     }
6057     enabled libvpx_vp9_encoder && {
6058         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6059             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6060     }
6061     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6062         die "libvpx enabled but no supported decoders found"
6063     fi
6064 }
6065
6066 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6067 enabled libwebp           && {
6068     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6069     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6070 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6071                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6072                                  warn "using libx264 without pkg-config"; } } &&
6073                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6074                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6075 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6076                              require_cpp_condition x265.h "X265_BUILD >= 68"
6077 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6078 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6079 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6080 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6081 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6082                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6083                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6084 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6085 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6086 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6087                                { ! enabled cross_compile &&
6088                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6089                                  add_ldflags -L/opt/vc/lib/ &&
6090                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6091                                die "ERROR: mmal not found" &&
6092                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6093 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6094                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6095                                die "ERROR: openal not found"; } &&
6096                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6097                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6098 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6099                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6100                                die "ERROR: opencl not found"; } &&
6101                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6102                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6103                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6104 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6105                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6106                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6107                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6108                                die "ERROR: opengl not found."
6109                              }
6110 enabled omx               && require_header OMX_Core.h
6111 enabled omx_rpi           && { check_header OMX_Core.h ||
6112                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6113                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6114 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6115                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6116                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6117                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6118                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6119                                die "ERROR: openssl not found"; }
6120 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6121                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6122                                { enabled libdrm ||
6123                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6124                              }
6125
6126 if enabled gcrypt; then
6127     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6128     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6129         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6130         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6131         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6132             die "ERROR: gcrypt not found"
6133         add_cflags $gcrypt_cflags
6134     else
6135         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6136     fi
6137 fi
6138
6139 if enabled sdl2; then
6140     SDL2_CONFIG="${cross_prefix}sdl2-config"
6141     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6142     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6143         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6144         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6145         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6146         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6147         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6148             enable sdl2
6149     fi
6150     if test $target_os = "mingw32"; then
6151         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6152     fi
6153 fi
6154
6155 if enabled decklink; then
6156     case $target_os in
6157         mingw32*|mingw64*|win32|win64)
6158             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6159             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6160             ;;
6161     esac
6162 fi
6163
6164 enabled securetransport &&
6165     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6166     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6167         disable securetransport
6168
6169 enabled securetransport &&
6170     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6171
6172 enabled schannel &&
6173     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6174     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6175     schannel_extralibs="-lsecur32" ||
6176         disable schannel
6177
6178 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6179 enabled makeinfo \
6180     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6181     && enable makeinfo_html || disable makeinfo_html
6182 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6183 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6184 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6185 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6186
6187 # check V4L2 codecs available in the API
6188 check_header linux/fb.h
6189 check_header linux/videodev2.h
6190 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6191 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6192 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6193 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6194 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6195 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6196 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6197 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6198 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6199 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6200 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6201
6202 check_header sys/videoio.h
6203 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6204
6205 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6206 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6207 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6208 # w32api 3.12 had it defined wrong
6209 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6210
6211 check_type "dshow.h" IBaseFilter
6212
6213 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6214 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6215     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6216     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6217     check_header "dev/ic/bt8xx.h"
6218
6219 if check_struct sys/soundcard.h audio_buf_info bytes; then
6220     enable_sanitized sys/soundcard.h
6221 else
6222     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6223     #include <sys/soundcard.h>
6224     audio_buf_info abc;
6225 EOF
6226 fi
6227
6228 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6229     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6230
6231 enabled libjack &&
6232     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6233
6234 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6235
6236 if enabled libcdio; then
6237     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6238     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6239     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6240     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6241     die "ERROR: No usable libcdio/cdparanoia found"
6242 fi
6243
6244 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6245     disable libxcb_shm libxcb_shape libxcb_xfixes
6246
6247 if enabled libxcb; then
6248     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6249     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6250     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6251 fi
6252
6253 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6254
6255 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6256 # the desktop api partition
6257 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6258 #ifdef WINAPI_FAMILY
6259 #include <winapifamily.h>
6260 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6261 #error desktop, not uwp
6262 #else
6263 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6264 #endif
6265 #else
6266 #error no family set
6267 #endif
6268 EOF
6269
6270 enabled vaapi &&
6271     check_lib vaapi va/va.h vaInitialize -lva
6272
6273 enabled vaapi &&
6274     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6275
6276 if enabled vaapi; then
6277     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6278     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6279 fi
6280
6281 enabled vaapi &&
6282     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6283
6284 if enabled_all opencl libdrm ; then
6285     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6286         enable opencl_drm_beignet
6287     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6288         enable opencl_drm_arm
6289 fi
6290
6291 if enabled_all opencl vaapi ; then
6292     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6293     if enabled libmfx ; then
6294         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6295             enable opencl_vaapi_intel_media
6296     fi
6297 fi
6298
6299 if enabled_all opencl dxva2 ; then
6300     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6301         enable opencl_dxva2
6302 fi
6303
6304 if enabled_all opencl d3d11va ; then
6305     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6306         enable opencl_d3d11
6307 fi
6308
6309 enabled vdpau &&
6310     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6311
6312 enabled vdpau &&
6313     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6314
6315 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6316
6317 if enabled x86; then
6318     case $target_os in
6319         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6320             ;;
6321         *)
6322             disable ffnvcodec cuvid nvdec nvenc
6323             ;;
6324     esac
6325 else
6326     disable ffnvcodec cuvid nvdec nvenc
6327 fi
6328
6329 enabled ffnvcodec && enable cuda
6330
6331 enabled nvenc &&
6332     test_cc -I$source_path <<EOF || disable nvenc
6333 #include <ffnvcodec/nvEncodeAPI.h>
6334 NV_ENCODE_API_FUNCTION_LIST flist;
6335 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6336 int main(void) { return 0; }
6337 EOF
6338
6339 enabled amf &&
6340     check_cpp_condition amf "AMF/core/Version.h" \
6341         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6342
6343 # Funny iconv installations are not unusual, so check it after all flags have been set
6344 if enabled libc_iconv; then
6345     check_func_headers iconv.h iconv
6346 elif enabled iconv; then
6347     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6348 fi
6349
6350 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6351
6352 # add some useful compiler flags if supported
6353 check_cflags -Wdeclaration-after-statement
6354 check_cflags -Wall
6355 check_cflags -Wdisabled-optimization
6356 check_cflags -Wpointer-arith
6357 check_cflags -Wredundant-decls
6358 check_cflags -Wwrite-strings
6359 check_cflags -Wtype-limits
6360 check_cflags -Wundef
6361 check_cflags -Wmissing-prototypes
6362 check_cflags -Wno-pointer-to-int-cast
6363 check_cflags -Wstrict-prototypes
6364 check_cflags -Wempty-body
6365
6366 if enabled extra_warnings; then
6367     check_cflags -Wcast-qual
6368     check_cflags -Wextra
6369     check_cflags -Wpedantic
6370 fi
6371
6372 check_disable_warning(){
6373     warning_flag=-W${1#-Wno-}
6374     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6375 }
6376
6377 test_cflags -Werror=unused-command-line-argument &&
6378     append unknown_warning_flags "-Werror=unused-command-line-argument"
6379 test_cflags -Werror=unknown-warning-option &&
6380     append unknown_warning_flags "-Werror=unknown-warning-option"
6381
6382 check_disable_warning -Wno-parentheses
6383 check_disable_warning -Wno-switch
6384 check_disable_warning -Wno-format-zero-length
6385 check_disable_warning -Wno-pointer-sign
6386 check_disable_warning -Wno-unused-const-variable
6387 check_disable_warning -Wno-bool-operation
6388
6389 check_disable_warning_headers(){
6390     warning_flag=-W${1#-Wno-}
6391     test_cflags $warning_flag && add_cflags_headers $1
6392 }
6393
6394 check_disable_warning_headers -Wno-deprecated-declarations
6395 check_disable_warning_headers -Wno-unused-variable
6396
6397 test_cc <<EOF && enable blocks_extension
6398 void (^block)(void);
6399 EOF
6400
6401 # add some linker flags
6402 check_ldflags -Wl,--warn-common
6403 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6404 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6405 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6406
6407 # add some strip flags
6408 check_stripflags -x
6409
6410 enabled neon_clobber_test &&
6411     check_ldflags -Wl,--wrap,avcodec_open2              \
6412                   -Wl,--wrap,avcodec_decode_audio4      \
6413                   -Wl,--wrap,avcodec_decode_video2      \
6414                   -Wl,--wrap,avcodec_decode_subtitle2   \
6415                   -Wl,--wrap,avcodec_encode_audio2      \
6416                   -Wl,--wrap,avcodec_encode_video2      \
6417                   -Wl,--wrap,avcodec_encode_subtitle    \
6418                   -Wl,--wrap,avcodec_send_packet        \
6419                   -Wl,--wrap,avcodec_receive_packet     \
6420                   -Wl,--wrap,avcodec_send_frame         \
6421                   -Wl,--wrap,avcodec_receive_frame      \
6422                   -Wl,--wrap,swr_convert                \
6423                   -Wl,--wrap,avresample_convert ||
6424     disable neon_clobber_test
6425
6426 enabled xmm_clobber_test &&
6427     check_ldflags -Wl,--wrap,avcodec_open2              \
6428                   -Wl,--wrap,avcodec_decode_audio4      \
6429                   -Wl,--wrap,avcodec_decode_video2      \
6430                   -Wl,--wrap,avcodec_decode_subtitle2   \
6431                   -Wl,--wrap,avcodec_encode_audio2      \
6432                   -Wl,--wrap,avcodec_encode_video2      \
6433                   -Wl,--wrap,avcodec_encode_subtitle    \
6434                   -Wl,--wrap,avcodec_send_packet        \
6435                   -Wl,--wrap,avcodec_receive_packet     \
6436                   -Wl,--wrap,avcodec_send_frame         \
6437                   -Wl,--wrap,avcodec_receive_frame      \
6438                   -Wl,--wrap,swr_convert                \
6439                   -Wl,--wrap,avresample_convert         \
6440                   -Wl,--wrap,sws_scale ||
6441     disable xmm_clobber_test
6442
6443 check_ld "cc" proper_dce <<EOF
6444 extern const int array[512];
6445 static inline int func(void) { return array[0]; }
6446 int main(void) { return 0; }
6447 EOF
6448
6449 if enabled proper_dce; then
6450     echo "X { local: *; };" > $TMPV
6451     if test_ldflags -Wl,${version_script},$TMPV; then
6452         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6453         quotes='""'
6454         test_cc <<EOF && enable symver_asm_label
6455 void ff_foo(void) __asm__ ("av_foo@VERSION");
6456 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6457 EOF
6458         test_cc <<EOF && enable symver_gnu_asm
6459 __asm__(".symver ff_foo,av_foo@VERSION");
6460 void ff_foo(void) {}
6461 EOF
6462     fi
6463 fi
6464
6465 if [ -z "$optflags" ]; then
6466     if enabled small; then
6467         optflags=$cflags_size
6468     elif enabled optimizations; then
6469         optflags=$cflags_speed
6470     else
6471         optflags=$cflags_noopt
6472     fi
6473 fi
6474
6475 if [ -z "$nvccflags" ]; then
6476     nvccflags=$nvccflags_default
6477 fi
6478
6479 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6480     nvccflags="$nvccflags -m64"
6481 else
6482     nvccflags="$nvccflags -m32"
6483 fi
6484
6485 check_optflags(){
6486     check_cflags "$@"
6487     enabled lto && check_ldflags "$@"
6488 }
6489
6490 check_optflags $optflags
6491 check_optflags -fno-math-errno
6492 check_optflags -fno-signed-zeros
6493
6494 if enabled lto; then
6495     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6496     check_cflags  -flto
6497     check_ldflags -flto $cpuflags
6498     disable inline_asm_direct_symbol_refs
6499 fi
6500
6501 enabled ftrapv && check_cflags -ftrapv
6502
6503 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6504 int x;
6505 EOF
6506
6507
6508 if enabled icc; then
6509     # Just warnings, no remarks
6510     check_cflags -w1
6511     # -wd: Disable following warnings
6512     # 144, 167, 556: -Wno-pointer-sign
6513     # 188: enumerated type mixed with another type
6514     # 1292: attribute "foo" ignored
6515     # 1419: external declaration in primary source file
6516     # 10006: ignoring unknown option -fno-signed-zeros
6517     # 10148: ignoring unknown option -Wno-parentheses
6518     # 10156: ignoring option '-W'; no argument required
6519     # 13200: No EMMS instruction before call to function
6520     # 13203: No EMMS instruction before return from function
6521     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6522     # 11030: Warning unknown option --as-needed
6523     # 10156: ignoring option '-export'; no argument required
6524     check_ldflags -wd10156,11030
6525     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6526     enable ebp_available
6527     # The test above does not test linking
6528     enabled lto && disable symver_asm_label
6529     if enabled x86_32; then
6530         icc_version=$($cc -dumpversion)
6531         test ${icc_version%%.*} -ge 11 &&
6532             check_cflags -falign-stack=maintain-16-byte ||
6533             disable aligned_stack
6534     fi
6535 elif enabled gcc; then
6536     check_optflags -fno-tree-vectorize
6537     check_cflags -Werror=format-security
6538     check_cflags -Werror=implicit-function-declaration
6539     check_cflags -Werror=missing-prototypes
6540     check_cflags -Werror=return-type
6541     check_cflags -Werror=vla
6542     check_cflags -Wformat
6543     check_cflags -fdiagnostics-color=auto
6544     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6545     if enabled x86_32; then
6546         case $target_os in
6547         *bsd*)
6548             # BSDs don't guarantee a 16 byte aligned stack, but we can
6549             # request GCC to try to maintain 16 byte alignment throughout
6550             # function calls. Library entry points that might call assembly
6551             # functions align the stack. (The parameter means 2^4 bytes.)
6552             check_cflags -mpreferred-stack-boundary=4
6553             ;;
6554         esac
6555     fi
6556 elif enabled llvm_gcc; then
6557     check_cflags -mllvm -stack-alignment=16
6558 elif enabled clang; then
6559     if enabled x86_32; then
6560         # Clang doesn't support maintaining alignment without assuming the
6561         # same alignment in every function. If 16 byte alignment would be
6562         # enabled, one would also have to either add attribute_align_arg on
6563         # every single entry point into the libraries or enable -mstackrealign
6564         # (doing stack realignment in every single function).
6565         case $target_os in
6566         mingw32|win32|*bsd*)
6567             disable aligned_stack
6568             ;;
6569         *)
6570             check_cflags -mllvm -stack-alignment=16
6571             check_cflags -mstack-alignment=16
6572             ;;
6573         esac
6574     else
6575         check_cflags -mllvm -stack-alignment=16
6576         check_cflags -mstack-alignment=16
6577     fi
6578     check_cflags -Qunused-arguments
6579     check_cflags -Werror=implicit-function-declaration
6580     check_cflags -Werror=missing-prototypes
6581     check_cflags -Werror=return-type
6582 elif enabled cparser; then
6583     add_cflags -Wno-missing-variable-declarations
6584     add_cflags -Wno-empty-statement
6585 elif enabled armcc; then
6586     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6587     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6588     # 2523: use of inline assembly is deprecated
6589     add_cflags -W${armcc_opt},--diag_suppress=2523
6590     add_cflags -W${armcc_opt},--diag_suppress=1207
6591     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6592     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6593     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6594     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6595 elif enabled pathscale; then
6596     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6597     disable inline_asm
6598 elif enabled_any msvc icl; then
6599     enabled x86_32 && disable aligned_stack
6600     enabled_all x86_32 debug && add_cflags -Oy-
6601     enabled debug && add_ldflags -debug
6602     enable pragma_deprecated
6603     if enabled icl; then
6604         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6605         # (correctly) on icl 13.x.
6606         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6607             add_cflags -Qansi-alias
6608         # Some inline asm is not compilable in debug
6609         if enabled debug; then
6610             disable ebp_available
6611             disable ebx_available
6612         fi
6613     fi
6614     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6615     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6616     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6617     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6618     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6619     # MSVC 2013 and newer can handle it fine.
6620     # If this declspec fails, force including stdlib.h before the restrict redefinition
6621     # happens in config.h.
6622     if [ $restrict_keyword != restrict ]; then
6623         test_cc <<EOF || add_cflags -FIstdlib.h
6624 __declspec($restrict_keyword) void *foo(int);
6625 EOF
6626     fi
6627     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6628     # Issue has been fixed in MSVC v19.00.24218.
6629     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6630         check_cflags -d2SSAOptimizer-
6631     # enable utf-8 source processing on VS2015 U2 and newer
6632     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6633         add_cflags -utf-8
6634 fi
6635
6636 for pfx in "" host_; do
6637     varname=${pfx%_}cc_type
6638     eval "type=\$$varname"
6639     if [ "$type" = "msvc" ]; then
6640         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6641 static inline int foo(int a) { return a; }
6642 EOF
6643     fi
6644 done
6645
6646 case $as_type in
6647     clang)
6648         add_asflags -Qunused-arguments
6649     ;;
6650 esac
6651
6652 case $ld_type in
6653     clang)
6654         check_ldflags -Qunused-arguments
6655     ;;
6656 esac
6657
6658 enable frame_thread_encoder
6659
6660 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6661
6662 check_deps $CONFIG_LIST       \
6663            $CONFIG_EXTRA      \
6664            $HAVE_LIST         \
6665            $ALL_COMPONENTS    \
6666
6667 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"
6668 enabled avresample && warn "Building with deprecated library libavresample"
6669
6670 if test $target_os = "haiku"; then
6671     disable memalign
6672     disable posix_memalign
6673 fi
6674
6675 flatten_extralibs(){
6676     unset nested_entries
6677     list_name=$1
6678     eval list=\$${1}
6679     for entry in $list; do
6680         entry_copy=$entry
6681         resolve entry_copy
6682         append nested_entries $(filter '*_extralibs' $entry_copy)
6683         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6684         eval $entry="\$flat_entries"
6685     done
6686     append $list_name "$nested_entries"
6687
6688     resolve nested_entries
6689     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6690         flatten_extralibs $list_name
6691     fi
6692 }
6693
6694 flatten_extralibs_wrapper(){
6695     list_name=$1
6696     flatten_extralibs $list_name
6697     unique $list_name
6698     resolve $list_name
6699     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6700     eval printf \''%s'\' \""\$$list_name"\"
6701 }
6702
6703 for linkunit in $LIBRARY_LIST; do
6704     unset current_extralibs
6705     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6706     for comp in ${components}; do
6707         enabled $comp || continue
6708         comp_extralibs="${comp}_extralibs"
6709         append current_extralibs $comp_extralibs
6710     done
6711     eval prepend ${linkunit}_extralibs $current_extralibs
6712 done
6713
6714 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6715     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6716 done
6717
6718 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6719
6720 for thread in $THREADS_LIST; do
6721     if enabled $thread; then
6722         test -n "$thread_type" &&
6723             die "ERROR: Only one thread type must be selected." ||
6724             thread_type="$thread"
6725     fi
6726 done
6727
6728 if disabled stdatomic; then
6729     if enabled atomics_gcc; then
6730         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6731     elif enabled atomics_win32; then
6732         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6733     elif enabled atomics_suncc; then
6734         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6735     elif enabled pthreads; then
6736         add_compat atomics/pthread/stdatomic.o
6737         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6738     else
6739         enabled threads && die "Threading is enabled, but no atomics are available"
6740         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6741     fi
6742 fi
6743
6744 # Check if requested libraries were found.
6745 for lib in $AUTODETECT_LIBS; do
6746     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6747 done
6748
6749 enabled zlib && add_cppflags -DZLIB_CONST
6750
6751 # conditional library dependencies, in linking order
6752 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6753 enabled afir_filter         && prepend avfilter_deps "avcodec"
6754 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6755 enabled aresample_filter    && prepend avfilter_deps "swresample"
6756 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6757 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6758 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6759 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6760 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6761 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6762 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6763 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6764 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6765 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6766 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6767 enabled pan_filter          && prepend avfilter_deps "swresample"
6768 enabled pp_filter           && prepend avfilter_deps "postproc"
6769 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6770 enabled resample_filter && prepend avfilter_deps "avresample"
6771 enabled sab_filter          && prepend avfilter_deps "swscale"
6772 enabled scale_filter    && prepend avfilter_deps "swscale"
6773 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6774 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6775 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6776 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6777 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6778 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6779 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6780 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6781 enabled spp_filter          && prepend avfilter_deps "avcodec"
6782 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6783 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6784 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6785
6786 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6787
6788 #FIXME
6789 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6790
6791 enabled opus_decoder    && prepend avcodec_deps "swresample"
6792
6793 expand_deps(){
6794     lib_deps=${1}_deps
6795     eval "deps=\$$lib_deps"
6796     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6797     unique $lib_deps
6798 }
6799
6800 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6801 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6802
6803 map 'expand_deps $v' $LIBRARY_LIST
6804
6805 if test "$quiet" != "yes"; then
6806
6807 echo "install prefix            $prefix"
6808 echo "source path               $source_path"
6809 echo "C compiler                $cc"
6810 echo "C library                 $libc_type"
6811 if test "$host_cc" != "$cc"; then
6812     echo "host C compiler           $host_cc"
6813     echo "host C library            $host_libc_type"
6814 fi
6815 echo "ARCH                      $arch ($cpu)"
6816 if test "$build_suffix" != ""; then
6817     echo "build suffix              $build_suffix"
6818 fi
6819 if test "$progs_suffix" != ""; then
6820     echo "progs suffix              $progs_suffix"
6821 fi
6822 if test "$extra_version" != ""; then
6823     echo "version string suffix     $extra_version"
6824 fi
6825 echo "big-endian                ${bigendian-no}"
6826 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6827 if enabled x86; then
6828     echo "standalone assembly       ${x86asm-no}"
6829     echo "x86 assembler             ${x86asmexe}"
6830     echo "MMX enabled               ${mmx-no}"
6831     echo "MMXEXT enabled            ${mmxext-no}"
6832     echo "3DNow! enabled            ${amd3dnow-no}"
6833     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6834     echo "SSE enabled               ${sse-no}"
6835     echo "SSSE3 enabled             ${ssse3-no}"
6836     echo "AESNI enabled             ${aesni-no}"
6837     echo "AVX enabled               ${avx-no}"
6838     echo "AVX2 enabled              ${avx2-no}"
6839     echo "AVX-512 enabled           ${avx512-no}"
6840     echo "XOP enabled               ${xop-no}"
6841     echo "FMA3 enabled              ${fma3-no}"
6842     echo "FMA4 enabled              ${fma4-no}"
6843     echo "i686 features enabled     ${i686-no}"
6844     echo "CMOV is fast              ${fast_cmov-no}"
6845     echo "EBX available             ${ebx_available-no}"
6846     echo "EBP available             ${ebp_available-no}"
6847 fi
6848 if enabled aarch64; then
6849     echo "NEON enabled              ${neon-no}"
6850     echo "VFP enabled               ${vfp-no}"
6851 fi
6852 if enabled arm; then
6853     echo "ARMv5TE enabled           ${armv5te-no}"
6854     echo "ARMv6 enabled             ${armv6-no}"
6855     echo "ARMv6T2 enabled           ${armv6t2-no}"
6856     echo "VFP enabled               ${vfp-no}"
6857     echo "NEON enabled              ${neon-no}"
6858     echo "THUMB enabled             ${thumb-no}"
6859 fi
6860 if enabled mips; then
6861     echo "MIPS FPU enabled          ${mipsfpu-no}"
6862     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6863     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6864     echo "MIPS MSA enabled          ${msa-no}"
6865     echo "LOONGSON MMI enabled      ${mmi-no}"
6866 fi
6867 if enabled ppc; then
6868     echo "AltiVec enabled           ${altivec-no}"
6869     echo "VSX enabled               ${vsx-no}"
6870     echo "POWER8 enabled            ${power8-no}"
6871     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6872     echo "dcbzl available           ${dcbzl-no}"
6873 fi
6874 echo "debug symbols             ${debug-no}"
6875 echo "strip symbols             ${stripping-no}"
6876 echo "optimize for size         ${small-no}"
6877 echo "optimizations             ${optimizations-no}"
6878 echo "static                    ${static-no}"
6879 echo "shared                    ${shared-no}"
6880 echo "postprocessing support    ${postproc-no}"
6881 echo "network support           ${network-no}"
6882 echo "threading support         ${thread_type-no}"
6883 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6884 echo "texi2html enabled         ${texi2html-no}"
6885 echo "perl enabled              ${perl-no}"
6886 echo "pod2man enabled           ${pod2man-no}"
6887 echo "makeinfo enabled          ${makeinfo-no}"
6888 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6889 test -n "$random_seed" &&
6890     echo "random seed               ${random_seed}"
6891 echo
6892
6893 echo "External libraries:"
6894 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6895 echo
6896
6897 echo "External libraries providing hardware acceleration:"
6898 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6899 echo
6900
6901 echo "Libraries:"
6902 print_enabled '' $LIBRARY_LIST | print_in_columns
6903 echo
6904
6905 echo "Programs:"
6906 print_enabled '' $PROGRAM_LIST | print_in_columns
6907 echo
6908
6909 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6910     echo "Enabled ${type}s:"
6911     eval list=\$$(toupper $type)_LIST
6912     print_enabled '_*' $list | print_in_columns
6913     echo
6914 done
6915
6916 if test -n "$ignore_tests"; then
6917     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6918     echo "Ignored FATE tests:"
6919     echo $ignore_tests | print_in_columns
6920     echo
6921 fi
6922
6923 echo "License: $license"
6924
6925 fi # test "$quiet" != "yes"
6926
6927 if test -n "$WARNINGS"; then
6928     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6929     enabled fatal_warnings && exit 1
6930 fi
6931
6932 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6933
6934 esc(){
6935     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6936 }
6937
6938 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6939
6940 enabled stripping || strip="echo skipping strip"
6941 enabled stripping || striptype=""
6942
6943 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6944
6945 cat > ffbuild/config.mak <<EOF
6946 # Automatically generated by configure - do not modify!
6947 ifndef FFMPEG_CONFIG_MAK
6948 FFMPEG_CONFIG_MAK=1
6949 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6950 prefix=$prefix
6951 LIBDIR=\$(DESTDIR)$libdir
6952 SHLIBDIR=\$(DESTDIR)$shlibdir
6953 INCDIR=\$(DESTDIR)$incdir
6954 BINDIR=\$(DESTDIR)$bindir
6955 DATADIR=\$(DESTDIR)$datadir
6956 DOCDIR=\$(DESTDIR)$docdir
6957 MANDIR=\$(DESTDIR)$mandir
6958 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6959 INSTALL_NAME_DIR=$install_name_dir
6960 SRC_PATH=$source_path
6961 SRC_LINK=$source_link
6962 ifndef MAIN_MAKEFILE
6963 SRC_PATH:=\$(SRC_PATH:.%=..%)
6964 endif
6965 CC_IDENT=$cc_ident
6966 ARCH=$arch
6967 INTRINSICS=$intrinsics
6968 EXTERN_PREFIX=$extern_prefix
6969 CC=$cc
6970 CXX=$cxx
6971 AS=$as
6972 OBJCC=$objcc
6973 LD=$ld
6974 DEPCC=$dep_cc
6975 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6976 DEPAS=$as
6977 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6978 X86ASM=$x86asmexe
6979 DEPX86ASM=$x86asmexe
6980 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6981 AR=$ar
6982 ARFLAGS=$arflags
6983 AR_O=$ar_o
6984 AR_CMD=$ar
6985 NM_CMD=$nm
6986 RANLIB=$ranlib
6987 STRIP=$strip
6988 STRIPTYPE=$striptype
6989 NVCC=$nvcc
6990 CP=cp -p
6991 LN_S=$ln_s
6992 CPPFLAGS=$CPPFLAGS
6993 CFLAGS=$CFLAGS
6994 CXXFLAGS=$CXXFLAGS
6995 OBJCFLAGS=$OBJCFLAGS
6996 ASFLAGS=$ASFLAGS
6997 NVCCFLAGS=$nvccflags
6998 AS_C=$AS_C
6999 AS_O=$AS_O
7000 OBJCC_C=$OBJCC_C
7001 OBJCC_E=$OBJCC_E
7002 OBJCC_O=$OBJCC_O
7003 CC_C=$CC_C
7004 CC_E=$CC_E
7005 CC_O=$CC_O
7006 CXX_C=$CXX_C
7007 CXX_O=$CXX_O
7008 NVCC_C=$NVCC_C
7009 NVCC_O=$NVCC_O
7010 LD_O=$LD_O
7011 X86ASM_O=$X86ASM_O
7012 LD_LIB=$LD_LIB
7013 LD_PATH=$LD_PATH
7014 DLLTOOL=$dlltool
7015 WINDRES=$windres
7016 DEPWINDRES=$dep_cc
7017 DOXYGEN=$doxygen
7018 LDFLAGS=$LDFLAGS
7019 LDEXEFLAGS=$LDEXEFLAGS
7020 LDSOFLAGS=$LDSOFLAGS
7021 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7022 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7023 X86ASMFLAGS=$X86ASMFLAGS
7024 BUILDSUF=$build_suffix
7025 PROGSSUF=$progs_suffix
7026 FULLNAME=$FULLNAME
7027 LIBPREF=$LIBPREF
7028 LIBSUF=$LIBSUF
7029 LIBNAME=$LIBNAME
7030 SLIBPREF=$SLIBPREF
7031 SLIBSUF=$SLIBSUF
7032 EXESUF=$EXESUF
7033 EXTRA_VERSION=$extra_version
7034 CCDEP=$CCDEP
7035 CXXDEP=$CXXDEP
7036 CCDEP_FLAGS=$CCDEP_FLAGS
7037 ASDEP=$ASDEP
7038 ASDEP_FLAGS=$ASDEP_FLAGS
7039 X86ASMDEP=$X86ASMDEP
7040 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7041 CC_DEPFLAGS=$CC_DEPFLAGS
7042 AS_DEPFLAGS=$AS_DEPFLAGS
7043 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7044 HOSTCC=$host_cc
7045 HOSTLD=$host_ld
7046 HOSTCFLAGS=$host_cflags
7047 HOSTCPPFLAGS=$host_cppflags
7048 HOSTEXESUF=$HOSTEXESUF
7049 HOSTLDFLAGS=$host_ldflags
7050 HOSTEXTRALIBS=$host_extralibs
7051 DEPHOSTCC=$host_cc
7052 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7053 HOSTCCDEP=$HOSTCCDEP
7054 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7055 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7056 HOSTCC_C=$HOSTCC_C
7057 HOSTCC_O=$HOSTCC_O
7058 HOSTLD_O=$HOSTLD_O
7059 TARGET_EXEC=$target_exec $target_exec_args
7060 TARGET_PATH=$target_path
7061 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7062 CFLAGS-ffplay=${sdl2_cflags}
7063 CFLAGS_HEADERS=$CFLAGS_HEADERS
7064 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7065 EXTRALIBS=$extralibs
7066 COMPAT_OBJS=$compat_objs
7067 INSTALL=$install
7068 LIBTARGET=${LIBTARGET}
7069 SLIBNAME=${SLIBNAME}
7070 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7071 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7072 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7073 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7074 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7075 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7076 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7077 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7078 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7079 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7080 NOREDZONE_FLAGS=$noredzone_flags
7081 LIBFUZZER_PATH=$libfuzzer_path
7082 IGNORE_TESTS=$ignore_tests
7083 EOF
7084
7085 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7086
7087 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7088     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7089 done
7090
7091 cat > $TMPH <<EOF
7092 /* Automatically generated by configure - do not modify! */
7093 #ifndef FFMPEG_CONFIG_H
7094 #define FFMPEG_CONFIG_H
7095 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7096 #define FFMPEG_LICENSE "$(c_escape $license)"
7097 #define CONFIG_THIS_YEAR 2018
7098 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7099 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7100 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7101 #define av_restrict $restrict_keyword
7102 #define EXTERN_PREFIX "${extern_prefix}"
7103 #define EXTERN_ASM ${extern_prefix}
7104 #define BUILDSUF "$build_suffix"
7105 #define SLIBSUF "$SLIBSUF"
7106 #define HAVE_MMX2 HAVE_MMXEXT
7107 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7108 EOF
7109
7110 test -n "$assert_level" &&
7111     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7112
7113 test -n "$malloc_prefix" &&
7114     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7115
7116 if enabled x86asm; then
7117     append config_files $TMPASM
7118     cat > $TMPASM <<EOF
7119 ; Automatically generated by configure - do not modify!
7120 EOF
7121 fi
7122
7123 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7124
7125
7126 mkdir -p doc
7127 mkdir -p tests
7128 mkdir -p tests/api
7129 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7130
7131 print_config ARCH_   "$config_files" $ARCH_LIST
7132 print_config HAVE_   "$config_files" $HAVE_LIST
7133 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7134                                      $CONFIG_EXTRA      \
7135                                      $ALL_COMPONENTS    \
7136
7137 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7138 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7139
7140 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7141 cp_if_changed $TMPH config.h
7142 touch ffbuild/.config
7143
7144 enabled x86asm && cp_if_changed $TMPASM config.asm
7145
7146 cat > $TMPH <<EOF
7147 /* Generated by ffmpeg configure */
7148 #ifndef AVUTIL_AVCONFIG_H
7149 #define AVUTIL_AVCONFIG_H
7150 EOF
7151
7152 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7153
7154 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7155
7156 cp_if_changed $TMPH libavutil/avconfig.h
7157
7158 full_filter_name(){
7159     sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_$1;/\1_$1/p" $source_path/libavfilter/allfilters.c
7160 }
7161
7162 # generate the lists of enabled components
7163 print_enabled_components(){
7164     file=$1
7165     struct_name=$2
7166     name=$3
7167     shift 3
7168     echo "static const $struct_name * const $name[] = {" > $TMPH
7169     for c in $*; do
7170         if enabled $c; then
7171             case $name in
7172                 filter_list)
7173                     c=$(full_filter_name $(remove_suffix _filter $c))
7174                 ;;
7175                 indev_list)
7176                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7177                 ;;
7178                 outdev_list)
7179                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7180                 ;;
7181             esac
7182             printf "    &ff_%s,\n" $c >> $TMPH
7183         fi
7184     done
7185     if [ "$name" == "filter_list" ]; then
7186         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7187             printf "    &ff_%s,\n" $c >> $TMPH
7188         done
7189     fi
7190     echo "    NULL };" >> $TMPH
7191     cp_if_changed $TMPH $file
7192 }
7193
7194 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7195 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7196 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7197 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7198 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7199 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7200 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7201 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7202 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7203
7204 # Settings for pkg-config files
7205
7206 cat > $TMPH <<EOF
7207 # Automatically generated by configure - do not modify!
7208 shared=$shared
7209 build_suffix=$build_suffix
7210 prefix=$prefix
7211 libdir=$libdir
7212 incdir=$incdir
7213 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7214 source_path=${source_path}
7215 LIBPREF=${LIBPREF}
7216 LIBSUF=${LIBSUF}
7217 extralibs_avutil="$avutil_extralibs"
7218 extralibs_avcodec="$avcodec_extralibs"
7219 extralibs_avformat="$avformat_extralibs"
7220 extralibs_avdevice="$avdevice_extralibs"
7221 extralibs_avfilter="$avfilter_extralibs"
7222 extralibs_avresample="$avresample_extralibs"
7223 extralibs_postproc="$postproc_extralibs"
7224 extralibs_swscale="$swscale_extralibs"
7225 extralibs_swresample="$swresample_extralibs"
7226 EOF
7227
7228 for lib in $LIBRARY_LIST; do
7229     lib_deps="$(eval echo \$${lib}_deps)"
7230     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7231 done
7232
7233 cp_if_changed $TMPH ffbuild/config.sh