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     linux_perf_event_h
2020     machine_ioctl_bt848_h
2021     machine_ioctl_meteor_h
2022     malloc_h
2023     opencv2_core_core_c_h
2024     OpenGL_gl3_h
2025     poll_h
2026     sys_param_h
2027     sys_resource_h
2028     sys_select_h
2029     sys_soundcard_h
2030     sys_time_h
2031     sys_un_h
2032     sys_videoio_h
2033     termios_h
2034     udplite_h
2035     unistd_h
2036     valgrind_valgrind_h
2037     windows_h
2038     winsock2_h
2039 "
2040
2041 INTRINSICS_LIST="
2042     intrinsics_neon
2043 "
2044
2045 COMPLEX_FUNCS="
2046     cabs
2047     cexp
2048 "
2049
2050 MATH_FUNCS="
2051     atanf
2052     atan2f
2053     cbrt
2054     cbrtf
2055     copysign
2056     cosf
2057     erf
2058     exp2
2059     exp2f
2060     expf
2061     hypot
2062     isfinite
2063     isinf
2064     isnan
2065     ldexpf
2066     llrint
2067     llrintf
2068     log2
2069     log2f
2070     log10f
2071     lrint
2072     lrintf
2073     powf
2074     rint
2075     round
2076     roundf
2077     sinf
2078     trunc
2079     truncf
2080 "
2081
2082 SYSTEM_FEATURES="
2083     dos_paths
2084     libc_msvcrt
2085     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2086     section_data_rel_ro
2087     threads
2088     uwp
2089     winrt
2090 "
2091
2092 SYSTEM_FUNCS="
2093     access
2094     aligned_malloc
2095     arc4random
2096     clock_gettime
2097     closesocket
2098     CommandLineToArgvW
2099     fcntl
2100     getaddrinfo
2101     gethrtime
2102     getopt
2103     GetProcessAffinityMask
2104     GetProcessMemoryInfo
2105     GetProcessTimes
2106     getrusage
2107     GetSystemTimeAsFileTime
2108     gettimeofday
2109     glob
2110     glXGetProcAddress
2111     gmtime_r
2112     inet_aton
2113     isatty
2114     kbhit
2115     localtime_r
2116     lstat
2117     lzo1x_999_compress
2118     mach_absolute_time
2119     MapViewOfFile
2120     memalign
2121     mkstemp
2122     mmap
2123     mprotect
2124     nanosleep
2125     PeekNamedPipe
2126     posix_memalign
2127     pthread_cancel
2128     sched_getaffinity
2129     SecItemImport
2130     SetConsoleTextAttribute
2131     SetConsoleCtrlHandler
2132     setmode
2133     setrlimit
2134     Sleep
2135     strerror_r
2136     sysconf
2137     sysctl
2138     usleep
2139     UTGetOSTypeFromString
2140     VirtualAlloc
2141     wglGetProcAddress
2142 "
2143
2144 SYSTEM_LIBRARIES="
2145     bcrypt
2146     vaapi_drm
2147     vaapi_x11
2148     vdpau_x11
2149 "
2150
2151 TOOLCHAIN_FEATURES="
2152     as_arch_directive
2153     as_dn_directive
2154     as_fpu_directive
2155     as_func
2156     as_object_arch
2157     asm_mod_q
2158     blocks_extension
2159     ebp_available
2160     ebx_available
2161     gnu_as
2162     gnu_windres
2163     ibm_asm
2164     inline_asm_direct_symbol_refs
2165     inline_asm_labels
2166     inline_asm_nonlocal_labels
2167     pragma_deprecated
2168     rsync_contimeout
2169     symver_asm_label
2170     symver_gnu_asm
2171     vfp_args
2172     xform_asm
2173     xmm_clobbers
2174 "
2175
2176 TYPES_LIST="
2177     kCMVideoCodecType_HEVC
2178     socklen_t
2179     struct_addrinfo
2180     struct_group_source_req
2181     struct_ip_mreq_source
2182     struct_ipv6_mreq
2183     struct_msghdr_msg_flags
2184     struct_pollfd
2185     struct_rusage_ru_maxrss
2186     struct_sctp_event_subscribe
2187     struct_sockaddr_in6
2188     struct_sockaddr_sa_len
2189     struct_sockaddr_storage
2190     struct_stat_st_mtim_tv_nsec
2191     struct_v4l2_frmivalenum_discrete
2192 "
2193
2194 HAVE_LIST="
2195     $ARCH_EXT_LIST
2196     $(add_suffix _external $ARCH_EXT_LIST)
2197     $(add_suffix _inline   $ARCH_EXT_LIST)
2198     $ARCH_FEATURES
2199     $BUILTIN_LIST
2200     $COMPLEX_FUNCS
2201     $HAVE_LIST_CMDLINE
2202     $HAVE_LIST_PUB
2203     $HEADERS_LIST
2204     $INTRINSICS_LIST
2205     $MATH_FUNCS
2206     $SYSTEM_FEATURES
2207     $SYSTEM_FUNCS
2208     $SYSTEM_LIBRARIES
2209     $THREADS_LIST
2210     $TOOLCHAIN_FEATURES
2211     $TYPES_LIST
2212     makeinfo
2213     makeinfo_html
2214     opencl_d3d11
2215     opencl_drm_arm
2216     opencl_drm_beignet
2217     opencl_dxva2
2218     opencl_vaapi_beignet
2219     opencl_vaapi_intel_media
2220     perl
2221     pod2man
2222     texi2html
2223 "
2224
2225 # options emitted with CONFIG_ prefix but not available on the command line
2226 CONFIG_EXTRA="
2227     aandcttables
2228     ac3dsp
2229     adts_header
2230     audio_frame_queue
2231     audiodsp
2232     blockdsp
2233     bswapdsp
2234     cabac
2235     cbs
2236     cbs_h264
2237     cbs_h265
2238     cbs_mpeg2
2239     dirac_parse
2240     dvprofile
2241     exif
2242     faandct
2243     faanidct
2244     fdctdsp
2245     flacdsp
2246     fmtconvert
2247     frame_thread_encoder
2248     g722dsp
2249     golomb
2250     gplv3
2251     h263dsp
2252     h264chroma
2253     h264dsp
2254     h264parse
2255     h264pred
2256     h264qpel
2257     hevcparse
2258     hpeldsp
2259     huffman
2260     huffyuvdsp
2261     huffyuvencdsp
2262     idctdsp
2263     iirfilter
2264     mdct15
2265     intrax8
2266     iso_media
2267     ividsp
2268     jpegtables
2269     lgplv3
2270     libx262
2271     llauddsp
2272     llviddsp
2273     llvidencdsp
2274     lpc
2275     lzf
2276     me_cmp
2277     mpeg_er
2278     mpegaudio
2279     mpegaudiodsp
2280     mpegaudioheader
2281     mpegvideo
2282     mpegvideoenc
2283     mss34dsp
2284     pixblockdsp
2285     qpeldsp
2286     qsv
2287     qsvdec
2288     qsvenc
2289     qsvvpp
2290     rangecoder
2291     riffdec
2292     riffenc
2293     rtpdec
2294     rtpenc_chain
2295     rv34dsp
2296     sinewin
2297     snappy
2298     srtp
2299     startcode
2300     texturedsp
2301     texturedspenc
2302     tpeldsp
2303     vaapi_1
2304     vaapi_encode
2305     vc1dsp
2306     videodsp
2307     vp3dsp
2308     vp56dsp
2309     vp8dsp
2310     wma_freqs
2311     wmv2dsp
2312 "
2313
2314 CMDLINE_SELECT="
2315     $ARCH_EXT_LIST
2316     $CONFIG_LIST
2317     $HAVE_LIST_CMDLINE
2318     $THREADS_LIST
2319     asm
2320     cross_compile
2321     debug
2322     extra_warnings
2323     logging
2324     lto
2325     optimizations
2326     rpath
2327     stripping
2328 "
2329
2330 PATHS_LIST="
2331     bindir
2332     datadir
2333     docdir
2334     incdir
2335     libdir
2336     mandir
2337     pkgconfigdir
2338     prefix
2339     shlibdir
2340     install_name_dir
2341 "
2342
2343 CMDLINE_SET="
2344     $PATHS_LIST
2345     ar
2346     arch
2347     as
2348     assert_level
2349     build_suffix
2350     cc
2351     objcc
2352     cpu
2353     cross_prefix
2354     custom_allocator
2355     cxx
2356     dep_cc
2357     doxygen
2358     env
2359     extra_version
2360     gas
2361     host_cc
2362     host_cflags
2363     host_extralibs
2364     host_ld
2365     host_ldflags
2366     host_os
2367     ignore_tests
2368     install
2369     ld
2370     ln_s
2371     logfile
2372     malloc_prefix
2373     nm
2374     optflags
2375     nvcc
2376     nvccflags
2377     pkg_config
2378     pkg_config_flags
2379     progs_suffix
2380     random_seed
2381     ranlib
2382     samples
2383     strip
2384     sws_max_filter_size
2385     sysinclude
2386     sysroot
2387     target_exec
2388     target_os
2389     target_path
2390     target_samples
2391     tempprefix
2392     toolchain
2393     valgrind
2394     x86asmexe
2395 "
2396
2397 CMDLINE_APPEND="
2398     extra_cflags
2399     extra_cxxflags
2400     extra_objcflags
2401     host_cppflags
2402 "
2403
2404 # code dependency declarations
2405
2406 # architecture extensions
2407
2408 armv5te_deps="arm"
2409 armv6_deps="arm"
2410 armv6t2_deps="arm"
2411 armv8_deps="aarch64"
2412 neon_deps_any="aarch64 arm"
2413 intrinsics_neon_deps="neon"
2414 vfp_deps_any="aarch64 arm"
2415 vfpv3_deps="vfp"
2416 setend_deps="arm"
2417
2418 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2419
2420 altivec_deps="ppc"
2421 dcbzl_deps="ppc"
2422 ldbrx_deps="ppc"
2423 ppc4xx_deps="ppc"
2424 vsx_deps="altivec"
2425 power8_deps="vsx"
2426
2427 loongson2_deps="mips"
2428 loongson3_deps="mips"
2429 mips32r2_deps="mips"
2430 mips32r5_deps="mips"
2431 mips32r6_deps="mips"
2432 mips64r2_deps="mips"
2433 mips64r6_deps="mips"
2434 mipsfpu_deps="mips"
2435 mipsdsp_deps="mips"
2436 mipsdspr2_deps="mips"
2437 mmi_deps="mips"
2438 msa_deps="mipsfpu"
2439
2440 cpunop_deps="i686"
2441 x86_64_select="i686"
2442 x86_64_suggest="fast_cmov"
2443
2444 amd3dnow_deps="mmx"
2445 amd3dnowext_deps="amd3dnow"
2446 i686_deps="x86"
2447 mmx_deps="x86"
2448 mmxext_deps="mmx"
2449 sse_deps="mmxext"
2450 sse2_deps="sse"
2451 sse3_deps="sse2"
2452 ssse3_deps="sse3"
2453 sse4_deps="ssse3"
2454 sse42_deps="sse4"
2455 aesni_deps="sse42"
2456 avx_deps="sse42"
2457 xop_deps="avx"
2458 fma3_deps="avx"
2459 fma4_deps="avx"
2460 avx2_deps="avx"
2461 avx512_deps="avx2"
2462
2463 mmx_external_deps="x86asm"
2464 mmx_inline_deps="inline_asm x86"
2465 mmx_suggest="mmx_external mmx_inline"
2466
2467 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2468     eval dep=\$${ext}_deps
2469     eval ${ext}_external_deps='"${dep}_external"'
2470     eval ${ext}_inline_deps='"${dep}_inline"'
2471     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2472 done
2473
2474 aligned_stack_if_any="aarch64 ppc x86"
2475 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2476 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2477 fast_unaligned_if_any="aarch64 ppc x86"
2478 simd_align_16_if_any="altivec neon sse"
2479 simd_align_32_if_any="avx"
2480 simd_align_64_if_any="avx512"
2481
2482 # system capabilities
2483 linux_perf_deps="linux_perf_event_h"
2484 symver_if_any="symver_asm_label symver_gnu_asm"
2485 valgrind_backtrace_conflict="optimizations"
2486 valgrind_backtrace_deps="valgrind_valgrind_h"
2487
2488 # threading support
2489 atomics_gcc_if="sync_val_compare_and_swap"
2490 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2491 atomics_win32_if="MemoryBarrier"
2492 atomics_native_if_any="$ATOMICS_LIST"
2493 w32threads_deps="atomics_native"
2494 threads_if_any="$THREADS_LIST"
2495
2496 # subsystems
2497 cbs_h264_select="cbs golomb"
2498 cbs_h265_select="cbs golomb"
2499 cbs_mpeg2_select="cbs"
2500 dct_select="rdft"
2501 dirac_parse_select="golomb"
2502 error_resilience_select="me_cmp"
2503 faandct_deps="faan"
2504 faandct_select="fdctdsp"
2505 faanidct_deps="faan"
2506 faanidct_select="idctdsp"
2507 h264dsp_select="startcode"
2508 hevcparse_select="golomb"
2509 frame_thread_encoder_deps="encoders threads"
2510 intrax8_select="blockdsp idctdsp"
2511 mdct_select="fft"
2512 mdct15_select="fft"
2513 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2514 mpeg_er_select="error_resilience"
2515 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2516 mpegaudiodsp_select="dct"
2517 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2518 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2519 vc1dsp_select="h264chroma qpeldsp startcode"
2520 rdft_select="fft"
2521
2522 # decoders / encoders
2523 aac_decoder_select="adts_header mdct15 mdct sinewin"
2524 aac_fixed_decoder_select="adts_header mdct sinewin"
2525 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2526 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2527 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2528 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2529 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2530 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2531 adpcm_g722_decoder_select="g722dsp"
2532 adpcm_g722_encoder_select="g722dsp"
2533 aic_decoder_select="golomb idctdsp"
2534 alac_encoder_select="lpc"
2535 als_decoder_select="bswapdsp"
2536 amrnb_decoder_select="lsp"
2537 amrwb_decoder_select="lsp"
2538 amv_decoder_select="sp5x_decoder exif"
2539 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2540 ape_decoder_select="bswapdsp llauddsp"
2541 apng_decoder_deps="zlib"
2542 apng_encoder_deps="zlib"
2543 apng_encoder_select="llvidencdsp"
2544 aptx_decoder_select="audio_frame_queue"
2545 aptx_encoder_select="audio_frame_queue"
2546 aptx_hd_decoder_select="audio_frame_queue"
2547 aptx_hd_encoder_select="audio_frame_queue"
2548 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2549 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2550 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2551 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2552 atrac1_decoder_select="mdct sinewin"
2553 atrac3_decoder_select="mdct"
2554 atrac3p_decoder_select="mdct sinewin"
2555 avrn_decoder_select="exif jpegtables"
2556 bink_decoder_select="blockdsp hpeldsp"
2557 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2558 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2559 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2560 clearvideo_decoder_select="idctdsp"
2561 cllc_decoder_select="bswapdsp"
2562 comfortnoise_encoder_select="lpc"
2563 cook_decoder_select="audiodsp mdct sinewin"
2564 cscd_decoder_select="lzo"
2565 cscd_decoder_suggest="zlib"
2566 dca_decoder_select="mdct"
2567 dds_decoder_select="texturedsp"
2568 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2569 dnxhd_decoder_select="blockdsp idctdsp"
2570 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2571 dolby_e_decoder_select="mdct"
2572 dvvideo_decoder_select="dvprofile idctdsp"
2573 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2574 dxa_decoder_deps="zlib"
2575 dxv_decoder_select="lzf texturedsp"
2576 eac3_decoder_select="ac3_decoder"
2577 eac3_encoder_select="ac3_encoder"
2578 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2579 eatgq_decoder_select="aandcttables"
2580 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2581 exr_decoder_deps="zlib"
2582 ffv1_decoder_select="rangecoder"
2583 ffv1_encoder_select="rangecoder"
2584 ffvhuff_decoder_select="huffyuv_decoder"
2585 ffvhuff_encoder_select="huffyuv_encoder"
2586 fic_decoder_select="golomb"
2587 flac_decoder_select="flacdsp"
2588 flac_encoder_select="bswapdsp flacdsp lpc"
2589 flashsv2_decoder_deps="zlib"
2590 flashsv2_encoder_deps="zlib"
2591 flashsv_decoder_deps="zlib"
2592 flashsv_encoder_deps="zlib"
2593 flv_decoder_select="h263_decoder"
2594 flv_encoder_select="h263_encoder"
2595 fourxm_decoder_select="blockdsp bswapdsp"
2596 fraps_decoder_select="bswapdsp huffman"
2597 g2m_decoder_deps="zlib"
2598 g2m_decoder_select="blockdsp idctdsp jpegtables"
2599 g729_decoder_select="audiodsp"
2600 h261_decoder_select="mpegvideo"
2601 h261_encoder_select="aandcttables mpegvideoenc"
2602 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2603 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2604 h263i_decoder_select="h263_decoder"
2605 h263p_decoder_select="h263_decoder"
2606 h263p_encoder_select="h263_encoder"
2607 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2608 h264_decoder_suggest="error_resilience"
2609 hap_decoder_select="snappy texturedsp"
2610 hap_encoder_deps="libsnappy"
2611 hap_encoder_select="texturedspenc"
2612 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2613 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2614 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2615 iac_decoder_select="imc_decoder"
2616 imc_decoder_select="bswapdsp fft mdct sinewin"
2617 indeo3_decoder_select="hpeldsp"
2618 indeo4_decoder_select="ividsp"
2619 indeo5_decoder_select="ividsp"
2620 interplay_video_decoder_select="hpeldsp"
2621 jpegls_decoder_select="mjpeg_decoder"
2622 jv_decoder_select="blockdsp"
2623 lagarith_decoder_select="llviddsp"
2624 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2625 magicyuv_decoder_select="llviddsp"
2626 magicyuv_encoder_select="llvidencdsp"
2627 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2628 metasound_decoder_select="lsp mdct sinewin"
2629 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2630 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2631 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2632 mjpegb_decoder_select="mjpeg_decoder"
2633 mlp_decoder_select="mlp_parser"
2634 mlp_encoder_select="lpc"
2635 motionpixels_decoder_select="bswapdsp"
2636 mp1_decoder_select="mpegaudio"
2637 mp1float_decoder_select="mpegaudio"
2638 mp2_decoder_select="mpegaudio"
2639 mp2float_decoder_select="mpegaudio"
2640 mp3_decoder_select="mpegaudio"
2641 mp3adu_decoder_select="mpegaudio"
2642 mp3adufloat_decoder_select="mpegaudio"
2643 mp3float_decoder_select="mpegaudio"
2644 mp3on4_decoder_select="mpegaudio"
2645 mp3on4float_decoder_select="mpegaudio"
2646 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2647 mpc8_decoder_select="mpegaudiodsp"
2648 mpegvideo_decoder_select="mpegvideo"
2649 mpeg1video_decoder_select="mpegvideo"
2650 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2651 mpeg2video_decoder_select="mpegvideo"
2652 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2653 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2654 mpeg4_encoder_select="h263_encoder"
2655 msa1_decoder_select="mss34dsp"
2656 mscc_decoder_deps="zlib"
2657 msmpeg4v1_decoder_select="h263_decoder"
2658 msmpeg4v2_decoder_select="h263_decoder"
2659 msmpeg4v2_encoder_select="h263_encoder"
2660 msmpeg4v3_decoder_select="h263_decoder"
2661 msmpeg4v3_encoder_select="h263_encoder"
2662 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2663 mts2_decoder_select="mss34dsp"
2664 mxpeg_decoder_select="mjpeg_decoder"
2665 nellymoser_decoder_select="mdct sinewin"
2666 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2667 nuv_decoder_select="idctdsp lzo"
2668 on2avc_decoder_select="mdct"
2669 opus_decoder_deps="swresample"
2670 opus_decoder_select="mdct15"
2671 opus_encoder_select="audio_frame_queue mdct15"
2672 png_decoder_deps="zlib"
2673 png_encoder_deps="zlib"
2674 png_encoder_select="llvidencdsp"
2675 prores_decoder_select="blockdsp idctdsp"
2676 prores_encoder_select="fdctdsp"
2677 qcelp_decoder_select="lsp"
2678 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2679 ra_144_decoder_select="audiodsp"
2680 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2681 ralf_decoder_select="golomb"
2682 rawvideo_decoder_select="bswapdsp"
2683 rscc_decoder_deps="zlib"
2684 rtjpeg_decoder_select="me_cmp"
2685 rv10_decoder_select="h263_decoder"
2686 rv10_encoder_select="h263_encoder"
2687 rv20_decoder_select="h263_decoder"
2688 rv20_encoder_select="h263_encoder"
2689 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2690 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2691 screenpresso_decoder_deps="zlib"
2692 shorten_decoder_select="bswapdsp"
2693 sipr_decoder_select="lsp"
2694 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2695 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2696 sonic_decoder_select="golomb rangecoder"
2697 sonic_encoder_select="golomb rangecoder"
2698 sonic_ls_encoder_select="golomb rangecoder"
2699 sp5x_decoder_select="mjpeg_decoder"
2700 srgc_decoder_deps="zlib"
2701 svq1_decoder_select="hpeldsp"
2702 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2703 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2704 svq3_decoder_suggest="zlib"
2705 tak_decoder_select="audiodsp"
2706 tdsc_decoder_deps="zlib"
2707 tdsc_decoder_select="mjpeg_decoder"
2708 theora_decoder_select="vp3_decoder"
2709 thp_decoder_select="mjpeg_decoder"
2710 tiff_decoder_suggest="zlib lzma"
2711 tiff_encoder_suggest="zlib"
2712 truehd_decoder_select="mlp_parser"
2713 truehd_encoder_select="lpc"
2714 truemotion2_decoder_select="bswapdsp"
2715 truespeech_decoder_select="bswapdsp"
2716 tscc_decoder_deps="zlib"
2717 twinvq_decoder_select="mdct lsp sinewin"
2718 txd_decoder_select="texturedsp"
2719 utvideo_decoder_select="bswapdsp llviddsp"
2720 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2721 vble_decoder_select="llviddsp"
2722 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2723 vc1image_decoder_select="vc1_decoder"
2724 vorbis_decoder_select="mdct"
2725 vorbis_encoder_select="audio_frame_queue mdct"
2726 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2727 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2728 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2729 vp6a_decoder_select="vp6_decoder"
2730 vp6f_decoder_select="vp6_decoder"
2731 vp7_decoder_select="h264pred videodsp vp8dsp"
2732 vp8_decoder_select="h264pred videodsp vp8dsp"
2733 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2734 webp_decoder_select="vp8_decoder exif"
2735 wmalossless_decoder_select="llauddsp"
2736 wmapro_decoder_select="mdct sinewin wma_freqs"
2737 wmav1_decoder_select="mdct sinewin wma_freqs"
2738 wmav1_encoder_select="mdct sinewin wma_freqs"
2739 wmav2_decoder_select="mdct sinewin wma_freqs"
2740 wmav2_encoder_select="mdct sinewin wma_freqs"
2741 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2742 wmv1_decoder_select="h263_decoder"
2743 wmv1_encoder_select="h263_encoder"
2744 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2745 wmv2_encoder_select="h263_encoder wmv2dsp"
2746 wmv3_decoder_select="vc1_decoder"
2747 wmv3image_decoder_select="wmv3_decoder"
2748 xma1_decoder_select="wmapro_decoder"
2749 xma2_decoder_select="wmapro_decoder"
2750 zerocodec_decoder_deps="zlib"
2751 zlib_decoder_deps="zlib"
2752 zlib_encoder_deps="zlib"
2753 zmbv_decoder_deps="zlib"
2754 zmbv_encoder_deps="zlib"
2755
2756 # hardware accelerators
2757 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2758 cuda_deps="ffnvcodec"
2759 cuvid_deps="ffnvcodec"
2760 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2761 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2762 ffnvcodec_deps_any="libdl LoadLibrary"
2763 nvdec_deps="ffnvcodec"
2764 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2765 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2766 xvmc_deps="X11_extensions_XvMClib_h"
2767
2768 h263_vaapi_hwaccel_deps="vaapi"
2769 h263_vaapi_hwaccel_select="h263_decoder"
2770 h263_videotoolbox_hwaccel_deps="videotoolbox"
2771 h263_videotoolbox_hwaccel_select="h263_decoder"
2772 h264_d3d11va_hwaccel_deps="d3d11va"
2773 h264_d3d11va_hwaccel_select="h264_decoder"
2774 h264_d3d11va2_hwaccel_deps="d3d11va"
2775 h264_d3d11va2_hwaccel_select="h264_decoder"
2776 h264_dxva2_hwaccel_deps="dxva2"
2777 h264_dxva2_hwaccel_select="h264_decoder"
2778 h264_nvdec_hwaccel_deps="nvdec"
2779 h264_nvdec_hwaccel_select="h264_decoder"
2780 h264_vaapi_hwaccel_deps="vaapi"
2781 h264_vaapi_hwaccel_select="h264_decoder"
2782 h264_vdpau_hwaccel_deps="vdpau"
2783 h264_vdpau_hwaccel_select="h264_decoder"
2784 h264_videotoolbox_hwaccel_deps="videotoolbox"
2785 h264_videotoolbox_hwaccel_select="h264_decoder"
2786 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2787 hevc_d3d11va_hwaccel_select="hevc_decoder"
2788 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2789 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2790 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2791 hevc_dxva2_hwaccel_select="hevc_decoder"
2792 hevc_nvdec_hwaccel_deps="nvdec"
2793 hevc_nvdec_hwaccel_select="hevc_decoder"
2794 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2795 hevc_vaapi_hwaccel_select="hevc_decoder"
2796 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2797 hevc_vdpau_hwaccel_select="hevc_decoder"
2798 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2799 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2800 mjpeg_nvdec_hwaccel_deps="nvdec"
2801 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2802 mjpeg_vaapi_hwaccel_deps="vaapi"
2803 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2804 mpeg_xvmc_hwaccel_deps="xvmc"
2805 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2806 mpeg1_nvdec_hwaccel_deps="nvdec"
2807 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2808 mpeg1_vdpau_hwaccel_deps="vdpau"
2809 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2810 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2811 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2812 mpeg1_xvmc_hwaccel_deps="xvmc"
2813 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2814 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2815 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2816 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2817 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2818 mpeg2_dxva2_hwaccel_deps="dxva2"
2819 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2820 mpeg2_nvdec_hwaccel_deps="nvdec"
2821 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2822 mpeg2_vaapi_hwaccel_deps="vaapi"
2823 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2824 mpeg2_vdpau_hwaccel_deps="vdpau"
2825 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2826 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2827 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2828 mpeg2_xvmc_hwaccel_deps="xvmc"
2829 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2830 mpeg4_nvdec_hwaccel_deps="nvdec"
2831 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2832 mpeg4_vaapi_hwaccel_deps="vaapi"
2833 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2834 mpeg4_vdpau_hwaccel_deps="vdpau"
2835 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2836 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2837 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2838 vc1_d3d11va_hwaccel_deps="d3d11va"
2839 vc1_d3d11va_hwaccel_select="vc1_decoder"
2840 vc1_d3d11va2_hwaccel_deps="d3d11va"
2841 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2842 vc1_dxva2_hwaccel_deps="dxva2"
2843 vc1_dxva2_hwaccel_select="vc1_decoder"
2844 vc1_nvdec_hwaccel_deps="nvdec"
2845 vc1_nvdec_hwaccel_select="vc1_decoder"
2846 vc1_vaapi_hwaccel_deps="vaapi"
2847 vc1_vaapi_hwaccel_select="vc1_decoder"
2848 vc1_vdpau_hwaccel_deps="vdpau"
2849 vc1_vdpau_hwaccel_select="vc1_decoder"
2850 vp8_nvdec_hwaccel_deps="nvdec"
2851 vp8_nvdec_hwaccel_select="vp8_decoder"
2852 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2853 vp8_vaapi_hwaccel_select="vp8_decoder"
2854 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2855 vp9_d3d11va_hwaccel_select="vp9_decoder"
2856 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2857 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2858 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2859 vp9_dxva2_hwaccel_select="vp9_decoder"
2860 vp9_nvdec_hwaccel_deps="nvdec"
2861 vp9_nvdec_hwaccel_select="vp9_decoder"
2862 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2863 vp9_vaapi_hwaccel_select="vp9_decoder"
2864 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2865 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2866 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2867 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2868 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2869 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2870
2871 # hardware-accelerated codecs
2872 omx_deps="libdl pthreads"
2873 omx_rpi_select="omx"
2874 qsv_deps="libmfx"
2875 qsvdec_select="qsv"
2876 qsvenc_select="qsv"
2877 qsvvpp_select="qsv"
2878 vaapi_encode_deps="vaapi"
2879 v4l2_m2m_deps_any="linux_videodev2_h"
2880
2881 hwupload_cuda_filter_deps="ffnvcodec"
2882 scale_npp_filter_deps="ffnvcodec libnpp"
2883 scale_cuda_filter_deps="cuda_sdk"
2884 thumbnail_cuda_filter_deps="cuda_sdk"
2885
2886 amf_deps_any="libdl LoadLibrary"
2887 nvenc_deps="ffnvcodec"
2888 nvenc_deps_any="libdl LoadLibrary"
2889 nvenc_encoder_deps="nvenc"
2890
2891 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2892 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2893 h264_amf_encoder_deps="amf"
2894 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2895 h264_cuvid_decoder_deps="cuvid"
2896 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2897 h264_mediacodec_decoder_deps="mediacodec"
2898 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2899 h264_mmal_decoder_deps="mmal"
2900 h264_nvenc_encoder_deps="nvenc"
2901 h264_omx_encoder_deps="omx"
2902 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2903 h264_qsv_encoder_select="qsvenc"
2904 h264_rkmpp_decoder_deps="rkmpp"
2905 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2906 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2907 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2908 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2909 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2910 hevc_amf_encoder_deps="amf"
2911 hevc_cuvid_decoder_deps="cuvid"
2912 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2913 hevc_mediacodec_decoder_deps="mediacodec"
2914 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2915 hevc_nvenc_encoder_deps="nvenc"
2916 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2917 hevc_qsv_encoder_select="hevcparse qsvenc"
2918 hevc_rkmpp_decoder_deps="rkmpp"
2919 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2920 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2921 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2922 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2923 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2924 mjpeg_cuvid_decoder_deps="cuvid"
2925 mjpeg_qsv_encoder_deps="libmfx"
2926 mjpeg_qsv_encoder_select="qsvenc"
2927 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2928 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2929 mpeg1_cuvid_decoder_deps="cuvid"
2930 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2931 mpeg2_crystalhd_decoder_select="crystalhd"
2932 mpeg2_cuvid_decoder_deps="cuvid"
2933 mpeg2_mmal_decoder_deps="mmal"
2934 mpeg2_mediacodec_decoder_deps="mediacodec"
2935 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2936 mpeg2_qsv_encoder_select="qsvenc"
2937 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2938 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2939 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2940 mpeg4_crystalhd_decoder_select="crystalhd"
2941 mpeg4_cuvid_decoder_deps="cuvid"
2942 mpeg4_mediacodec_decoder_deps="mediacodec"
2943 mpeg4_mmal_decoder_deps="mmal"
2944 mpeg4_omx_encoder_deps="omx"
2945 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2946 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2947 msmpeg4_crystalhd_decoder_select="crystalhd"
2948 nvenc_h264_encoder_select="h264_nvenc_encoder"
2949 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2950 vc1_crystalhd_decoder_select="crystalhd"
2951 vc1_cuvid_decoder_deps="cuvid"
2952 vc1_mmal_decoder_deps="mmal"
2953 vc1_qsv_decoder_select="qsvdec vc1_parser"
2954 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2955 vp8_cuvid_decoder_deps="cuvid"
2956 vp8_mediacodec_decoder_deps="mediacodec"
2957 vp8_qsv_decoder_select="qsvdec vp8_parser"
2958 vp8_rkmpp_decoder_deps="rkmpp"
2959 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2960 vp8_vaapi_encoder_select="vaapi_encode"
2961 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2962 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2963 vp9_cuvid_decoder_deps="cuvid"
2964 vp9_mediacodec_decoder_deps="mediacodec"
2965 vp9_rkmpp_decoder_deps="rkmpp"
2966 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2967 vp9_vaapi_encoder_select="vaapi_encode"
2968 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2969 wmv3_crystalhd_decoder_select="crystalhd"
2970
2971 # parsers
2972 aac_parser_select="adts_header"
2973 h264_parser_select="golomb h264dsp h264parse"
2974 hevc_parser_select="hevcparse"
2975 mpegaudio_parser_select="mpegaudioheader"
2976 mpegvideo_parser_select="mpegvideo"
2977 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2978 vc1_parser_select="vc1dsp"
2979
2980 # bitstream_filters
2981 aac_adtstoasc_bsf_select="adts_header"
2982 filter_units_bsf_select="cbs"
2983 h264_metadata_bsf_deps="const_nan"
2984 h264_metadata_bsf_select="cbs_h264"
2985 h264_redundant_pps_bsf_select="cbs_h264"
2986 hevc_metadata_bsf_select="cbs_h265"
2987 mjpeg2jpeg_bsf_select="jpegtables"
2988 mpeg2_metadata_bsf_select="cbs_mpeg2"
2989 trace_headers_bsf_select="cbs"
2990
2991 # external libraries
2992 aac_at_decoder_deps="audiotoolbox"
2993 aac_at_decoder_select="aac_adtstoasc_bsf"
2994 ac3_at_decoder_deps="audiotoolbox"
2995 ac3_at_decoder_select="ac3_parser"
2996 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2997 alac_at_decoder_deps="audiotoolbox"
2998 amr_nb_at_decoder_deps="audiotoolbox"
2999 avisynth_deps_any="libdl LoadLibrary"
3000 avisynth_demuxer_deps="avisynth"
3001 avisynth_demuxer_select="riffdec"
3002 eac3_at_decoder_deps="audiotoolbox"
3003 eac3_at_decoder_select="ac3_parser"
3004 gsm_ms_at_decoder_deps="audiotoolbox"
3005 ilbc_at_decoder_deps="audiotoolbox"
3006 mp1_at_decoder_deps="audiotoolbox"
3007 mp2_at_decoder_deps="audiotoolbox"
3008 mp3_at_decoder_deps="audiotoolbox"
3009 mp1_at_decoder_select="mpegaudioheader"
3010 mp2_at_decoder_select="mpegaudioheader"
3011 mp3_at_decoder_select="mpegaudioheader"
3012 pcm_alaw_at_decoder_deps="audiotoolbox"
3013 pcm_mulaw_at_decoder_deps="audiotoolbox"
3014 qdmc_at_decoder_deps="audiotoolbox"
3015 qdm2_at_decoder_deps="audiotoolbox"
3016 aac_at_encoder_deps="audiotoolbox"
3017 aac_at_encoder_select="audio_frame_queue"
3018 alac_at_encoder_deps="audiotoolbox"
3019 alac_at_encoder_select="audio_frame_queue"
3020 ilbc_at_encoder_deps="audiotoolbox"
3021 ilbc_at_encoder_select="audio_frame_queue"
3022 pcm_alaw_at_encoder_deps="audiotoolbox"
3023 pcm_alaw_at_encoder_select="audio_frame_queue"
3024 pcm_mulaw_at_encoder_deps="audiotoolbox"
3025 pcm_mulaw_at_encoder_select="audio_frame_queue"
3026 chromaprint_muxer_deps="chromaprint"
3027 h264_videotoolbox_encoder_deps="pthreads"
3028 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3029 hevc_videotoolbox_encoder_deps="pthreads"
3030 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3031 libaom_av1_decoder_deps="libaom"
3032 libaom_av1_encoder_deps="libaom"
3033 libcelt_decoder_deps="libcelt"
3034 libcodec2_decoder_deps="libcodec2"
3035 libcodec2_encoder_deps="libcodec2"
3036 libfdk_aac_decoder_deps="libfdk_aac"
3037 libfdk_aac_encoder_deps="libfdk_aac"
3038 libfdk_aac_encoder_select="audio_frame_queue"
3039 libgme_demuxer_deps="libgme"
3040 libgsm_decoder_deps="libgsm"
3041 libgsm_encoder_deps="libgsm"
3042 libgsm_ms_decoder_deps="libgsm"
3043 libgsm_ms_encoder_deps="libgsm"
3044 libilbc_decoder_deps="libilbc"
3045 libilbc_encoder_deps="libilbc"
3046 libkvazaar_encoder_deps="libkvazaar"
3047 libmodplug_demuxer_deps="libmodplug"
3048 libmp3lame_encoder_deps="libmp3lame"
3049 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3050 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3051 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3052 libopencore_amrnb_encoder_select="audio_frame_queue"
3053 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3054 libopenh264_decoder_deps="libopenh264"
3055 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3056 libopenh264_encoder_deps="libopenh264"
3057 libopenjpeg_decoder_deps="libopenjpeg"
3058 libopenjpeg_encoder_deps="libopenjpeg"
3059 libopenmpt_demuxer_deps="libopenmpt"
3060 libopus_decoder_deps="libopus"
3061 libopus_encoder_deps="libopus"
3062 libopus_encoder_select="audio_frame_queue"
3063 librsvg_decoder_deps="librsvg"
3064 libshine_encoder_deps="libshine"
3065 libshine_encoder_select="audio_frame_queue"
3066 libspeex_decoder_deps="libspeex"
3067 libspeex_encoder_deps="libspeex"
3068 libspeex_encoder_select="audio_frame_queue"
3069 libtheora_encoder_deps="libtheora"
3070 libtwolame_encoder_deps="libtwolame"
3071 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3072 libvorbis_decoder_deps="libvorbis"
3073 libvorbis_encoder_deps="libvorbis libvorbisenc"
3074 libvorbis_encoder_select="audio_frame_queue"
3075 libvpx_vp8_decoder_deps="libvpx"
3076 libvpx_vp8_encoder_deps="libvpx"
3077 libvpx_vp9_decoder_deps="libvpx"
3078 libvpx_vp9_encoder_deps="libvpx"
3079 libwavpack_encoder_deps="libwavpack"
3080 libwavpack_encoder_select="audio_frame_queue"
3081 libwebp_encoder_deps="libwebp"
3082 libwebp_anim_encoder_deps="libwebp"
3083 libx262_encoder_deps="libx262"
3084 libx264_encoder_deps="libx264"
3085 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3086 libx264rgb_encoder_select="libx264_encoder"
3087 libx265_encoder_deps="libx265"
3088 libxavs_encoder_deps="libxavs"
3089 libxvid_encoder_deps="libxvid"
3090 libzvbi_teletext_decoder_deps="libzvbi"
3091 videotoolbox_suggest="coreservices"
3092 videotoolbox_deps="corefoundation coremedia corevideo"
3093 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3094
3095 # demuxers / muxers
3096 ac3_demuxer_select="ac3_parser"
3097 aiff_muxer_select="iso_media"
3098 asf_demuxer_select="riffdec"
3099 asf_o_demuxer_select="riffdec"
3100 asf_muxer_select="riffenc"
3101 asf_stream_muxer_select="asf_muxer"
3102 avi_demuxer_select="iso_media riffdec exif"
3103 avi_muxer_select="riffenc"
3104 caf_demuxer_select="iso_media riffdec"
3105 caf_muxer_select="iso_media"
3106 dash_muxer_select="mp4_muxer"
3107 dash_demuxer_deps="libxml2"
3108 dirac_demuxer_select="dirac_parser"
3109 dts_demuxer_select="dca_parser"
3110 dtshd_demuxer_select="dca_parser"
3111 dv_demuxer_select="dvprofile"
3112 dv_muxer_select="dvprofile"
3113 dxa_demuxer_select="riffdec"
3114 eac3_demuxer_select="ac3_parser"
3115 f4v_muxer_select="mov_muxer"
3116 fifo_muxer_deps="threads"
3117 flac_demuxer_select="flac_parser"
3118 hds_muxer_select="flv_muxer"
3119 hls_muxer_select="mpegts_muxer"
3120 hls_muxer_suggest="gcrypt openssl"
3121 image2_alias_pix_demuxer_select="image2_demuxer"
3122 image2_brender_pix_demuxer_select="image2_demuxer"
3123 ipod_muxer_select="mov_muxer"
3124 ismv_muxer_select="mov_muxer"
3125 matroska_audio_muxer_select="matroska_muxer"
3126 matroska_demuxer_select="iso_media riffdec"
3127 matroska_demuxer_suggest="bzlib lzo zlib"
3128 matroska_muxer_select="iso_media riffenc"
3129 mmf_muxer_select="riffenc"
3130 mov_demuxer_select="iso_media riffdec"
3131 mov_demuxer_suggest="zlib"
3132 mov_muxer_select="iso_media riffenc rtpenc_chain"
3133 mp3_demuxer_select="mpegaudio_parser"
3134 mp3_muxer_select="mpegaudioheader"
3135 mp4_muxer_select="mov_muxer"
3136 mpegts_demuxer_select="iso_media"
3137 mpegts_muxer_select="adts_muxer latm_muxer"
3138 mpegtsraw_demuxer_select="mpegts_demuxer"
3139 mxf_d10_muxer_select="mxf_muxer"
3140 mxf_opatom_muxer_select="mxf_muxer"
3141 nut_muxer_select="riffenc"
3142 nuv_demuxer_select="riffdec"
3143 oga_muxer_select="ogg_muxer"
3144 ogg_demuxer_select="dirac_parse"
3145 ogv_muxer_select="ogg_muxer"
3146 opus_muxer_select="ogg_muxer"
3147 psp_muxer_select="mov_muxer"
3148 rtp_demuxer_select="sdp_demuxer"
3149 rtp_muxer_select="golomb"
3150 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3151 rtsp_demuxer_select="http_protocol rtpdec"
3152 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3153 sap_demuxer_select="sdp_demuxer"
3154 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3155 sdp_demuxer_select="rtpdec"
3156 smoothstreaming_muxer_select="ismv_muxer"
3157 spdif_demuxer_select="adts_header"
3158 spdif_muxer_select="adts_header"
3159 spx_muxer_select="ogg_muxer"
3160 swf_demuxer_suggest="zlib"
3161 tak_demuxer_select="tak_parser"
3162 tg2_muxer_select="mov_muxer"
3163 tgp_muxer_select="mov_muxer"
3164 vobsub_demuxer_select="mpegps_demuxer"
3165 w64_demuxer_select="wav_demuxer"
3166 w64_muxer_select="wav_muxer"
3167 wav_demuxer_select="riffdec"
3168 wav_muxer_select="riffenc"
3169 webm_muxer_select="iso_media riffenc"
3170 webm_dash_manifest_demuxer_select="matroska_demuxer"
3171 wtv_demuxer_select="mpegts_demuxer riffdec"
3172 wtv_muxer_select="mpegts_muxer riffenc"
3173 xmv_demuxer_select="riffdec"
3174 xwma_demuxer_select="riffdec"
3175
3176 # indevs / outdevs
3177 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3178 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3179 alsa_indev_deps="alsa"
3180 alsa_outdev_deps="alsa"
3181 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3182 avfoundation_indev_suggest="coregraphics applicationservices"
3183 avfoundation_indev_extralibs="-framework Foundation"
3184 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3185 caca_outdev_deps="libcaca"
3186 decklink_deps_any="libdl LoadLibrary"
3187 decklink_indev_deps="decklink threads"
3188 decklink_indev_extralibs="-lstdc++"
3189 decklink_outdev_deps="decklink threads"
3190 decklink_outdev_extralibs="-lstdc++"
3191 libndi_newtek_indev_deps="libndi_newtek"
3192 libndi_newtek_indev_extralibs="-lndi"
3193 libndi_newtek_outdev_deps="libndi_newtek"
3194 libndi_newtek_outdev_extralibs="-lndi"
3195 dshow_indev_deps="IBaseFilter"
3196 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3197 fbdev_indev_deps="linux_fb_h"
3198 fbdev_outdev_deps="linux_fb_h"
3199 gdigrab_indev_deps="CreateDIBSection"
3200 gdigrab_indev_extralibs="-lgdi32"
3201 gdigrab_indev_select="bmp_decoder"
3202 iec61883_indev_deps="libiec61883"
3203 jack_indev_deps="libjack"
3204 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3205 kmsgrab_indev_deps="libdrm"
3206 lavfi_indev_deps="avfilter"
3207 libcdio_indev_deps="libcdio"
3208 libdc1394_indev_deps="libdc1394"
3209 openal_indev_deps="openal"
3210 opengl_outdev_deps="opengl"
3211 oss_indev_deps_any="sys_soundcard_h"
3212 oss_outdev_deps_any="sys_soundcard_h"
3213 pulse_indev_deps="libpulse"
3214 pulse_outdev_deps="libpulse"
3215 sdl2_outdev_deps="sdl2"
3216 sndio_indev_deps="sndio"
3217 sndio_outdev_deps="sndio"
3218 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3219 v4l2_indev_suggest="libv4l2"
3220 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3221 v4l2_outdev_suggest="libv4l2"
3222 vfwcap_indev_deps="vfw32 vfwcap_defines"
3223 xcbgrab_indev_deps="libxcb"
3224 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3225 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3226 xv_outdev_extralibs="-lXv -lX11 -lXext"
3227
3228 # protocols
3229 async_protocol_deps="threads"
3230 bluray_protocol_deps="libbluray"
3231 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3232 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3233 ffrtmpcrypt_protocol_select="tcp_protocol"
3234 ffrtmphttp_protocol_conflict="librtmp_protocol"
3235 ffrtmphttp_protocol_select="http_protocol"
3236 ftp_protocol_select="tcp_protocol"
3237 gopher_protocol_select="network"
3238 http_protocol_select="tcp_protocol"
3239 http_protocol_suggest="zlib"
3240 httpproxy_protocol_select="tcp_protocol"
3241 httpproxy_protocol_suggest="zlib"
3242 https_protocol_select="tls_protocol"
3243 https_protocol_suggest="zlib"
3244 icecast_protocol_select="http_protocol"
3245 librtmp_protocol_deps="librtmp"
3246 librtmpe_protocol_deps="librtmp"
3247 librtmps_protocol_deps="librtmp"
3248 librtmpt_protocol_deps="librtmp"
3249 librtmpte_protocol_deps="librtmp"
3250 libsmbclient_protocol_deps="libsmbclient gplv3"
3251 libssh_protocol_deps="libssh"
3252 libtls_conflict="openssl gnutls"
3253 mmsh_protocol_select="http_protocol"
3254 mmst_protocol_select="network"
3255 libsrt_protocol_deps="libsrt"
3256 libsrt_protocol_select="network"
3257 rtmp_protocol_conflict="librtmp_protocol"
3258 rtmp_protocol_select="tcp_protocol"
3259 rtmp_protocol_suggest="zlib"
3260 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3261 rtmpe_protocol_suggest="zlib"
3262 rtmps_protocol_conflict="librtmp_protocol"
3263 rtmps_protocol_select="tls_protocol"
3264 rtmps_protocol_suggest="zlib"
3265 rtmpt_protocol_select="ffrtmphttp_protocol"
3266 rtmpt_protocol_suggest="zlib"
3267 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3268 rtmpte_protocol_suggest="zlib"
3269 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3270 rtmpts_protocol_suggest="zlib"
3271 rtp_protocol_select="udp_protocol"
3272 schannel_conflict="openssl gnutls libtls"
3273 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3274 sctp_protocol_select="network"
3275 securetransport_conflict="openssl gnutls libtls"
3276 srtp_protocol_select="rtp_protocol srtp"
3277 tcp_protocol_select="network"
3278 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3279 tls_protocol_select="tcp_protocol"
3280 udp_protocol_select="network"
3281 udplite_protocol_select="network"
3282 unix_protocol_deps="sys_un_h"
3283 unix_protocol_select="network"
3284
3285 # filters
3286 afftfilt_filter_deps="avcodec"
3287 afftfilt_filter_select="fft"
3288 afir_filter_deps="avcodec"
3289 afir_filter_select="fft"
3290 amovie_filter_deps="avcodec avformat"
3291 aresample_filter_deps="swresample"
3292 ass_filter_deps="libass"
3293 atempo_filter_deps="avcodec"
3294 atempo_filter_select="rdft"
3295 avgblur_opencl_filter_deps="opencl"
3296 azmq_filter_deps="libzmq"
3297 blackframe_filter_deps="gpl"
3298 boxblur_filter_deps="gpl"
3299 bs2b_filter_deps="libbs2b"
3300 colormatrix_filter_deps="gpl"
3301 convolution_opencl_filter_deps="opencl"
3302 convolve_filter_deps="avcodec"
3303 convolve_filter_select="fft"
3304 coreimage_filter_deps="coreimage appkit"
3305 coreimage_filter_extralibs="-framework OpenGL"
3306 coreimagesrc_filter_deps="coreimage appkit"
3307 coreimagesrc_filter_extralibs="-framework OpenGL"
3308 cover_rect_filter_deps="avcodec avformat gpl"
3309 cropdetect_filter_deps="gpl"
3310 deconvolve_filter_deps="avcodec"
3311 deconvolve_filter_select="fft"
3312 deinterlace_qsv_filter_deps="libmfx"
3313 deinterlace_vaapi_filter_deps="vaapi"
3314 delogo_filter_deps="gpl"
3315 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3316 deshake_filter_select="pixelutils"
3317 drawtext_filter_deps="libfreetype"
3318 drawtext_filter_suggest="libfontconfig libfribidi"
3319 elbg_filter_deps="avcodec"
3320 eq_filter_deps="gpl"
3321 fftfilt_filter_deps="avcodec"
3322 fftfilt_filter_select="rdft"
3323 find_rect_filter_deps="avcodec avformat gpl"
3324 firequalizer_filter_deps="avcodec"
3325 firequalizer_filter_select="rdft"
3326 flite_filter_deps="libflite"
3327 framerate_filter_select="pixelutils"
3328 frei0r_filter_deps="frei0r libdl"
3329 frei0r_src_filter_deps="frei0r libdl"
3330 fspp_filter_deps="gpl"
3331 geq_filter_deps="gpl"
3332 histeq_filter_deps="gpl"
3333 hqdn3d_filter_deps="gpl"
3334 interlace_filter_deps="gpl"
3335 kerndeint_filter_deps="gpl"
3336 ladspa_filter_deps="ladspa libdl"
3337 lv2_filter_deps="lv2"
3338 mcdeint_filter_deps="avcodec gpl"
3339 movie_filter_deps="avcodec avformat"
3340 mpdecimate_filter_deps="gpl"
3341 mpdecimate_filter_select="pixelutils"
3342 mptestsrc_filter_deps="gpl"
3343 negate_filter_deps="lut_filter"
3344 nnedi_filter_deps="gpl"
3345 ocr_filter_deps="libtesseract"
3346 ocv_filter_deps="libopencv"
3347 openclsrc_filter_deps="opencl"
3348 overlay_opencl_filter_deps="opencl"
3349 overlay_qsv_filter_deps="libmfx"
3350 overlay_qsv_filter_select="qsvvpp"
3351 owdenoise_filter_deps="gpl"
3352 pan_filter_deps="swresample"
3353 perspective_filter_deps="gpl"
3354 phase_filter_deps="gpl"
3355 pp7_filter_deps="gpl"
3356 pp_filter_deps="gpl postproc"
3357 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3358 program_opencl_filter_deps="opencl"
3359 pullup_filter_deps="gpl"
3360 removelogo_filter_deps="avcodec avformat swscale"
3361 repeatfields_filter_deps="gpl"
3362 resample_filter_deps="avresample"
3363 rubberband_filter_deps="librubberband"
3364 sab_filter_deps="gpl swscale"
3365 scale2ref_filter_deps="swscale"
3366 scale_filter_deps="swscale"
3367 scale_qsv_filter_deps="libmfx"
3368 select_filter_select="pixelutils"
3369 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3370 showcqt_filter_deps="avcodec avformat swscale"
3371 showcqt_filter_suggest="libfontconfig libfreetype"
3372 showcqt_filter_select="fft"
3373 showfreqs_filter_deps="avcodec"
3374 showfreqs_filter_select="fft"
3375 showspectrum_filter_deps="avcodec"
3376 showspectrum_filter_select="fft"
3377 showspectrumpic_filter_deps="avcodec"
3378 showspectrumpic_filter_select="fft"
3379 signature_filter_deps="gpl avcodec avformat"
3380 smartblur_filter_deps="gpl swscale"
3381 sofalizer_filter_deps="libmysofa avcodec"
3382 sofalizer_filter_select="fft"
3383 spectrumsynth_filter_deps="avcodec"
3384 spectrumsynth_filter_select="fft"
3385 spp_filter_deps="gpl avcodec"
3386 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3387 stereo3d_filter_deps="gpl"
3388 subtitles_filter_deps="avformat avcodec libass"
3389 super2xsai_filter_deps="gpl"
3390 pixfmts_super2xsai_test_deps="super2xsai_filter"
3391 tinterlace_filter_deps="gpl"
3392 tinterlace_merge_test_deps="tinterlace_filter"
3393 tinterlace_pad_test_deps="tinterlace_filter"
3394 tonemap_filter_deps="const_nan"
3395 unsharp_opencl_filter_deps="opencl"
3396 uspp_filter_deps="gpl avcodec"
3397 vaguedenoiser_filter_deps="gpl"
3398 vidstabdetect_filter_deps="libvidstab"
3399 vidstabtransform_filter_deps="libvidstab"
3400 libvmaf_filter_deps="libvmaf pthreads"
3401 zmq_filter_deps="libzmq"
3402 zoompan_filter_deps="swscale"
3403 zscale_filter_deps="libzimg const_nan"
3404 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3405 vpp_qsv_filter_deps="libmfx"
3406 vpp_qsv_filter_select="qsvvpp"
3407
3408 # examples
3409 avio_dir_cmd_deps="avformat avutil"
3410 avio_reading_deps="avformat avcodec avutil"
3411 decode_audio_example_deps="avcodec avutil"
3412 decode_video_example_deps="avcodec avutil"
3413 demuxing_decoding_example_deps="avcodec avformat avutil"
3414 encode_audio_example_deps="avcodec avutil"
3415 encode_video_example_deps="avcodec avutil"
3416 extract_mvs_example_deps="avcodec avformat avutil"
3417 filter_audio_example_deps="avfilter avutil"
3418 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3419 filtering_video_example_deps="avfilter avcodec avformat avutil"
3420 http_multiclient_example_deps="avformat avutil fork"
3421 hw_decode_example_deps="avcodec avformat avutil"
3422 metadata_example_deps="avformat avutil"
3423 muxing_example_deps="avcodec avformat avutil swscale"
3424 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3425 remuxing_example_deps="avcodec avformat avutil"
3426 resampling_audio_example_deps="avutil swresample"
3427 scaling_video_example_deps="avutil swscale"
3428 transcode_aac_example_deps="avcodec avformat swresample"
3429 transcoding_example_deps="avfilter avcodec avformat avutil"
3430 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3431 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3432
3433 # EXTRALIBS_LIST
3434 cpu_init_extralibs="pthreads_extralibs"
3435 cws2fws_extralibs="zlib_extralibs"
3436
3437 # libraries, in linking order
3438 avcodec_deps="avutil"
3439 avcodec_suggest="libm"
3440 avcodec_select="null_bsf"
3441 avdevice_deps="avformat avcodec avutil"
3442 avdevice_suggest="libm"
3443 avfilter_deps="avutil"
3444 avfilter_suggest="libm"
3445 avformat_deps="avcodec avutil"
3446 avformat_suggest="libm network zlib"
3447 avresample_deps="avutil"
3448 avresample_suggest="libm"
3449 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3450 postproc_deps="avutil gpl"
3451 postproc_suggest="libm"
3452 swresample_deps="avutil"
3453 swresample_suggest="libm libsoxr"
3454 swscale_deps="avutil"
3455 swscale_suggest="libm"
3456
3457 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3458 avfilter_extralibs="pthreads_extralibs"
3459 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3460
3461 # programs
3462 ffmpeg_deps="avcodec avfilter avformat swresample"
3463 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3464                null_filter
3465                trim_filter"
3466 ffmpeg_suggest="ole32 psapi shell32"
3467 ffplay_deps="avcodec avformat swscale swresample sdl2"
3468 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3469 ffplay_suggest="shell32"
3470 ffprobe_deps="avcodec avformat"
3471 ffprobe_suggest="shell32"
3472
3473 # documentation
3474 podpages_deps="perl"
3475 manpages_deps="perl pod2man"
3476 htmlpages_deps="perl"
3477 htmlpages_deps_any="makeinfo_html texi2html"
3478 txtpages_deps="perl makeinfo"
3479 doc_deps_any="manpages htmlpages podpages txtpages"
3480
3481 # default parameters
3482
3483 logfile="ffbuild/config.log"
3484
3485 # installation paths
3486 prefix_default="/usr/local"
3487 bindir_default='${prefix}/bin'
3488 datadir_default='${prefix}/share/ffmpeg'
3489 docdir_default='${prefix}/share/doc/ffmpeg'
3490 incdir_default='${prefix}/include'
3491 libdir_default='${prefix}/lib'
3492 mandir_default='${prefix}/share/man'
3493
3494 # toolchain
3495 ar_default="ar"
3496 cc_default="gcc"
3497 cxx_default="g++"
3498 host_cc_default="gcc"
3499 doxygen_default="doxygen"
3500 install="install"
3501 ln_s_default="ln -s -f"
3502 nm_default="nm -g"
3503 pkg_config_default=pkg-config
3504 ranlib_default="ranlib"
3505 strip_default="strip"
3506 version_script='--version-script'
3507 objformat="elf32"
3508 x86asmexe_default="nasm"
3509 windres_default="windres"
3510 nvcc_default="nvcc"
3511 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3512 striptype="direct"
3513
3514 # OS
3515 target_os_default=$(tolower $(uname -s))
3516 host_os=$target_os_default
3517
3518 # machine
3519 if test "$target_os_default" = aix; then
3520     arch_default=$(uname -p)
3521     strip_default="strip -X32_64"
3522 else
3523     arch_default=$(uname -m)
3524 fi
3525 cpu="generic"
3526 intrinsics="none"
3527
3528 # configurable options
3529 enable $PROGRAM_LIST
3530 enable $DOCUMENT_LIST
3531 enable $EXAMPLE_LIST
3532 enable $(filter_out avresample $LIBRARY_LIST)
3533 enable stripping
3534
3535 enable asm
3536 enable debug
3537 enable doc
3538 enable faan faandct faanidct
3539 enable optimizations
3540 enable runtime_cpudetect
3541 enable safe_bitstream_reader
3542 enable static
3543 enable swscale_alpha
3544 enable valgrind_backtrace
3545
3546 sws_max_filter_size_default=256
3547 set_default sws_max_filter_size
3548
3549 # internal components are enabled by default
3550 enable $EXTRALIBS_LIST
3551
3552 # Avoid external, non-system, libraries getting enabled by dependency resolution
3553 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3554
3555 # build settings
3556 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3557 LIBPREF="lib"
3558 LIBSUF=".a"
3559 FULLNAME='$(NAME)$(BUILDSUF)'
3560 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3561 SLIBPREF="lib"
3562 SLIBSUF=".so"
3563 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3564 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3565 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3566 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3567 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3568 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3569 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3570
3571 asflags_filter=echo
3572 cflags_filter=echo
3573 ldflags_filter=echo
3574
3575 AS_C='-c'
3576 AS_O='-o $@'
3577 CC_C='-c'
3578 CC_E='-E -o $@'
3579 CC_O='-o $@'
3580 CXX_C='-c'
3581 CXX_O='-o $@'
3582 OBJCC_C='-c'
3583 OBJCC_E='-E -o $@'
3584 OBJCC_O='-o $@'
3585 X86ASM_O='-o $@'
3586 LD_O='-o $@'
3587 LD_LIB='-l%'
3588 LD_PATH='-L'
3589 HOSTCC_C='-c'
3590 HOSTCC_E='-E -o $@'
3591 HOSTCC_O='-o $@'
3592 HOSTLD_O='-o $@'
3593 NVCC_C='-c'
3594 NVCC_O='-o $@'
3595
3596 host_extralibs='-lm'
3597 host_cflags_filter=echo
3598 host_ldflags_filter=echo
3599
3600 target_path='$(CURDIR)'
3601
3602 # since the object filename is not given with the -MM flag, the compiler
3603 # is only able to print the basename, and we must add the path ourselves
3604 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3605 DEPFLAGS='-MM'
3606
3607 mkdir -p ffbuild
3608
3609 # find source path
3610 if test -f configure; then
3611     source_path=.
3612 else
3613     source_path=$(cd $(dirname "$0"); pwd)
3614     case "$source_path" in
3615         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3616     esac
3617     test -e "$source_path/config.h" &&
3618         die "Out of tree builds are impossible with config.h in source dir."
3619 fi
3620
3621 for v in "$@"; do
3622     r=${v#*=}
3623     l=${v%"$r"}
3624     r=$(sh_quote "$r")
3625     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3626 done
3627
3628 find_things_extern(){
3629     thing=$1
3630     pattern=$2
3631     file=$source_path/$3
3632     out=${4:-$thing}
3633     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3634 }
3635
3636 find_filters_extern(){
3637     file=$source_path/$1
3638     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3639     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3640 }
3641
3642 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3643 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3644 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3645 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3646 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3647 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3648 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3649 CODEC_LIST="
3650     $ENCODER_LIST
3651     $DECODER_LIST
3652 "
3653 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3654 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3655 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3656 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3657
3658 AVCODEC_COMPONENTS_LIST="
3659     $BSF_LIST
3660     $DECODER_LIST
3661     $ENCODER_LIST
3662     $HWACCEL_LIST
3663     $PARSER_LIST
3664 "
3665
3666 AVDEVICE_COMPONENTS_LIST="
3667     $INDEV_LIST
3668     $OUTDEV_LIST
3669 "
3670
3671 AVFILTER_COMPONENTS_LIST="
3672     $FILTER_LIST
3673 "
3674
3675 AVFORMAT_COMPONENTS_LIST="
3676     $DEMUXER_LIST
3677     $MUXER_LIST
3678     $PROTOCOL_LIST
3679 "
3680
3681 ALL_COMPONENTS="
3682     $AVCODEC_COMPONENTS_LIST
3683     $AVDEVICE_COMPONENTS_LIST
3684     $AVFILTER_COMPONENTS_LIST
3685     $AVFORMAT_COMPONENTS_LIST
3686 "
3687
3688 for n in $COMPONENT_LIST; do
3689     v=$(toupper ${n%s})_LIST
3690     eval enable \$$v
3691     eval ${n}_if_any="\$$v"
3692 done
3693
3694 enable $ARCH_EXT_LIST
3695
3696 die_unknown(){
3697     echo "Unknown option \"$1\"."
3698     echo "See $0 --help for available options."
3699     exit 1
3700 }
3701
3702 print_in_columns() {
3703     cols=$(expr $ncols / 24)
3704     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3705 }
3706
3707 show_list() {
3708     suffix=_$1
3709     shift
3710     echo $* | sed s/$suffix//g | print_in_columns
3711     exit 0
3712 }
3713
3714 rand_list(){
3715     IFS=', '
3716     set -- $*
3717     unset IFS
3718     for thing; do
3719         comp=${thing%:*}
3720         prob=${thing#$comp}
3721         prob=${prob#:}
3722         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3723         echo "prob ${prob:-0.5}"
3724         printf '%s\n' $comp
3725     done
3726 }
3727
3728 do_random(){
3729     action=$1
3730     shift
3731     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3732     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3733 }
3734
3735 for opt do
3736     optval="${opt#*=}"
3737     case "$opt" in
3738         --extra-ldflags=*)
3739             add_ldflags $optval
3740         ;;
3741         --extra-ldexeflags=*)
3742             add_ldexeflags $optval
3743         ;;
3744         --extra-ldsoflags=*)
3745             add_ldsoflags $optval
3746         ;;
3747         --extra-ldlibflags=*)
3748             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3749                  "removed in the future. Use --extra-ldsoflags instead."
3750             add_ldsoflags $optval
3751         ;;
3752         --extra-libs=*)
3753             add_extralibs $optval
3754         ;;
3755         --disable-devices)
3756             disable $INDEV_LIST $OUTDEV_LIST
3757         ;;
3758         --enable-debug=*)
3759             debuglevel="$optval"
3760         ;;
3761         --disable-programs)
3762             disable $PROGRAM_LIST
3763         ;;
3764         --disable-everything)
3765             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3766         ;;
3767         --disable-all)
3768             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3769             disable $LIBRARY_LIST $PROGRAM_LIST doc
3770             enable avutil
3771         ;;
3772         --enable-random|--disable-random)
3773             action=${opt%%-random}
3774             do_random ${action#--} $COMPONENT_LIST
3775         ;;
3776         --enable-random=*|--disable-random=*)
3777             action=${opt%%-random=*}
3778             do_random ${action#--} $optval
3779         ;;
3780         --enable-sdl)
3781             enable sdl2
3782         ;;
3783         --enable-*=*|--disable-*=*)
3784             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3785             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3786             eval list=\$$(toupper $thing)_LIST
3787             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3788             list=$(filter "$name" $list)
3789             [ "$list" = "" ] && warn "Option $opt did not match anything"
3790             $action $list
3791         ;;
3792         --enable-yasm|--disable-yasm)
3793             warn "The ${opt} option is only provided for compatibility and will be\n"\
3794                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3795             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3796         ;;
3797         --yasmexe=*)
3798             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3799                  "removed in the future. Use --x86asmexe instead."
3800             x86asmexe="$optval"
3801         ;;
3802         --enable-?*|--disable-?*)
3803             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3804             if is_in $option $COMPONENT_LIST; then
3805                 test $action = disable && action=unset
3806                 eval $action \$$(toupper ${option%s})_LIST
3807             elif is_in $option $CMDLINE_SELECT; then
3808                 $action $option
3809             else
3810                 die_unknown $opt
3811             fi
3812         ;;
3813         --list-*)
3814             NAME="${opt#--list-}"
3815             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3816             NAME=${NAME%s}
3817             eval show_list $NAME \$$(toupper $NAME)_LIST
3818         ;;
3819         --help|-h) show_help
3820         ;;
3821         --quiet|-q) quiet=yes
3822         ;;
3823         --fatal-warnings) enable fatal_warnings
3824         ;;
3825         --libfuzzer=*)
3826             libfuzzer_path="$optval"
3827         ;;
3828         *)
3829             optname="${opt%%=*}"
3830             optname="${optname#--}"
3831             optname=$(echo "$optname" | sed 's/-/_/g')
3832             if is_in $optname $CMDLINE_SET; then
3833                 eval $optname='$optval'
3834             elif is_in $optname $CMDLINE_APPEND; then
3835                 append $optname "$optval"
3836             else
3837                 die_unknown $opt
3838             fi
3839         ;;
3840     esac
3841 done
3842
3843 for e in $env; do
3844     eval "export $e"
3845 done
3846
3847 if disabled autodetect; then
3848
3849     # Unless iconv is explicitely disabled by the user, we still want to probe
3850     # for the iconv from the libc.
3851     disabled iconv || enable libc_iconv
3852
3853     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3854     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3855 fi
3856 # Mark specifically enabled, but normally autodetected libraries as requested.
3857 for lib in $AUTODETECT_LIBS; do
3858     enabled $lib && request $lib
3859 done
3860 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3861 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3862 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3863
3864 disabled logging && logfile=/dev/null
3865
3866 # command line configuration sanity checks
3867
3868 # we need to build at least one lib type
3869 if ! enabled_any static shared; then
3870     cat <<EOF
3871 At least one library type must be built.
3872 Specify --enable-static to build the static libraries or --enable-shared to
3873 build the shared libraries as well. To only build the shared libraries specify
3874 --disable-static in addition to --enable-shared.
3875 EOF
3876     exit 1
3877 fi
3878
3879 die_license_disabled() {
3880     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3881 }
3882
3883 die_license_disabled_gpl() {
3884     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3885 }
3886
3887 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3888 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3889
3890 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3891 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3892
3893 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3894
3895 if enabled nonfree; then
3896     license="nonfree and unredistributable"
3897 elif enabled gplv3; then
3898     license="GPL version 3 or later"
3899 elif enabled lgplv3; then
3900     license="LGPL version 3 or later"
3901 elif enabled gpl; then
3902     license="GPL version 2 or later"
3903 else
3904     license="LGPL version 2.1 or later"
3905 fi
3906
3907 enabled_all gnutls openssl &&
3908     die "GnuTLS and OpenSSL must not be enabled at the same time."
3909
3910 # Disable all the library-specific components if the library itself
3911 # is disabled, see AVCODEC_LIST and following _LIST variables.
3912
3913 disable_components(){
3914     disabled ${1} && disable $(
3915         eval components="\$$(toupper ${1})_COMPONENTS"
3916         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3917     )
3918 }
3919
3920 map 'disable_components $v' $LIBRARY_LIST
3921
3922 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3923 set >> $logfile
3924
3925 test -n "$valgrind" && toolchain="valgrind-memcheck"
3926
3927 enabled ossfuzz && {
3928     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3929     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3930 }
3931
3932 case "$toolchain" in
3933     *-asan)
3934         cc_default="${toolchain%-asan}"
3935         add_cflags  -fsanitize=address
3936         add_ldflags -fsanitize=address
3937     ;;
3938     *-msan)
3939         cc_default="${toolchain%-msan}"
3940         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3941         add_ldflags -fsanitize=memory
3942     ;;
3943     *-tsan)
3944         cc_default="${toolchain%-tsan}"
3945         add_cflags  -fsanitize=thread -fPIE
3946         add_ldflags -fsanitize=thread -pie
3947         case "$toolchain" in
3948             gcc-tsan)
3949                 add_cflags  -fPIC
3950                 add_ldflags -fPIC
3951                 ;;
3952         esac
3953     ;;
3954     *-usan)
3955         cc_default="${toolchain%-usan}"
3956         add_cflags  -fsanitize=undefined
3957         add_ldflags -fsanitize=undefined
3958     ;;
3959     valgrind-*)
3960         target_exec_default="valgrind"
3961         case "$toolchain" in
3962             valgrind-massif)
3963                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3964                 ;;
3965             valgrind-memcheck)
3966                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3967                 ;;
3968         esac
3969     ;;
3970     msvc)
3971         # Check whether the current MSVC version needs the C99 converter.
3972         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3973         # support enough of C99 to build ffmpeg. Default to the new
3974         # behaviour if the regexp was unable to match anything, since this
3975         # successfully parses the version number of existing supported
3976         # versions that require the converter (MSVC 2010 and 2012).
3977         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3978         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3979             cc_default="cl"
3980             cxx_default="cl"
3981         else
3982             cc_default="c99wrap cl"
3983             cxx_default="c99wrap cl"
3984         fi
3985         ld_default="$source_path/compat/windows/mslink"
3986         nm_default="dumpbin -symbols"
3987         ar_default="lib"
3988         case "$arch" in
3989         aarch64|arm64)
3990             as_default="armasm64"
3991             ;;
3992         arm*)
3993             as_default="armasm"
3994             ;;
3995         esac
3996         target_os_default="win32"
3997         # Use a relative path for TMPDIR. This makes sure all the
3998         # ffconf temp files are written with a relative path, avoiding
3999         # issues with msys/win32 path conversion for MSVC parameters
4000         # such as -Fo<file> or -out:<file>.
4001         TMPDIR=.
4002     ;;
4003     icl)
4004         cc_default="icl"
4005         ld_default="xilink"
4006         nm_default="dumpbin -symbols"
4007         ar_default="xilib"
4008         target_os_default="win32"
4009         TMPDIR=.
4010     ;;
4011     gcov)
4012         add_cflags  -fprofile-arcs -ftest-coverage
4013         add_ldflags -fprofile-arcs -ftest-coverage
4014     ;;
4015     llvm-cov)
4016         add_cflags -fprofile-arcs -ftest-coverage
4017         add_ldflags --coverage
4018     ;;
4019     hardened)
4020         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4021         add_cflags   -fno-strict-overflow -fstack-protector-all
4022         add_ldflags  -Wl,-z,relro -Wl,-z,now
4023         add_cflags   -fPIE
4024         add_ldexeflags -fPIE -pie
4025     ;;
4026     ?*)
4027         die "Unknown toolchain $toolchain"
4028     ;;
4029 esac
4030
4031 if test -n "$cross_prefix"; then
4032     test -n "$arch" && test -n "$target_os" ||
4033         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4034     enable cross_compile
4035 fi
4036
4037 ar_default="${cross_prefix}${ar_default}"
4038 cc_default="${cross_prefix}${cc_default}"
4039 cxx_default="${cross_prefix}${cxx_default}"
4040 nm_default="${cross_prefix}${nm_default}"
4041 pkg_config_default="${cross_prefix}${pkg_config_default}"
4042 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4043     ranlib_default="${cross_prefix}${ranlib_default} -D"
4044 else
4045     ranlib_default="${cross_prefix}${ranlib_default}"
4046 fi
4047 strip_default="${cross_prefix}${strip_default}"
4048 windres_default="${cross_prefix}${windres_default}"
4049
4050 sysinclude_default="${sysroot}/usr/include"
4051
4052 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4053     target_exec target_os x86asmexe nvcc
4054 enabled cross_compile || host_cc_default=$cc
4055 set_default host_cc
4056
4057 pkg_config_fail_message=""
4058 if ! $pkg_config --version >/dev/null 2>&1; then
4059     warn "$pkg_config not found, library detection may fail."
4060     pkg_config=false
4061 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4062     pkg_config_fail_message="
4063 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4064 fi
4065
4066 if test $doxygen != $doxygen_default && \
4067   ! $doxygen --version >/dev/null 2>&1; then
4068     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4069 fi
4070
4071 exesuf() {
4072     case $1 in
4073         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4074     esac
4075 }
4076
4077 EXESUF=$(exesuf $target_os)
4078 HOSTEXESUF=$(exesuf $host_os)
4079
4080 # set temporary file name
4081 : ${TMPDIR:=$TEMPDIR}
4082 : ${TMPDIR:=$TMP}
4083 : ${TMPDIR:=/tmp}
4084
4085 if [ -n "$tempprefix" ] ; then
4086     mktemp(){
4087         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4088         echo "$tmpname"
4089         mkdir "$tmpname"
4090     }
4091 elif ! test_cmd mktemp -u XXXXXX; then
4092     # simple replacement for missing mktemp
4093     # NOT SAFE FOR GENERAL USE
4094     mktemp(){
4095         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4096         echo "$tmpname"
4097         mkdir "$tmpname"
4098     }
4099 fi
4100
4101 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4102     die "Unable to create temporary directory in $TMPDIR."
4103
4104 tmpfile(){
4105     tmp="${FFTMPDIR}/test"$2
4106     (set -C; exec > $tmp) 2> /dev/null ||
4107         die "Unable to create temporary file in $FFTMPDIR."
4108     eval $1=$tmp
4109 }
4110
4111 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4112 trap 'exit 2' INT
4113
4114 tmpfile TMPASM .asm
4115 tmpfile TMPC   .c
4116 tmpfile TMPCPP .cpp
4117 tmpfile TMPE   $EXESUF
4118 tmpfile TMPH   .h
4119 tmpfile TMPM   .m
4120 tmpfile TMPO   .o
4121 tmpfile TMPS   .S
4122 tmpfile TMPSH  .sh
4123 tmpfile TMPV   .ver
4124
4125 unset -f mktemp
4126
4127 chmod +x $TMPE
4128
4129 # make sure we can execute files in $TMPDIR
4130 cat > $TMPSH 2>> $logfile <<EOF
4131 #! /bin/sh
4132 EOF
4133 chmod +x $TMPSH >> $logfile 2>&1
4134 if ! $TMPSH >> $logfile 2>&1; then
4135     cat <<EOF
4136 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4137 variable to another directory and make sure that it is not mounted noexec.
4138 EOF
4139     die "Sanity test failed."
4140 fi
4141
4142 armasm_flags(){
4143     for flag; do
4144         case $flag in
4145             # Filter out MSVC cl.exe options from cflags that shouldn't
4146             # be passed to gas-preprocessor
4147             -M[TD]*)                                            ;;
4148             *)                  echo $flag                      ;;
4149         esac
4150    done
4151 }
4152
4153 cparser_flags(){
4154     for flag; do
4155         case $flag in
4156             -Wno-switch)             echo -Wno-switch-enum ;;
4157             -Wno-format-zero-length) ;;
4158             -Wdisabled-optimization) ;;
4159             -Wno-pointer-sign)       echo -Wno-other ;;
4160             *)                       echo $flag ;;
4161         esac
4162     done
4163 }
4164
4165 msvc_common_flags(){
4166     for flag; do
4167         case $flag in
4168             # In addition to specifying certain flags under the compiler
4169             # specific filters, they must be specified here as well or else the
4170             # generic catch all at the bottom will print the original flag.
4171             -Wall)                ;;
4172             -Wextra)              ;;
4173             -std=c99)             ;;
4174             # Common flags
4175             -fomit-frame-pointer) ;;
4176             -g)                   echo -Z7 ;;
4177             -fno-math-errno)      ;;
4178             -fno-common)          ;;
4179             -fno-signed-zeros)    ;;
4180             -fPIC)                ;;
4181             -mthumb)              ;;
4182             -march=*)             ;;
4183             -lz)                  echo zlib.lib ;;
4184             -lx264)               echo libx264.lib ;;
4185             -lstdc++)             ;;
4186             -l*)                  echo ${flag#-l}.lib ;;
4187             -LARGEADDRESSAWARE)   echo $flag ;;
4188             -L*)                  echo -libpath:${flag#-L} ;;
4189             *)                    echo $flag ;;
4190         esac
4191     done
4192 }
4193
4194 msvc_flags(){
4195     msvc_common_flags "$@"
4196     for flag; do
4197         case $flag in
4198             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4199                                        -wd4554 ;;
4200             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4201                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4202                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4203                                        -wd4307 \
4204                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4205         esac
4206     done
4207 }
4208
4209 icl_flags(){
4210     msvc_common_flags "$@"
4211     for flag; do
4212         case $flag in
4213             # Despite what Intel's documentation says -Wall, which is supported
4214             # on Windows, does enable remarks so disable them here.
4215             -Wall)                echo $flag -Qdiag-disable:remark ;;
4216             -std=c99)             echo -Qstd=c99 ;;
4217             -flto)                echo -ipo ;;
4218         esac
4219     done
4220 }
4221
4222 icc_flags(){
4223     for flag; do
4224         case $flag in
4225             -flto)                echo -ipo ;;
4226             *)                    echo $flag ;;
4227         esac
4228     done
4229 }
4230
4231 suncc_flags(){
4232     for flag; do
4233         case $flag in
4234             -march=*|-mcpu=*)
4235                 case "${flag#*=}" in
4236                     native)                   echo -xtarget=native       ;;
4237                     v9|niagara)               echo -xarch=sparc          ;;
4238                     ultrasparc)               echo -xarch=sparcvis       ;;
4239                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4240                     i586|pentium)             echo -xchip=pentium        ;;
4241                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4242                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4243                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4244                     pentium4*)          echo -xtarget=pentium4           ;;
4245                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4246                     *-sse3)             echo -xarch=sse3                 ;;
4247                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4248                     bonnell)                   echo -xarch=ssse3         ;;
4249                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4250                     westmere)                  echo -xtarget=westmere    ;;
4251                     silvermont)                echo -xarch=sse4_2        ;;
4252                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4253                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4254                                                echo -xarch=avx           ;;
4255                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4256                     btver1)                    echo -xarch=amdsse4a      ;;
4257                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4258                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4259                     k8|opteron|athlon64|athlon-fx)
4260                                                echo -xarch=sse2a         ;;
4261                     athlon*)                   echo -xarch=pentium_proa  ;;
4262                 esac
4263                 ;;
4264             -std=c99)             echo -xc99              ;;
4265             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4266             -fPIC)                echo -KPIC -xcode=pic32 ;;
4267             -W*,*)                echo $flag              ;;
4268             -f*-*|-W*|-mimpure-text)                      ;;
4269             -shared)              echo -G                 ;;
4270             *)                    echo $flag              ;;
4271         esac
4272     done
4273 }
4274
4275 probe_cc(){
4276     pfx=$1
4277     _cc=$2
4278     first=$3
4279
4280     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4281     unset _ld_o _ldflags _ld_lib _ld_path
4282     unset _depflags _DEPCMD _DEPFLAGS
4283     _flags_filter=echo
4284
4285     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4286         true # no-op to avoid reading stdin in following checks
4287     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4288         _type=llvm_gcc
4289         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4290         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4291         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4292         _cflags_speed='-O3'
4293         _cflags_size='-Os'
4294     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4295         _type=gcc
4296         gcc_version=$($_cc --version | head -n1)
4297         gcc_basever=$($_cc -dumpversion)
4298         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4299         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4300         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4301         case $gcc_basever in
4302             2) ;;
4303             2.*) ;;
4304             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4305         esac
4306         if [ "$first" = true ]; then
4307             case $gcc_basever in
4308                 4.2*)
4309                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4310             esac
4311         fi
4312         _cflags_speed='-O3'
4313         _cflags_size='-Os'
4314     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4315         _type=icc
4316         _ident=$($_cc --version | head -n1)
4317         _depflags='-MMD'
4318         _cflags_speed='-O3'
4319         _cflags_size='-Os'
4320         _cflags_noopt='-O1'
4321         _flags_filter=icc_flags
4322     elif $_cc -v 2>&1 | grep -q xlc; then
4323         _type=xlc
4324         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4325         _cflags_speed='-O5'
4326         _cflags_size='-O5 -qcompact'
4327     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4328         test -d "$sysroot" || die "No valid sysroot specified."
4329         _type=armcc
4330         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4331         armcc_conf="$PWD/armcc.conf"
4332         $_cc --arm_linux_configure                 \
4333              --arm_linux_config_file="$armcc_conf" \
4334              --configure_sysroot="$sysroot"        \
4335              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4336              die "Error creating armcc configuration file."
4337         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4338         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4339         as_default="${cross_prefix}gcc"
4340         _depflags='-MMD'
4341         _cflags_speed='-O3'
4342         _cflags_size='-Os'
4343     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4344         _type=clang
4345         _ident=$($_cc --version 2>/dev/null | head -n1)
4346         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4347         _cflags_speed='-O3'
4348         _cflags_size='-Oz'
4349     elif $_cc -V 2>&1 | grep -q Sun; then
4350         _type=suncc
4351         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4352         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4353         _DEPFLAGS='-xM1 -xc99'
4354         _ldflags='-std=c99'
4355         _cflags_speed='-O5'
4356         _cflags_size='-O5 -xspace'
4357         _flags_filter=suncc_flags
4358     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4359         _type=pathscale
4360         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4361         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4362         _cflags_speed='-O2'
4363         _cflags_size='-Os'
4364         _flags_filter='filter_out -Wdisabled-optimization'
4365     elif $_cc -v 2>&1 | grep -q Open64; then
4366         _type=open64
4367         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4368         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4369         _cflags_speed='-O2'
4370         _cflags_size='-Os'
4371         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4372     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4373         _type=armasm
4374         _ident=$($_cc | head -n1)
4375         # 4509: "This form of conditional instruction is deprecated"
4376         _flags="-nologo -ignore 4509"
4377         _flags_filter=armasm_flags
4378     elif $_cc 2>&1 | grep -q Intel; then
4379         _type=icl
4380         _ident=$($_cc 2>&1 | head -n1)
4381         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4382         # Not only is O3 broken on 13.x+ but it is slower on all previous
4383         # versions (tested) as well.
4384         _cflags_speed="-O2"
4385         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4386         if $_cc 2>&1 | grep -q Linker; then
4387             _ld_o='-out:$@'
4388         else
4389             _ld_o='-Fe$@'
4390         fi
4391         _cc_o='-Fo$@'
4392         _cc_e='-P'
4393         _flags_filter=icl_flags
4394         _ld_lib='lib%.a'
4395         _ld_path='-libpath:'
4396         # -Qdiag-error to make icl error when seeing certain unknown arguments
4397         _flags='-nologo -Qdiag-error:4044,10157'
4398         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4399         # with MSVC which enables it by default.
4400         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4401         disable stripping
4402     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4403         # lld can emulate multiple different linkers; in ms link.exe mode,
4404         # the -? parameter gives the help output which contains an identifyable
4405         # string, while it gives an error in other modes.
4406         _type=lld-link
4407         # The link.exe mode doesn't have a switch for getting the version,
4408         # but we can force it back to gnu mode and get the version from there.
4409         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4410         _ld_o='-out:$@'
4411         _flags_filter=msvc_flags
4412         _ld_lib='lib%.a'
4413         _ld_path='-libpath:'
4414     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4415         _type=msvc
4416         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4417         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4418         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4419         _cflags_speed="-O2"
4420         _cflags_size="-O1"
4421         _cflags_noopt="-O1"
4422         if $_cc -nologo- 2>&1 | grep -q Linker; then
4423             _ld_o='-out:$@'
4424         else
4425             _ld_o='-Fe$@'
4426         fi
4427         _cc_o='-Fo$@'
4428         _cc_e='-P -Fi$@'
4429         _flags_filter=msvc_flags
4430         _ld_lib='lib%.a'
4431         _ld_path='-libpath:'
4432         _flags='-nologo'
4433         disable stripping
4434     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4435         _type=cparser
4436         _ident=$($_cc --version | head -n1)
4437         _depflags='-MMD'
4438         _cflags_speed='-O4'
4439         _cflags_size='-O2'
4440         _flags_filter=cparser_flags
4441     fi
4442
4443     eval ${pfx}_type=\$_type
4444     eval ${pfx}_ident=\$_ident
4445 }
4446
4447 set_ccvars(){
4448     eval ${1}_C=\${_cc_c-\${${1}_C}}
4449     eval ${1}_E=\${_cc_e-\${${1}_E}}
4450     eval ${1}_O=\${_cc_o-\${${1}_O}}
4451
4452     if [ -n "$_depflags" ]; then
4453         eval ${1}_DEPFLAGS=\$_depflags
4454     else
4455         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4456         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4457         eval DEP${1}FLAGS=\$_flags
4458     fi
4459 }
4460
4461 probe_cc cc "$cc" "true"
4462 cflags_filter=$_flags_filter
4463 cflags_speed=$_cflags_speed
4464 cflags_size=$_cflags_size
4465 cflags_noopt=$_cflags_noopt
4466 add_cflags $_flags $_cflags
4467 cc_ldflags=$_ldflags
4468 set_ccvars CC
4469 set_ccvars CXX
4470
4471 probe_cc hostcc "$host_cc"
4472 host_cflags_filter=$_flags_filter
4473 host_cflags_speed=$_cflags_speed
4474 add_host_cflags  $_flags $_cflags
4475 set_ccvars HOSTCC
4476
4477 test -n "$cc_type" && enable $cc_type ||
4478     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4479
4480 : ${as_default:=$cc}
4481 : ${objcc_default:=$cc}
4482 : ${dep_cc_default:=$cc}
4483 : ${ld_default:=$cc}
4484 : ${host_ld_default:=$host_cc}
4485 set_default ar as objcc dep_cc ld ln_s host_ld windres
4486
4487 probe_cc as "$as"
4488 asflags_filter=$_flags_filter
4489 add_asflags $_flags $_cflags
4490 set_ccvars AS
4491
4492 probe_cc objcc "$objcc"
4493 objcflags_filter=$_flags_filter
4494 add_objcflags $_flags $_cflags
4495 set_ccvars OBJC
4496
4497 probe_cc ld "$ld"
4498 ldflags_filter=$_flags_filter
4499 add_ldflags $_flags $_ldflags
4500 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4501 LD_O=${_ld_o-$LD_O}
4502 LD_LIB=${_ld_lib-$LD_LIB}
4503 LD_PATH=${_ld_path-$LD_PATH}
4504
4505 probe_cc hostld "$host_ld"
4506 host_ldflags_filter=$_flags_filter
4507 add_host_ldflags $_flags $_ldflags
4508 HOSTLD_O=${_ld_o-$HOSTLD_O}
4509
4510 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4511     probe_cc depcc "$dep_cc"
4512     CCDEP=${_DEPCMD:-$DEPCMD}
4513     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4514     DEPCCFLAGS=$_flags
4515 fi
4516
4517 if $ar 2>&1 | grep -q Microsoft; then
4518     arflags="-nologo"
4519     ar_o='-out:$@'
4520 elif $ar 2>&1 | grep -q "\[D\] "; then
4521     arflags="rcD"
4522     ar_o='$@'
4523 else
4524     arflags="rc"
4525     ar_o='$@'
4526 fi
4527
4528 add_cflags $extra_cflags
4529 add_cxxflags $extra_cxxflags
4530 add_objcflags $extra_objcflags
4531 add_asflags $extra_cflags
4532
4533 if test -n "$sysroot"; then
4534     case "$cc_type" in
4535         gcc|llvm_gcc|clang)
4536             add_cppflags --sysroot="$sysroot"
4537             add_ldflags --sysroot="$sysroot"
4538         ;;
4539     esac
4540 fi
4541
4542 if test "$cpu" = host; then
4543     enabled cross_compile &&
4544         die "--cpu=host makes no sense when cross-compiling."
4545
4546     case "$cc_type" in
4547         gcc|llvm_gcc)
4548             check_native(){
4549                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4550                 sed -n "/cc1.*$1=/{
4551                             s/.*$1=\\([^ ]*\\).*/\\1/
4552                             p
4553                             q
4554                         }" $TMPE
4555             }
4556             cpu=$(check_native -march || check_native -mcpu)
4557         ;;
4558         clang)
4559             check_native(){
4560                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4561                 sed -n "/cc1.*-target-cpu /{
4562                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4563                             p
4564                             q
4565                         }" $TMPE
4566             }
4567             cpu=$(check_native -march)
4568         ;;
4569     esac
4570
4571     test "${cpu:-host}" = host &&
4572         die "--cpu=host not supported with compiler $cc"
4573 fi
4574
4575 # Deal with common $arch aliases
4576 case "$arch" in
4577     aarch64|arm64)
4578         arch="aarch64"
4579     ;;
4580     arm*|iPad*|iPhone*)
4581         arch="arm"
4582     ;;
4583     mips*|IP*)
4584         case "$arch" in
4585         *el)
4586             add_cppflags -EL
4587             add_ldflags -EL
4588         ;;
4589         *eb)
4590             add_cppflags -EB
4591             add_ldflags -EB
4592         ;;
4593         esac
4594         arch="mips"
4595     ;;
4596     parisc*|hppa*)
4597         arch="parisc"
4598     ;;
4599     "Power Macintosh"|ppc*|powerpc*)
4600         arch="ppc"
4601     ;;
4602     s390|s390x)
4603         arch="s390"
4604     ;;
4605     sh4|sh)
4606         arch="sh4"
4607     ;;
4608     sun4*|sparc*)
4609         arch="sparc"
4610     ;;
4611     tilegx|tile-gx)
4612         arch="tilegx"
4613     ;;
4614     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4615         arch="x86"
4616     ;;
4617 esac
4618
4619 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4620 enable $arch
4621
4622 # Add processor-specific flags
4623 if enabled aarch64; then
4624
4625     case $cpu in
4626         armv*)
4627             cpuflags="-march=$cpu"
4628         ;;
4629         *)
4630             cpuflags="-mcpu=$cpu"
4631         ;;
4632     esac
4633
4634 elif enabled alpha; then
4635
4636     cpuflags="-mcpu=$cpu"
4637
4638 elif enabled arm; then
4639
4640     check_arm_arch() {
4641         test_cpp_condition stddef.h \
4642             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4643             $cpuflags
4644     }
4645
4646     probe_arm_arch() {
4647         if   check_arm_arch 4;        then echo armv4
4648         elif check_arm_arch 4T;       then echo armv4t
4649         elif check_arm_arch 5;        then echo armv5
4650         elif check_arm_arch 5E;       then echo armv5e
4651         elif check_arm_arch 5T;       then echo armv5t
4652         elif check_arm_arch 5TE;      then echo armv5te
4653         elif check_arm_arch 5TEJ;     then echo armv5te
4654         elif check_arm_arch 6;        then echo armv6
4655         elif check_arm_arch 6J;       then echo armv6j
4656         elif check_arm_arch 6K;       then echo armv6k
4657         elif check_arm_arch 6Z;       then echo armv6z
4658         elif check_arm_arch 6KZ;      then echo armv6zk
4659         elif check_arm_arch 6ZK;      then echo armv6zk
4660         elif check_arm_arch 6T2;      then echo armv6t2
4661         elif check_arm_arch 7;        then echo armv7
4662         elif check_arm_arch 7A  7_A;  then echo armv7-a
4663         elif check_arm_arch 7S;       then echo armv7-a
4664         elif check_arm_arch 7R  7_R;  then echo armv7-r
4665         elif check_arm_arch 7M  7_M;  then echo armv7-m
4666         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4667         elif check_arm_arch 8A  8_A;  then echo armv8-a
4668         fi
4669     }
4670
4671     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4672
4673     case $cpu in
4674         armv*)
4675             cpuflags="-march=$cpu"
4676             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4677         ;;
4678         *)
4679             cpuflags="-mcpu=$cpu"
4680             case $cpu in
4681                 cortex-a*)                               subarch=armv7a  ;;
4682                 cortex-r*)                               subarch=armv7r  ;;
4683                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4684                 arm11*)                                  subarch=armv6   ;;
4685                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4686                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4687                 *)                             subarch=$(probe_arm_arch) ;;
4688             esac
4689         ;;
4690     esac
4691
4692     case "$subarch" in
4693         armv5t*)    enable fast_clz                ;;
4694         armv[6-8]*)
4695             enable fast_clz
4696             disabled fast_unaligned || enable fast_unaligned
4697             ;;
4698     esac
4699
4700 elif enabled avr32; then
4701
4702     case $cpu in
4703         ap7[02]0[0-2])
4704             subarch="avr32_ap"
4705             cpuflags="-mpart=$cpu"
4706         ;;
4707         ap)
4708             subarch="avr32_ap"
4709             cpuflags="-march=$cpu"
4710         ;;
4711         uc3[ab]*)
4712             subarch="avr32_uc"
4713             cpuflags="-mcpu=$cpu"
4714         ;;
4715         uc)
4716             subarch="avr32_uc"
4717             cpuflags="-march=$cpu"
4718         ;;
4719     esac
4720
4721 elif enabled bfin; then
4722
4723     cpuflags="-mcpu=$cpu"
4724
4725 elif enabled mips; then
4726
4727     cpuflags="-march=$cpu"
4728
4729     if [ "$cpu" != "generic" ]; then
4730         disable mips32r2
4731         disable mips32r5
4732         disable mips64r2
4733         disable mips32r6
4734         disable mips64r6
4735         disable loongson2
4736         disable loongson3
4737
4738         case $cpu in
4739             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4740                 enable mips32r2
4741                 disable msa
4742             ;;
4743             p5600|i6400|p6600)
4744                 disable mipsdsp
4745                 disable mipsdspr2
4746             ;;
4747             loongson*)
4748                 enable loongson2
4749                 enable loongson3
4750                 enable local_aligned
4751                 enable simd_align_16
4752                 enable fast_64bit
4753                 enable fast_clz
4754                 enable fast_cmov
4755                 enable fast_unaligned
4756                 disable aligned_stack
4757                 disable mipsfpu
4758                 disable mipsdsp
4759                 disable mipsdspr2
4760                 case $cpu in
4761                     loongson3*)
4762                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4763                     ;;
4764                     loongson2e)
4765                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4766                     ;;
4767                     loongson2f)
4768                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4769                     ;;
4770                 esac
4771             ;;
4772             *)
4773                 # Unknown CPU. Disable everything.
4774                 warn "unknown CPU. Disabling all MIPS optimizations."
4775                 disable mipsfpu
4776                 disable mipsdsp
4777                 disable mipsdspr2
4778                 disable msa
4779                 disable mmi
4780             ;;
4781         esac
4782
4783         case $cpu in
4784             24kc)
4785                 disable mipsfpu
4786                 disable mipsdsp
4787                 disable mipsdspr2
4788             ;;
4789             24kf*)
4790                 disable mipsdsp
4791                 disable mipsdspr2
4792             ;;
4793             24kec|34kc|1004kc)
4794                 disable mipsfpu
4795                 disable mipsdspr2
4796             ;;
4797             24kef*|34kf*|1004kf*)
4798                 disable mipsdspr2
4799             ;;
4800             74kc)
4801                 disable mipsfpu
4802             ;;
4803             p5600)
4804                 enable mips32r5
4805                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4806             ;;
4807             i6400)
4808                 enable mips64r6
4809                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4810             ;;
4811             p6600)
4812                 enable mips64r6
4813                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4814             ;;
4815         esac
4816     else
4817         # We do not disable anything. Is up to the user to disable the unwanted features.
4818         warn 'generic cpu selected'
4819     fi
4820
4821 elif enabled ppc; then
4822
4823     disable ldbrx
4824
4825     case $(tolower $cpu) in
4826         601|ppc601|powerpc601)
4827             cpuflags="-mcpu=601"
4828             disable altivec
4829         ;;
4830         603*|ppc603*|powerpc603*)
4831             cpuflags="-mcpu=603"
4832             disable altivec
4833         ;;
4834         604*|ppc604*|powerpc604*)
4835             cpuflags="-mcpu=604"
4836             disable altivec
4837         ;;
4838         g3|75*|ppc75*|powerpc75*)
4839             cpuflags="-mcpu=750"
4840             disable altivec
4841         ;;
4842         g4|745*|ppc745*|powerpc745*)
4843             cpuflags="-mcpu=7450"
4844             disable vsx
4845         ;;
4846         74*|ppc74*|powerpc74*)
4847             cpuflags="-mcpu=7400"
4848             disable vsx
4849         ;;
4850         g5|970|ppc970|powerpc970)
4851             cpuflags="-mcpu=970"
4852             disable vsx
4853         ;;
4854         power[3-6]*)
4855             cpuflags="-mcpu=$cpu"
4856             disable vsx
4857         ;;
4858         power[7-8]*)
4859             cpuflags="-mcpu=$cpu"
4860         ;;
4861         cell)
4862             cpuflags="-mcpu=cell"
4863             enable ldbrx
4864             disable vsx
4865         ;;
4866         e500mc)
4867             cpuflags="-mcpu=e500mc"
4868             disable altivec
4869         ;;
4870         e500v2)
4871             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4872             disable altivec
4873             disable dcbzl
4874         ;;
4875         e500)
4876             cpuflags="-mcpu=8540 -mhard-float"
4877             disable altivec
4878             disable dcbzl
4879         ;;
4880     esac
4881
4882 elif enabled sparc; then
4883
4884     case $cpu in
4885         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4886             cpuflags="-mcpu=$cpu"
4887         ;;
4888         ultrasparc*|niagara[234])
4889             cpuflags="-mcpu=$cpu"
4890         ;;
4891     esac
4892
4893 elif enabled x86; then
4894
4895     case $cpu in
4896         i[345]86|pentium)
4897             cpuflags="-march=$cpu"
4898             disable i686
4899             disable mmx
4900         ;;
4901         # targets that do NOT support nopl and conditional mov (cmov)
4902         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4903             cpuflags="-march=$cpu"
4904             disable i686
4905         ;;
4906         # targets that do support nopl and conditional mov (cmov)
4907         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4908         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4909         |amdfam10|barcelona|b[dt]ver*|znver*)
4910             cpuflags="-march=$cpu"
4911             enable i686
4912             enable fast_cmov
4913         ;;
4914         # targets that do support conditional mov but on which it's slow
4915         pentium4|pentium4m|prescott|nocona)
4916             cpuflags="-march=$cpu"
4917             enable i686
4918             disable fast_cmov
4919         ;;
4920     esac
4921
4922 fi
4923
4924 if [ "$cpu" != generic ]; then
4925     add_cflags  $cpuflags
4926     add_asflags $cpuflags
4927     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4928 fi
4929
4930 # compiler sanity check
4931 test_exec <<EOF
4932 int main(void){ return 0; }
4933 EOF
4934 if test "$?" != 0; then
4935     echo "$cc is unable to create an executable file."
4936     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4937         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4938         echo "Only do this if you know what cross compiling means."
4939     fi
4940     die "C compiler test failed."
4941 fi
4942
4943 add_cppflags -D_ISOC99_SOURCE
4944 add_cxxflags -D__STDC_CONSTANT_MACROS
4945 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4946
4947 # some compilers silently accept -std=c11, so we also need to check that the
4948 # version macro is defined properly
4949 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4950     add_cflags -std=c11 ||
4951     check_cflags -std=c99
4952
4953 check_cppflags -D_FILE_OFFSET_BITS=64
4954 check_cppflags -D_LARGEFILE_SOURCE
4955
4956 add_host_cppflags -D_ISOC99_SOURCE
4957 check_host_cflags -std=c99
4958 check_host_cflags -Wall
4959 check_host_cflags $host_cflags_speed
4960
4961 check_64bit(){
4962     arch32=$1
4963     arch64=$2
4964     expr=${3:-'sizeof(void *) > 4'}
4965     test_code cc "" "int test[2*($expr) - 1]" &&
4966         subarch=$arch64 || subarch=$arch32
4967     enable $subarch
4968 }
4969
4970 case "$arch" in
4971     aarch64|alpha|ia64)
4972         enabled shared && enable_weak pic
4973     ;;
4974     mips)
4975         check_64bit mips mips64 '_MIPS_SIM > 1'
4976         enabled shared && enable_weak pic
4977     ;;
4978     parisc)
4979         check_64bit parisc parisc64
4980         enabled shared && enable_weak pic
4981     ;;
4982     ppc)
4983         check_64bit ppc ppc64
4984         enabled shared && enable_weak pic
4985     ;;
4986     s390)
4987         check_64bit s390 s390x
4988         enabled shared && enable_weak pic
4989     ;;
4990     sparc)
4991         check_64bit sparc sparc64
4992         enabled shared && enable_weak pic
4993     ;;
4994     x86)
4995         check_64bit x86_32 x86_64
4996         # Treat x32 as x64 for now. Note it also needs pic if shared
4997         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
4998             subarch=x86_64 && enable x86_64 && disable x86_32
4999         if enabled x86_64; then
5000             enabled shared && enable_weak pic
5001             objformat=elf64
5002         fi
5003     ;;
5004 esac
5005
5006 # OS specific
5007 case $target_os in
5008     aix)
5009         SHFLAGS=-shared
5010         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5011         enabled shared && add_ldflags -Wl,-brtl
5012         arflags='-Xany -r -c'
5013         striptype=""
5014         ;;
5015     android)
5016         disable symver
5017         enable section_data_rel_ro
5018         SLIB_INSTALL_NAME='$(SLIBNAME)'
5019         SLIB_INSTALL_LINKS=
5020         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5021         ;;
5022     haiku)
5023         prefix_default="/boot/common"
5024         network_extralibs="-lnetwork"
5025         host_extralibs=
5026         ;;
5027     sunos)
5028         SHFLAGS='-shared -Wl,-h,$$(@F)'
5029         enabled x86 && append SHFLAGS -mimpure-text
5030         network_extralibs="-lsocket -lnsl"
5031         add_cppflags -D__EXTENSIONS__
5032         # When using suncc to build, the Solaris linker will mark
5033         # an executable with each instruction set encountered by
5034         # the Solaris assembler.  As our libraries contain their own
5035         # guards for processor-specific code, instead suppress
5036         # generation of the HWCAPS ELF section on Solaris x86 only.
5037         enabled_all suncc x86 &&
5038             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5039             add_ldflags -Wl,-M,mapfile
5040         nm_default='nm -P -g'
5041         version_script='-M'
5042         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5043         ;;
5044     netbsd)
5045         disable symver
5046         oss_indev_extralibs="-lossaudio"
5047         oss_outdev_extralibs="-lossaudio"
5048         enabled gcc || check_ldflags -Wl,-zmuldefs
5049         ;;
5050     openbsd|bitrig)
5051         disable symver
5052         striptype=""
5053         SHFLAGS='-shared'
5054         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5055         SLIB_INSTALL_LINKS=
5056         oss_indev_extralibs="-lossaudio"
5057         oss_outdev_extralibs="-lossaudio"
5058         ;;
5059     dragonfly)
5060         disable symver
5061         ;;
5062     freebsd)
5063         ;;
5064     bsd/os)
5065         add_extralibs -lpoll -lgnugetopt
5066         strip="strip -d"
5067         ;;
5068     darwin)
5069         enabled ppc && add_asflags -force_cpusubtype_ALL
5070         install_name_dir_default='$(SHLIBDIR)'
5071         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5072         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5073         strip="${strip} -x"
5074         add_ldflags -Wl,-dynamic,-search_paths_first
5075         check_cflags -Werror=partial-availability
5076         SLIBSUF=".dylib"
5077         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5078         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5079         enabled x86_64 && objformat="macho64" || objformat="macho32"
5080         enabled_any pic shared x86_64 ||
5081             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5082         check_header dispatch/dispatch.h &&
5083             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5084         if test -n "$sysroot"; then
5085             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5086             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5087         fi
5088         version_script='-exported_symbols_list'
5089         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5090         ;;
5091     msys*)
5092         die "Native MSYS builds are discouraged, please use the MINGW environment."
5093         ;;
5094     mingw32*|mingw64*)
5095         target_os=mingw32
5096         LIBTARGET=i386
5097         if enabled x86_64; then
5098             LIBTARGET="i386:x86-64"
5099         elif enabled arm; then
5100             LIBTARGET="arm"
5101         elif enabled aarch64; then
5102             LIBTARGET="arm64"
5103         fi
5104         if enabled shared; then
5105             # Cannot build both shared and static libs when using dllimport.
5106             disable static
5107         fi
5108         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5109         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5110         shlibdir_default="$bindir_default"
5111         SLIBPREF=""
5112         SLIBSUF=".dll"
5113         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5114         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5115         if test_cmd lib.exe -list; then
5116             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5117             if enabled x86_64; then
5118                 LIBTARGET=x64
5119             fi
5120         else
5121             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5122         fi
5123         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5124         SLIB_INSTALL_LINKS=
5125         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5126         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5127         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5128         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5129         enabled x86_64 && objformat="win64" || objformat="win32"
5130         dlltool="${cross_prefix}dlltool"
5131         ranlib=:
5132         enable dos_paths
5133         check_ldflags -Wl,--nxcompat,--dynamicbase
5134         # Lets work around some stupidity in binutils.
5135         # ld will strip relocations from executables even though we need them
5136         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5137         # however ld then forgets what the entry point should be (oops) so we
5138         # have to manually (re)set it.
5139         if enabled x86_32; then
5140             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5141         elif enabled x86_64; then
5142             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5143             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5144             # Set image base >4GB for extra entropy with HEASLR
5145             add_ldexeflags -Wl,--image-base,0x140000000
5146             append SHFLAGS -Wl,--image-base,0x180000000
5147         fi
5148         ;;
5149     win32|win64)
5150         disable symver
5151         if enabled shared; then
5152             # Link to the import library instead of the normal static library
5153             # for shared libs.
5154             LD_LIB='%.lib'
5155             # Cannot build both shared and static libs with MSVC or icl.
5156             disable static
5157         fi
5158         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5159         shlibdir_default="$bindir_default"
5160         SLIBPREF=""
5161         SLIBSUF=".dll"
5162         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5163         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5164         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5165         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5166         SLIB_INSTALL_LINKS=
5167         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5168         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5169         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5170         enabled x86_64 && objformat="win64" || objformat="win32"
5171         ranlib=:
5172         enable dos_paths
5173         ;;
5174     cygwin*)
5175         target_os=cygwin
5176         shlibdir_default="$bindir_default"
5177         SLIBPREF="cyg"
5178         SLIBSUF=".dll"
5179         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5180         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5181         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5182         SLIB_INSTALL_LINKS=
5183         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5184         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5185         enabled x86_64 && objformat="win64" || objformat="win32"
5186         enable dos_paths
5187         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5188         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5189         ;;
5190     *-dos|freedos|opendos)
5191         network_extralibs="-lsocket"
5192         objformat="coff"
5193         enable dos_paths
5194         add_cppflags -U__STRICT_ANSI__
5195         ;;
5196     linux)
5197         enable section_data_rel_ro
5198         enabled_any arm aarch64 && enable_weak linux_perf
5199         ;;
5200     irix*)
5201         target_os=irix
5202         ranlib="echo ignoring ranlib"
5203         ;;
5204     os/2*)
5205         strip="lxlite -CS"
5206         striptype=""
5207         objformat="aout"
5208         add_cppflags -D_GNU_SOURCE
5209         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5210         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5211         LIBSUF="_s.a"
5212         SLIBPREF=""
5213         SLIBSUF=".dll"
5214         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5215         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5216         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5217             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5218             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5219             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5220             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5221         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5222             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5223         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5224         SLIB_INSTALL_LINKS=
5225         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5226         enable dos_paths
5227         enable_weak os2threads
5228         ;;
5229     gnu/kfreebsd)
5230         add_cppflags -D_BSD_SOURCE
5231         ;;
5232     gnu)
5233         ;;
5234     qnx)
5235         add_cppflags -D_QNX_SOURCE
5236         network_extralibs="-lsocket"
5237         ;;
5238     symbian)
5239         SLIBSUF=".dll"
5240         enable dos_paths
5241         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5242         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5243         add_ldflags -Wl,--target1-abs,--no-undefined \
5244                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5245                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5246         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5247                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5248                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5249         ;;
5250     minix)
5251         ;;
5252     none)
5253         ;;
5254     *)
5255         die "Unknown OS '$target_os'."
5256         ;;
5257 esac
5258
5259 # test if creating links works
5260 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5261 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5262 mkdir "$link_dest"
5263 $ln_s "$link_dest" "$link_name"
5264 touch "$link_dest/test_file"
5265 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5266     # create link to source path
5267     [ -e src ] && rm src
5268     $ln_s "$source_path" src
5269     source_link=src
5270 else
5271     # creating directory links doesn't work
5272     # fall back to using the full source path
5273     source_link="$source_path"
5274 fi
5275 # cleanup
5276 rm -r "$link_dest"
5277 rm -r "$link_name"
5278
5279 # determine libc flavour
5280
5281 probe_libc(){
5282     pfx=$1
5283     pfx_no_=${pfx%_}
5284     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5285     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5286         eval ${pfx}libc_type=uclibc
5287         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5288     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5289         eval ${pfx}libc_type=glibc
5290         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5291     # MinGW headers can be installed on Cygwin, so check for newlib first.
5292     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5293         eval ${pfx}libc_type=newlib
5294         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5295     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5296     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5297         eval ${pfx}libc_type=mingw64
5298         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5299             add_compat msvcrt/snprintf.o
5300             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5301         fi
5302         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5303         eval test \$${pfx_no_}cc_type = "gcc" &&
5304             add_${pfx}cppflags -D__printf__=__gnu_printf__
5305         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5306             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5307     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5308          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5309         eval ${pfx}libc_type=mingw32
5310         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5311             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5312             die "ERROR: MinGW32 runtime version must be >= 3.15."
5313         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5314         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5315             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5316         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5317             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5318         eval test \$${pfx_no_}cc_type = "gcc" &&
5319             add_${pfx}cppflags -D__printf__=__gnu_printf__
5320     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5321         eval ${pfx}libc_type=msvcrt
5322         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5323             if [ "$pfx" = host_ ]; then
5324                 add_host_cppflags -Dsnprintf=_snprintf
5325             else
5326                 add_compat strtod.o strtod=avpriv_strtod
5327                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5328                                              _snprintf=avpriv_snprintf  \
5329                                              vsnprintf=avpriv_vsnprintf
5330             fi
5331         fi
5332         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5333         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5334         # 0x601 by default unless something else is set by the user.
5335         # This can easily lead to us detecting functions only present
5336         # in such new versions and producing binaries requiring windows 7.0.
5337         # Therefore explicitly set the default to Vista unless the user has
5338         # set something else on the command line.
5339         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5340         # family. For these cases, configure is free to use any functions
5341         # found in the SDK headers by default. (Alternatively, we could force
5342         # _WIN32_WINNT to 0x0602 in that case.)
5343         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5344             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5345 #ifdef WINAPI_FAMILY
5346 #include <winapifamily.h>
5347 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5348 #error not desktop
5349 #endif
5350 #endif
5351 EOF
5352         if [ "$pfx" = "" ]; then
5353             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5354             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5355         fi
5356     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5357         eval ${pfx}libc_type=klibc
5358     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5359         eval ${pfx}libc_type=bionic
5360     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5361         eval ${pfx}libc_type=solaris
5362         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5363     fi
5364     test_${pfx}cc <<EOF
5365 #include <time.h>
5366 void *v = localtime_r;
5367 EOF
5368 test "$?" != 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
5369 #include <time.h>
5370 void *v = localtime_r;
5371 EOF
5372
5373     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5374 }
5375
5376 probe_libc
5377 probe_libc host_
5378
5379 # hacks for compiler/libc/os combinations
5380
5381 case $libc_type in
5382     bionic)
5383         add_compat strtod.o strtod=avpriv_strtod
5384         ;;
5385 esac
5386
5387 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5388     add_cppflags '-I\$(SRC_PATH)/compat/float'
5389
5390 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5391
5392 set_default libdir
5393 : ${shlibdir_default:="$libdir"}
5394 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5395
5396 set_default $PATHS_LIST
5397 set_default nm
5398
5399 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5400
5401 enable_weak_pic() {
5402     disabled pic && return
5403     enable pic
5404     add_cppflags -DPIC
5405     case "$target_os" in
5406     mingw*|cygwin*|win*)
5407         ;;
5408     *)
5409         add_cflags -fPIC
5410         add_asflags -fPIC
5411         ;;
5412     esac
5413 }
5414
5415 enabled pic && enable_weak_pic
5416
5417 test_cc <<EOF || die "Symbol mangling check failed."
5418 int ff_extern;
5419 EOF
5420 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5421 extern_prefix=${sym%%ff_extern*}
5422
5423 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5424
5425 for restrict_keyword in restrict __restrict__ __restrict ""; do
5426     test_code cc "" "char * $restrict_keyword p" && break
5427 done
5428
5429 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5430
5431 # The global variable ensures the bits appear unchanged in the object file.
5432 test_cc <<EOF || die "endian test failed"
5433 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5434 EOF
5435 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5436
5437 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5438
5439 if ! enabled ppc64 || enabled bigendian; then
5440     disable vsx
5441 fi
5442
5443 check_gas() {
5444     log "check_gas using '$as' as AS"
5445     # :vararg is used on aarch64, arm and ppc altivec
5446     check_as vararg "
5447 .macro m n, y:vararg=0
5448 \n: .int \y
5449 .endm
5450 m x" || return 1
5451     # .altmacro is only used in arm asm
5452     ! enabled arm || check_as gnu_as ".altmacro"
5453 }
5454
5455 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5456     nogas=:
5457     enabled_any arm aarch64 && nogas=die
5458     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5459     as_noop=-v
5460
5461     case $as_type in
5462         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5463         gcc)  gaspp_as_type=gas ;;
5464         *)    gaspp_as_type=$as_type ;;
5465     esac
5466
5467     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5468
5469     test "${as#*gas-preprocessor.pl}" != "$as" ||
5470     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5471         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5472
5473     if ! check_gas ; then
5474         as=${gas:=$as}
5475         check_gas || \
5476             $nogas "GNU assembler not found, install/update gas-preprocessor"
5477     fi
5478
5479     check_as as_func ".func test
5480                       .endfunc"
5481 fi
5482
5483 check_inline_asm inline_asm_labels '"1:\n"'
5484
5485 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5486
5487 if enabled aarch64; then
5488     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5489     # internal assembler in clang 3.3 does not support this instruction
5490     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5491     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5492
5493     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5494
5495 elif enabled alpha; then
5496
5497     check_cflags -mieee
5498
5499 elif enabled arm; then
5500
5501     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5502     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5503 float func(float a, float b){ return a+b; }
5504 EOF
5505     enabled thumb && check_cflags -mthumb || check_cflags -marm
5506
5507     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5508         :
5509     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5510         :
5511     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5512         case "${cross_prefix:-$cc}" in
5513             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5514             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5515 __asm__ (".eabi_attribute 28, 1");
5516 int main(void) { return 0; }
5517 EOF
5518         esac
5519         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5520     fi
5521
5522     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5523     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5524     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5525     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5526     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5527     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5528     enabled setend  && check_insn setend  'setend be'
5529
5530     [ $target_os = linux ] || [ $target_os = android ] ||
5531         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5532             $ARCH_EXT_LIST_ARM
5533
5534     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5535
5536     check_as as_arch_directive ".arch armv7-a"
5537     check_as as_dn_directive   "ra .dn d0.i16"
5538     check_as as_fpu_directive  ".fpu neon"
5539
5540     # llvm's integrated assembler supports .object_arch from llvm 3.5
5541     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5542         check_as as_object_arch ".object_arch armv4"
5543
5544     # MS armasm fails to assemble our PIC constructs
5545     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5546
5547 elif enabled mips; then
5548
5549     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5550     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5551     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5552
5553     # Enable minimum ISA based on selected options
5554     if enabled mips64; then
5555         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5556         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5557         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5558     else
5559         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5560         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5561         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5562         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5563     fi
5564
5565     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5566     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5567     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5568     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5569     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5570
5571     if enabled bigendian && enabled msa; then
5572         disable msa
5573     fi
5574
5575 elif enabled parisc; then
5576
5577     if enabled gcc; then
5578         case $($cc -dumpversion) in
5579             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5580         esac
5581     fi
5582
5583 elif enabled ppc; then
5584
5585     enable local_aligned
5586
5587     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5588     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5589     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5590     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5591
5592     if enabled altivec; then
5593         check_cflags -maltivec -mabi=altivec
5594
5595         # check if our compiler supports Motorola AltiVec C API
5596         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5597                                     vector signed int v2 = (vector signed int) { 1 };
5598                                     v1 = vec_add(v1, v2);"
5599
5600         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5601     fi
5602
5603     if enabled vsx; then
5604         check_cflags -mvsx &&
5605         check_cc vsx altivec.h "int v[4] = { 0 };
5606                                 vector signed int v1 = vec_vsx_ld(0, v);"
5607     fi
5608
5609     if enabled power8; then
5610         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5611     fi
5612
5613 elif enabled x86; then
5614
5615     check_builtin rdtsc    intrin.h   "__rdtsc()"
5616     check_builtin mm_empty mmintrin.h "_mm_empty()"
5617
5618     enable local_aligned
5619
5620     # check whether EBP is available on x86
5621     # As 'i' is stored on the stack, this program will crash
5622     # if the base pointer is used to access it because the
5623     # base pointer is cleared in the inline assembly code.
5624     check_exec_crash <<EOF && enable ebp_available
5625 volatile int i=0;
5626 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5627 return i;
5628 EOF
5629
5630     # check whether EBX is available on x86
5631     check_inline_asm ebx_available '""::"b"(0)' &&
5632         check_inline_asm ebx_available '"":::"%ebx"'
5633
5634     # check whether xmm clobbers are supported
5635     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5636
5637     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5638         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5639
5640     # check whether binutils is new enough to compile SSSE3/MMXEXT
5641     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5642     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5643
5644     probe_x86asm(){
5645         x86asmexe_probe=$1
5646         if test_cmd $x86asmexe_probe -v; then
5647             x86asmexe=$x86asmexe_probe
5648             x86asm_type=nasm
5649             x86asm_debug="-g -F dwarf"
5650             X86ASMDEP=
5651             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5652         elif test_cmd $x86asmexe_probe --version; then
5653             x86asmexe=$x86asmexe_probe
5654             x86asm_type=yasm
5655             x86asm_debug="-g dwarf2"
5656             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5657             X86ASM_DEPFLAGS=
5658         fi
5659         check_x86asm x86asm "movbe ecx, [5]"
5660     }
5661
5662     if ! disabled_any asm mmx x86asm; then
5663         disable x86asm
5664         for program in $x86asmexe nasm yasm; do
5665             probe_x86asm $program && break
5666         done
5667         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5668         X86ASMFLAGS="-f $objformat"
5669         enabled pic               && append X86ASMFLAGS "-DPIC"
5670         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5671         case "$objformat" in
5672             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5673         esac
5674
5675         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5676         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5677         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5678         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5679         check_x86asm cpunop          "CPU amdnop"
5680     fi
5681
5682     case "$cpu" in
5683         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5684             disable fast_clz
5685         ;;
5686     esac
5687
5688 fi
5689
5690 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5691
5692 check_ldflags -Wl,--as-needed
5693 check_ldflags -Wl,-z,noexecstack
5694
5695 if ! disabled network; then
5696     check_func getaddrinfo $network_extralibs
5697     check_func inet_aton $network_extralibs
5698
5699     check_type netdb.h "struct addrinfo"
5700     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5701     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5702     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5703     check_type poll.h "struct pollfd"
5704     check_type netinet/sctp.h "struct sctp_event_subscribe"
5705     check_struct "sys/socket.h" "struct msghdr" msg_flags
5706     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5707     check_type netinet/in.h "struct sockaddr_in6"
5708     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5709     check_type "sys/types.h sys/socket.h" socklen_t
5710
5711     # Prefer arpa/inet.h over winsock2
5712     if check_header arpa/inet.h ; then
5713         check_func closesocket
5714     elif check_header winsock2.h ; then
5715         check_func_headers winsock2.h closesocket -lws2 &&
5716             network_extralibs="-lws2" ||
5717         { check_func_headers winsock2.h closesocket -lws2_32 &&
5718             network_extralibs="-lws2_32"; } || disable winsock2_h network
5719         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5720
5721         check_type ws2tcpip.h socklen_t
5722         check_type ws2tcpip.h "struct addrinfo"
5723         check_type ws2tcpip.h "struct group_source_req"
5724         check_type ws2tcpip.h "struct ip_mreq_source"
5725         check_type ws2tcpip.h "struct ipv6_mreq"
5726         check_type winsock2.h "struct pollfd"
5727         check_struct winsock2.h "struct sockaddr" sa_len
5728         check_type ws2tcpip.h "struct sockaddr_in6"
5729         check_type ws2tcpip.h "struct sockaddr_storage"
5730     else
5731         disable network
5732     fi
5733 fi
5734
5735 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5736 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5737 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5738 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5739 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5740 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5741 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5742
5743 case "$custom_allocator" in
5744     jemalloc)
5745         # jemalloc by default does not use a prefix
5746         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5747     ;;
5748     tcmalloc)
5749         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5750         malloc_prefix=tc_
5751     ;;
5752 esac
5753
5754 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5755 check_func  ${malloc_prefix}memalign            && enable memalign
5756 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5757
5758 check_func  access
5759 check_func_headers stdlib.h arc4random
5760 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5761 check_func  fcntl
5762 check_func  fork
5763 check_func  gethrtime
5764 check_func  getopt
5765 check_func  getrusage
5766 check_func  gettimeofday
5767 check_func  isatty
5768 check_func  mkstemp
5769 check_func  mmap
5770 check_func  mprotect
5771 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5772 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5773 check_func  sched_getaffinity
5774 check_func  setrlimit
5775 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5776 check_func  strerror_r
5777 check_func  sysconf
5778 check_func  sysctl
5779 check_func  usleep
5780
5781 check_func_headers conio.h kbhit
5782 check_func_headers io.h setmode
5783 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5784 check_func_headers mach/mach_time.h mach_absolute_time
5785 check_func_headers stdlib.h getenv
5786 check_func_headers sys/stat.h lstat
5787
5788 check_func_headers windows.h GetProcessAffinityMask
5789 check_func_headers windows.h GetProcessTimes
5790 check_func_headers windows.h GetSystemTimeAsFileTime
5791 check_func_headers windows.h LoadLibrary
5792 check_func_headers windows.h MapViewOfFile
5793 check_func_headers windows.h PeekNamedPipe
5794 check_func_headers windows.h SetConsoleTextAttribute
5795 check_func_headers windows.h SetConsoleCtrlHandler
5796 check_func_headers windows.h Sleep
5797 check_func_headers windows.h VirtualAlloc
5798 check_func_headers glob.h glob
5799 enabled xlib &&
5800     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5801
5802 check_header direct.h
5803 check_header dirent.h
5804 check_header dxgidebug.h
5805 check_header dxva.h
5806 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5807 check_header io.h
5808 check_header linux/perf_event.h
5809 check_header libcrystalhd/libcrystalhd_if.h
5810 check_header malloc.h
5811 check_header net/udplite.h
5812 check_header poll.h
5813 check_header sys/param.h
5814 check_header sys/resource.h
5815 check_header sys/select.h
5816 check_header sys/time.h
5817 check_header sys/un.h
5818 check_header termios.h
5819 check_header unistd.h
5820 check_header valgrind/valgrind.h
5821 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5822 check_header windows.h
5823 check_header X11/extensions/XvMClib.h
5824 check_header asm/types.h
5825
5826 # it seems there are versions of clang in some distros that try to use the
5827 # gcc headers, which explodes for stdatomic
5828 # so we also check that atomics actually work here
5829 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5830
5831 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5832 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5833     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5834 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5835 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5836 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5837
5838 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5839 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5840 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5841
5842 enabled appkit       && check_apple_framework AppKit
5843 enabled audiotoolbox && check_apple_framework AudioToolbox
5844 enabled avfoundation && check_apple_framework AVFoundation
5845 enabled coreimage    && check_apple_framework CoreImage
5846 enabled videotoolbox && check_apple_framework VideoToolbox
5847
5848 check_apple_framework CoreFoundation
5849 check_apple_framework CoreMedia
5850 check_apple_framework CoreVideo
5851
5852 enabled avfoundation && {
5853     disable coregraphics applicationservices
5854     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5855     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5856
5857 enabled videotoolbox && {
5858     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5859     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5860 }
5861
5862 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5863
5864 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5865 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5866 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5867 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5868 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5869
5870 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5871 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5872 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5873 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5874 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5875 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5876 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5877 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5878 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5879 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5880
5881 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5882
5883 if ! disabled ffnvcodec; then
5884     check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.1" \
5885         "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5886 fi
5887
5888 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5889
5890 if ! disabled w32threads && ! enabled pthreads; then
5891     check_func_headers "windows.h process.h" _beginthreadex &&
5892         check_type "windows.h" CONDITION_VARIABLE &&
5893         check_type "windows.h" INIT_ONCE &&
5894         enable w32threads || disable w32threads
5895     if ! enabled w32threads && enabled winrt; then
5896         check_func_headers "windows.h" CreateThread &&
5897             enable w32threads || disable w32threads
5898     fi
5899 fi
5900
5901 # check for some common methods of building with pthread support
5902 # do this before the optional library checks as some of them require pthreads
5903 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5904     if check_lib pthreads pthread.h pthread_join   -pthread &&
5905        check_lib pthreads pthread.h pthread_create -pthread; then
5906         add_cflags -pthread
5907     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5908          check_lib pthreads pthread.h pthread_create -pthreads; then
5909         add_cflags -pthreads
5910     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5911          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5912         add_cflags -ldl -pthread
5913     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5914          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5915         :
5916     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5917          check_lib pthreads pthread.h pthread_create -lpthread; then
5918         :
5919     elif check_func pthread_join && check_func pthread_create; then
5920         enable pthreads
5921     fi
5922     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5923
5924     if enabled pthreads; then
5925         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5926         check_func pthread_cancel $pthreads_extralibs
5927     fi
5928 fi
5929
5930 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5931 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5932 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5933
5934 # On some systems dynamic loading requires no extra linker flags
5935 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5936
5937 check_lib libm math.h sin -lm
5938
5939 atan2f_args=2
5940 copysign_args=2
5941 hypot_args=2
5942 ldexpf_args=2
5943 powf_args=2
5944
5945 for func in $MATH_FUNCS; do
5946     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5947 done
5948
5949 for func in $COMPLEX_FUNCS; do
5950     eval check_complexfunc $func \${${func}_args:-1}
5951 done
5952
5953 # these are off by default, so fail if requested and not available
5954 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5955 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5956 enabled decklink          && { require_header DeckLinkAPI.h &&
5957                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5958 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5959 enabled frei0r            && require_header frei0r.h
5960 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5961 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5962 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5963 enabled ladspa            && require_header ladspa.h
5964 enabled libaom            && require_pkg_config libaom "aom >= 0.1.0" aom/aom_codec.h aom_codec_version
5965 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5966 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5967 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5968 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5969 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5970 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5971                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5972                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5973 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5974 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
5975 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5976 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5977 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5978                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5979                                  warn "using libfdk without pkg-config"; } }
5980 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"
5981 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5982 enabled fontconfig        && enable libfontconfig
5983 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5984 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5985 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5986 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5987                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5988 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5989                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5990                                done || die "ERROR: libgsm not found"; }
5991 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5992 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5993 # While it may appear that require is being used as a pkg-config
5994 # fallback for libmfx, it is actually being used to detect a different
5995 # installation route altogether.  If libmfx is installed via the Intel
5996 # Media SDK or Intel Media Server Studio, these don't come with
5997 # pkg-config support.  Instead, users should make sure that the build
5998 # can find the libraries and headers through other means.
5999 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6000                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6001 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6002 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6003 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
6004 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6005                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6006                                die "ERROR: libnpp not found"; }
6007 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6008 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6009 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6010                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6011                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6012                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6013 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6014 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6015                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6016 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6017 enabled libopus           && {
6018     enabled libopus_decoder && {
6019         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6020     }
6021     enabled libopus_encoder && {
6022         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6023     }
6024 }
6025 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6026 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6027 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6028 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6029 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6030 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6031                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6032 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6033 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6034 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6035 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6036 enabled libsrt            && require_pkg_config libsrt "srt >= 1.2.0" srt/srt.h srt_socket
6037 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6038 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6039 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6040 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6041                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6042                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6043 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6044 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6045 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
6046 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6047 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6048                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6049
6050 enabled libvpx            && {
6051     enabled libvpx_vp8_decoder && {
6052         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6053             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6054                 die "ERROR: libvpx decoder version must be >=1.4.0";
6055     }
6056     enabled libvpx_vp8_encoder && {
6057         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6058             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6059                 die "ERROR: libvpx encoder version must be >=1.4.0";
6060     }
6061     enabled libvpx_vp9_decoder && {
6062         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6063             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6064     }
6065     enabled libvpx_vp9_encoder && {
6066         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6067             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6068     }
6069     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6070         die "libvpx enabled but no supported decoders found"
6071     fi
6072 }
6073
6074 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6075 enabled libwebp           && {
6076     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6077     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6078 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6079                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6080                                  warn "using libx264 without pkg-config"; } } &&
6081                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6082                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6083 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6084                              require_cpp_condition x265.h "X265_BUILD >= 68"
6085 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6086 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6087 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6088 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6089 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6090                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6091                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6092 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6093 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6094 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6095                                { ! enabled cross_compile &&
6096                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6097                                  add_ldflags -L/opt/vc/lib/ &&
6098                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6099                                die "ERROR: mmal not found" &&
6100                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6101 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6102                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6103                                die "ERROR: openal not found"; } &&
6104                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6105                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6106 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6107                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6108                                die "ERROR: opencl not found"; } &&
6109                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6110                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6111                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6112 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6113                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6114                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6115                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6116                                die "ERROR: opengl not found."
6117                              }
6118 enabled omx               && require_header OMX_Core.h
6119 enabled omx_rpi           && { check_header OMX_Core.h ||
6120                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6121                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6122 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6123                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6124                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6125                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6126                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6127                                die "ERROR: openssl not found"; }
6128 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6129                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6130                                { enabled libdrm ||
6131                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6132                              }
6133
6134 if enabled gcrypt; then
6135     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6136     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6137         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6138         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6139         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6140             die "ERROR: gcrypt not found"
6141         add_cflags $gcrypt_cflags
6142     else
6143         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6144     fi
6145 fi
6146
6147 if enabled sdl2; then
6148     SDL2_CONFIG="${cross_prefix}sdl2-config"
6149     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6150     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6151         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6152         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6153         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6154         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6155         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6156             enable sdl2
6157     fi
6158     if test $target_os = "mingw32"; then
6159         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6160     fi
6161 fi
6162
6163 if enabled decklink; then
6164     case $target_os in
6165         mingw32*|mingw64*|win32|win64)
6166             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6167             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6168             ;;
6169     esac
6170 fi
6171
6172 enabled securetransport &&
6173     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6174     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6175         disable securetransport
6176
6177 enabled securetransport &&
6178     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6179
6180 enabled schannel &&
6181     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6182     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6183     schannel_extralibs="-lsecur32" ||
6184         disable schannel
6185
6186 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6187 enabled makeinfo \
6188     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6189     && enable makeinfo_html || disable makeinfo_html
6190 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6191 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6192 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6193 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6194
6195 # check V4L2 codecs available in the API
6196 check_header linux/fb.h
6197 check_header linux/videodev2.h
6198 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6199 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6200 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6201 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6202 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6203 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6204 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6205 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6206 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6207 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6208 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6209
6210 check_header sys/videoio.h
6211 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6212
6213 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6214 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6215 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6216 # w32api 3.12 had it defined wrong
6217 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6218
6219 check_type "dshow.h" IBaseFilter
6220
6221 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6222 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6223     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6224     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6225     check_header "dev/ic/bt8xx.h"
6226
6227 if check_struct sys/soundcard.h audio_buf_info bytes; then
6228     enable_sanitized sys/soundcard.h
6229 else
6230     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6231     #include <sys/soundcard.h>
6232     audio_buf_info abc;
6233 EOF
6234 fi
6235
6236 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6237     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6238
6239 enabled libjack &&
6240     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6241
6242 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6243
6244 if enabled libcdio; then
6245     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6246     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6247     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6248     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6249     die "ERROR: No usable libcdio/cdparanoia found"
6250 fi
6251
6252 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6253     disable libxcb_shm libxcb_shape libxcb_xfixes
6254
6255 if enabled libxcb; then
6256     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6257     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6258     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6259 fi
6260
6261 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6262
6263 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6264 # the desktop api partition
6265 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6266 #ifdef WINAPI_FAMILY
6267 #include <winapifamily.h>
6268 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6269 #error desktop, not uwp
6270 #else
6271 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6272 #endif
6273 #else
6274 #error no family set
6275 #endif
6276 EOF
6277
6278 enabled vaapi &&
6279     check_lib vaapi va/va.h vaInitialize -lva
6280
6281 enabled vaapi &&
6282     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6283
6284 if enabled vaapi; then
6285     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6286     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6287 fi
6288
6289 enabled vaapi &&
6290     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6291
6292 if enabled_all opencl libdrm ; then
6293     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6294         enable opencl_drm_beignet
6295     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6296         enable opencl_drm_arm
6297 fi
6298
6299 if enabled_all opencl vaapi ; then
6300     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6301     if enabled libmfx ; then
6302         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6303             enable opencl_vaapi_intel_media
6304     fi
6305 fi
6306
6307 if enabled_all opencl dxva2 ; then
6308     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6309         enable opencl_dxva2
6310 fi
6311
6312 if enabled_all opencl d3d11va ; then
6313     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6314         enable opencl_d3d11
6315 fi
6316
6317 enabled vdpau &&
6318     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6319
6320 enabled vdpau &&
6321     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6322
6323 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6324
6325 if enabled x86; then
6326     case $target_os in
6327         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6328             ;;
6329         *)
6330             disable ffnvcodec cuvid nvdec nvenc
6331             ;;
6332     esac
6333 else
6334     disable ffnvcodec cuvid nvdec nvenc
6335 fi
6336
6337 enabled ffnvcodec && enable cuda
6338
6339 enabled nvenc &&
6340     test_cc -I$source_path <<EOF || disable nvenc
6341 #include <ffnvcodec/nvEncodeAPI.h>
6342 NV_ENCODE_API_FUNCTION_LIST flist;
6343 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6344 int main(void) { return 0; }
6345 EOF
6346
6347 enabled amf &&
6348     check_cpp_condition amf "AMF/core/Version.h" \
6349         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6350
6351 # Funny iconv installations are not unusual, so check it after all flags have been set
6352 if enabled libc_iconv; then
6353     check_func_headers iconv.h iconv
6354 elif enabled iconv; then
6355     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6356 fi
6357
6358 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6359
6360 # add some useful compiler flags if supported
6361 check_cflags -Wdeclaration-after-statement
6362 check_cflags -Wall
6363 check_cflags -Wdisabled-optimization
6364 check_cflags -Wpointer-arith
6365 check_cflags -Wredundant-decls
6366 check_cflags -Wwrite-strings
6367 check_cflags -Wtype-limits
6368 check_cflags -Wundef
6369 check_cflags -Wmissing-prototypes
6370 check_cflags -Wno-pointer-to-int-cast
6371 check_cflags -Wstrict-prototypes
6372 check_cflags -Wempty-body
6373
6374 if enabled extra_warnings; then
6375     check_cflags -Wcast-qual
6376     check_cflags -Wextra
6377     check_cflags -Wpedantic
6378 fi
6379
6380 check_disable_warning(){
6381     warning_flag=-W${1#-Wno-}
6382     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6383 }
6384
6385 test_cflags -Werror=unused-command-line-argument &&
6386     append unknown_warning_flags "-Werror=unused-command-line-argument"
6387 test_cflags -Werror=unknown-warning-option &&
6388     append unknown_warning_flags "-Werror=unknown-warning-option"
6389
6390 check_disable_warning -Wno-parentheses
6391 check_disable_warning -Wno-switch
6392 check_disable_warning -Wno-format-zero-length
6393 check_disable_warning -Wno-pointer-sign
6394 check_disable_warning -Wno-unused-const-variable
6395 check_disable_warning -Wno-bool-operation
6396
6397 check_disable_warning_headers(){
6398     warning_flag=-W${1#-Wno-}
6399     test_cflags $warning_flag && add_cflags_headers $1
6400 }
6401
6402 check_disable_warning_headers -Wno-deprecated-declarations
6403 check_disable_warning_headers -Wno-unused-variable
6404
6405 test_cc <<EOF && enable blocks_extension
6406 void (^block)(void);
6407 EOF
6408
6409 # add some linker flags
6410 check_ldflags -Wl,--warn-common
6411 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6412 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6413 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6414
6415 # add some strip flags
6416 check_stripflags -x
6417
6418 enabled neon_clobber_test &&
6419     check_ldflags -Wl,--wrap,avcodec_open2              \
6420                   -Wl,--wrap,avcodec_decode_audio4      \
6421                   -Wl,--wrap,avcodec_decode_video2      \
6422                   -Wl,--wrap,avcodec_decode_subtitle2   \
6423                   -Wl,--wrap,avcodec_encode_audio2      \
6424                   -Wl,--wrap,avcodec_encode_video2      \
6425                   -Wl,--wrap,avcodec_encode_subtitle    \
6426                   -Wl,--wrap,avcodec_send_packet        \
6427                   -Wl,--wrap,avcodec_receive_packet     \
6428                   -Wl,--wrap,avcodec_send_frame         \
6429                   -Wl,--wrap,avcodec_receive_frame      \
6430                   -Wl,--wrap,swr_convert                \
6431                   -Wl,--wrap,avresample_convert ||
6432     disable neon_clobber_test
6433
6434 enabled xmm_clobber_test &&
6435     check_ldflags -Wl,--wrap,avcodec_open2              \
6436                   -Wl,--wrap,avcodec_decode_audio4      \
6437                   -Wl,--wrap,avcodec_decode_video2      \
6438                   -Wl,--wrap,avcodec_decode_subtitle2   \
6439                   -Wl,--wrap,avcodec_encode_audio2      \
6440                   -Wl,--wrap,avcodec_encode_video2      \
6441                   -Wl,--wrap,avcodec_encode_subtitle    \
6442                   -Wl,--wrap,avcodec_send_packet        \
6443                   -Wl,--wrap,avcodec_receive_packet     \
6444                   -Wl,--wrap,avcodec_send_frame         \
6445                   -Wl,--wrap,avcodec_receive_frame      \
6446                   -Wl,--wrap,swr_convert                \
6447                   -Wl,--wrap,avresample_convert         \
6448                   -Wl,--wrap,sws_scale ||
6449     disable xmm_clobber_test
6450
6451 check_ld "cc" proper_dce <<EOF
6452 extern const int array[512];
6453 static inline int func(void) { return array[0]; }
6454 int main(void) { return 0; }
6455 EOF
6456
6457 if enabled proper_dce; then
6458     echo "X { local: *; };" > $TMPV
6459     if test_ldflags -Wl,${version_script},$TMPV; then
6460         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6461         quotes='""'
6462         test_cc <<EOF && enable symver_asm_label
6463 void ff_foo(void) __asm__ ("av_foo@VERSION");
6464 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6465 EOF
6466         test_cc <<EOF && enable symver_gnu_asm
6467 __asm__(".symver ff_foo,av_foo@VERSION");
6468 void ff_foo(void) {}
6469 EOF
6470     fi
6471 fi
6472
6473 if [ -z "$optflags" ]; then
6474     if enabled small; then
6475         optflags=$cflags_size
6476     elif enabled optimizations; then
6477         optflags=$cflags_speed
6478     else
6479         optflags=$cflags_noopt
6480     fi
6481 fi
6482
6483 if [ -z "$nvccflags" ]; then
6484     nvccflags=$nvccflags_default
6485 fi
6486
6487 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6488     nvccflags="$nvccflags -m64"
6489 else
6490     nvccflags="$nvccflags -m32"
6491 fi
6492
6493 check_optflags(){
6494     check_cflags "$@"
6495     enabled lto && check_ldflags "$@"
6496 }
6497
6498 check_optflags $optflags
6499 check_optflags -fno-math-errno
6500 check_optflags -fno-signed-zeros
6501
6502 if enabled lto; then
6503     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6504     check_cflags  -flto
6505     check_ldflags -flto $cpuflags
6506     disable inline_asm_direct_symbol_refs
6507 fi
6508
6509 enabled ftrapv && check_cflags -ftrapv
6510
6511 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6512 int x;
6513 EOF
6514
6515
6516 if enabled icc; then
6517     # Just warnings, no remarks
6518     check_cflags -w1
6519     # -wd: Disable following warnings
6520     # 144, 167, 556: -Wno-pointer-sign
6521     # 188: enumerated type mixed with another type
6522     # 1292: attribute "foo" ignored
6523     # 1419: external declaration in primary source file
6524     # 10006: ignoring unknown option -fno-signed-zeros
6525     # 10148: ignoring unknown option -Wno-parentheses
6526     # 10156: ignoring option '-W'; no argument required
6527     # 13200: No EMMS instruction before call to function
6528     # 13203: No EMMS instruction before return from function
6529     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6530     # 11030: Warning unknown option --as-needed
6531     # 10156: ignoring option '-export'; no argument required
6532     check_ldflags -wd10156,11030
6533     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6534     enable ebp_available
6535     # The test above does not test linking
6536     enabled lto && disable symver_asm_label
6537     if enabled x86_32; then
6538         icc_version=$($cc -dumpversion)
6539         test ${icc_version%%.*} -ge 11 &&
6540             check_cflags -falign-stack=maintain-16-byte ||
6541             disable aligned_stack
6542     fi
6543 elif enabled gcc; then
6544     check_optflags -fno-tree-vectorize
6545     check_cflags -Werror=format-security
6546     check_cflags -Werror=implicit-function-declaration
6547     check_cflags -Werror=missing-prototypes
6548     check_cflags -Werror=return-type
6549     check_cflags -Werror=vla
6550     check_cflags -Wformat
6551     check_cflags -fdiagnostics-color=auto
6552     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6553     if enabled x86_32; then
6554         case $target_os in
6555         *bsd*)
6556             # BSDs don't guarantee a 16 byte aligned stack, but we can
6557             # request GCC to try to maintain 16 byte alignment throughout
6558             # function calls. Library entry points that might call assembly
6559             # functions align the stack. (The parameter means 2^4 bytes.)
6560             check_cflags -mpreferred-stack-boundary=4
6561             ;;
6562         esac
6563     fi
6564 elif enabled llvm_gcc; then
6565     check_cflags -mllvm -stack-alignment=16
6566 elif enabled clang; then
6567     if enabled x86_32; then
6568         # Clang doesn't support maintaining alignment without assuming the
6569         # same alignment in every function. If 16 byte alignment would be
6570         # enabled, one would also have to either add attribute_align_arg on
6571         # every single entry point into the libraries or enable -mstackrealign
6572         # (doing stack realignment in every single function).
6573         case $target_os in
6574         mingw32|win32|*bsd*)
6575             disable aligned_stack
6576             ;;
6577         *)
6578             check_cflags -mllvm -stack-alignment=16
6579             check_cflags -mstack-alignment=16
6580             ;;
6581         esac
6582     else
6583         check_cflags -mllvm -stack-alignment=16
6584         check_cflags -mstack-alignment=16
6585     fi
6586     check_cflags -Qunused-arguments
6587     check_cflags -Werror=implicit-function-declaration
6588     check_cflags -Werror=missing-prototypes
6589     check_cflags -Werror=return-type
6590 elif enabled cparser; then
6591     add_cflags -Wno-missing-variable-declarations
6592     add_cflags -Wno-empty-statement
6593 elif enabled armcc; then
6594     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6595     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6596     # 2523: use of inline assembly is deprecated
6597     add_cflags -W${armcc_opt},--diag_suppress=2523
6598     add_cflags -W${armcc_opt},--diag_suppress=1207
6599     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6600     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6601     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6602     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6603 elif enabled pathscale; then
6604     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6605     disable inline_asm
6606 elif enabled_any msvc icl; then
6607     enabled x86_32 && disable aligned_stack
6608     enabled_all x86_32 debug && add_cflags -Oy-
6609     enabled debug && add_ldflags -debug
6610     enable pragma_deprecated
6611     if enabled icl; then
6612         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6613         # (correctly) on icl 13.x.
6614         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6615             add_cflags -Qansi-alias
6616         # Some inline asm is not compilable in debug
6617         if enabled debug; then
6618             disable ebp_available
6619             disable ebx_available
6620         fi
6621     fi
6622     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6623     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6624     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6625     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6626     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6627     # MSVC 2013 and newer can handle it fine.
6628     # If this declspec fails, force including stdlib.h before the restrict redefinition
6629     # happens in config.h.
6630     if [ $restrict_keyword != restrict ]; then
6631         test_cc <<EOF || add_cflags -FIstdlib.h
6632 __declspec($restrict_keyword) void *foo(int);
6633 EOF
6634     fi
6635     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6636     # Issue has been fixed in MSVC v19.00.24218.
6637     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6638         check_cflags -d2SSAOptimizer-
6639     # enable utf-8 source processing on VS2015 U2 and newer
6640     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6641         add_cflags -utf-8
6642 fi
6643
6644 for pfx in "" host_; do
6645     varname=${pfx%_}cc_type
6646     eval "type=\$$varname"
6647     if [ "$type" = "msvc" ]; then
6648         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6649 static inline int foo(int a) { return a; }
6650 EOF
6651     fi
6652 done
6653
6654 case $as_type in
6655     clang)
6656         add_asflags -Qunused-arguments
6657     ;;
6658 esac
6659
6660 case $ld_type in
6661     clang)
6662         check_ldflags -Qunused-arguments
6663     ;;
6664 esac
6665
6666 enable frame_thread_encoder
6667
6668 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6669
6670 check_deps $CONFIG_LIST       \
6671            $CONFIG_EXTRA      \
6672            $HAVE_LIST         \
6673            $ALL_COMPONENTS    \
6674
6675 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"
6676 enabled avresample && warn "Building with deprecated library libavresample"
6677
6678 if test $target_os = "haiku"; then
6679     disable memalign
6680     disable posix_memalign
6681 fi
6682
6683 flatten_extralibs(){
6684     unset nested_entries
6685     list_name=$1
6686     eval list=\$${1}
6687     for entry in $list; do
6688         entry_copy=$entry
6689         resolve entry_copy
6690         append nested_entries $(filter '*_extralibs' $entry_copy)
6691         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6692         eval $entry="\$flat_entries"
6693     done
6694     append $list_name "$nested_entries"
6695
6696     resolve nested_entries
6697     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6698         flatten_extralibs $list_name
6699     fi
6700 }
6701
6702 flatten_extralibs_wrapper(){
6703     list_name=$1
6704     flatten_extralibs $list_name
6705     unique $list_name
6706     resolve $list_name
6707     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6708     eval printf \''%s'\' \""\$$list_name"\"
6709 }
6710
6711 for linkunit in $LIBRARY_LIST; do
6712     unset current_extralibs
6713     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6714     for comp in ${components}; do
6715         enabled $comp || continue
6716         comp_extralibs="${comp}_extralibs"
6717         append current_extralibs $comp_extralibs
6718     done
6719     eval prepend ${linkunit}_extralibs $current_extralibs
6720 done
6721
6722 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6723     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6724 done
6725
6726 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6727
6728 for thread in $THREADS_LIST; do
6729     if enabled $thread; then
6730         test -n "$thread_type" &&
6731             die "ERROR: Only one thread type must be selected." ||
6732             thread_type="$thread"
6733     fi
6734 done
6735
6736 if disabled stdatomic; then
6737     if enabled atomics_gcc; then
6738         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6739     elif enabled atomics_win32; then
6740         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6741     elif enabled atomics_suncc; then
6742         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6743     elif enabled pthreads; then
6744         add_compat atomics/pthread/stdatomic.o
6745         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6746     else
6747         enabled threads && die "Threading is enabled, but no atomics are available"
6748         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6749     fi
6750 fi
6751
6752 # Check if requested libraries were found.
6753 for lib in $AUTODETECT_LIBS; do
6754     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6755 done
6756
6757 enabled zlib && add_cppflags -DZLIB_CONST
6758
6759 # conditional library dependencies, in linking order
6760 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6761 enabled afir_filter         && prepend avfilter_deps "avcodec"
6762 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6763 enabled aresample_filter    && prepend avfilter_deps "swresample"
6764 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6765 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6766 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6767 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6768 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6769 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6770 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6771 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6772 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6773 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6774 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6775 enabled pan_filter          && prepend avfilter_deps "swresample"
6776 enabled pp_filter           && prepend avfilter_deps "postproc"
6777 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6778 enabled resample_filter && prepend avfilter_deps "avresample"
6779 enabled sab_filter          && prepend avfilter_deps "swscale"
6780 enabled scale_filter    && prepend avfilter_deps "swscale"
6781 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6782 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6783 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6784 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6785 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6786 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6787 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6788 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6789 enabled spp_filter          && prepend avfilter_deps "avcodec"
6790 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6791 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6792 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6793
6794 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6795
6796 #FIXME
6797 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6798
6799 enabled opus_decoder    && prepend avcodec_deps "swresample"
6800
6801 expand_deps(){
6802     lib_deps=${1}_deps
6803     eval "deps=\$$lib_deps"
6804     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6805     unique $lib_deps
6806 }
6807
6808 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6809 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6810
6811 map 'expand_deps $v' $LIBRARY_LIST
6812
6813 if test "$quiet" != "yes"; then
6814
6815 echo "install prefix            $prefix"
6816 echo "source path               $source_path"
6817 echo "C compiler                $cc"
6818 echo "C library                 $libc_type"
6819 if test "$host_cc" != "$cc"; then
6820     echo "host C compiler           $host_cc"
6821     echo "host C library            $host_libc_type"
6822 fi
6823 echo "ARCH                      $arch ($cpu)"
6824 if test "$build_suffix" != ""; then
6825     echo "build suffix              $build_suffix"
6826 fi
6827 if test "$progs_suffix" != ""; then
6828     echo "progs suffix              $progs_suffix"
6829 fi
6830 if test "$extra_version" != ""; then
6831     echo "version string suffix     $extra_version"
6832 fi
6833 echo "big-endian                ${bigendian-no}"
6834 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6835 if enabled x86; then
6836     echo "standalone assembly       ${x86asm-no}"
6837     echo "x86 assembler             ${x86asmexe}"
6838     echo "MMX enabled               ${mmx-no}"
6839     echo "MMXEXT enabled            ${mmxext-no}"
6840     echo "3DNow! enabled            ${amd3dnow-no}"
6841     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6842     echo "SSE enabled               ${sse-no}"
6843     echo "SSSE3 enabled             ${ssse3-no}"
6844     echo "AESNI enabled             ${aesni-no}"
6845     echo "AVX enabled               ${avx-no}"
6846     echo "AVX2 enabled              ${avx2-no}"
6847     echo "AVX-512 enabled           ${avx512-no}"
6848     echo "XOP enabled               ${xop-no}"
6849     echo "FMA3 enabled              ${fma3-no}"
6850     echo "FMA4 enabled              ${fma4-no}"
6851     echo "i686 features enabled     ${i686-no}"
6852     echo "CMOV is fast              ${fast_cmov-no}"
6853     echo "EBX available             ${ebx_available-no}"
6854     echo "EBP available             ${ebp_available-no}"
6855 fi
6856 if enabled aarch64; then
6857     echo "NEON enabled              ${neon-no}"
6858     echo "VFP enabled               ${vfp-no}"
6859 fi
6860 if enabled arm; then
6861     echo "ARMv5TE enabled           ${armv5te-no}"
6862     echo "ARMv6 enabled             ${armv6-no}"
6863     echo "ARMv6T2 enabled           ${armv6t2-no}"
6864     echo "VFP enabled               ${vfp-no}"
6865     echo "NEON enabled              ${neon-no}"
6866     echo "THUMB enabled             ${thumb-no}"
6867 fi
6868 if enabled mips; then
6869     echo "MIPS FPU enabled          ${mipsfpu-no}"
6870     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6871     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6872     echo "MIPS MSA enabled          ${msa-no}"
6873     echo "LOONGSON MMI enabled      ${mmi-no}"
6874 fi
6875 if enabled ppc; then
6876     echo "AltiVec enabled           ${altivec-no}"
6877     echo "VSX enabled               ${vsx-no}"
6878     echo "POWER8 enabled            ${power8-no}"
6879     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6880     echo "dcbzl available           ${dcbzl-no}"
6881 fi
6882 echo "debug symbols             ${debug-no}"
6883 echo "strip symbols             ${stripping-no}"
6884 echo "optimize for size         ${small-no}"
6885 echo "optimizations             ${optimizations-no}"
6886 echo "static                    ${static-no}"
6887 echo "shared                    ${shared-no}"
6888 echo "postprocessing support    ${postproc-no}"
6889 echo "network support           ${network-no}"
6890 echo "threading support         ${thread_type-no}"
6891 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6892 echo "texi2html enabled         ${texi2html-no}"
6893 echo "perl enabled              ${perl-no}"
6894 echo "pod2man enabled           ${pod2man-no}"
6895 echo "makeinfo enabled          ${makeinfo-no}"
6896 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6897 test -n "$random_seed" &&
6898     echo "random seed               ${random_seed}"
6899 echo
6900
6901 echo "External libraries:"
6902 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6903 echo
6904
6905 echo "External libraries providing hardware acceleration:"
6906 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6907 echo
6908
6909 echo "Libraries:"
6910 print_enabled '' $LIBRARY_LIST | print_in_columns
6911 echo
6912
6913 echo "Programs:"
6914 print_enabled '' $PROGRAM_LIST | print_in_columns
6915 echo
6916
6917 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6918     echo "Enabled ${type}s:"
6919     eval list=\$$(toupper $type)_LIST
6920     print_enabled '_*' $list | print_in_columns
6921     echo
6922 done
6923
6924 if test -n "$ignore_tests"; then
6925     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6926     echo "Ignored FATE tests:"
6927     echo $ignore_tests | print_in_columns
6928     echo
6929 fi
6930
6931 echo "License: $license"
6932
6933 fi # test "$quiet" != "yes"
6934
6935 if test -n "$WARNINGS"; then
6936     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6937     enabled fatal_warnings && exit 1
6938 fi
6939
6940 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6941
6942 esc(){
6943     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6944 }
6945
6946 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6947
6948 enabled stripping || strip="echo skipping strip"
6949 enabled stripping || striptype=""
6950
6951 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6952
6953 cat > ffbuild/config.mak <<EOF
6954 # Automatically generated by configure - do not modify!
6955 ifndef FFMPEG_CONFIG_MAK
6956 FFMPEG_CONFIG_MAK=1
6957 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6958 prefix=$prefix
6959 LIBDIR=\$(DESTDIR)$libdir
6960 SHLIBDIR=\$(DESTDIR)$shlibdir
6961 INCDIR=\$(DESTDIR)$incdir
6962 BINDIR=\$(DESTDIR)$bindir
6963 DATADIR=\$(DESTDIR)$datadir
6964 DOCDIR=\$(DESTDIR)$docdir
6965 MANDIR=\$(DESTDIR)$mandir
6966 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6967 INSTALL_NAME_DIR=$install_name_dir
6968 SRC_PATH=$source_path
6969 SRC_LINK=$source_link
6970 ifndef MAIN_MAKEFILE
6971 SRC_PATH:=\$(SRC_PATH:.%=..%)
6972 endif
6973 CC_IDENT=$cc_ident
6974 ARCH=$arch
6975 INTRINSICS=$intrinsics
6976 EXTERN_PREFIX=$extern_prefix
6977 CC=$cc
6978 CXX=$cxx
6979 AS=$as
6980 OBJCC=$objcc
6981 LD=$ld
6982 DEPCC=$dep_cc
6983 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6984 DEPAS=$as
6985 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6986 X86ASM=$x86asmexe
6987 DEPX86ASM=$x86asmexe
6988 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6989 AR=$ar
6990 ARFLAGS=$arflags
6991 AR_O=$ar_o
6992 AR_CMD=$ar
6993 NM_CMD=$nm
6994 RANLIB=$ranlib
6995 STRIP=$strip
6996 STRIPTYPE=$striptype
6997 NVCC=$nvcc
6998 CP=cp -p
6999 LN_S=$ln_s
7000 CPPFLAGS=$CPPFLAGS
7001 CFLAGS=$CFLAGS
7002 CXXFLAGS=$CXXFLAGS
7003 OBJCFLAGS=$OBJCFLAGS
7004 ASFLAGS=$ASFLAGS
7005 NVCCFLAGS=$nvccflags
7006 AS_C=$AS_C
7007 AS_O=$AS_O
7008 OBJCC_C=$OBJCC_C
7009 OBJCC_E=$OBJCC_E
7010 OBJCC_O=$OBJCC_O
7011 CC_C=$CC_C
7012 CC_E=$CC_E
7013 CC_O=$CC_O
7014 CXX_C=$CXX_C
7015 CXX_O=$CXX_O
7016 NVCC_C=$NVCC_C
7017 NVCC_O=$NVCC_O
7018 LD_O=$LD_O
7019 X86ASM_O=$X86ASM_O
7020 LD_LIB=$LD_LIB
7021 LD_PATH=$LD_PATH
7022 DLLTOOL=$dlltool
7023 WINDRES=$windres
7024 DEPWINDRES=$dep_cc
7025 DOXYGEN=$doxygen
7026 LDFLAGS=$LDFLAGS
7027 LDEXEFLAGS=$LDEXEFLAGS
7028 LDSOFLAGS=$LDSOFLAGS
7029 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7030 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7031 X86ASMFLAGS=$X86ASMFLAGS
7032 BUILDSUF=$build_suffix
7033 PROGSSUF=$progs_suffix
7034 FULLNAME=$FULLNAME
7035 LIBPREF=$LIBPREF
7036 LIBSUF=$LIBSUF
7037 LIBNAME=$LIBNAME
7038 SLIBPREF=$SLIBPREF
7039 SLIBSUF=$SLIBSUF
7040 EXESUF=$EXESUF
7041 EXTRA_VERSION=$extra_version
7042 CCDEP=$CCDEP
7043 CXXDEP=$CXXDEP
7044 CCDEP_FLAGS=$CCDEP_FLAGS
7045 ASDEP=$ASDEP
7046 ASDEP_FLAGS=$ASDEP_FLAGS
7047 X86ASMDEP=$X86ASMDEP
7048 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7049 CC_DEPFLAGS=$CC_DEPFLAGS
7050 AS_DEPFLAGS=$AS_DEPFLAGS
7051 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7052 HOSTCC=$host_cc
7053 HOSTLD=$host_ld
7054 HOSTCFLAGS=$host_cflags
7055 HOSTCPPFLAGS=$host_cppflags
7056 HOSTEXESUF=$HOSTEXESUF
7057 HOSTLDFLAGS=$host_ldflags
7058 HOSTEXTRALIBS=$host_extralibs
7059 DEPHOSTCC=$host_cc
7060 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7061 HOSTCCDEP=$HOSTCCDEP
7062 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7063 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7064 HOSTCC_C=$HOSTCC_C
7065 HOSTCC_O=$HOSTCC_O
7066 HOSTLD_O=$HOSTLD_O
7067 TARGET_EXEC=$target_exec $target_exec_args
7068 TARGET_PATH=$target_path
7069 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7070 CFLAGS-ffplay=${sdl2_cflags}
7071 CFLAGS_HEADERS=$CFLAGS_HEADERS
7072 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7073 EXTRALIBS=$extralibs
7074 COMPAT_OBJS=$compat_objs
7075 INSTALL=$install
7076 LIBTARGET=${LIBTARGET}
7077 SLIBNAME=${SLIBNAME}
7078 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7079 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7080 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7081 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7082 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7083 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7084 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7085 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7086 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7087 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7088 NOREDZONE_FLAGS=$noredzone_flags
7089 LIBFUZZER_PATH=$libfuzzer_path
7090 IGNORE_TESTS=$ignore_tests
7091 EOF
7092
7093 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7094
7095 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7096     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7097 done
7098
7099 cat > $TMPH <<EOF
7100 /* Automatically generated by configure - do not modify! */
7101 #ifndef FFMPEG_CONFIG_H
7102 #define FFMPEG_CONFIG_H
7103 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7104 #define FFMPEG_LICENSE "$(c_escape $license)"
7105 #define CONFIG_THIS_YEAR 2018
7106 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7107 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7108 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7109 #define av_restrict $restrict_keyword
7110 #define EXTERN_PREFIX "${extern_prefix}"
7111 #define EXTERN_ASM ${extern_prefix}
7112 #define BUILDSUF "$build_suffix"
7113 #define SLIBSUF "$SLIBSUF"
7114 #define HAVE_MMX2 HAVE_MMXEXT
7115 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7116 EOF
7117
7118 test -n "$assert_level" &&
7119     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7120
7121 test -n "$malloc_prefix" &&
7122     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7123
7124 if enabled x86asm; then
7125     append config_files $TMPASM
7126     cat > $TMPASM <<EOF
7127 ; Automatically generated by configure - do not modify!
7128 EOF
7129 fi
7130
7131 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7132
7133
7134 mkdir -p doc
7135 mkdir -p tests
7136 mkdir -p tests/api
7137 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7138
7139 print_config ARCH_   "$config_files" $ARCH_LIST
7140 print_config HAVE_   "$config_files" $HAVE_LIST
7141 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7142                                      $CONFIG_EXTRA      \
7143                                      $ALL_COMPONENTS    \
7144
7145 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7146 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7147
7148 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7149 cp_if_changed $TMPH config.h
7150 touch ffbuild/.config
7151
7152 enabled x86asm && cp_if_changed $TMPASM config.asm
7153
7154 cat > $TMPH <<EOF
7155 /* Generated by ffmpeg configure */
7156 #ifndef AVUTIL_AVCONFIG_H
7157 #define AVUTIL_AVCONFIG_H
7158 EOF
7159
7160 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7161
7162 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7163
7164 cp_if_changed $TMPH libavutil/avconfig.h
7165
7166 full_filter_name(){
7167     sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_$1;/\1_$1/p" $source_path/libavfilter/allfilters.c
7168 }
7169
7170 # generate the lists of enabled components
7171 print_enabled_components(){
7172     file=$1
7173     struct_name=$2
7174     name=$3
7175     shift 3
7176     echo "static const $struct_name * const $name[] = {" > $TMPH
7177     for c in $*; do
7178         if enabled $c; then
7179             case $name in
7180                 filter_list)
7181                     c=$(full_filter_name $(remove_suffix _filter $c))
7182                 ;;
7183                 indev_list)
7184                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7185                 ;;
7186                 outdev_list)
7187                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7188                 ;;
7189             esac
7190             printf "    &ff_%s,\n" $c >> $TMPH
7191         fi
7192     done
7193     if [ "$name" = "filter_list" ]; then
7194         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7195             printf "    &ff_%s,\n" $c >> $TMPH
7196         done
7197     fi
7198     echo "    NULL };" >> $TMPH
7199     cp_if_changed $TMPH $file
7200 }
7201
7202 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7203 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7204 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7205 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7206 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7207 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7208 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7209 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7210 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7211
7212 # Settings for pkg-config files
7213
7214 cat > $TMPH <<EOF
7215 # Automatically generated by configure - do not modify!
7216 shared=$shared
7217 build_suffix=$build_suffix
7218 prefix=$prefix
7219 libdir=$libdir
7220 incdir=$incdir
7221 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7222 source_path=${source_path}
7223 LIBPREF=${LIBPREF}
7224 LIBSUF=${LIBSUF}
7225 extralibs_avutil="$avutil_extralibs"
7226 extralibs_avcodec="$avcodec_extralibs"
7227 extralibs_avformat="$avformat_extralibs"
7228 extralibs_avdevice="$avdevice_extralibs"
7229 extralibs_avfilter="$avfilter_extralibs"
7230 extralibs_avresample="$avresample_extralibs"
7231 extralibs_postproc="$postproc_extralibs"
7232 extralibs_swscale="$swscale_extralibs"
7233 extralibs_swresample="$swresample_extralibs"
7234 EOF
7235
7236 for lib in $LIBRARY_LIST; do
7237     lib_deps="$(eval echo \$${lib}_deps)"
7238     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7239 done
7240
7241 cp_if_changed $TMPH ffbuild/config.sh