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