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