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