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 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3085 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3086 alsa_indev_deps="alsa"
3087 alsa_outdev_deps="alsa"
3088 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3089 avfoundation_indev_suggest="coregraphics applicationservices"
3090 avfoundation_indev_extralibs="-framework Foundation"
3091 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3092 caca_outdev_deps="libcaca"
3093 decklink_deps_any="libdl LoadLibrary"
3094 decklink_indev_deps="decklink threads"
3095 decklink_indev_extralibs="-lstdc++"
3096 decklink_outdev_deps="decklink threads"
3097 decklink_outdev_extralibs="-lstdc++"
3098 libndi_newtek_indev_deps="libndi_newtek"
3099 libndi_newtek_indev_extralibs="-lndi"
3100 libndi_newtek_outdev_deps="libndi_newtek"
3101 libndi_newtek_outdev_extralibs="-lndi"
3102 dshow_indev_deps="IBaseFilter"
3103 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3104 fbdev_indev_deps="linux_fb_h"
3105 fbdev_outdev_deps="linux_fb_h"
3106 gdigrab_indev_deps="CreateDIBSection"
3107 gdigrab_indev_extralibs="-lgdi32"
3108 gdigrab_indev_select="bmp_decoder"
3109 iec61883_indev_deps="libiec61883"
3110 jack_indev_deps="libjack"
3111 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3112 kmsgrab_indev_deps="libdrm"
3113 lavfi_indev_deps="avfilter"
3114 libcdio_indev_deps="libcdio"
3115 libdc1394_indev_deps="libdc1394"
3116 openal_indev_deps="openal"
3117 opengl_outdev_deps="opengl"
3118 oss_indev_deps_any="sys_soundcard_h"
3119 oss_outdev_deps_any="sys_soundcard_h"
3120 pulse_indev_deps="libpulse"
3121 pulse_outdev_deps="libpulse"
3122 sdl2_outdev_deps="sdl2"
3123 sndio_indev_deps="sndio"
3124 sndio_outdev_deps="sndio"
3125 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3126 v4l2_indev_suggest="libv4l2"
3127 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3128 v4l2_outdev_suggest="libv4l2"
3129 vfwcap_indev_deps="vfw32 vfwcap_defines"
3130 xcbgrab_indev_deps="libxcb"
3131 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3132 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3133 xv_outdev_extralibs="-lXv -lX11 -lXext"
3134
3135 # protocols
3136 async_protocol_deps="threads"
3137 bluray_protocol_deps="libbluray"
3138 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3139 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3140 ffrtmpcrypt_protocol_select="tcp_protocol"
3141 ffrtmphttp_protocol_conflict="librtmp_protocol"
3142 ffrtmphttp_protocol_select="http_protocol"
3143 ftp_protocol_select="tcp_protocol"
3144 gopher_protocol_select="network"
3145 http_protocol_select="tcp_protocol"
3146 http_protocol_suggest="zlib"
3147 httpproxy_protocol_select="tcp_protocol"
3148 httpproxy_protocol_suggest="zlib"
3149 https_protocol_select="tls_protocol"
3150 https_protocol_suggest="zlib"
3151 icecast_protocol_select="http_protocol"
3152 librtmp_protocol_deps="librtmp"
3153 librtmpe_protocol_deps="librtmp"
3154 librtmps_protocol_deps="librtmp"
3155 librtmpt_protocol_deps="librtmp"
3156 librtmpte_protocol_deps="librtmp"
3157 libsmbclient_protocol_deps="libsmbclient gplv3"
3158 libssh_protocol_deps="libssh"
3159 libtls_conflict="openssl gnutls"
3160 mmsh_protocol_select="http_protocol"
3161 mmst_protocol_select="network"
3162 rtmp_protocol_conflict="librtmp_protocol"
3163 rtmp_protocol_select="tcp_protocol"
3164 rtmp_protocol_suggest="zlib"
3165 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3166 rtmpe_protocol_suggest="zlib"
3167 rtmps_protocol_conflict="librtmp_protocol"
3168 rtmps_protocol_select="tls_protocol"
3169 rtmps_protocol_suggest="zlib"
3170 rtmpt_protocol_select="ffrtmphttp_protocol"
3171 rtmpt_protocol_suggest="zlib"
3172 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3173 rtmpte_protocol_suggest="zlib"
3174 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3175 rtmpts_protocol_suggest="zlib"
3176 rtp_protocol_select="udp_protocol"
3177 schannel_conflict="openssl gnutls libtls"
3178 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3179 sctp_protocol_select="network"
3180 securetransport_conflict="openssl gnutls libtls"
3181 srtp_protocol_select="rtp_protocol srtp"
3182 tcp_protocol_select="network"
3183 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3184 tls_protocol_select="tcp_protocol"
3185 udp_protocol_select="network"
3186 udplite_protocol_select="network"
3187 unix_protocol_deps="sys_un_h"
3188 unix_protocol_select="network"
3189
3190 # filters
3191 afftfilt_filter_deps="avcodec"
3192 afftfilt_filter_select="fft"
3193 afir_filter_deps="avcodec"
3194 afir_filter_select="fft"
3195 amovie_filter_deps="avcodec avformat"
3196 aresample_filter_deps="swresample"
3197 ass_filter_deps="libass"
3198 atempo_filter_deps="avcodec"
3199 atempo_filter_select="rdft"
3200 azmq_filter_deps="libzmq"
3201 blackframe_filter_deps="gpl"
3202 boxblur_filter_deps="gpl"
3203 bs2b_filter_deps="libbs2b"
3204 colormatrix_filter_deps="gpl"
3205 convolve_filter_deps="avcodec"
3206 convolve_filter_select="fft"
3207 coreimage_filter_deps="coreimage appkit"
3208 coreimage_filter_extralibs="-framework OpenGL"
3209 coreimagesrc_filter_deps="coreimage appkit"
3210 coreimagesrc_filter_extralibs="-framework OpenGL"
3211 cover_rect_filter_deps="avcodec avformat gpl"
3212 cropdetect_filter_deps="gpl"
3213 deconvolve_filter_deps="avcodec"
3214 deconvolve_filter_select="fft"
3215 deinterlace_qsv_filter_deps="libmfx"
3216 deinterlace_vaapi_filter_deps="vaapi"
3217 delogo_filter_deps="gpl"
3218 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3219 deshake_filter_select="pixelutils"
3220 drawtext_filter_deps="libfreetype"
3221 drawtext_filter_suggest="libfontconfig libfribidi"
3222 elbg_filter_deps="avcodec"
3223 eq_filter_deps="gpl"
3224 fftfilt_filter_deps="avcodec"
3225 fftfilt_filter_select="rdft"
3226 find_rect_filter_deps="avcodec avformat gpl"
3227 firequalizer_filter_deps="avcodec"
3228 firequalizer_filter_select="rdft"
3229 flite_filter_deps="libflite"
3230 framerate_filter_select="pixelutils"
3231 frei0r_filter_deps="frei0r libdl"
3232 frei0r_src_filter_deps="frei0r libdl"
3233 fspp_filter_deps="gpl"
3234 geq_filter_deps="gpl"
3235 histeq_filter_deps="gpl"
3236 hqdn3d_filter_deps="gpl"
3237 interlace_filter_deps="gpl"
3238 kerndeint_filter_deps="gpl"
3239 ladspa_filter_deps="ladspa libdl"
3240 lv2_filter_deps="lv2"
3241 mcdeint_filter_deps="avcodec gpl"
3242 movie_filter_deps="avcodec avformat"
3243 mpdecimate_filter_deps="gpl"
3244 mpdecimate_filter_select="pixelutils"
3245 mptestsrc_filter_deps="gpl"
3246 negate_filter_deps="lut_filter"
3247 nnedi_filter_deps="gpl"
3248 ocr_filter_deps="libtesseract"
3249 ocv_filter_deps="libopencv"
3250 openclsrc_filter_deps="opencl"
3251 overlay_opencl_filter_deps="opencl"
3252 overlay_qsv_filter_deps="libmfx"
3253 overlay_qsv_filter_select="qsvvpp"
3254 owdenoise_filter_deps="gpl"
3255 pan_filter_deps="swresample"
3256 perspective_filter_deps="gpl"
3257 phase_filter_deps="gpl"
3258 pp7_filter_deps="gpl"
3259 pp_filter_deps="gpl postproc"
3260 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3261 program_opencl_filter_deps="opencl"
3262 pullup_filter_deps="gpl"
3263 removelogo_filter_deps="avcodec avformat swscale"
3264 repeatfields_filter_deps="gpl"
3265 resample_filter_deps="avresample"
3266 rubberband_filter_deps="librubberband"
3267 sab_filter_deps="gpl swscale"
3268 scale2ref_filter_deps="swscale"
3269 scale_filter_deps="swscale"
3270 scale_qsv_filter_deps="libmfx"
3271 select_filter_select="pixelutils"
3272 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3273 showcqt_filter_deps="avcodec avformat swscale"
3274 showcqt_filter_suggest="libfontconfig libfreetype"
3275 showcqt_filter_select="fft"
3276 showfreqs_filter_deps="avcodec"
3277 showfreqs_filter_select="fft"
3278 showspectrum_filter_deps="avcodec"
3279 showspectrum_filter_select="fft"
3280 showspectrumpic_filter_deps="avcodec"
3281 showspectrumpic_filter_select="fft"
3282 signature_filter_deps="gpl avcodec avformat"
3283 smartblur_filter_deps="gpl swscale"
3284 sofalizer_filter_deps="libmysofa avcodec"
3285 sofalizer_filter_select="fft"
3286 spectrumsynth_filter_deps="avcodec"
3287 spectrumsynth_filter_select="fft"
3288 spp_filter_deps="gpl avcodec"
3289 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3290 stereo3d_filter_deps="gpl"
3291 subtitles_filter_deps="avformat avcodec libass"
3292 super2xsai_filter_deps="gpl"
3293 pixfmts_super2xsai_test_deps="super2xsai_filter"
3294 tinterlace_filter_deps="gpl"
3295 tinterlace_merge_test_deps="tinterlace_filter"
3296 tinterlace_pad_test_deps="tinterlace_filter"
3297 tonemap_filter_deps="const_nan"
3298 unsharp_opencl_filter_deps="opencl"
3299 uspp_filter_deps="gpl avcodec"
3300 vaguedenoiser_filter_deps="gpl"
3301 vidstabdetect_filter_deps="libvidstab"
3302 vidstabtransform_filter_deps="libvidstab"
3303 libvmaf_filter_deps="libvmaf pthreads"
3304 zmq_filter_deps="libzmq"
3305 zoompan_filter_deps="swscale"
3306 zscale_filter_deps="libzimg const_nan"
3307 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3308 vpp_qsv_filter_deps="libmfx"
3309 vpp_qsv_filter_select="qsvvpp"
3310
3311 # examples
3312 avio_dir_cmd_deps="avformat avutil"
3313 avio_reading_deps="avformat avcodec avutil"
3314 decode_audio_example_deps="avcodec avutil"
3315 decode_video_example_deps="avcodec avutil"
3316 demuxing_decoding_example_deps="avcodec avformat avutil"
3317 encode_audio_example_deps="avcodec avutil"
3318 encode_video_example_deps="avcodec avutil"
3319 extract_mvs_example_deps="avcodec avformat avutil"
3320 filter_audio_example_deps="avfilter avutil"
3321 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3322 filtering_video_example_deps="avfilter avcodec avformat avutil"
3323 http_multiclient_example_deps="avformat avutil fork"
3324 hw_decode_example_deps="avcodec avformat avutil"
3325 metadata_example_deps="avformat avutil"
3326 muxing_example_deps="avcodec avformat avutil swscale"
3327 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3328 remuxing_example_deps="avcodec avformat avutil"
3329 resampling_audio_example_deps="avutil swresample"
3330 scaling_video_example_deps="avutil swscale"
3331 transcode_aac_example_deps="avcodec avformat swresample"
3332 transcoding_example_deps="avfilter avcodec avformat avutil"
3333 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3334 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3335
3336 # EXTRALIBS_LIST
3337 cpu_init_extralibs="pthreads_extralibs"
3338 cws2fws_extralibs="zlib_extralibs"
3339
3340 # libraries, in linking order
3341 avcodec_deps="avutil"
3342 avcodec_suggest="libm"
3343 avcodec_select="null_bsf"
3344 avdevice_deps="avformat avcodec avutil"
3345 avdevice_suggest="libm"
3346 avfilter_deps="avutil"
3347 avfilter_suggest="libm"
3348 avformat_deps="avcodec avutil"
3349 avformat_suggest="libm network zlib"
3350 avresample_deps="avutil"
3351 avresample_suggest="libm"
3352 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3353 postproc_deps="avutil gpl"
3354 postproc_suggest="libm"
3355 swresample_deps="avutil"
3356 swresample_suggest="libm libsoxr"
3357 swscale_deps="avutil"
3358 swscale_suggest="libm"
3359
3360 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3361 avfilter_extralibs="pthreads_extralibs"
3362 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3363
3364 # programs
3365 ffmpeg_deps="avcodec avfilter avformat swresample"
3366 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3367                null_filter
3368                trim_filter"
3369 ffmpeg_suggest="ole32 psapi shell32"
3370 ffplay_deps="avcodec avformat swscale swresample sdl2"
3371 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3372 ffplay_suggest="shell32"
3373 ffprobe_deps="avcodec avformat"
3374 ffprobe_suggest="shell32"
3375
3376 # documentation
3377 podpages_deps="perl"
3378 manpages_deps="perl pod2man"
3379 htmlpages_deps="perl"
3380 htmlpages_deps_any="makeinfo_html texi2html"
3381 txtpages_deps="perl makeinfo"
3382 doc_deps_any="manpages htmlpages podpages txtpages"
3383
3384 # default parameters
3385
3386 logfile="ffbuild/config.log"
3387
3388 # installation paths
3389 prefix_default="/usr/local"
3390 bindir_default='${prefix}/bin'
3391 datadir_default='${prefix}/share/ffmpeg'
3392 docdir_default='${prefix}/share/doc/ffmpeg'
3393 incdir_default='${prefix}/include'
3394 libdir_default='${prefix}/lib'
3395 mandir_default='${prefix}/share/man'
3396
3397 # toolchain
3398 ar_default="ar"
3399 cc_default="gcc"
3400 cxx_default="g++"
3401 host_cc_default="gcc"
3402 doxygen_default="doxygen"
3403 install="install"
3404 ln_s_default="ln -s -f"
3405 nm_default="nm -g"
3406 pkg_config_default=pkg-config
3407 ranlib_default="ranlib"
3408 strip_default="strip"
3409 version_script='--version-script'
3410 objformat="elf32"
3411 x86asmexe_default="nasm"
3412 windres_default="windres"
3413 nvcc_default="nvcc"
3414 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3415 striptype="direct"
3416
3417 # OS
3418 target_os_default=$(tolower $(uname -s))
3419 host_os=$target_os_default
3420
3421 # machine
3422 if test "$target_os_default" = aix; then
3423     arch_default=$(uname -p)
3424     strip_default="strip -X32_64"
3425 else
3426     arch_default=$(uname -m)
3427 fi
3428 cpu="generic"
3429 intrinsics="none"
3430
3431 # configurable options
3432 enable $PROGRAM_LIST
3433 enable $DOCUMENT_LIST
3434 enable $EXAMPLE_LIST
3435 enable $(filter_out avresample $LIBRARY_LIST)
3436 enable stripping
3437
3438 enable asm
3439 enable debug
3440 enable doc
3441 enable faan faandct faanidct
3442 enable optimizations
3443 enable runtime_cpudetect
3444 enable safe_bitstream_reader
3445 enable static
3446 enable swscale_alpha
3447 enable valgrind_backtrace
3448
3449 sws_max_filter_size_default=256
3450 set_default sws_max_filter_size
3451
3452 # internal components are enabled by default
3453 enable $EXTRALIBS_LIST
3454
3455 # Avoid external, non-system, libraries getting enabled by dependency resolution
3456 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3457
3458 # build settings
3459 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3460 LIBPREF="lib"
3461 LIBSUF=".a"
3462 FULLNAME='$(NAME)$(BUILDSUF)'
3463 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3464 SLIBPREF="lib"
3465 SLIBSUF=".so"
3466 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3467 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3468 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3469 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3470 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3471 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3472 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3473
3474 asflags_filter=echo
3475 cflags_filter=echo
3476 ldflags_filter=echo
3477
3478 AS_C='-c'
3479 AS_O='-o $@'
3480 CC_C='-c'
3481 CC_E='-E -o $@'
3482 CC_O='-o $@'
3483 CXX_C='-c'
3484 CXX_O='-o $@'
3485 OBJCC_C='-c'
3486 OBJCC_E='-E -o $@'
3487 OBJCC_O='-o $@'
3488 X86ASM_O='-o $@'
3489 LD_O='-o $@'
3490 LD_LIB='-l%'
3491 LD_PATH='-L'
3492 HOSTCC_C='-c'
3493 HOSTCC_E='-E -o $@'
3494 HOSTCC_O='-o $@'
3495 HOSTLD_O='-o $@'
3496 NVCC_C='-c'
3497 NVCC_O='-o $@'
3498
3499 host_extralibs='-lm'
3500 host_cflags_filter=echo
3501 host_ldflags_filter=echo
3502
3503 target_path='$(CURDIR)'
3504
3505 # since the object filename is not given with the -MM flag, the compiler
3506 # is only able to print the basename, and we must add the path ourselves
3507 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3508 DEPFLAGS='-MM'
3509
3510 mkdir -p ffbuild
3511
3512 # find source path
3513 if test -f configure; then
3514     source_path=.
3515 else
3516     source_path=$(cd $(dirname "$0"); pwd)
3517     case "$source_path" in
3518         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3519     esac
3520     test -e "$source_path/config.h" &&
3521         die "Out of tree builds are impossible with config.h in source dir."
3522 fi
3523
3524 for v in "$@"; do
3525     r=${v#*=}
3526     l=${v%"$r"}
3527     r=$(sh_quote "$r")
3528     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3529 done
3530
3531 find_things(){
3532     thing=$1
3533     pattern=$2
3534     file=$source_path/$3
3535     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3536 }
3537
3538 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3539
3540 find_things_extern(){
3541     thing=$1
3542     pattern=$2
3543     file=$source_path/$3
3544     out=${4:-$thing}
3545     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3546 }
3547
3548 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3549 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3550 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3551 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3552 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3553 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3554 CODEC_LIST="
3555     $ENCODER_LIST
3556     $DECODER_LIST
3557 "
3558 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3559 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3560 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3561 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3562
3563 AVCODEC_COMPONENTS_LIST="
3564     $BSF_LIST
3565     $DECODER_LIST
3566     $ENCODER_LIST
3567     $HWACCEL_LIST
3568     $PARSER_LIST
3569 "
3570
3571 AVDEVICE_COMPONENTS_LIST="
3572     $INDEV_LIST
3573     $OUTDEV_LIST
3574 "
3575
3576 AVFILTER_COMPONENTS_LIST="
3577     $FILTER_LIST
3578 "
3579
3580 AVFORMAT_COMPONENTS_LIST="
3581     $DEMUXER_LIST
3582     $MUXER_LIST
3583     $PROTOCOL_LIST
3584 "
3585
3586 ALL_COMPONENTS="
3587     $AVCODEC_COMPONENTS_LIST
3588     $AVDEVICE_COMPONENTS_LIST
3589     $AVFILTER_COMPONENTS_LIST
3590     $AVFORMAT_COMPONENTS_LIST
3591 "
3592
3593 for n in $COMPONENT_LIST; do
3594     v=$(toupper ${n%s})_LIST
3595     eval enable \$$v
3596     eval ${n}_if_any="\$$v"
3597 done
3598
3599 enable $ARCH_EXT_LIST
3600
3601 die_unknown(){
3602     echo "Unknown option \"$1\"."
3603     echo "See $0 --help for available options."
3604     exit 1
3605 }
3606
3607 print_in_columns() {
3608     cols=$(expr $ncols / 24)
3609     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3610 }
3611
3612 show_list() {
3613     suffix=_$1
3614     shift
3615     echo $* | sed s/$suffix//g | print_in_columns
3616     exit 0
3617 }
3618
3619 rand_list(){
3620     IFS=', '
3621     set -- $*
3622     unset IFS
3623     for thing; do
3624         comp=${thing%:*}
3625         prob=${thing#$comp}
3626         prob=${prob#:}
3627         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3628         echo "prob ${prob:-0.5}"
3629         printf '%s\n' $comp
3630     done
3631 }
3632
3633 do_random(){
3634     action=$1
3635     shift
3636     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3637     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3638 }
3639
3640 for opt do
3641     optval="${opt#*=}"
3642     case "$opt" in
3643         --extra-ldflags=*)
3644             add_ldflags $optval
3645         ;;
3646         --extra-ldexeflags=*)
3647             add_ldexeflags $optval
3648         ;;
3649         --extra-ldsoflags=*)
3650             add_ldsoflags $optval
3651         ;;
3652         --extra-ldlibflags=*)
3653             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3654                  "removed in the future. Use --extra-ldsoflags instead."
3655             add_ldsoflags $optval
3656         ;;
3657         --extra-libs=*)
3658             add_extralibs $optval
3659         ;;
3660         --disable-devices)
3661             disable $INDEV_LIST $OUTDEV_LIST
3662         ;;
3663         --enable-debug=*)
3664             debuglevel="$optval"
3665         ;;
3666         --disable-programs)
3667             disable $PROGRAM_LIST
3668         ;;
3669         --disable-everything)
3670             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3671         ;;
3672         --disable-all)
3673             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3674             disable $LIBRARY_LIST $PROGRAM_LIST doc
3675             enable avutil
3676         ;;
3677         --enable-random|--disable-random)
3678             action=${opt%%-random}
3679             do_random ${action#--} $COMPONENT_LIST
3680         ;;
3681         --enable-random=*|--disable-random=*)
3682             action=${opt%%-random=*}
3683             do_random ${action#--} $optval
3684         ;;
3685         --enable-sdl)
3686             enable sdl2
3687         ;;
3688         --enable-*=*|--disable-*=*)
3689             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3690             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3691             eval list=\$$(toupper $thing)_LIST
3692             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3693             list=$(filter "$name" $list)
3694             [ "$list" = "" ] && warn "Option $opt did not match anything"
3695             $action $list
3696         ;;
3697         --enable-yasm|--disable-yasm)
3698             warn "The ${opt} option is only provided for compatibility and will be\n"\
3699                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3700             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3701         ;;
3702         --yasmexe=*)
3703             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3704                  "removed in the future. Use --x86asmexe instead."
3705             x86asmexe="$optval"
3706         ;;
3707         --enable-?*|--disable-?*)
3708             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3709             if is_in $option $COMPONENT_LIST; then
3710                 test $action = disable && action=unset
3711                 eval $action \$$(toupper ${option%s})_LIST
3712             elif is_in $option $CMDLINE_SELECT; then
3713                 $action $option
3714             else
3715                 die_unknown $opt
3716             fi
3717         ;;
3718         --list-*)
3719             NAME="${opt#--list-}"
3720             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3721             NAME=${NAME%s}
3722             eval show_list $NAME \$$(toupper $NAME)_LIST
3723         ;;
3724         --help|-h) show_help
3725         ;;
3726         --quiet|-q) quiet=yes
3727         ;;
3728         --fatal-warnings) enable fatal_warnings
3729         ;;
3730         --libfuzzer=*)
3731             libfuzzer_path="$optval"
3732         ;;
3733         *)
3734             optname="${opt%%=*}"
3735             optname="${optname#--}"
3736             optname=$(echo "$optname" | sed 's/-/_/g')
3737             if is_in $optname $CMDLINE_SET; then
3738                 eval $optname='$optval'
3739             elif is_in $optname $CMDLINE_APPEND; then
3740                 append $optname "$optval"
3741             else
3742                 die_unknown $opt
3743             fi
3744         ;;
3745     esac
3746 done
3747
3748 for e in $env; do
3749     eval "export $e"
3750 done
3751
3752 if disabled autodetect; then
3753
3754     # Unless iconv is explicitely disabled by the user, we still want to probe
3755     # for the iconv from the libc.
3756     disabled iconv || enable libc_iconv
3757
3758     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3759     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3760 fi
3761 # Mark specifically enabled, but normally autodetected libraries as requested.
3762 for lib in $AUTODETECT_LIBS; do
3763     enabled $lib && request $lib
3764 done
3765 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3766 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3767 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3768
3769 disabled logging && logfile=/dev/null
3770
3771 # command line configuration sanity checks
3772
3773 # we need to build at least one lib type
3774 if ! enabled_any static shared; then
3775     cat <<EOF
3776 At least one library type must be built.
3777 Specify --enable-static to build the static libraries or --enable-shared to
3778 build the shared libraries as well. To only build the shared libraries specify
3779 --disable-static in addition to --enable-shared.
3780 EOF
3781     exit 1
3782 fi
3783
3784 die_license_disabled() {
3785     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3786 }
3787
3788 die_license_disabled_gpl() {
3789     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3790 }
3791
3792 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3793 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3794
3795 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3796 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3797
3798 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3799
3800 if enabled nonfree; then
3801     license="nonfree and unredistributable"
3802 elif enabled gplv3; then
3803     license="GPL version 3 or later"
3804 elif enabled lgplv3; then
3805     license="LGPL version 3 or later"
3806 elif enabled gpl; then
3807     license="GPL version 2 or later"
3808 else
3809     license="LGPL version 2.1 or later"
3810 fi
3811
3812 enabled_all gnutls openssl &&
3813     die "GnuTLS and OpenSSL must not be enabled at the same time."
3814
3815 # Disable all the library-specific components if the library itself
3816 # is disabled, see AVCODEC_LIST and following _LIST variables.
3817
3818 disable_components(){
3819     disabled ${1} && disable $(
3820         eval components="\$$(toupper ${1})_COMPONENTS"
3821         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3822     )
3823 }
3824
3825 map 'disable_components $v' $LIBRARY_LIST
3826
3827 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3828 set >> $logfile
3829
3830 test -n "$valgrind" && toolchain="valgrind-memcheck"
3831
3832 enabled ossfuzz && {
3833     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3834     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3835 }
3836
3837 case "$toolchain" in
3838     *-asan)
3839         cc_default="${toolchain%-asan}"
3840         add_cflags  -fsanitize=address
3841         add_ldflags -fsanitize=address
3842     ;;
3843     *-msan)
3844         cc_default="${toolchain%-msan}"
3845         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3846         add_ldflags -fsanitize=memory
3847     ;;
3848     *-tsan)
3849         cc_default="${toolchain%-tsan}"
3850         add_cflags  -fsanitize=thread -fPIE
3851         add_ldflags -fsanitize=thread -pie
3852         case "$toolchain" in
3853             gcc-tsan)
3854                 add_cflags  -fPIC
3855                 add_ldflags -fPIC
3856                 ;;
3857         esac
3858     ;;
3859     *-usan)
3860         cc_default="${toolchain%-usan}"
3861         add_cflags  -fsanitize=undefined
3862         add_ldflags -fsanitize=undefined
3863     ;;
3864     valgrind-*)
3865         target_exec_default="valgrind"
3866         case "$toolchain" in
3867             valgrind-massif)
3868                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3869                 ;;
3870             valgrind-memcheck)
3871                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3872                 ;;
3873         esac
3874     ;;
3875     msvc)
3876         # Check whether the current MSVC version needs the C99 converter.
3877         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3878         # support enough of C99 to build ffmpeg. Default to the new
3879         # behaviour if the regexp was unable to match anything, since this
3880         # successfully parses the version number of existing supported
3881         # versions that require the converter (MSVC 2010 and 2012).
3882         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3883         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3884             cc_default="cl"
3885             cxx_default="cl"
3886         else
3887             cc_default="c99wrap cl"
3888             cxx_default="c99wrap cl"
3889         fi
3890         ld_default="$source_path/compat/windows/mslink"
3891         nm_default="dumpbin -symbols"
3892         ar_default="lib"
3893         case "$arch" in
3894         aarch64|arm64)
3895             as_default="armasm64"
3896             ;;
3897         arm*)
3898             as_default="armasm"
3899             ;;
3900         esac
3901         target_os_default="win32"
3902         # Use a relative path for TMPDIR. This makes sure all the
3903         # ffconf temp files are written with a relative path, avoiding
3904         # issues with msys/win32 path conversion for MSVC parameters
3905         # such as -Fo<file> or -out:<file>.
3906         TMPDIR=.
3907     ;;
3908     icl)
3909         cc_default="icl"
3910         ld_default="xilink"
3911         nm_default="dumpbin -symbols"
3912         ar_default="xilib"
3913         target_os_default="win32"
3914         TMPDIR=.
3915     ;;
3916     gcov)
3917         add_cflags  -fprofile-arcs -ftest-coverage
3918         add_ldflags -fprofile-arcs -ftest-coverage
3919     ;;
3920     llvm-cov)
3921         add_cflags -fprofile-arcs -ftest-coverage
3922         add_ldflags --coverage
3923     ;;
3924     hardened)
3925         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3926         add_cflags   -fno-strict-overflow -fstack-protector-all
3927         add_ldflags  -Wl,-z,relro -Wl,-z,now
3928         add_cflags   -fPIE
3929         add_ldexeflags -fPIE -pie
3930     ;;
3931     ?*)
3932         die "Unknown toolchain $toolchain"
3933     ;;
3934 esac
3935
3936 if test -n "$cross_prefix"; then
3937     test -n "$arch" && test -n "$target_os" ||
3938         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3939     enable cross_compile
3940 fi
3941
3942 ar_default="${cross_prefix}${ar_default}"
3943 cc_default="${cross_prefix}${cc_default}"
3944 cxx_default="${cross_prefix}${cxx_default}"
3945 nm_default="${cross_prefix}${nm_default}"
3946 pkg_config_default="${cross_prefix}${pkg_config_default}"
3947 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3948     ranlib_default="${cross_prefix}${ranlib_default} -D"
3949 else
3950     ranlib_default="${cross_prefix}${ranlib_default}"
3951 fi
3952 strip_default="${cross_prefix}${strip_default}"
3953 windres_default="${cross_prefix}${windres_default}"
3954
3955 sysinclude_default="${sysroot}/usr/include"
3956
3957 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3958     target_exec target_os x86asmexe nvcc
3959 enabled cross_compile || host_cc_default=$cc
3960 set_default host_cc
3961
3962 pkg_config_fail_message=""
3963 if ! $pkg_config --version >/dev/null 2>&1; then
3964     warn "$pkg_config not found, library detection may fail."
3965     pkg_config=false
3966 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3967     pkg_config_fail_message="
3968 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3969 fi
3970
3971 if test $doxygen != $doxygen_default && \
3972   ! $doxygen --version >/dev/null 2>&1; then
3973     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3974 fi
3975
3976 exesuf() {
3977     case $1 in
3978         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3979     esac
3980 }
3981
3982 EXESUF=$(exesuf $target_os)
3983 HOSTEXESUF=$(exesuf $host_os)
3984
3985 # set temporary file name
3986 : ${TMPDIR:=$TEMPDIR}
3987 : ${TMPDIR:=$TMP}
3988 : ${TMPDIR:=/tmp}
3989
3990 if [ -n "$tempprefix" ] ; then
3991     mktemp(){
3992         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3993         echo "$tmpname"
3994         mkdir "$tmpname"
3995     }
3996 elif ! check_cmd mktemp -u XXXXXX; then
3997     # simple replacement for missing mktemp
3998     # NOT SAFE FOR GENERAL USE
3999     mktemp(){
4000         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4001         echo "$tmpname"
4002         mkdir "$tmpname"
4003     }
4004 fi
4005
4006 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4007     die "Unable to create temporary directory in $TMPDIR."
4008
4009 tmpfile(){
4010     tmp="${FFTMPDIR}/test"$2
4011     (set -C; exec > $tmp) 2> /dev/null ||
4012         die "Unable to create temporary file in $FFTMPDIR."
4013     eval $1=$tmp
4014 }
4015
4016 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4017 trap 'exit 2' INT
4018
4019 tmpfile TMPASM .asm
4020 tmpfile TMPC   .c
4021 tmpfile TMPCPP .cpp
4022 tmpfile TMPE   $EXESUF
4023 tmpfile TMPH   .h
4024 tmpfile TMPM   .m
4025 tmpfile TMPO   .o
4026 tmpfile TMPS   .S
4027 tmpfile TMPSH  .sh
4028 tmpfile TMPV   .ver
4029
4030 unset -f mktemp
4031
4032 chmod +x $TMPE
4033
4034 # make sure we can execute files in $TMPDIR
4035 cat > $TMPSH 2>> $logfile <<EOF
4036 #! /bin/sh
4037 EOF
4038 chmod +x $TMPSH >> $logfile 2>&1
4039 if ! $TMPSH >> $logfile 2>&1; then
4040     cat <<EOF
4041 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4042 variable to another directory and make sure that it is not mounted noexec.
4043 EOF
4044     die "Sanity test failed."
4045 fi
4046
4047 armasm_flags(){
4048     for flag; do
4049         case $flag in
4050             # Filter out MSVC cl.exe options from cflags that shouldn't
4051             # be passed to gas-preprocessor
4052             -M[TD]*)                                            ;;
4053             *)                  echo $flag                      ;;
4054         esac
4055    done
4056 }
4057
4058 cparser_flags(){
4059     for flag; do
4060         case $flag in
4061             -Wno-switch)             echo -Wno-switch-enum ;;
4062             -Wno-format-zero-length) ;;
4063             -Wdisabled-optimization) ;;
4064             -Wno-pointer-sign)       echo -Wno-other ;;
4065             *)                       echo $flag ;;
4066         esac
4067     done
4068 }
4069
4070 msvc_common_flags(){
4071     for flag; do
4072         case $flag in
4073             # In addition to specifying certain flags under the compiler
4074             # specific filters, they must be specified here as well or else the
4075             # generic catch all at the bottom will print the original flag.
4076             -Wall)                ;;
4077             -Wextra)              ;;
4078             -std=c99)             ;;
4079             # Common flags
4080             -fomit-frame-pointer) ;;
4081             -g)                   echo -Z7 ;;
4082             -fno-math-errno)      ;;
4083             -fno-common)          ;;
4084             -fno-signed-zeros)    ;;
4085             -fPIC)                ;;
4086             -mthumb)              ;;
4087             -march=*)             ;;
4088             -lz)                  echo zlib.lib ;;
4089             -lx264)               echo libx264.lib ;;
4090             -lstdc++)             ;;
4091             -l*)                  echo ${flag#-l}.lib ;;
4092             -LARGEADDRESSAWARE)   echo $flag ;;
4093             -L*)                  echo -libpath:${flag#-L} ;;
4094             *)                    echo $flag ;;
4095         esac
4096     done
4097 }
4098
4099 msvc_flags(){
4100     msvc_common_flags "$@"
4101     for flag; do
4102         case $flag in
4103             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4104                                        -wd4554 ;;
4105             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4106                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4107                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4108                                        -wd4307 \
4109                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4110         esac
4111     done
4112 }
4113
4114 icl_flags(){
4115     msvc_common_flags "$@"
4116     for flag; do
4117         case $flag in
4118             # Despite what Intel's documentation says -Wall, which is supported
4119             # on Windows, does enable remarks so disable them here.
4120             -Wall)                echo $flag -Qdiag-disable:remark ;;
4121             -std=c99)             echo -Qstd=c99 ;;
4122             -flto)                echo -ipo ;;
4123         esac
4124     done
4125 }
4126
4127 icc_flags(){
4128     for flag; do
4129         case $flag in
4130             -flto)                echo -ipo ;;
4131             *)                    echo $flag ;;
4132         esac
4133     done
4134 }
4135
4136 suncc_flags(){
4137     for flag; do
4138         case $flag in
4139             -march=*|-mcpu=*)
4140                 case "${flag#*=}" in
4141                     native)                   echo -xtarget=native       ;;
4142                     v9|niagara)               echo -xarch=sparc          ;;
4143                     ultrasparc)               echo -xarch=sparcvis       ;;
4144                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4145                     i586|pentium)             echo -xchip=pentium        ;;
4146                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4147                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4148                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4149                     pentium4*)          echo -xtarget=pentium4           ;;
4150                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4151                     *-sse3)             echo -xarch=sse3                 ;;
4152                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4153                     bonnell)                   echo -xarch=ssse3         ;;
4154                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4155                     westmere)                  echo -xtarget=westmere    ;;
4156                     silvermont)                echo -xarch=sse4_2        ;;
4157                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4158                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4159                                                echo -xarch=avx           ;;
4160                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4161                     btver1)                    echo -xarch=amdsse4a      ;;
4162                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4163                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4164                     k8|opteron|athlon64|athlon-fx)
4165                                                echo -xarch=sse2a         ;;
4166                     athlon*)                   echo -xarch=pentium_proa  ;;
4167                 esac
4168                 ;;
4169             -std=c99)             echo -xc99              ;;
4170             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4171             -fPIC)                echo -KPIC -xcode=pic32 ;;
4172             -W*,*)                echo $flag              ;;
4173             -f*-*|-W*|-mimpure-text)                      ;;
4174             -shared)              echo -G                 ;;
4175             *)                    echo $flag              ;;
4176         esac
4177     done
4178 }
4179
4180 probe_cc(){
4181     pfx=$1
4182     _cc=$2
4183     first=$3
4184
4185     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4186     unset _ld_o _ldflags _ld_lib _ld_path
4187     unset _depflags _DEPCMD _DEPFLAGS
4188     _flags_filter=echo
4189
4190     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4191         true # no-op to avoid reading stdin in following checks
4192     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4193         _type=llvm_gcc
4194         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4195         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4196         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4197         _cflags_speed='-O3'
4198         _cflags_size='-Os'
4199     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4200         _type=gcc
4201         gcc_version=$($_cc --version | head -n1)
4202         gcc_basever=$($_cc -dumpversion)
4203         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4204         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4205         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4206         case $gcc_basever in
4207             2) ;;
4208             2.*) ;;
4209             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4210         esac
4211         if [ "$first" = true ]; then
4212             case $gcc_basever in
4213                 4.2*)
4214                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4215             esac
4216         fi
4217         _cflags_speed='-O3'
4218         _cflags_size='-Os'
4219     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4220         _type=icc
4221         _ident=$($_cc --version | head -n1)
4222         _depflags='-MMD'
4223         _cflags_speed='-O3'
4224         _cflags_size='-Os'
4225         _cflags_noopt='-O1'
4226         _flags_filter=icc_flags
4227     elif $_cc -v 2>&1 | grep -q xlc; then
4228         _type=xlc
4229         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4230         _cflags_speed='-O5'
4231         _cflags_size='-O5 -qcompact'
4232     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4233         test -d "$sysroot" || die "No valid sysroot specified."
4234         _type=armcc
4235         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4236         armcc_conf="$PWD/armcc.conf"
4237         $_cc --arm_linux_configure                 \
4238              --arm_linux_config_file="$armcc_conf" \
4239              --configure_sysroot="$sysroot"        \
4240              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4241              die "Error creating armcc configuration file."
4242         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4243         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4244         as_default="${cross_prefix}gcc"
4245         _depflags='-MMD'
4246         _cflags_speed='-O3'
4247         _cflags_size='-Os'
4248     elif $_cc -v 2>&1 | grep -q clang; then
4249         _type=clang
4250         _ident=$($_cc --version 2>/dev/null | head -n1)
4251         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4252         _cflags_speed='-O3'
4253         _cflags_size='-Oz'
4254     elif $_cc -V 2>&1 | grep -q Sun; then
4255         _type=suncc
4256         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4257         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4258         _DEPFLAGS='-xM1 -xc99'
4259         _ldflags='-std=c99'
4260         _cflags_speed='-O5'
4261         _cflags_size='-O5 -xspace'
4262         _flags_filter=suncc_flags
4263     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4264         _type=pathscale
4265         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4266         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4267         _cflags_speed='-O2'
4268         _cflags_size='-Os'
4269         _flags_filter='filter_out -Wdisabled-optimization'
4270     elif $_cc -v 2>&1 | grep -q Open64; then
4271         _type=open64
4272         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4273         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4274         _cflags_speed='-O2'
4275         _cflags_size='-Os'
4276         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4277     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4278         _type=armasm
4279         _ident=$($_cc | head -n1)
4280         # 4509: "This form of conditional instruction is deprecated"
4281         _flags="-nologo -ignore 4509"
4282         _flags_filter=armasm_flags
4283     elif $_cc 2>&1 | grep -q Intel; then
4284         _type=icl
4285         _ident=$($_cc 2>&1 | head -n1)
4286         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4287         # Not only is O3 broken on 13.x+ but it is slower on all previous
4288         # versions (tested) as well.
4289         _cflags_speed="-O2"
4290         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4291         if $_cc 2>&1 | grep -q Linker; then
4292             _ld_o='-out:$@'
4293         else
4294             _ld_o='-Fe$@'
4295         fi
4296         _cc_o='-Fo$@'
4297         _cc_e='-P'
4298         _flags_filter=icl_flags
4299         _ld_lib='lib%.a'
4300         _ld_path='-libpath:'
4301         # -Qdiag-error to make icl error when seeing certain unknown arguments
4302         _flags='-nologo -Qdiag-error:4044,10157'
4303         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4304         # with MSVC which enables it by default.
4305         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4306         disable stripping
4307     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4308         # lld can emulate multiple different linkers; in ms link.exe mode,
4309         # the -? parameter gives the help output which contains an identifyable
4310         # string, while it gives an error in other modes.
4311         _type=lld-link
4312         # The link.exe mode doesn't have a switch for getting the version,
4313         # but we can force it back to gnu mode and get the version from there.
4314         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4315         _ld_o='-out:$@'
4316         _flags_filter=msvc_flags
4317         _ld_lib='lib%.a'
4318         _ld_path='-libpath:'
4319     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4320         _type=msvc
4321         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4322         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4323         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4324         _cflags_speed="-O2"
4325         _cflags_size="-O1"
4326         _cflags_noopt="-O1"
4327         if $_cc -nologo- 2>&1 | grep -q Linker; then
4328             _ld_o='-out:$@'
4329         else
4330             _ld_o='-Fe$@'
4331         fi
4332         _cc_o='-Fo$@'
4333         _cc_e='-P -Fi$@'
4334         _flags_filter=msvc_flags
4335         _ld_lib='lib%.a'
4336         _ld_path='-libpath:'
4337         _flags='-nologo'
4338         disable stripping
4339     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4340         _type=cparser
4341         _ident=$($_cc --version | head -n1)
4342         _depflags='-MMD'
4343         _cflags_speed='-O4'
4344         _cflags_size='-O2'
4345         _flags_filter=cparser_flags
4346     fi
4347
4348     eval ${pfx}_type=\$_type
4349     eval ${pfx}_ident=\$_ident
4350 }
4351
4352 set_ccvars(){
4353     eval ${1}_C=\${_cc_c-\${${1}_C}}
4354     eval ${1}_E=\${_cc_e-\${${1}_E}}
4355     eval ${1}_O=\${_cc_o-\${${1}_O}}
4356
4357     if [ -n "$_depflags" ]; then
4358         eval ${1}_DEPFLAGS=\$_depflags
4359     else
4360         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4361         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4362         eval DEP${1}FLAGS=\$_flags
4363     fi
4364 }
4365
4366 probe_cc cc "$cc" "true"
4367 cflags_filter=$_flags_filter
4368 cflags_speed=$_cflags_speed
4369 cflags_size=$_cflags_size
4370 cflags_noopt=$_cflags_noopt
4371 add_cflags $_flags $_cflags
4372 cc_ldflags=$_ldflags
4373 set_ccvars CC
4374 set_ccvars CXX
4375
4376 probe_cc hostcc "$host_cc"
4377 host_cflags_filter=$_flags_filter
4378 host_cflags_speed=$_cflags_speed
4379 add_host_cflags  $_flags $_cflags
4380 set_ccvars HOSTCC
4381
4382 test -n "$cc_type" && enable $cc_type ||
4383     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4384
4385 : ${as_default:=$cc}
4386 : ${objcc_default:=$cc}
4387 : ${dep_cc_default:=$cc}
4388 : ${ld_default:=$cc}
4389 : ${host_ld_default:=$host_cc}
4390 set_default ar as objcc dep_cc ld ln_s host_ld windres
4391
4392 probe_cc as "$as"
4393 asflags_filter=$_flags_filter
4394 add_asflags $_flags $_cflags
4395 set_ccvars AS
4396
4397 probe_cc objcc "$objcc"
4398 objcflags_filter=$_flags_filter
4399 add_objcflags $_flags $_cflags
4400 set_ccvars OBJC
4401
4402 probe_cc ld "$ld"
4403 ldflags_filter=$_flags_filter
4404 add_ldflags $_flags $_ldflags
4405 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4406 LD_O=${_ld_o-$LD_O}
4407 LD_LIB=${_ld_lib-$LD_LIB}
4408 LD_PATH=${_ld_path-$LD_PATH}
4409
4410 probe_cc hostld "$host_ld"
4411 host_ldflags_filter=$_flags_filter
4412 add_host_ldflags $_flags $_ldflags
4413 HOSTLD_O=${_ld_o-$HOSTLD_O}
4414
4415 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4416     probe_cc depcc "$dep_cc"
4417     CCDEP=${_DEPCMD:-$DEPCMD}
4418     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4419     DEPCCFLAGS=$_flags
4420 fi
4421
4422 if $ar 2>&1 | grep -q Microsoft; then
4423     arflags="-nologo"
4424     ar_o='-out:$@'
4425 elif $ar 2>&1 | grep -q "\[D\] "; then
4426     arflags="rcD"
4427     ar_o='$@'
4428 else
4429     arflags="rc"
4430     ar_o='$@'
4431 fi
4432
4433 add_cflags $extra_cflags
4434 add_cxxflags $extra_cxxflags
4435 add_objcflags $extra_objcflags
4436 add_asflags $extra_cflags
4437
4438 if test -n "$sysroot"; then
4439     case "$cc_type" in
4440         gcc|llvm_gcc|clang)
4441             add_cppflags --sysroot="$sysroot"
4442             add_ldflags --sysroot="$sysroot"
4443         ;;
4444     esac
4445 fi
4446
4447 if test "$cpu" = host; then
4448     enabled cross_compile &&
4449         die "--cpu=host makes no sense when cross-compiling."
4450
4451     case "$cc_type" in
4452         gcc|llvm_gcc)
4453             check_native(){
4454                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4455                 sed -n "/cc1.*$1=/{
4456                             s/.*$1=\\([^ ]*\\).*/\\1/
4457                             p
4458                             q
4459                         }" $TMPE
4460             }
4461             cpu=$(check_native -march || check_native -mcpu)
4462         ;;
4463         clang)
4464             check_native(){
4465                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4466                 sed -n "/cc1.*-target-cpu /{
4467                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4468                             p
4469                             q
4470                         }" $TMPE
4471             }
4472             cpu=$(check_native -march)
4473         ;;
4474     esac
4475
4476     test "${cpu:-host}" = host &&
4477         die "--cpu=host not supported with compiler $cc"
4478 fi
4479
4480 # Deal with common $arch aliases
4481 case "$arch" in
4482     aarch64|arm64)
4483         arch="aarch64"
4484     ;;
4485     arm*|iPad*|iPhone*)
4486         arch="arm"
4487     ;;
4488     mips*|IP*)
4489         case "$arch" in
4490         *el)
4491             add_cppflags -EL
4492             add_ldflags -EL
4493         ;;
4494         *eb)
4495             add_cppflags -EB
4496             add_ldflags -EB
4497         ;;
4498         esac
4499         arch="mips"
4500     ;;
4501     parisc*|hppa*)
4502         arch="parisc"
4503     ;;
4504     "Power Macintosh"|ppc*|powerpc*)
4505         arch="ppc"
4506     ;;
4507     s390|s390x)
4508         arch="s390"
4509     ;;
4510     sh4|sh)
4511         arch="sh4"
4512     ;;
4513     sun4*|sparc*)
4514         arch="sparc"
4515     ;;
4516     tilegx|tile-gx)
4517         arch="tilegx"
4518     ;;
4519     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4520         arch="x86"
4521     ;;
4522 esac
4523
4524 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4525 enable $arch
4526
4527 # Add processor-specific flags
4528 if enabled aarch64; then
4529
4530     case $cpu in
4531         armv*)
4532             cpuflags="-march=$cpu"
4533         ;;
4534         *)
4535             cpuflags="-mcpu=$cpu"
4536         ;;
4537     esac
4538
4539 elif enabled alpha; then
4540
4541     cpuflags="-mcpu=$cpu"
4542
4543 elif enabled arm; then
4544
4545     check_arm_arch() {
4546         check_cpp_condition stddef.h \
4547             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4548             $cpuflags
4549     }
4550
4551     probe_arm_arch() {
4552         if   check_arm_arch 4;        then echo armv4
4553         elif check_arm_arch 4T;       then echo armv4t
4554         elif check_arm_arch 5;        then echo armv5
4555         elif check_arm_arch 5E;       then echo armv5e
4556         elif check_arm_arch 5T;       then echo armv5t
4557         elif check_arm_arch 5TE;      then echo armv5te
4558         elif check_arm_arch 5TEJ;     then echo armv5te
4559         elif check_arm_arch 6;        then echo armv6
4560         elif check_arm_arch 6J;       then echo armv6j
4561         elif check_arm_arch 6K;       then echo armv6k
4562         elif check_arm_arch 6Z;       then echo armv6z
4563         elif check_arm_arch 6KZ;      then echo armv6zk
4564         elif check_arm_arch 6ZK;      then echo armv6zk
4565         elif check_arm_arch 6T2;      then echo armv6t2
4566         elif check_arm_arch 7;        then echo armv7
4567         elif check_arm_arch 7A  7_A;  then echo armv7-a
4568         elif check_arm_arch 7S;       then echo armv7-a
4569         elif check_arm_arch 7R  7_R;  then echo armv7-r
4570         elif check_arm_arch 7M  7_M;  then echo armv7-m
4571         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4572         elif check_arm_arch 8A  8_A;  then echo armv8-a
4573         fi
4574     }
4575
4576     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4577
4578     case $cpu in
4579         armv*)
4580             cpuflags="-march=$cpu"
4581             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4582         ;;
4583         *)
4584             cpuflags="-mcpu=$cpu"
4585             case $cpu in
4586                 cortex-a*)                               subarch=armv7a  ;;
4587                 cortex-r*)                               subarch=armv7r  ;;
4588                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4589                 arm11*)                                  subarch=armv6   ;;
4590                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4591                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4592                 *)                             subarch=$(probe_arm_arch) ;;
4593             esac
4594         ;;
4595     esac
4596
4597     case "$subarch" in
4598         armv5t*)    enable fast_clz                ;;
4599         armv[6-8]*)
4600             enable fast_clz
4601             disabled fast_unaligned || enable fast_unaligned
4602             ;;
4603     esac
4604
4605 elif enabled avr32; then
4606
4607     case $cpu in
4608         ap7[02]0[0-2])
4609             subarch="avr32_ap"
4610             cpuflags="-mpart=$cpu"
4611         ;;
4612         ap)
4613             subarch="avr32_ap"
4614             cpuflags="-march=$cpu"
4615         ;;
4616         uc3[ab]*)
4617             subarch="avr32_uc"
4618             cpuflags="-mcpu=$cpu"
4619         ;;
4620         uc)
4621             subarch="avr32_uc"
4622             cpuflags="-march=$cpu"
4623         ;;
4624     esac
4625
4626 elif enabled bfin; then
4627
4628     cpuflags="-mcpu=$cpu"
4629
4630 elif enabled mips; then
4631
4632     cpuflags="-march=$cpu"
4633
4634     if [ "$cpu" != "generic" ]; then
4635         disable mips32r2
4636         disable mips32r5
4637         disable mips64r2
4638         disable mips32r6
4639         disable mips64r6
4640         disable loongson2
4641         disable loongson3
4642
4643         case $cpu in
4644             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4645                 enable mips32r2
4646                 disable msa
4647             ;;
4648             p5600|i6400|p6600)
4649                 disable mipsdsp
4650                 disable mipsdspr2
4651             ;;
4652             loongson*)
4653                 enable loongson2
4654                 enable loongson3
4655                 enable local_aligned
4656                 enable simd_align_16
4657                 enable fast_64bit
4658                 enable fast_clz
4659                 enable fast_cmov
4660                 enable fast_unaligned
4661                 disable aligned_stack
4662                 disable mipsfpu
4663                 disable mipsdsp
4664                 disable mipsdspr2
4665                 case $cpu in
4666                     loongson3*)
4667                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4668                     ;;
4669                     loongson2e)
4670                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4671                     ;;
4672                     loongson2f)
4673                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4674                     ;;
4675                 esac
4676             ;;
4677             *)
4678                 # Unknown CPU. Disable everything.
4679                 warn "unknown CPU. Disabling all MIPS optimizations."
4680                 disable mipsfpu
4681                 disable mipsdsp
4682                 disable mipsdspr2
4683                 disable msa
4684                 disable mmi
4685             ;;
4686         esac
4687
4688         case $cpu in
4689             24kc)
4690                 disable mipsfpu
4691                 disable mipsdsp
4692                 disable mipsdspr2
4693             ;;
4694             24kf*)
4695                 disable mipsdsp
4696                 disable mipsdspr2
4697             ;;
4698             24kec|34kc|1004kc)
4699                 disable mipsfpu
4700                 disable mipsdspr2
4701             ;;
4702             24kef*|34kf*|1004kf*)
4703                 disable mipsdspr2
4704             ;;
4705             74kc)
4706                 disable mipsfpu
4707             ;;
4708             p5600)
4709                 enable mips32r5
4710                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4711             ;;
4712             i6400)
4713                 enable mips64r6
4714                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4715             ;;
4716             p6600)
4717                 enable mips64r6
4718                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4719             ;;
4720         esac
4721     else
4722         # We do not disable anything. Is up to the user to disable the unwanted features.
4723         warn 'generic cpu selected'
4724     fi
4725
4726 elif enabled ppc; then
4727
4728     disable ldbrx
4729
4730     case $(tolower $cpu) in
4731         601|ppc601|powerpc601)
4732             cpuflags="-mcpu=601"
4733             disable altivec
4734         ;;
4735         603*|ppc603*|powerpc603*)
4736             cpuflags="-mcpu=603"
4737             disable altivec
4738         ;;
4739         604*|ppc604*|powerpc604*)
4740             cpuflags="-mcpu=604"
4741             disable altivec
4742         ;;
4743         g3|75*|ppc75*|powerpc75*)
4744             cpuflags="-mcpu=750"
4745             disable altivec
4746         ;;
4747         g4|745*|ppc745*|powerpc745*)
4748             cpuflags="-mcpu=7450"
4749             disable vsx
4750         ;;
4751         74*|ppc74*|powerpc74*)
4752             cpuflags="-mcpu=7400"
4753             disable vsx
4754         ;;
4755         g5|970|ppc970|powerpc970)
4756             cpuflags="-mcpu=970"
4757             disable vsx
4758         ;;
4759         power[3-6]*)
4760             cpuflags="-mcpu=$cpu"
4761             disable vsx
4762         ;;
4763         power[7-8]*)
4764             cpuflags="-mcpu=$cpu"
4765         ;;
4766         cell)
4767             cpuflags="-mcpu=cell"
4768             enable ldbrx
4769             disable vsx
4770         ;;
4771         e500mc)
4772             cpuflags="-mcpu=e500mc"
4773             disable altivec
4774         ;;
4775         e500v2)
4776             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4777             disable altivec
4778             disable dcbzl
4779         ;;
4780         e500)
4781             cpuflags="-mcpu=8540 -mhard-float"
4782             disable altivec
4783             disable dcbzl
4784         ;;
4785     esac
4786
4787 elif enabled sparc; then
4788
4789     case $cpu in
4790         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4791             cpuflags="-mcpu=$cpu"
4792         ;;
4793         ultrasparc*|niagara[234])
4794             cpuflags="-mcpu=$cpu"
4795         ;;
4796     esac
4797
4798 elif enabled x86; then
4799
4800     case $cpu in
4801         i[345]86|pentium)
4802             cpuflags="-march=$cpu"
4803             disable i686
4804             disable mmx
4805         ;;
4806         # targets that do NOT support nopl and conditional mov (cmov)
4807         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4808             cpuflags="-march=$cpu"
4809             disable i686
4810         ;;
4811         # targets that do support nopl and conditional mov (cmov)
4812         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4813         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4814         |amdfam10|barcelona|b[dt]ver*|znver*)
4815             cpuflags="-march=$cpu"
4816             enable i686
4817             enable fast_cmov
4818         ;;
4819         # targets that do support conditional mov but on which it's slow
4820         pentium4|pentium4m|prescott|nocona)
4821             cpuflags="-march=$cpu"
4822             enable i686
4823             disable fast_cmov
4824         ;;
4825     esac
4826
4827 fi
4828
4829 if [ "$cpu" != generic ]; then
4830     add_cflags  $cpuflags
4831     add_asflags $cpuflags
4832     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4833 fi
4834
4835 # compiler sanity check
4836 check_exec <<EOF
4837 int main(void){ return 0; }
4838 EOF
4839 if test "$?" != 0; then
4840     echo "$cc is unable to create an executable file."
4841     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4842         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4843         echo "Only do this if you know what cross compiling means."
4844     fi
4845     die "C compiler test failed."
4846 fi
4847
4848 add_cppflags -D_ISOC99_SOURCE
4849 add_cxxflags -D__STDC_CONSTANT_MACROS
4850 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4851
4852 # some compilers silently accept -std=c11, so we also need to check that the
4853 # version macro is defined properly
4854 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4855     add_cflags -std=c11 ||
4856     check_cflags -std=c99
4857
4858 check_cppflags -D_FILE_OFFSET_BITS=64
4859 check_cppflags -D_LARGEFILE_SOURCE
4860
4861 add_host_cppflags -D_ISOC99_SOURCE
4862 check_host_cflags -std=c99
4863 check_host_cflags -Wall
4864 check_host_cflags $host_cflags_speed
4865
4866 check_64bit(){
4867     arch32=$1
4868     arch64=$2
4869     expr=${3:-'sizeof(void *) > 4'}
4870     check_code cc "" "int test[2*($expr) - 1]" &&
4871         subarch=$arch64 || subarch=$arch32
4872     enable $subarch
4873 }
4874
4875 case "$arch" in
4876     aarch64|alpha|ia64)
4877         enabled shared && enable_weak pic
4878     ;;
4879     mips)
4880         check_64bit mips mips64 '_MIPS_SIM > 1'
4881         enabled shared && enable_weak pic
4882     ;;
4883     parisc)
4884         check_64bit parisc parisc64
4885         enabled shared && enable_weak pic
4886     ;;
4887     ppc)
4888         check_64bit ppc ppc64
4889         enabled shared && enable_weak pic
4890     ;;
4891     s390)
4892         check_64bit s390 s390x
4893         enabled shared && enable_weak pic
4894     ;;
4895     sparc)
4896         check_64bit sparc sparc64
4897         enabled shared && enable_weak pic
4898     ;;
4899     x86)
4900         check_64bit x86_32 x86_64
4901         # Treat x32 as x64 for now. Note it also needs pic if shared
4902         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4903             subarch=x86_64 && enable x86_64 && disable x86_32
4904         if enabled x86_64; then
4905             enabled shared && enable_weak pic
4906             objformat=elf64
4907         fi
4908     ;;
4909 esac
4910
4911 # OS specific
4912 case $target_os in
4913     aix)
4914         SHFLAGS=-shared
4915         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4916         enabled shared && add_ldflags -Wl,-brtl
4917         arflags='-Xany -r -c'
4918         ;;
4919     android)
4920         disable symver
4921         enable section_data_rel_ro
4922         SLIB_INSTALL_NAME='$(SLIBNAME)'
4923         SLIB_INSTALL_LINKS=
4924         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4925         ;;
4926     haiku)
4927         prefix_default="/boot/common"
4928         network_extralibs="-lnetwork"
4929         host_extralibs=
4930         ;;
4931     sunos)
4932         SHFLAGS='-shared -Wl,-h,$$(@F)'
4933         enabled x86 && append SHFLAGS -mimpure-text
4934         network_extralibs="-lsocket -lnsl"
4935         add_cppflags -D__EXTENSIONS__
4936         # When using suncc to build, the Solaris linker will mark
4937         # an executable with each instruction set encountered by
4938         # the Solaris assembler.  As our libraries contain their own
4939         # guards for processor-specific code, instead suppress
4940         # generation of the HWCAPS ELF section on Solaris x86 only.
4941         enabled_all suncc x86 &&
4942             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4943             add_ldflags -Wl,-M,mapfile
4944         nm_default='nm -P -g'
4945         version_script='-M'
4946         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4947         ;;
4948     netbsd)
4949         disable symver
4950         oss_indev_extralibs="-lossaudio"
4951         oss_outdev_extralibs="-lossaudio"
4952         enabled gcc || check_ldflags -Wl,-zmuldefs
4953         ;;
4954     openbsd|bitrig)
4955         disable symver
4956         SHFLAGS='-shared'
4957         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4958         SLIB_INSTALL_LINKS=
4959         oss_indev_extralibs="-lossaudio"
4960         oss_outdev_extralibs="-lossaudio"
4961         ;;
4962     dragonfly)
4963         disable symver
4964         ;;
4965     freebsd)
4966         ;;
4967     bsd/os)
4968         add_extralibs -lpoll -lgnugetopt
4969         strip="strip -d"
4970         ;;
4971     darwin)
4972         enabled ppc && add_asflags -force_cpusubtype_ALL
4973         install_name_dir_default='$(SHLIBDIR)'
4974         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4975         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4976         strip="${strip} -x"
4977         add_ldflags -Wl,-dynamic,-search_paths_first
4978         check_cflags -Werror=partial-availability
4979         SLIBSUF=".dylib"
4980         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4981         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4982         enabled x86_64 && objformat="macho64" || objformat="macho32"
4983         enabled_any pic shared x86_64 ||
4984             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4985         check_header dispatch/dispatch.h &&
4986             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4987         if test -n "$sysroot"; then
4988             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4989             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4990         fi
4991         version_script='-exported_symbols_list'
4992         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4993         ;;
4994     msys*)
4995         die "Native MSYS builds are discouraged, please use the MINGW environment."
4996         ;;
4997     mingw32*|mingw64*)
4998         target_os=mingw32
4999         LIBTARGET=i386
5000         if enabled x86_64; then
5001             LIBTARGET="i386:x86-64"
5002         elif enabled arm; then
5003             LIBTARGET="arm"
5004         elif enabled aarch64; then
5005             LIBTARGET="arm64"
5006         fi
5007         if enabled shared; then
5008             # Cannot build both shared and static libs when using dllimport.
5009             disable static
5010         fi
5011         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5012         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5013         shlibdir_default="$bindir_default"
5014         SLIBPREF=""
5015         SLIBSUF=".dll"
5016         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5017         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5018         if check_cmd lib.exe -list; then
5019             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5020             if enabled x86_64; then
5021                 LIBTARGET=x64
5022             fi
5023         else
5024             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5025         fi
5026         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5027         SLIB_INSTALL_LINKS=
5028         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5029         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5030         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5031         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5032         enabled x86_64 && objformat="win64" || objformat="win32"
5033         dlltool="${cross_prefix}dlltool"
5034         ranlib=:
5035         enable dos_paths
5036         check_ldflags -Wl,--nxcompat,--dynamicbase
5037         # Lets work around some stupidity in binutils.
5038         # ld will strip relocations from executables even though we need them
5039         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5040         # however ld then forgets what the entry point should be (oops) so we
5041         # have to manually (re)set it.
5042         if enabled x86_32; then
5043             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5044         elif enabled x86_64; then
5045             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5046             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5047             # Set image base >4GB for extra entropy with HEASLR
5048             add_ldexeflags -Wl,--image-base,0x140000000
5049             append SHFLAGS -Wl,--image-base,0x180000000
5050         fi
5051         ;;
5052     win32|win64)
5053         disable symver
5054         if enabled shared; then
5055             # Link to the import library instead of the normal static library
5056             # for shared libs.
5057             LD_LIB='%.lib'
5058             # Cannot build both shared and static libs with MSVC or icl.
5059             disable static
5060         fi
5061         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5062         shlibdir_default="$bindir_default"
5063         SLIBPREF=""
5064         SLIBSUF=".dll"
5065         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5066         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5067         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5068         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5069         SLIB_INSTALL_LINKS=
5070         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5071         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5072         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5073         enabled x86_64 && objformat="win64" || objformat="win32"
5074         ranlib=:
5075         enable dos_paths
5076         ;;
5077     cygwin*)
5078         target_os=cygwin
5079         shlibdir_default="$bindir_default"
5080         SLIBPREF="cyg"
5081         SLIBSUF=".dll"
5082         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5083         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5084         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5085         SLIB_INSTALL_LINKS=
5086         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5087         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5088         enabled x86_64 && objformat="win64" || objformat="win32"
5089         enable dos_paths
5090         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5091         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5092         ;;
5093     *-dos|freedos|opendos)
5094         network_extralibs="-lsocket"
5095         objformat="coff"
5096         enable dos_paths
5097         add_cppflags -U__STRICT_ANSI__
5098         ;;
5099     linux)
5100         enable section_data_rel_ro
5101         enabled_any arm aarch64 && enable_weak linux_perf
5102         ;;
5103     irix*)
5104         target_os=irix
5105         ranlib="echo ignoring ranlib"
5106         ;;
5107     os/2*)
5108         strip="lxlite -CS"
5109         striptype=""
5110         objformat="aout"
5111         add_cppflags -D_GNU_SOURCE
5112         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5113         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5114         LIBSUF="_s.a"
5115         SLIBPREF=""
5116         SLIBSUF=".dll"
5117         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5118         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5119         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5120             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5121             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5122             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5123             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5124         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5125             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5126         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5127         SLIB_INSTALL_LINKS=
5128         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5129         enable dos_paths
5130         enable_weak os2threads
5131         ;;
5132     gnu/kfreebsd)
5133         add_cppflags -D_BSD_SOURCE
5134         ;;
5135     gnu)
5136         ;;
5137     qnx)
5138         add_cppflags -D_QNX_SOURCE
5139         network_extralibs="-lsocket"
5140         ;;
5141     symbian)
5142         SLIBSUF=".dll"
5143         enable dos_paths
5144         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5145         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5146         add_ldflags -Wl,--target1-abs,--no-undefined \
5147                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5148                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5149         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5150                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5151                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5152         ;;
5153     minix)
5154         ;;
5155     none)
5156         ;;
5157     *)
5158         die "Unknown OS '$target_os'."
5159         ;;
5160 esac
5161
5162 # test if creating links works
5163 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5164 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5165 mkdir "$link_dest"
5166 $ln_s "$link_dest" "$link_name"
5167 touch "$link_dest/test_file"
5168 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5169     # create link to source path
5170     [ -e src ] && rm src
5171     $ln_s "$source_path" src
5172     source_link=src
5173 else
5174     # creating directory links doesn't work
5175     # fall back to using the full source path
5176     source_link="$source_path"
5177 fi
5178 # cleanup
5179 rm -r "$link_dest"
5180 rm -r "$link_name"
5181
5182 # determine libc flavour
5183
5184 probe_libc(){
5185     pfx=$1
5186     pfx_no_=${pfx%_}
5187     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5188     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5189         eval ${pfx}libc_type=uclibc
5190         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5191     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5192         eval ${pfx}libc_type=glibc
5193         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5194     # MinGW headers can be installed on Cygwin, so check for newlib first.
5195     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5196         eval ${pfx}libc_type=newlib
5197         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5198     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5199     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5200         eval ${pfx}libc_type=mingw64
5201         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5202             add_compat msvcrt/snprintf.o
5203             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5204         fi
5205         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5206         eval test \$${pfx_no_}cc_type = "gcc" &&
5207             add_${pfx}cppflags -D__printf__=__gnu_printf__
5208         check_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5209             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5210     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5211          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5212         eval ${pfx}libc_type=mingw32
5213         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5214             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5215             die "ERROR: MinGW32 runtime version must be >= 3.15."
5216         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5217         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5218             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5219         check_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5220             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5221         eval test \$${pfx_no_}cc_type = "gcc" &&
5222             add_${pfx}cppflags -D__printf__=__gnu_printf__
5223     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5224         eval ${pfx}libc_type=msvcrt
5225         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5226             if [ "$pfx" = host_ ]; then
5227                 add_host_cppflags -Dsnprintf=_snprintf
5228             else
5229                 add_compat strtod.o strtod=avpriv_strtod
5230                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5231                                              _snprintf=avpriv_snprintf  \
5232                                              vsnprintf=avpriv_vsnprintf
5233             fi
5234         fi
5235         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5236         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5237         # 0x601 by default unless something else is set by the user.
5238         # This can easily lead to us detecting functions only present
5239         # in such new versions and producing binaries requiring windows 7.0.
5240         # Therefore explicitly set the default to Vista unless the user has
5241         # set something else on the command line.
5242         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5243         # family. For these cases, configure is free to use any functions
5244         # found in the SDK headers by default. (Alternatively, we could force
5245         # _WIN32_WINNT to 0x0602 in that case.)
5246         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5247             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5248 #ifdef WINAPI_FAMILY
5249 #include <winapifamily.h>
5250 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5251 #error not desktop
5252 #endif
5253 #endif
5254 EOF
5255         if [ "$pfx" = "" ]; then
5256             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5257             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5258         fi
5259     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5260         eval ${pfx}libc_type=klibc
5261     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5262         eval ${pfx}libc_type=bionic
5263     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5264         eval ${pfx}libc_type=solaris
5265         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5266     fi
5267     check_${pfx}cc <<EOF
5268 #include <time.h>
5269 void *v = localtime_r;
5270 EOF
5271 test "$?" != 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
5272 #include <time.h>
5273 void *v = localtime_r;
5274 EOF
5275
5276     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5277 }
5278
5279 probe_libc
5280 probe_libc host_
5281
5282 # hacks for compiler/libc/os combinations
5283
5284 case $libc_type in
5285     bionic)
5286         add_compat strtod.o strtod=avpriv_strtod
5287         ;;
5288 esac
5289
5290 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5291     add_cppflags '-I\$(SRC_PATH)/compat/float'
5292
5293 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5294
5295 set_default libdir
5296 : ${shlibdir_default:="$libdir"}
5297 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5298
5299 set_default $PATHS_LIST
5300 set_default nm
5301
5302 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5303
5304 enable_weak_pic() {
5305     disabled pic && return
5306     enable pic
5307     add_cppflags -DPIC
5308     case "$target_os" in
5309     mingw*|cygwin*|win*)
5310         ;;
5311     *)
5312         add_cflags -fPIC
5313         add_asflags -fPIC
5314         ;;
5315     esac
5316 }
5317
5318 enabled pic && enable_weak_pic
5319
5320 check_cc <<EOF || die "Symbol mangling check failed."
5321 int ff_extern;
5322 EOF
5323 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5324 extern_prefix=${sym%%ff_extern*}
5325
5326 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5327
5328 for restrict_keyword in restrict __restrict__ __restrict ""; do
5329     check_cc <<EOF && break
5330 void foo(char * $restrict_keyword p);
5331 EOF
5332 done
5333
5334 check_cc <<EOF && enable pragma_deprecated
5335 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5336 EOF
5337
5338 check_cc <<EOF || die "endian test failed"
5339 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5340 EOF
5341 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5342
5343 check_cc <<EOF && enable const_nan
5344 #include <math.h>
5345 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5346 EOF
5347
5348 if ! enabled ppc64 || enabled bigendian; then
5349     disable vsx
5350 fi
5351
5352 check_gas() {
5353     log "check_gas using '$as' as AS"
5354     # :vararg is used on aarch64, arm and ppc altivec
5355     check_as <<EOF || return 1
5356 .macro m n, y:vararg=0
5357 \n: .int \y
5358 .endm
5359 m x
5360 EOF
5361     # .altmacro is only used in arm asm
5362     ! enabled arm || check_as <<EOF || return 1
5363 .altmacro
5364 EOF
5365     enable gnu_as
5366     return 0
5367 }
5368
5369 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5370     nogas=:
5371     enabled_any arm aarch64 && nogas=die
5372     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5373     as_noop=-v
5374
5375     case $as_type in
5376         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5377         gcc)  gaspp_as_type=gas ;;
5378         *)    gaspp_as_type=$as_type ;;
5379     esac
5380
5381     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5382
5383     test "${as#*gas-preprocessor.pl}" != "$as" ||
5384     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5385         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5386
5387     if ! check_gas ; then
5388         as=${gas:=$as}
5389         check_gas || \
5390             $nogas "GNU assembler not found, install/update gas-preprocessor"
5391     fi
5392
5393     check_as <<EOF && enable as_func
5394 .func test
5395 .endfunc
5396 EOF
5397 fi
5398
5399 check_inline_asm inline_asm_labels '"1:\n"'
5400
5401 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5402
5403 if enabled aarch64; then
5404     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5405     # internal assembler in clang 3.3 does not support this instruction
5406     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5407     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5408
5409     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5410
5411 elif enabled alpha; then
5412
5413     check_cflags -mieee
5414
5415 elif enabled arm; then
5416
5417     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5418
5419     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5420 float func(float a, float b){ return a+b; }
5421 EOF
5422
5423     enabled thumb && check_cflags -mthumb || check_cflags -marm
5424
5425     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5426         enable vfp_args
5427     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5428         enable vfp_args
5429     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5430         case "${cross_prefix:-$cc}" in
5431             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5432             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5433 __asm__ (".eabi_attribute 28, 1");
5434 int main(void) { return 0; }
5435 EOF
5436         esac
5437         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5438     fi
5439
5440     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5441     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5442     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5443     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5444     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5445     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5446     enabled setend  && check_insn setend  'setend be'
5447
5448     [ $target_os = linux ] || [ $target_os = android ] ||
5449         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5450             $ARCH_EXT_LIST_ARM
5451
5452     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5453
5454     check_as <<EOF && enable as_arch_directive
5455 .arch armv7-a
5456 EOF
5457     check_as <<EOF && enable as_fpu_directive
5458 .fpu neon
5459 EOF
5460
5461     # llvm's integrated assembler supports .object_arch from llvm 3.5
5462     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5463         check_as <<EOF && enable as_object_arch
5464 .object_arch armv4
5465 EOF
5466
5467     # MS armasm fails to assemble our PIC constructs
5468     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5469
5470 elif enabled mips; then
5471
5472     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5473     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5474     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5475
5476     # Enable minimum ISA based on selected options
5477     if enabled mips64; then
5478         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5479         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5480         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5481     else
5482         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5483         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5484         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5485         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5486     fi
5487
5488     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5489     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5490     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5491     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5492     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5493
5494     if enabled bigendian && enabled msa; then
5495         disable msa
5496     fi
5497
5498 elif enabled parisc; then
5499
5500     if enabled gcc; then
5501         case $($cc -dumpversion) in
5502             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5503         esac
5504     fi
5505
5506 elif enabled ppc; then
5507
5508     enable local_aligned
5509
5510     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5511     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5512     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5513     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5514
5515     if enabled altivec; then
5516         check_cflags -maltivec -mabi=altivec
5517
5518         # check if our compiler supports Motorola AltiVec C API
5519         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5520                                  vector signed int v2 = (vector signed int) { 1 };
5521                                  v1 = vec_add(v1, v2);" ||
5522             disable altivec
5523
5524         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5525     fi
5526
5527     if enabled vsx; then
5528         check_cflags -mvsx &&
5529         check_code cc altivec.h "int v[4] = { 0 };
5530                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5531             disable vsx
5532     fi
5533
5534     if enabled power8; then
5535         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5536     fi
5537
5538 elif enabled x86; then
5539
5540     check_builtin rdtsc    intrin.h   "__rdtsc()"
5541     check_builtin mm_empty mmintrin.h "_mm_empty()"
5542
5543     enable local_aligned
5544
5545     # check whether EBP is available on x86
5546     # As 'i' is stored on the stack, this program will crash
5547     # if the base pointer is used to access it because the
5548     # base pointer is cleared in the inline assembly code.
5549     check_exec_crash <<EOF && enable ebp_available
5550 volatile int i=0;
5551 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5552 return i;
5553 EOF
5554
5555     # check whether EBX is available on x86
5556     check_inline_asm ebx_available '""::"b"(0)' &&
5557         check_inline_asm ebx_available '"":::"%ebx"'
5558
5559     # check whether xmm clobbers are supported
5560     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5561
5562     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5563         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5564
5565     # check whether binutils is new enough to compile SSSE3/MMXEXT
5566     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5567     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5568
5569     probe_x86asm(){
5570         x86asmexe_probe=$1
5571         if check_cmd $x86asmexe_probe -v; then
5572             x86asmexe=$x86asmexe_probe
5573             x86asm_type=nasm
5574             x86asm_debug="-g -F dwarf"
5575             X86ASMDEP=
5576             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5577         elif check_cmd $x86asmexe_probe --version; then
5578             x86asmexe=$x86asmexe_probe
5579             x86asm_type=yasm
5580             x86asm_debug="-g dwarf2"
5581             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5582             X86ASM_DEPFLAGS=
5583         fi
5584         check_x86asm "movbe ecx, [5]" && enable x86asm
5585     }
5586
5587     if ! disabled_any asm mmx x86asm; then
5588         disable x86asm
5589         for program in $x86asmexe nasm yasm; do
5590             probe_x86asm $program && break
5591         done
5592         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5593         X86ASMFLAGS="-f $objformat"
5594         enabled pic               && append X86ASMFLAGS "-DPIC"
5595         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5596         case "$objformat" in
5597             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5598         esac
5599
5600         check_x86asm "vmovdqa32 [eax]{k1}{z}, zmm0"    || disable avx512_external
5601         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5602         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5603         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5604         check_x86asm "CPU amdnop" || disable cpunop
5605     fi
5606
5607     case "$cpu" in
5608         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5609             disable fast_clz
5610         ;;
5611     esac
5612
5613 fi
5614
5615 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5616
5617 check_ldflags -Wl,--as-needed
5618 check_ldflags -Wl,-z,noexecstack
5619
5620 if ! disabled network; then
5621     check_func getaddrinfo $network_extralibs
5622     check_func inet_aton $network_extralibs
5623
5624     check_type netdb.h "struct addrinfo"
5625     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5626     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5627     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5628     check_type poll.h "struct pollfd"
5629     check_type netinet/sctp.h "struct sctp_event_subscribe"
5630     check_struct "sys/socket.h" "struct msghdr" msg_flags
5631     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5632     check_type netinet/in.h "struct sockaddr_in6"
5633     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5634     check_type "sys/types.h sys/socket.h" socklen_t
5635
5636     # Prefer arpa/inet.h over winsock2
5637     if check_header arpa/inet.h ; then
5638         check_func closesocket
5639     elif check_header winsock2.h ; then
5640         check_func_headers winsock2.h closesocket -lws2 &&
5641             network_extralibs="-lws2" ||
5642         { check_func_headers winsock2.h closesocket -lws2_32 &&
5643             network_extralibs="-lws2_32"; } || disable winsock2_h network
5644         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5645
5646         check_type ws2tcpip.h socklen_t
5647         check_type ws2tcpip.h "struct addrinfo"
5648         check_type ws2tcpip.h "struct group_source_req"
5649         check_type ws2tcpip.h "struct ip_mreq_source"
5650         check_type ws2tcpip.h "struct ipv6_mreq"
5651         check_type winsock2.h "struct pollfd"
5652         check_struct winsock2.h "struct sockaddr" sa_len
5653         check_type ws2tcpip.h "struct sockaddr_in6"
5654         check_type ws2tcpip.h "struct sockaddr_storage"
5655     else
5656         disable network
5657     fi
5658 fi
5659
5660 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5661 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5662 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5663 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5664 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5665 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5666 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5667
5668 case "$custom_allocator" in
5669     jemalloc)
5670         # jemalloc by default does not use a prefix
5671         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5672     ;;
5673     tcmalloc)
5674         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5675         malloc_prefix=tc_
5676     ;;
5677 esac
5678
5679 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5680 check_func  ${malloc_prefix}memalign            && enable memalign
5681 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5682
5683 check_func  access
5684 check_func_headers stdlib.h arc4random
5685 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5686 check_func  fcntl
5687 check_func  fork
5688 check_func  gethrtime
5689 check_func  getopt
5690 check_func  getrusage
5691 check_func  gettimeofday
5692 check_func  isatty
5693 check_func  mkstemp
5694 check_func  mmap
5695 check_func  mprotect
5696 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5697 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5698 check_func  sched_getaffinity
5699 check_func  setrlimit
5700 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5701 check_func  strerror_r
5702 check_func  sysconf
5703 check_func  sysctl
5704 check_func  usleep
5705
5706 check_func_headers conio.h kbhit
5707 check_func_headers io.h setmode
5708 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5709 check_func_headers mach/mach_time.h mach_absolute_time
5710 check_func_headers stdlib.h getenv
5711 check_func_headers sys/stat.h lstat
5712
5713 check_func_headers windows.h GetProcessAffinityMask
5714 check_func_headers windows.h GetProcessTimes
5715 check_func_headers windows.h GetSystemTimeAsFileTime
5716 check_func_headers windows.h LoadLibrary
5717 check_func_headers windows.h MapViewOfFile
5718 check_func_headers windows.h PeekNamedPipe
5719 check_func_headers windows.h SetConsoleTextAttribute
5720 check_func_headers windows.h SetConsoleCtrlHandler
5721 check_func_headers windows.h Sleep
5722 check_func_headers windows.h VirtualAlloc
5723 check_func_headers glob.h glob
5724 enabled xlib &&
5725     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5726
5727 check_header direct.h
5728 check_header dirent.h
5729 check_header dxgidebug.h
5730 check_header dxva.h
5731 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5732 check_header io.h
5733 check_header libcrystalhd/libcrystalhd_if.h
5734 check_header malloc.h
5735 check_header net/udplite.h
5736 check_header poll.h
5737 check_header sys/param.h
5738 check_header sys/resource.h
5739 check_header sys/select.h
5740 check_header sys/time.h
5741 check_header sys/un.h
5742 check_header termios.h
5743 check_header unistd.h
5744 check_header valgrind/valgrind.h
5745 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5746 check_header windows.h
5747 check_header X11/extensions/XvMClib.h
5748 check_header asm/types.h
5749
5750 # it seems there are versions of clang in some distros that try to use the
5751 # gcc headers, which explodes for stdatomic
5752 # so we also check that atomics actually work here
5753 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5754
5755 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5756 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5757 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5758 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5759 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5760
5761 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5762 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5763 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5764
5765 enabled appkit       && check_apple_framework AppKit
5766 enabled audiotoolbox && check_apple_framework AudioToolbox
5767 enabled avfoundation && check_apple_framework AVFoundation
5768 enabled coreimage    && check_apple_framework CoreImage
5769 enabled videotoolbox && check_apple_framework VideoToolbox
5770
5771 check_apple_framework CoreFoundation
5772 check_apple_framework CoreMedia
5773 check_apple_framework CoreVideo
5774
5775 enabled avfoundation && {
5776     disable coregraphics applicationservices
5777     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5778     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5779
5780 enabled videotoolbox && {
5781     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5782     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5783 }
5784
5785 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5786
5787 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5788 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5789 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5790 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5791 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5792
5793 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5794 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5795 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5796 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5797 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5798 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5799 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5800 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5801 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5802 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5803
5804 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5805
5806 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5807
5808 if ! disabled w32threads && ! enabled pthreads; then
5809     check_func_headers "windows.h process.h" _beginthreadex &&
5810         check_type "windows.h" CONDITION_VARIABLE &&
5811         enable w32threads || disable w32threads
5812     if ! enabled w32threads && enabled winrt; then
5813         check_func_headers "windows.h" CreateThread &&
5814             enable w32threads || disable w32threads
5815     fi
5816 fi
5817
5818 # check for some common methods of building with pthread support
5819 # do this before the optional library checks as some of them require pthreads
5820 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5821     if check_lib pthreads pthread.h pthread_join   -pthread &&
5822        check_lib pthreads pthread.h pthread_create -pthread; then
5823         add_cflags -pthread
5824     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5825          check_lib pthreads pthread.h pthread_create -pthreads; then
5826         add_cflags -pthreads
5827     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5828          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5829         add_cflags -ldl -pthread
5830     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5831          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5832         :
5833     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5834          check_lib pthreads pthread.h pthread_create -lpthread; then
5835         :
5836     elif check_func pthread_join && check_func pthread_create; then
5837         enable pthreads
5838     fi
5839     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5840
5841     if enabled pthreads; then
5842         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5843         check_func pthread_cancel $pthreads_extralibs
5844     fi
5845 fi
5846
5847 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5848 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5849 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5850
5851 # On some systems dynamic loading requires no extra linker flags
5852 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5853
5854 check_lib libm math.h sin -lm
5855
5856 atan2f_args=2
5857 copysign_args=2
5858 hypot_args=2
5859 ldexpf_args=2
5860 powf_args=2
5861
5862 for func in $MATH_FUNCS; do
5863     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5864 done
5865
5866 for func in $COMPLEX_FUNCS; do
5867     eval check_complexfunc $func \${${func}_args:-1}
5868 done
5869
5870 # these are off by default, so fail if requested and not available
5871 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5872 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5873 enabled decklink          && { require_header DeckLinkAPI.h &&
5874                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5875 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5876 enabled frei0r            && require_header frei0r.h
5877 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5878 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5879 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5880 enabled ladspa            && require_header ladspa.h
5881 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5882 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5883 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5884 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5885 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5886 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5887                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5888                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5889 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5890 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5891 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5892 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5893                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5894                                  warn "using libfdk without pkg-config"; } }
5895 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"
5896 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5897 enabled fontconfig        && enable libfontconfig
5898 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5899 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5900 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5901 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5902                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5903 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5904                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5905                                done || die "ERROR: libgsm not found"; }
5906 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5907 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5908 # While it may appear that require is being used as a pkg-config
5909 # fallback for libmfx, it is actually being used to detect a different
5910 # installation route altogether.  If libmfx is installed via the Intel
5911 # Media SDK or Intel Media Server Studio, these don't come with
5912 # pkg-config support.  Instead, users should make sure that the build
5913 # can find the libraries and headers through other means.
5914 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5915                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5916 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5917 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
5918 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5919 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5920                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5921                                die "ERROR: libnpp not found"; }
5922 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5923 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5924 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5925                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5926                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5927                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5928 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5929 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5930                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5931 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5932 enabled libopus           && {
5933     enabled libopus_decoder && {
5934         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5935     }
5936     enabled libopus_encoder && {
5937         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5938     }
5939 }
5940 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5941 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5942 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5943 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5944 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5945 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5946                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5947 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5948 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5949 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5950 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5951 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5952 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5953 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
5954 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5955                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5956                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5957 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5958 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5959 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
5960 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5961 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5962                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5963
5964 enabled libvpx            && {
5965     enabled libvpx_vp8_decoder && {
5966         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5967             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5968                 die "ERROR: libvpx decoder version must be >=1.4.0";
5969     }
5970     enabled libvpx_vp8_encoder && {
5971         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5972             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5973                 die "ERROR: libvpx encoder version must be >=1.4.0";
5974     }
5975     enabled libvpx_vp9_decoder && {
5976         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5977             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
5978     }
5979     enabled libvpx_vp9_encoder && {
5980         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5981             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
5982     }
5983     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5984         die "libvpx enabled but no supported decoders found"
5985     fi
5986 }
5987
5988 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5989 enabled libwebp           && {
5990     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5991     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5992 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5993                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
5994                                  warn "using libx264 without pkg-config"; } } &&
5995                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5996                              { check_cpp_condition x264.h "X264_MPEG2" &&
5997                                enable libx262; }
5998 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5999                              require_cpp_condition x265.h "X265_BUILD >= 68"
6000 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6001 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6002 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6003 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6004 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6005                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6006                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6007 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6008 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6009 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6010                                { ! enabled cross_compile &&
6011                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6012                                  add_ldflags -L/opt/vc/lib/ &&
6013                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6014                                die "ERROR: mmal not found" &&
6015                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6016 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6017                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6018                                die "ERROR: openal not found"; } &&
6019                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6020                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6021 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6022                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6023                                die "ERROR: opencl not found"; } &&
6024                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6025                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6026                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6027 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6028                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6029                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6030                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6031                                die "ERROR: opengl not found."
6032                              }
6033 enabled omx               && require_header OMX_Core.h
6034 enabled omx_rpi           && { check_header OMX_Core.h ||
6035                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6036                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6037 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6038                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6039                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6040                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6041                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6042                                die "ERROR: openssl not found"; }
6043 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6044                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6045                                { enabled libdrm ||
6046                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6047                              }
6048
6049 if enabled gcrypt; then
6050     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6051     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6052         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6053         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6054         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6055             die "ERROR: gcrypt not found"
6056         add_cflags $gcrypt_cflags
6057     else
6058         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6059     fi
6060 fi
6061
6062 if enabled sdl2; then
6063     SDL2_CONFIG="${cross_prefix}sdl2-config"
6064     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6065     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6066         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6067         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6068         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6069         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6070         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6071             enable sdl2
6072     fi
6073     if test $target_os = "mingw32"; then
6074         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6075     fi
6076 fi
6077
6078 if enabled decklink; then
6079     case $target_os in
6080         mingw32*|mingw64*|win32|win64)
6081             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6082             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6083             ;;
6084     esac
6085 fi
6086
6087 enabled securetransport &&
6088     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6089     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6090         disable securetransport
6091
6092 enabled securetransport &&
6093     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6094
6095 enabled schannel &&
6096     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6097     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6098     schannel_extralibs="-lsecur32" ||
6099         disable schannel
6100
6101 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6102 enabled makeinfo \
6103     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6104     && enable makeinfo_html || disable makeinfo_html
6105 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6106 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6107 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6108 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6109
6110 # check V4L2 codecs available in the API
6111 check_header linux/fb.h
6112 check_header linux/videodev2.h
6113 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6114 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6115 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6116 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6117 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6118 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6119 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6120 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6121 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6122 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6123 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6124
6125 check_header sys/videoio.h
6126 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6127
6128 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6129 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6130 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6131 # w32api 3.12 had it defined wrong
6132 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6133
6134 check_type "dshow.h" IBaseFilter
6135
6136 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6137 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6138     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6139     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6140     check_header "dev/ic/bt8xx.h"
6141
6142 if check_struct sys/soundcard.h audio_buf_info bytes; then
6143     enable_sanitized sys/soundcard.h
6144 else
6145     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6146     #include <sys/soundcard.h>
6147     audio_buf_info abc;
6148 EOF
6149 fi
6150
6151 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6152     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6153
6154 enabled libjack &&
6155     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6156
6157 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6158
6159 if enabled libcdio; then
6160     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6161     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6162     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6163     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6164     die "ERROR: No usable libcdio/cdparanoia found"
6165 fi
6166
6167 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6168     disable libxcb_shm libxcb_shape libxcb_xfixes
6169
6170 if enabled libxcb; then
6171     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6172     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6173     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6174 fi
6175
6176 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6177
6178 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6179 # the desktop api partition
6180 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6181 #ifdef WINAPI_FAMILY
6182 #include <winapifamily.h>
6183 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6184 #error desktop, not uwp
6185 #else
6186 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6187 #endif
6188 #else
6189 #error no family set
6190 #endif
6191 EOF
6192
6193 enabled vaapi &&
6194     check_lib vaapi va/va.h vaInitialize -lva
6195
6196 enabled vaapi &&
6197     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6198     disable vaapi
6199
6200 enabled vaapi &&
6201     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6202
6203 enabled vaapi &&
6204     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6205
6206 enabled vaapi &&
6207     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6208     enable vaapi_1
6209
6210 if enabled_all opencl vaapi ; then
6211     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6212         enable opencl_vaapi_beignet
6213     if enabled libmfx ; then
6214         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6215             enable opencl_vaapi_intel_media
6216     fi
6217 fi
6218
6219 if enabled_all opencl dxva2 ; then
6220     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6221         enable opencl_dxva2
6222 fi
6223
6224 if enabled_all opencl d3d11va ; then
6225     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6226         enable opencl_d3d11
6227 fi
6228
6229 if enabled_all opencl libdrm ; then
6230     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6231         enable opencl_drm_arm
6232 fi
6233
6234 enabled vdpau &&
6235     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6236     disable vdpau
6237
6238 enabled vdpau &&
6239     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6240
6241 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6242
6243 if enabled x86; then
6244     case $target_os in
6245         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6246             ;;
6247         *)
6248             disable cuda cuvid nvdec nvenc
6249             ;;
6250     esac
6251 else
6252     disable cuda cuvid nvdec nvenc
6253 fi
6254
6255 enabled nvenc &&
6256     check_cc -I$source_path <<EOF || disable nvenc
6257 #include "compat/nvenc/nvEncodeAPI.h"
6258 NV_ENCODE_API_FUNCTION_LIST flist;
6259 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6260 int main(void) { return 0; }
6261 EOF
6262
6263 enabled amf &&
6264     check_cpp_condition "AMF/core/Version.h" \
6265         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001" ||
6266     disable amf
6267
6268 # Funny iconv installations are not unusual, so check it after all flags have been set
6269 if enabled libc_iconv; then
6270     check_func_headers iconv.h iconv
6271 elif enabled iconv; then
6272     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6273 fi
6274
6275 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6276
6277 # add some useful compiler flags if supported
6278 check_cflags -Wdeclaration-after-statement
6279 check_cflags -Wall
6280 check_cflags -Wdisabled-optimization
6281 check_cflags -Wpointer-arith
6282 check_cflags -Wredundant-decls
6283 check_cflags -Wwrite-strings
6284 check_cflags -Wtype-limits
6285 check_cflags -Wundef
6286 check_cflags -Wmissing-prototypes
6287 check_cflags -Wno-pointer-to-int-cast
6288 check_cflags -Wstrict-prototypes
6289 check_cflags -Wempty-body
6290
6291 if enabled extra_warnings; then
6292     check_cflags -Wcast-qual
6293     check_cflags -Wextra
6294     check_cflags -Wpedantic
6295 fi
6296
6297 check_disable_warning(){
6298     warning_flag=-W${1#-Wno-}
6299     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6300 }
6301
6302 test_cflags -Werror=unused-command-line-argument &&
6303     append unknown_warning_flags "-Werror=unused-command-line-argument"
6304 test_cflags -Werror=unknown-warning-option &&
6305     append unknown_warning_flags "-Werror=unknown-warning-option"
6306
6307 check_disable_warning -Wno-parentheses
6308 check_disable_warning -Wno-switch
6309 check_disable_warning -Wno-format-zero-length
6310 check_disable_warning -Wno-pointer-sign
6311 check_disable_warning -Wno-unused-const-variable
6312 check_disable_warning -Wno-bool-operation
6313
6314 check_disable_warning_headers(){
6315     warning_flag=-W${1#-Wno-}
6316     test_cflags $warning_flag && add_cflags_headers $1
6317 }
6318
6319 check_disable_warning_headers -Wno-deprecated-declarations
6320 check_disable_warning_headers -Wno-unused-variable
6321
6322 check_cc <<EOF && enable blocks_extension
6323 void (^block)(void);
6324 EOF
6325
6326 # add some linker flags
6327 check_ldflags -Wl,--warn-common
6328 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6329 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6330 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6331
6332 # add some strip flags
6333 check_stripflags -x
6334
6335 enabled neon_clobber_test &&
6336     check_ldflags -Wl,--wrap,avcodec_open2              \
6337                   -Wl,--wrap,avcodec_decode_audio4      \
6338                   -Wl,--wrap,avcodec_decode_video2      \
6339                   -Wl,--wrap,avcodec_decode_subtitle2   \
6340                   -Wl,--wrap,avcodec_encode_audio2      \
6341                   -Wl,--wrap,avcodec_encode_video2      \
6342                   -Wl,--wrap,avcodec_encode_subtitle    \
6343                   -Wl,--wrap,avcodec_send_packet        \
6344                   -Wl,--wrap,avcodec_receive_packet     \
6345                   -Wl,--wrap,avcodec_send_frame         \
6346                   -Wl,--wrap,avcodec_receive_frame      \
6347                   -Wl,--wrap,swr_convert                \
6348                   -Wl,--wrap,avresample_convert ||
6349     disable neon_clobber_test
6350
6351 enabled xmm_clobber_test &&
6352     check_ldflags -Wl,--wrap,avcodec_open2              \
6353                   -Wl,--wrap,avcodec_decode_audio4      \
6354                   -Wl,--wrap,avcodec_decode_video2      \
6355                   -Wl,--wrap,avcodec_decode_subtitle2   \
6356                   -Wl,--wrap,avcodec_encode_audio2      \
6357                   -Wl,--wrap,avcodec_encode_video2      \
6358                   -Wl,--wrap,avcodec_encode_subtitle    \
6359                   -Wl,--wrap,avcodec_send_packet        \
6360                   -Wl,--wrap,avcodec_receive_packet     \
6361                   -Wl,--wrap,avcodec_send_frame         \
6362                   -Wl,--wrap,avcodec_receive_frame      \
6363                   -Wl,--wrap,swr_convert                \
6364                   -Wl,--wrap,avresample_convert         \
6365                   -Wl,--wrap,sws_scale ||
6366     disable xmm_clobber_test
6367
6368 check_ld "cc" <<EOF && enable proper_dce
6369 extern const int array[512];
6370 static inline int func(void) { return array[0]; }
6371 int main(void) { return 0; }
6372 EOF
6373
6374 if enabled proper_dce; then
6375     echo "X { local: *; };" > $TMPV
6376     if test_ldflags -Wl,${version_script},$TMPV; then
6377         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6378         quotes='""'
6379         check_cc <<EOF && enable symver_asm_label
6380 void ff_foo(void) __asm__ ("av_foo@VERSION");
6381 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6382 EOF
6383         check_cc <<EOF && enable symver_gnu_asm
6384 __asm__(".symver ff_foo,av_foo@VERSION");
6385 void ff_foo(void) {}
6386 EOF
6387     fi
6388 fi
6389
6390 if [ -z "$optflags" ]; then
6391     if enabled small; then
6392         optflags=$cflags_size
6393     elif enabled optimizations; then
6394         optflags=$cflags_speed
6395     else
6396         optflags=$cflags_noopt
6397     fi
6398 fi
6399
6400 if [ -z "$nvccflags" ]; then
6401     nvccflags=$nvccflags_default
6402 fi
6403
6404 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6405     nvccflags="$nvccflags -m64"
6406 else
6407     nvccflags="$nvccflags -m32"
6408 fi
6409
6410 check_optflags(){
6411     check_cflags "$@"
6412     enabled lto && check_ldflags "$@"
6413 }
6414
6415 check_optflags $optflags
6416 check_optflags -fno-math-errno
6417 check_optflags -fno-signed-zeros
6418
6419 if enabled lto; then
6420     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6421     check_cflags  -flto
6422     check_ldflags -flto $cpuflags
6423     disable inline_asm_direct_symbol_refs
6424 fi
6425
6426 enabled ftrapv && check_cflags -ftrapv
6427
6428 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6429 int x;
6430 EOF
6431
6432
6433 if enabled icc; then
6434     # Just warnings, no remarks
6435     check_cflags -w1
6436     # -wd: Disable following warnings
6437     # 144, 167, 556: -Wno-pointer-sign
6438     # 188: enumerated type mixed with another type
6439     # 1292: attribute "foo" ignored
6440     # 1419: external declaration in primary source file
6441     # 10006: ignoring unknown option -fno-signed-zeros
6442     # 10148: ignoring unknown option -Wno-parentheses
6443     # 10156: ignoring option '-W'; no argument required
6444     # 13200: No EMMS instruction before call to function
6445     # 13203: No EMMS instruction before return from function
6446     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6447     # 11030: Warning unknown option --as-needed
6448     # 10156: ignoring option '-export'; no argument required
6449     check_ldflags -wd10156,11030
6450     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6451     enable ebp_available
6452     # The test above does not test linking
6453     enabled lto && disable symver_asm_label
6454     if enabled x86_32; then
6455         icc_version=$($cc -dumpversion)
6456         test ${icc_version%%.*} -ge 11 &&
6457             check_cflags -falign-stack=maintain-16-byte ||
6458             disable aligned_stack
6459     fi
6460 elif enabled gcc; then
6461     check_optflags -fno-tree-vectorize
6462     check_cflags -Werror=format-security
6463     check_cflags -Werror=implicit-function-declaration
6464     check_cflags -Werror=missing-prototypes
6465     check_cflags -Werror=return-type
6466     check_cflags -Werror=vla
6467     check_cflags -Wformat
6468     check_cflags -fdiagnostics-color=auto
6469     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6470 elif enabled llvm_gcc; then
6471     check_cflags -mllvm -stack-alignment=16
6472 elif enabled clang; then
6473     check_cflags -mllvm -stack-alignment=16
6474     check_cflags -mstack-alignment=16
6475     check_cflags -Qunused-arguments
6476     check_cflags -Werror=implicit-function-declaration
6477     check_cflags -Werror=missing-prototypes
6478     check_cflags -Werror=return-type
6479 elif enabled cparser; then
6480     add_cflags -Wno-missing-variable-declarations
6481     add_cflags -Wno-empty-statement
6482 elif enabled armcc; then
6483     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6484     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6485     # 2523: use of inline assembly is deprecated
6486     add_cflags -W${armcc_opt},--diag_suppress=2523
6487     add_cflags -W${armcc_opt},--diag_suppress=1207
6488     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6489     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6490     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6491     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6492 elif enabled pathscale; then
6493     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6494     disable inline_asm
6495 elif enabled_any msvc icl; then
6496     enabled x86_32 && disable aligned_stack
6497     enabled_all x86_32 debug && add_cflags -Oy-
6498     enabled debug && add_ldflags -debug
6499     enable pragma_deprecated
6500     if enabled icl; then
6501         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6502         # (correctly) on icl 13.x.
6503         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6504             add_cflags -Qansi-alias
6505         # Some inline asm is not compilable in debug
6506         if enabled debug; then
6507             disable ebp_available
6508             disable ebx_available
6509         fi
6510     fi
6511     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6512     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6513     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6514     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6515     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6516     # MSVC 2013 and newer can handle it fine.
6517     # If this declspec fails, force including stdlib.h before the restrict redefinition
6518     # happens in config.h.
6519     if [ $restrict_keyword != restrict ]; then
6520         check_cc <<EOF || add_cflags -FIstdlib.h
6521 __declspec($restrict_keyword) void *foo(int);
6522 EOF
6523     fi
6524     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6525     # Issue has been fixed in MSVC v19.00.24218.
6526     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6527         check_cflags -d2SSAOptimizer-
6528     # enable utf-8 source processing on VS2015 U2 and newer
6529     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6530         add_cflags -utf-8
6531 fi
6532
6533 for pfx in "" host_; do
6534     varname=${pfx%_}cc_type
6535     eval "type=\$$varname"
6536     if [ "$type" = "msvc" ]; then
6537         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6538 static inline int foo(int a) { return a; }
6539 EOF
6540     fi
6541 done
6542
6543 case $as_type in
6544     clang)
6545         add_asflags -Qunused-arguments
6546     ;;
6547 esac
6548
6549 case $ld_type in
6550     clang)
6551         check_ldflags -Qunused-arguments
6552     ;;
6553 esac
6554
6555 enable frame_thread_encoder
6556
6557 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6558
6559 check_deps $CONFIG_LIST       \
6560            $CONFIG_EXTRA      \
6561            $HAVE_LIST         \
6562            $ALL_COMPONENTS    \
6563
6564 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"
6565 enabled avresample && warn "Building with deprecated library libavresample"
6566
6567 if test $target_os = "haiku"; then
6568     disable memalign
6569     disable posix_memalign
6570 fi
6571
6572 flatten_extralibs(){
6573     unset nested_entries
6574     list_name=$1
6575     eval list=\$${1}
6576     for entry in $list; do
6577         entry_copy=$entry
6578         resolve entry_copy
6579         append nested_entries $(filter '*_extralibs' $entry_copy)
6580         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6581         eval $entry="\$flat_entries"
6582     done
6583     append $list_name "$nested_entries"
6584
6585     resolve nested_entries
6586     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6587         flatten_extralibs $list_name
6588     fi
6589 }
6590
6591 flatten_extralibs_wrapper(){
6592     list_name=$1
6593     flatten_extralibs $list_name
6594     unique $list_name
6595     resolve $list_name
6596     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6597     eval printf \''%s'\' \""\$$list_name"\"
6598 }
6599
6600 for linkunit in $LIBRARY_LIST; do
6601     unset current_extralibs
6602     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6603     for comp in ${components}; do
6604         enabled $comp || continue
6605         comp_extralibs="${comp}_extralibs"
6606         append current_extralibs $comp_extralibs
6607     done
6608     eval prepend ${linkunit}_extralibs $current_extralibs
6609 done
6610
6611 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6612     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6613 done
6614
6615 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6616
6617 for thread in $THREADS_LIST; do
6618     if enabled $thread; then
6619         test -n "$thread_type" &&
6620             die "ERROR: Only one thread type must be selected." ||
6621             thread_type="$thread"
6622     fi
6623 done
6624
6625 if disabled stdatomic; then
6626     if enabled atomics_gcc; then
6627         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6628     elif enabled atomics_win32; then
6629         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6630     elif enabled atomics_suncc; then
6631         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6632     elif enabled pthreads; then
6633         add_compat atomics/pthread/stdatomic.o
6634         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6635     else
6636         enabled threads && die "Threading is enabled, but no atomics are available"
6637         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6638     fi
6639 fi
6640
6641 # Check if requested libraries were found.
6642 for lib in $AUTODETECT_LIBS; do
6643     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6644 done
6645
6646 enabled zlib && add_cppflags -DZLIB_CONST
6647
6648 # conditional library dependencies, in linking order
6649 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6650 enabled afir_filter         && prepend avfilter_deps "avcodec"
6651 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6652 enabled aresample_filter    && prepend avfilter_deps "swresample"
6653 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6654 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6655 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6656 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6657 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6658 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6659 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6660 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6661 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6662 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6663 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6664 enabled pan_filter          && prepend avfilter_deps "swresample"
6665 enabled pp_filter           && prepend avfilter_deps "postproc"
6666 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6667 enabled resample_filter && prepend avfilter_deps "avresample"
6668 enabled sab_filter          && prepend avfilter_deps "swscale"
6669 enabled scale_filter    && prepend avfilter_deps "swscale"
6670 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6671 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6672 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6673 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6674 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6675 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6676 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6677 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6678 enabled spp_filter          && prepend avfilter_deps "avcodec"
6679 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6680 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6681 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6682
6683 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6684
6685 #FIXME
6686 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6687
6688 enabled opus_decoder    && prepend avcodec_deps "swresample"
6689
6690 expand_deps(){
6691     lib_deps=${1}_deps
6692     eval "deps=\$$lib_deps"
6693     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6694     unique $lib_deps
6695 }
6696
6697 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6698 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6699
6700 map 'expand_deps $v' $LIBRARY_LIST
6701
6702 if test "$quiet" != "yes"; then
6703
6704 echo "install prefix            $prefix"
6705 echo "source path               $source_path"
6706 echo "C compiler                $cc"
6707 echo "C library                 $libc_type"
6708 if test "$host_cc" != "$cc"; then
6709     echo "host C compiler           $host_cc"
6710     echo "host C library            $host_libc_type"
6711 fi
6712 echo "ARCH                      $arch ($cpu)"
6713 if test "$build_suffix" != ""; then
6714     echo "build suffix              $build_suffix"
6715 fi
6716 if test "$progs_suffix" != ""; then
6717     echo "progs suffix              $progs_suffix"
6718 fi
6719 if test "$extra_version" != ""; then
6720     echo "version string suffix     $extra_version"
6721 fi
6722 echo "big-endian                ${bigendian-no}"
6723 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6724 if enabled x86; then
6725     echo "standalone assembly       ${x86asm-no}"
6726     echo "x86 assembler             ${x86asmexe}"
6727     echo "MMX enabled               ${mmx-no}"
6728     echo "MMXEXT enabled            ${mmxext-no}"
6729     echo "3DNow! enabled            ${amd3dnow-no}"
6730     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6731     echo "SSE enabled               ${sse-no}"
6732     echo "SSSE3 enabled             ${ssse3-no}"
6733     echo "AESNI enabled             ${aesni-no}"
6734     echo "AVX enabled               ${avx-no}"
6735     echo "AVX2 enabled              ${avx2-no}"
6736     echo "AVX-512 enabled           ${avx512-no}"
6737     echo "XOP enabled               ${xop-no}"
6738     echo "FMA3 enabled              ${fma3-no}"
6739     echo "FMA4 enabled              ${fma4-no}"
6740     echo "i686 features enabled     ${i686-no}"
6741     echo "CMOV is fast              ${fast_cmov-no}"
6742     echo "EBX available             ${ebx_available-no}"
6743     echo "EBP available             ${ebp_available-no}"
6744 fi
6745 if enabled aarch64; then
6746     echo "NEON enabled              ${neon-no}"
6747     echo "VFP enabled               ${vfp-no}"
6748 fi
6749 if enabled arm; then
6750     echo "ARMv5TE enabled           ${armv5te-no}"
6751     echo "ARMv6 enabled             ${armv6-no}"
6752     echo "ARMv6T2 enabled           ${armv6t2-no}"
6753     echo "VFP enabled               ${vfp-no}"
6754     echo "NEON enabled              ${neon-no}"
6755     echo "THUMB enabled             ${thumb-no}"
6756 fi
6757 if enabled mips; then
6758     echo "MIPS FPU enabled          ${mipsfpu-no}"
6759     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6760     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6761     echo "MIPS MSA enabled          ${msa-no}"
6762     echo "LOONGSON MMI enabled      ${mmi-no}"
6763 fi
6764 if enabled ppc; then
6765     echo "AltiVec enabled           ${altivec-no}"
6766     echo "VSX enabled               ${vsx-no}"
6767     echo "POWER8 enabled            ${power8-no}"
6768     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6769     echo "dcbzl available           ${dcbzl-no}"
6770 fi
6771 echo "debug symbols             ${debug-no}"
6772 echo "strip symbols             ${stripping-no}"
6773 echo "optimize for size         ${small-no}"
6774 echo "optimizations             ${optimizations-no}"
6775 echo "static                    ${static-no}"
6776 echo "shared                    ${shared-no}"
6777 echo "postprocessing support    ${postproc-no}"
6778 echo "network support           ${network-no}"
6779 echo "threading support         ${thread_type-no}"
6780 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6781 echo "texi2html enabled         ${texi2html-no}"
6782 echo "perl enabled              ${perl-no}"
6783 echo "pod2man enabled           ${pod2man-no}"
6784 echo "makeinfo enabled          ${makeinfo-no}"
6785 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6786 test -n "$random_seed" &&
6787     echo "random seed               ${random_seed}"
6788 echo
6789
6790 echo "External libraries:"
6791 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6792 echo
6793
6794 echo "External libraries providing hardware acceleration:"
6795 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6796 echo
6797
6798 echo "Libraries:"
6799 print_enabled '' $LIBRARY_LIST | print_in_columns
6800 echo
6801
6802 echo "Programs:"
6803 print_enabled '' $PROGRAM_LIST | print_in_columns
6804 echo
6805
6806 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6807     echo "Enabled ${type}s:"
6808     eval list=\$$(toupper $type)_LIST
6809     print_enabled '_*' $list | print_in_columns
6810     echo
6811 done
6812
6813 if test -n "$ignore_tests"; then
6814     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6815     echo "Ignored FATE tests:"
6816     echo $ignore_tests | print_in_columns
6817     echo
6818 fi
6819
6820 echo "License: $license"
6821
6822 fi # test "$quiet" != "yes"
6823
6824 if test -n "$WARNINGS"; then
6825     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6826     enabled fatal_warnings && exit 1
6827 fi
6828
6829 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6830
6831 esc(){
6832     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6833 }
6834
6835 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6836
6837 enabled stripping || strip="echo skipping strip"
6838 enabled stripping || striptype=""
6839
6840 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6841
6842 cat > ffbuild/config.mak <<EOF
6843 # Automatically generated by configure - do not modify!
6844 ifndef FFMPEG_CONFIG_MAK
6845 FFMPEG_CONFIG_MAK=1
6846 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6847 prefix=$prefix
6848 LIBDIR=\$(DESTDIR)$libdir
6849 SHLIBDIR=\$(DESTDIR)$shlibdir
6850 INCDIR=\$(DESTDIR)$incdir
6851 BINDIR=\$(DESTDIR)$bindir
6852 DATADIR=\$(DESTDIR)$datadir
6853 DOCDIR=\$(DESTDIR)$docdir
6854 MANDIR=\$(DESTDIR)$mandir
6855 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6856 INSTALL_NAME_DIR=$install_name_dir
6857 SRC_PATH=$source_path
6858 SRC_LINK=$source_link
6859 ifndef MAIN_MAKEFILE
6860 SRC_PATH:=\$(SRC_PATH:.%=..%)
6861 endif
6862 CC_IDENT=$cc_ident
6863 ARCH=$arch
6864 INTRINSICS=$intrinsics
6865 EXTERN_PREFIX=$extern_prefix
6866 CC=$cc
6867 CXX=$cxx
6868 AS=$as
6869 OBJCC=$objcc
6870 LD=$ld
6871 DEPCC=$dep_cc
6872 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6873 DEPAS=$as
6874 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6875 X86ASM=$x86asmexe
6876 DEPX86ASM=$x86asmexe
6877 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6878 AR=$ar
6879 ARFLAGS=$arflags
6880 AR_O=$ar_o
6881 AR_CMD=$ar
6882 NM_CMD=$nm
6883 RANLIB=$ranlib
6884 STRIP=$strip
6885 STRIPTYPE=$striptype
6886 NVCC=$nvcc
6887 CP=cp -p
6888 LN_S=$ln_s
6889 CPPFLAGS=$CPPFLAGS
6890 CFLAGS=$CFLAGS
6891 CXXFLAGS=$CXXFLAGS
6892 OBJCFLAGS=$OBJCFLAGS
6893 ASFLAGS=$ASFLAGS
6894 NVCCFLAGS=$nvccflags
6895 AS_C=$AS_C
6896 AS_O=$AS_O
6897 OBJCC_C=$OBJCC_C
6898 OBJCC_E=$OBJCC_E
6899 OBJCC_O=$OBJCC_O
6900 CC_C=$CC_C
6901 CC_E=$CC_E
6902 CC_O=$CC_O
6903 CXX_C=$CXX_C
6904 CXX_O=$CXX_O
6905 NVCC_C=$NVCC_C
6906 NVCC_O=$NVCC_O
6907 LD_O=$LD_O
6908 X86ASM_O=$X86ASM_O
6909 LD_LIB=$LD_LIB
6910 LD_PATH=$LD_PATH
6911 DLLTOOL=$dlltool
6912 WINDRES=$windres
6913 DEPWINDRES=$dep_cc
6914 DOXYGEN=$doxygen
6915 LDFLAGS=$LDFLAGS
6916 LDEXEFLAGS=$LDEXEFLAGS
6917 LDSOFLAGS=$LDSOFLAGS
6918 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6919 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6920 X86ASMFLAGS=$X86ASMFLAGS
6921 BUILDSUF=$build_suffix
6922 PROGSSUF=$progs_suffix
6923 FULLNAME=$FULLNAME
6924 LIBPREF=$LIBPREF
6925 LIBSUF=$LIBSUF
6926 LIBNAME=$LIBNAME
6927 SLIBPREF=$SLIBPREF
6928 SLIBSUF=$SLIBSUF
6929 EXESUF=$EXESUF
6930 EXTRA_VERSION=$extra_version
6931 CCDEP=$CCDEP
6932 CXXDEP=$CXXDEP
6933 CCDEP_FLAGS=$CCDEP_FLAGS
6934 ASDEP=$ASDEP
6935 ASDEP_FLAGS=$ASDEP_FLAGS
6936 X86ASMDEP=$X86ASMDEP
6937 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6938 CC_DEPFLAGS=$CC_DEPFLAGS
6939 AS_DEPFLAGS=$AS_DEPFLAGS
6940 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6941 HOSTCC=$host_cc
6942 HOSTLD=$host_ld
6943 HOSTCFLAGS=$host_cflags
6944 HOSTCPPFLAGS=$host_cppflags
6945 HOSTEXESUF=$HOSTEXESUF
6946 HOSTLDFLAGS=$host_ldflags
6947 HOSTEXTRALIBS=$host_extralibs
6948 DEPHOSTCC=$host_cc
6949 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6950 HOSTCCDEP=$HOSTCCDEP
6951 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6952 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6953 HOSTCC_C=$HOSTCC_C
6954 HOSTCC_O=$HOSTCC_O
6955 HOSTLD_O=$HOSTLD_O
6956 TARGET_EXEC=$target_exec $target_exec_args
6957 TARGET_PATH=$target_path
6958 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6959 CFLAGS-ffplay=${sdl2_cflags}
6960 CFLAGS_HEADERS=$CFLAGS_HEADERS
6961 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6962 EXTRALIBS=$extralibs
6963 COMPAT_OBJS=$compat_objs
6964 INSTALL=$install
6965 LIBTARGET=${LIBTARGET}
6966 SLIBNAME=${SLIBNAME}
6967 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6968 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6969 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6970 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6971 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6972 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6973 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6974 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6975 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6976 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6977 NOREDZONE_FLAGS=$noredzone_flags
6978 LIBFUZZER_PATH=$libfuzzer_path
6979 IGNORE_TESTS=$ignore_tests
6980 EOF
6981
6982 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6983
6984 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6985     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6986 done
6987
6988 cat > $TMPH <<EOF
6989 /* Automatically generated by configure - do not modify! */
6990 #ifndef FFMPEG_CONFIG_H
6991 #define FFMPEG_CONFIG_H
6992 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6993 #define FFMPEG_LICENSE "$(c_escape $license)"
6994 #define CONFIG_THIS_YEAR 2018
6995 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6996 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6997 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6998 #define av_restrict $restrict_keyword
6999 #define EXTERN_PREFIX "${extern_prefix}"
7000 #define EXTERN_ASM ${extern_prefix}
7001 #define BUILDSUF "$build_suffix"
7002 #define SLIBSUF "$SLIBSUF"
7003 #define HAVE_MMX2 HAVE_MMXEXT
7004 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7005 EOF
7006
7007 test -n "$assert_level" &&
7008     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7009
7010 test -n "$malloc_prefix" &&
7011     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7012
7013 if enabled x86asm; then
7014     append config_files $TMPASM
7015     cat > $TMPASM <<EOF
7016 ; Automatically generated by configure - do not modify!
7017 EOF
7018 fi
7019
7020 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7021
7022
7023 mkdir -p doc
7024 mkdir -p tests
7025 mkdir -p tests/api
7026 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7027
7028 print_config ARCH_   "$config_files" $ARCH_LIST
7029 print_config HAVE_   "$config_files" $HAVE_LIST
7030 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7031                                      $CONFIG_EXTRA      \
7032                                      $ALL_COMPONENTS    \
7033
7034 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7035 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7036
7037 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7038 cp_if_changed $TMPH config.h
7039 touch ffbuild/.config
7040
7041 enabled x86asm && cp_if_changed $TMPASM config.asm
7042
7043 cat > $TMPH <<EOF
7044 /* Generated by ffmpeg configure */
7045 #ifndef AVUTIL_AVCONFIG_H
7046 #define AVUTIL_AVCONFIG_H
7047 EOF
7048
7049 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7050
7051 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7052
7053 cp_if_changed $TMPH libavutil/avconfig.h
7054
7055 # generate the lists of enabled components
7056 print_enabled_components(){
7057     file=$1
7058     struct_name=$2
7059     name=$3
7060     shift 3
7061     echo "static const $struct_name * const $name[] = {" > $TMPH
7062     for c in $*; do
7063         if enabled $c; then
7064             case $name in
7065                 indev_list)
7066                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7067                 ;;
7068                 outdev_list)
7069                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7070                 ;;
7071             esac
7072             printf "    &ff_%s,\n" $c >> $TMPH
7073         fi
7074     done
7075     echo "    NULL };" >> $TMPH
7076     cp_if_changed $TMPH $file
7077 }
7078
7079 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7080 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7081 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7082 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7083 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7084 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7085 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7086 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7087
7088 # Settings for pkg-config files
7089
7090 cat > $TMPH <<EOF
7091 # Automatically generated by configure - do not modify!
7092 shared=$shared
7093 build_suffix=$build_suffix
7094 prefix=$prefix
7095 libdir=$libdir
7096 incdir=$incdir
7097 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7098 source_path=${source_path}
7099 LIBPREF=${LIBPREF}
7100 LIBSUF=${LIBSUF}
7101 extralibs_avutil="$avutil_extralibs"
7102 extralibs_avcodec="$avcodec_extralibs"
7103 extralibs_avformat="$avformat_extralibs"
7104 extralibs_avdevice="$avdevice_extralibs"
7105 extralibs_avfilter="$avfilter_extralibs"
7106 extralibs_avresample="$avresample_extralibs"
7107 extralibs_postproc="$postproc_extralibs"
7108 extralibs_swscale="$swscale_extralibs"
7109 extralibs_swresample="$swresample_extralibs"
7110 EOF
7111
7112 for lib in $LIBRARY_LIST; do
7113     lib_deps="$(eval echo \$${lib}_deps)"
7114     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7115 done
7116
7117 cp_if_changed $TMPH ffbuild/config.sh