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   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --disable-jack           disable libjack support [autodetect]
 221   --enable-jni             enable JNI support [no]
 222   --enable-ladspa          enable LADSPA audio filtering [no]
 223   --enable-libass          enable libass subtitles rendering,
 224                            needed for subtitles and ass filter [no]
 225   --enable-libbluray       enable BluRay reading using libbluray [no]
 226   --enable-libbs2b         enable bs2b DSP library [no]
 227   --enable-libcaca         enable textual display using libcaca [no]
 228   --enable-libcelt         enable CELT decoding via libcelt [no]
 229   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 231                            and libraw1394 [no]
 232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 237   --enable-libgme          enable Game Music Emu via libgme [no]
 238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 240   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [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   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 317   --enable-omx             enable OpenMAX IL code [no]
 318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 321   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 324
 325 Toolchain options:
 326   --arch=ARCH              select architecture [$arch]
 327   --cpu=CPU                select the minimum required CPU (affects
 328                            instruction selection, may crash on older CPUs)
 329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 330   --progs-suffix=SUFFIX    program name suffix []
 331   --enable-cross-compile   assume a cross-compiler is used
 332   --sysroot=PATH           root of cross-build tree
 333   --sysinclude=PATH        location of cross-build system headers
 334   --target-os=OS           compiler targets OS [$target_os]
 335   --target-exec=CMD        command to run executables on target
 336   --target-path=DIR        path to view of build directory on target
 337   --target-samples=DIR     path to samples directory on target
 338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 339   --toolchain=NAME         set tool defaults according to NAME
 340   --nm=NM                  use nm tool NM [$nm_default]
 341   --ar=AR                  use archive tool AR [$ar_default]
 342   --as=AS                  use assembler AS [$as_default]
 343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 344   --strip=STRIP            use strip tool STRIP [$strip_default]
 345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 347   --cc=CC                  use C compiler CC [$cc_default]
 348   --cxx=CXX                use C compiler CXX [$cxx_default]
 349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 352   --ld=LD                  use linker LD [$ld_default]
 353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 357   --host-cc=HOSTCC         use host C compiler HOSTCC
 358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 360   --host-ld=HOSTLD         use host linker HOSTLD
 361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 362   --host-libs=HLIBS        use libs HLIBS when linking for host
 363   --host-os=OS             compiler host OS [$target_os]
 364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 369   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 371   --extra-version=STRING   version string suffix []
 372   --optflags=OPTFLAGS      override optimization-related compiler flags
 373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 374   --build-suffix=SUFFIX    library name suffix []
 375   --enable-pic             build position-independent code
 376   --enable-thumb           compile for Thumb instruction set
 377   --enable-lto             use link-time optimization
 378   --env="ENV=override"     override the environment variables
 379
 380 Advanced options (experts only):
 381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 382   --custom-allocator=NAME  use a supported custom allocator
 383   --disable-symver         disable symbol versioning
 384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 385   --disable-safe-bitstream-reader
 386                            disable buffer boundary checking in bitreaders
 387                            (faster, but may crash)
 388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 389
 390 Optimization options (experts only):
 391   --disable-asm            disable all assembly optimizations
 392   --disable-altivec        disable AltiVec optimizations
 393   --disable-vsx            disable VSX optimizations
 394   --disable-power8         disable POWER8 optimizations
 395   --disable-amd3dnow       disable 3DNow! optimizations
 396   --disable-amd3dnowext    disable 3DNow! extended optimizations
 397   --disable-mmx            disable MMX optimizations
 398   --disable-mmxext         disable MMXEXT optimizations
 399   --disable-sse            disable SSE optimizations
 400   --disable-sse2           disable SSE2 optimizations
 401   --disable-sse3           disable SSE3 optimizations
 402   --disable-ssse3          disable SSSE3 optimizations
 403   --disable-sse4           disable SSE4 optimizations
 404   --disable-sse42          disable SSE4.2 optimizations
 405   --disable-avx            disable AVX optimizations
 406   --disable-xop            disable XOP optimizations
 407   --disable-fma3           disable FMA3 optimizations
 408   --disable-fma4           disable FMA4 optimizations
 409   --disable-avx2           disable AVX2 optimizations
 410   --disable-aesni          disable AESNI optimizations
 411   --disable-armv5te        disable armv5te optimizations
 412   --disable-armv6          disable armv6 optimizations
 413   --disable-armv6t2        disable armv6t2 optimizations
 414   --disable-vfp            disable VFP optimizations
 415   --disable-neon           disable NEON optimizations
 416   --disable-inline-asm     disable use of inline assembly
 417   --disable-x86asm         disable use of standalone x86 assembly
 418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 420   --disable-msa            disable MSA optimizations
 421   --disable-mipsfpu        disable floating point MIPS optimizations
 422   --disable-mmi            disable Loongson SIMD optimizations
 423   --disable-fast-unaligned consider unaligned accesses slow
 424
 425 Developer options (useful when working on FFmpeg itself):
 426   --disable-debug          disable debugging symbols
 427   --enable-debug=LEVEL     set the debug level [$debuglevel]
 428   --disable-optimizations  disable compiler optimizations
 429   --enable-extra-warnings  enable more compiler warnings
 430   --disable-stripping      disable stripping of executables and shared libraries
 431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 432                            2 causes a slowdown at runtime.
 433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 435                            leaks and errors, using the specified valgrind binary.
 436                            Cannot be combined with --target-exec
 437   --enable-ftrapv          Trap arithmetic overflows
 438   --samples=PATH           location of test samples for FATE, if not set use
 439                            \$FATE_SAMPLES at make invocation time.
 440   --enable-neon-clobber-test check NEON registers for clobbering (should be
 441                            used only for debugging purposes)
 442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 443                            should be used only for debugging purposes)
 444   --enable-random          randomly enable/disable components
 445   --disable-random
 446   --enable-random=LIST     randomly enable/disable specific components or
 447   --disable-random=LIST    component groups. LIST is a comma-separated list
 448                            of NAME[:PROB] entries where NAME is a component
 449                            (group) and PROB the probability associated with
 450                            NAME (default 0.5).
 451   --random-seed=VALUE      seed value for --enable/disable-random
 452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 453                            (only applies to --disable-optimizations builds)
 454   --enable-osfuzz          Enable building fuzzer tool
 455   --libfuzzer=PATH         path to libfuzzer
 456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 457                            in the name) of tests whose result is ignored
 458   --enable-linux-perf      enable Linux Performance Monitor API
 459
 460 NOTE: Object files are built at the place where configure is launched.
 461 EOF
 462   exit 0
 463 }
 464
 465 quotes='""'
 466 if test -t 1 && which tput >/dev/null 2>&1; then
 467     ncolors=$(tput colors)
 468     if test -n "$ncolors" && test $ncolors -ge 8; then
 469         bold_color=$(tput bold)
 470         warn_color=$(tput setaf 3)
 471         error_color=$(tput setaf 1)
 472         reset_color=$(tput sgr0)
 473     fi
 474     # 72 used instead of 80 since that's the default of pr
 475     ncols=$(tput cols)
 476 fi
 477 : ${ncols:=72}
 478
 479 log(){
 480     echo "$@" >> $logfile
 481 }
 482
 483 log_file(){
 484     log BEGIN $1
 485     pr -n -t $1 >> $logfile
 486     log END $1
 487 }
 488
 489 warn(){
 490     log "WARNING: $*"
 491     WARNINGS="${WARNINGS}WARNING: $*\n"
 492 }
 493
 494 die(){
 495     log "$@"
 496     echo "$error_color$bold_color$@$reset_color"
 497     cat <<EOF
 498
 499 If you think configure made a mistake, make sure you are using the latest
 500 version from Git.  If the latest version fails, report the problem to the
 501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 502 EOF
 503     if disabled logging; then
 504         cat <<EOF
 505 Rerun configure with logging enabled (do not use --disable-logging), and
 506 include the log this produces with your report.
 507 EOF
 508     else
 509         cat <<EOF
 510 Include the log file "$logfile" produced by configure as this will help
 511 solve the problem.
 512 EOF
 513     fi
 514     exit 1
 515 }
 516
 517 # Avoid locale weirdness, besides we really just want to translate ASCII.
 518 toupper(){
 519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 520 }
 521
 522 tolower(){
 523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 524 }
 525
 526 c_escape(){
 527     echo "$*" | sed 's/["\\]/\\\0/g'
 528 }
 529
 530 sh_quote(){
 531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 533     echo "$v"
 534 }
 535
 536 cleanws(){
 537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 538 }
 539
 540 filter(){
 541     pat=$1
 542     shift
 543     for v; do
 544         eval "case $v in $pat) printf '%s ' $v ;; esac"
 545     done
 546 }
 547
 548 filter_out(){
 549     pat=$1
 550     shift
 551     for v; do
 552         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 553     done
 554 }
 555
 556 map(){
 557     m=$1
 558     shift
 559     for v; do eval $m; done
 560 }
 561
 562 add_suffix(){
 563     suffix=$1
 564     shift
 565     for v; do echo ${v}${suffix}; done
 566 }
 567
 568 set_all(){
 569     value=$1
 570     shift
 571     for var in $*; do
 572         eval $var=$value
 573     done
 574 }
 575
 576 set_weak(){
 577     value=$1
 578     shift
 579     for var; do
 580         eval : \${$var:=$value}
 581     done
 582 }
 583
 584 sanitize_var_name(){
 585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 586 }
 587
 588 set_safe(){
 589     var=$1
 590     shift
 591     eval $(sanitize_var_name "$var")='$*'
 592 }
 593
 594 get_safe(){
 595     eval echo \$$(sanitize_var_name "$1")
 596 }
 597
 598 pushvar(){
 599     for pvar in $*; do
 600         eval level=\${${pvar}_level:=0}
 601         eval ${pvar}_${level}="\$$pvar"
 602         eval ${pvar}_level=$(($level+1))
 603     done
 604 }
 605
 606 popvar(){
 607     for pvar in $*; do
 608         eval level=\${${pvar}_level:-0}
 609         test $level = 0 && continue
 610         eval level=$(($level-1))
 611         eval $pvar="\${${pvar}_${level}}"
 612         eval ${pvar}_level=$level
 613         eval unset ${pvar}_${level}
 614     done
 615 }
 616
 617 request(){
 618     for var in $*; do
 619         eval ${var}_requested=yes
 620         eval $var=
 621     done
 622 }
 623
 624 enable(){
 625     set_all yes $*
 626 }
 627
 628 disable(){
 629     set_all no $*
 630 }
 631
 632 enable_weak(){
 633     set_weak yes $*
 634 }
 635
 636 disable_weak(){
 637     set_weak no $*
 638 }
 639
 640 enable_safe(){
 641     for var; do
 642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 643     done
 644 }
 645
 646 disable_safe(){
 647     for var; do
 648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 649     done
 650 }
 651
 652 do_enable_deep(){
 653     for var; do
 654         enabled $var && continue
 655         eval sel="\$${var}_select"
 656         eval sgs="\$${var}_suggest"
 657         pushvar var sgs
 658         enable_deep $sel
 659         popvar sgs
 660         enable_deep_weak $sgs
 661         popvar var
 662     done
 663 }
 664
 665 enable_deep(){
 666     do_enable_deep $*
 667     enable $*
 668 }
 669
 670 enable_deep_weak(){
 671     for var; do
 672         disabled $var && continue
 673         pushvar var
 674         do_enable_deep $var
 675         popvar var
 676         enable_weak $var
 677     done
 678 }
 679
 680 requested(){
 681     test "${1#!}" = "$1" && op='=' || op=!=
 682     eval test "x\$${1#!}_requested" $op "xyes"
 683 }
 684
 685 enabled(){
 686     test "${1#!}" = "$1" && op='=' || op=!=
 687     eval test "x\$${1#!}" $op "xyes"
 688 }
 689
 690 disabled(){
 691     test "${1#!}" = "$1" && op='=' || op=!=
 692     eval test "x\$${1#!}" $op "xno"
 693 }
 694
 695 enabled_all(){
 696     for opt; do
 697         enabled $opt || return 1
 698     done
 699 }
 700
 701 disabled_all(){
 702     for opt; do
 703         disabled $opt || return 1
 704     done
 705 }
 706
 707 enabled_any(){
 708     for opt; do
 709         enabled $opt && return 0
 710     done
 711 }
 712
 713 disabled_any(){
 714     for opt; do
 715         disabled $opt && return 0
 716     done
 717     return 1
 718 }
 719
 720 set_default(){
 721     for opt; do
 722         eval : \${$opt:=\$${opt}_default}
 723     done
 724 }
 725
 726 is_in(){
 727     value=$1
 728     shift
 729     for var in $*; do
 730         [ $var = $value ] && return 0
 731     done
 732     return 1
 733 }
 734
 735 check_deps(){
 736     for cfg; do
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740
 741         eval dep_all="\$${cfg}_deps"
 742         eval dep_any="\$${cfg}_deps_any"
 743         eval dep_con="\$${cfg}_conflict"
 744         eval dep_sel="\$${cfg}_select"
 745         eval dep_sgs="\$${cfg}_suggest"
 746         eval dep_ifa="\$${cfg}_if"
 747         eval dep_ifn="\$${cfg}_if_any"
 748
 749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 752
 753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 759
 760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 761
 762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 763             # filter out library deps, these do not belong in extralibs
 764             is_in $dep $LIBRARY_LIST && continue
 765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 766         done
 767
 768         disable ${cfg}_checking
 769     done
 770 }
 771
 772 print_config(){
 773     pfx=$1
 774     files=$2
 775     shift 2
 776     map 'eval echo "$v \${$v:-no}"' "$@" |
 777     awk "BEGIN { split(\"$files\", files) }
 778         {
 779             c = \"$pfx\" toupper(\$1);
 780             v = \$2;
 781             sub(/yes/, 1, v);
 782             sub(/no/,  0, v);
 783             for (f in files) {
 784                 file = files[f];
 785                 if (file ~ /\\.h\$/) {
 786                     printf(\"#define %s %d\\n\", c, v) >>file;
 787                 } else if (file ~ /\\.asm\$/) {
 788                     printf(\"%%define %s %d\\n\", c, v) >>file;
 789                 } else if (file ~ /\\.mak\$/) {
 790                     n = -v ? \"\" : \"!\";
 791                     printf(\"%s%s=yes\\n\", n, c) >>file;
 792                 } else if (file ~ /\\.texi\$/) {
 793                     pre = -v ? \"\" : \"@c \";
 794                     yesno = \$2;
 795                     c2 = tolower(c);
 796                     gsub(/_/, \"-\", c2);
 797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 798                 }
 799             }
 800         }"
 801 }
 802
 803 print_enabled(){
 804     suf=$1
 805     shift
 806     for v; do
 807         enabled $v && printf "%s\n" ${v%$suf}
 808     done
 809 }
 810
 811 append(){
 812     var=$1
 813     shift
 814     eval "$var=\"\$$var $*\""
 815 }
 816
 817 prepend(){
 818     var=$1
 819     shift
 820     eval "$var=\"$* \$$var\""
 821 }
 822
 823 unique(){
 824     var=$1
 825     uniq_list=""
 826     for tok in $(eval echo \$$var); do
 827         uniq_list="$(filter_out $tok $uniq_list) $tok"
 828     done
 829     eval "$var=\"${uniq_list}\""
 830 }
 831
 832 resolve(){
 833     var=$1
 834     tmpvar=
 835     for entry in $(eval echo \$$var); do
 836         tmpvar="$tmpvar $(eval echo \$${entry})"
 837     done
 838     eval "$var=\"${tmpvar}\""
 839 }
 840
 841 add_cppflags(){
 842     append CPPFLAGS "$@"
 843 }
 844
 845 add_cflags(){
 846     append CFLAGS $($cflags_filter "$@")
 847 }
 848
 849 add_cflags_headers(){
 850     append CFLAGS_HEADERS $($cflags_filter "$@")
 851 }
 852
 853 add_cxxflags(){
 854     append CXXFLAGS $($cflags_filter "$@")
 855 }
 856
 857 add_asflags(){
 858     append ASFLAGS $($asflags_filter "$@")
 859 }
 860
 861 add_objcflags(){
 862     append OBJCFLAGS $($objcflags_filter "$@")
 863 }
 864
 865 add_ldflags(){
 866     append LDFLAGS $($ldflags_filter "$@")
 867 }
 868
 869 add_ldexeflags(){
 870     append LDEXEFLAGS $($ldflags_filter "$@")
 871 }
 872
 873 add_ldlibflags(){
 874     append LDLIBFLAGS $($ldflags_filter "$@")
 875 }
 876
 877 add_stripflags(){
 878     append ASMSTRIPFLAGS "$@"
 879 }
 880
 881 add_extralibs(){
 882     prepend extralibs $($ldflags_filter "$@")
 883 }
 884
 885 add_host_cppflags(){
 886     append host_cppflags "$@"
 887 }
 888
 889 add_host_cflags(){
 890     append host_cflags $($host_cflags_filter "$@")
 891 }
 892
 893 add_host_ldflags(){
 894     append host_ldflags $($host_ldflags_filter "$@")
 895 }
 896
 897 add_compat(){
 898     append compat_objs $1
 899     shift
 900     map 'add_cppflags -D$v' "$@"
 901 }
 902
 903 check_cmd(){
 904     log "$@"
 905     "$@" >> $logfile 2>&1
 906 }
 907
 908 check_stat(){
 909     log check_stat "$@"
 910     stat "$1" >> $logfile 2>&1
 911 }
 912
 913 cc_o(){
 914     eval printf '%s\\n' $CC_O
 915 }
 916
 917 cc_e(){
 918     eval printf '%s\\n' $CC_E
 919 }
 920
 921 check_cc(){
 922     log check_cc "$@"
 923     cat > $TMPC
 924     log_file $TMPC
 925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 926 }
 927
 928 check_cxx(){
 929     log check_cxx "$@"
 930     cat > $TMPCPP
 931     log_file $TMPCPP
 932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 933 }
 934
 935 check_objcc(){
 936     log check_objcc "$@"
 937     cat > $TMPM
 938     log_file $TMPM
 939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 940 }
 941
 942 check_cpp(){
 943     log check_cpp "$@"
 944     cat > $TMPC
 945     log_file $TMPC
 946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 947 }
 948
 949 as_o(){
 950     eval printf '%s\\n' $AS_O
 951 }
 952
 953 check_as(){
 954     log check_as "$@"
 955     cat > $TMPS
 956     log_file $TMPS
 957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 958 }
 959
 960 check_inline_asm(){
 961     log check_inline_asm "$@"
 962     name="$1"
 963     code="$2"
 964     shift 2
 965     disable $name
 966     check_cc "$@" <<EOF && enable $name
 967 void foo(void){ __asm__ volatile($code); }
 968 EOF
 969 }
 970
 971 check_inline_asm_flags(){
 972     log check_inline_asm_flags "$@"
 973     name="$1"
 974     code="$2"
 975     flags=''
 976     shift 2
 977     while [ "$1" != "" ]; do
 978       append flags $1
 979       shift
 980     done;
 981     disable $name
 982     cat > $TMPC <<EOF
 983 void foo(void){ __asm__ volatile($code); }
 984 EOF
 985     log_file $TMPC
 986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 988 }
 989
 990 check_insn(){
 991     log check_insn "$@"
 992     check_inline_asm ${1}_inline "\"$2\""
 993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 994 }
 995
 996 check_x86asm(){
 997     log check_x86asm "$@"
 998     echo "$1" > $TMPS
 999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     header=$1
1111     shift
1112     disable_safe $header
1113     check_cpp "$@" <<EOF && enable_safe $header
1114 #include <$header>
1115 int x;
1116 EOF
1117 }
1118
1119 check_header_objcc(){
1120     log check_header_objcc "$@"
1121     rm -f -- "$TMPO"
1122     header=$1
1123     shift
1124     disable_safe $header
1125     {
1126        echo "#include <$header>"
1127        echo "int main(void) { return 0; }"
1128     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1129 }
1130
1131 check_apple_framework(){
1132     log check_apple_framework "$@"
1133     framework="$1"
1134     name="$(tolower $framework)"
1135     header="${framework}/${framework}.h"
1136     disable $name
1137     check_header_objcc $header &&
1138         enable $name && eval ${name}_extralibs='"-framework $framework"'
1139 }
1140
1141 check_func(){
1142     log check_func "$@"
1143     func=$1
1144     shift
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 extern int $func();
1148 int main(void){ $func(); }
1149 EOF
1150 }
1151
1152 check_complexfunc(){
1153     log check_complexfunc "$@"
1154     func=$1
1155     narg=$2
1156     shift 2
1157     test $narg = 2 && args="f, g" || args="f * I"
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 #include <complex.h>
1161 #include <math.h>
1162 float foo(complex float f, complex float g) { return $func($args); }
1163 int main(void){ return (int) foo; }
1164 EOF
1165 }
1166
1167 check_mathfunc(){
1168     log check_mathfunc "$@"
1169     func=$1
1170     narg=$2
1171     shift 2
1172     test $narg = 2 && args="f, g" || args="f"
1173     disable $func
1174     check_ld "cc" "$@" <<EOF && enable $func
1175 #include <math.h>
1176 float foo(float f, float g) { return $func($args); }
1177 int main(void){ return (int) foo; }
1178 EOF
1179 }
1180
1181 check_func_headers(){
1182     log check_func_headers "$@"
1183     headers=$1
1184     funcs=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "#include <stdint.h>"
1191         for func in $funcs; do
1192             echo "long check_$func(void) { return (long) $func; }"
1193         done
1194         echo "int main(void) { int ret = 0;"
1195         # LTO could optimize out the test functions without this
1196         for func in $funcs; do
1197             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1198         done
1199         echo "return ret; }"
1200     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && eval ${name}_extralibs="\$@"
1259 }
1260
1261 check_lib_cpp(){
1262     log check_lib_cpp "$@"
1263     name="$1"
1264     headers="$2"
1265     classes="$3"
1266     shift 3
1267     disable $name
1268     check_class_headers_cpp "$headers" "$classes" "$@" &&
1269         enable $name && eval ${name}_extralibs="\$@"
1270 }
1271
1272 check_pkg_config(){
1273     log check_pkg_config "$@"
1274     name="$1"
1275     pkg_version="$2"
1276     pkg="${2%% *}"
1277     headers="$3"
1278     funcs="$4"
1279     shift 4
1280     disable $name
1281     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1282     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1283     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1284     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1285         enable $name &&
1286         set_safe "${name}_cflags"    $pkg_cflags &&
1287         set_safe "${name}_extralibs" $pkg_libs
1288 }
1289
1290 check_exec(){
1291     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1292 }
1293
1294 check_exec_crash(){
1295     log check_exec_crash "$@"
1296     code=$(cat)
1297
1298     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1299     # are safe but may not be available everywhere.  Thus we use
1300     # raise(SIGTERM) instead.  The check is run in a subshell so we
1301     # can redirect the "Terminated" message from the shell.  SIGBUS
1302     # is not defined by standard C so it is used conditionally.
1303
1304     (check_exec "$@") >> $logfile 2>&1 <<EOF
1305 #include <signal.h>
1306 static void sighandler(int sig){
1307     raise(SIGTERM);
1308 }
1309 int foo(void){
1310     $code
1311 }
1312 int (*func_ptr)(void) = foo;
1313 int main(void){
1314     signal(SIGILL, sighandler);
1315     signal(SIGFPE, sighandler);
1316     signal(SIGSEGV, sighandler);
1317 #ifdef SIGBUS
1318     signal(SIGBUS, sighandler);
1319 #endif
1320     return func_ptr();
1321 }
1322 EOF
1323 }
1324
1325 check_type(){
1326     log check_type "$@"
1327     headers=$1
1328     type=$2
1329     shift 2
1330     disable_safe "$type"
1331     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1332 }
1333
1334 check_struct(){
1335     log check_struct "$@"
1336     headers=$1
1337     struct=$2
1338     member=$3
1339     shift 3
1340     disable_safe "${struct}_${member}"
1341     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1342         enable_safe "${struct}_${member}"
1343 }
1344
1345 check_builtin(){
1346     log check_builtin "$@"
1347     name=$1
1348     headers=$2
1349     builtin=$3
1350     shift 3
1351     disable "$name"
1352     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1353 }
1354
1355 check_compile_assert(){
1356     log check_compile_assert "$@"
1357     name=$1
1358     headers=$2
1359     condition=$3
1360     shift 3
1361     disable "$name"
1362     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1363 }
1364
1365 require(){
1366     log require "$@"
1367     name_version="$1"
1368     name="${1%% *}"
1369     headers="$2"
1370     func="$3"
1371     shift 3
1372     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1373 }
1374
1375 require_cpp(){
1376     name="$1"
1377     headers="$2"
1378     classes="$3"
1379     shift 3
1380     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1381 }
1382
1383 require_header(){
1384     log require "$@"
1385     header="$1"
1386     shift
1387     check_header "$header" "$@" || die "ERROR: $header header not found"
1388 }
1389
1390 require_cpp_condition(){
1391     log require "$@"
1392     header="$1"
1393     condition="$2"
1394     shift 2
1395     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1396 }
1397
1398 use_pkg_config(){
1399     log use_pkg_config "$@"
1400     name="$1"
1401     check_pkg_config "$@" || return 1
1402     add_cflags    $(get_safe "${name}_cflags")
1403 }
1404
1405 require_pkg_config(){
1406     log require_pkg_config "$@"
1407     pkg_version="$2"
1408     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1409 }
1410
1411 hostcc_e(){
1412     eval printf '%s\\n' $HOSTCC_E
1413 }
1414
1415 hostcc_o(){
1416     eval printf '%s\\n' $HOSTCC_O
1417 }
1418
1419 check_host_cc(){
1420     log check_host_cc "$@"
1421     cat > $TMPC
1422     log_file $TMPC
1423     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1424 }
1425
1426 check_host_cpp(){
1427     log check_host_cpp "$@"
1428     cat > $TMPC
1429     log_file $TMPC
1430     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1431 }
1432
1433 check_host_cppflags(){
1434     log check_host_cppflags "$@"
1435     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1436 #include <stdlib.h>
1437 EOF
1438 }
1439
1440 check_host_cflags(){
1441     log check_host_cflags "$@"
1442     set -- $($host_cflags_filter "$@")
1443     check_host_cc "$@" <<EOF && append host_cflags "$@"
1444 int x;
1445 EOF
1446 }
1447
1448 check_host_cpp_condition(){
1449     log check_host_cpp_condition "$@"
1450     header=$1
1451     condition=$2
1452     shift 2
1453     check_host_cpp "$@" <<EOF
1454 #include <$header>
1455 #if !($condition)
1456 #error "unsatisfied condition: $condition"
1457 #endif
1458 EOF
1459 }
1460
1461 cp_if_changed(){
1462     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1463     mkdir -p "$(dirname $2)"
1464     cp -f "$1" "$2"
1465 }
1466
1467 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1468 # system-dependent things.
1469
1470 AVCODEC_COMPONENTS="
1471     bsfs
1472     decoders
1473     encoders
1474     hwaccels
1475     parsers
1476 "
1477
1478 AVDEVICE_COMPONENTS="
1479     indevs
1480     outdevs
1481 "
1482
1483 AVFILTER_COMPONENTS="
1484     filters
1485 "
1486
1487 AVFORMAT_COMPONENTS="
1488     demuxers
1489     muxers
1490     protocols
1491 "
1492
1493 AVRESAMPLE_COMPONENTS=""
1494
1495 AVUTIL_COMPONENTS=""
1496
1497 COMPONENT_LIST="
1498     $AVCODEC_COMPONENTS
1499     $AVDEVICE_COMPONENTS
1500     $AVFILTER_COMPONENTS
1501     $AVFORMAT_COMPONENTS
1502     $AVRESAMPLE_COMPONENTS
1503     $AVUTIL_COMPONENTS
1504 "
1505
1506 EXAMPLE_LIST="
1507     avio_dir_cmd_example
1508     avio_reading_example
1509     decode_audio_example
1510     decode_video_example
1511     demuxing_decoding_example
1512     encode_audio_example
1513     encode_video_example
1514     extract_mvs_example
1515     filter_audio_example
1516     filtering_audio_example
1517     filtering_video_example
1518     http_multiclient_example
1519     hw_decode_example
1520     metadata_example
1521     muxing_example
1522     qsvdec_example
1523     remuxing_example
1524     resampling_audio_example
1525     scaling_video_example
1526     transcode_aac_example
1527     transcoding_example
1528 "
1529
1530 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1531     alsa
1532     appkit
1533     avfoundation
1534     bzlib
1535     coreimage
1536     iconv
1537     jack
1538     libxcb
1539     libxcb_shm
1540     libxcb_shape
1541     libxcb_xfixes
1542     lzma
1543     schannel
1544     sdl2
1545     securetransport
1546     sndio
1547     xlib
1548     zlib
1549 "
1550
1551 EXTERNAL_LIBRARY_GPL_LIST="
1552     avisynth
1553     frei0r
1554     libcdio
1555     librubberband
1556     libvidstab
1557     libx264
1558     libx265
1559     libxavs
1560     libxvid
1561 "
1562
1563 EXTERNAL_LIBRARY_NONFREE_LIST="
1564     decklink
1565     libndi_newtek
1566     libfdk_aac
1567     openssl
1568 "
1569
1570 EXTERNAL_LIBRARY_VERSION3_LIST="
1571     gmp
1572     libopencore_amrnb
1573     libopencore_amrwb
1574     libvo_amrwbenc
1575     rkmpp
1576 "
1577
1578 EXTERNAL_LIBRARY_GPLV3_LIST="
1579     libsmbclient
1580 "
1581
1582 EXTERNAL_LIBRARY_LIST="
1583     $EXTERNAL_LIBRARY_GPL_LIST
1584     $EXTERNAL_LIBRARY_NONFREE_LIST
1585     $EXTERNAL_LIBRARY_VERSION3_LIST
1586     $EXTERNAL_LIBRARY_GPLV3_LIST
1587     chromaprint
1588     gcrypt
1589     gnutls
1590     jni
1591     ladspa
1592     libass
1593     libbluray
1594     libbs2b
1595     libcaca
1596     libcelt
1597     libdc1394
1598     libdrm
1599     libflite
1600     libfontconfig
1601     libfreetype
1602     libfribidi
1603     libgme
1604     libgsm
1605     libiec61883
1606     libilbc
1607     libkvazaar
1608     libmodplug
1609     libmp3lame
1610     libmysofa
1611     libopencv
1612     libopenh264
1613     libopenjpeg
1614     libopenmpt
1615     libopus
1616     libpulse
1617     librsvg
1618     librtmp
1619     libshine
1620     libsmbclient
1621     libsnappy
1622     libsoxr
1623     libspeex
1624     libssh
1625     libtesseract
1626     libtheora
1627     libtwolame
1628     libv4l2
1629     libvmaf
1630     libvorbis
1631     libvpx
1632     libwavpack
1633     libwebp
1634     libxml2
1635     libzimg
1636     libzmq
1637     libzvbi
1638     mediacodec
1639     openal
1640     opencl
1641     opengl
1642 "
1643
1644 HWACCEL_AUTODETECT_LIBRARY_LIST="
1645     audiotoolbox
1646     crystalhd
1647     cuda
1648     cuvid
1649     d3d11va
1650     dxva2
1651     nvenc
1652     vaapi
1653     vda
1654     vdpau
1655     videotoolbox
1656     v4l2_m2m
1657     xvmc
1658 "
1659
1660 # catchall list of things that require external libs to link
1661 EXTRALIBS_LIST="
1662     cpu_init
1663     cws2fws
1664 "
1665
1666 HWACCEL_LIBRARY_NONFREE_LIST="
1667     cuda_sdk
1668     libnpp
1669 "
1670
1671 HWACCEL_LIBRARY_LIST="
1672     $HWACCEL_LIBRARY_NONFREE_LIST
1673     libmfx
1674     mmal
1675     omx
1676 "
1677
1678 DOCUMENT_LIST="
1679     doc
1680     htmlpages
1681     manpages
1682     podpages
1683     txtpages
1684 "
1685
1686 FEATURE_LIST="
1687     ftrapv
1688     gray
1689     hardcoded_tables
1690     omx_rpi
1691     runtime_cpudetect
1692     safe_bitstream_reader
1693     shared
1694     small
1695     static
1696     swscale_alpha
1697 "
1698
1699 LIBRARY_LIST="
1700     avcodec
1701     avdevice
1702     avfilter
1703     avformat
1704     avresample
1705     avutil
1706     postproc
1707     swresample
1708     swscale
1709 "
1710
1711 LICENSE_LIST="
1712     gpl
1713     nonfree
1714     version3
1715 "
1716
1717 PROGRAM_LIST="
1718     ffplay
1719     ffprobe
1720     ffserver
1721     ffmpeg
1722 "
1723
1724 SUBSYSTEM_LIST="
1725     dct
1726     dwt
1727     error_resilience
1728     faan
1729     fast_unaligned
1730     fft
1731     lsp
1732     lzo
1733     mdct
1734     pixelutils
1735     network
1736     rdft
1737 "
1738
1739 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1740 CONFIG_LIST="
1741     $DOCUMENT_LIST
1742     $EXAMPLE_LIST
1743     $EXTERNAL_LIBRARY_LIST
1744     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1745     $HWACCEL_LIBRARY_LIST
1746     $HWACCEL_AUTODETECT_LIBRARY_LIST
1747     $FEATURE_LIST
1748     $LICENSE_LIST
1749     $LIBRARY_LIST
1750     $PROGRAM_LIST
1751     $SUBSYSTEM_LIST
1752     autodetect
1753     fontconfig
1754     linux_perf
1755     memory_poisoning
1756     neon_clobber_test
1757     ossfuzz
1758     pic
1759     thumb
1760     valgrind_backtrace
1761     xmm_clobber_test
1762     $COMPONENT_LIST
1763 "
1764
1765 THREADS_LIST="
1766     pthreads
1767     os2threads
1768     w32threads
1769 "
1770
1771 ATOMICS_LIST="
1772     atomics_gcc
1773     atomics_suncc
1774     atomics_win32
1775 "
1776
1777 AUTODETECT_LIBS="
1778     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1779     $HWACCEL_AUTODETECT_LIBRARY_LIST
1780     $THREADS_LIST
1781 "
1782
1783 ARCH_LIST="
1784     aarch64
1785     alpha
1786     arm
1787     avr32
1788     avr32_ap
1789     avr32_uc
1790     bfin
1791     ia64
1792     m68k
1793     mips
1794     mips64
1795     parisc
1796     ppc
1797     ppc64
1798     s390
1799     sh4
1800     sparc
1801     sparc64
1802     tilegx
1803     tilepro
1804     tomi
1805     x86
1806     x86_32
1807     x86_64
1808 "
1809
1810 ARCH_EXT_LIST_ARM="
1811     armv5te
1812     armv6
1813     armv6t2
1814     armv8
1815     neon
1816     vfp
1817     vfpv3
1818     setend
1819 "
1820
1821 ARCH_EXT_LIST_MIPS="
1822     mipsfpu
1823     mips32r2
1824     mips32r5
1825     mips64r2
1826     mips32r6
1827     mips64r6
1828     mipsdsp
1829     mipsdspr2
1830     msa
1831 "
1832
1833 ARCH_EXT_LIST_LOONGSON="
1834     loongson2
1835     loongson3
1836     mmi
1837 "
1838
1839 ARCH_EXT_LIST_X86_SIMD="
1840     aesni
1841     amd3dnow
1842     amd3dnowext
1843     avx
1844     avx2
1845     fma3
1846     fma4
1847     mmx
1848     mmxext
1849     sse
1850     sse2
1851     sse3
1852     sse4
1853     sse42
1854     ssse3
1855     xop
1856 "
1857
1858 ARCH_EXT_LIST_PPC="
1859     altivec
1860     dcbzl
1861     ldbrx
1862     power8
1863     ppc4xx
1864     vsx
1865 "
1866
1867 ARCH_EXT_LIST_X86="
1868     $ARCH_EXT_LIST_X86_SIMD
1869     cpunop
1870     i686
1871 "
1872
1873 ARCH_EXT_LIST="
1874     $ARCH_EXT_LIST_ARM
1875     $ARCH_EXT_LIST_PPC
1876     $ARCH_EXT_LIST_X86
1877     $ARCH_EXT_LIST_MIPS
1878     $ARCH_EXT_LIST_LOONGSON
1879 "
1880
1881 ARCH_FEATURES="
1882     aligned_stack
1883     fast_64bit
1884     fast_clz
1885     fast_cmov
1886     local_aligned_8
1887     local_aligned_16
1888     local_aligned_32
1889     simd_align_16
1890     simd_align_32
1891 "
1892
1893 BUILTIN_LIST="
1894     atomic_cas_ptr
1895     machine_rw_barrier
1896     MemoryBarrier
1897     mm_empty
1898     rdtsc
1899     sarestart
1900     sem_timedwait
1901     sync_val_compare_and_swap
1902 "
1903 HAVE_LIST_CMDLINE="
1904     inline_asm
1905     symver
1906     x86asm
1907 "
1908
1909 HAVE_LIST_PUB="
1910     bigendian
1911     fast_unaligned
1912 "
1913
1914 HEADERS_LIST="
1915     altivec_h
1916     arpa_inet_h
1917     asm_types_h
1918     cdio_paranoia_h
1919     cdio_paranoia_paranoia_h
1920     cuda_h
1921     d3d11_h
1922     dispatch_dispatch_h
1923     dev_bktr_ioctl_bt848_h
1924     dev_bktr_ioctl_meteor_h
1925     dev_ic_bt8xx_h
1926     dev_video_bktr_ioctl_bt848_h
1927     dev_video_meteor_ioctl_meteor_h
1928     direct_h
1929     dirent_h
1930     dlfcn_h
1931     dxgidebug_h
1932     dxva_h
1933     ES2_gl_h
1934     gsm_h
1935     io_h
1936     mach_mach_time_h
1937     machine_ioctl_bt848_h
1938     machine_ioctl_meteor_h
1939     malloc_h
1940     opencv2_core_core_c_h
1941     openjpeg_2_3_openjpeg_h
1942     openjpeg_2_2_openjpeg_h
1943     openjpeg_2_1_openjpeg_h
1944     openjpeg_2_0_openjpeg_h
1945     openjpeg_1_5_openjpeg_h
1946     OpenGL_gl3_h
1947     poll_h
1948     soundcard_h
1949     stdatomic_h
1950     sys_mman_h
1951     sys_param_h
1952     sys_resource_h
1953     sys_select_h
1954     sys_soundcard_h
1955     sys_time_h
1956     sys_un_h
1957     sys_videoio_h
1958     termios_h
1959     udplite_h
1960     unistd_h
1961     valgrind_valgrind_h
1962     windows_h
1963     winsock2_h
1964 "
1965
1966 INTRINSICS_LIST="
1967     intrinsics_neon
1968 "
1969
1970 COMPLEX_FUNCS="
1971     cabs
1972     cexp
1973 "
1974
1975 MATH_FUNCS="
1976     atanf
1977     atan2f
1978     cbrt
1979     cbrtf
1980     copysign
1981     cosf
1982     erf
1983     exp2
1984     exp2f
1985     expf
1986     hypot
1987     isfinite
1988     isinf
1989     isnan
1990     ldexpf
1991     llrint
1992     llrintf
1993     log2
1994     log2f
1995     log10f
1996     lrint
1997     lrintf
1998     powf
1999     rint
2000     round
2001     roundf
2002     sinf
2003     trunc
2004     truncf
2005 "
2006
2007 SYSTEM_FUNCS="
2008     access
2009     aligned_malloc
2010     arc4random
2011     clock_gettime
2012     closesocket
2013     CommandLineToArgvW
2014     CoTaskMemFree
2015     CryptGenRandom
2016     fcntl
2017     flt_lim
2018     fork
2019     getaddrinfo
2020     gethrtime
2021     getopt
2022     GetProcessAffinityMask
2023     GetProcessMemoryInfo
2024     GetProcessTimes
2025     getrusage
2026     GetSystemTimeAsFileTime
2027     gettimeofday
2028     glob
2029     glXGetProcAddress
2030     gmtime_r
2031     inet_aton
2032     isatty
2033     jack_port_get_latency_range
2034     kbhit
2035     LoadLibrary
2036     localtime_r
2037     lstat
2038     lzo1x_999_compress
2039     mach_absolute_time
2040     MapViewOfFile
2041     memalign
2042     mkstemp
2043     mmap
2044     mprotect
2045     nanosleep
2046     PeekNamedPipe
2047     posix_memalign
2048     pthread_cancel
2049     sched_getaffinity
2050     SetConsoleTextAttribute
2051     SetConsoleCtrlHandler
2052     setmode
2053     setrlimit
2054     Sleep
2055     strerror_r
2056     sysconf
2057     sysctl
2058     usleep
2059     UTGetOSTypeFromString
2060     VirtualAlloc
2061     wglGetProcAddress
2062 "
2063
2064 TOOLCHAIN_FEATURES="
2065     as_dn_directive
2066     as_fpu_directive
2067     as_func
2068     as_object_arch
2069     asm_mod_q
2070     attribute_may_alias
2071     attribute_packed
2072     blocks_extension
2073     ebp_available
2074     ebx_available
2075     gnu_as
2076     gnu_windres
2077     ibm_asm
2078     inline_asm_direct_symbol_refs
2079     inline_asm_labels
2080     inline_asm_nonlocal_labels
2081     pragma_deprecated
2082     rsync_contimeout
2083     symver_asm_label
2084     symver_gnu_asm
2085     vfp_args
2086     xform_asm
2087     xmm_clobbers
2088 "
2089
2090 TYPES_LIST="
2091     CONDITION_VARIABLE_Ptr
2092     kCMVideoCodecType_HEVC
2093     socklen_t
2094     struct_addrinfo
2095     struct_group_source_req
2096     struct_ip_mreq_source
2097     struct_ipv6_mreq
2098     struct_msghdr_msg_flags
2099     struct_pollfd
2100     struct_rusage_ru_maxrss
2101     struct_sctp_event_subscribe
2102     struct_sockaddr_in6
2103     struct_sockaddr_sa_len
2104     struct_sockaddr_storage
2105     struct_stat_st_mtim_tv_nsec
2106     struct_v4l2_frmivalenum_discrete
2107 "
2108
2109 HAVE_LIST="
2110     $ARCH_EXT_LIST
2111     $(add_suffix _external $ARCH_EXT_LIST)
2112     $(add_suffix _inline   $ARCH_EXT_LIST)
2113     $ARCH_FEATURES
2114     $ATOMICS_LIST
2115     $BUILTIN_LIST
2116     $COMPLEX_FUNCS
2117     $HAVE_LIST_CMDLINE
2118     $HAVE_LIST_PUB
2119     $HEADERS_LIST
2120     $INTRINSICS_LIST
2121     $MATH_FUNCS
2122     $SYSTEM_FUNCS
2123     $THREADS_LIST
2124     $TOOLCHAIN_FEATURES
2125     $TYPES_LIST
2126     atomics_native
2127     dos_paths
2128     libc_msvcrt
2129     makeinfo
2130     makeinfo_html
2131     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2132     perl
2133     pod2man
2134     section_data_rel_ro
2135     texi2html
2136     threads
2137     uwp
2138     vaapi_drm
2139     vaapi_x11
2140     vdpau_x11
2141     winrt
2142 "
2143
2144 # options emitted with CONFIG_ prefix but not available on the command line
2145 CONFIG_EXTRA="
2146     aandcttables
2147     ac3dsp
2148     audio_frame_queue
2149     audiodsp
2150     blockdsp
2151     bswapdsp
2152     cabac
2153     cbs
2154     cbs_h264
2155     cbs_h265
2156     cbs_mpeg2
2157     dirac_parse
2158     dvprofile
2159     exif
2160     faandct
2161     faanidct
2162     fdctdsp
2163     flacdsp
2164     fmtconvert
2165     frame_thread_encoder
2166     g722dsp
2167     golomb
2168     gplv3
2169     h263dsp
2170     h264chroma
2171     h264dsp
2172     h264parse
2173     h264pred
2174     h264qpel
2175     hevcparse
2176     hpeldsp
2177     huffman
2178     huffyuvdsp
2179     huffyuvencdsp
2180     idctdsp
2181     iirfilter
2182     mdct15
2183     intrax8
2184     iso_media
2185     ividsp
2186     jpegtables
2187     lgplv3
2188     libx262
2189     llauddsp
2190     llviddsp
2191     llvidencdsp
2192     lpc
2193     lzf
2194     me_cmp
2195     mpeg_er
2196     mpegaudio
2197     mpegaudiodsp
2198     mpegaudioheader
2199     mpegvideo
2200     mpegvideoenc
2201     mss34dsp
2202     pixblockdsp
2203     qpeldsp
2204     qsv
2205     qsvdec
2206     qsvenc
2207     rangecoder
2208     riffdec
2209     riffenc
2210     rtpdec
2211     rtpenc_chain
2212     rv34dsp
2213     sinewin
2214     snappy
2215     srtp
2216     startcode
2217     texturedsp
2218     texturedspenc
2219     tpeldsp
2220     vaapi_1
2221     vaapi_encode
2222     vc1dsp
2223     videodsp
2224     vp3dsp
2225     vp56dsp
2226     vp8dsp
2227     wma_freqs
2228     wmv2dsp
2229 "
2230
2231 CMDLINE_SELECT="
2232     $ARCH_EXT_LIST
2233     $CONFIG_LIST
2234     $HAVE_LIST_CMDLINE
2235     $THREADS_LIST
2236     asm
2237     cross_compile
2238     debug
2239     extra_warnings
2240     logging
2241     lto
2242     optimizations
2243     rpath
2244     stripping
2245 "
2246
2247 PATHS_LIST="
2248     bindir
2249     datadir
2250     docdir
2251     incdir
2252     libdir
2253     mandir
2254     pkgconfigdir
2255     prefix
2256     shlibdir
2257     install_name_dir
2258 "
2259
2260 CMDLINE_SET="
2261     $PATHS_LIST
2262     ar
2263     arch
2264     as
2265     assert_level
2266     build_suffix
2267     cc
2268     objcc
2269     cpu
2270     cross_prefix
2271     custom_allocator
2272     cxx
2273     dep_cc
2274     doxygen
2275     env
2276     extra_version
2277     gas
2278     host_cc
2279     host_cflags
2280     host_extralibs
2281     host_ld
2282     host_ldflags
2283     host_os
2284     ignore_tests
2285     install
2286     ld
2287     ln_s
2288     logfile
2289     malloc_prefix
2290     nm
2291     optflags
2292     nvccflags
2293     pkg_config
2294     pkg_config_flags
2295     progs_suffix
2296     random_seed
2297     ranlib
2298     samples
2299     strip
2300     sws_max_filter_size
2301     sysinclude
2302     sysroot
2303     target_exec
2304     target_os
2305     target_path
2306     target_samples
2307     tempprefix
2308     toolchain
2309     valgrind
2310     x86asmexe
2311 "
2312
2313 CMDLINE_APPEND="
2314     extra_cflags
2315     extra_cxxflags
2316     extra_objcflags
2317     host_cppflags
2318 "
2319
2320 # code dependency declarations
2321
2322 # architecture extensions
2323
2324 armv5te_deps="arm"
2325 armv6_deps="arm"
2326 armv6t2_deps="arm"
2327 armv8_deps="aarch64"
2328 neon_deps_any="aarch64 arm"
2329 intrinsics_neon_deps="neon"
2330 vfp_deps_any="aarch64 arm"
2331 vfpv3_deps="vfp"
2332 setend_deps="arm"
2333
2334 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2335
2336 loongson2_deps="mips"
2337 loongson3_deps="mips"
2338 mipsfpu_deps="mips"
2339 mipsdsp_deps="mips"
2340 mipsdspr2_deps="mips"
2341 mips32r2_deps="mips"
2342 mips32r5_deps="mips"
2343 mips32r6_deps="mips"
2344 mips64r2_deps="mips"
2345 mips64r6_deps="mips"
2346 msa_deps="mipsfpu"
2347 mmi_deps="mips"
2348
2349 altivec_deps="ppc"
2350 dcbzl_deps="ppc"
2351 ldbrx_deps="ppc"
2352 ppc4xx_deps="ppc"
2353 vsx_deps="altivec"
2354 power8_deps="vsx"
2355
2356 cpunop_deps="i686"
2357 x86_64_select="i686"
2358 x86_64_suggest="fast_cmov"
2359
2360 amd3dnow_deps="mmx"
2361 amd3dnowext_deps="amd3dnow"
2362 i686_deps="x86"
2363 mmx_deps="x86"
2364 mmxext_deps="mmx"
2365 sse_deps="mmxext"
2366 sse2_deps="sse"
2367 sse3_deps="sse2"
2368 ssse3_deps="sse3"
2369 sse4_deps="ssse3"
2370 sse42_deps="sse4"
2371 aesni_deps="sse42"
2372 avx_deps="sse42"
2373 xop_deps="avx"
2374 fma3_deps="avx"
2375 fma4_deps="avx"
2376 avx2_deps="avx"
2377
2378 mmx_external_deps="x86asm"
2379 mmx_inline_deps="inline_asm"
2380 mmx_suggest="mmx_external mmx_inline"
2381
2382 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2383     eval dep=\$${ext}_deps
2384     eval ${ext}_external_deps='"${dep}_external"'
2385     eval ${ext}_inline_deps='"${dep}_inline"'
2386     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2387 done
2388
2389 aligned_stack_if_any="aarch64 ppc x86"
2390 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2391 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2392 fast_unaligned_if_any="aarch64 ppc x86"
2393 simd_align_16_if_any="altivec neon sse"
2394 simd_align_32_if_any="avx"
2395
2396 # system capabilities
2397 symver_if_any="symver_asm_label symver_gnu_asm"
2398 valgrind_backtrace_conflict="optimizations"
2399 valgrind_backtrace_deps="valgrind_valgrind_h"
2400
2401 # threading support
2402 atomics_gcc_if="sync_val_compare_and_swap"
2403 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2404 atomics_win32_if="MemoryBarrier"
2405 atomics_native_if_any="$ATOMICS_LIST"
2406 w32threads_deps="atomics_native"
2407 threads_if_any="$THREADS_LIST"
2408
2409 # subsystems
2410 cbs_h264_select="cbs golomb"
2411 cbs_h265_select="cbs golomb"
2412 cbs_mpeg2_select="cbs"
2413 dct_select="rdft"
2414 dirac_parse_select="golomb"
2415 error_resilience_select="me_cmp"
2416 faandct_deps="faan fdctdsp"
2417 faanidct_deps="faan idctdsp"
2418 h264dsp_select="startcode"
2419 hevcparse_select="golomb"
2420 frame_thread_encoder_deps="encoders threads"
2421 intrax8_select="blockdsp idctdsp"
2422 mdct_select="fft"
2423 mdct15_select="fft"
2424 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2425 mpeg_er_select="error_resilience"
2426 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2427 mpegaudiodsp_select="dct"
2428 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2429 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2430 vc1dsp_select="h264chroma qpeldsp startcode"
2431 rdft_select="fft"
2432
2433 # decoders / encoders
2434 aac_decoder_select="mdct15 mdct sinewin"
2435 aac_fixed_decoder_select="mdct sinewin"
2436 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2437 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2438 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2439 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2440 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2441 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2442 adpcm_g722_decoder_select="g722dsp"
2443 adpcm_g722_encoder_select="g722dsp"
2444 aic_decoder_select="golomb idctdsp"
2445 alac_encoder_select="lpc"
2446 als_decoder_select="bswapdsp"
2447 amrnb_decoder_select="lsp"
2448 amrwb_decoder_select="lsp"
2449 amv_decoder_select="sp5x_decoder exif"
2450 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2451 ape_decoder_select="bswapdsp llauddsp"
2452 apng_decoder_select="zlib"
2453 apng_encoder_select="llvidencdsp zlib"
2454 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2455 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2456 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2457 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2458 atrac1_decoder_select="mdct sinewin"
2459 atrac3_decoder_select="mdct"
2460 atrac3p_decoder_select="mdct sinewin"
2461 avrn_decoder_select="exif jpegtables"
2462 bink_decoder_select="blockdsp hpeldsp"
2463 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2464 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2465 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2466 clearvideo_decoder_select="idctdsp"
2467 cllc_decoder_select="bswapdsp"
2468 comfortnoise_encoder_select="lpc"
2469 cook_decoder_select="audiodsp mdct sinewin"
2470 cscd_decoder_select="lzo"
2471 cscd_decoder_suggest="zlib"
2472 dca_decoder_select="mdct"
2473 dds_decoder_select="texturedsp"
2474 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2475 dnxhd_decoder_select="blockdsp idctdsp"
2476 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2477 dolby_e_decoder_select="mdct"
2478 dvvideo_decoder_select="dvprofile idctdsp"
2479 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2480 dxa_decoder_select="zlib"
2481 dxv_decoder_select="lzf texturedsp"
2482 eac3_decoder_select="ac3_decoder"
2483 eac3_encoder_select="ac3_encoder"
2484 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2485 eatgq_decoder_select="aandcttables"
2486 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2487 exr_decoder_select="zlib"
2488 ffv1_decoder_select="rangecoder"
2489 ffv1_encoder_select="rangecoder"
2490 ffvhuff_decoder_select="huffyuv_decoder"
2491 ffvhuff_encoder_select="huffyuv_encoder"
2492 fic_decoder_select="golomb"
2493 flac_decoder_select="flacdsp"
2494 flac_encoder_select="bswapdsp flacdsp lpc"
2495 flashsv2_decoder_select="zlib"
2496 flashsv2_encoder_select="zlib"
2497 flashsv_decoder_select="zlib"
2498 flashsv_encoder_select="zlib"
2499 flv_decoder_select="h263_decoder"
2500 flv_encoder_select="h263_encoder"
2501 fourxm_decoder_select="blockdsp bswapdsp"
2502 fraps_decoder_select="bswapdsp huffman"
2503 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2504 g729_decoder_select="audiodsp"
2505 h261_decoder_select="mpegvideo"
2506 h261_encoder_select="aandcttables mpegvideoenc"
2507 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2508 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2509 h263i_decoder_select="h263_decoder"
2510 h263p_decoder_select="h263_decoder"
2511 h263p_encoder_select="h263_encoder"
2512 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2513 h264_decoder_suggest="error_resilience"
2514 hap_decoder_select="snappy texturedsp"
2515 hap_encoder_deps="libsnappy"
2516 hap_encoder_select="texturedspenc"
2517 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2518 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2519 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2520 iac_decoder_select="imc_decoder"
2521 imc_decoder_select="bswapdsp fft mdct sinewin"
2522 indeo3_decoder_select="hpeldsp"
2523 indeo4_decoder_select="ividsp"
2524 indeo5_decoder_select="ividsp"
2525 interplay_video_decoder_select="hpeldsp"
2526 jpegls_decoder_select="mjpeg_decoder"
2527 jv_decoder_select="blockdsp"
2528 lagarith_decoder_select="llviddsp"
2529 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2530 magicyuv_decoder_select="llviddsp"
2531 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2532 metasound_decoder_select="lsp mdct sinewin"
2533 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2534 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2535 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2536 mjpegb_decoder_select="mjpeg_decoder"
2537 mlp_decoder_select="mlp_parser"
2538 mlp_encoder_select="lpc"
2539 motionpixels_decoder_select="bswapdsp"
2540 mp1_decoder_select="mpegaudio"
2541 mp1float_decoder_select="mpegaudio"
2542 mp2_decoder_select="mpegaudio"
2543 mp2float_decoder_select="mpegaudio"
2544 mp3_decoder_select="mpegaudio"
2545 mp3adu_decoder_select="mpegaudio"
2546 mp3adufloat_decoder_select="mpegaudio"
2547 mp3float_decoder_select="mpegaudio"
2548 mp3on4_decoder_select="mpegaudio"
2549 mp3on4float_decoder_select="mpegaudio"
2550 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2551 mpc8_decoder_select="mpegaudiodsp"
2552 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2553 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2554 mpegvideo_decoder_select="mpegvideo"
2555 mpeg1video_decoder_select="mpegvideo"
2556 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2557 mpeg2video_decoder_select="mpegvideo"
2558 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2559 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2560 mpeg4_encoder_select="h263_encoder"
2561 msa1_decoder_select="mss34dsp"
2562 mscc_decoder_select="zlib"
2563 msmpeg4v1_decoder_select="h263_decoder"
2564 msmpeg4v2_decoder_select="h263_decoder"
2565 msmpeg4v2_encoder_select="h263_encoder"
2566 msmpeg4v3_decoder_select="h263_decoder"
2567 msmpeg4v3_encoder_select="h263_encoder"
2568 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2569 mts2_decoder_select="mss34dsp"
2570 mxpeg_decoder_select="mjpeg_decoder"
2571 nellymoser_decoder_select="mdct sinewin"
2572 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2573 nuv_decoder_select="idctdsp lzo"
2574 on2avc_decoder_select="mdct"
2575 opus_decoder_deps="swresample"
2576 opus_decoder_select="mdct15"
2577 opus_encoder_select="audio_frame_queue mdct15"
2578 png_decoder_select="zlib"
2579 png_encoder_select="llvidencdsp zlib"
2580 prores_decoder_select="blockdsp idctdsp"
2581 prores_encoder_select="fdctdsp"
2582 qcelp_decoder_select="lsp"
2583 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2584 ra_144_decoder_select="audiodsp"
2585 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2586 ralf_decoder_select="golomb"
2587 rawvideo_decoder_select="bswapdsp"
2588 rscc_decoder_select="zlib"
2589 rtjpeg_decoder_select="me_cmp"
2590 rv10_decoder_select="h263_decoder"
2591 rv10_encoder_select="h263_encoder"
2592 rv20_decoder_select="h263_decoder"
2593 rv20_encoder_select="h263_encoder"
2594 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2595 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2596 screenpresso_decoder_select="zlib"
2597 shorten_decoder_select="bswapdsp"
2598 sipr_decoder_select="lsp"
2599 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2600 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2601 sonic_decoder_select="golomb rangecoder"
2602 sonic_encoder_select="golomb rangecoder"
2603 sonic_ls_encoder_select="golomb rangecoder"
2604 sp5x_decoder_select="mjpeg_decoder"
2605 srgc_decoder_select="zlib"
2606 svq1_decoder_select="hpeldsp"
2607 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2608 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2609 svq3_decoder_suggest="zlib"
2610 tak_decoder_select="audiodsp"
2611 tdsc_decoder_select="zlib mjpeg_decoder"
2612 theora_decoder_select="vp3_decoder"
2613 thp_decoder_select="mjpeg_decoder"
2614 tiff_decoder_suggest="zlib lzma"
2615 tiff_encoder_suggest="zlib"
2616 truehd_decoder_select="mlp_parser"
2617 truehd_encoder_select="lpc"
2618 truemotion2_decoder_select="bswapdsp"
2619 truespeech_decoder_select="bswapdsp"
2620 tscc_decoder_select="zlib"
2621 twinvq_decoder_select="mdct lsp sinewin"
2622 txd_decoder_select="texturedsp"
2623 utvideo_decoder_select="bswapdsp llviddsp"
2624 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2625 vble_decoder_select="llviddsp"
2626 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2627 vc1_qsv_decoder_deps="libmfx"
2628 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2629 vc1image_decoder_select="vc1_decoder"
2630 vorbis_decoder_select="mdct"
2631 vorbis_encoder_select="mdct"
2632 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2633 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2634 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2635 vp6a_decoder_select="vp6_decoder"
2636 vp6f_decoder_select="vp6_decoder"
2637 vp7_decoder_select="h264pred videodsp vp8dsp"
2638 vp8_decoder_select="h264pred videodsp vp8dsp"
2639 vp9_decoder_select="videodsp vp9_parser"
2640 webp_decoder_select="vp8_decoder exif"
2641 wmalossless_decoder_select="llauddsp"
2642 wmapro_decoder_select="mdct sinewin wma_freqs"
2643 wmav1_decoder_select="mdct sinewin wma_freqs"
2644 wmav1_encoder_select="mdct sinewin wma_freqs"
2645 wmav2_decoder_select="mdct sinewin wma_freqs"
2646 wmav2_encoder_select="mdct sinewin wma_freqs"
2647 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2648 wmv1_decoder_select="h263_decoder"
2649 wmv1_encoder_select="h263_encoder"
2650 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2651 wmv2_encoder_select="h263_encoder wmv2dsp"
2652 wmv3_decoder_select="vc1_decoder"
2653 wmv3image_decoder_select="wmv3_decoder"
2654 xma1_decoder_select="wmapro_decoder"
2655 xma2_decoder_select="wmapro_decoder"
2656 zerocodec_decoder_select="zlib"
2657 zlib_decoder_select="zlib"
2658 zlib_encoder_select="zlib"
2659 zmbv_decoder_select="zlib"
2660 zmbv_encoder_select="zlib"
2661
2662 # hardware accelerators
2663 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2664 cuda_deps_any="libdl LoadLibrary"
2665 cuvid_deps="cuda"
2666 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2667 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2668 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2669 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2670 vda_deps="vda_framework pthreads corefoundation"
2671 vda_extralibs="-framework QuartzCore"
2672 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2673 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2674 xvmc_deps="X11_extensions_XvMClib_h"
2675
2676 h263_vaapi_hwaccel_deps="vaapi"
2677 h263_vaapi_hwaccel_select="h263_decoder"
2678 h263_videotoolbox_hwaccel_deps="videotoolbox"
2679 h263_videotoolbox_hwaccel_select="h263_decoder"
2680 h264_cuvid_hwaccel_deps="cuda cuvid"
2681 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2682 h264_d3d11va_hwaccel_deps="d3d11va"
2683 h264_d3d11va_hwaccel_select="h264_decoder"
2684 h264_d3d11va2_hwaccel_deps="d3d11va"
2685 h264_d3d11va2_hwaccel_select="h264_decoder"
2686 h264_dxva2_hwaccel_deps="dxva2"
2687 h264_dxva2_hwaccel_select="h264_decoder"
2688 h264_mediacodec_hwaccel_deps="mediacodec"
2689 h264_mmal_hwaccel_deps="mmal"
2690 h264_qsv_hwaccel_deps="libmfx"
2691 h264_vaapi_hwaccel_deps="vaapi"
2692 h264_vaapi_hwaccel_select="h264_decoder"
2693 h264_vda_hwaccel_deps="vda"
2694 h264_vda_hwaccel_select="h264_decoder"
2695 h264_vda_old_hwaccel_deps="vda"
2696 h264_vda_old_hwaccel_select="h264_decoder"
2697 h264_vdpau_hwaccel_deps="vdpau"
2698 h264_vdpau_hwaccel_select="h264_decoder"
2699 h264_videotoolbox_hwaccel_deps="videotoolbox"
2700 h264_videotoolbox_hwaccel_select="h264_decoder"
2701 hevc_cuvid_hwaccel_deps="cuda cuvid"
2702 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2703 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2704 hevc_d3d11va_hwaccel_select="hevc_decoder"
2705 hevc_mediacodec_hwaccel_deps="mediacodec"
2706 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2707 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2708 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2709 hevc_dxva2_hwaccel_select="hevc_decoder"
2710 hevc_qsv_hwaccel_deps="libmfx"
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 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2718 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2719 mpeg_xvmc_hwaccel_deps="xvmc"
2720 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2721 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2722 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2723 mpeg1_vdpau_hwaccel_deps="vdpau"
2724 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2725 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2726 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2727 mpeg1_xvmc_hwaccel_deps="xvmc"
2728 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2729 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2730 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2731 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2732 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2734 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2735 mpeg2_dxva2_hwaccel_deps="dxva2"
2736 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2737 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2738 mpeg2_mmal_hwaccel_deps="mmal"
2739 mpeg2_qsv_hwaccel_deps="libmfx"
2740 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2741 mpeg2_vaapi_hwaccel_deps="vaapi"
2742 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2743 mpeg2_vdpau_hwaccel_deps="vdpau"
2744 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2745 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2746 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2747 mpeg2_xvmc_hwaccel_deps="xvmc"
2748 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2749 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2750 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2751 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2752 mpeg4_mmal_hwaccel_deps="mmal"
2753 mpeg4_vaapi_hwaccel_deps="vaapi"
2754 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2755 mpeg4_vdpau_hwaccel_deps="vdpau"
2756 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2757 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2758 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2759 vc1_cuvid_hwaccel_deps="cuda cuvid"
2760 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2761 vc1_d3d11va_hwaccel_deps="d3d11va"
2762 vc1_d3d11va_hwaccel_select="vc1_decoder"
2763 vc1_d3d11va2_hwaccel_deps="d3d11va"
2764 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2765 vc1_dxva2_hwaccel_deps="dxva2"
2766 vc1_dxva2_hwaccel_select="vc1_decoder"
2767 vc1_mmal_hwaccel_deps="mmal"
2768 vc1_qsv_hwaccel_deps="libmfx"
2769 vc1_qsv_hwaccel_select="qsvdec_vc1"
2770 vc1_vaapi_hwaccel_deps="vaapi"
2771 vc1_vaapi_hwaccel_select="vc1_decoder"
2772 vc1_vdpau_hwaccel_deps="vdpau"
2773 vc1_vdpau_hwaccel_select="vc1_decoder"
2774 vp8_cuvid_hwaccel_deps="cuda cuvid"
2775 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2776 vp9_cuvid_hwaccel_deps="cuda cuvid"
2777 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2778 vp8_mediacodec_hwaccel_deps="mediacodec"
2779 vp8_qsv_hwaccel_deps="libmfx"
2780 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2781 vp9_d3d11va_hwaccel_select="vp9_decoder"
2782 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2783 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2784 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2785 vp9_dxva2_hwaccel_select="vp9_decoder"
2786 vp9_mediacodec_hwaccel_deps="mediacodec"
2787 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2788 vp9_vaapi_hwaccel_select="vp9_decoder"
2789 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2790 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2791 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2792 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2793 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2794
2795 # hardware-accelerated codecs
2796 omx_deps="libdl pthreads"
2797 omx_rpi_select="omx"
2798 qsvdec_select="qsv"
2799 qsvenc_select="qsv"
2800 vaapi_encode_deps="vaapi"
2801 v4l2_m2m_deps_any="linux_videodev2_h"
2802
2803 hwupload_cuda_filter_deps="cuda"
2804 scale_npp_filter_deps="cuda libnpp"
2805 scale_cuda_filter_deps="cuda_sdk"
2806 thumbnail_cuda_filter_deps="cuda_sdk"
2807
2808 nvenc_deps="cuda"
2809 nvenc_deps_any="libdl LoadLibrary"
2810 nvenc_encoder_deps="nvenc"
2811
2812 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2813 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2814 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2815 h264_cuvid_decoder_deps="cuda cuvid"
2816 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2817 h264_mediacodec_decoder_deps="mediacodec"
2818 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2819 h264_mmal_decoder_deps="mmal"
2820 h264_nvenc_encoder_deps="nvenc"
2821 h264_omx_encoder_deps="omx"
2822 h264_qsv_decoder_deps="libmfx"
2823 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2824 h264_qsv_encoder_deps="libmfx"
2825 h264_qsv_encoder_select="qsvenc"
2826 h264_rkmpp_decoder_deps="rkmpp"
2827 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2828 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2829 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2830 h264_vda_decoder_deps="vda"
2831 h264_vda_decoder_select="h264_decoder"
2832 h264_vdpau_decoder_deps="vdpau"
2833 h264_vdpau_decoder_select="h264_decoder"
2834 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2835 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2836 hevc_cuvid_decoder_deps="cuda cuvid"
2837 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2838 hevc_mediacodec_decoder_deps="mediacodec"
2839 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2840 hevc_nvenc_encoder_deps="nvenc"
2841 hevc_qsv_decoder_deps="libmfx"
2842 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2843 hevc_qsv_encoder_deps="libmfx"
2844 hevc_qsv_encoder_select="hevcparse qsvenc"
2845 hevc_rkmpp_decoder_deps="rkmpp"
2846 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2847 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2848 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2849 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2850 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2851 mjpeg_cuvid_decoder_deps="cuda cuvid"
2852 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2853 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2854 mpeg1_cuvid_decoder_deps="cuda cuvid"
2855 mpeg1_vdpau_decoder_deps="vdpau"
2856 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2857 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2858 mpeg2_crystalhd_decoder_select="crystalhd"
2859 mpeg2_cuvid_decoder_deps="cuda cuvid"
2860 mpeg2_mmal_decoder_deps="mmal"
2861 mpeg2_mediacodec_decoder_deps="mediacodec"
2862 mpeg2_qsv_decoder_deps="libmfx"
2863 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2864 mpeg2_qsv_encoder_deps="libmfx"
2865 mpeg2_qsv_encoder_select="qsvenc"
2866 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2867 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2868 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2869 mpeg4_crystalhd_decoder_select="crystalhd"
2870 mpeg4_cuvid_decoder_deps="cuda cuvid"
2871 mpeg4_mediacodec_decoder_deps="mediacodec"
2872 mpeg4_mmal_decoder_deps="mmal"
2873 mpeg4_omx_encoder_deps="omx"
2874 mpeg4_vdpau_decoder_deps="vdpau"
2875 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2876 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2877 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2878 mpeg_vdpau_decoder_deps="vdpau"
2879 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2880 msmpeg4_crystalhd_decoder_select="crystalhd"
2881 nvenc_h264_encoder_select="h264_nvenc_encoder"
2882 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2883 vc1_crystalhd_decoder_select="crystalhd"
2884 vc1_cuvid_decoder_deps="cuda cuvid"
2885 vc1_mmal_decoder_deps="mmal"
2886 vc1_vdpau_decoder_deps="vdpau"
2887 vc1_vdpau_decoder_select="vc1_decoder"
2888 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2889 vp8_cuvid_decoder_deps="cuda cuvid"
2890 vp8_mediacodec_decoder_deps="mediacodec"
2891 vp8_qsv_decoder_deps="libmfx"
2892 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2893 vp8_rkmpp_decoder_deps="rkmpp"
2894 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2895 vp8_vaapi_encoder_select="vaapi_encode"
2896 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2897 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2898 vp9_cuvid_decoder_deps="cuda cuvid"
2899 vp9_mediacodec_decoder_deps="mediacodec"
2900 vp9_rkmpp_decoder_deps="rkmpp"
2901 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2902 vp9_vaapi_encoder_select="vaapi_encode"
2903 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2904 wmv3_crystalhd_decoder_select="crystalhd"
2905 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2906
2907 # parsers
2908 h264_parser_select="golomb h264dsp h264parse"
2909 hevc_parser_select="hevcparse"
2910 mpegaudio_parser_select="mpegaudioheader"
2911 mpegvideo_parser_select="mpegvideo"
2912 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2913 vc1_parser_select="vc1dsp"
2914
2915 # bitstream_filters
2916 h264_metadata_bsf_select="cbs_h264"
2917 h264_redundant_pps_bsf_select="cbs_h264"
2918 hevc_metadata_bsf_select="cbs_h265"
2919 mjpeg2jpeg_bsf_select="jpegtables"
2920 mpeg2_metadata_bsf_select="cbs_mpeg2"
2921 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2922
2923 # external libraries
2924 aac_at_decoder_deps="audiotoolbox"
2925 ac3_at_decoder_deps="audiotoolbox"
2926 ac3_at_decoder_select="ac3_parser"
2927 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2928 alac_at_decoder_deps="audiotoolbox"
2929 amr_nb_at_decoder_deps="audiotoolbox"
2930 avisynth_deps_any="libdl LoadLibrary"
2931 avisynth_demuxer_deps="avisynth"
2932 avisynth_demuxer_select="riffdec"
2933 eac3_at_decoder_deps="audiotoolbox"
2934 eac3_at_decoder_select="ac3_parser"
2935 gsm_ms_at_decoder_deps="audiotoolbox"
2936 ilbc_at_decoder_deps="audiotoolbox"
2937 mp1_at_decoder_deps="audiotoolbox"
2938 mp2_at_decoder_deps="audiotoolbox"
2939 mp3_at_decoder_deps="audiotoolbox"
2940 mp1_at_decoder_select="mpegaudioheader"
2941 mp2_at_decoder_select="mpegaudioheader"
2942 mp3_at_decoder_select="mpegaudioheader"
2943 pcm_alaw_at_decoder_deps="audiotoolbox"
2944 pcm_mulaw_at_decoder_deps="audiotoolbox"
2945 qdmc_at_decoder_deps="audiotoolbox"
2946 qdm2_at_decoder_deps="audiotoolbox"
2947 aac_at_encoder_deps="audiotoolbox"
2948 aac_at_encoder_select="audio_frame_queue"
2949 alac_at_encoder_deps="audiotoolbox"
2950 alac_at_encoder_select="audio_frame_queue"
2951 ilbc_at_encoder_deps="audiotoolbox"
2952 ilbc_at_encoder_select="audio_frame_queue"
2953 pcm_alaw_at_encoder_deps="audiotoolbox"
2954 pcm_alaw_at_encoder_select="audio_frame_queue"
2955 pcm_mulaw_at_encoder_deps="audiotoolbox"
2956 pcm_mulaw_at_encoder_select="audio_frame_queue"
2957 chromaprint_muxer_deps="chromaprint"
2958 h264_videotoolbox_encoder_deps="pthreads"
2959 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2960 libcelt_decoder_deps="libcelt"
2961 libfdk_aac_decoder_deps="libfdk_aac"
2962 libfdk_aac_encoder_deps="libfdk_aac"
2963 libfdk_aac_encoder_select="audio_frame_queue"
2964 libgme_demuxer_deps="libgme"
2965 libgsm_decoder_deps="libgsm"
2966 libgsm_encoder_deps="libgsm"
2967 libgsm_ms_decoder_deps="libgsm"
2968 libgsm_ms_encoder_deps="libgsm"
2969 libilbc_decoder_deps="libilbc"
2970 libilbc_encoder_deps="libilbc"
2971 libkvazaar_encoder_deps="libkvazaar"
2972 libmodplug_demuxer_deps="libmodplug"
2973 libmp3lame_encoder_deps="libmp3lame"
2974 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2975 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2976 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2977 libopencore_amrnb_encoder_select="audio_frame_queue"
2978 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2979 libopenh264_decoder_deps="libopenh264"
2980 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2981 libopenh264_encoder_deps="libopenh264"
2982 libopenjpeg_decoder_deps="libopenjpeg"
2983 libopenjpeg_encoder_deps="libopenjpeg"
2984 libopenmpt_demuxer_deps="libopenmpt"
2985 libopus_decoder_deps="libopus"
2986 libopus_encoder_deps="libopus"
2987 libopus_encoder_select="audio_frame_queue"
2988 librsvg_decoder_deps="librsvg"
2989 libshine_encoder_deps="libshine"
2990 libshine_encoder_select="audio_frame_queue"
2991 libspeex_decoder_deps="libspeex"
2992 libspeex_encoder_deps="libspeex"
2993 libspeex_encoder_select="audio_frame_queue"
2994 libtheora_encoder_deps="libtheora"
2995 libtwolame_encoder_deps="libtwolame"
2996 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2997 libvorbis_decoder_deps="libvorbis"
2998 libvorbis_encoder_deps="libvorbis libvorbisenc"
2999 libvorbis_encoder_select="audio_frame_queue"
3000 libvpx_vp8_decoder_deps="libvpx"
3001 libvpx_vp8_encoder_deps="libvpx"
3002 libvpx_vp9_decoder_deps="libvpx"
3003 libvpx_vp9_encoder_deps="libvpx"
3004 libwavpack_encoder_deps="libwavpack"
3005 libwavpack_encoder_select="audio_frame_queue"
3006 libwebp_encoder_deps="libwebp"
3007 libwebp_anim_encoder_deps="libwebp"
3008 libx262_encoder_deps="libx262"
3009 libx264_encoder_deps="libx264"
3010 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3011 libx264rgb_encoder_select="libx264_encoder"
3012 libx265_encoder_deps="libx265"
3013 libxavs_encoder_deps="libxavs"
3014 libxvid_encoder_deps="libxvid"
3015 libzvbi_teletext_decoder_deps="libzvbi"
3016 videotoolbox_suggest="coreservices"
3017 videotoolbox_deps="corefoundation coremedia corevideo"
3018 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3019 videotoolbox_encoder_suggest="vda_framework"
3020
3021 # demuxers / muxers
3022 ac3_demuxer_select="ac3_parser"
3023 aiff_muxer_select="iso_media"
3024 asf_demuxer_select="riffdec"
3025 asf_o_demuxer_select="riffdec"
3026 asf_muxer_select="riffenc"
3027 asf_stream_muxer_select="asf_muxer"
3028 avi_demuxer_select="iso_media riffdec exif"
3029 avi_muxer_select="riffenc"
3030 caf_demuxer_select="iso_media riffdec"
3031 caf_muxer_select="iso_media"
3032 dash_muxer_select="mp4_muxer"
3033 dash_demuxer_deps="libxml2"
3034 dirac_demuxer_select="dirac_parser"
3035 dts_demuxer_select="dca_parser"
3036 dtshd_demuxer_select="dca_parser"
3037 dv_demuxer_select="dvprofile"
3038 dv_muxer_select="dvprofile"
3039 dxa_demuxer_select="riffdec"
3040 eac3_demuxer_select="ac3_parser"
3041 f4v_muxer_select="mov_muxer"
3042 fifo_muxer_deps="threads"
3043 flac_demuxer_select="flac_parser"
3044 hds_muxer_select="flv_muxer"
3045 hls_muxer_select="mpegts_muxer"
3046 hls_muxer_suggest="gcrypt openssl"
3047 image2_alias_pix_demuxer_select="image2_demuxer"
3048 image2_brender_pix_demuxer_select="image2_demuxer"
3049 ipod_muxer_select="mov_muxer"
3050 ismv_muxer_select="mov_muxer"
3051 matroska_audio_muxer_select="matroska_muxer"
3052 matroska_demuxer_select="iso_media riffdec"
3053 matroska_demuxer_suggest="bzlib lzo zlib"
3054 matroska_muxer_select="iso_media riffenc"
3055 mmf_muxer_select="riffenc"
3056 mov_demuxer_select="iso_media riffdec"
3057 mov_demuxer_suggest="zlib"
3058 mov_muxer_select="iso_media riffenc rtpenc_chain"
3059 mp3_demuxer_select="mpegaudio_parser"
3060 mp3_muxer_select="mpegaudioheader"
3061 mp4_muxer_select="mov_muxer"
3062 mpegts_demuxer_select="iso_media"
3063 mpegts_muxer_select="adts_muxer latm_muxer"
3064 mpegtsraw_demuxer_select="mpegts_demuxer"
3065 mxf_d10_muxer_select="mxf_muxer"
3066 mxf_opatom_muxer_select="mxf_muxer"
3067 nut_muxer_select="riffenc"
3068 nuv_demuxer_select="riffdec"
3069 oga_muxer_select="ogg_muxer"
3070 ogg_demuxer_select="dirac_parse"
3071 ogv_muxer_select="ogg_muxer"
3072 opus_muxer_select="ogg_muxer"
3073 psp_muxer_select="mov_muxer"
3074 rtp_demuxer_select="sdp_demuxer"
3075 rtp_muxer_select="golomb"
3076 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3077 rtsp_demuxer_select="http_protocol rtpdec"
3078 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3079 sap_demuxer_select="sdp_demuxer"
3080 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3081 sdp_demuxer_select="rtpdec"
3082 smoothstreaming_muxer_select="ismv_muxer"
3083 spdif_muxer_select="aac_parser"
3084 spx_muxer_select="ogg_muxer"
3085 swf_demuxer_suggest="zlib"
3086 tak_demuxer_select="tak_parser"
3087 tg2_muxer_select="mov_muxer"
3088 tgp_muxer_select="mov_muxer"
3089 vobsub_demuxer_select="mpegps_demuxer"
3090 w64_demuxer_select="wav_demuxer"
3091 w64_muxer_select="wav_muxer"
3092 wav_demuxer_select="riffdec"
3093 wav_muxer_select="riffenc"
3094 webm_muxer_select="iso_media riffenc"
3095 webm_dash_manifest_demuxer_select="matroska_demuxer"
3096 wtv_demuxer_select="mpegts_demuxer riffdec"
3097 wtv_muxer_select="mpegts_muxer riffenc"
3098 xmv_demuxer_select="riffdec"
3099 xwma_demuxer_select="riffdec"
3100
3101 # indevs / outdevs
3102 alsa_indev_deps="alsa"
3103 alsa_outdev_deps="alsa"
3104 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3105 avfoundation_indev_suggest="coregraphics applicationservices"
3106 avfoundation_indev_extralibs="-framework Foundation"
3107 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3108 caca_outdev_deps="libcaca"
3109 decklink_deps_any="libdl LoadLibrary"
3110 decklink_indev_deps="decklink threads"
3111 decklink_indev_extralibs="-lstdc++"
3112 decklink_outdev_deps="decklink threads"
3113 decklink_outdev_extralibs="-lstdc++"
3114 libndi_newtek_indev_deps="libndi_newtek"
3115 libndi_newtek_indev_extralibs="-lndi"
3116 libndi_newtek_outdev_deps="libndi_newtek"
3117 libndi_newtek_outdev_extralibs="-lndi"
3118 dshow_indev_deps="IBaseFilter"
3119 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3120 fbdev_indev_deps="linux_fb_h"
3121 fbdev_outdev_deps="linux_fb_h"
3122 gdigrab_indev_deps="CreateDIBSection"
3123 gdigrab_indev_extralibs="-lgdi32"
3124 gdigrab_indev_select="bmp_decoder"
3125 iec61883_indev_deps="libiec61883"
3126 jack_indev_deps="jack"
3127 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3128 kmsgrab_indev_deps="libdrm"
3129 lavfi_indev_deps="avfilter"
3130 libcdio_indev_deps="libcdio"
3131 libdc1394_indev_deps="libdc1394"
3132 openal_indev_deps="openal"
3133 opengl_outdev_deps="opengl"
3134 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3135 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3136 pulse_indev_deps="libpulse"
3137 pulse_outdev_deps="libpulse"
3138 sdl2_outdev_deps="sdl2"
3139 sndio_indev_deps="sndio"
3140 sndio_outdev_deps="sndio"
3141 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3142 v4l2_indev_suggest="libv4l2"
3143 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3144 v4l2_outdev_suggest="libv4l2"
3145 vfwcap_indev_deps="vfw32 vfwcap_defines"
3146 xcbgrab_indev_deps="libxcb"
3147 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3148 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3149 xv_outdev_extralibs="-lXv -lX11 -lXext"
3150
3151 # protocols
3152 async_protocol_deps="threads"
3153 bluray_protocol_deps="libbluray"
3154 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3155 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3156 ffrtmpcrypt_protocol_select="tcp_protocol"
3157 ffrtmphttp_protocol_conflict="librtmp_protocol"
3158 ffrtmphttp_protocol_select="http_protocol"
3159 ftp_protocol_select="tcp_protocol"
3160 gopher_protocol_select="network"
3161 http_protocol_select="tcp_protocol"
3162 http_protocol_suggest="zlib"
3163 httpproxy_protocol_select="tcp_protocol"
3164 httpproxy_protocol_suggest="zlib"
3165 https_protocol_select="tls_protocol"
3166 https_protocol_suggest="zlib"
3167 icecast_protocol_select="http_protocol"
3168 librtmp_protocol_deps="librtmp"
3169 librtmpe_protocol_deps="librtmp"
3170 librtmps_protocol_deps="librtmp"
3171 librtmpt_protocol_deps="librtmp"
3172 librtmpte_protocol_deps="librtmp"
3173 libsmbclient_protocol_deps="libsmbclient gplv3"
3174 libssh_protocol_deps="libssh"
3175 mmsh_protocol_select="http_protocol"
3176 mmst_protocol_select="network"
3177 rtmp_protocol_conflict="librtmp_protocol"
3178 rtmp_protocol_select="tcp_protocol"
3179 rtmp_protocol_suggest="zlib"
3180 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3181 rtmpe_protocol_suggest="zlib"
3182 rtmps_protocol_conflict="librtmp_protocol"
3183 rtmps_protocol_select="tls_protocol"
3184 rtmps_protocol_suggest="zlib"
3185 rtmpt_protocol_select="ffrtmphttp_protocol"
3186 rtmpt_protocol_suggest="zlib"
3187 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3188 rtmpte_protocol_suggest="zlib"
3189 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3190 rtmpts_protocol_suggest="zlib"
3191 rtp_protocol_select="udp_protocol"
3192 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3193 sctp_protocol_select="network"
3194 srtp_protocol_select="rtp_protocol srtp"
3195 tcp_protocol_select="network"
3196 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3197 tls_gnutls_protocol_deps="gnutls"
3198 tls_gnutls_protocol_select="tcp_protocol"
3199 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3200 tls_openssl_protocol_deps="openssl"
3201 tls_openssl_protocol_select="tcp_protocol"
3202 tls_schannel_protocol_deps="schannel"
3203 tls_schannel_protocol_select="tcp_protocol"
3204 tls_securetransport_protocol_deps="securetransport"
3205 tls_securetransport_protocol_select="tcp_protocol"
3206 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3207 udp_protocol_select="network"
3208 udplite_protocol_select="network"
3209 unix_protocol_deps="sys_un_h"
3210 unix_protocol_select="network"
3211
3212 # filters
3213 afftfilt_filter_deps="avcodec"
3214 afftfilt_filter_select="fft"
3215 afir_filter_deps="avcodec"
3216 afir_filter_select="fft"
3217 amovie_filter_deps="avcodec avformat"
3218 aresample_filter_deps="swresample"
3219 ass_filter_deps="libass"
3220 atempo_filter_deps="avcodec"
3221 atempo_filter_select="rdft"
3222 azmq_filter_deps="libzmq"
3223 blackframe_filter_deps="gpl"
3224 boxblur_filter_deps="gpl"
3225 bs2b_filter_deps="libbs2b"
3226 colormatrix_filter_deps="gpl"
3227 coreimage_filter_deps="coreimage appkit"
3228 coreimage_filter_extralibs="-framework OpenGL"
3229 coreimagesrc_filter_deps="coreimage appkit"
3230 coreimagesrc_filter_extralibs="-framework OpenGL"
3231 cover_rect_filter_deps="avcodec avformat gpl"
3232 cropdetect_filter_deps="gpl"
3233 deinterlace_qsv_filter_deps="libmfx"
3234 deinterlace_vaapi_filter_deps="vaapi"
3235 delogo_filter_deps="gpl"
3236 deshake_filter_select="pixelutils"
3237 deshake_filter_suggest="opencl"
3238 drawtext_filter_deps="libfreetype"
3239 drawtext_filter_suggest="libfontconfig libfribidi"
3240 elbg_filter_deps="avcodec"
3241 eq_filter_deps="gpl"
3242 fftfilt_filter_deps="avcodec"
3243 fftfilt_filter_select="rdft"
3244 find_rect_filter_deps="avcodec avformat gpl"
3245 firequalizer_filter_deps="avcodec"
3246 firequalizer_filter_select="rdft"
3247 flite_filter_deps="libflite"
3248 framerate_filter_select="pixelutils"
3249 frei0r_filter_deps="frei0r libdl"
3250 frei0r_src_filter_deps="frei0r libdl"
3251 fspp_filter_deps="gpl"
3252 geq_filter_deps="gpl"
3253 histeq_filter_deps="gpl"
3254 hqdn3d_filter_deps="gpl"
3255 interlace_filter_deps="gpl"
3256 kerndeint_filter_deps="gpl"
3257 ladspa_filter_deps="ladspa libdl"
3258 mcdeint_filter_deps="avcodec gpl"
3259 movie_filter_deps="avcodec avformat"
3260 mpdecimate_filter_deps="gpl"
3261 mpdecimate_filter_select="pixelutils"
3262 mptestsrc_filter_deps="gpl"
3263 negate_filter_deps="lut_filter"
3264 nnedi_filter_deps="gpl"
3265 ocr_filter_deps="libtesseract"
3266 ocv_filter_deps="libopencv"
3267 owdenoise_filter_deps="gpl"
3268 pan_filter_deps="swresample"
3269 perspective_filter_deps="gpl"
3270 phase_filter_deps="gpl"
3271 pp7_filter_deps="gpl"
3272 pp_filter_deps="gpl postproc"
3273 pullup_filter_deps="gpl"
3274 removelogo_filter_deps="avcodec avformat swscale"
3275 repeatfields_filter_deps="gpl"
3276 resample_filter_deps="avresample"
3277 rubberband_filter_deps="librubberband"
3278 sab_filter_deps="gpl swscale"
3279 scale2ref_filter_deps="swscale"
3280 scale_filter_deps="swscale"
3281 scale_qsv_filter_deps="libmfx"
3282 select_filter_select="pixelutils"
3283 showcqt_filter_deps="avcodec avformat swscale"
3284 showcqt_filter_suggest="libfontconfig libfreetype"
3285 showcqt_filter_select="fft"
3286 showfreqs_filter_deps="avcodec"
3287 showfreqs_filter_select="fft"
3288 showspectrum_filter_deps="avcodec"
3289 showspectrum_filter_select="fft"
3290 showspectrumpic_filter_deps="avcodec"
3291 showspectrumpic_filter_select="fft"
3292 signature_filter_deps="gpl avcodec avformat"
3293 smartblur_filter_deps="gpl swscale"
3294 sofalizer_filter_deps="libmysofa avcodec"
3295 sofalizer_filter_select="fft"
3296 spectrumsynth_filter_deps="avcodec"
3297 spectrumsynth_filter_select="fft"
3298 spp_filter_deps="gpl avcodec"
3299 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3300 stereo3d_filter_deps="gpl"
3301 subtitles_filter_deps="avformat avcodec libass"
3302 super2xsai_filter_deps="gpl"
3303 pixfmts_super2xsai_test_deps="super2xsai_filter"
3304 tinterlace_filter_deps="gpl"
3305 tinterlace_merge_test_deps="tinterlace_filter"
3306 tinterlace_pad_test_deps="tinterlace_filter"
3307 tonemap_filter_deps="const_nan"
3308 uspp_filter_deps="gpl avcodec"
3309 unsharp_filter_suggest="opencl"
3310 vaguedenoiser_filter_deps="gpl"
3311 vidstabdetect_filter_deps="libvidstab"
3312 vidstabtransform_filter_deps="libvidstab"
3313 libvmaf_filter_deps="libvmaf"
3314 zmq_filter_deps="libzmq"
3315 zoompan_filter_deps="swscale"
3316 zscale_filter_deps="libzimg const_nan"
3317 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3318
3319 # examples
3320 avio_dir_cmd_deps="avformat avutil"
3321 avio_reading_deps="avformat avcodec avutil"
3322 decode_audio_example_deps="avcodec avutil"
3323 decode_video_example_deps="avcodec avutil"
3324 demuxing_decoding_example_deps="avcodec avformat avutil"
3325 encode_audio_example_deps="avcodec avutil"
3326 encode_video_example_deps="avcodec avutil"
3327 extract_mvs_example_deps="avcodec avformat avutil"
3328 filter_audio_example_deps="avfilter avutil"
3329 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3330 filtering_video_example_deps="avfilter avcodec avformat avutil"
3331 http_multiclient_example_deps="avformat avutil fork"
3332 hw_decode_example_deps="avcodec avformat avutil"
3333 metadata_example_deps="avformat avutil"
3334 muxing_example_deps="avcodec avformat avutil swscale"
3335 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3336 remuxing_example_deps="avcodec avformat avutil"
3337 resampling_audio_example_deps="avutil swresample"
3338 scaling_video_example_deps="avutil swscale"
3339 transcode_aac_example_deps="avcodec avformat swresample"
3340 transcoding_example_deps="avfilter avcodec avformat avutil"
3341
3342 # EXTRALIBS_LIST
3343 cpu_init_extralibs="pthreads_extralibs"
3344 cws2fws_extralibs="zlib_extralibs"
3345
3346 # libraries, in linking order
3347 avcodec_deps="avutil"
3348 avcodec_suggest="libm"
3349 avcodec_select="null_bsf"
3350 avdevice_deps="avformat avcodec avutil"
3351 avdevice_suggest="libm"
3352 avfilter_deps="avutil"
3353 avfilter_suggest="libm"
3354 avformat_deps="avcodec avutil"
3355 avformat_suggest="libm network"
3356 avresample_deps="avutil"
3357 avresample_suggest="libm"
3358 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3359 postproc_deps="avutil gpl"
3360 postproc_suggest="libm"
3361 swresample_deps="avutil"
3362 swresample_suggest="libm libsoxr"
3363 swscale_deps="avutil"
3364 swscale_suggest="libm"
3365
3366 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3367 avfilter_extralibs="pthreads_extralibs"
3368 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3369
3370 # programs
3371 ffmpeg_deps="avcodec avfilter avformat swresample"
3372 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3373                null_filter
3374                trim_filter"
3375 ffmpeg_suggest="ole32 psapi shell32"
3376 ffplay_deps="avcodec avformat swscale swresample sdl2"
3377 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3378 ffplay_suggest="shell32"
3379 ffprobe_deps="avcodec avformat"
3380 ffprobe_suggest="shell32"
3381 ffserver_deps="avformat fork sarestart"
3382 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3383
3384 # documentation
3385 podpages_deps="perl"
3386 manpages_deps="perl pod2man"
3387 htmlpages_deps="perl"
3388 htmlpages_deps_any="makeinfo_html texi2html"
3389 txtpages_deps="perl makeinfo"
3390 doc_deps_any="manpages htmlpages podpages txtpages"
3391
3392 # default parameters
3393
3394 logfile="ffbuild/config.log"
3395
3396 # installation paths
3397 prefix_default="/usr/local"
3398 bindir_default='${prefix}/bin'
3399 datadir_default='${prefix}/share/ffmpeg'
3400 docdir_default='${prefix}/share/doc/ffmpeg'
3401 incdir_default='${prefix}/include'
3402 libdir_default='${prefix}/lib'
3403 mandir_default='${prefix}/share/man'
3404
3405 # toolchain
3406 ar_default="ar"
3407 cc_default="gcc"
3408 cxx_default="g++"
3409 host_cc_default="gcc"
3410 doxygen_default="doxygen"
3411 install="install"
3412 ln_s_default="ln -s -f"
3413 nm_default="nm -g"
3414 pkg_config_default=pkg-config
3415 ranlib_default="ranlib"
3416 strip_default="strip"
3417 version_script='--version-script'
3418 x86asmexe_default="nasm"
3419 windres_default="windres"
3420 nvcc_default="nvcc"
3421 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3422 striptype="direct"
3423
3424 # OS
3425 target_os_default=$(tolower $(uname -s))
3426 host_os=$target_os_default
3427
3428 # machine
3429 if test "$target_os_default" = aix; then
3430     arch_default=$(uname -p)
3431     strip_default="strip -X32_64"
3432 else
3433     arch_default=$(uname -m)
3434 fi
3435 cpu="generic"
3436 intrinsics="none"
3437
3438 # configurable options
3439 enable $PROGRAM_LIST
3440 enable $DOCUMENT_LIST
3441 enable $EXAMPLE_LIST
3442 enable $(filter_out avresample $LIBRARY_LIST)
3443 enable stripping
3444
3445 enable asm
3446 enable debug
3447 enable doc
3448 enable faan faandct faanidct
3449 enable optimizations
3450 enable runtime_cpudetect
3451 enable safe_bitstream_reader
3452 enable static
3453 enable swscale_alpha
3454 enable valgrind_backtrace
3455
3456 sws_max_filter_size_default=256
3457 set_default sws_max_filter_size
3458
3459 # internal components are enabled by default
3460 enable $EXTRALIBS_LIST
3461
3462 # Avoid external, non-system, libraries getting enabled by dependency resolution
3463 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3464
3465 # build settings
3466 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3467 LIBPREF="lib"
3468 LIBSUF=".a"
3469 FULLNAME='$(NAME)$(BUILDSUF)'
3470 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3471 SLIBPREF="lib"
3472 SLIBSUF=".so"
3473 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3474 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3475 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3476 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3477 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3478 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3479 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3480
3481 asflags_filter=echo
3482 cflags_filter=echo
3483 ldflags_filter=echo
3484
3485 AS_C='-c'
3486 AS_O='-o $@'
3487 CC_C='-c'
3488 CC_E='-E -o $@'
3489 CC_O='-o $@'
3490 CXX_C='-c'
3491 CXX_O='-o $@'
3492 OBJCC_C='-c'
3493 OBJCC_E='-E -o $@'
3494 OBJCC_O='-o $@'
3495 X86ASM_O='-o $@'
3496 LD_O='-o $@'
3497 LD_LIB='-l%'
3498 LD_PATH='-L'
3499 HOSTCC_C='-c'
3500 HOSTCC_E='-E -o $@'
3501 HOSTCC_O='-o $@'
3502 HOSTLD_O='-o $@'
3503 NVCC_C='-c'
3504 NVCC_O='-o $@'
3505
3506 host_extralibs='-lm'
3507 host_cflags_filter=echo
3508 host_ldflags_filter=echo
3509
3510 target_path='$(CURDIR)'
3511
3512 # since the object filename is not given with the -MM flag, the compiler
3513 # is only able to print the basename, and we must add the path ourselves
3514 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3515 DEPFLAGS='-MM'
3516
3517 mkdir -p ffbuild
3518
3519 # find source path
3520 if test -f configure; then
3521     source_path=.
3522 else
3523     source_path=$(cd $(dirname "$0"); pwd)
3524     case "$source_path" in
3525         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3526     esac
3527     test -e "$source_path/config.h" &&
3528         die "Out of tree builds are impossible with config.h in source dir."
3529 fi
3530
3531 for v in "$@"; do
3532     r=${v#*=}
3533     l=${v%"$r"}
3534     r=$(sh_quote "$r")
3535     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3536 done
3537
3538 find_things(){
3539     thing=$1
3540     pattern=$2
3541     file=$source_path/$3
3542     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3543 }
3544
3545 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3546 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3547 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3548 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3549 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3550 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3551 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3552 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3553 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3554
3555 find_things_extern(){
3556     thing=$1
3557     pattern=$2
3558     file=$source_path/$3
3559     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3560 }
3561
3562 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3563 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3564
3565 AVCODEC_COMPONENTS_LIST="
3566     $BSF_LIST
3567     $DECODER_LIST
3568     $ENCODER_LIST
3569     $HWACCEL_LIST
3570     $PARSER_LIST
3571 "
3572
3573 AVDEVICE_COMPONENTS_LIST="
3574     $INDEV_LIST
3575     $OUTDEV_LIST
3576 "
3577
3578 AVFILTER_COMPONENTS_LIST="
3579     $FILTER_LIST
3580 "
3581
3582 AVFORMAT_COMPONENTS_LIST="
3583     $DEMUXER_LIST
3584     $MUXER_LIST
3585     $PROTOCOL_LIST
3586 "
3587
3588 ALL_COMPONENTS="
3589     $AVCODEC_COMPONENTS_LIST
3590     $AVDEVICE_COMPONENTS_LIST
3591     $AVFILTER_COMPONENTS_LIST
3592     $AVFORMAT_COMPONENTS_LIST
3593 "
3594
3595 for n in $COMPONENT_LIST; do
3596     v=$(toupper ${n%s})_LIST
3597     eval enable \$$v
3598     eval ${n}_if_any="\$$v"
3599 done
3600
3601 enable $ARCH_EXT_LIST
3602
3603 die_unknown(){
3604     echo "Unknown option \"$1\"."
3605     echo "See $0 --help for available options."
3606     exit 1
3607 }
3608
3609 print_in_columns() {
3610     cols=$(expr $ncols / 24)
3611     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3612 }
3613
3614 show_list() {
3615     suffix=_$1
3616     shift
3617     echo $* | sed s/$suffix//g | print_in_columns
3618     exit 0
3619 }
3620
3621 rand_list(){
3622     IFS=', '
3623     set -- $*
3624     unset IFS
3625     for thing; do
3626         comp=${thing%:*}
3627         prob=${thing#$comp}
3628         prob=${prob#:}
3629         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3630         echo "prob ${prob:-0.5}"
3631         printf '%s\n' $comp
3632     done
3633 }
3634
3635 do_random(){
3636     action=$1
3637     shift
3638     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3639     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3640 }
3641
3642 for opt do
3643     optval="${opt#*=}"
3644     case "$opt" in
3645         --extra-ldflags=*)
3646             add_ldflags $optval
3647         ;;
3648         --extra-ldexeflags=*)
3649             add_ldexeflags $optval
3650         ;;
3651         --extra-ldlibflags=*)
3652             add_ldlibflags $optval
3653         ;;
3654         --extra-libs=*)
3655             add_extralibs $optval
3656         ;;
3657         --disable-devices)
3658             disable $INDEV_LIST $OUTDEV_LIST
3659         ;;
3660         --enable-debug=*)
3661             debuglevel="$optval"
3662         ;;
3663         --disable-programs)
3664             disable $PROGRAM_LIST
3665         ;;
3666         --disable-everything)
3667             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3668         ;;
3669         --disable-all)
3670             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3671             disable $LIBRARY_LIST $PROGRAM_LIST doc
3672             enable avutil
3673         ;;
3674         --enable-random|--disable-random)
3675             action=${opt%%-random}
3676             do_random ${action#--} $COMPONENT_LIST
3677         ;;
3678         --enable-random=*|--disable-random=*)
3679             action=${opt%%-random=*}
3680             do_random ${action#--} $optval
3681         ;;
3682         --enable-sdl)
3683             enable sdl2
3684         ;;
3685         --enable-*=*|--disable-*=*)
3686             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3687             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3688             eval list=\$$(toupper $thing)_LIST
3689             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3690             list=$(filter "$name" $list)
3691             [ "$list" = "" ] && warn "Option $opt did not match anything"
3692             $action $list
3693         ;;
3694         --enable-yasm|--disable-yasm)
3695             warn "The ${opt} option is only provided for compatibility and will be\n"\
3696                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3697             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3698         ;;
3699         --yasmexe=*)
3700             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3701                  "removed in the future. Use --x86asmexe instead."
3702             x86asmexe="$optval"
3703         ;;
3704         --enable-?*|--disable-?*)
3705             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3706             if is_in $option $COMPONENT_LIST; then
3707                 test $action = disable && action=unset
3708                 eval $action \$$(toupper ${option%s})_LIST
3709             elif is_in $option $CMDLINE_SELECT; then
3710                 $action $option
3711             else
3712                 die_unknown $opt
3713             fi
3714         ;;
3715         --list-*)
3716             NAME="${opt#--list-}"
3717             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3718             NAME=${NAME%s}
3719             eval show_list $NAME \$$(toupper $NAME)_LIST
3720         ;;
3721         --help|-h) show_help
3722         ;;
3723         --quiet|-q) quiet=yes
3724         ;;
3725         --fatal-warnings) enable fatal_warnings
3726         ;;
3727         --libfuzzer=*)
3728             libfuzzer_path="$optval"
3729         ;;
3730         *)
3731             optname="${opt%%=*}"
3732             optname="${optname#--}"
3733             optname=$(echo "$optname" | sed 's/-/_/g')
3734             if is_in $optname $CMDLINE_SET; then
3735                 eval $optname='$optval'
3736             elif is_in $optname $CMDLINE_APPEND; then
3737                 append $optname "$optval"
3738             else
3739                 die_unknown $opt
3740             fi
3741         ;;
3742     esac
3743 done
3744
3745 for e in $env; do
3746     eval "export $e"
3747 done
3748
3749 if disabled autodetect; then
3750
3751     # Unless iconv is explicitely disabled by the user, we still want to probe
3752     # for the iconv from the libc.
3753     disabled iconv || enable libc_iconv
3754
3755     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3756     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3757 fi
3758 # Mark specifically enabled, but normally autodetected libraries as requested.
3759 for lib in $AUTODETECT_LIBS; do
3760     enabled $lib && request $lib
3761 done
3762 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3763 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3764 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3765
3766 disabled logging && logfile=/dev/null
3767
3768 die_license_disabled() {
3769     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3770 }
3771
3772 die_license_disabled_gpl() {
3773     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3774 }
3775
3776 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3777 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3778
3779 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3780 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3781
3782 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3783
3784 # Disable all the library-specific components if the library itself
3785 # is disabled, see AVCODEC_LIST and following _LIST variables.
3786
3787 disable_components(){
3788     disabled ${1} && disable $(
3789         eval components="\$$(toupper ${1})_COMPONENTS"
3790         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3791     )
3792 }
3793
3794 map 'disable_components $v' $LIBRARY_LIST
3795
3796 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3797 set >> $logfile
3798
3799 test -n "$valgrind" && toolchain="valgrind-memcheck"
3800
3801 enabled ossfuzz && {
3802     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3803     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3804 }
3805
3806 case "$toolchain" in
3807     *-asan)
3808         cc_default="${toolchain%-asan}"
3809         add_cflags  -fsanitize=address
3810         add_ldflags -fsanitize=address
3811     ;;
3812     *-msan)
3813         cc_default="${toolchain%-msan}"
3814         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3815         add_ldflags -fsanitize=memory
3816     ;;
3817     *-tsan)
3818         cc_default="${toolchain%-tsan}"
3819         add_cflags  -fsanitize=thread -fPIE
3820         add_ldflags -fsanitize=thread -pie
3821         case "$toolchain" in
3822             gcc-tsan)
3823                 add_cflags  -fPIC
3824                 add_ldflags -fPIC
3825                 ;;
3826         esac
3827     ;;
3828     *-usan)
3829         cc_default="${toolchain%-usan}"
3830         add_cflags  -fsanitize=undefined
3831         add_ldflags -fsanitize=undefined
3832     ;;
3833     valgrind-*)
3834         target_exec_default="valgrind"
3835         case "$toolchain" in
3836             valgrind-massif)
3837                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3838                 ;;
3839             valgrind-memcheck)
3840                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3841                 ;;
3842         esac
3843     ;;
3844     msvc)
3845         # Check whether the current MSVC version needs the C99 converter.
3846         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3847         # support enough of C99 to build ffmpeg. Default to the new
3848         # behaviour if the regexp was unable to match anything, since this
3849         # successfully parses the version number of existing supported
3850         # versions that require the converter (MSVC 2010 and 2012).
3851         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3852         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3853             cc_default="cl"
3854             cxx_default="cl"
3855         else
3856             cc_default="c99wrap cl"
3857             cxx_default="c99wrap cl"
3858         fi
3859         ld_default="$source_path/compat/windows/mslink"
3860         nm_default="dumpbin -symbols"
3861         ar_default="lib"
3862         case "$arch" in
3863         arm*)
3864             as_default="armasm"
3865             ;;
3866         esac
3867         target_os_default="win32"
3868         # Use a relative path for TMPDIR. This makes sure all the
3869         # ffconf temp files are written with a relative path, avoiding
3870         # issues with msys/win32 path conversion for MSVC parameters
3871         # such as -Fo<file> or -out:<file>.
3872         TMPDIR=.
3873     ;;
3874     icl)
3875         cc_default="icl"
3876         ld_default="xilink"
3877         nm_default="dumpbin -symbols"
3878         ar_default="xilib"
3879         target_os_default="win32"
3880         TMPDIR=.
3881     ;;
3882     gcov)
3883         add_cflags  -fprofile-arcs -ftest-coverage
3884         add_ldflags -fprofile-arcs -ftest-coverage
3885     ;;
3886     llvm-cov)
3887         add_cflags -fprofile-arcs -ftest-coverage
3888         add_ldflags --coverage
3889     ;;
3890     hardened)
3891         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3892         add_cflags   -fno-strict-overflow -fstack-protector-all
3893         add_ldflags  -Wl,-z,relro -Wl,-z,now
3894         add_cflags   -fPIE
3895         add_ldexeflags -fPIE -pie
3896     ;;
3897     ?*)
3898         die "Unknown toolchain $toolchain"
3899     ;;
3900 esac
3901
3902 test -n "$cross_prefix" && enable cross_compile
3903
3904 if enabled cross_compile; then
3905     test -n "$arch" && test -n "$target_os" ||
3906         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3907 fi
3908
3909 ar_default="${cross_prefix}${ar_default}"
3910 cc_default="${cross_prefix}${cc_default}"
3911 cxx_default="${cross_prefix}${cxx_default}"
3912 nm_default="${cross_prefix}${nm_default}"
3913 pkg_config_default="${cross_prefix}${pkg_config_default}"
3914 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3915     ranlib_default="${cross_prefix}${ranlib_default} -D"
3916 else
3917     ranlib_default="${cross_prefix}${ranlib_default}"
3918 fi
3919 strip_default="${cross_prefix}${strip_default}"
3920 windres_default="${cross_prefix}${windres_default}"
3921
3922 sysinclude_default="${sysroot}/usr/include"
3923
3924 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3925     target_exec target_os x86asmexe nvcc
3926 enabled cross_compile || host_cc_default=$cc
3927 set_default host_cc
3928
3929 pkg_config_fail_message=""
3930 if ! $pkg_config --version >/dev/null 2>&1; then
3931     warn "$pkg_config not found, library detection may fail."
3932     pkg_config=false
3933 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3934     pkg_config_fail_message="
3935 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3936 fi
3937
3938 if test $doxygen != $doxygen_default && \
3939   ! $doxygen --version >/dev/null 2>&1; then
3940     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3941 fi
3942
3943 exesuf() {
3944     case $1 in
3945         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3946     esac
3947 }
3948
3949 EXESUF=$(exesuf $target_os)
3950 HOSTEXESUF=$(exesuf $host_os)
3951
3952 # set temporary file name
3953 : ${TMPDIR:=$TEMPDIR}
3954 : ${TMPDIR:=$TMP}
3955 : ${TMPDIR:=/tmp}
3956
3957 if [ -n "$tempprefix" ] ; then
3958     mktemp(){
3959         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3960         echo "$tmpname"
3961         mkdir "$tmpname"
3962     }
3963 elif ! check_cmd mktemp -u XXXXXX; then
3964     # simple replacement for missing mktemp
3965     # NOT SAFE FOR GENERAL USE
3966     mktemp(){
3967         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3968         echo "$tmpname"
3969         mkdir "$tmpname"
3970     }
3971 fi
3972
3973 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3974     die "Unable to create temporary directory in $TMPDIR."
3975
3976 tmpfile(){
3977     tmp="${FFTMPDIR}/test"$2
3978     (set -C; exec > $tmp) 2> /dev/null ||
3979         die "Unable to create temporary file in $FFTMPDIR."
3980     eval $1=$tmp
3981 }
3982
3983 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3984 trap 'exit 2' INT
3985
3986 tmpfile TMPASM .asm
3987 tmpfile TMPC   .c
3988 tmpfile TMPCPP .cpp
3989 tmpfile TMPE   $EXESUF
3990 tmpfile TMPH   .h
3991 tmpfile TMPM   .m
3992 tmpfile TMPO   .o
3993 tmpfile TMPS   .S
3994 tmpfile TMPSH  .sh
3995 tmpfile TMPV   .ver
3996
3997 unset -f mktemp
3998
3999 chmod +x $TMPE
4000
4001 # make sure we can execute files in $TMPDIR
4002 cat > $TMPSH 2>> $logfile <<EOF
4003 #! /bin/sh
4004 EOF
4005 chmod +x $TMPSH >> $logfile 2>&1
4006 if ! $TMPSH >> $logfile 2>&1; then
4007     cat <<EOF
4008 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4009 variable to another directory and make sure that it is not mounted noexec.
4010 EOF
4011     die "Sanity test failed."
4012 fi
4013
4014 armasm_flags(){
4015     for flag; do
4016         case $flag in
4017             # Filter out MSVC cl.exe options from cflags that shouldn't
4018             # be passed to gas-preprocessor
4019             -M[TD]*)                                            ;;
4020             *)                  echo $flag                      ;;
4021         esac
4022    done
4023 }
4024
4025 ccc_flags(){
4026     for flag; do
4027         case $flag in
4028             -std=c99)           echo -c99                       ;;
4029             -mcpu=*)            echo -arch ${flag#*=}           ;;
4030             -mieee)             echo -ieee                      ;;
4031             -O*|-fast)          echo $flag                      ;;
4032             -fno-math-errno)    echo -assume nomath_errno       ;;
4033             -g)                 echo -g3                        ;;
4034             -Wall)              echo -msg_enable level2         ;;
4035             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4036             -Wl,*)              echo $flag                      ;;
4037             -f*|-W*)                                            ;;
4038             *)                  echo $flag                      ;;
4039         esac
4040    done
4041 }
4042
4043 cparser_flags(){
4044     for flag; do
4045         case $flag in
4046             -Wno-switch)             echo -Wno-switch-enum ;;
4047             -Wno-format-zero-length) ;;
4048             -Wdisabled-optimization) ;;
4049             -Wno-pointer-sign)       echo -Wno-other ;;
4050             *)                       echo $flag ;;
4051         esac
4052     done
4053 }
4054
4055 msvc_common_flags(){
4056     for flag; do
4057         case $flag in
4058             # In addition to specifying certain flags under the compiler
4059             # specific filters, they must be specified here as well or else the
4060             # generic catch all at the bottom will print the original flag.
4061             -Wall)                ;;
4062             -Wextra)              ;;
4063             -std=c99)             ;;
4064             # Common flags
4065             -fomit-frame-pointer) ;;
4066             -g)                   echo -Z7 ;;
4067             -fno-math-errno)      ;;
4068             -fno-common)          ;;
4069             -fno-signed-zeros)    ;;
4070             -fPIC)                ;;
4071             -mthumb)              ;;
4072             -march=*)             ;;
4073             -lz)                  echo zlib.lib ;;
4074             -lx264)               echo libx264.lib ;;
4075             -lstdc++)             ;;
4076             -l*)                  echo ${flag#-l}.lib ;;
4077             -LARGEADDRESSAWARE)   echo $flag ;;
4078             -L*)                  echo -libpath:${flag#-L} ;;
4079             *)                    echo $flag ;;
4080         esac
4081     done
4082 }
4083
4084 msvc_flags(){
4085     msvc_common_flags "$@"
4086     for flag; do
4087         case $flag in
4088             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4089                                        -wd4554 ;;
4090             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4091                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4092                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4093                                        -wd4307 \
4094                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4095         esac
4096     done
4097 }
4098
4099 icl_flags(){
4100     msvc_common_flags "$@"
4101     for flag; do
4102         case $flag in
4103             # Despite what Intel's documentation says -Wall, which is supported
4104             # on Windows, does enable remarks so disable them here.
4105             -Wall)                echo $flag -Qdiag-disable:remark ;;
4106             -std=c99)             echo -Qstd=c99 ;;
4107             -flto)                echo -ipo ;;
4108         esac
4109     done
4110 }
4111
4112 icc_flags(){
4113     for flag; do
4114         case $flag in
4115             -flto)                echo -ipo ;;
4116             *)                    echo $flag ;;
4117         esac
4118     done
4119 }
4120
4121 pgi_flags(){
4122     for flag; do
4123         case $flag in
4124             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4125             -fomit-frame-pointer) echo -Mnoframe ;;
4126             -g)                   echo -gopt ;;
4127             *)                    echo $flag ;;
4128         esac
4129     done
4130 }
4131
4132 suncc_flags(){
4133     for flag; do
4134         case $flag in
4135             -march=*|-mcpu=*)
4136                 case "${flag#*=}" in
4137                     native)                   echo -xtarget=native       ;;
4138                     v9|niagara)               echo -xarch=sparc          ;;
4139                     ultrasparc)               echo -xarch=sparcvis       ;;
4140                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4141                     i586|pentium)             echo -xchip=pentium        ;;
4142                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4143                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4144                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4145                     pentium4*)          echo -xtarget=pentium4           ;;
4146                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4147                     *-sse3)             echo -xarch=sse3                 ;;
4148                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4149                     bonnell)                   echo -xarch=ssse3         ;;
4150                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4151                     westmere)                  echo -xtarget=westmere    ;;
4152                     silvermont)                echo -xarch=sse4_2        ;;
4153                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4154                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4155                                                echo -xarch=avx           ;;
4156                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4157                     btver1)                    echo -xarch=amdsse4a      ;;
4158                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4159                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4160                     k8|opteron|athlon64|athlon-fx)
4161                                                echo -xarch=sse2a         ;;
4162                     athlon*)                   echo -xarch=pentium_proa  ;;
4163                 esac
4164                 ;;
4165             -std=c99)             echo -xc99              ;;
4166             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4167             -fPIC)                echo -KPIC -xcode=pic32 ;;
4168             -W*,*)                echo $flag              ;;
4169             -f*-*|-W*|-mimpure-text)                      ;;
4170             -shared)              echo -G                 ;;
4171             *)                    echo $flag              ;;
4172         esac
4173     done
4174 }
4175
4176 tms470_flags(){
4177     for flag; do
4178         case $flag in
4179             -march=*|-mcpu=*)
4180                 case "${flag#*=}" in
4181                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4182                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4183                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4184                     armv6*|arm11*)          echo -mv=6   ;;
4185                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4186                                             echo -mv=5e  ;;
4187                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4188                 esac
4189                 ;;
4190             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4191             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4192             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4193             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4194             -msoft-float)   echo --float_support=vfplib       ;;
4195             -O[0-3]|-mf=*)  echo $flag                        ;;
4196             -g)             echo -g -mn                       ;;
4197             -pds=*)         echo $flag                        ;;
4198             -D*|-I*)        echo $flag                        ;;
4199             --gcc|--abi=*)  echo $flag                        ;;
4200             -me)            echo $flag                        ;;
4201         esac
4202     done
4203 }
4204
4205 probe_cc(){
4206     pfx=$1
4207     _cc=$2
4208     first=$3
4209
4210     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4211     unset _ld_o _ldflags _ld_lib _ld_path
4212     unset _depflags _DEPCMD _DEPFLAGS
4213     _flags_filter=echo
4214
4215     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4216         true # no-op to avoid reading stdin in following checks
4217     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4218         _type=llvm_gcc
4219         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4220         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4221         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4222         _cflags_speed='-O3'
4223         _cflags_size='-Os'
4224     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4225         _type=gcc
4226         gcc_version=$($_cc --version | head -n1)
4227         gcc_basever=$($_cc -dumpversion)
4228         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4229         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4230         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4231         case $gcc_basever in
4232             2) ;;
4233             2.*) ;;
4234             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4235         esac
4236         if [ "$first" = true ]; then
4237             case $gcc_basever in
4238                 4.2*)
4239                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4240             esac
4241         fi
4242         _cflags_speed='-O3'
4243         _cflags_size='-Os'
4244     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4245         _type=icc
4246         _ident=$($_cc --version | head -n1)
4247         _depflags='-MMD'
4248         _cflags_speed='-O3'
4249         _cflags_size='-Os'
4250         _cflags_noopt='-O1'
4251         _flags_filter=icc_flags
4252     elif $_cc -v 2>&1 | grep -q xlc; then
4253         _type=xlc
4254         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4255         _cflags_speed='-O5'
4256         _cflags_size='-O5 -qcompact'
4257     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4258         _type=ccc
4259         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4260         _DEPFLAGS='-M'
4261         _cflags_speed='-fast'
4262         _cflags_size='-O1'
4263         _flags_filter=ccc_flags
4264     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4265         test -d "$sysroot" || die "No valid sysroot specified."
4266         _type=armcc
4267         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4268         armcc_conf="$PWD/armcc.conf"
4269         $_cc --arm_linux_configure                 \
4270              --arm_linux_config_file="$armcc_conf" \
4271              --configure_sysroot="$sysroot"        \
4272              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4273              die "Error creating armcc configuration file."
4274         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4275         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4276         as_default="${cross_prefix}gcc"
4277         _depflags='-MMD'
4278         _cflags_speed='-O3'
4279         _cflags_size='-Os'
4280     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4281         _type=tms470
4282         _ident=$($_cc -version | head -n1 | tr -s ' ')
4283         _flags='--gcc --abi=eabi -me'
4284         _cc_e='-ppl -fe=$@'
4285         _cc_o='-fe=$@'
4286         _depflags='-ppa -ppd=$(@:.o=.d)'
4287         _cflags_speed='-O3 -mf=5'
4288         _cflags_size='-O3 -mf=2'
4289         _flags_filter=tms470_flags
4290     elif $_cc -v 2>&1 | grep -q clang; then
4291         _type=clang
4292         _ident=$($_cc --version 2>/dev/null | head -n1)
4293         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4294         _cflags_speed='-O3'
4295         _cflags_size='-Oz'
4296     elif $_cc -V 2>&1 | grep -q Sun; then
4297         _type=suncc
4298         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4299         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4300         _DEPFLAGS='-xM1 -xc99'
4301         _ldflags='-std=c99'
4302         _cflags_speed='-O5'
4303         _cflags_size='-O5 -xspace'
4304         _flags_filter=suncc_flags
4305     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4306         _type=pathscale
4307         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4308         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4309         _cflags_speed='-O2'
4310         _cflags_size='-Os'
4311         _flags_filter='filter_out -Wdisabled-optimization'
4312     elif $_cc -v 2>&1 | grep -q Open64; then
4313         _type=open64
4314         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4315         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4316         _cflags_speed='-O2'
4317         _cflags_size='-Os'
4318         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4319     elif $_cc -V 2>&1 | grep -q Portland; then
4320         _type=pgi
4321         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4322         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4323         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4324         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4325         _cflags_noopt="-O"
4326         _flags_filter=pgi_flags
4327     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4328         _type=armasm
4329         _ident=$($_cc | head -n1)
4330         # 4509: "This form of conditional instruction is deprecated"
4331         _flags="-nologo -ignore 4509"
4332         _flags_filter=armasm_flags
4333     elif $_cc 2>&1 | grep -q Intel; then
4334         _type=icl
4335         _ident=$($_cc 2>&1 | head -n1)
4336         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4337         # Not only is O3 broken on 13.x+ but it is slower on all previous
4338         # versions (tested) as well.
4339         _cflags_speed="-O2"
4340         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4341         if $_cc 2>&1 | grep -q Linker; then
4342             _ld_o='-out:$@'
4343         else
4344             _ld_o='-Fe$@'
4345         fi
4346         _cc_o='-Fo$@'
4347         _cc_e='-P'
4348         _flags_filter=icl_flags
4349         _ld_lib='lib%.a'
4350         _ld_path='-libpath:'
4351         # -Qdiag-error to make icl error when seeing certain unknown arguments
4352         _flags='-nologo -Qdiag-error:4044,10157'
4353         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4354         # with MSVC which enables it by default.
4355         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4356         disable stripping
4357     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4358         # lld can emulate multiple different linkers; in ms link.exe mode,
4359         # the -? parameter gives the help output which contains an identifyable
4360         # string, while it gives an error in other modes.
4361         _type=lld-link
4362         # The link.exe mode doesn't have a switch for getting the version,
4363         # but we can force it back to gnu mode and get the version from there.
4364         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4365         _ld_o='-out:$@'
4366         _flags_filter=msvc_flags
4367         _ld_lib='lib%.a'
4368         _ld_path='-libpath:'
4369     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4370         _type=msvc
4371         _ident=$($_cc 2>&1 | head -n1)
4372         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4373         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4374         _cflags_speed="-O2"
4375         _cflags_size="-O1"
4376         _cflags_noopt="-O1"
4377         if $_cc -nologo- 2>&1 | grep -q Linker; then
4378             _ld_o='-out:$@'
4379         else
4380             _ld_o='-Fe$@'
4381         fi
4382         _cc_o='-Fo$@'
4383         _cc_e='-P -Fi$@'
4384         _flags_filter=msvc_flags
4385         _ld_lib='lib%.a'
4386         _ld_path='-libpath:'
4387         _flags='-nologo'
4388         disable stripping
4389     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4390         _type=cparser
4391         _ident=$($_cc --version | head -n1)
4392         _depflags='-MMD'
4393         _cflags_speed='-O4'
4394         _cflags_size='-O2'
4395         _flags_filter=cparser_flags
4396     fi
4397
4398     eval ${pfx}_type=\$_type
4399     eval ${pfx}_ident=\$_ident
4400 }
4401
4402 set_ccvars(){
4403     eval ${1}_C=\${_cc_c-\${${1}_C}}
4404     eval ${1}_E=\${_cc_e-\${${1}_E}}
4405     eval ${1}_O=\${_cc_o-\${${1}_O}}
4406
4407     if [ -n "$_depflags" ]; then
4408         eval ${1}_DEPFLAGS=\$_depflags
4409     else
4410         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4411         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4412         eval DEP${1}FLAGS=\$_flags
4413     fi
4414 }
4415
4416 probe_cc cc "$cc" "true"
4417 cflags_filter=$_flags_filter
4418 cflags_speed=$_cflags_speed
4419 cflags_size=$_cflags_size
4420 cflags_noopt=$_cflags_noopt
4421 add_cflags $_flags $_cflags
4422 cc_ldflags=$_ldflags
4423 set_ccvars CC
4424 set_ccvars CXX
4425
4426 probe_cc hostcc "$host_cc"
4427 host_cflags_filter=$_flags_filter
4428 host_cflags_speed=$_cflags_speed
4429 add_host_cflags  $_flags $_cflags
4430 set_ccvars HOSTCC
4431
4432 test -n "$cc_type" && enable $cc_type ||
4433     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4434
4435 : ${as_default:=$cc}
4436 : ${objcc_default:=$cc}
4437 : ${dep_cc_default:=$cc}
4438 : ${ld_default:=$cc}
4439 : ${host_ld_default:=$host_cc}
4440 set_default ar as objcc dep_cc ld ln_s host_ld windres
4441
4442 probe_cc as "$as"
4443 asflags_filter=$_flags_filter
4444 add_asflags $_flags $_cflags
4445 set_ccvars AS
4446
4447 probe_cc objcc "$objcc"
4448 objcflags_filter=$_flags_filter
4449 add_objcflags $_flags $_cflags
4450 set_ccvars OBJC
4451
4452 probe_cc ld "$ld"
4453 ldflags_filter=$_flags_filter
4454 add_ldflags $_flags $_ldflags
4455 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4456 LD_O=${_ld_o-$LD_O}
4457 LD_LIB=${_ld_lib-$LD_LIB}
4458 LD_PATH=${_ld_path-$LD_PATH}
4459
4460 probe_cc hostld "$host_ld"
4461 host_ldflags_filter=$_flags_filter
4462 add_host_ldflags $_flags $_ldflags
4463 HOSTLD_O=${_ld_o-$HOSTLD_O}
4464
4465 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4466     probe_cc depcc "$dep_cc"
4467     CCDEP=${_DEPCMD:-$DEPCMD}
4468     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4469     DEPCCFLAGS=$_flags
4470 fi
4471
4472 if $ar 2>&1 | grep -q Microsoft; then
4473     arflags="-nologo"
4474     ar_o='-out:$@'
4475 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4476     arflags="rq"
4477     ar_o='$@'
4478 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4479     arflags='-Xany -r -c'
4480     ar_o='$@'
4481 elif $ar 2>&1 | grep -q "\[D\] "; then
4482     arflags="rcD"
4483     ar_o='$@'
4484 else
4485     arflags="rc"
4486     ar_o='$@'
4487 fi
4488
4489 add_cflags $extra_cflags
4490 add_cxxflags $extra_cxxflags
4491 add_objcflags $extra_objcflags
4492 add_asflags $extra_cflags
4493
4494 if test -n "$sysroot"; then
4495     case "$cc_type" in
4496         gcc|llvm_gcc|clang)
4497             add_cppflags --sysroot="$sysroot"
4498             add_ldflags --sysroot="$sysroot"
4499 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4500             add_cppflags -isysroot "$sysroot"
4501             add_ldflags -isysroot "$sysroot"
4502         ;;
4503         tms470)
4504             add_cppflags -I"$sysinclude"
4505             add_ldflags  --sysroot="$sysroot"
4506         ;;
4507     esac
4508 fi
4509
4510 if test "$cpu" = host; then
4511     enabled cross_compile &&
4512         die "--cpu=host makes no sense when cross-compiling."
4513
4514     case "$cc_type" in
4515         gcc|llvm_gcc)
4516             check_native(){
4517                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4518                 sed -n "/cc1.*$1=/{
4519                             s/.*$1=\\([^ ]*\\).*/\\1/
4520                             p
4521                             q
4522                         }" $TMPE
4523             }
4524             cpu=$(check_native -march || check_native -mcpu)
4525         ;;
4526         clang)
4527             check_native(){
4528                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4529                 sed -n "/cc1.*-target-cpu /{
4530                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4531                             p
4532                             q
4533                         }" $TMPE
4534             }
4535             cpu=$(check_native -march)
4536         ;;
4537     esac
4538
4539     test "${cpu:-host}" = host &&
4540         die "--cpu=host not supported with compiler $cc"
4541 fi
4542
4543 # Deal with common $arch aliases
4544 case "$arch" in
4545     aarch64|arm64)
4546         arch="aarch64"
4547     ;;
4548     arm*|iPad*|iPhone*)
4549         arch="arm"
4550     ;;
4551     mips*|IP*)
4552         case "$arch" in
4553         *el)
4554             add_cppflags -EL
4555             add_ldflags -EL
4556         ;;
4557         *eb)
4558             add_cppflags -EB
4559             add_ldflags -EB
4560         ;;
4561         esac
4562         arch="mips"
4563     ;;
4564     parisc*|hppa*)
4565         arch="parisc"
4566     ;;
4567     "Power Macintosh"|ppc*|powerpc*)
4568         arch="ppc"
4569     ;;
4570     s390|s390x)
4571         arch="s390"
4572     ;;
4573     sh4|sh)
4574         arch="sh4"
4575     ;;
4576     sun4*|sparc*)
4577         arch="sparc"
4578     ;;
4579     tilegx|tile-gx)
4580         arch="tilegx"
4581     ;;
4582     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4583         arch="x86"
4584     ;;
4585 esac
4586
4587 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4588 enable $arch
4589
4590 # Add processor-specific flags
4591 if enabled aarch64; then
4592
4593     case $cpu in
4594         armv*)
4595             cpuflags="-march=$cpu"
4596         ;;
4597         *)
4598             cpuflags="-mcpu=$cpu"
4599         ;;
4600     esac
4601
4602 elif enabled alpha; then
4603
4604     cpuflags="-mcpu=$cpu"
4605
4606 elif enabled arm; then
4607
4608     check_arm_arch() {
4609         check_cpp_condition stddef.h \
4610             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4611             $cpuflags
4612     }
4613
4614     probe_arm_arch() {
4615         if   check_arm_arch 4;        then echo armv4
4616         elif check_arm_arch 4T;       then echo armv4t
4617         elif check_arm_arch 5;        then echo armv5
4618         elif check_arm_arch 5E;       then echo armv5e
4619         elif check_arm_arch 5T;       then echo armv5t
4620         elif check_arm_arch 5TE;      then echo armv5te
4621         elif check_arm_arch 5TEJ;     then echo armv5te
4622         elif check_arm_arch 6;        then echo armv6
4623         elif check_arm_arch 6J;       then echo armv6j
4624         elif check_arm_arch 6K;       then echo armv6k
4625         elif check_arm_arch 6Z;       then echo armv6z
4626         elif check_arm_arch 6ZK;      then echo armv6zk
4627         elif check_arm_arch 6T2;      then echo armv6t2
4628         elif check_arm_arch 7;        then echo armv7
4629         elif check_arm_arch 7A  7_A;  then echo armv7-a
4630         elif check_arm_arch 7S;       then echo armv7-a
4631         elif check_arm_arch 7R  7_R;  then echo armv7-r
4632         elif check_arm_arch 7M  7_M;  then echo armv7-m
4633         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4634         elif check_arm_arch 8A  8_A;  then echo armv8-a
4635         fi
4636     }
4637
4638     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4639
4640     case $cpu in
4641         armv*)
4642             cpuflags="-march=$cpu"
4643             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4644         ;;
4645         *)
4646             cpuflags="-mcpu=$cpu"
4647             case $cpu in
4648                 cortex-a*)                               subarch=armv7a  ;;
4649                 cortex-r*)                               subarch=armv7r  ;;
4650                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4651                 arm11*)                                  subarch=armv6   ;;
4652                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4653                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4654                 *)                             subarch=$(probe_arm_arch) ;;
4655             esac
4656         ;;
4657     esac
4658
4659     case "$subarch" in
4660         armv5t*)    enable fast_clz                ;;
4661         armv[6-8]*)
4662             enable fast_clz
4663             disabled fast_unaligned || enable fast_unaligned
4664             ;;
4665     esac
4666
4667 elif enabled avr32; then
4668
4669     case $cpu in
4670         ap7[02]0[0-2])
4671             subarch="avr32_ap"
4672             cpuflags="-mpart=$cpu"
4673         ;;
4674         ap)
4675             subarch="avr32_ap"
4676             cpuflags="-march=$cpu"
4677         ;;
4678         uc3[ab]*)
4679             subarch="avr32_uc"
4680             cpuflags="-mcpu=$cpu"
4681         ;;
4682         uc)
4683             subarch="avr32_uc"
4684             cpuflags="-march=$cpu"
4685         ;;
4686     esac
4687
4688 elif enabled bfin; then
4689
4690     cpuflags="-mcpu=$cpu"
4691
4692 elif enabled mips; then
4693
4694     cpuflags="-march=$cpu"
4695
4696     if [ "$cpu" != "generic" ]; then
4697         disable mips32r2
4698         disable mips32r5
4699         disable mips64r2
4700         disable mips32r6
4701         disable mips64r6
4702         disable loongson2
4703         disable loongson3
4704
4705         case $cpu in
4706             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4707                 enable mips32r2
4708                 disable msa
4709             ;;
4710             p5600|i6400|p6600)
4711                 disable mipsdsp
4712                 disable mipsdspr2
4713             ;;
4714             loongson*)
4715                 enable loongson2
4716                 enable loongson3
4717                 enable local_aligned_8 local_aligned_16 local_aligned_32
4718                 enable simd_align_16
4719                 enable fast_64bit
4720                 enable fast_clz
4721                 enable fast_cmov
4722                 enable fast_unaligned
4723                 disable aligned_stack
4724                 disable mipsfpu
4725                 disable mipsdsp
4726                 disable mipsdspr2
4727                 case $cpu in
4728                     loongson3*)
4729                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4730                     ;;
4731                     loongson2e)
4732                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4733                     ;;
4734                     loongson2f)
4735                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4736                     ;;
4737                 esac
4738             ;;
4739             *)
4740                 # Unknown CPU. Disable everything.
4741                 warn "unknown CPU. Disabling all MIPS optimizations."
4742                 disable mipsfpu
4743                 disable mipsdsp
4744                 disable mipsdspr2
4745                 disable msa
4746                 disable mmi
4747             ;;
4748         esac
4749
4750         case $cpu in
4751             24kc)
4752                 disable mipsfpu
4753                 disable mipsdsp
4754                 disable mipsdspr2
4755             ;;
4756             24kf*)
4757                 disable mipsdsp
4758                 disable mipsdspr2
4759             ;;
4760             24kec|34kc|1004kc)
4761                 disable mipsfpu
4762                 disable mipsdspr2
4763             ;;
4764             24kef*|34kf*|1004kf*)
4765                 disable mipsdspr2
4766             ;;
4767             74kc)
4768                 disable mipsfpu
4769             ;;
4770             p5600)
4771                 enable mips32r5
4772                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4773             ;;
4774             i6400)
4775                 enable mips64r6
4776                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4777             ;;
4778             p6600)
4779                 enable mips64r6
4780                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4781             ;;
4782         esac
4783     else
4784         # We do not disable anything. Is up to the user to disable the unwanted features.
4785         warn 'generic cpu selected'
4786     fi
4787
4788 elif enabled ppc; then
4789
4790     disable ldbrx
4791
4792     case $(tolower $cpu) in
4793         601|ppc601|powerpc601)
4794             cpuflags="-mcpu=601"
4795             disable altivec
4796         ;;
4797         603*|ppc603*|powerpc603*)
4798             cpuflags="-mcpu=603"
4799             disable altivec
4800         ;;
4801         604*|ppc604*|powerpc604*)
4802             cpuflags="-mcpu=604"
4803             disable altivec
4804         ;;
4805         g3|75*|ppc75*|powerpc75*)
4806             cpuflags="-mcpu=750"
4807             disable altivec
4808         ;;
4809         g4|745*|ppc745*|powerpc745*)
4810             cpuflags="-mcpu=7450"
4811             disable vsx
4812         ;;
4813         74*|ppc74*|powerpc74*)
4814             cpuflags="-mcpu=7400"
4815             disable vsx
4816         ;;
4817         g5|970|ppc970|powerpc970)
4818             cpuflags="-mcpu=970"
4819             disable vsx
4820         ;;
4821         power[3-6]*)
4822             cpuflags="-mcpu=$cpu"
4823             disable vsx
4824         ;;
4825         power[7-8]*)
4826             cpuflags="-mcpu=$cpu"
4827         ;;
4828         cell)
4829             cpuflags="-mcpu=cell"
4830             enable ldbrx
4831             disable vsx
4832         ;;
4833         e500mc)
4834             cpuflags="-mcpu=e500mc"
4835             disable altivec
4836         ;;
4837         e500v2)
4838             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4839             disable altivec
4840             disable dcbzl
4841         ;;
4842         e500)
4843             cpuflags="-mcpu=8540 -mhard-float"
4844             disable altivec
4845             disable dcbzl
4846         ;;
4847     esac
4848
4849 elif enabled sparc; then
4850
4851     case $cpu in
4852         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4853             cpuflags="-mcpu=$cpu"
4854         ;;
4855         ultrasparc*|niagara[234])
4856             cpuflags="-mcpu=$cpu"
4857         ;;
4858     esac
4859
4860 elif enabled x86; then
4861
4862     case $cpu in
4863         i[345]86|pentium)
4864             cpuflags="-march=$cpu"
4865             disable i686
4866             disable mmx
4867         ;;
4868         # targets that do NOT support nopl and conditional mov (cmov)
4869         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4870             cpuflags="-march=$cpu"
4871             disable i686
4872         ;;
4873         # targets that do support nopl and conditional mov (cmov)
4874         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4875         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4876         |amdfam10|barcelona|b[dt]ver*|znver*)
4877             cpuflags="-march=$cpu"
4878             enable i686
4879             enable fast_cmov
4880         ;;
4881         # targets that do support conditional mov but on which it's slow
4882         pentium4|pentium4m|prescott|nocona)
4883             cpuflags="-march=$cpu"
4884             enable i686
4885             disable fast_cmov
4886         ;;
4887     esac
4888
4889 fi
4890
4891 if [ "$cpu" != generic ]; then
4892     add_cflags  $cpuflags
4893     add_asflags $cpuflags
4894     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4895 fi
4896
4897 # compiler sanity check
4898 check_exec <<EOF
4899 int main(void){ return 0; }
4900 EOF
4901 if test "$?" != 0; then
4902     echo "$cc is unable to create an executable file."
4903     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4904         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4905         echo "Only do this if you know what cross compiling means."
4906     fi
4907     die "C compiler test failed."
4908 fi
4909
4910 add_cppflags -D_ISOC99_SOURCE
4911 add_cxxflags -D__STDC_CONSTANT_MACROS
4912 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4913
4914 # some compilers silently accept -std=c11, so we also need to check that the
4915 # version macro is defined properly
4916 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4917     add_cflags -std=c11 ||
4918     check_cflags -std=c99
4919
4920 check_cppflags -D_FILE_OFFSET_BITS=64
4921 c