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
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --disable-alsa           disable ALSA support [autodetect]
 205   --disable-appkit         disable Apple AppKit framework [autodetect]
 206   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 207   --enable-avisynth        enable reading of AviSynth script files [no]
 208   --disable-bzlib          disable bzlib [autodetect]
 209   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 210   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 211   --enable-frei0r          enable frei0r video filtering [no]
 212   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 213                            if openssl, librtmp or gmp is not used [no]
 214   --enable-gmp             enable gmp, needed for rtmp(t)e support
 215                            if openssl or librtmp is not used [no]
 216   --enable-gnutls          enable gnutls, needed for https support
 217                            if openssl is not used [no]
 218   --disable-iconv          disable iconv [autodetect]
 219   --enable-jni             enable JNI support [no]
 220   --enable-ladspa          enable LADSPA audio filtering [no]
 221   --enable-libass          enable libass subtitles rendering,
 222                            needed for subtitles and ass filter [no]
 223   --enable-libbluray       enable BluRay reading using libbluray [no]
 224   --enable-libbs2b         enable bs2b DSP library [no]
 225   --enable-libcaca         enable textual display using libcaca [no]
 226   --enable-libcelt         enable CELT decoding via libcelt [no]
 227   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 228   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 229                            and libraw1394 [no]
 230   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 231   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 232   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 233   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 234   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 235   --enable-libgme          enable Game Music Emu via libgme [no]
 236   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 237   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 238   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 239   --enable-libjack         enable JACK audio sound server [no]
 240   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 241   --enable-libmodplug      enable ModPlug via libmodplug [no]
 242   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 243   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 244   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 245   --enable-libopencv       enable video filtering via libopencv [no]
 246   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 247   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 248   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 249   --enable-libopus         enable Opus de/encoding via libopus [no]
 250   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 251   --enable-librsvg         enable SVG rasterization via librsvg [no]
 252   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 253   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 254   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 255   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 256   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 257   --enable-libsoxr         enable Include libsoxr resampling [no]
 258   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 259   --enable-libssh          enable SFTP protocol via libssh [no]
 260   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 261   --enable-libtheora       enable Theora encoding via libtheora [no]
 262   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 263   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 264   --enable-libvidstab      enable video stabilization using vid.stab [no]
 265   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 266   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 267   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 268                            native implementation exists [no]
 269   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 270   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 271   --enable-libwebp         enable WebP encoding via libwebp [no]
 272   --enable-libx264         enable H.264 encoding via x264 [no]
 273   --enable-libx265         enable HEVC encoding via x265 [no]
 274   --enable-libxavs         enable AVS encoding via xavs [no]
 275   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 276   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 277   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 278   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 279   --enable-libxvid         enable Xvid encoding via xvidcore,
 280                            native MPEG-4/Xvid encoder exists [no]
 281   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 282   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 283   --enable-libzmq          enable message passing via libzmq [no]
 284   --enable-libzvbi         enable teletext support via libzvbi [no]
 285   --enable-lv2             enable LV2 audio filtering [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 processing [no]
 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-amf            disable AMF video encoding code [autodetect]
 307   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 308   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 309   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 310   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 311   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 312   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 313   --enable-libdrm          enable DRM code (Linux) [no]
 314   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 315   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 316   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 317   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 318   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 319   --enable-omx             enable OpenMAX IL code [no]
 320   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 321   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 322   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 323   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 324   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 325   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 326
 327 Toolchain options:
 328   --arch=ARCH              select architecture [$arch]
 329   --cpu=CPU                select the minimum required CPU (affects
 330                            instruction selection, may crash on older CPUs)
 331   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 332   --progs-suffix=SUFFIX    program name suffix []
 333   --enable-cross-compile   assume a cross-compiler is used
 334   --sysroot=PATH           root of cross-build tree
 335   --sysinclude=PATH        location of cross-build system headers
 336   --target-os=OS           compiler targets OS [$target_os]
 337   --target-exec=CMD        command to run executables on target
 338   --target-path=DIR        path to view of build directory on target
 339   --target-samples=DIR     path to samples directory on target
 340   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 341   --toolchain=NAME         set tool defaults according to NAME
 342   --nm=NM                  use nm tool NM [$nm_default]
 343   --ar=AR                  use archive tool AR [$ar_default]
 344   --as=AS                  use assembler AS [$as_default]
 345   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 346   --strip=STRIP            use strip tool STRIP [$strip_default]
 347   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 348   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 349   --cc=CC                  use C compiler CC [$cc_default]
 350   --cxx=CXX                use C compiler CXX [$cxx_default]
 351   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 352   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 353   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 354   --ld=LD                  use linker LD [$ld_default]
 355   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 356   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 357   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 358   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 359   --host-cc=HOSTCC         use host C compiler HOSTCC
 360   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 361   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 362   --host-ld=HOSTLD         use host linker HOSTLD
 363   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 364   --host-libs=HLIBS        use libs HLIBS when linking for host
 365   --host-os=OS             compiler host OS [$target_os]
 366   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 367   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 368   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 369   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 370   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 371   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 372   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 373   --extra-version=STRING   version string suffix []
 374   --optflags=OPTFLAGS      override optimization-related compiler flags
 375   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 376   --build-suffix=SUFFIX    library name suffix []
 377   --enable-pic             build position-independent code
 378   --enable-thumb           compile for Thumb instruction set
 379   --enable-lto             use link-time optimization
 380   --env="ENV=override"     override the environment variables
 381
 382 Advanced options (experts only):
 383   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 384   --custom-allocator=NAME  use a supported custom allocator
 385   --disable-symver         disable symbol versioning
 386   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 387   --disable-safe-bitstream-reader
 388                            disable buffer boundary checking in bitreaders
 389                            (faster, but may crash)
 390   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 391
 392 Optimization options (experts only):
 393   --disable-asm            disable all assembly optimizations
 394   --disable-altivec        disable AltiVec optimizations
 395   --disable-vsx            disable VSX optimizations
 396   --disable-power8         disable POWER8 optimizations
 397   --disable-amd3dnow       disable 3DNow! optimizations
 398   --disable-amd3dnowext    disable 3DNow! extended optimizations
 399   --disable-mmx            disable MMX optimizations
 400   --disable-mmxext         disable MMXEXT optimizations
 401   --disable-sse            disable SSE optimizations
 402   --disable-sse2           disable SSE2 optimizations
 403   --disable-sse3           disable SSE3 optimizations
 404   --disable-ssse3          disable SSSE3 optimizations
 405   --disable-sse4           disable SSE4 optimizations
 406   --disable-sse42          disable SSE4.2 optimizations
 407   --disable-avx            disable AVX optimizations
 408   --disable-xop            disable XOP optimizations
 409   --disable-fma3           disable FMA3 optimizations
 410   --disable-fma4           disable FMA4 optimizations
 411   --disable-avx2           disable AVX2 optimizations
 412   --disable-aesni          disable AESNI optimizations
 413   --disable-armv5te        disable armv5te optimizations
 414   --disable-armv6          disable armv6 optimizations
 415   --disable-armv6t2        disable armv6t2 optimizations
 416   --disable-vfp            disable VFP optimizations
 417   --disable-neon           disable NEON optimizations
 418   --disable-inline-asm     disable use of inline assembly
 419   --disable-x86asm         disable use of standalone x86 assembly
 420   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 421   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 422   --disable-msa            disable MSA optimizations
 423   --disable-mipsfpu        disable floating point MIPS optimizations
 424   --disable-mmi            disable Loongson SIMD optimizations
 425   --disable-fast-unaligned consider unaligned accesses slow
 426
 427 Developer options (useful when working on FFmpeg itself):
 428   --disable-debug          disable debugging symbols
 429   --enable-debug=LEVEL     set the debug level [$debuglevel]
 430   --disable-optimizations  disable compiler optimizations
 431   --enable-extra-warnings  enable more compiler warnings
 432   --disable-stripping      disable stripping of executables and shared libraries
 433   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 434                            2 causes a slowdown at runtime.
 435   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 436   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 437                            leaks and errors, using the specified valgrind binary.
 438                            Cannot be combined with --target-exec
 439   --enable-ftrapv          Trap arithmetic overflows
 440   --samples=PATH           location of test samples for FATE, if not set use
 441                            \$FATE_SAMPLES at make invocation time.
 442   --enable-neon-clobber-test check NEON registers for clobbering (should be
 443                            used only for debugging purposes)
 444   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 445                            should be used only for debugging purposes)
 446   --enable-random          randomly enable/disable components
 447   --disable-random
 448   --enable-random=LIST     randomly enable/disable specific components or
 449   --disable-random=LIST    component groups. LIST is a comma-separated list
 450                            of NAME[:PROB] entries where NAME is a component
 451                            (group) and PROB the probability associated with
 452                            NAME (default 0.5).
 453   --random-seed=VALUE      seed value for --enable/disable-random
 454   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 455                            (only applies to --disable-optimizations builds)
 456   --enable-osfuzz          Enable building fuzzer tool
 457   --libfuzzer=PATH         path to libfuzzer
 458   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 459                            in the name) of tests whose result is ignored
 460   --enable-linux-perf      enable Linux Performance Monitor API
 461
 462 NOTE: Object files are built at the place where configure is launched.
 463 EOF
 464   exit 0
 465 }
 466
 467 if test -t 1 && which tput >/dev/null 2>&1; then
 468     ncolors=$(tput colors)
 469     if test -n "$ncolors" && test $ncolors -ge 8; then
 470         bold_color=$(tput bold)
 471         warn_color=$(tput setaf 3)
 472         error_color=$(tput setaf 1)
 473         reset_color=$(tput sgr0)
 474     fi
 475     # 72 used instead of 80 since that's the default of pr
 476     ncols=$(tput cols)
 477 fi
 478 : ${ncols:=72}
 479
 480 log(){
 481     echo "$@" >> $logfile
 482 }
 483
 484 log_file(){
 485     log BEGIN $1
 486     pr -n -t $1 >> $logfile
 487     log END $1
 488 }
 489
 490 warn(){
 491     log "WARNING: $*"
 492     WARNINGS="${WARNINGS}WARNING: $*\n"
 493 }
 494
 495 die(){
 496     log "$@"
 497     echo "$error_color$bold_color$@$reset_color"
 498     cat <<EOF
 499
 500 If you think configure made a mistake, make sure you are using the latest
 501 version from Git.  If the latest version fails, report the problem to the
 502 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 503 EOF
 504     if disabled logging; then
 505         cat <<EOF
 506 Rerun configure with logging enabled (do not use --disable-logging), and
 507 include the log this produces with your report.
 508 EOF
 509     else
 510         cat <<EOF
 511 Include the log file "$logfile" produced by configure as this will help
 512 solve the problem.
 513 EOF
 514     fi
 515     exit 1
 516 }
 517
 518 # Avoid locale weirdness, besides we really just want to translate ASCII.
 519 toupper(){
 520     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 521 }
 522
 523 tolower(){
 524     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 525 }
 526
 527 c_escape(){
 528     echo "$*" | sed 's/["\\]/\\\0/g'
 529 }
 530
 531 sh_quote(){
 532     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 533     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 534     echo "$v"
 535 }
 536
 537 cleanws(){
 538     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 539 }
 540
 541 filter(){
 542     pat=$1
 543     shift
 544     for v; do
 545         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 546     done
 547 }
 548
 549 filter_out(){
 550     pat=$1
 551     shift
 552     for v; do
 553         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 554     done
 555 }
 556
 557 map(){
 558     m=$1
 559     shift
 560     for v; do eval $m; done
 561 }
 562
 563 add_suffix(){
 564     suffix=$1
 565     shift
 566     for v; do echo ${v}${suffix}; done
 567 }
 568
 569 set_all(){
 570     value=$1
 571     shift
 572     for var in $*; do
 573         eval $var=$value
 574     done
 575 }
 576
 577 set_weak(){
 578     value=$1
 579     shift
 580     for var; do
 581         eval : \${$var:=$value}
 582     done
 583 }
 584
 585 sanitize_var_name(){
 586     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 587 }
 588
 589 set_sanitized(){
 590     var=$1
 591     shift
 592     eval $(sanitize_var_name "$var")='$*'
 593 }
 594
 595 get_sanitized(){
 596     eval echo \$$(sanitize_var_name "$1")
 597 }
 598
 599 pushvar(){
 600     for pvar in $*; do
 601         eval level=\${${pvar}_level:=0}
 602         eval ${pvar}_${level}="\$$pvar"
 603         eval ${pvar}_level=$(($level+1))
 604     done
 605 }
 606
 607 popvar(){
 608     for pvar in $*; do
 609         eval level=\${${pvar}_level:-0}
 610         test $level = 0 && continue
 611         eval level=$(($level-1))
 612         eval $pvar="\${${pvar}_${level}}"
 613         eval ${pvar}_level=$level
 614         eval unset ${pvar}_${level}
 615     done
 616 }
 617
 618 request(){
 619     for var in $*; do
 620         eval ${var}_requested=yes
 621         eval $var=
 622     done
 623 }
 624
 625 enable(){
 626     set_all yes $*
 627 }
 628
 629 disable(){
 630     set_all no $*
 631 }
 632
 633 enable_weak(){
 634     set_weak yes $*
 635 }
 636
 637 disable_weak(){
 638     set_weak no $*
 639 }
 640
 641 enable_sanitized(){
 642     for var; do
 643         enable $(sanitize_var_name $var)
 644     done
 645 }
 646
 647 disable_sanitized(){
 648     for var; do
 649         disable $(sanitize_var_name $var)
 650     done
 651 }
 652
 653 do_enable_deep(){
 654     for var; do
 655         enabled $var && continue
 656         eval sel="\$${var}_select"
 657         eval sgs="\$${var}_suggest"
 658         pushvar var sgs
 659         enable_deep $sel
 660         popvar sgs
 661         enable_deep_weak $sgs
 662         popvar var
 663     done
 664 }
 665
 666 enable_deep(){
 667     do_enable_deep $*
 668     enable $*
 669 }
 670
 671 enable_deep_weak(){
 672     for var; do
 673         disabled $var && continue
 674         pushvar var
 675         do_enable_deep $var
 676         popvar var
 677         enable_weak $var
 678     done
 679 }
 680
 681 requested(){
 682     test "${1#!}" = "$1" && op="=" || op="!="
 683     eval test "x\$${1#!}_requested" $op "xyes"
 684 }
 685
 686 enabled(){
 687     test "${1#!}" = "$1" && op="=" || op="!="
 688     eval test "x\$${1#!}" $op "xyes"
 689 }
 690
 691 disabled(){
 692     test "${1#!}" = "$1" && op="=" || op="!="
 693     eval test "x\$${1#!}" $op "xno"
 694 }
 695
 696 enabled_all(){
 697     for opt; do
 698         enabled $opt || return 1
 699     done
 700 }
 701
 702 disabled_all(){
 703     for opt; do
 704         disabled $opt || return 1
 705     done
 706 }
 707
 708 enabled_any(){
 709     for opt; do
 710         enabled $opt && return 0
 711     done
 712 }
 713
 714 disabled_any(){
 715     for opt; do
 716         disabled $opt && return 0
 717     done
 718     return 1
 719 }
 720
 721 set_default(){
 722     for opt; do
 723         eval : \${$opt:=\$${opt}_default}
 724     done
 725 }
 726
 727 is_in(){
 728     value=$1
 729     shift
 730     for var in $*; do
 731         [ $var = $value ] && return 0
 732     done
 733     return 1
 734 }
 735
 736 check_deps(){
 737     for cfg; do
 738         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 739         disabled ${cfg}_checking && continue
 740         enable ${cfg}_checking
 741
 742         eval dep_all="\$${cfg}_deps"
 743         eval dep_any="\$${cfg}_deps_any"
 744         eval dep_con="\$${cfg}_conflict"
 745         eval dep_sel="\$${cfg}_select"
 746         eval dep_sgs="\$${cfg}_suggest"
 747         eval dep_ifa="\$${cfg}_if"
 748         eval dep_ifn="\$${cfg}_if_any"
 749
 750         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 751         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 752         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 753
 754         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 755         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 756         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 757         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 758         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 759         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 760
 761         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 762
 763         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 764             # filter out library deps, these do not belong in extralibs
 765             is_in $dep $LIBRARY_LIST && continue
 766             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 767         done
 768
 769         disable ${cfg}_checking
 770     done
 771 }
 772
 773 print_config(){
 774     pfx=$1
 775     files=$2
 776     shift 2
 777     map 'eval echo "$v \${$v:-no}"' "$@" |
 778     awk "BEGIN { split(\"$files\", files) }
 779         {
 780             c = \"$pfx\" toupper(\$1);
 781             v = \$2;
 782             sub(/yes/, 1, v);
 783             sub(/no/,  0, v);
 784             for (f in files) {
 785                 file = files[f];
 786                 if (file ~ /\\.h\$/) {
 787                     printf(\"#define %s %d\\n\", c, v) >>file;
 788                 } else if (file ~ /\\.asm\$/) {
 789                     printf(\"%%define %s %d\\n\", c, v) >>file;
 790                 } else if (file ~ /\\.mak\$/) {
 791                     n = -v ? \"\" : \"!\";
 792                     printf(\"%s%s=yes\\n\", n, c) >>file;
 793                 } else if (file ~ /\\.texi\$/) {
 794                     pre = -v ? \"\" : \"@c \";
 795                     yesno = \$2;
 796                     c2 = tolower(c);
 797                     gsub(/_/, \"-\", c2);
 798                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 799                 }
 800             }
 801         }"
 802 }
 803
 804 print_enabled(){
 805     suf=$1
 806     shift
 807     for v; do
 808         enabled $v && printf "%s\n" ${v%$suf}
 809     done
 810 }
 811
 812 append(){
 813     var=$1
 814     shift
 815     eval "$var=\"\$$var $*\""
 816 }
 817
 818 prepend(){
 819     var=$1
 820     shift
 821     eval "$var=\"$* \$$var\""
 822 }
 823
 824 unique(){
 825     var=$1
 826     uniq_list=""
 827     for tok in $(eval echo \$$var); do
 828         uniq_list="$(filter_out $tok $uniq_list) $tok"
 829     done
 830     eval "$var=\"${uniq_list}\""
 831 }
 832
 833 resolve(){
 834     var=$1
 835     tmpvar=
 836     for entry in $(eval echo \$$var); do
 837         tmpvar="$tmpvar $(eval echo \$${entry})"
 838     done
 839     eval "$var=\"${tmpvar}\""
 840 }
 841
 842 add_cppflags(){
 843     append CPPFLAGS "$@"
 844 }
 845
 846 add_cflags(){
 847     append CFLAGS $($cflags_filter "$@")
 848 }
 849
 850 add_cflags_headers(){
 851     append CFLAGS_HEADERS $($cflags_filter "$@")
 852 }
 853
 854 add_cxxflags(){
 855     append CXXFLAGS $($cflags_filter "$@")
 856 }
 857
 858 add_asflags(){
 859     append ASFLAGS $($asflags_filter "$@")
 860 }
 861
 862 add_objcflags(){
 863     append OBJCFLAGS $($objcflags_filter "$@")
 864 }
 865
 866 add_ldflags(){
 867     append LDFLAGS $($ldflags_filter "$@")
 868 }
 869
 870 add_ldexeflags(){
 871     append LDEXEFLAGS $($ldflags_filter "$@")
 872 }
 873
 874 add_ldsoflags(){
 875     append LDSOFLAGS $($ldflags_filter "$@")
 876 }
 877
 878 add_stripflags(){
 879     append ASMSTRIPFLAGS "$@"
 880 }
 881
 882 add_extralibs(){
 883     prepend extralibs $($ldflags_filter "$@")
 884 }
 885
 886 add_host_cppflags(){
 887     append host_cppflags "$@"
 888 }
 889
 890 add_host_cflags(){
 891     append host_cflags $($host_cflags_filter "$@")
 892 }
 893
 894 add_host_ldflags(){
 895     append host_ldflags $($host_ldflags_filter "$@")
 896 }
 897
 898 add_compat(){
 899     append compat_objs $1
 900     shift
 901     map 'add_cppflags -D$v' "$@"
 902 }
 903
 904 check_cmd(){
 905     log "$@"
 906     "$@" >> $logfile 2>&1
 907 }
 908
 909 check_stat(){
 910     log check_stat "$@"
 911     stat "$1" >> $logfile 2>&1
 912 }
 913
 914 cc_o(){
 915     eval printf '%s\\n' $CC_O
 916 }
 917
 918 cc_e(){
 919     eval printf '%s\\n' $CC_E
 920 }
 921
 922 check_cc(){
 923     log check_cc "$@"
 924     cat > $TMPC
 925     log_file $TMPC
 926     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 927 }
 928
 929 check_cxx(){
 930     log check_cxx "$@"
 931     cat > $TMPCPP
 932     log_file $TMPCPP
 933     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 934 }
 935
 936 check_objcc(){
 937     log check_objcc "$@"
 938     cat > $TMPM
 939     log_file $TMPM
 940     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 941 }
 942
 943 check_cpp(){
 944     log check_cpp "$@"
 945     cat > $TMPC
 946     log_file $TMPC
 947     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 948 }
 949
 950 as_o(){
 951     eval printf '%s\\n' $AS_O
 952 }
 953
 954 check_as(){
 955     log check_as "$@"
 956     cat > $TMPS
 957     log_file $TMPS
 958     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 959 }
 960
 961 check_inline_asm(){
 962     log check_inline_asm "$@"
 963     name="$1"
 964     code="$2"
 965     shift 2
 966     disable $name
 967     check_cc "$@" <<EOF && enable $name
 968 void foo(void){ __asm__ volatile($code); }
 969 EOF
 970 }
 971
 972 check_inline_asm_flags(){
 973     log check_inline_asm_flags "$@"
 974     name="$1"
 975     code="$2"
 976     flags=''
 977     shift 2
 978     while [ "$1" != "" ]; do
 979       append flags $1
 980       shift
 981     done;
 982     disable $name
 983     cat > $TMPC <<EOF
 984 void foo(void){ __asm__ volatile($code); }
 985 EOF
 986     log_file $TMPC
 987     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 988     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 989 }
 990
 991 check_insn(){
 992     log check_insn "$@"
 993     check_inline_asm ${1}_inline "\"$2\""
 994     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 995 }
 996
 997 check_x86asm(){
 998     log check_x86asm "$@"
 999     echo "$1" > $TMPS
1000     log_file $TMPS
1001     shift 1
1002     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1003 }
1004
1005 ld_o(){
1006     eval printf '%s\\n' $LD_O
1007 }
1008
1009 check_ld(){
1010     log check_ld "$@"
1011     type=$1
1012     shift 1
1013     flags=$(filter_out '-l*|*.so' $@)
1014     libs=$(filter '-l*|*.so' $@)
1015     check_$type $($cflags_filter $flags) || return
1016     flags=$($ldflags_filter $flags)
1017     libs=$($ldflags_filter $libs)
1018     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1019 }
1020
1021 print_include(){
1022     hdr=$1
1023     test "${hdr%.h}" = "${hdr}" &&
1024         echo "#include $hdr"    ||
1025         echo "#include <$hdr>"
1026 }
1027
1028 check_code(){
1029     log check_code "$@"
1030     check=$1
1031     headers=$2
1032     code=$3
1033     shift 3
1034     {
1035         for hdr in $headers; do
1036             print_include $hdr
1037         done
1038         echo "int main(void) { $code; return 0; }"
1039     } | check_$check "$@"
1040 }
1041
1042 check_cppflags(){
1043     log check_cppflags "$@"
1044     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1045 #include <stdlib.h>
1046 EOF
1047 }
1048
1049 test_cflags(){
1050     log test_cflags "$@"
1051     set -- $($cflags_filter "$@")
1052     check_cc "$@" <<EOF
1053 int x;
1054 EOF
1055 }
1056
1057 check_cflags(){
1058     log check_cflags "$@"
1059     test_cflags "$@" && add_cflags "$@"
1060 }
1061
1062 check_cxxflags(){
1063     log check_cxxflags "$@"
1064     set -- $($cflags_filter "$@")
1065     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1066 int x;
1067 EOF
1068 }
1069
1070 test_objcflags(){
1071     log test_objcflags "$@"
1072     set -- $($objcflags_filter "$@")
1073     check_objcc "$@" <<EOF
1074 int x;
1075 EOF
1076 }
1077
1078 check_objcflags(){
1079     log check_objcflags "$@"
1080     test_objcflags "$@" && add_objcflags "$@"
1081 }
1082
1083 test_ldflags(){
1084     log test_ldflags "$@"
1085     set -- $($ldflags_filter "$@")
1086     check_ld "cc" "$@" <<EOF
1087 int main(void){ return 0; }
1088 EOF
1089 }
1090
1091 check_ldflags(){
1092     log check_ldflags "$@"
1093     test_ldflags "$@" && add_ldflags "$@"
1094 }
1095
1096 test_stripflags(){
1097     log test_stripflags "$@"
1098     # call check_cc to get a fresh TMPO
1099     check_cc <<EOF
1100 int main(void) { return 0; }
1101 EOF
1102     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1103 }
1104
1105 check_stripflags(){
1106     log check_stripflags "$@"
1107     test_stripflags "$@" && add_stripflags "$@"
1108 }
1109
1110 check_header(){
1111     log check_header "$@"
1112     headers=$1
1113     shift
1114     disable_sanitized $headers
1115     {
1116         for hdr in $headers; do
1117             print_include $hdr
1118         done
1119         echo "int x;"
1120     } | check_cpp "$@" && enable_sanitized $headers
1121 }
1122
1123 check_header_objcc(){
1124     log check_header_objcc "$@"
1125     rm -f -- "$TMPO"
1126     header=$1
1127     shift
1128     disable_sanitized $header
1129     {
1130        echo "#include <$header>"
1131        echo "int main(void) { return 0; }"
1132     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1133 }
1134
1135 check_apple_framework(){
1136     log check_apple_framework "$@"
1137     framework="$1"
1138     name="$(tolower $framework)"
1139     header="${framework}/${framework}.h"
1140     disable $name
1141     check_header_objcc $header &&
1142         enable $name && eval ${name}_extralibs='"-framework $framework"'
1143 }
1144
1145 check_func(){
1146     log check_func "$@"
1147     func=$1
1148     shift
1149     disable $func
1150     check_ld "cc" "$@" <<EOF && enable $func
1151 extern int $func();
1152 int main(void){ $func(); }
1153 EOF
1154 }
1155
1156 check_complexfunc(){
1157     log check_complexfunc "$@"
1158     func=$1
1159     narg=$2
1160     shift 2
1161     test $narg = 2 && args="f, g" || args="f * I"
1162     disable $func
1163     check_ld "cc" "$@" <<EOF && enable $func
1164 #include <complex.h>
1165 #include <math.h>
1166 float foo(complex float f, complex float g) { return $func($args); }
1167 int main(void){ return (int) foo; }
1168 EOF
1169 }
1170
1171 check_mathfunc(){
1172     log check_mathfunc "$@"
1173     func=$1
1174     narg=$2
1175     shift 2
1176     test $narg = 2 && args="f, g" || args="f"
1177     disable $func
1178     check_ld "cc" "$@" <<EOF && enable $func
1179 #include <math.h>
1180 float foo(float f, float g) { return $func($args); }
1181 int main(void){ return (int) foo; }
1182 EOF
1183 }
1184
1185 check_func_headers(){
1186     log check_func_headers "$@"
1187     headers=$1
1188     funcs=$2
1189     shift 2
1190     {
1191         for hdr in $headers; do
1192             print_include $hdr
1193         done
1194         echo "#include <stdint.h>"
1195         for func in $funcs; do
1196             echo "long check_$func(void) { return (long) $func; }"
1197         done
1198         echo "int main(void) { int ret = 0;"
1199         # LTO could optimize out the test functions without this
1200         for func in $funcs; do
1201             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1202         done
1203         echo "return ret; }"
1204     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1205 }
1206
1207 check_class_headers_cpp(){
1208     log check_class_headers_cpp "$@"
1209     headers=$1
1210     classes=$2
1211     shift 2
1212     {
1213         for hdr in $headers; do
1214             echo "#include <$hdr>"
1215         done
1216         echo "int main(void) { "
1217         i=1
1218         for class in $classes; do
1219             echo "$class obj$i;"
1220             i=$(expr $i + 1)
1221         done
1222         echo "return 0; }"
1223     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1224 }
1225
1226 check_cpp_condition(){
1227     log check_cpp_condition "$@"
1228     header=$1
1229     condition=$2
1230     shift 2
1231     check_cpp "$@" <<EOF
1232 #include <$header>
1233 #if !($condition)
1234 #error "unsatisfied condition: $condition"
1235 #endif
1236 EOF
1237 }
1238
1239 test_cflags_cc(){
1240     log test_cflags_cc "$@"
1241     flags=$1
1242     header=$2
1243     condition=$3
1244     shift 3
1245     set -- $($cflags_filter "$flags")
1246     check_cc "$@" <<EOF
1247 #include <$header>
1248 #if !($condition)
1249 #error "unsatisfied condition: $condition"
1250 #endif
1251 EOF
1252 }
1253
1254 check_lib(){
1255     log check_lib "$@"
1256     name="$1"
1257     headers="$2"
1258     funcs="$3"
1259     shift 3
1260     disable $name
1261     check_func_headers "$headers" "$funcs" "$@" &&
1262         enable $name && eval ${name}_extralibs="\$@"
1263 }
1264
1265 check_lib_cpp(){
1266     log check_lib_cpp "$@"
1267     name="$1"
1268     headers="$2"
1269     classes="$3"
1270     shift 3
1271     disable $name
1272     check_class_headers_cpp "$headers" "$classes" "$@" &&
1273         enable $name && eval ${name}_extralibs="\$@"
1274 }
1275
1276 test_pkg_config(){
1277     log test_pkg_config "$@"
1278     name="$1"
1279     pkg_version="$2"
1280     pkg="${2%% *}"
1281     headers="$3"
1282     funcs="$4"
1283     shift 4
1284     disable $name
1285     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1286     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1287     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1288     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1289         enable $name &&
1290         set_sanitized "${name}_cflags"    $pkg_cflags &&
1291         set_sanitized "${name}_extralibs" $pkg_libs
1292 }
1293
1294 check_pkg_config(){
1295     log check_pkg_config "$@"
1296     name="$1"
1297     test_pkg_config "$@" &&
1298         eval add_cflags \$${name}_cflags
1299 }
1300
1301 check_exec(){
1302     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1303 }
1304
1305 check_exec_crash(){
1306     log check_exec_crash "$@"
1307     code=$(cat)
1308
1309     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1310     # are safe but may not be available everywhere.  Thus we use
1311     # raise(SIGTERM) instead.  The check is run in a subshell so we
1312     # can redirect the "Terminated" message from the shell.  SIGBUS
1313     # is not defined by standard C so it is used conditionally.
1314
1315     (check_exec "$@") >> $logfile 2>&1 <<EOF
1316 #include <signal.h>
1317 static void sighandler(int sig){
1318     raise(SIGTERM);
1319 }
1320 int foo(void){
1321     $code
1322 }
1323 int (*func_ptr)(void) = foo;
1324 int main(void){
1325     signal(SIGILL, sighandler);
1326     signal(SIGFPE, sighandler);
1327     signal(SIGSEGV, sighandler);
1328 #ifdef SIGBUS
1329     signal(SIGBUS, sighandler);
1330 #endif
1331     return func_ptr();
1332 }
1333 EOF
1334 }
1335
1336 check_type(){
1337     log check_type "$@"
1338     headers=$1
1339     type=$2
1340     shift 2
1341     disable_sanitized "$type"
1342     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1343 }
1344
1345 check_struct(){
1346     log check_struct "$@"
1347     headers=$1
1348     struct=$2
1349     member=$3
1350     shift 3
1351     disable_sanitized "${struct}_${member}"
1352     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1353         enable_sanitized "${struct}_${member}"
1354 }
1355
1356 check_builtin(){
1357     log check_builtin "$@"
1358     name=$1
1359     headers=$2
1360     builtin=$3
1361     shift 3
1362     disable "$name"
1363     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1364 }
1365
1366 check_compile_assert(){
1367     log check_compile_assert "$@"
1368     name=$1
1369     headers=$2
1370     condition=$3
1371     shift 3
1372     disable "$name"
1373     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1374 }
1375
1376 require(){
1377     log require "$@"
1378     name_version="$1"
1379     name="${1%% *}"
1380     headers="$2"
1381     func="$3"
1382     shift 3
1383     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1384 }
1385
1386 require_cpp(){
1387     name="$1"
1388     headers="$2"
1389     classes="$3"
1390     shift 3
1391     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1392 }
1393
1394 require_header(){
1395     log require_header "$@"
1396     headers="$1"
1397     shift
1398     check_header "$headers" "$@" || die "ERROR: $headers not found"
1399 }
1400
1401 require_cpp_condition(){
1402     log require_cpp_condition "$@"
1403     header="$1"
1404     condition="$2"
1405     shift 2
1406     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1407 }
1408
1409 require_pkg_config(){
1410     log require_pkg_config "$@"
1411     pkg_version="$2"
1412     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1413 }
1414
1415 hostcc_e(){
1416     eval printf '%s\\n' $HOSTCC_E
1417 }
1418
1419 hostcc_o(){
1420     eval printf '%s\\n' $HOSTCC_O
1421 }
1422
1423 check_host_cc(){
1424     log check_host_cc "$@"
1425     cat > $TMPC
1426     log_file $TMPC
1427     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1428 }
1429
1430 check_host_cpp(){
1431     log check_host_cpp "$@"
1432     cat > $TMPC
1433     log_file $TMPC
1434     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1435 }
1436
1437 check_host_cppflags(){
1438     log check_host_cppflags "$@"
1439     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1440 #include <stdlib.h>
1441 EOF
1442 }
1443
1444 check_host_cflags(){
1445     log check_host_cflags "$@"
1446     set -- $($host_cflags_filter "$@")
1447     check_host_cc "$@" <<EOF && append host_cflags "$@"
1448 int x;
1449 EOF
1450 }
1451
1452 check_host_cpp_condition(){
1453     log check_host_cpp_condition "$@"
1454     header=$1
1455     condition=$2
1456     shift 2
1457     check_host_cpp "$@" <<EOF
1458 #include <$header>
1459 #if !($condition)
1460 #error "unsatisfied condition: $condition"
1461 #endif
1462 EOF
1463 }
1464
1465 cp_if_changed(){
1466     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1467     mkdir -p "$(dirname $2)"
1468     cp -f "$1" "$2"
1469 }
1470
1471 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1472 # system-dependent things.
1473
1474 AVCODEC_COMPONENTS="
1475     bsfs
1476     decoders
1477     encoders
1478     hwaccels
1479     parsers
1480 "
1481
1482 AVDEVICE_COMPONENTS="
1483     indevs
1484     outdevs
1485 "
1486
1487 AVFILTER_COMPONENTS="
1488     filters
1489 "
1490
1491 AVFORMAT_COMPONENTS="
1492     demuxers
1493     muxers
1494     protocols
1495 "
1496
1497 COMPONENT_LIST="
1498     $AVCODEC_COMPONENTS
1499     $AVDEVICE_COMPONENTS
1500     $AVFILTER_COMPONENTS
1501     $AVFORMAT_COMPONENTS
1502 "
1503
1504 EXAMPLE_LIST="
1505     avio_dir_cmd_example
1506     avio_reading_example
1507     decode_audio_example
1508     decode_video_example
1509     demuxing_decoding_example
1510     encode_audio_example
1511     encode_video_example
1512     extract_mvs_example
1513     filter_audio_example
1514     filtering_audio_example
1515     filtering_video_example
1516     http_multiclient_example
1517     hw_decode_example
1518     metadata_example
1519     muxing_example
1520     qsvdec_example
1521     remuxing_example
1522     resampling_audio_example
1523     scaling_video_example
1524     transcode_aac_example
1525     transcoding_example
1526     vaapi_encode_example
1527 "
1528
1529 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1530     alsa
1531     appkit
1532     avfoundation
1533     bzlib
1534     coreimage
1535     iconv
1536     libxcb
1537     libxcb_shm
1538     libxcb_shape
1539     libxcb_xfixes
1540     lzma
1541     schannel
1542     sdl2
1543     securetransport
1544     sndio
1545     xlib
1546     zlib
1547 "
1548
1549 EXTERNAL_LIBRARY_GPL_LIST="
1550     avisynth
1551     frei0r
1552     libcdio
1553     librubberband
1554     libvidstab
1555     libx264
1556     libx265
1557     libxavs
1558     libxvid
1559 "
1560
1561 EXTERNAL_LIBRARY_NONFREE_LIST="
1562     decklink
1563     libndi_newtek
1564     libfdk_aac
1565     openssl
1566 "
1567
1568 EXTERNAL_LIBRARY_VERSION3_LIST="
1569     gmp
1570     libopencore_amrnb
1571     libopencore_amrwb
1572     libvmaf
1573     libvo_amrwbenc
1574     rkmpp
1575 "
1576
1577 EXTERNAL_LIBRARY_GPLV3_LIST="
1578     libsmbclient
1579 "
1580
1581 EXTERNAL_LIBRARY_LIST="
1582     $EXTERNAL_LIBRARY_GPL_LIST
1583     $EXTERNAL_LIBRARY_NONFREE_LIST
1584     $EXTERNAL_LIBRARY_VERSION3_LIST
1585     $EXTERNAL_LIBRARY_GPLV3_LIST
1586     chromaprint
1587     gcrypt
1588     gnutls
1589     jni
1590     ladspa
1591     libass
1592     libbluray
1593     libbs2b
1594     libcaca
1595     libcelt
1596     libdc1394
1597     libdrm
1598     libflite
1599     libfontconfig
1600     libfreetype
1601     libfribidi
1602     libgme
1603     libgsm
1604     libiec61883
1605     libilbc
1606     libjack
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     libvorbis
1630     libvpx
1631     libwavpack
1632     libwebp
1633     libxml2
1634     libzimg
1635     libzmq
1636     libzvbi
1637     lv2
1638     mediacodec
1639     openal
1640     opengl
1641 "
1642
1643 HWACCEL_AUTODETECT_LIBRARY_LIST="
1644     amf
1645     audiotoolbox
1646     crystalhd
1647     cuda
1648     cuvid
1649     d3d11va
1650     dxva2
1651     nvdec
1652     nvenc
1653     vaapi
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     opencl
1677 "
1678
1679 DOCUMENT_LIST="
1680     doc
1681     htmlpages
1682     manpages
1683     podpages
1684     txtpages
1685 "
1686
1687 FEATURE_LIST="
1688     ftrapv
1689     gray
1690     hardcoded_tables
1691     omx_rpi
1692     runtime_cpudetect
1693     safe_bitstream_reader
1694     shared
1695     small
1696     static
1697     swscale_alpha
1698 "
1699
1700 LIBRARY_LIST="
1701     avcodec
1702     avdevice
1703     avfilter
1704     avformat
1705     avresample
1706     avutil
1707     postproc
1708     swresample
1709     swscale
1710 "
1711
1712 LICENSE_LIST="
1713     gpl
1714     nonfree
1715     version3
1716 "
1717
1718 PROGRAM_LIST="
1719     ffplay
1720     ffprobe
1721     ffserver
1722     ffmpeg
1723 "
1724
1725 SUBSYSTEM_LIST="
1726     dct
1727     dwt
1728     error_resilience
1729     faan
1730     fast_unaligned
1731     fft
1732     lsp
1733     lzo
1734     mdct
1735     pixelutils
1736     network
1737     rdft
1738 "
1739
1740 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1741 CONFIG_LIST="
1742     $DOCUMENT_LIST
1743     $EXAMPLE_LIST
1744     $EXTERNAL_LIBRARY_LIST
1745     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1746     $HWACCEL_LIBRARY_LIST
1747     $HWACCEL_AUTODETECT_LIBRARY_LIST
1748     $FEATURE_LIST
1749     $LICENSE_LIST
1750     $LIBRARY_LIST
1751     $PROGRAM_LIST
1752     $SUBSYSTEM_LIST
1753     autodetect
1754     fontconfig
1755     linux_perf
1756     memory_poisoning
1757     neon_clobber_test
1758     ossfuzz
1759     pic
1760     thumb
1761     valgrind_backtrace
1762     xmm_clobber_test
1763     $COMPONENT_LIST
1764 "
1765
1766 THREADS_LIST="
1767     pthreads
1768     os2threads
1769     w32threads
1770 "
1771
1772 ATOMICS_LIST="
1773     atomics_gcc
1774     atomics_suncc
1775     atomics_win32
1776 "
1777
1778 AUTODETECT_LIBS="
1779     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1780     $HWACCEL_AUTODETECT_LIBRARY_LIST
1781     $THREADS_LIST
1782 "
1783
1784 ARCH_LIST="
1785     aarch64
1786     alpha
1787     arm
1788     avr32
1789     avr32_ap
1790     avr32_uc
1791     bfin
1792     ia64
1793     m68k
1794     mips
1795     mips64
1796     parisc
1797     ppc
1798     ppc64
1799     s390
1800     sh4
1801     sparc
1802     sparc64
1803     tilegx
1804     tilepro
1805     tomi
1806     x86
1807     x86_32
1808     x86_64
1809 "
1810
1811 ARCH_EXT_LIST_ARM="
1812     armv5te
1813     armv6
1814     armv6t2
1815     armv8
1816     neon
1817     vfp
1818     vfpv3
1819     setend
1820 "
1821
1822 ARCH_EXT_LIST_MIPS="
1823     mipsfpu
1824     mips32r2
1825     mips32r5
1826     mips64r2
1827     mips32r6
1828     mips64r6
1829     mipsdsp
1830     mipsdspr2
1831     msa
1832 "
1833
1834 ARCH_EXT_LIST_LOONGSON="
1835     loongson2
1836     loongson3
1837     mmi
1838 "
1839
1840 ARCH_EXT_LIST_X86_SIMD="
1841     aesni
1842     amd3dnow
1843     amd3dnowext
1844     avx
1845     avx2
1846     fma3
1847     fma4
1848     mmx
1849     mmxext
1850     sse
1851     sse2
1852     sse3
1853     sse4
1854     sse42
1855     ssse3
1856     xop
1857 "
1858
1859 ARCH_EXT_LIST_PPC="
1860     altivec
1861     dcbzl
1862     ldbrx
1863     power8
1864     ppc4xx
1865     vsx
1866 "
1867
1868 ARCH_EXT_LIST_X86="
1869     $ARCH_EXT_LIST_X86_SIMD
1870     cpunop
1871     i686
1872 "
1873
1874 ARCH_EXT_LIST="
1875     $ARCH_EXT_LIST_ARM
1876     $ARCH_EXT_LIST_PPC
1877     $ARCH_EXT_LIST_X86
1878     $ARCH_EXT_LIST_MIPS
1879     $ARCH_EXT_LIST_LOONGSON
1880 "
1881
1882 ARCH_FEATURES="
1883     aligned_stack
1884     fast_64bit
1885     fast_clz
1886     fast_cmov
1887     local_aligned
1888     simd_align_16
1889     simd_align_32
1890 "
1891
1892 BUILTIN_LIST="
1893     atomic_cas_ptr
1894     machine_rw_barrier
1895     MemoryBarrier
1896     mm_empty
1897     rdtsc
1898     sarestart
1899     sem_timedwait
1900     sync_val_compare_and_swap
1901 "
1902 HAVE_LIST_CMDLINE="
1903     inline_asm
1904     symver
1905     x86asm
1906 "
1907
1908 HAVE_LIST_PUB="
1909     bigendian
1910     fast_unaligned
1911 "
1912
1913 HEADERS_LIST="
1914     arpa_inet_h
1915     asm_types_h
1916     cdio_paranoia_h
1917     cdio_paranoia_paranoia_h
1918     cuda_h
1919     dispatch_dispatch_h
1920     dev_bktr_ioctl_bt848_h
1921     dev_bktr_ioctl_meteor_h
1922     dev_ic_bt8xx_h
1923     dev_video_bktr_ioctl_bt848_h
1924     dev_video_meteor_ioctl_meteor_h
1925     direct_h
1926     dirent_h
1927     dxgidebug_h
1928     dxva_h
1929     ES2_gl_h
1930     gsm_h
1931     io_h
1932     machine_ioctl_bt848_h
1933     machine_ioctl_meteor_h
1934     malloc_h
1935     opencv2_core_core_c_h
1936     OpenGL_gl3_h
1937     poll_h
1938     sys_param_h
1939     sys_resource_h
1940     sys_select_h
1941     sys_soundcard_h
1942     sys_time_h
1943     sys_un_h
1944     sys_videoio_h
1945     termios_h
1946     udplite_h
1947     unistd_h
1948     valgrind_valgrind_h
1949     windows_h
1950     winsock2_h
1951 "
1952
1953 INTRINSICS_LIST="
1954     intrinsics_neon
1955 "
1956
1957 COMPLEX_FUNCS="
1958     cabs
1959     cexp
1960 "
1961
1962 MATH_FUNCS="
1963     atanf
1964     atan2f
1965     cbrt
1966     cbrtf
1967     copysign
1968     cosf
1969     erf
1970     exp2
1971     exp2f
1972     expf
1973     hypot
1974     isfinite
1975     isinf
1976     isnan
1977     ldexpf
1978     llrint
1979     llrintf
1980     log2
1981     log2f
1982     log10f
1983     lrint
1984     lrintf
1985     powf
1986     rint
1987     round
1988     roundf
1989     sinf
1990     trunc
1991     truncf
1992 "
1993
1994 SYSTEM_FEATURES="
1995     atomics_native
1996     dos_paths
1997     libc_msvcrt
1998     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1999     section_data_rel_ro
2000     threads
2001     uwp
2002     winrt
2003 "
2004
2005 SYSTEM_FUNCS="
2006     access
2007     aligned_malloc
2008     arc4random
2009     clock_gettime
2010     closesocket
2011     CommandLineToArgvW
2012     fcntl
2013     getaddrinfo
2014     gethrtime
2015     getopt
2016     GetProcessAffinityMask
2017     GetProcessMemoryInfo
2018     GetProcessTimes
2019     getrusage
2020     GetSystemTimeAsFileTime
2021     gettimeofday
2022     glob
2023     glXGetProcAddress
2024     gmtime_r
2025     inet_aton
2026     isatty
2027     kbhit
2028     localtime_r
2029     lstat
2030     lzo1x_999_compress
2031     mach_absolute_time
2032     MapViewOfFile
2033     memalign
2034     mkstemp
2035     mmap
2036     mprotect
2037     nanosleep
2038     PeekNamedPipe
2039     posix_memalign
2040     pthread_cancel
2041     sched_getaffinity
2042     SecItemImport
2043     SetConsoleTextAttribute
2044     SetConsoleCtrlHandler
2045     setmode
2046     setrlimit
2047     Sleep
2048     strerror_r
2049     sysconf
2050     sysctl
2051     usleep
2052     UTGetOSTypeFromString
2053     VirtualAlloc
2054     wglGetProcAddress
2055 "
2056
2057 SYSTEM_LIBRARIES="
2058     vaapi_drm
2059     vaapi_x11
2060     vdpau_x11
2061     wincrypt
2062 "
2063
2064 TOOLCHAIN_FEATURES="
2065     as_arch_directive
2066     as_fpu_directive
2067     as_func
2068     as_object_arch
2069     asm_mod_q
2070     blocks_extension
2071     ebp_available
2072     ebx_available
2073     gnu_as
2074     gnu_windres
2075     ibm_asm
2076     inline_asm_direct_symbol_refs
2077     inline_asm_labels
2078     inline_asm_nonlocal_labels
2079     pragma_deprecated
2080     rsync_contimeout
2081     symver_asm_label
2082     symver_gnu_asm
2083     vfp_args
2084     xform_asm
2085     xmm_clobbers
2086 "
2087
2088 TYPES_LIST="
2089     CONDITION_VARIABLE_Ptr
2090     kCMVideoCodecType_HEVC
2091     socklen_t
2092     struct_addrinfo
2093     struct_group_source_req
2094     struct_ip_mreq_source
2095     struct_ipv6_mreq
2096     struct_msghdr_msg_flags
2097     struct_pollfd
2098     struct_rusage_ru_maxrss
2099     struct_sctp_event_subscribe
2100     struct_sockaddr_in6
2101     struct_sockaddr_sa_len
2102     struct_sockaddr_storage
2103     struct_stat_st_mtim_tv_nsec
2104     struct_v4l2_frmivalenum_discrete
2105 "
2106
2107 HAVE_LIST="
2108     $ARCH_EXT_LIST
2109     $(add_suffix _external $ARCH_EXT_LIST)
2110     $(add_suffix _inline   $ARCH_EXT_LIST)
2111     $ARCH_FEATURES
2112     $ATOMICS_LIST
2113     $BUILTIN_LIST
2114     $COMPLEX_FUNCS
2115     $HAVE_LIST_CMDLINE
2116     $HAVE_LIST_PUB
2117     $HEADERS_LIST
2118     $INTRINSICS_LIST
2119     $MATH_FUNCS
2120     $SYSTEM_FEATURES
2121     $SYSTEM_FUNCS
2122     $SYSTEM_LIBRARIES
2123     $THREADS_LIST
2124     $TOOLCHAIN_FEATURES
2125     $TYPES_LIST
2126     makeinfo
2127     makeinfo_html
2128     opencl_d3d11
2129     opencl_drm_arm
2130     opencl_dxva2
2131     opencl_vaapi_beignet
2132     opencl_vaapi_intel_media
2133     perl
2134     pod2man
2135     texi2html
2136 "
2137
2138 # options emitted with CONFIG_ prefix but not available on the command line
2139 CONFIG_EXTRA="
2140     aandcttables
2141     ac3dsp
2142     adts_header
2143     audio_frame_queue
2144     audiodsp
2145     blockdsp
2146     bswapdsp
2147     cabac
2148     cbs
2149     cbs_h264
2150     cbs_h265
2151     cbs_mpeg2
2152     dirac_parse
2153     dvprofile
2154     exif
2155     faandct
2156     faanidct
2157     fdctdsp
2158     flacdsp
2159     fmtconvert
2160     frame_thread_encoder
2161     g722dsp
2162     golomb
2163     gplv3
2164     h263dsp
2165     h264chroma
2166     h264dsp
2167     h264parse
2168     h264pred
2169     h264qpel
2170     hevcparse
2171     hpeldsp
2172     huffman
2173     huffyuvdsp
2174     huffyuvencdsp
2175     idctdsp
2176     iirfilter
2177     mdct15
2178     intrax8
2179     iso_media
2180     ividsp
2181     jpegtables
2182     lgplv3
2183     libx262
2184     llauddsp
2185     llviddsp
2186     llvidencdsp
2187     lpc
2188     lzf
2189     me_cmp
2190     mpeg_er
2191     mpegaudio
2192     mpegaudiodsp
2193     mpegaudioheader
2194     mpegvideo
2195     mpegvideoenc
2196     mss34dsp
2197     pixblockdsp
2198     qpeldsp
2199     qsv
2200     qsvdec
2201     qsvenc
2202     qsvvpp
2203     rangecoder
2204     riffdec
2205     riffenc
2206     rtpdec
2207     rtpenc_chain
2208     rv34dsp
2209     sinewin
2210     snappy
2211     srtp
2212     startcode
2213     texturedsp
2214     texturedspenc
2215     tpeldsp
2216     vaapi_1
2217     vaapi_encode
2218     vc1dsp
2219     videodsp
2220     vp3dsp
2221     vp56dsp
2222     vp8dsp
2223     wma_freqs
2224     wmv2dsp
2225 "
2226
2227 CMDLINE_SELECT="
2228     $ARCH_EXT_LIST
2229     $CONFIG_LIST
2230     $HAVE_LIST_CMDLINE
2231     $THREADS_LIST
2232     asm
2233     cross_compile
2234     debug
2235     extra_warnings
2236     logging
2237     lto
2238     optimizations
2239     rpath
2240     stripping
2241 "
2242
2243 PATHS_LIST="
2244     bindir
2245     datadir
2246     docdir
2247     incdir
2248     libdir
2249     mandir
2250     pkgconfigdir
2251     prefix
2252     shlibdir
2253     install_name_dir
2254 "
2255
2256 CMDLINE_SET="
2257     $PATHS_LIST
2258     ar
2259     arch
2260     as
2261     assert_level
2262     build_suffix
2263     cc
2264     objcc
2265     cpu
2266     cross_prefix
2267     custom_allocator
2268     cxx
2269     dep_cc
2270     doxygen
2271     env
2272     extra_version
2273     gas
2274     host_cc
2275     host_cflags
2276     host_extralibs
2277     host_ld
2278     host_ldflags
2279     host_os
2280     ignore_tests
2281     install
2282     ld
2283     ln_s
2284     logfile
2285     malloc_prefix
2286     nm
2287     optflags
2288     nvccflags
2289     pkg_config
2290     pkg_config_flags
2291     progs_suffix
2292     random_seed
2293     ranlib
2294     samples
2295     strip
2296     sws_max_filter_size
2297     sysinclude
2298     sysroot
2299     target_exec
2300     target_os
2301     target_path
2302     target_samples
2303     tempprefix
2304     toolchain
2305     valgrind
2306     x86asmexe
2307 "
2308
2309 CMDLINE_APPEND="
2310     extra_cflags
2311     extra_cxxflags
2312     extra_objcflags
2313     host_cppflags
2314 "
2315
2316 # code dependency declarations
2317
2318 # architecture extensions
2319
2320 armv5te_deps="arm"
2321 armv6_deps="arm"
2322 armv6t2_deps="arm"
2323 armv8_deps="aarch64"
2324 neon_deps_any="aarch64 arm"
2325 intrinsics_neon_deps="neon"
2326 vfp_deps_any="aarch64 arm"
2327 vfpv3_deps="vfp"
2328 setend_deps="arm"
2329
2330 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2331
2332 altivec_deps="ppc"
2333 dcbzl_deps="ppc"
2334 ldbrx_deps="ppc"
2335 ppc4xx_deps="ppc"
2336 vsx_deps="altivec"
2337 power8_deps="vsx"
2338
2339 loongson2_deps="mips"
2340 loongson3_deps="mips"
2341 mips32r2_deps="mips"
2342 mips32r5_deps="mips"
2343 mips32r6_deps="mips"
2344 mips64r2_deps="mips"
2345 mips64r6_deps="mips"
2346 mipsfpu_deps="mips"
2347 mipsdsp_deps="mips"
2348 mipsdspr2_deps="mips"
2349 mmi_deps="mips"
2350 msa_deps="mipsfpu"
2351
2352 cpunop_deps="i686"
2353 x86_64_select="i686"
2354 x86_64_suggest="fast_cmov"
2355
2356 amd3dnow_deps="mmx"
2357 amd3dnowext_deps="amd3dnow"
2358 i686_deps="x86"
2359 mmx_deps="x86"
2360 mmxext_deps="mmx"
2361 sse_deps="mmxext"
2362 sse2_deps="sse"
2363 sse3_deps="sse2"
2364 ssse3_deps="sse3"
2365 sse4_deps="ssse3"
2366 sse42_deps="sse4"
2367 aesni_deps="sse42"
2368 avx_deps="sse42"
2369 xop_deps="avx"
2370 fma3_deps="avx"
2371 fma4_deps="avx"
2372 avx2_deps="avx"
2373
2374 mmx_external_deps="x86asm"
2375 mmx_inline_deps="inline_asm x86"
2376 mmx_suggest="mmx_external mmx_inline"
2377
2378 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2379     eval dep=\$${ext}_deps
2380     eval ${ext}_external_deps='"${dep}_external"'
2381     eval ${ext}_inline_deps='"${dep}_inline"'
2382     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2383 done
2384
2385 aligned_stack_if_any="aarch64 ppc x86"
2386 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2387 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2388 fast_unaligned_if_any="aarch64 ppc x86"
2389 simd_align_16_if_any="altivec neon sse"
2390 simd_align_32_if_any="avx"
2391
2392 # system capabilities
2393 symver_if_any="symver_asm_label symver_gnu_asm"
2394 valgrind_backtrace_conflict="optimizations"
2395 valgrind_backtrace_deps="valgrind_valgrind_h"
2396
2397 # threading support
2398 atomics_gcc_if="sync_val_compare_and_swap"
2399 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2400 atomics_win32_if="MemoryBarrier"
2401 atomics_native_if_any="$ATOMICS_LIST"
2402 w32threads_deps="atomics_native"
2403 threads_if_any="$THREADS_LIST"
2404
2405 # subsystems
2406 cbs_h264_select="cbs golomb"
2407 cbs_h265_select="cbs golomb"
2408 cbs_mpeg2_select="cbs"
2409 dct_select="rdft"
2410 dirac_parse_select="golomb"
2411 error_resilience_select="me_cmp"
2412 faandct_deps="faan"
2413 faandct_select="fdctdsp"
2414 faanidct_deps="faan"
2415 faanidct_select="idctdsp"
2416 h264dsp_select="startcode"
2417 hevcparse_select="golomb"
2418 frame_thread_encoder_deps="encoders threads"
2419 intrax8_select="blockdsp idctdsp"
2420 mdct_select="fft"
2421 mdct15_select="fft"
2422 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2423 mpeg_er_select="error_resilience"
2424 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2425 mpegaudiodsp_select="dct"
2426 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2427 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2428 vc1dsp_select="h264chroma qpeldsp startcode"
2429 rdft_select="fft"
2430
2431 # decoders / encoders
2432 aac_decoder_select="adts_header mdct15 mdct sinewin"
2433 aac_fixed_decoder_select="mdct sinewin"
2434 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2435 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2436 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2437 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2438 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2439 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2440 adpcm_g722_decoder_select="g722dsp"
2441 adpcm_g722_encoder_select="g722dsp"
2442 aic_decoder_select="golomb idctdsp"
2443 alac_encoder_select="lpc"
2444 als_decoder_select="bswapdsp"
2445 amrnb_decoder_select="lsp"
2446 amrwb_decoder_select="lsp"
2447 amv_decoder_select="sp5x_decoder exif"
2448 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2449 ape_decoder_select="bswapdsp llauddsp"
2450 apng_decoder_deps="zlib"
2451 apng_encoder_deps="zlib"
2452 apng_encoder_select="llvidencdsp"
2453 aptx_decoder_select="audio_frame_queue"
2454 aptx_encoder_select="audio_frame_queue"
2455 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2456 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2457 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2458 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2459 atrac1_decoder_select="mdct sinewin"
2460 atrac3_decoder_select="mdct"
2461 atrac3p_decoder_select="mdct sinewin"
2462 avrn_decoder_select="exif jpegtables"
2463 bink_decoder_select="blockdsp hpeldsp"
2464 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2465 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2466 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2467 clearvideo_decoder_select="idctdsp"
2468 cllc_decoder_select="bswapdsp"
2469 comfortnoise_encoder_select="lpc"
2470 cook_decoder_select="audiodsp mdct sinewin"
2471 cscd_decoder_select="lzo"
2472 cscd_decoder_suggest="zlib"
2473 dca_decoder_select="mdct"
2474 dds_decoder_select="texturedsp"
2475 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2476 dnxhd_decoder_select="blockdsp idctdsp"
2477 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2478 dolby_e_decoder_select="mdct"
2479 dvvideo_decoder_select="dvprofile idctdsp"
2480 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2481 dxa_decoder_deps="zlib"
2482 dxv_decoder_select="lzf texturedsp"
2483 eac3_decoder_select="ac3_decoder"
2484 eac3_encoder_select="ac3_encoder"
2485 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2486 eatgq_decoder_select="aandcttables"
2487 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2488 exr_decoder_deps="zlib"
2489 ffv1_decoder_select="rangecoder"
2490 ffv1_encoder_select="rangecoder"
2491 ffvhuff_decoder_select="huffyuv_decoder"
2492 ffvhuff_encoder_select="huffyuv_encoder"
2493 fic_decoder_select="golomb"
2494 flac_decoder_select="flacdsp"
2495 flac_encoder_select="bswapdsp flacdsp lpc"
2496 flashsv2_decoder_deps="zlib"
2497 flashsv2_encoder_deps="zlib"
2498 flashsv_decoder_deps="zlib"
2499 flashsv_encoder_deps="zlib"
2500 flv_decoder_select="h263_decoder"
2501 flv_encoder_select="h263_encoder"
2502 fourxm_decoder_select="blockdsp bswapdsp"
2503 fraps_decoder_select="bswapdsp huffman"
2504 g2m_decoder_deps="zlib"
2505 g2m_decoder_select="blockdsp idctdsp jpegtables"
2506 g729_decoder_select="audiodsp"
2507 h261_decoder_select="mpegvideo"
2508 h261_encoder_select="aandcttables mpegvideoenc"
2509 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2510 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2511 h263i_decoder_select="h263_decoder"
2512 h263p_decoder_select="h263_decoder"
2513 h263p_encoder_select="h263_encoder"
2514 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2515 h264_decoder_suggest="error_resilience"
2516 hap_decoder_select="snappy texturedsp"
2517 hap_encoder_deps="libsnappy"
2518 hap_encoder_select="texturedspenc"
2519 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2520 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2521 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2522 iac_decoder_select="imc_decoder"
2523 imc_decoder_select="bswapdsp fft mdct sinewin"
2524 indeo3_decoder_select="hpeldsp"
2525 indeo4_decoder_select="ividsp"
2526 indeo5_decoder_select="ividsp"
2527 interplay_video_decoder_select="hpeldsp"
2528 jpegls_decoder_select="mjpeg_decoder"
2529 jv_decoder_select="blockdsp"
2530 lagarith_decoder_select="llviddsp"
2531 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2532 magicyuv_decoder_select="llviddsp"
2533 magicyuv_encoder_select="llvidencdsp"
2534 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2535 metasound_decoder_select="lsp mdct sinewin"
2536 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2537 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2538 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2539 mjpegb_decoder_select="mjpeg_decoder"
2540 mlp_decoder_select="mlp_parser"
2541 mlp_encoder_select="lpc"
2542 motionpixels_decoder_select="bswapdsp"
2543 mp1_decoder_select="mpegaudio"
2544 mp1float_decoder_select="mpegaudio"
2545 mp2_decoder_select="mpegaudio"
2546 mp2float_decoder_select="mpegaudio"
2547 mp3_decoder_select="mpegaudio"
2548 mp3adu_decoder_select="mpegaudio"
2549 mp3adufloat_decoder_select="mpegaudio"
2550 mp3float_decoder_select="mpegaudio"
2551 mp3on4_decoder_select="mpegaudio"
2552 mp3on4float_decoder_select="mpegaudio"
2553 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2554 mpc8_decoder_select="mpegaudiodsp"
2555 mpegvideo_decoder_select="mpegvideo"
2556 mpeg1video_decoder_select="mpegvideo"
2557 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2558 mpeg2video_decoder_select="mpegvideo"
2559 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2560 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2561 mpeg4_encoder_select="h263_encoder"
2562 msa1_decoder_select="mss34dsp"
2563 mscc_decoder_deps="zlib"
2564 msmpeg4v1_decoder_select="h263_decoder"
2565 msmpeg4v2_decoder_select="h263_decoder"
2566 msmpeg4v2_encoder_select="h263_encoder"
2567 msmpeg4v3_decoder_select="h263_decoder"
2568 msmpeg4v3_encoder_select="h263_encoder"
2569 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2570 mts2_decoder_select="mss34dsp"
2571 mxpeg_decoder_select="mjpeg_decoder"
2572 nellymoser_decoder_select="mdct sinewin"
2573 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2574 nuv_decoder_select="idctdsp lzo"
2575 on2avc_decoder_select="mdct"
2576 opus_decoder_deps="swresample"
2577 opus_decoder_select="mdct15"
2578 opus_encoder_select="audio_frame_queue mdct15"
2579 png_decoder_deps="zlib"
2580 png_encoder_deps="zlib"
2581 png_encoder_select="llvidencdsp"
2582 prores_decoder_select="blockdsp idctdsp"
2583 prores_encoder_select="fdctdsp"
2584 qcelp_decoder_select="lsp"
2585 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2586 ra_144_decoder_select="audiodsp"
2587 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2588 ralf_decoder_select="golomb"
2589 rawvideo_decoder_select="bswapdsp"
2590 rscc_decoder_deps="zlib"
2591 rtjpeg_decoder_select="me_cmp"
2592 rv10_decoder_select="h263_decoder"
2593 rv10_encoder_select="h263_encoder"
2594 rv20_decoder_select="h263_decoder"
2595 rv20_encoder_select="h263_encoder"
2596 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2597 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2598 screenpresso_decoder_deps="zlib"
2599 shorten_decoder_select="bswapdsp"
2600 sipr_decoder_select="lsp"
2601 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2602 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2603 sonic_decoder_select="golomb rangecoder"
2604 sonic_encoder_select="golomb rangecoder"
2605 sonic_ls_encoder_select="golomb rangecoder"
2606 sp5x_decoder_select="mjpeg_decoder"
2607 srgc_decoder_deps="zlib"
2608 svq1_decoder_select="hpeldsp"
2609 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2610 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2611 svq3_decoder_suggest="zlib"
2612 tak_decoder_select="audiodsp"
2613 tdsc_decoder_deps="zlib"
2614 tdsc_decoder_select="mjpeg_decoder"
2615 theora_decoder_select="vp3_decoder"
2616 thp_decoder_select="mjpeg_decoder"
2617 tiff_decoder_suggest="zlib lzma"
2618 tiff_encoder_suggest="zlib"
2619 truehd_decoder_select="mlp_parser"
2620 truehd_encoder_select="lpc"
2621 truemotion2_decoder_select="bswapdsp"
2622 truespeech_decoder_select="bswapdsp"
2623 tscc_decoder_deps="zlib"
2624 twinvq_decoder_select="mdct lsp sinewin"
2625 txd_decoder_select="texturedsp"
2626 utvideo_decoder_select="bswapdsp llviddsp"
2627 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2628 vble_decoder_select="llviddsp"
2629 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2630 vc1image_decoder_select="vc1_decoder"
2631 vorbis_decoder_select="mdct"
2632 vorbis_encoder_select="mdct"
2633 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2634 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2635 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2636 vp6a_decoder_select="vp6_decoder"
2637 vp6f_decoder_select="vp6_decoder"
2638 vp7_decoder_select="h264pred videodsp vp8dsp"
2639 vp8_decoder_select="h264pred videodsp vp8dsp"
2640 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2641 webp_decoder_select="vp8_decoder exif"
2642 wmalossless_decoder_select="llauddsp"
2643 wmapro_decoder_select="mdct sinewin wma_freqs"
2644 wmav1_decoder_select="mdct sinewin wma_freqs"
2645 wmav1_encoder_select="mdct sinewin wma_freqs"
2646 wmav2_decoder_select="mdct sinewin wma_freqs"
2647 wmav2_encoder_select="mdct sinewin wma_freqs"
2648 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2649 wmv1_decoder_select="h263_decoder"
2650 wmv1_encoder_select="h263_encoder"
2651 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2652 wmv2_encoder_select="h263_encoder wmv2dsp"
2653 wmv3_decoder_select="vc1_decoder"
2654 wmv3image_decoder_select="wmv3_decoder"
2655 xma1_decoder_select="wmapro_decoder"
2656 xma2_decoder_select="wmapro_decoder"
2657 zerocodec_decoder_deps="zlib"
2658 zlib_decoder_deps="zlib"
2659 zlib_encoder_deps="zlib"
2660 zmbv_decoder_deps="zlib"
2661 zmbv_encoder_deps="zlib"
2662
2663 # hardware accelerators
2664 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2665 cuda_deps_any="libdl LoadLibrary"
2666 cuvid_deps="cuda"
2667 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2668 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2669 nvdec_deps="cuda"
2670 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2671 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2672 xvmc_deps="X11_extensions_XvMClib_h"
2673
2674 h263_vaapi_hwaccel_deps="vaapi"
2675 h263_vaapi_hwaccel_select="h263_decoder"
2676 h263_videotoolbox_hwaccel_deps="videotoolbox"
2677 h263_videotoolbox_hwaccel_select="h263_decoder"
2678 h264_d3d11va_hwaccel_deps="d3d11va"
2679 h264_d3d11va_hwaccel_select="h264_decoder"
2680 h264_d3d11va2_hwaccel_deps="d3d11va"
2681 h264_d3d11va2_hwaccel_select="h264_decoder"
2682 h264_dxva2_hwaccel_deps="dxva2"
2683 h264_dxva2_hwaccel_select="h264_decoder"
2684 h264_nvdec_hwaccel_deps="nvdec"
2685 h264_nvdec_hwaccel_select="h264_decoder"
2686 h264_vaapi_hwaccel_deps="vaapi"
2687 h264_vaapi_hwaccel_select="h264_decoder"
2688 h264_vdpau_hwaccel_deps="vdpau"
2689 h264_vdpau_hwaccel_select="h264_decoder"
2690 h264_videotoolbox_hwaccel_deps="videotoolbox"
2691 h264_videotoolbox_hwaccel_select="h264_decoder"
2692 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2693 hevc_d3d11va_hwaccel_select="hevc_decoder"
2694 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2695 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2696 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2697 hevc_dxva2_hwaccel_select="hevc_decoder"
2698 hevc_nvdec_hwaccel_deps="nvdec"
2699 hevc_nvdec_hwaccel_select="hevc_decoder"
2700 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2701 hevc_vaapi_hwaccel_select="hevc_decoder"
2702 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2703 hevc_vdpau_hwaccel_select="hevc_decoder"
2704 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2705 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2706 mpeg_xvmc_hwaccel_deps="xvmc"
2707 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2708 mpeg1_nvdec_hwaccel_deps="nvdec"
2709 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2710 mpeg1_vdpau_hwaccel_deps="vdpau"
2711 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2712 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2713 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2714 mpeg1_xvmc_hwaccel_deps="xvmc"
2715 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2716 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2717 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2719 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_dxva2_hwaccel_deps="dxva2"
2721 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_nvdec_hwaccel_deps="nvdec"
2723 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_vaapi_hwaccel_deps="vaapi"
2725 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_vdpau_hwaccel_deps="vdpau"
2727 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2729 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_xvmc_hwaccel_deps="xvmc"
2731 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2732 mpeg4_nvdec_hwaccel_deps="nvdec"
2733 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2734 mpeg4_vaapi_hwaccel_deps="vaapi"
2735 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2736 mpeg4_vdpau_hwaccel_deps="vdpau"
2737 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2738 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2739 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2740 vc1_d3d11va_hwaccel_deps="d3d11va"
2741 vc1_d3d11va_hwaccel_select="vc1_decoder"
2742 vc1_d3d11va2_hwaccel_deps="d3d11va"
2743 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2744 vc1_dxva2_hwaccel_deps="dxva2"
2745 vc1_dxva2_hwaccel_select="vc1_decoder"
2746 vc1_nvdec_hwaccel_deps="nvdec"
2747 vc1_nvdec_hwaccel_select="vc1_decoder"
2748 vc1_vaapi_hwaccel_deps="vaapi"
2749 vc1_vaapi_hwaccel_select="vc1_decoder"
2750 vc1_vdpau_hwaccel_deps="vdpau"
2751 vc1_vdpau_hwaccel_select="vc1_decoder"
2752 vp8_nvdec_hwaccel_deps="nvdec"
2753 vp8_nvdec_hwaccel_select="vp8_decoder"
2754 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2755 vp8_vaapi_hwaccel_select="vp8_decoder"
2756 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2757 vp9_d3d11va_hwaccel_select="vp9_decoder"
2758 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2759 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2760 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2761 vp9_dxva2_hwaccel_select="vp9_decoder"
2762 vp9_nvdec_hwaccel_deps="nvdec"
2763 vp9_nvdec_hwaccel_select="vp9_decoder"
2764 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2765 vp9_vaapi_hwaccel_select="vp9_decoder"
2766 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2767 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2768 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2769 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2770 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2771 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2772
2773 # hardware-accelerated codecs
2774 omx_deps="libdl pthreads"
2775 omx_rpi_select="omx"
2776 qsv_deps="libmfx"
2777 qsvdec_select="qsv"
2778 qsvenc_select="qsv"
2779 qsvvpp_select="qsv"
2780 vaapi_encode_deps="vaapi"
2781 v4l2_m2m_deps_any="linux_videodev2_h"
2782
2783 hwupload_cuda_filter_deps="cuda"
2784 scale_npp_filter_deps="cuda libnpp"
2785 scale_cuda_filter_deps="cuda_sdk"
2786 thumbnail_cuda_filter_deps="cuda_sdk"
2787
2788 amf_deps_any="libdl LoadLibrary"
2789 nvenc_deps="cuda"
2790 nvenc_deps_any="libdl LoadLibrary"
2791 nvenc_encoder_deps="nvenc"
2792
2793 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2794 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2795 h264_amf_encoder_deps="amf"
2796 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2797 h264_cuvid_decoder_deps="cuvid"
2798 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2799 h264_mediacodec_decoder_deps="mediacodec"
2800 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2801 h264_mmal_decoder_deps="mmal"
2802 h264_nvenc_encoder_deps="nvenc"
2803 h264_omx_encoder_deps="omx"
2804 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2805 h264_qsv_encoder_select="qsvenc"
2806 h264_rkmpp_decoder_deps="rkmpp"
2807 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2808 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2809 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2810 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2811 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2812 hevc_amf_encoder_deps="amf"
2813 hevc_cuvid_decoder_deps="cuvid"
2814 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2815 hevc_mediacodec_decoder_deps="mediacodec"
2816 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2817 hevc_nvenc_encoder_deps="nvenc"
2818 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2819 hevc_qsv_encoder_select="hevcparse qsvenc"
2820 hevc_rkmpp_decoder_deps="rkmpp"
2821 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2822 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2823 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2824 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2825 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2826 mjpeg_cuvid_decoder_deps="cuvid"
2827 mjpeg_qsv_encoder_deps="libmfx"
2828 mjpeg_qsv_encoder_select="qsvenc"
2829 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2830 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2831 mpeg1_cuvid_decoder_deps="cuvid"
2832 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2833 mpeg2_crystalhd_decoder_select="crystalhd"
2834 mpeg2_cuvid_decoder_deps="cuvid"
2835 mpeg2_mmal_decoder_deps="mmal"
2836 mpeg2_mediacodec_decoder_deps="mediacodec"
2837 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2838 mpeg2_qsv_encoder_select="qsvenc"
2839 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2840 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2841 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2842 mpeg4_crystalhd_decoder_select="crystalhd"
2843 mpeg4_cuvid_decoder_deps="cuvid"
2844 mpeg4_mediacodec_decoder_deps="mediacodec"
2845 mpeg4_mmal_decoder_deps="mmal"
2846 mpeg4_omx_encoder_deps="omx"
2847 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2848 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2849 msmpeg4_crystalhd_decoder_select="crystalhd"
2850 nvenc_h264_encoder_select="h264_nvenc_encoder"
2851 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2852 vc1_crystalhd_decoder_select="crystalhd"
2853 vc1_cuvid_decoder_deps="cuvid"
2854 vc1_mmal_decoder_deps="mmal"
2855 vc1_qsv_decoder_select="qsvdec vc1_parser"
2856 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2857 vp8_cuvid_decoder_deps="cuvid"
2858 vp8_mediacodec_decoder_deps="mediacodec"
2859 vp8_qsv_decoder_select="qsvdec vp8_parser"
2860 vp8_rkmpp_decoder_deps="rkmpp"
2861 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2862 vp8_vaapi_encoder_select="vaapi_encode"
2863 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2864 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2865 vp9_cuvid_decoder_deps="cuvid"
2866 vp9_mediacodec_decoder_deps="mediacodec"
2867 vp9_rkmpp_decoder_deps="rkmpp"
2868 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2869 vp9_vaapi_encoder_select="vaapi_encode"
2870 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2871 wmv3_crystalhd_decoder_select="crystalhd"
2872
2873 # parsers
2874 aac_parser_select="adts_header"
2875 h264_parser_select="golomb h264dsp h264parse"
2876 hevc_parser_select="hevcparse"
2877 mpegaudio_parser_select="mpegaudioheader"
2878 mpegvideo_parser_select="mpegvideo"
2879 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2880 vc1_parser_select="vc1dsp"
2881
2882 # bitstream_filters
2883 aac_adtstoasc_bsf_select="adts_header"
2884 h264_metadata_bsf_select="cbs_h264"
2885 h264_redundant_pps_bsf_select="cbs_h264"
2886 hevc_metadata_bsf_select="cbs_h265"
2887 mjpeg2jpeg_bsf_select="jpegtables"
2888 mpeg2_metadata_bsf_select="cbs_mpeg2"
2889 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2890
2891 # external libraries
2892 aac_at_decoder_deps="audiotoolbox"
2893 aac_at_decoder_select="aac_adtstoasc_bsf"
2894 ac3_at_decoder_deps="audiotoolbox"
2895 ac3_at_decoder_select="ac3_parser"
2896 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2897 alac_at_decoder_deps="audiotoolbox"
2898 amr_nb_at_decoder_deps="audiotoolbox"
2899 avisynth_deps_any="libdl LoadLibrary"
2900 avisynth_demuxer_deps="avisynth"
2901 avisynth_demuxer_select="riffdec"
2902 eac3_at_decoder_deps="audiotoolbox"
2903 eac3_at_decoder_select="ac3_parser"
2904 gsm_ms_at_decoder_deps="audiotoolbox"
2905 ilbc_at_decoder_deps="audiotoolbox"
2906 mp1_at_decoder_deps="audiotoolbox"
2907 mp2_at_decoder_deps="audiotoolbox"
2908 mp3_at_decoder_deps="audiotoolbox"
2909 mp1_at_decoder_select="mpegaudioheader"
2910 mp2_at_decoder_select="mpegaudioheader"
2911 mp3_at_decoder_select="mpegaudioheader"
2912 pcm_alaw_at_decoder_deps="audiotoolbox"
2913 pcm_mulaw_at_decoder_deps="audiotoolbox"
2914 qdmc_at_decoder_deps="audiotoolbox"
2915 qdm2_at_decoder_deps="audiotoolbox"
2916 aac_at_encoder_deps="audiotoolbox"
2917 aac_at_encoder_select="audio_frame_queue"
2918 alac_at_encoder_deps="audiotoolbox"
2919 alac_at_encoder_select="audio_frame_queue"
2920 ilbc_at_encoder_deps="audiotoolbox"
2921 ilbc_at_encoder_select="audio_frame_queue"
2922 pcm_alaw_at_encoder_deps="audiotoolbox"
2923 pcm_alaw_at_encoder_select="audio_frame_queue"
2924 pcm_mulaw_at_encoder_deps="audiotoolbox"
2925 pcm_mulaw_at_encoder_select="audio_frame_queue"
2926 chromaprint_muxer_deps="chromaprint"
2927 h264_videotoolbox_encoder_deps="pthreads"
2928 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2929 hevc_videotoolbox_encoder_deps="pthreads"
2930 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2931 libcelt_decoder_deps="libcelt"
2932 libfdk_aac_decoder_deps="libfdk_aac"
2933 libfdk_aac_encoder_deps="libfdk_aac"
2934 libfdk_aac_encoder_select="audio_frame_queue"
2935 libgme_demuxer_deps="libgme"
2936 libgsm_decoder_deps="libgsm"
2937 libgsm_encoder_deps="libgsm"
2938 libgsm_ms_decoder_deps="libgsm"
2939 libgsm_ms_encoder_deps="libgsm"
2940 libilbc_decoder_deps="libilbc"
2941 libilbc_encoder_deps="libilbc"
2942 libkvazaar_encoder_deps="libkvazaar"
2943 libmodplug_demuxer_deps="libmodplug"
2944 libmp3lame_encoder_deps="libmp3lame"
2945 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2946 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2947 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2948 libopencore_amrnb_encoder_select="audio_frame_queue"
2949 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2950 libopenh264_decoder_deps="libopenh264"
2951 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2952 libopenh264_encoder_deps="libopenh264"
2953 libopenjpeg_decoder_deps="libopenjpeg"
2954 libopenjpeg_encoder_deps="libopenjpeg"
2955 libopenmpt_demuxer_deps="libopenmpt"
2956 libopus_decoder_deps="libopus"
2957 libopus_encoder_deps="libopus"
2958 libopus_encoder_select="audio_frame_queue"
2959 librsvg_decoder_deps="librsvg"
2960 libshine_encoder_deps="libshine"
2961 libshine_encoder_select="audio_frame_queue"
2962 libspeex_decoder_deps="libspeex"
2963 libspeex_encoder_deps="libspeex"
2964 libspeex_encoder_select="audio_frame_queue"
2965 libtheora_encoder_deps="libtheora"
2966 libtwolame_encoder_deps="libtwolame"
2967 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2968 libvorbis_decoder_deps="libvorbis"
2969 libvorbis_encoder_deps="libvorbis libvorbisenc"
2970 libvorbis_encoder_select="audio_frame_queue"
2971 libvpx_vp8_decoder_deps="libvpx"
2972 libvpx_vp8_encoder_deps="libvpx"
2973 libvpx_vp9_decoder_deps="libvpx"
2974 libvpx_vp9_encoder_deps="libvpx"
2975 libwavpack_encoder_deps="libwavpack"
2976 libwavpack_encoder_select="audio_frame_queue"
2977 libwebp_encoder_deps="libwebp"
2978 libwebp_anim_encoder_deps="libwebp"
2979 libx262_encoder_deps="libx262"
2980 libx264_encoder_deps="libx264"
2981 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2982 libx264rgb_encoder_select="libx264_encoder"
2983 libx265_encoder_deps="libx265"
2984 libxavs_encoder_deps="libxavs"
2985 libxvid_encoder_deps="libxvid"
2986 libzvbi_teletext_decoder_deps="libzvbi"
2987 videotoolbox_suggest="coreservices"
2988 videotoolbox_deps="corefoundation coremedia corevideo"
2989 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2990
2991 # demuxers / muxers
2992 ac3_demuxer_select="ac3_parser"
2993 aiff_muxer_select="iso_media"
2994 asf_demuxer_select="riffdec"
2995 asf_o_demuxer_select="riffdec"
2996 asf_muxer_select="riffenc"
2997 asf_stream_muxer_select="asf_muxer"
2998 avi_demuxer_select="iso_media riffdec exif"
2999 avi_muxer_select="riffenc"
3000 caf_demuxer_select="iso_media riffdec"
3001 caf_muxer_select="iso_media"
3002 dash_muxer_select="mp4_muxer"
3003 dash_demuxer_deps="libxml2"
3004 dirac_demuxer_select="dirac_parser"
3005 dts_demuxer_select="dca_parser"
3006 dtshd_demuxer_select="dca_parser"
3007 dv_demuxer_select="dvprofile"
3008 dv_muxer_select="dvprofile"
3009 dxa_demuxer_select="riffdec"
3010 eac3_demuxer_select="ac3_parser"
3011 f4v_muxer_select="mov_muxer"
3012 fifo_muxer_deps="threads"
3013 flac_demuxer_select="flac_parser"
3014 hds_muxer_select="flv_muxer"
3015 hls_muxer_select="mpegts_muxer"
3016 hls_muxer_suggest="gcrypt openssl"
3017 image2_alias_pix_demuxer_select="image2_demuxer"
3018 image2_brender_pix_demuxer_select="image2_demuxer"
3019 ipod_muxer_select="mov_muxer"
3020 ismv_muxer_select="mov_muxer"
3021 matroska_audio_muxer_select="matroska_muxer"
3022 matroska_demuxer_select="iso_media riffdec"
3023 matroska_demuxer_suggest="bzlib lzo zlib"
3024 matroska_muxer_select="iso_media riffenc"
3025 mmf_muxer_select="riffenc"
3026 mov_demuxer_select="iso_media riffdec"
3027 mov_demuxer_suggest="zlib"
3028 mov_muxer_select="iso_media riffenc rtpenc_chain"
3029 mp3_demuxer_select="mpegaudio_parser"
3030 mp3_muxer_select="mpegaudioheader"
3031 mp4_muxer_select="mov_muxer"
3032 mpegts_demuxer_select="iso_media"
3033 mpegts_muxer_select="adts_muxer latm_muxer"
3034 mpegtsraw_demuxer_select="mpegts_demuxer"
3035 mxf_d10_muxer_select="mxf_muxer"
3036 mxf_opatom_muxer_select="mxf_muxer"
3037 nut_muxer_select="riffenc"
3038 nuv_demuxer_select="riffdec"
3039 oga_muxer_select="ogg_muxer"
3040 ogg_demuxer_select="dirac_parse"
3041 ogv_muxer_select="ogg_muxer"
3042 opus_muxer_select="ogg_muxer"
3043 psp_muxer_select="mov_muxer"
3044 rtp_demuxer_select="sdp_demuxer"
3045 rtp_muxer_select="golomb"
3046 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3047 rtsp_demuxer_select="http_protocol rtpdec"
3048 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3049 sap_demuxer_select="sdp_demuxer"
3050 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3051 sdp_demuxer_select="rtpdec"
3052 smoothstreaming_muxer_select="ismv_muxer"
3053 spdif_demuxer_select="adts_header"
3054 spdif_muxer_select="adts_header"
3055 spx_muxer_select="ogg_muxer"
3056 swf_demuxer_suggest="zlib"
3057 tak_demuxer_select="tak_parser"
3058 tg2_muxer_select="mov_muxer"
3059 tgp_muxer_select="mov_muxer"
3060 vobsub_demuxer_select="mpegps_demuxer"
3061 w64_demuxer_select="wav_demuxer"
3062 w64_muxer_select="wav_muxer"
3063 wav_demuxer_select="riffdec"
3064 wav_muxer_select="riffenc"
3065 webm_muxer_select="iso_media riffenc"
3066 webm_dash_manifest_demuxer_select="matroska_demuxer"
3067 wtv_demuxer_select="mpegts_demuxer riffdec"
3068 wtv_muxer_select="mpegts_muxer riffenc"
3069 xmv_demuxer_select="riffdec"
3070 xwma_demuxer_select="riffdec"
3071
3072 # indevs / outdevs
3073 alsa_indev_deps="alsa"
3074 alsa_outdev_deps="alsa"
3075 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3076 avfoundation_indev_suggest="coregraphics applicationservices"
3077 avfoundation_indev_extralibs="-framework Foundation"
3078 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3079 caca_outdev_deps="libcaca"
3080 decklink_deps_any="libdl LoadLibrary"
3081 decklink_indev_deps="decklink threads"
3082 decklink_indev_extralibs="-lstdc++"
3083 decklink_outdev_deps="decklink threads"
3084 decklink_outdev_extralibs="-lstdc++"
3085 libndi_newtek_indev_deps="libndi_newtek"
3086 libndi_newtek_indev_extralibs="-lndi"
3087 libndi_newtek_outdev_deps="libndi_newtek"
3088 libndi_newtek_outdev_extralibs="-lndi"
3089 dshow_indev_deps="IBaseFilter"
3090 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3091 fbdev_indev_deps="linux_fb_h"
3092 fbdev_outdev_deps="linux_fb_h"
3093 gdigrab_indev_deps="CreateDIBSection"
3094 gdigrab_indev_extralibs="-lgdi32"
3095 gdigrab_indev_select="bmp_decoder"
3096 iec61883_indev_deps="libiec61883"
3097 jack_indev_deps="libjack"
3098 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3099 kmsgrab_indev_deps="libdrm"
3100 lavfi_indev_deps="avfilter"
3101 libcdio_indev_deps="libcdio"
3102 libdc1394_indev_deps="libdc1394"
3103 openal_indev_deps="openal"
3104 opengl_outdev_deps="opengl"
3105 oss_indev_deps_any="sys_soundcard_h"
3106 oss_outdev_deps_any="sys_soundcard_h"
3107 pulse_indev_deps="libpulse"
3108 pulse_outdev_deps="libpulse"
3109 sdl2_outdev_deps="sdl2"
3110 sndio_indev_deps="sndio"
3111 sndio_outdev_deps="sndio"
3112 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3113 v4l2_indev_suggest="libv4l2"
3114 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3115 v4l2_outdev_suggest="libv4l2"
3116 vfwcap_indev_deps="vfw32 vfwcap_defines"
3117 xcbgrab_indev_deps="libxcb"
3118 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3119 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3120 xv_outdev_extralibs="-lXv -lX11 -lXext"
3121
3122 # protocols
3123 async_protocol_deps="threads"
3124 bluray_protocol_deps="libbluray"
3125 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3126 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3127 ffrtmpcrypt_protocol_select="tcp_protocol"
3128 ffrtmphttp_protocol_conflict="librtmp_protocol"
3129 ffrtmphttp_protocol_select="http_protocol"
3130 ftp_protocol_select="tcp_protocol"
3131 gopher_protocol_select="network"
3132 http_protocol_select="tcp_protocol"
3133 http_protocol_suggest="zlib"
3134 httpproxy_protocol_select="tcp_protocol"
3135 httpproxy_protocol_suggest="zlib"
3136 https_protocol_select="tls_protocol"
3137 https_protocol_suggest="zlib"
3138 icecast_protocol_select="http_protocol"
3139 librtmp_protocol_deps="librtmp"
3140 librtmpe_protocol_deps="librtmp"
3141 librtmps_protocol_deps="librtmp"
3142 librtmpt_protocol_deps="librtmp"
3143 librtmpte_protocol_deps="librtmp"
3144 libsmbclient_protocol_deps="libsmbclient gplv3"
3145 libssh_protocol_deps="libssh"
3146 mmsh_protocol_select="http_protocol"
3147 mmst_protocol_select="network"
3148 rtmp_protocol_conflict="librtmp_protocol"
3149 rtmp_protocol_select="tcp_protocol"
3150 rtmp_protocol_suggest="zlib"
3151 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3152 rtmpe_protocol_suggest="zlib"
3153 rtmps_protocol_conflict="librtmp_protocol"
3154 rtmps_protocol_select="tls_protocol"
3155 rtmps_protocol_suggest="zlib"
3156 rtmpt_protocol_select="ffrtmphttp_protocol"
3157 rtmpt_protocol_suggest="zlib"
3158 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3159 rtmpte_protocol_suggest="zlib"
3160 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3161 rtmpts_protocol_suggest="zlib"
3162 rtp_protocol_select="udp_protocol"
3163 schannel_conflict="openssl gnutls"
3164 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3165 sctp_protocol_select="network"
3166 securetransport_conflict="openssl gnutls"
3167 srtp_protocol_select="rtp_protocol srtp"
3168 tcp_protocol_select="network"
3169 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3170 tls_protocol_select="tcp_protocol"
3171 udp_protocol_select="network"
3172 udplite_protocol_select="network"
3173 unix_protocol_deps="sys_un_h"
3174 unix_protocol_select="network"
3175
3176 # filters
3177 afftfilt_filter_deps="avcodec"
3178 afftfilt_filter_select="fft"
3179 afir_filter_deps="avcodec"
3180 afir_filter_select="fft"
3181 amovie_filter_deps="avcodec avformat"
3182 aresample_filter_deps="swresample"
3183 ass_filter_deps="libass"
3184 atempo_filter_deps="avcodec"
3185 atempo_filter_select="rdft"
3186 azmq_filter_deps="libzmq"
3187 blackframe_filter_deps="gpl"
3188 boxblur_filter_deps="gpl"
3189 bs2b_filter_deps="libbs2b"
3190 colormatrix_filter_deps="gpl"
3191 coreimage_filter_deps="coreimage appkit"
3192 coreimage_filter_extralibs="-framework OpenGL"
3193 coreimagesrc_filter_deps="coreimage appkit"
3194 coreimagesrc_filter_extralibs="-framework OpenGL"
3195 cover_rect_filter_deps="avcodec avformat gpl"
3196 cropdetect_filter_deps="gpl"
3197 deinterlace_qsv_filter_deps="libmfx"
3198 deinterlace_vaapi_filter_deps="vaapi"
3199 delogo_filter_deps="gpl"
3200 deshake_filter_select="pixelutils"
3201 drawtext_filter_deps="libfreetype"
3202 drawtext_filter_suggest="libfontconfig libfribidi"
3203 elbg_filter_deps="avcodec"
3204 eq_filter_deps="gpl"
3205 fftfilt_filter_deps="avcodec"
3206 fftfilt_filter_select="rdft"
3207 find_rect_filter_deps="avcodec avformat gpl"
3208 firequalizer_filter_deps="avcodec"
3209 firequalizer_filter_select="rdft"
3210 flite_filter_deps="libflite"
3211 framerate_filter_select="pixelutils"
3212 frei0r_filter_deps="frei0r libdl"
3213 frei0r_src_filter_deps="frei0r libdl"
3214 fspp_filter_deps="gpl"
3215 geq_filter_deps="gpl"
3216 histeq_filter_deps="gpl"
3217 hqdn3d_filter_deps="gpl"
3218 interlace_filter_deps="gpl"
3219 kerndeint_filter_deps="gpl"
3220 ladspa_filter_deps="ladspa libdl"
3221 lv2_filter_deps="lv2"
3222 mcdeint_filter_deps="avcodec gpl"
3223 movie_filter_deps="avcodec avformat"
3224 mpdecimate_filter_deps="gpl"
3225 mpdecimate_filter_select="pixelutils"
3226 mptestsrc_filter_deps="gpl"
3227 negate_filter_deps="lut_filter"
3228 nnedi_filter_deps="gpl"
3229 ocr_filter_deps="libtesseract"
3230 ocv_filter_deps="libopencv"
3231 overlay_opencl_filter_deps="opencl"
3232 overlay_qsv_filter_deps="libmfx"
3233 overlay_qsv_filter_select="qsvvpp"
3234 owdenoise_filter_deps="gpl"
3235 pan_filter_deps="swresample"
3236 perspective_filter_deps="gpl"
3237 phase_filter_deps="gpl"
3238 pp7_filter_deps="gpl"
3239 pp_filter_deps="gpl postproc"
3240 pullup_filter_deps="gpl"
3241 removelogo_filter_deps="avcodec avformat swscale"
3242 repeatfields_filter_deps="gpl"
3243 resample_filter_deps="avresample"
3244 rubberband_filter_deps="librubberband"
3245 sab_filter_deps="gpl swscale"
3246 scale2ref_filter_deps="swscale"
3247 scale_filter_deps="swscale"
3248 scale_qsv_filter_deps="libmfx"
3249 select_filter_select="pixelutils"
3250 showcqt_filter_deps="avcodec avformat swscale"
3251 showcqt_filter_suggest="libfontconfig libfreetype"
3252 showcqt_filter_select="fft"
3253 showfreqs_filter_deps="avcodec"
3254 showfreqs_filter_select="fft"
3255 showspectrum_filter_deps="avcodec"
3256 showspectrum_filter_select="fft"
3257 showspectrumpic_filter_deps="avcodec"
3258 showspectrumpic_filter_select="fft"
3259 signature_filter_deps="gpl avcodec avformat"
3260 smartblur_filter_deps="gpl swscale"
3261 sofalizer_filter_deps="libmysofa avcodec"
3262 sofalizer_filter_select="fft"
3263 spectrumsynth_filter_deps="avcodec"
3264 spectrumsynth_filter_select="fft"
3265 spp_filter_deps="gpl avcodec"
3266 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3267 stereo3d_filter_deps="gpl"
3268 subtitles_filter_deps="avformat avcodec libass"
3269 super2xsai_filter_deps="gpl"
3270 pixfmts_super2xsai_test_deps="super2xsai_filter"
3271 tinterlace_filter_deps="gpl"
3272 tinterlace_merge_test_deps="tinterlace_filter"
3273 tinterlace_pad_test_deps="tinterlace_filter"
3274 tonemap_filter_deps="const_nan"
3275 unsharp_opencl_filter_deps="opencl"
3276 uspp_filter_deps="gpl avcodec"
3277 vaguedenoiser_filter_deps="gpl"
3278 vidstabdetect_filter_deps="libvidstab"
3279 vidstabtransform_filter_deps="libvidstab"
3280 libvmaf_filter_deps="libvmaf"
3281 zmq_filter_deps="libzmq"
3282 zoompan_filter_deps="swscale"
3283 zscale_filter_deps="libzimg const_nan"
3284 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3285 vpp_qsv_filter_deps="libmfx"
3286 vpp_qsv_filter_select="qsvvpp"
3287
3288 # examples
3289 avio_dir_cmd_deps="avformat avutil"
3290 avio_reading_deps="avformat avcodec avutil"
3291 decode_audio_example_deps="avcodec avutil"
3292 decode_video_example_deps="avcodec avutil"
3293 demuxing_decoding_example_deps="avcodec avformat avutil"
3294 encode_audio_example_deps="avcodec avutil"
3295 encode_video_example_deps="avcodec avutil"
3296 extract_mvs_example_deps="avcodec avformat avutil"
3297 filter_audio_example_deps="avfilter avutil"
3298 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3299 filtering_video_example_deps="avfilter avcodec avformat avutil"
3300 http_multiclient_example_deps="avformat avutil fork"
3301 hw_decode_example_deps="avcodec avformat avutil"
3302 metadata_example_deps="avformat avutil"
3303 muxing_example_deps="avcodec avformat avutil swscale"
3304 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3305 remuxing_example_deps="avcodec avformat avutil"
3306 resampling_audio_example_deps="avutil swresample"
3307 scaling_video_example_deps="avutil swscale"
3308 transcode_aac_example_deps="avcodec avformat swresample"
3309 transcoding_example_deps="avfilter avcodec avformat avutil"
3310 vaapi_encode_example_deps="avcodec avutil"
3311
3312 # EXTRALIBS_LIST
3313 cpu_init_extralibs="pthreads_extralibs"
3314 cws2fws_extralibs="zlib_extralibs"
3315
3316 # libraries, in linking order
3317 avcodec_deps="avutil"
3318 avcodec_suggest="libm"
3319 avcodec_select="null_bsf"
3320 avdevice_deps="avformat avcodec avutil"
3321 avdevice_suggest="libm"
3322 avfilter_deps="avutil"
3323 avfilter_suggest="libm"
3324 avformat_deps="avcodec avutil"
3325 avformat_suggest="libm network zlib"
3326 avresample_deps="avutil"
3327 avresample_suggest="libm"
3328 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3329 postproc_deps="avutil gpl"
3330 postproc_suggest="libm"
3331 swresample_deps="avutil"
3332 swresample_suggest="libm libsoxr"
3333 swscale_deps="avutil"
3334 swscale_suggest="libm"
3335
3336 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3337 avfilter_extralibs="pthreads_extralibs"
3338 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3339
3340 # programs
3341 ffmpeg_deps="avcodec avfilter avformat swresample"
3342 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3343                null_filter
3344                trim_filter"
3345 ffmpeg_suggest="ole32 psapi shell32"
3346 ffplay_deps="avcodec avformat swscale swresample sdl2"
3347 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3348 ffplay_suggest="shell32"
3349 ffprobe_deps="avcodec avformat"
3350 ffprobe_suggest="shell32"
3351 ffserver_deps="avformat fork sarestart"
3352 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3353
3354 # documentation
3355 podpages_deps="perl"
3356 manpages_deps="perl pod2man"
3357 htmlpages_deps="perl"
3358 htmlpages_deps_any="makeinfo_html texi2html"
3359 txtpages_deps="perl makeinfo"
3360 doc_deps_any="manpages htmlpages podpages txtpages"
3361
3362 # default parameters
3363
3364 logfile="ffbuild/config.log"
3365
3366 # installation paths
3367 prefix_default="/usr/local"
3368 bindir_default='${prefix}/bin'
3369 datadir_default='${prefix}/share/ffmpeg'
3370 docdir_default='${prefix}/share/doc/ffmpeg'
3371 incdir_default='${prefix}/include'
3372 libdir_default='${prefix}/lib'
3373 mandir_default='${prefix}/share/man'
3374
3375 # toolchain
3376 ar_default="ar"
3377 cc_default="gcc"
3378 cxx_default="g++"
3379 host_cc_default="gcc"
3380 doxygen_default="doxygen"
3381 install="install"
3382 ln_s_default="ln -s -f"
3383 nm_default="nm -g"
3384 pkg_config_default=pkg-config
3385 ranlib_default="ranlib"
3386 strip_default="strip"
3387 version_script='--version-script'
3388 objformat="elf32"
3389 x86asmexe_default="nasm"
3390 windres_default="windres"
3391 nvcc_default="nvcc"
3392 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3393 striptype="direct"
3394
3395 # OS
3396 target_os_default=$(tolower $(uname -s))
3397 host_os=$target_os_default
3398
3399 # machine
3400 if test "$target_os_default" = aix; then
3401     arch_default=$(uname -p)
3402     strip_default="strip -X32_64"
3403 else
3404     arch_default=$(uname -m)
3405 fi
3406 cpu="generic"
3407 intrinsics="none"
3408
3409 # configurable options
3410 enable $PROGRAM_LIST
3411 enable $DOCUMENT_LIST
3412 enable $EXAMPLE_LIST
3413 enable $(filter_out avresample $LIBRARY_LIST)
3414 enable stripping
3415
3416 enable asm
3417 enable debug
3418 enable doc
3419 enable faan faandct faanidct
3420 enable optimizations
3421 enable runtime_cpudetect
3422 enable safe_bitstream_reader
3423 enable static
3424 enable swscale_alpha
3425 enable valgrind_backtrace
3426
3427 sws_max_filter_size_default=256
3428 set_default sws_max_filter_size
3429
3430 # internal components are enabled by default
3431 enable $EXTRALIBS_LIST
3432
3433 # Avoid external, non-system, libraries getting enabled by dependency resolution
3434 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3435
3436 # build settings
3437 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3438 LIBPREF="lib"
3439 LIBSUF=".a"
3440 FULLNAME='$(NAME)$(BUILDSUF)'
3441 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3442 SLIBPREF="lib"
3443 SLIBSUF=".so"
3444 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3445 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3446 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3447 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3448 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3449 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3450 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3451
3452 asflags_filter=echo
3453 cflags_filter=echo
3454 ldflags_filter=echo
3455
3456 AS_C='-c'
3457 AS_O='-o $@'
3458 CC_C='-c'
3459 CC_E='-E -o $@'
3460 CC_O='-o $@'
3461 CXX_C='-c'
3462 CXX_O='-o $@'
3463 OBJCC_C='-c'
3464 OBJCC_E='-E -o $@'
3465 OBJCC_O='-o $@'
3466 X86ASM_O='-o $@'
3467 LD_O='-o $@'
3468 LD_LIB='-l%'
3469 LD_PATH='-L'
3470 HOSTCC_C='-c'
3471 HOSTCC_E='-E -o $@'
3472 HOSTCC_O='-o $@'
3473 HOSTLD_O='-o $@'
3474 NVCC_C='-c'
3475 NVCC_O='-o $@'
3476
3477 host_extralibs='-lm'
3478 host_cflags_filter=echo
3479 host_ldflags_filter=echo
3480
3481 target_path='$(CURDIR)'
3482
3483 # since the object filename is not given with the -MM flag, the compiler
3484 # is only able to print the basename, and we must add the path ourselves
3485 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3486 DEPFLAGS='-MM'
3487
3488 mkdir -p ffbuild
3489
3490 # find source path
3491 if test -f configure; then
3492     source_path=.
3493 else
3494     source_path=$(cd $(dirname "$0"); pwd)
3495     case "$source_path" in
3496         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3497     esac
3498     test -e "$source_path/config.h" &&
3499         die "Out of tree builds are impossible with config.h in source dir."
3500 fi
3501
3502 for v in "$@"; do
3503     r=${v#*=}
3504     l=${v%"$r"}
3505     r=$(sh_quote "$r")
3506     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3507 done
3508
3509 find_things(){
3510     thing=$1
3511     pattern=$2
3512     file=$source_path/$3
3513     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3514 }
3515
3516 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3517 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3518 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3519 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3520 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3521 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3522 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3523 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3524
3525 find_things_extern(){
3526     thing=$1
3527     pattern=$2
3528     file=$source_path/$3
3529     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3530 }
3531
3532 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3533 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3534 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3535
3536 AVCODEC_COMPONENTS_LIST="
3537     $BSF_LIST
3538     $DECODER_LIST
3539     $ENCODER_LIST
3540     $HWACCEL_LIST
3541     $PARSER_LIST
3542 "
3543
3544 AVDEVICE_COMPONENTS_LIST="
3545     $INDEV_LIST
3546     $OUTDEV_LIST
3547 "
3548
3549 AVFILTER_COMPONENTS_LIST="
3550     $FILTER_LIST
3551 "
3552
3553 AVFORMAT_COMPONENTS_LIST="
3554     $DEMUXER_LIST
3555     $MUXER_LIST
3556     $PROTOCOL_LIST
3557 "
3558
3559 ALL_COMPONENTS="
3560     $AVCODEC_COMPONENTS_LIST
3561     $AVDEVICE_COMPONENTS_LIST
3562     $AVFILTER_COMPONENTS_LIST
3563     $AVFORMAT_COMPONENTS_LIST
3564 "
3565
3566 for n in $COMPONENT_LIST; do
3567     v=$(toupper ${n%s})_LIST
3568     eval enable \$$v
3569     eval ${n}_if_any="\$$v"
3570 done
3571
3572 enable $ARCH_EXT_LIST
3573
3574 die_unknown(){
3575     echo "Unknown option \"$1\"."
3576     echo "See $0 --help for available options."
3577     exit 1
3578 }
3579
3580 print_in_columns() {
3581     cols=$(expr $ncols / 24)
3582     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3583 }
3584
3585 show_list() {
3586     suffix=_$1
3587     shift
3588     echo $* | sed s/$suffix//g | print_in_columns
3589     exit 0
3590 }
3591
3592 rand_list(){
3593     IFS=', '
3594     set -- $*
3595     unset IFS
3596     for thing; do
3597         comp=${thing%:*}
3598         prob=${thing#$comp}
3599         prob=${prob#:}
3600         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3601         echo "prob ${prob:-0.5}"
3602         printf '%s\n' $comp
3603     done
3604 }
3605
3606 do_random(){
3607     action=$1
3608     shift
3609     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3610     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3611 }
3612
3613 for opt do
3614     optval="${opt#*=}"
3615     case "$opt" in
3616         --extra-ldflags=*)
3617             add_ldflags $optval
3618         ;;
3619         --extra-ldexeflags=*)
3620             add_ldexeflags $optval
3621         ;;
3622         --extra-ldsoflags=*)
3623             add_ldsoflags $optval
3624         ;;
3625         --extra-ldlibflags=*)
3626             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3627                  "removed in the future. Use --extra-ldsoflags instead."
3628             add_ldsoflags $optval
3629         ;;
3630         --extra-libs=*)
3631             add_extralibs $optval
3632         ;;
3633         --disable-devices)
3634             disable $INDEV_LIST $OUTDEV_LIST
3635         ;;
3636         --enable-debug=*)
3637             debuglevel="$optval"
3638         ;;
3639         --disable-programs)
3640             disable $PROGRAM_LIST
3641         ;;
3642         --disable-everything)
3643             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3644         ;;
3645         --disable-all)
3646             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3647             disable $LIBRARY_LIST $PROGRAM_LIST doc
3648             enable avutil
3649         ;;
3650         --enable-random|--disable-random)
3651             action=${opt%%-random}
3652             do_random ${action#--} $COMPONENT_LIST
3653         ;;
3654         --enable-random=*|--disable-random=*)
3655             action=${opt%%-random=*}
3656             do_random ${action#--} $optval
3657         ;;
3658         --enable-sdl)
3659             enable sdl2
3660         ;;
3661         --enable-*=*|--disable-*=*)
3662             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3663             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3664             eval list=\$$(toupper $thing)_LIST
3665             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3666             list=$(filter "$name" $list)
3667             [ "$list" = "" ] && warn "Option $opt did not match anything"
3668             $action $list
3669         ;;
3670         --enable-yasm|--disable-yasm)
3671             warn "The ${opt} option is only provided for compatibility and will be\n"\
3672                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3673             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3674         ;;
3675         --yasmexe=*)
3676             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3677                  "removed in the future. Use --x86asmexe instead."
3678             x86asmexe="$optval"
3679         ;;
3680         --enable-?*|--disable-?*)
3681             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3682             if is_in $option $COMPONENT_LIST; then
3683                 test $action = disable && action=unset
3684                 eval $action \$$(toupper ${option%s})_LIST
3685             elif is_in $option $CMDLINE_SELECT; then
3686                 $action $option
3687             else
3688                 die_unknown $opt
3689             fi
3690         ;;
3691         --list-*)
3692             NAME="${opt#--list-}"
3693             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3694             NAME=${NAME%s}
3695             eval show_list $NAME \$$(toupper $NAME)_LIST
3696         ;;
3697         --help|-h) show_help
3698         ;;
3699         --quiet|-q) quiet=yes
3700         ;;
3701         --fatal-warnings) enable fatal_warnings
3702         ;;
3703         --libfuzzer=*)
3704             libfuzzer_path="$optval"
3705         ;;
3706         *)
3707             optname="${opt%%=*}"
3708             optname="${optname#--}"
3709             optname=$(echo "$optname" | sed 's/-/_/g')
3710             if is_in $optname $CMDLINE_SET; then
3711                 eval $optname='$optval'
3712             elif is_in $optname $CMDLINE_APPEND; then
3713                 append $optname "$optval"
3714             else
3715                 die_unknown $opt
3716             fi
3717         ;;
3718     esac
3719 done
3720
3721 for e in $env; do
3722     eval "export $e"
3723 done
3724
3725 if disabled autodetect; then
3726
3727     # Unless iconv is explicitely disabled by the user, we still want to probe
3728     # for the iconv from the libc.
3729     disabled iconv || enable libc_iconv
3730
3731     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3732     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3733 fi
3734 # Mark specifically enabled, but normally autodetected libraries as requested.
3735 for lib in $AUTODETECT_LIBS; do
3736     enabled $lib && request $lib
3737 done
3738 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3739 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3740 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3741
3742 disabled logging && logfile=/dev/null
3743
3744 # command line configuration sanity checks
3745
3746 # we need to build at least one lib type
3747 if ! enabled_any static shared; then
3748     cat <<EOF
3749 At least one library type must be built.
3750 Specify --enable-static to build the static libraries or --enable-shared to
3751 build the shared libraries as well. To only build the shared libraries specify
3752 --disable-static in addition to --enable-shared.
3753 EOF
3754     exit 1
3755 fi
3756
3757 die_license_disabled() {
3758     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3759 }
3760
3761 die_license_disabled_gpl() {
3762     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3763 }
3764
3765 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3766 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3767
3768 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3769 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3770
3771 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3772
3773 enabled_all gnutls openssl &&
3774     die "GnuTLS and OpenSSL must not be enabled at the same time."
3775
3776 # Disable all the library-specific components if the library itself
3777 # is disabled, see AVCODEC_LIST and following _LIST variables.
3778
3779 disable_components(){
3780     disabled ${1} && disable $(
3781         eval components="\$$(toupper ${1})_COMPONENTS"
3782         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3783     )
3784 }
3785
3786 map 'disable_components $v' $LIBRARY_LIST
3787
3788 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3789 set >> $logfile
3790
3791 test -n "$valgrind" && toolchain="valgrind-memcheck"
3792
3793 enabled ossfuzz && {
3794     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3795     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3796 }
3797
3798 case "$toolchain" in
3799     *-asan)
3800         cc_default="${toolchain%-asan}"
3801         add_cflags  -fsanitize=address
3802         add_ldflags -fsanitize=address
3803     ;;
3804     *-msan)
3805         cc_default="${toolchain%-msan}"
3806         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3807         add_ldflags -fsanitize=memory
3808     ;;
3809     *-tsan)
3810         cc_default="${toolchain%-tsan}"
3811         add_cflags  -fsanitize=thread -fPIE
3812         add_ldflags -fsanitize=thread -pie
3813         case "$toolchain" in
3814             gcc-tsan)
3815                 add_cflags  -fPIC
3816                 add_ldflags -fPIC
3817                 ;;
3818         esac
3819     ;;
3820     *-usan)
3821         cc_default="${toolchain%-usan}"
3822         add_cflags  -fsanitize=undefined
3823         add_ldflags -fsanitize=undefined
3824     ;;
3825     valgrind-*)
3826         target_exec_default="valgrind"
3827         case "$toolchain" in
3828             valgrind-massif)
3829                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3830                 ;;
3831             valgrind-memcheck)
3832                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3833                 ;;
3834         esac
3835     ;;
3836     msvc)
3837         # Check whether the current MSVC version needs the C99 converter.
3838         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3839         # support enough of C99 to build ffmpeg. Default to the new
3840         # behaviour if the regexp was unable to match anything, since this
3841         # successfully parses the version number of existing supported
3842         # versions that require the converter (MSVC 2010 and 2012).
3843         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3844         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3845             cc_default="cl"
3846             cxx_default="cl"
3847         else
3848             cc_default="c99wrap cl"
3849             cxx_default="c99wrap cl"
3850         fi
3851         ld_default="$source_path/compat/windows/mslink"
3852         nm_default="dumpbin -symbols"
3853         ar_default="lib"
3854         case "$arch" in
3855         aarch64|arm64)
3856             as_default="armasm64"
3857             ;;
3858         arm*)
3859             as_default="armasm"
3860             ;;
3861         esac
3862         target_os_default="win32"
3863         # Use a relative path for TMPDIR. This makes sure all the
3864         # ffconf temp files are written with a relative path, avoiding
3865         # issues with msys/win32 path conversion for MSVC parameters
3866         # such as -Fo<file> or -out:<file>.
3867         TMPDIR=.
3868     ;;
3869     icl)
3870         cc_default="icl"
3871         ld_default="xilink"
3872         nm_default="dumpbin -symbols"
3873         ar_default="xilib"
3874         target_os_default="win32"
3875         TMPDIR=.
3876     ;;
3877     gcov)
3878         add_cflags  -fprofile-arcs -ftest-coverage
3879         add_ldflags -fprofile-arcs -ftest-coverage
3880     ;;
3881     llvm-cov)
3882         add_cflags -fprofile-arcs -ftest-coverage
3883         add_ldflags --coverage
3884     ;;
3885     hardened)
3886         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3887         add_cflags   -fno-strict-overflow -fstack-protector-all
3888         add_ldflags  -Wl,-z,relro -Wl,-z,now
3889         add_cflags   -fPIE
3890         add_ldexeflags -fPIE -pie
3891     ;;
3892     ?*)
3893         die "Unknown toolchain $toolchain"
3894     ;;
3895 esac
3896
3897 if test -n "$cross_prefix"; then
3898     test -n "$arch" && test -n "$target_os" ||
3899         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3900     enable cross_compile
3901 fi
3902
3903 ar_default="${cross_prefix}${ar_default}"
3904 cc_default="${cross_prefix}${cc_default}"
3905 cxx_default="${cross_prefix}${cxx_default}"
3906 nm_default="${cross_prefix}${nm_default}"
3907 pkg_config_default="${cross_prefix}${pkg_config_default}"
3908 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3909     ranlib_default="${cross_prefix}${ranlib_default} -D"
3910 else
3911     ranlib_default="${cross_prefix}${ranlib_default}"
3912 fi
3913 strip_default="${cross_prefix}${strip_default}"
3914 windres_default="${cross_prefix}${windres_default}"
3915
3916 sysinclude_default="${sysroot}/usr/include"
3917
3918 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3919     target_exec target_os x86asmexe nvcc
3920 enabled cross_compile || host_cc_default=$cc
3921 set_default host_cc
3922
3923 pkg_config_fail_message=""
3924 if ! $pkg_config --version >/dev/null 2>&1; then
3925     warn "$pkg_config not found, library detection may fail."
3926     pkg_config=false
3927 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3928     pkg_config_fail_message="
3929 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3930 fi
3931
3932 if test $doxygen != $doxygen_default && \
3933   ! $doxygen --version >/dev/null 2>&1; then
3934     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3935 fi
3936
3937 exesuf() {
3938     case $1 in
3939         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3940     esac
3941 }
3942
3943 EXESUF=$(exesuf $target_os)
3944 HOSTEXESUF=$(exesuf $host_os)
3945
3946 # set temporary file name
3947 : ${TMPDIR:=$TEMPDIR}
3948 : ${TMPDIR:=$TMP}
3949 : ${TMPDIR:=/tmp}
3950
3951 if [ -n "$tempprefix" ] ; then
3952     mktemp(){
3953         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3954         echo "$tmpname"
3955         mkdir "$tmpname"
3956     }
3957 elif ! check_cmd mktemp -u XXXXXX; then
3958     # simple replacement for missing mktemp
3959     # NOT SAFE FOR GENERAL USE
3960     mktemp(){
3961         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3962         echo "$tmpname"
3963         mkdir "$tmpname"
3964     }
3965 fi
3966
3967 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3968     die "Unable to create temporary directory in $TMPDIR."
3969
3970 tmpfile(){
3971     tmp="${FFTMPDIR}/test"$2
3972     (set -C; exec > $tmp) 2> /dev/null ||
3973         die "Unable to create temporary file in $FFTMPDIR."
3974     eval $1=$tmp
3975 }
3976
3977 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3978 trap 'exit 2' INT
3979
3980 tmpfile TMPASM .asm
3981 tmpfile TMPC   .c
3982 tmpfile TMPCPP .cpp
3983 tmpfile TMPE   $EXESUF
3984 tmpfile TMPH   .h
3985 tmpfile TMPM   .m
3986 tmpfile TMPO   .o
3987 tmpfile TMPS   .S
3988 tmpfile TMPSH  .sh
3989 tmpfile TMPV   .ver
3990
3991 unset -f mktemp
3992
3993 chmod +x $TMPE
3994
3995 # make sure we can execute files in $TMPDIR
3996 cat > $TMPSH 2>> $logfile <<EOF
3997 #! /bin/sh
3998 EOF
3999 chmod +x $TMPSH >> $logfile 2>&1
4000 if ! $TMPSH >> $logfile 2>&1; then
4001     cat <<EOF
4002 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4003 variable to another directory and make sure that it is not mounted noexec.
4004 EOF
4005     die "Sanity test failed."
4006 fi
4007
4008 armasm_flags(){
4009     for flag; do
4010         case $flag in
4011             # Filter out MSVC cl.exe options from cflags that shouldn't
4012             # be passed to gas-preprocessor
4013             -M[TD]*)                                            ;;
4014             *)                  echo $flag                      ;;
4015         esac
4016    done
4017 }
4018
4019 cparser_flags(){
4020     for flag; do
4021         case $flag in
4022             -Wno-switch)             echo -Wno-switch-enum ;;
4023             -Wno-format-zero-length) ;;
4024             -Wdisabled-optimization) ;;
4025             -Wno-pointer-sign)       echo -Wno-other ;;
4026             *)                       echo $flag ;;
4027         esac
4028     done
4029 }
4030
4031 msvc_common_flags(){
4032     for flag; do
4033         case $flag in
4034             # In addition to specifying certain flags under the compiler
4035             # specific filters, they must be specified here as well or else the
4036             # generic catch all at the bottom will print the original flag.
4037             -Wall)                ;;
4038             -Wextra)              ;;
4039             -std=c99)             ;;
4040             # Common flags
4041             -fomit-frame-pointer) ;;
4042             -g)                   echo -Z7 ;;
4043             -fno-math-errno)      ;;
4044             -fno-common)          ;;
4045             -fno-signed-zeros)    ;;
4046             -fPIC)                ;;
4047             -mthumb)              ;;
4048             -march=*)             ;;
4049             -lz)                  echo zlib.lib ;;
4050             -lx264)               echo libx264.lib ;;
4051             -lstdc++)             ;;
4052             -l*)                  echo ${flag#-l}.lib ;;
4053             -LARGEADDRESSAWARE)   echo $flag ;;
4054             -L*)                  echo -libpath:${flag#-L} ;;
4055             *)                    echo $flag ;;
4056         esac
4057     done
4058 }
4059
4060 msvc_flags(){
4061     msvc_common_flags "$@"
4062     for flag; do
4063         case $flag in
4064             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4065                                        -wd4554 ;;
4066             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4067                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4068                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4069                                        -wd4307 \
4070                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4071         esac
4072     done
4073 }
4074
4075 icl_flags(){
4076     msvc_common_flags "$@"
4077     for flag; do
4078         case $flag in
4079             # Despite what Intel's documentation says -Wall, which is supported
4080             # on Windows, does enable remarks so disable them here.
4081             -Wall)                echo $flag -Qdiag-disable:remark ;;
4082             -std=c99)             echo -Qstd=c99 ;;
4083             -flto)                echo -ipo ;;
4084         esac
4085     done
4086 }
4087
4088 icc_flags(){
4089     for flag; do
4090         case $flag in
4091             -flto)                echo -ipo ;;
4092             *)                    echo $flag ;;
4093         esac
4094     done
4095 }
4096
4097 suncc_flags(){
4098     for flag; do
4099         case $flag in
4100             -march=*|-mcpu=*)
4101                 case "${flag#*=}" in
4102                     native)                   echo -xtarget=native       ;;
4103                     v9|niagara)               echo -xarch=sparc          ;;
4104                     ultrasparc)               echo -xarch=sparcvis       ;;
4105                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4106                     i586|pentium)             echo -xchip=pentium        ;;
4107                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4108                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4109                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4110                     pentium4*)          echo -xtarget=pentium4           ;;
4111                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4112                     *-sse3)             echo -xarch=sse3                 ;;
4113                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4114                     bonnell)                   echo -xarch=ssse3         ;;
4115                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4116                     westmere)                  echo -xtarget=westmere    ;;
4117                     silvermont)                echo -xarch=sse4_2        ;;
4118                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4119                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4120                                                echo -xarch=avx           ;;
4121                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4122                     btver1)                    echo -xarch=amdsse4a      ;;
4123                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4124                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4125                     k8|opteron|athlon64|athlon-fx)
4126                                                echo -xarch=sse2a         ;;
4127                     athlon*)                   echo -xarch=pentium_proa  ;;
4128                 esac
4129                 ;;
4130             -std=c99)             echo -xc99              ;;
4131             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4132             -fPIC)                echo -KPIC -xcode=pic32 ;;
4133             -W*,*)                echo $flag              ;;
4134             -f*-*|-W*|-mimpure-text)                      ;;
4135             -shared)              echo -G                 ;;
4136             *)                    echo $flag              ;;
4137         esac
4138     done
4139 }
4140
4141 probe_cc(){
4142     pfx=$1
4143     _cc=$2
4144     first=$3
4145
4146     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4147     unset _ld_o _ldflags _ld_lib _ld_path
4148     unset _depflags _DEPCMD _DEPFLAGS
4149     _flags_filter=echo
4150
4151     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4152         true # no-op to avoid reading stdin in following checks
4153     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4154         _type=llvm_gcc
4155         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4156         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4157         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4158         _cflags_speed='-O3'
4159         _cflags_size='-Os'
4160     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4161         _type=gcc
4162         gcc_version=$($_cc --version | head -n1)
4163         gcc_basever=$($_cc -dumpversion)
4164         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4165         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4166         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4167         case $gcc_basever in
4168             2) ;;
4169             2.*) ;;
4170             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4171         esac
4172         if [ "$first" = true ]; then
4173             case $gcc_basever in
4174                 4.2*)
4175                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4176             esac
4177         fi
4178         _cflags_speed='-O3'
4179         _cflags_size='-Os'
4180     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4181         _type=icc
4182         _ident=$($_cc --version | head -n1)
4183         _depflags='-MMD'
4184         _cflags_speed='-O3'
4185         _cflags_size='-Os'
4186         _cflags_noopt='-O1'
4187         _flags_filter=icc_flags
4188     elif $_cc -v 2>&1 | grep -q xlc; then
4189         _type=xlc
4190         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4191         _cflags_speed='-O5'
4192         _cflags_size='-O5 -qcompact'
4193     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4194         test -d "$sysroot" || die "No valid sysroot specified."
4195         _type=armcc
4196         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4197         armcc_conf="$PWD/armcc.conf"
4198         $_cc --arm_linux_configure                 \
4199              --arm_linux_config_file="$armcc_conf" \
4200              --configure_sysroot="$sysroot"        \
4201              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4202              die "Error creating armcc configuration file."
4203         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4204         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4205         as_default="${cross_prefix}gcc"
4206         _depflags='-MMD'
4207         _cflags_speed='-O3'
4208         _cflags_size='-Os'
4209     elif $_cc -v 2>&1 | grep -q clang; then
4210         _type=clang
4211         _ident=$($_cc --version 2>/dev/null | head -n1)
4212         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4213         _cflags_speed='-O3'
4214         _cflags_size='-Oz'
4215     elif $_cc -V 2>&1 | grep -q Sun; then
4216         _type=suncc
4217         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4218         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4219         _DEPFLAGS='-xM1 -xc99'
4220         _ldflags='-std=c99'
4221         _cflags_speed='-O5'
4222         _cflags_size='-O5 -xspace'
4223         _flags_filter=suncc_flags
4224     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4225         _type=pathscale
4226         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4227         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4228         _cflags_speed='-O2'
4229         _cflags_size='-Os'
4230         _flags_filter='filter_out -Wdisabled-optimization'
4231     elif $_cc -v 2>&1 | grep -q Open64; then
4232         _type=open64
4233         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4234         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4235         _cflags_speed='-O2'
4236         _cflags_size='-Os'
4237         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4238     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4239         _type=armasm
4240         _ident=$($_cc | head -n1)
4241         # 4509: "This form of conditional instruction is deprecated"
4242         _flags="-nologo -ignore 4509"
4243         _flags_filter=armasm_flags
4244     elif $_cc 2>&1 | grep -q Intel; then
4245         _type=icl
4246         _ident=$($_cc 2>&1 | head -n1)
4247         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4248         # Not only is O3 broken on 13.x+ but it is slower on all previous
4249         # versions (tested) as well.
4250         _cflags_speed="-O2"
4251         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4252         if $_cc 2>&1 | grep -q Linker; then
4253             _ld_o='-out:$@'
4254         else
4255             _ld_o='-Fe$@'
4256         fi
4257         _cc_o='-Fo$@'
4258         _cc_e='-P'
4259         _flags_filter=icl_flags
4260         _ld_lib='lib%.a'
4261         _ld_path='-libpath:'
4262         # -Qdiag-error to make icl error when seeing certain unknown arguments
4263         _flags='-nologo -Qdiag-error:4044,10157'
4264         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4265         # with MSVC which enables it by default.
4266         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4267         disable stripping
4268     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4269         # lld can emulate multiple different linkers; in ms link.exe mode,
4270         # the -? parameter gives the help output which contains an identifyable
4271         # string, while it gives an error in other modes.
4272         _type=lld-link
4273         # The link.exe mode doesn't have a switch for getting the version,
4274         # but we can force it back to gnu mode and get the version from there.
4275         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4276         _ld_o='-out:$@'
4277         _flags_filter=msvc_flags
4278         _ld_lib='lib%.a'
4279         _ld_path='-libpath:'
4280     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4281         _type=msvc
4282         _ident=$($_cc 2>&1 | head -n1)
4283         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4284         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4285         _cflags_speed="-O2"
4286         _cflags_size="-O1"
4287         _cflags_noopt="-O1"
4288         if $_cc -nologo- 2>&1 | grep -q Linker; then
4289             _ld_o='-out:$@'
4290         else
4291             _ld_o='-Fe$@'
4292         fi
4293         _cc_o='-Fo$@'
4294         _cc_e='-P -Fi$@'
4295         _flags_filter=msvc_flags
4296         _ld_lib='lib%.a'
4297         _ld_path='-libpath:'
4298         _flags='-nologo'
4299         disable stripping
4300     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4301         _type=cparser
4302         _ident=$($_cc --version | head -n1)
4303         _depflags='-MMD'
4304         _cflags_speed='-O4'
4305         _cflags_size='-O2'
4306         _flags_filter=cparser_flags
4307     fi
4308
4309     eval ${pfx}_type=\$_type
4310     eval ${pfx}_ident=\$_ident
4311 }
4312
4313 set_ccvars(){
4314     eval ${1}_C=\${_cc_c-\${${1}_C}}
4315     eval ${1}_E=\${_cc_e-\${${1}_E}}
4316     eval ${1}_O=\${_cc_o-\${${1}_O}}
4317
4318     if [ -n "$_depflags" ]; then
4319         eval ${1}_DEPFLAGS=\$_depflags
4320     else
4321         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4322         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4323         eval DEP${1}FLAGS=\$_flags
4324     fi
4325 }
4326
4327 probe_cc cc "$cc" "true"
4328 cflags_filter=$_flags_filter
4329 cflags_speed=$_cflags_speed
4330 cflags_size=$_cflags_size
4331 cflags_noopt=$_cflags_noopt
4332 add_cflags $_flags $_cflags
4333 cc_ldflags=$_ldflags
4334 set_ccvars CC
4335 set_ccvars CXX
4336
4337 probe_cc hostcc "$host_cc"
4338 host_cflags_filter=$_flags_filter
4339 host_cflags_speed=$_cflags_speed
4340 add_host_cflags  $_flags $_cflags
4341 set_ccvars HOSTCC
4342
4343 test -n "$cc_type" && enable $cc_type ||
4344     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4345
4346 : ${as_default:=$cc}
4347 : ${objcc_default:=$cc}
4348 : ${dep_cc_default:=$cc}
4349 : ${ld_default:=$cc}
4350 : ${host_ld_default:=$host_cc}
4351 set_default ar as objcc dep_cc ld ln_s host_ld windres
4352
4353 probe_cc as "$as"
4354 asflags_filter=$_flags_filter
4355 add_asflags $_flags $_cflags
4356 set_ccvars AS
4357
4358 probe_cc objcc "$objcc"
4359 objcflags_filter=$_flags_filter
4360 add_objcflags $_flags $_cflags
4361 set_ccvars OBJC
4362
4363 probe_cc ld "$ld"
4364 ldflags_filter=$_flags_filter
4365 add_ldflags $_flags $_ldflags
4366 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4367 LD_O=${_ld_o-$LD_O}
4368 LD_LIB=${_ld_lib-$LD_LIB}
4369 LD_PATH=${_ld_path-$LD_PATH}
4370
4371 probe_cc hostld "$host_ld"
4372 host_ldflags_filter=$_flags_filter
4373 add_host_ldflags $_flags $_ldflags
4374 HOSTLD_O=${_ld_o-$HOSTLD_O}
4375
4376 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4377     probe_cc depcc "$dep_cc"
4378     CCDEP=${_DEPCMD:-$DEPCMD}
4379     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4380     DEPCCFLAGS=$_flags
4381 fi
4382
4383 if $ar 2>&1 | grep -q Microsoft; then
4384     arflags="-nologo"
4385     ar_o='-out:$@'
4386 elif $ar 2>&1 | grep -q "\[D\] "; then
4387     arflags="rcD"
4388     ar_o='$@'
4389 else
4390     arflags="rc"
4391     ar_o='$@'
4392 fi
4393
4394 add_cflags $extra_cflags
4395 add_cxxflags $extra_cxxflags
4396 add_objcflags $extra_objcflags
4397 add_asflags $extra_cflags
4398
4399 if test -n "$sysroot"; then
4400     case "$cc_type" in
4401         gcc|llvm_gcc|clang)
4402             add_cppflags --sysroot="$sysroot"
4403             add_ldflags --sysroot="$sysroot"
4404         ;;
4405     esac
4406 fi
4407
4408 if test "$cpu" = host; then
4409     enabled cross_compile &&
4410         die "--cpu=host makes no sense when cross-compiling."
4411
4412     case "$cc_type" in
4413         gcc|llvm_gcc)
4414             check_native(){
4415                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4416                 sed -n "/cc1.*$1=/{
4417                             s/.*$1=\\([^ ]*\\).*/\\1/
4418                             p
4419                             q
4420                         }" $TMPE
4421             }
4422             cpu=$(check_native -march || check_native -mcpu)
4423         ;;
4424         clang)
4425             check_native(){
4426                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4427                 sed -n "/cc1.*-target-cpu /{
4428                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4429                             p
4430                             q
4431                         }" $TMPE
4432             }
4433             cpu=$(check_native -march)
4434         ;;
4435     esac
4436
4437     test "${cpu:-host}" = host &&
4438         die "--cpu=host not supported with compiler $cc"
4439 fi
4440
4441 # Deal with common $arch aliases
4442 case "$arch" in
4443     aarch64|arm64)
4444         arch="aarch64"
4445     ;;
4446     arm*|iPad*|iPhone*)
4447         arch="arm"
4448     ;;
4449     mips*|IP*)
4450         case "$arch" in
4451         *el)
4452             add_cppflags -EL
4453             add_ldflags -EL
4454         ;;
4455         *eb)
4456             add_cppflags -EB
4457             add_ldflags -EB
4458         ;;
4459         esac
4460         arch="mips"
4461     ;;
4462     parisc*|hppa*)
4463         arch="parisc"
4464     ;;
4465     "Power Macintosh"|ppc*|powerpc*)
4466         arch="ppc"
4467     ;;
4468     s390|s390x)
4469         arch="s390"
4470     ;;
4471     sh4|sh)
4472         arch="sh4"
4473     ;;
4474     sun4*|sparc*)
4475         arch="sparc"
4476     ;;
4477     tilegx|tile-gx)
4478         arch="tilegx"
4479     ;;
4480     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4481         arch="x86"
4482     ;;
4483 esac
4484
4485 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4486 enable $arch
4487
4488 # Add processor-specific flags
4489 if enabled aarch64; then
4490
4491     case $cpu in
4492         armv*)
4493             cpuflags="-march=$cpu"
4494         ;;
4495         *)
4496             cpuflags="-mcpu=$cpu"
4497         ;;
4498     esac
4499
4500 elif enabled alpha; then
4501
4502     cpuflags="-mcpu=$cpu"
4503
4504 elif enabled arm; then
4505
4506     check_arm_arch() {
4507         check_cpp_condition stddef.h \
4508             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4509             $cpuflags
4510     }
4511
4512     probe_arm_arch() {
4513         if   check_arm_arch 4;        then echo armv4
4514         elif check_arm_arch 4T;       then echo armv4t
4515         elif check_arm_arch 5;        then echo armv5
4516         elif check_arm_arch 5E;       then echo armv5e
4517         elif check_arm_arch 5T;       then echo armv5t
4518         elif check_arm_arch 5TE;      then echo armv5te
4519         elif check_arm_arch 5TEJ;     then echo armv5te
4520         elif check_arm_arch 6;        then echo armv6
4521         elif check_arm_arch 6J;       then echo armv6j
4522         elif check_arm_arch 6K;       then echo armv6k
4523         elif check_arm_arch 6Z;       then echo armv6z
4524         elif check_arm_arch 6ZK;      then echo armv6zk
4525         elif check_arm_arch 6T2;      then echo armv6t2
4526         elif check_arm_arch 7;        then echo armv7
4527         elif check_arm_arch 7A  7_A;  then echo armv7-a
4528         elif check_arm_arch 7S;       then echo armv7-a
4529         elif check_arm_arch 7R  7_R;  then echo armv7-r
4530         elif check_arm_arch 7M  7_M;  then echo armv7-m
4531         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4532         elif check_arm_arch 8A  8_A;  then echo armv8-a
4533         fi
4534     }
4535
4536     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4537
4538     case $cpu in
4539         armv*)
4540             cpuflags="-march=$cpu"
4541             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4542         ;;
4543         *)
4544             cpuflags="-mcpu=$cpu"
4545             case $cpu in
4546                 cortex-a*)                               subarch=armv7a  ;;
4547                 cortex-r*)                               subarch=armv7r  ;;
4548                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4549                 arm11*)                                  subarch=armv6   ;;
4550                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4551                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4552                 *)                             subarch=$(probe_arm_arch) ;;
4553             esac
4554         ;;
4555     esac
4556
4557     case "$subarch" in
4558         armv5t*)    enable fast_clz                ;;
4559         armv[6-8]*)
4560             enable fast_clz
4561             disabled fast_unaligned || enable fast_unaligned
4562             ;;
4563     esac
4564
4565 elif enabled avr32; then
4566
4567     case $cpu in
4568         ap7[02]0[0-2])
4569             subarch="avr32_ap"
4570             cpuflags="-mpart=$cpu"
4571         ;;
4572         ap)
4573             subarch="avr32_ap"
4574             cpuflags="-march=$cpu"
4575         ;;
4576         uc3[ab]*)
4577             subarch="avr32_uc"
4578             cpuflags="-mcpu=$cpu"
4579         ;;
4580         uc)
4581             subarch="avr32_uc"
4582             cpuflags="-march=$cpu"
4583         ;;
4584     esac
4585
4586 elif enabled bfin; then
4587
4588     cpuflags="-mcpu=$cpu"
4589
4590 elif enabled mips; then
4591
4592     cpuflags="-march=$cpu"
4593
4594     if [ "$cpu" != "generic" ]; then
4595         disable mips32r2
4596         disable mips32r5
4597         disable mips64r2
4598         disable mips32r6
4599         disable mips64r6
4600         disable loongson2
4601         disable loongson3
4602
4603         case $cpu in
4604             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4605                 enable mips32r2
4606                 disable msa
4607             ;;
4608             p5600|i6400|p6600)
4609                 disable mipsdsp
4610                 disable mipsdspr2
4611             ;;
4612             loongson*)
4613                 enable loongson2
4614                 enable loongson3
4615                 enable local_aligned
4616                 enable simd_align_16
4617                 enable fast_64bit
4618                 enable fast_clz
4619                 enable fast_cmov
4620                 enable fast_unaligned
4621                 disable aligned_stack
4622                 disable mipsfpu
4623                 disable mipsdsp
4624                 disable mipsdspr2
4625                 case $cpu in
4626                     loongson3*)
4627                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4628                     ;;
4629                     loongson2e)
4630                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4631                     ;;
4632                     loongson2f)
4633                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4634                     ;;
4635                 esac
4636             ;;
4637             *)
4638                 # Unknown CPU. Disable everything.
4639                 warn "unknown CPU. Disabling all MIPS optimizations."
4640                 disable mipsfpu
4641                 disable mipsdsp
4642                 disable mipsdspr2
4643                 disable msa
4644                 disable mmi
4645             ;;
4646         esac
4647
4648         case $cpu in
4649             24kc)
4650                 disable mipsfpu
4651                 disable mipsdsp
4652                 disable mipsdspr2
4653             ;;
4654             24kf*)
4655                 disable mipsdsp
4656                 disable mipsdspr2
4657             ;;
4658             24kec|34kc|1004kc)
4659                 disable mipsfpu
4660                 disable mipsdspr2
4661             ;;
4662             24kef*|34kf*|1004kf*)
4663                 disable mipsdspr2
4664             ;;
4665             74kc)
4666                 disable mipsfpu
4667             ;;
4668             p5600)
4669                 enable mips32r5
4670                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4671             ;;
4672             i6400)
4673                 enable mips64r6
4674                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4675             ;;
4676             p6600)
4677                 enable mips64r6
4678                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4679             ;;
4680         esac
4681     else
4682         # We do not disable anything. Is up to the user to disable the unwanted features.
4683         warn 'generic cpu selected'
4684     fi
4685
4686 elif enabled ppc; then
4687
4688     disable ldbrx
4689
4690     case $(tolower $cpu) in
4691         601|ppc601|powerpc601)
4692             cpuflags="-mcpu=601"
4693             disable altivec
4694         ;;
4695         603*|ppc603*|powerpc603*)
4696             cpuflags="-mcpu=603"
4697             disable altivec
4698         ;;
4699         604*|ppc604*|powerpc604*)
4700             cpuflags="-mcpu=604"
4701             disable altivec
4702         ;;
4703         g3|75*|ppc75*|powerpc75*)
4704             cpuflags="-mcpu=750"
4705             disable altivec
4706         ;;
4707         g4|745*|ppc745*|powerpc745*)
4708             cpuflags="-mcpu=7450"
4709             disable vsx
4710         ;;
4711         74*|ppc74*|powerpc74*)
4712             cpuflags="-mcpu=7400"
4713             disable vsx
4714         ;;
4715         g5|970|ppc970|powerpc970)
4716             cpuflags="-mcpu=970"
4717             disable vsx
4718         ;;
4719         power[3-6]*)
4720             cpuflags="-mcpu=$cpu"
4721             disable vsx
4722         ;;
4723         power[7-8]*)
4724             cpuflags="-mcpu=$cpu"
4725         ;;
4726         cell)
4727             cpuflags="-mcpu=cell"
4728             enable ldbrx
4729             disable vsx
4730         ;;
4731         e500mc)
4732             cpuflags="-mcpu=e500mc"
4733             disable altivec
4734         ;;
4735         e500v2)
4736             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4737             disable altivec
4738             disable dcbzl
4739         ;;
4740         e500)
4741             cpuflags="-mcpu=8540 -mhard-float"
4742             disable altivec
4743             disable dcbzl
4744         ;;
4745     esac
4746
4747 elif enabled sparc; then
4748
4749     case $cpu in
4750         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4751             cpuflags="-mcpu=$cpu"
4752         ;;
4753         ultrasparc*|niagara[234])
4754             cpuflags="-mcpu=$cpu"
4755         ;;
4756     esac
4757
4758 elif enabled x86; then
4759
4760     case $cpu in
4761         i[345]86|pentium)
4762             cpuflags="-march=$cpu"
4763             disable i686
4764             disable mmx
4765         ;;
4766         # targets that do NOT support nopl and conditional mov (cmov)
4767         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4768             cpuflags="-march=$cpu"
4769             disable i686
4770         ;;
4771         # targets that do support nopl and conditional mov (cmov)
4772         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4773         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4774         |amdfam10|barcelona|b[dt]ver*|znver*)
4775             cpuflags="-march=$cpu"
4776             enable i686
4777             enable fast_cmov
4778         ;;
4779         # targets that do support conditional mov but on which it's slow
4780         pentium4|pentium4m|prescott|nocona)
4781             cpuflags="-march=$cpu"
4782             enable i686
4783             disable fast_cmov
4784         ;;
4785     esac
4786
4787 fi
4788
4789 if [ "$cpu" != generic ]; then
4790     add_cflags  $cpuflags
4791     add_asflags $cpuflags
4792     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4793 fi
4794
4795 # compiler sanity check
4796 check_exec <<EOF
4797 int main(void){ return 0; }
4798 EOF
4799 if test "$?" != 0; then
4800     echo "$cc is unable to create an executable file."
4801     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4802         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4803         echo "Only do this if you know what cross compiling means."
4804     fi
4805     die "C compiler test failed."
4806 fi
4807
4808 add_cppflags -D_ISOC99_SOURCE
4809 add_cxxflags -D__STDC_CONSTANT_MACROS
4810 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4811
4812 # some compilers silently accept -std=c11, so we also need to check that the
4813 # version macro is defined properly
4814 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4815     add_cflags -std=c11 ||
4816     check_cflags -std=c99
4817
4818 check_cppflags -D_FILE_OFFSET_BITS=64
4819 check_cppflags -D_LARGEFILE_SOURCE
4820
4821 add_host_cppflags -D_ISOC99_SOURCE
4822 check_host_cflags -std=c99
4823 check_host_cflags -Wall
4824 check_host_cflags $host_cflags_speed
4825
4826 check_64bit(){
4827     arch32=$1
4828     arch64=$2
4829     expr=$3
4830     check_code cc "" "int test[2*($expr) - 1]" &&
4831         subarch=$arch64 || subarch=$arch32
4832     enable $subarch
4833 }
4834
4835 case "$arch" in
4836     aarch64|alpha|ia64)
4837         enabled shared && enable_weak pic
4838     ;;
4839     mips)
4840         check_64bit mips mips64 '_MIPS_SIM > 1'
4841         enabled shared && enable_weak pic
4842     ;;
4843     parisc)
4844         check_64bit parisc parisc64 'sizeof(void *) > 4'
4845         enabled shared && enable_weak pic
4846     ;;
4847     ppc)
4848         check_64bit ppc ppc64 'sizeof(void *) > 4'
4849         enabled shared && enable_weak pic
4850     ;;
4851     s390)
4852         check_64bit s390 s390x 'sizeof(void *) > 4'
4853         enabled shared && enable_weak pic
4854     ;;
4855     sparc)
4856         check_64bit sparc sparc64 'sizeof(void *) > 4'
4857         enabled shared && enable_weak pic
4858     ;;
4859     x86)
4860         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4861         # Treat x32 as x64 for now. Note it also needs pic if shared
4862         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4863             subarch=x86_64 && enable x86_64 && disable x86_32
4864         if enabled x86_64; then
4865             enabled shared && enable_weak pic
4866             objformat=elf64
4867         fi
4868     ;;
4869 esac
4870
4871 # OS specific
4872 case $target_os in
4873     aix)
4874         SHFLAGS=-shared
4875         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4876         enabled shared && add_ldflags -Wl,-brtl
4877         arflags='-Xany -r -c'
4878         ;;
4879     android)
4880         disable symver
4881         enable section_data_rel_ro
4882         SLIB_INSTALL_NAME='$(SLIBNAME)'
4883         SLIB_INSTALL_LINKS=
4884         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4885         ;;
4886     haiku)
4887         prefix_default="/boot/common"
4888         network_extralibs="-lnetwork"
4889         host_extralibs=
4890         ;;
4891     sunos)
4892         SHFLAGS='-shared -Wl,-h,$$(@F)'
4893         enabled x86 && append SHFLAGS -mimpure-text
4894         network_extralibs="-lsocket -lnsl"
4895         add_cppflags -D__EXTENSIONS__
4896         # When using suncc to build, the Solaris linker will mark
4897         # an executable with each instruction set encountered by
4898         # the Solaris assembler.  As our libraries contain their own
4899         # guards for processor-specific code, instead suppress
4900         # generation of the HWCAPS ELF section on Solaris x86 only.
4901         enabled_all suncc x86 &&
4902             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4903             add_ldflags -Wl,-M,mapfile
4904         nm_default='nm -P -g'
4905         version_script='-M'
4906         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4907         ;;
4908     netbsd)
4909         disable symver
4910         oss_indev_extralibs="-lossaudio"
4911         oss_outdev_extralibs="-lossaudio"
4912         enabled gcc || check_ldflags -Wl,-zmuldefs
4913         ;;
4914     openbsd|bitrig)
4915         disable symver
4916         SHFLAGS='-shared'
4917         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4918         SLIB_INSTALL_LINKS=
4919         oss_indev_extralibs="-lossaudio"
4920         oss_outdev_extralibs="-lossaudio"
4921         ;;
4922     dragonfly)
4923         disable symver
4924         ;;
4925     freebsd)
4926         ;;
4927     bsd/os)
4928         add_extralibs -lpoll -lgnugetopt
4929         strip="strip -d"
4930         ;;
4931     darwin)
4932         enabled ppc && add_asflags -force_cpusubtype_ALL
4933         install_name_dir_default='$(SHLIBDIR)'
4934         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4935         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4936         strip="${strip} -x"
4937         add_ldflags -Wl,-dynamic,-search_paths_first
4938         check_cflags -Werror=partial-availability
4939         SLIBSUF=".dylib"
4940         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4941         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
494