git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL 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-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 318   --enable-omx             enable OpenMAX IL code [no]
 319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 324
 325 Toolchain options:
 326   --arch=ARCH              select architecture [$arch]
 327   --cpu=CPU                select the minimum required CPU (affects
 328                            instruction selection, may crash on older CPUs)
 329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 330   --progs-suffix=SUFFIX    program name suffix []
 331   --enable-cross-compile   assume a cross-compiler is used
 332   --sysroot=PATH           root of cross-build tree
 333   --sysinclude=PATH        location of cross-build system headers
 334   --target-os=OS           compiler targets OS [$target_os]
 335   --target-exec=CMD        command to run executables on target
 336   --target-path=DIR        path to view of build directory on target
 337   --target-samples=DIR     path to samples directory on target
 338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 339   --toolchain=NAME         set tool defaults according to NAME
 340   --nm=NM                  use nm tool NM [$nm_default]
 341   --ar=AR                  use archive tool AR [$ar_default]
 342   --as=AS                  use assembler AS [$as_default]
 343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 344   --strip=STRIP            use strip tool STRIP [$strip_default]
 345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 347   --cc=CC                  use C compiler CC [$cc_default]
 348   --cxx=CXX                use C compiler CXX [$cxx_default]
 349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 352   --ld=LD                  use linker LD [$ld_default]
 353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 357   --host-cc=HOSTCC         use host C compiler HOSTCC
 358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 360   --host-ld=HOSTLD         use host linker HOSTLD
 361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 362   --host-libs=HLIBS        use libs HLIBS when linking for host
 363   --host-os=OS             compiler host OS [$target_os]
 364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 371   --extra-version=STRING   version string suffix []
 372   --optflags=OPTFLAGS      override optimization-related compiler flags
 373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 374   --build-suffix=SUFFIX    library name suffix []
 375   --enable-pic             build position-independent code
 376   --enable-thumb           compile for Thumb instruction set
 377   --enable-lto             use link-time optimization
 378   --env="ENV=override"     override the environment variables
 379
 380 Advanced options (experts only):
 381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 382   --custom-allocator=NAME  use a supported custom allocator
 383   --disable-symver         disable symbol versioning
 384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 385   --disable-safe-bitstream-reader
 386                            disable buffer boundary checking in bitreaders
 387                            (faster, but may crash)
 388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 389
 390 Optimization options (experts only):
 391   --disable-asm            disable all assembly optimizations
 392   --disable-altivec        disable AltiVec optimizations
 393   --disable-vsx            disable VSX optimizations
 394   --disable-power8         disable POWER8 optimizations
 395   --disable-amd3dnow       disable 3DNow! optimizations
 396   --disable-amd3dnowext    disable 3DNow! extended optimizations
 397   --disable-mmx            disable MMX optimizations
 398   --disable-mmxext         disable MMXEXT optimizations
 399   --disable-sse            disable SSE optimizations
 400   --disable-sse2           disable SSE2 optimizations
 401   --disable-sse3           disable SSE3 optimizations
 402   --disable-ssse3          disable SSSE3 optimizations
 403   --disable-sse4           disable SSE4 optimizations
 404   --disable-sse42          disable SSE4.2 optimizations
 405   --disable-avx            disable AVX optimizations
 406   --disable-xop            disable XOP optimizations
 407   --disable-fma3           disable FMA3 optimizations
 408   --disable-fma4           disable FMA4 optimizations
 409   --disable-avx2           disable AVX2 optimizations
 410   --disable-aesni          disable AESNI optimizations
 411   --disable-armv5te        disable armv5te optimizations
 412   --disable-armv6          disable armv6 optimizations
 413   --disable-armv6t2        disable armv6t2 optimizations
 414   --disable-vfp            disable VFP optimizations
 415   --disable-neon           disable NEON optimizations
 416   --disable-inline-asm     disable use of inline assembly
 417   --disable-x86asm         disable use of standalone x86 assembly
 418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 420   --disable-msa            disable MSA optimizations
 421   --disable-mipsfpu        disable floating point MIPS optimizations
 422   --disable-mmi            disable Loongson SIMD optimizations
 423   --disable-fast-unaligned consider unaligned accesses slow
 424
 425 Developer options (useful when working on FFmpeg itself):
 426   --disable-debug          disable debugging symbols
 427   --enable-debug=LEVEL     set the debug level [$debuglevel]
 428   --disable-optimizations  disable compiler optimizations
 429   --enable-extra-warnings  enable more compiler warnings
 430   --disable-stripping      disable stripping of executables and shared libraries
 431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 432                            2 causes a slowdown at runtime.
 433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 435                            leaks and errors, using the specified valgrind binary.
 436                            Cannot be combined with --target-exec
 437   --enable-ftrapv          Trap arithmetic overflows
 438   --samples=PATH           location of test samples for FATE, if not set use
 439                            \$FATE_SAMPLES at make invocation time.
 440   --enable-neon-clobber-test check NEON registers for clobbering (should be
 441                            used only for debugging purposes)
 442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 443                            should be used only for debugging purposes)
 444   --enable-random          randomly enable/disable components
 445   --disable-random
 446   --enable-random=LIST     randomly enable/disable specific components or
 447   --disable-random=LIST    component groups. LIST is a comma-separated list
 448                            of NAME[:PROB] entries where NAME is a component
 449                            (group) and PROB the probability associated with
 450                            NAME (default 0.5).
 451   --random-seed=VALUE      seed value for --enable/disable-random
 452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 453                            (only applies to --disable-optimizations builds)
 454   --enable-osfuzz          Enable building fuzzer tool
 455   --libfuzzer=PATH         path to libfuzzer
 456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 457                            in the name) of tests whose result is ignored
 458   --enable-linux-perf      enable Linux Performance Monitor API
 459
 460 NOTE: Object files are built at the place where configure is launched.
 461 EOF
 462   exit 0
 463 }
 464
 465 if test -t 1 && which tput >/dev/null 2>&1; then
 466     ncolors=$(tput colors)
 467     if test -n "$ncolors" && test $ncolors -ge 8; then
 468         bold_color=$(tput bold)
 469         warn_color=$(tput setaf 3)
 470         error_color=$(tput setaf 1)
 471         reset_color=$(tput sgr0)
 472     fi
 473     # 72 used instead of 80 since that's the default of pr
 474     ncols=$(tput cols)
 475 fi
 476 : ${ncols:=72}
 477
 478 log(){
 479     echo "$@" >> $logfile
 480 }
 481
 482 log_file(){
 483     log BEGIN $1
 484     pr -n -t $1 >> $logfile
 485     log END $1
 486 }
 487
 488 warn(){
 489     log "WARNING: $*"
 490     WARNINGS="${WARNINGS}WARNING: $*\n"
 491 }
 492
 493 die(){
 494     log "$@"
 495     echo "$error_color$bold_color$@$reset_color"
 496     cat <<EOF
 497
 498 If you think configure made a mistake, make sure you are using the latest
 499 version from Git.  If the latest version fails, report the problem to the
 500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 501 EOF
 502     if disabled logging; then
 503         cat <<EOF
 504 Rerun configure with logging enabled (do not use --disable-logging), and
 505 include the log this produces with your report.
 506 EOF
 507     else
 508         cat <<EOF
 509 Include the log file "$logfile" produced by configure as this will help
 510 solve the problem.
 511 EOF
 512     fi
 513     exit 1
 514 }
 515
 516 # Avoid locale weirdness, besides we really just want to translate ASCII.
 517 toupper(){
 518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 519 }
 520
 521 tolower(){
 522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 523 }
 524
 525 c_escape(){
 526     echo "$*" | sed 's/["\\]/\\\0/g'
 527 }
 528
 529 sh_quote(){
 530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 532     echo "$v"
 533 }
 534
 535 cleanws(){
 536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 537 }
 538
 539 filter(){
 540     pat=$1
 541     shift
 542     for v; do
 543         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 544     done
 545 }
 546
 547 filter_out(){
 548     pat=$1
 549     shift
 550     for v; do
 551         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 552     done
 553 }
 554
 555 map(){
 556     m=$1
 557     shift
 558     for v; do eval $m; done
 559 }
 560
 561 add_suffix(){
 562     suffix=$1
 563     shift
 564     for v; do echo ${v}${suffix}; done
 565 }
 566
 567 set_all(){
 568     value=$1
 569     shift
 570     for var in $*; do
 571         eval $var=$value
 572     done
 573 }
 574
 575 set_weak(){
 576     value=$1
 577     shift
 578     for var; do
 579         eval : \${$var:=$value}
 580     done
 581 }
 582
 583 sanitize_var_name(){
 584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 585 }
 586
 587 set_sanitized(){
 588     var=$1
 589     shift
 590     eval $(sanitize_var_name "$var")='$*'
 591 }
 592
 593 get_sanitized(){
 594     eval echo \$$(sanitize_var_name "$1")
 595 }
 596
 597 pushvar(){
 598     for pvar in $*; do
 599         eval level=\${${pvar}_level:=0}
 600         eval ${pvar}_${level}="\$$pvar"
 601         eval ${pvar}_level=$(($level+1))
 602     done
 603 }
 604
 605 popvar(){
 606     for pvar in $*; do
 607         eval level=\${${pvar}_level:-0}
 608         test $level = 0 && continue
 609         eval level=$(($level-1))
 610         eval $pvar="\${${pvar}_${level}}"
 611         eval ${pvar}_level=$level
 612         eval unset ${pvar}_${level}
 613     done
 614 }
 615
 616 request(){
 617     for var in $*; do
 618         eval ${var}_requested=yes
 619         eval $var=
 620     done
 621 }
 622
 623 enable(){
 624     set_all yes $*
 625 }
 626
 627 disable(){
 628     set_all no $*
 629 }
 630
 631 enable_weak(){
 632     set_weak yes $*
 633 }
 634
 635 disable_weak(){
 636     set_weak no $*
 637 }
 638
 639 enable_sanitized(){
 640     for var; do
 641         enable $(sanitize_var_name $var)
 642     done
 643 }
 644
 645 disable_sanitized(){
 646     for var; do
 647         disable $(sanitize_var_name $var)
 648     done
 649 }
 650
 651 do_enable_deep(){
 652     for var; do
 653         enabled $var && continue
 654         eval sel="\$${var}_select"
 655         eval sgs="\$${var}_suggest"
 656         pushvar var sgs
 657         enable_deep $sel
 658         popvar sgs
 659         enable_deep_weak $sgs
 660         popvar var
 661     done
 662 }
 663
 664 enable_deep(){
 665     do_enable_deep $*
 666     enable $*
 667 }
 668
 669 enable_deep_weak(){
 670     for var; do
 671         disabled $var && continue
 672         pushvar var
 673         do_enable_deep $var
 674         popvar var
 675         enable_weak $var
 676     done
 677 }
 678
 679 requested(){
 680     test "${1#!}" = "$1" && op="=" || op="!="
 681     eval test "x\$${1#!}_requested" $op "xyes"
 682 }
 683
 684 enabled(){
 685     test "${1#!}" = "$1" && op="=" || op="!="
 686     eval test "x\$${1#!}" $op "xyes"
 687 }
 688
 689 disabled(){
 690     test "${1#!}" = "$1" && op="=" || op="!="
 691     eval test "x\$${1#!}" $op "xno"
 692 }
 693
 694 enabled_all(){
 695     for opt; do
 696         enabled $opt || return 1
 697     done
 698 }
 699
 700 disabled_all(){
 701     for opt; do
 702         disabled $opt || return 1
 703     done
 704 }
 705
 706 enabled_any(){
 707     for opt; do
 708         enabled $opt && return 0
 709     done
 710 }
 711
 712 disabled_any(){
 713     for opt; do
 714         disabled $opt && return 0
 715     done
 716     return 1
 717 }
 718
 719 set_default(){
 720     for opt; do
 721         eval : \${$opt:=\$${opt}_default}
 722     done
 723 }
 724
 725 is_in(){
 726     value=$1
 727     shift
 728     for var in $*; do
 729         [ $var = $value ] && return 0
 730     done
 731     return 1
 732 }
 733
 734 check_deps(){
 735     for cfg; do
 736         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 737         disabled ${cfg}_checking && continue
 738         enable ${cfg}_checking
 739
 740         eval dep_all="\$${cfg}_deps"
 741         eval dep_any="\$${cfg}_deps_any"
 742         eval dep_con="\$${cfg}_conflict"
 743         eval dep_sel="\$${cfg}_select"
 744         eval dep_sgs="\$${cfg}_suggest"
 745         eval dep_ifa="\$${cfg}_if"
 746         eval dep_ifn="\$${cfg}_if_any"
 747
 748         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 749         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 750         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 751
 752         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 753         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 754         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 755         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 756         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 758
 759         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 760
 761         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 762             # filter out library deps, these do not belong in extralibs
 763             is_in $dep $LIBRARY_LIST && continue
 764             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 765         done
 766
 767         disable ${cfg}_checking
 768     done
 769 }
 770
 771 print_config(){
 772     pfx=$1
 773     files=$2
 774     shift 2
 775     map 'eval echo "$v \${$v:-no}"' "$@" |
 776     awk "BEGIN { split(\"$files\", files) }
 777         {
 778             c = \"$pfx\" toupper(\$1);
 779             v = \$2;
 780             sub(/yes/, 1, v);
 781             sub(/no/,  0, v);
 782             for (f in files) {
 783                 file = files[f];
 784                 if (file ~ /\\.h\$/) {
 785                     printf(\"#define %s %d\\n\", c, v) >>file;
 786                 } else if (file ~ /\\.asm\$/) {
 787                     printf(\"%%define %s %d\\n\", c, v) >>file;
 788                 } else if (file ~ /\\.mak\$/) {
 789                     n = -v ? \"\" : \"!\";
 790                     printf(\"%s%s=yes\\n\", n, c) >>file;
 791                 } else if (file ~ /\\.texi\$/) {
 792                     pre = -v ? \"\" : \"@c \";
 793                     yesno = \$2;
 794                     c2 = tolower(c);
 795                     gsub(/_/, \"-\", c2);
 796                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 797                 }
 798             }
 799         }"
 800 }
 801
 802 print_enabled(){
 803     suf=$1
 804     shift
 805     for v; do
 806         enabled $v && printf "%s\n" ${v%$suf}
 807     done
 808 }
 809
 810 append(){
 811     var=$1
 812     shift
 813     eval "$var=\"\$$var $*\""
 814 }
 815
 816 prepend(){
 817     var=$1
 818     shift
 819     eval "$var=\"$* \$$var\""
 820 }
 821
 822 unique(){
 823     var=$1
 824     uniq_list=""
 825     for tok in $(eval echo \$$var); do
 826         uniq_list="$(filter_out $tok $uniq_list) $tok"
 827     done
 828     eval "$var=\"${uniq_list}\""
 829 }
 830
 831 resolve(){
 832     var=$1
 833     tmpvar=
 834     for entry in $(eval echo \$$var); do
 835         tmpvar="$tmpvar $(eval echo \$${entry})"
 836     done
 837     eval "$var=\"${tmpvar}\""
 838 }
 839
 840 add_cppflags(){
 841     append CPPFLAGS "$@"
 842 }
 843
 844 add_cflags(){
 845     append CFLAGS $($cflags_filter "$@")
 846 }
 847
 848 add_cflags_headers(){
 849     append CFLAGS_HEADERS $($cflags_filter "$@")
 850 }
 851
 852 add_cxxflags(){
 853     append CXXFLAGS $($cflags_filter "$@")
 854 }
 855
 856 add_asflags(){
 857     append ASFLAGS $($asflags_filter "$@")
 858 }
 859
 860 add_objcflags(){
 861     append OBJCFLAGS $($objcflags_filter "$@")
 862 }
 863
 864 add_ldflags(){
 865     append LDFLAGS $($ldflags_filter "$@")
 866 }
 867
 868 add_ldexeflags(){
 869     append LDEXEFLAGS $($ldflags_filter "$@")
 870 }
 871
 872 add_ldsoflags(){
 873     append LDSOFLAGS $($ldflags_filter "$@")
 874 }
 875
 876 add_stripflags(){
 877     append ASMSTRIPFLAGS "$@"
 878 }
 879
 880 add_extralibs(){
 881     prepend extralibs $($ldflags_filter "$@")
 882 }
 883
 884 add_host_cppflags(){
 885     append host_cppflags "$@"
 886 }
 887
 888 add_host_cflags(){
 889     append host_cflags $($host_cflags_filter "$@")
 890 }
 891
 892 add_host_ldflags(){
 893     append host_ldflags $($host_ldflags_filter "$@")
 894 }
 895
 896 add_compat(){
 897     append compat_objs $1
 898     shift
 899     map 'add_cppflags -D$v' "$@"
 900 }
 901
 902 check_cmd(){
 903     log "$@"
 904     "$@" >> $logfile 2>&1
 905 }
 906
 907 check_stat(){
 908     log check_stat "$@"
 909     stat "$1" >> $logfile 2>&1
 910 }
 911
 912 cc_o(){
 913     eval printf '%s\\n' $CC_O
 914 }
 915
 916 cc_e(){
 917     eval printf '%s\\n' $CC_E
 918 }
 919
 920 check_cc(){
 921     log check_cc "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 925 }
 926
 927 check_cxx(){
 928     log check_cxx "$@"
 929     cat > $TMPCPP
 930     log_file $TMPCPP
 931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 932 }
 933
 934 check_objcc(){
 935     log check_objcc "$@"
 936     cat > $TMPM
 937     log_file $TMPM
 938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 939 }
 940
 941 check_cpp(){
 942     log check_cpp "$@"
 943     cat > $TMPC
 944     log_file $TMPC
 945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 946 }
 947
 948 as_o(){
 949     eval printf '%s\\n' $AS_O
 950 }
 951
 952 check_as(){
 953     log check_as "$@"
 954     cat > $TMPS
 955     log_file $TMPS
 956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 957 }
 958
 959 check_inline_asm(){
 960     log check_inline_asm "$@"
 961     name="$1"
 962     code="$2"
 963     shift 2
 964     disable $name
 965     check_cc "$@" <<EOF && enable $name
 966 void foo(void){ __asm__ volatile($code); }
 967 EOF
 968 }
 969
 970 check_inline_asm_flags(){
 971     log check_inline_asm_flags "$@"
 972     name="$1"
 973     code="$2"
 974     flags=''
 975     shift 2
 976     while [ "$1" != "" ]; do
 977       append flags $1
 978       shift
 979     done;
 980     disable $name
 981     cat > $TMPC <<EOF
 982 void foo(void){ __asm__ volatile($code); }
 983 EOF
 984     log_file $TMPC
 985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 987 }
 988
 989 check_insn(){
 990     log check_insn "$@"
 991     check_inline_asm ${1}_inline "\"$2\""
 992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 993 }
 994
 995 check_x86asm(){
 996     log check_x86asm "$@"
 997     echo "$1" > $TMPS
 998     log_file $TMPS
 999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 #include <stdlib.h>
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     set -- $($ldflags_filter "$@")
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     headers=$1
1111     shift
1112     disable_sanitized $headers
1113     {
1114         for hdr in $headers; do
1115             print_include $hdr
1116         done
1117         echo "int x;"
1118     } | check_cpp "$@" && enable_sanitized $headers
1119 }
1120
1121 check_header_objcc(){
1122     log check_header_objcc "$@"
1123     rm -f -- "$TMPO"
1124     header=$1
1125     shift
1126     disable_sanitized $header
1127     {
1128        echo "#include <$header>"
1129        echo "int main(void) { return 0; }"
1130     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1131 }
1132
1133 check_apple_framework(){
1134     log check_apple_framework "$@"
1135     framework="$1"
1136     name="$(tolower $framework)"
1137     header="${framework}/${framework}.h"
1138     disable $name
1139     check_header_objcc $header &&
1140         enable $name && eval ${name}_extralibs='"-framework $framework"'
1141 }
1142
1143 check_func(){
1144     log check_func "$@"
1145     func=$1
1146     shift
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 extern int $func();
1150 int main(void){ $func(); }
1151 EOF
1152 }
1153
1154 check_complexfunc(){
1155     log check_complexfunc "$@"
1156     func=$1
1157     narg=$2
1158     shift 2
1159     test $narg = 2 && args="f, g" || args="f * I"
1160     disable $func
1161     check_ld "cc" "$@" <<EOF && enable $func
1162 #include <complex.h>
1163 #include <math.h>
1164 float foo(complex float f, complex float g) { return $func($args); }
1165 int main(void){ return (int) foo; }
1166 EOF
1167 }
1168
1169 check_mathfunc(){
1170     log check_mathfunc "$@"
1171     func=$1
1172     narg=$2
1173     shift 2
1174     test $narg = 2 && args="f, g" || args="f"
1175     disable $func
1176     check_ld "cc" "$@" <<EOF && enable $func
1177 #include <math.h>
1178 float foo(float f, float g) { return $func($args); }
1179 int main(void){ return (int) foo; }
1180 EOF
1181 }
1182
1183 check_func_headers(){
1184     log check_func_headers "$@"
1185     headers=$1
1186     funcs=$2
1187     shift 2
1188     {
1189         for hdr in $headers; do
1190             print_include $hdr
1191         done
1192         echo "#include <stdint.h>"
1193         for func in $funcs; do
1194             echo "long check_$func(void) { return (long) $func; }"
1195         done
1196         echo "int main(void) { int ret = 0;"
1197         # LTO could optimize out the test functions without this
1198         for func in $funcs; do
1199             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1200         done
1201         echo "return ret; }"
1202     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1203 }
1204
1205 check_class_headers_cpp(){
1206     log check_class_headers_cpp "$@"
1207     headers=$1
1208     classes=$2
1209     shift 2
1210     {
1211         for hdr in $headers; do
1212             echo "#include <$hdr>"
1213         done
1214         echo "int main(void) { "
1215         i=1
1216         for class in $classes; do
1217             echo "$class obj$i;"
1218             i=$(expr $i + 1)
1219         done
1220         echo "return 0; }"
1221     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1222 }
1223
1224 check_cpp_condition(){
1225     log check_cpp_condition "$@"
1226     header=$1
1227     condition=$2
1228     shift 2
1229     check_cpp "$@" <<EOF
1230 #include <$header>
1231 #if !($condition)
1232 #error "unsatisfied condition: $condition"
1233 #endif
1234 EOF
1235 }
1236
1237 test_cflags_cc(){
1238     log test_cflags_cc "$@"
1239     flags=$1
1240     header=$2
1241     condition=$3
1242     shift 3
1243     set -- $($cflags_filter "$flags")
1244     check_cc "$@" <<EOF
1245 #include <$header>
1246 #if !($condition)
1247 #error "unsatisfied condition: $condition"
1248 #endif
1249 EOF
1250 }
1251
1252 check_lib(){
1253     log check_lib "$@"
1254     name="$1"
1255     headers="$2"
1256     funcs="$3"
1257     shift 3
1258     disable $name
1259     check_func_headers "$headers" "$funcs" "$@" &&
1260         enable $name && eval ${name}_extralibs="\$@"
1261 }
1262
1263 check_lib_cpp(){
1264     log check_lib_cpp "$@"
1265     name="$1"
1266     headers="$2"
1267     classes="$3"
1268     shift 3
1269     disable $name
1270     check_class_headers_cpp "$headers" "$classes" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 test_pkg_config(){
1275     log test_pkg_config "$@"
1276     name="$1"
1277     pkg_version="$2"
1278     pkg="${2%% *}"
1279     headers="$3"
1280     funcs="$4"
1281     shift 4
1282     disable $name
1283     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1284     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1285     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1286     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1287         enable $name &&
1288         set_sanitized "${name}_cflags"    $pkg_cflags &&
1289         set_sanitized "${name}_extralibs" $pkg_libs
1290 }
1291
1292 check_pkg_config(){
1293     log check_pkg_config "$@"
1294     name="$1"
1295     test_pkg_config "$@" &&
1296         eval add_cflags \$${name}_cflags
1297 }
1298
1299 check_exec(){
1300     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1301 }
1302
1303 check_exec_crash(){
1304     log check_exec_crash "$@"
1305     code=$(cat)
1306
1307     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1308     # are safe but may not be available everywhere.  Thus we use
1309     # raise(SIGTERM) instead.  The check is run in a subshell so we
1310     # can redirect the "Terminated" message from the shell.  SIGBUS
1311     # is not defined by standard C so it is used conditionally.
1312
1313     (check_exec "$@") >> $logfile 2>&1 <<EOF
1314 #include <signal.h>
1315 static void sighandler(int sig){
1316     raise(SIGTERM);
1317 }
1318 int foo(void){
1319     $code
1320 }
1321 int (*func_ptr)(void) = foo;
1322 int main(void){
1323     signal(SIGILL, sighandler);
1324     signal(SIGFPE, sighandler);
1325     signal(SIGSEGV, sighandler);
1326 #ifdef SIGBUS
1327     signal(SIGBUS, sighandler);
1328 #endif
1329     return func_ptr();
1330 }
1331 EOF
1332 }
1333
1334 check_type(){
1335     log check_type "$@"
1336     headers=$1
1337     type=$2
1338     shift 2
1339     disable_sanitized "$type"
1340     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1341 }
1342
1343 check_struct(){
1344     log check_struct "$@"
1345     headers=$1
1346     struct=$2
1347     member=$3
1348     shift 3
1349     disable_sanitized "${struct}_${member}"
1350     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1351         enable_sanitized "${struct}_${member}"
1352 }
1353
1354 check_builtin(){
1355     log check_builtin "$@"
1356     name=$1
1357     headers=$2
1358     builtin=$3
1359     shift 3
1360     disable "$name"
1361     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1362 }
1363
1364 check_compile_assert(){
1365     log check_compile_assert "$@"
1366     name=$1
1367     headers=$2
1368     condition=$3
1369     shift 3
1370     disable "$name"
1371     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1372 }
1373
1374 require(){
1375     log require "$@"
1376     name_version="$1"
1377     name="${1%% *}"
1378     headers="$2"
1379     func="$3"
1380     shift 3
1381     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1382 }
1383
1384 require_cpp(){
1385     name="$1"
1386     headers="$2"
1387     classes="$3"
1388     shift 3
1389     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1390 }
1391
1392 require_header(){
1393     log require_header "$@"
1394     headers="$1"
1395     shift
1396     check_header "$headers" "$@" || die "ERROR: $headers not found"
1397 }
1398
1399 require_cpp_condition(){
1400     log require_cpp_condition "$@"
1401     header="$1"
1402     condition="$2"
1403     shift 2
1404     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1405 }
1406
1407 require_pkg_config(){
1408     log require_pkg_config "$@"
1409     pkg_version="$2"
1410     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1411 }
1412
1413 hostcc_e(){
1414     eval printf '%s\\n' $HOSTCC_E
1415 }
1416
1417 hostcc_o(){
1418     eval printf '%s\\n' $HOSTCC_O
1419 }
1420
1421 check_host_cc(){
1422     log check_host_cc "$@"
1423     cat > $TMPC
1424     log_file $TMPC
1425     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1426 }
1427
1428 check_host_cpp(){
1429     log check_host_cpp "$@"
1430     cat > $TMPC
1431     log_file $TMPC
1432     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1433 }
1434
1435 check_host_cppflags(){
1436     log check_host_cppflags "$@"
1437     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1438 #include <stdlib.h>
1439 EOF
1440 }
1441
1442 check_host_cflags(){
1443     log check_host_cflags "$@"
1444     set -- $($host_cflags_filter "$@")
1445     check_host_cc "$@" <<EOF && append host_cflags "$@"
1446 int x;
1447 EOF
1448 }
1449
1450 check_host_cpp_condition(){
1451     log check_host_cpp_condition "$@"
1452     header=$1
1453     condition=$2
1454     shift 2
1455     check_host_cpp "$@" <<EOF
1456 #include <$header>
1457 #if !($condition)
1458 #error "unsatisfied condition: $condition"
1459 #endif
1460 EOF
1461 }
1462
1463 cp_if_changed(){
1464     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1465     mkdir -p "$(dirname $2)"
1466     cp -f "$1" "$2"
1467 }
1468
1469 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1470 # system-dependent things.
1471
1472 AVCODEC_COMPONENTS="
1473     bsfs
1474     decoders
1475     encoders
1476     hwaccels
1477     parsers
1478 "
1479
1480 AVDEVICE_COMPONENTS="
1481     indevs
1482     outdevs
1483 "
1484
1485 AVFILTER_COMPONENTS="
1486     filters
1487 "
1488
1489 AVFORMAT_COMPONENTS="
1490     demuxers
1491     muxers
1492     protocols
1493 "
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500 "
1501
1502 EXAMPLE_LIST="
1503     avio_dir_cmd_example
1504     avio_reading_example
1505     decode_audio_example
1506     decode_video_example
1507     demuxing_decoding_example
1508     encode_audio_example
1509     encode_video_example
1510     extract_mvs_example
1511     filter_audio_example
1512     filtering_audio_example
1513     filtering_video_example
1514     http_multiclient_example
1515     hw_decode_example
1516     metadata_example
1517     muxing_example
1518     qsvdec_example
1519     remuxing_example
1520     resampling_audio_example
1521     scaling_video_example
1522     transcode_aac_example
1523     transcoding_example
1524 "
1525
1526 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1527     alsa
1528     appkit
1529     avfoundation
1530     bzlib
1531     coreimage
1532     iconv
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     lzma
1538     schannel
1539     sdl2
1540     securetransport
1541     sndio
1542     xlib
1543     zlib
1544 "
1545
1546 EXTERNAL_LIBRARY_GPL_LIST="
1547     avisynth
1548     frei0r
1549     libcdio
1550     librubberband
1551     libvidstab
1552     libx264
1553     libx265
1554     libxavs
1555     libxvid
1556 "
1557
1558 EXTERNAL_LIBRARY_NONFREE_LIST="
1559     decklink
1560     libndi_newtek
1561     libfdk_aac
1562     openssl
1563 "
1564
1565 EXTERNAL_LIBRARY_VERSION3_LIST="
1566     gmp
1567     libopencore_amrnb
1568     libopencore_amrwb
1569     libvmaf
1570     libvo_amrwbenc
1571     rkmpp
1572 "
1573
1574 EXTERNAL_LIBRARY_GPLV3_LIST="
1575     libsmbclient
1576 "
1577
1578 EXTERNAL_LIBRARY_LIST="
1579     $EXTERNAL_LIBRARY_GPL_LIST
1580     $EXTERNAL_LIBRARY_NONFREE_LIST
1581     $EXTERNAL_LIBRARY_VERSION3_LIST
1582     $EXTERNAL_LIBRARY_GPLV3_LIST
1583     chromaprint
1584     gcrypt
1585     gnutls
1586     jni
1587     ladspa
1588     libass
1589     libbluray
1590     libbs2b
1591     libcaca
1592     libcelt
1593     libdc1394
1594     libdrm
1595     libflite
1596     libfontconfig
1597     libfreetype
1598     libfribidi
1599     libgme
1600     libgsm
1601     libiec61883
1602     libilbc
1603     libjack
1604     libkvazaar
1605     libmodplug
1606     libmp3lame
1607     libmysofa
1608     libopencv
1609     libopenh264
1610     libopenjpeg
1611     libopenmpt
1612     libopus
1613     libpulse
1614     librsvg
1615     librtmp
1616     libshine
1617     libsmbclient
1618     libsnappy
1619     libsoxr
1620     libspeex
1621     libssh
1622     libtesseract
1623     libtheora
1624     libtwolame
1625     libv4l2
1626     libvorbis
1627     libvpx
1628     libwavpack
1629     libwebp
1630     libxml2
1631     libzimg
1632     libzmq
1633     libzvbi
1634     mediacodec
1635     openal
1636     opengl
1637 "
1638
1639 HWACCEL_AUTODETECT_LIBRARY_LIST="
1640     audiotoolbox
1641     crystalhd
1642     cuda
1643     cuvid
1644     d3d11va
1645     dxva2
1646     nvdec
1647     nvenc
1648     vaapi
1649     vdpau
1650     videotoolbox
1651     v4l2_m2m
1652     xvmc
1653 "
1654
1655 # catchall list of things that require external libs to link
1656 EXTRALIBS_LIST="
1657     cpu_init
1658     cws2fws
1659 "
1660
1661 HWACCEL_LIBRARY_NONFREE_LIST="
1662     cuda_sdk
1663     libnpp
1664 "
1665
1666 HWACCEL_LIBRARY_LIST="
1667     $HWACCEL_LIBRARY_NONFREE_LIST
1668     libmfx
1669     mmal
1670     omx
1671     opencl
1672 "
1673
1674 DOCUMENT_LIST="
1675     doc
1676     htmlpages
1677     manpages
1678     podpages
1679     txtpages
1680 "
1681
1682 FEATURE_LIST="
1683     ftrapv
1684     gray
1685     hardcoded_tables
1686     omx_rpi
1687     runtime_cpudetect
1688     safe_bitstream_reader
1689     shared
1690     small
1691     static
1692     swscale_alpha
1693 "
1694
1695 LIBRARY_LIST="
1696     avcodec
1697     avdevice
1698     avfilter
1699     avformat
1700     avresample
1701     avutil
1702     postproc
1703     swresample
1704     swscale
1705 "
1706
1707 LICENSE_LIST="
1708     gpl
1709     nonfree
1710     version3
1711 "
1712
1713 PROGRAM_LIST="
1714     ffplay
1715     ffprobe
1716     ffserver
1717     ffmpeg
1718 "
1719
1720 SUBSYSTEM_LIST="
1721     dct
1722     dwt
1723     error_resilience
1724     faan
1725     fast_unaligned
1726     fft
1727     lsp
1728     lzo
1729     mdct
1730     pixelutils
1731     network
1732     rdft
1733 "
1734
1735 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1736 CONFIG_LIST="
1737     $DOCUMENT_LIST
1738     $EXAMPLE_LIST
1739     $EXTERNAL_LIBRARY_LIST
1740     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1741     $HWACCEL_LIBRARY_LIST
1742     $HWACCEL_AUTODETECT_LIBRARY_LIST
1743     $FEATURE_LIST
1744     $LICENSE_LIST
1745     $LIBRARY_LIST
1746     $PROGRAM_LIST
1747     $SUBSYSTEM_LIST
1748     autodetect
1749     fontconfig
1750     linux_perf
1751     memory_poisoning
1752     neon_clobber_test
1753     ossfuzz
1754     pic
1755     thumb
1756     valgrind_backtrace
1757     xmm_clobber_test
1758     $COMPONENT_LIST
1759 "
1760
1761 THREADS_LIST="
1762     pthreads
1763     os2threads
1764     w32threads
1765 "
1766
1767 ATOMICS_LIST="
1768     atomics_gcc
1769     atomics_suncc
1770     atomics_win32
1771 "
1772
1773 AUTODETECT_LIBS="
1774     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1775     $HWACCEL_AUTODETECT_LIBRARY_LIST
1776     $THREADS_LIST
1777 "
1778
1779 ARCH_LIST="
1780     aarch64
1781     alpha
1782     arm
1783     avr32
1784     avr32_ap
1785     avr32_uc
1786     bfin
1787     ia64
1788     m68k
1789     mips
1790     mips64
1791     parisc
1792     ppc
1793     ppc64
1794     s390
1795     sh4
1796     sparc
1797     sparc64
1798     tilegx
1799     tilepro
1800     tomi
1801     x86
1802     x86_32
1803     x86_64
1804 "
1805
1806 ARCH_EXT_LIST_ARM="
1807     armv5te
1808     armv6
1809     armv6t2
1810     armv8
1811     neon
1812     vfp
1813     vfpv3
1814     setend
1815 "
1816
1817 ARCH_EXT_LIST_MIPS="
1818     mipsfpu
1819     mips32r2
1820     mips32r5
1821     mips64r2
1822     mips32r6
1823     mips64r6
1824     mipsdsp
1825     mipsdspr2
1826     msa
1827 "
1828
1829 ARCH_EXT_LIST_LOONGSON="
1830     loongson2
1831     loongson3
1832     mmi
1833 "
1834
1835 ARCH_EXT_LIST_X86_SIMD="
1836     aesni
1837     amd3dnow
1838     amd3dnowext
1839     avx
1840     avx2
1841     fma3
1842     fma4
1843     mmx
1844     mmxext
1845     sse
1846     sse2
1847     sse3
1848     sse4
1849     sse42
1850     ssse3
1851     xop
1852 "
1853
1854 ARCH_EXT_LIST_PPC="
1855     altivec
1856     dcbzl
1857     ldbrx
1858     power8
1859     ppc4xx
1860     vsx
1861 "
1862
1863 ARCH_EXT_LIST_X86="
1864     $ARCH_EXT_LIST_X86_SIMD
1865     cpunop
1866     i686
1867 "
1868
1869 ARCH_EXT_LIST="
1870     $ARCH_EXT_LIST_ARM
1871     $ARCH_EXT_LIST_PPC
1872     $ARCH_EXT_LIST_X86
1873     $ARCH_EXT_LIST_MIPS
1874     $ARCH_EXT_LIST_LOONGSON
1875 "
1876
1877 ARCH_FEATURES="
1878     aligned_stack
1879     fast_64bit
1880     fast_clz
1881     fast_cmov
1882     local_aligned
1883     simd_align_16
1884     simd_align_32
1885 "
1886
1887 BUILTIN_LIST="
1888     atomic_cas_ptr
1889     machine_rw_barrier
1890     MemoryBarrier
1891     mm_empty
1892     rdtsc
1893     sarestart
1894     sem_timedwait
1895     sync_val_compare_and_swap
1896 "
1897 HAVE_LIST_CMDLINE="
1898     inline_asm
1899     symver
1900     x86asm
1901 "
1902
1903 HAVE_LIST_PUB="
1904     bigendian
1905     fast_unaligned
1906 "
1907
1908 HEADERS_LIST="
1909     arpa_inet_h
1910     asm_types_h
1911     cdio_paranoia_h
1912     cdio_paranoia_paranoia_h
1913     cuda_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dxgidebug_h
1923     dxva_h
1924     ES2_gl_h
1925     gsm_h
1926     io_h
1927     machine_ioctl_bt848_h
1928     machine_ioctl_meteor_h
1929     malloc_h
1930     opencv2_core_core_c_h
1931     OpenGL_gl3_h
1932     poll_h
1933     sys_param_h
1934     sys_resource_h
1935     sys_select_h
1936     sys_soundcard_h
1937     sys_time_h
1938     sys_un_h
1939     sys_videoio_h
1940     termios_h
1941     udplite_h
1942     unistd_h
1943     valgrind_valgrind_h
1944     windows_h
1945     winsock2_h
1946 "
1947
1948 INTRINSICS_LIST="
1949     intrinsics_neon
1950 "
1951
1952 COMPLEX_FUNCS="
1953     cabs
1954     cexp
1955 "
1956
1957 MATH_FUNCS="
1958     atanf
1959     atan2f
1960     cbrt
1961     cbrtf
1962     copysign
1963     cosf
1964     erf
1965     exp2
1966     exp2f
1967     expf
1968     hypot
1969     isfinite
1970     isinf
1971     isnan
1972     ldexpf
1973     llrint
1974     llrintf
1975     log2
1976     log2f
1977     log10f
1978     lrint
1979     lrintf
1980     powf
1981     rint
1982     round
1983     roundf
1984     sinf
1985     trunc
1986     truncf
1987 "
1988
1989 SYSTEM_FEATURES="
1990     atomics_native
1991     dos_paths
1992     libc_msvcrt
1993     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1994     section_data_rel_ro
1995     threads
1996     uwp
1997     winrt
1998 "
1999
2000 SYSTEM_FUNCS="
2001     access
2002     aligned_malloc
2003     arc4random
2004     clock_gettime
2005     closesocket
2006     CommandLineToArgvW
2007     fcntl
2008     getaddrinfo
2009     gethrtime
2010     getopt
2011     GetProcessAffinityMask
2012     GetProcessMemoryInfo
2013     GetProcessTimes
2014     getrusage
2015     GetSystemTimeAsFileTime
2016     gettimeofday
2017     glob
2018     glXGetProcAddress
2019     gmtime_r
2020     inet_aton
2021     isatty
2022     kbhit
2023     localtime_r
2024     lstat
2025     lzo1x_999_compress
2026     mach_absolute_time
2027     MapViewOfFile
2028     memalign
2029     mkstemp
2030     mmap
2031     mprotect
2032     nanosleep
2033     PeekNamedPipe
2034     posix_memalign
2035     pthread_cancel
2036     sched_getaffinity
2037     SecItemImport
2038     SetConsoleTextAttribute
2039     SetConsoleCtrlHandler
2040     setmode
2041     setrlimit
2042     Sleep
2043     strerror_r
2044     sysconf
2045     sysctl
2046     usleep
2047     UTGetOSTypeFromString
2048     VirtualAlloc
2049     wglGetProcAddress
2050 "
2051
2052 SYSTEM_LIBRARIES="
2053     vaapi_drm
2054     vaapi_x11
2055     vdpau_x11
2056     wincrypt
2057 "
2058
2059 TOOLCHAIN_FEATURES="
2060     as_arch_directive
2061     as_fpu_directive
2062     as_func
2063     as_object_arch
2064     asm_mod_q
2065     blocks_extension
2066     ebp_available
2067     ebx_available
2068     gnu_as
2069     gnu_windres
2070     ibm_asm
2071     inline_asm_direct_symbol_refs
2072     inline_asm_labels
2073     inline_asm_nonlocal_labels
2074     pragma_deprecated
2075     rsync_contimeout
2076     symver_asm_label
2077     symver_gnu_asm
2078     vfp_args
2079     xform_asm
2080     xmm_clobbers
2081 "
2082
2083 TYPES_LIST="
2084     CONDITION_VARIABLE_Ptr
2085     kCMVideoCodecType_HEVC
2086     socklen_t
2087     struct_addrinfo
2088     struct_group_source_req
2089     struct_ip_mreq_source
2090     struct_ipv6_mreq
2091     struct_msghdr_msg_flags
2092     struct_pollfd
2093     struct_rusage_ru_maxrss
2094     struct_sctp_event_subscribe
2095     struct_sockaddr_in6
2096     struct_sockaddr_sa_len
2097     struct_sockaddr_storage
2098     struct_stat_st_mtim_tv_nsec
2099     struct_v4l2_frmivalenum_discrete
2100 "
2101
2102 HAVE_LIST="
2103     $ARCH_EXT_LIST
2104     $(add_suffix _external $ARCH_EXT_LIST)
2105     $(add_suffix _inline   $ARCH_EXT_LIST)
2106     $ARCH_FEATURES
2107     $ATOMICS_LIST
2108     $BUILTIN_LIST
2109     $COMPLEX_FUNCS
2110     $HAVE_LIST_CMDLINE
2111     $HAVE_LIST_PUB
2112     $HEADERS_LIST
2113     $INTRINSICS_LIST
2114     $MATH_FUNCS
2115     $SYSTEM_FEATURES
2116     $SYSTEM_FUNCS
2117     $SYSTEM_LIBRARIES
2118     $THREADS_LIST
2119     $TOOLCHAIN_FEATURES
2120     $TYPES_LIST
2121     makeinfo
2122     makeinfo_html
2123     opencl_dxva2
2124     opencl_vaapi_beignet
2125     opencl_vaapi_intel_media
2126     perl
2127     pod2man
2128     texi2html
2129 "
2130
2131 # options emitted with CONFIG_ prefix but not available on the command line
2132 CONFIG_EXTRA="
2133     aandcttables
2134     ac3dsp
2135     adts_header
2136     audio_frame_queue
2137     audiodsp
2138     blockdsp
2139     bswapdsp
2140     cabac
2141     cbs
2142     cbs_h264
2143     cbs_h265
2144     cbs_mpeg2
2145     dirac_parse
2146     dvprofile
2147     exif
2148     faandct
2149     faanidct
2150     fdctdsp
2151     flacdsp
2152     fmtconvert
2153     frame_thread_encoder
2154     g722dsp
2155     golomb
2156     gplv3
2157     h263dsp
2158     h264chroma
2159     h264dsp
2160     h264parse
2161     h264pred
2162     h264qpel
2163     hevcparse
2164     hpeldsp
2165     huffman
2166     huffyuvdsp
2167     huffyuvencdsp
2168     idctdsp
2169     iirfilter
2170     mdct15
2171     intrax8
2172     iso_media
2173     ividsp
2174     jpegtables
2175     lgplv3
2176     libx262
2177     llauddsp
2178     llviddsp
2179     llvidencdsp
2180     lpc
2181     lzf
2182     me_cmp
2183     mpeg_er
2184     mpegaudio
2185     mpegaudiodsp
2186     mpegaudioheader
2187     mpegvideo
2188     mpegvideoenc
2189     mss34dsp
2190     pixblockdsp
2191     qpeldsp
2192     qsv
2193     qsvdec
2194     qsvenc
2195     qsvvpp
2196     rangecoder
2197     riffdec
2198     riffenc
2199     rtpdec
2200     rtpenc_chain
2201     rv34dsp
2202     sinewin
2203     snappy
2204     srtp
2205     startcode
2206     texturedsp
2207     texturedspenc
2208     tpeldsp
2209     vaapi_1
2210     vaapi_encode
2211     vc1dsp
2212     videodsp
2213     vp3dsp
2214     vp56dsp
2215     vp8dsp
2216     wma_freqs
2217     wmv2dsp
2218 "
2219
2220 CMDLINE_SELECT="
2221     $ARCH_EXT_LIST
2222     $CONFIG_LIST
2223     $HAVE_LIST_CMDLINE
2224     $THREADS_LIST
2225     asm
2226     cross_compile
2227     debug
2228     extra_warnings
2229     logging
2230     lto
2231     optimizations
2232     rpath
2233     stripping
2234 "
2235
2236 PATHS_LIST="
2237     bindir
2238     datadir
2239     docdir
2240     incdir
2241     libdir
2242     mandir
2243     pkgconfigdir
2244     prefix
2245     shlibdir
2246     install_name_dir
2247 "
2248
2249 CMDLINE_SET="
2250     $PATHS_LIST
2251     ar
2252     arch
2253     as
2254     assert_level
2255     build_suffix
2256     cc
2257     objcc
2258     cpu
2259     cross_prefix
2260     custom_allocator
2261     cxx
2262     dep_cc
2263     doxygen
2264     env
2265     extra_version
2266     gas
2267     host_cc
2268     host_cflags
2269     host_extralibs
2270     host_ld
2271     host_ldflags
2272     host_os
2273     ignore_tests
2274     install
2275     ld
2276     ln_s
2277     logfile
2278     malloc_prefix
2279     nm
2280     optflags
2281     nvccflags
2282     pkg_config
2283     pkg_config_flags
2284     progs_suffix
2285     random_seed
2286     ranlib
2287     samples
2288     strip
2289     sws_max_filter_size
2290     sysinclude
2291     sysroot
2292     target_exec
2293     target_os
2294     target_path
2295     target_samples
2296     tempprefix
2297     toolchain
2298     valgrind
2299     x86asmexe
2300 "
2301
2302 CMDLINE_APPEND="
2303     extra_cflags
2304     extra_cxxflags
2305     extra_objcflags
2306     host_cppflags
2307 "
2308
2309 # code dependency declarations
2310
2311 # architecture extensions
2312
2313 armv5te_deps="arm"
2314 armv6_deps="arm"
2315 armv6t2_deps="arm"
2316 armv8_deps="aarch64"
2317 neon_deps_any="aarch64 arm"
2318 intrinsics_neon_deps="neon"
2319 vfp_deps_any="aarch64 arm"
2320 vfpv3_deps="vfp"
2321 setend_deps="arm"
2322
2323 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2324
2325 altivec_deps="ppc"
2326 dcbzl_deps="ppc"
2327 ldbrx_deps="ppc"
2328 ppc4xx_deps="ppc"
2329 vsx_deps="altivec"
2330 power8_deps="vsx"
2331
2332 loongson2_deps="mips"
2333 loongson3_deps="mips"
2334 mips32r2_deps="mips"
2335 mips32r5_deps="mips"
2336 mips32r6_deps="mips"
2337 mips64r2_deps="mips"
2338 mips64r6_deps="mips"
2339 mipsfpu_deps="mips"
2340 mipsdsp_deps="mips"
2341 mipsdspr2_deps="mips"
2342 mmi_deps="mips"
2343 msa_deps="mipsfpu"
2344
2345 cpunop_deps="i686"
2346 x86_64_select="i686"
2347 x86_64_suggest="fast_cmov"
2348
2349 amd3dnow_deps="mmx"
2350 amd3dnowext_deps="amd3dnow"
2351 i686_deps="x86"
2352 mmx_deps="x86"
2353 mmxext_deps="mmx"
2354 sse_deps="mmxext"
2355 sse2_deps="sse"
2356 sse3_deps="sse2"
2357 ssse3_deps="sse3"
2358 sse4_deps="ssse3"
2359 sse42_deps="sse4"
2360 aesni_deps="sse42"
2361 avx_deps="sse42"
2362 xop_deps="avx"
2363 fma3_deps="avx"
2364 fma4_deps="avx"
2365 avx2_deps="avx"
2366
2367 mmx_external_deps="x86asm"
2368 mmx_inline_deps="inline_asm x86"
2369 mmx_suggest="mmx_external mmx_inline"
2370
2371 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2372     eval dep=\$${ext}_deps
2373     eval ${ext}_external_deps='"${dep}_external"'
2374     eval ${ext}_inline_deps='"${dep}_inline"'
2375     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2376 done
2377
2378 aligned_stack_if_any="aarch64 ppc x86"
2379 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2380 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2381 fast_unaligned_if_any="aarch64 ppc x86"
2382 simd_align_16_if_any="altivec neon sse"
2383 simd_align_32_if_any="avx"
2384
2385 # system capabilities
2386 symver_if_any="symver_asm_label symver_gnu_asm"
2387 valgrind_backtrace_conflict="optimizations"
2388 valgrind_backtrace_deps="valgrind_valgrind_h"
2389
2390 # threading support
2391 atomics_gcc_if="sync_val_compare_and_swap"
2392 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2393 atomics_win32_if="MemoryBarrier"
2394 atomics_native_if_any="$ATOMICS_LIST"
2395 w32threads_deps="atomics_native"
2396 threads_if_any="$THREADS_LIST"
2397
2398 # subsystems
2399 cbs_h264_select="cbs golomb"
2400 cbs_h265_select="cbs golomb"
2401 cbs_mpeg2_select="cbs"
2402 dct_select="rdft"
2403 dirac_parse_select="golomb"
2404 error_resilience_select="me_cmp"
2405 faandct_deps="faan"
2406 faandct_select="fdctdsp"
2407 faanidct_deps="faan"
2408 faanidct_select="idctdsp"
2409 h264dsp_select="startcode"
2410 hevcparse_select="golomb"
2411 frame_thread_encoder_deps="encoders threads"
2412 intrax8_select="blockdsp idctdsp"
2413 mdct_select="fft"
2414 mdct15_select="fft"
2415 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2416 mpeg_er_select="error_resilience"
2417 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2418 mpegaudiodsp_select="dct"
2419 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2420 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2421 vc1dsp_select="h264chroma qpeldsp startcode"
2422 rdft_select="fft"
2423
2424 # decoders / encoders
2425 aac_decoder_select="adts_header mdct15 mdct sinewin"
2426 aac_fixed_decoder_select="mdct sinewin"
2427 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2428 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2429 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2430 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2431 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2432 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2433 adpcm_g722_decoder_select="g722dsp"
2434 adpcm_g722_encoder_select="g722dsp"
2435 aic_decoder_select="golomb idctdsp"
2436 alac_encoder_select="lpc"
2437 als_decoder_select="bswapdsp"
2438 amrnb_decoder_select="lsp"
2439 amrwb_decoder_select="lsp"
2440 amv_decoder_select="sp5x_decoder exif"
2441 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2442 ape_decoder_select="bswapdsp llauddsp"
2443 apng_decoder_deps="zlib"
2444 apng_encoder_deps="zlib"
2445 apng_encoder_select="llvidencdsp"
2446 aptx_decoder_select="audio_frame_queue"
2447 aptx_encoder_select="audio_frame_queue"
2448 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2449 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2450 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2451 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2452 atrac1_decoder_select="mdct sinewin"
2453 atrac3_decoder_select="mdct"
2454 atrac3p_decoder_select="mdct sinewin"
2455 avrn_decoder_select="exif jpegtables"
2456 bink_decoder_select="blockdsp hpeldsp"
2457 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2458 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2459 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2460 clearvideo_decoder_select="idctdsp"
2461 cllc_decoder_select="bswapdsp"
2462 comfortnoise_encoder_select="lpc"
2463 cook_decoder_select="audiodsp mdct sinewin"
2464 cscd_decoder_select="lzo"
2465 cscd_decoder_suggest="zlib"
2466 dca_decoder_select="mdct"
2467 dds_decoder_select="texturedsp"
2468 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2469 dnxhd_decoder_select="blockdsp idctdsp"
2470 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2471 dolby_e_decoder_select="mdct"
2472 dvvideo_decoder_select="dvprofile idctdsp"
2473 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2474 dxa_decoder_deps="zlib"
2475 dxv_decoder_select="lzf texturedsp"
2476 eac3_decoder_select="ac3_decoder"
2477 eac3_encoder_select="ac3_encoder"
2478 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2479 eatgq_decoder_select="aandcttables"
2480 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2481 exr_decoder_deps="zlib"
2482 ffv1_decoder_select="rangecoder"
2483 ffv1_encoder_select="rangecoder"
2484 ffvhuff_decoder_select="huffyuv_decoder"
2485 ffvhuff_encoder_select="huffyuv_encoder"
2486 fic_decoder_select="golomb"
2487 flac_decoder_select="flacdsp"
2488 flac_encoder_select="bswapdsp flacdsp lpc"
2489 flashsv2_decoder_deps="zlib"
2490 flashsv2_encoder_deps="zlib"
2491 flashsv_decoder_deps="zlib"
2492 flashsv_encoder_deps="zlib"
2493 flv_decoder_select="h263_decoder"
2494 flv_encoder_select="h263_encoder"
2495 fourxm_decoder_select="blockdsp bswapdsp"
2496 fraps_decoder_select="bswapdsp huffman"
2497 g2m_decoder_deps="zlib"
2498 g2m_decoder_select="blockdsp idctdsp jpegtables"
2499 g729_decoder_select="audiodsp"
2500 h261_decoder_select="mpegvideo"
2501 h261_encoder_select="aandcttables mpegvideoenc"
2502 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2503 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2504 h263i_decoder_select="h263_decoder"
2505 h263p_decoder_select="h263_decoder"
2506 h263p_encoder_select="h263_encoder"
2507 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2508 h264_decoder_suggest="error_resilience"
2509 hap_decoder_select="snappy texturedsp"
2510 hap_encoder_deps="libsnappy"
2511 hap_encoder_select="texturedspenc"
2512 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2513 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2514 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2515 iac_decoder_select="imc_decoder"
2516 imc_decoder_select="bswapdsp fft mdct sinewin"
2517 indeo3_decoder_select="hpeldsp"
2518 indeo4_decoder_select="ividsp"
2519 indeo5_decoder_select="ividsp"
2520 interplay_video_decoder_select="hpeldsp"
2521 jpegls_decoder_select="mjpeg_decoder"
2522 jv_decoder_select="blockdsp"
2523 lagarith_decoder_select="llviddsp"
2524 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2525 magicyuv_decoder_select="llviddsp"
2526 magicyuv_encoder_select="llvidencdsp"
2527 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2528 metasound_decoder_select="lsp mdct sinewin"
2529 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2530 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2531 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2532 mjpegb_decoder_select="mjpeg_decoder"
2533 mlp_decoder_select="mlp_parser"
2534 mlp_encoder_select="lpc"
2535 motionpixels_decoder_select="bswapdsp"
2536 mp1_decoder_select="mpegaudio"
2537 mp1float_decoder_select="mpegaudio"
2538 mp2_decoder_select="mpegaudio"
2539 mp2float_decoder_select="mpegaudio"
2540 mp3_decoder_select="mpegaudio"
2541 mp3adu_decoder_select="mpegaudio"
2542 mp3adufloat_decoder_select="mpegaudio"
2543 mp3float_decoder_select="mpegaudio"
2544 mp3on4_decoder_select="mpegaudio"
2545 mp3on4float_decoder_select="mpegaudio"
2546 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2547 mpc8_decoder_select="mpegaudiodsp"
2548 mpegvideo_decoder_select="mpegvideo"
2549 mpeg1video_decoder_select="mpegvideo"
2550 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2551 mpeg2video_decoder_select="mpegvideo"
2552 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2553 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2554 mpeg4_encoder_select="h263_encoder"
2555 msa1_decoder_select="mss34dsp"
2556 mscc_decoder_deps="zlib"
2557 msmpeg4v1_decoder_select="h263_decoder"
2558 msmpeg4v2_decoder_select="h263_decoder"
2559 msmpeg4v2_encoder_select="h263_encoder"
2560 msmpeg4v3_decoder_select="h263_decoder"
2561 msmpeg4v3_encoder_select="h263_encoder"
2562 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2563 mts2_decoder_select="mss34dsp"
2564 mxpeg_decoder_select="mjpeg_decoder"
2565 nellymoser_decoder_select="mdct sinewin"
2566 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2567 nuv_decoder_select="idctdsp lzo"
2568 on2avc_decoder_select="mdct"
2569 opus_decoder_deps="swresample"
2570 opus_decoder_select="mdct15"
2571 opus_encoder_select="audio_frame_queue mdct15"
2572 png_decoder_deps="zlib"
2573 png_encoder_deps="zlib"
2574 png_encoder_select="llvidencdsp"
2575 prores_decoder_select="blockdsp idctdsp"
2576 prores_encoder_select="fdctdsp"
2577 qcelp_decoder_select="lsp"
2578 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2579 ra_144_decoder_select="audiodsp"
2580 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2581 ralf_decoder_select="golomb"
2582 rawvideo_decoder_select="bswapdsp"
2583 rscc_decoder_deps="zlib"
2584 rtjpeg_decoder_select="me_cmp"
2585 rv10_decoder_select="h263_decoder"
2586 rv10_encoder_select="h263_encoder"
2587 rv20_decoder_select="h263_decoder"
2588 rv20_encoder_select="h263_encoder"
2589 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2590 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2591 screenpresso_decoder_deps="zlib"
2592 shorten_decoder_select="bswapdsp"
2593 sipr_decoder_select="lsp"
2594 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2595 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2596 sonic_decoder_select="golomb rangecoder"
2597 sonic_encoder_select="golomb rangecoder"
2598 sonic_ls_encoder_select="golomb rangecoder"
2599 sp5x_decoder_select="mjpeg_decoder"
2600 srgc_decoder_deps="zlib"
2601 svq1_decoder_select="hpeldsp"
2602 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2603 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2604 svq3_decoder_suggest="zlib"
2605 tak_decoder_select="audiodsp"
2606 tdsc_decoder_deps="zlib"
2607 tdsc_decoder_select="mjpeg_decoder"
2608 theora_decoder_select="vp3_decoder"
2609 thp_decoder_select="mjpeg_decoder"
2610 tiff_decoder_suggest="zlib lzma"
2611 tiff_encoder_suggest="zlib"
2612 truehd_decoder_select="mlp_parser"
2613 truehd_encoder_select="lpc"
2614 truemotion2_decoder_select="bswapdsp"
2615 truespeech_decoder_select="bswapdsp"
2616 tscc_decoder_deps="zlib"
2617 twinvq_decoder_select="mdct lsp sinewin"
2618 txd_decoder_select="texturedsp"
2619 utvideo_decoder_select="bswapdsp llviddsp"
2620 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2621 vble_decoder_select="llviddsp"
2622 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2623 vc1image_decoder_select="vc1_decoder"
2624 vorbis_decoder_select="mdct"
2625 vorbis_encoder_select="mdct"
2626 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2627 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2628 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2629 vp6a_decoder_select="vp6_decoder"
2630 vp6f_decoder_select="vp6_decoder"
2631 vp7_decoder_select="h264pred videodsp vp8dsp"
2632 vp8_decoder_select="h264pred videodsp vp8dsp"
2633 vp9_decoder_select="videodsp vp9_parser"
2634 webp_decoder_select="vp8_decoder exif"
2635 wmalossless_decoder_select="llauddsp"
2636 wmapro_decoder_select="mdct sinewin wma_freqs"
2637 wmav1_decoder_select="mdct sinewin wma_freqs"
2638 wmav1_encoder_select="mdct sinewin wma_freqs"
2639 wmav2_decoder_select="mdct sinewin wma_freqs"
2640 wmav2_encoder_select="mdct sinewin wma_freqs"
2641 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2642 wmv1_decoder_select="h263_decoder"
2643 wmv1_encoder_select="h263_encoder"
2644 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2645 wmv2_encoder_select="h263_encoder wmv2dsp"
2646 wmv3_decoder_select="vc1_decoder"
2647 wmv3image_decoder_select="wmv3_decoder"
2648 xma1_decoder_select="wmapro_decoder"
2649 xma2_decoder_select="wmapro_decoder"
2650 zerocodec_decoder_deps="zlib"
2651 zlib_decoder_deps="zlib"
2652 zlib_encoder_deps="zlib"
2653 zmbv_decoder_deps="zlib"
2654 zmbv_encoder_deps="zlib"
2655
2656 # hardware accelerators
2657 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2658 cuda_deps_any="libdl LoadLibrary"
2659 cuvid_deps="cuda"
2660 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2661 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2662 nvdec_deps="cuda"
2663 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2664 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2665 xvmc_deps="X11_extensions_XvMClib_h"
2666
2667 h263_vaapi_hwaccel_deps="vaapi"
2668 h263_vaapi_hwaccel_select="h263_decoder"
2669 h263_videotoolbox_hwaccel_deps="videotoolbox"
2670 h263_videotoolbox_hwaccel_select="h263_decoder"
2671 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2672 h264_d3d11va_hwaccel_deps="d3d11va"
2673 h264_d3d11va_hwaccel_select="h264_decoder"
2674 h264_d3d11va2_hwaccel_deps="d3d11va"
2675 h264_d3d11va2_hwaccel_select="h264_decoder"
2676 h264_dxva2_hwaccel_deps="dxva2"
2677 h264_dxva2_hwaccel_select="h264_decoder"
2678 h264_mediacodec_hwaccel_deps="mediacodec"
2679 h264_mmal_hwaccel_deps="mmal"
2680 h264_nvdec_hwaccel_deps="nvdec"
2681 h264_nvdec_hwaccel_select="h264_decoder"
2682 h264_qsv_hwaccel_deps="libmfx"
2683 h264_vaapi_hwaccel_deps="vaapi"
2684 h264_vaapi_hwaccel_select="h264_decoder"
2685 h264_vdpau_hwaccel_deps="vdpau"
2686 h264_vdpau_hwaccel_select="h264_decoder"
2687 h264_videotoolbox_hwaccel_deps="videotoolbox"
2688 h264_videotoolbox_hwaccel_select="h264_decoder"
2689 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2690 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2691 hevc_d3d11va_hwaccel_select="hevc_decoder"
2692 hevc_mediacodec_hwaccel_deps="mediacodec"
2693 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2694 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2695 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2696 hevc_dxva2_hwaccel_select="hevc_decoder"
2697 hevc_nvdec_hwaccel_deps="nvdec"
2698 hevc_nvdec_hwaccel_select="hevc_decoder"
2699 hevc_qsv_hwaccel_deps="libmfx"
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 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2707 mpeg_xvmc_hwaccel_deps="xvmc"
2708 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2709 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2710 mpeg1_nvdec_hwaccel_deps="nvdec"
2711 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2712 mpeg1_vdpau_hwaccel_deps="vdpau"
2713 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2714 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2715 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2716 mpeg1_xvmc_hwaccel_deps="xvmc"
2717 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2718 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2719 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2720 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2722 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_dxva2_hwaccel_deps="dxva2"
2724 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2726 mpeg2_mmal_hwaccel_deps="mmal"
2727 mpeg2_nvdec_hwaccel_deps="nvdec"
2728 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_qsv_hwaccel_deps="libmfx"
2730 mpeg2_vaapi_hwaccel_deps="vaapi"
2731 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2732 mpeg2_vdpau_hwaccel_deps="vdpau"
2733 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2734 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2735 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2736 mpeg2_xvmc_hwaccel_deps="xvmc"
2737 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2738 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2739 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2740 mpeg4_mmal_hwaccel_deps="mmal"
2741 mpeg4_nvdec_hwaccel_deps="nvdec"
2742 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2743 mpeg4_vaapi_hwaccel_deps="vaapi"
2744 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2745 mpeg4_vdpau_hwaccel_deps="vdpau"
2746 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2747 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2748 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2749 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2750 vc1_d3d11va_hwaccel_deps="d3d11va"
2751 vc1_d3d11va_hwaccel_select="vc1_decoder"
2752 vc1_d3d11va2_hwaccel_deps="d3d11va"
2753 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2754 vc1_dxva2_hwaccel_deps="dxva2"
2755 vc1_dxva2_hwaccel_select="vc1_decoder"
2756 vc1_mmal_hwaccel_deps="mmal"
2757 vc1_nvdec_hwaccel_deps="nvdec"
2758 vc1_nvdec_hwaccel_select="vc1_decoder"
2759 vc1_qsv_hwaccel_deps="libmfx"
2760 vc1_vaapi_hwaccel_deps="vaapi"
2761 vc1_vaapi_hwaccel_select="vc1_decoder"
2762 vc1_vdpau_hwaccel_deps="vdpau"
2763 vc1_vdpau_hwaccel_select="vc1_decoder"
2764 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2765 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2766 vp8_mediacodec_hwaccel_deps="mediacodec"
2767 vp8_qsv_hwaccel_deps="libmfx"
2768 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2769 vp9_d3d11va_hwaccel_select="vp9_decoder"
2770 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2771 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2772 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2773 vp9_dxva2_hwaccel_select="vp9_decoder"
2774 vp9_mediacodec_hwaccel_deps="mediacodec"
2775 vp9_nvdec_hwaccel_deps="nvdec"
2776 vp9_nvdec_hwaccel_select="vp9_decoder"
2777 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2778 vp9_vaapi_hwaccel_select="vp9_decoder"
2779 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2780 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2781 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2782 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2783 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2784 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2785
2786 # hardware-accelerated codecs
2787 omx_deps="libdl pthreads"
2788 omx_rpi_select="omx"
2789 qsv_deps="libmfx"
2790 qsvdec_select="qsv"
2791 qsvenc_select="qsv"
2792 qsvvpp_select="qsv"
2793 vaapi_encode_deps="vaapi"
2794 v4l2_m2m_deps_any="linux_videodev2_h"
2795
2796 hwupload_cuda_filter_deps="cuda"
2797 scale_npp_filter_deps="cuda libnpp"
2798 scale_cuda_filter_deps="cuda_sdk"
2799 thumbnail_cuda_filter_deps="cuda_sdk"
2800
2801 nvenc_deps="cuda"
2802 nvenc_deps_any="libdl LoadLibrary"
2803 nvenc_encoder_deps="nvenc"
2804
2805 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2806 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2807 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2808 h264_cuvid_decoder_deps="cuvid"
2809 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2810 h264_mediacodec_decoder_deps="mediacodec"
2811 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2812 h264_mmal_decoder_deps="mmal"
2813 h264_nvenc_encoder_deps="nvenc"
2814 h264_omx_encoder_deps="omx"
2815 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2816 h264_qsv_encoder_select="qsvenc"
2817 h264_rkmpp_decoder_deps="rkmpp"
2818 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2819 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2820 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2821 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2822 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2823 hevc_cuvid_decoder_deps="cuvid"
2824 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2825 hevc_mediacodec_decoder_deps="mediacodec"
2826 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2827 hevc_nvenc_encoder_deps="nvenc"
2828 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2829 hevc_qsv_encoder_select="hevcparse qsvenc"
2830 hevc_rkmpp_decoder_deps="rkmpp"
2831 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2832 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2833 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2834 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2835 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2836 mjpeg_cuvid_decoder_deps="cuvid"
2837 mjpeg_qsv_encoder_deps="libmfx"
2838 mjpeg_qsv_encoder_select="qsvenc"
2839 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2840 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2841 mpeg1_cuvid_decoder_deps="cuvid"
2842 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2843 mpeg2_crystalhd_decoder_select="crystalhd"
2844 mpeg2_cuvid_decoder_deps="cuvid"
2845 mpeg2_mmal_decoder_deps="mmal"
2846 mpeg2_mediacodec_decoder_deps="mediacodec"
2847 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2848 mpeg2_qsv_encoder_select="qsvenc"
2849 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2850 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2851 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2852 mpeg4_crystalhd_decoder_select="crystalhd"
2853 mpeg4_cuvid_decoder_deps="cuvid"
2854 mpeg4_mediacodec_decoder_deps="mediacodec"
2855 mpeg4_mmal_decoder_deps="mmal"
2856 mpeg4_omx_encoder_deps="omx"
2857 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2858 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2859 msmpeg4_crystalhd_decoder_select="crystalhd"
2860 nvenc_h264_encoder_select="h264_nvenc_encoder"
2861 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2862 vc1_crystalhd_decoder_select="crystalhd"
2863 vc1_cuvid_decoder_deps="cuvid"
2864 vc1_mmal_decoder_deps="mmal"
2865 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2866 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2867 vp8_cuvid_decoder_deps="cuvid"
2868 vp8_mediacodec_decoder_deps="mediacodec"
2869 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2870 vp8_rkmpp_decoder_deps="rkmpp"
2871 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2872 vp8_vaapi_encoder_select="vaapi_encode"
2873 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2874 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2875 vp9_cuvid_decoder_deps="cuvid"
2876 vp9_mediacodec_decoder_deps="mediacodec"
2877 vp9_rkmpp_decoder_deps="rkmpp"
2878 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2879 vp9_vaapi_encoder_select="vaapi_encode"
2880 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2881 wmv3_crystalhd_decoder_select="crystalhd"
2882
2883 # parsers
2884 aac_parser_select="adts_header"
2885 h264_parser_select="golomb h264dsp h264parse"
2886 hevc_parser_select="hevcparse"
2887 mpegaudio_parser_select="mpegaudioheader"
2888 mpegvideo_parser_select="mpegvideo"
2889 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2890 vc1_parser_select="vc1dsp"
2891
2892 # bitstream_filters
2893 aac_adtstoasc_bsf_select="adts_header"
2894 h264_metadata_bsf_select="cbs_h264"
2895 h264_redundant_pps_bsf_select="cbs_h264"
2896 hevc_metadata_bsf_select="cbs_h265"
2897 mjpeg2jpeg_bsf_select="jpegtables"
2898 mpeg2_metadata_bsf_select="cbs_mpeg2"
2899 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2900
2901 # external libraries
2902 aac_at_decoder_deps="audiotoolbox"
2903 ac3_at_decoder_deps="audiotoolbox"
2904 ac3_at_decoder_select="ac3_parser"
2905 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2906 alac_at_decoder_deps="audiotoolbox"
2907 amr_nb_at_decoder_deps="audiotoolbox"
2908 avisynth_deps_any="libdl LoadLibrary"
2909 avisynth_demuxer_deps="avisynth"
2910 avisynth_demuxer_select="riffdec"
2911 eac3_at_decoder_deps="audiotoolbox"
2912 eac3_at_decoder_select="ac3_parser"
2913 gsm_ms_at_decoder_deps="audiotoolbox"
2914 ilbc_at_decoder_deps="audiotoolbox"
2915 mp1_at_decoder_deps="audiotoolbox"
2916 mp2_at_decoder_deps="audiotoolbox"
2917 mp3_at_decoder_deps="audiotoolbox"
2918 mp1_at_decoder_select="mpegaudioheader"
2919 mp2_at_decoder_select="mpegaudioheader"
2920 mp3_at_decoder_select="mpegaudioheader"
2921 pcm_alaw_at_decoder_deps="audiotoolbox"
2922 pcm_mulaw_at_decoder_deps="audiotoolbox"
2923 qdmc_at_decoder_deps="audiotoolbox"
2924 qdm2_at_decoder_deps="audiotoolbox"
2925 aac_at_encoder_deps="audiotoolbox"
2926 aac_at_encoder_select="audio_frame_queue"
2927 alac_at_encoder_deps="audiotoolbox"
2928 alac_at_encoder_select="audio_frame_queue"
2929 ilbc_at_encoder_deps="audiotoolbox"
2930 ilbc_at_encoder_select="audio_frame_queue"
2931 pcm_alaw_at_encoder_deps="audiotoolbox"
2932 pcm_alaw_at_encoder_select="audio_frame_queue"
2933 pcm_mulaw_at_encoder_deps="audiotoolbox"
2934 pcm_mulaw_at_encoder_select="audio_frame_queue"
2935 chromaprint_muxer_deps="chromaprint"
2936 h264_videotoolbox_encoder_deps="pthreads"
2937 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2938 hevc_videotoolbox_encoder_deps="pthreads"
2939 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2940 libcelt_decoder_deps="libcelt"
2941 libfdk_aac_decoder_deps="libfdk_aac"
2942 libfdk_aac_encoder_deps="libfdk_aac"
2943 libfdk_aac_encoder_select="audio_frame_queue"
2944 libgme_demuxer_deps="libgme"
2945 libgsm_decoder_deps="libgsm"
2946 libgsm_encoder_deps="libgsm"
2947 libgsm_ms_decoder_deps="libgsm"
2948 libgsm_ms_encoder_deps="libgsm"
2949 libilbc_decoder_deps="libilbc"
2950 libilbc_encoder_deps="libilbc"
2951 libkvazaar_encoder_deps="libkvazaar"
2952 libmodplug_demuxer_deps="libmodplug"
2953 libmp3lame_encoder_deps="libmp3lame"
2954 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2955 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2956 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2957 libopencore_amrnb_encoder_select="audio_frame_queue"
2958 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2959 libopenh264_decoder_deps="libopenh264"
2960 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2961 libopenh264_encoder_deps="libopenh264"
2962 libopenjpeg_decoder_deps="libopenjpeg"
2963 libopenjpeg_encoder_deps="libopenjpeg"
2964 libopenmpt_demuxer_deps="libopenmpt"
2965 libopus_decoder_deps="libopus"
2966 libopus_encoder_deps="libopus"
2967 libopus_encoder_select="audio_frame_queue"
2968 librsvg_decoder_deps="librsvg"
2969 libshine_encoder_deps="libshine"
2970 libshine_encoder_select="audio_frame_queue"
2971 libspeex_decoder_deps="libspeex"
2972 libspeex_encoder_deps="libspeex"
2973 libspeex_encoder_select="audio_frame_queue"
2974 libtheora_encoder_deps="libtheora"
2975 libtwolame_encoder_deps="libtwolame"
2976 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2977 libvorbis_decoder_deps="libvorbis"
2978 libvorbis_encoder_deps="libvorbis libvorbisenc"
2979 libvorbis_encoder_select="audio_frame_queue"
2980 libvpx_vp8_decoder_deps="libvpx"
2981 libvpx_vp8_encoder_deps="libvpx"
2982 libvpx_vp9_decoder_deps="libvpx"
2983 libvpx_vp9_encoder_deps="libvpx"
2984 libwavpack_encoder_deps="libwavpack"
2985 libwavpack_encoder_select="audio_frame_queue"
2986 libwebp_encoder_deps="libwebp"
2987 libwebp_anim_encoder_deps="libwebp"
2988 libx262_encoder_deps="libx262"
2989 libx264_encoder_deps="libx264"
2990 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2991 libx264rgb_encoder_select="libx264_encoder"
2992 libx265_encoder_deps="libx265"
2993 libxavs_encoder_deps="libxavs"
2994 libxvid_encoder_deps="libxvid"
2995 libzvbi_teletext_decoder_deps="libzvbi"
2996 videotoolbox_suggest="coreservices"
2997 videotoolbox_deps="corefoundation coremedia corevideo"
2998 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2999
3000 # demuxers / muxers
3001 ac3_demuxer_select="ac3_parser"
3002 aiff_muxer_select="iso_media"
3003 asf_demuxer_select="riffdec"
3004 asf_o_demuxer_select="riffdec"
3005 asf_muxer_select="riffenc"
3006 asf_stream_muxer_select="asf_muxer"
3007 avi_demuxer_select="iso_media riffdec exif"
3008 avi_muxer_select="riffenc"
3009 caf_demuxer_select="iso_media riffdec"
3010 caf_muxer_select="iso_media"
3011 dash_muxer_select="mp4_muxer"
3012 dash_demuxer_deps="libxml2"
3013 dirac_demuxer_select="dirac_parser"
3014 dts_demuxer_select="dca_parser"
3015 dtshd_demuxer_select="dca_parser"
3016 dv_demuxer_select="dvprofile"
3017 dv_muxer_select="dvprofile"
3018 dxa_demuxer_select="riffdec"
3019 eac3_demuxer_select="ac3_parser"
3020 f4v_muxer_select="mov_muxer"
3021 fifo_muxer_deps="threads"
3022 flac_demuxer_select="flac_parser"
3023 hds_muxer_select="flv_muxer"
3024 hls_muxer_select="mpegts_muxer"
3025 hls_muxer_suggest="gcrypt openssl"
3026 image2_alias_pix_demuxer_select="image2_demuxer"
3027 image2_brender_pix_demuxer_select="image2_demuxer"
3028 ipod_muxer_select="mov_muxer"
3029 ismv_muxer_select="mov_muxer"
3030 matroska_audio_muxer_select="matroska_muxer"
3031 matroska_demuxer_select="iso_media riffdec"
3032 matroska_demuxer_suggest="bzlib lzo zlib"
3033 matroska_muxer_select="iso_media riffenc"
3034 mmf_muxer_select="riffenc"
3035 mov_demuxer_select="iso_media riffdec"
3036 mov_demuxer_suggest="zlib"
3037 mov_muxer_select="iso_media riffenc rtpenc_chain"
3038 mp3_demuxer_select="mpegaudio_parser"
3039 mp3_muxer_select="mpegaudioheader"
3040 mp4_muxer_select="mov_muxer"
3041 mpegts_demuxer_select="iso_media"
3042 mpegts_muxer_select="adts_muxer latm_muxer"
3043 mpegtsraw_demuxer_select="mpegts_demuxer"
3044 mxf_d10_muxer_select="mxf_muxer"
3045 mxf_opatom_muxer_select="mxf_muxer"
3046 nut_muxer_select="riffenc"
3047 nuv_demuxer_select="riffdec"
3048 oga_muxer_select="ogg_muxer"
3049 ogg_demuxer_select="dirac_parse"
3050 ogv_muxer_select="ogg_muxer"
3051 opus_muxer_select="ogg_muxer"
3052 psp_muxer_select="mov_muxer"
3053 rtp_demuxer_select="sdp_demuxer"
3054 rtp_muxer_select="golomb"
3055 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3056 rtsp_demuxer_select="http_protocol rtpdec"
3057 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3058 sap_demuxer_select="sdp_demuxer"
3059 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3060 sdp_demuxer_select="rtpdec"
3061 smoothstreaming_muxer_select="ismv_muxer"
3062 spdif_demuxer_select="adts_header"
3063 spdif_muxer_select="adts_header"
3064 spx_muxer_select="ogg_muxer"
3065 swf_demuxer_suggest="zlib"
3066 tak_demuxer_select="tak_parser"
3067 tg2_muxer_select="mov_muxer"
3068 tgp_muxer_select="mov_muxer"
3069 vobsub_demuxer_select="mpegps_demuxer"
3070 w64_demuxer_select="wav_demuxer"
3071 w64_muxer_select="wav_muxer"
3072 wav_demuxer_select="riffdec"
3073 wav_muxer_select="riffenc"
3074 webm_muxer_select="iso_media riffenc"
3075 webm_dash_manifest_demuxer_select="matroska_demuxer"
3076 wtv_demuxer_select="mpegts_demuxer riffdec"
3077 wtv_muxer_select="mpegts_muxer riffenc"
3078 xmv_demuxer_select="riffdec"
3079 xwma_demuxer_select="riffdec"
3080
3081 # indevs / outdevs
3082 alsa_indev_deps="alsa"
3083 alsa_outdev_deps="alsa"
3084 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3085 avfoundation_indev_suggest="coregraphics applicationservices"
3086 avfoundation_indev_extralibs="-framework Foundation"
3087 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3088 caca_outdev_deps="libcaca"
3089 decklink_deps_any="libdl LoadLibrary"
3090 decklink_indev_deps="decklink threads"
3091 decklink_indev_extralibs="-lstdc++"
3092 decklink_outdev_deps="decklink threads"
3093 decklink_outdev_extralibs="-lstdc++"
3094 libndi_newtek_indev_deps="libndi_newtek"
3095 libndi_newtek_indev_extralibs="-lndi"
3096 libndi_newtek_outdev_deps="libndi_newtek"
3097 libndi_newtek_outdev_extralibs="-lndi"
3098 dshow_indev_deps="IBaseFilter"
3099 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3100 fbdev_indev_deps="linux_fb_h"
3101 fbdev_outdev_deps="linux_fb_h"
3102 gdigrab_indev_deps="CreateDIBSection"
3103 gdigrab_indev_extralibs="-lgdi32"
3104 gdigrab_indev_select="bmp_decoder"
3105 iec61883_indev_deps="libiec61883"
3106 jack_indev_deps="libjack"
3107 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3108 kmsgrab_indev_deps="libdrm"
3109 lavfi_indev_deps="avfilter"
3110 libcdio_indev_deps="libcdio"
3111 libdc1394_indev_deps="libdc1394"
3112 openal_indev_deps="openal"
3113 opengl_outdev_deps="opengl"
3114 oss_indev_deps_any="sys_soundcard_h"
3115 oss_outdev_deps_any="sys_soundcard_h"
3116 pulse_indev_deps="libpulse"
3117 pulse_outdev_deps="libpulse"
3118 sdl2_outdev_deps="sdl2"
3119 sndio_indev_deps="sndio"
3120 sndio_outdev_deps="sndio"
3121 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3122 v4l2_indev_suggest="libv4l2"
3123 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3124 v4l2_outdev_suggest="libv4l2"
3125 vfwcap_indev_deps="vfw32 vfwcap_defines"
3126 xcbgrab_indev_deps="libxcb"
3127 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3128 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3129 xv_outdev_extralibs="-lXv -lX11 -lXext"
3130
3131 # protocols
3132 async_protocol_deps="threads"
3133 bluray_protocol_deps="libbluray"
3134 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3135 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3136 ffrtmpcrypt_protocol_select="tcp_protocol"
3137 ffrtmphttp_protocol_conflict="librtmp_protocol"
3138 ffrtmphttp_protocol_select="http_protocol"
3139 ftp_protocol_select="tcp_protocol"
3140 gopher_protocol_select="network"
3141 http_protocol_select="tcp_protocol"
3142 http_protocol_suggest="zlib"
3143 httpproxy_protocol_select="tcp_protocol"
3144 httpproxy_protocol_suggest="zlib"
3145 https_protocol_select="tls_protocol"
3146 https_protocol_suggest="zlib"
3147 icecast_protocol_select="http_protocol"
3148 librtmp_protocol_deps="librtmp"
3149 librtmpe_protocol_deps="librtmp"
3150 librtmps_protocol_deps="librtmp"
3151 librtmpt_protocol_deps="librtmp"
3152 librtmpte_protocol_deps="librtmp"
3153 libsmbclient_protocol_deps="libsmbclient gplv3"
3154 libssh_protocol_deps="libssh"
3155 mmsh_protocol_select="http_protocol"
3156 mmst_protocol_select="network"
3157 rtmp_protocol_conflict="librtmp_protocol"
3158 rtmp_protocol_select="tcp_protocol"
3159 rtmp_protocol_suggest="zlib"
3160 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3161 rtmpe_protocol_suggest="zlib"
3162 rtmps_protocol_conflict="librtmp_protocol"
3163 rtmps_protocol_select="tls_protocol"
3164 rtmps_protocol_suggest="zlib"
3165 rtmpt_protocol_select="ffrtmphttp_protocol"
3166 rtmpt_protocol_suggest="zlib"
3167 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3168 rtmpte_protocol_suggest="zlib"
3169 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3170 rtmpts_protocol_suggest="zlib"
3171 rtp_protocol_select="udp_protocol"
3172 schannel_conflict="openssl gnutls"
3173 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3174 sctp_protocol_select="network"
3175 securetransport_conflict="openssl gnutls"
3176 srtp_protocol_select="rtp_protocol srtp"
3177 tcp_protocol_select="network"
3178 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3179 tls_protocol_select="tcp_protocol"
3180 udp_protocol_select="network"
3181 udplite_protocol_select="network"
3182 unix_protocol_deps="sys_un_h"
3183 unix_protocol_select="network"
3184
3185 # filters
3186 afftfilt_filter_deps="avcodec"
3187 afftfilt_filter_select="fft"
3188 afir_filter_deps="avcodec"
3189 afir_filter_select="fft"
3190 amovie_filter_deps="avcodec avformat"
3191 aresample_filter_deps="swresample"
3192 ass_filter_deps="libass"
3193 atempo_filter_deps="avcodec"
3194 atempo_filter_select="rdft"
3195 azmq_filter_deps="libzmq"
3196 blackframe_filter_deps="gpl"
3197 boxblur_filter_deps="gpl"
3198 bs2b_filter_deps="libbs2b"
3199 colormatrix_filter_deps="gpl"
3200 coreimage_filter_deps="coreimage appkit"
3201 coreimage_filter_extralibs="-framework OpenGL"
3202 coreimagesrc_filter_deps="coreimage appkit"
3203 coreimagesrc_filter_extralibs="-framework OpenGL"
3204 cover_rect_filter_deps="avcodec avformat gpl"
3205 cropdetect_filter_deps="gpl"
3206 deinterlace_qsv_filter_deps="libmfx"
3207 deinterlace_vaapi_filter_deps="vaapi"
3208 delogo_filter_deps="gpl"
3209 deshake_filter_select="pixelutils"
3210 deshake_filter_suggest="opencl"
3211 drawtext_filter_deps="libfreetype"
3212 drawtext_filter_suggest="libfontconfig libfribidi"
3213 elbg_filter_deps="avcodec"
3214 eq_filter_deps="gpl"
3215 fftfilt_filter_deps="avcodec"
3216 fftfilt_filter_select="rdft"
3217 find_rect_filter_deps="avcodec avformat gpl"
3218 firequalizer_filter_deps="avcodec"
3219 firequalizer_filter_select="rdft"
3220 flite_filter_deps="libflite"
3221 framerate_filter_select="pixelutils"
3222 frei0r_filter_deps="frei0r libdl"
3223 frei0r_src_filter_deps="frei0r libdl"
3224 fspp_filter_deps="gpl"
3225 geq_filter_deps="gpl"
3226 histeq_filter_deps="gpl"
3227 hqdn3d_filter_deps="gpl"
3228 interlace_filter_deps="gpl"
3229 kerndeint_filter_deps="gpl"
3230 ladspa_filter_deps="ladspa libdl"
3231 mcdeint_filter_deps="avcodec gpl"
3232 movie_filter_deps="avcodec avformat"
3233 mpdecimate_filter_deps="gpl"
3234 mpdecimate_filter_select="pixelutils"
3235 mptestsrc_filter_deps="gpl"
3236 negate_filter_deps="lut_filter"
3237 nnedi_filter_deps="gpl"
3238 ocr_filter_deps="libtesseract"
3239 ocv_filter_deps="libopencv"
3240 overlay_qsv_filter_deps="libmfx"
3241 overlay_qsv_filter_select="qsvvpp"
3242 owdenoise_filter_deps="gpl"
3243 pan_filter_deps="swresample"
3244 perspective_filter_deps="gpl"
3245 phase_filter_deps="gpl"
3246 pp7_filter_deps="gpl"
3247 pp_filter_deps="gpl postproc"
3248 pullup_filter_deps="gpl"
3249 removelogo_filter_deps="avcodec avformat swscale"
3250 repeatfields_filter_deps="gpl"
3251 resample_filter_deps="avresample"
3252 rubberband_filter_deps="librubberband"
3253 sab_filter_deps="gpl swscale"
3254 scale2ref_filter_deps="swscale"
3255 scale_filter_deps="swscale"
3256 scale_qsv_filter_deps="libmfx"
3257 select_filter_select="pixelutils"
3258 showcqt_filter_deps="avcodec avformat swscale"
3259 showcqt_filter_suggest="libfontconfig libfreetype"
3260 showcqt_filter_select="fft"
3261 showfreqs_filter_deps="avcodec"
3262 showfreqs_filter_select="fft"
3263 showspectrum_filter_deps="avcodec"
3264 showspectrum_filter_select="fft"
3265 showspectrumpic_filter_deps="avcodec"
3266 showspectrumpic_filter_select="fft"
3267 signature_filter_deps="gpl avcodec avformat"
3268 smartblur_filter_deps="gpl swscale"
3269 sofalizer_filter_deps="libmysofa avcodec"
3270 sofalizer_filter_select="fft"
3271 spectrumsynth_filter_deps="avcodec"
3272 spectrumsynth_filter_select="fft"
3273 spp_filter_deps="gpl avcodec"
3274 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3275 stereo3d_filter_deps="gpl"
3276 subtitles_filter_deps="avformat avcodec libass"
3277 super2xsai_filter_deps="gpl"
3278 pixfmts_super2xsai_test_deps="super2xsai_filter"
3279 tinterlace_filter_deps="gpl"
3280 tinterlace_merge_test_deps="tinterlace_filter"
3281 tinterlace_pad_test_deps="tinterlace_filter"
3282 tonemap_filter_deps="const_nan"
3283 uspp_filter_deps="gpl avcodec"
3284 unsharp_filter_suggest="opencl"
3285 vaguedenoiser_filter_deps="gpl"
3286 vidstabdetect_filter_deps="libvidstab"
3287 vidstabtransform_filter_deps="libvidstab"
3288 libvmaf_filter_deps="libvmaf"
3289 zmq_filter_deps="libzmq"
3290 zoompan_filter_deps="swscale"
3291 zscale_filter_deps="libzimg const_nan"
3292 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3293 vpp_qsv_filter_deps="libmfx"
3294 vpp_qsv_filter_select="qsvvpp"
3295
3296 # examples
3297 avio_dir_cmd_deps="avformat avutil"
3298 avio_reading_deps="avformat avcodec avutil"
3299 decode_audio_example_deps="avcodec avutil"
3300 decode_video_example_deps="avcodec avutil"
3301 demuxing_decoding_example_deps="avcodec avformat avutil"
3302 encode_audio_example_deps="avcodec avutil"
3303 encode_video_example_deps="avcodec avutil"
3304 extract_mvs_example_deps="avcodec avformat avutil"
3305 filter_audio_example_deps="avfilter avutil"
3306 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3307 filtering_video_example_deps="avfilter avcodec avformat avutil"
3308 http_multiclient_example_deps="avformat avutil fork"
3309 hw_decode_example_deps="avcodec avformat avutil"
3310 metadata_example_deps="avformat avutil"
3311 muxing_example_deps="avcodec avformat avutil swscale"
3312 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3313 remuxing_example_deps="avcodec avformat avutil"
3314 resampling_audio_example_deps="avutil swresample"
3315 scaling_video_example_deps="avutil swscale"
3316 transcode_aac_example_deps="avcodec avformat swresample"
3317 transcoding_example_deps="avfilter avcodec avformat avutil"
3318
3319 # EXTRALIBS_LIST
3320 cpu_init_extralibs="pthreads_extralibs"
3321 cws2fws_extralibs="zlib_extralibs"
3322
3323 # libraries, in linking order
3324 avcodec_deps="avutil"
3325 avcodec_suggest="libm"
3326 avcodec_select="null_bsf"
3327 avdevice_deps="avformat avcodec avutil"
3328 avdevice_suggest="libm"
3329 avfilter_deps="avutil"
3330 avfilter_suggest="libm"
3331 avformat_deps="avcodec avutil"
3332 avformat_suggest="libm network zlib"
3333 avresample_deps="avutil"
3334 avresample_suggest="libm"
3335 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3336 postproc_deps="avutil gpl"
3337 postproc_suggest="libm"
3338 swresample_deps="avutil"
3339 swresample_suggest="libm libsoxr"
3340 swscale_deps="avutil"
3341 swscale_suggest="libm"
3342
3343 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3344 avfilter_extralibs="pthreads_extralibs"
3345 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3346
3347 # programs
3348 ffmpeg_deps="avcodec avfilter avformat swresample"
3349 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3350                null_filter
3351                trim_filter"
3352 ffmpeg_suggest="ole32 psapi shell32"
3353 ffplay_deps="avcodec avformat swscale swresample sdl2"
3354 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3355 ffplay_suggest="shell32"
3356 ffprobe_deps="avcodec avformat"
3357 ffprobe_suggest="shell32"
3358 ffserver_deps="avformat fork sarestart"
3359 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3360
3361 # documentation
3362 podpages_deps="perl"
3363 manpages_deps="perl pod2man"
3364 htmlpages_deps="perl"
3365 htmlpages_deps_any="makeinfo_html texi2html"
3366 txtpages_deps="perl makeinfo"
3367 doc_deps_any="manpages htmlpages podpages txtpages"
3368
3369 # default parameters
3370
3371 logfile="ffbuild/config.log"
3372
3373 # installation paths
3374 prefix_default="/usr/local"
3375 bindir_default='${prefix}/bin'
3376 datadir_default='${prefix}/share/ffmpeg'
3377 docdir_default='${prefix}/share/doc/ffmpeg'
3378 incdir_default='${prefix}/include'
3379 libdir_default='${prefix}/lib'
3380 mandir_default='${prefix}/share/man'
3381
3382 # toolchain
3383 ar_default="ar"
3384 cc_default="gcc"
3385 cxx_default="g++"
3386 host_cc_default="gcc"
3387 doxygen_default="doxygen"
3388 install="install"
3389 ln_s_default="ln -s -f"
3390 nm_default="nm -g"
3391 pkg_config_default=pkg-config
3392 ranlib_default="ranlib"
3393 strip_default="strip"
3394 version_script='--version-script'
3395 objformat="elf32"
3396 x86asmexe_default="nasm"
3397 windres_default="windres"
3398 nvcc_default="nvcc"
3399 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3400 striptype="direct"
3401
3402 # OS
3403 target_os_default=$(tolower $(uname -s))
3404 host_os=$target_os_default
3405
3406 # machine
3407 if test "$target_os_default" = aix; then
3408     arch_default=$(uname -p)
3409     strip_default="strip -X32_64"
3410 else
3411     arch_default=$(uname -m)
3412 fi
3413 cpu="generic"
3414 intrinsics="none"
3415
3416 # configurable options
3417 enable $PROGRAM_LIST
3418 enable $DOCUMENT_LIST
3419 enable $EXAMPLE_LIST
3420 enable $(filter_out avresample $LIBRARY_LIST)
3421 enable stripping
3422
3423 enable asm
3424 enable debug
3425 enable doc
3426 enable faan faandct faanidct
3427 enable optimizations
3428 enable runtime_cpudetect
3429 enable safe_bitstream_reader
3430 enable static
3431 enable swscale_alpha
3432 enable valgrind_backtrace
3433
3434 sws_max_filter_size_default=256
3435 set_default sws_max_filter_size
3436
3437 # internal components are enabled by default
3438 enable $EXTRALIBS_LIST
3439
3440 # Avoid external, non-system, libraries getting enabled by dependency resolution
3441 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3442
3443 # build settings
3444 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3445 LIBPREF="lib"
3446 LIBSUF=".a"
3447 FULLNAME='$(NAME)$(BUILDSUF)'
3448 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3449 SLIBPREF="lib"
3450 SLIBSUF=".so"
3451 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3452 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3453 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3454 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3455 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3456 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3457 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3458
3459 asflags_filter=echo
3460 cflags_filter=echo
3461 ldflags_filter=echo
3462
3463 AS_C='-c'
3464 AS_O='-o $@'
3465 CC_C='-c'
3466 CC_E='-E -o $@'
3467 CC_O='-o $@'
3468 CXX_C='-c'
3469 CXX_O='-o $@'
3470 OBJCC_C='-c'
3471 OBJCC_E='-E -o $@'
3472 OBJCC_O='-o $@'
3473 X86ASM_O='-o $@'
3474 LD_O='-o $@'
3475 LD_LIB='-l%'
3476 LD_PATH='-L'
3477 HOSTCC_C='-c'
3478 HOSTCC_E='-E -o $@'
3479 HOSTCC_O='-o $@'
3480 HOSTLD_O='-o $@'
3481 NVCC_C='-c'
3482 NVCC_O='-o $@'
3483
3484 host_extralibs='-lm'
3485 host_cflags_filter=echo
3486 host_ldflags_filter=echo
3487
3488 target_path='$(CURDIR)'
3489
3490 # since the object filename is not given with the -MM flag, the compiler
3491 # is only able to print the basename, and we must add the path ourselves
3492 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3493 DEPFLAGS='-MM'
3494
3495 mkdir -p ffbuild
3496
3497 # find source path
3498 if test -f configure; then
3499     source_path=.
3500 else
3501     source_path=$(cd $(dirname "$0"); pwd)
3502     case "$source_path" in
3503         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3504     esac
3505     test -e "$source_path/config.h" &&
3506         die "Out of tree builds are impossible with config.h in source dir."
3507 fi
3508
3509 for v in "$@"; do
3510     r=${v#*=}
3511     l=${v%"$r"}
3512     r=$(sh_quote "$r")
3513     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3514 done
3515
3516 find_things(){
3517     thing=$1
3518     pattern=$2
3519     file=$source_path/$3
3520     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3521 }
3522
3523 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3524 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3525 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3526 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3527 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3528 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3529 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3530 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3531 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3532
3533 find_things_extern(){
3534     thing=$1
3535     pattern=$2
3536     file=$source_path/$3
3537     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3538 }
3539
3540 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3541 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3542
3543 AVCODEC_COMPONENTS_LIST="
3544     $BSF_LIST
3545     $DECODER_LIST
3546     $ENCODER_LIST
3547     $HWACCEL_LIST
3548     $PARSER_LIST
3549 "
3550
3551 AVDEVICE_COMPONENTS_LIST="
3552     $INDEV_LIST
3553     $OUTDEV_LIST
3554 "
3555
3556 AVFILTER_COMPONENTS_LIST="
3557     $FILTER_LIST
3558 "
3559
3560 AVFORMAT_COMPONENTS_LIST="
3561     $DEMUXER_LIST
3562     $MUXER_LIST
3563     $PROTOCOL_LIST
3564 "
3565
3566 ALL_COMPONENTS="
3567     $AVCODEC_COMPONENTS_LIST
3568     $AVDEVICE_COMPONENTS_LIST
3569     $AVFILTER_COMPONENTS_LIST
3570     $AVFORMAT_COMPONENTS_LIST
3571 "
3572
3573 for n in $COMPONENT_LIST; do
3574     v=$(toupper ${n%s})_LIST
3575     eval enable \$$v
3576     eval ${n}_if_any="\$$v"
3577 done
3578
3579 enable $ARCH_EXT_LIST
3580
3581 die_unknown(){
3582     echo "Unknown option \"$1\"."
3583     echo "See $0 --help for available options."
3584     exit 1
3585 }
3586
3587 print_in_columns() {
3588     cols=$(expr $ncols / 24)
3589     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3590 }
3591
3592 show_list() {
3593     suffix=_$1
3594     shift
3595     echo $* | sed s/$suffix//g | print_in_columns
3596     exit 0
3597 }
3598
3599 rand_list(){
3600     IFS=', '
3601     set -- $*
3602     unset IFS
3603     for thing; do
3604         comp=${thing%:*}
3605         prob=${thing#$comp}
3606         prob=${prob#:}
3607         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3608         echo "prob ${prob:-0.5}"
3609         printf '%s\n' $comp
3610     done
3611 }
3612
3613 do_random(){
3614     action=$1
3615     shift
3616     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3617     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3618 }
3619
3620 for opt do
3621     optval="${opt#*=}"
3622     case "$opt" in
3623         --extra-ldflags=*)
3624             add_ldflags $optval
3625         ;;
3626         --extra-ldexeflags=*)
3627             add_ldexeflags $optval
3628         ;;
3629         --extra-ldsoflags=*)
3630             add_ldsoflags $optval
3631         ;;
3632         --extra-ldlibflags=*)
3633             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3634                  "removed in the future. Use --extra-ldsoflags instead."
3635             add_ldsoflags $optval
3636         ;;
3637         --extra-libs=*)
3638             add_extralibs $optval
3639         ;;
3640         --disable-devices)
3641             disable $INDEV_LIST $OUTDEV_LIST
3642         ;;
3643         --enable-debug=*)
3644             debuglevel="$optval"
3645         ;;
3646         --disable-programs)
3647             disable $PROGRAM_LIST
3648         ;;
3649         --disable-everything)
3650             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3651         ;;
3652         --disable-all)
3653             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3654             disable $LIBRARY_LIST $PROGRAM_LIST doc
3655             enable avutil
3656         ;;
3657         --enable-random|--disable-random)
3658             action=${opt%%-random}
3659             do_random ${action#--} $COMPONENT_LIST
3660         ;;
3661         --enable-random=*|--disable-random=*)
3662             action=${opt%%-random=*}
3663             do_random ${action#--} $optval
3664         ;;
3665         --enable-sdl)
3666             enable sdl2
3667         ;;
3668         --enable-*=*|--disable-*=*)
3669             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3670             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3671             eval list=\$$(toupper $thing)_LIST
3672             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3673             list=$(filter "$name" $list)
3674             [ "$list" = "" ] && warn "Option $opt did not match anything"
3675             $action $list
3676         ;;
3677         --enable-yasm|--disable-yasm)
3678             warn "The ${opt} option is only provided for compatibility and will be\n"\
3679                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3680             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3681         ;;
3682         --yasmexe=*)
3683             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3684                  "removed in the future. Use --x86asmexe instead."
3685             x86asmexe="$optval"
3686         ;;
3687         --enable-?*|--disable-?*)
3688             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3689             if is_in $option $COMPONENT_LIST; then
3690                 test $action = disable && action=unset
3691                 eval $action \$$(toupper ${option%s})_LIST
3692             elif is_in $option $CMDLINE_SELECT; then
3693                 $action $option
3694             else
3695                 die_unknown $opt
3696             fi
3697         ;;
3698         --list-*)
3699             NAME="${opt#--list-}"
3700             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3701             NAME=${NAME%s}
3702             eval show_list $NAME \$$(toupper $NAME)_LIST
3703         ;;
3704         --help|-h) show_help
3705         ;;
3706         --quiet|-q) quiet=yes
3707         ;;
3708         --fatal-warnings) enable fatal_warnings
3709         ;;
3710         --libfuzzer=*)
3711             libfuzzer_path="$optval"
3712         ;;
3713         *)
3714             optname="${opt%%=*}"
3715             optname="${optname#--}"
3716             optname=$(echo "$optname" | sed 's/-/_/g')
3717             if is_in $optname $CMDLINE_SET; then
3718                 eval $optname='$optval'
3719             elif is_in $optname $CMDLINE_APPEND; then
3720                 append $optname "$optval"
3721             else
3722                 die_unknown $opt
3723             fi
3724         ;;
3725     esac
3726 done
3727
3728 for e in $env; do
3729     eval "export $e"
3730 done
3731
3732 if disabled autodetect; then
3733
3734     # Unless iconv is explicitely disabled by the user, we still want to probe
3735     # for the iconv from the libc.
3736     disabled iconv || enable libc_iconv
3737
3738     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3739     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3740 fi
3741 # Mark specifically enabled, but normally autodetected libraries as requested.
3742 for lib in $AUTODETECT_LIBS; do
3743     enabled $lib && request $lib
3744 done
3745 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3746 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3747 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3748
3749 disabled logging && logfile=/dev/null
3750
3751 # command line configuration sanity checks
3752
3753 # we need to build at least one lib type
3754 if ! enabled_any static shared; then
3755     cat <<EOF
3756 At least one library type must be built.
3757 Specify --enable-static to build the static libraries or --enable-shared to
3758 build the shared libraries as well. To only build the shared libraries specify
3759 --disable-static in addition to --enable-shared.
3760 EOF
3761     exit 1
3762 fi
3763
3764 die_license_disabled() {
3765     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3766 }
3767
3768 die_license_disabled_gpl() {
3769     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3770 }
3771
3772 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3773 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3774
3775 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3776 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3777
3778 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3779
3780 enabled_all gnutls openssl &&
3781     die "GnuTLS and OpenSSL must not be enabled at the same time."
3782
3783 # Disable all the library-specific components if the library itself
3784 # is disabled, see AVCODEC_LIST and following _LIST variables.
3785
3786 disable_components(){
3787     disabled ${1} && disable $(
3788         eval components="\$$(toupper ${1})_COMPONENTS"
3789         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3790     )
3791 }
3792
3793 map 'disable_components $v' $LIBRARY_LIST
3794
3795 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3796 set >> $logfile
3797
3798 test -n "$valgrind" && toolchain="valgrind-memcheck"
3799
3800 enabled ossfuzz && {
3801     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3802     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3803 }
3804
3805 case "$toolchain" in
3806     *-asan)
3807         cc_default="${toolchain%-asan}"
3808         add_cflags  -fsanitize=address
3809         add_ldflags -fsanitize=address
3810     ;;
3811     *-msan)
3812         cc_default="${toolchain%-msan}"
3813         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3814         add_ldflags -fsanitize=memory
3815     ;;
3816     *-tsan)
3817         cc_default="${toolchain%-tsan}"
3818         add_cflags  -fsanitize=thread -fPIE
3819         add_ldflags -fsanitize=thread -pie
3820         case "$toolchain" in
3821             gcc-tsan)
3822                 add_cflags  -fPIC
3823                 add_ldflags -fPIC
3824                 ;;
3825         esac
3826     ;;
3827     *-usan)
3828         cc_default="${toolchain%-usan}"
3829         add_cflags  -fsanitize=undefined
3830         add_ldflags -fsanitize=undefined
3831     ;;
3832     valgrind-*)
3833         target_exec_default="valgrind"
3834         case "$toolchain" in
3835             valgrind-massif)
3836                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3837                 ;;
3838             valgrind-memcheck)
3839                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3840                 ;;
3841         esac
3842     ;;
3843     msvc)
3844         # Check whether the current MSVC version needs the C99 converter.
3845         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3846         # support enough of C99 to build ffmpeg. Default to the new
3847         # behaviour if the regexp was unable to match anything, since this
3848         # successfully parses the version number of existing supported
3849         # versions that require the converter (MSVC 2010 and 2012).
3850         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3851         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3852             cc_default="cl"
3853             cxx_default="cl"
3854         else
3855             cc_default="c99wrap cl"
3856             cxx_default="c99wrap cl"
3857         fi
3858         ld_default="$source_path/compat/windows/mslink"
3859         nm_default="dumpbin -symbols"
3860         ar_default="lib"
3861         case "$arch" in
3862         aarch64|arm64)
3863             as_default="armasm64"
3864             ;;
3865         arm*)
3866             as_default="armasm"
3867             ;;
3868         esac
3869         target_os_default="win32"
3870         # Use a relative path for TMPDIR. This makes sure all the
3871         # ffconf temp files are written with a relative path, avoiding
3872         # issues with msys/win32 path conversion for MSVC parameters
3873         # such as -Fo<file> or -out:<file>.
3874         TMPDIR=.
3875     ;;
3876     icl)
3877         cc_default="icl"
3878         ld_default="xilink"
3879         nm_default="dumpbin -symbols"
3880         ar_default="xilib"
3881         target_os_default="win32"
3882         TMPDIR=.
3883     ;;
3884     gcov)
3885         add_cflags  -fprofile-arcs -ftest-coverage
3886         add_ldflags -fprofile-arcs -ftest-coverage
3887     ;;
3888     llvm-cov)
3889         add_cflags -fprofile-arcs -ftest-coverage
3890         add_ldflags --coverage
3891     ;;
3892     hardened)
3893         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3894         add_cflags   -fno-strict-overflow -fstack-protector-all
3895         add_ldflags  -Wl,-z,relro -Wl,-z,now
3896         add_cflags   -fPIE
3897         add_ldexeflags -fPIE -pie
3898     ;;
3899     ?*)
3900         die "Unknown toolchain $toolchain"
3901     ;;
3902 esac
3903
3904 if test -n "$cross_prefix"; then
3905     test -n "$arch" && test -n "$target_os" ||
3906         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3907     enable cross_compile
3908 fi
3909
3910 ar_default="${cross_prefix}${ar_default}"
3911 cc_default="${cross_prefix}${cc_default}"
3912 cxx_default="${cross_prefix}${cxx_default}"
3913 nm_default="${cross_prefix}${nm_default}"
3914 pkg_config_default="${cross_prefix}${pkg_config_default}"
3915 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3916     ranlib_default="${cross_prefix}${ranlib_default} -D"
3917 else
3918     ranlib_default="${cross_prefix}${ranlib_default}"
3919 fi
3920 strip_default="${cross_prefix}${strip_default}"
3921 windres_default="${cross_prefix}${windres_default}"
3922
3923 sysinclude_default="${sysroot}/usr/include"
3924
3925 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3926     target_exec target_os x86asmexe nvcc
3927 enabled cross_compile || host_cc_default=$cc
3928 set_default host_cc
3929
3930 pkg_config_fail_message=""
3931 if ! $pkg_config --version >/dev/null 2>&1; then
3932     warn "$pkg_config not found, library detection may fail."
3933     pkg_config=false
3934 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3935     pkg_config_fail_message="
3936 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3937 fi
3938
3939 if test $doxygen != $doxygen_default && \
3940   ! $doxygen --version >/dev/null 2>&1; then
3941     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3942 fi
3943
3944 exesuf() {
3945     case $1 in
3946         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3947     esac
3948 }
3949
3950 EXESUF=$(exesuf $target_os)
3951 HOSTEXESUF=$(exesuf $host_os)
3952
3953 # set temporary file name
3954 : ${TMPDIR:=$TEMPDIR}
3955 : ${TMPDIR:=$TMP}
3956 : ${TMPDIR:=/tmp}
3957
3958 if [ -n "$tempprefix" ] ; then
3959     mktemp(){
3960         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3961         echo "$tmpname"
3962         mkdir "$tmpname"
3963     }
3964 elif ! check_cmd mktemp -u XXXXXX; then
3965     # simple replacement for missing mktemp
3966     # NOT SAFE FOR GENERAL USE
3967     mktemp(){
3968         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3969         echo "$tmpname"
3970         mkdir "$tmpname"
3971     }
3972 fi
3973
3974 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3975     die "Unable to create temporary directory in $TMPDIR."
3976
3977 tmpfile(){
3978     tmp="${FFTMPDIR}/test"$2
3979     (set -C; exec > $tmp) 2> /dev/null ||
3980         die "Unable to create temporary file in $FFTMPDIR."
3981     eval $1=$tmp
3982 }
3983
3984 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3985 trap 'exit 2' INT
3986
3987 tmpfile TMPASM .asm
3988 tmpfile TMPC   .c
3989 tmpfile TMPCPP .cpp
3990 tmpfile TMPE   $EXESUF
3991 tmpfile TMPH   .h
3992 tmpfile TMPM   .m
3993 tmpfile TMPO   .o
3994 tmpfile TMPS   .S
3995 tmpfile TMPSH  .sh
3996 tmpfile TMPV   .ver
3997
3998 unset -f mktemp
3999
4000 chmod +x $TMPE
4001
4002 # make sure we can execute files in $TMPDIR
4003 cat > $TMPSH 2>> $logfile <<EOF
4004 #! /bin/sh
4005 EOF
4006 chmod +x $TMPSH >> $logfile 2>&1
4007 if ! $TMPSH >> $logfile 2>&1; then
4008     cat <<EOF
4009 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4010 variable to another directory and make sure that it is not mounted noexec.
4011 EOF
4012     die "Sanity test failed."
4013 fi
4014
4015 armasm_flags(){
4016     for flag; do
4017         case $flag in
4018             # Filter out MSVC cl.exe options from cflags that shouldn't
4019             # be passed to gas-preprocessor
4020             -M[TD]*)                                            ;;
4021             *)                  echo $flag                      ;;
4022         esac
4023    done
4024 }
4025
4026 cparser_flags(){
4027     for flag; do
4028         case $flag in
4029             -Wno-switch)             echo -Wno-switch-enum ;;
4030             -Wno-format-zero-length) ;;
4031             -Wdisabled-optimization) ;;
4032             -Wno-pointer-sign)       echo -Wno-other ;;
4033             *)                       echo $flag ;;
4034         esac
4035     done
4036 }
4037
4038 msvc_common_flags(){
4039     for flag; do
4040         case $flag in
4041             # In addition to specifying certain flags under the compiler
4042             # specific filters, they must be specified here as well or else the
4043             # generic catch all at the bottom will print the original flag.
4044             -Wall)                ;;
4045             -Wextra)              ;;
4046             -std=c99)             ;;
4047             # Common flags
4048             -fomit-frame-pointer) ;;
4049             -g)                   echo -Z7 ;;
4050             -fno-math-errno)      ;;
4051             -fno-common)          ;;
4052             -fno-signed-zeros)    ;;
4053             -fPIC)                ;;
4054             -mthumb)              ;;
4055             -march=*)             ;;
4056             -lz)                  echo zlib.lib ;;
4057             -lx264)               echo libx264.lib ;;
4058             -lstdc++)             ;;
4059             -l*)                  echo ${flag#-l}.lib ;;
4060             -LARGEADDRESSAWARE)   echo $flag ;;
4061             -L*)                  echo -libpath:${flag#-L} ;;
4062             *)                    echo $flag ;;
4063         esac
4064     done
4065 }
4066
4067 msvc_flags(){
4068     msvc_common_flags "$@"
4069     for flag; do
4070         case $flag in
4071             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4072                                        -wd4554 ;;
4073             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4074                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4075                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4076                                        -wd4307 \
4077                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4078         esac
4079     done
4080 }
4081
4082 icl_flags(){
4083     msvc_common_flags "$@"
4084     for flag; do
4085         case $flag in
4086             # Despite what Intel's documentation says -Wall, which is supported
4087             # on Windows, does enable remarks so disable them here.
4088             -Wall)                echo $flag -Qdiag-disable:remark ;;
4089             -std=c99)             echo -Qstd=c99 ;;
4090             -flto)                echo -ipo ;;
4091         esac
4092     done
4093 }
4094
4095 icc_flags(){
4096     for flag; do
4097         case $flag in
4098             -flto)                echo -ipo ;;
4099             *)                    echo $flag ;;
4100         esac
4101     done
4102 }
4103
4104 suncc_flags(){
4105     for flag; do
4106         case $flag in
4107             -march=*|-mcpu=*)
4108                 case "${flag#*=}" in
4109                     native)                   echo -xtarget=native       ;;
4110                     v9|niagara)               echo -xarch=sparc          ;;
4111                     ultrasparc)               echo -xarch=sparcvis       ;;
4112                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4113                     i586|pentium)             echo -xchip=pentium        ;;
4114                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4115                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4116                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4117                     pentium4*)          echo -xtarget=pentium4           ;;
4118                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4119                     *-sse3)             echo -xarch=sse3                 ;;
4120                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4121                     bonnell)                   echo -xarch=ssse3         ;;
4122                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4123                     westmere)                  echo -xtarget=westmere    ;;
4124                     silvermont)                echo -xarch=sse4_2        ;;
4125                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4126                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4127                                                echo -xarch=avx           ;;
4128                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4129                     btver1)                    echo -xarch=amdsse4a      ;;
4130                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4131                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4132                     k8|opteron|athlon64|athlon-fx)
4133                                                echo -xarch=sse2a         ;;
4134                     athlon*)                   echo -xarch=pentium_proa  ;;
4135                 esac
4136                 ;;
4137             -std=c99)             echo -xc99              ;;
4138             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4139             -fPIC)                echo -KPIC -xcode=pic32 ;;
4140             -W*,*)                echo $flag              ;;
4141             -f*-*|-W*|-mimpure-text)                      ;;
4142             -shared)              echo -G                 ;;
4143             *)                    echo $flag              ;;
4144         esac
4145     done
4146 }
4147
4148 probe_cc(){
4149     pfx=$1
4150     _cc=$2
4151     first=$3
4152
4153     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4154     unset _ld_o _ldflags _ld_lib _ld_path
4155     unset _depflags _DEPCMD _DEPFLAGS
4156     _flags_filter=echo
4157
4158     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4159         true # no-op to avoid reading stdin in following checks
4160     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4161         _type=llvm_gcc
4162         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4163         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4164         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4165         _cflags_speed='-O3'
4166         _cflags_size='-Os'
4167     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4168         _type=gcc
4169         gcc_version=$($_cc --version | head -n1)
4170         gcc_basever=$($_cc -dumpversion)
4171         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4172         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4173         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4174         case $gcc_basever in
4175             2) ;;
4176             2.*) ;;
4177             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4178         esac
4179         if [ "$first" = true ]; then
4180             case $gcc_basever in
4181                 4.2*)
4182                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4183             esac
4184         fi
4185         _cflags_speed='-O3'
4186         _cflags_size='-Os'
4187     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4188         _type=icc
4189         _ident=$($_cc --version | head -n1)
4190         _depflags='-MMD'
4191         _cflags_speed='-O3'
4192         _cflags_size='-Os'
4193         _cflags_noopt='-O1'
4194         _flags_filter=icc_flags
4195     elif $_cc -v 2>&1 | grep -q xlc; then
4196         _type=xlc
4197         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4198         _cflags_speed='-O5'
4199         _cflags_size='-O5 -qcompact'
4200     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4201         test -d "$sysroot" || die "No valid sysroot specified."
4202         _type=armcc
4203         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4204         armcc_conf="$PWD/armcc.conf"
4205         $_cc --arm_linux_configure                 \
4206              --arm_linux_config_file="$armcc_conf" \
4207              --configure_sysroot="$sysroot"        \
4208              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4209              die "Error creating armcc configuration file."
4210         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4211         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4212         as_default="${cross_prefix}gcc"
4213         _depflags='-MMD'
4214         _cflags_speed='-O3'
4215         _cflags_size='-Os'
4216     elif $_cc -v 2>&1 | grep -q clang; then
4217         _type=clang
4218         _ident=$($_cc --version 2>/dev/null | head -n1)
4219         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4220         _cflags_speed='-O3'
4221         _cflags_size='-Oz'
4222     elif $_cc -V 2>&1 | grep -q Sun; then
4223         _type=suncc
4224         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4225         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4226         _DEPFLAGS='-xM1 -xc99'
4227         _ldflags='-std=c99'
4228         _cflags_speed='-O5'
4229         _cflags_size='-O5 -xspace'
4230         _flags_filter=suncc_flags
4231     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4232         _type=pathscale
4233         _ident=$($_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'
4238     elif $_cc -v 2>&1 | grep -q Open64; then
4239         _type=open64
4240         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4241         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4242         _cflags_speed='-O2'
4243         _cflags_size='-Os'
4244         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4245     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4246         _type=armasm
4247         _ident=$($_cc | head -n1)
4248         # 4509: "This form of conditional instruction is deprecated"
4249         _flags="-nologo -ignore 4509"
4250         _flags_filter=armasm_flags
4251     elif $_cc 2>&1 | grep -q Intel; then
4252         _type=icl
4253         _ident=$($_cc 2>&1 | head -n1)
4254         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4255         # Not only is O3 broken on 13.x+ but it is slower on all previous
4256         # versions (tested) as well.
4257         _cflags_speed="-O2"
4258         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4259         if $_cc 2>&1 | grep -q Linker; then
4260             _ld_o='-out:$@'
4261         else
4262             _ld_o='-Fe$@'
4263         fi
4264         _cc_o='-Fo$@'
4265         _cc_e='-P'
4266         _flags_filter=icl_flags
4267         _ld_lib='lib%.a'
4268         _ld_path='-libpath:'
4269         # -Qdiag-error to make icl error when seeing certain unknown arguments
4270         _flags='-nologo -Qdiag-error:4044,10157'
4271         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4272         # with MSVC which enables it by default.
4273         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4274         disable stripping
4275     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4276         # lld can emulate multiple different linkers; in ms link.exe mode,
4277         # the -? parameter gives the help output which contains an identifyable
4278         # string, while it gives an error in other modes.
4279         _type=lld-link
4280         # The link.exe mode doesn't have a switch for getting the version,
4281         # but we can force it back to gnu mode and get the version from there.
4282         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4283         _ld_o='-out:$@'
4284         _flags_filter=msvc_flags
4285         _ld_lib='lib%.a'
4286         _ld_path='-libpath:'
4287     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4288         _type=msvc
4289         _ident=$($_cc 2>&1 | head -n1)
4290         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4291         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4292         _cflags_speed="-O2"
4293         _cflags_size="-O1"
4294         _cflags_noopt="-O1"
4295         if $_cc -nologo- 2>&1 | grep -q Linker; then
4296             _ld_o='-out:$@'
4297         else
4298             _ld_o='-Fe$@'
4299         fi
4300         _cc_o='-Fo$@'
4301         _cc_e='-P -Fi$@'
4302         _flags_filter=msvc_flags
4303         _ld_lib='lib%.a'
4304         _ld_path='-libpath:'
4305         _flags='-nologo'
4306         disable stripping
4307     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4308         _type=cparser
4309         _ident=$($_cc --version | head -n1)
4310         _depflags='-MMD'
4311         _cflags_speed='-O4'
4312         _cflags_size='-O2'
4313         _flags_filter=cparser_flags
4314     fi
4315
4316     eval ${pfx}_type=\$_type
4317     eval ${pfx}_ident=\$_ident
4318 }
4319
4320 set_ccvars(){
4321     eval ${1}_C=\${_cc_c-\${${1}_C}}
4322     eval ${1}_E=\${_cc_e-\${${1}_E}}
4323     eval ${1}_O=\${_cc_o-\${${1}_O}}
4324
4325     if [ -n "$_depflags" ]; then
4326         eval ${1}_DEPFLAGS=\$_depflags
4327     else
4328         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4329         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4330         eval DEP${1}FLAGS=\$_flags
4331     fi
4332 }
4333
4334 probe_cc cc "$cc" "true"
4335 cflags_filter=$_flags_filter
4336 cflags_speed=$_cflags_speed
4337 cflags_size=$_cflags_size
4338 cflags_noopt=$_cflags_noopt
4339 add_cflags $_flags $_cflags
4340 cc_ldflags=$_ldflags
4341 set_ccvars CC
4342 set_ccvars CXX
4343
4344 probe_cc hostcc "$host_cc"
4345 host_cflags_filter=$_flags_filter
4346 host_cflags_speed=$_cflags_speed
4347 add_host_cflags  $_flags $_cflags
4348 set_ccvars HOSTCC
4349
4350 test -n "$cc_type" && enable $cc_type ||
4351     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4352
4353 : ${as_default:=$cc}
4354 : ${objcc_default:=$cc}
4355 : ${dep_cc_default:=$cc}
4356 : ${ld_default:=$cc}
4357 : ${host_ld_default:=$host_cc}
4358 set_default ar as objcc dep_cc ld ln_s host_ld windres
4359
4360 probe_cc as "$as"
4361 asflags_filter=$_flags_filter
4362 add_asflags $_flags $_cflags
4363 set_ccvars AS
4364
4365 probe_cc objcc "$objcc"
4366 objcflags_filter=$_flags_filter
4367 add_objcflags $_flags $_cflags
4368 set_ccvars OBJC
4369
4370 probe_cc ld "$ld"
4371 ldflags_filter=$_flags_filter
4372 add_ldflags $_flags $_ldflags
4373 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4374 LD_O=${_ld_o-$LD_O}
4375 LD_LIB=${_ld_lib-$LD_LIB}
4376 LD_PATH=${_ld_path-$LD_PATH}
4377
4378 probe_cc hostld "$host_ld"
4379 host_ldflags_filter=$_flags_filter
4380 add_host_ldflags $_flags $_ldflags
4381 HOSTLD_O=${_ld_o-$HOSTLD_O}
4382
4383 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4384     probe_cc depcc "$dep_cc"
4385     CCDEP=${_DEPCMD:-$DEPCMD}
4386     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4387     DEPCCFLAGS=$_flags
4388 fi
4389
4390 if $ar 2>&1 | grep -q Microsoft; then
4391     arflags="-nologo"
4392     ar_o='-out:$@'
4393 elif $ar 2>&1 | grep -q "\[D\] "; then
4394     arflags="rcD"
4395     ar_o='$@'
4396 else
4397     arflags="rc"
4398     ar_o='$@'
4399 fi
4400
4401 add_cflags $extra_cflags
4402 add_cxxflags $extra_cxxflags
4403 add_objcflags $extra_objcflags
4404 add_asflags $extra_cflags
4405
4406 if test -n "$sysroot"; then
4407     case "$cc_type" in
4408         gcc|llvm_gcc|clang)
4409             add_cppflags --sysroot="$sysroot"
4410             add_ldflags --sysroot="$sysroot"
4411         ;;
4412     esac
4413 fi
4414
4415 if test "$cpu" = host; then
4416     enabled cross_compile &&
4417         die "--cpu=host makes no sense when cross-compiling."
4418
4419     case "$cc_type" in
4420         gcc|llvm_gcc)
4421             check_native(){
4422                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4423                 sed -n "/cc1.*$1=/{
4424                             s/.*$1=\\([^ ]*\\).*/\\1/
4425                             p
4426                             q
4427                         }" $TMPE
4428             }
4429             cpu=$(check_native -march || check_native -mcpu)
4430         ;;
4431         clang)
4432             check_native(){
4433                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4434                 sed -n "/cc1.*-target-cpu /{
4435                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4436                             p
4437                             q
4438                         }" $TMPE
4439             }
4440             cpu=$(check_native -march)
4441         ;;
4442     esac
4443
4444     test "${cpu:-host}" = host &&
4445         die "--cpu=host not supported with compiler $cc"
4446 fi
4447
4448 # Deal with common $arch aliases
4449 case "$arch" in
4450     aarch64|arm64)
4451         arch="aarch64"
4452     ;;
4453     arm*|iPad*|iPhone*)
4454         arch="arm"
4455     ;;
4456     mips*|IP*)
4457         case "$arch" in
4458         *el)
4459             add_cppflags -EL
4460             add_ldflags -EL
4461         ;;
4462         *eb)
4463             add_cppflags -EB
4464             add_ldflags -EB
4465         ;;
4466         esac
4467         arch="mips"
4468     ;;
4469     parisc*|hppa*)
4470         arch="parisc"
4471     ;;
4472     "Power Macintosh"|ppc*|powerpc*)
4473         arch="ppc"
4474     ;;
4475     s390|s390x)
4476         arch="s390"
4477     ;;
4478     sh4|sh)
4479         arch="sh4"
4480     ;;
4481     sun4*|sparc*)
4482         arch="sparc"
4483     ;;
4484     tilegx|tile-gx)
4485         arch="tilegx"
4486     ;;
4487     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4488         arch="x86"
4489     ;;
4490 esac
4491
4492 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4493 enable $arch
4494
4495 # Add processor-specific flags
4496 if enabled aarch64; then
4497
4498     case $cpu in
4499         armv*)
4500             cpuflags="-march=$cpu"
4501         ;;
4502         *)
4503             cpuflags="-mcpu=$cpu"
4504         ;;
4505     esac
4506
4507 elif enabled alpha; then
4508
4509     cpuflags="-mcpu=$cpu"
4510
4511 elif enabled arm; then
4512
4513     check_arm_arch() {
4514         check_cpp_condition stddef.h \
4515             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4516             $cpuflags
4517     }
4518
4519     probe_arm_arch() {
4520         if   check_arm_arch 4;        then echo armv4
4521         elif check_arm_arch 4T;       then echo armv4t
4522         elif check_arm_arch 5;        then echo armv5
4523         elif check_arm_arch 5E;       then echo armv5e
4524         elif check_arm_arch 5T;       then echo armv5t
4525         elif check_arm_arch 5TE;      then echo armv5te
4526         elif check_arm_arch 5TEJ;     then echo armv5te
4527         elif check_arm_arch 6;        then echo armv6
4528         elif check_arm_arch 6J;       then echo armv6j
4529         elif check_arm_arch 6K;       then echo armv6k
4530         elif check_arm_arch 6Z;       then echo armv6z
4531         elif check_arm_arch 6ZK;      then echo armv6zk
4532         elif check_arm_arch 6T2;      then echo armv6t2
4533         elif check_arm_arch 7;        then echo armv7
4534         elif check_arm_arch 7A  7_A;  then echo armv7-a
4535         elif check_arm_arch 7S;       then echo armv7-a
4536         elif check_arm_arch 7R  7_R;  then echo armv7-r
4537         elif check_arm_arch 7M  7_M;  then echo armv7-m
4538         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4539         elif check_arm_arch 8A  8_A;  then echo armv8-a
4540         fi
4541     }
4542
4543     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4544
4545     case $cpu in
4546         armv*)
4547             cpuflags="-march=$cpu"
4548             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4549         ;;
4550         *)
4551             cpuflags="-mcpu=$cpu"
4552             case $cpu in
4553                 cortex-a*)                               subarch=armv7a  ;;
4554                 cortex-r*)                               subarch=armv7r  ;;
4555                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4556                 arm11*)                                  subarch=armv6   ;;
4557                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4558                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4559                 *)                             subarch=$(probe_arm_arch) ;;
4560             esac
4561         ;;
4562     esac
4563
4564     case "$subarch" in
4565         armv5t*)    enable fast_clz                ;;
4566         armv[6-8]*)
4567             enable fast_clz
4568             disabled fast_unaligned || enable fast_unaligned
4569             ;;
4570     esac
4571
4572 elif enabled avr32; then
4573
4574     case $cpu in
4575         ap7[02]0[0-2])
4576             subarch="avr32_ap"
4577             cpuflags="-mpart=$cpu"
4578         ;;
4579         ap)
4580             subarch="avr32_ap"
4581             cpuflags="-march=$cpu"
4582         ;;
4583         uc3[ab]*)
4584             subarch="avr32_uc"
4585             cpuflags="-mcpu=$cpu"
4586         ;;
4587         uc)
4588             subarch="avr32_uc"
4589             cpuflags="-march=$cpu"
4590         ;;
4591     esac
4592
4593 elif enabled bfin; then
4594
4595     cpuflags="-mcpu=$cpu"
4596
4597 elif enabled mips; then
4598
4599     cpuflags="-march=$cpu"
4600
4601     if [ "$cpu" != "generic" ]; then
4602         disable mips32r2
4603         disable mips32r5
4604         disable mips64r2
4605         disable mips32r6
4606         disable mips64r6
4607         disable loongson2
4608         disable loongson3
4609
4610         case $cpu in
4611             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4612                 enable mips32r2
4613                 disable msa
4614             ;;
4615             p5600|i6400|p6600)
4616                 disable mipsdsp
4617                 disable mipsdspr2
4618             ;;
4619             loongson*)
4620                 enable loongson2
4621                 enable loongson3
4622                 enable local_aligned
4623                 enable simd_align_16
4624                 enable fast_64bit
4625                 enable fast_clz
4626                 enable fast_cmov
4627                 enable fast_unaligned
4628                 disable aligned_stack
4629                 disable mipsfpu
4630                 disable mipsdsp
4631                 disable mipsdspr2
4632                 case $cpu in
4633                     loongson3*)
4634                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4635                     ;;
4636                     loongson2e)
4637                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4638                     ;;
4639                     loongson2f)
4640                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4641                     ;;
4642                 esac
4643             ;;
4644             *)
4645                 # Unknown CPU. Disable everything.
4646                 warn "unknown CPU. Disabling all MIPS optimizations."
4647                 disable mipsfpu
4648                 disable mipsdsp
4649                 disable mipsdspr2
4650                 disable msa
4651                 disable mmi
4652             ;;
4653         esac
4654
4655         case $cpu in
4656             24kc)
4657                 disable mipsfpu
4658                 disable mipsdsp
4659                 disable mipsdspr2
4660             ;;
4661             24kf*)
4662                 disable mipsdsp
4663                 disable mipsdspr2
4664             ;;
4665             24kec|34kc|1004kc)
4666                 disable mipsfpu
4667                 disable mipsdspr2
4668             ;;
4669             24kef*|34kf*|1004kf*)
4670                 disable mipsdspr2
4671             ;;
4672             74kc)
4673                 disable mipsfpu
4674             ;;
4675             p5600)
4676                 enable mips32r5
4677                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4678             ;;
4679             i6400)
4680                 enable mips64r6
4681                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4682             ;;
4683             p6600)
4684                 enable mips64r6
4685                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4686             ;;
4687         esac
4688     else
4689         # We do not disable anything. Is up to the user to disable the unwanted features.
4690         warn 'generic cpu selected'
4691     fi
4692
4693 elif enabled ppc; then
4694
4695     disable ldbrx
4696
4697     case $(tolower $cpu) in
4698         601|ppc601|powerpc601)
4699             cpuflags="-mcpu=601"
4700             disable altivec
4701         ;;
4702         603*|ppc603*|powerpc603*)
4703             cpuflags="-mcpu=603"
4704             disable altivec
4705         ;;
4706         604*|ppc604*|powerpc604*)
4707             cpuflags="-mcpu=604"
4708             disable altivec
4709         ;;
4710         g3|75*|ppc75*|powerpc75*)
4711             cpuflags="-mcpu=750"
4712             disable altivec
4713         ;;
4714         g4|745*|ppc745*|powerpc745*)
4715             cpuflags="-mcpu=7450"
4716             disable vsx
4717         ;;
4718         74*|ppc74*|powerpc74*)
4719             cpuflags="-mcpu=7400"
4720             disable vsx
4721         ;;
4722         g5|970|ppc970|powerpc970)
4723             cpuflags="-mcpu=970"
4724             disable vsx
4725         ;;
4726         power[3-6]*)
4727             cpuflags="-mcpu=$cpu"
4728             disable vsx
4729         ;;
4730         power[7-8]*)
4731             cpuflags="-mcpu=$cpu"
4732         ;;
4733         cell)
4734             cpuflags="-mcpu=cell"
4735             enable ldbrx
4736             disable vsx
4737         ;;
4738         e500mc)
4739             cpuflags="-mcpu=e500mc"
4740             disable altivec
4741         ;;
4742         e500v2)
4743             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4744             disable altivec
4745             disable dcbzl
4746         ;;
4747         e500)
4748             cpuflags="-mcpu=8540 -mhard-float"
4749             disable altivec
4750             disable dcbzl
4751         ;;
4752     esac
4753
4754 elif enabled sparc; then
4755
4756     case $cpu in
4757         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4758             cpuflags="-mcpu=$cpu"
4759         ;;
4760         ultrasparc*|niagara[234])
4761             cpuflags="-mcpu=$cpu"
4762         ;;
4763     esac
4764
4765 elif enabled x86; then
4766
4767     case $cpu in
4768         i[345]86|pentium)
4769             cpuflags="-march=$cpu"
4770             disable i686
4771             disable mmx
4772         ;;
4773         # targets that do NOT support nopl and conditional mov (cmov)
4774         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4775             cpuflags="-march=$cpu"
4776             disable i686
4777         ;;
4778         # targets that do support nopl and conditional mov (cmov)
4779         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4780         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4781         |amdfam10|barcelona|b[dt]ver*|znver*)
4782             cpuflags="-march=$cpu"
4783             enable i686
4784             enable fast_cmov
4785         ;;
4786         # targets that do support conditional mov but on which it's slow
4787         pentium4|pentium4m|prescott|nocona)
4788             cpuflags="-march=$cpu"
4789             enable i686
4790             disable fast_cmov
4791         ;;
4792     esac
4793
4794 fi
4795
4796 if [ "$cpu" != generic ]; then
4797     add_cflags  $cpuflags
4798     add_asflags $cpuflags
4799     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4800 fi
4801
4802 # compiler sanity check
4803 check_exec <<EOF
4804 int main(void){ return 0; }
4805 EOF
4806 if test "$?" != 0; then
4807     echo "$cc is unable to create an executable file."
4808     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4809         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4810         echo "Only do this if you know what cross compiling means."
4811     fi
4812     die "C compiler test failed."
4813 fi
4814
4815 add_cppflags -D_ISOC99_SOURCE
4816 add_cxxflags -D__STDC_CONSTANT_MACROS
4817 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4818
4819 # some compilers silently accept -std=c11, so we also need to check that the
4820 # version macro is defined properly
4821 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4822     add_cflags -std=c11 ||
4823     check_cflags -std=c99
4824
4825 check_cppflags -D_FILE_OFFSET_BITS=64
4826 check_cppflags -D_LARGEFILE_SOURCE
4827
4828 add_host_cppflags -D_ISOC99_SOURCE
4829 check_host_cflags -std=c99
4830 check_host_cflags -Wall
4831 check_host_cflags $host_cflags_speed
4832
4833 check_64bit(){
4834     arch32=$1
4835     arch64=$2
4836     expr=$3
4837     check_code cc "" "int test[2*($expr) - 1]" &&
4838         subarch=$arch64 || subarch=$arch32
4839     enable $subarch
4840 }
4841
4842 case "$arch" in
4843     aarch64|alpha|ia64)
4844         enabled shared && enable_weak pic
4845     ;;
4846     mips)
4847         check_64bit mips mips64 '_MIPS_SIM > 1'
4848         enabled shared && enable_weak pic
4849     ;;
4850     parisc)
4851         check_64bit parisc parisc64 'sizeof(void *) > 4'
4852         enabled shared && enable_weak pic
4853     ;;
4854     ppc)
4855         check_64bit ppc ppc64 'sizeof(void *) > 4'
4856         enabled shared && enable_weak pic
4857     ;;
4858     s390)
4859         check_64bit s390 s390x 'sizeof(void *) > 4'
4860         enabled shared && enable_weak pic
4861     ;;
4862     sparc)
4863         check_64bit sparc sparc64 'sizeof(void *) > 4'
4864         enabled shared && enable_weak pic
4865     ;;
4866     x86)
4867         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4868         # Treat x32 as x64 for now. Note it also needs pic if shared
4869         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4870             subarch=x86_64 && enable x86_64 && disable x86_32
4871         if enabled x86_64; then
4872             enabled shared && enable_weak pic
4873             objformat=elf64
4874         fi
4875     ;;
4876 esac
4877
4878 # OS specific
4879 case $target_os in
4880     aix)
4881         SHFLAGS=-shared
4882         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4883         enabled shared && add_ldflags -Wl,-brtl
4884         arflags='-Xany -r -c'
4885         ;;
4886     android)
4887         disable symver
4888         enable section_data_rel_ro
4889         SLIB_INSTALL_NAME='$(SLIBNAME)'
4890         SLIB_INSTALL_LINKS=
4891         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4892         ;;
4893     haiku)
4894         prefix_default="/boot/common"
4895         network_extralibs="-lnetwork"
4896         host_extralibs=
4897         ;;
4898     sunos)
4899         SHFLAGS='-shared -Wl,-h,$$(@F)'
4900         enabled x86 && append SHFLAGS -mimpure-text
4901         network_extralibs="-lsocket -lnsl"
4902         add_cppflags -D__EXTENSIONS__
4903         # When using suncc to build, the Solaris linker will mark
4904         # an executable with each instruction set encountered by
4905         # the Solaris assembler.  As our libraries contain their own
4906         # guards for processor-specific code, instead suppress
4907         # generation of the HWCAPS ELF section on Solaris x86 only.
4908         enabled_all suncc x86 &&
4909             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4910             add_ldflags -Wl,-M,mapfile
4911         nm_default='nm -P -g'
4912         version_script='-M'
4913         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4914         ;;
4915     netbsd)
4916         disable symver
4917         oss_indev_extralibs="-lossaudio"
4918         oss_outdev_extralibs="-lossaudio"
4919         enabled gcc || check_ldflags -Wl,-zmuldefs
4920         ;;
4921     openbsd|bitrig)
4922         disable symver
4923         SHFLAGS='-shared'
4924         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4925         SLIB_INSTALL_LINKS=
4926         oss_indev_extralibs="-lossaudio"
4927         oss_outdev_extralibs="-lossaudio"
4928         ;;
4929     dragonfly)
4930         disable symver
4931         ;;
4932     freebsd)
4933         ;;
4934     bsd/os)
4935         add_extralibs -lpoll -lgnugetopt
4936         strip="strip -d"
4937         ;;
4938     darwin)
4939         enabled ppc && add_asflags -force_cpusubtype_ALL
4940         install_name_dir_default='$(SHLIBDIR)'
4941         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4942         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4943         strip="${strip} -x"
4944         add_ldflags -Wl,-dynamic,-search_paths_first
4945         check_cflags -Werror=partial-availability
4946         SLIBSUF=".dylib"
4947         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4948         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4949         enabled x86_64 && objformat="macho64" || objformat="macho32"
4950         enabled_any pic shared x86_64 ||
4951             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4952         check_header dispatch/dispatch.h &&
4953             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4954         if test -n "$sysroot"; then
4955             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4956             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4957         fi
4958         version_script='-exported_symbols_list'
4959         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4960         ;;
4961     msys*)
4962         die "Native MSYS builds are discouraged, please use the MINGW environment."
4963         ;;
4964     mingw32*|mingw64*)
4965         target_os=mingw32
4966         if enabled shared; then
4967             # Cannot build both shared and static libs when using dllimport.
4968             disable static
4969         fi
4970         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4971         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4972         shlibdir_default="$bindir_default"
4973         SLIBPREF=""
4974         SLIBSUF=".dll"
4975         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4976         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4977         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4978         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4979         SLIB_INSTALL_LINKS=
4980         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4981         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4982         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4983         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4984         enabled x86_64 && objformat="win64" || objformat="win32"
4985         ranlib=:
4986         enable dos_paths
4987         check_ldflags -Wl,--nxcompat,--dynamicbase
4988         # Lets work around some stupidity in binutils.
4989         # ld will strip relocations from executables even though we need them
4990         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4991         # however ld then forgets what the entry point should be (oops) so we
4992         # have to manually (re)set it.
4993         if enabled x86_32; then
4994             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4995         elif enabled x86_64; then
4996             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4997             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4998             # Set image base >4GB for extra entropy with HEASLR
4999             add_ldexeflags -Wl,--image-base,0x140000000
5000             append SHFLAGS -Wl,--image-base,0x180000000
5001         fi
5002         ;;
5003     win32|win64)
5004         disable symver
5005         if enabled shared; then
5006             # Link to the import library instead of the normal static library
5007             # for shared libs.
5008             LD_LIB='%.lib'
5009             # Cannot build both shared and static libs with MSVC or icl.
5010             disable static
5011         fi
5012         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5013         shlibdir_default="$bindir_default"
5014         SLIBPREF=""
5015         SLIBSUF=".dll"
5016         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5017         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5018         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5019         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5020         SLIB_INSTALL_LINKS=
5021         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5022         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5023         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5024         enabled x86_64 && objformat="win64" || objformat="win32"
5025         ranlib=:
5026         enable dos_paths
5027         ;;
5028     cygwin*)
5029         target_os=cygwin
5030         shlibdir_default="$bindir_default"
5031         SLIBPREF="cyg"
5032         SLIBSUF=".dll"
5033         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5034         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5035         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5036         SLIB_INSTALL_LINKS=
5037         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5038         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5039         enabled x86_64 && objformat="win64" || objformat="win32"
5040         enable dos_paths
5041         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5042         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5043         ;;
5044     *-dos|freedos|opendos)
5045         network_extralibs="-lsocket"
5046         objformat="coff"
5047         enable dos_paths
5048         add_cppflags -U__STRICT_ANSI__
5049         ;;
5050     linux)
5051         enable section_data_rel_ro
5052         enabled_any arm aarch64 && enable_weak linux_perf
5053         ;;
5054     irix*)
5055         target_os=irix
5056         ranlib="echo ignoring ranlib"
5057         ;;
5058     os/2*)
5059         strip="lxlite -CS"
5060         striptype=""
5061         objformat="aout"
5062         add_cppflags -D_GNU_SOURCE
5063         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5064         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5065         LIBSUF="_s.a"
5066         SLIBPREF=""
5067         SLIBSUF=".dll"
5068         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5069         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5070         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5071             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5072             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5073             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5074             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5075         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5076             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5077         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5078         SLIB_INSTALL_LINKS=
5079         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5080         enable dos_paths
5081         enable_weak os2threads
5082         ;;
5083     gnu/kfreebsd)
5084         add_cppflags -D_BSD_SOURCE
5085         ;;
5086     gnu)
5087         ;;
5088     qnx)
5089         add_cppflags -D_QNX_SOURCE
5090         network_extralibs="-lsocket"
5091         ;;
5092     symbian)
5093         SLIBSUF=".dll"
5094         enable dos_paths
5095         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5096         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5097         add_ldflags -Wl,--target1-abs,--no-undefined \
5098                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5099                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5100         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5101                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5102                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5103         ;;
5104     minix)
5105         ;;
5106     none)
5107         ;;
5108     *)
5109         die "Unknown OS '$target_os'."
5110         ;;
5111 esac
5112
5113 # test if creating links works
5114 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5115 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5116 mkdir "$link_dest"
5117 $ln_s "$link_dest" "$link_name"
5118 touch "$link_dest/test_file"
5119 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5120     # create link to source path
5121     [ -e src ] && rm src
5122     $ln_s "$source_path" src
5123     source_link=src
5124 else
5125     # creating directory links doesn't work
5126     # fall back to using the full source path
5127     source_link="$source_path"
5128 fi
5129 # cleanup
5130 rm -r "$link_dest"
5131 rm -r "$link_name"
5132
5133 # determine libc flavour
5134
5135 probe_libc(){
5136     pfx=$1
5137     pfx_no_=${pfx%_}
5138     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5139     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5140         eval ${pfx}libc_type=uclibc
5141         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5142     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5143         eval ${pfx}libc_type=glibc
5144         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5145     # MinGW headers can be installed on Cygwin, so check for newlib first.
5146     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5147         eval ${pfx}libc_type=newlib
5148         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5149     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5150     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5151         eval ${pfx}libc_type=mingw64
5152         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5153             add_compat msvcrt/snprintf.o
5154             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5155         fi
5156         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5157         eval test \$${pfx_no_}cc_type = "gcc" &&
5158             add_${pfx}cppflags -D__printf__=__gnu_printf__
5159     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5160          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5161         eval ${pfx}libc_type=mingw32
5162         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5163             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5164             die "ERROR: MinGW32 runtime version must be >= 3.15."
5165         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5166         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5167             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5168         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5169             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5170         eval test \$${pfx_no_}cc_type = "gcc" &&
5171             add_${pfx}cppflags -D__printf__=__gnu_printf__
5172     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5173         eval ${pfx}libc_type=msvcrt
5174         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5175             if [ "$pfx" = host_ ]; then
5176                 add_host_cppflags -Dsnprintf=_snprintf
5177             else
5178                 add_compat strtod.o strtod=avpriv_strtod
5179                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5180                                              _snprintf=avpriv_snprintf  \
5181                                              vsnprintf=avpriv_vsnprintf
5182             fi
5183         fi
5184         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5185         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5186         # 0x601 by default unless something else is set by the user.
5187         # This can easily lead to us detecting functions only present
5188         # in such new versions and producing binaries requiring windows 7.0.
5189         # Therefore explicitly set the default to XP unless the user has
5190         # set something else on the command line.
5191         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5192         # family. For these cases, configure is free to use any functions
5193         # found in the SDK headers by default. (Alternatively, we could force
5194         # _WIN32_WINNT to 0x0602 in that case.)
5195         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5196             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5197 #ifdef WINAPI_FAMILY
5198 #include <winapifamily.h>
5199 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5200 #error not desktop
5201 #endif
5202 #endif
5203 EOF
5204         if [ "$pfx" = "" ]; then
5205             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5206             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5207         fi
5208     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5209         eval ${pfx}libc_type=klibc
5210     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5211         eval ${pfx}libc_type=bionic
5212     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5213         eval ${pfx}libc_type=solaris
5214         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5215     fi
5216     check_${pfx}cc <<EOF
5217 #include <time.h>
5218 void *v = localtime_r;
5219 EOF
5220 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5221 #include <time.h>
5222 void *v = localtime_r;
5223 EOF
5224
5225     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5226 }
5227
5228 probe_libc
5229 probe_libc host_
5230
5231 # hacks for compiler/libc/os combinations
5232
5233 case $libc_type in
5234     bionic)
5235         add_compat strtod.o strtod=avpriv_strtod
5236         ;;
5237 esac
5238
5239 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5240     add_cppflags '-I\$(SRC_PATH)/compat/float'
5241
5242 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5243
5244 set_default libdir
5245 : ${shlibdir_default:="$libdir"}
5246 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5247
5248 set_default $PATHS_LIST
5249 set_default nm
5250
5251 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5252
5253 enable_weak_pic() {
5254     disabled pic && return
5255     enable pic
5256     add_cppflags -DPIC
5257     case "$target_os" in
5258     mingw*|cygwin*|win*)
5259         ;;
5260     *)
5261         add_cflags -fPIC
5262         add_asflags -fPIC
5263         ;;
5264     esac
5265 }
5266
5267 enabled pic && enable_weak_pic
5268
5269 check_cc <<EOF || die "Symbol mangling check failed."
5270 int ff_extern;
5271 EOF
5272 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5273 extern_prefix=${sym%%ff_extern*}
5274
5275 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5276
5277 _restrict=
5278 for restrict_keyword in restrict __restrict__ __restrict; do
5279     check_cc <<EOF && _restrict=$restrict_keyword && break
5280 void foo(char * $restrict_keyword p);
5281 EOF
5282 done
5283
5284 check_cc <<EOF && enable pragma_deprecated
5285 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5286 EOF
5287
5288 check_cc <<EOF || die "endian test failed"
5289 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5290 EOF
5291 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5292
5293 check_cc <<EOF && enable const_nan
5294 #include <math.h>
5295 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5296 EOF
5297
5298 if ! enabled ppc64 || enabled bigendian; then
5299     disable vsx
5300 fi
5301
5302 check_gas() {
5303     log "check_gas using '$as' as AS"
5304     # :vararg is used on aarch64, arm and ppc altivec
5305     check_as <<EOF || return 1
5306 .macro m n, y:vararg=0
5307 \n: .int \y
5308 .endm
5309 m x
5310 EOF
5311     # .altmacro is only used in arm asm
5312     ! enabled arm || check_as <<EOF || return 1
5313 .altmacro
5314 EOF
5315     enable gnu_as
5316     return 0
5317 }
5318
5319 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5320     nogas=:
5321     enabled_any arm aarch64 && nogas=die
5322     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5323     as_noop=-v
5324
5325     case $as_type in
5326         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5327         gcc)  gaspp_as_type=gas ;;
5328         *)    gaspp_as_type=$as_type ;;
5329     esac
5330
5331     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5332
5333     test "${as#*gas-preprocessor.pl}" != "$as" ||
5334     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5335         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5336
5337     if ! check_gas ; then
5338         as=${gas:=$as}
5339         check_gas || \
5340             $nogas "GNU assembler not found, install/update gas-preprocessor"
5341     fi
5342
5343     check_as <<EOF && enable as_func
5344 .func test
5345 .endfunc
5346 EOF
5347 fi
5348
5349 check_inline_asm inline_asm_labels '"1:\n"'
5350
5351 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5352
5353 if enabled aarch64; then
5354     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5355     # internal assembler in clang 3.3 does not support this instruction
5356     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5357     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5358
5359     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5360
5361 elif enabled alpha; then
5362
5363     check_cflags -mieee
5364
5365 elif enabled arm; then
5366
5367     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5368
5369     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5370 float func(float a, float b){ return a+b; }
5371 EOF
5372
5373     enabled thumb && check_cflags -mthumb || check_cflags -marm
5374
5375     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5376         enable vfp_args
5377     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5378         enable vfp_args
5379     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5380         case "${cross_prefix:-$cc}" in
5381             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5382             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5383 __asm__ (".eabi_attribute 28, 1");
5384 int main(void) { return 0; }
5385 EOF
5386         esac
5387         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5388     fi
5389
5390     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5391     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5392     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5393     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5394     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5395     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5396     enabled setend  && check_insn setend  'setend be'
5397
5398     [ $target_os = linux ] || [ $target_os = android ] ||
5399         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5400             $ARCH_EXT_LIST_ARM
5401
5402     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5403
5404     check_as <<EOF && enable as_arch_directive
5405 .arch armv7-a
5406 EOF
5407     check_as <<EOF && enable as_fpu_directive
5408 .fpu neon
5409 EOF
5410
5411     # llvm's integrated assembler supports .object_arch from llvm 3.5
5412     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5413         check_as <<EOF && enable as_object_arch
5414 .object_arch armv4
5415 EOF
5416
5417     # MS armasm fails to assemble our PIC constructs
5418     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5419
5420 elif enabled mips; then
5421
5422     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5423     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5424     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5425
5426     # Enable minimum ISA based on selected options
5427     if enabled mips64; then
5428         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5429         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5430         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5431     else
5432         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5433         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5434         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5435         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5436     fi
5437
5438     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5439     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5440     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5441     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5442     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5443
5444     if enabled bigendian && enabled msa; then
5445         disable msa
5446     fi
5447
5448 elif enabled parisc; then
5449
5450     if enabled gcc; then
5451         case $($cc -dumpversion) in
5452             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5453         esac
5454     fi
5455
5456 elif enabled ppc; then
5457
5458     enable local_aligned
5459
5460     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5461     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5462     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5463     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5464
5465     if enabled altivec; then
5466         check_cflags -maltivec -mabi=altivec
5467
5468         # check if our compiler supports Motorola AltiVec C API
5469         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5470                                  vector signed int v2 = (vector signed int) { 1 };
5471                                  v1 = vec_add(v1, v2);" ||
5472             disable altivec
5473
5474         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5475     fi
5476
5477     if enabled vsx; then
5478         check_cflags -mvsx &&
5479         check_code cc altivec.h "int v[4] = { 0 };
5480                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5481             disable vsx
5482     fi
5483
5484     if enabled power8; then
5485         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5486     fi
5487
5488 elif enabled x86; then
5489
5490     check_builtin rdtsc    intrin.h   "__rdtsc()"
5491     check_builtin mm_empty mmintrin.h "_mm_empty()"
5492
5493     enable local_aligned
5494
5495     # check whether EBP is available on x86
5496     # As 'i' is stored on the stack, this program will crash
5497     # if the base pointer is used to access it because the
5498     # base pointer is cleared in the inline assembly code.
5499     check_exec_crash <<EOF && enable ebp_available
5500 volatile int i=0;
5501 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5502 return i;
5503 EOF
5504
5505     # check whether EBX is available on x86
5506     check_inline_asm ebx_available '""::"b"(0)' &&
5507         check_inline_asm ebx_available '"":::"%ebx"'
5508
5509     # check whether xmm clobbers are supported
5510     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5511
5512     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5513         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5514
5515     # check whether binutils is new enough to compile SSSE3/MMXEXT
5516     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5517     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5518
5519     probe_x86asm(){
5520         x86asmexe_probe=$1
5521         if check_cmd $x86asmexe_probe -v; then
5522             x86asmexe=$x86asmexe_probe
5523             x86asm_type=nasm
5524             x86asm_debug="-g -F dwarf"
5525             X86ASMDEP=
5526             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5527         elif check_cmd $x86asmexe_probe --version; then
5528             x86asmexe=$x86asmexe_probe
5529             x86asm_type=yasm
5530             x86asm_debug="-g dwarf2"
5531             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5532             X86ASM_DEPFLAGS=
5533         fi
5534         check_x86asm "movbe ecx, [5]" && enable x86asm
5535     }
5536
5537     if ! disabled_any asm mmx x86asm; then
5538         disable x86asm
5539         for program in $x86asmexe nasm yasm; do
5540             probe_x86asm $program && break
5541         done
5542         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5543         X86ASMFLAGS="-f $objformat"
5544         enabled pic               && append X86ASMFLAGS "-DPIC"
5545         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5546         case "$objformat" in
5547             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5548         esac
5549
5550         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5551         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5552         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5553         check_x86asm "CPU amdnop" || disable cpunop
5554     fi
5555
5556     case "$cpu" in
5557         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5558             disable fast_clz
5559         ;;
5560     esac
5561
5562 fi
5563
5564 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5565
5566 check_ldflags -Wl,--as-needed
5567 check_ldflags -Wl,-z,noexecstack
5568
5569 if ! disabled network; then
5570     check_func getaddrinfo $network_extralibs
5571     check_func inet_aton $network_extralibs
5572
5573     check_type netdb.h "struct addrinfo"
5574     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5575     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5576     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5577     check_type poll.h "struct pollfd"
5578     check_type netinet/sctp.h "struct sctp_event_subscribe"
5579     check_struct "sys/socket.h" "struct msghdr" msg_flags
5580     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5581     check_type netinet/in.h "struct sockaddr_in6"
5582     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5583     check_type "sys/types.h sys/socket.h" socklen_t
5584
5585     # Prefer arpa/inet.h over winsock2
5586     if check_header arpa/inet.h ; then
5587         check_func closesocket
5588     elif check_header winsock2.h ; then
5589         check_func_headers winsock2.h closesocket -lws2 &&
5590             network_extralibs="-lws2" ||
5591         { check_func_headers winsock2.h closesocket -lws2_32 &&
5592             network_extralibs="-lws2_32"; } || disable winsock2_h network
5593         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5594
5595         check_type ws2tcpip.h socklen_t
5596         check_type ws2tcpip.h "struct addrinfo"
5597         check_type ws2tcpip.h "struct group_source_req"
5598         check_type ws2tcpip.h "struct ip_mreq_source"
5599         check_type ws2tcpip.h "struct ipv6_mreq"
5600         check_type winsock2.h "struct pollfd"
5601         check_struct winsock2.h "struct sockaddr" sa_len
5602         check_type ws2tcpip.h "struct sockaddr_in6"
5603         check_type ws2tcpip.h "struct sockaddr_storage"
5604     else
5605         disable network
5606     fi
5607 fi
5608
5609 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5610 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5611 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5612 check_builtin sarestart signal.h "SA_RESTART"
5613 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5614 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5615 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5616 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5617
5618 case "$custom_allocator" in
5619     jemalloc)
5620         # jemalloc by default does not use a prefix
5621         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5622     ;;
5623     tcmalloc)
5624         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5625         malloc_prefix=tc_
5626     ;;
5627 esac
5628
5629 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5630 check_func  ${malloc_prefix}memalign            && enable memalign
5631 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5632
5633 check_func  access
5634 check_func_headers stdlib.h arc4random
5635 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5636 check_func  fcntl
5637 check_func  fork
5638 check_func  gethrtime
5639 check_func  getopt
5640 check_func  getrusage
5641 check_func  gettimeofday
5642 check_func  isatty
5643 check_func  mkstemp
5644 check_func  mmap
5645 check_func  mprotect
5646 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5647 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5648 check_func  sched_getaffinity
5649 check_func  setrlimit
5650 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5651 check_func  strerror_r
5652 check_func  sysconf
5653 check_func  sysctl
5654 check_func  usleep
5655
5656 check_func_headers conio.h kbhit
5657 check_func_headers io.h setmode
5658 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5659 check_func_headers mach/mach_time.h mach_absolute_time
5660 check_func_headers stdlib.h getenv
5661 check_func_headers sys/stat.h lstat
5662
5663 check_func_headers windows.h GetProcessAffinityMask
5664 check_func_headers windows.h GetProcessTimes
5665 check_func_headers windows.h GetSystemTimeAsFileTime
5666 check_func_headers windows.h LoadLibrary
5667 check_func_headers windows.h MapViewOfFile
5668 check_func_headers windows.h PeekNamedPipe
5669 check_func_headers windows.h SetConsoleTextAttribute
5670 check_func_headers windows.h SetConsoleCtrlHandler
5671 check_func_headers windows.h Sleep
5672 check_func_headers windows.h VirtualAlloc
5673 check_struct windows.h "CONDITION_VARIABLE" Ptr
5674 check_func_headers glob.h glob
5675 enabled xlib &&
5676     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5677
5678 check_header direct.h
5679 check_header dirent.h
5680 check_header dxgidebug.h
5681 check_header dxva.h
5682 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5683 check_header io.h
5684 check_header libcrystalhd/libcrystalhd_if.h
5685 check_header malloc.h
5686 check_header net/udplite.h
5687 check_header poll.h
5688 check_header sys/param.h
5689 check_header sys/resource.h
5690 check_header sys/select.h
5691 check_header sys/time.h
5692 check_header sys/un.h
5693 check_header termios.h
5694 check_header unistd.h
5695 check_header valgrind/valgrind.h
5696 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5697 check_header windows.h
5698 check_header X11/extensions/XvMClib.h
5699 check_header asm/types.h
5700
5701 # it seems there are versions of clang in some distros that try to use the
5702 # gcc headers, which explodes for stdatomic
5703 # so we also check that atomics actually work here
5704 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5705
5706 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5707 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5708 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5709 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5710 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5711
5712 enabled appkit       && check_apple_framework AppKit
5713 enabled audiotoolbox && check_apple_framework AudioToolbox
5714 enabled avfoundation && check_apple_framework AVFoundation
5715 enabled coreimage    && check_apple_framework CoreImage
5716 enabled videotoolbox && check_apple_framework VideoToolbox
5717
5718 check_apple_framework CoreFoundation
5719 check_apple_framework CoreMedia
5720 check_apple_framework CoreVideo
5721
5722 enabled avfoundation && {
5723     disable coregraphics applicationservices
5724     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5725     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5726
5727 enabled videotoolbox && {
5728     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5729     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5730 }
5731
5732 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5733
5734 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5735 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5736 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5737 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5738 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5739
5740 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5741 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5742 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5743 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5744 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5745 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5746 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5747 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5748 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5749
5750 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5751
5752 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5753
5754 if ! disabled w32threads && ! enabled pthreads; then
5755     check_func_headers "windows.h process.h" _beginthreadex &&
5756         enable w32threads || disable w32threads
5757     if ! enabled w32threads && enabled winrt; then
5758         check_func_headers "windows.h" CreateThread &&
5759             enable w32threads || disable w32threads
5760     fi
5761 fi
5762
5763 # check for some common methods of building with pthread support
5764 # do this before the optional library checks as some of them require pthreads
5765 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5766     if check_lib pthreads pthread.h pthread_join   -pthread &&
5767        check_lib pthreads pthread.h pthread_create -pthread; then
5768         add_cflags -pthread
5769     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5770          check_lib pthreads pthread.h pthread_create -pthreads; then
5771         add_cflags -pthreads
5772     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5773          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5774         add_cflags -ldl -pthread
5775     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5776          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5777         :
5778     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5779          check_lib pthreads pthread.h pthread_create -lpthread; then
5780         :
5781     elif check_func pthread_join && check_func pthread_create; then
5782         enable pthreads
5783     fi
5784     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5785
5786     if enabled pthreads; then
5787         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5788         check_func pthread_cancel $pthreads_extralibs
5789     fi
5790 fi
5791
5792 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5793 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5794 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5795
5796 # On some systems dynamic loading requires no extra linker flags
5797 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5798
5799 check_lib libm math.h sin -lm
5800
5801 atan2f_args=2
5802 copysign_args=2
5803 hypot_args=2
5804 ldexpf_args=2
5805 powf_args=2
5806
5807 for func in $MATH_FUNCS; do
5808     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5809 done
5810
5811 for func in $COMPLEX_FUNCS; do
5812     eval check_complexfunc $func \${${func}_args:-1}
5813 done
5814
5815 # these are off by default, so fail if requested and not available
5816 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5817 enabled cuvid             && { enabled cuda ||
5818                                die "ERROR: CUVID requires CUDA"; }
5819 enabled nvdec             && { enabled cuda ||
5820                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5821 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5822 enabled decklink          && { require_header DeckLinkAPI.h &&
5823                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5824 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5825 enabled frei0r            && require_header frei0r.h
5826 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5827 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5828 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5829 enabled ladspa            && require_header ladspa.h
5830 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5831 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5832 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5833 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5834 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5835                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5836                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5837 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5838 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5839 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5840 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5841                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5842                                  warn "using libfdk without pkg-config"; } }
5843 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5844 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5845 enabled fontconfig        && enable libfontconfig
5846 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5847 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5848 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5849 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5850                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5851 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5852                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5853                                done || die "ERROR: libgsm not found"; }
5854 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5855 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5856 # While it may appear that require is being used as a pkg-config
5857 # fallback for libmfx, it is actually being used to detect a different
5858 # installation route altogether.  If libmfx is installed via the Intel
5859 # Media SDK or Intel Media Server Studio, these don't come with
5860 # pkg-config support.  Instead, users should make sure that the build
5861 # can find the libraries and headers through other means.
5862 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5863                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5864 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5865 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5866 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5867 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5868                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5869                                die "ERROR: libnpp not found"; }
5870 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5871 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5872 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5873                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5874                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5875                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5876 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5877 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5878                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5879 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5880 enabled libopus           && {
5881     enabled libopus_decoder && {
5882         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5883     }
5884     enabled libopus_encoder && {
5885         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5886     }
5887 }
5888 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5889 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5890 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5891 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5892 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5893 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5894                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5895 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5896 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5897 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5898 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5899 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5900 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5901 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5902                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5903                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5904 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5905 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5906 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5907 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5908 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5909                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5910
5911 enabled libvpx            && {
5912     enabled libvpx_vp8_decoder && {
5913         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5914             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5915                 die "ERROR: libvpx decoder version must be >=1.4.0";
5916     }
5917     enabled libvpx_vp8_encoder && {
5918         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5919             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5920                 die "ERROR: libvpx encoder version must be >=1.4.0";
5921     }
5922     enabled libvpx_vp9_decoder && {
5923         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5924             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5925     }
5926     enabled libvpx_vp9_encoder && {
5927         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5928             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5929     }
5930     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5931         die "libvpx enabled but no supported decoders found"
5932     fi
5933 }
5934
5935 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5936 enabled libwebp           && {
5937     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5938     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5939 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5940                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5941                                  warn "using libx264 without pkg-config"; } } &&
5942                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5943                              { check_cpp_condition x264.h "X264_MPEG2" &&
5944                                enable libx262; }
5945 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5946                              require_cpp_condition x265.h "X265_BUILD >= 68"
5947 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5948 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5949 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5950 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5951 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5952                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5953                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5954 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5955 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5956 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5957                                { ! enabled cross_compile &&
5958                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5959                                  add_ldflags -L/opt/vc/lib/ &&
5960                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5961                                die "ERROR: mmal not found" &&
5962                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5963 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5964                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5965                                die "ERROR: openal not found"; } &&
5966                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5967                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5968 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5969                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5970                                die "ERROR: opencl not found"; } &&
5971                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5972                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5973                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5974 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5975                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5976                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5977                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5978                                die "ERROR: opengl not found."
5979                              }
5980 enabled omx               && require_header OMX_Core.h
5981 enabled omx_rpi           && { check_header OMX_Core.h ||
5982                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5983                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5984 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5985                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5986                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5987                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5988                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5989                                die "ERROR: openssl not found"; }
5990 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5991                                  die "ERROR : Rockchip MPP was not found."; } &&
5992                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5993                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5994                                { enabled libdrm ||
5995                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5996                              }
5997
5998 if enabled gcrypt; then
5999     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6000     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6001         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6002         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6003         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6004             die "ERROR: gcrypt not found"
6005         add_cflags $gcrypt_cflags
6006     else
6007         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6008     fi
6009 fi
6010
6011 if enabled sdl2; then
6012     SDL2_CONFIG="${cross_prefix}sdl2-config"
6013     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6014         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6015             disable sdl2
6016     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6017         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6018         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6019         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6020         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6021         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6022             enable sdl2
6023     fi
6024     if test $target_os = "mingw32"; then
6025         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6026     fi
6027 fi
6028
6029 if enabled decklink; then
6030     case $target_os in
6031         mingw32*|mingw64*|win32|win64)
6032             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6033             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6034             ;;
6035     esac
6036 fi
6037
6038 enabled securetransport &&
6039     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6040     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6041         disable securetransport
6042
6043 enabled securetransport &&
6044     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6045
6046 enabled schannel &&
6047     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6048     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6049     schannel_extralibs="-lsecur32" ||
6050         disable schannel
6051
6052 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6053 enabled makeinfo \
6054     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6055     && enable makeinfo_html || disable makeinfo_html
6056 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6057 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6058 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6059 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6060
6061 # check V4L2 codecs available in the API
6062 check_header linux/fb.h
6063 check_header linux/videodev2.h
6064 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6065 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6066 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6067 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6068 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6069 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6070 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6071 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6072 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6073 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6074 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6075
6076 check_header sys/videoio.h
6077 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6078
6079 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6080 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6081 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6082 # w32api 3.12 had it defined wrong
6083 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6084
6085 check_type "dshow.h" IBaseFilter
6086
6087 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6088 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6089     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6090     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6091     check_header "dev/ic/bt8xx.h"
6092
6093 if check_struct sys/soundcard.h audio_buf_info bytes; then
6094     enable_sanitized sys/soundcard.h
6095 else
6096     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6097     #include <sys/soundcard.h>
6098     audio_buf_info abc;
6099 EOF
6100 fi
6101
6102 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6103     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6104
6105 enabled libjack &&
6106     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6107
6108 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6109
6110 if enabled libcdio; then
6111     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6112     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6113     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6114     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6115     die "ERROR: No usable libcdio/cdparanoia found"
6116 fi
6117
6118 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6119     disable libxcb_shm libxcb_shape libxcb_xfixes
6120
6121 if enabled libxcb; then
6122     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6123     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6124     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6125 fi
6126
6127 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6128
6129 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6130 # the desktop api partition
6131 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6132 #ifdef WINAPI_FAMILY
6133 #include <winapifamily.h>
6134 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6135 #error desktop, not uwp
6136 #else
6137 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6138 #endif
6139 #else
6140 #error no family set
6141 #endif
6142 EOF
6143
6144 enabled vaapi &&
6145     check_lib vaapi va/va.h vaInitialize -lva
6146
6147 enabled vaapi &&
6148     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6149     disable vaapi
6150
6151 enabled vaapi &&
6152     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6153
6154 enabled vaapi &&
6155     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6156
6157 enabled vaapi &&
6158     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6159     enable vaapi_1
6160
6161 if enabled_all opencl vaapi ; then
6162     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6163         enable opencl_vaapi_beignet
6164     if enabled libmfx ; then
6165         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6166             enable opencl_vaapi_intel_media
6167     fi
6168 fi
6169
6170 if enabled_all opencl dxva2 ; then
6171     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6172         enable opencl_dxva2
6173 fi
6174
6175 enabled vdpau &&
6176     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6177     disable vdpau
6178
6179 enabled vdpau &&
6180     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6181
6182 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6183
6184 if enabled x86; then
6185     case $target_os in
6186         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6187             ;;
6188         *)
6189             disable cuda cuvid nvdec nvenc
6190             ;;
6191     esac
6192 else
6193     disable cuda cuvid nvdec nvenc
6194 fi
6195
6196 enabled nvenc &&
6197     check_cc -I$source_path <<EOF || disable nvenc
6198 #include "compat/nvenc/nvEncodeAPI.h"
6199 NV_ENCODE_API_FUNCTION_LIST flist;
6200 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6201 int main(void) { return 0; }
6202 EOF
6203
6204 # Funny iconv installations are not unusual, so check it after all flags have been set
6205 if enabled libc_iconv; then
6206     check_func_headers iconv.h iconv
6207 elif enabled iconv; then
6208     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6209 fi
6210
6211 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6212
6213 # add some useful compiler flags if supported
6214 check_cflags -Wdeclaration-after-statement
6215 check_cflags -Wall
6216 check_cflags -Wdisabled-optimization
6217 check_cflags -Wpointer-arith
6218 check_cflags -Wredundant-decls
6219 check_cflags -Wwrite-strings
6220 check_cflags -Wtype-limits
6221 check_cflags -Wundef
6222 check_cflags -Wmissing-prototypes
6223 check_cflags -Wno-pointer-to-int-cast
6224 check_cflags -Wstrict-prototypes
6225 check_cflags -Wempty-body
6226
6227 if enabled extra_warnings; then
6228     check_cflags -Wcast-qual
6229     check_cflags -Wextra
6230     check_cflags -Wpedantic
6231 fi
6232
6233 check_disable_warning(){
6234     warning_flag=-W${1#-Wno-}
6235     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6236 }
6237
6238 test_cflags -Werror=unused-command-line-argument &&
6239     append unknown_warning_flags "-Werror=unused-command-line-argument"
6240 test_cflags -Werror=unknown-warning-option &&
6241     append unknown_warning_flags "-Werror=unknown-warning-option"
6242
6243 check_disable_warning -Wno-parentheses
6244 check_disable_warning -Wno-switch
6245 check_disable_warning -Wno-format-zero-length
6246 check_disable_warning -Wno-pointer-sign
6247 check_disable_warning -Wno-unused-const-variable
6248 check_disable_warning -Wno-bool-operation
6249
6250 check_disable_warning_headers(){
6251     warning_flag=-W${1#-Wno-}
6252     test_cflags $warning_flag && add_cflags_headers $1
6253 }
6254
6255 check_disable_warning_headers -Wno-deprecated-declarations
6256 check_disable_warning_headers -Wno-unused-variable
6257
6258 check_cc <<EOF && enable blocks_extension
6259 void (^block)(void);
6260 EOF
6261
6262 # add some linker flags
6263 check_ldflags -Wl,--warn-common
6264 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6265 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6266 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6267
6268 # add some strip flags
6269 check_stripflags -x
6270
6271 enabled neon_clobber_test &&
6272     check_ldflags -Wl,--wrap,avcodec_open2              \
6273                   -Wl,--wrap,avcodec_decode_audio4      \
6274                   -Wl,--wrap,avcodec_decode_video2      \
6275                   -Wl,--wrap,avcodec_decode_subtitle2   \
6276                   -Wl,--wrap,avcodec_encode_audio2      \
6277                   -Wl,--wrap,avcodec_encode_video2      \
6278                   -Wl,--wrap,avcodec_encode_subtitle    \
6279                   -Wl,--wrap,avcodec_send_packet        \
6280                   -Wl,--wrap,avcodec_receive_packet     \
6281                   -Wl,--wrap,avcodec_send_frame         \
6282                   -Wl,--wrap,avcodec_receive_frame      \
6283                   -Wl,--wrap,swr_convert                \
6284                   -Wl,--wrap,avresample_convert ||
6285     disable neon_clobber_test
6286
6287 enabled xmm_clobber_test &&
6288     check_ldflags -Wl,--wrap,avcodec_open2              \
6289                   -Wl,--wrap,avcodec_decode_audio4      \
6290                   -Wl,--wrap,avcodec_decode_video2      \
6291                   -Wl,--wrap,avcodec_decode_subtitle2   \
6292                   -Wl,--wrap,avcodec_encode_audio2      \
6293                   -Wl,--wrap,avcodec_encode_video2      \
6294                   -Wl,--wrap,avcodec_encode_subtitle    \
6295                   -Wl,--wrap,avcodec_send_packet        \
6296                   -Wl,--wrap,avcodec_receive_packet     \
6297                   -Wl,--wrap,avcodec_send_frame         \
6298                   -Wl,--wrap,avcodec_receive_frame      \
6299                   -Wl,--wrap,swr_convert                \
6300                   -Wl,--wrap,avresample_convert         \
6301                   -Wl,--wrap,sws_scale ||
6302     disable xmm_clobber_test
6303
6304 check_ld "cc" <<EOF && enable proper_dce
6305 extern const int array[512];
6306 static inline int func(void) { return array[0]; }
6307 int main(void) { return 0; }
6308 EOF
6309
6310 if enabled proper_dce; then
6311     echo "X { local: *; };" > $TMPV
6312     if test_ldflags -Wl,${version_script},$TMPV; then
6313         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6314         quotes='""'
6315         check_cc <<EOF && enable symver_asm_label
6316 void ff_foo(void) __asm__ ("av_foo@VERSION");
6317 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6318 EOF
6319         check_cc <<EOF && enable symver_gnu_asm
6320 __asm__(".symver ff_foo,av_foo@VERSION");
6321 void ff_foo(void) {}
6322 EOF
6323     fi
6324 fi
6325
6326 if [ -z "$optflags" ]; then
6327     if enabled small; then
6328         optflags=$cflags_size
6329     elif enabled optimizations; then
6330         optflags=$cflags_speed
6331     else
6332         optflags=$cflags_noopt
6333     fi
6334 fi
6335
6336 if [ -z "$nvccflags" ]; then
6337     nvccflags=$nvccflags_default
6338 fi
6339
6340 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6341     nvccflags="$nvccflags -m64"
6342 else
6343     nvccflags="$nvccflags -m32"
6344 fi
6345
6346 check_optflags(){
6347     check_cflags "$@"
6348     enabled lto && check_ldflags "$@"
6349 }
6350
6351 check_optflags $optflags
6352 check_optflags -fno-math-errno
6353 check_optflags -fno-signed-zeros
6354
6355 if enabled lto; then
6356     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6357     check_cflags  -flto
6358     check_ldflags -flto $cpuflags
6359     disable inline_asm_direct_symbol_refs
6360 fi
6361
6362 enabled ftrapv && check_cflags -ftrapv
6363
6364 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6365 int x;
6366 EOF
6367
6368
6369 if enabled icc; then
6370     # Just warnings, no remarks
6371     check_cflags -w1
6372     # -wd: Disable following warnings
6373     # 144, 167, 556: -Wno-pointer-sign
6374     # 188: enumerated type mixed with another type
6375     # 1292: attribute "foo" ignored
6376     # 1419: external declaration in primary source file
6377     # 10006: ignoring unknown option -fno-signed-zeros
6378     # 10148: ignoring unknown option -Wno-parentheses
6379     # 10156: ignoring option '-W'; no argument required
6380     # 13200: No EMMS instruction before call to function
6381     # 13203: No EMMS instruction before return from function
6382     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6383     # 11030: Warning unknown option --as-needed
6384     # 10156: ignoring option '-export'; no argument required
6385     check_ldflags -wd10156,11030
6386     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6387     enable ebp_available
6388     # The test above does not test linking
6389     enabled lto && disable symver_asm_label
6390     if enabled x86_32; then
6391         icc_version=$($cc -dumpversion)
6392         test ${icc_version%%.*} -ge 11 &&
6393             check_cflags -falign-stack=maintain-16-byte ||
6394             disable aligned_stack
6395     fi
6396 elif enabled gcc; then
6397     check_optflags -fno-tree-vectorize
6398     check_cflags -Werror=format-security
6399     check_cflags -Werror=implicit-function-declaration
6400     check_cflags -Werror=missing-prototypes
6401     check_cflags -Werror=return-type
6402     check_cflags -Werror=vla
6403     check_cflags -Wformat
6404     check_cflags -fdiagnostics-color=auto
6405     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6406 elif enabled llvm_gcc; then
6407     check_cflags -mllvm -stack-alignment=16
6408 elif enabled clang; then
6409     check_cflags -mllvm -stack-alignment=16
6410     check_cflags -mstack-alignment=16
6411     check_cflags -Qunused-arguments
6412     check_cflags -Werror=implicit-function-declaration
6413     check_cflags -Werror=missing-prototypes
6414     check_cflags -Werror=return-type
6415 elif enabled cparser; then
6416     add_cflags -Wno-missing-variable-declarations
6417     add_cflags -Wno-empty-statement
6418 elif enabled armcc; then
6419     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6420     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6421     # 2523: use of inline assembly is deprecated
6422     add_cflags -W${armcc_opt},--diag_suppress=2523
6423     add_cflags -W${armcc_opt},--diag_suppress=1207
6424     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6425     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6426     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6427     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6428 elif enabled pathscale; then
6429     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6430     disable inline_asm
6431 elif enabled_any msvc icl; then
6432     enabled x86_32 && disable aligned_stack
6433     enabled_all x86_32 debug && add_cflags -Oy-
6434     enabled debug && add_ldflags -debug
6435     enable pragma_deprecated
6436     if enabled icl; then
6437         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6438         # (correctly) on icl 13.x.
6439         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6440             add_cflags -Qansi-alias
6441         # Some inline asm is not compilable in debug
6442         if enabled debug; then
6443             disable ebp_available
6444             disable ebx_available
6445         fi
6446     fi
6447     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6448     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6449     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6450     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6451     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6452     # MSVC 2013 and newer can handle it fine.
6453     # If this declspec fails, force including stdlib.h before the restrict redefinition
6454     # happens in config.h.
6455     if [ $_restrict != restrict ]; then
6456         check_cc <<EOF || add_cflags -FIstdlib.h
6457 __declspec($_restrict) void* foo(int);
6458 EOF
6459     fi
6460     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6461     # Issue has been fixed in MSVC v19.00.24218.
6462     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6463         check_cflags -d2SSAOptimizer-
6464     # enable utf-8 source processing on VS2015 U2 and newer
6465     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6466         add_cflags -utf-8
6467 fi
6468
6469 for pfx in "" host_; do
6470     varname=${pfx%_}cc_type
6471     eval "type=\$$varname"
6472     if [ "$type" = "msvc" ]; then
6473         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6474 static inline int foo(int a) { return a; }
6475 EOF
6476     fi
6477 done
6478
6479 case $as_type in
6480     clang)
6481         add_asflags -Qunused-arguments
6482     ;;
6483 esac
6484
6485 case $ld_type in
6486     clang)
6487         check_ldflags -Qunused-arguments
6488     ;;
6489 esac
6490
6491 enable frame_thread_encoder
6492
6493 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6494
6495 check_deps $CONFIG_LIST       \
6496            $CONFIG_EXTRA      \
6497            $HAVE_LIST         \
6498            $ALL_COMPONENTS    \
6499
6500 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
6501
6502
6503 if test $target_os = "haiku"; then
6504     disable memalign
6505     disable posix_memalign
6506 fi
6507
6508 flatten_extralibs(){
6509     unset nested_entries
6510     list_name=$1
6511     eval list=\$${1}
6512     for entry in $list; do
6513         entry_copy=$entry
6514         resolve entry_copy
6515         append nested_entries $(filter '*_extralibs' $entry_copy)
6516         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6517         eval $entry="\$flat_entries"
6518     done
6519     append $list_name "$nested_entries"
6520
6521     resolve nested_entries
6522     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6523         flatten_extralibs $list_name
6524     fi
6525 }
6526
6527 flatten_extralibs_wrapper(){
6528     list_name=$1
6529     flatten_extralibs $list_name
6530     unique $list_name
6531     resolve $list_name
6532     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6533     eval printf \''%s'\' \""\$$list_name"\"
6534 }
6535
6536 for linkunit in $LIBRARY_LIST; do
6537     unset current_extralibs
6538     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6539     for comp in ${components}; do
6540         enabled $comp || continue
6541         comp_extralibs="${comp}_extralibs"
6542         append current_extralibs $comp_extralibs
6543     done
6544     eval prepend ${linkunit}_extralibs $current_extralibs
6545 done
6546
6547 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6548     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6549 done
6550
6551 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6552
6553 for thread in $THREADS_LIST; do
6554     if enabled $thread; then
6555         test -n "$thread_type" &&
6556             die "ERROR: Only one thread type must be selected." ||
6557             thread_type="$thread"
6558     fi
6559 done
6560
6561 if disabled stdatomic; then
6562     if enabled atomics_gcc; then
6563         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6564     elif enabled atomics_win32; then
6565         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6566     elif enabled atomics_suncc; then
6567         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6568     elif enabled pthreads; then
6569         add_compat atomics/pthread/stdatomic.o
6570         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6571     else
6572         enabled threads && die "Threading is enabled, but no atomics are available"
6573         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6574     fi
6575 fi
6576
6577 # Check if requested libraries were found.
6578 for lib in $AUTODETECT_LIBS; do
6579     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6580 done
6581
6582 enabled zlib && add_cppflags -DZLIB_CONST
6583
6584 # conditional library dependencies, in linking order
6585 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6586 enabled afir_filter         && prepend avfilter_deps "avcodec"
6587 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6588 enabled aresample_filter    && prepend avfilter_deps "swresample"
6589 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6590 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6591 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6592 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6593 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6594 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6595 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6596 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6597 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6598 enabled pan_filter          && prepend avfilter_deps "swresample"
6599 enabled pp_filter           && prepend avfilter_deps "postproc"
6600 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6601 enabled resample_filter && prepend avfilter_deps "avresample"
6602 enabled sab_filter          && prepend avfilter_deps "swscale"
6603 enabled scale_filter    && prepend avfilter_deps "swscale"
6604 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6605 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6606 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6607 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6608 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6609 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6610 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6611 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6612 enabled spp_filter          && prepend avfilter_deps "avcodec"
6613 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6614 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6615 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6616
6617 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6618
6619 #FIXME
6620 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6621
6622 enabled opus_decoder    && prepend avcodec_deps "swresample"
6623
6624 expand_deps(){
6625     lib_deps=${1}_deps
6626     eval "deps=\$$lib_deps"
6627     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6628     unique $lib_deps
6629 }
6630
6631 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6632 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6633
6634 map 'expand_deps $v' $LIBRARY_LIST
6635
6636 license="LGPL version 2.1 or later"
6637 if enabled nonfree; then
6638     license="nonfree and unredistributable"
6639 elif enabled gplv3; then
6640     license="GPL version 3 or later"
6641 elif enabled lgplv3; then
6642     license="LGPL version 3 or later"
6643 elif enabled gpl; then
6644     license="GPL version 2 or later"
6645 fi
6646
6647 if test "$quiet" != "yes"; then
6648
6649 echo "install prefix            $prefix"
6650 echo "source path               $source_path"
6651 echo "C compiler                $cc"
6652 echo "C library                 $libc_type"
6653 if test "$host_cc" != "$cc"; then
6654     echo "host C compiler           $host_cc"
6655     echo "host C library            $host_libc_type"
6656 fi
6657 echo "ARCH                      $arch ($cpu)"
6658 if test "$build_suffix" != ""; then
6659     echo "build suffix              $build_suffix"
6660 fi
6661 if test "$progs_suffix" != ""; then
6662     echo "progs suffix              $progs_suffix"
6663 fi
6664 if test "$extra_version" != ""; then
6665     echo "version string suffix     $extra_version"
6666 fi
6667 echo "big-endian                ${bigendian-no}"
6668 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6669 if enabled x86; then
6670     echo "standalone assembly       ${x86asm-no}"
6671     echo "x86 assembler             ${x86asmexe}"
6672     echo "MMX enabled               ${mmx-no}"
6673     echo "MMXEXT enabled            ${mmxext-no}"
6674     echo "3DNow! enabled            ${amd3dnow-no}"
6675     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6676     echo "SSE enabled               ${sse-no}"
6677     echo "SSSE3 enabled             ${ssse3-no}"
6678     echo "AESNI enabled             ${aesni-no}"
6679     echo "AVX enabled               ${avx-no}"
6680     echo "AVX2 enabled              ${avx2-no}"
6681     echo "XOP enabled               ${xop-no}"
6682     echo "FMA3 enabled              ${fma3-no}"
6683     echo "FMA4 enabled              ${fma4-no}"
6684     echo "i686 features enabled     ${i686-no}"
6685     echo "CMOV is fast              ${fast_cmov-no}"
6686     echo "EBX available             ${ebx_available-no}"
6687     echo "EBP available             ${ebp_available-no}"
6688 fi
6689 if enabled aarch64; then
6690     echo "NEON enabled              ${neon-no}"
6691     echo "VFP enabled               ${vfp-no}"
6692 fi
6693 if enabled arm; then
6694     echo "ARMv5TE enabled           ${armv5te-no}"
6695     echo "ARMv6 enabled             ${armv6-no}"
6696     echo "ARMv6T2 enabled           ${armv6t2-no}"
6697     echo "VFP enabled               ${vfp-no}"
6698     echo "NEON enabled              ${neon-no}"
6699     echo "THUMB enabled             ${thumb-no}"
6700 fi
6701 if enabled mips; then
6702     echo "MIPS FPU enabled          ${mipsfpu-no}"
6703     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6704     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6705     echo "MIPS MSA enabled          ${msa-no}"
6706     echo "LOONGSON MMI enabled      ${mmi-no}"
6707 fi
6708 if enabled ppc; then
6709     echo "AltiVec enabled           ${altivec-no}"
6710     echo "VSX enabled               ${vsx-no}"
6711     echo "POWER8 enabled            ${power8-no}"
6712     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6713     echo "dcbzl available           ${dcbzl-no}"
6714 fi
6715 echo "debug symbols             ${debug-no}"
6716 echo "strip symbols             ${stripping-no}"
6717 echo "optimize for size         ${small-no}"
6718 echo "optimizations             ${optimizations-no}"
6719 echo "static                    ${static-no}"
6720 echo "shared                    ${shared-no}"
6721 echo "postprocessing support    ${postproc-no}"
6722 echo "network support           ${network-no}"
6723 echo "threading support         ${thread_type-no}"
6724 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6725 echo "texi2html enabled         ${texi2html-no}"
6726 echo "perl enabled              ${perl-no}"
6727 echo "pod2man enabled           ${pod2man-no}"
6728 echo "makeinfo enabled          ${makeinfo-no}"
6729 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6730 test -n "$random_seed" &&
6731     echo "random seed               ${random_seed}"
6732 echo
6733
6734 echo "External libraries:"
6735 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6736 echo
6737
6738 echo "External libraries providing hardware acceleration:"
6739 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6740 echo
6741
6742 echo "Libraries:"
6743 print_enabled '' $LIBRARY_LIST | print_in_columns
6744 echo
6745
6746 echo "Programs:"
6747 print_enabled '' $PROGRAM_LIST | print_in_columns
6748 echo
6749
6750 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6751     echo "Enabled ${type}s:"
6752     eval list=\$$(toupper $type)_LIST
6753     print_enabled '_*' $list | print_in_columns
6754     echo
6755 done
6756
6757 if test -n "$ignore_tests"; then
6758     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6759     echo "Ignored FATE tests:"
6760     echo $ignore_tests | print_in_columns
6761     echo
6762 fi
6763
6764 echo "License: $license"
6765
6766 fi # test "$quiet" != "yes"
6767
6768 if test -n "$WARNINGS"; then
6769     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6770     enabled fatal_warnings && exit 1
6771 fi
6772
6773 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6774
6775 esc(){
6776     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6777 }
6778
6779 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6780
6781 enabled stripping || strip="echo skipping strip"
6782 enabled stripping || striptype=""
6783
6784 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6785
6786 cat > ffbuild/config.mak <<EOF
6787 # Automatically generated by configure - do not modify!
6788 ifndef FFMPEG_CONFIG_MAK
6789 FFMPEG_CONFIG_MAK=1
6790 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6791 prefix=$prefix
6792 LIBDIR=\$(DESTDIR)$libdir
6793 SHLIBDIR=\$(DESTDIR)$shlibdir
6794 INCDIR=\$(DESTDIR)$incdir
6795 BINDIR=\$(DESTDIR)$bindir
6796 DATADIR=\$(DESTDIR)$datadir
6797 DOCDIR=\$(DESTDIR)$docdir
6798 MANDIR=\$(DESTDIR)$mandir
6799 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6800 INSTALL_NAME_DIR=$install_name_dir
6801 SRC_PATH=$source_path
6802 SRC_LINK=$source_link
6803 ifndef MAIN_MAKEFILE
6804 SRC_PATH:=\$(SRC_PATH:.%=..%)
6805 endif
6806 CC_IDENT=$cc_ident
6807 ARCH=$arch
6808 INTRINSICS=$intrinsics
6809 EXTERN_PREFIX=$extern_prefix
6810 CC=$cc
6811 CXX=$cxx
6812 AS=$as
6813 OBJCC=$objcc
6814 LD=$ld
6815 DEPCC=$dep_cc
6816 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6817 DEPAS=$as
6818 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6819 X86ASM=$x86asmexe
6820 DEPX86ASM=$x86asmexe
6821 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6822 AR=$ar
6823 ARFLAGS=$arflags
6824 AR_O=$ar_o
6825 AR_CMD=$ar
6826 NM_CMD=$nm
6827 RANLIB=$ranlib
6828 STRIP=$strip
6829 STRIPTYPE=$striptype
6830 NVCC=$nvcc
6831 CP=cp -p
6832 LN_S=$ln_s
6833 CPPFLAGS=$CPPFLAGS
6834 CFLAGS=$CFLAGS
6835 CXXFLAGS=$CXXFLAGS
6836 OBJCFLAGS=$OBJCFLAGS
6837 ASFLAGS=$ASFLAGS
6838 NVCCFLAGS=$nvccflags
6839 AS_C=$AS_C
6840 AS_O=$AS_O
6841 OBJCC_C=$OBJCC_C
6842 OBJCC_E=$OBJCC_E
6843 OBJCC_O=$OBJCC_O
6844 CC_C=$CC_C
6845 CC_E=$CC_E
6846 CC_O=$CC_O
6847 CXX_C=$CXX_C
6848 CXX_O=$CXX_O
6849 NVCC_C=$NVCC_C
6850 NVCC_O=$NVCC_O
6851 LD_O=$LD_O
6852 X86ASM_O=$X86ASM_O
6853 LD_LIB=$LD_LIB
6854 LD_PATH=$LD_PATH
6855 WINDRES=$windres
6856 DEPWINDRES=$dep_cc
6857 DOXYGEN=$doxygen
6858 LDFLAGS=$LDFLAGS
6859 LDEXEFLAGS=$LDEXEFLAGS
6860 LDSOFLAGS=$LDSOFLAGS
6861 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6862 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6863 X86ASMFLAGS=$X86ASMFLAGS
6864 BUILDSUF=$build_suffix
6865 PROGSSUF=$progs_suffix
6866 FULLNAME=$FULLNAME
6867 LIBPREF=$LIBPREF
6868 LIBSUF=$LIBSUF
6869 LIBNAME=$LIBNAME
6870 SLIBPREF=$SLIBPREF
6871 SLIBSUF=$SLIBSUF
6872 EXESUF=$EXESUF
6873 EXTRA_VERSION=$extra_version
6874 CCDEP=$CCDEP
6875 CXXDEP=$CXXDEP
6876 CCDEP_FLAGS=$CCDEP_FLAGS
6877 ASDEP=$ASDEP
6878 ASDEP_FLAGS=$ASDEP_FLAGS
6879 X86ASMDEP=$X86ASMDEP
6880 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6881 CC_DEPFLAGS=$CC_DEPFLAGS
6882 AS_DEPFLAGS=$AS_DEPFLAGS
6883 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6884 HOSTCC=$host_cc
6885 HOSTLD=$host_ld
6886 HOSTCFLAGS=$host_cflags
6887 HOSTCPPFLAGS=$host_cppflags
6888 HOSTEXESUF=$HOSTEXESUF
6889 HOSTLDFLAGS=$host_ldflags
6890 HOSTEXTRALIBS=$host_extralibs
6891 DEPHOSTCC=$host_cc
6892 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6893 HOSTCCDEP=$HOSTCCDEP
6894 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6895 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6896 HOSTCC_C=$HOSTCC_C
6897 HOSTCC_O=$HOSTCC_O
6898 HOSTLD_O=$HOSTLD_O
6899 TARGET_EXEC=$target_exec $target_exec_args
6900 TARGET_PATH=$target_path
6901 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6902 CFLAGS-ffplay=${sdl2_cflags}
6903 CFLAGS_HEADERS=$CFLAGS_HEADERS
6904 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6905 EXTRALIBS=$extralibs
6906 COMPAT_OBJS=$compat_objs
6907 INSTALL=$install
6908 SLIBNAME=${SLIBNAME}
6909 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6910 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6911 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6912 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6913 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6914 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6915 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6916 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6917 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6918 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6919 NOREDZONE_FLAGS=$noredzone_flags
6920 LIBFUZZER_PATH=$libfuzzer_path
6921 IGNORE_TESTS=$ignore_tests
6922 EOF
6923
6924 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6925
6926 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6927     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6928 done
6929
6930 cat > $TMPH <<EOF
6931 /* Automatically generated by configure - do not modify! */
6932 #ifndef FFMPEG_CONFIG_H
6933 #define FFMPEG_CONFIG_H
6934 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6935 #define FFMPEG_LICENSE "$(c_escape $license)"
6936 #define CONFIG_THIS_YEAR 2017
6937 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6938 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6939 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6940 #define av_restrict $_restrict
6941 #define EXTERN_PREFIX "${extern_prefix}"
6942 #define EXTERN_ASM ${extern_prefix}
6943 #define BUILDSUF "$build_suffix"
6944 #define SLIBSUF "$SLIBSUF"
6945 #define HAVE_MMX2 HAVE_MMXEXT
6946 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6947 EOF
6948
6949 test -n "$assert_level" &&
6950     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6951
6952 test -n "$malloc_prefix" &&
6953     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6954
6955 if enabled x86asm; then
6956     append config_files $TMPASM
6957     cat > $TMPASM <<EOF
6958 ; Automatically generated by configure - do not modify!
6959 EOF
6960 fi
6961
6962 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6963
6964
6965 mkdir -p doc
6966 mkdir -p tests
6967 mkdir -p tests/api
6968 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6969
6970 print_config ARCH_   "$config_files" $ARCH_LIST
6971 print_config HAVE_   "$config_files" $HAVE_LIST
6972 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6973                                      $CONFIG_EXTRA      \
6974                                      $ALL_COMPONENTS    \
6975
6976 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6977 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6978
6979 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6980 cp_if_changed $TMPH config.h
6981 touch ffbuild/.config
6982
6983 enabled x86asm && cp_if_changed $TMPASM config.asm
6984
6985 cat > $TMPH <<EOF
6986 /* Generated by ffmpeg configure */
6987 #ifndef AVUTIL_AVCONFIG_H
6988 #define AVUTIL_AVCONFIG_H
6989 EOF
6990
6991 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6992
6993 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6994
6995 cp_if_changed $TMPH libavutil/avconfig.h
6996
6997 # generate the lists of enabled components
6998 print_enabled_components(){
6999     file=$1
7000     struct_name=$2
7001     name=$3
7002     shift 3
7003     echo "static const $struct_name * const $name[] = {" > $TMPH
7004     for c in $*; do
7005         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7006     done
7007     echo "    NULL };" >> $TMPH
7008     cp_if_changed $TMPH $file
7009 }
7010
7011 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7012 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7013
7014 # Settings for pkg-config files
7015
7016 cat > $TMPH <<EOF
7017 # Automatically generated by configure - do not modify!
7018 shared=$shared
7019 build_suffix=$build_suffix
7020 prefix=$prefix
7021 libdir=$libdir
7022 incdir=$incdir
7023 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7024 source_path=${source_path}
7025 LIBPREF=${LIBPREF}
7026 LIBSUF=${LIBSUF}
7027 extralibs_avutil="$avutil_extralibs"
7028 extralibs_avcodec="$avcodec_extralibs"
7029 extralibs_avformat="$avformat_extralibs"
7030 extralibs_avdevice="$avdevice_extralibs"
7031 extralibs_avfilter="$avfilter_extralibs"
7032 extralibs_avresample="$avresample_extralibs"
7033 extralibs_postproc="$postproc_extralibs"
7034 extralibs_swscale="$swscale_extralibs"
7035 extralibs_swresample="$swresample_extralibs"
7036 EOF
7037
7038 for lib in $LIBRARY_LIST; do
7039     lib_deps="$(eval echo \$${lib}_deps)"
7040     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7041 done
7042
7043 cp_if_changed $TMPH ffbuild/config.sh