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_d3d11
2124     opencl_drm_arm
2125     opencl_dxva2
2126     opencl_vaapi_beignet
2127     opencl_vaapi_intel_media
2128     perl
2129     pod2man
2130     texi2html
2131 "
2132
2133 # options emitted with CONFIG_ prefix but not available on the command line
2134 CONFIG_EXTRA="
2135     aandcttables
2136     ac3dsp
2137     adts_header
2138     audio_frame_queue
2139     audiodsp
2140     blockdsp
2141     bswapdsp
2142     cabac
2143     cbs
2144     cbs_h264
2145     cbs_h265
2146     cbs_mpeg2
2147     dirac_parse
2148     dvprofile
2149     exif
2150     faandct
2151     faanidct
2152     fdctdsp
2153     flacdsp
2154     fmtconvert
2155     frame_thread_encoder
2156     g722dsp
2157     golomb
2158     gplv3
2159     h263dsp
2160     h264chroma
2161     h264dsp
2162     h264parse
2163     h264pred
2164     h264qpel
2165     hevcparse
2166     hpeldsp
2167     huffman
2168     huffyuvdsp
2169     huffyuvencdsp
2170     idctdsp
2171     iirfilter
2172     mdct15
2173     intrax8
2174     iso_media
2175     ividsp
2176     jpegtables
2177     lgplv3
2178     libx262
2179     llauddsp
2180     llviddsp
2181     llvidencdsp
2182     lpc
2183     lzf
2184     me_cmp
2185     mpeg_er
2186     mpegaudio
2187     mpegaudiodsp
2188     mpegaudioheader
2189     mpegvideo
2190     mpegvideoenc
2191     mss34dsp
2192     pixblockdsp
2193     qpeldsp
2194     qsv
2195     qsvdec
2196     qsvenc
2197     qsvvpp
2198     rangecoder
2199     riffdec
2200     riffenc
2201     rtpdec
2202     rtpenc_chain
2203     rv34dsp
2204     sinewin
2205     snappy
2206     srtp
2207     startcode
2208     texturedsp
2209     texturedspenc
2210     tpeldsp
2211     vaapi_1
2212     vaapi_encode
2213     vc1dsp
2214     videodsp
2215     vp3dsp
2216     vp56dsp
2217     vp8dsp
2218     wma_freqs
2219     wmv2dsp
2220 "
2221
2222 CMDLINE_SELECT="
2223     $ARCH_EXT_LIST
2224     $CONFIG_LIST
2225     $HAVE_LIST_CMDLINE
2226     $THREADS_LIST
2227     asm
2228     cross_compile
2229     debug
2230     extra_warnings
2231     logging
2232     lto
2233     optimizations
2234     rpath
2235     stripping
2236 "
2237
2238 PATHS_LIST="
2239     bindir
2240     datadir
2241     docdir
2242     incdir
2243     libdir
2244     mandir
2245     pkgconfigdir
2246     prefix
2247     shlibdir
2248     install_name_dir
2249 "
2250
2251 CMDLINE_SET="
2252     $PATHS_LIST
2253     ar
2254     arch
2255     as
2256     assert_level
2257     build_suffix
2258     cc
2259     objcc
2260     cpu
2261     cross_prefix
2262     custom_allocator
2263     cxx
2264     dep_cc
2265     doxygen
2266     env
2267     extra_version
2268     gas
2269     host_cc
2270     host_cflags
2271     host_extralibs
2272     host_ld
2273     host_ldflags
2274     host_os
2275     ignore_tests
2276     install
2277     ld
2278     ln_s
2279     logfile
2280     malloc_prefix
2281     nm
2282     optflags
2283     nvccflags
2284     pkg_config
2285     pkg_config_flags
2286     progs_suffix
2287     random_seed
2288     ranlib
2289     samples
2290     strip
2291     sws_max_filter_size
2292     sysinclude
2293     sysroot
2294     target_exec
2295     target_os
2296     target_path
2297     target_samples
2298     tempprefix
2299     toolchain
2300     valgrind
2301     x86asmexe
2302 "
2303
2304 CMDLINE_APPEND="
2305     extra_cflags
2306     extra_cxxflags
2307     extra_objcflags
2308     host_cppflags
2309 "
2310
2311 # code dependency declarations
2312
2313 # architecture extensions
2314
2315 armv5te_deps="arm"
2316 armv6_deps="arm"
2317 armv6t2_deps="arm"
2318 armv8_deps="aarch64"
2319 neon_deps_any="aarch64 arm"
2320 intrinsics_neon_deps="neon"
2321 vfp_deps_any="aarch64 arm"
2322 vfpv3_deps="vfp"
2323 setend_deps="arm"
2324
2325 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2326
2327 altivec_deps="ppc"
2328 dcbzl_deps="ppc"
2329 ldbrx_deps="ppc"
2330 ppc4xx_deps="ppc"
2331 vsx_deps="altivec"
2332 power8_deps="vsx"
2333
2334 loongson2_deps="mips"
2335 loongson3_deps="mips"
2336 mips32r2_deps="mips"
2337 mips32r5_deps="mips"
2338 mips32r6_deps="mips"
2339 mips64r2_deps="mips"
2340 mips64r6_deps="mips"
2341 mipsfpu_deps="mips"
2342 mipsdsp_deps="mips"
2343 mipsdspr2_deps="mips"
2344 mmi_deps="mips"
2345 msa_deps="mipsfpu"
2346
2347 cpunop_deps="i686"
2348 x86_64_select="i686"
2349 x86_64_suggest="fast_cmov"
2350
2351 amd3dnow_deps="mmx"
2352 amd3dnowext_deps="amd3dnow"
2353 i686_deps="x86"
2354 mmx_deps="x86"
2355 mmxext_deps="mmx"
2356 sse_deps="mmxext"
2357 sse2_deps="sse"
2358 sse3_deps="sse2"
2359 ssse3_deps="sse3"
2360 sse4_deps="ssse3"
2361 sse42_deps="sse4"
2362 aesni_deps="sse42"
2363 avx_deps="sse42"
2364 xop_deps="avx"
2365 fma3_deps="avx"
2366 fma4_deps="avx"
2367 avx2_deps="avx"
2368
2369 mmx_external_deps="x86asm"
2370 mmx_inline_deps="inline_asm x86"
2371 mmx_suggest="mmx_external mmx_inline"
2372
2373 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2374     eval dep=\$${ext}_deps
2375     eval ${ext}_external_deps='"${dep}_external"'
2376     eval ${ext}_inline_deps='"${dep}_inline"'
2377     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2378 done
2379
2380 aligned_stack_if_any="aarch64 ppc x86"
2381 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2382 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2383 fast_unaligned_if_any="aarch64 ppc x86"
2384 simd_align_16_if_any="altivec neon sse"
2385 simd_align_32_if_any="avx"
2386
2387 # system capabilities
2388 symver_if_any="symver_asm_label symver_gnu_asm"
2389 valgrind_backtrace_conflict="optimizations"
2390 valgrind_backtrace_deps="valgrind_valgrind_h"
2391
2392 # threading support
2393 atomics_gcc_if="sync_val_compare_and_swap"
2394 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2395 atomics_win32_if="MemoryBarrier"
2396 atomics_native_if_any="$ATOMICS_LIST"
2397 w32threads_deps="atomics_native"
2398 threads_if_any="$THREADS_LIST"
2399
2400 # subsystems
2401 cbs_h264_select="cbs golomb"
2402 cbs_h265_select="cbs golomb"
2403 cbs_mpeg2_select="cbs"
2404 dct_select="rdft"
2405 dirac_parse_select="golomb"
2406 error_resilience_select="me_cmp"
2407 faandct_deps="faan"
2408 faandct_select="fdctdsp"
2409 faanidct_deps="faan"
2410 faanidct_select="idctdsp"
2411 h264dsp_select="startcode"
2412 hevcparse_select="golomb"
2413 frame_thread_encoder_deps="encoders threads"
2414 intrax8_select="blockdsp idctdsp"
2415 mdct_select="fft"
2416 mdct15_select="fft"
2417 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2418 mpeg_er_select="error_resilience"
2419 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2420 mpegaudiodsp_select="dct"
2421 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2422 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2423 vc1dsp_select="h264chroma qpeldsp startcode"
2424 rdft_select="fft"
2425
2426 # decoders / encoders
2427 aac_decoder_select="adts_header mdct15 mdct sinewin"
2428 aac_fixed_decoder_select="mdct sinewin"
2429 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2430 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2431 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2432 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2433 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2434 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2435 adpcm_g722_decoder_select="g722dsp"
2436 adpcm_g722_encoder_select="g722dsp"
2437 aic_decoder_select="golomb idctdsp"
2438 alac_encoder_select="lpc"
2439 als_decoder_select="bswapdsp"
2440 amrnb_decoder_select="lsp"
2441 amrwb_decoder_select="lsp"
2442 amv_decoder_select="sp5x_decoder exif"
2443 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2444 ape_decoder_select="bswapdsp llauddsp"
2445 apng_decoder_deps="zlib"
2446 apng_encoder_deps="zlib"
2447 apng_encoder_select="llvidencdsp"
2448 aptx_decoder_select="audio_frame_queue"
2449 aptx_encoder_select="audio_frame_queue"
2450 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2451 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2452 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2453 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2454 atrac1_decoder_select="mdct sinewin"
2455 atrac3_decoder_select="mdct"
2456 atrac3p_decoder_select="mdct sinewin"
2457 avrn_decoder_select="exif jpegtables"
2458 bink_decoder_select="blockdsp hpeldsp"
2459 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2460 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2461 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2462 clearvideo_decoder_select="idctdsp"
2463 cllc_decoder_select="bswapdsp"
2464 comfortnoise_encoder_select="lpc"
2465 cook_decoder_select="audiodsp mdct sinewin"
2466 cscd_decoder_select="lzo"
2467 cscd_decoder_suggest="zlib"
2468 dca_decoder_select="mdct"
2469 dds_decoder_select="texturedsp"
2470 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2471 dnxhd_decoder_select="blockdsp idctdsp"
2472 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2473 dolby_e_decoder_select="mdct"
2474 dvvideo_decoder_select="dvprofile idctdsp"
2475 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2476 dxa_decoder_deps="zlib"
2477 dxv_decoder_select="lzf texturedsp"
2478 eac3_decoder_select="ac3_decoder"
2479 eac3_encoder_select="ac3_encoder"
2480 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2481 eatgq_decoder_select="aandcttables"
2482 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2483 exr_decoder_deps="zlib"
2484 ffv1_decoder_select="rangecoder"
2485 ffv1_encoder_select="rangecoder"
2486 ffvhuff_decoder_select="huffyuv_decoder"
2487 ffvhuff_encoder_select="huffyuv_encoder"
2488 fic_decoder_select="golomb"
2489 flac_decoder_select="flacdsp"
2490 flac_encoder_select="bswapdsp flacdsp lpc"
2491 flashsv2_decoder_deps="zlib"
2492 flashsv2_encoder_deps="zlib"
2493 flashsv_decoder_deps="zlib"
2494 flashsv_encoder_deps="zlib"
2495 flv_decoder_select="h263_decoder"
2496 flv_encoder_select="h263_encoder"
2497 fourxm_decoder_select="blockdsp bswapdsp"
2498 fraps_decoder_select="bswapdsp huffman"
2499 g2m_decoder_deps="zlib"
2500 g2m_decoder_select="blockdsp idctdsp jpegtables"
2501 g729_decoder_select="audiodsp"
2502 h261_decoder_select="mpegvideo"
2503 h261_encoder_select="aandcttables mpegvideoenc"
2504 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2505 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2506 h263i_decoder_select="h263_decoder"
2507 h263p_decoder_select="h263_decoder"
2508 h263p_encoder_select="h263_encoder"
2509 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2510 h264_decoder_suggest="error_resilience"
2511 hap_decoder_select="snappy texturedsp"
2512 hap_encoder_deps="libsnappy"
2513 hap_encoder_select="texturedspenc"
2514 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2515 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2516 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2517 iac_decoder_select="imc_decoder"
2518 imc_decoder_select="bswapdsp fft mdct sinewin"
2519 indeo3_decoder_select="hpeldsp"
2520 indeo4_decoder_select="ividsp"
2521 indeo5_decoder_select="ividsp"
2522 interplay_video_decoder_select="hpeldsp"
2523 jpegls_decoder_select="mjpeg_decoder"
2524 jv_decoder_select="blockdsp"
2525 lagarith_decoder_select="llviddsp"
2526 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2527 magicyuv_decoder_select="llviddsp"
2528 magicyuv_encoder_select="llvidencdsp"
2529 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2530 metasound_decoder_select="lsp mdct sinewin"
2531 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2532 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2533 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2534 mjpegb_decoder_select="mjpeg_decoder"
2535 mlp_decoder_select="mlp_parser"
2536 mlp_encoder_select="lpc"
2537 motionpixels_decoder_select="bswapdsp"
2538 mp1_decoder_select="mpegaudio"
2539 mp1float_decoder_select="mpegaudio"
2540 mp2_decoder_select="mpegaudio"
2541 mp2float_decoder_select="mpegaudio"
2542 mp3_decoder_select="mpegaudio"
2543 mp3adu_decoder_select="mpegaudio"
2544 mp3adufloat_decoder_select="mpegaudio"
2545 mp3float_decoder_select="mpegaudio"
2546 mp3on4_decoder_select="mpegaudio"
2547 mp3on4float_decoder_select="mpegaudio"
2548 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2549 mpc8_decoder_select="mpegaudiodsp"
2550 mpegvideo_decoder_select="mpegvideo"
2551 mpeg1video_decoder_select="mpegvideo"
2552 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2553 mpeg2video_decoder_select="mpegvideo"
2554 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2555 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2556 mpeg4_encoder_select="h263_encoder"
2557 msa1_decoder_select="mss34dsp"
2558 mscc_decoder_deps="zlib"
2559 msmpeg4v1_decoder_select="h263_decoder"
2560 msmpeg4v2_decoder_select="h263_decoder"
2561 msmpeg4v2_encoder_select="h263_encoder"
2562 msmpeg4v3_decoder_select="h263_decoder"
2563 msmpeg4v3_encoder_select="h263_encoder"
2564 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2565 mts2_decoder_select="mss34dsp"
2566 mxpeg_decoder_select="mjpeg_decoder"
2567 nellymoser_decoder_select="mdct sinewin"
2568 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2569 nuv_decoder_select="idctdsp lzo"
2570 on2avc_decoder_select="mdct"
2571 opus_decoder_deps="swresample"
2572 opus_decoder_select="mdct15"
2573 opus_encoder_select="audio_frame_queue mdct15"
2574 png_decoder_deps="zlib"
2575 png_encoder_deps="zlib"
2576 png_encoder_select="llvidencdsp"
2577 prores_decoder_select="blockdsp idctdsp"
2578 prores_encoder_select="fdctdsp"
2579 qcelp_decoder_select="lsp"
2580 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2581 ra_144_decoder_select="audiodsp"
2582 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2583 ralf_decoder_select="golomb"
2584 rawvideo_decoder_select="bswapdsp"
2585 rscc_decoder_deps="zlib"
2586 rtjpeg_decoder_select="me_cmp"
2587 rv10_decoder_select="h263_decoder"
2588 rv10_encoder_select="h263_encoder"
2589 rv20_decoder_select="h263_decoder"
2590 rv20_encoder_select="h263_encoder"
2591 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2592 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2593 screenpresso_decoder_deps="zlib"
2594 shorten_decoder_select="bswapdsp"
2595 sipr_decoder_select="lsp"
2596 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2597 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2598 sonic_decoder_select="golomb rangecoder"
2599 sonic_encoder_select="golomb rangecoder"
2600 sonic_ls_encoder_select="golomb rangecoder"
2601 sp5x_decoder_select="mjpeg_decoder"
2602 srgc_decoder_deps="zlib"
2603 svq1_decoder_select="hpeldsp"
2604 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2605 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2606 svq3_decoder_suggest="zlib"
2607 tak_decoder_select="audiodsp"
2608 tdsc_decoder_deps="zlib"
2609 tdsc_decoder_select="mjpeg_decoder"
2610 theora_decoder_select="vp3_decoder"
2611 thp_decoder_select="mjpeg_decoder"
2612 tiff_decoder_suggest="zlib lzma"
2613 tiff_encoder_suggest="zlib"
2614 truehd_decoder_select="mlp_parser"
2615 truehd_encoder_select="lpc"
2616 truemotion2_decoder_select="bswapdsp"
2617 truespeech_decoder_select="bswapdsp"
2618 tscc_decoder_deps="zlib"
2619 twinvq_decoder_select="mdct lsp sinewin"
2620 txd_decoder_select="texturedsp"
2621 utvideo_decoder_select="bswapdsp llviddsp"
2622 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2623 vble_decoder_select="llviddsp"
2624 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2625 vc1image_decoder_select="vc1_decoder"
2626 vorbis_decoder_select="mdct"
2627 vorbis_encoder_select="mdct"
2628 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2629 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2630 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2631 vp6a_decoder_select="vp6_decoder"
2632 vp6f_decoder_select="vp6_decoder"
2633 vp7_decoder_select="h264pred videodsp vp8dsp"
2634 vp8_decoder_select="h264pred videodsp vp8dsp"
2635 vp9_decoder_select="videodsp vp9_parser"
2636 webp_decoder_select="vp8_decoder exif"
2637 wmalossless_decoder_select="llauddsp"
2638 wmapro_decoder_select="mdct sinewin wma_freqs"
2639 wmav1_decoder_select="mdct sinewin wma_freqs"
2640 wmav1_encoder_select="mdct sinewin wma_freqs"
2641 wmav2_decoder_select="mdct sinewin wma_freqs"
2642 wmav2_encoder_select="mdct sinewin wma_freqs"
2643 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2644 wmv1_decoder_select="h263_decoder"
2645 wmv1_encoder_select="h263_encoder"
2646 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2647 wmv2_encoder_select="h263_encoder wmv2dsp"
2648 wmv3_decoder_select="vc1_decoder"
2649 wmv3image_decoder_select="wmv3_decoder"
2650 xma1_decoder_select="wmapro_decoder"
2651 xma2_decoder_select="wmapro_decoder"
2652 zerocodec_decoder_deps="zlib"
2653 zlib_decoder_deps="zlib"
2654 zlib_encoder_deps="zlib"
2655 zmbv_decoder_deps="zlib"
2656 zmbv_encoder_deps="zlib"
2657
2658 # hardware accelerators
2659 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2660 cuda_deps_any="libdl LoadLibrary"
2661 cuvid_deps="cuda"
2662 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2663 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2664 nvdec_deps="cuda"
2665 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2666 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2667 xvmc_deps="X11_extensions_XvMClib_h"
2668
2669 h263_vaapi_hwaccel_deps="vaapi"
2670 h263_vaapi_hwaccel_select="h263_decoder"
2671 h263_videotoolbox_hwaccel_deps="videotoolbox"
2672 h263_videotoolbox_hwaccel_select="h263_decoder"
2673 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2674 h264_d3d11va_hwaccel_deps="d3d11va"
2675 h264_d3d11va_hwaccel_select="h264_decoder"
2676 h264_d3d11va2_hwaccel_deps="d3d11va"
2677 h264_d3d11va2_hwaccel_select="h264_decoder"
2678 h264_dxva2_hwaccel_deps="dxva2"
2679 h264_dxva2_hwaccel_select="h264_decoder"
2680 h264_mediacodec_hwaccel_deps="mediacodec"
2681 h264_mmal_hwaccel_deps="mmal"
2682 h264_nvdec_hwaccel_deps="nvdec"
2683 h264_nvdec_hwaccel_select="h264_decoder"
2684 h264_qsv_hwaccel_deps="libmfx"
2685 h264_vaapi_hwaccel_deps="vaapi"
2686 h264_vaapi_hwaccel_select="h264_decoder"
2687 h264_vdpau_hwaccel_deps="vdpau"
2688 h264_vdpau_hwaccel_select="h264_decoder"
2689 h264_videotoolbox_hwaccel_deps="videotoolbox"
2690 h264_videotoolbox_hwaccel_select="h264_decoder"
2691 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2692 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2693 hevc_d3d11va_hwaccel_select="hevc_decoder"
2694 hevc_mediacodec_hwaccel_deps="mediacodec"
2695 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2696 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2697 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2698 hevc_dxva2_hwaccel_select="hevc_decoder"
2699 hevc_nvdec_hwaccel_deps="nvdec"
2700 hevc_nvdec_hwaccel_select="hevc_decoder"
2701 hevc_qsv_hwaccel_deps="libmfx"
2702 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2703 hevc_vaapi_hwaccel_select="hevc_decoder"
2704 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2705 hevc_vdpau_hwaccel_select="hevc_decoder"
2706 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2707 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2708 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2709 mpeg_xvmc_hwaccel_deps="xvmc"
2710 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2711 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2712 mpeg1_nvdec_hwaccel_deps="nvdec"
2713 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2714 mpeg1_vdpau_hwaccel_deps="vdpau"
2715 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2716 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2717 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2718 mpeg1_xvmc_hwaccel_deps="xvmc"
2719 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2720 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2721 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2722 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2724 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_dxva2_hwaccel_deps="dxva2"
2726 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2728 mpeg2_mmal_hwaccel_deps="mmal"
2729 mpeg2_nvdec_hwaccel_deps="nvdec"
2730 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_qsv_hwaccel_deps="libmfx"
2732 mpeg2_vaapi_hwaccel_deps="vaapi"
2733 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2734 mpeg2_vdpau_hwaccel_deps="vdpau"
2735 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2736 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2737 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2738 mpeg2_xvmc_hwaccel_deps="xvmc"
2739 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2740 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2741 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2742 mpeg4_mmal_hwaccel_deps="mmal"
2743 mpeg4_nvdec_hwaccel_deps="nvdec"
2744 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2745 mpeg4_vaapi_hwaccel_deps="vaapi"
2746 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2747 mpeg4_vdpau_hwaccel_deps="vdpau"
2748 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2749 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2750 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2751 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2752 vc1_d3d11va_hwaccel_deps="d3d11va"
2753 vc1_d3d11va_hwaccel_select="vc1_decoder"
2754 vc1_d3d11va2_hwaccel_deps="d3d11va"
2755 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2756 vc1_dxva2_hwaccel_deps="dxva2"
2757 vc1_dxva2_hwaccel_select="vc1_decoder"
2758 vc1_mmal_hwaccel_deps="mmal"
2759 vc1_nvdec_hwaccel_deps="nvdec"
2760 vc1_nvdec_hwaccel_select="vc1_decoder"
2761 vc1_qsv_hwaccel_deps="libmfx"
2762 vc1_vaapi_hwaccel_deps="vaapi"
2763 vc1_vaapi_hwaccel_select="vc1_decoder"
2764 vc1_vdpau_hwaccel_deps="vdpau"
2765 vc1_vdpau_hwaccel_select="vc1_decoder"
2766 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2767 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2768 vp8_mediacodec_hwaccel_deps="mediacodec"
2769 vp8_qsv_hwaccel_deps="libmfx"
2770 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2771 vp9_d3d11va_hwaccel_select="vp9_decoder"
2772 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2773 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2774 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2775 vp9_dxva2_hwaccel_select="vp9_decoder"
2776 vp9_mediacodec_hwaccel_deps="mediacodec"
2777 vp9_nvdec_hwaccel_deps="nvdec"
2778 vp9_nvdec_hwaccel_select="vp9_decoder"
2779 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2780 vp9_vaapi_hwaccel_select="vp9_decoder"
2781 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2782 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2783 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2784 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2785 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2786 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2787
2788 # hardware-accelerated codecs
2789 omx_deps="libdl pthreads"
2790 omx_rpi_select="omx"
2791 qsv_deps="libmfx"
2792 qsvdec_select="qsv"
2793 qsvenc_select="qsv"
2794 qsvvpp_select="qsv"
2795 vaapi_encode_deps="vaapi"
2796 v4l2_m2m_deps_any="linux_videodev2_h"
2797
2798 hwupload_cuda_filter_deps="cuda"
2799 scale_npp_filter_deps="cuda libnpp"
2800 scale_cuda_filter_deps="cuda_sdk"
2801 thumbnail_cuda_filter_deps="cuda_sdk"
2802
2803 nvenc_deps="cuda"
2804 nvenc_deps_any="libdl LoadLibrary"
2805 nvenc_encoder_deps="nvenc"
2806
2807 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2808 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2809 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2810 h264_cuvid_decoder_deps="cuvid"
2811 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2812 h264_mediacodec_decoder_deps="mediacodec"
2813 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2814 h264_mmal_decoder_deps="mmal"
2815 h264_nvenc_encoder_deps="nvenc"
2816 h264_omx_encoder_deps="omx"
2817 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2818 h264_qsv_encoder_select="qsvenc"
2819 h264_rkmpp_decoder_deps="rkmpp"
2820 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2821 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2822 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2823 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2824 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2825 hevc_cuvid_decoder_deps="cuvid"
2826 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2827 hevc_mediacodec_decoder_deps="mediacodec"
2828 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2829 hevc_nvenc_encoder_deps="nvenc"
2830 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2831 hevc_qsv_encoder_select="hevcparse qsvenc"
2832 hevc_rkmpp_decoder_deps="rkmpp"
2833 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2834 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2835 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2836 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2837 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2838 mjpeg_cuvid_decoder_deps="cuvid"
2839 mjpeg_qsv_encoder_deps="libmfx"
2840 mjpeg_qsv_encoder_select="qsvenc"
2841 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2842 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2843 mpeg1_cuvid_decoder_deps="cuvid"
2844 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2845 mpeg2_crystalhd_decoder_select="crystalhd"
2846 mpeg2_cuvid_decoder_deps="cuvid"
2847 mpeg2_mmal_decoder_deps="mmal"
2848 mpeg2_mediacodec_decoder_deps="mediacodec"
2849 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2850 mpeg2_qsv_encoder_select="qsvenc"
2851 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2852 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2853 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2854 mpeg4_crystalhd_decoder_select="crystalhd"
2855 mpeg4_cuvid_decoder_deps="cuvid"
2856 mpeg4_mediacodec_decoder_deps="mediacodec"
2857 mpeg4_mmal_decoder_deps="mmal"
2858 mpeg4_omx_encoder_deps="omx"
2859 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2860 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2861 msmpeg4_crystalhd_decoder_select="crystalhd"
2862 nvenc_h264_encoder_select="h264_nvenc_encoder"
2863 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2864 vc1_crystalhd_decoder_select="crystalhd"
2865 vc1_cuvid_decoder_deps="cuvid"
2866 vc1_mmal_decoder_deps="mmal"
2867 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2868 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2869 vp8_cuvid_decoder_deps="cuvid"
2870 vp8_mediacodec_decoder_deps="mediacodec"
2871 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2872 vp8_rkmpp_decoder_deps="rkmpp"
2873 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2874 vp8_vaapi_encoder_select="vaapi_encode"
2875 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2876 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2877 vp9_cuvid_decoder_deps="cuvid"
2878 vp9_mediacodec_decoder_deps="mediacodec"
2879 vp9_rkmpp_decoder_deps="rkmpp"
2880 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2881 vp9_vaapi_encoder_select="vaapi_encode"
2882 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2883 wmv3_crystalhd_decoder_select="crystalhd"
2884
2885 # parsers
2886 aac_parser_select="adts_header"
2887 h264_parser_select="golomb h264dsp h264parse"
2888 hevc_parser_select="hevcparse"
2889 mpegaudio_parser_select="mpegaudioheader"
2890 mpegvideo_parser_select="mpegvideo"
2891 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2892 vc1_parser_select="vc1dsp"
2893
2894 # bitstream_filters
2895 aac_adtstoasc_bsf_select="adts_header"
2896 h264_metadata_bsf_select="cbs_h264"
2897 h264_redundant_pps_bsf_select="cbs_h264"
2898 hevc_metadata_bsf_select="cbs_h265"
2899 mjpeg2jpeg_bsf_select="jpegtables"
2900 mpeg2_metadata_bsf_select="cbs_mpeg2"
2901 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2902
2903 # external libraries
2904 aac_at_decoder_deps="audiotoolbox"
2905 ac3_at_decoder_deps="audiotoolbox"
2906 ac3_at_decoder_select="ac3_parser"
2907 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2908 alac_at_decoder_deps="audiotoolbox"
2909 amr_nb_at_decoder_deps="audiotoolbox"
2910 avisynth_deps_any="libdl LoadLibrary"
2911 avisynth_demuxer_deps="avisynth"
2912 avisynth_demuxer_select="riffdec"
2913 eac3_at_decoder_deps="audiotoolbox"
2914 eac3_at_decoder_select="ac3_parser"
2915 gsm_ms_at_decoder_deps="audiotoolbox"
2916 ilbc_at_decoder_deps="audiotoolbox"
2917 mp1_at_decoder_deps="audiotoolbox"
2918 mp2_at_decoder_deps="audiotoolbox"
2919 mp3_at_decoder_deps="audiotoolbox"
2920 mp1_at_decoder_select="mpegaudioheader"
2921 mp2_at_decoder_select="mpegaudioheader"
2922 mp3_at_decoder_select="mpegaudioheader"
2923 pcm_alaw_at_decoder_deps="audiotoolbox"
2924 pcm_mulaw_at_decoder_deps="audiotoolbox"
2925 qdmc_at_decoder_deps="audiotoolbox"
2926 qdm2_at_decoder_deps="audiotoolbox"
2927 aac_at_encoder_deps="audiotoolbox"
2928 aac_at_encoder_select="audio_frame_queue"
2929 alac_at_encoder_deps="audiotoolbox"
2930 alac_at_encoder_select="audio_frame_queue"
2931 ilbc_at_encoder_deps="audiotoolbox"
2932 ilbc_at_encoder_select="audio_frame_queue"
2933 pcm_alaw_at_encoder_deps="audiotoolbox"
2934 pcm_alaw_at_encoder_select="audio_frame_queue"
2935 pcm_mulaw_at_encoder_deps="audiotoolbox"
2936 pcm_mulaw_at_encoder_select="audio_frame_queue"
2937 chromaprint_muxer_deps="chromaprint"
2938 h264_videotoolbox_encoder_deps="pthreads"
2939 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2940 hevc_videotoolbox_encoder_deps="pthreads"
2941 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2942 libcelt_decoder_deps="libcelt"
2943 libfdk_aac_decoder_deps="libfdk_aac"
2944 libfdk_aac_encoder_deps="libfdk_aac"
2945 libfdk_aac_encoder_select="audio_frame_queue"
2946 libgme_demuxer_deps="libgme"
2947 libgsm_decoder_deps="libgsm"
2948 libgsm_encoder_deps="libgsm"
2949 libgsm_ms_decoder_deps="libgsm"
2950 libgsm_ms_encoder_deps="libgsm"
2951 libilbc_decoder_deps="libilbc"
2952 libilbc_encoder_deps="libilbc"
2953 libkvazaar_encoder_deps="libkvazaar"
2954 libmodplug_demuxer_deps="libmodplug"
2955 libmp3lame_encoder_deps="libmp3lame"
2956 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2957 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2958 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2959 libopencore_amrnb_encoder_select="audio_frame_queue"
2960 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2961 libopenh264_decoder_deps="libopenh264"
2962 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2963 libopenh264_encoder_deps="libopenh264"
2964 libopenjpeg_decoder_deps="libopenjpeg"
2965 libopenjpeg_encoder_deps="libopenjpeg"
2966 libopenmpt_demuxer_deps="libopenmpt"
2967 libopus_decoder_deps="libopus"
2968 libopus_encoder_deps="libopus"
2969 libopus_encoder_select="audio_frame_queue"
2970 librsvg_decoder_deps="librsvg"
2971 libshine_encoder_deps="libshine"
2972 libshine_encoder_select="audio_frame_queue"
2973 libspeex_decoder_deps="libspeex"
2974 libspeex_encoder_deps="libspeex"
2975 libspeex_encoder_select="audio_frame_queue"
2976 libtheora_encoder_deps="libtheora"
2977 libtwolame_encoder_deps="libtwolame"
2978 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2979 libvorbis_decoder_deps="libvorbis"
2980 libvorbis_encoder_deps="libvorbis libvorbisenc"
2981 libvorbis_encoder_select="audio_frame_queue"
2982 libvpx_vp8_decoder_deps="libvpx"
2983 libvpx_vp8_encoder_deps="libvpx"
2984 libvpx_vp9_decoder_deps="libvpx"
2985 libvpx_vp9_encoder_deps="libvpx"
2986 libwavpack_encoder_deps="libwavpack"
2987 libwavpack_encoder_select="audio_frame_queue"
2988 libwebp_encoder_deps="libwebp"
2989 libwebp_anim_encoder_deps="libwebp"
2990 libx262_encoder_deps="libx262"
2991 libx264_encoder_deps="libx264"
2992 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2993 libx264rgb_encoder_select="libx264_encoder"
2994 libx265_encoder_deps="libx265"
2995 libxavs_encoder_deps="libxavs"
2996 libxvid_encoder_deps="libxvid"
2997 libzvbi_teletext_decoder_deps="libzvbi"
2998 videotoolbox_suggest="coreservices"
2999 videotoolbox_deps="corefoundation coremedia corevideo"
3000 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3001
3002 # demuxers / muxers
3003 ac3_demuxer_select="ac3_parser"
3004 aiff_muxer_select="iso_media"
3005 asf_demuxer_select="riffdec"
3006 asf_o_demuxer_select="riffdec"
3007 asf_muxer_select="riffenc"
3008 asf_stream_muxer_select="asf_muxer"
3009 avi_demuxer_select="iso_media riffdec exif"
3010 avi_muxer_select="riffenc"
3011 caf_demuxer_select="iso_media riffdec"
3012 caf_muxer_select="iso_media"
3013 dash_muxer_select="mp4_muxer"
3014 dash_demuxer_deps="libxml2"
3015 dirac_demuxer_select="dirac_parser"
3016 dts_demuxer_select="dca_parser"
3017 dtshd_demuxer_select="dca_parser"
3018 dv_demuxer_select="dvprofile"
3019 dv_muxer_select="dvprofile"
3020 dxa_demuxer_select="riffdec"
3021 eac3_demuxer_select="ac3_parser"
3022 f4v_muxer_select="mov_muxer"
3023 fifo_muxer_deps="threads"
3024 flac_demuxer_select="flac_parser"
3025 hds_muxer_select="flv_muxer"
3026 hls_muxer_select="mpegts_muxer"
3027 hls_muxer_suggest="gcrypt openssl"
3028 image2_alias_pix_demuxer_select="image2_demuxer"
3029 image2_brender_pix_demuxer_select="image2_demuxer"
3030 ipod_muxer_select="mov_muxer"
3031 ismv_muxer_select="mov_muxer"
3032 matroska_audio_muxer_select="matroska_muxer"
3033 matroska_demuxer_select="iso_media riffdec"
3034 matroska_demuxer_suggest="bzlib lzo zlib"
3035 matroska_muxer_select="iso_media riffenc"
3036 mmf_muxer_select="riffenc"
3037 mov_demuxer_select="iso_media riffdec"
3038 mov_demuxer_suggest="zlib"
3039 mov_muxer_select="iso_media riffenc rtpenc_chain"
3040 mp3_demuxer_select="mpegaudio_parser"
3041 mp3_muxer_select="mpegaudioheader"
3042 mp4_muxer_select="mov_muxer"
3043 mpegts_demuxer_select="iso_media"
3044 mpegts_muxer_select="adts_muxer latm_muxer"
3045 mpegtsraw_demuxer_select="mpegts_demuxer"
3046 mxf_d10_muxer_select="mxf_muxer"
3047 mxf_opatom_muxer_select="mxf_muxer"
3048 nut_muxer_select="riffenc"
3049 nuv_demuxer_select="riffdec"
3050 oga_muxer_select="ogg_muxer"
3051 ogg_demuxer_select="dirac_parse"
3052 ogv_muxer_select="ogg_muxer"
3053 opus_muxer_select="ogg_muxer"
3054 psp_muxer_select="mov_muxer"
3055 rtp_demuxer_select="sdp_demuxer"
3056 rtp_muxer_select="golomb"
3057 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3058 rtsp_demuxer_select="http_protocol rtpdec"
3059 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3060 sap_demuxer_select="sdp_demuxer"
3061 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3062 sdp_demuxer_select="rtpdec"
3063 smoothstreaming_muxer_select="ismv_muxer"
3064 spdif_demuxer_select="adts_header"
3065 spdif_muxer_select="adts_header"
3066 spx_muxer_select="ogg_muxer"
3067 swf_demuxer_suggest="zlib"
3068 tak_demuxer_select="tak_parser"
3069 tg2_muxer_select="mov_muxer"
3070 tgp_muxer_select="mov_muxer"
3071 vobsub_demuxer_select="mpegps_demuxer"
3072 w64_demuxer_select="wav_demuxer"
3073 w64_muxer_select="wav_muxer"
3074 wav_demuxer_select="riffdec"
3075 wav_muxer_select="riffenc"
3076 webm_muxer_select="iso_media riffenc"
3077 webm_dash_manifest_demuxer_select="matroska_demuxer"
3078 wtv_demuxer_select="mpegts_demuxer riffdec"
3079 wtv_muxer_select="mpegts_muxer riffenc"
3080 xmv_demuxer_select="riffdec"
3081 xwma_demuxer_select="riffdec"
3082
3083 # indevs / outdevs
3084 alsa_indev_deps="alsa"
3085 alsa_outdev_deps="alsa"
3086 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3087 avfoundation_indev_suggest="coregraphics applicationservices"
3088 avfoundation_indev_extralibs="-framework Foundation"
3089 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3090 caca_outdev_deps="libcaca"
3091 decklink_deps_any="libdl LoadLibrary"
3092 decklink_indev_deps="decklink threads"
3093 decklink_indev_extralibs="-lstdc++"
3094 decklink_outdev_deps="decklink threads"
3095 decklink_outdev_extralibs="-lstdc++"
3096 libndi_newtek_indev_deps="libndi_newtek"
3097 libndi_newtek_indev_extralibs="-lndi"
3098 libndi_newtek_outdev_deps="libndi_newtek"
3099 libndi_newtek_outdev_extralibs="-lndi"
3100 dshow_indev_deps="IBaseFilter"
3101 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3102 fbdev_indev_deps="linux_fb_h"
3103 fbdev_outdev_deps="linux_fb_h"
3104 gdigrab_indev_deps="CreateDIBSection"
3105 gdigrab_indev_extralibs="-lgdi32"
3106 gdigrab_indev_select="bmp_decoder"
3107 iec61883_indev_deps="libiec61883"
3108 jack_indev_deps="libjack"
3109 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3110 kmsgrab_indev_deps="libdrm"
3111 lavfi_indev_deps="avfilter"
3112 libcdio_indev_deps="libcdio"
3113 libdc1394_indev_deps="libdc1394"
3114 openal_indev_deps="openal"
3115 opengl_outdev_deps="opengl"
3116 oss_indev_deps_any="sys_soundcard_h"
3117 oss_outdev_deps_any="sys_soundcard_h"
3118 pulse_indev_deps="libpulse"
3119 pulse_outdev_deps="libpulse"
3120 sdl2_outdev_deps="sdl2"
3121 sndio_indev_deps="sndio"
3122 sndio_outdev_deps="sndio"
3123 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3124 v4l2_indev_suggest="libv4l2"
3125 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3126 v4l2_outdev_suggest="libv4l2"
3127 vfwcap_indev_deps="vfw32 vfwcap_defines"
3128 xcbgrab_indev_deps="libxcb"
3129 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3130 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3131 xv_outdev_extralibs="-lXv -lX11 -lXext"
3132
3133 # protocols
3134 async_protocol_deps="threads"
3135 bluray_protocol_deps="libbluray"
3136 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3137 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3138 ffrtmpcrypt_protocol_select="tcp_protocol"
3139 ffrtmphttp_protocol_conflict="librtmp_protocol"
3140 ffrtmphttp_protocol_select="http_protocol"
3141 ftp_protocol_select="tcp_protocol"
3142 gopher_protocol_select="network"
3143 http_protocol_select="tcp_protocol"
3144 http_protocol_suggest="zlib"
3145 httpproxy_protocol_select="tcp_protocol"
3146 httpproxy_protocol_suggest="zlib"
3147 https_protocol_select="tls_protocol"
3148 https_protocol_suggest="zlib"
3149 icecast_protocol_select="http_protocol"
3150 librtmp_protocol_deps="librtmp"
3151 librtmpe_protocol_deps="librtmp"
3152 librtmps_protocol_deps="librtmp"
3153 librtmpt_protocol_deps="librtmp"
3154 librtmpte_protocol_deps="librtmp"
3155 libsmbclient_protocol_deps="libsmbclient gplv3"
3156 libssh_protocol_deps="libssh"
3157 mmsh_protocol_select="http_protocol"
3158 mmst_protocol_select="network"
3159 rtmp_protocol_conflict="librtmp_protocol"
3160 rtmp_protocol_select="tcp_protocol"
3161 rtmp_protocol_suggest="zlib"
3162 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3163 rtmpe_protocol_suggest="zlib"
3164 rtmps_protocol_conflict="librtmp_protocol"
3165 rtmps_protocol_select="tls_protocol"
3166 rtmps_protocol_suggest="zlib"
3167 rtmpt_protocol_select="ffrtmphttp_protocol"
3168 rtmpt_protocol_suggest="zlib"
3169 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3170 rtmpte_protocol_suggest="zlib"
3171 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3172 rtmpts_protocol_suggest="zlib"
3173 rtp_protocol_select="udp_protocol"
3174 schannel_conflict="openssl gnutls"
3175 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3176 sctp_protocol_select="network"
3177 securetransport_conflict="openssl gnutls"
3178 srtp_protocol_select="rtp_protocol srtp"
3179 tcp_protocol_select="network"
3180 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3181 tls_protocol_select="tcp_protocol"
3182 udp_protocol_select="network"
3183 udplite_protocol_select="network"
3184 unix_protocol_deps="sys_un_h"
3185 unix_protocol_select="network"
3186
3187 # filters
3188 afftfilt_filter_deps="avcodec"
3189 afftfilt_filter_select="fft"
3190 afir_filter_deps="avcodec"
3191 afir_filter_select="fft"
3192 amovie_filter_deps="avcodec avformat"
3193 aresample_filter_deps="swresample"
3194 ass_filter_deps="libass"
3195 atempo_filter_deps="avcodec"
3196 atempo_filter_select="rdft"
3197 azmq_filter_deps="libzmq"
3198 blackframe_filter_deps="gpl"
3199 boxblur_filter_deps="gpl"
3200 bs2b_filter_deps="libbs2b"
3201 colormatrix_filter_deps="gpl"
3202 coreimage_filter_deps="coreimage appkit"
3203 coreimage_filter_extralibs="-framework OpenGL"
3204 coreimagesrc_filter_deps="coreimage appkit"
3205 coreimagesrc_filter_extralibs="-framework OpenGL"
3206 cover_rect_filter_deps="avcodec avformat gpl"
3207 cropdetect_filter_deps="gpl"
3208 deinterlace_qsv_filter_deps="libmfx"
3209 deinterlace_vaapi_filter_deps="vaapi"
3210 delogo_filter_deps="gpl"
3211 deshake_filter_select="pixelutils"
3212 deshake_filter_suggest="opencl"
3213 drawtext_filter_deps="libfreetype"
3214 drawtext_filter_suggest="libfontconfig libfribidi"
3215 elbg_filter_deps="avcodec"
3216 eq_filter_deps="gpl"
3217 fftfilt_filter_deps="avcodec"
3218 fftfilt_filter_select="rdft"
3219 find_rect_filter_deps="avcodec avformat gpl"
3220 firequalizer_filter_deps="avcodec"
3221 firequalizer_filter_select="rdft"
3222 flite_filter_deps="libflite"
3223 framerate_filter_select="pixelutils"
3224 frei0r_filter_deps="frei0r libdl"
3225 frei0r_src_filter_deps="frei0r libdl"
3226 fspp_filter_deps="gpl"
3227 geq_filter_deps="gpl"
3228 histeq_filter_deps="gpl"
3229 hqdn3d_filter_deps="gpl"
3230 interlace_filter_deps="gpl"
3231 kerndeint_filter_deps="gpl"
3232 ladspa_filter_deps="ladspa libdl"
3233 mcdeint_filter_deps="avcodec gpl"
3234 movie_filter_deps="avcodec avformat"
3235 mpdecimate_filter_deps="gpl"
3236 mpdecimate_filter_select="pixelutils"
3237 mptestsrc_filter_deps="gpl"
3238 negate_filter_deps="lut_filter"
3239 nnedi_filter_deps="gpl"
3240 ocr_filter_deps="libtesseract"
3241 ocv_filter_deps="libopencv"
3242 overlay_opencl_filter_deps="opencl"
3243 overlay_qsv_filter_deps="libmfx"
3244 overlay_qsv_filter_select="qsvvpp"
3245 owdenoise_filter_deps="gpl"
3246 pan_filter_deps="swresample"
3247 perspective_filter_deps="gpl"
3248 phase_filter_deps="gpl"
3249 pp7_filter_deps="gpl"
3250 pp_filter_deps="gpl postproc"
3251 pullup_filter_deps="gpl"
3252 removelogo_filter_deps="avcodec avformat swscale"
3253 repeatfields_filter_deps="gpl"
3254 resample_filter_deps="avresample"
3255 rubberband_filter_deps="librubberband"
3256 sab_filter_deps="gpl swscale"
3257 scale2ref_filter_deps="swscale"
3258 scale_filter_deps="swscale"
3259 scale_qsv_filter_deps="libmfx"
3260 select_filter_select="pixelutils"
3261 showcqt_filter_deps="avcodec avformat swscale"
3262 showcqt_filter_suggest="libfontconfig libfreetype"
3263 showcqt_filter_select="fft"
3264 showfreqs_filter_deps="avcodec"
3265 showfreqs_filter_select="fft"
3266 showspectrum_filter_deps="avcodec"
3267 showspectrum_filter_select="fft"
3268 showspectrumpic_filter_deps="avcodec"
3269 showspectrumpic_filter_select="fft"
3270 signature_filter_deps="gpl avcodec avformat"
3271 smartblur_filter_deps="gpl swscale"
3272 sofalizer_filter_deps="libmysofa avcodec"
3273 sofalizer_filter_select="fft"
3274 spectrumsynth_filter_deps="avcodec"
3275 spectrumsynth_filter_select="fft"
3276 spp_filter_deps="gpl avcodec"
3277 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3278 stereo3d_filter_deps="gpl"
3279 subtitles_filter_deps="avformat avcodec libass"
3280 super2xsai_filter_deps="gpl"
3281 pixfmts_super2xsai_test_deps="super2xsai_filter"
3282 tinterlace_filter_deps="gpl"
3283 tinterlace_merge_test_deps="tinterlace_filter"
3284 tinterlace_pad_test_deps="tinterlace_filter"
3285 tonemap_filter_deps="const_nan"
3286 unsharp_opencl_filter_deps="opencl"
3287 uspp_filter_deps="gpl avcodec"
3288 unsharp_filter_suggest="opencl"
3289 vaguedenoiser_filter_deps="gpl"
3290 vidstabdetect_filter_deps="libvidstab"
3291 vidstabtransform_filter_deps="libvidstab"
3292 libvmaf_filter_deps="libvmaf"
3293 zmq_filter_deps="libzmq"
3294 zoompan_filter_deps="swscale"
3295 zscale_filter_deps="libzimg const_nan"
3296 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3297 vpp_qsv_filter_deps="libmfx"
3298 vpp_qsv_filter_select="qsvvpp"
3299
3300 # examples
3301 avio_dir_cmd_deps="avformat avutil"
3302 avio_reading_deps="avformat avcodec avutil"
3303 decode_audio_example_deps="avcodec avutil"
3304 decode_video_example_deps="avcodec avutil"
3305 demuxing_decoding_example_deps="avcodec avformat avutil"
3306 encode_audio_example_deps="avcodec avutil"
3307 encode_video_example_deps="avcodec avutil"
3308 extract_mvs_example_deps="avcodec avformat avutil"
3309 filter_audio_example_deps="avfilter avutil"
3310 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3311 filtering_video_example_deps="avfilter avcodec avformat avutil"
3312 http_multiclient_example_deps="avformat avutil fork"
3313 hw_decode_example_deps="avcodec avformat avutil"
3314 metadata_example_deps="avformat avutil"
3315 muxing_example_deps="avcodec avformat avutil swscale"
3316 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3317 remuxing_example_deps="avcodec avformat avutil"
3318 resampling_audio_example_deps="avutil swresample"
3319 scaling_video_example_deps="avutil swscale"
3320 transcode_aac_example_deps="avcodec avformat swresample"
3321 transcoding_example_deps="avfilter avcodec avformat avutil"
3322
3323 # EXTRALIBS_LIST
3324 cpu_init_extralibs="pthreads_extralibs"
3325 cws2fws_extralibs="zlib_extralibs"
3326
3327 # libraries, in linking order
3328 avcodec_deps="avutil"
3329 avcodec_suggest="libm"
3330 avcodec_select="null_bsf"
3331 avdevice_deps="avformat avcodec avutil"
3332 avdevice_suggest="libm"
3333 avfilter_deps="avutil"
3334 avfilter_suggest="libm"
3335 avformat_deps="avcodec avutil"
3336 avformat_suggest="libm network zlib"
3337 avresample_deps="avutil"
3338 avresample_suggest="libm"
3339 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3340 postproc_deps="avutil gpl"
3341 postproc_suggest="libm"
3342 swresample_deps="avutil"
3343 swresample_suggest="libm libsoxr"
3344 swscale_deps="avutil"
3345 swscale_suggest="libm"
3346
3347 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3348 avfilter_extralibs="pthreads_extralibs"
3349 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3350
3351 # programs
3352 ffmpeg_deps="avcodec avfilter avformat swresample"
3353 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3354                null_filter
3355                trim_filter"
3356 ffmpeg_suggest="ole32 psapi shell32"
3357 ffplay_deps="avcodec avformat swscale swresample sdl2"
3358 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3359 ffplay_suggest="shell32"
3360 ffprobe_deps="avcodec avformat"
3361 ffprobe_suggest="shell32"
3362 ffserver_deps="avformat fork sarestart"
3363 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3364
3365 # documentation
3366 podpages_deps="perl"
3367 manpages_deps="perl pod2man"
3368 htmlpages_deps="perl"
3369 htmlpages_deps_any="makeinfo_html texi2html"
3370 txtpages_deps="perl makeinfo"
3371 doc_deps_any="manpages htmlpages podpages txtpages"
3372
3373 # default parameters
3374
3375 logfile="ffbuild/config.log"
3376
3377 # installation paths
3378 prefix_default="/usr/local"
3379 bindir_default='${prefix}/bin'
3380 datadir_default='${prefix}/share/ffmpeg'
3381 docdir_default='${prefix}/share/doc/ffmpeg'
3382 incdir_default='${prefix}/include'
3383 libdir_default='${prefix}/lib'
3384 mandir_default='${prefix}/share/man'
3385
3386 # toolchain
3387 ar_default="ar"
3388 cc_default="gcc"
3389 cxx_default="g++"
3390 host_cc_default="gcc"
3391 doxygen_default="doxygen"
3392 install="install"
3393 ln_s_default="ln -s -f"
3394 nm_default="nm -g"
3395 pkg_config_default=pkg-config
3396 ranlib_default="ranlib"
3397 strip_default="strip"
3398 version_script='--version-script'
3399 objformat="elf32"
3400 x86asmexe_default="nasm"
3401 windres_default="windres"
3402 nvcc_default="nvcc"
3403 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3404 striptype="direct"
3405
3406 # OS
3407 target_os_default=$(tolower $(uname -s))
3408 host_os=$target_os_default
3409
3410 # machine
3411 if test "$target_os_default" = aix; then
3412     arch_default=$(uname -p)
3413     strip_default="strip -X32_64"
3414 else
3415     arch_default=$(uname -m)
3416 fi
3417 cpu="generic"
3418 intrinsics="none"
3419
3420 # configurable options
3421 enable $PROGRAM_LIST
3422 enable $DOCUMENT_LIST
3423 enable $EXAMPLE_LIST
3424 enable $(filter_out avresample $LIBRARY_LIST)
3425 enable stripping
3426
3427 enable asm
3428 enable debug
3429 enable doc
3430 enable faan faandct faanidct
3431 enable optimizations
3432 enable runtime_cpudetect
3433 enable safe_bitstream_reader
3434 enable static
3435 enable swscale_alpha
3436 enable valgrind_backtrace
3437
3438 sws_max_filter_size_default=256
3439 set_default sws_max_filter_size
3440
3441 # internal components are enabled by default
3442 enable $EXTRALIBS_LIST
3443
3444 # Avoid external, non-system, libraries getting enabled by dependency resolution
3445 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3446
3447 # build settings
3448 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3449 LIBPREF="lib"
3450 LIBSUF=".a"
3451 FULLNAME='$(NAME)$(BUILDSUF)'
3452 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3453 SLIBPREF="lib"
3454 SLIBSUF=".so"
3455 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3456 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3457 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3458 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3459 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3460 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3461 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3462
3463 asflags_filter=echo
3464 cflags_filter=echo
3465 ldflags_filter=echo
3466
3467 AS_C='-c'
3468 AS_O='-o $@'
3469 CC_C='-c'
3470 CC_E='-E -o $@'
3471 CC_O='-o $@'
3472 CXX_C='-c'
3473 CXX_O='-o $@'
3474 OBJCC_C='-c'
3475 OBJCC_E='-E -o $@'
3476 OBJCC_O='-o $@'
3477 X86ASM_O='-o $@'
3478 LD_O='-o $@'
3479 LD_LIB='-l%'
3480 LD_PATH='-L'
3481 HOSTCC_C='-c'
3482 HOSTCC_E='-E -o $@'
3483 HOSTCC_O='-o $@'
3484 HOSTLD_O='-o $@'
3485 NVCC_C='-c'
3486 NVCC_O='-o $@'
3487
3488 host_extralibs='-lm'
3489 host_cflags_filter=echo
3490 host_ldflags_filter=echo
3491
3492 target_path='$(CURDIR)'
3493
3494 # since the object filename is not given with the -MM flag, the compiler
3495 # is only able to print the basename, and we must add the path ourselves
3496 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3497 DEPFLAGS='-MM'
3498
3499 mkdir -p ffbuild
3500
3501 # find source path
3502 if test -f configure; then
3503     source_path=.
3504 else
3505     source_path=$(cd $(dirname "$0"); pwd)
3506     case "$source_path" in
3507         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3508     esac
3509     test -e "$source_path/config.h" &&
3510         die "Out of tree builds are impossible with config.h in source dir."
3511 fi
3512
3513 for v in "$@"; do
3514     r=${v#*=}
3515     l=${v%"$r"}
3516     r=$(sh_quote "$r")
3517     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3518 done
3519
3520 find_things(){
3521     thing=$1
3522     pattern=$2
3523     file=$source_path/$3
3524     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3525 }
3526
3527 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3528 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3529 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3530 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3531 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3532 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3533 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3534 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3535 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3536
3537 find_things_extern(){
3538     thing=$1
3539     pattern=$2
3540     file=$source_path/$3
3541     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3542 }
3543
3544 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3545 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3546
3547 AVCODEC_COMPONENTS_LIST="
3548     $BSF_LIST
3549     $DECODER_LIST
3550     $ENCODER_LIST
3551     $HWACCEL_LIST
3552     $PARSER_LIST
3553 "
3554
3555 AVDEVICE_COMPONENTS_LIST="
3556     $INDEV_LIST
3557     $OUTDEV_LIST
3558 "
3559
3560 AVFILTER_COMPONENTS_LIST="
3561     $FILTER_LIST
3562 "
3563
3564 AVFORMAT_COMPONENTS_LIST="
3565     $DEMUXER_LIST
3566     $MUXER_LIST
3567     $PROTOCOL_LIST
3568 "
3569
3570 ALL_COMPONENTS="
3571     $AVCODEC_COMPONENTS_LIST
3572     $AVDEVICE_COMPONENTS_LIST
3573     $AVFILTER_COMPONENTS_LIST
3574     $AVFORMAT_COMPONENTS_LIST
3575 "
3576
3577 for n in $COMPONENT_LIST; do
3578     v=$(toupper ${n%s})_LIST
3579     eval enable \$$v
3580     eval ${n}_if_any="\$$v"
3581 done
3582
3583 enable $ARCH_EXT_LIST
3584
3585 die_unknown(){
3586     echo "Unknown option \"$1\"."
3587     echo "See $0 --help for available options."
3588     exit 1
3589 }
3590
3591 print_in_columns() {
3592     cols=$(expr $ncols / 24)
3593     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3594 }
3595
3596 show_list() {
3597     suffix=_$1
3598     shift
3599     echo $* | sed s/$suffix//g | print_in_columns
3600     exit 0
3601 }
3602
3603 rand_list(){
3604     IFS=', '
3605     set -- $*
3606     unset IFS
3607     for thing; do
3608         comp=${thing%:*}
3609         prob=${thing#$comp}
3610         prob=${prob#:}
3611         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3612         echo "prob ${prob:-0.5}"
3613         printf '%s\n' $comp
3614     done
3615 }
3616
3617 do_random(){
3618     action=$1
3619     shift
3620     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3621     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3622 }
3623
3624 for opt do
3625     optval="${opt#*=}"
3626     case "$opt" in
3627         --extra-ldflags=*)
3628             add_ldflags $optval
3629         ;;
3630         --extra-ldexeflags=*)
3631             add_ldexeflags $optval
3632         ;;
3633         --extra-ldsoflags=*)
3634             add_ldsoflags $optval
3635         ;;
3636         --extra-ldlibflags=*)
3637             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3638                  "removed in the future. Use --extra-ldsoflags instead."
3639             add_ldsoflags $optval
3640         ;;
3641         --extra-libs=*)
3642             add_extralibs $optval
3643         ;;
3644         --disable-devices)
3645             disable $INDEV_LIST $OUTDEV_LIST
3646         ;;
3647         --enable-debug=*)
3648             debuglevel="$optval"
3649         ;;
3650         --disable-programs)
3651             disable $PROGRAM_LIST
3652         ;;
3653         --disable-everything)
3654             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3655         ;;
3656         --disable-all)
3657             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3658             disable $LIBRARY_LIST $PROGRAM_LIST doc
3659             enable avutil
3660         ;;
3661         --enable-random|--disable-random)
3662             action=${opt%%-random}
3663             do_random ${action#--} $COMPONENT_LIST
3664         ;;
3665         --enable-random=*|--disable-random=*)
3666             action=${opt%%-random=*}
3667             do_random ${action#--} $optval
3668         ;;
3669         --enable-sdl)
3670             enable sdl2
3671         ;;
3672         --enable-*=*|--disable-*=*)
3673             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3674             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3675             eval list=\$$(toupper $thing)_LIST
3676             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3677             list=$(filter "$name" $list)
3678             [ "$list" = "" ] && warn "Option $opt did not match anything"
3679             $action $list
3680         ;;
3681         --enable-yasm|--disable-yasm)
3682             warn "The ${opt} option is only provided for compatibility and will be\n"\
3683                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3684             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3685         ;;
3686         --yasmexe=*)
3687             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3688                  "removed in the future. Use --x86asmexe instead."
3689             x86asmexe="$optval"
3690         ;;
3691         --enable-?*|--disable-?*)
3692             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3693             if is_in $option $COMPONENT_LIST; then
3694                 test $action = disable && action=unset
3695                 eval $action \$$(toupper ${option%s})_LIST
3696             elif is_in $option $CMDLINE_SELECT; then
3697                 $action $option
3698             else
3699                 die_unknown $opt
3700             fi
3701         ;;
3702         --list-*)
3703             NAME="${opt#--list-}"
3704             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3705             NAME=${NAME%s}
3706             eval show_list $NAME \$$(toupper $NAME)_LIST
3707         ;;
3708         --help|-h) show_help
3709         ;;
3710         --quiet|-q) quiet=yes
3711         ;;
3712         --fatal-warnings) enable fatal_warnings
3713         ;;
3714         --libfuzzer=*)
3715             libfuzzer_path="$optval"
3716         ;;
3717         *)
3718             optname="${opt%%=*}"
3719             optname="${optname#--}"
3720             optname=$(echo "$optname" | sed 's/-/_/g')
3721             if is_in $optname $CMDLINE_SET; then
3722                 eval $optname='$optval'
3723             elif is_in $optname $CMDLINE_APPEND; then
3724                 append $optname "$optval"
3725             else
3726                 die_unknown $opt
3727             fi
3728         ;;
3729     esac
3730 done
3731
3732 for e in $env; do
3733     eval "export $e"
3734 done
3735
3736 if disabled autodetect; then
3737
3738     # Unless iconv is explicitely disabled by the user, we still want to probe
3739     # for the iconv from the libc.
3740     disabled iconv || enable libc_iconv
3741
3742     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3743     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3744 fi
3745 # Mark specifically enabled, but normally autodetected libraries as requested.
3746 for lib in $AUTODETECT_LIBS; do
3747     enabled $lib && request $lib
3748 done
3749 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3750 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3751 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3752
3753 disabled logging && logfile=/dev/null
3754
3755 # command line configuration sanity checks
3756
3757 # we need to build at least one lib type
3758 if ! enabled_any static shared; then
3759     cat <<EOF
3760 At least one library type must be built.
3761 Specify --enable-static to build the static libraries or --enable-shared to
3762 build the shared libraries as well. To only build the shared libraries specify
3763 --disable-static in addition to --enable-shared.
3764 EOF
3765     exit 1
3766 fi
3767
3768 die_license_disabled() {
3769     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3770 }
3771
3772 die_license_disabled_gpl() {
3773     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3774 }
3775
3776 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3777 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3778
3779 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3780 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3781
3782 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3783
3784 enabled_all gnutls openssl &&
3785     die "GnuTLS and OpenSSL must not be enabled at the same time."
3786
3787 # Disable all the library-specific components if the library itself
3788 # is disabled, see AVCODEC_LIST and following _LIST variables.
3789
3790 disable_components(){
3791     disabled ${1} && disable $(
3792         eval components="\$$(toupper ${1})_COMPONENTS"
3793         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3794     )
3795 }
3796
3797 map 'disable_components $v' $LIBRARY_LIST
3798
3799 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3800 set >> $logfile
3801
3802 test -n "$valgrind" && toolchain="valgrind-memcheck"
3803
3804 enabled ossfuzz && {
3805     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3806     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3807 }
3808
3809 case "$toolchain" in
3810     *-asan)
3811         cc_default="${toolchain%-asan}"
3812         add_cflags  -fsanitize=address
3813         add_ldflags -fsanitize=address
3814     ;;
3815     *-msan)
3816         cc_default="${toolchain%-msan}"
3817         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3818         add_ldflags -fsanitize=memory
3819     ;;
3820     *-tsan)
3821         cc_default="${toolchain%-tsan}"
3822         add_cflags  -fsanitize=thread -fPIE
3823         add_ldflags -fsanitize=thread -pie
3824         case "$toolchain" in
3825             gcc-tsan)
3826                 add_cflags  -fPIC
3827                 add_ldflags -fPIC
3828                 ;;
3829         esac
3830     ;;
3831     *-usan)
3832         cc_default="${toolchain%-usan}"
3833         add_cflags  -fsanitize=undefined
3834         add_ldflags -fsanitize=undefined
3835     ;;
3836     valgrind-*)
3837         target_exec_default="valgrind"
3838         case "$toolchain" in
3839             valgrind-massif)
3840                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3841                 ;;
3842             valgrind-memcheck)
3843                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3844                 ;;
3845         esac
3846     ;;
3847     msvc)
3848         # Check whether the current MSVC version needs the C99 converter.
3849         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3850         # support enough of C99 to build ffmpeg. Default to the new
3851         # behaviour if the regexp was unable to match anything, since this
3852         # successfully parses the version number of existing supported
3853         # versions that require the converter (MSVC 2010 and 2012).
3854         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3855         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3856             cc_default="cl"
3857             cxx_default="cl"
3858         else
3859             cc_default="c99wrap cl"
3860             cxx_default="c99wrap cl"
3861         fi
3862         ld_default="$source_path/compat/windows/mslink"
3863         nm_default="dumpbin -symbols"
3864         ar_default="lib"
3865         case "$arch" in
3866         aarch64|arm64)
3867             as_default="armasm64"
3868             ;;
3869         arm*)
3870             as_default="armasm"
3871             ;;
3872         esac
3873         target_os_default="win32"
3874         # Use a relative path for TMPDIR. This makes sure all the
3875         # ffconf temp files are written with a relative path, avoiding
3876         # issues with msys/win32 path conversion for MSVC parameters
3877         # such as -Fo<file> or -out:<file>.
3878         TMPDIR=.
3879     ;;
3880     icl)
3881         cc_default="icl"
3882         ld_default="xilink"
3883         nm_default="dumpbin -symbols"
3884         ar_default="xilib"
3885         target_os_default="win32"
3886         TMPDIR=.
3887     ;;
3888     gcov)
3889         add_cflags  -fprofile-arcs -ftest-coverage
3890         add_ldflags -fprofile-arcs -ftest-coverage
3891     ;;
3892     llvm-cov)
3893         add_cflags -fprofile-arcs -ftest-coverage
3894         add_ldflags --coverage
3895     ;;
3896     hardened)
3897         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3898         add_cflags   -fno-strict-overflow -fstack-protector-all
3899         add_ldflags  -Wl,-z,relro -Wl,-z,now
3900         add_cflags   -fPIE
3901         add_ldexeflags -fPIE -pie
3902     ;;
3903     ?*)
3904         die "Unknown toolchain $toolchain"
3905     ;;
3906 esac
3907
3908 if test -n "$cross_prefix"; then
3909     test -n "$arch" && test -n "$target_os" ||
3910         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3911     enable cross_compile
3912 fi
3913
3914 ar_default="${cross_prefix}${ar_default}"
3915 cc_default="${cross_prefix}${cc_default}"
3916 cxx_default="${cross_prefix}${cxx_default}"
3917 nm_default="${cross_prefix}${nm_default}"
3918 pkg_config_default="${cross_prefix}${pkg_config_default}"
3919 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3920     ranlib_default="${cross_prefix}${ranlib_default} -D"
3921 else
3922     ranlib_default="${cross_prefix}${ranlib_default}"
3923 fi
3924 strip_default="${cross_prefix}${strip_default}"
3925 windres_default="${cross_prefix}${windres_default}"
3926
3927 sysinclude_default="${sysroot}/usr/include"
3928
3929 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3930     target_exec target_os x86asmexe nvcc
3931 enabled cross_compile || host_cc_default=$cc
3932 set_default host_cc
3933
3934 pkg_config_fail_message=""
3935 if ! $pkg_config --version >/dev/null 2>&1; then
3936     warn "$pkg_config not found, library detection may fail."
3937     pkg_config=false
3938 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3939     pkg_config_fail_message="
3940 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3941 fi
3942
3943 if test $doxygen != $doxygen_default && \
3944   ! $doxygen --version >/dev/null 2>&1; then
3945     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3946 fi
3947
3948 exesuf() {
3949     case $1 in
3950         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3951     esac
3952 }
3953
3954 EXESUF=$(exesuf $target_os)
3955 HOSTEXESUF=$(exesuf $host_os)
3956
3957 # set temporary file name
3958 : ${TMPDIR:=$TEMPDIR}
3959 : ${TMPDIR:=$TMP}
3960 : ${TMPDIR:=/tmp}
3961
3962 if [ -n "$tempprefix" ] ; then
3963     mktemp(){
3964         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3965         echo "$tmpname"
3966         mkdir "$tmpname"
3967     }
3968 elif ! check_cmd mktemp -u XXXXXX; then
3969     # simple replacement for missing mktemp
3970     # NOT SAFE FOR GENERAL USE
3971     mktemp(){
3972         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3973         echo "$tmpname"
3974         mkdir "$tmpname"
3975     }
3976 fi
3977
3978 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3979     die "Unable to create temporary directory in $TMPDIR."
3980
3981 tmpfile(){
3982     tmp="${FFTMPDIR}/test"$2
3983     (set -C; exec > $tmp) 2> /dev/null ||
3984         die "Unable to create temporary file in $FFTMPDIR."
3985     eval $1=$tmp
3986 }
3987
3988 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3989 trap 'exit 2' INT
3990
3991 tmpfile TMPASM .asm
3992 tmpfile TMPC   .c
3993 tmpfile TMPCPP .cpp
3994 tmpfile TMPE   $EXESUF
3995 tmpfile TMPH   .h
3996 tmpfile TMPM   .m
3997 tmpfile TMPO   .o
3998 tmpfile TMPS   .S
3999 tmpfile TMPSH  .sh
4000 tmpfile TMPV   .ver
4001
4002 unset -f mktemp
4003
4004 chmod +x $TMPE
4005
4006 # make sure we can execute files in $TMPDIR
4007 cat > $TMPSH 2>> $logfile <<EOF
4008 #! /bin/sh
4009 EOF
4010 chmod +x $TMPSH >> $logfile 2>&1
4011 if ! $TMPSH >> $logfile 2>&1; then
4012     cat <<EOF
4013 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4014 variable to another directory and make sure that it is not mounted noexec.
4015 EOF
4016     die "Sanity test failed."
4017 fi
4018
4019 armasm_flags(){
4020     for flag; do
4021         case $flag in
4022             # Filter out MSVC cl.exe options from cflags that shouldn't
4023             # be passed to gas-preprocessor
4024             -M[TD]*)                                            ;;
4025             *)                  echo $flag                      ;;
4026         esac
4027    done
4028 }
4029
4030 cparser_flags(){
4031     for flag; do
4032         case $flag in
4033             -Wno-switch)             echo -Wno-switch-enum ;;
4034             -Wno-format-zero-length) ;;
4035             -Wdisabled-optimization) ;;
4036             -Wno-pointer-sign)       echo -Wno-other ;;
4037             *)                       echo $flag ;;
4038         esac
4039     done
4040 }
4041
4042 msvc_common_flags(){
4043     for flag; do
4044         case $flag in
4045             # In addition to specifying certain flags under the compiler
4046             # specific filters, they must be specified here as well or else the
4047             # generic catch all at the bottom will print the original flag.
4048             -Wall)                ;;
4049             -Wextra)              ;;
4050             -std=c99)             ;;
4051             # Common flags
4052             -fomit-frame-pointer) ;;
4053             -g)                   echo -Z7 ;;
4054             -fno-math-errno)      ;;
4055             -fno-common)          ;;
4056             -fno-signed-zeros)    ;;
4057             -fPIC)                ;;
4058             -mthumb)              ;;
4059             -march=*)             ;;
4060             -lz)                  echo zlib.lib ;;
4061             -lx264)               echo libx264.lib ;;
4062             -lstdc++)             ;;
4063             -l*)                  echo ${flag#-l}.lib ;;
4064             -LARGEADDRESSAWARE)   echo $flag ;;
4065             -L*)                  echo -libpath:${flag#-L} ;;
4066             *)                    echo $flag ;;
4067         esac
4068     done
4069 }
4070
4071 msvc_flags(){
4072     msvc_common_flags "$@"
4073     for flag; do
4074         case $flag in
4075             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4076                                        -wd4554 ;;
4077             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4078                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4079                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4080                                        -wd4307 \
4081                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4082         esac
4083     done
4084 }
4085
4086 icl_flags(){
4087     msvc_common_flags "$@"
4088     for flag; do
4089         case $flag in
4090             # Despite what Intel's documentation says -Wall, which is supported
4091             # on Windows, does enable remarks so disable them here.
4092             -Wall)                echo $flag -Qdiag-disable:remark ;;
4093             -std=c99)             echo -Qstd=c99 ;;
4094             -flto)                echo -ipo ;;
4095         esac
4096     done
4097 }
4098
4099 icc_flags(){
4100     for flag; do
4101         case $flag in
4102             -flto)                echo -ipo ;;
4103             *)                    echo $flag ;;
4104         esac
4105     done
4106 }
4107
4108 suncc_flags(){
4109     for flag; do
4110         case $flag in
4111             -march=*|-mcpu=*)
4112                 case "${flag#*=}" in
4113                     native)                   echo -xtarget=native       ;;
4114                     v9|niagara)               echo -xarch=sparc          ;;
4115                     ultrasparc)               echo -xarch=sparcvis       ;;
4116                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4117                     i586|pentium)             echo -xchip=pentium        ;;
4118                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4119                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4120                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4121                     pentium4*)          echo -xtarget=pentium4           ;;
4122                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4123                     *-sse3)             echo -xarch=sse3                 ;;
4124                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4125                     bonnell)                   echo -xarch=ssse3         ;;
4126                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4127                     westmere)                  echo -xtarget=westmere    ;;
4128                     silvermont)                echo -xarch=sse4_2        ;;
4129                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4130                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4131                                                echo -xarch=avx           ;;
4132                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4133                     btver1)                    echo -xarch=amdsse4a      ;;
4134                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4135                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4136                     k8|opteron|athlon64|athlon-fx)
4137                                                echo -xarch=sse2a         ;;
4138                     athlon*)                   echo -xarch=pentium_proa  ;;
4139                 esac
4140                 ;;
4141             -std=c99)             echo -xc99              ;;
4142             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4143             -fPIC)                echo -KPIC -xcode=pic32 ;;
4144             -W*,*)                echo $flag              ;;
4145             -f*-*|-W*|-mimpure-text)                      ;;
4146             -shared)              echo -G                 ;;
4147             *)                    echo $flag              ;;
4148         esac
4149     done
4150 }
4151
4152 probe_cc(){
4153     pfx=$1
4154     _cc=$2
4155     first=$3
4156
4157     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4158     unset _ld_o _ldflags _ld_lib _ld_path
4159     unset _depflags _DEPCMD _DEPFLAGS
4160     _flags_filter=echo
4161
4162     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4163         true # no-op to avoid reading stdin in following checks
4164     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4165         _type=llvm_gcc
4166         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4167         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4168         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4169         _cflags_speed='-O3'
4170         _cflags_size='-Os'
4171     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4172         _type=gcc
4173         gcc_version=$($_cc --version | head -n1)
4174         gcc_basever=$($_cc -dumpversion)
4175         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4176         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4177         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4178         case $gcc_basever in
4179             2) ;;
4180             2.*) ;;
4181             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4182         esac
4183         if [ "$first" = true ]; then
4184             case $gcc_basever in
4185                 4.2*)
4186                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4187             esac
4188         fi
4189         _cflags_speed='-O3'
4190         _cflags_size='-Os'
4191     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4192         _type=icc
4193         _ident=$($_cc --version | head -n1)
4194         _depflags='-MMD'
4195         _cflags_speed='-O3'
4196         _cflags_size='-Os'
4197         _cflags_noopt='-O1'
4198         _flags_filter=icc_flags
4199     elif $_cc -v 2>&1 | grep -q xlc; then
4200         _type=xlc
4201         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4202         _cflags_speed='-O5'
4203         _cflags_size='-O5 -qcompact'
4204     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4205         test -d "$sysroot" || die "No valid sysroot specified."
4206         _type=armcc
4207         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4208         armcc_conf="$PWD/armcc.conf"
4209         $_cc --arm_linux_configure                 \
4210              --arm_linux_config_file="$armcc_conf" \
4211              --configure_sysroot="$sysroot"        \
4212              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4213              die "Error creating armcc configuration file."
4214         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4215         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4216         as_default="${cross_prefix}gcc"
4217         _depflags='-MMD'
4218         _cflags_speed='-O3'
4219         _cflags_size='-Os'
4220     elif $_cc -v 2>&1 | grep -q clang; then
4221         _type=clang
4222         _ident=$($_cc --version 2>/dev/null | head -n1)
4223         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4224         _cflags_speed='-O3'
4225         _cflags_size='-Oz'
4226     elif $_cc -V 2>&1 | grep -q Sun; then
4227         _type=suncc
4228         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4229         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4230         _DEPFLAGS='-xM1 -xc99'
4231         _ldflags='-std=c99'
4232         _cflags_speed='-O5'
4233         _cflags_size='-O5 -xspace'
4234         _flags_filter=suncc_flags
4235     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4236         _type=pathscale
4237         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4238         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4239         _cflags_speed='-O2'
4240         _cflags_size='-Os'
4241         _flags_filter='filter_out -Wdisabled-optimization'
4242     elif $_cc -v 2>&1 | grep -q Open64; then
4243         _type=open64
4244         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4245         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4246         _cflags_speed='-O2'
4247         _cflags_size='-Os'
4248         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4249     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4250         _type=armasm
4251         _ident=$($_cc | head -n1)
4252         # 4509: "This form of conditional instruction is deprecated"
4253         _flags="-nologo -ignore 4509"
4254         _flags_filter=armasm_flags
4255     elif $_cc 2>&1 | grep -q Intel; then
4256         _type=icl
4257         _ident=$($_cc 2>&1 | head -n1)
4258         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4259         # Not only is O3 broken on 13.x+ but it is slower on all previous
4260         # versions (tested) as well.
4261         _cflags_speed="-O2"
4262         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4263         if $_cc 2>&1 | grep -q Linker; then
4264             _ld_o='-out:$@'
4265         else
4266             _ld_o='-Fe$@'
4267         fi
4268         _cc_o='-Fo$@'
4269         _cc_e='-P'
4270         _flags_filter=icl_flags
4271         _ld_lib='lib%.a'
4272         _ld_path='-libpath:'
4273         # -Qdiag-error to make icl error when seeing certain unknown arguments
4274         _flags='-nologo -Qdiag-error:4044,10157'
4275         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4276         # with MSVC which enables it by default.
4277         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4278         disable stripping
4279     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4280         # lld can emulate multiple different linkers; in ms link.exe mode,
4281         # the -? parameter gives the help output which contains an identifyable
4282         # string, while it gives an error in other modes.
4283         _type=lld-link
4284         # The link.exe mode doesn't have a switch for getting the version,
4285         # but we can force it back to gnu mode and get the version from there.
4286         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4287         _ld_o='-out:$@'
4288         _flags_filter=msvc_flags
4289         _ld_lib='lib%.a'
4290         _ld_path='-libpath:'
4291     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4292         _type=msvc
4293         _ident=$($_cc 2>&1 | head -n1)
4294         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4295         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4296         _cflags_speed="-O2"
4297         _cflags_size="-O1"
4298         _cflags_noopt="-O1"
4299         if $_cc -nologo- 2>&1 | grep -q Linker; then
4300             _ld_o='-out:$@'
4301         else
4302             _ld_o='-Fe$@'
4303         fi
4304         _cc_o='-Fo$@'
4305         _cc_e='-P -Fi$@'
4306         _flags_filter=msvc_flags
4307         _ld_lib='lib%.a'
4308         _ld_path='-libpath:'
4309         _flags='-nologo'
4310         disable stripping
4311     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4312         _type=cparser
4313         _ident=$($_cc --version | head -n1)
4314         _depflags='-MMD'
4315         _cflags_speed='-O4'
4316         _cflags_size='-O2'
4317         _flags_filter=cparser_flags
4318     fi
4319
4320     eval ${pfx}_type=\$_type
4321     eval ${pfx}_ident=\$_ident
4322 }
4323
4324 set_ccvars(){
4325     eval ${1}_C=\${_cc_c-\${${1}_C}}
4326     eval ${1}_E=\${_cc_e-\${${1}_E}}
4327     eval ${1}_O=\${_cc_o-\${${1}_O}}
4328
4329     if [ -n "$_depflags" ]; then
4330         eval ${1}_DEPFLAGS=\$_depflags
4331     else
4332         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4333         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4334         eval DEP${1}FLAGS=\$_flags
4335     fi
4336 }
4337
4338 probe_cc cc "$cc" "true"
4339 cflags_filter=$_flags_filter
4340 cflags_speed=$_cflags_speed
4341 cflags_size=$_cflags_size
4342 cflags_noopt=$_cflags_noopt
4343 add_cflags $_flags $_cflags
4344 cc_ldflags=$_ldflags
4345 set_ccvars CC
4346 set_ccvars CXX
4347
4348 probe_cc hostcc "$host_cc"
4349 host_cflags_filter=$_flags_filter
4350 host_cflags_speed=$_cflags_speed
4351 add_host_cflags  $_flags $_cflags
4352 set_ccvars HOSTCC
4353
4354 test -n "$cc_type" && enable $cc_type ||
4355     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4356
4357 : ${as_default:=$cc}
4358 : ${objcc_default:=$cc}
4359 : ${dep_cc_default:=$cc}
4360 : ${ld_default:=$cc}
4361 : ${host_ld_default:=$host_cc}
4362 set_default ar as objcc dep_cc ld ln_s host_ld windres
4363
4364 probe_cc as "$as"
4365 asflags_filter=$_flags_filter
4366 add_asflags $_flags $_cflags
4367 set_ccvars AS
4368
4369 probe_cc objcc "$objcc"
4370 objcflags_filter=$_flags_filter
4371 add_objcflags $_flags $_cflags
4372 set_ccvars OBJC
4373
4374 probe_cc ld "$ld"
4375 ldflags_filter=$_flags_filter
4376 add_ldflags $_flags $_ldflags
4377 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4378 LD_O=${_ld_o-$LD_O}
4379 LD_LIB=${_ld_lib-$LD_LIB}
4380 LD_PATH=${_ld_path-$LD_PATH}
4381
4382 probe_cc hostld "$host_ld"
4383 host_ldflags_filter=$_flags_filter
4384 add_host_ldflags $_flags $_ldflags
4385 HOSTLD_O=${_ld_o-$HOSTLD_O}
4386
4387 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4388     probe_cc depcc "$dep_cc"
4389     CCDEP=${_DEPCMD:-$DEPCMD}
4390     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4391     DEPCCFLAGS=$_flags
4392 fi
4393
4394 if $ar 2>&1 | grep -q Microsoft; then
4395     arflags="-nologo"
4396     ar_o='-out:$@'
4397 elif $ar 2>&1 | grep -q "\[D\] "; then
4398     arflags="rcD"
4399     ar_o='$@'
4400 else
4401     arflags="rc"
4402     ar_o='$@'
4403 fi
4404
4405 add_cflags $extra_cflags
4406 add_cxxflags $extra_cxxflags
4407 add_objcflags $extra_objcflags
4408 add_asflags $extra_cflags
4409
4410 if test -n "$sysroot"; then
4411     case "$cc_type" in
4412         gcc|llvm_gcc|clang)
4413             add_cppflags --sysroot="$sysroot"
4414             add_ldflags --sysroot="$sysroot"
4415         ;;
4416     esac
4417 fi
4418
4419 if test "$cpu" = host; then
4420     enabled cross_compile &&
4421         die "--cpu=host makes no sense when cross-compiling."
4422
4423     case "$cc_type" in
4424         gcc|llvm_gcc)
4425             check_native(){
4426                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4427                 sed -n "/cc1.*$1=/{
4428                             s/.*$1=\\([^ ]*\\).*/\\1/
4429                             p
4430                             q
4431                         }" $TMPE
4432             }
4433             cpu=$(check_native -march || check_native -mcpu)
4434         ;;
4435         clang)
4436             check_native(){
4437                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4438                 sed -n "/cc1.*-target-cpu /{
4439                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4440                             p
4441                             q
4442                         }" $TMPE
4443             }
4444             cpu=$(check_native -march)
4445         ;;
4446     esac
4447
4448     test "${cpu:-host}" = host &&
4449         die "--cpu=host not supported with compiler $cc"
4450 fi
4451
4452 # Deal with common $arch aliases
4453 case "$arch" in
4454     aarch64|arm64)
4455         arch="aarch64"
4456     ;;
4457     arm*|iPad*|iPhone*)
4458         arch="arm"
4459     ;;
4460     mips*|IP*)
4461         case "$arch" in
4462         *el)
4463             add_cppflags -EL
4464             add_ldflags -EL
4465         ;;
4466         *eb)
4467             add_cppflags -EB
4468             add_ldflags -EB
4469         ;;
4470         esac
4471         arch="mips"
4472     ;;
4473     parisc*|hppa*)
4474         arch="parisc"
4475     ;;
4476     "Power Macintosh"|ppc*|powerpc*)
4477         arch="ppc"
4478     ;;
4479     s390|s390x)
4480         arch="s390"
4481     ;;
4482     sh4|sh)
4483         arch="sh4"
4484     ;;
4485     sun4*|sparc*)
4486         arch="sparc"
4487     ;;
4488     tilegx|tile-gx)
4489         arch="tilegx"
4490     ;;
4491     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4492         arch="x86"
4493     ;;
4494 esac
4495
4496 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4497 enable $arch
4498
4499 # Add processor-specific flags
4500 if enabled aarch64; then
4501
4502     case $cpu in
4503         armv*)
4504             cpuflags="-march=$cpu"
4505         ;;
4506         *)
4507             cpuflags="-mcpu=$cpu"
4508         ;;
4509     esac
4510
4511 elif enabled alpha; then
4512
4513     cpuflags="-mcpu=$cpu"
4514
4515 elif enabled arm; then
4516
4517     check_arm_arch() {
4518         check_cpp_condition stddef.h \
4519             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4520             $cpuflags
4521     }
4522
4523     probe_arm_arch() {
4524         if   check_arm_arch 4;        then echo armv4
4525         elif check_arm_arch 4T;       then echo armv4t
4526         elif check_arm_arch 5;        then echo armv5
4527         elif check_arm_arch 5E;       then echo armv5e
4528         elif check_arm_arch 5T;       then echo armv5t
4529         elif check_arm_arch 5TE;      then echo armv5te
4530         elif check_arm_arch 5TEJ;     then echo armv5te
4531         elif check_arm_arch 6;        then echo armv6
4532         elif check_arm_arch 6J;       then echo armv6j
4533         elif check_arm_arch 6K;       then echo armv6k
4534         elif check_arm_arch 6Z;       then echo armv6z
4535         elif check_arm_arch 6ZK;      then echo armv6zk
4536         elif check_arm_arch 6T2;      then echo armv6t2
4537         elif check_arm_arch 7;        then echo armv7
4538         elif check_arm_arch 7A  7_A;  then echo armv7-a
4539         elif check_arm_arch 7S;       then echo armv7-a
4540         elif check_arm_arch 7R  7_R;  then echo armv7-r
4541         elif check_arm_arch 7M  7_M;  then echo armv7-m
4542         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4543         elif check_arm_arch 8A  8_A;  then echo armv8-a
4544         fi
4545     }
4546
4547     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4548
4549     case $cpu in
4550         armv*)
4551             cpuflags="-march=$cpu"
4552             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4553         ;;
4554         *)
4555             cpuflags="-mcpu=$cpu"
4556             case $cpu in
4557                 cortex-a*)                               subarch=armv7a  ;;
4558                 cortex-r*)                               subarch=armv7r  ;;
4559                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4560                 arm11*)                                  subarch=armv6   ;;
4561                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4562                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4563                 *)                             subarch=$(probe_arm_arch) ;;
4564             esac
4565         ;;
4566     esac
4567
4568     case "$subarch" in
4569         armv5t*)    enable fast_clz                ;;
4570         armv[6-8]*)
4571             enable fast_clz
4572             disabled fast_unaligned || enable fast_unaligned
4573             ;;
4574     esac
4575
4576 elif enabled avr32; then
4577
4578     case $cpu in
4579         ap7[02]0[0-2])
4580             subarch="avr32_ap"
4581             cpuflags="-mpart=$cpu"
4582         ;;
4583         ap)
4584             subarch="avr32_ap"
4585             cpuflags="-march=$cpu"
4586         ;;
4587         uc3[ab]*)
4588             subarch="avr32_uc"
4589             cpuflags="-mcpu=$cpu"
4590         ;;
4591         uc)
4592             subarch="avr32_uc"
4593             cpuflags="-march=$cpu"
4594         ;;
4595     esac
4596
4597 elif enabled bfin; then
4598
4599     cpuflags="-mcpu=$cpu"
4600
4601 elif enabled mips; then
4602
4603     cpuflags="-march=$cpu"
4604
4605     if [ "$cpu" != "generic" ]; then
4606         disable mips32r2
4607         disable mips32r5
4608         disable mips64r2
4609         disable mips32r6
4610         disable mips64r6
4611         disable loongson2
4612         disable loongson3
4613
4614         case $cpu in
4615             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4616                 enable mips32r2
4617                 disable msa
4618             ;;
4619             p5600|i6400|p6600)
4620                 disable mipsdsp
4621                 disable mipsdspr2
4622             ;;
4623             loongson*)
4624                 enable loongson2
4625                 enable loongson3
4626                 enable local_aligned
4627                 enable simd_align_16
4628                 enable fast_64bit
4629                 enable fast_clz
4630                 enable fast_cmov
4631                 enable fast_unaligned
4632                 disable aligned_stack
4633                 disable mipsfpu
4634                 disable mipsdsp
4635                 disable mipsdspr2
4636                 case $cpu in
4637                     loongson3*)
4638                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4639                     ;;
4640                     loongson2e)
4641                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4642                     ;;
4643                     loongson2f)
4644                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4645                     ;;
4646                 esac
4647             ;;
4648             *)
4649                 # Unknown CPU. Disable everything.
4650                 warn "unknown CPU. Disabling all MIPS optimizations."
4651                 disable mipsfpu
4652                 disable mipsdsp
4653                 disable mipsdspr2
4654                 disable msa
4655                 disable mmi
4656             ;;
4657         esac
4658
4659         case $cpu in
4660             24kc)
4661                 disable mipsfpu
4662                 disable mipsdsp
4663                 disable mipsdspr2
4664             ;;
4665             24kf*)
4666                 disable mipsdsp
4667                 disable mipsdspr2
4668             ;;
4669             24kec|34kc|1004kc)
4670                 disable mipsfpu
4671                 disable mipsdspr2
4672             ;;
4673             24kef*|34kf*|1004kf*)
4674                 disable mipsdspr2
4675             ;;
4676             74kc)
4677                 disable mipsfpu
4678             ;;
4679             p5600)
4680                 enable mips32r5
4681                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4682             ;;
4683             i6400)
4684                 enable mips64r6
4685                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4686             ;;
4687             p6600)
4688                 enable mips64r6
4689                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4690             ;;
4691         esac
4692     else
4693         # We do not disable anything. Is up to the user to disable the unwanted features.
4694         warn 'generic cpu selected'
4695     fi
4696
4697 elif enabled ppc; then
4698
4699     disable ldbrx
4700
4701     case $(tolower $cpu) in
4702         601|ppc601|powerpc601)
4703             cpuflags="-mcpu=601"
4704             disable altivec
4705         ;;
4706         603*|ppc603*|powerpc603*)
4707             cpuflags="-mcpu=603"
4708             disable altivec
4709         ;;
4710         604*|ppc604*|powerpc604*)
4711             cpuflags="-mcpu=604"
4712             disable altivec
4713         ;;
4714         g3|75*|ppc75*|powerpc75*)
4715             cpuflags="-mcpu=750"
4716             disable altivec
4717         ;;
4718         g4|745*|ppc745*|powerpc745*)
4719             cpuflags="-mcpu=7450"
4720             disable vsx
4721         ;;
4722         74*|ppc74*|powerpc74*)
4723             cpuflags="-mcpu=7400"
4724             disable vsx
4725         ;;
4726         g5|970|ppc970|powerpc970)
4727             cpuflags="-mcpu=970"
4728             disable vsx
4729         ;;
4730         power[3-6]*)
4731             cpuflags="-mcpu=$cpu"
4732             disable vsx
4733         ;;
4734         power[7-8]*)
4735             cpuflags="-mcpu=$cpu"
4736         ;;
4737         cell)
4738             cpuflags="-mcpu=cell"
4739             enable ldbrx
4740             disable vsx
4741         ;;
4742         e500mc)
4743             cpuflags="-mcpu=e500mc"
4744             disable altivec
4745         ;;
4746         e500v2)
4747             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4748             disable altivec
4749             disable dcbzl
4750         ;;
4751         e500)
4752             cpuflags="-mcpu=8540 -mhard-float"
4753             disable altivec
4754             disable dcbzl
4755         ;;
4756     esac
4757
4758 elif enabled sparc; then
4759
4760     case $cpu in
4761         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4762             cpuflags="-mcpu=$cpu"
4763         ;;
4764         ultrasparc*|niagara[234])
4765             cpuflags="-mcpu=$cpu"
4766         ;;
4767     esac
4768
4769 elif enabled x86; then
4770
4771     case $cpu in
4772         i[345]86|pentium)
4773             cpuflags="-march=$cpu"
4774             disable i686
4775             disable mmx
4776         ;;
4777         # targets that do NOT support nopl and conditional mov (cmov)
4778         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4779             cpuflags="-march=$cpu"
4780             disable i686
4781         ;;
4782         # targets that do support nopl and conditional mov (cmov)
4783         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4784         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4785         |amdfam10|barcelona|b[dt]ver*|znver*)
4786             cpuflags="-march=$cpu"
4787             enable i686
4788             enable fast_cmov
4789         ;;
4790         # targets that do support conditional mov but on which it's slow
4791         pentium4|pentium4m|prescott|nocona)
4792             cpuflags="-march=$cpu"
4793             enable i686
4794             disable fast_cmov
4795         ;;
4796     esac
4797
4798 fi
4799
4800 if [ "$cpu" != generic ]; then
4801     add_cflags  $cpuflags
4802     add_asflags $cpuflags
4803     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4804 fi
4805
4806 # compiler sanity check
4807 check_exec <<EOF
4808 int main(void){ return 0; }
4809 EOF
4810 if test "$?" != 0; then
4811     echo "$cc is unable to create an executable file."
4812     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4813         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4814         echo "Only do this if you know what cross compiling means."
4815     fi
4816     die "C compiler test failed."
4817 fi
4818
4819 add_cppflags -D_ISOC99_SOURCE
4820 add_cxxflags -D__STDC_CONSTANT_MACROS
4821 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4822
4823 # some compilers silently accept -std=c11, so we also need to check that the
4824 # version macro is defined properly
4825 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4826     add_cflags -std=c11 ||
4827     check_cflags -std=c99
4828
4829 check_cppflags -D_FILE_OFFSET_BITS=64
4830 check_cppflags -D_LARGEFILE_SOURCE
4831
4832 add_host_cppflags -D_ISOC99_SOURCE
4833 check_host_cflags -std=c99
4834 check_host_cflags -Wall
4835 check_host_cflags $host_cflags_speed
4836
4837 check_64bit(){
4838     arch32=$1
4839     arch64=$2
4840     expr=$3
4841     check_code cc "" "int test[2*($expr) - 1]" &&
4842         subarch=$arch64 || subarch=$arch32
4843     enable $subarch
4844 }
4845
4846 case "$arch" in
4847     aarch64|alpha|ia64)
4848         enabled shared && enable_weak pic
4849     ;;
4850     mips)
4851         check_64bit mips mips64 '_MIPS_SIM > 1'
4852         enabled shared && enable_weak pic
4853     ;;
4854     parisc)
4855         check_64bit parisc parisc64 'sizeof(void *) > 4'
4856         enabled shared && enable_weak pic
4857     ;;
4858     ppc)
4859         check_64bit ppc ppc64 'sizeof(void *) > 4'
4860         enabled shared && enable_weak pic
4861     ;;
4862     s390)
4863         check_64bit s390 s390x 'sizeof(void *) > 4'
4864         enabled shared && enable_weak pic
4865     ;;
4866     sparc)
4867         check_64bit sparc sparc64 'sizeof(void *) > 4'
4868         enabled shared && enable_weak pic
4869     ;;
4870     x86)
4871         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4872         # Treat x32 as x64 for now. Note it also needs pic if shared
4873         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4874             subarch=x86_64 && enable x86_64 && disable x86_32
4875         if enabled x86_64; then
4876             enabled shared && enable_weak pic
4877             objformat=elf64
4878         fi
4879     ;;
4880 esac
4881
4882 # OS specific
4883 case $target_os in
4884     aix)
4885         SHFLAGS=-shared
4886         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4887         enabled shared && add_ldflags -Wl,-brtl
4888         arflags='-Xany -r -c'
4889         ;;
4890     android)
4891         disable symver
4892         enable section_data_rel_ro
4893         SLIB_INSTALL_NAME='$(SLIBNAME)'
4894         SLIB_INSTALL_LINKS=
4895         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4896         ;;
4897     haiku)
4898         prefix_default="/boot/common"
4899         network_extralibs="-lnetwork"
4900         host_extralibs=
4901         ;;
4902     sunos)
4903         SHFLAGS='-shared -Wl,-h,$$(@F)'
4904         enabled x86 && append SHFLAGS -mimpure-text
4905         network_extralibs="-lsocket -lnsl"
4906         add_cppflags -D__EXTENSIONS__
4907         # When using suncc to build, the Solaris linker will mark
4908         # an executable with each instruction set encountered by
4909         # the Solaris assembler.  As our libraries contain their own
4910         # guards for processor-specific code, instead suppress
4911         # generation of the HWCAPS ELF section on Solaris x86 only.
4912         enabled_all suncc x86 &&
4913             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4914             add_ldflags -Wl,-M,mapfile
4915         nm_default='nm -P -g'
4916         version_script='-M'
4917         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4918         ;;
4919     netbsd)
4920         disable symver
4921         oss_indev_extralibs="-lossaudio"
4922         oss_outdev_extralibs="-lossaudio"
4923         enabled gcc || check_ldflags -Wl,-zmuldefs
4924         ;;
4925     openbsd|bitrig)
4926         disable symver
4927         SHFLAGS='-shared'
4928         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4929         SLIB_INSTALL_LINKS=
4930         oss_indev_extralibs="-lossaudio"
4931         oss_outdev_extralibs="-lossaudio"
4932         ;;
4933     dragonfly)
4934         disable symver
4935         ;;
4936     freebsd)
4937         ;;
4938     bsd/os)
4939         add_extralibs -lpoll -lgnugetopt
4940         strip="strip -d"
4941         ;;
4942     darwin)
4943         enabled ppc && add_asflags -force_cpusubtype_ALL
4944         install_name_dir_default='$(SHLIBDIR)'
4945         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4946         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4947         strip="${strip} -x"
4948         add_ldflags -Wl,-dynamic,-search_paths_first
4949         check_cflags -Werror=partial-availability
4950         SLIBSUF=".dylib"
4951         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4952         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4953         enabled x86_64 && objformat="macho64" || objformat="macho32"
4954         enabled_any pic shared x86_64 ||
4955             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4956         check_header dispatch/dispatch.h &&
4957             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4958         if test -n "$sysroot"; then
4959             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4960             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4961         fi
4962         version_script='-exported_symbols_list'
4963         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4964         ;;
4965     msys*)
4966         die "Native MSYS builds are discouraged, please use the MINGW environment."
4967         ;;
4968     mingw32*|mingw64*)
4969         target_os=mingw32
4970         if enabled shared; then
4971             # Cannot build both shared and static libs when using dllimport.
4972             disable static
4973         fi
4974         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4975         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4976         shlibdir_default="$bindir_default"
4977         SLIBPREF=""
4978         SLIBSUF=".dll"
4979         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4980         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4981         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4982         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4983         SLIB_INSTALL_LINKS=
4984         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4985         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4986         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4987         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4988         enabled x86_64 && objformat="win64" || objformat="win32"
4989         ranlib=:
4990         enable dos_paths
4991         check_ldflags -Wl,--nxcompat,--dynamicbase
4992         # Lets work around some stupidity in binutils.
4993         # ld will strip relocations from executables even though we need them
4994         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4995         # however ld then forgets what the entry point should be (oops) so we
4996         # have to manually (re)set it.
4997         if enabled x86_32; then
4998             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4999         elif enabled x86_64; then
5000             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5001             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5002             # Set image base >4GB for extra entropy with HEASLR
5003             add_ldexeflags -Wl,--image-base,0x140000000
5004             append SHFLAGS -Wl,--image-base,0x180000000
5005         fi
5006         ;;
5007     win32|win64)
5008         disable symver
5009         if enabled shared; then
5010             # Link to the import library instead of the normal static library
5011             # for shared libs.
5012             LD_LIB='%.lib'
5013             # Cannot build both shared and static libs with MSVC or icl.
5014             disable static
5015         fi
5016         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5017         shlibdir_default="$bindir_default"
5018         SLIBPREF=""
5019         SLIBSUF=".dll"
5020         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5021         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5022         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5023         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5024         SLIB_INSTALL_LINKS=
5025         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5026         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5027         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5028         enabled x86_64 && objformat="win64" || objformat="win32"
5029         ranlib=:
5030         enable dos_paths
5031         ;;
5032     cygwin*)
5033         target_os=cygwin
5034         shlibdir_default="$bindir_default"
5035         SLIBPREF="cyg"
5036         SLIBSUF=".dll"
5037         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5038         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5039         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5040         SLIB_INSTALL_LINKS=
5041         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5042         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5043         enabled x86_64 && objformat="win64" || objformat="win32"
5044         enable dos_paths
5045         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5046         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5047         ;;
5048     *-dos|freedos|opendos)
5049         network_extralibs="-lsocket"
5050         objformat="coff"
5051         enable dos_paths
5052         add_cppflags -U__STRICT_ANSI__
5053         ;;
5054     linux)
5055         enable section_data_rel_ro
5056         enabled_any arm aarch64 && enable_weak linux_perf
5057         ;;
5058     irix*)
5059         target_os=irix
5060         ranlib="echo ignoring ranlib"
5061         ;;
5062     os/2*)
5063         strip="lxlite -CS"
5064         striptype=""
5065         objformat="aout"
5066         add_cppflags -D_GNU_SOURCE
5067         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5068         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5069         LIBSUF="_s.a"
5070         SLIBPREF=""
5071         SLIBSUF=".dll"
5072         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5073         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5074         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5075             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5076             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5077             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5078             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5079         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5080             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5081         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5082         SLIB_INSTALL_LINKS=
5083         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5084         enable dos_paths
5085         enable_weak os2threads
5086         ;;
5087     gnu/kfreebsd)
5088         add_cppflags -D_BSD_SOURCE
5089         ;;
5090     gnu)
5091         ;;
5092     qnx)
5093         add_cppflags -D_QNX_SOURCE
5094         network_extralibs="-lsocket"
5095         ;;
5096     symbian)
5097         SLIBSUF=".dll"
5098         enable dos_paths
5099         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5100         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5101         add_ldflags -Wl,--target1-abs,--no-undefined \
5102                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5103                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5104         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5105                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5106                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5107         ;;
5108     minix)
5109         ;;
5110     none)
5111         ;;
5112     *)
5113         die "Unknown OS '$target_os'."
5114         ;;
5115 esac
5116
5117 # test if creating links works
5118 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5119 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5120 mkdir "$link_dest"
5121 $ln_s "$link_dest" "$link_name"
5122 touch "$link_dest/test_file"
5123 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5124     # create link to source path
5125     [ -e src ] && rm src
5126     $ln_s "$source_path" src
5127     source_link=src
5128 else
5129     # creating directory links doesn't work
5130     # fall back to using the full source path
5131     source_link="$source_path"
5132 fi
5133 # cleanup
5134 rm -r "$link_dest"
5135 rm -r "$link_name"
5136
5137 # determine libc flavour
5138
5139 probe_libc(){
5140     pfx=$1
5141     pfx_no_=${pfx%_}
5142     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5143     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5144         eval ${pfx}libc_type=uclibc
5145         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5146     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5147         eval ${pfx}libc_type=glibc
5148         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5149     # MinGW headers can be installed on Cygwin, so check for newlib first.
5150     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5151         eval ${pfx}libc_type=newlib
5152         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5153     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5154     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5155         eval ${pfx}libc_type=mingw64
5156         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5157             add_compat msvcrt/snprintf.o
5158             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5159         fi
5160         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5161         eval test \$${pfx_no_}cc_type = "gcc" &&
5162             add_${pfx}cppflags -D__printf__=__gnu_printf__
5163     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5164          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5165         eval ${pfx}libc_type=mingw32
5166         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5167             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5168             die "ERROR: MinGW32 runtime version must be >= 3.15."
5169         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5170         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5171             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5172         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5173             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5174         eval test \$${pfx_no_}cc_type = "gcc" &&
5175             add_${pfx}cppflags -D__printf__=__gnu_printf__
5176     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5177         eval ${pfx}libc_type=msvcrt
5178         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5179             if [ "$pfx" = host_ ]; then
5180                 add_host_cppflags -Dsnprintf=_snprintf
5181             else
5182                 add_compat strtod.o strtod=avpriv_strtod
5183                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5184                                              _snprintf=avpriv_snprintf  \
5185                                              vsnprintf=avpriv_vsnprintf
5186             fi
5187         fi
5188         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5189         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5190         # 0x601 by default unless something else is set by the user.
5191         # This can easily lead to us detecting functions only present
5192         # in such new versions and producing binaries requiring windows 7.0.
5193         # Therefore explicitly set the default to XP unless the user has
5194         # set something else on the command line.
5195         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5196         # family. For these cases, configure is free to use any functions
5197         # found in the SDK headers by default. (Alternatively, we could force
5198         # _WIN32_WINNT to 0x0602 in that case.)
5199         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5200             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5201 #ifdef WINAPI_FAMILY
5202 #include <winapifamily.h>
5203 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5204 #error not desktop
5205 #endif
5206 #endif
5207 EOF
5208         if [ "$pfx" = "" ]; then
5209             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5210             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5211         fi
5212     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5213         eval ${pfx}libc_type=klibc
5214     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5215         eval ${pfx}libc_type=bionic
5216     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5217         eval ${pfx}libc_type=solaris
5218         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5219     fi
5220     check_${pfx}cc <<EOF
5221 #include <time.h>
5222 void *v = localtime_r;
5223 EOF
5224 test "$?" != 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
5225 #include <time.h>
5226 void *v = localtime_r;
5227 EOF
5228
5229     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5230 }
5231
5232 probe_libc
5233 probe_libc host_
5234
5235 # hacks for compiler/libc/os combinations
5236
5237 case $libc_type in
5238     bionic)
5239         add_compat strtod.o strtod=avpriv_strtod
5240         ;;
5241 esac
5242
5243 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5244     add_cppflags '-I\$(SRC_PATH)/compat/float'
5245
5246 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5247
5248 set_default libdir
5249 : ${shlibdir_default:="$libdir"}
5250 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5251
5252 set_default $PATHS_LIST
5253 set_default nm
5254
5255 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5256
5257 enable_weak_pic() {
5258     disabled pic && return
5259     enable pic
5260     add_cppflags -DPIC
5261     case "$target_os" in
5262     mingw*|cygwin*|win*)
5263         ;;
5264     *)
5265         add_cflags -fPIC
5266         add_asflags -fPIC
5267         ;;
5268     esac
5269 }
5270
5271 enabled pic && enable_weak_pic
5272
5273 check_cc <<EOF || die "Symbol mangling check failed."
5274 int ff_extern;
5275 EOF
5276 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5277 extern_prefix=${sym%%ff_extern*}
5278
5279 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5280
5281 _restrict=
5282 for restrict_keyword in restrict __restrict__ __restrict; do
5283     check_cc <<EOF && _restrict=$restrict_keyword && break
5284 void foo(char * $restrict_keyword p);
5285 EOF
5286 done
5287
5288 check_cc <<EOF && enable pragma_deprecated
5289 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5290 EOF
5291
5292 check_cc <<EOF || die "endian test failed"
5293 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5294 EOF
5295 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5296
5297 check_cc <<EOF && enable const_nan
5298 #include <math.h>
5299 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5300 EOF
5301
5302 if ! enabled ppc64 || enabled bigendian; then
5303     disable vsx
5304 fi
5305
5306 check_gas() {
5307     log "check_gas using '$as' as AS"
5308     # :vararg is used on aarch64, arm and ppc altivec
5309     check_as <<EOF || return 1
5310 .macro m n, y:vararg=0
5311 \n: .int \y
5312 .endm
5313 m x
5314 EOF
5315     # .altmacro is only used in arm asm
5316     ! enabled arm || check_as <<EOF || return 1
5317 .altmacro
5318 EOF
5319     enable gnu_as
5320     return 0
5321 }
5322
5323 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5324     nogas=:
5325     enabled_any arm aarch64 && nogas=die
5326     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5327     as_noop=-v
5328
5329     case $as_type in
5330         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5331         gcc)  gaspp_as_type=gas ;;
5332         *)    gaspp_as_type=$as_type ;;
5333     esac
5334
5335     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5336
5337     test "${as#*gas-preprocessor.pl}" != "$as" ||
5338     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5339         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5340
5341     if ! check_gas ; then
5342         as=${gas:=$as}
5343         check_gas || \
5344             $nogas "GNU assembler not found, install/update gas-preprocessor"
5345     fi
5346
5347     check_as <<EOF && enable as_func
5348 .func test
5349 .endfunc
5350 EOF
5351 fi
5352
5353 check_inline_asm inline_asm_labels '"1:\n"'
5354
5355 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5356
5357 if enabled aarch64; then
5358     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5359     # internal assembler in clang 3.3 does not support this instruction
5360     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5361     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5362
5363     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5364
5365 elif enabled alpha; then
5366
5367     check_cflags -mieee
5368
5369 elif enabled arm; then
5370
5371     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5372
5373     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5374 float func(float a, float b){ return a+b; }
5375 EOF
5376
5377     enabled thumb && check_cflags -mthumb || check_cflags -marm
5378
5379     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5380         enable vfp_args
5381     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5382         enable vfp_args
5383     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5384         case "${cross_prefix:-$cc}" in
5385             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5386             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5387 __asm__ (".eabi_attribute 28, 1");
5388 int main(void) { return 0; }
5389 EOF
5390         esac
5391         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5392     fi
5393
5394     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5395     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5396     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5397     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5398     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5399     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5400     enabled setend  && check_insn setend  'setend be'
5401
5402     [ $target_os = linux ] || [ $target_os = android ] ||
5403         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5404             $ARCH_EXT_LIST_ARM
5405
5406     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5407
5408     check_as <<EOF && enable as_arch_directive
5409 .arch armv7-a
5410 EOF
5411     check_as <<EOF && enable as_fpu_directive
5412 .fpu neon
5413 EOF
5414
5415     # llvm's integrated assembler supports .object_arch from llvm 3.5
5416     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5417         check_as <<EOF && enable as_object_arch
5418 .object_arch armv4
5419 EOF
5420
5421     # MS armasm fails to assemble our PIC constructs
5422     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5423
5424 elif enabled mips; then
5425
5426     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5427     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5428     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5429
5430     # Enable minimum ISA based on selected options
5431     if enabled mips64; then
5432         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5433         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5434         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5435     else
5436         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5437         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5438         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5439         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5440     fi
5441
5442     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5443     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5444     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5445     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5446     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5447
5448     if enabled bigendian && enabled msa; then
5449         disable msa
5450     fi
5451
5452 elif enabled parisc; then
5453
5454     if enabled gcc; then
5455         case $($cc -dumpversion) in
5456             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5457         esac
5458     fi
5459
5460 elif enabled ppc; then
5461
5462     enable local_aligned
5463
5464     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5465     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5466     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5467     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5468
5469     if enabled altivec; then
5470         check_cflags -maltivec -mabi=altivec
5471
5472         # check if our compiler supports Motorola AltiVec C API
5473         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5474                                  vector signed int v2 = (vector signed int) { 1 };
5475                                  v1 = vec_add(v1, v2);" ||
5476             disable altivec
5477
5478         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5479     fi
5480
5481     if enabled vsx; then
5482         check_cflags -mvsx &&
5483         check_code cc altivec.h "int v[4] = { 0 };
5484                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5485             disable vsx
5486     fi
5487
5488     if enabled power8; then
5489         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5490     fi
5491
5492 elif enabled x86; then
5493
5494     check_builtin rdtsc    intrin.h   "__rdtsc()"
5495     check_builtin mm_empty mmintrin.h "_mm_empty()"
5496
5497     enable local_aligned
5498
5499     # check whether EBP is available on x86
5500     # As 'i' is stored on the stack, this program will crash
5501     # if the base pointer is used to access it because the
5502     # base pointer is cleared in the inline assembly code.
5503     check_exec_crash <<EOF && enable ebp_available
5504 volatile int i=0;
5505 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5506 return i;
5507 EOF
5508
5509     # check whether EBX is available on x86
5510     check_inline_asm ebx_available '""::"b"(0)' &&
5511         check_inline_asm ebx_available '"":::"%ebx"'
5512
5513     # check whether xmm clobbers are supported
5514     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5515
5516     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5517         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5518
5519     # check whether binutils is new enough to compile SSSE3/MMXEXT
5520     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5521     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5522
5523     probe_x86asm(){
5524         x86asmexe_probe=$1
5525         if check_cmd $x86asmexe_probe -v; then
5526             x86asmexe=$x86asmexe_probe
5527             x86asm_type=nasm
5528             x86asm_debug="-g -F dwarf"
5529             X86ASMDEP=
5530             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5531         elif check_cmd $x86asmexe_probe --version; then
5532             x86asmexe=$x86asmexe_probe
5533             x86asm_type=yasm
5534             x86asm_debug="-g dwarf2"
5535             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5536             X86ASM_DEPFLAGS=
5537         fi
5538         check_x86asm "movbe ecx, [5]" && enable x86asm
5539     }
5540
5541     if ! disabled_any asm mmx x86asm; then
5542         disable x86asm
5543         for program in $x86asmexe nasm yasm; do
5544             probe_x86asm $program && break
5545         done
5546         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5547         X86ASMFLAGS="-f $objformat"
5548         enabled pic               && append X86ASMFLAGS "-DPIC"
5549         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5550         case "$objformat" in
5551             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5552         esac
5553
5554         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5555         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5556         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5557         check_x86asm "CPU amdnop" || disable cpunop
5558     fi
5559
5560     case "$cpu" in
5561         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5562             disable fast_clz
5563         ;;
5564     esac
5565
5566 fi
5567
5568 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5569
5570 check_ldflags -Wl,--as-needed
5571 check_ldflags -Wl,-z,noexecstack
5572
5573 if ! disabled network; then
5574     check_func getaddrinfo $network_extralibs
5575     check_func inet_aton $network_extralibs
5576
5577     check_type netdb.h "struct addrinfo"
5578     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5579     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5580     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5581     check_type poll.h "struct pollfd"
5582     check_type netinet/sctp.h "struct sctp_event_subscribe"
5583     check_struct "sys/socket.h" "struct msghdr" msg_flags
5584     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5585     check_type netinet/in.h "struct sockaddr_in6"
5586     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5587     check_type "sys/types.h sys/socket.h" socklen_t
5588
5589     # Prefer arpa/inet.h over winsock2
5590     if check_header arpa/inet.h ; then
5591         check_func closesocket
5592     elif check_header winsock2.h ; then
5593         check_func_headers winsock2.h closesocket -lws2 &&
5594             network_extralibs="-lws2" ||
5595         { check_func_headers winsock2.h closesocket -lws2_32 &&
5596             network_extralibs="-lws2_32"; } || disable winsock2_h network
5597         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5598
5599         check_type ws2tcpip.h socklen_t
5600         check_type ws2tcpip.h "struct addrinfo"
5601         check_type ws2tcpip.h "struct group_source_req"
5602         check_type ws2tcpip.h "struct ip_mreq_source"
5603         check_type ws2tcpip.h "struct ipv6_mreq"
5604         check_type winsock2.h "struct pollfd"
5605         check_struct winsock2.h "struct sockaddr" sa_len
5606         check_type ws2tcpip.h "struct sockaddr_in6"
5607         check_type ws2tcpip.h "struct sockaddr_storage"
5608     else
5609         disable network
5610     fi
5611 fi
5612
5613 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5614 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5615 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5616 check_builtin sarestart signal.h "SA_RESTART"
5617 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5618 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5619 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5620 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5621
5622 case "$custom_allocator" in
5623     jemalloc)
5624         # jemalloc by default does not use a prefix
5625         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5626     ;;
5627     tcmalloc)
5628         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5629         malloc_prefix=tc_
5630     ;;
5631 esac
5632
5633 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5634 check_func  ${malloc_prefix}memalign            && enable memalign
5635 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5636
5637 check_func  access
5638 check_func_headers stdlib.h arc4random
5639 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5640 check_func  fcntl
5641 check_func  fork
5642 check_func  gethrtime
5643 check_func  getopt
5644 check_func  getrusage
5645 check_func  gettimeofday
5646 check_func  isatty
5647 check_func  mkstemp
5648 check_func  mmap
5649 check_func  mprotect
5650 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5651 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5652 check_func  sched_getaffinity
5653 check_func  setrlimit
5654 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5655 check_func  strerror_r
5656 check_func  sysconf
5657 check_func  sysctl
5658 check_func  usleep
5659
5660 check_func_headers conio.h kbhit
5661 check_func_headers io.h setmode
5662 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5663 check_func_headers mach/mach_time.h mach_absolute_time
5664 check_func_headers stdlib.h getenv
5665 check_func_headers sys/stat.h lstat
5666
5667 check_func_headers windows.h GetProcessAffinityMask
5668 check_func_headers windows.h GetProcessTimes
5669 check_func_headers windows.h GetSystemTimeAsFileTime
5670 check_func_headers windows.h LoadLibrary
5671 check_func_headers windows.h MapViewOfFile
5672 check_func_headers windows.h PeekNamedPipe
5673 check_func_headers windows.h SetConsoleTextAttribute
5674 check_func_headers windows.h SetConsoleCtrlHandler
5675 check_func_headers windows.h Sleep
5676 check_func_headers windows.h VirtualAlloc
5677 check_struct windows.h "CONDITION_VARIABLE" Ptr
5678 check_func_headers glob.h glob
5679 enabled xlib &&
5680     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5681
5682 check_header direct.h
5683 check_header dirent.h
5684 check_header dxgidebug.h
5685 check_header dxva.h
5686 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5687 check_header io.h
5688 check_header libcrystalhd/libcrystalhd_if.h
5689 check_header malloc.h
5690 check_header net/udplite.h
5691 check_header poll.h
5692 check_header sys/param.h
5693 check_header sys/resource.h
5694 check_header sys/select.h
5695 check_header sys/time.h
5696 check_header sys/un.h
5697 check_header termios.h
5698 check_header unistd.h
5699 check_header valgrind/valgrind.h
5700 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5701 check_header windows.h
5702 check_header X11/extensions/XvMClib.h
5703 check_header asm/types.h
5704
5705 # it seems there are versions of clang in some distros that try to use the
5706 # gcc headers, which explodes for stdatomic
5707 # so we also check that atomics actually work here
5708 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5709
5710 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5711 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5712 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5713 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5714 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5715
5716 enabled appkit       && check_apple_framework AppKit
5717 enabled audiotoolbox && check_apple_framework AudioToolbox
5718 enabled avfoundation && check_apple_framework AVFoundation
5719 enabled coreimage    && check_apple_framework CoreImage
5720 enabled videotoolbox && check_apple_framework VideoToolbox
5721
5722 check_apple_framework CoreFoundation
5723 check_apple_framework CoreMedia
5724 check_apple_framework CoreVideo
5725
5726 enabled avfoundation && {
5727     disable coregraphics applicationservices
5728     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5729     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5730
5731 enabled videotoolbox && {
5732     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5733     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5734 }
5735
5736 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5737
5738 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5739 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5740 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5741 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5742 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5743
5744 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5745 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5746 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5747 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5748 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5749 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5750 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5751 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5752 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5753
5754 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5755
5756 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5757
5758 if ! disabled w32threads && ! enabled pthreads; then
5759     check_func_headers "windows.h process.h" _beginthreadex &&
5760         enable w32threads || disable w32threads
5761     if ! enabled w32threads && enabled winrt; then
5762         check_func_headers "windows.h" CreateThread &&
5763             enable w32threads || disable w32threads
5764     fi
5765 fi
5766
5767 # check for some common methods of building with pthread support
5768 # do this before the optional library checks as some of them require pthreads
5769 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5770     if check_lib pthreads pthread.h pthread_join   -pthread &&
5771        check_lib pthreads pthread.h pthread_create -pthread; then
5772         add_cflags -pthread
5773     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5774          check_lib pthreads pthread.h pthread_create -pthreads; then
5775         add_cflags -pthreads
5776     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5777          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5778         add_cflags -ldl -pthread
5779     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5780          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5781         :
5782     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5783          check_lib pthreads pthread.h pthread_create -lpthread; then
5784         :
5785     elif check_func pthread_join && check_func pthread_create; then
5786         enable pthreads
5787     fi
5788     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5789
5790     if enabled pthreads; then
5791         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5792         check_func pthread_cancel $pthreads_extralibs
5793     fi
5794 fi
5795
5796 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5797 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5798 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5799
5800 # On some systems dynamic loading requires no extra linker flags
5801 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5802
5803 check_lib libm math.h sin -lm
5804
5805 atan2f_args=2
5806 copysign_args=2
5807 hypot_args=2
5808 ldexpf_args=2
5809 powf_args=2
5810
5811 for func in $MATH_FUNCS; do
5812     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5813 done
5814
5815 for func in $COMPLEX_FUNCS; do
5816     eval check_complexfunc $func \${${func}_args:-1}
5817 done
5818
5819 # these are off by default, so fail if requested and not available
5820 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5821 enabled cuvid             && { enabled cuda ||
5822                                die "ERROR: CUVID requires CUDA"; }
5823 enabled nvdec             && { enabled cuda ||
5824                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5825 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5826 enabled decklink          && { require_header DeckLinkAPI.h &&
5827                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5828 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5829 enabled frei0r            && require_header frei0r.h
5830 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5831 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5832 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5833 enabled ladspa            && require_header ladspa.h
5834 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5835 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5836 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5837 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5838 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5839                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5840                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5841 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5842 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5843 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5844 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5845                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5846                                  warn "using libfdk without pkg-config"; } }
5847 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"
5848 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5849 enabled fontconfig        && enable libfontconfig
5850 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5851 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5852 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5853 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5854                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5855 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5856                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5857                                done || die "ERROR: libgsm not found"; }
5858 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5859 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5860 # While it may appear that require is being used as a pkg-config
5861 # fallback for libmfx, it is actually being used to detect a different
5862 # installation route altogether.  If libmfx is installed via the Intel
5863 # Media SDK or Intel Media Server Studio, these don't come with
5864 # pkg-config support.  Instead, users should make sure that the build
5865 # can find the libraries and headers through other means.
5866 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5867                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5868 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5869 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5870 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5871 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5872                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5873                                die "ERROR: libnpp not found"; }
5874 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5875 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5876 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5877                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5878                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5879                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5880 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5881 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5882                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5883 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5884 enabled libopus           && {
5885     enabled libopus_decoder && {
5886         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5887     }
5888     enabled libopus_encoder && {
5889         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5890     }
5891 }
5892 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5893 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5894 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5895 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5896 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5897 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5898                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5899 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5900 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5901 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5902 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5903 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5904 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5905 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5906                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5907                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5908 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5909 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5910 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5911 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5912 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5913                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5914
5915 enabled libvpx            && {
5916     enabled libvpx_vp8_decoder && {
5917         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5918             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5919                 die "ERROR: libvpx decoder version must be >=1.4.0";
5920     }
5921     enabled libvpx_vp8_encoder && {
5922         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5923             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5924                 die "ERROR: libvpx encoder version must be >=1.4.0";
5925     }
5926     enabled libvpx_vp9_decoder && {
5927         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5928             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5929     }
5930     enabled libvpx_vp9_encoder && {
5931         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5932             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5933     }
5934     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5935         die "libvpx enabled but no supported decoders found"
5936     fi
5937 }
5938
5939 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5940 enabled libwebp           && {
5941     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5942     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5943 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5944                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5945                                  warn "using libx264 without pkg-config"; } } &&
5946                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5947                              { check_cpp_condition x264.h "X264_MPEG2" &&
5948                                enable libx262; }
5949 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5950                              require_cpp_condition x265.h "X265_BUILD >= 68"
5951 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5952 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5953 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5954 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5955 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5956                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5957                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5958 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5959 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5960 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5961                                { ! enabled cross_compile &&
5962                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5963                                  add_ldflags -L/opt/vc/lib/ &&
5964                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5965                                die "ERROR: mmal not found" &&
5966                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5967 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5968                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5969                                die "ERROR: openal not found"; } &&
5970                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5971                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5972 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5973                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5974                                die "ERROR: opencl not found"; } &&
5975                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5976                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5977                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5978 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5979                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5980                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5981                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5982                                die "ERROR: opengl not found."
5983                              }
5984 enabled omx               && require_header OMX_Core.h
5985 enabled omx_rpi           && { check_header OMX_Core.h ||
5986                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5987                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5988 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5989                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5990                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5991                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5992                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5993                                die "ERROR: openssl not found"; }
5994 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5995                                  die "ERROR : Rockchip MPP was not found."; } &&
5996                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5997                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5998                                { enabled libdrm ||
5999                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6000                              }
6001
6002 if enabled gcrypt; then
6003     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6004     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6005         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6006         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6007         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6008             die "ERROR: gcrypt not found"
6009         add_cflags $gcrypt_cflags
6010     else
6011         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6012     fi
6013 fi
6014
6015 if enabled sdl2; then
6016     SDL2_CONFIG="${cross_prefix}sdl2-config"
6017     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6018         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6019             disable sdl2
6020     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6021         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6022         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6023         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6024         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6025         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6026             enable sdl2
6027     fi
6028     if test $target_os = "mingw32"; then
6029         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6030     fi
6031 fi
6032
6033 if enabled decklink; then
6034     case $target_os in
6035         mingw32*|mingw64*|win32|win64)
6036             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6037             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6038             ;;
6039     esac
6040 fi
6041
6042 enabled securetransport &&
6043     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6044     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6045         disable securetransport
6046
6047 enabled securetransport &&
6048     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6049
6050 enabled schannel &&
6051     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6052     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6053     schannel_extralibs="-lsecur32" ||
6054         disable schannel
6055
6056 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6057 enabled makeinfo \
6058     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6059     && enable makeinfo_html || disable makeinfo_html
6060 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6061 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6062 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6063 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6064
6065 # check V4L2 codecs available in the API
6066 check_header linux/fb.h
6067 check_header linux/videodev2.h
6068 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6069 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6070 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6071 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6072 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6073 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6074 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6075 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6076 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6077 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6078 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6079
6080 check_header sys/videoio.h
6081 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6082
6083 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6084 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6085 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6086 # w32api 3.12 had it defined wrong
6087 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6088
6089 check_type "dshow.h" IBaseFilter
6090
6091 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6092 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6093     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6094     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6095     check_header "dev/ic/bt8xx.h"
6096
6097 if check_struct sys/soundcard.h audio_buf_info bytes; then
6098     enable_sanitized sys/soundcard.h
6099 else
6100     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6101     #include <sys/soundcard.h>
6102     audio_buf_info abc;
6103 EOF
6104 fi
6105
6106 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6107     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6108
6109 enabled libjack &&
6110     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6111
6112 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6113
6114 if enabled libcdio; then
6115     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6116     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6117     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6118     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6119     die "ERROR: No usable libcdio/cdparanoia found"
6120 fi
6121
6122 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6123     disable libxcb_shm libxcb_shape libxcb_xfixes
6124
6125 if enabled libxcb; then
6126     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6127     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6128     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6129 fi
6130
6131 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6132
6133 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6134 # the desktop api partition
6135 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6136 #ifdef WINAPI_FAMILY
6137 #include <winapifamily.h>
6138 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6139 #error desktop, not uwp
6140 #else
6141 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6142 #endif
6143 #else
6144 #error no family set
6145 #endif
6146 EOF
6147
6148 enabled vaapi &&
6149     check_lib vaapi va/va.h vaInitialize -lva
6150
6151 enabled vaapi &&
6152     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6153     disable vaapi
6154
6155 enabled vaapi &&
6156     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6157
6158 enabled vaapi &&
6159     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6160
6161 enabled vaapi &&
6162     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6163     enable vaapi_1
6164
6165 if enabled_all opencl vaapi ; then
6166     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6167         enable opencl_vaapi_beignet
6168     if enabled libmfx ; then
6169         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6170             enable opencl_vaapi_intel_media
6171     fi
6172 fi
6173
6174 if enabled_all opencl dxva2 ; then
6175     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6176         enable opencl_dxva2
6177 fi
6178
6179 if enabled_all opencl d3d11va ; then
6180     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6181         enable opencl_d3d11
6182 fi
6183
6184 if enabled_all opencl libdrm ; then
6185     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6186         enable opencl_drm_arm
6187 fi
6188
6189 enabled vdpau &&
6190     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6191     disable vdpau
6192
6193 enabled vdpau &&
6194     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6195
6196 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6197
6198 if enabled x86; then
6199     case $target_os in
6200         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6201             ;;
6202         *)
6203             disable cuda cuvid nvdec nvenc
6204             ;;
6205     esac
6206 else
6207     disable cuda cuvid nvdec nvenc
6208 fi
6209
6210 enabled nvenc &&
6211     check_cc -I$source_path <<EOF || disable nvenc
6212 #include "compat/nvenc/nvEncodeAPI.h"
6213 NV_ENCODE_API_FUNCTION_LIST flist;
6214 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6215 int main(void) { return 0; }
6216 EOF
6217
6218 # Funny iconv installations are not unusual, so check it after all flags have been set
6219 if enabled libc_iconv; then
6220     check_func_headers iconv.h iconv
6221 elif enabled iconv; then
6222     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6223 fi
6224
6225 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6226
6227 # add some useful compiler flags if supported
6228 check_cflags -Wdeclaration-after-statement
6229 check_cflags -Wall
6230 check_cflags -Wdisabled-optimization
6231 check_cflags -Wpointer-arith
6232 check_cflags -Wredundant-decls
6233 check_cflags -Wwrite-strings
6234 check_cflags -Wtype-limits
6235 check_cflags -Wundef
6236 check_cflags -Wmissing-prototypes
6237 check_cflags -Wno-pointer-to-int-cast
6238 check_cflags -Wstrict-prototypes
6239 check_cflags -Wempty-body
6240
6241 if enabled extra_warnings; then
6242     check_cflags -Wcast-qual
6243     check_cflags -Wextra
6244     check_cflags -Wpedantic
6245 fi
6246
6247 check_disable_warning(){
6248     warning_flag=-W${1#-Wno-}
6249     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6250 }
6251
6252 test_cflags -Werror=unused-command-line-argument &&
6253     append unknown_warning_flags "-Werror=unused-command-line-argument"
6254 test_cflags -Werror=unknown-warning-option &&
6255     append unknown_warning_flags "-Werror=unknown-warning-option"
6256
6257 check_disable_warning -Wno-parentheses
6258 check_disable_warning -Wno-switch
6259 check_disable_warning -Wno-format-zero-length
6260 check_disable_warning -Wno-pointer-sign
6261 check_disable_warning -Wno-unused-const-variable
6262 check_disable_warning -Wno-bool-operation
6263
6264 check_disable_warning_headers(){
6265     warning_flag=-W${1#-Wno-}
6266     test_cflags $warning_flag && add_cflags_headers $1
6267 }
6268
6269 check_disable_warning_headers -Wno-deprecated-declarations
6270 check_disable_warning_headers -Wno-unused-variable
6271
6272 check_cc <<EOF && enable blocks_extension
6273 void (^block)(void);
6274 EOF
6275
6276 # add some linker flags
6277 check_ldflags -Wl,--warn-common
6278 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6279 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6280 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6281
6282 # add some strip flags
6283 check_stripflags -x
6284
6285 enabled neon_clobber_test &&
6286     check_ldflags -Wl,--wrap,avcodec_open2              \
6287                   -Wl,--wrap,avcodec_decode_audio4      \
6288                   -Wl,--wrap,avcodec_decode_video2      \
6289                   -Wl,--wrap,avcodec_decode_subtitle2   \
6290                   -Wl,--wrap,avcodec_encode_audio2      \
6291                   -Wl,--wrap,avcodec_encode_video2      \
6292                   -Wl,--wrap,avcodec_encode_subtitle    \
6293                   -Wl,--wrap,avcodec_send_packet        \
6294                   -Wl,--wrap,avcodec_receive_packet     \
6295                   -Wl,--wrap,avcodec_send_frame         \
6296                   -Wl,--wrap,avcodec_receive_frame      \
6297                   -Wl,--wrap,swr_convert                \
6298                   -Wl,--wrap,avresample_convert ||
6299     disable neon_clobber_test
6300
6301 enabled xmm_clobber_test &&
6302     check_ldflags -Wl,--wrap,avcodec_open2              \
6303                   -Wl,--wrap,avcodec_decode_audio4      \
6304                   -Wl,--wrap,avcodec_decode_video2      \
6305                   -Wl,--wrap,avcodec_decode_subtitle2   \
6306                   -Wl,--wrap,avcodec_encode_audio2      \
6307                   -Wl,--wrap,avcodec_encode_video2      \
6308                   -Wl,--wrap,avcodec_encode_subtitle    \
6309                   -Wl,--wrap,avcodec_send_packet        \
6310                   -Wl,--wrap,avcodec_receive_packet     \
6311                   -Wl,--wrap,avcodec_send_frame         \
6312                   -Wl,--wrap,avcodec_receive_frame      \
6313                   -Wl,--wrap,swr_convert                \
6314                   -Wl,--wrap,avresample_convert         \
6315                   -Wl,--wrap,sws_scale ||
6316     disable xmm_clobber_test
6317
6318 check_ld "cc" <<EOF && enable proper_dce
6319 extern const int array[512];
6320 static inline int func(void) { return array[0]; }
6321 int main(void) { return 0; }
6322 EOF
6323
6324 if enabled proper_dce; then
6325     echo "X { local: *; };" > $TMPV
6326     if test_ldflags -Wl,${version_script},$TMPV; then
6327         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6328         quotes='""'
6329         check_cc <<EOF && enable symver_asm_label
6330 void ff_foo(void) __asm__ ("av_foo@VERSION");
6331 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6332 EOF
6333         check_cc <<EOF && enable symver_gnu_asm
6334 __asm__(".symver ff_foo,av_foo@VERSION");
6335 void ff_foo(void) {}
6336 EOF
6337     fi
6338 fi
6339
6340 if [ -z "$optflags" ]; then
6341     if enabled small; then
6342         optflags=$cflags_size
6343     elif enabled optimizations; then
6344         optflags=$cflags_speed
6345     else
6346         optflags=$cflags_noopt
6347     fi
6348 fi
6349
6350 if [ -z "$nvccflags" ]; then
6351     nvccflags=$nvccflags_default
6352 fi
6353
6354 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6355     nvccflags="$nvccflags -m64"
6356 else
6357     nvccflags="$nvccflags -m32"
6358 fi
6359
6360 check_optflags(){
6361     check_cflags "$@"
6362     enabled lto && check_ldflags "$@"
6363 }
6364
6365 check_optflags $optflags
6366 check_optflags -fno-math-errno
6367 check_optflags -fno-signed-zeros
6368
6369 if enabled lto; then
6370     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6371     check_cflags  -flto
6372     check_ldflags -flto $cpuflags
6373     disable inline_asm_direct_symbol_refs
6374 fi
6375
6376 enabled ftrapv && check_cflags -ftrapv
6377
6378 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6379 int x;
6380 EOF
6381
6382
6383 if enabled icc; then
6384     # Just warnings, no remarks
6385     check_cflags -w1
6386     # -wd: Disable following warnings
6387     # 144, 167, 556: -Wno-pointer-sign
6388     # 188: enumerated type mixed with another type
6389     # 1292: attribute "foo" ignored
6390     # 1419: external declaration in primary source file
6391     # 10006: ignoring unknown option -fno-signed-zeros
6392     # 10148: ignoring unknown option -Wno-parentheses
6393     # 10156: ignoring option '-W'; no argument required
6394     # 13200: No EMMS instruction before call to function
6395     # 13203: No EMMS instruction before return from function
6396     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6397     # 11030: Warning unknown option --as-needed
6398     # 10156: ignoring option '-export'; no argument required
6399     check_ldflags -wd10156,11030
6400     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6401     enable ebp_available
6402     # The test above does not test linking
6403     enabled lto && disable symver_asm_label
6404     if enabled x86_32; then
6405         icc_version=$($cc -dumpversion)
6406         test ${icc_version%%.*} -ge 11 &&
6407             check_cflags -falign-stack=maintain-16-byte ||
6408             disable aligned_stack
6409     fi
6410 elif enabled gcc; then
6411     check_optflags -fno-tree-vectorize
6412     check_cflags -Werror=format-security
6413     check_cflags -Werror=implicit-function-declaration
6414     check_cflags -Werror=missing-prototypes
6415     check_cflags -Werror=return-type
6416     check_cflags -Werror=vla
6417     check_cflags -Wformat
6418     check_cflags -fdiagnostics-color=auto
6419     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6420 elif enabled llvm_gcc; then
6421     check_cflags -mllvm -stack-alignment=16
6422 elif enabled clang; then
6423     check_cflags -mllvm -stack-alignment=16
6424     check_cflags -mstack-alignment=16
6425     check_cflags -Qunused-arguments
6426     check_cflags -Werror=implicit-function-declaration
6427     check_cflags -Werror=missing-prototypes
6428     check_cflags -Werror=return-type
6429 elif enabled cparser; then
6430     add_cflags -Wno-missing-variable-declarations
6431     add_cflags -Wno-empty-statement
6432 elif enabled armcc; then
6433     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6434     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6435     # 2523: use of inline assembly is deprecated
6436     add_cflags -W${armcc_opt},--diag_suppress=2523
6437     add_cflags -W${armcc_opt},--diag_suppress=1207
6438     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6439     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6440     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6441     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6442 elif enabled pathscale; then
6443     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6444     disable inline_asm
6445 elif enabled_any msvc icl; then
6446     enabled x86_32 && disable aligned_stack
6447     enabled_all x86_32 debug && add_cflags -Oy-
6448     enabled debug && add_ldflags -debug
6449     enable pragma_deprecated
6450     if enabled icl; then
6451         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6452         # (correctly) on icl 13.x.
6453         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6454             add_cflags -Qansi-alias
6455         # Some inline asm is not compilable in debug
6456         if enabled debug; then
6457             disable ebp_available
6458             disable ebx_available
6459         fi
6460     fi
6461     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6462     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6463     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6464     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6465     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6466     # MSVC 2013 and newer can handle it fine.
6467     # If this declspec fails, force including stdlib.h before the restrict redefinition
6468     # happens in config.h.
6469     if [ $_restrict != restrict ]; then
6470         check_cc <<EOF || add_cflags -FIstdlib.h
6471 __declspec($_restrict) void* foo(int);
6472 EOF
6473     fi
6474     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6475     # Issue has been fixed in MSVC v19.00.24218.
6476     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6477         check_cflags -d2SSAOptimizer-
6478     # enable utf-8 source processing on VS2015 U2 and newer
6479     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6480         add_cflags -utf-8
6481 fi
6482
6483 for pfx in "" host_; do
6484     varname=${pfx%_}cc_type
6485     eval "type=\$$varname"
6486     if [ "$type" = "msvc" ]; then
6487         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6488 static inline int foo(int a) { return a; }
6489 EOF
6490     fi
6491 done
6492
6493 case $as_type in
6494     clang)
6495         add_asflags -Qunused-arguments
6496     ;;
6497 esac
6498
6499 case $ld_type in
6500     clang)
6501         check_ldflags -Qunused-arguments
6502     ;;
6503 esac
6504
6505 enable frame_thread_encoder
6506
6507 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6508
6509 check_deps $CONFIG_LIST       \
6510            $CONFIG_EXTRA      \
6511            $HAVE_LIST         \
6512            $ALL_COMPONENTS    \
6513
6514 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"
6515
6516
6517 if test $target_os = "haiku"; then
6518     disable memalign
6519     disable posix_memalign
6520 fi
6521
6522 flatten_extralibs(){
6523     unset nested_entries
6524     list_name=$1
6525     eval list=\$${1}
6526     for entry in $list; do
6527         entry_copy=$entry
6528         resolve entry_copy
6529         append nested_entries $(filter '*_extralibs' $entry_copy)
6530         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6531         eval $entry="\$flat_entries"
6532     done
6533     append $list_name "$nested_entries"
6534
6535     resolve nested_entries
6536     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6537         flatten_extralibs $list_name
6538     fi
6539 }
6540
6541 flatten_extralibs_wrapper(){
6542     list_name=$1
6543     flatten_extralibs $list_name
6544     unique $list_name
6545     resolve $list_name
6546     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6547     eval printf \''%s'\' \""\$$list_name"\"
6548 }
6549
6550 for linkunit in $LIBRARY_LIST; do
6551     unset current_extralibs
6552     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6553     for comp in ${components}; do
6554         enabled $comp || continue
6555         comp_extralibs="${comp}_extralibs"
6556         append current_extralibs $comp_extralibs
6557     done
6558     eval prepend ${linkunit}_extralibs $current_extralibs
6559 done
6560
6561 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6562     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6563 done
6564
6565 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6566
6567 for thread in $THREADS_LIST; do
6568     if enabled $thread; then
6569         test -n "$thread_type" &&
6570             die "ERROR: Only one thread type must be selected." ||
6571             thread_type="$thread"
6572     fi
6573 done
6574
6575 if disabled stdatomic; then
6576     if enabled atomics_gcc; then
6577         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6578     elif enabled atomics_win32; then
6579         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6580     elif enabled atomics_suncc; then
6581         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6582     elif enabled pthreads; then
6583         add_compat atomics/pthread/stdatomic.o
6584         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6585     else
6586         enabled threads && die "Threading is enabled, but no atomics are available"
6587         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6588     fi
6589 fi
6590
6591 # Check if requested libraries were found.
6592 for lib in $AUTODETECT_LIBS; do
6593     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6594 done
6595
6596 enabled zlib && add_cppflags -DZLIB_CONST
6597
6598 # conditional library dependencies, in linking order
6599 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6600 enabled afir_filter         && prepend avfilter_deps "avcodec"
6601 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6602 enabled aresample_filter    && prepend avfilter_deps "swresample"
6603 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6604 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6605 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6606 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6607 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6608 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6609 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6610 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6611 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6612 enabled pan_filter          && prepend avfilter_deps "swresample"
6613 enabled pp_filter           && prepend avfilter_deps "postproc"
6614 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6615 enabled resample_filter && prepend avfilter_deps "avresample"
6616 enabled sab_filter          && prepend avfilter_deps "swscale"
6617 enabled scale_filter    && prepend avfilter_deps "swscale"
6618 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6619 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6620 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6621 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6622 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6623 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6624 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6625 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6626 enabled spp_filter          && prepend avfilter_deps "avcodec"
6627 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6628 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6629 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6630
6631 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6632
6633 #FIXME
6634 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6635
6636 enabled opus_decoder    && prepend avcodec_deps "swresample"
6637
6638 expand_deps(){
6639     lib_deps=${1}_deps
6640     eval "deps=\$$lib_deps"
6641     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6642     unique $lib_deps
6643 }
6644
6645 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6646 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6647
6648 map 'expand_deps $v' $LIBRARY_LIST
6649
6650 license="LGPL version 2.1 or later"
6651 if enabled nonfree; then
6652     license="nonfree and unredistributable"
6653 elif enabled gplv3; then
6654     license="GPL version 3 or later"
6655 elif enabled lgplv3; then
6656     license="LGPL version 3 or later"
6657 elif enabled gpl; then
6658     license="GPL version 2 or later"
6659 fi
6660
6661 if test "$quiet" != "yes"; then
6662
6663 echo "install prefix            $prefix"
6664 echo "source path               $source_path"
6665 echo "C compiler                $cc"
6666 echo "C library                 $libc_type"
6667 if test "$host_cc" != "$cc"; then
6668     echo "host C compiler           $host_cc"
6669     echo "host C library            $host_libc_type"
6670 fi
6671 echo "ARCH                      $arch ($cpu)"
6672 if test "$build_suffix" != ""; then
6673     echo "build suffix              $build_suffix"
6674 fi
6675 if test "$progs_suffix" != ""; then
6676     echo "progs suffix              $progs_suffix"
6677 fi
6678 if test "$extra_version" != ""; then
6679     echo "version string suffix     $extra_version"
6680 fi
6681 echo "big-endian                ${bigendian-no}"
6682 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6683 if enabled x86; then
6684     echo "standalone assembly       ${x86asm-no}"
6685     echo "x86 assembler             ${x86asmexe}"
6686     echo "MMX enabled               ${mmx-no}"
6687     echo "MMXEXT enabled            ${mmxext-no}"
6688     echo "3DNow! enabled            ${amd3dnow-no}"
6689     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6690     echo "SSE enabled               ${sse-no}"
6691     echo "SSSE3 enabled             ${ssse3-no}"
6692     echo "AESNI enabled             ${aesni-no}"
6693     echo "AVX enabled               ${avx-no}"
6694     echo "AVX2 enabled              ${avx2-no}"
6695     echo "XOP enabled               ${xop-no}"
6696     echo "FMA3 enabled              ${fma3-no}"
6697     echo "FMA4 enabled              ${fma4-no}"
6698     echo "i686 features enabled     ${i686-no}"
6699     echo "CMOV is fast              ${fast_cmov-no}"
6700     echo "EBX available             ${ebx_available-no}"
6701     echo "EBP available             ${ebp_available-no}"
6702 fi
6703 if enabled aarch64; then
6704     echo "NEON enabled              ${neon-no}"
6705     echo "VFP enabled               ${vfp-no}"
6706 fi
6707 if enabled arm; then
6708     echo "ARMv5TE enabled           ${armv5te-no}"
6709     echo "ARMv6 enabled             ${armv6-no}"
6710     echo "ARMv6T2 enabled           ${armv6t2-no}"
6711     echo "VFP enabled               ${vfp-no}"
6712     echo "NEON enabled              ${neon-no}"
6713     echo "THUMB enabled             ${thumb-no}"
6714 fi
6715 if enabled mips; then
6716     echo "MIPS FPU enabled          ${mipsfpu-no}"
6717     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6718     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6719     echo "MIPS MSA enabled          ${msa-no}"
6720     echo "LOONGSON MMI enabled      ${mmi-no}"
6721 fi
6722 if enabled ppc; then
6723     echo "AltiVec enabled           ${altivec-no}"
6724     echo "VSX enabled               ${vsx-no}"
6725     echo "POWER8 enabled            ${power8-no}"
6726     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6727     echo "dcbzl available           ${dcbzl-no}"
6728 fi
6729 echo "debug symbols             ${debug-no}"
6730 echo "strip symbols             ${stripping-no}"
6731 echo "optimize for size         ${small-no}"
6732 echo "optimizations             ${optimizations-no}"
6733 echo "static                    ${static-no}"
6734 echo "shared                    ${shared-no}"
6735 echo "postprocessing support    ${postproc-no}"
6736 echo "network support           ${network-no}"
6737 echo "threading support         ${thread_type-no}"
6738 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6739 echo "texi2html enabled         ${texi2html-no}"
6740 echo "perl enabled              ${perl-no}"
6741 echo "pod2man enabled           ${pod2man-no}"
6742 echo "makeinfo enabled          ${makeinfo-no}"
6743 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6744 test -n "$random_seed" &&
6745     echo "random seed               ${random_seed}"
6746 echo
6747
6748 echo "External libraries:"
6749 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6750 echo
6751
6752 echo "External libraries providing hardware acceleration:"
6753 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6754 echo
6755
6756 echo "Libraries:"
6757 print_enabled '' $LIBRARY_LIST | print_in_columns
6758 echo
6759
6760 echo "Programs:"
6761 print_enabled '' $PROGRAM_LIST | print_in_columns
6762 echo
6763
6764 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6765     echo "Enabled ${type}s:"
6766     eval list=\$$(toupper $type)_LIST
6767     print_enabled '_*' $list | print_in_columns
6768     echo
6769 done
6770
6771 if test -n "$ignore_tests"; then
6772     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6773     echo "Ignored FATE tests:"
6774     echo $ignore_tests | print_in_columns
6775     echo
6776 fi
6777
6778 echo "License: $license"
6779
6780 fi # test "$quiet" != "yes"
6781
6782 if test -n "$WARNINGS"; then
6783     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6784     enabled fatal_warnings && exit 1
6785 fi
6786
6787 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6788
6789 esc(){
6790     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6791 }
6792
6793 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6794
6795 enabled stripping || strip="echo skipping strip"
6796 enabled stripping || striptype=""
6797
6798 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6799
6800 cat > ffbuild/config.mak <<EOF
6801 # Automatically generated by configure - do not modify!
6802 ifndef FFMPEG_CONFIG_MAK
6803 FFMPEG_CONFIG_MAK=1
6804 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6805 prefix=$prefix
6806 LIBDIR=\$(DESTDIR)$libdir
6807 SHLIBDIR=\$(DESTDIR)$shlibdir
6808 INCDIR=\$(DESTDIR)$incdir
6809 BINDIR=\$(DESTDIR)$bindir
6810 DATADIR=\$(DESTDIR)$datadir
6811 DOCDIR=\$(DESTDIR)$docdir
6812 MANDIR=\$(DESTDIR)$mandir
6813 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6814 INSTALL_NAME_DIR=$install_name_dir
6815 SRC_PATH=$source_path
6816 SRC_LINK=$source_link
6817 ifndef MAIN_MAKEFILE
6818 SRC_PATH:=\$(SRC_PATH:.%=..%)
6819 endif
6820 CC_IDENT=$cc_ident
6821 ARCH=$arch
6822 INTRINSICS=$intrinsics
6823 EXTERN_PREFIX=$extern_prefix
6824 CC=$cc
6825 CXX=$cxx
6826 AS=$as
6827 OBJCC=$objcc
6828 LD=$ld
6829 DEPCC=$dep_cc
6830 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6831 DEPAS=$as
6832 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6833 X86ASM=$x86asmexe
6834 DEPX86ASM=$x86asmexe
6835 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6836 AR=$ar
6837 ARFLAGS=$arflags
6838 AR_O=$ar_o
6839 AR_CMD=$ar
6840 NM_CMD=$nm
6841 RANLIB=$ranlib
6842 STRIP=$strip
6843 STRIPTYPE=$striptype
6844 NVCC=$nvcc
6845 CP=cp -p
6846 LN_S=$ln_s
6847 CPPFLAGS=$CPPFLAGS
6848 CFLAGS=$CFLAGS
6849 CXXFLAGS=$CXXFLAGS
6850 OBJCFLAGS=$OBJCFLAGS
6851 ASFLAGS=$ASFLAGS
6852 NVCCFLAGS=$nvccflags
6853 AS_C=$AS_C
6854 AS_O=$AS_O
6855 OBJCC_C=$OBJCC_C
6856 OBJCC_E=$OBJCC_E
6857 OBJCC_O=$OBJCC_O
6858 CC_C=$CC_C
6859 CC_E=$CC_E
6860 CC_O=$CC_O
6861 CXX_C=$CXX_C
6862 CXX_O=$CXX_O
6863 NVCC_C=$NVCC_C
6864 NVCC_O=$NVCC_O
6865 LD_O=$LD_O
6866 X86ASM_O=$X86ASM_O
6867 LD_LIB=$LD_LIB
6868 LD_PATH=$LD_PATH
6869 WINDRES=$windres
6870 DEPWINDRES=$dep_cc
6871 DOXYGEN=$doxygen
6872 LDFLAGS=$LDFLAGS
6873 LDEXEFLAGS=$LDEXEFLAGS
6874 LDSOFLAGS=$LDSOFLAGS
6875 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6876 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6877 X86ASMFLAGS=$X86ASMFLAGS
6878 BUILDSUF=$build_suffix
6879 PROGSSUF=$progs_suffix
6880 FULLNAME=$FULLNAME
6881 LIBPREF=$LIBPREF
6882 LIBSUF=$LIBSUF
6883 LIBNAME=$LIBNAME
6884 SLIBPREF=$SLIBPREF
6885 SLIBSUF=$SLIBSUF
6886 EXESUF=$EXESUF
6887 EXTRA_VERSION=$extra_version
6888 CCDEP=$CCDEP
6889 CXXDEP=$CXXDEP
6890 CCDEP_FLAGS=$CCDEP_FLAGS
6891 ASDEP=$ASDEP
6892 ASDEP_FLAGS=$ASDEP_FLAGS
6893 X86ASMDEP=$X86ASMDEP
6894 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6895 CC_DEPFLAGS=$CC_DEPFLAGS
6896 AS_DEPFLAGS=$AS_DEPFLAGS
6897 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6898 HOSTCC=$host_cc
6899 HOSTLD=$host_ld
6900 HOSTCFLAGS=$host_cflags
6901 HOSTCPPFLAGS=$host_cppflags
6902 HOSTEXESUF=$HOSTEXESUF
6903 HOSTLDFLAGS=$host_ldflags
6904 HOSTEXTRALIBS=$host_extralibs
6905 DEPHOSTCC=$host_cc
6906 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6907 HOSTCCDEP=$HOSTCCDEP
6908 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6909 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6910 HOSTCC_C=$HOSTCC_C
6911 HOSTCC_O=$HOSTCC_O
6912 HOSTLD_O=$HOSTLD_O
6913 TARGET_EXEC=$target_exec $target_exec_args
6914 TARGET_PATH=$target_path
6915 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6916 CFLAGS-ffplay=${sdl2_cflags}
6917 CFLAGS_HEADERS=$CFLAGS_HEADERS
6918 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6919 EXTRALIBS=$extralibs
6920 COMPAT_OBJS=$compat_objs
6921 INSTALL=$install
6922 SLIBNAME=${SLIBNAME}
6923 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6924 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6925 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6926 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6927 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6928 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6929 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6930 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6931 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6932 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6933 NOREDZONE_FLAGS=$noredzone_flags
6934 LIBFUZZER_PATH=$libfuzzer_path
6935 IGNORE_TESTS=$ignore_tests
6936 EOF
6937
6938 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6939
6940 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6941     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6942 done
6943
6944 cat > $TMPH <<EOF
6945 /* Automatically generated by configure - do not modify! */
6946 #ifndef FFMPEG_CONFIG_H
6947 #define FFMPEG_CONFIG_H
6948 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6949 #define FFMPEG_LICENSE "$(c_escape $license)"
6950 #define CONFIG_THIS_YEAR 2017
6951 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6952 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6953 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6954 #define av_restrict $_restrict
6955 #define EXTERN_PREFIX "${extern_prefix}"
6956 #define EXTERN_ASM ${extern_prefix}
6957 #define BUILDSUF "$build_suffix"
6958 #define SLIBSUF "$SLIBSUF"
6959 #define HAVE_MMX2 HAVE_MMXEXT
6960 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6961 EOF
6962
6963 test -n "$assert_level" &&
6964     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6965
6966 test -n "$malloc_prefix" &&
6967     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6968
6969 if enabled x86asm; then
6970     append config_files $TMPASM
6971     cat > $TMPASM <<EOF
6972 ; Automatically generated by configure - do not modify!
6973 EOF
6974 fi
6975
6976 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6977
6978
6979 mkdir -p doc
6980 mkdir -p tests
6981 mkdir -p tests/api
6982 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6983
6984 print_config ARCH_   "$config_files" $ARCH_LIST
6985 print_config HAVE_   "$config_files" $HAVE_LIST
6986 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6987                                      $CONFIG_EXTRA      \
6988                                      $ALL_COMPONENTS    \
6989
6990 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6991 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6992
6993 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6994 cp_if_changed $TMPH config.h
6995 touch ffbuild/.config
6996
6997 enabled x86asm && cp_if_changed $TMPASM config.asm
6998
6999 cat > $TMPH <<EOF
7000 /* Generated by ffmpeg configure */
7001 #ifndef AVUTIL_AVCONFIG_H
7002 #define AVUTIL_AVCONFIG_H
7003 EOF
7004
7005 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7006
7007 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7008
7009 cp_if_changed $TMPH libavutil/avconfig.h
7010
7011 # generate the lists of enabled components
7012 print_enabled_components(){
7013     file=$1
7014     struct_name=$2
7015     name=$3
7016     shift 3
7017     echo "static const $struct_name * const $name[] = {" > $TMPH
7018     for c in $*; do
7019         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7020     done
7021     echo "    NULL };" >> $TMPH
7022     cp_if_changed $TMPH $file
7023 }
7024
7025 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7026 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7027
7028 # Settings for pkg-config files
7029
7030 cat > $TMPH <<EOF
7031 # Automatically generated by configure - do not modify!
7032 shared=$shared
7033 build_suffix=$build_suffix
7034 prefix=$prefix
7035 libdir=$libdir
7036 incdir=$incdir
7037 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7038 source_path=${source_path}
7039 LIBPREF=${LIBPREF}
7040 LIBSUF=${LIBSUF}
7041 extralibs_avutil="$avutil_extralibs"
7042 extralibs_avcodec="$avcodec_extralibs"
7043 extralibs_avformat="$avformat_extralibs"
7044 extralibs_avdevice="$avdevice_extralibs"
7045 extralibs_avfilter="$avfilter_extralibs"
7046 extralibs_avresample="$avresample_extralibs"
7047 extralibs_postproc="$postproc_extralibs"
7048 extralibs_swscale="$swscale_extralibs"
7049 extralibs_swresample="$swresample_extralibs"
7050 EOF
7051
7052 for lib in $LIBRARY_LIST; do
7053     lib_deps="$(eval echo \$${lib}_deps)"
7054     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7055 done
7056
7057 cp_if_changed $TMPH ffbuild/config.sh