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_dxva2
2125     opencl_vaapi_beignet
2126     opencl_vaapi_intel_media
2127     perl
2128     pod2man
2129     texi2html
2130 "
2131
2132 # options emitted with CONFIG_ prefix but not available on the command line
2133 CONFIG_EXTRA="
2134     aandcttables
2135     ac3dsp
2136     adts_header
2137     audio_frame_queue
2138     audiodsp
2139     blockdsp
2140     bswapdsp
2141     cabac
2142     cbs
2143     cbs_h264
2144     cbs_h265
2145     cbs_mpeg2
2146     dirac_parse
2147     dvprofile
2148     exif
2149     faandct
2150     faanidct
2151     fdctdsp
2152     flacdsp
2153     fmtconvert
2154     frame_thread_encoder
2155     g722dsp
2156     golomb
2157     gplv3
2158     h263dsp
2159     h264chroma
2160     h264dsp
2161     h264parse
2162     h264pred
2163     h264qpel
2164     hevcparse
2165     hpeldsp
2166     huffman
2167     huffyuvdsp
2168     huffyuvencdsp
2169     idctdsp
2170     iirfilter
2171     mdct15
2172     intrax8
2173     iso_media
2174     ividsp
2175     jpegtables
2176     lgplv3
2177     libx262
2178     llauddsp
2179     llviddsp
2180     llvidencdsp
2181     lpc
2182     lzf
2183     me_cmp
2184     mpeg_er
2185     mpegaudio
2186     mpegaudiodsp
2187     mpegaudioheader
2188     mpegvideo
2189     mpegvideoenc
2190     mss34dsp
2191     pixblockdsp
2192     qpeldsp
2193     qsv
2194     qsvdec
2195     qsvenc
2196     qsvvpp
2197     rangecoder
2198     riffdec
2199     riffenc
2200     rtpdec
2201     rtpenc_chain
2202     rv34dsp
2203     sinewin
2204     snappy
2205     srtp
2206     startcode
2207     texturedsp
2208     texturedspenc
2209     tpeldsp
2210     vaapi_1
2211     vaapi_encode
2212     vc1dsp
2213     videodsp
2214     vp3dsp
2215     vp56dsp
2216     vp8dsp
2217     wma_freqs
2218     wmv2dsp
2219 "
2220
2221 CMDLINE_SELECT="
2222     $ARCH_EXT_LIST
2223     $CONFIG_LIST
2224     $HAVE_LIST_CMDLINE
2225     $THREADS_LIST
2226     asm
2227     cross_compile
2228     debug
2229     extra_warnings
2230     logging
2231     lto
2232     optimizations
2233     rpath
2234     stripping
2235 "
2236
2237 PATHS_LIST="
2238     bindir
2239     datadir
2240     docdir
2241     incdir
2242     libdir
2243     mandir
2244     pkgconfigdir
2245     prefix
2246     shlibdir
2247     install_name_dir
2248 "
2249
2250 CMDLINE_SET="
2251     $PATHS_LIST
2252     ar
2253     arch
2254     as
2255     assert_level
2256     build_suffix
2257     cc
2258     objcc
2259     cpu
2260     cross_prefix
2261     custom_allocator
2262     cxx
2263     dep_cc
2264     doxygen
2265     env
2266     extra_version
2267     gas
2268     host_cc
2269     host_cflags
2270     host_extralibs
2271     host_ld
2272     host_ldflags
2273     host_os
2274     ignore_tests
2275     install
2276     ld
2277     ln_s
2278     logfile
2279     malloc_prefix
2280     nm
2281     optflags
2282     nvccflags
2283     pkg_config
2284     pkg_config_flags
2285     progs_suffix
2286     random_seed
2287     ranlib
2288     samples
2289     strip
2290     sws_max_filter_size
2291     sysinclude
2292     sysroot
2293     target_exec
2294     target_os
2295     target_path
2296     target_samples
2297     tempprefix
2298     toolchain
2299     valgrind
2300     x86asmexe
2301 "
2302
2303 CMDLINE_APPEND="
2304     extra_cflags
2305     extra_cxxflags
2306     extra_objcflags
2307     host_cppflags
2308 "
2309
2310 # code dependency declarations
2311
2312 # architecture extensions
2313
2314 armv5te_deps="arm"
2315 armv6_deps="arm"
2316 armv6t2_deps="arm"
2317 armv8_deps="aarch64"
2318 neon_deps_any="aarch64 arm"
2319 intrinsics_neon_deps="neon"
2320 vfp_deps_any="aarch64 arm"
2321 vfpv3_deps="vfp"
2322 setend_deps="arm"
2323
2324 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2325
2326 altivec_deps="ppc"
2327 dcbzl_deps="ppc"
2328 ldbrx_deps="ppc"
2329 ppc4xx_deps="ppc"
2330 vsx_deps="altivec"
2331 power8_deps="vsx"
2332
2333 loongson2_deps="mips"
2334 loongson3_deps="mips"
2335 mips32r2_deps="mips"
2336 mips32r5_deps="mips"
2337 mips32r6_deps="mips"
2338 mips64r2_deps="mips"
2339 mips64r6_deps="mips"
2340 mipsfpu_deps="mips"
2341 mipsdsp_deps="mips"
2342 mipsdspr2_deps="mips"
2343 mmi_deps="mips"
2344 msa_deps="mipsfpu"
2345
2346 cpunop_deps="i686"
2347 x86_64_select="i686"
2348 x86_64_suggest="fast_cmov"
2349
2350 amd3dnow_deps="mmx"
2351 amd3dnowext_deps="amd3dnow"
2352 i686_deps="x86"
2353 mmx_deps="x86"
2354 mmxext_deps="mmx"
2355 sse_deps="mmxext"
2356 sse2_deps="sse"
2357 sse3_deps="sse2"
2358 ssse3_deps="sse3"
2359 sse4_deps="ssse3"
2360 sse42_deps="sse4"
2361 aesni_deps="sse42"
2362 avx_deps="sse42"
2363 xop_deps="avx"
2364 fma3_deps="avx"
2365 fma4_deps="avx"
2366 avx2_deps="avx"
2367
2368 mmx_external_deps="x86asm"
2369 mmx_inline_deps="inline_asm x86"
2370 mmx_suggest="mmx_external mmx_inline"
2371
2372 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2373     eval dep=\$${ext}_deps
2374     eval ${ext}_external_deps='"${dep}_external"'
2375     eval ${ext}_inline_deps='"${dep}_inline"'
2376     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2377 done
2378
2379 aligned_stack_if_any="aarch64 ppc x86"
2380 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2381 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2382 fast_unaligned_if_any="aarch64 ppc x86"
2383 simd_align_16_if_any="altivec neon sse"
2384 simd_align_32_if_any="avx"
2385
2386 # system capabilities
2387 symver_if_any="symver_asm_label symver_gnu_asm"
2388 valgrind_backtrace_conflict="optimizations"
2389 valgrind_backtrace_deps="valgrind_valgrind_h"
2390
2391 # threading support
2392 atomics_gcc_if="sync_val_compare_and_swap"
2393 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2394 atomics_win32_if="MemoryBarrier"
2395 atomics_native_if_any="$ATOMICS_LIST"
2396 w32threads_deps="atomics_native"
2397 threads_if_any="$THREADS_LIST"
2398
2399 # subsystems
2400 cbs_h264_select="cbs golomb"
2401 cbs_h265_select="cbs golomb"
2402 cbs_mpeg2_select="cbs"
2403 dct_select="rdft"
2404 dirac_parse_select="golomb"
2405 error_resilience_select="me_cmp"
2406 faandct_deps="faan"
2407 faandct_select="fdctdsp"
2408 faanidct_deps="faan"
2409 faanidct_select="idctdsp"
2410 h264dsp_select="startcode"
2411 hevcparse_select="golomb"
2412 frame_thread_encoder_deps="encoders threads"
2413 intrax8_select="blockdsp idctdsp"
2414 mdct_select="fft"
2415 mdct15_select="fft"
2416 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2417 mpeg_er_select="error_resilience"
2418 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2419 mpegaudiodsp_select="dct"
2420 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2421 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2422 vc1dsp_select="h264chroma qpeldsp startcode"
2423 rdft_select="fft"
2424
2425 # decoders / encoders
2426 aac_decoder_select="adts_header mdct15 mdct sinewin"
2427 aac_fixed_decoder_select="mdct sinewin"
2428 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2429 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2430 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2431 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2432 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2433 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2434 adpcm_g722_decoder_select="g722dsp"
2435 adpcm_g722_encoder_select="g722dsp"
2436 aic_decoder_select="golomb idctdsp"
2437 alac_encoder_select="lpc"
2438 als_decoder_select="bswapdsp"
2439 amrnb_decoder_select="lsp"
2440 amrwb_decoder_select="lsp"
2441 amv_decoder_select="sp5x_decoder exif"
2442 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2443 ape_decoder_select="bswapdsp llauddsp"
2444 apng_decoder_deps="zlib"
2445 apng_encoder_deps="zlib"
2446 apng_encoder_select="llvidencdsp"
2447 aptx_decoder_select="audio_frame_queue"
2448 aptx_encoder_select="audio_frame_queue"
2449 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2450 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2451 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2452 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2453 atrac1_decoder_select="mdct sinewin"
2454 atrac3_decoder_select="mdct"
2455 atrac3p_decoder_select="mdct sinewin"
2456 avrn_decoder_select="exif jpegtables"
2457 bink_decoder_select="blockdsp hpeldsp"
2458 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2459 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2460 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2461 clearvideo_decoder_select="idctdsp"
2462 cllc_decoder_select="bswapdsp"
2463 comfortnoise_encoder_select="lpc"
2464 cook_decoder_select="audiodsp mdct sinewin"
2465 cscd_decoder_select="lzo"
2466 cscd_decoder_suggest="zlib"
2467 dca_decoder_select="mdct"
2468 dds_decoder_select="texturedsp"
2469 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2470 dnxhd_decoder_select="blockdsp idctdsp"
2471 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2472 dolby_e_decoder_select="mdct"
2473 dvvideo_decoder_select="dvprofile idctdsp"
2474 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2475 dxa_decoder_deps="zlib"
2476 dxv_decoder_select="lzf texturedsp"
2477 eac3_decoder_select="ac3_decoder"
2478 eac3_encoder_select="ac3_encoder"
2479 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2480 eatgq_decoder_select="aandcttables"
2481 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2482 exr_decoder_deps="zlib"
2483 ffv1_decoder_select="rangecoder"
2484 ffv1_encoder_select="rangecoder"
2485 ffvhuff_decoder_select="huffyuv_decoder"
2486 ffvhuff_encoder_select="huffyuv_encoder"
2487 fic_decoder_select="golomb"
2488 flac_decoder_select="flacdsp"
2489 flac_encoder_select="bswapdsp flacdsp lpc"
2490 flashsv2_decoder_deps="zlib"
2491 flashsv2_encoder_deps="zlib"
2492 flashsv_decoder_deps="zlib"
2493 flashsv_encoder_deps="zlib"
2494 flv_decoder_select="h263_decoder"
2495 flv_encoder_select="h263_encoder"
2496 fourxm_decoder_select="blockdsp bswapdsp"
2497 fraps_decoder_select="bswapdsp huffman"
2498 g2m_decoder_deps="zlib"
2499 g2m_decoder_select="blockdsp idctdsp jpegtables"
2500 g729_decoder_select="audiodsp"
2501 h261_decoder_select="mpegvideo"
2502 h261_encoder_select="aandcttables mpegvideoenc"
2503 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2504 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2505 h263i_decoder_select="h263_decoder"
2506 h263p_decoder_select="h263_decoder"
2507 h263p_encoder_select="h263_encoder"
2508 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2509 h264_decoder_suggest="error_resilience"
2510 hap_decoder_select="snappy texturedsp"
2511 hap_encoder_deps="libsnappy"
2512 hap_encoder_select="texturedspenc"
2513 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2514 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2515 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2516 iac_decoder_select="imc_decoder"
2517 imc_decoder_select="bswapdsp fft mdct sinewin"
2518 indeo3_decoder_select="hpeldsp"
2519 indeo4_decoder_select="ividsp"
2520 indeo5_decoder_select="ividsp"
2521 interplay_video_decoder_select="hpeldsp"
2522 jpegls_decoder_select="mjpeg_decoder"
2523 jv_decoder_select="blockdsp"
2524 lagarith_decoder_select="llviddsp"
2525 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2526 magicyuv_decoder_select="llviddsp"
2527 magicyuv_encoder_select="llvidencdsp"
2528 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2529 metasound_decoder_select="lsp mdct sinewin"
2530 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2531 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2532 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2533 mjpegb_decoder_select="mjpeg_decoder"
2534 mlp_decoder_select="mlp_parser"
2535 mlp_encoder_select="lpc"
2536 motionpixels_decoder_select="bswapdsp"
2537 mp1_decoder_select="mpegaudio"
2538 mp1float_decoder_select="mpegaudio"
2539 mp2_decoder_select="mpegaudio"
2540 mp2float_decoder_select="mpegaudio"
2541 mp3_decoder_select="mpegaudio"
2542 mp3adu_decoder_select="mpegaudio"
2543 mp3adufloat_decoder_select="mpegaudio"
2544 mp3float_decoder_select="mpegaudio"
2545 mp3on4_decoder_select="mpegaudio"
2546 mp3on4float_decoder_select="mpegaudio"
2547 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2548 mpc8_decoder_select="mpegaudiodsp"
2549 mpegvideo_decoder_select="mpegvideo"
2550 mpeg1video_decoder_select="mpegvideo"
2551 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2552 mpeg2video_decoder_select="mpegvideo"
2553 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2554 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2555 mpeg4_encoder_select="h263_encoder"
2556 msa1_decoder_select="mss34dsp"
2557 mscc_decoder_deps="zlib"
2558 msmpeg4v1_decoder_select="h263_decoder"
2559 msmpeg4v2_decoder_select="h263_decoder"
2560 msmpeg4v2_encoder_select="h263_encoder"
2561 msmpeg4v3_decoder_select="h263_decoder"
2562 msmpeg4v3_encoder_select="h263_encoder"
2563 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2564 mts2_decoder_select="mss34dsp"
2565 mxpeg_decoder_select="mjpeg_decoder"
2566 nellymoser_decoder_select="mdct sinewin"
2567 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2568 nuv_decoder_select="idctdsp lzo"
2569 on2avc_decoder_select="mdct"
2570 opus_decoder_deps="swresample"
2571 opus_decoder_select="mdct15"
2572 opus_encoder_select="audio_frame_queue mdct15"
2573 png_decoder_deps="zlib"
2574 png_encoder_deps="zlib"
2575 png_encoder_select="llvidencdsp"
2576 prores_decoder_select="blockdsp idctdsp"
2577 prores_encoder_select="fdctdsp"
2578 qcelp_decoder_select="lsp"
2579 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2580 ra_144_decoder_select="audiodsp"
2581 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2582 ralf_decoder_select="golomb"
2583 rawvideo_decoder_select="bswapdsp"
2584 rscc_decoder_deps="zlib"
2585 rtjpeg_decoder_select="me_cmp"
2586 rv10_decoder_select="h263_decoder"
2587 rv10_encoder_select="h263_encoder"
2588 rv20_decoder_select="h263_decoder"
2589 rv20_encoder_select="h263_encoder"
2590 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2591 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2592 screenpresso_decoder_deps="zlib"
2593 shorten_decoder_select="bswapdsp"
2594 sipr_decoder_select="lsp"
2595 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2596 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2597 sonic_decoder_select="golomb rangecoder"
2598 sonic_encoder_select="golomb rangecoder"
2599 sonic_ls_encoder_select="golomb rangecoder"
2600 sp5x_decoder_select="mjpeg_decoder"
2601 srgc_decoder_deps="zlib"
2602 svq1_decoder_select="hpeldsp"
2603 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2604 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2605 svq3_decoder_suggest="zlib"
2606 tak_decoder_select="audiodsp"
2607 tdsc_decoder_deps="zlib"
2608 tdsc_decoder_select="mjpeg_decoder"
2609 theora_decoder_select="vp3_decoder"
2610 thp_decoder_select="mjpeg_decoder"
2611 tiff_decoder_suggest="zlib lzma"
2612 tiff_encoder_suggest="zlib"
2613 truehd_decoder_select="mlp_parser"
2614 truehd_encoder_select="lpc"
2615 truemotion2_decoder_select="bswapdsp"
2616 truespeech_decoder_select="bswapdsp"
2617 tscc_decoder_deps="zlib"
2618 twinvq_decoder_select="mdct lsp sinewin"
2619 txd_decoder_select="texturedsp"
2620 utvideo_decoder_select="bswapdsp llviddsp"
2621 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2622 vble_decoder_select="llviddsp"
2623 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2624 vc1image_decoder_select="vc1_decoder"
2625 vorbis_decoder_select="mdct"
2626 vorbis_encoder_select="mdct"
2627 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2628 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2629 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2630 vp6a_decoder_select="vp6_decoder"
2631 vp6f_decoder_select="vp6_decoder"
2632 vp7_decoder_select="h264pred videodsp vp8dsp"
2633 vp8_decoder_select="h264pred videodsp vp8dsp"
2634 vp9_decoder_select="videodsp vp9_parser"
2635 webp_decoder_select="vp8_decoder exif"
2636 wmalossless_decoder_select="llauddsp"
2637 wmapro_decoder_select="mdct sinewin wma_freqs"
2638 wmav1_decoder_select="mdct sinewin wma_freqs"
2639 wmav1_encoder_select="mdct sinewin wma_freqs"
2640 wmav2_decoder_select="mdct sinewin wma_freqs"
2641 wmav2_encoder_select="mdct sinewin wma_freqs"
2642 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2643 wmv1_decoder_select="h263_decoder"
2644 wmv1_encoder_select="h263_encoder"
2645 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2646 wmv2_encoder_select="h263_encoder wmv2dsp"
2647 wmv3_decoder_select="vc1_decoder"
2648 wmv3image_decoder_select="wmv3_decoder"
2649 xma1_decoder_select="wmapro_decoder"
2650 xma2_decoder_select="wmapro_decoder"
2651 zerocodec_decoder_deps="zlib"
2652 zlib_decoder_deps="zlib"
2653 zlib_encoder_deps="zlib"
2654 zmbv_decoder_deps="zlib"
2655 zmbv_encoder_deps="zlib"
2656
2657 # hardware accelerators
2658 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2659 cuda_deps_any="libdl LoadLibrary"
2660 cuvid_deps="cuda"
2661 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2662 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2663 nvdec_deps="cuda"
2664 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2665 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2666 xvmc_deps="X11_extensions_XvMClib_h"
2667
2668 h263_vaapi_hwaccel_deps="vaapi"
2669 h263_vaapi_hwaccel_select="h263_decoder"
2670 h263_videotoolbox_hwaccel_deps="videotoolbox"
2671 h263_videotoolbox_hwaccel_select="h263_decoder"
2672 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2673 h264_d3d11va_hwaccel_deps="d3d11va"
2674 h264_d3d11va_hwaccel_select="h264_decoder"
2675 h264_d3d11va2_hwaccel_deps="d3d11va"
2676 h264_d3d11va2_hwaccel_select="h264_decoder"
2677 h264_dxva2_hwaccel_deps="dxva2"
2678 h264_dxva2_hwaccel_select="h264_decoder"
2679 h264_mediacodec_hwaccel_deps="mediacodec"
2680 h264_mmal_hwaccel_deps="mmal"
2681 h264_nvdec_hwaccel_deps="nvdec"
2682 h264_nvdec_hwaccel_select="h264_decoder"
2683 h264_qsv_hwaccel_deps="libmfx"
2684 h264_vaapi_hwaccel_deps="vaapi"
2685 h264_vaapi_hwaccel_select="h264_decoder"
2686 h264_vdpau_hwaccel_deps="vdpau"
2687 h264_vdpau_hwaccel_select="h264_decoder"
2688 h264_videotoolbox_hwaccel_deps="videotoolbox"
2689 h264_videotoolbox_hwaccel_select="h264_decoder"
2690 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2691 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2692 hevc_d3d11va_hwaccel_select="hevc_decoder"
2693 hevc_mediacodec_hwaccel_deps="mediacodec"
2694 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2695 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2696 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2697 hevc_dxva2_hwaccel_select="hevc_decoder"
2698 hevc_nvdec_hwaccel_deps="nvdec"
2699 hevc_nvdec_hwaccel_select="hevc_decoder"
2700 hevc_qsv_hwaccel_deps="libmfx"
2701 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2702 hevc_vaapi_hwaccel_select="hevc_decoder"
2703 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2704 hevc_vdpau_hwaccel_select="hevc_decoder"
2705 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2706 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2707 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2708 mpeg_xvmc_hwaccel_deps="xvmc"
2709 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2710 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2711 mpeg1_nvdec_hwaccel_deps="nvdec"
2712 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2713 mpeg1_vdpau_hwaccel_deps="vdpau"
2714 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2715 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2716 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2717 mpeg1_xvmc_hwaccel_deps="xvmc"
2718 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2719 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2720 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2721 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2723 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_dxva2_hwaccel_deps="dxva2"
2725 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2727 mpeg2_mmal_hwaccel_deps="mmal"
2728 mpeg2_nvdec_hwaccel_deps="nvdec"
2729 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_qsv_hwaccel_deps="libmfx"
2731 mpeg2_vaapi_hwaccel_deps="vaapi"
2732 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_vdpau_hwaccel_deps="vdpau"
2734 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2735 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2736 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2737 mpeg2_xvmc_hwaccel_deps="xvmc"
2738 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2739 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2740 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2741 mpeg4_mmal_hwaccel_deps="mmal"
2742 mpeg4_nvdec_hwaccel_deps="nvdec"
2743 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2744 mpeg4_vaapi_hwaccel_deps="vaapi"
2745 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2746 mpeg4_vdpau_hwaccel_deps="vdpau"
2747 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2748 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2749 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2750 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2751 vc1_d3d11va_hwaccel_deps="d3d11va"
2752 vc1_d3d11va_hwaccel_select="vc1_decoder"
2753 vc1_d3d11va2_hwaccel_deps="d3d11va"
2754 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2755 vc1_dxva2_hwaccel_deps="dxva2"
2756 vc1_dxva2_hwaccel_select="vc1_decoder"
2757 vc1_mmal_hwaccel_deps="mmal"
2758 vc1_nvdec_hwaccel_deps="nvdec"
2759 vc1_nvdec_hwaccel_select="vc1_decoder"
2760 vc1_qsv_hwaccel_deps="libmfx"
2761 vc1_vaapi_hwaccel_deps="vaapi"
2762 vc1_vaapi_hwaccel_select="vc1_decoder"
2763 vc1_vdpau_hwaccel_deps="vdpau"
2764 vc1_vdpau_hwaccel_select="vc1_decoder"
2765 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2766 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2767 vp8_mediacodec_hwaccel_deps="mediacodec"
2768 vp8_qsv_hwaccel_deps="libmfx"
2769 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2770 vp9_d3d11va_hwaccel_select="vp9_decoder"
2771 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2772 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2773 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2774 vp9_dxva2_hwaccel_select="vp9_decoder"
2775 vp9_mediacodec_hwaccel_deps="mediacodec"
2776 vp9_nvdec_hwaccel_deps="nvdec"
2777 vp9_nvdec_hwaccel_select="vp9_decoder"
2778 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2779 vp9_vaapi_hwaccel_select="vp9_decoder"
2780 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2781 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2782 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2783 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2784 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2785 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2786
2787 # hardware-accelerated codecs
2788 omx_deps="libdl pthreads"
2789 omx_rpi_select="omx"
2790 qsv_deps="libmfx"
2791 qsvdec_select="qsv"
2792 qsvenc_select="qsv"
2793 qsvvpp_select="qsv"
2794 vaapi_encode_deps="vaapi"
2795 v4l2_m2m_deps_any="linux_videodev2_h"
2796
2797 hwupload_cuda_filter_deps="cuda"
2798 scale_npp_filter_deps="cuda libnpp"
2799 scale_cuda_filter_deps="cuda_sdk"
2800 thumbnail_cuda_filter_deps="cuda_sdk"
2801
2802 nvenc_deps="cuda"
2803 nvenc_deps_any="libdl LoadLibrary"
2804 nvenc_encoder_deps="nvenc"
2805
2806 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2807 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2808 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2809 h264_cuvid_decoder_deps="cuvid"
2810 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2811 h264_mediacodec_decoder_deps="mediacodec"
2812 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2813 h264_mmal_decoder_deps="mmal"
2814 h264_nvenc_encoder_deps="nvenc"
2815 h264_omx_encoder_deps="omx"
2816 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2817 h264_qsv_encoder_select="qsvenc"
2818 h264_rkmpp_decoder_deps="rkmpp"
2819 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2820 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2821 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2822 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2823 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2824 hevc_cuvid_decoder_deps="cuvid"
2825 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2826 hevc_mediacodec_decoder_deps="mediacodec"
2827 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2828 hevc_nvenc_encoder_deps="nvenc"
2829 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2830 hevc_qsv_encoder_select="hevcparse qsvenc"
2831 hevc_rkmpp_decoder_deps="rkmpp"
2832 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2833 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2834 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2835 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2836 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2837 mjpeg_cuvid_decoder_deps="cuvid"
2838 mjpeg_qsv_encoder_deps="libmfx"
2839 mjpeg_qsv_encoder_select="qsvenc"
2840 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2841 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2842 mpeg1_cuvid_decoder_deps="cuvid"
2843 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2844 mpeg2_crystalhd_decoder_select="crystalhd"
2845 mpeg2_cuvid_decoder_deps="cuvid"
2846 mpeg2_mmal_decoder_deps="mmal"
2847 mpeg2_mediacodec_decoder_deps="mediacodec"
2848 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2849 mpeg2_qsv_encoder_select="qsvenc"
2850 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2851 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2852 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2853 mpeg4_crystalhd_decoder_select="crystalhd"
2854 mpeg4_cuvid_decoder_deps="cuvid"
2855 mpeg4_mediacodec_decoder_deps="mediacodec"
2856 mpeg4_mmal_decoder_deps="mmal"
2857 mpeg4_omx_encoder_deps="omx"
2858 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2859 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2860 msmpeg4_crystalhd_decoder_select="crystalhd"
2861 nvenc_h264_encoder_select="h264_nvenc_encoder"
2862 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2863 vc1_crystalhd_decoder_select="crystalhd"
2864 vc1_cuvid_decoder_deps="cuvid"
2865 vc1_mmal_decoder_deps="mmal"
2866 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2867 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2868 vp8_cuvid_decoder_deps="cuvid"
2869 vp8_mediacodec_decoder_deps="mediacodec"
2870 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2871 vp8_rkmpp_decoder_deps="rkmpp"
2872 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2873 vp8_vaapi_encoder_select="vaapi_encode"
2874 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2875 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2876 vp9_cuvid_decoder_deps="cuvid"
2877 vp9_mediacodec_decoder_deps="mediacodec"
2878 vp9_rkmpp_decoder_deps="rkmpp"
2879 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2880 vp9_vaapi_encoder_select="vaapi_encode"
2881 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2882 wmv3_crystalhd_decoder_select="crystalhd"
2883
2884 # parsers
2885 aac_parser_select="adts_header"
2886 h264_parser_select="golomb h264dsp h264parse"
2887 hevc_parser_select="hevcparse"
2888 mpegaudio_parser_select="mpegaudioheader"
2889 mpegvideo_parser_select="mpegvideo"
2890 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2891 vc1_parser_select="vc1dsp"
2892
2893 # bitstream_filters
2894 aac_adtstoasc_bsf_select="adts_header"
2895 h264_metadata_bsf_select="cbs_h264"
2896 h264_redundant_pps_bsf_select="cbs_h264"
2897 hevc_metadata_bsf_select="cbs_h265"
2898 mjpeg2jpeg_bsf_select="jpegtables"
2899 mpeg2_metadata_bsf_select="cbs_mpeg2"
2900 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2901
2902 # external libraries
2903 aac_at_decoder_deps="audiotoolbox"
2904 ac3_at_decoder_deps="audiotoolbox"
2905 ac3_at_decoder_select="ac3_parser"
2906 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2907 alac_at_decoder_deps="audiotoolbox"
2908 amr_nb_at_decoder_deps="audiotoolbox"
2909 avisynth_deps_any="libdl LoadLibrary"
2910 avisynth_demuxer_deps="avisynth"
2911 avisynth_demuxer_select="riffdec"
2912 eac3_at_decoder_deps="audiotoolbox"
2913 eac3_at_decoder_select="ac3_parser"
2914 gsm_ms_at_decoder_deps="audiotoolbox"
2915 ilbc_at_decoder_deps="audiotoolbox"
2916 mp1_at_decoder_deps="audiotoolbox"
2917 mp2_at_decoder_deps="audiotoolbox"
2918 mp3_at_decoder_deps="audiotoolbox"
2919 mp1_at_decoder_select="mpegaudioheader"
2920 mp2_at_decoder_select="mpegaudioheader"
2921 mp3_at_decoder_select="mpegaudioheader"
2922 pcm_alaw_at_decoder_deps="audiotoolbox"
2923 pcm_mulaw_at_decoder_deps="audiotoolbox"
2924 qdmc_at_decoder_deps="audiotoolbox"
2925 qdm2_at_decoder_deps="audiotoolbox"
2926 aac_at_encoder_deps="audiotoolbox"
2927 aac_at_encoder_select="audio_frame_queue"
2928 alac_at_encoder_deps="audiotoolbox"
2929 alac_at_encoder_select="audio_frame_queue"
2930 ilbc_at_encoder_deps="audiotoolbox"
2931 ilbc_at_encoder_select="audio_frame_queue"
2932 pcm_alaw_at_encoder_deps="audiotoolbox"
2933 pcm_alaw_at_encoder_select="audio_frame_queue"
2934 pcm_mulaw_at_encoder_deps="audiotoolbox"
2935 pcm_mulaw_at_encoder_select="audio_frame_queue"
2936 chromaprint_muxer_deps="chromaprint"
2937 h264_videotoolbox_encoder_deps="pthreads"
2938 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2939 hevc_videotoolbox_encoder_deps="pthreads"
2940 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2941 libcelt_decoder_deps="libcelt"
2942 libfdk_aac_decoder_deps="libfdk_aac"
2943 libfdk_aac_encoder_deps="libfdk_aac"
2944 libfdk_aac_encoder_select="audio_frame_queue"
2945 libgme_demuxer_deps="libgme"
2946 libgsm_decoder_deps="libgsm"
2947 libgsm_encoder_deps="libgsm"
2948 libgsm_ms_decoder_deps="libgsm"
2949 libgsm_ms_encoder_deps="libgsm"
2950 libilbc_decoder_deps="libilbc"
2951 libilbc_encoder_deps="libilbc"
2952 libkvazaar_encoder_deps="libkvazaar"
2953 libmodplug_demuxer_deps="libmodplug"
2954 libmp3lame_encoder_deps="libmp3lame"
2955 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2956 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2957 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2958 libopencore_amrnb_encoder_select="audio_frame_queue"
2959 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2960 libopenh264_decoder_deps="libopenh264"
2961 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2962 libopenh264_encoder_deps="libopenh264"
2963 libopenjpeg_decoder_deps="libopenjpeg"
2964 libopenjpeg_encoder_deps="libopenjpeg"
2965 libopenmpt_demuxer_deps="libopenmpt"
2966 libopus_decoder_deps="libopus"
2967 libopus_encoder_deps="libopus"
2968 libopus_encoder_select="audio_frame_queue"
2969 librsvg_decoder_deps="librsvg"
2970 libshine_encoder_deps="libshine"
2971 libshine_encoder_select="audio_frame_queue"
2972 libspeex_decoder_deps="libspeex"
2973 libspeex_encoder_deps="libspeex"
2974 libspeex_encoder_select="audio_frame_queue"
2975 libtheora_encoder_deps="libtheora"
2976 libtwolame_encoder_deps="libtwolame"
2977 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2978 libvorbis_decoder_deps="libvorbis"
2979 libvorbis_encoder_deps="libvorbis libvorbisenc"
2980 libvorbis_encoder_select="audio_frame_queue"
2981 libvpx_vp8_decoder_deps="libvpx"
2982 libvpx_vp8_encoder_deps="libvpx"
2983 libvpx_vp9_decoder_deps="libvpx"
2984 libvpx_vp9_encoder_deps="libvpx"
2985 libwavpack_encoder_deps="libwavpack"
2986 libwavpack_encoder_select="audio_frame_queue"
2987 libwebp_encoder_deps="libwebp"
2988 libwebp_anim_encoder_deps="libwebp"
2989 libx262_encoder_deps="libx262"
2990 libx264_encoder_deps="libx264"
2991 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2992 libx264rgb_encoder_select="libx264_encoder"
2993 libx265_encoder_deps="libx265"
2994 libxavs_encoder_deps="libxavs"
2995 libxvid_encoder_deps="libxvid"
2996 libzvbi_teletext_decoder_deps="libzvbi"
2997 videotoolbox_suggest="coreservices"
2998 videotoolbox_deps="corefoundation coremedia corevideo"
2999 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3000
3001 # demuxers / muxers
3002 ac3_demuxer_select="ac3_parser"
3003 aiff_muxer_select="iso_media"
3004 asf_demuxer_select="riffdec"
3005 asf_o_demuxer_select="riffdec"
3006 asf_muxer_select="riffenc"
3007 asf_stream_muxer_select="asf_muxer"
3008 avi_demuxer_select="iso_media riffdec exif"
3009 avi_muxer_select="riffenc"
3010 caf_demuxer_select="iso_media riffdec"
3011 caf_muxer_select="iso_media"
3012 dash_muxer_select="mp4_muxer"
3013 dash_demuxer_deps="libxml2"
3014 dirac_demuxer_select="dirac_parser"
3015 dts_demuxer_select="dca_parser"
3016 dtshd_demuxer_select="dca_parser"
3017 dv_demuxer_select="dvprofile"
3018 dv_muxer_select="dvprofile"
3019 dxa_demuxer_select="riffdec"
3020 eac3_demuxer_select="ac3_parser"
3021 f4v_muxer_select="mov_muxer"
3022 fifo_muxer_deps="threads"
3023 flac_demuxer_select="flac_parser"
3024 hds_muxer_select="flv_muxer"
3025 hls_muxer_select="mpegts_muxer"
3026 hls_muxer_suggest="gcrypt openssl"
3027 image2_alias_pix_demuxer_select="image2_demuxer"
3028 image2_brender_pix_demuxer_select="image2_demuxer"
3029 ipod_muxer_select="mov_muxer"
3030 ismv_muxer_select="mov_muxer"
3031 matroska_audio_muxer_select="matroska_muxer"
3032 matroska_demuxer_select="iso_media riffdec"
3033 matroska_demuxer_suggest="bzlib lzo zlib"
3034 matroska_muxer_select="iso_media riffenc"
3035 mmf_muxer_select="riffenc"
3036 mov_demuxer_select="iso_media riffdec"
3037 mov_demuxer_suggest="zlib"
3038 mov_muxer_select="iso_media riffenc rtpenc_chain"
3039 mp3_demuxer_select="mpegaudio_parser"
3040 mp3_muxer_select="mpegaudioheader"
3041 mp4_muxer_select="mov_muxer"
3042 mpegts_demuxer_select="iso_media"
3043 mpegts_muxer_select="adts_muxer latm_muxer"
3044 mpegtsraw_demuxer_select="mpegts_demuxer"
3045 mxf_d10_muxer_select="mxf_muxer"
3046 mxf_opatom_muxer_select="mxf_muxer"
3047 nut_muxer_select="riffenc"
3048 nuv_demuxer_select="riffdec"
3049 oga_muxer_select="ogg_muxer"
3050 ogg_demuxer_select="dirac_parse"
3051 ogv_muxer_select="ogg_muxer"
3052 opus_muxer_select="ogg_muxer"
3053 psp_muxer_select="mov_muxer"
3054 rtp_demuxer_select="sdp_demuxer"
3055 rtp_muxer_select="golomb"
3056 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3057 rtsp_demuxer_select="http_protocol rtpdec"
3058 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3059 sap_demuxer_select="sdp_demuxer"
3060 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3061 sdp_demuxer_select="rtpdec"
3062 smoothstreaming_muxer_select="ismv_muxer"
3063 spdif_demuxer_select="adts_header"
3064 spdif_muxer_select="adts_header"
3065 spx_muxer_select="ogg_muxer"
3066 swf_demuxer_suggest="zlib"
3067 tak_demuxer_select="tak_parser"
3068 tg2_muxer_select="mov_muxer"
3069 tgp_muxer_select="mov_muxer"
3070 vobsub_demuxer_select="mpegps_demuxer"
3071 w64_demuxer_select="wav_demuxer"
3072 w64_muxer_select="wav_muxer"
3073 wav_demuxer_select="riffdec"
3074 wav_muxer_select="riffenc"
3075 webm_muxer_select="iso_media riffenc"
3076 webm_dash_manifest_demuxer_select="matroska_demuxer"
3077 wtv_demuxer_select="mpegts_demuxer riffdec"
3078 wtv_muxer_select="mpegts_muxer riffenc"
3079 xmv_demuxer_select="riffdec"
3080 xwma_demuxer_select="riffdec"
3081
3082 # indevs / outdevs
3083 alsa_indev_deps="alsa"
3084 alsa_outdev_deps="alsa"
3085 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3086 avfoundation_indev_suggest="coregraphics applicationservices"
3087 avfoundation_indev_extralibs="-framework Foundation"
3088 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3089 caca_outdev_deps="libcaca"
3090 decklink_deps_any="libdl LoadLibrary"
3091 decklink_indev_deps="decklink threads"
3092 decklink_indev_extralibs="-lstdc++"
3093 decklink_outdev_deps="decklink threads"
3094 decklink_outdev_extralibs="-lstdc++"
3095 libndi_newtek_indev_deps="libndi_newtek"
3096 libndi_newtek_indev_extralibs="-lndi"
3097 libndi_newtek_outdev_deps="libndi_newtek"
3098 libndi_newtek_outdev_extralibs="-lndi"
3099 dshow_indev_deps="IBaseFilter"
3100 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3101 fbdev_indev_deps="linux_fb_h"
3102 fbdev_outdev_deps="linux_fb_h"
3103 gdigrab_indev_deps="CreateDIBSection"
3104 gdigrab_indev_extralibs="-lgdi32"
3105 gdigrab_indev_select="bmp_decoder"
3106 iec61883_indev_deps="libiec61883"
3107 jack_indev_deps="libjack"
3108 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3109 kmsgrab_indev_deps="libdrm"
3110 lavfi_indev_deps="avfilter"
3111 libcdio_indev_deps="libcdio"
3112 libdc1394_indev_deps="libdc1394"
3113 openal_indev_deps="openal"
3114 opengl_outdev_deps="opengl"
3115 oss_indev_deps_any="sys_soundcard_h"
3116 oss_outdev_deps_any="sys_soundcard_h"
3117 pulse_indev_deps="libpulse"
3118 pulse_outdev_deps="libpulse"
3119 sdl2_outdev_deps="sdl2"
3120 sndio_indev_deps="sndio"
3121 sndio_outdev_deps="sndio"
3122 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3123 v4l2_indev_suggest="libv4l2"
3124 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3125 v4l2_outdev_suggest="libv4l2"
3126 vfwcap_indev_deps="vfw32 vfwcap_defines"
3127 xcbgrab_indev_deps="libxcb"
3128 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3129 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3130 xv_outdev_extralibs="-lXv -lX11 -lXext"
3131
3132 # protocols
3133 async_protocol_deps="threads"
3134 bluray_protocol_deps="libbluray"
3135 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3136 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3137 ffrtmpcrypt_protocol_select="tcp_protocol"
3138 ffrtmphttp_protocol_conflict="librtmp_protocol"
3139 ffrtmphttp_protocol_select="http_protocol"
3140 ftp_protocol_select="tcp_protocol"
3141 gopher_protocol_select="network"
3142 http_protocol_select="tcp_protocol"
3143 http_protocol_suggest="zlib"
3144 httpproxy_protocol_select="tcp_protocol"
3145 httpproxy_protocol_suggest="zlib"
3146 https_protocol_select="tls_protocol"
3147 https_protocol_suggest="zlib"
3148 icecast_protocol_select="http_protocol"
3149 librtmp_protocol_deps="librtmp"
3150 librtmpe_protocol_deps="librtmp"
3151 librtmps_protocol_deps="librtmp"
3152 librtmpt_protocol_deps="librtmp"
3153 librtmpte_protocol_deps="librtmp"
3154 libsmbclient_protocol_deps="libsmbclient gplv3"
3155 libssh_protocol_deps="libssh"
3156 mmsh_protocol_select="http_protocol"
3157 mmst_protocol_select="network"
3158 rtmp_protocol_conflict="librtmp_protocol"
3159 rtmp_protocol_select="tcp_protocol"
3160 rtmp_protocol_suggest="zlib"
3161 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3162 rtmpe_protocol_suggest="zlib"
3163 rtmps_protocol_conflict="librtmp_protocol"
3164 rtmps_protocol_select="tls_protocol"
3165 rtmps_protocol_suggest="zlib"
3166 rtmpt_protocol_select="ffrtmphttp_protocol"
3167 rtmpt_protocol_suggest="zlib"
3168 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3169 rtmpte_protocol_suggest="zlib"
3170 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3171 rtmpts_protocol_suggest="zlib"
3172 rtp_protocol_select="udp_protocol"
3173 schannel_conflict="openssl gnutls"
3174 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3175 sctp_protocol_select="network"
3176 securetransport_conflict="openssl gnutls"
3177 srtp_protocol_select="rtp_protocol srtp"
3178 tcp_protocol_select="network"
3179 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3180 tls_protocol_select="tcp_protocol"
3181 udp_protocol_select="network"
3182 udplite_protocol_select="network"
3183 unix_protocol_deps="sys_un_h"
3184 unix_protocol_select="network"
3185
3186 # filters
3187 afftfilt_filter_deps="avcodec"
3188 afftfilt_filter_select="fft"
3189 afir_filter_deps="avcodec"
3190 afir_filter_select="fft"
3191 amovie_filter_deps="avcodec avformat"
3192 aresample_filter_deps="swresample"
3193 ass_filter_deps="libass"
3194 atempo_filter_deps="avcodec"
3195 atempo_filter_select="rdft"
3196 azmq_filter_deps="libzmq"
3197 blackframe_filter_deps="gpl"
3198 boxblur_filter_deps="gpl"
3199 bs2b_filter_deps="libbs2b"
3200 colormatrix_filter_deps="gpl"
3201 coreimage_filter_deps="coreimage appkit"
3202 coreimage_filter_extralibs="-framework OpenGL"
3203 coreimagesrc_filter_deps="coreimage appkit"
3204 coreimagesrc_filter_extralibs="-framework OpenGL"
3205 cover_rect_filter_deps="avcodec avformat gpl"
3206 cropdetect_filter_deps="gpl"
3207 deinterlace_qsv_filter_deps="libmfx"
3208 deinterlace_vaapi_filter_deps="vaapi"
3209 delogo_filter_deps="gpl"
3210 deshake_filter_select="pixelutils"
3211 deshake_filter_suggest="opencl"
3212 drawtext_filter_deps="libfreetype"
3213 drawtext_filter_suggest="libfontconfig libfribidi"
3214 elbg_filter_deps="avcodec"
3215 eq_filter_deps="gpl"
3216 fftfilt_filter_deps="avcodec"
3217 fftfilt_filter_select="rdft"
3218 find_rect_filter_deps="avcodec avformat gpl"
3219 firequalizer_filter_deps="avcodec"
3220 firequalizer_filter_select="rdft"
3221 flite_filter_deps="libflite"
3222 framerate_filter_select="pixelutils"
3223 frei0r_filter_deps="frei0r libdl"
3224 frei0r_src_filter_deps="frei0r libdl"
3225 fspp_filter_deps="gpl"
3226 geq_filter_deps="gpl"
3227 histeq_filter_deps="gpl"
3228 hqdn3d_filter_deps="gpl"
3229 interlace_filter_deps="gpl"
3230 kerndeint_filter_deps="gpl"
3231 ladspa_filter_deps="ladspa libdl"
3232 mcdeint_filter_deps="avcodec gpl"
3233 movie_filter_deps="avcodec avformat"
3234 mpdecimate_filter_deps="gpl"
3235 mpdecimate_filter_select="pixelutils"
3236 mptestsrc_filter_deps="gpl"
3237 negate_filter_deps="lut_filter"
3238 nnedi_filter_deps="gpl"
3239 ocr_filter_deps="libtesseract"
3240 ocv_filter_deps="libopencv"
3241 overlay_qsv_filter_deps="libmfx"
3242 overlay_qsv_filter_select="qsvvpp"
3243 owdenoise_filter_deps="gpl"
3244 pan_filter_deps="swresample"
3245 perspective_filter_deps="gpl"
3246 phase_filter_deps="gpl"
3247 pp7_filter_deps="gpl"
3248 pp_filter_deps="gpl postproc"
3249 pullup_filter_deps="gpl"
3250 removelogo_filter_deps="avcodec avformat swscale"
3251 repeatfields_filter_deps="gpl"
3252 resample_filter_deps="avresample"
3253 rubberband_filter_deps="librubberband"
3254 sab_filter_deps="gpl swscale"
3255 scale2ref_filter_deps="swscale"
3256 scale_filter_deps="swscale"
3257 scale_qsv_filter_deps="libmfx"
3258 select_filter_select="pixelutils"
3259 showcqt_filter_deps="avcodec avformat swscale"
3260 showcqt_filter_suggest="libfontconfig libfreetype"
3261 showcqt_filter_select="fft"
3262 showfreqs_filter_deps="avcodec"
3263 showfreqs_filter_select="fft"
3264 showspectrum_filter_deps="avcodec"
3265 showspectrum_filter_select="fft"
3266 showspectrumpic_filter_deps="avcodec"
3267 showspectrumpic_filter_select="fft"
3268 signature_filter_deps="gpl avcodec avformat"
3269 smartblur_filter_deps="gpl swscale"
3270 sofalizer_filter_deps="libmysofa avcodec"
3271 sofalizer_filter_select="fft"
3272 spectrumsynth_filter_deps="avcodec"
3273 spectrumsynth_filter_select="fft"
3274 spp_filter_deps="gpl avcodec"
3275 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3276 stereo3d_filter_deps="gpl"
3277 subtitles_filter_deps="avformat avcodec libass"
3278 super2xsai_filter_deps="gpl"
3279 pixfmts_super2xsai_test_deps="super2xsai_filter"
3280 tinterlace_filter_deps="gpl"
3281 tinterlace_merge_test_deps="tinterlace_filter"
3282 tinterlace_pad_test_deps="tinterlace_filter"
3283 tonemap_filter_deps="const_nan"
3284 uspp_filter_deps="gpl avcodec"
3285 unsharp_filter_suggest="opencl"
3286 vaguedenoiser_filter_deps="gpl"
3287 vidstabdetect_filter_deps="libvidstab"
3288 vidstabtransform_filter_deps="libvidstab"
3289 libvmaf_filter_deps="libvmaf"
3290 zmq_filter_deps="libzmq"
3291 zoompan_filter_deps="swscale"
3292 zscale_filter_deps="libzimg const_nan"
3293 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3294 vpp_qsv_filter_deps="libmfx"
3295 vpp_qsv_filter_select="qsvvpp"
3296
3297 # examples
3298 avio_dir_cmd_deps="avformat avutil"
3299 avio_reading_deps="avformat avcodec avutil"
3300 decode_audio_example_deps="avcodec avutil"
3301 decode_video_example_deps="avcodec avutil"
3302 demuxing_decoding_example_deps="avcodec avformat avutil"
3303 encode_audio_example_deps="avcodec avutil"
3304 encode_video_example_deps="avcodec avutil"
3305 extract_mvs_example_deps="avcodec avformat avutil"
3306 filter_audio_example_deps="avfilter avutil"
3307 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3308 filtering_video_example_deps="avfilter avcodec avformat avutil"
3309 http_multiclient_example_deps="avformat avutil fork"
3310 hw_decode_example_deps="avcodec avformat avutil"
3311 metadata_example_deps="avformat avutil"
3312 muxing_example_deps="avcodec avformat avutil swscale"
3313 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3314 remuxing_example_deps="avcodec avformat avutil"
3315 resampling_audio_example_deps="avutil swresample"
3316 scaling_video_example_deps="avutil swscale"
3317 transcode_aac_example_deps="avcodec avformat swresample"
3318 transcoding_example_deps="avfilter avcodec avformat avutil"
3319
3320 # EXTRALIBS_LIST
3321 cpu_init_extralibs="pthreads_extralibs"
3322 cws2fws_extralibs="zlib_extralibs"
3323
3324 # libraries, in linking order
3325 avcodec_deps="avutil"
3326 avcodec_suggest="libm"
3327 avcodec_select="null_bsf"
3328 avdevice_deps="avformat avcodec avutil"
3329 avdevice_suggest="libm"
3330 avfilter_deps="avutil"
3331 avfilter_suggest="libm"
3332 avformat_deps="avcodec avutil"
3333 avformat_suggest="libm network zlib"
3334 avresample_deps="avutil"
3335 avresample_suggest="libm"
3336 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3337 postproc_deps="avutil gpl"
3338 postproc_suggest="libm"
3339 swresample_deps="avutil"
3340 swresample_suggest="libm libsoxr"
3341 swscale_deps="avutil"
3342 swscale_suggest="libm"
3343
3344 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3345 avfilter_extralibs="pthreads_extralibs"
3346 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3347
3348 # programs
3349 ffmpeg_deps="avcodec avfilter avformat swresample"
3350 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3351                null_filter
3352                trim_filter"
3353 ffmpeg_suggest="ole32 psapi shell32"
3354 ffplay_deps="avcodec avformat swscale swresample sdl2"
3355 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3356 ffplay_suggest="shell32"
3357 ffprobe_deps="avcodec avformat"
3358 ffprobe_suggest="shell32"
3359 ffserver_deps="avformat fork sarestart"
3360 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3361
3362 # documentation
3363 podpages_deps="perl"
3364 manpages_deps="perl pod2man"
3365 htmlpages_deps="perl"
3366 htmlpages_deps_any="makeinfo_html texi2html"
3367 txtpages_deps="perl makeinfo"
3368 doc_deps_any="manpages htmlpages podpages txtpages"
3369
3370 # default parameters
3371
3372 logfile="ffbuild/config.log"
3373
3374 # installation paths
3375 prefix_default="/usr/local"
3376 bindir_default='${prefix}/bin'
3377 datadir_default='${prefix}/share/ffmpeg'
3378 docdir_default='${prefix}/share/doc/ffmpeg'
3379 incdir_default='${prefix}/include'
3380 libdir_default='${prefix}/lib'
3381 mandir_default='${prefix}/share/man'
3382
3383 # toolchain
3384 ar_default="ar"
3385 cc_default="gcc"
3386 cxx_default="g++"
3387 host_cc_default="gcc"
3388 doxygen_default="doxygen"
3389 install="install"
3390 ln_s_default="ln -s -f"
3391 nm_default="nm -g"
3392 pkg_config_default=pkg-config
3393 ranlib_default="ranlib"
3394 strip_default="strip"
3395 version_script='--version-script'
3396 objformat="elf32"
3397 x86asmexe_default="nasm"
3398 windres_default="windres"
3399 nvcc_default="nvcc"
3400 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3401 striptype="direct"
3402
3403 # OS
3404 target_os_default=$(tolower $(uname -s))
3405 host_os=$target_os_default
3406
3407 # machine
3408 if test "$target_os_default" = aix; then
3409     arch_default=$(uname -p)
3410     strip_default="strip -X32_64"
3411 else
3412     arch_default=$(uname -m)
3413 fi
3414 cpu="generic"
3415 intrinsics="none"
3416
3417 # configurable options
3418 enable $PROGRAM_LIST
3419 enable $DOCUMENT_LIST
3420 enable $EXAMPLE_LIST
3421 enable $(filter_out avresample $LIBRARY_LIST)
3422 enable stripping
3423
3424 enable asm
3425 enable debug
3426 enable doc
3427 enable faan faandct faanidct
3428 enable optimizations
3429 enable runtime_cpudetect
3430 enable safe_bitstream_reader
3431 enable static
3432 enable swscale_alpha
3433 enable valgrind_backtrace
3434
3435 sws_max_filter_size_default=256
3436 set_default sws_max_filter_size
3437
3438 # internal components are enabled by default
3439 enable $EXTRALIBS_LIST
3440
3441 # Avoid external, non-system, libraries getting enabled by dependency resolution
3442 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3443
3444 # build settings
3445 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3446 LIBPREF="lib"
3447 LIBSUF=".a"
3448 FULLNAME='$(NAME)$(BUILDSUF)'
3449 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3450 SLIBPREF="lib"
3451 SLIBSUF=".so"
3452 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3453 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3454 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3455 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3456 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3457 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3458 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3459
3460 asflags_filter=echo
3461 cflags_filter=echo
3462 ldflags_filter=echo
3463
3464 AS_C='-c'
3465 AS_O='-o $@'
3466 CC_C='-c'
3467 CC_E='-E -o $@'
3468 CC_O='-o $@'
3469 CXX_C='-c'
3470 CXX_O='-o $@'
3471 OBJCC_C='-c'
3472 OBJCC_E='-E -o $@'
3473 OBJCC_O='-o $@'
3474 X86ASM_O='-o $@'
3475 LD_O='-o $@'
3476 LD_LIB='-l%'
3477 LD_PATH='-L'
3478 HOSTCC_C='-c'
3479 HOSTCC_E='-E -o $@'
3480 HOSTCC_O='-o $@'
3481 HOSTLD_O='-o $@'
3482 NVCC_C='-c'
3483 NVCC_O='-o $@'
3484
3485 host_extralibs='-lm'
3486 host_cflags_filter=echo
3487 host_ldflags_filter=echo
3488
3489 target_path='$(CURDIR)'
3490
3491 # since the object filename is not given with the -MM flag, the compiler
3492 # is only able to print the basename, and we must add the path ourselves
3493 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3494 DEPFLAGS='-MM'
3495
3496 mkdir -p ffbuild
3497
3498 # find source path
3499 if test -f configure; then
3500     source_path=.
3501 else
3502     source_path=$(cd $(dirname "$0"); pwd)
3503     case "$source_path" in
3504         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3505     esac
3506     test -e "$source_path/config.h" &&
3507         die "Out of tree builds are impossible with config.h in source dir."
3508 fi
3509
3510 for v in "$@"; do
3511     r=${v#*=}
3512     l=${v%"$r"}
3513     r=$(sh_quote "$r")
3514     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3515 done
3516
3517 find_things(){
3518     thing=$1
3519     pattern=$2
3520     file=$source_path/$3
3521     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3522 }
3523
3524 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3525 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3526 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3527 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3528 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3529 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3530 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3531 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3532 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3533
3534 find_things_extern(){
3535     thing=$1
3536     pattern=$2
3537     file=$source_path/$3
3538     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3539 }
3540
3541 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3542 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3543
3544 AVCODEC_COMPONENTS_LIST="
3545     $BSF_LIST
3546     $DECODER_LIST
3547     $ENCODER_LIST
3548     $HWACCEL_LIST
3549     $PARSER_LIST
3550 "
3551
3552 AVDEVICE_COMPONENTS_LIST="
3553     $INDEV_LIST
3554     $OUTDEV_LIST
3555 "
3556
3557 AVFILTER_COMPONENTS_LIST="
3558     $FILTER_LIST
3559 "
3560
3561 AVFORMAT_COMPONENTS_LIST="
3562     $DEMUXER_LIST
3563     $MUXER_LIST
3564     $PROTOCOL_LIST
3565 "
3566
3567 ALL_COMPONENTS="
3568     $AVCODEC_COMPONENTS_LIST
3569     $AVDEVICE_COMPONENTS_LIST
3570     $AVFILTER_COMPONENTS_LIST
3571     $AVFORMAT_COMPONENTS_LIST
3572 "
3573
3574 for n in $COMPONENT_LIST; do
3575     v=$(toupper ${n%s})_LIST
3576     eval enable \$$v
3577     eval ${n}_if_any="\$$v"
3578 done
3579
3580 enable $ARCH_EXT_LIST
3581
3582 die_unknown(){
3583     echo "Unknown option \"$1\"."
3584     echo "See $0 --help for available options."
3585     exit 1
3586 }
3587
3588 print_in_columns() {
3589     cols=$(expr $ncols / 24)
3590     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3591 }
3592
3593 show_list() {
3594     suffix=_$1
3595     shift
3596     echo $* | sed s/$suffix//g | print_in_columns
3597     exit 0
3598 }
3599
3600 rand_list(){
3601     IFS=', '
3602     set -- $*
3603     unset IFS
3604     for thing; do
3605         comp=${thing%:*}
3606         prob=${thing#$comp}
3607         prob=${prob#:}
3608         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3609         echo "prob ${prob:-0.5}"
3610         printf '%s\n' $comp
3611     done
3612 }
3613
3614 do_random(){
3615     action=$1
3616     shift
3617     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3618     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3619 }
3620
3621 for opt do
3622     optval="${opt#*=}"
3623     case "$opt" in
3624         --extra-ldflags=*)
3625             add_ldflags $optval
3626         ;;
3627         --extra-ldexeflags=*)
3628             add_ldexeflags $optval
3629         ;;
3630         --extra-ldsoflags=*)
3631             add_ldsoflags $optval
3632         ;;
3633         --extra-ldlibflags=*)
3634             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3635                  "removed in the future. Use --extra-ldsoflags instead."
3636             add_ldsoflags $optval
3637         ;;
3638         --extra-libs=*)
3639             add_extralibs $optval
3640         ;;
3641         --disable-devices)
3642             disable $INDEV_LIST $OUTDEV_LIST
3643         ;;
3644         --enable-debug=*)
3645             debuglevel="$optval"
3646         ;;
3647         --disable-programs)
3648             disable $PROGRAM_LIST
3649         ;;
3650         --disable-everything)
3651             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3652         ;;
3653         --disable-all)
3654             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3655             disable $LIBRARY_LIST $PROGRAM_LIST doc
3656             enable avutil
3657         ;;
3658         --enable-random|--disable-random)
3659             action=${opt%%-random}
3660             do_random ${action#--} $COMPONENT_LIST
3661         ;;
3662         --enable-random=*|--disable-random=*)
3663             action=${opt%%-random=*}
3664             do_random ${action#--} $optval
3665         ;;
3666         --enable-sdl)
3667             enable sdl2
3668         ;;
3669         --enable-*=*|--disable-*=*)
3670             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3671             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3672             eval list=\$$(toupper $thing)_LIST
3673             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3674             list=$(filter "$name" $list)
3675             [ "$list" = "" ] && warn "Option $opt did not match anything"
3676             $action $list
3677         ;;
3678         --enable-yasm|--disable-yasm)
3679             warn "The ${opt} option is only provided for compatibility and will be\n"\
3680                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3681             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3682         ;;
3683         --yasmexe=*)
3684             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3685                  "removed in the future. Use --x86asmexe instead."
3686             x86asmexe="$optval"
3687         ;;
3688         --enable-?*|--disable-?*)
3689             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3690             if is_in $option $COMPONENT_LIST; then
3691                 test $action = disable && action=unset
3692                 eval $action \$$(toupper ${option%s})_LIST
3693             elif is_in $option $CMDLINE_SELECT; then
3694                 $action $option
3695             else
3696                 die_unknown $opt
3697             fi
3698         ;;
3699         --list-*)
3700             NAME="${opt#--list-}"
3701             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3702             NAME=${NAME%s}
3703             eval show_list $NAME \$$(toupper $NAME)_LIST
3704         ;;
3705         --help|-h) show_help
3706         ;;
3707         --quiet|-q) quiet=yes
3708         ;;
3709         --fatal-warnings) enable fatal_warnings
3710         ;;
3711         --libfuzzer=*)
3712             libfuzzer_path="$optval"
3713         ;;
3714         *)
3715             optname="${opt%%=*}"
3716             optname="${optname#--}"
3717             optname=$(echo "$optname" | sed 's/-/_/g')
3718             if is_in $optname $CMDLINE_SET; then
3719                 eval $optname='$optval'
3720             elif is_in $optname $CMDLINE_APPEND; then
3721                 append $optname "$optval"
3722             else
3723                 die_unknown $opt
3724             fi
3725         ;;
3726     esac
3727 done
3728
3729 for e in $env; do
3730     eval "export $e"
3731 done
3732
3733 if disabled autodetect; then
3734
3735     # Unless iconv is explicitely disabled by the user, we still want to probe
3736     # for the iconv from the libc.
3737     disabled iconv || enable libc_iconv
3738
3739     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3740     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3741 fi
3742 # Mark specifically enabled, but normally autodetected libraries as requested.
3743 for lib in $AUTODETECT_LIBS; do
3744     enabled $lib && request $lib
3745 done
3746 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3747 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3748 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3749
3750 disabled logging && logfile=/dev/null
3751
3752 # command line configuration sanity checks
3753
3754 # we need to build at least one lib type
3755 if ! enabled_any static shared; then
3756     cat <<EOF
3757 At least one library type must be built.
3758 Specify --enable-static to build the static libraries or --enable-shared to
3759 build the shared libraries as well. To only build the shared libraries specify
3760 --disable-static in addition to --enable-shared.
3761 EOF
3762     exit 1
3763 fi
3764
3765 die_license_disabled() {
3766     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3767 }
3768
3769 die_license_disabled_gpl() {
3770     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3771 }
3772
3773 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3774 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3775
3776 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3777 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3778
3779 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3780
3781 enabled_all gnutls openssl &&
3782     die "GnuTLS and OpenSSL must not be enabled at the same time."
3783
3784 # Disable all the library-specific components if the library itself
3785 # is disabled, see AVCODEC_LIST and following _LIST variables.
3786
3787 disable_components(){
3788     disabled ${1} && disable $(
3789         eval components="\$$(toupper ${1})_COMPONENTS"
3790         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3791     )
3792 }
3793
3794 map 'disable_components $v' $LIBRARY_LIST
3795
3796 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3797 set >> $logfile
3798
3799 test -n "$valgrind" && toolchain="valgrind-memcheck"
3800
3801 enabled ossfuzz && {
3802     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3803     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3804 }
3805
3806 case "$toolchain" in
3807     *-asan)
3808         cc_default="${toolchain%-asan}"
3809         add_cflags  -fsanitize=address
3810         add_ldflags -fsanitize=address
3811     ;;
3812     *-msan)
3813         cc_default="${toolchain%-msan}"
3814         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3815         add_ldflags -fsanitize=memory
3816     ;;
3817     *-tsan)
3818         cc_default="${toolchain%-tsan}"
3819         add_cflags  -fsanitize=thread -fPIE
3820         add_ldflags -fsanitize=thread -pie
3821         case "$toolchain" in
3822             gcc-tsan)
3823                 add_cflags  -fPIC
3824                 add_ldflags -fPIC
3825                 ;;
3826         esac
3827     ;;
3828     *-usan)
3829         cc_default="${toolchain%-usan}"
3830         add_cflags  -fsanitize=undefined
3831         add_ldflags -fsanitize=undefined
3832     ;;
3833     valgrind-*)
3834         target_exec_default="valgrind"
3835         case "$toolchain" in
3836             valgrind-massif)
3837                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3838                 ;;
3839             valgrind-memcheck)
3840                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3841                 ;;
3842         esac
3843     ;;
3844     msvc)
3845         # Check whether the current MSVC version needs the C99 converter.
3846         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3847         # support enough of C99 to build ffmpeg. Default to the new
3848         # behaviour if the regexp was unable to match anything, since this
3849         # successfully parses the version number of existing supported
3850         # versions that require the converter (MSVC 2010 and 2012).
3851         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3852         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3853             cc_default="cl"
3854             cxx_default="cl"
3855         else
3856             cc_default="c99wrap cl"
3857             cxx_default="c99wrap cl"
3858         fi
3859         ld_default="$source_path/compat/windows/mslink"
3860         nm_default="dumpbin -symbols"
3861         ar_default="lib"
3862         case "$arch" in
3863         aarch64|arm64)
3864             as_default="armasm64"
3865             ;;
3866         arm*)
3867             as_default="armasm"
3868             ;;
3869         esac
3870         target_os_default="win32"
3871         # Use a relative path for TMPDIR. This makes sure all the
3872         # ffconf temp files are written with a relative path, avoiding
3873         # issues with msys/win32 path conversion for MSVC parameters
3874         # such as -Fo<file> or -out:<file>.
3875         TMPDIR=.
3876     ;;
3877     icl)
3878         cc_default="icl"
3879         ld_default="xilink"
3880         nm_default="dumpbin -symbols"
3881         ar_default="xilib"
3882         target_os_default="win32"
3883         TMPDIR=.
3884     ;;
3885     gcov)
3886         add_cflags  -fprofile-arcs -ftest-coverage
3887         add_ldflags -fprofile-arcs -ftest-coverage
3888     ;;
3889     llvm-cov)
3890         add_cflags -fprofile-arcs -ftest-coverage
3891         add_ldflags --coverage
3892     ;;
3893     hardened)
3894         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3895         add_cflags   -fno-strict-overflow -fstack-protector-all
3896         add_ldflags  -Wl,-z,relro -Wl,-z,now
3897         add_cflags   -fPIE
3898         add_ldexeflags -fPIE -pie
3899     ;;
3900     ?*)
3901         die "Unknown toolchain $toolchain"
3902     ;;
3903 esac
3904
3905 if test -n "$cross_prefix"; then
3906     test -n "$arch" && test -n "$target_os" ||
3907         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3908     enable cross_compile
3909 fi
3910
3911 ar_default="${cross_prefix}${ar_default}"
3912 cc_default="${cross_prefix}${cc_default}"
3913 cxx_default="${cross_prefix}${cxx_default}"
3914 nm_default="${cross_prefix}${nm_default}"
3915 pkg_config_default="${cross_prefix}${pkg_config_default}"
3916 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3917     ranlib_default="${cross_prefix}${ranlib_default} -D"
3918 else
3919     ranlib_default="${cross_prefix}${ranlib_default}"
3920 fi
3921 strip_default="${cross_prefix}${strip_default}"
3922 windres_default="${cross_prefix}${windres_default}"
3923
3924 sysinclude_default="${sysroot}/usr/include"
3925
3926 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3927     target_exec target_os x86asmexe nvcc
3928 enabled cross_compile || host_cc_default=$cc
3929 set_default host_cc
3930
3931 pkg_config_fail_message=""
3932 if ! $pkg_config --version >/dev/null 2>&1; then
3933     warn "$pkg_config not found, library detection may fail."
3934     pkg_config=false
3935 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3936     pkg_config_fail_message="
3937 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3938 fi
3939
3940 if test $doxygen != $doxygen_default && \
3941   ! $doxygen --version >/dev/null 2>&1; then
3942     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3943 fi
3944
3945 exesuf() {
3946     case $1 in
3947         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3948     esac
3949 }
3950
3951 EXESUF=$(exesuf $target_os)
3952 HOSTEXESUF=$(exesuf $host_os)
3953
3954 # set temporary file name
3955 : ${TMPDIR:=$TEMPDIR}
3956 : ${TMPDIR:=$TMP}
3957 : ${TMPDIR:=/tmp}
3958
3959 if [ -n "$tempprefix" ] ; then
3960     mktemp(){
3961         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3962         echo "$tmpname"
3963         mkdir "$tmpname"
3964     }
3965 elif ! check_cmd mktemp -u XXXXXX; then
3966     # simple replacement for missing mktemp
3967     # NOT SAFE FOR GENERAL USE
3968     mktemp(){
3969         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3970         echo "$tmpname"
3971         mkdir "$tmpname"
3972     }
3973 fi
3974
3975 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3976     die "Unable to create temporary directory in $TMPDIR."
3977
3978 tmpfile(){
3979     tmp="${FFTMPDIR}/test"$2
3980     (set -C; exec > $tmp) 2> /dev/null ||
3981         die "Unable to create temporary file in $FFTMPDIR."
3982     eval $1=$tmp
3983 }
3984
3985 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3986 trap 'exit 2' INT
3987
3988 tmpfile TMPASM .asm
3989 tmpfile TMPC   .c
3990 tmpfile TMPCPP .cpp
3991 tmpfile TMPE   $EXESUF
3992 tmpfile TMPH   .h
3993 tmpfile TMPM   .m
3994 tmpfile TMPO   .o
3995 tmpfile TMPS   .S
3996 tmpfile TMPSH  .sh
3997 tmpfile TMPV   .ver
3998
3999 unset -f mktemp
4000
4001 chmod +x $TMPE
4002
4003 # make sure we can execute files in $TMPDIR
4004 cat > $TMPSH 2>> $logfile <<EOF
4005 #! /bin/sh
4006 EOF
4007 chmod +x $TMPSH >> $logfile 2>&1
4008 if ! $TMPSH >> $logfile 2>&1; then
4009     cat <<EOF
4010 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4011 variable to another directory and make sure that it is not mounted noexec.
4012 EOF
4013     die "Sanity test failed."
4014 fi
4015
4016 armasm_flags(){
4017     for flag; do
4018         case $flag in
4019             # Filter out MSVC cl.exe options from cflags that shouldn't
4020             # be passed to gas-preprocessor
4021             -M[TD]*)                                            ;;
4022             *)                  echo $flag                      ;;
4023         esac
4024    done
4025 }
4026
4027 cparser_flags(){
4028     for flag; do
4029         case $flag in
4030             -Wno-switch)             echo -Wno-switch-enum ;;
4031             -Wno-format-zero-length) ;;
4032             -Wdisabled-optimization) ;;
4033             -Wno-pointer-sign)       echo -Wno-other ;;
4034             *)                       echo $flag ;;
4035         esac
4036     done
4037 }
4038
4039 msvc_common_flags(){
4040     for flag; do
4041         case $flag in
4042             # In addition to specifying certain flags under the compiler
4043             # specific filters, they must be specified here as well or else the
4044             # generic catch all at the bottom will print the original flag.
4045             -Wall)                ;;
4046             -Wextra)              ;;
4047             -std=c99)             ;;
4048             # Common flags
4049             -fomit-frame-pointer) ;;
4050             -g)                   echo -Z7 ;;
4051             -fno-math-errno)      ;;
4052             -fno-common)          ;;
4053             -fno-signed-zeros)    ;;
4054             -fPIC)                ;;
4055             -mthumb)              ;;
4056             -march=*)             ;;
4057             -lz)                  echo zlib.lib ;;
4058             -lx264)               echo libx264.lib ;;
4059             -lstdc++)             ;;
4060             -l*)                  echo ${flag#-l}.lib ;;
4061             -LARGEADDRESSAWARE)   echo $flag ;;
4062             -L*)                  echo -libpath:${flag#-L} ;;
4063             *)                    echo $flag ;;
4064         esac
4065     done
4066 }
4067
4068 msvc_flags(){
4069     msvc_common_flags "$@"
4070     for flag; do
4071         case $flag in
4072             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4073                                        -wd4554 ;;
4074             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4075                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4076                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4077                                        -wd4307 \
4078                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4079         esac
4080     done
4081 }
4082
4083 icl_flags(){
4084     msvc_common_flags "$@"
4085     for flag; do
4086         case $flag in
4087             # Despite what Intel's documentation says -Wall, which is supported
4088             # on Windows, does enable remarks so disable them here.
4089             -Wall)                echo $flag -Qdiag-disable:remark ;;
4090             -std=c99)             echo -Qstd=c99 ;;
4091             -flto)                echo -ipo ;;
4092         esac
4093     done
4094 }
4095
4096 icc_flags(){
4097     for flag; do
4098         case $flag in
4099             -flto)                echo -ipo ;;
4100             *)                    echo $flag ;;
4101         esac
4102     done
4103 }
4104
4105 suncc_flags(){
4106     for flag; do
4107         case $flag in
4108             -march=*|-mcpu=*)
4109                 case "${flag#*=}" in
4110                     native)                   echo -xtarget=native       ;;
4111                     v9|niagara)               echo -xarch=sparc          ;;
4112                     ultrasparc)               echo -xarch=sparcvis       ;;
4113                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4114                     i586|pentium)             echo -xchip=pentium        ;;
4115                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4116                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4117                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4118                     pentium4*)          echo -xtarget=pentium4           ;;
4119                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4120                     *-sse3)             echo -xarch=sse3                 ;;
4121                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4122                     bonnell)                   echo -xarch=ssse3         ;;
4123                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4124                     westmere)                  echo -xtarget=westmere    ;;
4125                     silvermont)                echo -xarch=sse4_2        ;;
4126                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4127                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4128                                                echo -xarch=avx           ;;
4129                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4130                     btver1)                    echo -xarch=amdsse4a      ;;
4131                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4132                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4133                     k8|opteron|athlon64|athlon-fx)
4134                                                echo -xarch=sse2a         ;;
4135                     athlon*)                   echo -xarch=pentium_proa  ;;
4136                 esac
4137                 ;;
4138             -std=c99)             echo -xc99              ;;
4139             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4140             -fPIC)                echo -KPIC -xcode=pic32 ;;
4141             -W*,*)                echo $flag              ;;
4142             -f*-*|-W*|-mimpure-text)                      ;;
4143             -shared)              echo -G                 ;;
4144             *)                    echo $flag              ;;
4145         esac
4146     done
4147 }
4148
4149 probe_cc(){
4150     pfx=$1
4151     _cc=$2
4152     first=$3
4153
4154     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4155     unset _ld_o _ldflags _ld_lib _ld_path
4156     unset _depflags _DEPCMD _DEPFLAGS
4157     _flags_filter=echo
4158
4159     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4160         true # no-op to avoid reading stdin in following checks
4161     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4162         _type=llvm_gcc
4163         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4164         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4165         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4166         _cflags_speed='-O3'
4167         _cflags_size='-Os'
4168     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4169         _type=gcc
4170         gcc_version=$($_cc --version | head -n1)
4171         gcc_basever=$($_cc -dumpversion)
4172         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4173         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4174         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4175         case $gcc_basever in
4176             2) ;;
4177             2.*) ;;
4178             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4179         esac
4180         if [ "$first" = true ]; then
4181             case $gcc_basever in
4182                 4.2*)
4183                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4184             esac
4185         fi
4186         _cflags_speed='-O3'
4187         _cflags_size='-Os'
4188     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4189         _type=icc
4190         _ident=$($_cc --version | head -n1)
4191         _depflags='-MMD'
4192         _cflags_speed='-O3'
4193         _cflags_size='-Os'
4194         _cflags_noopt='-O1'
4195         _flags_filter=icc_flags
4196     elif $_cc -v 2>&1 | grep -q xlc; then
4197         _type=xlc
4198         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4199         _cflags_speed='-O5'
4200         _cflags_size='-O5 -qcompact'
4201     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4202         test -d "$sysroot" || die "No valid sysroot specified."
4203         _type=armcc
4204         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4205         armcc_conf="$PWD/armcc.conf"
4206         $_cc --arm_linux_configure                 \
4207              --arm_linux_config_file="$armcc_conf" \
4208              --configure_sysroot="$sysroot"        \
4209              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4210              die "Error creating armcc configuration file."
4211         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4212         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4213         as_default="${cross_prefix}gcc"
4214         _depflags='-MMD'
4215         _cflags_speed='-O3'
4216         _cflags_size='-Os'
4217     elif $_cc -v 2>&1 | grep -q clang; then
4218         _type=clang
4219         _ident=$($_cc --version 2>/dev/null | head -n1)
4220         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4221         _cflags_speed='-O3'
4222         _cflags_size='-Oz'
4223     elif $_cc -V 2>&1 | grep -q Sun; then
4224         _type=suncc
4225         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4226         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4227         _DEPFLAGS='-xM1 -xc99'
4228         _ldflags='-std=c99'
4229         _cflags_speed='-O5'
4230         _cflags_size='-O5 -xspace'
4231         _flags_filter=suncc_flags
4232     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4233         _type=pathscale
4234         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4235         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4236         _cflags_speed='-O2'
4237         _cflags_size='-Os'
4238         _flags_filter='filter_out -Wdisabled-optimization'
4239     elif $_cc -v 2>&1 | grep -q Open64; then
4240         _type=open64
4241         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4242         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4243         _cflags_speed='-O2'
4244         _cflags_size='-Os'
4245         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4246     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4247         _type=armasm
4248         _ident=$($_cc | head -n1)
4249         # 4509: "This form of conditional instruction is deprecated"
4250         _flags="-nologo -ignore 4509"
4251         _flags_filter=armasm_flags
4252     elif $_cc 2>&1 | grep -q Intel; then
4253         _type=icl
4254         _ident=$($_cc 2>&1 | head -n1)
4255         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4256         # Not only is O3 broken on 13.x+ but it is slower on all previous
4257         # versions (tested) as well.
4258         _cflags_speed="-O2"
4259         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4260         if $_cc 2>&1 | grep -q Linker; then
4261             _ld_o='-out:$@'
4262         else
4263             _ld_o='-Fe$@'
4264         fi
4265         _cc_o='-Fo$@'
4266         _cc_e='-P'
4267         _flags_filter=icl_flags
4268         _ld_lib='lib%.a'
4269         _ld_path='-libpath:'
4270         # -Qdiag-error to make icl error when seeing certain unknown arguments
4271         _flags='-nologo -Qdiag-error:4044,10157'
4272         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4273         # with MSVC which enables it by default.
4274         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4275         disable stripping
4276     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4277         # lld can emulate multiple different linkers; in ms link.exe mode,
4278         # the -? parameter gives the help output which contains an identifyable
4279         # string, while it gives an error in other modes.
4280         _type=lld-link
4281         # The link.exe mode doesn't have a switch for getting the version,
4282         # but we can force it back to gnu mode and get the version from there.
4283         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4284         _ld_o='-out:$@'
4285         _flags_filter=msvc_flags
4286         _ld_lib='lib%.a'
4287         _ld_path='-libpath:'
4288     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4289         _type=msvc
4290         _ident=$($_cc 2>&1 | head -n1)
4291         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4292         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4293         _cflags_speed="-O2"
4294         _cflags_size="-O1"
4295         _cflags_noopt="-O1"
4296         if $_cc -nologo- 2>&1 | grep -q Linker; then
4297             _ld_o='-out:$@'
4298         else
4299             _ld_o='-Fe$@'
4300         fi
4301         _cc_o='-Fo$@'
4302         _cc_e='-P -Fi$@'
4303         _flags_filter=msvc_flags
4304         _ld_lib='lib%.a'
4305         _ld_path='-libpath:'
4306         _flags='-nologo'
4307         disable stripping
4308     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4309         _type=cparser
4310         _ident=$($_cc --version | head -n1)
4311         _depflags='-MMD'
4312         _cflags_speed='-O4'
4313         _cflags_size='-O2'
4314         _flags_filter=cparser_flags
4315     fi
4316
4317     eval ${pfx}_type=\$_type
4318     eval ${pfx}_ident=\$_ident
4319 }
4320
4321 set_ccvars(){
4322     eval ${1}_C=\${_cc_c-\${${1}_C}}
4323     eval ${1}_E=\${_cc_e-\${${1}_E}}
4324     eval ${1}_O=\${_cc_o-\${${1}_O}}
4325
4326     if [ -n "$_depflags" ]; then
4327         eval ${1}_DEPFLAGS=\$_depflags
4328     else
4329         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4330         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4331         eval DEP${1}FLAGS=\$_flags
4332     fi
4333 }
4334
4335 probe_cc cc "$cc" "true"
4336 cflags_filter=$_flags_filter
4337 cflags_speed=$_cflags_speed
4338 cflags_size=$_cflags_size
4339 cflags_noopt=$_cflags_noopt
4340 add_cflags $_flags $_cflags
4341 cc_ldflags=$_ldflags
4342 set_ccvars CC
4343 set_ccvars CXX
4344
4345 probe_cc hostcc "$host_cc"
4346 host_cflags_filter=$_flags_filter
4347 host_cflags_speed=$_cflags_speed
4348 add_host_cflags  $_flags $_cflags
4349 set_ccvars HOSTCC
4350
4351 test -n "$cc_type" && enable $cc_type ||
4352     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4353
4354 : ${as_default:=$cc}
4355 : ${objcc_default:=$cc}
4356 : ${dep_cc_default:=$cc}
4357 : ${ld_default:=$cc}
4358 : ${host_ld_default:=$host_cc}
4359 set_default ar as objcc dep_cc ld ln_s host_ld windres
4360
4361 probe_cc as "$as"
4362 asflags_filter=$_flags_filter
4363 add_asflags $_flags $_cflags
4364 set_ccvars AS
4365
4366 probe_cc objcc "$objcc"
4367 objcflags_filter=$_flags_filter
4368 add_objcflags $_flags $_cflags
4369 set_ccvars OBJC
4370
4371 probe_cc ld "$ld"
4372 ldflags_filter=$_flags_filter
4373 add_ldflags $_flags $_ldflags
4374 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4375 LD_O=${_ld_o-$LD_O}
4376 LD_LIB=${_ld_lib-$LD_LIB}
4377 LD_PATH=${_ld_path-$LD_PATH}
4378
4379 probe_cc hostld "$host_ld"
4380 host_ldflags_filter=$_flags_filter
4381 add_host_ldflags $_flags $_ldflags
4382 HOSTLD_O=${_ld_o-$HOSTLD_O}
4383
4384 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4385     probe_cc depcc "$dep_cc"
4386     CCDEP=${_DEPCMD:-$DEPCMD}
4387     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4388     DEPCCFLAGS=$_flags
4389 fi
4390
4391 if $ar 2>&1 | grep -q Microsoft; then
4392     arflags="-nologo"
4393     ar_o='-out:$@'
4394 elif $ar 2>&1 | grep -q "\[D\] "; then
4395     arflags="rcD"
4396     ar_o='$@'
4397 else
4398     arflags="rc"
4399     ar_o='$@'
4400 fi
4401
4402 add_cflags $extra_cflags
4403 add_cxxflags $extra_cxxflags
4404 add_objcflags $extra_objcflags
4405 add_asflags $extra_cflags
4406
4407 if test -n "$sysroot"; then
4408     case "$cc_type" in
4409         gcc|llvm_gcc|clang)
4410             add_cppflags --sysroot="$sysroot"
4411             add_ldflags --sysroot="$sysroot"
4412         ;;
4413     esac
4414 fi
4415
4416 if test "$cpu" = host; then
4417     enabled cross_compile &&
4418         die "--cpu=host makes no sense when cross-compiling."
4419
4420     case "$cc_type" in
4421         gcc|llvm_gcc)
4422             check_native(){
4423                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4424                 sed -n "/cc1.*$1=/{
4425                             s/.*$1=\\([^ ]*\\).*/\\1/
4426                             p
4427                             q
4428                         }" $TMPE
4429             }
4430             cpu=$(check_native -march || check_native -mcpu)
4431         ;;
4432         clang)
4433             check_native(){
4434                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4435                 sed -n "/cc1.*-target-cpu /{
4436                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4437                             p
4438                             q
4439                         }" $TMPE
4440             }
4441             cpu=$(check_native -march)
4442         ;;
4443     esac
4444
4445     test "${cpu:-host}" = host &&
4446         die "--cpu=host not supported with compiler $cc"
4447 fi
4448
4449 # Deal with common $arch aliases
4450 case "$arch" in
4451     aarch64|arm64)
4452         arch="aarch64"
4453     ;;
4454     arm*|iPad*|iPhone*)
4455         arch="arm"
4456     ;;
4457     mips*|IP*)
4458         case "$arch" in
4459         *el)
4460             add_cppflags -EL
4461             add_ldflags -EL
4462         ;;
4463         *eb)
4464             add_cppflags -EB
4465             add_ldflags -EB
4466         ;;
4467         esac
4468         arch="mips"
4469     ;;
4470     parisc*|hppa*)
4471         arch="parisc"
4472     ;;
4473     "Power Macintosh"|ppc*|powerpc*)
4474         arch="ppc"
4475     ;;
4476     s390|s390x)
4477         arch="s390"
4478     ;;
4479     sh4|sh)
4480         arch="sh4"
4481     ;;
4482     sun4*|sparc*)
4483         arch="sparc"
4484     ;;
4485     tilegx|tile-gx)
4486         arch="tilegx"
4487     ;;
4488     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4489         arch="x86"
4490     ;;
4491 esac
4492
4493 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4494 enable $arch
4495
4496 # Add processor-specific flags
4497 if enabled aarch64; then
4498
4499     case $cpu in
4500         armv*)
4501             cpuflags="-march=$cpu"
4502         ;;
4503         *)
4504             cpuflags="-mcpu=$cpu"
4505         ;;
4506     esac
4507
4508 elif enabled alpha; then
4509
4510     cpuflags="-mcpu=$cpu"
4511
4512 elif enabled arm; then
4513
4514     check_arm_arch() {
4515         check_cpp_condition stddef.h \
4516             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4517             $cpuflags
4518     }
4519
4520     probe_arm_arch() {
4521         if   check_arm_arch 4;        then echo armv4
4522         elif check_arm_arch 4T;       then echo armv4t
4523         elif check_arm_arch 5;        then echo armv5
4524         elif check_arm_arch 5E;       then echo armv5e
4525         elif check_arm_arch 5T;       then echo armv5t
4526         elif check_arm_arch 5TE;      then echo armv5te
4527         elif check_arm_arch 5TEJ;     then echo armv5te
4528         elif check_arm_arch 6;        then echo armv6
4529         elif check_arm_arch 6J;       then echo armv6j
4530         elif check_arm_arch 6K;       then echo armv6k
4531         elif check_arm_arch 6Z;       then echo armv6z
4532         elif check_arm_arch 6ZK;      then echo armv6zk
4533         elif check_arm_arch 6T2;      then echo armv6t2
4534         elif check_arm_arch 7;        then echo armv7
4535         elif check_arm_arch 7A  7_A;  then echo armv7-a
4536         elif check_arm_arch 7S;       then echo armv7-a
4537         elif check_arm_arch 7R  7_R;  then echo armv7-r
4538         elif check_arm_arch 7M  7_M;  then echo armv7-m
4539         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4540         elif check_arm_arch 8A  8_A;  then echo armv8-a
4541         fi
4542     }
4543
4544     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4545
4546     case $cpu in
4547         armv*)
4548             cpuflags="-march=$cpu"
4549             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4550         ;;
4551         *)
4552             cpuflags="-mcpu=$cpu"
4553             case $cpu in
4554                 cortex-a*)                               subarch=armv7a  ;;
4555                 cortex-r*)                               subarch=armv7r  ;;
4556                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4557                 arm11*)                                  subarch=armv6   ;;
4558                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4559                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4560                 *)                             subarch=$(probe_arm_arch) ;;
4561             esac
4562         ;;
4563     esac
4564
4565     case "$subarch" in
4566         armv5t*)    enable fast_clz                ;;
4567         armv[6-8]*)
4568             enable fast_clz
4569             disabled fast_unaligned || enable fast_unaligned
4570             ;;
4571     esac
4572
4573 elif enabled avr32; then
4574
4575     case $cpu in
4576         ap7[02]0[0-2])
4577             subarch="avr32_ap"
4578             cpuflags="-mpart=$cpu"
4579         ;;
4580         ap)
4581             subarch="avr32_ap"
4582             cpuflags="-march=$cpu"
4583         ;;
4584         uc3[ab]*)
4585             subarch="avr32_uc"
4586             cpuflags="-mcpu=$cpu"
4587         ;;
4588         uc)
4589             subarch="avr32_uc"
4590             cpuflags="-march=$cpu"
4591         ;;
4592     esac
4593
4594 elif enabled bfin; then
4595
4596     cpuflags="-mcpu=$cpu"
4597
4598 elif enabled mips; then
4599
4600     cpuflags="-march=$cpu"
4601
4602     if [ "$cpu" != "generic" ]; then
4603         disable mips32r2
4604         disable mips32r5
4605         disable mips64r2
4606         disable mips32r6
4607         disable mips64r6
4608         disable loongson2
4609         disable loongson3
4610
4611         case $cpu in
4612             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4613                 enable mips32r2
4614                 disable msa
4615             ;;
4616             p5600|i6400|p6600)
4617                 disable mipsdsp
4618                 disable mipsdspr2
4619             ;;
4620             loongson*)
4621                 enable loongson2
4622                 enable loongson3
4623                 enable local_aligned
4624                 enable simd_align_16
4625                 enable fast_64bit
4626                 enable fast_clz
4627                 enable fast_cmov
4628                 enable fast_unaligned
4629                 disable aligned_stack
4630                 disable mipsfpu
4631                 disable mipsdsp
4632                 disable mipsdspr2
4633                 case $cpu in
4634                     loongson3*)
4635                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4636                     ;;
4637                     loongson2e)
4638                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4639                     ;;
4640                     loongson2f)
4641                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4642                     ;;
4643                 esac
4644             ;;
4645             *)
4646                 # Unknown CPU. Disable everything.
4647                 warn "unknown CPU. Disabling all MIPS optimizations."
4648                 disable mipsfpu
4649                 disable mipsdsp
4650                 disable mipsdspr2
4651                 disable msa
4652                 disable mmi
4653             ;;
4654         esac
4655
4656         case $cpu in
4657             24kc)
4658                 disable mipsfpu
4659                 disable mipsdsp
4660                 disable mipsdspr2
4661             ;;
4662             24kf*)
4663                 disable mipsdsp
4664                 disable mipsdspr2
4665             ;;
4666             24kec|34kc|1004kc)
4667                 disable mipsfpu
4668                 disable mipsdspr2
4669             ;;
4670             24kef*|34kf*|1004kf*)
4671                 disable mipsdspr2
4672             ;;
4673             74kc)
4674                 disable mipsfpu
4675             ;;
4676             p5600)
4677                 enable mips32r5
4678                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4679             ;;
4680             i6400)
4681                 enable mips64r6
4682                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4683             ;;
4684             p6600)
4685                 enable mips64r6
4686                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4687             ;;
4688         esac
4689     else
4690         # We do not disable anything. Is up to the user to disable the unwanted features.
4691         warn 'generic cpu selected'
4692     fi
4693
4694 elif enabled ppc; then
4695
4696     disable ldbrx
4697
4698     case $(tolower $cpu) in
4699         601|ppc601|powerpc601)
4700             cpuflags="-mcpu=601"
4701             disable altivec
4702         ;;
4703         603*|ppc603*|powerpc603*)
4704             cpuflags="-mcpu=603"
4705             disable altivec
4706         ;;
4707         604*|ppc604*|powerpc604*)
4708             cpuflags="-mcpu=604"
4709             disable altivec
4710         ;;
4711         g3|75*|ppc75*|powerpc75*)
4712             cpuflags="-mcpu=750"
4713             disable altivec
4714         ;;
4715         g4|745*|ppc745*|powerpc745*)
4716             cpuflags="-mcpu=7450"
4717             disable vsx
4718         ;;
4719         74*|ppc74*|powerpc74*)
4720             cpuflags="-mcpu=7400"
4721             disable vsx
4722         ;;
4723         g5|970|ppc970|powerpc970)
4724             cpuflags="-mcpu=970"
4725             disable vsx
4726         ;;
4727         power[3-6]*)
4728             cpuflags="-mcpu=$cpu"
4729             disable vsx
4730         ;;
4731         power[7-8]*)
4732             cpuflags="-mcpu=$cpu"
4733         ;;
4734         cell)
4735             cpuflags="-mcpu=cell"
4736             enable ldbrx
4737             disable vsx
4738         ;;
4739         e500mc)
4740             cpuflags="-mcpu=e500mc"
4741             disable altivec
4742         ;;
4743         e500v2)
4744             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4745             disable altivec
4746             disable dcbzl
4747         ;;
4748         e500)
4749             cpuflags="-mcpu=8540 -mhard-float"
4750             disable altivec
4751             disable dcbzl
4752         ;;
4753     esac
4754
4755 elif enabled sparc; then
4756
4757     case $cpu in
4758         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4759             cpuflags="-mcpu=$cpu"
4760         ;;
4761         ultrasparc*|niagara[234])
4762             cpuflags="-mcpu=$cpu"
4763         ;;
4764     esac
4765
4766 elif enabled x86; then
4767
4768     case $cpu in
4769         i[345]86|pentium)
4770             cpuflags="-march=$cpu"
4771             disable i686
4772             disable mmx
4773         ;;
4774         # targets that do NOT support nopl and conditional mov (cmov)
4775         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4776             cpuflags="-march=$cpu"
4777             disable i686
4778         ;;
4779         # targets that do support nopl and conditional mov (cmov)
4780         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4781         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4782         |amdfam10|barcelona|b[dt]ver*|znver*)
4783             cpuflags="-march=$cpu"
4784             enable i686
4785             enable fast_cmov
4786         ;;
4787         # targets that do support conditional mov but on which it's slow
4788         pentium4|pentium4m|prescott|nocona)
4789             cpuflags="-march=$cpu"
4790             enable i686
4791             disable fast_cmov
4792         ;;
4793     esac
4794
4795 fi
4796
4797 if [ "$cpu" != generic ]; then
4798     add_cflags  $cpuflags
4799     add_asflags $cpuflags
4800     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4801 fi
4802
4803 # compiler sanity check
4804 check_exec <<EOF
4805 int main(void){ return 0; }
4806 EOF
4807 if test "$?" != 0; then
4808     echo "$cc is unable to create an executable file."
4809     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4810         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4811         echo "Only do this if you know what cross compiling means."
4812     fi
4813     die "C compiler test failed."
4814 fi
4815
4816 add_cppflags -D_ISOC99_SOURCE
4817 add_cxxflags -D__STDC_CONSTANT_MACROS
4818 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4819
4820 # some compilers silently accept -std=c11, so we also need to check that the
4821 # version macro is defined properly
4822 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4823     add_cflags -std=c11 ||
4824     check_cflags -std=c99
4825
4826 check_cppflags -D_FILE_OFFSET_BITS=64
4827 check_cppflags -D_LARGEFILE_SOURCE
4828
4829 add_host_cppflags -D_ISOC99_SOURCE
4830 check_host_cflags -std=c99
4831 check_host_cflags -Wall
4832 check_host_cflags $host_cflags_speed
4833
4834 check_64bit(){
4835     arch32=$1
4836     arch64=$2
4837     expr=$3
4838     check_code cc "" "int test[2*($expr) - 1]" &&
4839         subarch=$arch64 || subarch=$arch32
4840     enable $subarch
4841 }
4842
4843 case "$arch" in
4844     aarch64|alpha|ia64)
4845         enabled shared && enable_weak pic
4846     ;;
4847     mips)
4848         check_64bit mips mips64 '_MIPS_SIM > 1'
4849         enabled shared && enable_weak pic
4850     ;;
4851     parisc)
4852         check_64bit parisc parisc64 'sizeof(void *) > 4'
4853         enabled shared && enable_weak pic
4854     ;;
4855     ppc)
4856         check_64bit ppc ppc64 'sizeof(void *) > 4'
4857         enabled shared && enable_weak pic
4858     ;;
4859     s390)
4860         check_64bit s390 s390x 'sizeof(void *) > 4'
4861         enabled shared && enable_weak pic
4862     ;;
4863     sparc)
4864         check_64bit sparc sparc64 'sizeof(void *) > 4'
4865         enabled shared && enable_weak pic
4866     ;;
4867     x86)
4868         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4869         # Treat x32 as x64 for now. Note it also needs pic if shared
4870         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4871             subarch=x86_64 && enable x86_64 && disable x86_32
4872         if enabled x86_64; then
4873             enabled shared && enable_weak pic
4874             objformat=elf64
4875         fi
4876     ;;
4877 esac
4878
4879 # OS specific
4880 case $target_os in
4881     aix)
4882         SHFLAGS=-shared
4883         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4884         enabled shared && add_ldflags -Wl,-brtl
4885         arflags='-Xany -r -c'
4886         ;;
4887     android)
4888         disable symver
4889         enable section_data_rel_ro
4890         SLIB_INSTALL_NAME='$(SLIBNAME)'
4891         SLIB_INSTALL_LINKS=
4892         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4893         ;;
4894     haiku)
4895         prefix_default="/boot/common"
4896         network_extralibs="-lnetwork"
4897         host_extralibs=
4898         ;;
4899     sunos)
4900         SHFLAGS='-shared -Wl,-h,$$(@F)'
4901         enabled x86 && append SHFLAGS -mimpure-text
4902         network_extralibs="-lsocket -lnsl"
4903         add_cppflags -D__EXTENSIONS__
4904         # When using suncc to build, the Solaris linker will mark
4905         # an executable with each instruction set encountered by
4906         # the Solaris assembler.  As our libraries contain their own
4907         # guards for processor-specific code, instead suppress
4908         # generation of the HWCAPS ELF section on Solaris x86 only.
4909         enabled_all suncc x86 &&
4910             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4911             add_ldflags -Wl,-M,mapfile
4912         nm_default='nm -P -g'
4913         version_script='-M'
4914         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4915         ;;
4916     netbsd)
4917         disable symver
4918         oss_indev_extralibs="-lossaudio"
4919         oss_outdev_extralibs="-lossaudio"
4920         enabled gcc || check_ldflags -Wl,-zmuldefs
4921         ;;
4922     openbsd|bitrig)
4923         disable symver
4924         SHFLAGS='-shared'
4925         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4926         SLIB_INSTALL_LINKS=
4927         oss_indev_extralibs="-lossaudio"
4928         oss_outdev_extralibs="-lossaudio"
4929         ;;
4930     dragonfly)
4931         disable symver
4932         ;;
4933     freebsd)
4934         ;;
4935     bsd/os)
4936         add_extralibs -lpoll -lgnugetopt
4937         strip="strip -d"
4938         ;;
4939     darwin)
4940         enabled ppc && add_asflags -force_cpusubtype_ALL
4941         install_name_dir_default='$(SHLIBDIR)'
4942         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4943         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4944         strip="${strip} -x"
4945         add_ldflags -Wl,-dynamic,-search_paths_first
4946         check_cflags -Werror=partial-availability
4947         SLIBSUF=".dylib"
4948         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4949         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4950         enabled x86_64 && objformat="macho64" || objformat="macho32"
4951         enabled_any pic shared x86_64 ||
4952             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4953         check_header dispatch/dispatch.h &&
4954             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4955         if test -n "$sysroot"; then
4956             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4957             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4958         fi
4959         version_script='-exported_symbols_list'
4960         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4961         ;;
4962     msys*)
4963         die "Native MSYS builds are discouraged, please use the MINGW environment."
4964         ;;
4965     mingw32*|mingw64*)
4966         target_os=mingw32
4967         if enabled shared; then
4968             # Cannot build both shared and static libs when using dllimport.
4969             disable static
4970         fi
4971         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4972         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4973         shlibdir_default="$bindir_default"
4974         SLIBPREF=""
4975         SLIBSUF=".dll"
4976         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4977         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4978         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4979         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4980         SLIB_INSTALL_LINKS=
4981         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4982         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4983         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4984         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4985         enabled x86_64 && objformat="win64" || objformat="win32"
4986         ranlib=:
4987         enable dos_paths
4988         check_ldflags -Wl,--nxcompat,--dynamicbase
4989         # Lets work around some stupidity in binutils.
4990         # ld will strip relocations from executables even though we need them
4991         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4992         # however ld then forgets what the entry point should be (oops) so we
4993         # have to manually (re)set it.
4994         if enabled x86_32; then
4995             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4996         elif enabled x86_64; then
4997             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4998             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4999             # Set image base >4GB for extra entropy with HEASLR
5000             add_ldexeflags -Wl,--image-base,0x140000000
5001             append SHFLAGS -Wl,--image-base,0x180000000
5002         fi
5003         ;;
5004     win32|win64)
5005         disable symver
5006         if enabled shared; then
5007             # Link to the import library instead of the normal static library
5008             # for shared libs.
5009             LD_LIB='%.lib'
5010             # Cannot build both shared and static libs with MSVC or icl.
5011             disable static
5012         fi
5013         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5014         shlibdir_default="$bindir_default"
5015         SLIBPREF=""
5016         SLIBSUF=".dll"
5017         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5018         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5019         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5020         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5021         SLIB_INSTALL_LINKS=
5022         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5023         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5024         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5025         enabled x86_64 && objformat="win64" || objformat="win32"
5026         ranlib=:
5027         enable dos_paths
5028         ;;
5029     cygwin*)
5030         target_os=cygwin
5031         shlibdir_default="$bindir_default"
5032         SLIBPREF="cyg"
5033         SLIBSUF=".dll"
5034         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5035         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5036         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5037         SLIB_INSTALL_LINKS=
5038         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5039         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5040         enabled x86_64 && objformat="win64" || objformat="win32"
5041         enable dos_paths
5042         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5043         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5044         ;;
5045     *-dos|freedos|opendos)
5046         network_extralibs="-lsocket"
5047         objformat="coff"
5048         enable dos_paths
5049         add_cppflags -U__STRICT_ANSI__
5050         ;;
5051     linux)
5052         enable section_data_rel_ro
5053         enabled_any arm aarch64 && enable_weak linux_perf
5054         ;;
5055     irix*)
5056         target_os=irix
5057         ranlib="echo ignoring ranlib"
5058         ;;
5059     os/2*)
5060         strip="lxlite -CS"
5061         striptype=""
5062         objformat="aout"
5063         add_cppflags -D_GNU_SOURCE
5064         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5065         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5066         LIBSUF="_s.a"
5067         SLIBPREF=""
5068         SLIBSUF=".dll"
5069         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5070         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5071         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5072             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5073             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5074             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5075             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5076         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5077             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5078         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5079         SLIB_INSTALL_LINKS=
5080         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5081         enable dos_paths
5082         enable_weak os2threads
5083         ;;
5084     gnu/kfreebsd)
5085         add_cppflags -D_BSD_SOURCE
5086         ;;
5087     gnu)
5088         ;;
5089     qnx)
5090         add_cppflags -D_QNX_SOURCE
5091         network_extralibs="-lsocket"
5092         ;;
5093     symbian)
5094         SLIBSUF=".dll"
5095         enable dos_paths
5096         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5097         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5098         add_ldflags -Wl,--target1-abs,--no-undefined \
5099                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5100                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5101         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5102                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5103                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5104         ;;
5105     minix)
5106         ;;
5107     none)
5108         ;;
5109     *)
5110         die "Unknown OS '$target_os'."
5111         ;;
5112 esac
5113
5114 # test if creating links works
5115 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5116 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5117 mkdir "$link_dest"
5118 $ln_s "$link_dest" "$link_name"
5119 touch "$link_dest/test_file"
5120 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5121     # create link to source path
5122     [ -e src ] && rm src
5123     $ln_s "$source_path" src
5124     source_link=src
5125 else
5126     # creating directory links doesn't work
5127     # fall back to using the full source path
5128     source_link="$source_path"
5129 fi
5130 # cleanup
5131 rm -r "$link_dest"
5132 rm -r "$link_name"
5133
5134 # determine libc flavour
5135
5136 probe_libc(){
5137     pfx=$1
5138     pfx_no_=${pfx%_}
5139     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5140     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5141         eval ${pfx}libc_type=uclibc
5142         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5143     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5144         eval ${pfx}libc_type=glibc
5145         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5146     # MinGW headers can be installed on Cygwin, so check for newlib first.
5147     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5148         eval ${pfx}libc_type=newlib
5149         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5150     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5151     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5152         eval ${pfx}libc_type=mingw64
5153         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5154             add_compat msvcrt/snprintf.o
5155             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5156         fi
5157         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5158         eval test \$${pfx_no_}cc_type = "gcc" &&
5159             add_${pfx}cppflags -D__printf__=__gnu_printf__
5160     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5161          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5162         eval ${pfx}libc_type=mingw32
5163         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5164             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5165             die "ERROR: MinGW32 runtime version must be >= 3.15."
5166         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5167         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5168             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5169         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5170             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5171         eval test \$${pfx_no_}cc_type = "gcc" &&
5172             add_${pfx}cppflags -D__printf__=__gnu_printf__
5173     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5174         eval ${pfx}libc_type=msvcrt
5175         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5176             if [ "$pfx" = host_ ]; then
5177                 add_host_cppflags -Dsnprintf=_snprintf
5178             else
5179                 add_compat strtod.o strtod=avpriv_strtod
5180                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5181                                              _snprintf=avpriv_snprintf  \
5182                                              vsnprintf=avpriv_vsnprintf
5183             fi
5184         fi
5185         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5186         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5187         # 0x601 by default unless something else is set by the user.
5188         # This can easily lead to us detecting functions only present
5189         # in such new versions and producing binaries requiring windows 7.0.
5190         # Therefore explicitly set the default to XP unless the user has
5191         # set something else on the command line.
5192         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5193         # family. For these cases, configure is free to use any functions
5194         # found in the SDK headers by default. (Alternatively, we could force
5195         # _WIN32_WINNT to 0x0602 in that case.)
5196         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5197             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5198 #ifdef WINAPI_FAMILY
5199 #include <winapifamily.h>
5200 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5201 #error not desktop
5202 #endif
5203 #endif
5204 EOF
5205         if [ "$pfx" = "" ]; then
5206             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5207             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5208         fi
5209     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5210         eval ${pfx}libc_type=klibc
5211     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5212         eval ${pfx}libc_type=bionic
5213     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5214         eval ${pfx}libc_type=solaris
5215         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5216     fi
5217     check_${pfx}cc <<EOF
5218 #include <time.h>
5219 void *v = localtime_r;
5220 EOF
5221 test "$?" != 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
5222 #include <time.h>
5223 void *v = localtime_r;
5224 EOF
5225
5226     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5227 }
5228
5229 probe_libc
5230 probe_libc host_
5231
5232 # hacks for compiler/libc/os combinations
5233
5234 case $libc_type in
5235     bionic)
5236         add_compat strtod.o strtod=avpriv_strtod
5237         ;;
5238 esac
5239
5240 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5241     add_cppflags '-I\$(SRC_PATH)/compat/float'
5242
5243 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5244
5245 set_default libdir
5246 : ${shlibdir_default:="$libdir"}
5247 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5248
5249 set_default $PATHS_LIST
5250 set_default nm
5251
5252 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5253
5254 enable_weak_pic() {
5255     disabled pic && return
5256     enable pic
5257     add_cppflags -DPIC
5258     case "$target_os" in
5259     mingw*|cygwin*|win*)
5260         ;;
5261     *)
5262         add_cflags -fPIC
5263         add_asflags -fPIC
5264         ;;
5265     esac
5266 }
5267
5268 enabled pic && enable_weak_pic
5269
5270 check_cc <<EOF || die "Symbol mangling check failed."
5271 int ff_extern;
5272 EOF
5273 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5274 extern_prefix=${sym%%ff_extern*}
5275
5276 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5277
5278 _restrict=
5279 for restrict_keyword in restrict __restrict__ __restrict; do
5280     check_cc <<EOF && _restrict=$restrict_keyword && break
5281 void foo(char * $restrict_keyword p);
5282 EOF
5283 done
5284
5285 check_cc <<EOF && enable pragma_deprecated
5286 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5287 EOF
5288
5289 check_cc <<EOF || die "endian test failed"
5290 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5291 EOF
5292 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5293
5294 check_cc <<EOF && enable const_nan
5295 #include <math.h>
5296 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5297 EOF
5298
5299 if ! enabled ppc64 || enabled bigendian; then
5300     disable vsx
5301 fi
5302
5303 check_gas() {
5304     log "check_gas using '$as' as AS"
5305     # :vararg is used on aarch64, arm and ppc altivec
5306     check_as <<EOF || return 1
5307 .macro m n, y:vararg=0
5308 \n: .int \y
5309 .endm
5310 m x
5311 EOF
5312     # .altmacro is only used in arm asm
5313     ! enabled arm || check_as <<EOF || return 1
5314 .altmacro
5315 EOF
5316     enable gnu_as
5317     return 0
5318 }
5319
5320 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5321     nogas=:
5322     enabled_any arm aarch64 && nogas=die
5323     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5324     as_noop=-v
5325
5326     case $as_type in
5327         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5328         gcc)  gaspp_as_type=gas ;;
5329         *)    gaspp_as_type=$as_type ;;
5330     esac
5331
5332     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5333
5334     test "${as#*gas-preprocessor.pl}" != "$as" ||
5335     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5336         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5337
5338     if ! check_gas ; then
5339         as=${gas:=$as}
5340         check_gas || \
5341             $nogas "GNU assembler not found, install/update gas-preprocessor"
5342     fi
5343
5344     check_as <<EOF && enable as_func
5345 .func test
5346 .endfunc
5347 EOF
5348 fi
5349
5350 check_inline_asm inline_asm_labels '"1:\n"'
5351
5352 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5353
5354 if enabled aarch64; then
5355     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5356     # internal assembler in clang 3.3 does not support this instruction
5357     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5358     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5359
5360     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5361
5362 elif enabled alpha; then
5363
5364     check_cflags -mieee
5365
5366 elif enabled arm; then
5367
5368     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5369
5370     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5371 float func(float a, float b){ return a+b; }
5372 EOF
5373
5374     enabled thumb && check_cflags -mthumb || check_cflags -marm
5375
5376     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5377         enable vfp_args
5378     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5379         enable vfp_args
5380     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5381         case "${cross_prefix:-$cc}" in
5382             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5383             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5384 __asm__ (".eabi_attribute 28, 1");
5385 int main(void) { return 0; }
5386 EOF
5387         esac
5388         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5389     fi
5390
5391     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5392     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5393     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5394     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5395     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5396     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5397     enabled setend  && check_insn setend  'setend be'
5398
5399     [ $target_os = linux ] || [ $target_os = android ] ||
5400         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5401             $ARCH_EXT_LIST_ARM
5402
5403     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5404
5405     check_as <<EOF && enable as_arch_directive
5406 .arch armv7-a
5407 EOF
5408     check_as <<EOF && enable as_fpu_directive
5409 .fpu neon
5410 EOF
5411
5412     # llvm's integrated assembler supports .object_arch from llvm 3.5
5413     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5414         check_as <<EOF && enable as_object_arch
5415 .object_arch armv4
5416 EOF
5417
5418     # MS armasm fails to assemble our PIC constructs
5419     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5420
5421 elif enabled mips; then
5422
5423     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5424     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5425     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5426
5427     # Enable minimum ISA based on selected options
5428     if enabled mips64; then
5429         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5430         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5431         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5432     else
5433         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5434         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5435         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5436         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5437     fi
5438
5439     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5440     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5441     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5442     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5443     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5444
5445     if enabled bigendian && enabled msa; then
5446         disable msa
5447     fi
5448
5449 elif enabled parisc; then
5450
5451     if enabled gcc; then
5452         case $($cc -dumpversion) in
5453             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5454         esac
5455     fi
5456
5457 elif enabled ppc; then
5458
5459     enable local_aligned
5460
5461     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5462     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5463     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5464     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5465
5466     if enabled altivec; then
5467         check_cflags -maltivec -mabi=altivec
5468
5469         # check if our compiler supports Motorola AltiVec C API
5470         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5471                                  vector signed int v2 = (vector signed int) { 1 };
5472                                  v1 = vec_add(v1, v2);" ||
5473             disable altivec
5474
5475         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5476     fi
5477
5478     if enabled vsx; then
5479         check_cflags -mvsx &&
5480         check_code cc altivec.h "int v[4] = { 0 };
5481                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5482             disable vsx
5483     fi
5484
5485     if enabled power8; then
5486         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5487     fi
5488
5489 elif enabled x86; then
5490
5491     check_builtin rdtsc    intrin.h   "__rdtsc()"
5492     check_builtin mm_empty mmintrin.h "_mm_empty()"
5493
5494     enable local_aligned
5495
5496     # check whether EBP is available on x86
5497     # As 'i' is stored on the stack, this program will crash
5498     # if the base pointer is used to access it because the
5499     # base pointer is cleared in the inline assembly code.
5500     check_exec_crash <<EOF && enable ebp_available
5501 volatile int i=0;
5502 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5503 return i;
5504 EOF
5505
5506     # check whether EBX is available on x86
5507     check_inline_asm ebx_available '""::"b"(0)' &&
5508         check_inline_asm ebx_available '"":::"%ebx"'
5509
5510     # check whether xmm clobbers are supported
5511     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5512
5513     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5514         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5515
5516     # check whether binutils is new enough to compile SSSE3/MMXEXT
5517     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5518     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5519
5520     probe_x86asm(){
5521         x86asmexe_probe=$1
5522         if check_cmd $x86asmexe_probe -v; then
5523             x86asmexe=$x86asmexe_probe
5524             x86asm_type=nasm
5525             x86asm_debug="-g -F dwarf"
5526             X86ASMDEP=
5527             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5528         elif check_cmd $x86asmexe_probe --version; then
5529             x86asmexe=$x86asmexe_probe
5530             x86asm_type=yasm
5531             x86asm_debug="-g dwarf2"
5532             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5533             X86ASM_DEPFLAGS=
5534         fi
5535         check_x86asm "movbe ecx, [5]" && enable x86asm
5536     }
5537
5538     if ! disabled_any asm mmx x86asm; then
5539         disable x86asm
5540         for program in $x86asmexe nasm yasm; do
5541             probe_x86asm $program && break
5542         done
5543         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5544         X86ASMFLAGS="-f $objformat"
5545         enabled pic               && append X86ASMFLAGS "-DPIC"
5546         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5547         case "$objformat" in
5548             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5549         esac
5550
5551         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5552         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5553         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5554         check_x86asm "CPU amdnop" || disable cpunop
5555     fi
5556
5557     case "$cpu" in
5558         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5559             disable fast_clz
5560         ;;
5561     esac
5562
5563 fi
5564
5565 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5566
5567 check_ldflags -Wl,--as-needed
5568 check_ldflags -Wl,-z,noexecstack
5569
5570 if ! disabled network; then
5571     check_func getaddrinfo $network_extralibs
5572     check_func inet_aton $network_extralibs
5573
5574     check_type netdb.h "struct addrinfo"
5575     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5576     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5577     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5578     check_type poll.h "struct pollfd"
5579     check_type netinet/sctp.h "struct sctp_event_subscribe"
5580     check_struct "sys/socket.h" "struct msghdr" msg_flags
5581     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5582     check_type netinet/in.h "struct sockaddr_in6"
5583     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5584     check_type "sys/types.h sys/socket.h" socklen_t
5585
5586     # Prefer arpa/inet.h over winsock2
5587     if check_header arpa/inet.h ; then
5588         check_func closesocket
5589     elif check_header winsock2.h ; then
5590         check_func_headers winsock2.h closesocket -lws2 &&
5591             network_extralibs="-lws2" ||
5592         { check_func_headers winsock2.h closesocket -lws2_32 &&
5593             network_extralibs="-lws2_32"; } || disable winsock2_h network
5594         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5595
5596         check_type ws2tcpip.h socklen_t
5597         check_type ws2tcpip.h "struct addrinfo"
5598         check_type ws2tcpip.h "struct group_source_req"
5599         check_type ws2tcpip.h "struct ip_mreq_source"
5600         check_type ws2tcpip.h "struct ipv6_mreq"
5601         check_type winsock2.h "struct pollfd"
5602         check_struct winsock2.h "struct sockaddr" sa_len
5603         check_type ws2tcpip.h "struct sockaddr_in6"
5604         check_type ws2tcpip.h "struct sockaddr_storage"
5605     else
5606         disable network
5607     fi
5608 fi
5609
5610 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5611 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5612 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5613 check_builtin sarestart signal.h "SA_RESTART"
5614 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5615 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5616 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5617 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5618
5619 case "$custom_allocator" in
5620     jemalloc)
5621         # jemalloc by default does not use a prefix
5622         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5623     ;;
5624     tcmalloc)
5625         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5626         malloc_prefix=tc_
5627     ;;
5628 esac
5629
5630 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5631 check_func  ${malloc_prefix}memalign            && enable memalign
5632 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5633
5634 check_func  access
5635 check_func_headers stdlib.h arc4random
5636 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5637 check_func  fcntl
5638 check_func  fork
5639 check_func  gethrtime
5640 check_func  getopt
5641 check_func  getrusage
5642 check_func  gettimeofday
5643 check_func  isatty
5644 check_func  mkstemp
5645 check_func  mmap
5646 check_func  mprotect
5647 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5648 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5649 check_func  sched_getaffinity
5650 check_func  setrlimit
5651 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5652 check_func  strerror_r
5653 check_func  sysconf
5654 check_func  sysctl
5655 check_func  usleep
5656
5657 check_func_headers conio.h kbhit
5658 check_func_headers io.h setmode
5659 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5660 check_func_headers mach/mach_time.h mach_absolute_time
5661 check_func_headers stdlib.h getenv
5662 check_func_headers sys/stat.h lstat
5663
5664 check_func_headers windows.h GetProcessAffinityMask
5665 check_func_headers windows.h GetProcessTimes
5666 check_func_headers windows.h GetSystemTimeAsFileTime
5667 check_func_headers windows.h LoadLibrary
5668 check_func_headers windows.h MapViewOfFile
5669 check_func_headers windows.h PeekNamedPipe
5670 check_func_headers windows.h SetConsoleTextAttribute
5671 check_func_headers windows.h SetConsoleCtrlHandler
5672 check_func_headers windows.h Sleep
5673 check_func_headers windows.h VirtualAlloc
5674 check_struct windows.h "CONDITION_VARIABLE" Ptr
5675 check_func_headers glob.h glob
5676 enabled xlib &&
5677     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5678
5679 check_header direct.h
5680 check_header dirent.h
5681 check_header dxgidebug.h
5682 check_header dxva.h
5683 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5684 check_header io.h
5685 check_header libcrystalhd/libcrystalhd_if.h
5686 check_header malloc.h
5687 check_header net/udplite.h
5688 check_header poll.h
5689 check_header sys/param.h
5690 check_header sys/resource.h
5691 check_header sys/select.h
5692 check_header sys/time.h
5693 check_header sys/un.h
5694 check_header termios.h
5695 check_header unistd.h
5696 check_header valgrind/valgrind.h
5697 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5698 check_header windows.h
5699 check_header X11/extensions/XvMClib.h
5700 check_header asm/types.h
5701
5702 # it seems there are versions of clang in some distros that try to use the
5703 # gcc headers, which explodes for stdatomic
5704 # so we also check that atomics actually work here
5705 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5706
5707 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5708 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5709 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5710 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5711 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5712
5713 enabled appkit       && check_apple_framework AppKit
5714 enabled audiotoolbox && check_apple_framework AudioToolbox
5715 enabled avfoundation && check_apple_framework AVFoundation
5716 enabled coreimage    && check_apple_framework CoreImage
5717 enabled videotoolbox && check_apple_framework VideoToolbox
5718
5719 check_apple_framework CoreFoundation
5720 check_apple_framework CoreMedia
5721 check_apple_framework CoreVideo
5722
5723 enabled avfoundation && {
5724     disable coregraphics applicationservices
5725     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5726     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5727
5728 enabled videotoolbox && {
5729     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5730     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5731 }
5732
5733 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5734
5735 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5736 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5737 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5738 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5739 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5740
5741 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5742 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5743 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5744 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5745 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5746 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5747 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5748 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5749 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5750
5751 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5752
5753 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5754
5755 if ! disabled w32threads && ! enabled pthreads; then
5756     check_func_headers "windows.h process.h" _beginthreadex &&
5757         enable w32threads || disable w32threads
5758     if ! enabled w32threads && enabled winrt; then
5759         check_func_headers "windows.h" CreateThread &&
5760             enable w32threads || disable w32threads
5761     fi
5762 fi
5763
5764 # check for some common methods of building with pthread support
5765 # do this before the optional library checks as some of them require pthreads
5766 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5767     if check_lib pthreads pthread.h pthread_join   -pthread &&
5768        check_lib pthreads pthread.h pthread_create -pthread; then
5769         add_cflags -pthread
5770     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5771          check_lib pthreads pthread.h pthread_create -pthreads; then
5772         add_cflags -pthreads
5773     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5774          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5775         add_cflags -ldl -pthread
5776     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5777          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5778         :
5779     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5780          check_lib pthreads pthread.h pthread_create -lpthread; then
5781         :
5782     elif check_func pthread_join && check_func pthread_create; then
5783         enable pthreads
5784     fi
5785     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5786
5787     if enabled pthreads; then
5788         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5789         check_func pthread_cancel $pthreads_extralibs
5790     fi
5791 fi
5792
5793 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5794 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5795 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5796
5797 # On some systems dynamic loading requires no extra linker flags
5798 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5799
5800 check_lib libm math.h sin -lm
5801
5802 atan2f_args=2
5803 copysign_args=2
5804 hypot_args=2
5805 ldexpf_args=2
5806 powf_args=2
5807
5808 for func in $MATH_FUNCS; do
5809     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5810 done
5811
5812 for func in $COMPLEX_FUNCS; do
5813     eval check_complexfunc $func \${${func}_args:-1}
5814 done
5815
5816 # these are off by default, so fail if requested and not available
5817 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5818 enabled cuvid             && { enabled cuda ||
5819                                die "ERROR: CUVID requires CUDA"; }
5820 enabled nvdec             && { enabled cuda ||
5821                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5822 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5823 enabled decklink          && { require_header DeckLinkAPI.h &&
5824                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5825 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5826 enabled frei0r            && require_header frei0r.h
5827 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5828 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5829 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5830 enabled ladspa            && require_header ladspa.h
5831 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5832 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5833 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5834 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5835 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5836                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5837                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5838 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5839 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5840 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5841 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5842                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5843                                  warn "using libfdk without pkg-config"; } }
5844 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"
5845 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5846 enabled fontconfig        && enable libfontconfig
5847 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5848 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5849 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5850 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5851                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5852 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5853                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5854                                done || die "ERROR: libgsm not found"; }
5855 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5856 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5857 # While it may appear that require is being used as a pkg-config
5858 # fallback for libmfx, it is actually being used to detect a different
5859 # installation route altogether.  If libmfx is installed via the Intel
5860 # Media SDK or Intel Media Server Studio, these don't come with
5861 # pkg-config support.  Instead, users should make sure that the build
5862 # can find the libraries and headers through other means.
5863 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5864                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5865 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5866 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5867 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5868 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5869                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5870                                die "ERROR: libnpp not found"; }
5871 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5872 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5873 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5874                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5875                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5876                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5877 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5878 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5879                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5880 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5881 enabled libopus           && {
5882     enabled libopus_decoder && {
5883         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5884     }
5885     enabled libopus_encoder && {
5886         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5887     }
5888 }
5889 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5890 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5891 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5892 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5893 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5894 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5895                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5896 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5897 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5898 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5899 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5900 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5901 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5902 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5903                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5904                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5905 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5906 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5907 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5908 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5909 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5910                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5911
5912 enabled libvpx            && {
5913     enabled libvpx_vp8_decoder && {
5914         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5915             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5916                 die "ERROR: libvpx decoder version must be >=1.4.0";
5917     }
5918     enabled libvpx_vp8_encoder && {
5919         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5920             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5921                 die "ERROR: libvpx encoder version must be >=1.4.0";
5922     }
5923     enabled libvpx_vp9_decoder && {
5924         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5925             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5926     }
5927     enabled libvpx_vp9_encoder && {
5928         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5929             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5930     }
5931     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5932         die "libvpx enabled but no supported decoders found"
5933     fi
5934 }
5935
5936 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5937 enabled libwebp           && {
5938     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5939     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5940 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5941                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5942                                  warn "using libx264 without pkg-config"; } } &&
5943                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5944                              { check_cpp_condition x264.h "X264_MPEG2" &&
5945                                enable libx262; }
5946 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5947                              require_cpp_condition x265.h "X265_BUILD >= 68"
5948 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5949 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5950 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5951 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5952 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5953                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5954                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5955 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5956 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5957 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5958                                { ! enabled cross_compile &&
5959                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5960                                  add_ldflags -L/opt/vc/lib/ &&
5961                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5962                                die "ERROR: mmal not found" &&
5963                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5964 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5965                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5966                                die "ERROR: openal not found"; } &&
5967                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5968                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5969 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5970                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5971                                die "ERROR: opencl not found"; } &&
5972                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5973                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5974                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5975 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5976                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5977                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5978                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5979                                die "ERROR: opengl not found."
5980                              }
5981 enabled omx               && require_header OMX_Core.h
5982 enabled omx_rpi           && { check_header OMX_Core.h ||
5983                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5984                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5985 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5986                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5987                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5988                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5989                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5990                                die "ERROR: openssl not found"; }
5991 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5992                                  die "ERROR : Rockchip MPP was not found."; } &&
5993                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5994                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5995                                { enabled libdrm ||
5996                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5997                              }
5998
5999 if enabled gcrypt; then
6000     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6001     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6002         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6003         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6004         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6005             die "ERROR: gcrypt not found"
6006         add_cflags $gcrypt_cflags
6007     else
6008         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6009     fi
6010 fi
6011
6012 if enabled sdl2; then
6013     SDL2_CONFIG="${cross_prefix}sdl2-config"
6014     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6015         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6016             disable sdl2
6017     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6018         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6019         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6020         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6021         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6022         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6023             enable sdl2
6024     fi
6025     if test $target_os = "mingw32"; then
6026         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6027     fi
6028 fi
6029
6030 if enabled decklink; then
6031     case $target_os in
6032         mingw32*|mingw64*|win32|win64)
6033             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6034             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6035             ;;
6036     esac
6037 fi
6038
6039 enabled securetransport &&
6040     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6041     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6042         disable securetransport
6043
6044 enabled securetransport &&
6045     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6046
6047 enabled schannel &&
6048     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6049     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6050     schannel_extralibs="-lsecur32" ||
6051         disable schannel
6052
6053 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6054 enabled makeinfo \
6055     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6056     && enable makeinfo_html || disable makeinfo_html
6057 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6058 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6059 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6060 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6061
6062 # check V4L2 codecs available in the API
6063 check_header linux/fb.h
6064 check_header linux/videodev2.h
6065 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6066 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6067 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6068 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6069 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6070 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6071 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6072 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6073 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6074 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6075 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6076
6077 check_header sys/videoio.h
6078 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6079
6080 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6081 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6082 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6083 # w32api 3.12 had it defined wrong
6084 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6085
6086 check_type "dshow.h" IBaseFilter
6087
6088 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6089 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6090     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6091     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6092     check_header "dev/ic/bt8xx.h"
6093
6094 if check_struct sys/soundcard.h audio_buf_info bytes; then
6095     enable_sanitized sys/soundcard.h
6096 else
6097     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6098     #include <sys/soundcard.h>
6099     audio_buf_info abc;
6100 EOF
6101 fi
6102
6103 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6104     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6105
6106 enabled libjack &&
6107     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6108
6109 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6110
6111 if enabled libcdio; then
6112     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6113     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6114     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6115     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6116     die "ERROR: No usable libcdio/cdparanoia found"
6117 fi
6118
6119 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6120     disable libxcb_shm libxcb_shape libxcb_xfixes
6121
6122 if enabled libxcb; then
6123     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6124     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6125     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6126 fi
6127
6128 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6129
6130 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6131 # the desktop api partition
6132 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6133 #ifdef WINAPI_FAMILY
6134 #include <winapifamily.h>
6135 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6136 #error desktop, not uwp
6137 #else
6138 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6139 #endif
6140 #else
6141 #error no family set
6142 #endif
6143 EOF
6144
6145 enabled vaapi &&
6146     check_lib vaapi va/va.h vaInitialize -lva
6147
6148 enabled vaapi &&
6149     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6150     disable vaapi
6151
6152 enabled vaapi &&
6153     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6154
6155 enabled vaapi &&
6156     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6157
6158 enabled vaapi &&
6159     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6160     enable vaapi_1
6161
6162 if enabled_all opencl vaapi ; then
6163     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6164         enable opencl_vaapi_beignet
6165     if enabled libmfx ; then
6166         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6167             enable opencl_vaapi_intel_media
6168     fi
6169 fi
6170
6171 if enabled_all opencl dxva2 ; then
6172     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6173         enable opencl_dxva2
6174 fi
6175
6176 if enabled_all opencl d3d11va ; then
6177     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6178         enable opencl_d3d11
6179 fi
6180
6181 enabled vdpau &&
6182     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6183     disable vdpau
6184
6185 enabled vdpau &&
6186     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6187
6188 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6189
6190 if enabled x86; then
6191     case $target_os in
6192         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6193             ;;
6194         *)
6195             disable cuda cuvid nvdec nvenc
6196             ;;
6197     esac
6198 else
6199     disable cuda cuvid nvdec nvenc
6200 fi
6201
6202 enabled nvenc &&
6203     check_cc -I$source_path <<EOF || disable nvenc
6204 #include "compat/nvenc/nvEncodeAPI.h"
6205 NV_ENCODE_API_FUNCTION_LIST flist;
6206 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6207 int main(void) { return 0; }
6208 EOF
6209
6210 # Funny iconv installations are not unusual, so check it after all flags have been set
6211 if enabled libc_iconv; then
6212     check_func_headers iconv.h iconv
6213 elif enabled iconv; then
6214     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6215 fi
6216
6217 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6218
6219 # add some useful compiler flags if supported
6220 check_cflags -Wdeclaration-after-statement
6221 check_cflags -Wall
6222 check_cflags -Wdisabled-optimization
6223 check_cflags -Wpointer-arith
6224 check_cflags -Wredundant-decls
6225 check_cflags -Wwrite-strings
6226 check_cflags -Wtype-limits
6227 check_cflags -Wundef
6228 check_cflags -Wmissing-prototypes
6229 check_cflags -Wno-pointer-to-int-cast
6230 check_cflags -Wstrict-prototypes
6231 check_cflags -Wempty-body
6232
6233 if enabled extra_warnings; then
6234     check_cflags -Wcast-qual
6235     check_cflags -Wextra
6236     check_cflags -Wpedantic
6237 fi
6238
6239 check_disable_warning(){
6240     warning_flag=-W${1#-Wno-}
6241     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6242 }
6243
6244 test_cflags -Werror=unused-command-line-argument &&
6245     append unknown_warning_flags "-Werror=unused-command-line-argument"
6246 test_cflags -Werror=unknown-warning-option &&
6247     append unknown_warning_flags "-Werror=unknown-warning-option"
6248
6249 check_disable_warning -Wno-parentheses
6250 check_disable_warning -Wno-switch
6251 check_disable_warning -Wno-format-zero-length
6252 check_disable_warning -Wno-pointer-sign
6253 check_disable_warning -Wno-unused-const-variable
6254 check_disable_warning -Wno-bool-operation
6255
6256 check_disable_warning_headers(){
6257     warning_flag=-W${1#-Wno-}
6258     test_cflags $warning_flag && add_cflags_headers $1
6259 }
6260
6261 check_disable_warning_headers -Wno-deprecated-declarations
6262 check_disable_warning_headers -Wno-unused-variable
6263
6264 check_cc <<EOF && enable blocks_extension
6265 void (^block)(void);
6266 EOF
6267
6268 # add some linker flags
6269 check_ldflags -Wl,--warn-common
6270 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6271 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6272 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6273
6274 # add some strip flags
6275 check_stripflags -x
6276
6277 enabled neon_clobber_test &&
6278     check_ldflags -Wl,--wrap,avcodec_open2              \
6279                   -Wl,--wrap,avcodec_decode_audio4      \
6280                   -Wl,--wrap,avcodec_decode_video2      \
6281                   -Wl,--wrap,avcodec_decode_subtitle2   \
6282                   -Wl,--wrap,avcodec_encode_audio2      \
6283                   -Wl,--wrap,avcodec_encode_video2      \
6284                   -Wl,--wrap,avcodec_encode_subtitle    \
6285                   -Wl,--wrap,avcodec_send_packet        \
6286                   -Wl,--wrap,avcodec_receive_packet     \
6287                   -Wl,--wrap,avcodec_send_frame         \
6288                   -Wl,--wrap,avcodec_receive_frame      \
6289                   -Wl,--wrap,swr_convert                \
6290                   -Wl,--wrap,avresample_convert ||
6291     disable neon_clobber_test
6292
6293 enabled xmm_clobber_test &&
6294     check_ldflags -Wl,--wrap,avcodec_open2              \
6295                   -Wl,--wrap,avcodec_decode_audio4      \
6296                   -Wl,--wrap,avcodec_decode_video2      \
6297                   -Wl,--wrap,avcodec_decode_subtitle2   \
6298                   -Wl,--wrap,avcodec_encode_audio2      \
6299                   -Wl,--wrap,avcodec_encode_video2      \
6300                   -Wl,--wrap,avcodec_encode_subtitle    \
6301                   -Wl,--wrap,avcodec_send_packet        \
6302                   -Wl,--wrap,avcodec_receive_packet     \
6303                   -Wl,--wrap,avcodec_send_frame         \
6304                   -Wl,--wrap,avcodec_receive_frame      \
6305                   -Wl,--wrap,swr_convert                \
6306                   -Wl,--wrap,avresample_convert         \
6307                   -Wl,--wrap,sws_scale ||
6308     disable xmm_clobber_test
6309
6310 check_ld "cc" <<EOF && enable proper_dce
6311 extern const int array[512];
6312 static inline int func(void) { return array[0]; }
6313 int main(void) { return 0; }
6314 EOF
6315
6316 if enabled proper_dce; then
6317     echo "X { local: *; };" > $TMPV
6318     if test_ldflags -Wl,${version_script},$TMPV; then
6319         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6320         quotes='""'
6321         check_cc <<EOF && enable symver_asm_label
6322 void ff_foo(void) __asm__ ("av_foo@VERSION");
6323 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6324 EOF
6325         check_cc <<EOF && enable symver_gnu_asm
6326 __asm__(".symver ff_foo,av_foo@VERSION");
6327 void ff_foo(void) {}
6328 EOF
6329     fi
6330 fi
6331
6332 if [ -z "$optflags" ]; then
6333     if enabled small; then
6334         optflags=$cflags_size
6335     elif enabled optimizations; then
6336         optflags=$cflags_speed
6337     else
6338         optflags=$cflags_noopt
6339     fi
6340 fi
6341
6342 if [ -z "$nvccflags" ]; then
6343     nvccflags=$nvccflags_default
6344 fi
6345
6346 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6347     nvccflags="$nvccflags -m64"
6348 else
6349     nvccflags="$nvccflags -m32"
6350 fi
6351
6352 check_optflags(){
6353     check_cflags "$@"
6354     enabled lto && check_ldflags "$@"
6355 }
6356
6357 check_optflags $optflags
6358 check_optflags -fno-math-errno
6359 check_optflags -fno-signed-zeros
6360
6361 if enabled lto; then
6362     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6363     check_cflags  -flto
6364     check_ldflags -flto $cpuflags
6365     disable inline_asm_direct_symbol_refs
6366 fi
6367
6368 enabled ftrapv && check_cflags -ftrapv
6369
6370 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6371 int x;
6372 EOF
6373
6374
6375 if enabled icc; then
6376     # Just warnings, no remarks
6377     check_cflags -w1
6378     # -wd: Disable following warnings
6379     # 144, 167, 556: -Wno-pointer-sign
6380     # 188: enumerated type mixed with another type
6381     # 1292: attribute "foo" ignored
6382     # 1419: external declaration in primary source file
6383     # 10006: ignoring unknown option -fno-signed-zeros
6384     # 10148: ignoring unknown option -Wno-parentheses
6385     # 10156: ignoring option '-W'; no argument required
6386     # 13200: No EMMS instruction before call to function
6387     # 13203: No EMMS instruction before return from function
6388     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6389     # 11030: Warning unknown option --as-needed
6390     # 10156: ignoring option '-export'; no argument required
6391     check_ldflags -wd10156,11030
6392     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6393     enable ebp_available
6394     # The test above does not test linking
6395     enabled lto && disable symver_asm_label
6396     if enabled x86_32; then
6397         icc_version=$($cc -dumpversion)
6398         test ${icc_version%%.*} -ge 11 &&
6399             check_cflags -falign-stack=maintain-16-byte ||
6400             disable aligned_stack
6401     fi
6402 elif enabled gcc; then
6403     check_optflags -fno-tree-vectorize
6404     check_cflags -Werror=format-security
6405     check_cflags -Werror=implicit-function-declaration
6406     check_cflags -Werror=missing-prototypes
6407     check_cflags -Werror=return-type
6408     check_cflags -Werror=vla
6409     check_cflags -Wformat
6410     check_cflags -fdiagnostics-color=auto
6411     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6412 elif enabled llvm_gcc; then
6413     check_cflags -mllvm -stack-alignment=16
6414 elif enabled clang; then
6415     check_cflags -mllvm -stack-alignment=16
6416     check_cflags -mstack-alignment=16
6417     check_cflags -Qunused-arguments
6418     check_cflags -Werror=implicit-function-declaration
6419     check_cflags -Werror=missing-prototypes
6420     check_cflags -Werror=return-type
6421 elif enabled cparser; then
6422     add_cflags -Wno-missing-variable-declarations
6423     add_cflags -Wno-empty-statement
6424 elif enabled armcc; then
6425     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6426     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6427     # 2523: use of inline assembly is deprecated
6428     add_cflags -W${armcc_opt},--diag_suppress=2523
6429     add_cflags -W${armcc_opt},--diag_suppress=1207
6430     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6431     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6432     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6433     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6434 elif enabled pathscale; then
6435     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6436     disable inline_asm
6437 elif enabled_any msvc icl; then
6438     enabled x86_32 && disable aligned_stack
6439     enabled_all x86_32 debug && add_cflags -Oy-
6440     enabled debug && add_ldflags -debug
6441     enable pragma_deprecated
6442     if enabled icl; then
6443         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6444         # (correctly) on icl 13.x.
6445         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6446             add_cflags -Qansi-alias
6447         # Some inline asm is not compilable in debug
6448         if enabled debug; then
6449             disable ebp_available
6450             disable ebx_available
6451         fi
6452     fi
6453     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6454     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6455     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6456     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6457     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6458     # MSVC 2013 and newer can handle it fine.
6459     # If this declspec fails, force including stdlib.h before the restrict redefinition
6460     # happens in config.h.
6461     if [ $_restrict != restrict ]; then
6462         check_cc <<EOF || add_cflags -FIstdlib.h
6463 __declspec($_restrict) void* foo(int);
6464 EOF
6465     fi
6466     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6467     # Issue has been fixed in MSVC v19.00.24218.
6468     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6469         check_cflags -d2SSAOptimizer-
6470     # enable utf-8 source processing on VS2015 U2 and newer
6471     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6472         add_cflags -utf-8
6473 fi
6474
6475 for pfx in "" host_; do
6476     varname=${pfx%_}cc_type
6477     eval "type=\$$varname"
6478     if [ "$type" = "msvc" ]; then
6479         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6480 static inline int foo(int a) { return a; }
6481 EOF
6482     fi
6483 done
6484
6485 case $as_type in
6486     clang)
6487         add_asflags -Qunused-arguments
6488     ;;
6489 esac
6490
6491 case $ld_type in
6492     clang)
6493         check_ldflags -Qunused-arguments
6494     ;;
6495 esac
6496
6497 enable frame_thread_encoder
6498
6499 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6500
6501 check_deps $CONFIG_LIST       \
6502            $CONFIG_EXTRA      \
6503            $HAVE_LIST         \
6504            $ALL_COMPONENTS    \
6505
6506 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"
6507
6508
6509 if test $target_os = "haiku"; then
6510     disable memalign
6511     disable posix_memalign
6512 fi
6513
6514 flatten_extralibs(){
6515     unset nested_entries
6516     list_name=$1
6517     eval list=\$${1}
6518     for entry in $list; do
6519         entry_copy=$entry
6520         resolve entry_copy
6521         append nested_entries $(filter '*_extralibs' $entry_copy)
6522         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6523         eval $entry="\$flat_entries"
6524     done
6525     append $list_name "$nested_entries"
6526
6527     resolve nested_entries
6528     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6529         flatten_extralibs $list_name
6530     fi
6531 }
6532
6533 flatten_extralibs_wrapper(){
6534     list_name=$1
6535     flatten_extralibs $list_name
6536     unique $list_name
6537     resolve $list_name
6538     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6539     eval printf \''%s'\' \""\$$list_name"\"
6540 }
6541
6542 for linkunit in $LIBRARY_LIST; do
6543     unset current_extralibs
6544     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6545     for comp in ${components}; do
6546         enabled $comp || continue
6547         comp_extralibs="${comp}_extralibs"
6548         append current_extralibs $comp_extralibs
6549     done
6550     eval prepend ${linkunit}_extralibs $current_extralibs
6551 done
6552
6553 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6554     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6555 done
6556
6557 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6558
6559 for thread in $THREADS_LIST; do
6560     if enabled $thread; then
6561         test -n "$thread_type" &&
6562             die "ERROR: Only one thread type must be selected." ||
6563             thread_type="$thread"
6564     fi
6565 done
6566
6567 if disabled stdatomic; then
6568     if enabled atomics_gcc; then
6569         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6570     elif enabled atomics_win32; then
6571         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6572     elif enabled atomics_suncc; then
6573         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6574     elif enabled pthreads; then
6575         add_compat atomics/pthread/stdatomic.o
6576         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6577     else
6578         enabled threads && die "Threading is enabled, but no atomics are available"
6579         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6580     fi
6581 fi
6582
6583 # Check if requested libraries were found.
6584 for lib in $AUTODETECT_LIBS; do
6585     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6586 done
6587
6588 enabled zlib && add_cppflags -DZLIB_CONST
6589
6590 # conditional library dependencies, in linking order
6591 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6592 enabled afir_filter         && prepend avfilter_deps "avcodec"
6593 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6594 enabled aresample_filter    && prepend avfilter_deps "swresample"
6595 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6596 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6597 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6598 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6599 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6600 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6601 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6602 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6603 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6604 enabled pan_filter          && prepend avfilter_deps "swresample"
6605 enabled pp_filter           && prepend avfilter_deps "postproc"
6606 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6607 enabled resample_filter && prepend avfilter_deps "avresample"
6608 enabled sab_filter          && prepend avfilter_deps "swscale"
6609 enabled scale_filter    && prepend avfilter_deps "swscale"
6610 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6611 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6612 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6613 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6614 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6615 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6616 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6617 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6618 enabled spp_filter          && prepend avfilter_deps "avcodec"
6619 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6620 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6621 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6622
6623 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6624
6625 #FIXME
6626 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6627
6628 enabled opus_decoder    && prepend avcodec_deps "swresample"
6629
6630 expand_deps(){
6631     lib_deps=${1}_deps
6632     eval "deps=\$$lib_deps"
6633     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6634     unique $lib_deps
6635 }
6636
6637 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6638 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6639
6640 map 'expand_deps $v' $LIBRARY_LIST
6641
6642 license="LGPL version 2.1 or later"
6643 if enabled nonfree; then
6644     license="nonfree and unredistributable"
6645 elif enabled gplv3; then
6646     license="GPL version 3 or later"
6647 elif enabled lgplv3; then
6648     license="LGPL version 3 or later"
6649 elif enabled gpl; then
6650     license="GPL version 2 or later"
6651 fi
6652
6653 if test "$quiet" != "yes"; then
6654
6655 echo "install prefix            $prefix"
6656 echo "source path               $source_path"
6657 echo "C compiler                $cc"
6658 echo "C library                 $libc_type"
6659 if test "$host_cc" != "$cc"; then
6660     echo "host C compiler           $host_cc"
6661     echo "host C library            $host_libc_type"
6662 fi
6663 echo "ARCH                      $arch ($cpu)"
6664 if test "$build_suffix" != ""; then
6665     echo "build suffix              $build_suffix"
6666 fi
6667 if test "$progs_suffix" != ""; then
6668     echo "progs suffix              $progs_suffix"
6669 fi
6670 if test "$extra_version" != ""; then
6671     echo "version string suffix     $extra_version"
6672 fi
6673 echo "big-endian                ${bigendian-no}"
6674 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6675 if enabled x86; then
6676     echo "standalone assembly       ${x86asm-no}"
6677     echo "x86 assembler             ${x86asmexe}"
6678     echo "MMX enabled               ${mmx-no}"
6679     echo "MMXEXT enabled            ${mmxext-no}"
6680     echo "3DNow! enabled            ${amd3dnow-no}"
6681     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6682     echo "SSE enabled               ${sse-no}"
6683     echo "SSSE3 enabled             ${ssse3-no}"
6684     echo "AESNI enabled             ${aesni-no}"
6685     echo "AVX enabled               ${avx-no}"
6686     echo "AVX2 enabled              ${avx2-no}"
6687     echo "XOP enabled               ${xop-no}"
6688     echo "FMA3 enabled              ${fma3-no}"
6689     echo "FMA4 enabled              ${fma4-no}"
6690     echo "i686 features enabled     ${i686-no}"
6691     echo "CMOV is fast              ${fast_cmov-no}"
6692     echo "EBX available             ${ebx_available-no}"
6693     echo "EBP available             ${ebp_available-no}"
6694 fi
6695 if enabled aarch64; then
6696     echo "NEON enabled              ${neon-no}"
6697     echo "VFP enabled               ${vfp-no}"
6698 fi
6699 if enabled arm; then
6700     echo "ARMv5TE enabled           ${armv5te-no}"
6701     echo "ARMv6 enabled             ${armv6-no}"
6702     echo "ARMv6T2 enabled           ${armv6t2-no}"
6703     echo "VFP enabled               ${vfp-no}"
6704     echo "NEON enabled              ${neon-no}"
6705     echo "THUMB enabled             ${thumb-no}"
6706 fi
6707 if enabled mips; then
6708     echo "MIPS FPU enabled          ${mipsfpu-no}"
6709     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6710     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6711     echo "MIPS MSA enabled          ${msa-no}"
6712     echo "LOONGSON MMI enabled      ${mmi-no}"
6713 fi
6714 if enabled ppc; then
6715     echo "AltiVec enabled           ${altivec-no}"
6716     echo "VSX enabled               ${vsx-no}"
6717     echo "POWER8 enabled            ${power8-no}"
6718     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6719     echo "dcbzl available           ${dcbzl-no}"
6720 fi
6721 echo "debug symbols             ${debug-no}"
6722 echo "strip symbols             ${stripping-no}"
6723 echo "optimize for size         ${small-no}"
6724 echo "optimizations             ${optimizations-no}"
6725 echo "static                    ${static-no}"
6726 echo "shared                    ${shared-no}"
6727 echo "postprocessing support    ${postproc-no}"
6728 echo "network support           ${network-no}"
6729 echo "threading support         ${thread_type-no}"
6730 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6731 echo "texi2html enabled         ${texi2html-no}"
6732 echo "perl enabled              ${perl-no}"
6733 echo "pod2man enabled           ${pod2man-no}"
6734 echo "makeinfo enabled          ${makeinfo-no}"
6735 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6736 test -n "$random_seed" &&
6737     echo "random seed               ${random_seed}"
6738 echo
6739
6740 echo "External libraries:"
6741 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6742 echo
6743
6744 echo "External libraries providing hardware acceleration:"
6745 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6746 echo
6747
6748 echo "Libraries:"
6749 print_enabled '' $LIBRARY_LIST | print_in_columns
6750 echo
6751
6752 echo "Programs:"
6753 print_enabled '' $PROGRAM_LIST | print_in_columns
6754 echo
6755
6756 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6757     echo "Enabled ${type}s:"
6758     eval list=\$$(toupper $type)_LIST
6759     print_enabled '_*' $list | print_in_columns
6760     echo
6761 done
6762
6763 if test -n "$ignore_tests"; then
6764     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6765     echo "Ignored FATE tests:"
6766     echo $ignore_tests | print_in_columns
6767     echo
6768 fi
6769
6770 echo "License: $license"
6771
6772 fi # test "$quiet" != "yes"
6773
6774 if test -n "$WARNINGS"; then
6775     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6776     enabled fatal_warnings && exit 1
6777 fi
6778
6779 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6780
6781 esc(){
6782     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6783 }
6784
6785 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6786
6787 enabled stripping || strip="echo skipping strip"
6788 enabled stripping || striptype=""
6789
6790 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6791
6792 cat > ffbuild/config.mak <<EOF
6793 # Automatically generated by configure - do not modify!
6794 ifndef FFMPEG_CONFIG_MAK
6795 FFMPEG_CONFIG_MAK=1
6796 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6797 prefix=$prefix
6798 LIBDIR=\$(DESTDIR)$libdir
6799 SHLIBDIR=\$(DESTDIR)$shlibdir
6800 INCDIR=\$(DESTDIR)$incdir
6801 BINDIR=\$(DESTDIR)$bindir
6802 DATADIR=\$(DESTDIR)$datadir
6803 DOCDIR=\$(DESTDIR)$docdir
6804 MANDIR=\$(DESTDIR)$mandir
6805 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6806 INSTALL_NAME_DIR=$install_name_dir
6807 SRC_PATH=$source_path
6808 SRC_LINK=$source_link
6809 ifndef MAIN_MAKEFILE
6810 SRC_PATH:=\$(SRC_PATH:.%=..%)
6811 endif
6812 CC_IDENT=$cc_ident
6813 ARCH=$arch
6814 INTRINSICS=$intrinsics
6815 EXTERN_PREFIX=$extern_prefix
6816 CC=$cc
6817 CXX=$cxx
6818 AS=$as
6819 OBJCC=$objcc
6820 LD=$ld
6821 DEPCC=$dep_cc
6822 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6823 DEPAS=$as
6824 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6825 X86ASM=$x86asmexe
6826 DEPX86ASM=$x86asmexe
6827 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6828 AR=$ar
6829 ARFLAGS=$arflags
6830 AR_O=$ar_o
6831 AR_CMD=$ar
6832 NM_CMD=$nm
6833 RANLIB=$ranlib
6834 STRIP=$strip
6835 STRIPTYPE=$striptype
6836 NVCC=$nvcc
6837 CP=cp -p
6838 LN_S=$ln_s
6839 CPPFLAGS=$CPPFLAGS
6840 CFLAGS=$CFLAGS
6841 CXXFLAGS=$CXXFLAGS
6842 OBJCFLAGS=$OBJCFLAGS
6843 ASFLAGS=$ASFLAGS
6844 NVCCFLAGS=$nvccflags
6845 AS_C=$AS_C
6846 AS_O=$AS_O
6847 OBJCC_C=$OBJCC_C
6848 OBJCC_E=$OBJCC_E
6849 OBJCC_O=$OBJCC_O
6850 CC_C=$CC_C
6851 CC_E=$CC_E
6852 CC_O=$CC_O
6853 CXX_C=$CXX_C
6854 CXX_O=$CXX_O
6855 NVCC_C=$NVCC_C
6856 NVCC_O=$NVCC_O
6857 LD_O=$LD_O
6858 X86ASM_O=$X86ASM_O
6859 LD_LIB=$LD_LIB
6860 LD_PATH=$LD_PATH
6861 WINDRES=$windres
6862 DEPWINDRES=$dep_cc
6863 DOXYGEN=$doxygen
6864 LDFLAGS=$LDFLAGS
6865 LDEXEFLAGS=$LDEXEFLAGS
6866 LDSOFLAGS=$LDSOFLAGS
6867 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6868 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6869 X86ASMFLAGS=$X86ASMFLAGS
6870 BUILDSUF=$build_suffix
6871 PROGSSUF=$progs_suffix
6872 FULLNAME=$FULLNAME
6873 LIBPREF=$LIBPREF
6874 LIBSUF=$LIBSUF
6875 LIBNAME=$LIBNAME
6876 SLIBPREF=$SLIBPREF
6877 SLIBSUF=$SLIBSUF
6878 EXESUF=$EXESUF
6879 EXTRA_VERSION=$extra_version
6880 CCDEP=$CCDEP
6881 CXXDEP=$CXXDEP
6882 CCDEP_FLAGS=$CCDEP_FLAGS
6883 ASDEP=$ASDEP
6884 ASDEP_FLAGS=$ASDEP_FLAGS
6885 X86ASMDEP=$X86ASMDEP
6886 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6887 CC_DEPFLAGS=$CC_DEPFLAGS
6888 AS_DEPFLAGS=$AS_DEPFLAGS
6889 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6890 HOSTCC=$host_cc
6891 HOSTLD=$host_ld
6892 HOSTCFLAGS=$host_cflags
6893 HOSTCPPFLAGS=$host_cppflags
6894 HOSTEXESUF=$HOSTEXESUF
6895 HOSTLDFLAGS=$host_ldflags
6896 HOSTEXTRALIBS=$host_extralibs
6897 DEPHOSTCC=$host_cc
6898 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6899 HOSTCCDEP=$HOSTCCDEP
6900 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6901 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6902 HOSTCC_C=$HOSTCC_C
6903 HOSTCC_O=$HOSTCC_O
6904 HOSTLD_O=$HOSTLD_O
6905 TARGET_EXEC=$target_exec $target_exec_args
6906 TARGET_PATH=$target_path
6907 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6908 CFLAGS-ffplay=${sdl2_cflags}
6909 CFLAGS_HEADERS=$CFLAGS_HEADERS
6910 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6911 EXTRALIBS=$extralibs
6912 COMPAT_OBJS=$compat_objs
6913 INSTALL=$install
6914 SLIBNAME=${SLIBNAME}
6915 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6916 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6917 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6918 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6919 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6920 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6921 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6922 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6923 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6924 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6925 NOREDZONE_FLAGS=$noredzone_flags
6926 LIBFUZZER_PATH=$libfuzzer_path
6927 IGNORE_TESTS=$ignore_tests
6928 EOF
6929
6930 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6931
6932 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6933     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6934 done
6935
6936 cat > $TMPH <<EOF
6937 /* Automatically generated by configure - do not modify! */
6938 #ifndef FFMPEG_CONFIG_H
6939 #define FFMPEG_CONFIG_H
6940 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6941 #define FFMPEG_LICENSE "$(c_escape $license)"
6942 #define CONFIG_THIS_YEAR 2017
6943 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6944 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6945 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6946 #define av_restrict $_restrict
6947 #define EXTERN_PREFIX "${extern_prefix}"
6948 #define EXTERN_ASM ${extern_prefix}
6949 #define BUILDSUF "$build_suffix"
6950 #define SLIBSUF "$SLIBSUF"
6951 #define HAVE_MMX2 HAVE_MMXEXT
6952 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6953 EOF
6954
6955 test -n "$assert_level" &&
6956     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6957
6958 test -n "$malloc_prefix" &&
6959     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6960
6961 if enabled x86asm; then
6962     append config_files $TMPASM
6963     cat > $TMPASM <<EOF
6964 ; Automatically generated by configure - do not modify!
6965 EOF
6966 fi
6967
6968 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6969
6970
6971 mkdir -p doc
6972 mkdir -p tests
6973 mkdir -p tests/api
6974 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6975
6976 print_config ARCH_   "$config_files" $ARCH_LIST
6977 print_config HAVE_   "$config_files" $HAVE_LIST
6978 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6979                                      $CONFIG_EXTRA      \
6980                                      $ALL_COMPONENTS    \
6981
6982 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6983 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6984
6985 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6986 cp_if_changed $TMPH config.h
6987 touch ffbuild/.config
6988
6989 enabled x86asm && cp_if_changed $TMPASM config.asm
6990
6991 cat > $TMPH <<EOF
6992 /* Generated by ffmpeg configure */
6993 #ifndef AVUTIL_AVCONFIG_H
6994 #define AVUTIL_AVCONFIG_H
6995 EOF
6996
6997 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6998
6999 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7000
7001 cp_if_changed $TMPH libavutil/avconfig.h
7002
7003 # generate the lists of enabled components
7004 print_enabled_components(){
7005     file=$1
7006     struct_name=$2
7007     name=$3
7008     shift 3
7009     echo "static const $struct_name * const $name[] = {" > $TMPH
7010     for c in $*; do
7011         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7012     done
7013     echo "    NULL };" >> $TMPH
7014     cp_if_changed $TMPH $file
7015 }
7016
7017 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7018 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7019
7020 # Settings for pkg-config files
7021
7022 cat > $TMPH <<EOF
7023 # Automatically generated by configure - do not modify!
7024 shared=$shared
7025 build_suffix=$build_suffix
7026 prefix=$prefix
7027 libdir=$libdir
7028 incdir=$incdir
7029 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7030 source_path=${source_path}
7031 LIBPREF=${LIBPREF}
7032 LIBSUF=${LIBSUF}
7033 extralibs_avutil="$avutil_extralibs"
7034 extralibs_avcodec="$avcodec_extralibs"
7035 extralibs_avformat="$avformat_extralibs"
7036 extralibs_avdevice="$avdevice_extralibs"
7037 extralibs_avfilter="$avfilter_extralibs"
7038 extralibs_avresample="$avresample_extralibs"
7039 extralibs_postproc="$postproc_extralibs"
7040 extralibs_swscale="$swscale_extralibs"
7041 extralibs_swresample="$swresample_extralibs"
7042 EOF
7043
7044 for lib in $LIBRARY_LIST; do
7045     lib_deps="$(eval echo \$${lib}_deps)"
7046     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7047 done
7048
7049 cp_if_changed $TMPH ffbuild/config.sh