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