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   --disable-jack           disable libjack support [autodetect]
 221   --enable-jni             enable JNI support [no]
 222   --enable-ladspa          enable LADSPA audio filtering [no]
 223   --enable-libass          enable libass subtitles rendering,
 224                            needed for subtitles and ass filter [no]
 225   --enable-libbluray       enable BluRay reading using libbluray [no]
 226   --enable-libbs2b         enable bs2b DSP library [no]
 227   --enable-libcaca         enable textual display using libcaca [no]
 228   --enable-libcelt         enable CELT decoding via libcelt [no]
 229   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 231                            and libraw1394 [no]
 232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 237   --enable-libgme          enable Game Music Emu via libgme [no]
 238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 240   --enable-libilbc         enable iLBC de/encoding via libilbc [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 code
 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-nvenc          disable Nvidia video encoding code [autodetect]
 317   --enable-omx             enable OpenMAX IL code [no]
 318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 321   --disable-vda            disable Apple Video Decode Acceleration 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 [$LDEXEFLAGS]
 369   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 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 quotes='""'
 466 if test -t 1 && which tput >/dev/null 2>&1; then
 467     ncolors=$(tput colors)
 468     if test -n "$ncolors" && test $ncolors -ge 8; then
 469         bold_color=$(tput bold)
 470         warn_color=$(tput setaf 3)
 471         error_color=$(tput setaf 1)
 472         reset_color=$(tput sgr0)
 473     fi
 474     # 72 used instead of 80 since that's the default of pr
 475     ncols=$(tput cols)
 476 fi
 477 : ${ncols:=72}
 478
 479 log(){
 480     echo "$@" >> $logfile
 481 }
 482
 483 log_file(){
 484     log BEGIN $1
 485     pr -n -t $1 >> $logfile
 486     log END $1
 487 }
 488
 489 warn(){
 490     log "WARNING: $*"
 491     WARNINGS="${WARNINGS}WARNING: $*\n"
 492 }
 493
 494 die(){
 495     log "$@"
 496     echo "$error_color$bold_color$@$reset_color"
 497     cat <<EOF
 498
 499 If you think configure made a mistake, make sure you are using the latest
 500 version from Git.  If the latest version fails, report the problem to the
 501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 502 EOF
 503     if disabled logging; then
 504         cat <<EOF
 505 Rerun configure with logging enabled (do not use --disable-logging), and
 506 include the log this produces with your report.
 507 EOF
 508     else
 509         cat <<EOF
 510 Include the log file "$logfile" produced by configure as this will help
 511 solve the problem.
 512 EOF
 513     fi
 514     exit 1
 515 }
 516
 517 # Avoid locale weirdness, besides we really just want to translate ASCII.
 518 toupper(){
 519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 520 }
 521
 522 tolower(){
 523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 524 }
 525
 526 c_escape(){
 527     echo "$*" | sed 's/["\\]/\\\0/g'
 528 }
 529
 530 sh_quote(){
 531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 533     echo "$v"
 534 }
 535
 536 cleanws(){
 537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 538 }
 539
 540 filter(){
 541     pat=$1
 542     shift
 543     for v; do
 544         eval "case $v in $pat) printf '%s ' $v ;; esac"
 545     done
 546 }
 547
 548 filter_out(){
 549     pat=$1
 550     shift
 551     for v; do
 552         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 553     done
 554 }
 555
 556 map(){
 557     m=$1
 558     shift
 559     for v; do eval $m; done
 560 }
 561
 562 add_suffix(){
 563     suffix=$1
 564     shift
 565     for v; do echo ${v}${suffix}; done
 566 }
 567
 568 set_all(){
 569     value=$1
 570     shift
 571     for var in $*; do
 572         eval $var=$value
 573     done
 574 }
 575
 576 set_weak(){
 577     value=$1
 578     shift
 579     for var; do
 580         eval : \${$var:=$value}
 581     done
 582 }
 583
 584 sanitize_var_name(){
 585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 586 }
 587
 588 set_safe(){
 589     var=$1
 590     shift
 591     eval $(sanitize_var_name "$var")='$*'
 592 }
 593
 594 get_safe(){
 595     eval echo \$$(sanitize_var_name "$1")
 596 }
 597
 598 pushvar(){
 599     for pvar in $*; do
 600         eval level=\${${pvar}_level:=0}
 601         eval ${pvar}_${level}="\$$pvar"
 602         eval ${pvar}_level=$(($level+1))
 603     done
 604 }
 605
 606 popvar(){
 607     for pvar in $*; do
 608         eval level=\${${pvar}_level:-0}
 609         test $level = 0 && continue
 610         eval level=$(($level-1))
 611         eval $pvar="\${${pvar}_${level}}"
 612         eval ${pvar}_level=$level
 613         eval unset ${pvar}_${level}
 614     done
 615 }
 616
 617 request(){
 618     for var in $*; do
 619         eval ${var}_requested=yes
 620         eval $var=
 621     done
 622 }
 623
 624 enable(){
 625     set_all yes $*
 626 }
 627
 628 disable(){
 629     set_all no $*
 630 }
 631
 632 enable_weak(){
 633     set_weak yes $*
 634 }
 635
 636 disable_weak(){
 637     set_weak no $*
 638 }
 639
 640 enable_safe(){
 641     for var; do
 642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 643     done
 644 }
 645
 646 disable_safe(){
 647     for var; do
 648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 649     done
 650 }
 651
 652 do_enable_deep(){
 653     for var; do
 654         enabled $var && continue
 655         eval sel="\$${var}_select"
 656         eval sgs="\$${var}_suggest"
 657         pushvar var sgs
 658         enable_deep $sel
 659         popvar sgs
 660         enable_deep_weak $sgs
 661         popvar var
 662     done
 663 }
 664
 665 enable_deep(){
 666     do_enable_deep $*
 667     enable $*
 668 }
 669
 670 enable_deep_weak(){
 671     for var; do
 672         disabled $var && continue
 673         pushvar var
 674         do_enable_deep $var
 675         popvar var
 676         enable_weak $var
 677     done
 678 }
 679
 680 requested(){
 681     test "${1#!}" = "$1" && op='=' || op=!=
 682     eval test "x\$${1#!}_requested" $op "xyes"
 683 }
 684
 685 enabled(){
 686     test "${1#!}" = "$1" && op='=' || op=!=
 687     eval test "x\$${1#!}" $op "xyes"
 688 }
 689
 690 disabled(){
 691     test "${1#!}" = "$1" && op='=' || op=!=
 692     eval test "x\$${1#!}" $op "xno"
 693 }
 694
 695 enabled_all(){
 696     for opt; do
 697         enabled $opt || return 1
 698     done
 699 }
 700
 701 disabled_all(){
 702     for opt; do
 703         disabled $opt || return 1
 704     done
 705 }
 706
 707 enabled_any(){
 708     for opt; do
 709         enabled $opt && return 0
 710     done
 711 }
 712
 713 disabled_any(){
 714     for opt; do
 715         disabled $opt && return 0
 716     done
 717     return 1
 718 }
 719
 720 set_default(){
 721     for opt; do
 722         eval : \${$opt:=\$${opt}_default}
 723     done
 724 }
 725
 726 is_in(){
 727     value=$1
 728     shift
 729     for var in $*; do
 730         [ $var = $value ] && return 0
 731     done
 732     return 1
 733 }
 734
 735 do_check_deps(){
 736     for cfg; do
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740         append allopts $cfg
 741
 742         eval dep_all="\$${cfg}_deps"
 743         eval dep_any="\$${cfg}_deps_any"
 744         eval dep_con="\$${cfg}_conflict"
 745         eval dep_sel="\$${cfg}_select"
 746         eval dep_sgs="\$${cfg}_suggest"
 747         eval dep_ifa="\$${cfg}_if"
 748         eval dep_ifn="\$${cfg}_if_any"
 749
 750         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 751         do_check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 752         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 753
 754         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 755         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 756         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 757         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 758         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 759         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 760
 761         if enabled $cfg; then
 762             enable_deep $dep_sel
 763             enable_deep_weak $dep_sgs
 764         fi
 765
 766         disable ${cfg}_checking
 767     done
 768 }
 769
 770 check_deps(){
 771     unset allopts
 772
 773     do_check_deps "$@"
 774
 775     for cfg in $allopts; do
 776         enabled $cfg || continue
 777         eval dep_extralibs="\$${cfg}_extralibs"
 778         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 779     done
 780 }
 781
 782 print_config(){
 783     pfx=$1
 784     files=$2
 785     shift 2
 786     map 'eval echo "$v \${$v:-no}"' "$@" |
 787     awk "BEGIN { split(\"$files\", files) }
 788         {
 789             c = \"$pfx\" toupper(\$1);
 790             v = \$2;
 791             sub(/yes/, 1, v);
 792             sub(/no/,  0, v);
 793             for (f in files) {
 794                 file = files[f];
 795                 if (file ~ /\\.h\$/) {
 796                     printf(\"#define %s %d\\n\", c, v) >>file;
 797                 } else if (file ~ /\\.asm\$/) {
 798                     printf(\"%%define %s %d\\n\", c, v) >>file;
 799                 } else if (file ~ /\\.mak\$/) {
 800                     n = -v ? \"\" : \"!\";
 801                     printf(\"%s%s=yes\\n\", n, c) >>file;
 802                 } else if (file ~ /\\.texi\$/) {
 803                     pre = -v ? \"\" : \"@c \";
 804                     yesno = \$2;
 805                     c2 = tolower(c);
 806                     gsub(/_/, \"-\", c2);
 807                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 808                 }
 809             }
 810         }"
 811 }
 812
 813 print_enabled(){
 814     suf=$1
 815     shift
 816     for v; do
 817         enabled $v && printf "%s\n" ${v%$suf}
 818     done
 819 }
 820
 821 append(){
 822     var=$1
 823     shift
 824     eval "$var=\"\$$var $*\""
 825 }
 826
 827 prepend(){
 828     var=$1
 829     shift
 830     eval "$var=\"$* \$$var\""
 831 }
 832
 833 unique(){
 834     var=$1
 835     uniq_list=""
 836     for tok in $(eval echo \$$var); do
 837         uniq_list="$(filter_out $tok $uniq_list) $tok"
 838     done
 839     eval "$var=\"${uniq_list}\""
 840 }
 841
 842 add_cppflags(){
 843     append CPPFLAGS "$@"
 844 }
 845
 846 add_cflags(){
 847     append CFLAGS $($cflags_filter "$@")
 848 }
 849
 850 add_cflags_headers(){
 851     append CFLAGS_HEADERS $($cflags_filter "$@")
 852 }
 853
 854 add_cxxflags(){
 855     append CXXFLAGS $($cflags_filter "$@")
 856 }
 857
 858 add_asflags(){
 859     append ASFLAGS $($asflags_filter "$@")
 860 }
 861
 862 add_objcflags(){
 863     append OBJCFLAGS $($objcflags_filter "$@")
 864 }
 865
 866 add_ldflags(){
 867     append LDFLAGS $($ldflags_filter "$@")
 868 }
 869
 870 add_ldexeflags(){
 871     append LDEXEFLAGS $($ldflags_filter "$@")
 872 }
 873
 874 add_ldlibflags(){
 875     append LDLIBFLAGS $($ldflags_filter "$@")
 876 }
 877
 878 add_stripflags(){
 879     append ASMSTRIPFLAGS "$@"
 880 }
 881
 882 add_extralibs(){
 883     prepend extralibs $($ldflags_filter "$@")
 884 }
 885
 886 add_host_cppflags(){
 887     append host_cppflags "$@"
 888 }
 889
 890 add_host_cflags(){
 891     append host_cflags $($host_cflags_filter "$@")
 892 }
 893
 894 add_host_ldflags(){
 895     append host_ldflags $($host_ldflags_filter "$@")
 896 }
 897
 898 add_compat(){
 899     append compat_objs $1
 900     shift
 901     map 'add_cppflags -D$v' "$@"
 902 }
 903
 904 check_cmd(){
 905     log "$@"
 906     "$@" >> $logfile 2>&1
 907 }
 908
 909 check_stat(){
 910     log check_stat "$@"
 911     stat "$1" >> $logfile 2>&1
 912 }
 913
 914 cc_o(){
 915     eval printf '%s\\n' $CC_O
 916 }
 917
 918 cc_e(){
 919     eval printf '%s\\n' $CC_E
 920 }
 921
 922 check_cc(){
 923     log check_cc "$@"
 924     cat > $TMPC
 925     log_file $TMPC
 926     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 927 }
 928
 929 check_cxx(){
 930     log check_cxx "$@"
 931     cat > $TMPCPP
 932     log_file $TMPCPP
 933     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 934 }
 935
 936 check_objcc(){
 937     log check_objcc "$@"
 938     cat > $TMPM
 939     log_file $TMPM
 940     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 941 }
 942
 943 check_cpp(){
 944     log check_cpp "$@"
 945     cat > $TMPC
 946     log_file $TMPC
 947     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 948 }
 949
 950 as_o(){
 951     eval printf '%s\\n' $AS_O
 952 }
 953
 954 check_as(){
 955     log check_as "$@"
 956     cat > $TMPS
 957     log_file $TMPS
 958     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 959 }
 960
 961 check_inline_asm(){
 962     log check_inline_asm "$@"
 963     name="$1"
 964     code="$2"
 965     shift 2
 966     disable $name
 967     check_cc "$@" <<EOF && enable $name
 968 void foo(void){ __asm__ volatile($code); }
 969 EOF
 970 }
 971
 972 check_inline_asm_flags(){
 973     log check_inline_asm_flags "$@"
 974     name="$1"
 975     code="$2"
 976     flags=''
 977     shift 2
 978     while [ "$1" != "" ]; do
 979       append flags $1
 980       shift
 981     done;
 982     disable $name
 983     cat > $TMPC <<EOF
 984 void foo(void){ __asm__ volatile($code); }
 985 EOF
 986     log_file $TMPC
 987     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 988     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 989 }
 990
 991 check_insn(){
 992     log check_insn "$@"
 993     check_inline_asm ${1}_inline "\"$2\""
 994     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 995 }
 996
 997 check_x86asm(){
 998     log check_x86asm "$@"
 999     echo "$1" > $TMPS
1000     log_file $TMPS
1001     shift 1
1002     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1003 }
1004
1005 ld_o(){
1006     eval printf '%s\\n' $LD_O
1007 }
1008
1009 check_ld(){
1010     log check_ld "$@"
1011     type=$1
1012     shift 1
1013     flags=$(filter_out '-l*|*.so' $@)
1014     libs=$(filter '-l*|*.so' $@)
1015     check_$type $($cflags_filter $flags) || return
1016     flags=$($ldflags_filter $flags)
1017     libs=$($ldflags_filter $libs)
1018     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1019 }
1020
1021 print_include(){
1022     hdr=$1
1023     test "${hdr%.h}" = "${hdr}" &&
1024         echo "#include $hdr"    ||
1025         echo "#include <$hdr>"
1026 }
1027
1028 check_code(){
1029     log check_code "$@"
1030     check=$1
1031     headers=$2
1032     code=$3
1033     shift 3
1034     {
1035         for hdr in $headers; do
1036             print_include $hdr
1037         done
1038         echo "int main(void) { $code; return 0; }"
1039     } | check_$check "$@"
1040 }
1041
1042 check_cppflags(){
1043     log check_cppflags "$@"
1044     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1045 #include <stdlib.h>
1046 EOF
1047 }
1048
1049 test_cflags(){
1050     log test_cflags "$@"
1051     set -- $($cflags_filter "$@")
1052     check_cc "$@" <<EOF
1053 int x;
1054 EOF
1055 }
1056
1057 check_cflags(){
1058     log check_cflags "$@"
1059     test_cflags "$@" && add_cflags "$@"
1060 }
1061
1062 check_cxxflags(){
1063     log check_cxxflags "$@"
1064     set -- $($cflags_filter "$@")
1065     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1066 int x;
1067 EOF
1068 }
1069
1070 test_objcflags(){
1071     log test_objcflags "$@"
1072     set -- $($objcflags_filter "$@")
1073     check_objcc "$@" <<EOF
1074 int x;
1075 EOF
1076 }
1077
1078 check_objcflags(){
1079     log check_objcflags "$@"
1080     test_objcflags "$@" && add_objcflags "$@"
1081 }
1082
1083 test_ldflags(){
1084     log test_ldflags "$@"
1085     check_ld "cc" "$@" <<EOF
1086 int main(void){ return 0; }
1087 EOF
1088 }
1089
1090 check_ldflags(){
1091     log check_ldflags "$@"
1092     test_ldflags "$@" && add_ldflags "$@"
1093 }
1094
1095 test_stripflags(){
1096     log test_stripflags "$@"
1097     # call check_cc to get a fresh TMPO
1098     check_cc <<EOF
1099 int main(void) { return 0; }
1100 EOF
1101     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1102 }
1103
1104 check_stripflags(){
1105     log check_stripflags "$@"
1106     test_stripflags "$@" && add_stripflags "$@"
1107 }
1108
1109 check_header(){
1110     log check_header "$@"
1111     header=$1
1112     shift
1113     disable_safe $header
1114     check_cpp "$@" <<EOF && enable_safe $header
1115 #include <$header>
1116 int x;
1117 EOF
1118 }
1119
1120 check_header_objcc(){
1121     log check_header_objcc "$@"
1122     rm -f -- "$TMPO"
1123     header=$1
1124     shift
1125     disable_safe $header
1126     {
1127        echo "#include <$header>"
1128        echo "int main(void) { return 0; }"
1129     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1130 }
1131
1132 check_apple_framework(){
1133     log check_apple_framework "$@"
1134     framework="$1"
1135     name="$(tolower $framework)"
1136     header="${framework}/${framework}.h"
1137     disable $name
1138     check_header_objcc $header && enable $name && add_extralibs "-framework $framework"
1139 }
1140
1141 check_func(){
1142     log check_func "$@"
1143     func=$1
1144     shift
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 extern int $func();
1148 int main(void){ $func(); }
1149 EOF
1150 }
1151
1152 check_complexfunc(){
1153     log check_complexfunc "$@"
1154     func=$1
1155     narg=$2
1156     shift 2
1157     test $narg = 2 && args="f, g" || args="f * I"
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 #include <complex.h>
1161 #include <math.h>
1162 float foo(complex float f, complex float g) { return $func($args); }
1163 int main(void){ return (int) foo; }
1164 EOF
1165 }
1166
1167 check_mathfunc(){
1168     log check_mathfunc "$@"
1169     func=$1
1170     narg=$2
1171     shift 2
1172     test $narg = 2 && args="f, g" || args="f"
1173     disable $func
1174     check_ld "cc" "$@" <<EOF && enable $func
1175 #include <math.h>
1176 float foo(float f, float g) { return $func($args); }
1177 int main(void){ return (int) foo; }
1178 EOF
1179 }
1180
1181 check_func_headers(){
1182     log check_func_headers "$@"
1183     headers=$1
1184     funcs=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "#include <stdint.h>"
1191         for func in $funcs; do
1192             echo "long check_$func(void) { return (long) $func; }"
1193         done
1194         echo "int main(void) { int ret = 0;"
1195         # LTO could optimize out the test functions without this
1196         for func in $funcs; do
1197             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1198         done
1199         echo "return ret; }"
1200     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && add_extralibs "$@"
1259 }
1260
1261 check_lib_cpp(){
1262     log check_lib_cpp "$@"
1263     headers="$1"
1264     classes="$2"
1265     shift 2
1266     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1267 }
1268
1269 check_pkg_config(){
1270     log check_pkg_config "$@"
1271     name="$1"
1272     pkg_version="$2"
1273     pkg="${2%% *}"
1274     headers="$3"
1275     funcs="$4"
1276     shift 4
1277     disable $name
1278     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1279     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1280     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1281     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1282         enable $name &&
1283         set_safe "${pkg}_cflags"    $pkg_cflags &&
1284         set_safe "${pkg}_extralibs" $pkg_libs
1285 }
1286
1287 check_exec(){
1288     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1289 }
1290
1291 check_exec_crash(){
1292     log check_exec_crash "$@"
1293     code=$(cat)
1294
1295     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1296     # are safe but may not be available everywhere.  Thus we use
1297     # raise(SIGTERM) instead.  The check is run in a subshell so we
1298     # can redirect the "Terminated" message from the shell.  SIGBUS
1299     # is not defined by standard C so it is used conditionally.
1300
1301     (check_exec "$@") >> $logfile 2>&1 <<EOF
1302 #include <signal.h>
1303 static void sighandler(int sig){
1304     raise(SIGTERM);
1305 }
1306 int foo(void){
1307     $code
1308 }
1309 int (*func_ptr)(void) = foo;
1310 int main(void){
1311     signal(SIGILL, sighandler);
1312     signal(SIGFPE, sighandler);
1313     signal(SIGSEGV, sighandler);
1314 #ifdef SIGBUS
1315     signal(SIGBUS, sighandler);
1316 #endif
1317     return func_ptr();
1318 }
1319 EOF
1320 }
1321
1322 check_type(){
1323     log check_type "$@"
1324     headers=$1
1325     type=$2
1326     shift 2
1327     disable_safe "$type"
1328     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1329 }
1330
1331 check_struct(){
1332     log check_struct "$@"
1333     headers=$1
1334     struct=$2
1335     member=$3
1336     shift 3
1337     disable_safe "${struct}_${member}"
1338     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1339         enable_safe "${struct}_${member}"
1340 }
1341
1342 check_builtin(){
1343     log check_builtin "$@"
1344     name=$1
1345     headers=$2
1346     builtin=$3
1347     shift 3
1348     disable "$name"
1349     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1350 }
1351
1352 check_compile_assert(){
1353     log check_compile_assert "$@"
1354     name=$1
1355     headers=$2
1356     condition=$3
1357     shift 3
1358     disable "$name"
1359     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1360 }
1361
1362 require(){
1363     log require "$@"
1364     name_version="$1"
1365     name="${1%% *}"
1366     headers="$2"
1367     func="$3"
1368     shift 3
1369     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1370 }
1371
1372 require_cpp(){
1373     name="$1"
1374     headers="$2"
1375     classes="$3"
1376     shift 3
1377     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1378 }
1379
1380 require_header(){
1381     log require "$@"
1382     header="$1"
1383     shift
1384     check_header "$header" "$@" || die "ERROR: $header header not found"
1385 }
1386
1387 require_cpp_condition(){
1388     log require "$@"
1389     header="$1"
1390     condition="$2"
1391     shift 2
1392     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1393 }
1394
1395 use_pkg_config(){
1396     log use_pkg_config "$@"
1397     pkg="${2%% *}"
1398     check_pkg_config "$@" || return 1
1399     add_cflags    $(get_safe "${pkg}_cflags")
1400     add_extralibs $(get_safe "${pkg}_extralibs")
1401 }
1402
1403 require_pkg_config(){
1404     log require_pkg_config "$@"
1405     pkg_version="$2"
1406     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1407 }
1408
1409 hostcc_e(){
1410     eval printf '%s\\n' $HOSTCC_E
1411 }
1412
1413 hostcc_o(){
1414     eval printf '%s\\n' $HOSTCC_O
1415 }
1416
1417 check_host_cc(){
1418     log check_host_cc "$@"
1419     cat > $TMPC
1420     log_file $TMPC
1421     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1422 }
1423
1424 check_host_cpp(){
1425     log check_host_cpp "$@"
1426     cat > $TMPC
1427     log_file $TMPC
1428     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1429 }
1430
1431 check_host_cppflags(){
1432     log check_host_cppflags "$@"
1433     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1434 #include <stdlib.h>
1435 EOF
1436 }
1437
1438 check_host_cflags(){
1439     log check_host_cflags "$@"
1440     set -- $($host_cflags_filter "$@")
1441     check_host_cc "$@" <<EOF && append host_cflags "$@"
1442 int x;
1443 EOF
1444 }
1445
1446 check_host_cpp_condition(){
1447     log check_host_cpp_condition "$@"
1448     header=$1
1449     condition=$2
1450     shift 2
1451     check_host_cpp "$@" <<EOF
1452 #include <$header>
1453 #if !($condition)
1454 #error "unsatisfied condition: $condition"
1455 #endif
1456 EOF
1457 }
1458
1459 cp_if_changed(){
1460     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1461     mkdir -p "$(dirname $2)"
1462     cp -f "$1" "$2"
1463 }
1464
1465 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1466 # system-dependent things.
1467
1468 AVCODEC_COMPONENTS="
1469     bsfs
1470     decoders
1471     encoders
1472     hwaccels
1473     parsers
1474 "
1475
1476 AVDEVICE_COMPONENTS="
1477     indevs
1478     outdevs
1479 "
1480
1481 AVFILTER_COMPONENTS="
1482     filters
1483 "
1484
1485 AVFORMAT_COMPONENTS="
1486     demuxers
1487     muxers
1488     protocols
1489 "
1490
1491 AVRESAMPLE_COMPONENTS=""
1492
1493 AVUTIL_COMPONENTS=""
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500     $AVRESAMPLE_COMPONENTS
1501     $AVUTIL_COMPONENTS
1502 "
1503
1504 EXAMPLE_LIST="
1505     avio_dir_cmd_example
1506     avio_reading_example
1507     decode_audio_example
1508     decode_video_example
1509     demuxing_decoding_example
1510     encode_audio_example
1511     encode_video_example
1512     extract_mvs_example
1513     filter_audio_example
1514     filtering_audio_example
1515     filtering_video_example
1516     http_multiclient_example
1517     hw_decode_example
1518     metadata_example
1519     muxing_example
1520     qsvdec_example
1521     remuxing_example
1522     resampling_audio_example
1523     scaling_video_example
1524     transcode_aac_example
1525     transcoding_example
1526 "
1527
1528 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1529     alsa
1530     appkit
1531     avfoundation
1532     bzlib
1533     coreimage
1534     iconv
1535     jack
1536     libxcb
1537     libxcb_shm
1538     libxcb_shape
1539     libxcb_xfixes
1540     lzma
1541     schannel
1542     sdl2
1543     securetransport
1544     sndio
1545     xlib
1546     zlib
1547 "
1548
1549 EXTERNAL_LIBRARY_GPL_LIST="
1550     avisynth
1551     frei0r
1552     libcdio
1553     librubberband
1554     libvidstab
1555     libx264
1556     libx265
1557     libxavs
1558     libxvid
1559 "
1560
1561 EXTERNAL_LIBRARY_NONFREE_LIST="
1562     decklink
1563     libndi_newtek
1564     libfdk_aac
1565     openssl
1566 "
1567
1568 EXTERNAL_LIBRARY_VERSION3_LIST="
1569     gmp
1570     libopencore_amrnb
1571     libopencore_amrwb
1572     libvo_amrwbenc
1573     rkmpp
1574 "
1575
1576 EXTERNAL_LIBRARY_GPLV3_LIST="
1577     libsmbclient
1578 "
1579
1580 EXTERNAL_LIBRARY_LIST="
1581     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1582     $EXTERNAL_LIBRARY_GPL_LIST
1583     $EXTERNAL_LIBRARY_NONFREE_LIST
1584     $EXTERNAL_LIBRARY_VERSION3_LIST
1585     $EXTERNAL_LIBRARY_GPLV3_LIST
1586     chromaprint
1587     gcrypt
1588     gnutls
1589     jni
1590     ladspa
1591     libass
1592     libbluray
1593     libbs2b
1594     libcaca
1595     libcelt
1596     libdc1394
1597     libdrm
1598     libflite
1599     libfontconfig
1600     libfreetype
1601     libfribidi
1602     libgme
1603     libgsm
1604     libiec61883
1605     libilbc
1606     libkvazaar
1607     libmodplug
1608     libmp3lame
1609     libmysofa
1610     libopencv
1611     libopenh264
1612     libopenjpeg
1613     libopenmpt
1614     libopus
1615     libpulse
1616     librsvg
1617     librtmp
1618     libshine
1619     libsmbclient
1620     libsnappy
1621     libsoxr
1622     libspeex
1623     libssh
1624     libtesseract
1625     libtheora
1626     libtwolame
1627     libv4l2
1628     libvmaf
1629     libvorbis
1630     libvpx
1631     libwavpack
1632     libwebp
1633     libxml2
1634     libzimg
1635     libzmq
1636     libzvbi
1637     mediacodec
1638     openal
1639     opencl
1640     opengl
1641 "
1642
1643 HWACCEL_AUTODETECT_LIBRARY_LIST="
1644     audiotoolbox
1645     crystalhd
1646     cuda
1647     cuvid
1648     d3d11va
1649     dxva2
1650     nvenc
1651     vaapi
1652     vda
1653     vdpau
1654     videotoolbox
1655     v4l2_m2m
1656     xvmc
1657 "
1658
1659 HWACCEL_LIBRARY_NONFREE_LIST="
1660     cuda_sdk
1661     libnpp
1662 "
1663
1664 HWACCEL_LIBRARY_LIST="
1665     $HWACCEL_AUTODETECT_LIBRARY_LIST
1666     $HWACCEL_LIBRARY_NONFREE_LIST
1667     libmfx
1668     mmal
1669     omx
1670 "
1671
1672 DOCUMENT_LIST="
1673     doc
1674     htmlpages
1675     manpages
1676     podpages
1677     txtpages
1678 "
1679
1680 FEATURE_LIST="
1681     ftrapv
1682     gray
1683     hardcoded_tables
1684     omx_rpi
1685     runtime_cpudetect
1686     safe_bitstream_reader
1687     shared
1688     small
1689     static
1690     swscale_alpha
1691 "
1692
1693 LIBRARY_LIST="
1694     avcodec
1695     avdevice
1696     avfilter
1697     avformat
1698     avresample
1699     avutil
1700     postproc
1701     swresample
1702     swscale
1703 "
1704
1705 LICENSE_LIST="
1706     gpl
1707     nonfree
1708     version3
1709 "
1710
1711 PROGRAM_LIST="
1712     ffplay
1713     ffprobe
1714     ffserver
1715     ffmpeg
1716 "
1717
1718 SUBSYSTEM_LIST="
1719     dct
1720     dwt
1721     error_resilience
1722     faan
1723     fast_unaligned
1724     fft
1725     lsp
1726     lzo
1727     mdct
1728     pixelutils
1729     network
1730     rdft
1731 "
1732
1733 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1734 CONFIG_LIST="
1735     $DOCUMENT_LIST
1736     $EXAMPLE_LIST
1737     $EXTERNAL_LIBRARY_LIST
1738     $HWACCEL_LIBRARY_LIST
1739     $FEATURE_LIST
1740     $LICENSE_LIST
1741     $LIBRARY_LIST
1742     $PROGRAM_LIST
1743     $SUBSYSTEM_LIST
1744     autodetect
1745     fontconfig
1746     linux_perf
1747     memory_poisoning
1748     neon_clobber_test
1749     ossfuzz
1750     pic
1751     thumb
1752     valgrind_backtrace
1753     xmm_clobber_test
1754     $COMPONENT_LIST
1755 "
1756
1757 THREADS_LIST="
1758     pthreads
1759     os2threads
1760     w32threads
1761 "
1762
1763 ATOMICS_LIST="
1764     atomics_gcc
1765     atomics_suncc
1766     atomics_win32
1767 "
1768
1769 AUTODETECT_LIBS="
1770     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1771     $HWACCEL_AUTODETECT_LIBRARY_LIST
1772     $THREADS_LIST
1773 "
1774
1775 ARCH_LIST="
1776     aarch64
1777     alpha
1778     arm
1779     avr32
1780     avr32_ap
1781     avr32_uc
1782     bfin
1783     ia64
1784     m68k
1785     mips
1786     mips64
1787     parisc
1788     ppc
1789     ppc64
1790     s390
1791     sh4
1792     sparc
1793     sparc64
1794     tilegx
1795     tilepro
1796     tomi
1797     x86
1798     x86_32
1799     x86_64
1800 "
1801
1802 ARCH_EXT_LIST_ARM="
1803     armv5te
1804     armv6
1805     armv6t2
1806     armv8
1807     neon
1808     vfp
1809     vfpv3
1810     setend
1811 "
1812
1813 ARCH_EXT_LIST_MIPS="
1814     mipsfpu
1815     mips32r2
1816     mips32r5
1817     mips64r2
1818     mips32r6
1819     mips64r6
1820     mipsdsp
1821     mipsdspr2
1822     msa
1823 "
1824
1825 ARCH_EXT_LIST_LOONGSON="
1826     loongson2
1827     loongson3
1828     mmi
1829 "
1830
1831 ARCH_EXT_LIST_X86_SIMD="
1832     aesni
1833     amd3dnow
1834     amd3dnowext
1835     avx
1836     avx2
1837     fma3
1838     fma4
1839     mmx
1840     mmxext
1841     sse
1842     sse2
1843     sse3
1844     sse4
1845     sse42
1846     ssse3
1847     xop
1848 "
1849
1850 ARCH_EXT_LIST_PPC="
1851     altivec
1852     dcbzl
1853     ldbrx
1854     power8
1855     ppc4xx
1856     vsx
1857 "
1858
1859 ARCH_EXT_LIST_X86="
1860     $ARCH_EXT_LIST_X86_SIMD
1861     cpunop
1862     i686
1863 "
1864
1865 ARCH_EXT_LIST="
1866     $ARCH_EXT_LIST_ARM
1867     $ARCH_EXT_LIST_PPC
1868     $ARCH_EXT_LIST_X86
1869     $ARCH_EXT_LIST_MIPS
1870     $ARCH_EXT_LIST_LOONGSON
1871 "
1872
1873 ARCH_FEATURES="
1874     aligned_stack
1875     fast_64bit
1876     fast_clz
1877     fast_cmov
1878     local_aligned_8
1879     local_aligned_16
1880     local_aligned_32
1881     simd_align_16
1882     simd_align_32
1883 "
1884
1885 BUILTIN_LIST="
1886     atomic_cas_ptr
1887     machine_rw_barrier
1888     MemoryBarrier
1889     mm_empty
1890     rdtsc
1891     sarestart
1892     sem_timedwait
1893     sync_val_compare_and_swap
1894 "
1895 HAVE_LIST_CMDLINE="
1896     inline_asm
1897     symver
1898     x86asm
1899 "
1900
1901 HAVE_LIST_PUB="
1902     bigendian
1903     fast_unaligned
1904 "
1905
1906 HEADERS_LIST="
1907     altivec_h
1908     arpa_inet_h
1909     asm_types_h
1910     cdio_paranoia_h
1911     cdio_paranoia_paranoia_h
1912     cuda_h
1913     d3d11_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     dlfcn_h
1923     dxgidebug_h
1924     dxva_h
1925     ES2_gl_h
1926     gsm_h
1927     io_h
1928     mach_mach_time_h
1929     machine_ioctl_bt848_h
1930     machine_ioctl_meteor_h
1931     malloc_h
1932     opencv2_core_core_c_h
1933     openjpeg_2_3_openjpeg_h
1934     openjpeg_2_2_openjpeg_h
1935     openjpeg_2_1_openjpeg_h
1936     openjpeg_2_0_openjpeg_h
1937     openjpeg_1_5_openjpeg_h
1938     OpenGL_gl3_h
1939     poll_h
1940     soundcard_h
1941     stdatomic_h
1942     sys_mman_h
1943     sys_param_h
1944     sys_resource_h
1945     sys_select_h
1946     sys_soundcard_h
1947     sys_time_h
1948     sys_un_h
1949     sys_videoio_h
1950     termios_h
1951     udplite_h
1952     unistd_h
1953     valgrind_valgrind_h
1954     windows_h
1955     winsock2_h
1956 "
1957
1958 INTRINSICS_LIST="
1959     intrinsics_neon
1960 "
1961
1962 COMPLEX_FUNCS="
1963     cabs
1964     cexp
1965 "
1966
1967 MATH_FUNCS="
1968     atanf
1969     atan2f
1970     cbrt
1971     cbrtf
1972     copysign
1973     cosf
1974     erf
1975     exp2
1976     exp2f
1977     expf
1978     hypot
1979     isfinite
1980     isinf
1981     isnan
1982     ldexpf
1983     llrint
1984     llrintf
1985     log2
1986     log2f
1987     log10f
1988     lrint
1989     lrintf
1990     powf
1991     rint
1992     round
1993     roundf
1994     sinf
1995     trunc
1996     truncf
1997 "
1998
1999 SYSTEM_FUNCS="
2000     access
2001     aligned_malloc
2002     arc4random
2003     clock_gettime
2004     closesocket
2005     CommandLineToArgvW
2006     CoTaskMemFree
2007     CryptGenRandom
2008     fcntl
2009     flt_lim
2010     fork
2011     getaddrinfo
2012     gethrtime
2013     getopt
2014     GetProcessAffinityMask
2015     GetProcessMemoryInfo
2016     GetProcessTimes
2017     getrusage
2018     GetSystemTimeAsFileTime
2019     gettimeofday
2020     glob
2021     glXGetProcAddress
2022     gmtime_r
2023     inet_aton
2024     isatty
2025     jack_port_get_latency_range
2026     kbhit
2027     LoadLibrary
2028     localtime_r
2029     lstat
2030     lzo1x_999_compress
2031     mach_absolute_time
2032     MapViewOfFile
2033     memalign
2034     mkstemp
2035     mmap
2036     mprotect
2037     nanosleep
2038     PeekNamedPipe
2039     posix_memalign
2040     pthread_cancel
2041     sched_getaffinity
2042     SetConsoleTextAttribute
2043     SetConsoleCtrlHandler
2044     setmode
2045     setrlimit
2046     Sleep
2047     strerror_r
2048     sysconf
2049     sysctl
2050     usleep
2051     UTGetOSTypeFromString
2052     VirtualAlloc
2053     wglGetProcAddress
2054 "
2055
2056 TOOLCHAIN_FEATURES="
2057     as_dn_directive
2058     as_fpu_directive
2059     as_func
2060     as_object_arch
2061     asm_mod_q
2062     attribute_may_alias
2063     attribute_packed
2064     blocks_extension
2065     ebp_available
2066     ebx_available
2067     gnu_as
2068     gnu_windres
2069     ibm_asm
2070     inline_asm_direct_symbol_refs
2071     inline_asm_labels
2072     inline_asm_nonlocal_labels
2073     pragma_deprecated
2074     rsync_contimeout
2075     symver_asm_label
2076     symver_gnu_asm
2077     vfp_args
2078     xform_asm
2079     xmm_clobbers
2080 "
2081
2082 TYPES_LIST="
2083     CONDITION_VARIABLE_Ptr
2084     kCMVideoCodecType_HEVC
2085     socklen_t
2086     struct_addrinfo
2087     struct_group_source_req
2088     struct_ip_mreq_source
2089     struct_ipv6_mreq
2090     struct_msghdr_msg_flags
2091     struct_pollfd
2092     struct_rusage_ru_maxrss
2093     struct_sctp_event_subscribe
2094     struct_sockaddr_in6
2095     struct_sockaddr_sa_len
2096     struct_sockaddr_storage
2097     struct_stat_st_mtim_tv_nsec
2098     struct_v4l2_frmivalenum_discrete
2099 "
2100
2101 HAVE_LIST="
2102     $ARCH_EXT_LIST
2103     $(add_suffix _external $ARCH_EXT_LIST)
2104     $(add_suffix _inline   $ARCH_EXT_LIST)
2105     $ARCH_FEATURES
2106     $ATOMICS_LIST
2107     $BUILTIN_LIST
2108     $COMPLEX_FUNCS
2109     $HAVE_LIST_CMDLINE
2110     $HAVE_LIST_PUB
2111     $HEADERS_LIST
2112     $INTRINSICS_LIST
2113     $MATH_FUNCS
2114     $SYSTEM_FUNCS
2115     $THREADS_LIST
2116     $TOOLCHAIN_FEATURES
2117     $TYPES_LIST
2118     atomics_native
2119     dos_paths
2120     libc_msvcrt
2121     makeinfo
2122     makeinfo_html
2123     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2124     perl
2125     pod2man
2126     section_data_rel_ro
2127     texi2html
2128     threads
2129     uwp
2130     vaapi_drm
2131     vaapi_x11
2132     vdpau_x11
2133     winrt
2134 "
2135
2136 # options emitted with CONFIG_ prefix but not available on the command line
2137 CONFIG_EXTRA="
2138     aandcttables
2139     ac3dsp
2140     audio_frame_queue
2141     audiodsp
2142     blockdsp
2143     bswapdsp
2144     cabac
2145     dirac_parse
2146     dvprofile
2147     exif
2148     faandct
2149     faanidct
2150     fdctdsp
2151     flacdsp
2152     fmtconvert
2153     frame_thread_encoder
2154     g722dsp
2155     golomb
2156     gplv3
2157     h263dsp
2158     h264chroma
2159     h264dsp
2160     h264parse
2161     h264pred
2162     h264qpel
2163     hevcparse
2164     hpeldsp
2165     huffman
2166     huffyuvdsp
2167     huffyuvencdsp
2168     idctdsp
2169     iirfilter
2170     mdct15
2171     intrax8
2172     iso_media
2173     ividsp
2174     jpegtables
2175     lgplv3
2176     libx262
2177     llauddsp
2178     llviddsp
2179     llvidencdsp
2180     lpc
2181     lzf
2182     me_cmp
2183     mpeg_er
2184     mpegaudio
2185     mpegaudiodsp
2186     mpegaudioheader
2187     mpegvideo
2188     mpegvideoenc
2189     mss34dsp
2190     pixblockdsp
2191     qpeldsp
2192     qsv
2193     qsvdec
2194     qsvenc
2195     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 loongson2_deps="mips"
2325 loongson3_deps="mips"
2326 mipsfpu_deps="mips"
2327 mipsdsp_deps="mips"
2328 mipsdspr2_deps="mips"
2329 mips32r2_deps="mips"
2330 mips32r5_deps="mips"
2331 mips32r6_deps="mips"
2332 mips64r2_deps="mips"
2333 mips64r6_deps="mips"
2334 msa_deps="mipsfpu"
2335 mmi_deps="mips"
2336
2337 altivec_deps="ppc"
2338 dcbzl_deps="ppc"
2339 ldbrx_deps="ppc"
2340 ppc4xx_deps="ppc"
2341 vsx_deps="altivec"
2342 power8_deps="vsx"
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"
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 dct_select="rdft"
2399 dirac_parse_select="golomb"
2400 error_resilience_select="me_cmp"
2401 faandct_deps="faan fdctdsp"
2402 faanidct_deps="faan idctdsp"
2403 h264dsp_select="startcode"
2404 hevcparse_select="golomb"
2405 frame_thread_encoder_deps="encoders threads"
2406 intrax8_select="blockdsp idctdsp"
2407 mdct_select="fft"
2408 mdct15_select="fft"
2409 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2410 mpeg_er_select="error_resilience"
2411 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2412 mpegaudiodsp_select="dct"
2413 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2414 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2415 vc1dsp_select="h264chroma qpeldsp startcode"
2416 rdft_select="fft"
2417
2418 # decoders / encoders
2419 aac_decoder_select="mdct15 mdct sinewin"
2420 aac_fixed_decoder_select="mdct sinewin"
2421 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2422 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2423 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2424 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2425 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2426 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2427 adpcm_g722_decoder_select="g722dsp"
2428 adpcm_g722_encoder_select="g722dsp"
2429 aic_decoder_select="golomb idctdsp"
2430 alac_encoder_select="lpc"
2431 als_decoder_select="bswapdsp"
2432 amrnb_decoder_select="lsp"
2433 amrwb_decoder_select="lsp"
2434 amv_decoder_select="sp5x_decoder exif"
2435 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2436 ape_decoder_select="bswapdsp llauddsp"
2437 apng_decoder_select="zlib"
2438 apng_encoder_select="llvidencdsp zlib"
2439 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2440 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2441 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2442 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2443 atrac1_decoder_select="mdct sinewin"
2444 atrac3_decoder_select="mdct"
2445 atrac3p_decoder_select="mdct sinewin"
2446 avrn_decoder_select="exif jpegtables"
2447 bink_decoder_select="blockdsp hpeldsp"
2448 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2449 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2450 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2451 clearvideo_decoder_select="idctdsp"
2452 cllc_decoder_select="bswapdsp"
2453 comfortnoise_encoder_select="lpc"
2454 cook_decoder_select="audiodsp mdct sinewin"
2455 cscd_decoder_select="lzo"
2456 cscd_decoder_suggest="zlib"
2457 dca_decoder_select="mdct"
2458 dds_decoder_select="texturedsp"
2459 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2460 dnxhd_decoder_select="blockdsp idctdsp"
2461 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2462 dolby_e_decoder_select="mdct"
2463 dvvideo_decoder_select="dvprofile idctdsp"
2464 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2465 dxa_decoder_select="zlib"
2466 dxv_decoder_select="lzf texturedsp"
2467 eac3_decoder_select="ac3_decoder"
2468 eac3_encoder_select="ac3_encoder"
2469 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2470 eatgq_decoder_select="aandcttables"
2471 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2472 exr_decoder_select="zlib"
2473 ffv1_decoder_select="rangecoder"
2474 ffv1_encoder_select="rangecoder"
2475 ffvhuff_decoder_select="huffyuv_decoder"
2476 ffvhuff_encoder_select="huffyuv_encoder"
2477 fic_decoder_select="golomb"
2478 flac_decoder_select="flacdsp"
2479 flac_encoder_select="bswapdsp flacdsp lpc"
2480 flashsv2_decoder_select="zlib"
2481 flashsv2_encoder_select="zlib"
2482 flashsv_decoder_select="zlib"
2483 flashsv_encoder_select="zlib"
2484 flv_decoder_select="h263_decoder"
2485 flv_encoder_select="h263_encoder"
2486 fourxm_decoder_select="blockdsp bswapdsp"
2487 fraps_decoder_select="bswapdsp huffman"
2488 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2489 g729_decoder_select="audiodsp"
2490 h261_decoder_select="mpegvideo"
2491 h261_encoder_select="aandcttables mpegvideoenc"
2492 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2493 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2494 h263i_decoder_select="h263_decoder"
2495 h263p_decoder_select="h263_decoder"
2496 h263p_encoder_select="h263_encoder"
2497 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2498 h264_decoder_suggest="error_resilience"
2499 hap_decoder_select="snappy texturedsp"
2500 hap_encoder_deps="libsnappy"
2501 hap_encoder_select="texturedspenc"
2502 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2503 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2504 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2505 iac_decoder_select="imc_decoder"
2506 imc_decoder_select="bswapdsp fft mdct sinewin"
2507 indeo3_decoder_select="hpeldsp"
2508 indeo4_decoder_select="ividsp"
2509 indeo5_decoder_select="ividsp"
2510 interplay_video_decoder_select="hpeldsp"
2511 jpegls_decoder_select="mjpeg_decoder"
2512 jv_decoder_select="blockdsp"
2513 lagarith_decoder_select="llviddsp"
2514 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2515 magicyuv_decoder_select="llviddsp"
2516 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2517 metasound_decoder_select="lsp mdct sinewin"
2518 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2519 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2520 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2521 mjpegb_decoder_select="mjpeg_decoder"
2522 mlp_decoder_select="mlp_parser"
2523 mlp_encoder_select="lpc"
2524 motionpixels_decoder_select="bswapdsp"
2525 mp1_decoder_select="mpegaudio"
2526 mp1float_decoder_select="mpegaudio"
2527 mp2_decoder_select="mpegaudio"
2528 mp2float_decoder_select="mpegaudio"
2529 mp3_decoder_select="mpegaudio"
2530 mp3adu_decoder_select="mpegaudio"
2531 mp3adufloat_decoder_select="mpegaudio"
2532 mp3float_decoder_select="mpegaudio"
2533 mp3on4_decoder_select="mpegaudio"
2534 mp3on4float_decoder_select="mpegaudio"
2535 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2536 mpc8_decoder_select="mpegaudiodsp"
2537 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2538 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2539 mpegvideo_decoder_select="mpegvideo"
2540 mpeg1video_decoder_select="mpegvideo"
2541 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2542 mpeg2video_decoder_select="mpegvideo"
2543 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2544 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2545 mpeg4_encoder_select="h263_encoder"
2546 msa1_decoder_select="mss34dsp"
2547 mscc_decoder_select="zlib"
2548 msmpeg4v1_decoder_select="h263_decoder"
2549 msmpeg4v2_decoder_select="h263_decoder"
2550 msmpeg4v2_encoder_select="h263_encoder"
2551 msmpeg4v3_decoder_select="h263_decoder"
2552 msmpeg4v3_encoder_select="h263_encoder"
2553 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2554 mts2_decoder_select="mss34dsp"
2555 mxpeg_decoder_select="mjpeg_decoder"
2556 nellymoser_decoder_select="mdct sinewin"
2557 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2558 nuv_decoder_select="idctdsp lzo"
2559 on2avc_decoder_select="mdct"
2560 opus_decoder_deps="swresample"
2561 opus_decoder_select="mdct15"
2562 opus_encoder_select="audio_frame_queue mdct15"
2563 png_decoder_select="zlib"
2564 png_encoder_select="llvidencdsp zlib"
2565 prores_decoder_select="blockdsp idctdsp"
2566 prores_encoder_select="fdctdsp"
2567 qcelp_decoder_select="lsp"
2568 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2569 ra_144_decoder_select="audiodsp"
2570 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2571 ralf_decoder_select="golomb"
2572 rawvideo_decoder_select="bswapdsp"
2573 rscc_decoder_select="zlib"
2574 rtjpeg_decoder_select="me_cmp"
2575 rv10_decoder_select="h263_decoder"
2576 rv10_encoder_select="h263_encoder"
2577 rv20_decoder_select="h263_decoder"
2578 rv20_encoder_select="h263_encoder"
2579 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2580 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2581 screenpresso_decoder_select="zlib"
2582 shorten_decoder_select="bswapdsp"
2583 sipr_decoder_select="lsp"
2584 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2585 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2586 sonic_decoder_select="golomb rangecoder"
2587 sonic_encoder_select="golomb rangecoder"
2588 sonic_ls_encoder_select="golomb rangecoder"
2589 sp5x_decoder_select="mjpeg_decoder"
2590 srgc_decoder_select="zlib"
2591 svq1_decoder_select="hpeldsp"
2592 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2593 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2594 svq3_decoder_suggest="zlib"
2595 tak_decoder_select="audiodsp"
2596 tdsc_decoder_select="zlib mjpeg_decoder"
2597 theora_decoder_select="vp3_decoder"
2598 thp_decoder_select="mjpeg_decoder"
2599 tiff_decoder_suggest="zlib lzma"
2600 tiff_encoder_suggest="zlib"
2601 truehd_decoder_select="mlp_parser"
2602 truehd_encoder_select="lpc"
2603 truemotion2_decoder_select="bswapdsp"
2604 truespeech_decoder_select="bswapdsp"
2605 tscc_decoder_select="zlib"
2606 twinvq_decoder_select="mdct lsp sinewin"
2607 txd_decoder_select="texturedsp"
2608 utvideo_decoder_select="bswapdsp llviddsp"
2609 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2610 vble_decoder_select="llviddsp"
2611 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2612 vc1_qsv_decoder_deps="libmfx"
2613 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2614 vc1image_decoder_select="vc1_decoder"
2615 vorbis_decoder_select="mdct"
2616 vorbis_encoder_select="mdct"
2617 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2618 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2619 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2620 vp6a_decoder_select="vp6_decoder"
2621 vp6f_decoder_select="vp6_decoder"
2622 vp7_decoder_select="h264pred videodsp vp8dsp"
2623 vp8_decoder_select="h264pred videodsp vp8dsp"
2624 vp9_decoder_select="videodsp vp9_parser"
2625 webp_decoder_select="vp8_decoder exif"
2626 wmalossless_decoder_select="llauddsp"
2627 wmapro_decoder_select="mdct sinewin wma_freqs"
2628 wmav1_decoder_select="mdct sinewin wma_freqs"
2629 wmav1_encoder_select="mdct sinewin wma_freqs"
2630 wmav2_decoder_select="mdct sinewin wma_freqs"
2631 wmav2_encoder_select="mdct sinewin wma_freqs"
2632 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2633 wmv1_decoder_select="h263_decoder"
2634 wmv1_encoder_select="h263_encoder"
2635 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2636 wmv2_encoder_select="h263_encoder wmv2dsp"
2637 wmv3_decoder_select="vc1_decoder"
2638 wmv3image_decoder_select="wmv3_decoder"
2639 xma1_decoder_select="wmapro_decoder"
2640 xma2_decoder_select="wmapro_decoder"
2641 zerocodec_decoder_select="zlib"
2642 zlib_decoder_select="zlib"
2643 zlib_encoder_select="zlib"
2644 zmbv_decoder_select="zlib"
2645 zmbv_encoder_select="zlib"
2646
2647 # hardware accelerators
2648 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2649 cuda_deps_any="libdl LoadLibrary"
2650 cuvid_deps="cuda"
2651 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2652 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2653 dxva2_extralibs="-luser32"
2654 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2655 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2656 vda_deps="vda_framework pthreads"
2657 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2658 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2659 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2660 xvmc_deps="X11_extensions_XvMClib_h"
2661
2662 h263_vaapi_hwaccel_deps="vaapi"
2663 h263_vaapi_hwaccel_select="h263_decoder"
2664 h263_videotoolbox_hwaccel_deps="videotoolbox"
2665 h263_videotoolbox_hwaccel_select="h263_decoder"
2666 h264_cuvid_hwaccel_deps="cuda cuvid"
2667 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2668 h264_d3d11va_hwaccel_deps="d3d11va"
2669 h264_d3d11va_hwaccel_select="h264_decoder"
2670 h264_d3d11va2_hwaccel_deps="d3d11va"
2671 h264_d3d11va2_hwaccel_select="h264_decoder"
2672 h264_dxva2_hwaccel_deps="dxva2"
2673 h264_dxva2_hwaccel_select="h264_decoder"
2674 h264_mediacodec_hwaccel_deps="mediacodec"
2675 h264_mmal_hwaccel_deps="mmal"
2676 h264_qsv_hwaccel_deps="libmfx"
2677 h264_vaapi_hwaccel_deps="vaapi"
2678 h264_vaapi_hwaccel_select="h264_decoder"
2679 h264_vda_hwaccel_deps="vda"
2680 h264_vda_hwaccel_select="h264_decoder"
2681 h264_vda_old_hwaccel_deps="vda"
2682 h264_vda_old_hwaccel_select="h264_decoder"
2683 h264_vdpau_hwaccel_deps="vdpau"
2684 h264_vdpau_hwaccel_select="h264_decoder"
2685 h264_videotoolbox_hwaccel_deps="videotoolbox"
2686 h264_videotoolbox_hwaccel_select="h264_decoder"
2687 hevc_cuvid_hwaccel_deps="cuda cuvid"
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_qsv_hwaccel_deps="libmfx"
2697 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2698 hevc_vaapi_hwaccel_select="hevc_decoder"
2699 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2700 hevc_vdpau_hwaccel_select="hevc_decoder"
2701 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2702 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2703 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2704 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2705 mpeg_xvmc_hwaccel_deps="xvmc"
2706 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2707 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2708 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2709 mpeg1_vdpau_hwaccel_deps="vdpau"
2710 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2711 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2712 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2713 mpeg1_xvmc_hwaccel_deps="xvmc"
2714 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2715 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2716 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2717 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2718 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2720 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_dxva2_hwaccel_deps="dxva2"
2722 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2724 mpeg2_mmal_hwaccel_deps="mmal"
2725 mpeg2_qsv_hwaccel_deps="libmfx"
2726 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2727 mpeg2_vaapi_hwaccel_deps="vaapi"
2728 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_vdpau_hwaccel_deps="vdpau"
2730 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2732 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_xvmc_hwaccel_deps="xvmc"
2734 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2735 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2736 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2737 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2738 mpeg4_mmal_hwaccel_deps="mmal"
2739 mpeg4_vaapi_hwaccel_deps="vaapi"
2740 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2741 mpeg4_vdpau_hwaccel_deps="vdpau"
2742 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2743 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2744 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2745 vc1_cuvid_hwaccel_deps="cuda cuvid"
2746 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2747 vc1_d3d11va_hwaccel_deps="d3d11va"
2748 vc1_d3d11va_hwaccel_select="vc1_decoder"
2749 vc1_d3d11va2_hwaccel_deps="d3d11va"
2750 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2751 vc1_dxva2_hwaccel_deps="dxva2"
2752 vc1_dxva2_hwaccel_select="vc1_decoder"
2753 vc1_mmal_hwaccel_deps="mmal"
2754 vc1_qsv_hwaccel_deps="libmfx"
2755 vc1_qsv_hwaccel_select="qsvdec_vc1"
2756 vc1_vaapi_hwaccel_deps="vaapi"
2757 vc1_vaapi_hwaccel_select="vc1_decoder"
2758 vc1_vdpau_hwaccel_deps="vdpau"
2759 vc1_vdpau_hwaccel_select="vc1_decoder"
2760 vp8_cuvid_hwaccel_deps="cuda cuvid"
2761 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2762 vp9_cuvid_hwaccel_deps="cuda cuvid"
2763 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2764 vp8_mediacodec_hwaccel_deps="mediacodec"
2765 vp8_qsv_hwaccel_deps="libmfx"
2766 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2767 vp9_d3d11va_hwaccel_select="vp9_decoder"
2768 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2769 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2770 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2771 vp9_dxva2_hwaccel_select="vp9_decoder"
2772 vp9_mediacodec_hwaccel_deps="mediacodec"
2773 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2774 vp9_vaapi_hwaccel_select="vp9_decoder"
2775 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2776 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2777 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2778 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2779 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2780
2781 # hardware-accelerated codecs
2782 omx_deps="libdl pthreads"
2783 omx_rpi_select="omx"
2784 qsvdec_select="qsv"
2785 qsvenc_select="qsv"
2786 vaapi_encode_deps="vaapi"
2787 v4l2_m2m_deps_any="linux_videodev2_h"
2788
2789 hwupload_cuda_filter_deps="cuda"
2790 scale_npp_filter_deps="cuda libnpp"
2791 scale_cuda_filter_deps="cuda_sdk"
2792 thumbnail_cuda_filter_deps="cuda_sdk"
2793
2794 nvenc_deps="cuda"
2795 nvenc_deps_any="libdl LoadLibrary"
2796 nvenc_encoder_deps="nvenc"
2797
2798 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2799 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2800 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2801 h264_cuvid_decoder_deps="cuda cuvid"
2802 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2803 h264_mediacodec_decoder_deps="mediacodec"
2804 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2805 h264_mmal_decoder_deps="mmal"
2806 h264_nvenc_encoder_deps="nvenc"
2807 h264_omx_encoder_deps="omx"
2808 h264_qsv_decoder_deps="libmfx"
2809 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2810 h264_qsv_encoder_deps="libmfx"
2811 h264_qsv_encoder_select="qsvenc"
2812 h264_rkmpp_decoder_deps="rkmpp"
2813 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2814 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2815 h264_vaapi_encoder_select="vaapi_encode golomb"
2816 h264_vda_decoder_deps="vda"
2817 h264_vda_decoder_select="h264_decoder"
2818 h264_vdpau_decoder_deps="vdpau"
2819 h264_vdpau_decoder_select="h264_decoder"
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="cuda 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_deps="libmfx"
2828 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2829 hevc_qsv_encoder_deps="libmfx"
2830 hevc_qsv_encoder_select="hevcparse qsvenc"
2831 hevc_rkmpp_decoder_deps="rkmpp"
2832 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2833 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2834 hevc_vaapi_encoder_select="vaapi_encode golomb"
2835 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2836 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2837 mjpeg_cuvid_decoder_deps="cuda cuvid"
2838 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2839 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2840 mpeg1_cuvid_decoder_deps="cuda cuvid"
2841 mpeg1_vdpau_decoder_deps="vdpau"
2842 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2843 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2844 mpeg2_crystalhd_decoder_select="crystalhd"
2845 mpeg2_cuvid_decoder_deps="cuda cuvid"
2846 mpeg2_mmal_decoder_deps="mmal"
2847 mpeg2_mediacodec_decoder_deps="mediacodec"
2848 mpeg2_qsv_decoder_deps="libmfx"
2849 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2850 mpeg2_qsv_encoder_deps="libmfx"
2851 mpeg2_qsv_encoder_select="qsvenc"
2852 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2853 mpeg2_vaapi_encoder_select="vaapi_encode"
2854 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2855 mpeg4_crystalhd_decoder_select="crystalhd"
2856 mpeg4_cuvid_decoder_deps="cuda cuvid"
2857 mpeg4_mediacodec_decoder_deps="mediacodec"
2858 mpeg4_mmal_decoder_deps="mmal"
2859 mpeg4_omx_encoder_deps="omx"
2860 mpeg4_vdpau_decoder_deps="vdpau"
2861 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2862 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2863 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2864 mpeg_vdpau_decoder_deps="vdpau"
2865 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2866 msmpeg4_crystalhd_decoder_select="crystalhd"
2867 nvenc_h264_encoder_select="h264_nvenc_encoder"
2868 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2869 vc1_crystalhd_decoder_select="crystalhd"
2870 vc1_cuvid_decoder_deps="cuda cuvid"
2871 vc1_mmal_decoder_deps="mmal"
2872 vc1_vdpau_decoder_deps="vdpau"
2873 vc1_vdpau_decoder_select="vc1_decoder"
2874 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2875 vp8_cuvid_decoder_deps="cuda cuvid"
2876 vp8_mediacodec_decoder_deps="mediacodec"
2877 vp8_qsv_decoder_deps="libmfx"
2878 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2879 vp8_rkmpp_decoder_deps="rkmpp"
2880 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2881 vp8_vaapi_encoder_select="vaapi_encode"
2882 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2883 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2884 vp9_cuvid_decoder_deps="cuda cuvid"
2885 vp9_mediacodec_decoder_deps="mediacodec"
2886 vp9_rkmpp_decoder_deps="rkmpp"
2887 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2888 vp9_vaapi_encoder_select="vaapi_encode"
2889 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2890 wmv3_crystalhd_decoder_select="crystalhd"
2891 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2892
2893 # parsers
2894 h264_parser_select="golomb h264dsp h264parse"
2895 hevc_parser_select="hevcparse"
2896 mpegaudio_parser_select="mpegaudioheader"
2897 mpegvideo_parser_select="mpegvideo"
2898 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2899 vc1_parser_select="vc1dsp"
2900
2901 # bitstream_filters
2902 mjpeg2jpeg_bsf_select="jpegtables"
2903
2904 # external libraries
2905 aac_at_decoder_deps="audiotoolbox"
2906 ac3_at_decoder_deps="audiotoolbox"
2907 ac3_at_decoder_select="ac3_parser"
2908 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2909 alac_at_decoder_deps="audiotoolbox"
2910 amr_nb_at_decoder_deps="audiotoolbox"
2911 avisynth_deps_any="libdl LoadLibrary"
2912 avisynth_demuxer_deps="avisynth"
2913 avisynth_demuxer_select="riffdec"
2914 eac3_at_decoder_deps="audiotoolbox"
2915 eac3_at_decoder_select="ac3_parser"
2916 gsm_ms_at_decoder_deps="audiotoolbox"
2917 ilbc_at_decoder_deps="audiotoolbox"
2918 mp1_at_decoder_deps="audiotoolbox"
2919 mp2_at_decoder_deps="audiotoolbox"
2920 mp3_at_decoder_deps="audiotoolbox"
2921 mp1_at_decoder_select="mpegaudioheader"
2922 mp2_at_decoder_select="mpegaudioheader"
2923 mp3_at_decoder_select="mpegaudioheader"
2924 pcm_alaw_at_decoder_deps="audiotoolbox"
2925 pcm_mulaw_at_decoder_deps="audiotoolbox"
2926 qdmc_at_decoder_deps="audiotoolbox"
2927 qdm2_at_decoder_deps="audiotoolbox"
2928 aac_at_encoder_deps="audiotoolbox"
2929 aac_at_encoder_select="audio_frame_queue"
2930 alac_at_encoder_deps="audiotoolbox"
2931 alac_at_encoder_select="audio_frame_queue"
2932 ilbc_at_encoder_deps="audiotoolbox"
2933 ilbc_at_encoder_select="audio_frame_queue"
2934 pcm_alaw_at_encoder_deps="audiotoolbox"
2935 pcm_alaw_at_encoder_select="audio_frame_queue"
2936 pcm_mulaw_at_encoder_deps="audiotoolbox"
2937 pcm_mulaw_at_encoder_select="audio_frame_queue"
2938 chromaprint_muxer_deps="chromaprint"
2939 h264_videotoolbox_encoder_deps="pthreads"
2940 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2941 libcelt_decoder_deps="libcelt"
2942 libfdk_aac_decoder_deps="libfdk_aac"
2943 libfdk_aac_encoder_deps="libfdk_aac"
2944 libfdk_aac_encoder_select="audio_frame_queue"
2945 libgme_demuxer_deps="libgme"
2946 libgsm_decoder_deps="libgsm"
2947 libgsm_encoder_deps="libgsm"
2948 libgsm_ms_decoder_deps="libgsm"
2949 libgsm_ms_encoder_deps="libgsm"
2950 libilbc_decoder_deps="libilbc"
2951 libilbc_encoder_deps="libilbc"
2952 libkvazaar_encoder_deps="libkvazaar"
2953 libmodplug_demuxer_deps="libmodplug"
2954 libmp3lame_encoder_deps="libmp3lame"
2955 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2956 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2957 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2958 libopencore_amrnb_encoder_select="audio_frame_queue"
2959 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2960 libopenh264_decoder_deps="libopenh264"
2961 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2962 libopenh264_encoder_deps="libopenh264"
2963 libopenjpeg_decoder_deps="libopenjpeg"
2964 libopenjpeg_encoder_deps="libopenjpeg"
2965 libopenmpt_demuxer_deps="libopenmpt"
2966 libopus_decoder_deps="libopus"
2967 libopus_encoder_deps="libopus"
2968 libopus_encoder_select="audio_frame_queue"
2969 librsvg_decoder_deps="librsvg"
2970 libshine_encoder_deps="libshine"
2971 libshine_encoder_select="audio_frame_queue"
2972 libspeex_decoder_deps="libspeex"
2973 libspeex_encoder_deps="libspeex"
2974 libspeex_encoder_select="audio_frame_queue"
2975 libtheora_encoder_deps="libtheora"
2976 libtwolame_encoder_deps="libtwolame"
2977 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2978 libvorbis_decoder_deps="libvorbis"
2979 libvorbis_encoder_deps="libvorbis"
2980 libvorbis_encoder_select="audio_frame_queue"
2981 libvpx_vp8_decoder_deps="libvpx"
2982 libvpx_vp8_encoder_deps="libvpx"
2983 libvpx_vp9_decoder_deps="libvpx"
2984 libvpx_vp9_encoder_deps="libvpx"
2985 libwavpack_encoder_deps="libwavpack"
2986 libwavpack_encoder_select="audio_frame_queue"
2987 libwebp_encoder_deps="libwebp"
2988 libwebp_anim_encoder_deps="libwebp"
2989 libx262_encoder_deps="libx262"
2990 libx264_encoder_deps="libx264"
2991 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2992 libx264rgb_encoder_select="libx264_encoder"
2993 libx265_encoder_deps="libx265"
2994 libxavs_encoder_deps="libxavs"
2995 libxvid_encoder_deps="libxvid"
2996 libzvbi_teletext_decoder_deps="libzvbi"
2997 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2998 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2999 videotoolbox_encoder_suggest="vda_framework"
3000
3001 # demuxers / muxers
3002 ac3_demuxer_select="ac3_parser"
3003 aiff_muxer_select="iso_media"
3004 asf_demuxer_select="riffdec"
3005 asf_o_demuxer_select="riffdec"
3006 asf_muxer_select="riffenc"
3007 asf_stream_muxer_select="asf_muxer"
3008 avi_demuxer_select="iso_media riffdec exif"
3009 avi_muxer_select="riffenc"
3010 caf_demuxer_select="iso_media riffdec"
3011 caf_muxer_select="iso_media"
3012 dash_muxer_select="mp4_muxer"
3013 dash_demuxer_deps="libxml2"
3014 dirac_demuxer_select="dirac_parser"
3015 dts_demuxer_select="dca_parser"
3016 dtshd_demuxer_select="dca_parser"
3017 dv_demuxer_select="dvprofile"
3018 dv_muxer_select="dvprofile"
3019 dxa_demuxer_select="riffdec"
3020 eac3_demuxer_select="ac3_parser"
3021 f4v_muxer_select="mov_muxer"
3022 fifo_muxer_deps="threads"
3023 flac_demuxer_select="flac_parser"
3024 hds_muxer_select="flv_muxer"
3025 hls_muxer_select="mpegts_muxer"
3026 image2_alias_pix_demuxer_select="image2_demuxer"
3027 image2_brender_pix_demuxer_select="image2_demuxer"
3028 ipod_muxer_select="mov_muxer"
3029 ismv_muxer_select="mov_muxer"
3030 matroska_audio_muxer_select="matroska_muxer"
3031 matroska_demuxer_select="iso_media riffdec"
3032 matroska_demuxer_suggest="bzlib lzo zlib"
3033 matroska_muxer_select="iso_media riffenc"
3034 mmf_muxer_select="riffenc"
3035 mov_demuxer_select="iso_media riffdec"
3036 mov_demuxer_suggest="zlib"
3037 mov_muxer_select="iso_media riffenc rtpenc_chain"
3038 mp3_demuxer_select="mpegaudio_parser"
3039 mp3_muxer_select="mpegaudioheader"
3040 mp4_muxer_select="mov_muxer"
3041 mpegts_demuxer_select="iso_media"
3042 mpegts_muxer_select="adts_muxer latm_muxer"
3043 mpegtsraw_demuxer_select="mpegts_demuxer"
3044 mxf_d10_muxer_select="mxf_muxer"
3045 mxf_opatom_muxer_select="mxf_muxer"
3046 nut_muxer_select="riffenc"
3047 nuv_demuxer_select="riffdec"
3048 oga_muxer_select="ogg_muxer"
3049 ogg_demuxer_select="dirac_parse"
3050 ogv_muxer_select="ogg_muxer"
3051 opus_muxer_select="ogg_muxer"
3052 psp_muxer_select="mov_muxer"
3053 rtp_demuxer_select="sdp_demuxer"
3054 rtp_muxer_select="golomb"
3055 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3056 rtsp_demuxer_select="http_protocol rtpdec"
3057 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3058 sap_demuxer_select="sdp_demuxer"
3059 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3060 sdp_demuxer_select="rtpdec"
3061 smoothstreaming_muxer_select="ismv_muxer"
3062 spdif_muxer_select="aac_parser"
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 pthreads"
3084 avfoundation_indev_extralibs="-framework Foundation -framework CoreVideo -framework CoreMedia"
3085 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3086 caca_outdev_deps="libcaca"
3087 decklink_indev_deps="decklink threads libdl"
3088 decklink_indev_extralibs="-lstdc++"
3089 decklink_outdev_deps="decklink threads libdl"
3090 decklink_outdev_extralibs="-lstdc++"
3091 libndi_newtek_indev_deps="libndi_newtek libdl"
3092 libndi_newtek_indev_extralibs="-lndi"
3093 libndi_newtek_outdev_deps="libndi_newtek libdl"
3094 libndi_newtek_outdev_extralibs="-lndi"
3095 dshow_indev_deps="IBaseFilter"
3096 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3097 fbdev_indev_deps="linux_fb_h"
3098 fbdev_outdev_deps="linux_fb_h"
3099 gdigrab_indev_deps="CreateDIBSection"
3100 gdigrab_indev_extralibs="-lgdi32"
3101 gdigrab_indev_select="bmp_decoder"
3102 iec61883_indev_deps="libiec61883"
3103 jack_indev_deps="jack"
3104 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3105 kmsgrab_indev_deps="libdrm"
3106 lavfi_indev_deps="avfilter"
3107 libcdio_indev_deps="libcdio"
3108 libdc1394_indev_deps="libdc1394"
3109 libv4l2_indev_deps="libv4l2"
3110 openal_indev_deps="openal"
3111 opengl_outdev_deps="opengl"
3112 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3113 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3114 pulse_indev_deps="libpulse"
3115 pulse_outdev_deps="libpulse"
3116 sdl2_outdev_deps="sdl2"
3117 sndio_indev_deps="sndio"
3118 sndio_outdev_deps="sndio"
3119 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3120 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3121 vfwcap_indev_deps="vfw32 vfwcap_defines"
3122 xcbgrab_indev_deps="libxcb"
3123 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3124 xv_outdev_extralibs="-lXv -lX11 -lXext"
3125
3126 # protocols
3127 async_protocol_deps="threads"
3128 bluray_protocol_deps="libbluray"
3129 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3130 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3131 ffrtmpcrypt_protocol_select="tcp_protocol"
3132 ffrtmphttp_protocol_conflict="librtmp_protocol"
3133 ffrtmphttp_protocol_select="http_protocol"
3134 ftp_protocol_select="tcp_protocol"
3135 gopher_protocol_select="network"
3136 http_protocol_select="tcp_protocol"
3137 httpproxy_protocol_select="tcp_protocol"
3138 https_protocol_select="tls_protocol"
3139 icecast_protocol_select="http_protocol"
3140 librtmp_protocol_deps="librtmp"
3141 librtmpe_protocol_deps="librtmp"
3142 librtmps_protocol_deps="librtmp"
3143 librtmpt_protocol_deps="librtmp"
3144 librtmpte_protocol_deps="librtmp"
3145 libsmbclient_protocol_deps="libsmbclient gplv3"
3146 libssh_protocol_deps="libssh"
3147 mmsh_protocol_select="http_protocol"
3148 mmst_protocol_select="network"
3149 rtmp_protocol_conflict="librtmp_protocol"
3150 rtmp_protocol_select="tcp_protocol"
3151 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3152 rtmps_protocol_conflict="librtmp_protocol"
3153 rtmps_protocol_select="tls_protocol"
3154 rtmpt_protocol_select="ffrtmphttp_protocol"
3155 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3156 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3157 rtp_protocol_select="udp_protocol"
3158 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3159 sctp_protocol_select="network"
3160 srtp_protocol_select="rtp_protocol srtp"
3161 tcp_protocol_select="network"
3162 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3163 tls_gnutls_protocol_deps="gnutls"
3164 tls_gnutls_protocol_select="tcp_protocol"
3165 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3166 tls_openssl_protocol_deps="openssl"
3167 tls_openssl_protocol_select="tcp_protocol"
3168 tls_schannel_protocol_deps="schannel"
3169 tls_schannel_protocol_select="tcp_protocol"
3170 tls_securetransport_protocol_deps="securetransport"
3171 tls_securetransport_protocol_select="tcp_protocol"
3172 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3173 udp_protocol_select="network"
3174 udplite_protocol_select="network"
3175 unix_protocol_deps="sys_un_h"
3176 unix_protocol_select="network"
3177
3178 # filters
3179 afftfilt_filter_deps="avcodec"
3180 afftfilt_filter_select="fft"
3181 afir_filter_deps="avcodec"
3182 afir_filter_select="fft"
3183 amovie_filter_deps="avcodec avformat"
3184 aresample_filter_deps="swresample"
3185 ass_filter_deps="libass"
3186 atempo_filter_deps="avcodec"
3187 atempo_filter_select="rdft"
3188 azmq_filter_deps="libzmq"
3189 blackframe_filter_deps="gpl"
3190 boxblur_filter_deps="gpl"
3191 bs2b_filter_deps="libbs2b"
3192 colormatrix_filter_deps="gpl"
3193 coreimage_filter_deps="coreimage appkit"
3194 coreimage_filter_extralibs="-framework OpenGL"
3195 coreimagesrc_filter_deps="coreimage appkit"
3196 coreimagesrc_filter_extralibs="-framework OpenGL"
3197 cover_rect_filter_deps="avcodec avformat gpl"
3198 cropdetect_filter_deps="gpl"
3199 deinterlace_qsv_filter_deps="libmfx"
3200 deinterlace_vaapi_filter_deps="vaapi"
3201 delogo_filter_deps="gpl"
3202 deshake_filter_select="pixelutils"
3203 drawtext_filter_deps="libfreetype"
3204 elbg_filter_deps="avcodec"
3205 eq_filter_deps="gpl"
3206 fftfilt_filter_deps="avcodec"
3207 fftfilt_filter_select="rdft"
3208 find_rect_filter_deps="avcodec avformat gpl"
3209 firequalizer_filter_deps="avcodec"
3210 firequalizer_filter_select="rdft"
3211 flite_filter_deps="libflite"
3212 framerate_filter_select="pixelutils"
3213 frei0r_filter_deps="frei0r libdl"
3214 frei0r_src_filter_deps="frei0r libdl"
3215 fspp_filter_deps="gpl"
3216 geq_filter_deps="gpl"
3217 histeq_filter_deps="gpl"
3218 hqdn3d_filter_deps="gpl"
3219 interlace_filter_deps="gpl"
3220 kerndeint_filter_deps="gpl"
3221 ladspa_filter_deps="ladspa libdl"
3222 mcdeint_filter_deps="avcodec gpl"
3223 movie_filter_deps="avcodec avformat"
3224 mpdecimate_filter_deps="gpl"
3225 mpdecimate_filter_select="pixelutils"
3226 mptestsrc_filter_deps="gpl"
3227 negate_filter_deps="lut_filter"
3228 nnedi_filter_deps="gpl"
3229 ocr_filter_deps="libtesseract"
3230 ocv_filter_deps="libopencv"
3231 owdenoise_filter_deps="gpl"
3232 pan_filter_deps="swresample"
3233 perspective_filter_deps="gpl"
3234 phase_filter_deps="gpl"
3235 pp7_filter_deps="gpl"
3236 pp_filter_deps="gpl postproc"
3237 pullup_filter_deps="gpl"
3238 removelogo_filter_deps="avcodec avformat swscale"
3239 repeatfields_filter_deps="gpl"
3240 resample_filter_deps="avresample"
3241 rubberband_filter_deps="librubberband"
3242 sab_filter_deps="gpl swscale"
3243 scale2ref_filter_deps="swscale"
3244 scale_filter_deps="swscale"
3245 scale_qsv_filter_deps="libmfx"
3246 select_filter_select="pixelutils"
3247 showcqt_filter_deps="avcodec avformat swscale"
3248 showcqt_filter_select="fft"
3249 showfreqs_filter_deps="avcodec"
3250 showfreqs_filter_select="fft"
3251 showspectrum_filter_deps="avcodec"
3252 showspectrum_filter_select="fft"
3253 showspectrumpic_filter_deps="avcodec"
3254 showspectrumpic_filter_select="fft"
3255 signature_filter_deps="gpl avcodec avformat"
3256 smartblur_filter_deps="gpl swscale"
3257 sofalizer_filter_deps="libmysofa avcodec"
3258 sofalizer_filter_select="fft"
3259 spectrumsynth_filter_deps="avcodec"
3260 spectrumsynth_filter_select="fft"
3261 spp_filter_deps="gpl avcodec"
3262 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3263 stereo3d_filter_deps="gpl"
3264 subtitles_filter_deps="avformat avcodec libass"
3265 super2xsai_filter_deps="gpl"
3266 pixfmts_super2xsai_test_deps="super2xsai_filter"
3267 tinterlace_filter_deps="gpl"
3268 tinterlace_merge_test_deps="tinterlace_filter"
3269 tinterlace_pad_test_deps="tinterlace_filter"
3270 tonemap_filter_deps="const_nan"
3271 uspp_filter_deps="gpl avcodec"
3272 vaguedenoiser_filter_deps="gpl"
3273 vidstabdetect_filter_deps="libvidstab"
3274 vidstabtransform_filter_deps="libvidstab"
3275 libvmaf_filter_deps="libvmaf"
3276 zmq_filter_deps="libzmq"
3277 zoompan_filter_deps="swscale"
3278 zscale_filter_deps="libzimg const_nan"
3279 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3280
3281 # examples
3282 avio_dir_cmd_deps="avformat avutil"
3283 avio_reading_deps="avformat avcodec avutil"
3284 decode_audio_example_deps="avcodec avutil"
3285 decode_video_example_deps="avcodec avutil"
3286 demuxing_decoding_example_deps="avcodec avformat avutil"
3287 encode_audio_example_deps="avcodec avutil"
3288 encode_video_example_deps="avcodec avutil"
3289 extract_mvs_example_deps="avcodec avformat avutil"
3290 filter_audio_example_deps="avfilter avutil"
3291 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3292 filtering_video_example_deps="avfilter avcodec avformat avutil"
3293 http_multiclient_example_deps="avformat avutil fork"
3294 hw_decode_example_deps="avcodec avformat avutil"
3295 metadata_example_deps="avformat avutil"
3296 muxing_example_deps="avcodec avformat avutil swscale"
3297 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3298 remuxing_example_deps="avcodec avformat avutil"
3299 resampling_audio_example_deps="avutil swresample"
3300 scaling_video_example_deps="avutil swscale"
3301 transcode_aac_example_deps="avcodec avformat swresample"
3302 transcoding_example_deps="avfilter avcodec avformat avutil"
3303
3304 # libraries, in linking order
3305 avcodec_deps="avutil"
3306 avcodec_select="null_bsf"
3307 avdevice_deps="avformat avcodec avutil"
3308 avfilter_deps="avutil"
3309 avformat_deps="avcodec avutil"
3310 avformat_suggest="network"
3311 avresample_deps="avutil"
3312 postproc_deps="avutil gpl"
3313 swresample_deps="avutil"
3314 swscale_deps="avutil"
3315
3316 # programs
3317 ffmpeg_deps="avcodec avfilter avformat swresample"
3318 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3319                null_filter
3320                trim_filter"
3321 ffplay_deps="avcodec avformat swscale swresample sdl2"
3322 ffplay_extralibs='$sdl2_extralibs'
3323 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3324 ffprobe_deps="avcodec avformat"
3325 ffserver_deps="avformat fork sarestart"
3326 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3327
3328 # documentation
3329 podpages_deps="perl"
3330 manpages_deps="perl pod2man"
3331 htmlpages_deps="perl"
3332 htmlpages_deps_any="makeinfo_html texi2html"
3333 txtpages_deps="perl makeinfo"
3334 doc_deps_any="manpages htmlpages podpages txtpages"
3335
3336 # default parameters
3337
3338 logfile="ffbuild/config.log"
3339
3340 # installation paths
3341 prefix_default="/usr/local"
3342 bindir_default='${prefix}/bin'
3343 datadir_default='${prefix}/share/ffmpeg'
3344 docdir_default='${prefix}/share/doc/ffmpeg'
3345 incdir_default='${prefix}/include'
3346 libdir_default='${prefix}/lib'
3347 mandir_default='${prefix}/share/man'
3348
3349 # toolchain
3350 ar_default="ar"
3351 cc_default="gcc"
3352 cxx_default="g++"
3353 host_cc_default="gcc"
3354 doxygen_default="doxygen"
3355 install="install"
3356 ln_s_default="ln -s -f"
3357 nm_default="nm -g"
3358 pkg_config_default=pkg-config
3359 ranlib_default="ranlib"
3360 strip_default="strip"
3361 version_script='--version-script'
3362 x86asmexe_default="nasm"
3363 windres_default="windres"
3364 nvcc_default="nvcc"
3365 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3366 striptype="direct"
3367
3368 # OS
3369 target_os_default=$(tolower $(uname -s))
3370 host_os=$target_os_default
3371
3372 # machine
3373 if test "$target_os_default" = aix; then
3374     arch_default=$(uname -p)
3375     strip_default="strip -X32_64"
3376 else
3377     arch_default=$(uname -m)
3378 fi
3379 cpu="generic"
3380 intrinsics="none"
3381
3382 # configurable options
3383 enable $PROGRAM_LIST
3384 enable $DOCUMENT_LIST
3385 enable $EXAMPLE_LIST
3386 enable $(filter_out avresample $LIBRARY_LIST)
3387 enable stripping
3388
3389 enable asm
3390 enable debug
3391 enable doc
3392 enable faan faandct faanidct
3393 enable optimizations
3394 enable runtime_cpudetect
3395 enable safe_bitstream_reader
3396 enable static
3397 enable swscale_alpha
3398 enable valgrind_backtrace
3399
3400 sws_max_filter_size_default=256
3401 set_default sws_max_filter_size
3402
3403 # build settings
3404 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3405 LIBPREF="lib"
3406 LIBSUF=".a"
3407 FULLNAME='$(NAME)$(BUILDSUF)'
3408 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3409 SLIBPREF="lib"
3410 SLIBSUF=".so"
3411 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3412 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3413 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3414 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3415 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3416 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3417 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3418
3419 asflags_filter=echo
3420 cflags_filter=echo
3421 ldflags_filter=echo
3422
3423 AS_C='-c'
3424 AS_O='-o $@'
3425 CC_C='-c'
3426 CC_E='-E -o $@'
3427 CC_O='-o $@'
3428 CXX_C='-c'
3429 CXX_O='-o $@'
3430 OBJCC_C='-c'
3431 OBJCC_E='-E -o $@'
3432 OBJCC_O='-o $@'
3433 X86ASM_O='-o $@'
3434 LD_O='-o $@'
3435 LD_LIB='-l%'
3436 LD_PATH='-L'
3437 HOSTCC_C='-c'
3438 HOSTCC_E='-E -o $@'
3439 HOSTCC_O='-o $@'
3440 HOSTLD_O='-o $@'
3441 NVCC_C='-c'
3442 NVCC_O='-o $@'
3443
3444 host_extralibs='-lm'
3445 host_cflags_filter=echo
3446 host_ldflags_filter=echo
3447
3448 target_path='$(CURDIR)'
3449
3450 # since the object filename is not given with the -MM flag, the compiler
3451 # is only able to print the basename, and we must add the path ourselves
3452 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3453 DEPFLAGS='-MM'
3454
3455 mkdir -p ffbuild
3456
3457 # find source path
3458 if test -f configure; then
3459     source_path=.
3460 else
3461     source_path=$(cd $(dirname "$0"); pwd)
3462     case "$source_path" in
3463         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3464     esac
3465     test -e "$source_path/config.h" &&
3466         die "Out of tree builds are impossible with config.h in source dir."
3467 fi
3468
3469 for v in "$@"; do
3470     r=${v#*=}
3471     l=${v%"$r"}
3472     r=$(sh_quote "$r")
3473     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3474 done
3475
3476 find_things(){
3477     thing=$1
3478     pattern=$2
3479     file=$source_path/$3
3480     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3481 }
3482
3483 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3484 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3485 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3486 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3487 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3488 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3489 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3490 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3491 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3492
3493 find_things_extern(){
3494     thing=$1
3495     pattern=$2
3496     file=$source_path/$3
3497     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3498 }
3499
3500 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3501 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3502
3503 ALL_COMPONENTS="
3504     $BSF_LIST
3505     $DECODER_LIST
3506     $DEMUXER_LIST
3507     $ENCODER_LIST
3508     $FILTER_LIST
3509     $HWACCEL_LIST
3510     $INDEV_LIST
3511     $MUXER_LIST
3512     $OUTDEV_LIST
3513     $PARSER_LIST
3514     $PROTOCOL_LIST
3515 "
3516
3517 for n in $COMPONENT_LIST; do
3518     v=$(toupper ${n%s})_LIST
3519     eval enable \$$v
3520     eval ${n}_if_any="\$$v"
3521 done
3522
3523 enable $ARCH_EXT_LIST
3524
3525 die_unknown(){
3526     echo "Unknown option \"$1\"."
3527     echo "See $0 --help for available options."
3528     exit 1
3529 }
3530
3531 print_in_columns() {
3532     cols=$(expr $ncols / 24)
3533     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3534 }
3535
3536 show_list() {
3537     suffix=_$1
3538     shift
3539     echo $* | sed s/$suffix//g | print_in_columns
3540     exit 0
3541 }
3542
3543 rand_list(){
3544     IFS=', '
3545     set -- $*
3546     unset IFS
3547     for thing; do
3548         comp=${thing%:*}
3549         prob=${thing#$comp}
3550         prob=${prob#:}
3551         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3552         echo "prob ${prob:-0.5}"
3553         printf '%s\n' $comp
3554     done
3555 }
3556
3557 do_random(){
3558     action=$1
3559     shift
3560     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3561     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3562 }
3563
3564 for opt do
3565     optval="${opt#*=}"
3566     case "$opt" in
3567         --extra-ldflags=*)
3568             add_ldflags $optval
3569         ;;
3570         --extra-ldexeflags=*)
3571             add_ldexeflags $optval
3572         ;;
3573         --extra-ldlibflags=*)
3574             add_ldlibflags $optval
3575         ;;
3576         --extra-libs=*)
3577             add_extralibs $optval
3578         ;;
3579         --disable-devices)
3580             disable $INDEV_LIST $OUTDEV_LIST
3581         ;;
3582         --enable-debug=*)
3583             debuglevel="$optval"
3584         ;;
3585         --disable-programs)
3586             disable $PROGRAM_LIST
3587         ;;
3588         --disable-everything)
3589             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3590         ;;
3591         --disable-all)
3592             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3593             disable $LIBRARY_LIST $PROGRAM_LIST doc
3594             enable avutil
3595         ;;
3596         --enable-random|--disable-random)
3597             action=${opt%%-random}
3598             do_random ${action#--} $COMPONENT_LIST
3599         ;;
3600         --enable-random=*|--disable-random=*)
3601             action=${opt%%-random=*}
3602             do_random ${action#--} $optval
3603         ;;
3604         --enable-sdl)
3605             enable sdl2
3606         ;;
3607         --enable-*=*|--disable-*=*)
3608             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3609             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3610             eval list=\$$(toupper $thing)_LIST
3611             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3612             list=$(filter "$name" $list)
3613             [ "$list" = "" ] && warn "Option $opt did not match anything"
3614             $action $list
3615         ;;
3616         --enable-yasm|--disable-yasm)
3617             warn "The ${opt} option is only provided for compatibility and will be\n"\
3618                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3619             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3620         ;;
3621         --yasmexe=*)
3622             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3623                  "removed in the future. Use --x86asmexe instead."
3624             x86asmexe="$optval"
3625         ;;
3626         --enable-?*|--disable-?*)
3627             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3628             if is_in $option $COMPONENT_LIST; then
3629                 test $action = disable && action=unset
3630                 eval $action \$$(toupper ${option%s})_LIST
3631             elif is_in $option $CMDLINE_SELECT; then
3632                 $action $option
3633             else
3634                 die_unknown $opt
3635             fi
3636         ;;
3637         --list-*)
3638             NAME="${opt#--list-}"
3639             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3640             NAME=${NAME%s}
3641             eval show_list $NAME \$$(toupper $NAME)_LIST
3642         ;;
3643         --help|-h) show_help
3644         ;;
3645         --quiet|-q) quiet=yes
3646         ;;
3647         --fatal-warnings) enable fatal_warnings
3648         ;;
3649         --libfuzzer=*)
3650             libfuzzer_path="$optval"
3651         ;;
3652         *)
3653             optname="${opt%%=*}"
3654             optname="${optname#--}"
3655             optname=$(echo "$optname" | sed 's/-/_/g')
3656             if is_in $optname $CMDLINE_SET; then
3657                 eval $optname='$optval'
3658             elif is_in $optname $CMDLINE_APPEND; then
3659                 append $optname "$optval"
3660             else
3661                 die_unknown $opt
3662             fi
3663         ;;
3664     esac
3665 done
3666
3667 for e in $env; do
3668     eval "export $e"
3669 done
3670
3671 if disabled autodetect; then
3672
3673     # Unless iconv is explicitely disabled by the user, we still want to probe
3674     # for the iconv from the libc.
3675     disabled iconv || enable libc_iconv
3676
3677     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3678     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3679 fi
3680 # Mark specifically enabled, but normally autodetected libraries as requested.
3681 for lib in $AUTODETECT_LIBS; do
3682     enabled $lib && request $lib
3683 done
3684 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3685 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3686 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3687
3688 disabled logging && logfile=/dev/null
3689
3690 die_license_disabled() {
3691     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3692 }
3693
3694 die_license_disabled_gpl() {
3695     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3696 }
3697
3698 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3699 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3700
3701 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3702 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3703
3704 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3705
3706 # Disable all the library-specific components if the library itself
3707 # is disabled, see AVCODEC_LIST and following _LIST variables.
3708
3709 disable_components(){
3710     disabled ${1} && disable $(
3711         eval components="\$$(toupper ${1})_COMPONENTS"
3712         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3713     )
3714 }
3715
3716 map 'disable_components $v' $LIBRARY_LIST
3717
3718 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3719 set >> $logfile
3720
3721 test -n "$valgrind" && toolchain="valgrind-memcheck"
3722
3723 enabled ossfuzz && {
3724     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3725     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3726 }
3727
3728 case "$toolchain" in
3729     *-asan)
3730         cc_default="${toolchain%-asan}"
3731         add_cflags  -fsanitize=address
3732         add_ldflags -fsanitize=address
3733     ;;
3734     *-msan)
3735         cc_default="${toolchain%-msan}"
3736         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3737         add_ldflags -fsanitize=memory
3738     ;;
3739     *-tsan)
3740         cc_default="${toolchain%-tsan}"
3741         add_cflags  -fsanitize=thread -fPIE
3742         add_ldflags -fsanitize=thread -pie
3743         case "$toolchain" in
3744             gcc-tsan)
3745                 add_cflags  -fPIC
3746                 add_ldflags -fPIC
3747                 ;;
3748         esac
3749     ;;
3750     *-usan)
3751         cc_default="${toolchain%-usan}"
3752         add_cflags  -fsanitize=undefined
3753         add_ldflags -fsanitize=undefined
3754     ;;
3755     valgrind-*)
3756         target_exec_default="valgrind"
3757         case "$toolchain" in
3758             valgrind-massif)
3759                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3760                 ;;
3761             valgrind-memcheck)
3762                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3763                 ;;
3764         esac
3765     ;;
3766     msvc)
3767         # Check whether the current MSVC version needs the C99 converter.
3768         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3769         # support enough of C99 to build ffmpeg. Default to the new
3770         # behaviour if the regexp was unable to match anything, since this
3771         # successfully parses the version number of existing supported
3772         # versions that require the converter (MSVC 2010 and 2012).
3773         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3774         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3775             cc_default="cl"
3776             cxx_default="cl"
3777         else
3778             cc_default="c99wrap cl"
3779             cxx_default="c99wrap cl"
3780         fi
3781         ld_default="$source_path/compat/windows/mslink"
3782         nm_default="dumpbin -symbols"
3783         ar_default="lib"
3784         case "$arch" in
3785         arm*)
3786             as_default="armasm"
3787             ;;
3788         esac
3789         target_os_default="win32"
3790         # Use a relative path for TMPDIR. This makes sure all the
3791         # ffconf temp files are written with a relative path, avoiding
3792         # issues with msys/win32 path conversion for MSVC parameters
3793         # such as -Fo<file> or -out:<file>.
3794         TMPDIR=.
3795     ;;
3796     icl)
3797         cc_default="icl"
3798         ld_default="xilink"
3799         nm_default="dumpbin -symbols"
3800         ar_default="xilib"
3801         target_os_default="win32"
3802         TMPDIR=.
3803     ;;
3804     gcov)
3805         add_cflags  -fprofile-arcs -ftest-coverage
3806         add_ldflags -fprofile-arcs -ftest-coverage
3807     ;;
3808     llvm-cov)
3809         add_cflags -fprofile-arcs -ftest-coverage
3810         add_ldflags --coverage
3811     ;;
3812     hardened)
3813         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3814         add_cflags   -fno-strict-overflow -fstack-protector-all
3815         add_ldflags  -Wl,-z,relro -Wl,-z,now
3816         add_cflags   -fPIE
3817         add_ldexeflags -fPIE -pie
3818     ;;
3819     ?*)
3820         die "Unknown toolchain $toolchain"
3821     ;;
3822 esac
3823
3824 test -n "$cross_prefix" && enable cross_compile
3825
3826 if enabled cross_compile; then
3827     test -n "$arch" && test -n "$target_os" ||
3828         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3829 fi
3830
3831 ar_default="${cross_prefix}${ar_default}"
3832 cc_default="${cross_prefix}${cc_default}"
3833 cxx_default="${cross_prefix}${cxx_default}"
3834 nm_default="${cross_prefix}${nm_default}"
3835 pkg_config_default="${cross_prefix}${pkg_config_default}"
3836 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3837     ranlib_default="${cross_prefix}${ranlib_default} -D"
3838 else
3839     ranlib_default="${cross_prefix}${ranlib_default}"
3840 fi
3841 strip_default="${cross_prefix}${strip_default}"
3842 windres_default="${cross_prefix}${windres_default}"
3843
3844 sysinclude_default="${sysroot}/usr/include"
3845
3846 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3847     target_exec target_os x86asmexe nvcc
3848 enabled cross_compile || host_cc_default=$cc
3849 set_default host_cc
3850
3851 pkg_config_fail_message=""
3852 if ! $pkg_config --version >/dev/null 2>&1; then
3853     warn "$pkg_config not found, library detection may fail."
3854     pkg_config=false
3855 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3856     pkg_config_fail_message="
3857 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3858 fi
3859
3860 if test $doxygen != $doxygen_default && \
3861   ! $doxygen --version >/dev/null 2>&1; then
3862     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3863 fi
3864
3865 exesuf() {
3866     case $1 in
3867         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3868     esac
3869 }
3870
3871 EXESUF=$(exesuf $target_os)
3872 HOSTEXESUF=$(exesuf $host_os)
3873
3874 # set temporary file name
3875 : ${TMPDIR:=$TEMPDIR}
3876 : ${TMPDIR:=$TMP}
3877 : ${TMPDIR:=/tmp}
3878
3879 if [ -n "$tempprefix" ] ; then
3880     mktemp(){
3881         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3882         echo "$tmpname"
3883         mkdir "$tmpname"
3884     }
3885 elif ! check_cmd mktemp -u XXXXXX; then
3886     # simple replacement for missing mktemp
3887     # NOT SAFE FOR GENERAL USE
3888     mktemp(){
3889         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3890         echo "$tmpname"
3891         mkdir "$tmpname"
3892     }
3893 fi
3894
3895 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3896     die "Unable to create temporary directory in $TMPDIR."
3897
3898 tmpfile(){
3899     tmp="${FFTMPDIR}/test"$2
3900     (set -C; exec > $tmp) 2> /dev/null ||
3901         die "Unable to create temporary file in $FFTMPDIR."
3902     eval $1=$tmp
3903 }
3904
3905 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3906 trap 'exit 2' INT
3907
3908 tmpfile TMPASM .asm
3909 tmpfile TMPC   .c
3910 tmpfile TMPCPP .cpp
3911 tmpfile TMPE   $EXESUF
3912 tmpfile TMPH   .h
3913 tmpfile TMPM   .m
3914 tmpfile TMPO   .o
3915 tmpfile TMPS   .S
3916 tmpfile TMPSH  .sh
3917 tmpfile TMPV   .ver
3918
3919 unset -f mktemp
3920
3921 chmod +x $TMPE
3922
3923 # make sure we can execute files in $TMPDIR
3924 cat > $TMPSH 2>> $logfile <<EOF
3925 #! /bin/sh
3926 EOF
3927 chmod +x $TMPSH >> $logfile 2>&1
3928 if ! $TMPSH >> $logfile 2>&1; then
3929     cat <<EOF
3930 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3931 variable to another directory and make sure that it is not mounted noexec.
3932 EOF
3933     die "Sanity test failed."
3934 fi
3935
3936 armasm_flags(){
3937     for flag; do
3938         case $flag in
3939             # Filter out MSVC cl.exe options from cflags that shouldn't
3940             # be passed to gas-preprocessor
3941             -M[TD]*)                                            ;;
3942             *)                  echo $flag                      ;;
3943         esac
3944    done
3945 }
3946
3947 ccc_flags(){
3948     for flag; do
3949         case $flag in
3950             -std=c99)           echo -c99                       ;;
3951             -mcpu=*)            echo -arch ${flag#*=}           ;;
3952             -mieee)             echo -ieee                      ;;
3953             -O*|-fast)          echo $flag                      ;;
3954             -fno-math-errno)    echo -assume nomath_errno       ;;
3955             -g)                 echo -g3                        ;;
3956             -Wall)              echo -msg_enable level2         ;;
3957             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3958             -Wl,*)              echo $flag                      ;;
3959             -f*|-W*)                                            ;;
3960             *)                  echo $flag                      ;;
3961         esac
3962    done
3963 }
3964
3965 cparser_flags(){
3966     for flag; do
3967         case $flag in
3968             -Wno-switch)             echo -Wno-switch-enum ;;
3969             -Wno-format-zero-length) ;;
3970             -Wdisabled-optimization) ;;
3971             -Wno-pointer-sign)       echo -Wno-other ;;
3972             *)                       echo $flag ;;
3973         esac
3974     done
3975 }
3976
3977 msvc_common_flags(){
3978     for flag; do
3979         case $flag in
3980             # In addition to specifying certain flags under the compiler
3981             # specific filters, they must be specified here as well or else the
3982             # generic catch all at the bottom will print the original flag.
3983             -Wall)                ;;
3984             -Wextra)              ;;
3985             -std=c99)             ;;
3986             # Common flags
3987             -fomit-frame-pointer) ;;
3988             -g)                   echo -Z7 ;;
3989             -fno-math-errno)      ;;
3990             -fno-common)          ;;
3991             -fno-signed-zeros)    ;;
3992             -fPIC)                ;;
3993             -mthumb)              ;;
3994             -march=*)             ;;
3995             -lz)                  echo zlib.lib ;;
3996             -lx264)               echo libx264.lib ;;
3997             -lstdc++)             ;;
3998             -l*)                  echo ${flag#-l}.lib ;;
3999             -LARGEADDRESSAWARE)   echo $flag ;;
4000             -L*)                  echo -libpath:${flag#-L} ;;
4001             *)                    echo $flag ;;
4002         esac
4003     done
4004 }
4005
4006 msvc_flags(){
4007     msvc_common_flags "$@"
4008     for flag; do
4009         case $flag in
4010             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4011                                        -wd4554 ;;
4012             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4013                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4014                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4015                                        -wd4307 \
4016                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4017         esac
4018     done
4019 }
4020
4021 icl_flags(){
4022     msvc_common_flags "$@"
4023     for flag; do
4024         case $flag in
4025             # Despite what Intel's documentation says -Wall, which is supported
4026             # on Windows, does enable remarks so disable them here.
4027             -Wall)                echo $flag -Qdiag-disable:remark ;;
4028             -std=c99)             echo -Qstd=c99 ;;
4029             -flto)                echo -ipo ;;
4030         esac
4031     done
4032 }
4033
4034 icc_flags(){
4035     for flag; do
4036         case $flag in
4037             -flto)                echo -ipo ;;
4038             *)                    echo $flag ;;
4039         esac
4040     done
4041 }
4042
4043 pgi_flags(){
4044     for flag; do
4045         case $flag in
4046             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4047             -fomit-frame-pointer) echo -Mnoframe ;;
4048             -g)                   echo -gopt ;;
4049             *)                    echo $flag ;;
4050         esac
4051     done
4052 }
4053
4054 suncc_flags(){
4055     for flag; do
4056         case $flag in
4057             -march=*|-mcpu=*)
4058                 case "${flag#*=}" in
4059                     native)                   echo -xtarget=native       ;;
4060                     v9|niagara)               echo -xarch=sparc          ;;
4061                     ultrasparc)               echo -xarch=sparcvis       ;;
4062                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4063                     i586|pentium)             echo -xchip=pentium        ;;
4064                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4065                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4066                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4067                     pentium4*)          echo -xtarget=pentium4           ;;
4068                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4069                     *-sse3)             echo -xarch=sse3                 ;;
4070                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4071                     bonnell)                   echo -xarch=ssse3         ;;
4072                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4073                     westmere)                  echo -xtarget=westmere    ;;
4074                     silvermont)                echo -xarch=sse4_2        ;;
4075                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4076                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4077                                                echo -xarch=avx           ;;
4078                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4079                     btver1)                    echo -xarch=amdsse4a      ;;
4080                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4081                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4082                     k8|opteron|athlon64|athlon-fx)
4083                                                echo -xarch=sse2a         ;;
4084                     athlon*)                   echo -xarch=pentium_proa  ;;
4085                 esac
4086                 ;;
4087             -std=c99)             echo -xc99              ;;
4088             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4089             -fPIC)                echo -KPIC -xcode=pic32 ;;
4090             -W*,*)                echo $flag              ;;
4091             -f*-*|-W*|-mimpure-text)                      ;;
4092             -shared)              echo -G                 ;;
4093             *)                    echo $flag              ;;
4094         esac
4095     done
4096 }
4097
4098 tms470_flags(){
4099     for flag; do
4100         case $flag in
4101             -march=*|-mcpu=*)
4102                 case "${flag#*=}" in
4103                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4104                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4105                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4106                     armv6*|arm11*)          echo -mv=6   ;;
4107                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4108                                             echo -mv=5e  ;;
4109                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4110                 esac
4111                 ;;
4112             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4113             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4114             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4115             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4116             -msoft-float)   echo --float_support=vfplib       ;;
4117             -O[0-3]|-mf=*)  echo $flag                        ;;
4118             -g)             echo -g -mn                       ;;
4119             -pds=*)         echo $flag                        ;;
4120             -D*|-I*)        echo $flag                        ;;
4121             --gcc|--abi=*)  echo $flag                        ;;
4122             -me)            echo $flag                        ;;
4123         esac
4124     done
4125 }
4126
4127 probe_cc(){
4128     pfx=$1
4129     _cc=$2
4130     first=$3
4131
4132     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4133     unset _ld_o _ldflags _ld_lib _ld_path
4134     unset _depflags _DEPCMD _DEPFLAGS
4135     _flags_filter=echo
4136
4137     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4138         true # no-op to avoid reading stdin in following checks
4139     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4140         _type=llvm_gcc
4141         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4142         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4143         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4144         _cflags_speed='-O3'
4145         _cflags_size='-Os'
4146     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4147         _type=gcc
4148         gcc_version=$($_cc --version | head -n1)
4149         gcc_basever=$($_cc -dumpversion)
4150         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4151         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4152         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4153         case $gcc_basever in
4154             2) ;;
4155             2.*) ;;
4156             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4157         esac
4158         if [ "$first" = true ]; then
4159             case $gcc_basever in
4160                 4.2*)
4161                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4162             esac
4163         fi
4164         _cflags_speed='-O3'
4165         _cflags_size='-Os'
4166     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4167         _type=icc
4168         _ident=$($_cc --version | head -n1)
4169         _depflags='-MMD'
4170         _cflags_speed='-O3'
4171         _cflags_size='-Os'
4172         _cflags_noopt='-O1'
4173         _flags_filter=icc_flags
4174     elif $_cc -v 2>&1 | grep -q xlc; then
4175         _type=xlc
4176         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4177         _cflags_speed='-O5'
4178         _cflags_size='-O5 -qcompact'
4179     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4180         _type=ccc
4181         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4182         _DEPFLAGS='-M'
4183         _cflags_speed='-fast'
4184         _cflags_size='-O1'
4185         _flags_filter=ccc_flags
4186     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4187         test -d "$sysroot" || die "No valid sysroot specified."
4188         _type=armcc
4189         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4190         armcc_conf="$PWD/armcc.conf"
4191         $_cc --arm_linux_configure                 \
4192              --arm_linux_config_file="$armcc_conf" \
4193              --configure_sysroot="$sysroot"        \
4194              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4195              die "Error creating armcc configuration file."
4196         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4197         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4198         as_default="${cross_prefix}gcc"
4199         _depflags='-MMD'
4200         _cflags_speed='-O3'
4201         _cflags_size='-Os'
4202     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4203         _type=tms470
4204         _ident=$($_cc -version | head -n1 | tr -s ' ')
4205         _flags='--gcc --abi=eabi -me'
4206         _cc_e='-ppl -fe=$@'
4207         _cc_o='-fe=$@'
4208         _depflags='-ppa -ppd=$(@:.o=.d)'
4209         _cflags_speed='-O3 -mf=5'
4210         _cflags_size='-O3 -mf=2'
4211         _flags_filter=tms470_flags
4212     elif $_cc -v 2>&1 | grep -q clang; then
4213         _type=clang
4214         _ident=$($_cc --version 2>/dev/null | head -n1)
4215         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4216         _cflags_speed='-O3'
4217         _cflags_size='-Oz'
4218     elif $_cc -V 2>&1 | grep -q Sun; then
4219         _type=suncc
4220         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4221         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4222         _DEPFLAGS='-xM1 -xc99'
4223         _ldflags='-std=c99'
4224         _cflags_speed='-O5'
4225         _cflags_size='-O5 -xspace'
4226         _flags_filter=suncc_flags
4227     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4228         _type=pathscale
4229         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4230         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4231         _cflags_speed='-O2'
4232         _cflags_size='-Os'
4233         _flags_filter='filter_out -Wdisabled-optimization'
4234     elif $_cc -v 2>&1 | grep -q Open64; then
4235         _type=open64
4236         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4237         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4238         _cflags_speed='-O2'
4239         _cflags_size='-Os'
4240         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4241     elif $_cc -V 2>&1 | grep -q Portland; then
4242         _type=pgi
4243         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4244         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4245         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4246         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4247         _cflags_noopt="-O"
4248         _flags_filter=pgi_flags
4249     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4250         _type=armasm
4251         _ident=$($_cc | head -n1)
4252         # 4509: "This form of conditional instruction is deprecated"
4253         _flags="-nologo -ignore 4509"
4254         _flags_filter=armasm_flags
4255     elif $_cc 2>&1 | grep -q Intel; then
4256         _type=icl
4257         _ident=$($_cc 2>&1 | head -n1)
4258         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4259         # Not only is O3 broken on 13.x+ but it is slower on all previous
4260         # versions (tested) as well.
4261         _cflags_speed="-O2"
4262         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4263         if $_cc 2>&1 | grep -q Linker; then
4264             _ld_o='-out:$@'
4265         else
4266             _ld_o='-Fe$@'
4267         fi
4268         _cc_o='-Fo$@'
4269         _cc_e='-P'
4270         _flags_filter=icl_flags
4271         _ld_lib='lib%.a'
4272         _ld_path='-libpath:'
4273         # -Qdiag-error to make icl error when seeing certain unknown arguments
4274         _flags='-nologo -Qdiag-error:4044,10157'
4275         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4276         # with MSVC which enables it by default.
4277         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4278         disable stripping
4279     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4280         # lld can emulate multiple different linkers; in ms link.exe mode,
4281         # the -? parameter gives the help output which contains an identifyable
4282         # string, while it gives an error in other modes.
4283         _type=lld-link
4284         # The link.exe mode doesn't have a switch for getting the version,
4285         # but we can force it back to gnu mode and get the version from there.
4286         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4287         _ld_o='-out:$@'
4288         _flags_filter=msvc_flags
4289         _ld_lib='lib%.a'
4290         _ld_path='-libpath:'
4291     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4292         _type=msvc
4293         _ident=$($_cc 2>&1 | head -n1)
4294         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4295         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4296         _cflags_speed="-O2"
4297         _cflags_size="-O1"
4298         _cflags_noopt="-O1"
4299         if $_cc -nologo- 2>&1 | grep -q Linker; then
4300             _ld_o='-out:$@'
4301         else
4302             _ld_o='-Fe$@'
4303         fi
4304         _cc_o='-Fo$@'
4305         _cc_e='-P -Fi$@'
4306         _flags_filter=msvc_flags
4307         _ld_lib='lib%.a'
4308         _ld_path='-libpath:'
4309         _flags='-nologo'
4310         disable stripping
4311     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4312         _type=cparser
4313         _ident=$($_cc --version | head -n1)
4314         _depflags='-MMD'
4315         _cflags_speed='-O4'
4316         _cflags_size='-O2'
4317         _flags_filter=cparser_flags
4318     fi
4319
4320     eval ${pfx}_type=\$_type
4321     eval ${pfx}_ident=\$_ident
4322 }
4323
4324 set_ccvars(){
4325     eval ${1}_C=\${_cc_c-\${${1}_C}}
4326     eval ${1}_E=\${_cc_e-\${${1}_E}}
4327     eval ${1}_O=\${_cc_o-\${${1}_O}}
4328
4329     if [ -n "$_depflags" ]; then
4330         eval ${1}_DEPFLAGS=\$_depflags
4331     else
4332         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4333         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4334         eval DEP${1}FLAGS=\$_flags
4335     fi
4336 }
4337
4338 probe_cc cc "$cc" "true"
4339 cflags_filter=$_flags_filter
4340 cflags_speed=$_cflags_speed
4341 cflags_size=$_cflags_size
4342 cflags_noopt=$_cflags_noopt
4343 add_cflags $_flags $_cflags
4344 cc_ldflags=$_ldflags
4345 set_ccvars CC
4346 set_ccvars CXX
4347
4348 probe_cc hostcc "$host_cc"
4349 host_cflags_filter=$_flags_filter
4350 host_cflags_speed=$_cflags_speed
4351 add_host_cflags  $_flags $_cflags
4352 set_ccvars HOSTCC
4353
4354 test -n "$cc_type" && enable $cc_type ||
4355     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4356
4357 : ${as_default:=$cc}
4358 : ${objcc_default:=$cc}
4359 : ${dep_cc_default:=$cc}
4360 : ${ld_default:=$cc}
4361 : ${host_ld_default:=$host_cc}
4362 set_default ar as objcc dep_cc ld ln_s host_ld windres
4363
4364 probe_cc as "$as"
4365 asflags_filter=$_flags_filter
4366 add_asflags $_flags $_cflags
4367 set_ccvars AS
4368
4369 probe_cc objcc "$objcc"
4370 objcflags_filter=$_flags_filter
4371 add_objcflags $_flags $_cflags
4372 set_ccvars OBJC
4373
4374 probe_cc ld "$ld"
4375 ldflags_filter=$_flags_filter
4376 add_ldflags $_flags $_ldflags
4377 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4378 LD_O=${_ld_o-$LD_O}
4379 LD_LIB=${_ld_lib-$LD_LIB}
4380 LD_PATH=${_ld_path-$LD_PATH}
4381
4382 probe_cc hostld "$host_ld"
4383 host_ldflags_filter=$_flags_filter
4384 add_host_ldflags $_flags $_ldflags
4385 HOSTLD_O=${_ld_o-$HOSTLD_O}
4386
4387 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4388     probe_cc depcc "$dep_cc"
4389     CCDEP=${_DEPCMD:-$DEPCMD}
4390     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4391     DEPCCFLAGS=$_flags
4392 fi
4393
4394 if $ar 2>&1 | grep -q Microsoft; then
4395     arflags="-nologo"
4396     ar_o='-out:$@'
4397 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4398     arflags="rq"
4399     ar_o='$@'
4400 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4401     arflags='-Xany -r -c'
4402     ar_o='$@'
4403 elif $ar 2>&1 | grep -q "\[D\] "; then
4404     arflags="rcD"
4405     ar_o='$@'
4406 else
4407     arflags="rc"
4408     ar_o='$@'
4409 fi
4410
4411 add_cflags $extra_cflags
4412 add_cxxflags $extra_cxxflags
4413 add_objcflags $extra_objcflags
4414 add_asflags $extra_cflags
4415
4416 if test -n "$sysroot"; then
4417     case "$cc_type" in
4418         gcc|llvm_gcc|clang)
4419             add_cppflags --sysroot="$sysroot"
4420             add_ldflags --sysroot="$sysroot"
4421 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4422             add_cppflags -isysroot "$sysroot"
4423             add_ldflags -isysroot "$sysroot"
4424         ;;
4425         tms470)
4426             add_cppflags -I"$sysinclude"
4427             add_ldflags  --sysroot="$sysroot"
4428         ;;
4429     esac
4430 fi
4431
4432 if test "$cpu" = host; then
4433     enabled cross_compile &&
4434         die "--cpu=host makes no sense when cross-compiling."
4435
4436     case "$cc_type" in
4437         gcc|llvm_gcc)
4438             check_native(){
4439                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4440                 sed -n "/cc1.*$1=/{
4441                             s/.*$1=\\([^ ]*\\).*/\\1/
4442                             p
4443                             q
4444                         }" $TMPE
4445             }
4446             cpu=$(check_native -march || check_native -mcpu)
4447         ;;
4448         clang)
4449             check_native(){
4450                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4451                 sed -n "/cc1.*-target-cpu /{
4452                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4453                             p
4454                             q
4455                         }" $TMPE
4456             }
4457             cpu=$(check_native -march)
4458         ;;
4459     esac
4460
4461     test "${cpu:-host}" = host &&
4462         die "--cpu=host not supported with compiler $cc"
4463 fi
4464
4465 # Deal with common $arch aliases
4466 case "$arch" in
4467     aarch64|arm64)
4468         arch="aarch64"
4469     ;;
4470     arm*|iPad*|iPhone*)
4471         arch="arm"
4472     ;;
4473     mips*|IP*)
4474         case "$arch" in
4475         *el)
4476             add_cppflags -EL
4477             add_ldflags -EL
4478         ;;
4479         *eb)
4480             add_cppflags -EB
4481             add_ldflags -EB
4482         ;;
4483         esac
4484         arch="mips"
4485     ;;
4486     parisc*|hppa*)
4487         arch="parisc"
4488     ;;
4489     "Power Macintosh"|ppc*|powerpc*)
4490         arch="ppc"
4491     ;;
4492     s390|s390x)
4493         arch="s390"
4494     ;;
4495     sh4|sh)
4496         arch="sh4"
4497     ;;
4498     sun4*|sparc*)
4499         arch="sparc"
4500     ;;
4501     tilegx|tile-gx)
4502         arch="tilegx"
4503     ;;
4504     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4505         arch="x86"
4506     ;;
4507 esac
4508
4509 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4510 enable $arch
4511
4512 # Add processor-specific flags
4513 if enabled aarch64; then
4514
4515     case $cpu in
4516         armv*)
4517             cpuflags="-march=$cpu"
4518         ;;
4519         *)
4520             cpuflags="-mcpu=$cpu"
4521         ;;
4522     esac
4523
4524 elif enabled alpha; then
4525
4526     cpuflags="-mcpu=$cpu"
4527
4528 elif enabled arm; then
4529
4530     check_arm_arch() {
4531         check_cpp_condition stddef.h \
4532             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4533             $cpuflags
4534     }
4535
4536     probe_arm_arch() {
4537         if   check_arm_arch 4;        then echo armv4
4538         elif check_arm_arch 4T;       then echo armv4t
4539         elif check_arm_arch 5;        then echo armv5
4540         elif check_arm_arch 5E;       then echo armv5e
4541         elif check_arm_arch 5T;       then echo armv5t
4542         elif check_arm_arch 5TE;      then echo armv5te
4543         elif check_arm_arch 5TEJ;     then echo armv5te
4544         elif check_arm_arch 6;        then echo armv6
4545         elif check_arm_arch 6J;       then echo armv6j
4546         elif check_arm_arch 6K;       then echo armv6k
4547         elif check_arm_arch 6Z;       then echo armv6z
4548         elif check_arm_arch 6ZK;      then echo armv6zk
4549         elif check_arm_arch 6T2;      then echo armv6t2
4550         elif check_arm_arch 7;        then echo armv7
4551         elif check_arm_arch 7A  7_A;  then echo armv7-a
4552         elif check_arm_arch 7S;       then echo armv7-a
4553         elif check_arm_arch 7R  7_R;  then echo armv7-r
4554         elif check_arm_arch 7M  7_M;  then echo armv7-m
4555         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4556         elif check_arm_arch 8A  8_A;  then echo armv8-a
4557         fi
4558     }
4559
4560     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4561
4562     case $cpu in
4563         armv*)
4564             cpuflags="-march=$cpu"
4565             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4566         ;;
4567         *)
4568             cpuflags="-mcpu=$cpu"
4569             case $cpu in
4570                 cortex-a*)                               subarch=armv7a  ;;
4571                 cortex-r*)                               subarch=armv7r  ;;
4572                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4573                 arm11*)                                  subarch=armv6   ;;
4574                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4575                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4576                 *)                             subarch=$(probe_arm_arch) ;;
4577             esac
4578         ;;
4579     esac
4580
4581     case "$subarch" in
4582         armv5t*)    enable fast_clz                ;;
4583         armv[6-8]*)
4584             enable fast_clz
4585             disabled fast_unaligned || enable fast_unaligned
4586             ;;
4587     esac
4588
4589 elif enabled avr32; then
4590
4591     case $cpu in
4592         ap7[02]0[0-2])
4593             subarch="avr32_ap"
4594             cpuflags="-mpart=$cpu"
4595         ;;
4596         ap)
4597             subarch="avr32_ap"
4598             cpuflags="-march=$cpu"
4599         ;;
4600         uc3[ab]*)
4601             subarch="avr32_uc"
4602             cpuflags="-mcpu=$cpu"
4603         ;;
4604         uc)
4605             subarch="avr32_uc"
4606             cpuflags="-march=$cpu"
4607         ;;
4608     esac
4609
4610 elif enabled bfin; then
4611
4612     cpuflags="-mcpu=$cpu"
4613
4614 elif enabled mips; then
4615
4616     cpuflags="-march=$cpu"
4617
4618     if [ "$cpu" != "generic" ]; then
4619         disable mips32r2
4620         disable mips32r5
4621         disable mips64r2
4622         disable mips32r6
4623         disable mips64r6
4624         disable loongson2
4625         disable loongson3
4626
4627         case $cpu in
4628             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4629                 enable mips32r2
4630                 disable msa
4631             ;;
4632             p5600|i6400|p6600)
4633                 disable mipsdsp
4634                 disable mipsdspr2
4635             ;;
4636             loongson*)
4637                 enable loongson2
4638                 enable loongson3
4639                 enable local_aligned_8 local_aligned_16 local_aligned_32
4640                 enable simd_align_16
4641                 enable fast_64bit
4642                 enable fast_clz
4643                 enable fast_cmov
4644                 enable fast_unaligned
4645                 disable aligned_stack
4646                 disable mipsfpu
4647                 disable mipsdsp
4648                 disable mipsdspr2
4649                 case $cpu in
4650                     loongson3*)
4651                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4652                     ;;
4653                     loongson2e)
4654                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4655                     ;;
4656                     loongson2f)
4657                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4658                     ;;
4659                 esac
4660             ;;
4661             *)
4662                 # Unknown CPU. Disable everything.
4663                 warn "unknown CPU. Disabling all MIPS optimizations."
4664                 disable mipsfpu
4665                 disable mipsdsp
4666                 disable mipsdspr2
4667                 disable msa
4668                 disable mmi
4669             ;;
4670         esac
4671
4672         case $cpu in
4673             24kc)
4674                 disable mipsfpu
4675                 disable mipsdsp
4676                 disable mipsdspr2
4677             ;;
4678             24kf*)
4679                 disable mipsdsp
4680                 disable mipsdspr2
4681             ;;
4682             24kec|34kc|1004kc)
4683                 disable mipsfpu
4684                 disable mipsdspr2
4685             ;;
4686             24kef*|34kf*|1004kf*)
4687                 disable mipsdspr2
4688             ;;
4689             74kc)
4690                 disable mipsfpu
4691             ;;
4692             p5600)
4693                 enable mips32r5
4694                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4695             ;;
4696             i6400)
4697                 enable mips64r6
4698                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4699             ;;
4700             p6600)
4701                 enable mips64r6
4702                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4703             ;;
4704         esac
4705     else
4706         # We do not disable anything. Is up to the user to disable the unwanted features.
4707         warn 'generic cpu selected'
4708     fi
4709
4710 elif enabled ppc; then
4711
4712     disable ldbrx
4713
4714     case $(tolower $cpu) in
4715         601|ppc601|powerpc601)
4716             cpuflags="-mcpu=601"
4717             disable altivec
4718         ;;
4719         603*|ppc603*|powerpc603*)
4720             cpuflags="-mcpu=603"
4721             disable altivec
4722         ;;
4723         604*|ppc604*|powerpc604*)
4724             cpuflags="-mcpu=604"
4725             disable altivec
4726         ;;
4727         g3|75*|ppc75*|powerpc75*)
4728             cpuflags="-mcpu=750"
4729             disable altivec
4730         ;;
4731         g4|745*|ppc745*|powerpc745*)
4732             cpuflags="-mcpu=7450"
4733             disable vsx
4734         ;;
4735         74*|ppc74*|powerpc74*)
4736             cpuflags="-mcpu=7400"
4737             disable vsx
4738         ;;
4739         g5|970|ppc970|powerpc970)
4740             cpuflags="-mcpu=970"
4741             disable vsx
4742         ;;
4743         power[3-6]*)
4744             cpuflags="-mcpu=$cpu"
4745             disable vsx
4746         ;;
4747         power[7-8]*)
4748             cpuflags="-mcpu=$cpu"
4749         ;;
4750         cell)
4751             cpuflags="-mcpu=cell"
4752             enable ldbrx
4753             disable vsx
4754         ;;
4755         e500mc)
4756             cpuflags="-mcpu=e500mc"
4757             disable altivec
4758         ;;
4759         e500v2)
4760             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4761             disable altivec
4762             disable dcbzl
4763         ;;
4764         e500)
4765             cpuflags="-mcpu=8540 -mhard-float"
4766             disable altivec
4767             disable dcbzl
4768         ;;
4769     esac
4770
4771 elif enabled sparc; then
4772
4773     case $cpu in
4774         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4775             cpuflags="-mcpu=$cpu"
4776         ;;
4777         ultrasparc*|niagara[234])
4778             cpuflags="-mcpu=$cpu"
4779         ;;
4780     esac
4781
4782 elif enabled x86; then
4783
4784     case $cpu in
4785         i[345]86|pentium)
4786             cpuflags="-march=$cpu"
4787             disable i686
4788             disable mmx
4789         ;;
4790         # targets that do NOT support nopl and conditional mov (cmov)
4791         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4792             cpuflags="-march=$cpu"
4793             disable i686
4794         ;;
4795         # targets that do support nopl and conditional mov (cmov)
4796         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4797         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4798         |amdfam10|barcelona|b[dt]ver*|znver*)
4799             cpuflags="-march=$cpu"
4800             enable i686
4801             enable fast_cmov
4802         ;;
4803         # targets that do support conditional mov but on which it's slow
4804         pentium4|pentium4m|prescott|nocona)
4805             cpuflags="-march=$cpu"
4806             enable i686
4807             disable fast_cmov
4808         ;;
4809     esac
4810
4811 fi
4812
4813 if [ "$cpu" != generic ]; then
4814     add_cflags  $cpuflags
4815     add_asflags $cpuflags
4816     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4817 fi
4818
4819 # compiler sanity check
4820 check_exec <<EOF
4821 int main(void){ return 0; }
4822 EOF
4823 if test "$?" != 0; then
4824     echo "$cc is unable to create an executable file."
4825     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4826         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4827         echo "Only do this if you know what cross compiling means."
4828     fi
4829     die "C compiler test failed."
4830 fi
4831
4832 add_cppflags -D_ISOC99_SOURCE
4833 add_cxxflags -D__STDC_CONSTANT_MACROS
4834 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4835
4836 # some compilers silently accept -std=c11, so we also need to check that the
4837 # version macro is defined properly
4838 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4839     add_cflags -std=c11 ||
4840     check_cflags -std=c99
4841
4842 check_cppflags -D_FILE_OFFSET_BITS=64
4843 check_cppflags -D_LARGEFILE_SOURCE
4844
4845 add_host_cppflags -D_ISOC99_SOURCE
4846 check_host_cflags -std=c99
4847 check_host_cflags -Wall
4848 check_host_cflags $host_cflags_speed
4849
4850 check_64bit(){
4851     arch32=$1
4852     arch64=$2
4853     expr=$3
4854     check_code cc "" "int test[2*($expr) - 1]" &&
4855         subarch=$arch64 || subarch=$arch32
4856 }
4857
4858 case "$arch" in
4859     aarch64|alpha|ia64)
4860         spic=$shared
4861     ;;
4862     mips)
4863         check_64bit mips mips64 '_MIPS_SIM > 1'
4864         spic=$shared
4865     ;;
4866     parisc)
4867         check_64bit parisc parisc64 'sizeof(void *) > 4'
4868         spic=$shared
4869     ;;
4870     ppc)
4871         check_64bit ppc ppc64 'sizeof(void *) > 4'
4872         spic=$shared
4873     ;;
4874     s390)
4875         check_64bit s390 s390x 'sizeof(void *) > 4'
4876         spic=$shared
4877     ;;
4878     sparc)
4879         check_64bit sparc sparc64 'sizeof(void *) > 4'
4880         spic=$shared
4881     ;;
4882     x86)
4883         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4884         # Treat x32 as x64 for now. Note it also needs spic=$shared
4885         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4886             subarch=x86_64
4887         if test "$subarch" = "x86_64"; then
4888             spic=$shared
4889         fi
4890     ;;
4891     ppc)
4892         check_cc <<EOF && subarch="ppc64"
4893         int test[(int)sizeof(char*) - 7];
4894 EOF
4895     ;;
4896 esac
4897
4898 enable $subarch
4899 enabled spic && enable_weak pic
4900
4901 enabled x86_64 && objformat=elf64 || objformat="elf32"
4902
4903 # OS specific
4904 case $target_os in
4905     aix)
4906         SHFLAGS=-shared
4907         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4908         enabled shared && add_ldflags -Wl,-brtl
4909         ;;
4910     android)
4911         disable symver
4912         enable section_data_rel_ro
4913         SLIB_INSTALL_NAME='$(SLIBNAME)'
4914         SLIB_INSTALL_LINKS=
4915         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4916         ;;
4917     haiku)
4918         prefix_default="/boot/common"
4919         network_extralibs="-lnetwork"
4920         host_extralibs=
4921         ;;
4922     sunos)
4923         SHFLAGS='-shared -Wl,-h,$$(@F)'
4924         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4925         network_extralibs="-lsocket -lnsl"
4926         add_cppflags -D__EXTENSIONS__
4927         # When using suncc to build, the Solaris linker will mark
4928         # an executable with each instruction set encountered by
4929         # the Solaris assembler.  As our libraries contain their own
4930         # guards for processor-specific code, instead suppress
4931         # generation of the HWCAPS ELF section on Solaris x86 only.
4932         enabled_all suncc x86 &&
4933             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4934             add_ldflags -Wl,-M,mapfile
4935         nm_default='nm -P -g'
4936         version_script='-M'
4937         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4938         ;;
4939     netbsd)
4940         disable symver
4941         oss_indev_extralibs="-lossaudio"
4942         oss_outdev_extralibs="-lossaudio"
4943         enabled gcc || check_ldflags -Wl,-zmuldefs
4944         ;;
4945     openbsd|bitrig)
4946         disable symver
4947         SHFLAGS='-shared'
4948         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4949         SLIB_INSTALL_LINKS=
4950         oss_indev_extralibs="-lossaudio"
4951         oss_outdev_extralibs="-lossaudio"
4952         ;;
4953     dragonfly)
4954         disable symver
4955         ;;
4956     freebsd)
4957         ;;
4958     bsd/os)
4959         add_extralibs -lpoll -lgnugetopt
4960         strip="strip -d"
4961         ;;
4962     darwin)
4963         enabled ppc && add_asflags -force_cpusubtype_ALL
4964         install_name_dir_default='$(SHLIBDIR)'
4965         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4966         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4967         strip="${strip} -x"
4968         add_ldflags -Wl,-dynamic,-search_paths_first
4969         SLIBSUF=".dylib"
4970         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4971         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4972         objformat="macho"
4973         enabled x86_64 && objformat="macho64" || objformat="macho32"
4974         enabled_any pic shared x86_64 ||
4975             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4976         check_header dispatch/dispatch.h &&
4977             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4978         version_script='-exported_symbols_list'
4979         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4980         ;;
4981     msys*)
4982         die "Native MSYS builds are discouraged, please use the MINGW environment."
4983         ;;
4984     mingw32*|mingw64*)
4985         if test $target_os = "mingw32ce"; then
4986             disable network
4987         else
4988             target_os=mingw32
4989         fi
4990         LIBTARGET=i386
4991         if enabled x86_64; then
4992             LIBTARGET="i386:x86-64"
4993         elif enabled arm; then
4994             LIBTARGET=arm-wince
4995         fi
4996         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4997         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4998         shlibdir_default="$bindir_default"
4999         SLIBPREF=""
5000         SLIBSUF=".dll"
5001         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5002         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5003         dlltool="${cross_prefix}dlltool"
5004         if check_cmd lib.exe -list; then
5005             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5006             if enabled x86_64; then
5007                 LIBTARGET=x64
5008             fi
5009         elif check_cmd $dlltool --version; then
5010             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5011         fi
5012         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5013         SLIB_INSTALL_LINKS=
5014         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5015         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5016         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5017         enabled x86_64 && objformat="win64" || objformat="win32"
5018         ranlib=:
5019         enable dos_paths
5020         check_ldflags -Wl,--nxcompat,--dynamicbase
5021         # Lets work around some stupidity in binutils.
5022         # ld will strip relocations from executables even though we need them
5023         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5024         # however ld then forgets what the entry point should be (oops) so we
5025         # have to manually (re)set it.
5026         if enabled x86_32; then
5027             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5028         elif enabled x86_64; then
5029             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5030             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5031             # Set image base >4GB for extra entropy with HEASLR
5032             add_ldexeflags -Wl,--image-base,0x140000000
5033             append SHFLAGS -Wl,--image-base,0x180000000
5034         fi
5035         ;;
5036     win32|win64)
5037         disable symver
5038         if enabled shared; then
5039             # Link to the import library instead of the normal static library
5040             # for shared libs.
5041             LD_LIB='%.lib'
5042             # Cannot build both shared and static libs with MSVC or icl.
5043             disable static
5044         fi
5045         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5046         shlibdir_default="$bindir_default"
5047         SLIBPREF=""
5048         SLIBSUF=".dll"
5049         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5050         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5051         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5052         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5053         SLIB_INSTALL_LINKS=
5054         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5055         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5056         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5057         enabled x86_64 && objformat="win64" || objformat="win32"
5058         ranlib=:
5059         enable dos_paths
5060         ;;
5061     cygwin*)
5062         target_os=cygwin
5063         shlibdir_default="$bindir_default"
5064         SLIBPREF="cyg"
5065         SLIBSUF=".dll"
5066         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5067         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5068         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5069         SLIB_INSTALL_LINKS=
5070         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5071         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5072         enabled x86_64 && objformat="win64" || objformat="win32"
5073         enable dos_paths
5074         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5075         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5076         ;;
5077     *-dos|freedos|opendos)
5078         network_extralibs="-lsocket"
5079         objformat="coff"
5080         enable dos_paths
5081         add_cppflags -U__STRICT_ANSI__
5082         ;;
5083     linux)
5084         enable section_data_rel_ro
5085         enabled_any arm aarch64 && enable_weak linux_perf
5086         ;;
5087     irix*)
5088         target_os=irix
5089         ranlib="echo ignoring ranlib"
5090         ;;
5091     os/2*)
5092         strip="lxlite -CS"
5093         striptype=""
5094         objformat="aout"
5095         add_cppflags -D_GNU_SOURCE
5096         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5097         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5098         LIBSUF="_s.a"
5099         SLIBPREF=""
5100         SLIBSUF=".dll"
5101         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5102         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5103         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5104             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5105             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5106             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5107             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5108         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5109             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5110         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5111         SLIB_INSTALL_LINKS=
5112         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5113         enable dos_paths
5114         enable_weak os2threads
5115         ;;
5116     gnu/kfreebsd)
5117         add_cppflags -D_BSD_SOURCE
5118         ;;
5119     gnu)
5120         ;;
5121     qnx)
5122         add_cppflags -D_QNX_SOURCE
5123         network_extralibs="-lsocket"
5124         ;;
5125     symbian)
5126         SLIBSUF=".dll"
5127         enable dos_paths
5128         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5129         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5130         add_ldflags -Wl,--target1-abs,--no-undefined \
5131                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5132                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5133         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5134                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5135                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5136         ;;
5137     osf1)
5138         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5139         ;;
5140     minix)
5141         ;;
5142     none)
5143         ;;
5144     *)
5145         die "Unknown OS '$target_os'."
5146         ;;
5147 esac
5148
5149 # test if creating links works
5150 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5151 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5152 mkdir "$link_dest"
5153 $ln_s "$link_dest" "$link_name"
5154 touch "$link_dest/test_file"
5155 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5156     # create link to source path
5157     [ -e src ] && rm src
5158     $ln_s "$source_path" src
5159     source_link=src
5160 else
5161     # creating directory links doesn't work
5162     # fall back to using the full source path
5163     source_link="$source_path"
5164 fi
5165 # cleanup
5166 rm -r "$link_dest"
5167 rm -r "$link_name"
5168
5169 # determine libc flavour
5170
5171 probe_libc(){
5172     pfx=$1
5173     pfx_no_=${pfx%_}
5174     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5175     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5176         eval ${pfx}libc_type=uclibc
5177         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5178     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5179         eval ${pfx}libc_type=glibc
5180         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5181     # MinGW headers can be installed on Cygwin, so check for newlib first.
5182     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5183         eval ${pfx}libc_type=newlib
5184         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5185     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5186     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5187         eval ${pfx}libc_type=mingw64
5188         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5189             add_compat msvcrt/snprintf.o
5190             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5191         fi
5192         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5193         eval test \$${pfx_no_}cc_type = "gcc" &&
5194             add_${pfx}cppflags -D__printf__=__gnu_printf__
5195     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5196          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5197         eval ${pfx}libc_type=mingw32
5198         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5199             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5200             die "ERROR: MinGW32 runtime version must be >= 3.15."
5201         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5202         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5203             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5204         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5205             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5206         eval test \$${pfx_no_}cc_type = "gcc" &&
5207             add_${pfx}cppflags -D__printf__=__gnu_printf__
5208     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5209         eval ${pfx}libc_type=msvcrt
5210         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5211             if [ "$pfx" = host_ ]; then
5212                 add_host_cppflags -Dsnprintf=_snprintf
5213             else
5214                 add_compat strtod.o strtod=avpriv_strtod
5215                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5216                                              _snprintf=avpriv_snprintf  \
5217                                              vsnprintf=avpriv_vsnprintf
5218             fi
5219         fi
5220         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5221         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5222         # 0x601 by default unless something else is set by the user.
5223         # This can easily lead to us detecting functions only present
5224         # in such new versions and producing binaries requiring windows 7.0.
5225         # Therefore explicitly set the default to XP unless the user has
5226         # set something else on the command line.
5227         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5228         # family. For these cases, configure is free to use any functions
5229         # found in the SDK headers by default. (Alternatively, we could force
5230         # _WIN32_WINNT to 0x0602 in that case.)
5231         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5232             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5233 #ifdef WINAPI_FAMILY
5234 #include <winapifamily.h>
5235 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5236 #error not desktop
5237 #endif
5238 #endif
5239 EOF
5240         if [ "$pfx" = "" ]; then
5241             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5242             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5243         fi
5244     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5245         eval ${pfx}libc_type=klibc
5246     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5247         eval ${pfx}libc_type=bionic
5248     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5249         eval ${pfx}libc_type=solaris
5250         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5251     fi
5252     check_${pfx}cc <<EOF
5253 #include <time.h>
5254 void *v = localtime_r;
5255 EOF
5256 test "$?" != 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
5257 #include <time.h>
5258 void *v = localtime_r;
5259 EOF
5260
5261 }
5262
5263 probe_libc
5264 test -n "$libc_type" && enable libc_$libc_type
5265 probe_libc host_
5266 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5267
5268 # hacks for compiler/libc/os combinations
5269
5270 case $libc_type in
5271     bionic)
5272         add_compat strtod.o strtod=avpriv_strtod
5273         ;;
5274     glibc)
5275         if enabled tms470; then
5276             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5277             add_cppflags -D__USER_LABEL_PREFIX__=
5278             add_cppflags -D__builtin_memset=memset
5279             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5280             add_cflags   -pds=48    # incompatible redefinition of macro
5281         elif enabled ccc; then
5282             add_ldflags -Wl,-z,now  # calls to libots crash without this
5283         fi
5284         ;;
5285 esac
5286
5287 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5288     add_cppflags '-I\$(SRC_PATH)/compat/float'
5289
5290 esc(){
5291     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5292 }
5293
5294 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5295
5296 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5297
5298 set_default libdir
5299 : ${shlibdir_default:="$libdir"}
5300 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5301
5302 set_default $PATHS_LIST
5303 set_default nm
5304
5305 # we need to build at least one lib type
5306 if ! enabled_any static shared; then
5307     cat <<EOF
5308 At least one library type must be built.
5309 Specify --enable-static to build the static libraries or --enable-shared to
5310 build the shared libraries as well. To only build the shared libraries specify
5311 --disable-static in addition to --enable-shared.
5312 EOF
5313     exit 1
5314 fi
5315
5316 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5317
5318 enable_weak_pic() {
5319     disabled pic && return
5320     enable pic
5321     add_cppflags -DPIC
5322     case "$target_os" in
5323     mingw*|cygwin*)
5324         ;;
5325     *)
5326         add_cflags -fPIC
5327         ;;
5328     esac
5329     add_asflags  -fPIC
5330 }
5331
5332 enabled pic && enable_weak_pic
5333
5334 check_cc <<EOF || die "Symbol mangling check failed."
5335 int ff_extern;
5336 EOF
5337 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5338 extern_prefix=${sym%%ff_extern*}
5339
5340 check_inline_asm inline_asm '"" ::'
5341
5342 _restrict=
5343 for restrict_keyword in restrict __restrict__ __restrict; do
5344     check_cc <<EOF && _restrict=$restrict_keyword && break
5345 void foo(char * $restrict_keyword p);
5346 EOF
5347 done
5348
5349 check_cc <<EOF && enable pragma_deprecated
5350 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5351 EOF
5352
5353 check_cc <<EOF && enable attribute_packed
5354 struct { int x; } __attribute__((packed)) x;
5355 EOF
5356
5357 check_cc <<EOF && enable attribute_may_alias
5358 union { int x; } __attribute__((may_alias)) x;
5359 EOF
5360
5361 check_cc <<EOF || die "endian test failed"
5362 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5363 EOF
5364 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5365
5366 check_cc <<EOF && enable const_nan
5367 #include <math.h>
5368 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5369 EOF
5370
5371 if ! enabled ppc64 || enabled bigendian; then
5372     disable vsx
5373 fi
5374
5375 check_gas() {
5376     log "check_gas using '$as' as AS"
5377     # :vararg is used on aarch64, arm and ppc altivec
5378     check_as <<EOF || return 1
5379 .macro m n, y:vararg=0
5380 \n: .int \y
5381 .endm
5382 m x
5383 EOF
5384     # .altmacro is only used in arm asm
5385     ! enabled arm || check_as <<EOF || return 1
5386 .altmacro
5387 EOF
5388     enable gnu_as
5389     return 0
5390 }
5391
5392 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5393     nogas=:
5394     enabled_any arm aarch64 && nogas=die
5395     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5396     as_noop=-v
5397
5398     case $as_type in
5399         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5400         gcc)  gaspp_as_type=gas ;;
5401         *)    gaspp_as_type=$as_type ;;
5402     esac
5403
5404     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5405
5406     test "${as#*gas-preprocessor.pl}" != "$as" ||
5407     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5408         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5409
5410     if ! check_gas ; then
5411         as=${gas:=$as}
5412         check_gas || \
5413             $nogas "GNU assembler not found, install/update gas-preprocessor"
5414     fi
5415
5416     check_as <<EOF && enable as_func
5417 .func test
5418 .endfunc
5419 EOF
5420 fi
5421
5422 check_inline_asm inline_asm_labels '"1:\n"'
5423
5424 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5425
5426 if enabled aarch64; then
5427     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5428     # internal assembler in clang 3.3 does not support this instruction
5429     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5430     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5431
5432     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5433
5434 elif enabled alpha; then
5435
5436     check_cflags -mieee
5437
5438 elif enabled arm; then
5439
5440     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5441
5442     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5443 float func(float a, float b){ return a+b; }
5444 EOF
5445
5446     enabled thumb && check_cflags -mthumb || check_cflags -marm
5447
5448     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5449         enable vfp_args
5450     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5451         enable vfp_args
5452     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5453         case "${cross_prefix:-$cc}" in
5454             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5455             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5456 __asm__ (".eabi_attribute 28, 1");
5457 int main(void) { return 0; }
5458 EOF
5459         esac
5460         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5461     fi
5462
5463     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5464     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5465     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5466     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5467     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5468     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5469     enabled setend  && check_insn setend  'setend be'
5470
5471     [ $target_os = linux ] || [ $target_os = android ] ||
5472         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5473             $ARCH_EXT_LIST_ARM
5474
5475     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5476
5477     check_as <<EOF && enable as_dn_directive
5478 ra .dn d0.i16
5479 .unreq ra
5480 EOF
5481     check_as <<EOF && enable as_fpu_directive
5482 .fpu neon
5483 EOF
5484
5485     # llvm's integrated assembler supports .object_arch from llvm 3.5
5486     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5487         check_as <<EOF && enable as_object_arch
5488 .object_arch armv4
5489 EOF
5490
5491     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5492
5493 elif enabled mips; then
5494
5495     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5496     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5497     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5498
5499     # Enable minimum ISA based on selected options
5500     if enabled mips64; then
5501         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5502         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5503         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5504     else
5505         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5506         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5507         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5508         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5509     fi
5510
5511     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5512     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5513     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5514     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5515     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5516
5517     if enabled bigendian && enabled msa; then
5518         disable msa
5519     fi
5520
5521 elif enabled parisc; then
5522
5523     if enabled gcc; then
5524         case $($cc -dumpversion) in
5525             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5526         esac
5527     fi
5528
5529 elif enabled ppc; then
5530
5531     enable local_aligned_8 local_aligned_16 local_aligned_32
5532
5533     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5534     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5535     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5536     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5537
5538     # AltiVec flags: The FSF version of GCC differs from the Apple version
5539     if enabled altivec; then
5540         check_cflags -maltivec -mabi=altivec &&
5541         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5542         check_cflags -faltivec
5543
5544         # check if our compiler supports Motorola AltiVec C API
5545         check_cc <<EOF || disable altivec
5546 $inc_altivec_h
5547 int main(void) {
5548     vector signed int v1 = (vector signed int) { 0 };
5549     vector signed int v2 = (vector signed int) { 1 };
5550     v1 = vec_add(v1, v2);
5551     return 0;
5552 }
5553 EOF
5554
5555         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5556     fi
5557
5558     if enabled vsx; then
5559         check_cflags -mvsx &&
5560         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5561     fi
5562
5563     if enabled power8; then
5564         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5565     fi
5566
5567 elif enabled x86; then
5568
5569     check_builtin rdtsc    intrin.h   "__rdtsc()"
5570     check_builtin mm_empty mmintrin.h "_mm_empty()"
5571
5572     enable local_aligned_8 local_aligned_16 local_aligned_32
5573
5574     # check whether EBP is available on x86
5575     # As 'i' is stored on the stack, this program will crash
5576     # if the base pointer is used to access it because the
5577     # base pointer is cleared in the inline assembly code.
5578     check_exec_crash <<EOF && enable ebp_available
5579 volatile int i=0;
5580 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5581 return i;
5582 EOF
5583
5584     # check whether EBX is available on x86
5585     check_inline_asm ebx_available '""::"b"(0)' &&
5586         check_inline_asm ebx_available '"":::"%ebx"'
5587
5588     # check whether xmm clobbers are supported
5589     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5590
5591     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5592         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5593
5594     # check whether binutils is new enough to compile SSSE3/MMXEXT
5595     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5596     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5597
5598     probe_x86asm(){
5599         x86asmexe_probe=$1
5600         if check_cmd $x86asmexe_probe -v; then
5601             x86asmexe=$x86asmexe_probe
5602             x86asm_type=nasm
5603             x86asm_debug="-g -F dwarf"
5604         elif check_cmd $x86asmexe_probe --version; then
5605             x86asmexe=$x86asmexe_probe
5606             x86asm_type=yasm
5607             x86asm_debug="-g dwarf2"
5608         fi
5609         check_x86asm "movbe ecx, [5]" && enable x86asm
5610     }
5611
5612     if ! disabled_any asm mmx x86asm; then
5613         disable x86asm
5614         for program in $x86asmexe nasm yasm; do
5615             probe_x86asm $program && break
5616         done
5617         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5618         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5619         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5620         X86ASMFLAGS="-f $objformat"
5621         enabled pic               && append X86ASMFLAGS "-DPIC"
5622         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5623         case "$objformat" in
5624             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5625         esac
5626
5627         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5628         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5629         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5630         check_x86asm "CPU amdnop" || disable cpunop
5631     fi
5632
5633     case "$cpu" in
5634         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5635             disable fast_clz
5636         ;;
5637     esac
5638
5639 fi
5640
5641 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5642
5643 check_ldflags -Wl,--as-needed
5644 check_ldflags -Wl,-z,noexecstack
5645
5646 if ! disabled network; then
5647     check_func getaddrinfo $network_extralibs
5648     check_func inet_aton $network_extralibs
5649
5650     check_type netdb.h "struct addrinfo"
5651     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5652     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5653     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5654     check_type poll.h "struct pollfd"
5655     check_type netinet/sctp.h "struct sctp_event_subscribe"
5656     check_struct "sys/socket.h" "struct msghdr" msg_flags
5657     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5658     check_type netinet/in.h "struct sockaddr_in6"
5659     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5660     check_type "sys/types.h sys/socket.h" socklen_t
5661
5662     # Prefer arpa/inet.h over winsock2
5663     if check_header arpa/inet.h ; then
5664         check_func closesocket
5665     elif check_header winsock2.h ; then
5666         check_func_headers winsock2.h closesocket -lws2 &&
5667             network_extralibs="-lws2" ||
5668         { check_func_headers winsock2.h closesocket -lws2_32 &&
5669             network_extralibs="-lws2_32"; } || disable winsock2_h network
5670         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5671
5672         check_type ws2tcpip.h socklen_t
5673         check_type ws2tcpip.h "struct addrinfo"
5674         check_type ws2tcpip.h "struct group_source_req"
5675         check_type ws2tcpip.h "struct ip_mreq_source"
5676         check_type ws2tcpip.h "struct ipv6_mreq"
5677         check_type winsock2.h "struct pollfd"
5678         check_struct winsock2.h "struct sockaddr" sa_len
5679         check_type ws2tcpip.h "struct sockaddr_in6"
5680         check_type ws2tcpip.h "struct sockaddr_storage"
5681     else
5682         disable network
5683     fi
5684 fi
5685
5686 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5687 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5688 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5689 check_builtin sarestart signal.h "SA_RESTART"
5690 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5691 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5692 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5693 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5694 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5695
5696 case "$custom_allocator" in
5697     jemalloc)
5698         # jemalloc by default does not use a prefix
5699         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5700     ;;
5701     tcmalloc)
5702         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5703         malloc_prefix=tc_
5704     ;;
5705 esac
5706
5707 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5708 check_func  ${malloc_prefix}memalign            && enable memalign
5709 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5710
5711 check_func  access
5712 check_func_headers stdlib.h arc4random
5713 check_func_headers time.h clock_gettime ||
5714     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5715 check_func  fcntl
5716 check_func  fork
5717 check_func  gethrtime
5718 check_func  getopt
5719 check_func  getrusage
5720 check_func  gettimeofday
5721 check_func  isatty
5722 check_func  mach_absolute_time
5723 check_func  mkstemp
5724 check_func  mmap
5725 check_func  mprotect
5726 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5727 check_func_headers time.h nanosleep ||
5728     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5729 check_func  sched_getaffinity
5730 check_func  setrlimit
5731 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5732 check_func  strerror_r
5733 check_func  sysconf
5734 check_func  sysctl
5735 check_func  usleep
5736
5737 check_func_headers conio.h kbhit
5738 check_func_headers io.h setmode
5739 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5740 check_func_headers stdlib.h getenv
5741 check_func_headers sys/stat.h lstat
5742
5743 check_func_headers windows.h GetProcessAffinityMask
5744 check_func_headers windows.h GetProcessTimes
5745 check_func_headers windows.h GetSystemTimeAsFileTime
5746 check_func_headers windows.h LoadLibrary
5747 check_func_headers windows.h MapViewOfFile
5748 check_func_headers windows.h PeekNamedPipe
5749 check_func_headers windows.h SetConsoleTextAttribute
5750 check_func_headers windows.h SetConsoleCtrlHandler
5751 check_func_headers windows.h Sleep
5752 check_func_headers windows.h VirtualAlloc
5753 check_struct windows.h "CONDITION_VARIABLE" Ptr
5754 check_func_headers glob.h glob
5755 enabled xlib &&
5756     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5757
5758 check_header d3d11.h
5759 check_header direct.h
5760 check_header dirent.h
5761 check_header dlfcn.h
5762 check_header dxgidebug.h
5763 check_header dxva.h
5764 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5765 check_header io.h
5766 check_header libcrystalhd/libcrystalhd_if.h
5767 check_header mach/mach_time.h
5768 check_header malloc.h
5769 check_header net/udplite.h
5770 check_header poll.h
5771 check_header sys/mman.h
5772 check_header sys/param.h
5773 check_header sys/resource.h
5774 check_header sys/select.h
5775 check_header sys/time.h
5776 check_header sys/un.h
5777 check_header termios.h
5778 check_header unistd.h
5779 check_header valgrind/valgrind.h
5780 check_header VideoDecodeAcceleration/VDADecoder.h
5781 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5782 check_header windows.h
5783 check_header X11/extensions/XvMClib.h
5784 check_header asm/types.h
5785
5786 # it seems there are versions of clang in some distros that try to use the
5787 # gcc headers, which explodes for stdatomic
5788 # so we also check that atomics actually work here
5789 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5790
5791 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5792 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5793 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5794 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5795
5796 enabled appkit       && check_apple_framework AppKit
5797 enabled audiotoolbox && check_apple_framework AudioToolbox
5798 enabled avfoundation && check_apple_framework AVFoundation
5799 enabled coreimage    && check_apple_framework CoreImage
5800 enabled videotoolbox && check_apple_framework VideoToolbox
5801
5802 enabled avfoundation && {
5803     check_lib avfoundation CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5804     check_lib avfoundation ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5805
5806 enabled videotoolbox && {
5807     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5808     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5809 }
5810
5811 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5812
5813 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5814 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5815 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5816 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5817 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5818
5819 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5820 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5821 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5822 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5823 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5824 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5825 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5826 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5827 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5828
5829 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5830
5831 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5832
5833 if ! disabled w32threads && ! enabled pthreads; then
5834     check_func_headers "windows.h process.h" _beginthreadex &&
5835         enable w32threads || disable w32threads
5836     if ! enabled w32threads && enabled winrt; then
5837         check_func_headers "windows.h" CreateThread &&
5838             enable w32threads || disable w32threads
5839     fi
5840 fi
5841
5842 # check for some common methods of building with pthread support
5843 # do this before the optional library checks as some of them require pthreads
5844 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5845     if check_lib pthreads pthread.h pthread_join   -pthread &&
5846        check_lib pthreads pthread.h pthread_create -pthread; then
5847         add_cflags -pthread
5848     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5849          check_lib pthreads pthread.h pthread_create -pthreads; then
5850         add_cflags -pthreads
5851     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5852          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5853         add_cflags -ldl -pthread
5854     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5855          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5856         :
5857     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5858          check_lib pthreads pthread.h pthread_create -lpthread; then
5859         :
5860     elif check_func pthread_join && check_func pthread_create; then
5861         enable pthreads
5862     fi
5863     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5864 fi
5865
5866
5867 if enabled pthreads; then
5868   check_func pthread_cancel
5869 fi
5870
5871 enabled pthreads &&
5872     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5873
5874 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5875 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5876 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5877
5878 # On some systems dynamic loading requires no extra linker flags
5879 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5880
5881 check_lib libm math.h sin -lm && LIBM="-lm"
5882
5883 atan2f_args=2
5884 copysign_args=2
5885 hypot_args=2
5886 ldexpf_args=2
5887 powf_args=2
5888
5889 for func in $MATH_FUNCS; do
5890     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5891 done
5892
5893 for func in $COMPLEX_FUNCS; do
5894     eval check_complexfunc $func \${${func}_args:-1}
5895 done
5896
5897 # these are off by default, so fail if requested and not available
5898 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5899 enabled cuvid             && { enabled cuda ||
5900                                die "ERROR: CUVID requires CUDA"; }
5901 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5902 enabled decklink          && { require_header DeckLinkAPI.h &&
5903                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5904 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5905 enabled frei0r            && require_header frei0r.h
5906 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5907 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5908 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5909 enabled ladspa            && require_header ladspa.h
5910 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5911 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5912 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5913 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5914 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5915                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5916                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5917 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5918 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5919 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5920 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5921                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5922                                  warn "using libfdk without pkg-config"; } }
5923 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"
5924 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5925 enabled fontconfig        && enable libfontconfig
5926 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5927 enabled libfreetype       && require_pkg_config libfreetype2 freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5928 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5929 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5930                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5931 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5932                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5933                                done || die "ERROR: libgsm not found"; }
5934 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5935 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5936 # While it may appear that require is being used as a pkg-config
5937 # fallback for libmfx, it is actually being used to detect a different
5938 # installation route altogether.  If libmfx is installed via the Intel
5939 # Media SDK or Intel Media Server Studio, these don't come with
5940 # pkg-config support.  Instead, users should make sure that the build
5941 # can find the libraries and headers through other means.
5942 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5943                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5944 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5945 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5946 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5947 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5948                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5949                                die "ERROR: libnpp not found"; }
5950 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5951 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5952 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5953                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5954                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5955                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5956 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5957 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.3/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5958                                check_lib libopenjpeg openjpeg-2.3/openjpeg.h opj_version -lopenjp2 ||
5959                                { check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5960                                check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 ||
5961                                { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5962                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5963                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5964                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5965                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5966                                die "ERROR: libopenjpeg not found"; }
5967 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5968 enabled libopus           && {
5969     enabled libopus_decoder && {
5970         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5971     }
5972     enabled libopus_encoder && {
5973         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5974     }
5975 }
5976 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5977 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5978 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5979 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5980 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5981 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5982                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5983 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5984 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5985 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5986 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
5987 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5988 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5989 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5990                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5991                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5992 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5993 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5994 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5995 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5996 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5997                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5998
5999 enabled libvpx            && {
6000     enabled libvpx_vp8_decoder && {
6001         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6002             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6003                 die "ERROR: libvpx decoder version must be >=0.9.1";
6004     }
6005     enabled libvpx_vp8_encoder && {
6006         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6007             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6008                 die "ERROR: libvpx encoder version must be >=0.9.7";
6009     }
6010     enabled libvpx_vp9_decoder && {
6011         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6012             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6013     }
6014     enabled libvpx_vp9_encoder && {
6015         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6016             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6017     }
6018     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6019         die "libvpx enabled but no supported decoders found"
6020     fi
6021 }
6022
6023 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6024 enabled libwebp           && {
6025     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6026     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6027 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6028                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6029                                  warn "using libx264 without pkg-config"; } } &&
6030                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6031                              { check_cpp_condition x264.h "X264_MPEG2" &&
6032                                enable libx262; }
6033 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6034                              require_cpp_condition x265.h "X265_BUILD >= 68"
6035 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
6036 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6037 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6038 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6039 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
6040                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6041                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6042 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6043 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6044 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6045                                { ! enabled cross_compile &&
6046                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6047                                  add_ldflags -L/opt/vc/lib/ &&
6048                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6049                                die "ERROR: mmal not found" &&
6050                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6051 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6052                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6053                                die "ERROR: openal not found"; } &&
6054                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6055                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6056 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6057                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6058                                die "ERROR: opencl not found"; } &&
6059                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6060                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6061                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6062 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6063                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6064                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6065                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6066                                die "ERROR: opengl not found."
6067                              }
6068 enabled omx_rpi           && { check_header OMX_Core.h ||
6069                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6070                                die "ERROR: OpenMAX IL headers not found"; }
6071 enabled omx               && require_header OMX_Core.h
6072 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6073                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6074                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6075                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6076                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6077                                die "ERROR: openssl not found"; }
6078 enabled rkmpp             && { { require_pkg_config rockchip_mpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6079                                  die "ERROR : Rockchip MPP was not found."; } &&
6080                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6081                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6082                                { enabled libdrm ||
6083                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6084                              }
6085
6086 if enabled gcrypt; then
6087     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6088     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6089         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6090         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6091         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6092             die "ERROR: gcrypt not found"
6093         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
6094     else
6095         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6096     fi
6097 fi
6098
6099 if enabled sdl2; then
6100     SDL2_CONFIG="${cross_prefix}sdl2-config"
6101     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6102         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6103             disable sdl2
6104     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6105         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6106         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6107         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6108         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6109         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6110             enable sdl2
6111     fi
6112     if test $target_os = "mingw32"; then
6113         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6114     fi
6115 fi
6116 enabled sdl2 && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags) && add_extralibs $sdl2_extralibs
6117
6118 if enabled decklink; then
6119     case $target_os in
6120         mingw32*|mingw64*|win32|win64)
6121             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6122             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6123             ;;
6124     esac
6125 fi
6126
6127 enabled securetransport &&
6128     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6129     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6130         disable securetransport
6131
6132 enabled schannel &&
6133     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6134     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6135     add_extralibs -lsecur32 ||
6136         disable schannel
6137
6138 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6139 enabled makeinfo \
6140     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6141     && enable makeinfo_html || disable makeinfo_html
6142 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6143 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6144 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6145 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6146
6147 # check V4L2 codecs available in the API
6148 check_header linux/fb.h
6149 check_header linux/videodev2.h
6150 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6151 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6152 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6153 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6154 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6155 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6156 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6157 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6158 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6159 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6160 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6161
6162 check_header sys/videoio.h
6163 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6164
6165 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6166 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6167 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6168 # w32api 3.12 had it defined wrong
6169 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6170
6171 check_type "dshow.h" IBaseFilter
6172
6173 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6174 { check_header dev/bktr/ioctl_meteor.h &&
6175   check_header dev/bktr/ioctl_bt848.h; } ||
6176 { check_header machine/ioctl_meteor.h &&
6177   check_header machine/ioctl_bt848.h; } ||
6178 { check_header dev/video/meteor/ioctl_meteor.h &&
6179   check_header dev/video/bktr/ioctl_bt848.h; } ||
6180 check_header dev/ic/bt8xx.h
6181
6182 if check_struct sys/soundcard.h audio_buf_info bytes; then
6183     enable_safe sys/soundcard.h
6184 else
6185     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6186     #include <sys/soundcard.h>
6187     audio_buf_info abc;
6188 EOF
6189 fi
6190 check_header soundcard.h
6191
6192 enabled alsa && check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6193
6194 enabled jack && check_lib jack jack/jack.h jack_client_open -ljack &&
6195     check_func jack_port_get_latency_range -ljack
6196
6197 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6198
6199 if enabled libcdio; then
6200     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6201     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6202     die "ERROR: No usable libcdio/cdparanoia found"
6203 fi
6204
6205 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6206     disable libxcb_shm libxcb_shape libxcb_xfixes
6207
6208 if enabled libxcb; then
6209     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6210     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6211     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6212
6213     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6214     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6215 fi
6216
6217 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6218
6219 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6220 # the desktop api partition
6221 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6222 #ifdef WINAPI_FAMILY
6223 #include <winapifamily.h>
6224 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6225 #error desktop, not uwp
6226 #else
6227 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6228 #endif
6229 #else
6230 #error no family set
6231 #endif
6232 EOF
6233
6234 enabled vaapi &&
6235     check_lib vaapi va/va.h vaInitialize -lva
6236
6237 enabled vaapi &&
6238     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6239     disable vaapi
6240
6241 enabled vaapi &&
6242     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6243
6244 enabled vaapi &&
6245     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6246
6247 enabled vaapi &&
6248     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6249     enable vaapi_1
6250
6251 enabled vdpau &&
6252     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6253     disable vdpau
6254
6255 enabled vdpau &&
6256     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6257
6258 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6259
6260 if enabled x86; then
6261     case $target_os in
6262         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6263             ;;
6264         *)
6265             disable cuda cuvid nvenc
6266             ;;
6267     esac
6268 else
6269     disable cuda cuvid nvenc
6270 fi
6271
6272 enabled nvenc &&
6273     check_cc -I$source_path <<EOF || disable nvenc
6274 #include "compat/nvenc/nvEncodeAPI.h"
6275 NV_ENCODE_API_FUNCTION_LIST flist;
6276 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6277 int main(void) { return 0; }
6278 EOF
6279
6280 # Funny iconv installations are not unusual, so check it after all flags have been set
6281 if enabled libc_iconv; then
6282     check_func_headers iconv.h iconv
6283 elif enabled iconv; then
6284     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6285 fi
6286
6287 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6288
6289 # add some useful compiler flags if supported
6290 check_cflags -Wdeclaration-after-statement
6291 check_cflags -Wall
6292 check_cflags -Wdisabled-optimization
6293 check_cflags -Wpointer-arith
6294 check_cflags -Wredundant-decls
6295 check_cflags -Wwrite-strings
6296 check_cflags -Wtype-limits
6297 check_cflags -Wundef
6298 check_cflags -Wmissing-prototypes
6299 check_cflags -Wno-pointer-to-int-cast
6300 check_cflags -Wstrict-prototypes
6301 check_cflags -Wempty-body
6302
6303 if enabled extra_warnings; then
6304     check_cflags -Wcast-qual
6305     check_cflags -Wextra
6306     check_cflags -Wpedantic
6307 fi
6308
6309 check_disable_warning(){
6310     warning_flag=-W${1#-Wno-}
6311     test_cflags $warning_flag && add_cflags $1
6312 }
6313
6314 check_disable_warning -Wno-parentheses
6315 check_disable_warning -Wno-switch
6316 check_disable_warning -Wno-format-zero-length
6317 check_disable_warning -Wno-pointer-sign
6318 check_disable_warning -Wno-unused-const-variable
6319 check_disable_warning -Wno-bool-operation
6320
6321 check_disable_warning_headers(){
6322     warning_flag=-W${1#-Wno-}
6323     test_cflags $warning_flag && add_cflags_headers $1
6324 }
6325
6326 check_disable_warning_headers -Wno-deprecated-declarations
6327 check_disable_warning_headers -Wno-unused-variable
6328
6329 check_cc <<EOF && enable blocks_extension
6330 void (^block)(void);
6331 EOF
6332
6333 # add some linker flags
6334 check_ldflags -Wl,--warn-common
6335 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6336 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6337 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6338 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6339
6340 # add some strip flags
6341 check_stripflags -x
6342
6343 enabled neon_clobber_test &&
6344     check_ldflags -Wl,--wrap,avcodec_open2              \
6345                   -Wl,--wrap,avcodec_decode_audio4      \
6346                   -Wl,--wrap,avcodec_decode_video2      \
6347                   -Wl,--wrap,avcodec_decode_subtitle2   \
6348                   -Wl,--wrap,avcodec_encode_audio2      \
6349                   -Wl,--wrap,avcodec_encode_video2      \
6350                   -Wl,--wrap,avcodec_encode_subtitle    \
6351                   -Wl,--wrap,avcodec_send_packet        \
6352                   -Wl,--wrap,avcodec_receive_packet     \
6353                   -Wl,--wrap,avcodec_send_frame         \
6354                   -Wl,--wrap,avcodec_receive_frame      \
6355                   -Wl,--wrap,swr_convert                \
6356                   -Wl,--wrap,avresample_convert ||
6357     disable neon_clobber_test
6358
6359 enabled xmm_clobber_test &&
6360     check_ldflags -Wl,--wrap,avcodec_open2              \
6361                   -Wl,--wrap,avcodec_decode_audio4      \
6362                   -Wl,--wrap,avcodec_decode_video2      \
6363                   -Wl,--wrap,avcodec_decode_subtitle2   \
6364                   -Wl,--wrap,avcodec_encode_audio2      \
6365                   -Wl,--wrap,avcodec_encode_video2      \
6366                   -Wl,--wrap,avcodec_encode_subtitle    \
6367                   -Wl,--wrap,avcodec_send_packet        \
6368                   -Wl,--wrap,avcodec_receive_packet     \
6369                   -Wl,--wrap,avcodec_send_frame         \
6370                   -Wl,--wrap,avcodec_receive_frame      \
6371                   -Wl,--wrap,swr_convert                \
6372                   -Wl,--wrap,avresample_convert         \
6373                   -Wl,--wrap,sws_scale ||
6374     disable xmm_clobber_test
6375
6376 check_ld "cc" <<EOF && enable proper_dce
6377 extern const int array[512];
6378 static inline int func(void) { return array[0]; }
6379 int main(void) { return 0; }
6380 EOF
6381
6382 if enabled proper_dce; then
6383     echo "X { local: *; };" > $TMPV
6384     if test_ldflags -Wl,${version_script},$TMPV; then
6385         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6386         check_cc <<EOF && enable symver_asm_label
6387 void ff_foo(void) __asm__ ("av_foo@VERSION");
6388 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6389 EOF
6390         check_cc <<EOF && enable symver_gnu_asm
6391 __asm__(".symver ff_foo,av_foo@VERSION");
6392 void ff_foo(void) {}
6393 EOF
6394     fi
6395 fi
6396
6397 if [ -z "$optflags" ]; then
6398     if enabled small; then
6399         optflags=$cflags_size
6400     elif enabled optimizations; then
6401         optflags=$cflags_speed
6402     else
6403         optflags=$cflags_noopt
6404     fi
6405 fi
6406
6407 if [ -z "$nvccflags" ]; then
6408     nvccflags=$nvccflags_default
6409 fi
6410
6411 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6412     nvccflags="$nvccflags -m64"
6413 else
6414     nvccflags="$nvccflags -m32"
6415 fi
6416
6417 check_optflags(){
6418     check_cflags "$@"
6419     enabled lto && check_ldflags "$@"
6420 }
6421
6422 check_optflags $optflags
6423 check_optflags -fno-math-errno
6424 check_optflags -fno-signed-zeros
6425
6426 if enabled lto; then
6427     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6428     check_cflags  -flto
6429     check_ldflags -flto $cpuflags
6430     disable inline_asm_direct_symbol_refs
6431 fi
6432
6433 enabled ftrapv && check_cflags -ftrapv
6434
6435 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6436 int x;
6437 EOF
6438
6439
6440 if enabled icc; then
6441     # Just warnings, no remarks
6442     check_cflags -w1
6443     # -wd: Disable following warnings
6444     # 144, 167, 556: -Wno-pointer-sign
6445     # 188: enumerated type mixed with another type
6446     # 1292: attribute "foo" ignored
6447     # 1419: external declaration in primary source file
6448     # 10006: ignoring unknown option -fno-signed-zeros
6449     # 10148: ignoring unknown option -Wno-parentheses
6450     # 10156: ignoring option '-W'; no argument required
6451     # 13200: No EMMS instruction before call to function
6452     # 13203: No EMMS instruction before return from function
6453     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6454     # 11030: Warning unknown option --as-needed
6455     # 10156: ignoring option '-export'; no argument required
6456     check_ldflags -wd10156,11030
6457     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6458     enable ebp_available
6459     # The test above does not test linking
6460     enabled lto && disable symver_asm_label
6461     if enabled x86_32; then
6462         icc_version=$($cc -dumpversion)
6463         test ${icc_version%%.*} -ge 11 &&
6464             check_cflags -falign-stack=maintain-16-byte ||
6465             disable aligned_stack
6466     fi
6467 elif enabled ccc; then
6468     # disable some annoying warnings
6469     add_cflags -msg_disable bitnotint
6470     add_cflags -msg_disable mixfuncvoid
6471     add_cflags -msg_disable nonstandcast
6472     add_cflags -msg_disable unsupieee
6473 elif enabled gcc; then
6474     check_optflags -fno-tree-vectorize
6475     check_cflags -Werror=format-security
6476     check_cflags -Werror=implicit-function-declaration
6477     check_cflags -Werror=missing-prototypes
6478     check_cflags -Werror=return-type
6479     check_cflags -Werror=vla
6480     check_cflags -Wformat
6481     check_cflags -fdiagnostics-color=auto
6482     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6483 elif enabled llvm_gcc; then
6484     check_cflags -mllvm -stack-alignment=16
6485 elif enabled clang; then
6486     check_cflags -mllvm -stack-alignment=16
6487     check_cflags -mstack-alignment=16
6488     check_cflags -Qunused-arguments
6489     check_cflags -Werror=implicit-function-declaration
6490     check_cflags -Werror=missing-prototypes
6491     check_cflags -Werror=return-type
6492 elif enabled cparser; then
6493     add_cflags -Wno-missing-variable-declarations
6494     add_cflags -Wno-empty-statement
6495 elif enabled armcc; then
6496     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6497     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6498     # 2523: use of inline assembly is deprecated
6499     add_cflags -W${armcc_opt},--diag_suppress=2523
6500     add_cflags -W${armcc_opt},--diag_suppress=1207
6501     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6502     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6503     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6504     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6505 elif enabled tms470; then
6506     add_cflags -pds=824 -pds=837
6507     disable inline_asm
6508 elif enabled pathscale; then
6509     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6510 elif enabled_any msvc icl; then
6511     enabled x86_32 && disable aligned_stack
6512     enabled_all x86_32 debug && add_cflags -Oy-
6513     enabled debug && add_ldflags -debug
6514     enable pragma_deprecated
6515     if enabled icl; then
6516         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6517         # (correctly) on icl 13.x.
6518         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6519             add_cflags -Qansi-alias
6520         # Some inline asm is not compilable in debug
6521         if enabled debug; then
6522             disable ebp_available
6523             disable ebx_available
6524         fi
6525     fi
6526     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6527     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6528     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6529     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6530     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6531     # MSVC 2013 and newer can handle it fine.
6532     # If this declspec fails, force including stdlib.h before the restrict redefinition
6533     # happens in config.h.
6534     if [ $_restrict != restrict ]; then
6535         check_cc <<EOF || add_cflags -FIstdlib.h
6536 __declspec($_restrict) void* foo(int);
6537 EOF
6538     fi
6539     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6540     # Issue has been fixed in MSVC v19.00.24218.
6541     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6542         check_cflags -d2SSAOptimizer-
6543     # enable utf-8 source processing on VS2015 U2 and newer
6544     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6545         add_cflags -utf-8
6546 fi
6547
6548 for pfx in "" host_; do
6549     varname=${pfx%_}cc_type
6550     eval "type=\$$varname"
6551     if [ "$type" = "msvc" ]; then
6552         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6553 static inline int foo(int a) { return a; }
6554 EOF
6555     fi
6556 done
6557
6558 case $as_type in
6559     clang)
6560         add_asflags -Qunused-arguments
6561     ;;
6562 esac
6563
6564 case $ld_type in
6565     clang)
6566         check_ldflags -Qunused-arguments
6567     ;;
6568 esac
6569
6570 case $target_os in
6571     osf1)
6572         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6573     ;;
6574 esac
6575
6576 enable frame_thread_encoder
6577
6578 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6579
6580 check_deps $CONFIG_LIST       \
6581            $CONFIG_EXTRA      \
6582            $HAVE_LIST         \
6583            $ALL_COMPONENTS    \
6584
6585 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"
6586
6587
6588 if test $target_os = "haiku"; then
6589     disable memalign
6590     disable posix_memalign
6591 fi
6592
6593 # add_dep lib dep
6594 # -> enable ${lib}_deps_${dep}
6595 # -> add $dep to ${lib}_deps only once
6596 add_dep() {
6597     lib=$1
6598     dep=$2
6599     enabled "${lib}_deps_${dep}" && return 0
6600     enable  "${lib}_deps_${dep}"
6601     prepend "${lib}_deps" $dep
6602 }
6603
6604 # merge deps lib components
6605 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6606 merge_deps() {
6607     lib=$1
6608     shift
6609     for comp in $*; do
6610         enabled $comp || continue
6611         eval "dep=\"\$${comp}_deps\""
6612         for d in $dep; do
6613             add_dep $lib $d
6614         done
6615     done
6616 }
6617
6618 merge_deps libavfilter $FILTER_LIST
6619
6620 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6621
6622 for thread in $THREADS_LIST; do
6623     if enabled $thread; then
6624         test -n "$thread_type" &&
6625             die "ERROR: Only one thread type must be selected." ||
6626             thread_type="$thread"
6627     fi
6628 done
6629
6630 if disabled stdatomic_h; then
6631     if enabled atomics_gcc; then
6632         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6633     elif enabled atomics_win32; then
6634         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6635     elif enabled atomics_suncc; then
6636         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6637     elif enabled pthreads; then
6638         add_compat atomics/pthread/stdatomic.o
6639         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6640     else
6641         enabled threads && die "Threading is enabled, but no atomics are available"
6642         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6643     fi
6644 fi
6645
6646 # Check if requested libraries were found.
6647 for lib in $AUTODETECT_LIBS; do
6648     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6649 done
6650
6651 enabled zlib && add_cppflags -DZLIB_CONST
6652
6653 # conditional library dependencies, in linking order
6654 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6655 enabled afir_filter         && prepend avfilter_deps "avcodec"
6656 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6657 enabled aresample_filter    && prepend avfilter_deps "swresample"
6658 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6659 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6660 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6661 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6662 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6663 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6664 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6665 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6666 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6667 enabled pan_filter          && prepend avfilter_deps "swresample"
6668 enabled pp_filter           && prepend avfilter_deps "postproc"
6669 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6670 enabled resample_filter && prepend avfilter_deps "avresample"
6671 enabled sab_filter          && prepend avfilter_deps "swscale"
6672 enabled scale_filter    && prepend avfilter_deps "swscale"
6673 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6674 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6675 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6676 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6677 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6678 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6679 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6680 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6681 enabled spp_filter          && prepend avfilter_deps "avcodec"
6682 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6683 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6684 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6685
6686 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6687
6688 enabled opus_decoder    && prepend avcodec_deps "swresample"
6689
6690 expand_deps(){
6691     lib_deps=${1}_deps
6692     eval "deps=\$$lib_deps"
6693     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6694     unique $lib_deps
6695 }
6696
6697 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6698 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6699
6700 map 'expand_deps $v' $LIBRARY_LIST
6701
6702 license="LGPL version 2.1 or later"
6703 if enabled nonfree; then
6704     license="nonfree and unredistributable"
6705 elif enabled gplv3; then
6706     license="GPL version 3 or later"
6707 elif enabled lgplv3; then
6708     license="LGPL version 3 or later"
6709 elif enabled gpl; then
6710     license="GPL version 2 or later"
6711 fi
6712
6713 if test "$quiet" != "yes"; then
6714
6715 echo "install prefix            $prefix"
6716 echo "source path               $source_path"
6717 echo "C compiler                $cc"
6718 echo "C library                 $libc_type"
6719 if test "$host_cc" != "$cc"; then
6720     echo "host C compiler           $host_cc"
6721     echo "host C library            $host_libc_type"
6722 fi
6723 echo "ARCH                      $arch ($cpu)"
6724 if test "$build_suffix" != ""; then
6725     echo "build suffix              $build_suffix"
6726 fi
6727 if test "$progs_suffix" != ""; then
6728     echo "progs suffix              $progs_suffix"
6729 fi
6730 if test "$extra_version" != ""; then
6731     echo "version string suffix     $extra_version"
6732 fi
6733 echo "big-endian                ${bigendian-no}"
6734 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6735 if enabled x86; then
6736     echo "standalone assembly       ${x86asm-no}"
6737     echo "x86 assembler             ${x86asmexe}"
6738     echo "MMX enabled               ${mmx-no}"
6739     echo "MMXEXT enabled            ${mmxext-no}"
6740     echo "3DNow! enabled            ${amd3dnow-no}"
6741     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6742     echo "SSE enabled               ${sse-no}"
6743     echo "SSSE3 enabled             ${ssse3-no}"
6744     echo "AESNI enabled             ${aesni-no}"
6745     echo "AVX enabled               ${avx-no}"
6746     echo "AVX2 enabled              ${avx2-no}"
6747     echo "XOP enabled               ${xop-no}"
6748     echo "FMA3 enabled              ${fma3-no}"
6749     echo "FMA4 enabled              ${fma4-no}"
6750     echo "i686 features enabled     ${i686-no}"
6751     echo "CMOV is fast              ${fast_cmov-no}"
6752     echo "EBX available             ${ebx_available-no}"
6753     echo "EBP available             ${ebp_available-no}"
6754 fi
6755 if enabled aarch64; then
6756     echo "NEON enabled              ${neon-no}"
6757     echo "VFP enabled               ${vfp-no}"
6758 fi
6759 if enabled arm; then
6760     echo "ARMv5TE enabled           ${armv5te-no}"
6761     echo "ARMv6 enabled             ${armv6-no}"
6762     echo "ARMv6T2 enabled           ${armv6t2-no}"
6763     echo "VFP enabled               ${vfp-no}"
6764     echo "NEON enabled              ${neon-no}"
6765     echo "THUMB enabled             ${thumb-no}"
6766 fi
6767 if enabled mips; then
6768     echo "MIPS FPU enabled          ${mipsfpu-no}"
6769     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6770     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6771     echo "MIPS MSA enabled          ${msa-no}"
6772     echo "LOONGSON MMI enabled      ${mmi-no}"
6773 fi
6774 if enabled ppc; then
6775     echo "AltiVec enabled           ${altivec-no}"
6776     echo "VSX enabled               ${vsx-no}"
6777     echo "POWER8 enabled            ${power8-no}"
6778     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6779     echo "dcbzl available           ${dcbzl-no}"
6780 fi
6781 echo "debug symbols             ${debug-no}"
6782 echo "strip symbols             ${stripping-no}"
6783 echo "optimize for size         ${small-no}"
6784 echo "optimizations             ${optimizations-no}"
6785 echo "static                    ${static-no}"
6786 echo "shared                    ${shared-no}"
6787 echo "postprocessing support    ${postproc-no}"
6788 echo "network support           ${network-no}"
6789 echo "threading support         ${thread_type-no}"
6790 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6791 echo "texi2html enabled         ${texi2html-no}"
6792 echo "perl enabled              ${perl-no}"
6793 echo "pod2man enabled           ${pod2man-no}"
6794 echo "makeinfo enabled          ${makeinfo-no}"
6795 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6796 test -n "$random_seed" &&
6797     echo "random seed               ${random_seed}"
6798 echo
6799
6800 echo "External libraries:"
6801 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6802 echo
6803
6804 echo "External libraries providing hardware acceleration:"
6805 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6806 echo
6807
6808 echo "Libraries:"
6809 print_enabled '' $LIBRARY_LIST | print_in_columns
6810 echo
6811
6812 echo "Programs:"
6813 print_enabled '' $PROGRAM_LIST | print_in_columns
6814 echo
6815
6816 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6817     echo "Enabled ${type}s:"
6818     eval list=\$$(toupper $type)_LIST
6819     print_enabled '_*' $list | print_in_columns
6820     echo
6821 done
6822
6823 if test -n "$ignore_tests"; then
6824     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6825     echo "Ignored FATE tests:"
6826     echo $ignore_tests | print_in_columns
6827     echo
6828 fi
6829
6830 echo "License: $license"
6831
6832 echo "Creating configuration files ..."
6833
6834 fi # test "$quiet" != "yes"
6835
6836 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6837
6838 enabled stripping || strip="echo skipping strip"
6839 enabled stripping || striptype=""
6840
6841 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6842
6843 cat > ffbuild/config.mak <<EOF
6844 # Automatically generated by configure - do not modify!
6845 ifndef FFMPEG_CONFIG_MAK
6846 FFMPEG_CONFIG_MAK=1
6847 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6848 prefix=$prefix
6849 LIBDIR=\$(DESTDIR)$libdir
6850 SHLIBDIR=\$(DESTDIR)$shlibdir
6851 INCDIR=\$(DESTDIR)$incdir
6852 BINDIR=\$(DESTDIR)$bindir
6853 DATADIR=\$(DESTDIR)$datadir
6854 DOCDIR=\$(DESTDIR)$docdir
6855 MANDIR=\$(DESTDIR)$mandir
6856 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6857 INSTALL_NAME_DIR=$install_name_dir
6858 SRC_PATH=$source_path
6859 SRC_LINK=$source_link
6860 ifndef MAIN_MAKEFILE
6861 SRC_PATH:=\$(SRC_PATH:.%=..%)
6862 endif
6863 CC_IDENT=$cc_ident
6864 ARCH=$arch
6865 INTRINSICS=$intrinsics
6866 CC=$cc
6867 CXX=$cxx
6868 AS=$as
6869 OBJCC=$objcc
6870 LD=$ld
6871 DEPCC=$dep_cc
6872 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6873 DEPAS=$as
6874 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6875 X86ASM=$x86asmexe
6876 DEPX86ASM=$x86asmexe
6877 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6878 AR=$ar
6879 ARFLAGS=$arflags
6880 AR_O=$ar_o
6881 RANLIB=$ranlib
6882 STRIP=$strip
6883 STRIPTYPE=$striptype
6884 NVCC=$nvcc
6885 CP=cp -p
6886 LN_S=$ln_s
6887 CPPFLAGS=$CPPFLAGS
6888 CFLAGS=$CFLAGS
6889 CXXFLAGS=$CXXFLAGS
6890 OBJCFLAGS=$OBJCFLAGS
6891 ASFLAGS=$ASFLAGS
6892 NVCCFLAGS=$nvccflags
6893 AS_C=$AS_C
6894 AS_O=$AS_O
6895 OBJCC_C=$OBJCC_C
6896 OBJCC_E=$OBJCC_E
6897 OBJCC_O=$OBJCC_O
6898 CC_C=$CC_C
6899 CC_E=$CC_E
6900 CC_O=$CC_O
6901 CXX_C=$CXX_C
6902 CXX_O=$CXX_O
6903 NVCC_C=$NVCC_C
6904 NVCC_O=$NVCC_O
6905 LD_O=$LD_O
6906 X86ASM_O=$X86ASM_O
6907 LD_LIB=$LD_LIB
6908 LD_PATH=$LD_PATH
6909 DLLTOOL=$dlltool
6910 WINDRES=$windres
6911 DEPWINDRES=$dep_cc
6912 DOXYGEN=$doxygen
6913 LDFLAGS=$LDFLAGS
6914 LDEXEFLAGS=$LDEXEFLAGS
6915 LDLIBFLAGS=$LDLIBFLAGS
6916 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6917 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6918 X86ASMFLAGS=$X86ASMFLAGS
6919 BUILDSUF=$build_suffix
6920 PROGSSUF=$progs_suffix
6921 FULLNAME=$FULLNAME
6922 LIBPREF=$LIBPREF
6923 LIBSUF=$LIBSUF
6924 LIBNAME=$LIBNAME
6925 SLIBPREF=$SLIBPREF
6926 SLIBSUF=$SLIBSUF
6927 EXESUF=$EXESUF
6928 EXTRA_VERSION=$extra_version
6929 CCDEP=$CCDEP
6930 CXXDEP=$CXXDEP
6931 CCDEP_FLAGS=$CCDEP_FLAGS
6932 ASDEP=$ASDEP
6933 ASDEP_FLAGS=$ASDEP_FLAGS
6934 X86ASMDEP=$X86ASMDEP
6935 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6936 CC_DEPFLAGS=$CC_DEPFLAGS
6937 AS_DEPFLAGS=$AS_DEPFLAGS
6938 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6939 HOSTCC=$host_cc
6940 HOSTLD=$host_ld
6941 HOSTCFLAGS=$host_cflags
6942 HOSTCPPFLAGS=$host_cppflags
6943 HOSTEXESUF=$HOSTEXESUF
6944 HOSTLDFLAGS=$host_ldflags
6945 HOSTEXTRALIBS=$host_extralibs
6946 DEPHOSTCC=$host_cc
6947 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6948 HOSTCCDEP=$HOSTCCDEP
6949 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6950 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6951 HOSTCC_C=$HOSTCC_C
6952 HOSTCC_O=$HOSTCC_O
6953 HOSTLD_O=$HOSTLD_O
6954 TARGET_EXEC=$target_exec $target_exec_args
6955 TARGET_PATH=$target_path
6956 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6957 CFLAGS-ffplay=${sdl2_cflags}
6958 CFLAGS_HEADERS=$CFLAGS_HEADERS
6959 ZLIB=$($ldflags_filter -lz)
6960 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6961 EXTRALIBS=$extralibs
6962 COMPAT_OBJS=$compat_objs
6963 INSTALL=$install
6964 LIBTARGET=${LIBTARGET}
6965 SLIBNAME=${SLIBNAME}
6966 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6967 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6968 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6969 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6970 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6971 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6972 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6973 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6974 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6975 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6976 NOREDZONE_FLAGS=$noredzone_flags
6977 LIBFUZZER_PATH=$libfuzzer_path
6978 IGNORE_TESTS=$ignore_tests
6979 EOF
6980
6981 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6982
6983 print_program_extralibs(){
6984     eval "program_extralibs=\$${1}_extralibs"
6985     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6986 }
6987
6988 map 'print_program_extralibs $v' $PROGRAM_LIST
6989
6990 cat > $TMPH <<EOF
6991 /* Automatically generated by configure - do not modify! */
6992 #ifndef FFMPEG_CONFIG_H
6993 #define FFMPEG_CONFIG_H
6994 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6995 #define FFMPEG_LICENSE "$(c_escape $license)"
6996 #define CONFIG_THIS_YEAR 2017
6997 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6998 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6999 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7000 #define av_restrict $_restrict
7001 #define EXTERN_PREFIX "${extern_prefix}"
7002 #define EXTERN_ASM ${extern_prefix}
7003 #define BUILDSUF "$build_suffix"
7004 #define SLIBSUF "$SLIBSUF"
7005 #define HAVE_MMX2 HAVE_MMXEXT
7006 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7007 EOF
7008
7009 test -n "$assert_level" &&
7010     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7011
7012 test -n "$malloc_prefix" &&
7013     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7014
7015 if enabled x86asm; then
7016     append config_files $TMPASM
7017     printf '' >$TMPASM
7018 fi
7019
7020 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7021
7022
7023 mkdir -p doc
7024 mkdir -p tests
7025 mkdir -p tests/api
7026 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7027
7028 print_config ARCH_   "$config_files" $ARCH_LIST
7029 print_config HAVE_   "$config_files" $HAVE_LIST
7030 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7031                                      $CONFIG_EXTRA      \
7032                                      $ALL_COMPONENTS    \
7033
7034 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7035 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7036
7037 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7038 cp_if_changed $TMPH config.h
7039 touch ffbuild/.config
7040
7041 enabled x86asm && cp_if_changed $TMPASM config.asm
7042
7043 cat > $TMPH <<EOF
7044 /* Generated by ffconf */
7045 #ifndef AVUTIL_AVCONFIG_H
7046 #define AVUTIL_AVCONFIG_H
7047 EOF
7048
7049 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7050
7051 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7052
7053 cp_if_changed $TMPH libavutil/avconfig.h
7054
7055 # generate the lists of enabled components
7056 print_enabled_components(){
7057     file=$1
7058     struct_name=$2
7059     name=$3
7060     shift 3
7061     echo "static const $struct_name * const $name[] = {" > $TMPH
7062     for c in $*; do
7063         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7064     done
7065     echo "    NULL };" >> $TMPH
7066     cp_if_changed $TMPH $file
7067 }
7068
7069 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7070 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7071
7072 if test -n "$WARNINGS"; then
7073     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7074     enabled fatal_warnings && exit 1
7075 fi
7076
7077 # Settings for pkg-config files
7078
7079 cat > ffbuild/config.sh <<EOF
7080 # Automatically generated by configure - do not modify!
7081 shared=$shared
7082 build_suffix=$build_suffix
7083 prefix=$prefix
7084 libdir=$libdir
7085 incdir=$incdir
7086 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7087 source_path=${source_path}
7088 LIBPREF=${LIBPREF}
7089 LIBSUF=${LIBSUF}
7090
7091 extralibs_avutil="$LIBRT $LIBM"
7092 extralibs_avcodec="$extralibs"
7093 extralibs_avformat="$extralibs"
7094 extralibs_avdevice="$extralibs"
7095 extralibs_avfilter="$extralibs"
7096 extralibs_avresample="$LIBM"
7097 extralibs_postproc=""
7098 extralibs_swscale="$LIBM"
7099 extralibs_swresample="$LIBM $LIBSOXR"
7100 EOF
7101
7102 for lib in $LIBRARY_LIST; do
7103     lib_deps="$(eval echo \$${lib}_deps)"
7104     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7105 done