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
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl or libtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libass          enable libass subtitles rendering,
 222                            needed for subtitles and ass filter [no]
 223   --enable-libbluray       enable BluRay reading using libbluray [no]
 224   --enable-libbs2b         enable bs2b DSP library [no]
 225   --enable-libcaca         enable textual display using libcaca [no]
 226   --enable-libcelt         enable CELT decoding via libcelt [no]
 227   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 228   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 264                            if openssl or gnutls is not used [no]
 265   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 266   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 267   --enable-libvidstab      enable video stabilization using vid.stab [no]
 268   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 269   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 270   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 271                            native implementation exists [no]
 272   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 273   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 274   --enable-libwebp         enable WebP encoding via libwebp [no]
 275   --enable-libx264         enable H.264 encoding via x264 [no]
 276   --enable-libx265         enable HEVC encoding via x265 [no]
 277   --enable-libxavs         enable AVS encoding via xavs [no]
 278   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 279   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 280   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 281   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 282   --enable-libxvid         enable Xvid encoding via xvidcore,
 283                            native MPEG-4/Xvid encoder exists [no]
 284   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 285   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 286   --enable-libzmq          enable message passing via libzmq [no]
 287   --enable-libzvbi         enable teletext support via libzvbi [no]
 288   --enable-lv2             enable LV2 audio filtering [no]
 289   --disable-lzma           disable lzma [autodetect]
 290   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 291   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 292   --enable-mediacodec      enable Android MediaCodec support [no]
 293   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 294   --enable-openal          enable OpenAL 1.1 capture support [no]
 295   --enable-opencl          enable OpenCL processing [no]
 296   --enable-opengl          enable OpenGL rendering [no]
 297   --enable-openssl         enable openssl, needed for https support
 298                            if gnutls or libtls is not used [no]
 299   --disable-sndio          disable sndio support [autodetect]
 300   --disable-schannel       disable SChannel SSP, needed for TLS support on
 301                            Windows if openssl and gnutls are not used [autodetect]
 302   --disable-sdl2           disable sdl2 [autodetect]
 303   --disable-securetransport disable Secure Transport, needed for TLS support
 304                            on OSX if openssl and gnutls are not used [autodetect]
 305   --disable-xlib           disable xlib [autodetect]
 306   --disable-zlib           disable zlib [autodetect]
 307
 308   The following libraries provide various hardware acceleration features:
 309   --disable-amf            disable AMF video encoding code [autodetect]
 310   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 311   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 312   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 313   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 314   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 315   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 316   --enable-libdrm          enable DRM code (Linux) [no]
 317   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 318   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 319   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 320   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 321   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 322   --enable-omx             enable OpenMAX IL code [no]
 323   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 324   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 325   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 326   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 327   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 328   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 329
 330 Toolchain options:
 331   --arch=ARCH              select architecture [$arch]
 332   --cpu=CPU                select the minimum required CPU (affects
 333                            instruction selection, may crash on older CPUs)
 334   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 335   --progs-suffix=SUFFIX    program name suffix []
 336   --enable-cross-compile   assume a cross-compiler is used
 337   --sysroot=PATH           root of cross-build tree
 338   --sysinclude=PATH        location of cross-build system headers
 339   --target-os=OS           compiler targets OS [$target_os]
 340   --target-exec=CMD        command to run executables on target
 341   --target-path=DIR        path to view of build directory on target
 342   --target-samples=DIR     path to samples directory on target
 343   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 344   --toolchain=NAME         set tool defaults according to NAME
 345                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 346                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 347                            valgrind-massif, valgrind-memcheck,
 348                            msvc, icl, gcov, llvm-cov, hardened)
 349   --nm=NM                  use nm tool NM [$nm_default]
 350   --ar=AR                  use archive tool AR [$ar_default]
 351   --as=AS                  use assembler AS [$as_default]
 352   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 353   --strip=STRIP            use strip tool STRIP [$strip_default]
 354   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 355   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 356   --cc=CC                  use C compiler CC [$cc_default]
 357   --cxx=CXX                use C compiler CXX [$cxx_default]
 358   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 359   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 360   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 361   --ld=LD                  use linker LD [$ld_default]
 362   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 363   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 364   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 365   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 366   --host-cc=HOSTCC         use host C compiler HOSTCC
 367   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 368   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 369   --host-ld=HOSTLD         use host linker HOSTLD
 370   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 371   --host-libs=HLIBS        use libs HLIBS when linking for host
 372   --host-os=OS             compiler host OS [$target_os]
 373   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 374   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 375   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 376   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 377   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 378   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 379   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 380   --extra-version=STRING   version string suffix []
 381   --optflags=OPTFLAGS      override optimization-related compiler flags
 382   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 383   --build-suffix=SUFFIX    library name suffix []
 384   --enable-pic             build position-independent code
 385   --enable-thumb           compile for Thumb instruction set
 386   --enable-lto             use link-time optimization
 387   --env="ENV=override"     override the environment variables
 388
 389 Advanced options (experts only):
 390   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 391   --custom-allocator=NAME  use a supported custom allocator
 392   --disable-symver         disable symbol versioning
 393   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 394   --disable-safe-bitstream-reader
 395                            disable buffer boundary checking in bitreaders
 396                            (faster, but may crash)
 397   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 398
 399 Optimization options (experts only):
 400   --disable-asm            disable all assembly optimizations
 401   --disable-altivec        disable AltiVec optimizations
 402   --disable-vsx            disable VSX optimizations
 403   --disable-power8         disable POWER8 optimizations
 404   --disable-amd3dnow       disable 3DNow! optimizations
 405   --disable-amd3dnowext    disable 3DNow! extended optimizations
 406   --disable-mmx            disable MMX optimizations
 407   --disable-mmxext         disable MMXEXT optimizations
 408   --disable-sse            disable SSE optimizations
 409   --disable-sse2           disable SSE2 optimizations
 410   --disable-sse3           disable SSE3 optimizations
 411   --disable-ssse3          disable SSSE3 optimizations
 412   --disable-sse4           disable SSE4 optimizations
 413   --disable-sse42          disable SSE4.2 optimizations
 414   --disable-avx            disable AVX optimizations
 415   --disable-xop            disable XOP optimizations
 416   --disable-fma3           disable FMA3 optimizations
 417   --disable-fma4           disable FMA4 optimizations
 418   --disable-avx2           disable AVX2 optimizations
 419   --disable-avx512         disable AVX-512 optimizations
 420   --disable-aesni          disable AESNI optimizations
 421   --disable-armv5te        disable armv5te optimizations
 422   --disable-armv6          disable armv6 optimizations
 423   --disable-armv6t2        disable armv6t2 optimizations
 424   --disable-vfp            disable VFP optimizations
 425   --disable-neon           disable NEON optimizations
 426   --disable-inline-asm     disable use of inline assembly
 427   --disable-x86asm         disable use of standalone x86 assembly
 428   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 429   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 430   --disable-msa            disable MSA optimizations
 431   --disable-mipsfpu        disable floating point MIPS optimizations
 432   --disable-mmi            disable Loongson SIMD optimizations
 433   --disable-fast-unaligned consider unaligned accesses slow
 434
 435 Developer options (useful when working on FFmpeg itself):
 436   --disable-debug          disable debugging symbols
 437   --enable-debug=LEVEL     set the debug level [$debuglevel]
 438   --disable-optimizations  disable compiler optimizations
 439   --enable-extra-warnings  enable more compiler warnings
 440   --disable-stripping      disable stripping of executables and shared libraries
 441   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 442                            2 causes a slowdown at runtime.
 443   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 444   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 445                            leaks and errors, using the specified valgrind binary.
 446                            Cannot be combined with --target-exec
 447   --enable-ftrapv          Trap arithmetic overflows
 448   --samples=PATH           location of test samples for FATE, if not set use
 449                            \$FATE_SAMPLES at make invocation time.
 450   --enable-neon-clobber-test check NEON registers for clobbering (should be
 451                            used only for debugging purposes)
 452   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 453                            should be used only for debugging purposes)
 454   --enable-random          randomly enable/disable components
 455   --disable-random
 456   --enable-random=LIST     randomly enable/disable specific components or
 457   --disable-random=LIST    component groups. LIST is a comma-separated list
 458                            of NAME[:PROB] entries where NAME is a component
 459                            (group) and PROB the probability associated with
 460                            NAME (default 0.5).
 461   --random-seed=VALUE      seed value for --enable/disable-random
 462   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 463                            (only applies to --disable-optimizations builds)
 464   --enable-osfuzz          Enable building fuzzer tool
 465   --libfuzzer=PATH         path to libfuzzer
 466   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 467                            in the name) of tests whose result is ignored
 468   --enable-linux-perf      enable Linux Performance Monitor API
 469
 470 NOTE: Object files are built at the place where configure is launched.
 471 EOF
 472   exit 0
 473 }
 474
 475 if test -t 1 && which tput >/dev/null 2>&1; then
 476     ncolors=$(tput colors)
 477     if test -n "$ncolors" && test $ncolors -ge 8; then
 478         bold_color=$(tput bold)
 479         warn_color=$(tput setaf 3)
 480         error_color=$(tput setaf 1)
 481         reset_color=$(tput sgr0)
 482     fi
 483     # 72 used instead of 80 since that's the default of pr
 484     ncols=$(tput cols)
 485 fi
 486 : ${ncols:=72}
 487
 488 log(){
 489     echo "$@" >> $logfile
 490 }
 491
 492 log_file(){
 493     log BEGIN $1
 494     pr -n -t $1 >> $logfile
 495     log END $1
 496 }
 497
 498 warn(){
 499     log "WARNING: $*"
 500     WARNINGS="${WARNINGS}WARNING: $*\n"
 501 }
 502
 503 die(){
 504     log "$@"
 505     echo "$error_color$bold_color$@$reset_color"
 506     cat <<EOF
 507
 508 If you think configure made a mistake, make sure you are using the latest
 509 version from Git.  If the latest version fails, report the problem to the
 510 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 511 EOF
 512     if disabled logging; then
 513         cat <<EOF
 514 Rerun configure with logging enabled (do not use --disable-logging), and
 515 include the log this produces with your report.
 516 EOF
 517     else
 518         cat <<EOF
 519 Include the log file "$logfile" produced by configure as this will help
 520 solve the problem.
 521 EOF
 522     fi
 523     exit 1
 524 }
 525
 526 # Avoid locale weirdness, besides we really just want to translate ASCII.
 527 toupper(){
 528     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 529 }
 530
 531 tolower(){
 532     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 533 }
 534
 535 c_escape(){
 536     echo "$*" | sed 's/["\\]/\\\0/g'
 537 }
 538
 539 sh_quote(){
 540     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 541     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 542     echo "$v"
 543 }
 544
 545 cleanws(){
 546     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 547 }
 548
 549 filter(){
 550     pat=$1
 551     shift
 552     for v; do
 553         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 554     done
 555 }
 556
 557 filter_out(){
 558     pat=$1
 559     shift
 560     for v; do
 561         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 562     done
 563 }
 564
 565 map(){
 566     m=$1
 567     shift
 568     for v; do eval $m; done
 569 }
 570
 571 add_suffix(){
 572     suffix=$1
 573     shift
 574     for v; do echo ${v}${suffix}; done
 575 }
 576
 577 remove_suffix(){
 578     suffix=$1
 579     shift
 580     for v; do echo ${v%$suffix}; done
 581 }
 582
 583 set_all(){
 584     value=$1
 585     shift
 586     for var in $*; do
 587         eval $var=$value
 588     done
 589 }
 590
 591 set_weak(){
 592     value=$1
 593     shift
 594     for var; do
 595         eval : \${$var:=$value}
 596     done
 597 }
 598
 599 sanitize_var_name(){
 600     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 601 }
 602
 603 set_sanitized(){
 604     var=$1
 605     shift
 606     eval $(sanitize_var_name "$var")='$*'
 607 }
 608
 609 get_sanitized(){
 610     eval echo \$$(sanitize_var_name "$1")
 611 }
 612
 613 pushvar(){
 614     for pvar in $*; do
 615         eval level=\${${pvar}_level:=0}
 616         eval ${pvar}_${level}="\$$pvar"
 617         eval ${pvar}_level=$(($level+1))
 618     done
 619 }
 620
 621 popvar(){
 622     for pvar in $*; do
 623         eval level=\${${pvar}_level:-0}
 624         test $level = 0 && continue
 625         eval level=$(($level-1))
 626         eval $pvar="\${${pvar}_${level}}"
 627         eval ${pvar}_level=$level
 628         eval unset ${pvar}_${level}
 629     done
 630 }
 631
 632 request(){
 633     for var in $*; do
 634         eval ${var}_requested=yes
 635         eval $var=
 636     done
 637 }
 638
 639 enable(){
 640     set_all yes $*
 641 }
 642
 643 disable(){
 644     set_all no $*
 645 }
 646
 647 enable_weak(){
 648     set_weak yes $*
 649 }
 650
 651 disable_weak(){
 652     set_weak no $*
 653 }
 654
 655 enable_sanitized(){
 656     for var; do
 657         enable $(sanitize_var_name $var)
 658     done
 659 }
 660
 661 disable_sanitized(){
 662     for var; do
 663         disable $(sanitize_var_name $var)
 664     done
 665 }
 666
 667 do_enable_deep(){
 668     for var; do
 669         enabled $var && continue
 670         eval sel="\$${var}_select"
 671         eval sgs="\$${var}_suggest"
 672         pushvar var sgs
 673         enable_deep $sel
 674         popvar sgs
 675         enable_deep_weak $sgs
 676         popvar var
 677     done
 678 }
 679
 680 enable_deep(){
 681     do_enable_deep $*
 682     enable $*
 683 }
 684
 685 enable_deep_weak(){
 686     for var; do
 687         disabled $var && continue
 688         pushvar var
 689         do_enable_deep $var
 690         popvar var
 691         enable_weak $var
 692     done
 693 }
 694
 695 requested(){
 696     test "${1#!}" = "$1" && op="=" || op="!="
 697     eval test "x\$${1#!}_requested" $op "xyes"
 698 }
 699
 700 enabled(){
 701     test "${1#!}" = "$1" && op="=" || op="!="
 702     eval test "x\$${1#!}" $op "xyes"
 703 }
 704
 705 disabled(){
 706     test "${1#!}" = "$1" && op="=" || op="!="
 707     eval test "x\$${1#!}" $op "xno"
 708 }
 709
 710 enabled_all(){
 711     for opt; do
 712         enabled $opt || return 1
 713     done
 714 }
 715
 716 disabled_all(){
 717     for opt; do
 718         disabled $opt || return 1
 719     done
 720 }
 721
 722 enabled_any(){
 723     for opt; do
 724         enabled $opt && return 0
 725     done
 726 }
 727
 728 disabled_any(){
 729     for opt; do
 730         disabled $opt && return 0
 731     done
 732     return 1
 733 }
 734
 735 set_default(){
 736     for opt; do
 737         eval : \${$opt:=\$${opt}_default}
 738     done
 739 }
 740
 741 is_in(){
 742     value=$1
 743     shift
 744     for var in $*; do
 745         [ $var = $value ] && return 0
 746     done
 747     return 1
 748 }
 749
 750 check_deps(){
 751     for cfg; do
 752         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 753         disabled ${cfg}_checking && continue
 754         enable ${cfg}_checking
 755
 756         eval dep_all="\$${cfg}_deps"
 757         eval dep_any="\$${cfg}_deps_any"
 758         eval dep_con="\$${cfg}_conflict"
 759         eval dep_sel="\$${cfg}_select"
 760         eval dep_sgs="\$${cfg}_suggest"
 761         eval dep_ifa="\$${cfg}_if"
 762         eval dep_ifn="\$${cfg}_if_any"
 763
 764         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 765         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 766         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 767
 768         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 769         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 770         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 771         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 772         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 773         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 774
 775         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 776
 777         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 778             # filter out library deps, these do not belong in extralibs
 779             is_in $dep $LIBRARY_LIST && continue
 780             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 781         done
 782
 783         disable ${cfg}_checking
 784     done
 785 }
 786
 787 print_config(){
 788     pfx=$1
 789     files=$2
 790     shift 2
 791     map 'eval echo "$v \${$v:-no}"' "$@" |
 792     awk "BEGIN { split(\"$files\", files) }
 793         {
 794             c = \"$pfx\" toupper(\$1);
 795             v = \$2;
 796             sub(/yes/, 1, v);
 797             sub(/no/,  0, v);
 798             for (f in files) {
 799                 file = files[f];
 800                 if (file ~ /\\.h\$/) {
 801                     printf(\"#define %s %d\\n\", c, v) >>file;
 802                 } else if (file ~ /\\.asm\$/) {
 803                     printf(\"%%define %s %d\\n\", c, v) >>file;
 804                 } else if (file ~ /\\.mak\$/) {
 805                     n = -v ? \"\" : \"!\";
 806                     printf(\"%s%s=yes\\n\", n, c) >>file;
 807                 } else if (file ~ /\\.texi\$/) {
 808                     pre = -v ? \"\" : \"@c \";
 809                     yesno = \$2;
 810                     c2 = tolower(c);
 811                     gsub(/_/, \"-\", c2);
 812                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 813                 }
 814             }
 815         }"
 816 }
 817
 818 print_enabled(){
 819     suf=$1
 820     shift
 821     for v; do
 822         enabled $v && printf "%s\n" ${v%$suf}
 823     done
 824 }
 825
 826 append(){
 827     var=$1
 828     shift
 829     eval "$var=\"\$$var $*\""
 830 }
 831
 832 prepend(){
 833     var=$1
 834     shift
 835     eval "$var=\"$* \$$var\""
 836 }
 837
 838 unique(){
 839     var=$1
 840     uniq_list=""
 841     for tok in $(eval echo \$$var); do
 842         uniq_list="$(filter_out $tok $uniq_list) $tok"
 843     done
 844     eval "$var=\"${uniq_list}\""
 845 }
 846
 847 resolve(){
 848     var=$1
 849     tmpvar=
 850     for entry in $(eval echo \$$var); do
 851         tmpvar="$tmpvar $(eval echo \$${entry})"
 852     done
 853     eval "$var=\"${tmpvar}\""
 854 }
 855
 856 add_cppflags(){
 857     append CPPFLAGS "$@"
 858 }
 859
 860 add_cflags(){
 861     append CFLAGS $($cflags_filter "$@")
 862 }
 863
 864 add_cflags_headers(){
 865     append CFLAGS_HEADERS $($cflags_filter "$@")
 866 }
 867
 868 add_cxxflags(){
 869     append CXXFLAGS $($cflags_filter "$@")
 870 }
 871
 872 add_asflags(){
 873     append ASFLAGS $($asflags_filter "$@")
 874 }
 875
 876 add_objcflags(){
 877     append OBJCFLAGS $($objcflags_filter "$@")
 878 }
 879
 880 add_ldflags(){
 881     append LDFLAGS $($ldflags_filter "$@")
 882 }
 883
 884 add_ldexeflags(){
 885     append LDEXEFLAGS $($ldflags_filter "$@")
 886 }
 887
 888 add_ldsoflags(){
 889     append LDSOFLAGS $($ldflags_filter "$@")
 890 }
 891
 892 add_stripflags(){
 893     append ASMSTRIPFLAGS "$@"
 894 }
 895
 896 add_extralibs(){
 897     prepend extralibs $($ldflags_filter "$@")
 898 }
 899
 900 add_host_cppflags(){
 901     append host_cppflags "$@"
 902 }
 903
 904 add_host_cflags(){
 905     append host_cflags $($host_cflags_filter "$@")
 906 }
 907
 908 add_host_ldflags(){
 909     append host_ldflags $($host_ldflags_filter "$@")
 910 }
 911
 912 add_compat(){
 913     append compat_objs $1
 914     shift
 915     map 'add_cppflags -D$v' "$@"
 916 }
 917
 918 test_cmd(){
 919     log "$@"
 920     "$@" >> $logfile 2>&1
 921 }
 922
 923 test_stat(){
 924     log test_stat "$@"
 925     stat "$1" >> $logfile 2>&1
 926 }
 927
 928 cc_o(){
 929     eval printf '%s\\n' $CC_O
 930 }
 931
 932 cc_e(){
 933     eval printf '%s\\n' $CC_E
 934 }
 935
 936 test_cc(){
 937     log test_cc "$@"
 938     cat > $TMPC
 939     log_file $TMPC
 940     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 941 }
 942
 943 test_cxx(){
 944     log test_cxx "$@"
 945     cat > $TMPCPP
 946     log_file $TMPCPP
 947     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 948 }
 949
 950 test_objcc(){
 951     log test_objcc "$@"
 952     cat > $TMPM
 953     log_file $TMPM
 954     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 955 }
 956
 957 test_cpp(){
 958     log test_cpp "$@"
 959     cat > $TMPC
 960     log_file $TMPC
 961     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 962 }
 963
 964 as_o(){
 965     eval printf '%s\\n' $AS_O
 966 }
 967
 968 test_as(){
 969     log test_as "$@"
 970     cat > $TMPS
 971     log_file $TMPS
 972     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 973 }
 974
 975 check_cmd(){
 976     log check_cmd "$@"
 977     cmd=$1
 978     disabled $cmd && return
 979     disable $cmd
 980     test_cmd $@ && enable $cmd
 981 }
 982
 983 check_as(){
 984     log check_as "$@"
 985     name=$1
 986     code=$2
 987     shift 2
 988     disable $name
 989     test_as $@ <<EOF && enable $name
 990 $code
 991 EOF
 992 }
 993
 994 check_inline_asm(){
 995     log check_inline_asm "$@"
 996     name="$1"
 997     code="$2"
 998     shift 2
 999     disable $name
1000     test_cc "$@" <<EOF && enable $name
1001 void foo(void){ __asm__ volatile($code); }
1002 EOF
1003 }
1004
1005 check_inline_asm_flags(){
1006     log check_inline_asm_flags "$@"
1007     name="$1"
1008     code="$2"
1009     flags=''
1010     shift 2
1011     while [ "$1" != "" ]; do
1012       append flags $1
1013       shift
1014     done;
1015     disable $name
1016     cat > $TMPC <<EOF
1017 void foo(void){ __asm__ volatile($code); }
1018 EOF
1019     log_file $TMPC
1020     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1021     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1022 }
1023
1024 check_insn(){
1025     log check_insn "$@"
1026     check_inline_asm ${1}_inline "$2"
1027     check_as ${1}_external "$2"
1028 }
1029
1030 x86asm_o(){
1031     eval printf '%s\\n' $X86ASM_O
1032 }
1033
1034 test_x86asm(){
1035     log test_x86asm "$@"
1036     echo "$1" > $TMPASM
1037     log_file $TMPASM
1038     shift 1
1039     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1040 }
1041
1042 ld_o(){
1043     eval printf '%s\\n' $LD_O
1044 }
1045
1046 test_ld(){
1047     log test_ld "$@"
1048     type=$1
1049     shift 1
1050     flags=$(filter_out '-l*|*.so' $@)
1051     libs=$(filter '-l*|*.so' $@)
1052     test_$type $($cflags_filter $flags) || return
1053     flags=$($ldflags_filter $flags)
1054     libs=$($ldflags_filter $libs)
1055     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1056 }
1057
1058 check_ld(){
1059     log check_ld "$@"
1060     type=$1
1061     name=$2
1062     shift 2
1063     disable $name
1064     test_ld $type $@ && enable $name
1065 }
1066
1067 print_include(){
1068     hdr=$1
1069     test "${hdr%.h}" = "${hdr}" &&
1070         echo "#include $hdr"    ||
1071         echo "#include <$hdr>"
1072 }
1073
1074 test_code(){
1075     log test_code "$@"
1076     check=$1
1077     headers=$2
1078     code=$3
1079     shift 3
1080     {
1081         for hdr in $headers; do
1082             print_include $hdr
1083         done
1084         echo "int main(void) { $code; return 0; }"
1085     } | test_$check "$@"
1086 }
1087
1088 check_cppflags(){
1089     log check_cppflags "$@"
1090     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1091 #include <stdlib.h>
1092 EOF
1093 }
1094
1095 test_cflags(){
1096     log test_cflags "$@"
1097     set -- $($cflags_filter "$@")
1098     test_cc "$@" <<EOF
1099 int x;
1100 EOF
1101 }
1102
1103 check_cflags(){
1104     log check_cflags "$@"
1105     test_cflags "$@" && add_cflags "$@"
1106 }
1107
1108 check_cxxflags(){
1109     log check_cxxflags "$@"
1110     set -- $($cflags_filter "$@")
1111     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1112 int x;
1113 EOF
1114 }
1115
1116 test_objcflags(){
1117     log test_objcflags "$@"
1118     set -- $($objcflags_filter "$@")
1119     test_objcc "$@" <<EOF
1120 int x;
1121 EOF
1122 }
1123
1124 check_objcflags(){
1125     log check_objcflags "$@"
1126     test_objcflags "$@" && add_objcflags "$@"
1127 }
1128
1129 test_ldflags(){
1130     log test_ldflags "$@"
1131     set -- $($ldflags_filter "$@")
1132     test_ld "cc" "$@" <<EOF
1133 int main(void){ return 0; }
1134 EOF
1135 }
1136
1137 check_ldflags(){
1138     log check_ldflags "$@"
1139     test_ldflags "$@" && add_ldflags "$@"
1140 }
1141
1142 test_stripflags(){
1143     log test_stripflags "$@"
1144     # call test_cc to get a fresh TMPO
1145     test_cc <<EOF
1146 int main(void) { return 0; }
1147 EOF
1148     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1149 }
1150
1151 check_stripflags(){
1152     log check_stripflags "$@"
1153     test_stripflags "$@" && add_stripflags "$@"
1154 }
1155
1156 check_header(){
1157     log check_header "$@"
1158     headers=$1
1159     shift
1160     disable_sanitized $headers
1161     {
1162         for hdr in $headers; do
1163             print_include $hdr
1164         done
1165         echo "int x;"
1166     } | test_cpp "$@" && enable_sanitized $headers
1167 }
1168
1169 check_header_objcc(){
1170     log check_header_objcc "$@"
1171     rm -f -- "$TMPO"
1172     header=$1
1173     shift
1174     disable_sanitized $header
1175     {
1176        echo "#include <$header>"
1177        echo "int main(void) { return 0; }"
1178     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1179 }
1180
1181 check_apple_framework(){
1182     log check_apple_framework "$@"
1183     framework="$1"
1184     name="$(tolower $framework)"
1185     header="${framework}/${framework}.h"
1186     disable $name
1187     check_header_objcc $header &&
1188         enable $name && eval ${name}_extralibs='"-framework $framework"'
1189 }
1190
1191 check_func(){
1192     log check_func "$@"
1193     func=$1
1194     shift
1195     disable $func
1196     test_ld "cc" "$@" <<EOF && enable $func
1197 extern int $func();
1198 int main(void){ $func(); }
1199 EOF
1200 }
1201
1202 check_complexfunc(){
1203     log check_complexfunc "$@"
1204     func=$1
1205     narg=$2
1206     shift 2
1207     test $narg = 2 && args="f, g" || args="f * I"
1208     disable $func
1209     test_ld "cc" "$@" <<EOF && enable $func
1210 #include <complex.h>
1211 #include <math.h>
1212 float foo(complex float f, complex float g) { return $func($args); }
1213 int main(void){ return (int) foo; }
1214 EOF
1215 }
1216
1217 check_mathfunc(){
1218     log check_mathfunc "$@"
1219     func=$1
1220     narg=$2
1221     shift 2
1222     test $narg = 2 && args="f, g" || args="f"
1223     disable $func
1224     test_ld "cc" "$@" <<EOF && enable $func
1225 #include <math.h>
1226 float foo(float f, float g) { return $func($args); }
1227 int main(void){ return (int) foo; }
1228 EOF
1229 }
1230
1231 check_func_headers(){
1232     log check_func_headers "$@"
1233     headers=$1
1234     funcs=$2
1235     shift 2
1236     {
1237         for hdr in $headers; do
1238             print_include $hdr
1239         done
1240         echo "#include <stdint.h>"
1241         for func in $funcs; do
1242             echo "long check_$func(void) { return (long) $func; }"
1243         done
1244         echo "int main(void) { int ret = 0;"
1245         # LTO could optimize out the test functions without this
1246         for func in $funcs; do
1247             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1248         done
1249         echo "return ret; }"
1250     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1251 }
1252
1253 check_class_headers_cpp(){
1254     log check_class_headers_cpp "$@"
1255     headers=$1
1256     classes=$2
1257     shift 2
1258     {
1259         for hdr in $headers; do
1260             echo "#include <$hdr>"
1261         done
1262         echo "int main(void) { "
1263         i=1
1264         for class in $classes; do
1265             echo "$class obj$i;"
1266             i=$(expr $i + 1)
1267         done
1268         echo "return 0; }"
1269     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1270 }
1271
1272 test_cpp_condition(){
1273     log test_cpp_condition "$@"
1274     header=$1
1275     condition=$2
1276     shift 2
1277     test_cpp "$@" <<EOF
1278 #include <$header>
1279 #if !($condition)
1280 #error "unsatisfied condition: $condition"
1281 #endif
1282 EOF
1283 }
1284
1285 check_cpp_condition(){
1286     log check_cpp_condition "$@"
1287     name=$1
1288     shift 1
1289     disable $name
1290     test_cpp_condition "$@" && enable $name
1291 }
1292
1293 test_cflags_cc(){
1294     log test_cflags_cc "$@"
1295     flags=$1
1296     header=$2
1297     condition=$3
1298     shift 3
1299     set -- $($cflags_filter "$flags")
1300     test_cc "$@" <<EOF
1301 #include <$header>
1302 #if !($condition)
1303 #error "unsatisfied condition: $condition"
1304 #endif
1305 EOF
1306 }
1307
1308 check_lib(){
1309     log check_lib "$@"
1310     name="$1"
1311     headers="$2"
1312     funcs="$3"
1313     shift 3
1314     disable $name
1315     check_func_headers "$headers" "$funcs" "$@" &&
1316         enable $name && eval ${name}_extralibs="\$@"
1317 }
1318
1319 check_lib_cpp(){
1320     log check_lib_cpp "$@"
1321     name="$1"
1322     headers="$2"
1323     classes="$3"
1324     shift 3
1325     disable $name
1326     check_class_headers_cpp "$headers" "$classes" "$@" &&
1327         enable $name && eval ${name}_extralibs="\$@"
1328 }
1329
1330 test_pkg_config(){
1331     log test_pkg_config "$@"
1332     name="$1"
1333     pkg_version="$2"
1334     pkg="${2%% *}"
1335     headers="$3"
1336     funcs="$4"
1337     shift 4
1338     disable $name
1339     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1340     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1341     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1342     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1343         enable $name &&
1344         set_sanitized "${name}_cflags"    $pkg_cflags &&
1345         set_sanitized "${name}_extralibs" $pkg_libs
1346 }
1347
1348 check_pkg_config(){
1349     log check_pkg_config "$@"
1350     name="$1"
1351     test_pkg_config "$@" &&
1352         eval add_cflags \$${name}_cflags
1353 }
1354
1355 test_exec(){
1356     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1357 }
1358
1359 check_exec_crash(){
1360     log check_exec_crash "$@"
1361     code=$(cat)
1362
1363     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1364     # are safe but may not be available everywhere.  Thus we use
1365     # raise(SIGTERM) instead.  The check is run in a subshell so we
1366     # can redirect the "Terminated" message from the shell.  SIGBUS
1367     # is not defined by standard C so it is used conditionally.
1368
1369     (test_exec "$@") >> $logfile 2>&1 <<EOF
1370 #include <signal.h>
1371 static void sighandler(int sig){
1372     raise(SIGTERM);
1373 }
1374 int foo(void){
1375     $code
1376 }
1377 int (*func_ptr)(void) = foo;
1378 int main(void){
1379     signal(SIGILL, sighandler);
1380     signal(SIGFPE, sighandler);
1381     signal(SIGSEGV, sighandler);
1382 #ifdef SIGBUS
1383     signal(SIGBUS, sighandler);
1384 #endif
1385     return func_ptr();
1386 }
1387 EOF
1388 }
1389
1390 check_type(){
1391     log check_type "$@"
1392     headers=$1
1393     type=$2
1394     shift 2
1395     disable_sanitized "$type"
1396     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1397 }
1398
1399 check_struct(){
1400     log check_struct "$@"
1401     headers=$1
1402     struct=$2
1403     member=$3
1404     shift 3
1405     disable_sanitized "${struct}_${member}"
1406     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1407         enable_sanitized "${struct}_${member}"
1408 }
1409
1410 check_builtin(){
1411     log check_builtin "$@"
1412     name=$1
1413     headers=$2
1414     builtin=$3
1415     shift 3
1416     disable "$name"
1417     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1418 }
1419
1420 check_compile_assert(){
1421     log check_compile_assert "$@"
1422     name=$1
1423     headers=$2
1424     condition=$3
1425     shift 3
1426     disable "$name"
1427     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1428 }
1429
1430 check_cc(){
1431     log check_cc "$@"
1432     name=$1
1433     shift
1434     disable "$name"
1435     test_code cc "$@" && enable "$name"
1436 }
1437
1438 require(){
1439     log require "$@"
1440     name_version="$1"
1441     name="${1%% *}"
1442     shift
1443     check_lib $name "$@" || die "ERROR: $name_version not found"
1444 }
1445
1446 require_cc(){
1447     log require_cc "$@"
1448     name="$1"
1449     shift
1450     test_code cc "$@" || die "ERROR: $name failed"
1451 }
1452
1453 require_cpp(){
1454     name="$1"
1455     headers="$2"
1456     classes="$3"
1457     shift 3
1458     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1459 }
1460
1461 require_header(){
1462     log require_header "$@"
1463     headers="$1"
1464     check_header "$@" || die "ERROR: $headers not found"
1465 }
1466
1467 require_cpp_condition(){
1468     log require_cpp_condition "$@"
1469     condition="$2"
1470     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1471 }
1472
1473 require_pkg_config(){
1474     log require_pkg_config "$@"
1475     pkg_version="$2"
1476     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1477 }
1478
1479 hostcc_e(){
1480     eval printf '%s\\n' $HOSTCC_E
1481 }
1482
1483 hostcc_o(){
1484     eval printf '%s\\n' $HOSTCC_O
1485 }
1486
1487 test_host_cc(){
1488     log test_host_cc "$@"
1489     cat > $TMPC
1490     log_file $TMPC
1491     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1492 }
1493
1494 test_host_cpp(){
1495     log test_host_cpp "$@"
1496     cat > $TMPC
1497     log_file $TMPC
1498     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1499 }
1500
1501 check_host_cppflags(){
1502     log check_host_cppflags "$@"
1503     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1504 #include <stdlib.h>
1505 EOF
1506 }
1507
1508 check_host_cflags(){
1509     log check_host_cflags "$@"
1510     set -- $($host_cflags_filter "$@")
1511     test_host_cc "$@" <<EOF && append host_cflags "$@"
1512 int x;
1513 EOF
1514 }
1515
1516 test_host_cpp_condition(){
1517     log test_host_cpp_condition "$@"
1518     header=$1
1519     condition=$2
1520     shift 2
1521     test_host_cpp "$@" <<EOF
1522 #include <$header>
1523 #if !($condition)
1524 #error "unsatisfied condition: $condition"
1525 #endif
1526 EOF
1527 }
1528
1529 check_host_cpp_condition(){
1530     log check_host_cpp_condition "$@"
1531     name=$1
1532     shift 1
1533     disable $name
1534     test_host_cpp_condition "$@" && enable $name
1535 }
1536
1537 cp_if_changed(){
1538     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1539     mkdir -p "$(dirname $2)"
1540     cp -f "$1" "$2"
1541 }
1542
1543 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1544 # system-dependent things.
1545
1546 AVCODEC_COMPONENTS="
1547     bsfs
1548     decoders
1549     encoders
1550     hwaccels
1551     parsers
1552 "
1553
1554 AVDEVICE_COMPONENTS="
1555     indevs
1556     outdevs
1557 "
1558
1559 AVFILTER_COMPONENTS="
1560     filters
1561 "
1562
1563 AVFORMAT_COMPONENTS="
1564     demuxers
1565     muxers
1566     protocols
1567 "
1568
1569 COMPONENT_LIST="
1570     $AVCODEC_COMPONENTS
1571     $AVDEVICE_COMPONENTS
1572     $AVFILTER_COMPONENTS
1573     $AVFORMAT_COMPONENTS
1574 "
1575
1576 EXAMPLE_LIST="
1577     avio_dir_cmd_example
1578     avio_reading_example
1579     decode_audio_example
1580     decode_video_example
1581     demuxing_decoding_example
1582     encode_audio_example
1583     encode_video_example
1584     extract_mvs_example
1585     filter_audio_example
1586     filtering_audio_example
1587     filtering_video_example
1588     http_multiclient_example
1589     hw_decode_example
1590     metadata_example
1591     muxing_example
1592     qsvdec_example
1593     remuxing_example
1594     resampling_audio_example
1595     scaling_video_example
1596     transcode_aac_example
1597     transcoding_example
1598     vaapi_encode_example
1599     vaapi_transcode_example
1600 "
1601
1602 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1603     alsa
1604     appkit
1605     avfoundation
1606     bzlib
1607     coreimage
1608     iconv
1609     libxcb
1610     libxcb_shm
1611     libxcb_shape
1612     libxcb_xfixes
1613     lzma
1614     schannel
1615     sdl2
1616     securetransport
1617     sndio
1618     xlib
1619     zlib
1620 "
1621
1622 EXTERNAL_LIBRARY_GPL_LIST="
1623     avisynth
1624     frei0r
1625     libcdio
1626     librubberband
1627     libvidstab
1628     libx264
1629     libx265
1630     libxavs
1631     libxvid
1632 "
1633
1634 EXTERNAL_LIBRARY_NONFREE_LIST="
1635     decklink
1636     libndi_newtek
1637     libfdk_aac
1638     openssl
1639     libtls
1640 "
1641
1642 EXTERNAL_LIBRARY_VERSION3_LIST="
1643     gmp
1644     libopencore_amrnb
1645     libopencore_amrwb
1646     libvmaf
1647     libvo_amrwbenc
1648     rkmpp
1649 "
1650
1651 EXTERNAL_LIBRARY_GPLV3_LIST="
1652     libsmbclient
1653 "
1654
1655 EXTERNAL_LIBRARY_LIST="
1656     $EXTERNAL_LIBRARY_GPL_LIST
1657     $EXTERNAL_LIBRARY_NONFREE_LIST
1658     $EXTERNAL_LIBRARY_VERSION3_LIST
1659     $EXTERNAL_LIBRARY_GPLV3_LIST
1660     chromaprint
1661     gcrypt
1662     gnutls
1663     jni
1664     ladspa
1665     libaom
1666     libass
1667     libbluray
1668     libbs2b
1669     libcaca
1670     libcelt
1671     libcodec2
1672     libdc1394
1673     libdrm
1674     libflite
1675     libfontconfig
1676     libfreetype
1677     libfribidi
1678     libgme
1679     libgsm
1680     libiec61883
1681     libilbc
1682     libjack
1683     libkvazaar
1684     libmodplug
1685     libmp3lame
1686     libmysofa
1687     libopencv
1688     libopenh264
1689     libopenjpeg
1690     libopenmpt
1691     libopus
1692     libpulse
1693     librsvg
1694     librtmp
1695     libshine
1696     libsmbclient
1697     libsnappy
1698     libsoxr
1699     libspeex
1700     libssh
1701     libtesseract
1702     libtheora
1703     libtwolame
1704     libv4l2
1705     libvorbis
1706     libvpx
1707     libwavpack
1708     libwebp
1709     libxml2
1710     libzimg
1711     libzmq
1712     libzvbi
1713     lv2
1714     mediacodec
1715     openal
1716     opengl
1717 "
1718
1719 HWACCEL_AUTODETECT_LIBRARY_LIST="
1720     amf
1721     audiotoolbox
1722     crystalhd
1723     cuda
1724     cuvid
1725     d3d11va
1726     dxva2
1727     ffnvcodec
1728     nvdec
1729     nvenc
1730     vaapi
1731     vdpau
1732     videotoolbox
1733     v4l2_m2m
1734     xvmc
1735 "
1736
1737 # catchall list of things that require external libs to link
1738 EXTRALIBS_LIST="
1739     cpu_init
1740     cws2fws
1741 "
1742
1743 HWACCEL_LIBRARY_NONFREE_LIST="
1744     cuda_sdk
1745     libnpp
1746 "
1747
1748 HWACCEL_LIBRARY_LIST="
1749     $HWACCEL_LIBRARY_NONFREE_LIST
1750     libmfx
1751     mmal
1752     omx
1753     opencl
1754 "
1755
1756 DOCUMENT_LIST="
1757     doc
1758     htmlpages
1759     manpages
1760     podpages
1761     txtpages
1762 "
1763
1764 FEATURE_LIST="
1765     ftrapv
1766     gray
1767     hardcoded_tables
1768     omx_rpi
1769     runtime_cpudetect
1770     safe_bitstream_reader
1771     shared
1772     small
1773     static
1774     swscale_alpha
1775 "
1776
1777 LIBRARY_LIST="
1778     avcodec
1779     avdevice
1780     avfilter
1781     avformat
1782     avresample
1783     avutil
1784     postproc
1785     swresample
1786     swscale
1787 "
1788
1789 LICENSE_LIST="
1790     gpl
1791     nonfree
1792     version3
1793 "
1794
1795 PROGRAM_LIST="
1796     ffplay
1797     ffprobe
1798     ffmpeg
1799 "
1800
1801 SUBSYSTEM_LIST="
1802     dct
1803     dwt
1804     error_resilience
1805     faan
1806     fast_unaligned
1807     fft
1808     lsp
1809     lzo
1810     mdct
1811     pixelutils
1812     network
1813     rdft
1814 "
1815
1816 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1817 CONFIG_LIST="
1818     $DOCUMENT_LIST
1819     $EXAMPLE_LIST
1820     $EXTERNAL_LIBRARY_LIST
1821     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1822     $HWACCEL_LIBRARY_LIST
1823     $HWACCEL_AUTODETECT_LIBRARY_LIST
1824     $FEATURE_LIST
1825     $LICENSE_LIST
1826     $LIBRARY_LIST
1827     $PROGRAM_LIST
1828     $SUBSYSTEM_LIST
1829     autodetect
1830     fontconfig
1831     linux_perf
1832     memory_poisoning
1833     neon_clobber_test
1834     ossfuzz
1835     pic
1836     thumb
1837     valgrind_backtrace
1838     xmm_clobber_test
1839     $COMPONENT_LIST
1840 "
1841
1842 THREADS_LIST="
1843     pthreads
1844     os2threads
1845     w32threads
1846 "
1847
1848 ATOMICS_LIST="
1849     atomics_gcc
1850     atomics_suncc
1851     atomics_win32
1852 "
1853
1854 AUTODETECT_LIBS="
1855     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1856     $HWACCEL_AUTODETECT_LIBRARY_LIST
1857     $THREADS_LIST
1858 "
1859
1860 ARCH_LIST="
1861     aarch64
1862     alpha
1863     arm
1864     avr32
1865     avr32_ap
1866     avr32_uc
1867     bfin
1868     ia64
1869     m68k
1870     mips
1871     mips64
1872     parisc
1873     ppc
1874     ppc64
1875     s390
1876     sh4
1877     sparc
1878     sparc64
1879     tilegx
1880     tilepro
1881     tomi
1882     x86
1883     x86_32
1884     x86_64
1885 "
1886
1887 ARCH_EXT_LIST_ARM="
1888     armv5te
1889     armv6
1890     armv6t2
1891     armv8
1892     neon
1893     vfp
1894     vfpv3
1895     setend
1896 "
1897
1898 ARCH_EXT_LIST_MIPS="
1899     mipsfpu
1900     mips32r2
1901     mips32r5
1902     mips64r2
1903     mips32r6
1904     mips64r6
1905     mipsdsp
1906     mipsdspr2
1907     msa
1908 "
1909
1910 ARCH_EXT_LIST_LOONGSON="
1911     loongson2
1912     loongson3
1913     mmi
1914 "
1915
1916 ARCH_EXT_LIST_X86_SIMD="
1917     aesni
1918     amd3dnow
1919     amd3dnowext
1920     avx
1921     avx2
1922     avx512
1923     fma3
1924     fma4
1925     mmx
1926     mmxext
1927     sse
1928     sse2
1929     sse3
1930     sse4
1931     sse42
1932     ssse3
1933     xop
1934 "
1935
1936 ARCH_EXT_LIST_PPC="
1937     altivec
1938     dcbzl
1939     ldbrx
1940     power8
1941     ppc4xx
1942     vsx
1943 "
1944
1945 ARCH_EXT_LIST_X86="
1946     $ARCH_EXT_LIST_X86_SIMD
1947     cpunop
1948     i686
1949 "
1950
1951 ARCH_EXT_LIST="
1952     $ARCH_EXT_LIST_ARM
1953     $ARCH_EXT_LIST_PPC
1954     $ARCH_EXT_LIST_X86
1955     $ARCH_EXT_LIST_MIPS
1956     $ARCH_EXT_LIST_LOONGSON
1957 "
1958
1959 ARCH_FEATURES="
1960     aligned_stack
1961     fast_64bit
1962     fast_clz
1963     fast_cmov
1964     local_aligned
1965     simd_align_16
1966     simd_align_32
1967     simd_align_64
1968 "
1969
1970 BUILTIN_LIST="
1971     atomic_cas_ptr
1972     machine_rw_barrier
1973     MemoryBarrier
1974     mm_empty
1975     rdtsc
1976     sem_timedwait
1977     sync_val_compare_and_swap
1978 "
1979 HAVE_LIST_CMDLINE="
1980     inline_asm
1981     symver
1982     x86asm
1983 "
1984
1985 HAVE_LIST_PUB="
1986     bigendian
1987     fast_unaligned
1988 "
1989
1990 HEADERS_LIST="
1991     arpa_inet_h
1992     asm_types_h
1993     cdio_paranoia_h
1994     cdio_paranoia_paranoia_h
1995     cuda_h
1996     dispatch_dispatch_h
1997     dev_bktr_ioctl_bt848_h
1998     dev_bktr_ioctl_meteor_h
1999     dev_ic_bt8xx_h
2000     dev_video_bktr_ioctl_bt848_h
2001     dev_video_meteor_ioctl_meteor_h
2002     direct_h
2003     dirent_h
2004     dxgidebug_h
2005     dxva_h
2006     ES2_gl_h
2007     gsm_h
2008     io_h
2009     machine_ioctl_bt848_h
2010     machine_ioctl_meteor_h
2011     malloc_h
2012     opencv2_core_core_c_h
2013     OpenGL_gl3_h
2014     poll_h
2015     sys_param_h
2016     sys_resource_h
2017     sys_select_h
2018     sys_soundcard_h
2019     sys_time_h
2020     sys_un_h
2021     sys_videoio_h
2022     termios_h
2023     udplite_h
2024     unistd_h
2025     valgrind_valgrind_h
2026     windows_h
2027     winsock2_h
2028 "
2029
2030 INTRINSICS_LIST="
2031     intrinsics_neon
2032 "
2033
2034 COMPLEX_FUNCS="
2035     cabs
2036     cexp
2037 "
2038
2039 MATH_FUNCS="
2040     atanf
2041     atan2f
2042     cbrt
2043     cbrtf
2044     copysign
2045     cosf
2046     erf
2047     exp2
2048     exp2f
2049     expf
2050     hypot
2051     isfinite
2052     isinf
2053     isnan
2054     ldexpf
2055     llrint
2056     llrintf
2057     log2
2058     log2f
2059     log10f
2060     lrint
2061     lrintf
2062     powf
2063     rint
2064     round
2065     roundf
2066     sinf
2067     trunc
2068     truncf
2069 "
2070
2071 SYSTEM_FEATURES="
2072     dos_paths
2073     libc_msvcrt
2074     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2075     section_data_rel_ro
2076     threads
2077     uwp
2078     winrt
2079 "
2080
2081 SYSTEM_FUNCS="
2082     access
2083     aligned_malloc
2084     arc4random
2085     clock_gettime
2086     closesocket
2087     CommandLineToArgvW
2088     fcntl
2089     getaddrinfo
2090     gethrtime
2091     getopt
2092     GetProcessAffinityMask
2093     GetProcessMemoryInfo
2094     GetProcessTimes
2095     getrusage
2096     GetSystemTimeAsFileTime
2097     gettimeofday
2098     glob
2099     glXGetProcAddress
2100     gmtime_r
2101     inet_aton
2102     isatty
2103     kbhit
2104     localtime_r
2105     lstat
2106     lzo1x_999_compress
2107     mach_absolute_time
2108     MapViewOfFile
2109     memalign
2110     mkstemp
2111     mmap
2112     mprotect
2113     nanosleep
2114     PeekNamedPipe
2115     posix_memalign
2116     pthread_cancel
2117     sched_getaffinity
2118     SecItemImport
2119     SetConsoleTextAttribute
2120     SetConsoleCtrlHandler
2121     setmode
2122     setrlimit
2123     Sleep
2124     strerror_r
2125     sysconf
2126     sysctl
2127     usleep
2128     UTGetOSTypeFromString
2129     VirtualAlloc
2130     wglGetProcAddress
2131 "
2132
2133 SYSTEM_LIBRARIES="
2134     vaapi_drm
2135     vaapi_x11
2136     vdpau_x11
2137     wincrypt
2138 "
2139
2140 TOOLCHAIN_FEATURES="
2141     as_arch_directive
2142     as_fpu_directive
2143     as_func
2144     as_object_arch
2145     asm_mod_q
2146     blocks_extension
2147     ebp_available
2148     ebx_available
2149     gnu_as
2150     gnu_windres
2151     ibm_asm
2152     inline_asm_direct_symbol_refs
2153     inline_asm_labels
2154     inline_asm_nonlocal_labels
2155     pragma_deprecated
2156     rsync_contimeout
2157     symver_asm_label
2158     symver_gnu_asm
2159     vfp_args
2160     xform_asm
2161     xmm_clobbers
2162 "
2163
2164 TYPES_LIST="
2165     kCMVideoCodecType_HEVC
2166     socklen_t
2167     struct_addrinfo
2168     struct_group_source_req
2169     struct_ip_mreq_source
2170     struct_ipv6_mreq
2171     struct_msghdr_msg_flags
2172     struct_pollfd
2173     struct_rusage_ru_maxrss
2174     struct_sctp_event_subscribe
2175     struct_sockaddr_in6
2176     struct_sockaddr_sa_len
2177     struct_sockaddr_storage
2178     struct_stat_st_mtim_tv_nsec
2179     struct_v4l2_frmivalenum_discrete
2180 "
2181
2182 HAVE_LIST="
2183     $ARCH_EXT_LIST
2184     $(add_suffix _external $ARCH_EXT_LIST)
2185     $(add_suffix _inline   $ARCH_EXT_LIST)
2186     $ARCH_FEATURES
2187     $BUILTIN_LIST
2188     $COMPLEX_FUNCS
2189     $HAVE_LIST_CMDLINE
2190     $HAVE_LIST_PUB
2191     $HEADERS_LIST
2192     $INTRINSICS_LIST
2193     $MATH_FUNCS
2194     $SYSTEM_FEATURES
2195     $SYSTEM_FUNCS
2196     $SYSTEM_LIBRARIES
2197     $THREADS_LIST
2198     $TOOLCHAIN_FEATURES
2199     $TYPES_LIST
2200     makeinfo
2201     makeinfo_html
2202     opencl_d3d11
2203     opencl_drm_arm
2204     opencl_drm_beignet
2205     opencl_dxva2
2206     opencl_vaapi_beignet
2207     opencl_vaapi_intel_media
2208     perl
2209     pod2man
2210     texi2html
2211 "
2212
2213 # options emitted with CONFIG_ prefix but not available on the command line
2214 CONFIG_EXTRA="
2215     aandcttables
2216     ac3dsp
2217     adts_header
2218     audio_frame_queue
2219     audiodsp
2220     blockdsp
2221     bswapdsp
2222     cabac
2223     cbs
2224     cbs_h264
2225     cbs_h265
2226     cbs_mpeg2
2227     dirac_parse
2228     dvprofile
2229     exif
2230     faandct
2231     faanidct
2232     fdctdsp
2233     flacdsp
2234     fmtconvert
2235     frame_thread_encoder
2236     g722dsp
2237     golomb
2238     gplv3
2239     h263dsp
2240     h264chroma
2241     h264dsp
2242     h264parse
2243     h264pred
2244     h264qpel
2245     hevcparse
2246     hpeldsp
2247     huffman
2248     huffyuvdsp
2249     huffyuvencdsp
2250     idctdsp
2251     iirfilter
2252     mdct15
2253     intrax8
2254     iso_media
2255     ividsp
2256     jpegtables
2257     lgplv3
2258     libx262
2259     llauddsp
2260     llviddsp
2261     llvidencdsp
2262     lpc
2263     lzf
2264     me_cmp
2265     mpeg_er
2266     mpegaudio
2267     mpegaudiodsp
2268     mpegaudioheader
2269     mpegvideo
2270     mpegvideoenc
2271     mss34dsp
2272     pixblockdsp
2273     qpeldsp
2274     qsv
2275     qsvdec
2276     qsvenc
2277     qsvvpp
2278     rangecoder
2279     riffdec
2280     riffenc
2281     rtpdec
2282     rtpenc_chain
2283     rv34dsp
2284     sinewin
2285     snappy
2286     srtp
2287     startcode
2288     texturedsp
2289     texturedspenc
2290     tpeldsp
2291     vaapi_1
2292     vaapi_encode
2293     vc1dsp
2294     videodsp
2295     vp3dsp
2296     vp56dsp
2297     vp8dsp
2298     wma_freqs
2299     wmv2dsp
2300 "
2301
2302 CMDLINE_SELECT="
2303     $ARCH_EXT_LIST
2304     $CONFIG_LIST
2305     $HAVE_LIST_CMDLINE
2306     $THREADS_LIST
2307     asm
2308     cross_compile
2309     debug
2310     extra_warnings
2311     logging
2312     lto
2313     optimizations
2314     rpath
2315     stripping
2316 "
2317
2318 PATHS_LIST="
2319     bindir
2320     datadir
2321     docdir
2322     incdir
2323     libdir
2324     mandir
2325     pkgconfigdir
2326     prefix
2327     shlibdir
2328     install_name_dir
2329 "
2330
2331 CMDLINE_SET="
2332     $PATHS_LIST
2333     ar
2334     arch
2335     as
2336     assert_level
2337     build_suffix
2338     cc
2339     objcc
2340     cpu
2341     cross_prefix
2342     custom_allocator
2343     cxx
2344     dep_cc
2345     doxygen
2346     env
2347     extra_version
2348     gas
2349     host_cc
2350     host_cflags
2351     host_extralibs
2352     host_ld
2353     host_ldflags
2354     host_os
2355     ignore_tests
2356     install
2357     ld
2358     ln_s
2359     logfile
2360     malloc_prefix
2361     nm
2362     optflags
2363     nvccflags
2364     pkg_config
2365     pkg_config_flags
2366     progs_suffix
2367     random_seed
2368     ranlib
2369     samples
2370     strip
2371     sws_max_filter_size
2372     sysinclude
2373     sysroot
2374     target_exec
2375     target_os
2376     target_path
2377     target_samples
2378     tempprefix
2379     toolchain
2380     valgrind
2381     x86asmexe
2382 "
2383
2384 CMDLINE_APPEND="
2385     extra_cflags
2386     extra_cxxflags
2387     extra_objcflags
2388     host_cppflags
2389 "
2390
2391 # code dependency declarations
2392
2393 # architecture extensions
2394
2395 armv5te_deps="arm"
2396 armv6_deps="arm"
2397 armv6t2_deps="arm"
2398 armv8_deps="aarch64"
2399 neon_deps_any="aarch64 arm"
2400 intrinsics_neon_deps="neon"
2401 vfp_deps_any="aarch64 arm"
2402 vfpv3_deps="vfp"
2403 setend_deps="arm"
2404
2405 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2406
2407 altivec_deps="ppc"
2408 dcbzl_deps="ppc"
2409 ldbrx_deps="ppc"
2410 ppc4xx_deps="ppc"
2411 vsx_deps="altivec"
2412 power8_deps="vsx"
2413
2414 loongson2_deps="mips"
2415 loongson3_deps="mips"
2416 mips32r2_deps="mips"
2417 mips32r5_deps="mips"
2418 mips32r6_deps="mips"
2419 mips64r2_deps="mips"
2420 mips64r6_deps="mips"
2421 mipsfpu_deps="mips"
2422 mipsdsp_deps="mips"
2423 mipsdspr2_deps="mips"
2424 mmi_deps="mips"
2425 msa_deps="mipsfpu"
2426
2427 cpunop_deps="i686"
2428 x86_64_select="i686"
2429 x86_64_suggest="fast_cmov"
2430
2431 amd3dnow_deps="mmx"
2432 amd3dnowext_deps="amd3dnow"
2433 i686_deps="x86"
2434 mmx_deps="x86"
2435 mmxext_deps="mmx"
2436 sse_deps="mmxext"
2437 sse2_deps="sse"
2438 sse3_deps="sse2"
2439 ssse3_deps="sse3"
2440 sse4_deps="ssse3"
2441 sse42_deps="sse4"
2442 aesni_deps="sse42"
2443 avx_deps="sse42"
2444 xop_deps="avx"
2445 fma3_deps="avx"
2446 fma4_deps="avx"
2447 avx2_deps="avx"
2448 avx512_deps="avx2"
2449
2450 mmx_external_deps="x86asm"
2451 mmx_inline_deps="inline_asm x86"
2452 mmx_suggest="mmx_external mmx_inline"
2453
2454 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2455     eval dep=\$${ext}_deps
2456     eval ${ext}_external_deps='"${dep}_external"'
2457     eval ${ext}_inline_deps='"${dep}_inline"'
2458     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2459 done
2460
2461 aligned_stack_if_any="aarch64 ppc x86"
2462 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2463 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2464 fast_unaligned_if_any="aarch64 ppc x86"
2465 simd_align_16_if_any="altivec neon sse"
2466 simd_align_32_if_any="avx"
2467 simd_align_64_if_any="avx512"
2468
2469 # system capabilities
2470 symver_if_any="symver_asm_label symver_gnu_asm"
2471 valgrind_backtrace_conflict="optimizations"
2472 valgrind_backtrace_deps="valgrind_valgrind_h"
2473
2474 # threading support
2475 atomics_gcc_if="sync_val_compare_and_swap"
2476 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2477 atomics_win32_if="MemoryBarrier"
2478 atomics_native_if_any="$ATOMICS_LIST"
2479 w32threads_deps="atomics_native"
2480 threads_if_any="$THREADS_LIST"
2481
2482 # subsystems
2483 cbs_h264_select="cbs golomb"
2484 cbs_h265_select="cbs golomb"
2485 cbs_mpeg2_select="cbs"
2486 dct_select="rdft"
2487 dirac_parse_select="golomb"
2488 error_resilience_select="me_cmp"
2489 faandct_deps="faan"
2490 faandct_select="fdctdsp"
2491 faanidct_deps="faan"
2492 faanidct_select="idctdsp"
2493 h264dsp_select="startcode"
2494 hevcparse_select="golomb"
2495 frame_thread_encoder_deps="encoders threads"
2496 intrax8_select="blockdsp idctdsp"
2497 mdct_select="fft"
2498 mdct15_select="fft"
2499 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2500 mpeg_er_select="error_resilience"
2501 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2502 mpegaudiodsp_select="dct"
2503 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2504 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2505 vc1dsp_select="h264chroma qpeldsp startcode"
2506 rdft_select="fft"
2507
2508 # decoders / encoders
2509 aac_decoder_select="adts_header mdct15 mdct sinewin"
2510 aac_fixed_decoder_select="adts_header mdct sinewin"
2511 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2512 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2513 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2514 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2515 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2516 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2517 adpcm_g722_decoder_select="g722dsp"
2518 adpcm_g722_encoder_select="g722dsp"
2519 aic_decoder_select="golomb idctdsp"
2520 alac_encoder_select="lpc"
2521 als_decoder_select="bswapdsp"
2522 amrnb_decoder_select="lsp"
2523 amrwb_decoder_select="lsp"
2524 amv_decoder_select="sp5x_decoder exif"
2525 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2526 ape_decoder_select="bswapdsp llauddsp"
2527 apng_decoder_deps="zlib"
2528 apng_encoder_deps="zlib"
2529 apng_encoder_select="llvidencdsp"
2530 aptx_decoder_select="audio_frame_queue"
2531 aptx_encoder_select="audio_frame_queue"
2532 aptx_hd_decoder_select="audio_frame_queue"
2533 aptx_hd_encoder_select="audio_frame_queue"
2534 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2535 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2536 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2537 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2538 atrac1_decoder_select="mdct sinewin"
2539 atrac3_decoder_select="mdct"
2540 atrac3p_decoder_select="mdct sinewin"
2541 avrn_decoder_select="exif jpegtables"
2542 bink_decoder_select="blockdsp hpeldsp"
2543 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2544 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2545 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2546 clearvideo_decoder_select="idctdsp"
2547 cllc_decoder_select="bswapdsp"
2548 comfortnoise_encoder_select="lpc"
2549 cook_decoder_select="audiodsp mdct sinewin"
2550 cscd_decoder_select="lzo"
2551 cscd_decoder_suggest="zlib"
2552 dca_decoder_select="mdct"
2553 dds_decoder_select="texturedsp"
2554 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2555 dnxhd_decoder_select="blockdsp idctdsp"
2556 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2557 dolby_e_decoder_select="mdct"
2558 dvvideo_decoder_select="dvprofile idctdsp"
2559 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2560 dxa_decoder_deps="zlib"
2561 dxv_decoder_select="lzf texturedsp"
2562 eac3_decoder_select="ac3_decoder"
2563 eac3_encoder_select="ac3_encoder"
2564 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2565 eatgq_decoder_select="aandcttables"
2566 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2567 exr_decoder_deps="zlib"
2568 ffv1_decoder_select="rangecoder"
2569 ffv1_encoder_select="rangecoder"
2570 ffvhuff_decoder_select="huffyuv_decoder"
2571 ffvhuff_encoder_select="huffyuv_encoder"
2572 fic_decoder_select="golomb"
2573 flac_decoder_select="flacdsp"
2574 flac_encoder_select="bswapdsp flacdsp lpc"
2575 flashsv2_decoder_deps="zlib"
2576 flashsv2_encoder_deps="zlib"
2577 flashsv_decoder_deps="zlib"
2578 flashsv_encoder_deps="zlib"
2579 flv_decoder_select="h263_decoder"
2580 flv_encoder_select="h263_encoder"
2581 fourxm_decoder_select="blockdsp bswapdsp"
2582 fraps_decoder_select="bswapdsp huffman"
2583 g2m_decoder_deps="zlib"
2584 g2m_decoder_select="blockdsp idctdsp jpegtables"
2585 g729_decoder_select="audiodsp"
2586 h261_decoder_select="mpegvideo"
2587 h261_encoder_select="aandcttables mpegvideoenc"
2588 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2589 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2590 h263i_decoder_select="h263_decoder"
2591 h263p_decoder_select="h263_decoder"
2592 h263p_encoder_select="h263_encoder"
2593 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2594 h264_decoder_suggest="error_resilience"
2595 hap_decoder_select="snappy texturedsp"
2596 hap_encoder_deps="libsnappy"
2597 hap_encoder_select="texturedspenc"
2598 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2599 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2600 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2601 iac_decoder_select="imc_decoder"
2602 imc_decoder_select="bswapdsp fft mdct sinewin"
2603 indeo3_decoder_select="hpeldsp"
2604 indeo4_decoder_select="ividsp"
2605 indeo5_decoder_select="ividsp"
2606 interplay_video_decoder_select="hpeldsp"
2607 jpegls_decoder_select="mjpeg_decoder"
2608 jv_decoder_select="blockdsp"
2609 lagarith_decoder_select="llviddsp"
2610 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2611 magicyuv_decoder_select="llviddsp"
2612 magicyuv_encoder_select="llvidencdsp"
2613 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2614 metasound_decoder_select="lsp mdct sinewin"
2615 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2616 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2617 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2618 mjpegb_decoder_select="mjpeg_decoder"
2619 mlp_decoder_select="mlp_parser"
2620 mlp_encoder_select="lpc"
2621 motionpixels_decoder_select="bswapdsp"
2622 mp1_decoder_select="mpegaudio"
2623 mp1float_decoder_select="mpegaudio"
2624 mp2_decoder_select="mpegaudio"
2625 mp2float_decoder_select="mpegaudio"
2626 mp3_decoder_select="mpegaudio"
2627 mp3adu_decoder_select="mpegaudio"
2628 mp3adufloat_decoder_select="mpegaudio"
2629 mp3float_decoder_select="mpegaudio"
2630 mp3on4_decoder_select="mpegaudio"
2631 mp3on4float_decoder_select="mpegaudio"
2632 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2633 mpc8_decoder_select="mpegaudiodsp"
2634 mpegvideo_decoder_select="mpegvideo"
2635 mpeg1video_decoder_select="mpegvideo"
2636 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2637 mpeg2video_decoder_select="mpegvideo"
2638 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2639 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2640 mpeg4_encoder_select="h263_encoder"
2641 msa1_decoder_select="mss34dsp"
2642 mscc_decoder_deps="zlib"
2643 msmpeg4v1_decoder_select="h263_decoder"
2644 msmpeg4v2_decoder_select="h263_decoder"
2645 msmpeg4v2_encoder_select="h263_encoder"
2646 msmpeg4v3_decoder_select="h263_decoder"
2647 msmpeg4v3_encoder_select="h263_encoder"
2648 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2649 mts2_decoder_select="mss34dsp"
2650 mxpeg_decoder_select="mjpeg_decoder"
2651 nellymoser_decoder_select="mdct sinewin"
2652 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2653 nuv_decoder_select="idctdsp lzo"
2654 on2avc_decoder_select="mdct"
2655 opus_decoder_deps="swresample"
2656 opus_decoder_select="mdct15"
2657 opus_encoder_select="audio_frame_queue mdct15"
2658 png_decoder_deps="zlib"
2659 png_encoder_deps="zlib"
2660 png_encoder_select="llvidencdsp"
2661 prores_decoder_select="blockdsp idctdsp"
2662 prores_encoder_select="fdctdsp"
2663 qcelp_decoder_select="lsp"
2664 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2665 ra_144_decoder_select="audiodsp"
2666 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2667 ralf_decoder_select="golomb"
2668 rawvideo_decoder_select="bswapdsp"
2669 rscc_decoder_deps="zlib"
2670 rtjpeg_decoder_select="me_cmp"
2671 rv10_decoder_select="h263_decoder"
2672 rv10_encoder_select="h263_encoder"
2673 rv20_decoder_select="h263_decoder"
2674 rv20_encoder_select="h263_encoder"
2675 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2676 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2677 screenpresso_decoder_deps="zlib"
2678 shorten_decoder_select="bswapdsp"
2679 sipr_decoder_select="lsp"
2680 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2681 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2682 sonic_decoder_select="golomb rangecoder"
2683 sonic_encoder_select="golomb rangecoder"
2684 sonic_ls_encoder_select="golomb rangecoder"
2685 sp5x_decoder_select="mjpeg_decoder"
2686 srgc_decoder_deps="zlib"
2687 svq1_decoder_select="hpeldsp"
2688 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2689 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2690 svq3_decoder_suggest="zlib"
2691 tak_decoder_select="audiodsp"
2692 tdsc_decoder_deps="zlib"
2693 tdsc_decoder_select="mjpeg_decoder"
2694 theora_decoder_select="vp3_decoder"
2695 thp_decoder_select="mjpeg_decoder"
2696 tiff_decoder_suggest="zlib lzma"
2697 tiff_encoder_suggest="zlib"
2698 truehd_decoder_select="mlp_parser"
2699 truehd_encoder_select="lpc"
2700 truemotion2_decoder_select="bswapdsp"
2701 truespeech_decoder_select="bswapdsp"
2702 tscc_decoder_deps="zlib"
2703 twinvq_decoder_select="mdct lsp sinewin"
2704 txd_decoder_select="texturedsp"
2705 utvideo_decoder_select="bswapdsp llviddsp"
2706 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2707 vble_decoder_select="llviddsp"
2708 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2709 vc1image_decoder_select="vc1_decoder"
2710 vorbis_decoder_select="mdct"
2711 vorbis_encoder_select="audio_frame_queue mdct"
2712 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2713 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2714 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2715 vp6a_decoder_select="vp6_decoder"
2716 vp6f_decoder_select="vp6_decoder"
2717 vp7_decoder_select="h264pred videodsp vp8dsp"
2718 vp8_decoder_select="h264pred videodsp vp8dsp"
2719 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2720 webp_decoder_select="vp8_decoder exif"
2721 wmalossless_decoder_select="llauddsp"
2722 wmapro_decoder_select="mdct sinewin wma_freqs"
2723 wmav1_decoder_select="mdct sinewin wma_freqs"
2724 wmav1_encoder_select="mdct sinewin wma_freqs"
2725 wmav2_decoder_select="mdct sinewin wma_freqs"
2726 wmav2_encoder_select="mdct sinewin wma_freqs"
2727 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2728 wmv1_decoder_select="h263_decoder"
2729 wmv1_encoder_select="h263_encoder"
2730 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2731 wmv2_encoder_select="h263_encoder wmv2dsp"
2732 wmv3_decoder_select="vc1_decoder"
2733 wmv3image_decoder_select="wmv3_decoder"
2734 xma1_decoder_select="wmapro_decoder"
2735 xma2_decoder_select="wmapro_decoder"
2736 zerocodec_decoder_deps="zlib"
2737 zlib_decoder_deps="zlib"
2738 zlib_encoder_deps="zlib"
2739 zmbv_decoder_deps="zlib"
2740 zmbv_encoder_deps="zlib"
2741
2742 # hardware accelerators
2743 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2744 cuda_deps="ffnvcodec"
2745 cuvid_deps="ffnvcodec"
2746 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2747 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2748 ffnvcodec_deps_any="libdl LoadLibrary"
2749 nvdec_deps="ffnvcodec"
2750 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2751 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2752 xvmc_deps="X11_extensions_XvMClib_h"
2753
2754 h263_vaapi_hwaccel_deps="vaapi"
2755 h263_vaapi_hwaccel_select="h263_decoder"
2756 h263_videotoolbox_hwaccel_deps="videotoolbox"
2757 h263_videotoolbox_hwaccel_select="h263_decoder"
2758 h264_d3d11va_hwaccel_deps="d3d11va"
2759 h264_d3d11va_hwaccel_select="h264_decoder"
2760 h264_d3d11va2_hwaccel_deps="d3d11va"
2761 h264_d3d11va2_hwaccel_select="h264_decoder"
2762 h264_dxva2_hwaccel_deps="dxva2"
2763 h264_dxva2_hwaccel_select="h264_decoder"
2764 h264_nvdec_hwaccel_deps="nvdec"
2765 h264_nvdec_hwaccel_select="h264_decoder"
2766 h264_vaapi_hwaccel_deps="vaapi"
2767 h264_vaapi_hwaccel_select="h264_decoder"
2768 h264_vdpau_hwaccel_deps="vdpau"
2769 h264_vdpau_hwaccel_select="h264_decoder"
2770 h264_videotoolbox_hwaccel_deps="videotoolbox"
2771 h264_videotoolbox_hwaccel_select="h264_decoder"
2772 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2773 hevc_d3d11va_hwaccel_select="hevc_decoder"
2774 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2775 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2776 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2777 hevc_dxva2_hwaccel_select="hevc_decoder"
2778 hevc_nvdec_hwaccel_deps="nvdec"
2779 hevc_nvdec_hwaccel_select="hevc_decoder"
2780 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2781 hevc_vaapi_hwaccel_select="hevc_decoder"
2782 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2783 hevc_vdpau_hwaccel_select="hevc_decoder"
2784 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2785 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2786 mjpeg_nvdec_hwaccel_deps="nvdec"
2787 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2788 mjpeg_vaapi_hwaccel_deps="vaapi"
2789 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2790 mpeg_xvmc_hwaccel_deps="xvmc"
2791 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2792 mpeg1_nvdec_hwaccel_deps="nvdec"
2793 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2794 mpeg1_vdpau_hwaccel_deps="vdpau"
2795 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2796 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2797 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2798 mpeg1_xvmc_hwaccel_deps="xvmc"
2799 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2800 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2801 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2802 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2803 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2804 mpeg2_dxva2_hwaccel_deps="dxva2"
2805 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2806 mpeg2_nvdec_hwaccel_deps="nvdec"
2807 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2808 mpeg2_vaapi_hwaccel_deps="vaapi"
2809 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2810 mpeg2_vdpau_hwaccel_deps="vdpau"
2811 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2812 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2813 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2814 mpeg2_xvmc_hwaccel_deps="xvmc"
2815 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2816 mpeg4_nvdec_hwaccel_deps="nvdec"
2817 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2818 mpeg4_vaapi_hwaccel_deps="vaapi"
2819 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2820 mpeg4_vdpau_hwaccel_deps="vdpau"
2821 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2822 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2823 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2824 vc1_d3d11va_hwaccel_deps="d3d11va"
2825 vc1_d3d11va_hwaccel_select="vc1_decoder"
2826 vc1_d3d11va2_hwaccel_deps="d3d11va"
2827 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2828 vc1_dxva2_hwaccel_deps="dxva2"
2829 vc1_dxva2_hwaccel_select="vc1_decoder"
2830 vc1_nvdec_hwaccel_deps="nvdec"
2831 vc1_nvdec_hwaccel_select="vc1_decoder"
2832 vc1_vaapi_hwaccel_deps="vaapi"
2833 vc1_vaapi_hwaccel_select="vc1_decoder"
2834 vc1_vdpau_hwaccel_deps="vdpau"
2835 vc1_vdpau_hwaccel_select="vc1_decoder"
2836 vp8_nvdec_hwaccel_deps="nvdec"
2837 vp8_nvdec_hwaccel_select="vp8_decoder"
2838 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2839 vp8_vaapi_hwaccel_select="vp8_decoder"
2840 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2841 vp9_d3d11va_hwaccel_select="vp9_decoder"
2842 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2843 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2844 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2845 vp9_dxva2_hwaccel_select="vp9_decoder"
2846 vp9_nvdec_hwaccel_deps="nvdec"
2847 vp9_nvdec_hwaccel_select="vp9_decoder"
2848 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2849 vp9_vaapi_hwaccel_select="vp9_decoder"
2850 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2851 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2852 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2853 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2854 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2855 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2856
2857 # hardware-accelerated codecs
2858 omx_deps="libdl pthreads"
2859 omx_rpi_select="omx"
2860 qsv_deps="libmfx"
2861 qsvdec_select="qsv"
2862 qsvenc_select="qsv"
2863 qsvvpp_select="qsv"
2864 vaapi_encode_deps="vaapi"
2865 v4l2_m2m_deps_any="linux_videodev2_h"
2866
2867 hwupload_cuda_filter_deps="ffnvcodec"
2868 scale_npp_filter_deps="ffnvcodec libnpp"
2869 scale_cuda_filter_deps="cuda_sdk"
2870 thumbnail_cuda_filter_deps="cuda_sdk"
2871
2872 amf_deps_any="libdl LoadLibrary"
2873 nvenc_deps="ffnvcodec"
2874 nvenc_deps_any="libdl LoadLibrary"
2875 nvenc_encoder_deps="nvenc"
2876
2877 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2878 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2879 h264_amf_encoder_deps="amf"
2880 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2881 h264_cuvid_decoder_deps="cuvid"
2882 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2883 h264_mediacodec_decoder_deps="mediacodec"
2884 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2885 h264_mmal_decoder_deps="mmal"
2886 h264_nvenc_encoder_deps="nvenc"
2887 h264_omx_encoder_deps="omx"
2888 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2889 h264_qsv_encoder_select="qsvenc"
2890 h264_rkmpp_decoder_deps="rkmpp"
2891 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2892 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2893 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2894 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2895 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2896 hevc_amf_encoder_deps="amf"
2897 hevc_cuvid_decoder_deps="cuvid"
2898 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2899 hevc_mediacodec_decoder_deps="mediacodec"
2900 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2901 hevc_nvenc_encoder_deps="nvenc"
2902 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2903 hevc_qsv_encoder_select="hevcparse qsvenc"
2904 hevc_rkmpp_decoder_deps="rkmpp"
2905 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2906 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2907 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2908 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2909 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2910 mjpeg_cuvid_decoder_deps="cuvid"
2911 mjpeg_qsv_encoder_deps="libmfx"
2912 mjpeg_qsv_encoder_select="qsvenc"
2913 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2914 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2915 mpeg1_cuvid_decoder_deps="cuvid"
2916 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2917 mpeg2_crystalhd_decoder_select="crystalhd"
2918 mpeg2_cuvid_decoder_deps="cuvid"
2919 mpeg2_mmal_decoder_deps="mmal"
2920 mpeg2_mediacodec_decoder_deps="mediacodec"
2921 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2922 mpeg2_qsv_encoder_select="qsvenc"
2923 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2924 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2925 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2926 mpeg4_crystalhd_decoder_select="crystalhd"
2927 mpeg4_cuvid_decoder_deps="cuvid"
2928 mpeg4_mediacodec_decoder_deps="mediacodec"
2929 mpeg4_mmal_decoder_deps="mmal"
2930 mpeg4_omx_encoder_deps="omx"
2931 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2932 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2933 msmpeg4_crystalhd_decoder_select="crystalhd"
2934 nvenc_h264_encoder_select="h264_nvenc_encoder"
2935 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2936 vc1_crystalhd_decoder_select="crystalhd"
2937 vc1_cuvid_decoder_deps="cuvid"
2938 vc1_mmal_decoder_deps="mmal"
2939 vc1_qsv_decoder_select="qsvdec vc1_parser"
2940 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2941 vp8_cuvid_decoder_deps="cuvid"
2942 vp8_mediacodec_decoder_deps="mediacodec"
2943 vp8_qsv_decoder_select="qsvdec vp8_parser"
2944 vp8_rkmpp_decoder_deps="rkmpp"
2945 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2946 vp8_vaapi_encoder_select="vaapi_encode"
2947 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2948 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2949 vp9_cuvid_decoder_deps="cuvid"
2950 vp9_mediacodec_decoder_deps="mediacodec"
2951 vp9_rkmpp_decoder_deps="rkmpp"
2952 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2953 vp9_vaapi_encoder_select="vaapi_encode"
2954 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2955 wmv3_crystalhd_decoder_select="crystalhd"
2956
2957 # parsers
2958 aac_parser_select="adts_header"
2959 h264_parser_select="golomb h264dsp h264parse"
2960 hevc_parser_select="hevcparse"
2961 mpegaudio_parser_select="mpegaudioheader"
2962 mpegvideo_parser_select="mpegvideo"
2963 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2964 vc1_parser_select="vc1dsp"
2965
2966 # bitstream_filters
2967 aac_adtstoasc_bsf_select="adts_header"
2968 filter_units_bsf_select="cbs"
2969 h264_metadata_bsf_deps="const_nan"
2970 h264_metadata_bsf_select="cbs_h264"
2971 h264_redundant_pps_bsf_select="cbs_h264"
2972 hevc_metadata_bsf_select="cbs_h265"
2973 mjpeg2jpeg_bsf_select="jpegtables"
2974 mpeg2_metadata_bsf_select="cbs_mpeg2"
2975 trace_headers_bsf_select="cbs"
2976
2977 # external libraries
2978 aac_at_decoder_deps="audiotoolbox"
2979 aac_at_decoder_select="aac_adtstoasc_bsf"
2980 ac3_at_decoder_deps="audiotoolbox"
2981 ac3_at_decoder_select="ac3_parser"
2982 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2983 alac_at_decoder_deps="audiotoolbox"
2984 amr_nb_at_decoder_deps="audiotoolbox"
2985 avisynth_deps_any="libdl LoadLibrary"
2986 avisynth_demuxer_deps="avisynth"
2987 avisynth_demuxer_select="riffdec"
2988 eac3_at_decoder_deps="audiotoolbox"
2989 eac3_at_decoder_select="ac3_parser"
2990 gsm_ms_at_decoder_deps="audiotoolbox"
2991 ilbc_at_decoder_deps="audiotoolbox"
2992 mp1_at_decoder_deps="audiotoolbox"
2993 mp2_at_decoder_deps="audiotoolbox"
2994 mp3_at_decoder_deps="audiotoolbox"
2995 mp1_at_decoder_select="mpegaudioheader"
2996 mp2_at_decoder_select="mpegaudioheader"
2997 mp3_at_decoder_select="mpegaudioheader"
2998 pcm_alaw_at_decoder_deps="audiotoolbox"
2999 pcm_mulaw_at_decoder_deps="audiotoolbox"
3000 qdmc_at_decoder_deps="audiotoolbox"
3001 qdm2_at_decoder_deps="audiotoolbox"
3002 aac_at_encoder_deps="audiotoolbox"
3003 aac_at_encoder_select="audio_frame_queue"
3004 alac_at_encoder_deps="audiotoolbox"
3005 alac_at_encoder_select="audio_frame_queue"
3006 ilbc_at_encoder_deps="audiotoolbox"
3007 ilbc_at_encoder_select="audio_frame_queue"
3008 pcm_alaw_at_encoder_deps="audiotoolbox"
3009 pcm_alaw_at_encoder_select="audio_frame_queue"
3010 pcm_mulaw_at_encoder_deps="audiotoolbox"
3011 pcm_mulaw_at_encoder_select="audio_frame_queue"
3012 chromaprint_muxer_deps="chromaprint"
3013 h264_videotoolbox_encoder_deps="pthreads"
3014 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3015 hevc_videotoolbox_encoder_deps="pthreads"
3016 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3017 libaom_av1_decoder_deps="libaom"
3018 libaom_av1_encoder_deps="libaom"
3019 libcelt_decoder_deps="libcelt"
3020 libcodec2_decoder_deps="libcodec2"
3021 libcodec2_encoder_deps="libcodec2"
3022 libfdk_aac_decoder_deps="libfdk_aac"
3023 libfdk_aac_encoder_deps="libfdk_aac"
3024 libfdk_aac_encoder_select="audio_frame_queue"
3025 libgme_demuxer_deps="libgme"
3026 libgsm_decoder_deps="libgsm"
3027 libgsm_encoder_deps="libgsm"
3028 libgsm_ms_decoder_deps="libgsm"
3029 libgsm_ms_encoder_deps="libgsm"
3030 libilbc_decoder_deps="libilbc"
3031 libilbc_encoder_deps="libilbc"
3032 libkvazaar_encoder_deps="libkvazaar"
3033 libmodplug_demuxer_deps="libmodplug"
3034 libmp3lame_encoder_deps="libmp3lame"
3035 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3036 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3037 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3038 libopencore_amrnb_encoder_select="audio_frame_queue"
3039 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3040 libopenh264_decoder_deps="libopenh264"
3041 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3042 libopenh264_encoder_deps="libopenh264"
3043 libopenjpeg_decoder_deps="libopenjpeg"
3044 libopenjpeg_encoder_deps="libopenjpeg"
3045 libopenmpt_demuxer_deps="libopenmpt"
3046 libopus_decoder_deps="libopus"
3047 libopus_encoder_deps="libopus"
3048 libopus_encoder_select="audio_frame_queue"
3049 librsvg_decoder_deps="librsvg"
3050 libshine_encoder_deps="libshine"
3051 libshine_encoder_select="audio_frame_queue"
3052 libspeex_decoder_deps="libspeex"
3053 libspeex_encoder_deps="libspeex"
3054 libspeex_encoder_select="audio_frame_queue"
3055 libtheora_encoder_deps="libtheora"
3056 libtwolame_encoder_deps="libtwolame"
3057 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3058 libvorbis_decoder_deps="libvorbis"
3059 libvorbis_encoder_deps="libvorbis libvorbisenc"
3060 libvorbis_encoder_select="audio_frame_queue"
3061 libvpx_vp8_decoder_deps="libvpx"
3062 libvpx_vp8_encoder_deps="libvpx"
3063 libvpx_vp9_decoder_deps="libvpx"
3064 libvpx_vp9_encoder_deps="libvpx"
3065 libwavpack_encoder_deps="libwavpack"
3066 libwavpack_encoder_select="audio_frame_queue"
3067 libwebp_encoder_deps="libwebp"
3068 libwebp_anim_encoder_deps="libwebp"
3069 libx262_encoder_deps="libx262"
3070 libx264_encoder_deps="libx264"
3071 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3072 libx264rgb_encoder_select="libx264_encoder"
3073 libx265_encoder_deps="libx265"
3074 libxavs_encoder_deps="libxavs"
3075 libxvid_encoder_deps="libxvid"
3076 libzvbi_teletext_decoder_deps="libzvbi"
3077 videotoolbox_suggest="coreservices"
3078 videotoolbox_deps="corefoundation coremedia corevideo"
3079 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3080
3081 # demuxers / muxers
3082 ac3_demuxer_select="ac3_parser"
3083 aiff_muxer_select="iso_media"
3084 asf_demuxer_select="riffdec"
3085 asf_o_demuxer_select="riffdec"
3086 asf_muxer_select="riffenc"
3087 asf_stream_muxer_select="asf_muxer"
3088 avi_demuxer_select="iso_media riffdec exif"
3089 avi_muxer_select="riffenc"
3090 caf_demuxer_select="iso_media riffdec"
3091 caf_muxer_select="iso_media"
3092 dash_muxer_select="mp4_muxer"
3093 dash_demuxer_deps="libxml2"
3094 dirac_demuxer_select="dirac_parser"
3095 dts_demuxer_select="dca_parser"
3096 dtshd_demuxer_select="dca_parser"
3097 dv_demuxer_select="dvprofile"
3098 dv_muxer_select="dvprofile"
3099 dxa_demuxer_select="riffdec"
3100 eac3_demuxer_select="ac3_parser"
3101 f4v_muxer_select="mov_muxer"
3102 fifo_muxer_deps="threads"
3103 flac_demuxer_select="flac_parser"
3104 hds_muxer_select="flv_muxer"
3105 hls_muxer_select="mpegts_muxer"
3106 hls_muxer_suggest="gcrypt openssl"
3107 image2_alias_pix_demuxer_select="image2_demuxer"
3108 image2_brender_pix_demuxer_select="image2_demuxer"
3109 ipod_muxer_select="mov_muxer"
3110 ismv_muxer_select="mov_muxer"
3111 matroska_audio_muxer_select="matroska_muxer"
3112 matroska_demuxer_select="iso_media riffdec"
3113 matroska_demuxer_suggest="bzlib lzo zlib"
3114 matroska_muxer_select="iso_media riffenc"
3115 mmf_muxer_select="riffenc"
3116 mov_demuxer_select="iso_media riffdec"
3117 mov_demuxer_suggest="zlib"
3118 mov_muxer_select="iso_media riffenc rtpenc_chain"
3119 mp3_demuxer_select="mpegaudio_parser"
3120 mp3_muxer_select="mpegaudioheader"
3121 mp4_muxer_select="mov_muxer"
3122 mpegts_demuxer_select="iso_media"
3123 mpegts_muxer_select="adts_muxer latm_muxer"
3124 mpegtsraw_demuxer_select="mpegts_demuxer"
3125 mxf_d10_muxer_select="mxf_muxer"
3126 mxf_opatom_muxer_select="mxf_muxer"
3127 nut_muxer_select="riffenc"
3128 nuv_demuxer_select="riffdec"
3129 oga_muxer_select="ogg_muxer"
3130 ogg_demuxer_select="dirac_parse"
3131 ogv_muxer_select="ogg_muxer"
3132 opus_muxer_select="ogg_muxer"
3133 psp_muxer_select="mov_muxer"
3134 rtp_demuxer_select="sdp_demuxer"
3135 rtp_muxer_select="golomb"
3136 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3137 rtsp_demuxer_select="http_protocol rtpdec"
3138 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3139 sap_demuxer_select="sdp_demuxer"
3140 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3141 sdp_demuxer_select="rtpdec"
3142 smoothstreaming_muxer_select="ismv_muxer"
3143 spdif_demuxer_select="adts_header"
3144 spdif_muxer_select="adts_header"
3145 spx_muxer_select="ogg_muxer"
3146 swf_demuxer_suggest="zlib"
3147 tak_demuxer_select="tak_parser"
3148 tg2_muxer_select="mov_muxer"
3149 tgp_muxer_select="mov_muxer"
3150 vobsub_demuxer_select="mpegps_demuxer"
3151 w64_demuxer_select="wav_demuxer"
3152 w64_muxer_select="wav_muxer"
3153 wav_demuxer_select="riffdec"
3154 wav_muxer_select="riffenc"
3155 webm_muxer_select="iso_media riffenc"
3156 webm_dash_manifest_demuxer_select="matroska_demuxer"
3157 wtv_demuxer_select="mpegts_demuxer riffdec"
3158 wtv_muxer_select="mpegts_muxer riffenc"
3159 xmv_demuxer_select="riffdec"
3160 xwma_demuxer_select="riffdec"
3161
3162 # indevs / outdevs
3163 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3164 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3165 alsa_indev_deps="alsa"
3166 alsa_outdev_deps="alsa"
3167 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3168 avfoundation_indev_suggest="coregraphics applicationservices"
3169 avfoundation_indev_extralibs="-framework Foundation"
3170 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3171 caca_outdev_deps="libcaca"
3172 decklink_deps_any="libdl LoadLibrary"
3173 decklink_indev_deps="decklink threads"
3174 decklink_indev_extralibs="-lstdc++"
3175 decklink_outdev_deps="decklink threads"
3176 decklink_outdev_extralibs="-lstdc++"
3177 libndi_newtek_indev_deps="libndi_newtek"
3178 libndi_newtek_indev_extralibs="-lndi"
3179 libndi_newtek_outdev_deps="libndi_newtek"
3180 libndi_newtek_outdev_extralibs="-lndi"
3181 dshow_indev_deps="IBaseFilter"
3182 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3183 fbdev_indev_deps="linux_fb_h"
3184 fbdev_outdev_deps="linux_fb_h"
3185 gdigrab_indev_deps="CreateDIBSection"
3186 gdigrab_indev_extralibs="-lgdi32"
3187 gdigrab_indev_select="bmp_decoder"
3188 iec61883_indev_deps="libiec61883"
3189 jack_indev_deps="libjack"
3190 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3191 kmsgrab_indev_deps="libdrm"
3192 lavfi_indev_deps="avfilter"
3193 libcdio_indev_deps="libcdio"
3194 libdc1394_indev_deps="libdc1394"
3195 openal_indev_deps="openal"
3196 opengl_outdev_deps="opengl"
3197 oss_indev_deps_any="sys_soundcard_h"
3198 oss_outdev_deps_any="sys_soundcard_h"
3199 pulse_indev_deps="libpulse"
3200 pulse_outdev_deps="libpulse"
3201 sdl2_outdev_deps="sdl2"
3202 sndio_indev_deps="sndio"
3203 sndio_outdev_deps="sndio"
3204 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3205 v4l2_indev_suggest="libv4l2"
3206 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3207 v4l2_outdev_suggest="libv4l2"
3208 vfwcap_indev_deps="vfw32 vfwcap_defines"
3209 xcbgrab_indev_deps="libxcb"
3210 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3211 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3212 xv_outdev_extralibs="-lXv -lX11 -lXext"
3213
3214 # protocols
3215 async_protocol_deps="threads"
3216 bluray_protocol_deps="libbluray"
3217 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3218 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3219 ffrtmpcrypt_protocol_select="tcp_protocol"
3220 ffrtmphttp_protocol_conflict="librtmp_protocol"
3221 ffrtmphttp_protocol_select="http_protocol"
3222 ftp_protocol_select="tcp_protocol"
3223 gopher_protocol_select="network"
3224 http_protocol_select="tcp_protocol"
3225 http_protocol_suggest="zlib"
3226 httpproxy_protocol_select="tcp_protocol"
3227 httpproxy_protocol_suggest="zlib"
3228 https_protocol_select="tls_protocol"
3229 https_protocol_suggest="zlib"
3230 icecast_protocol_select="http_protocol"
3231 librtmp_protocol_deps="librtmp"
3232 librtmpe_protocol_deps="librtmp"
3233 librtmps_protocol_deps="librtmp"
3234 librtmpt_protocol_deps="librtmp"
3235 librtmpte_protocol_deps="librtmp"
3236 libsmbclient_protocol_deps="libsmbclient gplv3"
3237 libssh_protocol_deps="libssh"
3238 libtls_conflict="openssl gnutls"
3239 mmsh_protocol_select="http_protocol"
3240 mmst_protocol_select="network"
3241 rtmp_protocol_conflict="librtmp_protocol"
3242 rtmp_protocol_select="tcp_protocol"
3243 rtmp_protocol_suggest="zlib"
3244 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3245 rtmpe_protocol_suggest="zlib"
3246 rtmps_protocol_conflict="librtmp_protocol"
3247 rtmps_protocol_select="tls_protocol"
3248 rtmps_protocol_suggest="zlib"
3249 rtmpt_protocol_select="ffrtmphttp_protocol"
3250 rtmpt_protocol_suggest="zlib"
3251 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3252 rtmpte_protocol_suggest="zlib"
3253 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3254 rtmpts_protocol_suggest="zlib"
3255 rtp_protocol_select="udp_protocol"
3256 schannel_conflict="openssl gnutls libtls"
3257 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3258 sctp_protocol_select="network"
3259 securetransport_conflict="openssl gnutls libtls"
3260 srtp_protocol_select="rtp_protocol srtp"
3261 tcp_protocol_select="network"
3262 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3263 tls_protocol_select="tcp_protocol"
3264 udp_protocol_select="network"
3265 udplite_protocol_select="network"
3266 unix_protocol_deps="sys_un_h"
3267 unix_protocol_select="network"
3268
3269 # filters
3270 afftfilt_filter_deps="avcodec"
3271 afftfilt_filter_select="fft"
3272 afir_filter_deps="avcodec"
3273 afir_filter_select="fft"
3274 amovie_filter_deps="avcodec avformat"
3275 aresample_filter_deps="swresample"
3276 ass_filter_deps="libass"
3277 atempo_filter_deps="avcodec"
3278 atempo_filter_select="rdft"
3279 avgblur_opencl_filter_deps="opencl"
3280 azmq_filter_deps="libzmq"
3281 blackframe_filter_deps="gpl"
3282 boxblur_filter_deps="gpl"
3283 bs2b_filter_deps="libbs2b"
3284 colormatrix_filter_deps="gpl"
3285 convolution_opencl_filter_deps="opencl"
3286 convolve_filter_deps="avcodec"
3287 convolve_filter_select="fft"
3288 coreimage_filter_deps="coreimage appkit"
3289 coreimage_filter_extralibs="-framework OpenGL"
3290 coreimagesrc_filter_deps="coreimage appkit"
3291 coreimagesrc_filter_extralibs="-framework OpenGL"
3292 cover_rect_filter_deps="avcodec avformat gpl"
3293 cropdetect_filter_deps="gpl"
3294 deconvolve_filter_deps="avcodec"
3295 deconvolve_filter_select="fft"
3296 deinterlace_qsv_filter_deps="libmfx"
3297 deinterlace_vaapi_filter_deps="vaapi"
3298 delogo_filter_deps="gpl"
3299 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3300 deshake_filter_select="pixelutils"
3301 drawtext_filter_deps="libfreetype"
3302 drawtext_filter_suggest="libfontconfig libfribidi"
3303 elbg_filter_deps="avcodec"
3304 eq_filter_deps="gpl"
3305 fftfilt_filter_deps="avcodec"
3306 fftfilt_filter_select="rdft"
3307 find_rect_filter_deps="avcodec avformat gpl"
3308 firequalizer_filter_deps="avcodec"
3309 firequalizer_filter_select="rdft"
3310 flite_filter_deps="libflite"
3311 framerate_filter_select="pixelutils"
3312 frei0r_filter_deps="frei0r libdl"
3313 frei0r_src_filter_deps="frei0r libdl"
3314 fspp_filter_deps="gpl"
3315 geq_filter_deps="gpl"
3316 histeq_filter_deps="gpl"
3317 hqdn3d_filter_deps="gpl"
3318 interlace_filter_deps="gpl"
3319 kerndeint_filter_deps="gpl"
3320 ladspa_filter_deps="ladspa libdl"
3321 lv2_filter_deps="lv2"
3322 mcdeint_filter_deps="avcodec gpl"
3323 movie_filter_deps="avcodec avformat"
3324 mpdecimate_filter_deps="gpl"
3325 mpdecimate_filter_select="pixelutils"
3326 mptestsrc_filter_deps="gpl"
3327 negate_filter_deps="lut_filter"
3328 nnedi_filter_deps="gpl"
3329 ocr_filter_deps="libtesseract"
3330 ocv_filter_deps="libopencv"
3331 openclsrc_filter_deps="opencl"
3332 overlay_opencl_filter_deps="opencl"
3333 overlay_qsv_filter_deps="libmfx"
3334 overlay_qsv_filter_select="qsvvpp"
3335 owdenoise_filter_deps="gpl"
3336 pan_filter_deps="swresample"
3337 perspective_filter_deps="gpl"
3338 phase_filter_deps="gpl"
3339 pp7_filter_deps="gpl"
3340 pp_filter_deps="gpl postproc"
3341 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3342 program_opencl_filter_deps="opencl"
3343 pullup_filter_deps="gpl"
3344 removelogo_filter_deps="avcodec avformat swscale"
3345 repeatfields_filter_deps="gpl"
3346 resample_filter_deps="avresample"
3347 rubberband_filter_deps="librubberband"
3348 sab_filter_deps="gpl swscale"
3349 scale2ref_filter_deps="swscale"
3350 scale_filter_deps="swscale"
3351 scale_qsv_filter_deps="libmfx"
3352 select_filter_select="pixelutils"
3353 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3354 showcqt_filter_deps="avcodec avformat swscale"
3355 showcqt_filter_suggest="libfontconfig libfreetype"
3356 showcqt_filter_select="fft"
3357 showfreqs_filter_deps="avcodec"
3358 showfreqs_filter_select="fft"
3359 showspectrum_filter_deps="avcodec"
3360 showspectrum_filter_select="fft"
3361 showspectrumpic_filter_deps="avcodec"
3362 showspectrumpic_filter_select="fft"
3363 signature_filter_deps="gpl avcodec avformat"
3364 smartblur_filter_deps="gpl swscale"
3365 sofalizer_filter_deps="libmysofa avcodec"
3366 sofalizer_filter_select="fft"
3367 spectrumsynth_filter_deps="avcodec"
3368 spectrumsynth_filter_select="fft"
3369 spp_filter_deps="gpl avcodec"
3370 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3371 stereo3d_filter_deps="gpl"
3372 subtitles_filter_deps="avformat avcodec libass"
3373 super2xsai_filter_deps="gpl"
3374 pixfmts_super2xsai_test_deps="super2xsai_filter"
3375 tinterlace_filter_deps="gpl"
3376 tinterlace_merge_test_deps="tinterlace_filter"
3377 tinterlace_pad_test_deps="tinterlace_filter"
3378 tonemap_filter_deps="const_nan"
3379 unsharp_opencl_filter_deps="opencl"
3380 uspp_filter_deps="gpl avcodec"
3381 vaguedenoiser_filter_deps="gpl"
3382 vidstabdetect_filter_deps="libvidstab"
3383 vidstabtransform_filter_deps="libvidstab"
3384 libvmaf_filter_deps="libvmaf pthreads"
3385 zmq_filter_deps="libzmq"
3386 zoompan_filter_deps="swscale"
3387 zscale_filter_deps="libzimg const_nan"
3388 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3389 vpp_qsv_filter_deps="libmfx"
3390 vpp_qsv_filter_select="qsvvpp"
3391
3392 # examples
3393 avio_dir_cmd_deps="avformat avutil"
3394 avio_reading_deps="avformat avcodec avutil"
3395 decode_audio_example_deps="avcodec avutil"
3396 decode_video_example_deps="avcodec avutil"
3397 demuxing_decoding_example_deps="avcodec avformat avutil"
3398 encode_audio_example_deps="avcodec avutil"
3399 encode_video_example_deps="avcodec avutil"
3400 extract_mvs_example_deps="avcodec avformat avutil"
3401 filter_audio_example_deps="avfilter avutil"
3402 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3403 filtering_video_example_deps="avfilter avcodec avformat avutil"
3404 http_multiclient_example_deps="avformat avutil fork"
3405 hw_decode_example_deps="avcodec avformat avutil"
3406 metadata_example_deps="avformat avutil"
3407 muxing_example_deps="avcodec avformat avutil swscale"
3408 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3409 remuxing_example_deps="avcodec avformat avutil"
3410 resampling_audio_example_deps="avutil swresample"
3411 scaling_video_example_deps="avutil swscale"
3412 transcode_aac_example_deps="avcodec avformat swresample"
3413 transcoding_example_deps="avfilter avcodec avformat avutil"
3414 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3415 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3416
3417 # EXTRALIBS_LIST
3418 cpu_init_extralibs="pthreads_extralibs"
3419 cws2fws_extralibs="zlib_extralibs"
3420
3421 # libraries, in linking order
3422 avcodec_deps="avutil"
3423 avcodec_suggest="libm"
3424 avcodec_select="null_bsf"
3425 avdevice_deps="avformat avcodec avutil"
3426 avdevice_suggest="libm"
3427 avfilter_deps="avutil"
3428 avfilter_suggest="libm"
3429 avformat_deps="avcodec avutil"
3430 avformat_suggest="libm network zlib"
3431 avresample_deps="avutil"
3432 avresample_suggest="libm"
3433 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3434 postproc_deps="avutil gpl"
3435 postproc_suggest="libm"
3436 swresample_deps="avutil"
3437 swresample_suggest="libm libsoxr"
3438 swscale_deps="avutil"
3439 swscale_suggest="libm"
3440
3441 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3442 avfilter_extralibs="pthreads_extralibs"
3443 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3444
3445 # programs
3446 ffmpeg_deps="avcodec avfilter avformat swresample"
3447 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3448                null_filter
3449                trim_filter"
3450 ffmpeg_suggest="ole32 psapi shell32"
3451 ffplay_deps="avcodec avformat swscale swresample sdl2"
3452 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3453 ffplay_suggest="shell32"
3454 ffprobe_deps="avcodec avformat"
3455 ffprobe_suggest="shell32"
3456
3457 # documentation
3458 podpages_deps="perl"
3459 manpages_deps="perl pod2man"
3460 htmlpages_deps="perl"
3461 htmlpages_deps_any="makeinfo_html texi2html"
3462 txtpages_deps="perl makeinfo"
3463 doc_deps_any="manpages htmlpages podpages txtpages"
3464
3465 # default parameters
3466
3467 logfile="ffbuild/config.log"
3468
3469 # installation paths
3470 prefix_default="/usr/local"
3471 bindir_default='${prefix}/bin'
3472 datadir_default='${prefix}/share/ffmpeg'
3473 docdir_default='${prefix}/share/doc/ffmpeg'
3474 incdir_default='${prefix}/include'
3475 libdir_default='${prefix}/lib'
3476 mandir_default='${prefix}/share/man'
3477
3478 # toolchain
3479 ar_default="ar"
3480 cc_default="gcc"
3481 cxx_default="g++"
3482 host_cc_default="gcc"
3483 doxygen_default="doxygen"
3484 install="install"
3485 ln_s_default="ln -s -f"
3486 nm_default="nm -g"
3487 pkg_config_default=pkg-config
3488 ranlib_default="ranlib"
3489 strip_default="strip"
3490 version_script='--version-script'
3491 objformat="elf32"
3492 x86asmexe_default="nasm"
3493 windres_default="windres"
3494 nvcc_default="nvcc"
3495 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3496 striptype="direct"
3497
3498 # OS
3499 target_os_default=$(tolower $(uname -s))
3500 host_os=$target_os_default
3501
3502 # machine
3503 if test "$target_os_default" = aix; then
3504     arch_default=$(uname -p)
3505     strip_default="strip -X32_64"
3506 else
3507     arch_default=$(uname -m)
3508 fi
3509 cpu="generic"
3510 intrinsics="none"
3511
3512 # configurable options
3513 enable $PROGRAM_LIST
3514 enable $DOCUMENT_LIST
3515 enable $EXAMPLE_LIST
3516 enable $(filter_out avresample $LIBRARY_LIST)
3517 enable stripping
3518
3519 enable asm
3520 enable debug
3521 enable doc
3522 enable faan faandct faanidct
3523 enable optimizations
3524 enable runtime_cpudetect
3525 enable safe_bitstream_reader
3526 enable static
3527 enable swscale_alpha
3528 enable valgrind_backtrace
3529
3530 sws_max_filter_size_default=256
3531 set_default sws_max_filter_size
3532
3533 # internal components are enabled by default
3534 enable $EXTRALIBS_LIST
3535
3536 # Avoid external, non-system, libraries getting enabled by dependency resolution
3537 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3538
3539 # build settings
3540 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3541 LIBPREF="lib"
3542 LIBSUF=".a"
3543 FULLNAME='$(NAME)$(BUILDSUF)'
3544 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3545 SLIBPREF="lib"
3546 SLIBSUF=".so"
3547 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3548 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3549 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3550 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3551 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3552 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3553 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3554
3555 asflags_filter=echo
3556 cflags_filter=echo
3557 ldflags_filter=echo
3558
3559 AS_C='-c'
3560 AS_O='-o $@'
3561 CC_C='-c'
3562 CC_E='-E -o $@'
3563 CC_O='-o $@'
3564 CXX_C='-c'
3565 CXX_O='-o $@'
3566 OBJCC_C='-c'
3567 OBJCC_E='-E -o $@'
3568 OBJCC_O='-o $@'
3569 X86ASM_O='-o $@'
3570 LD_O='-o $@'
3571 LD_LIB='-l%'
3572 LD_PATH='-L'
3573 HOSTCC_C='-c'
3574 HOSTCC_E='-E -o $@'
3575 HOSTCC_O='-o $@'
3576 HOSTLD_O='-o $@'
3577 NVCC_C='-c'
3578 NVCC_O='-o $@'
3579
3580 host_extralibs='-lm'
3581 host_cflags_filter=echo
3582 host_ldflags_filter=echo
3583
3584 target_path='$(CURDIR)'
3585
3586 # since the object filename is not given with the -MM flag, the compiler
3587 # is only able to print the basename, and we must add the path ourselves
3588 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3589 DEPFLAGS='-MM'
3590
3591 mkdir -p ffbuild
3592
3593 # find source path
3594 if test -f configure; then
3595     source_path=.
3596 else
3597     source_path=$(cd $(dirname "$0"); pwd)
3598     case "$source_path" in
3599         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3600     esac
3601     test -e "$source_path/config.h" &&
3602         die "Out of tree builds are impossible with config.h in source dir."
3603 fi
3604
3605 for v in "$@"; do
3606     r=${v#*=}
3607     l=${v%"$r"}
3608     r=$(sh_quote "$r")
3609     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3610 done
3611
3612 find_things(){
3613     thing=$1
3614     pattern=$2
3615     file=$source_path/$3
3616     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3617 }
3618
3619 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3620
3621 find_things_extern(){
3622     thing=$1
3623     pattern=$2
3624     file=$source_path/$3
3625     out=${4:-$thing}
3626     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3627 }
3628
3629 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3630 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3631 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3632 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3633 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3634 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3635 CODEC_LIST="
3636     $ENCODER_LIST
3637     $DECODER_LIST
3638 "
3639 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3640 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3641 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3642 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3643
3644 AVCODEC_COMPONENTS_LIST="
3645     $BSF_LIST
3646     $DECODER_LIST
3647     $ENCODER_LIST
3648     $HWACCEL_LIST
3649     $PARSER_LIST
3650 "
3651
3652 AVDEVICE_COMPONENTS_LIST="
3653     $INDEV_LIST
3654     $OUTDEV_LIST
3655 "
3656
3657 AVFILTER_COMPONENTS_LIST="
3658     $FILTER_LIST
3659 "
3660
3661 AVFORMAT_COMPONENTS_LIST="
3662     $DEMUXER_LIST
3663     $MUXER_LIST
3664     $PROTOCOL_LIST
3665 "
3666
3667 ALL_COMPONENTS="
3668     $AVCODEC_COMPONENTS_LIST
3669     $AVDEVICE_COMPONENTS_LIST
3670     $AVFILTER_COMPONENTS_LIST
3671     $AVFORMAT_COMPONENTS_LIST
3672 "
3673
3674 for n in $COMPONENT_LIST; do
3675     v=$(toupper ${n%s})_LIST
3676     eval enable \$$v
3677     eval ${n}_if_any="\$$v"
3678 done
3679
3680 enable $ARCH_EXT_LIST
3681
3682 die_unknown(){
3683     echo "Unknown option \"$1\"."
3684     echo "See $0 --help for available options."
3685     exit 1
3686 }
3687
3688 print_in_columns() {
3689     cols=$(expr $ncols / 24)
3690     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3691 }
3692
3693 show_list() {
3694     suffix=_$1
3695     shift
3696     echo $* | sed s/$suffix//g | print_in_columns
3697     exit 0
3698 }
3699
3700 rand_list(){
3701     IFS=', '
3702     set -- $*
3703     unset IFS
3704     for thing; do
3705         comp=${thing%:*}
3706         prob=${thing#$comp}
3707         prob=${prob#:}
3708         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3709         echo "prob ${prob:-0.5}"
3710         printf '%s\n' $comp
3711     done
3712 }
3713
3714 do_random(){
3715     action=$1
3716     shift
3717     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3718     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3719 }
3720
3721 for opt do
3722     optval="${opt#*=}"
3723     case "$opt" in
3724         --extra-ldflags=*)
3725             add_ldflags $optval
3726         ;;
3727         --extra-ldexeflags=*)
3728             add_ldexeflags $optval
3729         ;;
3730         --extra-ldsoflags=*)
3731             add_ldsoflags $optval
3732         ;;
3733         --extra-ldlibflags=*)
3734             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3735                  "removed in the future. Use --extra-ldsoflags instead."
3736             add_ldsoflags $optval
3737         ;;
3738         --extra-libs=*)
3739             add_extralibs $optval
3740         ;;
3741         --disable-devices)
3742             disable $INDEV_LIST $OUTDEV_LIST
3743         ;;
3744         --enable-debug=*)
3745             debuglevel="$optval"
3746         ;;
3747         --disable-programs)
3748             disable $PROGRAM_LIST
3749         ;;
3750         --disable-everything)
3751             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3752         ;;
3753         --disable-all)
3754             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3755             disable $LIBRARY_LIST $PROGRAM_LIST doc
3756             enable avutil
3757         ;;
3758         --enable-random|--disable-random)
3759             action=${opt%%-random}
3760             do_random ${action#--} $COMPONENT_LIST
3761         ;;
3762         --enable-random=*|--disable-random=*)
3763             action=${opt%%-random=*}
3764             do_random ${action#--} $optval
3765         ;;
3766         --enable-sdl)
3767             enable sdl2
3768         ;;
3769         --enable-*=*|--disable-*=*)
3770             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3771             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3772             eval list=\$$(toupper $thing)_LIST
3773             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3774             list=$(filter "$name" $list)
3775             [ "$list" = "" ] && warn "Option $opt did not match anything"
3776             $action $list
3777         ;;
3778         --enable-yasm|--disable-yasm)
3779             warn "The ${opt} option is only provided for compatibility and will be\n"\
3780                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3781             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3782         ;;
3783         --yasmexe=*)
3784             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3785                  "removed in the future. Use --x86asmexe instead."
3786             x86asmexe="$optval"
3787         ;;
3788         --enable-?*|--disable-?*)
3789             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3790             if is_in $option $COMPONENT_LIST; then
3791                 test $action = disable && action=unset
3792                 eval $action \$$(toupper ${option%s})_LIST
3793             elif is_in $option $CMDLINE_SELECT; then
3794                 $action $option
3795             else
3796                 die_unknown $opt
3797             fi
3798         ;;
3799         --list-*)
3800             NAME="${opt#--list-}"
3801             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3802             NAME=${NAME%s}
3803             eval show_list $NAME \$$(toupper $NAME)_LIST
3804         ;;
3805         --help|-h) show_help
3806         ;;
3807         --quiet|-q) quiet=yes
3808         ;;
3809         --fatal-warnings) enable fatal_warnings
3810         ;;
3811         --libfuzzer=*)
3812             libfuzzer_path="$optval"
3813         ;;
3814         *)
3815             optname="${opt%%=*}"
3816             optname="${optname#--}"
3817             optname=$(echo "$optname" | sed 's/-/_/g')
3818             if is_in $optname $CMDLINE_SET; then
3819                 eval $optname='$optval'
3820             elif is_in $optname $CMDLINE_APPEND; then
3821                 append $optname "$optval"
3822             else
3823                 die_unknown $opt
3824             fi
3825         ;;
3826     esac
3827 done
3828
3829 for e in $env; do
3830     eval "export $e"
3831 done
3832
3833 if disabled autodetect; then
3834
3835     # Unless iconv is explicitely disabled by the user, we still want to probe
3836     # for the iconv from the libc.
3837     disabled iconv || enable libc_iconv
3838
3839     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3840     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3841 fi
3842 # Mark specifically enabled, but normally autodetected libraries as requested.
3843 for lib in $AUTODETECT_LIBS; do
3844     enabled $lib && request $lib
3845 done
3846 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3847 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3848 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3849
3850 disabled logging && logfile=/dev/null
3851
3852 # command line configuration sanity checks
3853
3854 # we need to build at least one lib type
3855 if ! enabled_any static shared; then
3856     cat <<EOF
3857 At least one library type must be built.
3858 Specify --enable-static to build the static libraries or --enable-shared to
3859 build the shared libraries as well. To only build the shared libraries specify
3860 --disable-static in addition to --enable-shared.
3861 EOF
3862     exit 1
3863 fi
3864
3865 die_license_disabled() {
3866     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3867 }
3868
3869 die_license_disabled_gpl() {
3870     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3871 }
3872
3873 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3874 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3875
3876 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3877 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3878
3879 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3880
3881 if enabled nonfree; then
3882     license="nonfree and unredistributable"
3883 elif enabled gplv3; then
3884     license="GPL version 3 or later"
3885 elif enabled lgplv3; then
3886     license="LGPL version 3 or later"
3887 elif enabled gpl; then
3888     license="GPL version 2 or later"
3889 else
3890     license="LGPL version 2.1 or later"
3891 fi
3892
3893 enabled_all gnutls openssl &&
3894     die "GnuTLS and OpenSSL must not be enabled at the same time."
3895
3896 # Disable all the library-specific components if the library itself
3897 # is disabled, see AVCODEC_LIST and following _LIST variables.
3898
3899 disable_components(){
3900     disabled ${1} && disable $(
3901         eval components="\$$(toupper ${1})_COMPONENTS"
3902         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3903     )
3904 }
3905
3906 map 'disable_components $v' $LIBRARY_LIST
3907
3908 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3909 set >> $logfile
3910
3911 test -n "$valgrind" && toolchain="valgrind-memcheck"
3912
3913 enabled ossfuzz && {
3914     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3915     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3916 }
3917
3918 case "$toolchain" in
3919     *-asan)
3920         cc_default="${toolchain%-asan}"
3921         add_cflags  -fsanitize=address
3922         add_ldflags -fsanitize=address
3923     ;;
3924     *-msan)
3925         cc_default="${toolchain%-msan}"
3926         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3927         add_ldflags -fsanitize=memory
3928     ;;
3929     *-tsan)
3930         cc_default="${toolchain%-tsan}"
3931         add_cflags  -fsanitize=thread -fPIE
3932         add_ldflags -fsanitize=thread -pie
3933         case "$toolchain" in
3934             gcc-tsan)
3935                 add_cflags  -fPIC
3936                 add_ldflags -fPIC
3937                 ;;
3938         esac
3939     ;;
3940     *-usan)
3941         cc_default="${toolchain%-usan}"
3942         add_cflags  -fsanitize=undefined
3943         add_ldflags -fsanitize=undefined
3944     ;;
3945     valgrind-*)
3946         target_exec_default="valgrind"
3947         case "$toolchain" in
3948             valgrind-massif)
3949                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3950                 ;;
3951             valgrind-memcheck)
3952                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3953                 ;;
3954         esac
3955     ;;
3956     msvc)
3957         # Check whether the current MSVC version needs the C99 converter.
3958         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3959         # support enough of C99 to build ffmpeg. Default to the new
3960         # behaviour if the regexp was unable to match anything, since this
3961         # successfully parses the version number of existing supported
3962         # versions that require the converter (MSVC 2010 and 2012).
3963         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3964         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3965             cc_default="cl"
3966             cxx_default="cl"
3967         else
3968             cc_default="c99wrap cl"
3969             cxx_default="c99wrap cl"
3970         fi
3971         ld_default="$source_path/compat/windows/mslink"
3972         nm_default="dumpbin -symbols"
3973         ar_default="lib"
3974         case "$arch" in
3975         aarch64|arm64)
3976             as_default="armasm64"
3977             ;;
3978         arm*)
3979             as_default="armasm"
3980             ;;
3981         esac
3982         target_os_default="win32"
3983         # Use a relative path for TMPDIR. This makes sure all the
3984         # ffconf temp files are written with a relative path, avoiding
3985         # issues with msys/win32 path conversion for MSVC parameters
3986         # such as -Fo<file> or -out:<file>.
3987         TMPDIR=.
3988     ;;
3989     icl)
3990         cc_default="icl"
3991         ld_default="xilink"
3992         nm_default="dumpbin -symbols"
3993         ar_default="xilib"
3994         target_os_default="win32"
3995         TMPDIR=.
3996     ;;
3997     gcov)
3998         add_cflags  -fprofile-arcs -ftest-coverage
3999         add_ldflags -fprofile-arcs -ftest-coverage
4000     ;;
4001     llvm-cov)
4002         add_cflags -fprofile-arcs -ftest-coverage
4003         add_ldflags --coverage
4004     ;;
4005     hardened)
4006         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4007         add_cflags   -fno-strict-overflow -fstack-protector-all
4008         add_ldflags  -Wl,-z,relro -Wl,-z,now
4009         add_cflags   -fPIE
4010         add_ldexeflags -fPIE -pie
4011     ;;
4012     ?*)
4013         die "Unknown toolchain $toolchain"
4014     ;;
4015 esac
4016
4017 if test -n "$cross_prefix"; then
4018     test -n "$arch" && test -n "$target_os" ||
4019         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4020     enable cross_compile
4021 fi
4022
4023 ar_default="${cross_prefix}${ar_default}"
4024 cc_default="${cross_prefix}${cc_default}"
4025 cxx_default="${cross_prefix}${cxx_default}"
4026 nm_default="${cross_prefix}${nm_default}"
4027 pkg_config_default="${cross_prefix}${pkg_config_default}"
4028 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4029     ranlib_default="${cross_prefix}${ranlib_default} -D"
4030 else
4031     ranlib_default="${cross_prefix}${ranlib_default}"
4032 fi
4033 strip_default="${cross_prefix}${strip_default}"
4034 windres_default="${cross_prefix}${windres_default}"
4035
4036 sysinclude_default="${sysroot}/usr/include"
4037
4038 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4039     target_exec target_os x86asmexe nvcc
4040 enabled cross_compile || host_cc_default=$cc
4041 set_default host_cc
4042
4043 pkg_config_fail_message=""
4044 if ! $pkg_config --version >/dev/null 2>&1; then
4045     warn "$pkg_config not found, library detection may fail."
4046     pkg_config=false
4047 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4048     pkg_config_fail_message="
4049 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4050 fi
4051
4052 if test $doxygen != $doxygen_default && \
4053   ! $doxygen --version >/dev/null 2>&1; then
4054     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4055 fi
4056
4057 exesuf() {
4058     case $1 in
4059         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4060     esac
4061 }
4062
4063 EXESUF=$(exesuf $target_os)
4064 HOSTEXESUF=$(exesuf $host_os)
4065
4066 # set temporary file name
4067 : ${TMPDIR:=$TEMPDIR}
4068 : ${TMPDIR:=$TMP}
4069 : ${TMPDIR:=/tmp}
4070
4071 if [ -n "$tempprefix" ] ; then
4072     mktemp(){
4073         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4074         echo "$tmpname"
4075         mkdir "$tmpname"
4076     }
4077 elif ! test_cmd mktemp -u XXXXXX; then
4078     # simple replacement for missing mktemp
4079     # NOT SAFE FOR GENERAL USE
4080     mktemp(){
4081         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4082         echo "$tmpname"
4083         mkdir "$tmpname"
4084     }
4085 fi
4086
4087 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4088     die "Unable to create temporary directory in $TMPDIR."
4089
4090 tmpfile(){
4091     tmp="${FFTMPDIR}/test"$2
4092     (set -C; exec > $tmp) 2> /dev/null ||
4093         die "Unable to create temporary file in $FFTMPDIR."
4094     eval $1=$tmp
4095 }
4096
4097 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4098 trap 'exit 2' INT
4099
4100 tmpfile TMPASM .asm
4101 tmpfile TMPC   .c
4102 tmpfile TMPCPP .cpp
4103 tmpfile TMPE   $EXESUF
4104 tmpfile TMPH   .h
4105 tmpfile TMPM   .m
4106 tmpfile TMPO   .o
4107 tmpfile TMPS   .S
4108 tmpfile TMPSH  .sh
4109 tmpfile TMPV   .ver
4110
4111 unset -f mktemp
4112
4113 chmod +x $TMPE
4114
4115 # make sure we can execute files in $TMPDIR
4116 cat > $TMPSH 2>> $logfile <<EOF
4117 #! /bin/sh
4118 EOF
4119 chmod +x $TMPSH >> $logfile 2>&1
4120 if ! $TMPSH >> $logfile 2>&1; then
4121     cat <<EOF
4122 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4123 variable to another directory and make sure that it is not mounted noexec.
4124 EOF
4125     die "Sanity test failed."
4126 fi
4127
4128 armasm_flags(){
4129     for flag; do
4130         case $flag in
4131             # Filter out MSVC cl.exe options from cflags that shouldn't
4132             # be passed to gas-preprocessor
4133             -M[TD]*)                                            ;;
4134             *)                  echo $flag                      ;;
4135         esac
4136    done
4137 }
4138
4139 cparser_flags(){
4140     for flag; do
4141         case $flag in
4142             -Wno-switch)             echo -Wno-switch-enum ;;
4143             -Wno-format-zero-length) ;;
4144             -Wdisabled-optimization) ;;
4145             -Wno-pointer-sign)       echo -Wno-other ;;
4146             *)                       echo $flag ;;
4147         esac
4148     done
4149 }
4150
4151 msvc_common_flags(){
4152     for flag; do
4153         case $flag in
4154             # In addition to specifying certain flags under the compiler
4155             # specific filters, they must be specified here as well or else the
4156             # generic catch all at the bottom will print the original flag.
4157             -Wall)                ;;
4158             -Wextra)              ;;
4159             -std=c99)             ;;
4160             # Common flags
4161             -fomit-frame-pointer) ;;
4162             -g)                   echo -Z7 ;;
4163             -fno-math-errno)      ;;
4164             -fno-common)          ;;
4165             -fno-signed-zeros)    ;;
4166             -fPIC)                ;;
4167             -mthumb)              ;;
4168             -march=*)             ;;
4169             -lz)                  echo zlib.lib ;;
4170             -lx264)               echo libx264.lib ;;
4171             -lstdc++)             ;;
4172             -l*)                  echo ${flag#-l}.lib ;;
4173             -LARGEADDRESSAWARE)   echo $flag ;;
4174             -L*)                  echo -libpath:${flag#-L} ;;
4175             *)                    echo $flag ;;
4176         esac
4177     done
4178 }
4179
4180 msvc_flags(){
4181     msvc_common_flags "$@"
4182     for flag; do
4183         case $flag in
4184             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4185                                        -wd4554 ;;
4186             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4187                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4188                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4189                                        -wd4307 \
4190                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4191         esac
4192     done
4193 }
4194
4195 icl_flags(){
4196     msvc_common_flags "$@"
4197     for flag; do
4198         case $flag in
4199             # Despite what Intel's documentation says -Wall, which is supported
4200             # on Windows, does enable remarks so disable them here.
4201             -Wall)                echo $flag -Qdiag-disable:remark ;;
4202             -std=c99)             echo -Qstd=c99 ;;
4203             -flto)                echo -ipo ;;
4204         esac
4205     done
4206 }
4207
4208 icc_flags(){
4209     for flag; do
4210         case $flag in
4211             -flto)                echo -ipo ;;
4212             *)                    echo $flag ;;
4213         esac
4214     done
4215 }
4216
4217 suncc_flags(){
4218     for flag; do
4219         case $flag in
4220             -march=*|-mcpu=*)
4221                 case "${flag#*=}" in
4222                     native)                   echo -xtarget=native       ;;
4223                     v9|niagara)               echo -xarch=sparc          ;;
4224                     ultrasparc)               echo -xarch=sparcvis       ;;
4225                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4226                     i586|pentium)             echo -xchip=pentium        ;;
4227                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4228                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4229                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4230                     pentium4*)          echo -xtarget=pentium4           ;;
4231                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4232                     *-sse3)             echo -xarch=sse3                 ;;
4233                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4234                     bonnell)                   echo -xarch=ssse3         ;;
4235                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4236                     westmere)                  echo -xtarget=westmere    ;;
4237                     silvermont)                echo -xarch=sse4_2        ;;
4238                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4239                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4240                                                echo -xarch=avx           ;;
4241                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4242                     btver1)                    echo -xarch=amdsse4a      ;;
4243                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4244                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4245                     k8|opteron|athlon64|athlon-fx)
4246                                                echo -xarch=sse2a         ;;
4247                     athlon*)                   echo -xarch=pentium_proa  ;;
4248                 esac
4249                 ;;
4250             -std=c99)             echo -xc99              ;;
4251             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4252             -fPIC)                echo -KPIC -xcode=pic32 ;;
4253             -W*,*)                echo $flag              ;;
4254             -f*-*|-W*|-mimpure-text)                      ;;
4255             -shared)              echo -G                 ;;
4256             *)                    echo $flag              ;;
4257         esac
4258     done
4259 }
4260
4261 probe_cc(){
4262     pfx=$1
4263     _cc=$2
4264     first=$3
4265
4266     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4267     unset _ld_o _ldflags _ld_lib _ld_path
4268     unset _depflags _DEPCMD _DEPFLAGS
4269     _flags_filter=echo
4270
4271     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4272         true # no-op to avoid reading stdin in following checks
4273     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4274         _type=llvm_gcc
4275         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4276         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4277         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4278         _cflags_speed='-O3'
4279         _cflags_size='-Os'
4280     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4281         _type=gcc
4282         gcc_version=$($_cc --version | head -n1)
4283         gcc_basever=$($_cc -dumpversion)
4284         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4285         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4286         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4287         case $gcc_basever in
4288             2) ;;
4289             2.*) ;;
4290             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4291         esac
4292         if [ "$first" = true ]; then
4293             case $gcc_basever in
4294                 4.2*)
4295                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4296             esac
4297         fi
4298         _cflags_speed='-O3'
4299         _cflags_size='-Os'
4300     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4301         _type=icc
4302         _ident=$($_cc --version | head -n1)
4303         _depflags='-MMD'
4304         _cflags_speed='-O3'
4305         _cflags_size='-Os'
4306         _cflags_noopt='-O1'
4307         _flags_filter=icc_flags
4308     elif $_cc -v 2>&1 | grep -q xlc; then
4309         _type=xlc
4310         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4311         _cflags_speed='-O5'
4312         _cflags_size='-O5 -qcompact'
4313     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4314         test -d "$sysroot" || die "No valid sysroot specified."
4315         _type=armcc
4316         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4317         armcc_conf="$PWD/armcc.conf"
4318         $_cc --arm_linux_configure                 \
4319              --arm_linux_config_file="$armcc_conf" \
4320              --configure_sysroot="$sysroot"        \
4321              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4322              die "Error creating armcc configuration file."
4323         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4324         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4325         as_default="${cross_prefix}gcc"
4326         _depflags='-MMD'
4327         _cflags_speed='-O3'
4328         _cflags_size='-Os'
4329     elif $_cc -v 2>&1 | grep -q clang; then
4330         _type=clang
4331         _ident=$($_cc --version 2>/dev/null | head -n1)
4332         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4333         _cflags_speed='-O3'
4334         _cflags_size='-Oz'
4335     elif $_cc -V 2>&1 | grep -q Sun; then
4336         _type=suncc
4337         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4338         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4339         _DEPFLAGS='-xM1 -xc99'
4340         _ldflags='-std=c99'
4341         _cflags_speed='-O5'
4342         _cflags_size='-O5 -xspace'
4343         _flags_filter=suncc_flags
4344     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4345         _type=pathscale
4346         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4347         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4348         _cflags_speed='-O2'
4349         _cflags_size='-Os'
4350         _flags_filter='filter_out -Wdisabled-optimization'
4351     elif $_cc -v 2>&1 | grep -q Open64; then
4352         _type=open64
4353         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4354         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4355         _cflags_speed='-O2'
4356         _cflags_size='-Os'
4357         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4358     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4359         _type=armasm
4360         _ident=$($_cc | head -n1)
4361         # 4509: "This form of conditional instruction is deprecated"
4362         _flags="-nologo -ignore 4509"
4363         _flags_filter=armasm_flags
4364     elif $_cc 2>&1 | grep -q Intel; then
4365         _type=icl
4366         _ident=$($_cc 2>&1 | head -n1)
4367         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4368         # Not only is O3 broken on 13.x+ but it is slower on all previous
4369         # versions (tested) as well.
4370         _cflags_speed="-O2"
4371         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4372         if $_cc 2>&1 | grep -q Linker; then
4373             _ld_o='-out:$@'
4374         else
4375             _ld_o='-Fe$@'
4376         fi
4377         _cc_o='-Fo$@'
4378         _cc_e='-P'
4379         _flags_filter=icl_flags
4380         _ld_lib='lib%.a'
4381         _ld_path='-libpath:'
4382         # -Qdiag-error to make icl error when seeing certain unknown arguments
4383         _flags='-nologo -Qdiag-error:4044,10157'
4384         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4385         # with MSVC which enables it by default.
4386         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4387         disable stripping
4388     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4389         # lld can emulate multiple different linkers; in ms link.exe mode,
4390         # the -? parameter gives the help output which contains an identifyable
4391         # string, while it gives an error in other modes.
4392         _type=lld-link
4393         # The link.exe mode doesn't have a switch for getting the version,
4394         # but we can force it back to gnu mode and get the version from there.
4395         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4396         _ld_o='-out:$@'
4397         _flags_filter=msvc_flags
4398         _ld_lib='lib%.a'
4399         _ld_path='-libpath:'
4400     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4401         _type=msvc
4402         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4403         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4404         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4405         _cflags_speed="-O2"
4406         _cflags_size="-O1"
4407         _cflags_noopt="-O1"
4408         if $_cc -nologo- 2>&1 | grep -q Linker; then
4409             _ld_o='-out:$@'
4410         else
4411             _ld_o='-Fe$@'
4412         fi
4413         _cc_o='-Fo$@'
4414         _cc_e='-P -Fi$@'
4415         _flags_filter=msvc_flags
4416         _ld_lib='lib%.a'
4417         _ld_path='-libpath:'
4418         _flags='-nologo'
4419         disable stripping
4420     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4421         _type=cparser
4422         _ident=$($_cc --version | head -n1)
4423         _depflags='-MMD'
4424         _cflags_speed='-O4'
4425         _cflags_size='-O2'
4426         _flags_filter=cparser_flags
4427     fi
4428
4429     eval ${pfx}_type=\$_type
4430     eval ${pfx}_ident=\$_ident
4431 }
4432
4433 set_ccvars(){
4434     eval ${1}_C=\${_cc_c-\${${1}_C}}
4435     eval ${1}_E=\${_cc_e-\${${1}_E}}
4436     eval ${1}_O=\${_cc_o-\${${1}_O}}
4437
4438     if [ -n "$_depflags" ]; then
4439         eval ${1}_DEPFLAGS=\$_depflags
4440     else
4441         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4442         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4443         eval DEP${1}FLAGS=\$_flags
4444     fi
4445 }
4446
4447 probe_cc cc "$cc" "true"
4448 cflags_filter=$_flags_filter
4449 cflags_speed=$_cflags_speed
4450 cflags_size=$_cflags_size
4451 cflags_noopt=$_cflags_noopt
4452 add_cflags $_flags $_cflags
4453 cc_ldflags=$_ldflags
4454 set_ccvars CC
4455 set_ccvars CXX
4456
4457 probe_cc hostcc "$host_cc"
4458 host_cflags_filter=$_flags_filter
4459 host_cflags_speed=$_cflags_speed
4460 add_host_cflags  $_flags $_cflags
4461 set_ccvars HOSTCC
4462
4463 test -n "$cc_type" && enable $cc_type ||
4464     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4465
4466 : ${as_default:=$cc}
4467 : ${objcc_default:=$cc}
4468 : ${dep_cc_default:=$cc}
4469 : ${ld_default:=$cc}
4470 : ${host_ld_default:=$host_cc}
4471 set_default ar as objcc dep_cc ld ln_s host_ld windres
4472
4473 probe_cc as "$as"
4474 asflags_filter=$_flags_filter
4475 add_asflags $_flags $_cflags
4476 set_ccvars AS
4477
4478 probe_cc objcc "$objcc"
4479 objcflags_filter=$_flags_filter
4480 add_objcflags $_flags $_cflags
4481 set_ccvars OBJC
4482
4483 probe_cc ld "$ld"
4484 ldflags_filter=$_flags_filter
4485 add_ldflags $_flags $_ldflags
4486 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4487 LD_O=${_ld_o-$LD_O}
4488 LD_LIB=${_ld_lib-$LD_LIB}
4489 LD_PATH=${_ld_path-$LD_PATH}
4490
4491 probe_cc hostld "$host_ld"
4492 host_ldflags_filter=$_flags_filter
4493 add_host_ldflags $_flags $_ldflags
4494 HOSTLD_O=${_ld_o-$HOSTLD_O}
4495
4496 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4497     probe_cc depcc "$dep_cc"
4498     CCDEP=${_DEPCMD:-$DEPCMD}
4499     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4500     DEPCCFLAGS=$_flags
4501 fi
4502
4503 if $ar 2>&1 | grep -q Microsoft; then
4504     arflags="-nologo"
4505     ar_o='-out:$@'
4506 elif $ar 2>&1 | grep -q "\[D\] "; then
4507     arflags="rcD"
4508     ar_o='$@'
4509 else
4510     arflags="rc"
4511     ar_o='$@'
4512 fi
4513
4514 add_cflags $extra_cflags
4515 add_cxxflags $extra_cxxflags
4516 add_objcflags $extra_objcflags
4517 add_asflags $extra_cflags
4518
4519 if test -n "$sysroot"; then
4520     case "$cc_type" in
4521         gcc|llvm_gcc|clang)
4522             add_cppflags --sysroot="$sysroot"
4523             add_ldflags --sysroot="$sysroot"
4524         ;;
4525     esac
4526 fi
4527
4528 if test "$cpu" = host; then
4529     enabled cross_compile &&
4530         die "--cpu=host makes no sense when cross-compiling."
4531
4532     case "$cc_type" in
4533         gcc|llvm_gcc)
4534             check_native(){
4535                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4536                 sed -n "/cc1.*$1=/{
4537                             s/.*$1=\\([^ ]*\\).*/\\1/
4538                             p
4539                             q
4540                         }" $TMPE
4541             }
4542             cpu=$(check_native -march || check_native -mcpu)
4543         ;;
4544         clang)
4545             check_native(){
4546                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4547                 sed -n "/cc1.*-target-cpu /{
4548                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4549                             p
4550                             q
4551                         }" $TMPE
4552             }
4553             cpu=$(check_native -march)
4554         ;;
4555     esac
4556
4557     test "${cpu:-host}" = host &&
4558         die "--cpu=host not supported with compiler $cc"
4559 fi
4560
4561 # Deal with common $arch aliases
4562 case "$arch" in
4563     aarch64|arm64)
4564         arch="aarch64"
4565     ;;
4566     arm*|iPad*|iPhone*)
4567         arch="arm"
4568     ;;
4569     mips*|IP*)
4570         case "$arch" in
4571         *el)
4572             add_cppflags -EL
4573             add_ldflags -EL
4574         ;;
4575         *eb)
4576             add_cppflags -EB
4577             add_ldflags -EB
4578         ;;
4579         esac
4580         arch="mips"
4581     ;;
4582     parisc*|hppa*)
4583         arch="parisc"
4584     ;;
4585     "Power Macintosh"|ppc*|powerpc*)
4586         arch="ppc"
4587     ;;
4588     s390|s390x)
4589         arch="s390"
4590     ;;
4591     sh4|sh)
4592         arch="sh4"
4593     ;;
4594     sun4*|sparc*)
4595         arch="sparc"
4596     ;;
4597     tilegx|tile-gx)
4598         arch="tilegx"
4599     ;;
4600     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4601         arch="x86"
4602     ;;
4603 esac
4604
4605 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4606 enable $arch
4607
4608 # Add processor-specific flags
4609 if enabled aarch64; then
4610
4611     case $cpu in
4612         armv*)
4613             cpuflags="-march=$cpu"
4614         ;;
4615         *)
4616             cpuflags="-mcpu=$cpu"
4617         ;;
4618     esac
4619
4620 elif enabled alpha; then
4621
4622     cpuflags="-mcpu=$cpu"
4623
4624 elif enabled arm; then
4625
4626     check_arm_arch() {
4627         test_cpp_condition stddef.h \
4628             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4629             $cpuflags
4630     }
4631
4632     probe_arm_arch() {
4633         if   check_arm_arch 4;        then echo armv4
4634         elif check_arm_arch 4T;       then echo armv4t
4635         elif check_arm_arch 5;        then echo armv5
4636         elif check_arm_arch 5E;       then echo armv5e
4637         elif check_arm_arch 5T;       then echo armv5t
4638         elif check_arm_arch 5TE;      then echo armv5te
4639         elif check_arm_arch 5TEJ;     then echo armv5te
4640         elif check_arm_arch 6;        then echo armv6
4641         elif check_arm_arch 6J;       then echo armv6j
4642         elif check_arm_arch 6K;       then echo armv6k
4643         elif check_arm_arch 6Z;       then echo armv6z
4644         elif check_arm_arch 6KZ;      then echo armv6zk
4645         elif check_arm_arch 6ZK;      then echo armv6zk
4646         elif check_arm_arch 6T2;      then echo armv6t2
4647         elif check_arm_arch 7;        then echo armv7
4648         elif check_arm_arch 7A  7_A;  then echo armv7-a
4649         elif check_arm_arch 7S;       then echo armv7-a
4650         elif check_arm_arch 7R  7_R;  then echo armv7-r
4651         elif check_arm_arch 7M  7_M;  then echo armv7-m
4652         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4653         elif check_arm_arch 8A  8_A;  then echo armv8-a
4654         fi
4655     }
4656
4657     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4658
4659     case $cpu in
4660         armv*)
4661             cpuflags="-march=$cpu"
4662             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4663         ;;
4664         *)
4665             cpuflags="-mcpu=$cpu"
4666             case $cpu in
4667                 cortex-a*)                               subarch=armv7a  ;;
4668                 cortex-r*)                               subarch=armv7r  ;;
4669                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4670                 arm11*)                                  subarch=armv6   ;;
4671                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4672                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4673                 *)                             subarch=$(probe_arm_arch) ;;
4674             esac
4675         ;;
4676     esac
4677
4678     case "$subarch" in
4679         armv5t*)    enable fast_clz                ;;
4680         armv[6-8]*)
4681             enable fast_clz
4682             disabled fast_unaligned || enable fast_unaligned
4683             ;;
4684     esac
4685
4686 elif enabled avr32; then
4687
4688     case $cpu in
4689         ap7[02]0[0-2])
4690             subarch="avr32_ap"
4691             cpuflags="-mpart=$cpu"
4692         ;;
4693         ap)
4694             subarch="avr32_ap"
4695             cpuflags="-march=$cpu"
4696         ;;
4697         uc3[ab]*)
4698             subarch="avr32_uc"
4699             cpuflags="-mcpu=$cpu"
4700         ;;
4701         uc)
4702             subarch="avr32_uc"
4703             cpuflags="-march=$cpu"
4704         ;;
4705     esac
4706
4707 elif enabled bfin; then
4708
4709     cpuflags="-mcpu=$cpu"
4710
4711 elif enabled mips; then
4712
4713     cpuflags="-march=$cpu"
4714
4715     if [ "$cpu" != "generic" ]; then
4716         disable mips32r2
4717         disable mips32r5
4718         disable mips64r2
4719         disable mips32r6
4720         disable mips64r6
4721         disable loongson2
4722         disable loongson3
4723
4724         case $cpu in
4725             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4726                 enable mips32r2
4727                 disable msa
4728             ;;
4729             p5600|i6400|p6600)
4730                 disable mipsdsp
4731                 disable mipsdspr2
4732             ;;
4733             loongson*)
4734                 enable loongson2
4735                 enable loongson3
4736                 enable local_aligned
4737                 enable simd_align_16
4738                 enable fast_64bit
4739                 enable fast_clz
4740                 enable fast_cmov
4741                 enable fast_unaligned
4742                 disable aligned_stack
4743                 disable mipsfpu
4744                 disable mipsdsp
4745                 disable mipsdspr2
4746                 case $cpu in
4747                     loongson3*)
4748                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4749                     ;;
4750                     loongson2e)
4751                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4752                     ;;
4753                     loongson2f)
4754                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4755                     ;;
4756                 esac
4757             ;;
4758             *)
4759                 # Unknown CPU. Disable everything.
4760                 warn "unknown CPU. Disabling all MIPS optimizations."
4761                 disable mipsfpu
4762                 disable mipsdsp
4763                 disable mipsdspr2
4764                 disable msa
4765                 disable mmi
4766             ;;
4767         esac
4768
4769         case $cpu in
4770             24kc)
4771                 disable mipsfpu
4772                 disable mipsdsp
4773                 disable mipsdspr2
4774             ;;
4775             24kf*)
4776                 disable mipsdsp
4777                 disable mipsdspr2
4778             ;;
4779             24kec|34kc|1004kc)
4780                 disable mipsfpu
4781                 disable mipsdspr2
4782             ;;
4783             24kef*|34kf*|1004kf*)
4784                 disable mipsdspr2
4785             ;;
4786             74kc)
4787                 disable mipsfpu
4788             ;;
4789             p5600)
4790                 enable mips32r5
4791                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4792             ;;
4793             i6400)
4794                 enable mips64r6
4795                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4796             ;;
4797             p6600)
4798                 enable mips64r6
4799                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4800             ;;
4801         esac
4802     else
4803         # We do not disable anything. Is up to the user to disable the unwanted features.
4804         warn 'generic cpu selected'
4805     fi
4806
4807 elif enabled ppc; then
4808
4809     disable ldbrx
4810
4811     case $(tolower $cpu) in
4812         601|ppc601|powerpc601)
4813             cpuflags="-mcpu=601"
4814             disable altivec
4815         ;;
4816         603*|ppc603*|powerpc603*)
4817             cpuflags="-mcpu=603"
4818             disable altivec
4819         ;;
4820         604*|ppc604*|powerpc604*)
4821             cpuflags="-mcpu=604"
4822             disable altivec
4823         ;;
4824         g3|75*|ppc75*|powerpc75*)
4825             cpuflags="-mcpu=750"
4826             disable altivec
4827         ;;
4828         g4|745*|ppc745*|powerpc745*)
4829             cpuflags="-mcpu=7450"
4830             disable vsx
4831         ;;
4832         74*|ppc74*|powerpc74*)
4833             cpuflags="-mcpu=7400"
4834             disable vsx
4835         ;;
4836         g5|970|ppc970|powerpc970)
4837             cpuflags="-mcpu=970"
4838             disable vsx
4839         ;;
4840         power[3-6]*)
4841             cpuflags="-mcpu=$cpu"
4842             disable vsx
4843         ;;
4844         power[7-8]*)
4845             cpuflags="-mcpu=$cpu"
4846         ;;
4847         cell)
4848             cpuflags="-mcpu=cell"
4849             enable ldbrx
4850             disable vsx
4851         ;;
4852         e500mc)
4853             cpuflags="-mcpu=e500mc"
4854             disable altivec
4855         ;;
4856         e500v2)
4857             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4858             disable altivec
4859             disable dcbzl
4860         ;;
4861         e500)
4862             cpuflags="-mcpu=8540 -mhard-float"
4863             disable altivec
4864             disable dcbzl
4865         ;;
4866     esac
4867
4868 elif enabled sparc; then
4869
4870     case $cpu in
4871         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4872             cpuflags="-mcpu=$cpu"
4873         ;;
4874         ultrasparc*|niagara[234])
4875             cpuflags="-mcpu=$cpu"
4876         ;;
4877     esac
4878
4879 elif enabled x86; then
4880
4881     case $cpu in
4882         i[345]86|pentium)
4883             cpuflags="-march=$cpu"
4884             disable i686
4885             disable mmx
4886         ;;
4887         # targets that do NOT support nopl and conditional mov (cmov)
4888         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4889             cpuflags="-march=$cpu"
4890             disable i686
4891         ;;
4892         # targets that do support nopl and conditional mov (cmov)
4893         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4894         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4895         |amdfam10|barcelona|b[dt]ver*|znver*)
4896             cpuflags="-march=$cpu"
4897             enable i686
4898             enable fast_cmov
4899         ;;
4900         # targets that do support conditional mov but on which it's slow
4901         pentium4|pentium4m|prescott|nocona)
4902             cpuflags="-march=$cpu"
4903             enable i686
4904             disable fast_cmov
4905         ;;
4906     esac
4907
4908 fi
4909
4910 if [ "$cpu" != generic ]; then
4911     add_cflags  $cpuflags
4912     add_asflags $cpuflags
4913     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4914 fi
4915
4916 # compiler sanity check
4917 test_exec <<EOF
4918 int main(void){ return 0; }
4919 EOF
4920 if test "$?" != 0; then
4921     echo "$cc is unable to create an executable file."
4922     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4923         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4924         echo "Only do this if you know what cross compiling means."
4925     fi
4926     die "C compiler test failed."
4927 fi
4928
4929 add_cppflags -D_ISOC99_SOURCE
4930 add_cxxflags -D__STDC_CONSTANT_MACROS
4931 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4932
4933 # some compilers silently accept -std=c11, so we also need to check that the
4934 # version macro is defined properly
4935 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4936     add_cflags -std=c11 ||
4937     check_cflags -std=c99
4938
4939 check_cppflags -D_FILE_OFFSET_BITS=64
4940 check_cppflags -D_LARGEFILE_SOURCE
4941
4942 add_host_cppflags -D_ISOC99_SOURCE
4943 check_host_cflags -std=c99
4944 check_host_cflags -Wall
4945 check_host_cflags $host_cflags_speed
4946
4947 check_64bit(){
4948     arch32=$1
4949     arch64=$2
4950     expr=${3:-'sizeof(void *) > 4'}
4951     test_code cc "" "int test[2*($expr) - 1]" &&
4952         subarch=$arch64 || subarch=$arch32
4953     enable $subarch
4954 }
4955
4956 case "$arch" in
4957     aarch64|alpha|ia64)
4958         enabled shared && enable_weak pic
4959     ;;
4960     mips)
4961         check_64bit mips mips64 '_MIPS_SIM > 1'
4962         enabled shared && enable_weak pic
4963     ;;
4964     parisc)
4965         check_64bit parisc parisc64
4966         enabled shared && enable_weak pic
4967     ;;
4968     ppc)
4969         check_64bit ppc ppc64
4970         enabled shared && enable_weak pic
4971     ;;
4972     s390)
4973         check_64bit s390 s390x
4974         enabled shared && enable_weak pic
4975     ;;
4976     sparc)
4977         check_64bit sparc sparc64
4978         enabled shared && enable_weak pic
4979     ;;
4980     x86)
4981         check_64bit x86_32 x86_64
4982         # Treat x32 as x64 for now. Note it also needs pic if shared
4983         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
4984             subarch=x86_64 && enable x86_64 && disable x86_32
4985         if enabled x86_64; then
4986             enabled shared && enable_weak pic
4987             objformat=elf64
4988         fi
4989     ;;
4990 esac
4991
4992 # OS specific
4993 case $target_os in
4994     aix)
4995         SHFLAGS=-shared
4996         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4997         enabled shared && add_ldflags -Wl,-brtl
4998         arflags='-Xany -r -c'
4999         ;;
5000     android)
5001         disable symver
5002         enable section_data_rel_ro
5003         SLIB_INSTALL_NAME='$(SLIBNAME)'
5004         SLIB_INSTALL_LINKS=
5005         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5006         ;;
5007     haiku)
5008         prefix_default="/boot/common"
5009         network_extralibs="-lnetwork"
5010         host_extralibs=
5011         ;;
5012     sunos)
5013         SHFLAGS='-shared -Wl,-h,$$(@F)'
5014         enabled x86 && append SHFLAGS -mimpure-text
5015         network_extralibs="-lsocket -lnsl"
5016         add_cppflags -D__EXTENSIONS__
5017         # When using suncc to build, the Solaris linker will mark
5018         # an executable with each instruction set encountered by
5019         # the Solaris assembler.  As our libraries contain their own
5020         # guards for processor-specific code, instead suppress
5021         # generation of the HWCAPS ELF section on Solaris x86 only.
5022         enabled_all suncc x86 &&
5023             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5024             add_ldflags -Wl,-M,mapfile
5025         nm_default='nm -P -g'
5026         version_script='-M'
5027         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5028         ;;
5029     netbsd)
5030         disable symver
5031         oss_indev_extralibs="-lossaudio"
5032         oss_outdev_extralibs="-lossaudio"
5033         enabled gcc || check_ldflags -Wl,-zmuldefs
5034         ;;
5035     openbsd|bitrig)
5036         disable symver
5037         SHFLAGS='-shared'
5038         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5039         SLIB_INSTALL_LINKS=
5040         oss_indev_extralibs="-lossaudio"
5041         oss_outdev_extralibs="-lossaudio"
5042         ;;
5043     dragonfly)
5044         disable symver
5045         ;;
5046     freebsd)
5047         ;;
5048     bsd/os)
5049         add_extralibs -lpoll -lgnugetopt
5050         strip="strip -d"
5051         ;;
5052     darwin)
5053         enabled ppc && add_asflags -force_cpusubtype_ALL
5054         install_name_dir_default='$(SHLIBDIR)'
5055         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5056         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5057         strip="${strip} -x"
5058         add_ldflags -Wl,-dynamic,-search_paths_first
5059         check_cflags -Werror=partial-availability
5060         SLIBSUF=".dylib"
5061         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5062         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5063         enabled x86_64 && objformat="macho64" || objformat="macho32"
5064         enabled_any pic shared x86_64 ||
5065             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5066         check_header dispatch/dispatch.h &&
5067             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5068         if test -n "$sysroot"; then
5069             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5070             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5071         fi
5072         version_script='-exported_symbols_list'
5073         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5074         ;;
5075     msys*)
5076         die "Native MSYS builds are discouraged, please use the MINGW environment."
5077         ;;
5078     mingw32*|mingw64*)
5079         target_os=mingw32
5080         LIBTARGET=i386
5081         if enabled x86_64; then
5082             LIBTARGET="i386:x86-64"
5083         elif enabled arm; then
5084             LIBTARGET="arm"
5085         elif enabled aarch64; then
5086             LIBTARGET="arm64"
5087         fi
5088         if enabled shared; then
5089             # Cannot build both shared and static libs when using dllimport.
5090             disable static
5091         fi
5092         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5093         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5094         shlibdir_default="$bindir_default"
5095         SLIBPREF=""
5096         SLIBSUF=".dll"
5097         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5098         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5099         if test_cmd lib.exe -list; then
5100             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5101             if enabled x86_64; then
5102                 LIBTARGET=x64
5103             fi
5104         else
5105             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5106         fi
5107         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5108         SLIB_INSTALL_LINKS=
5109         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5110         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5111         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5112         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5113         enabled x86_64 && objformat="win64" || objformat="win32"
5114         dlltool="${cross_prefix}dlltool"
5115         ranlib=:
5116         enable dos_paths
5117         check_ldflags -Wl,--nxcompat,--dynamicbase
5118         # Lets work around some stupidity in binutils.
5119         # ld will strip relocations from executables even though we need them
5120         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5121         # however ld then forgets what the entry point should be (oops) so we
5122         # have to manually (re)set it.
5123         if enabled x86_32; then
5124             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5125         elif enabled x86_64; then
5126             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5127             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5128             # Set image base >4GB for extra entropy with HEASLR
5129             add_ldexeflags -Wl,--image-base,0x140000000
5130             append SHFLAGS -Wl,--image-base,0x180000000
5131         fi
5132         ;;
5133     win32|win64)
5134         disable symver
5135         if enabled shared; then
5136             # Link to the import library instead of the normal static library
5137             # for shared libs.
5138             LD_LIB='%.lib'
5139             # Cannot build both shared and static libs with MSVC or icl.
5140             disable static
5141         fi
5142         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5143         shlibdir_default="$bindir_default"
5144         SLIBPREF=""
5145         SLIBSUF=".dll"
5146         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5147         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5148         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5149         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5150         SLIB_INSTALL_LINKS=
5151         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5152         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5153         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5154         enabled x86_64 && objformat="win64" || objformat="win32"
5155         ranlib=:
5156         enable dos_paths
5157         ;;
5158     cygwin*)
5159         target_os=cygwin
5160         shlibdir_default="$bindir_default"
5161         SLIBPREF="cyg"
5162         SLIBSUF=".dll"
5163         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5164         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5165         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5166         SLIB_INSTALL_LINKS=
5167         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5168         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5169         enabled x86_64 && objformat="win64" || objformat="win32"
5170         enable dos_paths
5171         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5172         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5173         ;;
5174     *-dos|freedos|opendos)
5175         network_extralibs="-lsocket"
5176         objformat="coff"
5177         enable dos_paths
5178         add_cppflags -U__STRICT_ANSI__
5179         ;;
5180     linux)
5181         enable section_data_rel_ro
5182         enabled_any arm aarch64 && enable_weak linux_perf
5183         ;;
5184     irix*)
5185         target_os=irix
5186         ranlib="echo ignoring ranlib"
5187         ;;
5188     os/2*)
5189         strip="lxlite -CS"
5190         striptype=""
5191         objformat="aout"
5192         add_cppflags -D_GNU_SOURCE
5193         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5194         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5195         LIBSUF="_s.a"
5196         SLIBPREF=""
5197         SLIBSUF=".dll"
5198         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5199         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5200         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5201             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5202             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5203             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5204             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5205         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5206             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5207         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5208         SLIB_INSTALL_LINKS=
5209         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5210         enable dos_paths
5211         enable_weak os2threads
5212         ;;
5213     gnu/kfreebsd)
5214         add_cppflags -D_BSD_SOURCE
5215         ;;
5216     gnu)
5217         ;;
5218     qnx)
5219         add_cppflags -D_QNX_SOURCE
5220         network_extralibs="-lsocket"
5221         ;;
5222     symbian)
5223         SLIBSUF=".dll"
5224         enable dos_paths
5225         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5226         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5227         add_ldflags -Wl,--target1-abs,--no-undefined \
5228                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5229                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5230         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5231                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5232                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5233         ;;
5234     minix)
5235         ;;
5236     none)
5237         ;;
5238     *)
5239         die "Unknown OS '$target_os'."
5240         ;;
5241 esac
5242
5243 # test if creating links works
5244 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5245 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5246 mkdir "$link_dest"
5247 $ln_s "$link_dest" "$link_name"
5248 touch "$link_dest/test_file"
5249 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5250     # create link to source path
5251     [ -e src ] && rm src
5252     $ln_s "$source_path" src
5253     source_link=src
5254 else
5255     # creating directory links doesn't work
5256     # fall back to using the full source path
5257     source_link="$source_path"
5258 fi
5259 # cleanup
5260 rm -r "$link_dest"
5261 rm -r "$link_name"
5262
5263 # determine libc flavour
5264
5265 probe_libc(){
5266     pfx=$1
5267     pfx_no_=${pfx%_}
5268     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5269     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5270         eval ${pfx}libc_type=uclibc
5271         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5272     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5273         eval ${pfx}libc_type=glibc
5274         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5275     # MinGW headers can be installed on Cygwin, so check for newlib first.
5276     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5277         eval ${pfx}libc_type=newlib
5278         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5279     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5280     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5281         eval ${pfx}libc_type=mingw64
5282         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5283             add_compat msvcrt/snprintf.o
5284             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5285         fi
5286         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5287         eval test \$${pfx_no_}cc_type = "gcc" &&
5288             add_${pfx}cppflags -D__printf__=__gnu_printf__
5289         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5290             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5291     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5292          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5293         eval ${pfx}libc_type=mingw32
5294         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5295             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5296             die "ERROR: MinGW32 runtime version must be >= 3.15."
5297         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5298         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5299             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5300         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5301             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5302         eval test \$${pfx_no_}cc_type = "gcc" &&
5303             add_${pfx}cppflags -D__printf__=__gnu_printf__
5304     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5305         eval ${pfx}libc_type=msvcrt
5306         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5307             if [ "$pfx" = host_ ]; then
5308                 add_host_cppflags -Dsnprintf=_snprintf
5309             else
5310                 add_compat strtod.o strtod=avpriv_strtod
5311                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5312                                              _snprintf=avpriv_snprintf  \
5313                                              vsnprintf=avpriv_vsnprintf
5314             fi
5315         fi
5316         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5317         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5318         # 0x601 by default unless something else is set by the user.
5319         # This can easily lead to us detecting functions only present
5320         # in such new versions and producing binaries requiring windows 7.0.
5321         # Therefore explicitly set the default to Vista unless the user has
5322         # set something else on the command line.
5323         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5324         # family. For these cases, configure is free to use any functions
5325         # found in the SDK headers by default. (Alternatively, we could force
5326         # _WIN32_WINNT to 0x0602 in that case.)
5327         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5328             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5329 #ifdef WINAPI_FAMILY
5330 #include <winapifamily.h>
5331 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5332 #error not desktop
5333 #endif
5334 #endif
5335 EOF
5336         if [ "$pfx" = "" ]; then
5337             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5338             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5339         fi
5340     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5341         eval ${pfx}libc_type=klibc
5342     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5343         eval ${pfx}libc_type=bionic
5344     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5345         eval ${pfx}libc_type=solaris
5346         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5347     fi
5348     test_${pfx}cc <<EOF
5349 #include <time.h>
5350 void *v = localtime_r;
5351 EOF
5352 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5353 #include <time.h>
5354 void *v = localtime_r;
5355 EOF
5356
5357     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5358 }
5359
5360 probe_libc
5361 probe_libc host_
5362
5363 # hacks for compiler/libc/os combinations
5364
5365 case $libc_type in
5366     bionic)
5367         add_compat strtod.o strtod=avpriv_strtod
5368         ;;
5369 esac
5370
5371 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5372     add_cppflags '-I\$(SRC_PATH)/compat/float'
5373
5374 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5375
5376 set_default libdir
5377 : ${shlibdir_default:="$libdir"}
5378 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5379
5380 set_default $PATHS_LIST
5381 set_default nm
5382
5383 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5384
5385 enable_weak_pic() {
5386     disabled pic && return
5387     enable pic
5388     add_cppflags -DPIC
5389     case "$target_os" in
5390     mingw*|cygwin*|win*)
5391         ;;
5392     *)
5393         add_cflags -fPIC
5394         add_asflags -fPIC
5395         ;;
5396     esac
5397 }
5398
5399 enabled pic && enable_weak_pic
5400
5401 test_cc <<EOF || die "Symbol mangling check failed."
5402 int ff_extern;
5403 EOF
5404 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5405 extern_prefix=${sym%%ff_extern*}
5406
5407 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5408
5409 for restrict_keyword in restrict __restrict__ __restrict ""; do
5410     test_code cc "" "char * $restrict_keyword p" && break
5411 done
5412
5413 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5414
5415 # The global variable ensures the bits appear unchanged in the object file.
5416 test_cc <<EOF || die "endian test failed"
5417 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5418 EOF
5419 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5420
5421 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5422
5423 if ! enabled ppc64 || enabled bigendian; then
5424     disable vsx
5425 fi
5426
5427 check_gas() {
5428     log "check_gas using '$as' as AS"
5429     # :vararg is used on aarch64, arm and ppc altivec
5430     test_as <<EOF || return 1
5431 .macro m n, y:vararg=0
5432 \n: .int \y
5433 .endm
5434 m x
5435 EOF
5436     # .altmacro is only used in arm asm
5437     ! enabled arm || check_as gnu_as ".altmacro"
5438 }
5439
5440 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5441     nogas=:
5442     enabled_any arm aarch64 && nogas=die
5443     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5444     as_noop=-v
5445
5446     case $as_type in
5447         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5448         gcc)  gaspp_as_type=gas ;;
5449         *)    gaspp_as_type=$as_type ;;
5450     esac
5451
5452     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5453
5454     test "${as#*gas-preprocessor.pl}" != "$as" ||
5455     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5456         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5457
5458     if ! check_gas ; then
5459         as=${gas:=$as}
5460         check_gas || \
5461             $nogas "GNU assembler not found, install/update gas-preprocessor"
5462     fi
5463
5464     check_as as_func ".func test
5465                       .endfunc"
5466 fi
5467
5468 check_inline_asm inline_asm_labels '"1:\n"'
5469
5470 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5471
5472 if enabled aarch64; then
5473     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5474     # internal assembler in clang 3.3 does not support this instruction
5475     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5476     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5477
5478     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5479
5480 elif enabled alpha; then
5481
5482     check_cflags -mieee
5483
5484 elif enabled arm; then
5485
5486     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5487     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5488 float func(float a, float b){ return a+b; }
5489 EOF
5490     enabled thumb && check_cflags -mthumb || check_cflags -marm
5491
5492     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5493         :
5494     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5495         :
5496     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5497         case "${cross_prefix:-$cc}" in
5498             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5499             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5500 __asm__ (".eabi_attribute 28, 1");
5501 int main(void) { return 0; }
5502 EOF
5503         esac
5504         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5505     fi
5506
5507     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5508     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5509     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5510     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5511     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5512     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5513     enabled setend  && check_insn setend  'setend be'
5514
5515     [ $target_os = linux ] || [ $target_os = android ] ||
5516         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5517             $ARCH_EXT_LIST_ARM
5518
5519     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5520
5521     check_as as_arch_directive ".arch armv7-a"
5522     check_as as_fpu_directive  ".fpu neon"
5523
5524     # llvm's integrated assembler supports .object_arch from llvm 3.5
5525     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5526         check_as as_object_arch ".object_arch armv4"
5527
5528     # MS armasm fails to assemble our PIC constructs
5529     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5530
5531 elif enabled mips; then
5532
5533     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5534     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5535     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5536
5537     # Enable minimum ISA based on selected options
5538     if enabled mips64; then
5539         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5540         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5541         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5542     else
5543         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5544         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5545         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5546         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5547     fi
5548
5549     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5550     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5551     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5552     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5553     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5554
5555     if enabled bigendian && enabled msa; then
5556         disable msa
5557     fi
5558
5559 elif enabled parisc; then
5560
5561     if enabled gcc; then
5562         case $($cc -dumpversion) in
5563             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5564         esac
5565     fi
5566
5567 elif enabled ppc; then
5568
5569     enable local_aligned
5570
5571     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5572     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5573     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5574     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5575
5576     if enabled altivec; then
5577         check_cflags -maltivec -mabi=altivec
5578
5579         # check if our compiler supports Motorola AltiVec C API
5580         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5581                                     vector signed int v2 = (vector signed int) { 1 };
5582                                     v1 = vec_add(v1, v2);"
5583
5584         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5585     fi
5586
5587     if enabled vsx; then
5588         check_cflags -mvsx &&
5589         check_cc vsx altivec.h "int v[4] = { 0 };
5590                                 vector signed int v1 = vec_vsx_ld(0, v);"
5591     fi
5592
5593     if enabled power8; then
5594         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5595     fi
5596
5597 elif enabled x86; then
5598
5599     check_builtin rdtsc    intrin.h   "__rdtsc()"
5600     check_builtin mm_empty mmintrin.h "_mm_empty()"
5601
5602     enable local_aligned
5603
5604     # check whether EBP is available on x86
5605     # As 'i' is stored on the stack, this program will crash
5606     # if the base pointer is used to access it because the
5607     # base pointer is cleared in the inline assembly code.
5608     check_exec_crash <<EOF && enable ebp_available
5609 volatile int i=0;
5610 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5611 return i;
5612 EOF
5613
5614     # check whether EBX is available on x86
5615     check_inline_asm ebx_available '""::"b"(0)' &&
5616         check_inline_asm ebx_available '"":::"%ebx"'
5617
5618     # check whether xmm clobbers are supported
5619     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5620
5621     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5622         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5623
5624     # check whether binutils is new enough to compile SSSE3/MMXEXT
5625     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5626     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5627
5628     probe_x86asm(){
5629         x86asmexe_probe=$1
5630         if test_cmd $x86asmexe_probe -v; then
5631             x86asmexe=$x86asmexe_probe
5632             x86asm_type=nasm
5633             x86asm_debug="-g -F dwarf"
5634             X86ASMDEP=
5635             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5636         elif test_cmd $x86asmexe_probe --version; then
5637             x86asmexe=$x86asmexe_probe
5638             x86asm_type=yasm
5639             x86asm_debug="-g dwarf2"
5640             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5641             X86ASM_DEPFLAGS=
5642         fi
5643         test_x86asm "movbe ecx, [5]" && enable x86asm
5644     }
5645
5646     if ! disabled_any asm mmx x86asm; then
5647         disable x86asm
5648         for program in $x86asmexe nasm yasm; do
5649             probe_x86asm $program && break
5650         done
5651         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5652         X86ASMFLAGS="-f $objformat"
5653         enabled pic               && append X86ASMFLAGS "-DPIC"
5654         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5655         case "$objformat" in
5656             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5657         esac
5658
5659         test_x86asm "vmovdqa32 [eax]{k1}{z}, zmm0"    || disable avx512_external
5660         test_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5661         test_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5662         test_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5663         test_x86asm "CPU amdnop" || disable cpunop
5664     fi
5665
5666     case "$cpu" in
5667         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5668             disable fast_clz
5669         ;;
5670     esac
5671
5672 fi
5673
5674 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5675
5676 check_ldflags -Wl,--as-needed
5677 check_ldflags -Wl,-z,noexecstack
5678
5679 if ! disabled network; then
5680     check_func getaddrinfo $network_extralibs
5681     check_func inet_aton $network_extralibs
5682
5683     check_type netdb.h "struct addrinfo"
5684     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5685     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5686     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5687     check_type poll.h "struct pollfd"
5688     check_type netinet/sctp.h "struct sctp_event_subscribe"
5689     check_struct "sys/socket.h" "struct msghdr" msg_flags
5690     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5691     check_type netinet/in.h "struct sockaddr_in6"
5692     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5693     check_type "sys/types.h sys/socket.h" socklen_t
5694
5695     # Prefer arpa/inet.h over winsock2
5696     if check_header arpa/inet.h ; then
5697         check_func closesocket
5698     elif check_header winsock2.h ; then
5699         check_func_headers winsock2.h closesocket -lws2 &&
5700             network_extralibs="-lws2" ||
5701         { check_func_headers winsock2.h closesocket -lws2_32 &&
5702             network_extralibs="-lws2_32"; } || disable winsock2_h network
5703         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5704
5705         check_type ws2tcpip.h socklen_t
5706         check_type ws2tcpip.h "struct addrinfo"
5707         check_type ws2tcpip.h "struct group_source_req"
5708         check_type ws2tcpip.h "struct ip_mreq_source"
5709         check_type ws2tcpip.h "struct ipv6_mreq"
5710         check_type winsock2.h "struct pollfd"
5711         check_struct winsock2.h "struct sockaddr" sa_len
5712         check_type ws2tcpip.h "struct sockaddr_in6"
5713         check_type ws2tcpip.h "struct sockaddr_storage"
5714     else
5715         disable network
5716     fi
5717 fi
5718
5719 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5720 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5721 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5722 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5723 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5724 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5725 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5726
5727 case "$custom_allocator" in
5728     jemalloc)
5729         # jemalloc by default does not use a prefix
5730         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5731     ;;
5732     tcmalloc)
5733         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5734         malloc_prefix=tc_
5735     ;;
5736 esac
5737
5738 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5739 check_func  ${malloc_prefix}memalign            && enable memalign
5740 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5741
5742 check_func  access
5743 check_func_headers stdlib.h arc4random
5744 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5745 check_func  fcntl
5746 check_func  fork
5747 check_func  gethrtime
5748 check_func  getopt
5749 check_func  getrusage
5750 check_func  gettimeofday
5751 check_func  isatty
5752 check_func  mkstemp
5753 check_func  mmap
5754 check_func  mprotect
5755 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5756 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5757 check_func  sched_getaffinity
5758 check_func  setrlimit
5759 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5760 check_func  strerror_r
5761 check_func  sysconf
5762 check_func  sysctl
5763 check_func  usleep
5764
5765 check_func_headers conio.h kbhit
5766 check_func_headers io.h setmode
5767 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5768 check_func_headers mach/mach_time.h mach_absolute_time
5769 check_func_headers stdlib.h getenv
5770 check_func_headers sys/stat.h lstat
5771
5772 check_func_headers windows.h GetProcessAffinityMask
5773 check_func_headers windows.h GetProcessTimes
5774 check_func_headers windows.h GetSystemTimeAsFileTime
5775 check_func_headers windows.h LoadLibrary
5776 check_func_headers windows.h MapViewOfFile
5777 check_func_headers windows.h PeekNamedPipe
5778 check_func_headers windows.h SetConsoleTextAttribute
5779 check_func_headers windows.h SetConsoleCtrlHandler
5780 check_func_headers windows.h Sleep
5781 check_func_headers windows.h VirtualAlloc
5782 check_func_headers glob.h glob
5783 enabled xlib &&
5784     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5785
5786 check_header direct.h
5787 check_header dirent.h
5788 check_header dxgidebug.h
5789 check_header dxva.h
5790 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5791 check_header io.h
5792 check_header libcrystalhd/libcrystalhd_if.h
5793 check_header malloc.h
5794 check_header net/udplite.h
5795 check_header poll.h
5796 check_header sys/param.h
5797 check_header sys/resource.h
5798 check_header sys/select.h
5799 check_header sys/time.h
5800 check_header sys/un.h
5801 check_header termios.h
5802 check_header unistd.h
5803 check_header valgrind/valgrind.h
5804 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5805 check_header windows.h
5806 check_header X11/extensions/XvMClib.h
5807 check_header asm/types.h
5808
5809 # it seems there are versions of clang in some distros that try to use the
5810 # gcc headers, which explodes for stdatomic
5811 # so we also check that atomics actually work here
5812 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5813
5814 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5815 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5816 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5817 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5818 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5819
5820 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5821 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5822 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5823
5824 enabled appkit       && check_apple_framework AppKit
5825 enabled audiotoolbox && check_apple_framework AudioToolbox
5826 enabled avfoundation && check_apple_framework AVFoundation
5827 enabled coreimage    && check_apple_framework CoreImage
5828 enabled videotoolbox && check_apple_framework VideoToolbox
5829
5830 check_apple_framework CoreFoundation
5831 check_apple_framework CoreMedia
5832 check_apple_framework CoreVideo
5833
5834 enabled avfoundation && {
5835     disable coregraphics applicationservices
5836     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5837     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5838
5839 enabled videotoolbox && {
5840     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5841     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5842 }
5843
5844 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5845
5846 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5847 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5848 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5849 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5850 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5851
5852 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5853 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5854 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5855 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5856 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5857 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5858 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5859 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5860 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5861 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5862
5863 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5864
5865 if ! disabled ffnvcodec; then
5866     check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.1" \
5867         "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5868 fi
5869
5870 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5871
5872 if ! disabled w32threads && ! enabled pthreads; then
5873     check_func_headers "windows.h process.h" _beginthreadex &&
5874         check_type "windows.h" CONDITION_VARIABLE &&
5875         enable w32threads || disable w32threads
5876     if ! enabled w32threads && enabled winrt; then
5877         check_func_headers "windows.h" CreateThread &&
5878             enable w32threads || disable w32threads
5879     fi
5880 fi
5881
5882 # check for some common methods of building with pthread support
5883 # do this before the optional library checks as some of them require pthreads
5884 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5885     if check_lib pthreads pthread.h pthread_join   -pthread &&
5886        check_lib pthreads pthread.h pthread_create -pthread; then
5887         add_cflags -pthread
5888     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5889          check_lib pthreads pthread.h pthread_create -pthreads; then
5890         add_cflags -pthreads
5891     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5892          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5893         add_cflags -ldl -pthread
5894     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5895          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5896         :
5897     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5898          check_lib pthreads pthread.h pthread_create -lpthread; then
5899         :
5900     elif check_func pthread_join && check_func pthread_create; then
5901         enable pthreads
5902     fi
5903     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5904
5905     if enabled pthreads; then
5906         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5907         check_func pthread_cancel $pthreads_extralibs
5908     fi
5909 fi
5910
5911 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5912 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5913 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5914
5915 # On some systems dynamic loading requires no extra linker flags
5916 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5917
5918 check_lib libm math.h sin -lm
5919
5920 atan2f_args=2
5921 copysign_args=2
5922 hypot_args=2
5923 ldexpf_args=2
5924 powf_args=2
5925
5926 for func in $MATH_FUNCS; do
5927     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5928 done
5929
5930 for func in $COMPLEX_FUNCS; do
5931     eval check_complexfunc $func \${${func}_args:-1}
5932 done
5933
5934 # these are off by default, so fail if requested and not available
5935 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5936 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5937 enabled decklink          && { require_header DeckLinkAPI.h &&
5938                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5939 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5940 enabled frei0r            && require_header frei0r.h
5941 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5942 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5943 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5944 enabled ladspa            && require_header ladspa.h
5945 enabled libaom            && require_pkg_config libaom "aom >= 0.1.0" aom/aom_codec.h aom_codec_version
5946 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5947 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5948 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5949 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5950 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5951 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5952                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5953                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5954 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5955 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
5956 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5957 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5958 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5959                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5960                                  warn "using libfdk without pkg-config"; } }
5961 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"
5962 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5963 enabled fontconfig        && enable libfontconfig
5964 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5965 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5966 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5967 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5968                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5969 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5970                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5971                                done || die "ERROR: libgsm not found"; }
5972 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5973 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5974 # While it may appear that require is being used as a pkg-config
5975 # fallback for libmfx, it is actually being used to detect a different
5976 # installation route altogether.  If libmfx is installed via the Intel
5977 # Media SDK or Intel Media Server Studio, these don't come with
5978 # pkg-config support.  Instead, users should make sure that the build
5979 # can find the libraries and headers through other means.
5980 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5981                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5982 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5983 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
5984 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5985 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5986                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5987                                die "ERROR: libnpp not found"; }
5988 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5989 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5990 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5991                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5992                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5993                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5994 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5995 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5996                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5997 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5998 enabled libopus           && {
5999     enabled libopus_decoder && {
6000         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6001     }
6002     enabled libopus_encoder && {
6003         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6004     }
6005 }
6006 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6007 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6008 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6009 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6010 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6011 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6012                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6013 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6014 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6015 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6016 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6017 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6018 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6019 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6020 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6021                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6022                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6023 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6024 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6025 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
6026 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6027 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6028                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6029
6030 enabled libvpx            && {
6031     enabled libvpx_vp8_decoder && {
6032         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6033             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6034                 die "ERROR: libvpx decoder version must be >=1.4.0";
6035     }
6036     enabled libvpx_vp8_encoder && {
6037         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6038             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6039                 die "ERROR: libvpx encoder version must be >=1.4.0";
6040     }
6041     enabled libvpx_vp9_decoder && {
6042         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6043             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6044     }
6045     enabled libvpx_vp9_encoder && {
6046         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6047             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6048     }
6049     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6050         die "libvpx enabled but no supported decoders found"
6051     fi
6052 }
6053
6054 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6055 enabled libwebp           && {
6056     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6057     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6058 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6059                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6060                                  warn "using libx264 without pkg-config"; } } &&
6061                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6062                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6063 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6064                              require_cpp_condition x265.h "X265_BUILD >= 68"
6065 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6066 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6067 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6068 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6069 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6070                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6071                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6072 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6073 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6074 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6075                                { ! enabled cross_compile &&
6076                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6077                                  add_ldflags -L/opt/vc/lib/ &&
6078                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6079                                die "ERROR: mmal not found" &&
6080                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6081 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6082                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6083                                die "ERROR: openal not found"; } &&
6084                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6085                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6086 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6087                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6088                                die "ERROR: opencl not found"; } &&
6089                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6090                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6091                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6092 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6093                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6094                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6095                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6096                                die "ERROR: opengl not found."
6097                              }
6098 enabled omx               && require_header OMX_Core.h
6099 enabled omx_rpi           && { check_header OMX_Core.h ||
6100                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6101                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6102 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6103                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6104                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6105                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6106                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6107                                die "ERROR: openssl not found"; }
6108 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6109                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6110                                { enabled libdrm ||
6111                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6112                              }
6113
6114 if enabled gcrypt; then
6115     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6116     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6117         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6118         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6119         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6120             die "ERROR: gcrypt not found"
6121         add_cflags $gcrypt_cflags
6122     else
6123         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6124     fi
6125 fi
6126
6127 if enabled sdl2; then
6128     SDL2_CONFIG="${cross_prefix}sdl2-config"
6129     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6130     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6131         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6132         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6133         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6134         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6135         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6136             enable sdl2
6137     fi
6138     if test $target_os = "mingw32"; then
6139         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6140     fi
6141 fi
6142
6143 if enabled decklink; then
6144     case $target_os in
6145         mingw32*|mingw64*|win32|win64)
6146             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6147             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6148             ;;
6149     esac
6150 fi
6151
6152 enabled securetransport &&
6153     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6154     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6155         disable securetransport
6156
6157 enabled securetransport &&
6158     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6159
6160 enabled schannel &&
6161     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6162     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6163     schannel_extralibs="-lsecur32" ||
6164         disable schannel
6165
6166 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6167 enabled makeinfo \
6168     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6169     && enable makeinfo_html || disable makeinfo_html
6170 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6171 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6172 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6173 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6174
6175 # check V4L2 codecs available in the API
6176 check_header linux/fb.h
6177 check_header linux/videodev2.h
6178 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6179 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6180 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6181 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6182 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6183 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6184 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6185 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6186 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6187 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6188 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6189
6190 check_header sys/videoio.h
6191 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6192
6193 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6194 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6195 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6196 # w32api 3.12 had it defined wrong
6197 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6198
6199 check_type "dshow.h" IBaseFilter
6200
6201 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6202 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6203     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6204     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6205     check_header "dev/ic/bt8xx.h"
6206
6207 if check_struct sys/soundcard.h audio_buf_info bytes; then
6208     enable_sanitized sys/soundcard.h
6209 else
6210     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6211     #include <sys/soundcard.h>
6212     audio_buf_info abc;
6213 EOF
6214 fi
6215
6216 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6217     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6218
6219 enabled libjack &&
6220     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6221
6222 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6223
6224 if enabled libcdio; then
6225     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6226     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6227     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6228     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6229     die "ERROR: No usable libcdio/cdparanoia found"
6230 fi
6231
6232 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6233     disable libxcb_shm libxcb_shape libxcb_xfixes
6234
6235 if enabled libxcb; then
6236     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6237     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6238     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6239 fi
6240
6241 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6242
6243 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6244 # the desktop api partition
6245 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6246 #ifdef WINAPI_FAMILY
6247 #include <winapifamily.h>
6248 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6249 #error desktop, not uwp
6250 #else
6251 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6252 #endif
6253 #else
6254 #error no family set
6255 #endif
6256 EOF
6257
6258 enabled vaapi &&
6259     check_lib vaapi va/va.h vaInitialize -lva
6260
6261 enabled vaapi &&
6262     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6263
6264 if enabled vaapi; then
6265     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6266     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6267 fi
6268
6269 enabled vaapi &&
6270     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6271
6272 if enabled_all opencl libdrm ; then
6273     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6274         enable opencl_drm_beignet
6275     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6276         enable opencl_drm_arm
6277 fi
6278
6279 if enabled_all opencl vaapi ; then
6280     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6281     if enabled libmfx ; then
6282         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6283             enable opencl_vaapi_intel_media
6284     fi
6285 fi
6286
6287 if enabled_all opencl dxva2 ; then
6288     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6289         enable opencl_dxva2
6290 fi
6291
6292 if enabled_all opencl d3d11va ; then
6293     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6294         enable opencl_d3d11
6295 fi
6296
6297 enabled vdpau &&
6298     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6299
6300 enabled vdpau &&
6301     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6302
6303 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6304
6305 if enabled x86; then
6306     case $target_os in
6307         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6308             ;;
6309         *)
6310             disable ffnvcodec cuvid nvdec nvenc
6311             ;;
6312     esac
6313 else
6314     disable ffnvcodec cuvid nvdec nvenc
6315 fi
6316
6317 enabled ffnvcodec && enable cuda
6318
6319 enabled nvenc &&
6320     test_cc -I$source_path <<EOF || disable nvenc
6321 #include <ffnvcodec/nvEncodeAPI.h>
6322 NV_ENCODE_API_FUNCTION_LIST flist;
6323 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6324 int main(void) { return 0; }
6325 EOF
6326
6327 enabled amf &&
6328     check_cpp_condition amf "AMF/core/Version.h" \
6329         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6330
6331 # Funny iconv installations are not unusual, so check it after all flags have been set
6332 if enabled libc_iconv; then
6333     check_func_headers iconv.h iconv
6334 elif enabled iconv; then
6335     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6336 fi
6337
6338 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6339
6340 # add some useful compiler flags if supported
6341 check_cflags -Wdeclaration-after-statement
6342 check_cflags -Wall
6343 check_cflags -Wdisabled-optimization
6344 check_cflags -Wpointer-arith
6345 check_cflags -Wredundant-decls
6346 check_cflags -Wwrite-strings
6347 check_cflags -Wtype-limits
6348 check_cflags -Wundef
6349 check_cflags -Wmissing-prototypes
6350 check_cflags -Wno-pointer-to-int-cast
6351 check_cflags -Wstrict-prototypes
6352 check_cflags -Wempty-body
6353
6354 if enabled extra_warnings; then
6355     check_cflags -Wcast-qual
6356     check_cflags -Wextra
6357     check_cflags -Wpedantic
6358 fi
6359
6360 check_disable_warning(){
6361     warning_flag=-W${1#-Wno-}
6362     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6363 }
6364
6365 test_cflags -Werror=unused-command-line-argument &&
6366     append unknown_warning_flags "-Werror=unused-command-line-argument"
6367 test_cflags -Werror=unknown-warning-option &&
6368     append unknown_warning_flags "-Werror=unknown-warning-option"
6369
6370 check_disable_warning -Wno-parentheses
6371 check_disable_warning -Wno-switch
6372 check_disable_warning -Wno-format-zero-length
6373 check_disable_warning -Wno-pointer-sign
6374 check_disable_warning -Wno-unused-const-variable
6375 check_disable_warning -Wno-bool-operation
6376
6377 check_disable_warning_headers(){
6378     warning_flag=-W${1#-Wno-}
6379     test_cflags $warning_flag && add_cflags_headers $1
6380 }
6381
6382 check_disable_warning_headers -Wno-deprecated-declarations
6383 check_disable_warning_headers -Wno-unused-variable
6384
6385 test_cc <<EOF && enable blocks_extension
6386 void (^block)(void);
6387 EOF
6388
6389 # add some linker flags
6390 check_ldflags -Wl,--warn-common
6391 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6392 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6393 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6394
6395 # add some strip flags
6396 check_stripflags -x
6397
6398 enabled neon_clobber_test &&
6399     check_ldflags -Wl,--wrap,avcodec_open2              \
6400                   -Wl,--wrap,avcodec_decode_audio4      \
6401                   -Wl,--wrap,avcodec_decode_video2      \
6402                   -Wl,--wrap,avcodec_decode_subtitle2   \
6403                   -Wl,--wrap,avcodec_encode_audio2      \
6404                   -Wl,--wrap,avcodec_encode_video2      \
6405                   -Wl,--wrap,avcodec_encode_subtitle    \
6406                   -Wl,--wrap,avcodec_send_packet        \
6407                   -Wl,--wrap,avcodec_receive_packet     \
6408                   -Wl,--wrap,avcodec_send_frame         \
6409                   -Wl,--wrap,avcodec_receive_frame      \
6410                   -Wl,--wrap,swr_convert                \
6411                   -Wl,--wrap,avresample_convert ||
6412     disable neon_clobber_test
6413
6414 enabled xmm_clobber_test &&
6415     check_ldflags -Wl,--wrap,avcodec_open2              \
6416                   -Wl,--wrap,avcodec_decode_audio4      \
6417                   -Wl,--wrap,avcodec_decode_video2      \
6418                   -Wl,--wrap,avcodec_decode_subtitle2   \
6419                   -Wl,--wrap,avcodec_encode_audio2      \
6420                   -Wl,--wrap,avcodec_encode_video2      \
6421                   -Wl,--wrap,avcodec_encode_subtitle    \
6422                   -Wl,--wrap,avcodec_send_packet        \
6423                   -Wl,--wrap,avcodec_receive_packet     \
6424                   -Wl,--wrap,avcodec_send_frame         \
6425                   -Wl,--wrap,avcodec_receive_frame      \
6426                   -Wl,--wrap,swr_convert                \
6427                   -Wl,--wrap,avresample_convert         \
6428                   -Wl,--wrap,sws_scale ||
6429     disable xmm_clobber_test
6430
6431 check_ld "cc" proper_dce <<EOF
6432 extern const int array[512];
6433 static inline int func(void) { return array[0]; }
6434 int main(void) { return 0; }
6435 EOF
6436
6437 if enabled proper_dce; then
6438     echo "X { local: *; };" > $TMPV
6439     if test_ldflags -Wl,${version_script},$TMPV; then
6440         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6441         quotes='""'
6442         test_cc <<EOF && enable symver_asm_label
6443 void ff_foo(void) __asm__ ("av_foo@VERSION");
6444 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6445 EOF
6446         test_cc <<EOF && enable symver_gnu_asm
6447 __asm__(".symver ff_foo,av_foo@VERSION");
6448 void ff_foo(void) {}
6449 EOF
6450     fi
6451 fi
6452
6453 if [ -z "$optflags" ]; then
6454     if enabled small; then
6455         optflags=$cflags_size
6456     elif enabled optimizations; then
6457         optflags=$cflags_speed
6458     else
6459         optflags=$cflags_noopt
6460     fi
6461 fi
6462
6463 if [ -z "$nvccflags" ]; then
6464     nvccflags=$nvccflags_default
6465 fi
6466
6467 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6468     nvccflags="$nvccflags -m64"
6469 else
6470     nvccflags="$nvccflags -m32"
6471 fi
6472
6473 check_optflags(){
6474     check_cflags "$@"
6475     enabled lto && check_ldflags "$@"
6476 }
6477
6478 check_optflags $optflags
6479 check_optflags -fno-math-errno
6480 check_optflags -fno-signed-zeros
6481
6482 if enabled lto; then
6483     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6484     check_cflags  -flto
6485     check_ldflags -flto $cpuflags
6486     disable inline_asm_direct_symbol_refs
6487 fi
6488
6489 enabled ftrapv && check_cflags -ftrapv
6490
6491 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6492 int x;
6493 EOF
6494
6495
6496 if enabled icc; then
6497     # Just warnings, no remarks
6498     check_cflags -w1
6499     # -wd: Disable following warnings
6500     # 144, 167, 556: -Wno-pointer-sign
6501     # 188: enumerated type mixed with another type
6502     # 1292: attribute "foo" ignored
6503     # 1419: external declaration in primary source file
6504     # 10006: ignoring unknown option -fno-signed-zeros
6505     # 10148: ignoring unknown option -Wno-parentheses
6506     # 10156: ignoring option '-W'; no argument required
6507     # 13200: No EMMS instruction before call to function
6508     # 13203: No EMMS instruction before return from function
6509     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6510     # 11030: Warning unknown option --as-needed
6511     # 10156: ignoring option '-export'; no argument required
6512     check_ldflags -wd10156,11030
6513     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6514     enable ebp_available
6515     # The test above does not test linking
6516     enabled lto && disable symver_asm_label
6517     if enabled x86_32; then
6518         icc_version=$($cc -dumpversion)
6519         test ${icc_version%%.*} -ge 11 &&
6520             check_cflags -falign-stack=maintain-16-byte ||
6521             disable aligned_stack
6522     fi
6523 elif enabled gcc; then
6524     check_optflags -fno-tree-vectorize
6525     check_cflags -Werror=format-security
6526     check_cflags -Werror=implicit-function-declaration
6527     check_cflags -Werror=missing-prototypes
6528     check_cflags -Werror=return-type
6529     check_cflags -Werror=vla
6530     check_cflags -Wformat
6531     check_cflags -fdiagnostics-color=auto
6532     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6533     if enabled x86_32; then
6534         case $target_os in
6535         *bsd*)
6536             # BSDs don't guarantee a 16 byte aligned stack, but we can
6537             # request GCC to try to maintain 16 byte alignment throughout
6538             # function calls. Library entry points that might call assembly
6539             # functions align the stack. (The parameter means 2^4 bytes.)
6540             check_cflags -mpreferred-stack-boundary=4
6541             ;;
6542         esac
6543     fi
6544 elif enabled llvm_gcc; then
6545     check_cflags -mllvm -stack-alignment=16
6546 elif enabled clang; then
6547     if enabled x86_32; then
6548         # Clang doesn't support maintaining alignment without assuming the
6549         # same alignment in every function. If 16 byte alignment would be
6550         # enabled, one would also have to either add attribute_align_arg on
6551         # every single entry point into the libraries or enable -mstackrealign
6552         # (doing stack realignment in every single function).
6553         case $target_os in
6554         mingw32|win32|*bsd*)
6555             disable aligned_stack
6556             ;;
6557         *)
6558             check_cflags -mllvm -stack-alignment=16
6559             check_cflags -mstack-alignment=16
6560             ;;
6561         esac
6562     else
6563         check_cflags -mllvm -stack-alignment=16
6564         check_cflags -mstack-alignment=16
6565     fi
6566     check_cflags -Qunused-arguments
6567     check_cflags -Werror=implicit-function-declaration
6568     check_cflags -Werror=missing-prototypes
6569     check_cflags -Werror=return-type
6570 elif enabled cparser; then
6571     add_cflags -Wno-missing-variable-declarations
6572     add_cflags -Wno-empty-statement
6573 elif enabled armcc; then
6574     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6575     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6576     # 2523: use of inline assembly is deprecated
6577     add_cflags -W${armcc_opt},--diag_suppress=2523
6578     add_cflags -W${armcc_opt},--diag_suppress=1207
6579     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6580     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6581     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6582     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6583 elif enabled pathscale; then
6584     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6585     disable inline_asm
6586 elif enabled_any msvc icl; then
6587     enabled x86_32 && disable aligned_stack
6588     enabled_all x86_32 debug && add_cflags -Oy-
6589     enabled debug && add_ldflags -debug
6590     enable pragma_deprecated
6591     if enabled icl; then
6592         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6593         # (correctly) on icl 13.x.
6594         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6595             add_cflags -Qansi-alias
6596         # Some inline asm is not compilable in debug
6597         if enabled debug; then
6598             disable ebp_available
6599             disable ebx_available
6600         fi
6601     fi
6602     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6603     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6604     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6605     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6606     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6607     # MSVC 2013 and newer can handle it fine.
6608     # If this declspec fails, force including stdlib.h before the restrict redefinition
6609     # happens in config.h.
6610     if [ $restrict_keyword != restrict ]; then
6611         test_cc <<EOF || add_cflags -FIstdlib.h
6612 __declspec($restrict_keyword) void *foo(int);
6613 EOF
6614     fi
6615     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6616     # Issue has been fixed in MSVC v19.00.24218.
6617     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6618         check_cflags -d2SSAOptimizer-
6619     # enable utf-8 source processing on VS2015 U2 and newer
6620     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6621         add_cflags -utf-8
6622 fi
6623
6624 for pfx in "" host_; do
6625     varname=${pfx%_}cc_type
6626     eval "type=\$$varname"
6627     if [ "$type" = "msvc" ]; then
6628         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6629 static inline int foo(int a) { return a; }
6630 EOF
6631     fi
6632 done
6633
6634 case $as_type in
6635     clang)
6636         add_asflags -Qunused-arguments
6637     ;;
6638 esac
6639
6640 case $ld_type in
6641     clang)
6642         check_ldflags -Qunused-arguments
6643     ;;
6644 esac
6645
6646 enable frame_thread_encoder
6647
6648 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6649
6650 check_deps $CONFIG_LIST       \
6651            $CONFIG_EXTRA      \
6652            $HAVE_LIST         \
6653            $ALL_COMPONENTS    \
6654
6655 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"
6656 enabled avresample && warn "Building with deprecated library libavresample"
6657
6658 if test $target_os = "haiku"; then
6659     disable memalign
6660     disable posix_memalign
6661 fi
6662
6663 flatten_extralibs(){
6664     unset nested_entries
6665     list_name=$1
6666     eval list=\$${1}
6667     for entry in $list; do
6668         entry_copy=$entry
6669         resolve entry_copy
6670         append nested_entries $(filter '*_extralibs' $entry_copy)
6671         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6672         eval $entry="\$flat_entries"
6673     done
6674     append $list_name "$nested_entries"
6675
6676     resolve nested_entries
6677     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6678         flatten_extralibs $list_name
6679     fi
6680 }
6681
6682 flatten_extralibs_wrapper(){
6683     list_name=$1
6684     flatten_extralibs $list_name
6685     unique $list_name
6686     resolve $list_name
6687     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6688     eval printf \''%s'\' \""\$$list_name"\"
6689 }
6690
6691 for linkunit in $LIBRARY_LIST; do
6692     unset current_extralibs
6693     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6694     for comp in ${components}; do
6695         enabled $comp || continue
6696         comp_extralibs="${comp}_extralibs"
6697         append current_extralibs $comp_extralibs
6698     done
6699     eval prepend ${linkunit}_extralibs $current_extralibs
6700 done
6701
6702 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6703     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6704 done
6705
6706 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6707
6708 for thread in $THREADS_LIST; do
6709     if enabled $thread; then
6710         test -n "$thread_type" &&
6711             die "ERROR: Only one thread type must be selected." ||
6712             thread_type="$thread"
6713     fi
6714 done
6715
6716 if disabled stdatomic; then
6717     if enabled atomics_gcc; then
6718         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6719     elif enabled atomics_win32; then
6720         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6721     elif enabled atomics_suncc; then
6722         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6723     elif enabled pthreads; then
6724         add_compat atomics/pthread/stdatomic.o
6725         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6726     else
6727         enabled threads && die "Threading is enabled, but no atomics are available"
6728         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6729     fi
6730 fi
6731
6732 # Check if requested libraries were found.
6733 for lib in $AUTODETECT_LIBS; do
6734     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6735 done
6736
6737 enabled zlib && add_cppflags -DZLIB_CONST
6738
6739 # conditional library dependencies, in linking order
6740 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6741 enabled afir_filter         && prepend avfilter_deps "avcodec"
6742 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6743 enabled aresample_filter    && prepend avfilter_deps "swresample"
6744 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6745 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6746 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6747 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6748 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6749 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6750 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6751 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6752 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6753 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6754 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6755 enabled pan_filter          && prepend avfilter_deps "swresample"
6756 enabled pp_filter           && prepend avfilter_deps "postproc"
6757 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6758 enabled resample_filter && prepend avfilter_deps "avresample"
6759 enabled sab_filter          && prepend avfilter_deps "swscale"
6760 enabled scale_filter    && prepend avfilter_deps "swscale"
6761 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6762 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6763 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6764 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6765 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6766 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6767 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6768 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6769 enabled spp_filter          && prepend avfilter_deps "avcodec"
6770 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6771 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6772 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6773
6774 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6775
6776 #FIXME
6777 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6778
6779 enabled opus_decoder    && prepend avcodec_deps "swresample"
6780
6781 expand_deps(){
6782     lib_deps=${1}_deps
6783     eval "deps=\$$lib_deps"
6784     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6785     unique $lib_deps
6786 }
6787
6788 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6789 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6790
6791 map 'expand_deps $v' $LIBRARY_LIST
6792
6793 if test "$quiet" != "yes"; then
6794
6795 echo "install prefix            $prefix"
6796 echo "source path               $source_path"
6797 echo "C compiler                $cc"
6798 echo "C library                 $libc_type"
6799 if test "$host_cc" != "$cc"; then
6800     echo "host C compiler           $host_cc"
6801     echo "host C library            $host_libc_type"
6802 fi
6803 echo "ARCH                      $arch ($cpu)"
6804 if test "$build_suffix" != ""; then
6805     echo "build suffix              $build_suffix"
6806 fi
6807 if test "$progs_suffix" != ""; then
6808     echo "progs suffix              $progs_suffix"
6809 fi
6810 if test "$extra_version" != ""; then
6811     echo "version string suffix     $extra_version"
6812 fi
6813 echo "big-endian                ${bigendian-no}"
6814 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6815 if enabled x86; then
6816     echo "standalone assembly       ${x86asm-no}"
6817     echo "x86 assembler             ${x86asmexe}"
6818     echo "MMX enabled               ${mmx-no}"
6819     echo "MMXEXT enabled            ${mmxext-no}"
6820     echo "3DNow! enabled            ${amd3dnow-no}"
6821     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6822     echo "SSE enabled               ${sse-no}"
6823     echo "SSSE3 enabled             ${ssse3-no}"
6824     echo "AESNI enabled             ${aesni-no}"
6825     echo "AVX enabled               ${avx-no}"
6826     echo "AVX2 enabled              ${avx2-no}"
6827     echo "AVX-512 enabled           ${avx512-no}"
6828     echo "XOP enabled               ${xop-no}"
6829     echo "FMA3 enabled              ${fma3-no}"
6830     echo "FMA4 enabled              ${fma4-no}"
6831     echo "i686 features enabled     ${i686-no}"
6832     echo "CMOV is fast              ${fast_cmov-no}"
6833     echo "EBX available             ${ebx_available-no}"
6834     echo "EBP available             ${ebp_available-no}"
6835 fi
6836 if enabled aarch64; then
6837     echo "NEON enabled              ${neon-no}"
6838     echo "VFP enabled               ${vfp-no}"
6839 fi
6840 if enabled arm; then
6841     echo "ARMv5TE enabled           ${armv5te-no}"
6842     echo "ARMv6 enabled             ${armv6-no}"
6843     echo "ARMv6T2 enabled           ${armv6t2-no}"
6844     echo "VFP enabled               ${vfp-no}"
6845     echo "NEON enabled              ${neon-no}"
6846     echo "THUMB enabled             ${thumb-no}"
6847 fi
6848 if enabled mips; then
6849     echo "MIPS FPU enabled          ${mipsfpu-no}"
6850     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6851     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6852     echo "MIPS MSA enabled          ${msa-no}"
6853     echo "LOONGSON MMI enabled      ${mmi-no}"
6854 fi
6855 if enabled ppc; then
6856     echo "AltiVec enabled           ${altivec-no}"
6857     echo "VSX enabled               ${vsx-no}"
6858     echo "POWER8 enabled            ${power8-no}"
6859     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6860     echo "dcbzl available           ${dcbzl-no}"
6861 fi
6862 echo "debug symbols             ${debug-no}"
6863 echo "strip symbols             ${stripping-no}"
6864 echo "optimize for size         ${small-no}"
6865 echo "optimizations             ${optimizations-no}"
6866 echo "static                    ${static-no}"
6867 echo "shared                    ${shared-no}"
6868 echo "postprocessing support    ${postproc-no}"
6869 echo "network support           ${network-no}"
6870 echo "threading support         ${thread_type-no}"
6871 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6872 echo "texi2html enabled         ${texi2html-no}"
6873 echo "perl enabled              ${perl-no}"
6874 echo "pod2man enabled           ${pod2man-no}"
6875 echo "makeinfo enabled          ${makeinfo-no}"
6876 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6877 test -n "$random_seed" &&
6878     echo "random seed               ${random_seed}"
6879 echo
6880
6881 echo "External libraries:"
6882 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6883 echo
6884
6885 echo "External libraries providing hardware acceleration:"
6886 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6887 echo
6888
6889 echo "Libraries:"
6890 print_enabled '' $LIBRARY_LIST | print_in_columns
6891 echo
6892
6893 echo "Programs:"
6894 print_enabled '' $PROGRAM_LIST | print_in_columns
6895 echo
6896
6897 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6898     echo "Enabled ${type}s:"
6899     eval list=\$$(toupper $type)_LIST
6900     print_enabled '_*' $list | print_in_columns
6901     echo
6902 done
6903
6904 if test -n "$ignore_tests"; then
6905     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6906     echo "Ignored FATE tests:"
6907     echo $ignore_tests | print_in_columns
6908     echo
6909 fi
6910
6911 echo "License: $license"
6912
6913 fi # test "$quiet" != "yes"
6914
6915 if test -n "$WARNINGS"; then
6916     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6917     enabled fatal_warnings && exit 1
6918 fi
6919
6920 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6921
6922 esc(){
6923     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6924 }
6925
6926 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6927
6928 enabled stripping || strip="echo skipping strip"
6929 enabled stripping || striptype=""
6930
6931 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6932
6933 cat > ffbuild/config.mak <<EOF
6934 # Automatically generated by configure - do not modify!
6935 ifndef FFMPEG_CONFIG_MAK
6936 FFMPEG_CONFIG_MAK=1
6937 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6938 prefix=$prefix
6939 LIBDIR=\$(DESTDIR)$libdir
6940 SHLIBDIR=\$(DESTDIR)$shlibdir
6941 INCDIR=\$(DESTDIR)$incdir
6942 BINDIR=\$(DESTDIR)$bindir
6943 DATADIR=\$(DESTDIR)$datadir
6944 DOCDIR=\$(DESTDIR)$docdir
6945 MANDIR=\$(DESTDIR)$mandir
6946 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6947 INSTALL_NAME_DIR=$install_name_dir
6948 SRC_PATH=$source_path
6949 SRC_LINK=$source_link
6950 ifndef MAIN_MAKEFILE
6951 SRC_PATH:=\$(SRC_PATH:.%=..%)
6952 endif
6953 CC_IDENT=$cc_ident
6954 ARCH=$arch
6955 INTRINSICS=$intrinsics
6956 EXTERN_PREFIX=$extern_prefix
6957 CC=$cc
6958 CXX=$cxx
6959 AS=$as
6960 OBJCC=$objcc
6961 LD=$ld
6962 DEPCC=$dep_cc
6963 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6964 DEPAS=$as
6965 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6966 X86ASM=$x86asmexe
6967 DEPX86ASM=$x86asmexe
6968 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6969 AR=$ar
6970 ARFLAGS=$arflags
6971 AR_O=$ar_o
6972 AR_CMD=$ar
6973 NM_CMD=$nm
6974 RANLIB=$ranlib
6975 STRIP=$strip
6976 STRIPTYPE=$striptype
6977 NVCC=$nvcc
6978 CP=cp -p
6979 LN_S=$ln_s
6980 CPPFLAGS=$CPPFLAGS
6981 CFLAGS=$CFLAGS
6982 CXXFLAGS=$CXXFLAGS
6983 OBJCFLAGS=$OBJCFLAGS
6984 ASFLAGS=$ASFLAGS
6985 NVCCFLAGS=$nvccflags
6986 AS_C=$AS_C
6987 AS_O=$AS_O
6988 OBJCC_C=$OBJCC_C
6989 OBJCC_E=$OBJCC_E
6990 OBJCC_O=$OBJCC_O
6991 CC_C=$CC_C
6992 CC_E=$CC_E
6993 CC_O=$CC_O
6994 CXX_C=$CXX_C
6995 CXX_O=$CXX_O
6996 NVCC_C=$NVCC_C
6997 NVCC_O=$NVCC_O
6998 LD_O=$LD_O
6999 X86ASM_O=$X86ASM_O
7000 LD_LIB=$LD_LIB
7001 LD_PATH=$LD_PATH
7002 DLLTOOL=$dlltool
7003 WINDRES=$windres
7004 DEPWINDRES=$dep_cc
7005 DOXYGEN=$doxygen
7006 LDFLAGS=$LDFLAGS
7007 LDEXEFLAGS=$LDEXEFLAGS
7008 LDSOFLAGS=$LDSOFLAGS
7009 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7010 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7011 X86ASMFLAGS=$X86ASMFLAGS
7012 BUILDSUF=$build_suffix
7013 PROGSSUF=$progs_suffix
7014 FULLNAME=$FULLNAME
7015 LIBPREF=$LIBPREF
7016 LIBSUF=$LIBSUF
7017 LIBNAME=$LIBNAME
7018 SLIBPREF=$SLIBPREF
7019 SLIBSUF=$SLIBSUF
7020 EXESUF=$EXESUF
7021 EXTRA_VERSION=$extra_version
7022 CCDEP=$CCDEP
7023 CXXDEP=$CXXDEP
7024 CCDEP_FLAGS=$CCDEP_FLAGS
7025 ASDEP=$ASDEP
7026 ASDEP_FLAGS=$ASDEP_FLAGS
7027 X86ASMDEP=$X86ASMDEP
7028 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7029 CC_DEPFLAGS=$CC_DEPFLAGS
7030 AS_DEPFLAGS=$AS_DEPFLAGS
7031 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7032 HOSTCC=$host_cc
7033 HOSTLD=$host_ld
7034 HOSTCFLAGS=$host_cflags
7035 HOSTCPPFLAGS=$host_cppflags
7036 HOSTEXESUF=$HOSTEXESUF
7037 HOSTLDFLAGS=$host_ldflags
7038 HOSTEXTRALIBS=$host_extralibs
7039 DEPHOSTCC=$host_cc
7040 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7041 HOSTCCDEP=$HOSTCCDEP
7042 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7043 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7044 HOSTCC_C=$HOSTCC_C
7045 HOSTCC_O=$HOSTCC_O
7046 HOSTLD_O=$HOSTLD_O
7047 TARGET_EXEC=$target_exec $target_exec_args
7048 TARGET_PATH=$target_path
7049 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7050 CFLAGS-ffplay=${sdl2_cflags}
7051 CFLAGS_HEADERS=$CFLAGS_HEADERS
7052 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7053 EXTRALIBS=$extralibs
7054 COMPAT_OBJS=$compat_objs
7055 INSTALL=$install
7056 LIBTARGET=${LIBTARGET}
7057 SLIBNAME=${SLIBNAME}
7058 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7059 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7060 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7061 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7062 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7063 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7064 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7065 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7066 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7067 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7068 NOREDZONE_FLAGS=$noredzone_flags
7069 LIBFUZZER_PATH=$libfuzzer_path
7070 IGNORE_TESTS=$ignore_tests
7071 EOF
7072
7073 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7074
7075 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7076     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7077 done
7078
7079 cat > $TMPH <<EOF
7080 /* Automatically generated by configure - do not modify! */
7081 #ifndef FFMPEG_CONFIG_H
7082 #define FFMPEG_CONFIG_H
7083 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7084 #define FFMPEG_LICENSE "$(c_escape $license)"
7085 #define CONFIG_THIS_YEAR 2018
7086 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7087 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7088 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7089 #define av_restrict $restrict_keyword
7090 #define EXTERN_PREFIX "${extern_prefix}"
7091 #define EXTERN_ASM ${extern_prefix}
7092 #define BUILDSUF "$build_suffix"
7093 #define SLIBSUF "$SLIBSUF"
7094 #define HAVE_MMX2 HAVE_MMXEXT
7095 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7096 EOF
7097
7098 test -n "$assert_level" &&
7099     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7100
7101 test -n "$malloc_prefix" &&
7102     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7103
7104 if enabled x86asm; then
7105     append config_files $TMPASM
7106     cat > $TMPASM <<EOF
7107 ; Automatically generated by configure - do not modify!
7108 EOF
7109 fi
7110
7111 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7112
7113
7114 mkdir -p doc
7115 mkdir -p tests
7116 mkdir -p tests/api
7117 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7118
7119 print_config ARCH_   "$config_files" $ARCH_LIST
7120 print_config HAVE_   "$config_files" $HAVE_LIST
7121 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7122                                      $CONFIG_EXTRA      \
7123                                      $ALL_COMPONENTS    \
7124
7125 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7126 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7127
7128 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7129 cp_if_changed $TMPH config.h
7130 touch ffbuild/.config
7131
7132 enabled x86asm && cp_if_changed $TMPASM config.asm
7133
7134 cat > $TMPH <<EOF
7135 /* Generated by ffmpeg configure */
7136 #ifndef AVUTIL_AVCONFIG_H
7137 #define AVUTIL_AVCONFIG_H
7138 EOF
7139
7140 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7141
7142 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7143
7144 cp_if_changed $TMPH libavutil/avconfig.h
7145
7146 # generate the lists of enabled components
7147 print_enabled_components(){
7148     file=$1
7149     struct_name=$2
7150     name=$3
7151     shift 3
7152     echo "static const $struct_name * const $name[] = {" > $TMPH
7153     for c in $*; do
7154         if enabled $c; then
7155             case $name in
7156                 indev_list)
7157                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7158                 ;;
7159                 outdev_list)
7160                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7161                 ;;
7162             esac
7163             printf "    &ff_%s,\n" $c >> $TMPH
7164         fi
7165     done
7166     echo "    NULL };" >> $TMPH
7167     cp_if_changed $TMPH $file
7168 }
7169
7170 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7171 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7172 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7173 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7174 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7175 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7176 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7177 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7178
7179 # Settings for pkg-config files
7180
7181 cat > $TMPH <<EOF
7182 # Automatically generated by configure - do not modify!
7183 shared=$shared
7184 build_suffix=$build_suffix
7185 prefix=$prefix
7186 libdir=$libdir
7187 incdir=$incdir
7188 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7189 source_path=${source_path}
7190 LIBPREF=${LIBPREF}
7191 LIBSUF=${LIBSUF}
7192 extralibs_avutil="$avutil_extralibs"
7193 extralibs_avcodec="$avcodec_extralibs"
7194 extralibs_avformat="$avformat_extralibs"
7195 extralibs_avdevice="$avdevice_extralibs"
7196 extralibs_avfilter="$avfilter_extralibs"
7197 extralibs_avresample="$avresample_extralibs"
7198 extralibs_postproc="$postproc_extralibs"
7199 extralibs_swscale="$swscale_extralibs"
7200 extralibs_swresample="$swresample_extralibs"
7201 EOF
7202
7203 for lib in $LIBRARY_LIST; do
7204     lib_deps="$(eval echo \$${lib}_deps)"
7205     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7206 done
7207
7208 cp_if_changed $TMPH ffbuild/config.sh