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 x86asm_o(){
 976     eval printf '%s\\n' $X86ASM_O
 977 }
 978
 979 test_x86asm(){
 980     log test_x86asm "$@"
 981     echo "$1" > $TMPASM
 982     log_file $TMPASM
 983     shift
 984     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
 985 }
 986
 987 check_cmd(){
 988     log check_cmd "$@"
 989     cmd=$1
 990     disabled $cmd && return
 991     disable $cmd
 992     test_cmd $@ && enable $cmd
 993 }
 994
 995 check_as(){
 996     log check_as "$@"
 997     name=$1
 998     code=$2
 999     shift 2
1000     disable $name
1001     test_as $@ <<EOF && enable $name
1002 $code
1003 EOF
1004 }
1005
1006 check_inline_asm(){
1007     log check_inline_asm "$@"
1008     name="$1"
1009     code="$2"
1010     shift 2
1011     disable $name
1012     test_cc "$@" <<EOF && enable $name
1013 void foo(void){ __asm__ volatile($code); }
1014 EOF
1015 }
1016
1017 check_inline_asm_flags(){
1018     log check_inline_asm_flags "$@"
1019     name="$1"
1020     code="$2"
1021     flags=''
1022     shift 2
1023     while [ "$1" != "" ]; do
1024       append flags $1
1025       shift
1026     done;
1027     disable $name
1028     cat > $TMPC <<EOF
1029 void foo(void){ __asm__ volatile($code); }
1030 EOF
1031     log_file $TMPC
1032     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1033     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1034 }
1035
1036 check_insn(){
1037     log check_insn "$@"
1038     check_inline_asm ${1}_inline "$2"
1039     check_as ${1}_external "$2"
1040 }
1041
1042 check_x86asm(){
1043     log check_x86asm "$@"
1044     name=$1
1045     shift
1046     disable $name
1047     test_x86asm "$@" && enable $name
1048 }
1049
1050 ld_o(){
1051     eval printf '%s\\n' $LD_O
1052 }
1053
1054 test_ld(){
1055     log test_ld "$@"
1056     type=$1
1057     shift 1
1058     flags=$(filter_out '-l*|*.so' $@)
1059     libs=$(filter '-l*|*.so' $@)
1060     test_$type $($cflags_filter $flags) || return
1061     flags=$($ldflags_filter $flags)
1062     libs=$($ldflags_filter $libs)
1063     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1064 }
1065
1066 check_ld(){
1067     log check_ld "$@"
1068     type=$1
1069     name=$2
1070     shift 2
1071     disable $name
1072     test_ld $type $@ && enable $name
1073 }
1074
1075 print_include(){
1076     hdr=$1
1077     test "${hdr%.h}" = "${hdr}" &&
1078         echo "#include $hdr"    ||
1079         echo "#include <$hdr>"
1080 }
1081
1082 test_code(){
1083     log test_code "$@"
1084     check=$1
1085     headers=$2
1086     code=$3
1087     shift 3
1088     {
1089         for hdr in $headers; do
1090             print_include $hdr
1091         done
1092         echo "int main(void) { $code; return 0; }"
1093     } | test_$check "$@"
1094 }
1095
1096 check_cppflags(){
1097     log check_cppflags "$@"
1098     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1099 #include <stdlib.h>
1100 EOF
1101 }
1102
1103 test_cflags(){
1104     log test_cflags "$@"
1105     set -- $($cflags_filter "$@")
1106     test_cc "$@" <<EOF
1107 int x;
1108 EOF
1109 }
1110
1111 check_cflags(){
1112     log check_cflags "$@"
1113     test_cflags "$@" && add_cflags "$@"
1114 }
1115
1116 check_cxxflags(){
1117     log check_cxxflags "$@"
1118     set -- $($cflags_filter "$@")
1119     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1120 int x;
1121 EOF
1122 }
1123
1124 test_objcflags(){
1125     log test_objcflags "$@"
1126     set -- $($objcflags_filter "$@")
1127     test_objcc "$@" <<EOF
1128 int x;
1129 EOF
1130 }
1131
1132 check_objcflags(){
1133     log check_objcflags "$@"
1134     test_objcflags "$@" && add_objcflags "$@"
1135 }
1136
1137 test_ldflags(){
1138     log test_ldflags "$@"
1139     set -- $($ldflags_filter "$@")
1140     test_ld "cc" "$@" <<EOF
1141 int main(void){ return 0; }
1142 EOF
1143 }
1144
1145 check_ldflags(){
1146     log check_ldflags "$@"
1147     test_ldflags "$@" && add_ldflags "$@"
1148 }
1149
1150 test_stripflags(){
1151     log test_stripflags "$@"
1152     # call test_cc to get a fresh TMPO
1153     test_cc <<EOF
1154 int main(void) { return 0; }
1155 EOF
1156     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1157 }
1158
1159 check_stripflags(){
1160     log check_stripflags "$@"
1161     test_stripflags "$@" && add_stripflags "$@"
1162 }
1163
1164 check_header(){
1165     log check_header "$@"
1166     headers=$1
1167     shift
1168     disable_sanitized $headers
1169     {
1170         for hdr in $headers; do
1171             print_include $hdr
1172         done
1173         echo "int x;"
1174     } | test_cpp "$@" && enable_sanitized $headers
1175 }
1176
1177 check_header_objcc(){
1178     log check_header_objcc "$@"
1179     rm -f -- "$TMPO"
1180     header=$1
1181     shift
1182     disable_sanitized $header
1183     {
1184        echo "#include <$header>"
1185        echo "int main(void) { return 0; }"
1186     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1187 }
1188
1189 check_apple_framework(){
1190     log check_apple_framework "$@"
1191     framework="$1"
1192     name="$(tolower $framework)"
1193     header="${framework}/${framework}.h"
1194     disable $name
1195     check_header_objcc $header &&
1196         enable $name && eval ${name}_extralibs='"-framework $framework"'
1197 }
1198
1199 check_func(){
1200     log check_func "$@"
1201     func=$1
1202     shift
1203     disable $func
1204     test_ld "cc" "$@" <<EOF && enable $func
1205 extern int $func();
1206 int main(void){ $func(); }
1207 EOF
1208 }
1209
1210 check_complexfunc(){
1211     log check_complexfunc "$@"
1212     func=$1
1213     narg=$2
1214     shift 2
1215     test $narg = 2 && args="f, g" || args="f * I"
1216     disable $func
1217     test_ld "cc" "$@" <<EOF && enable $func
1218 #include <complex.h>
1219 #include <math.h>
1220 float foo(complex float f, complex float g) { return $func($args); }
1221 int main(void){ return (int) foo; }
1222 EOF
1223 }
1224
1225 check_mathfunc(){
1226     log check_mathfunc "$@"
1227     func=$1
1228     narg=$2
1229     shift 2
1230     test $narg = 2 && args="f, g" || args="f"
1231     disable $func
1232     test_ld "cc" "$@" <<EOF && enable $func
1233 #include <math.h>
1234 float foo(float f, float g) { return $func($args); }
1235 int main(void){ return (int) foo; }
1236 EOF
1237 }
1238
1239 check_func_headers(){
1240     log check_func_headers "$@"
1241     headers=$1
1242     funcs=$2
1243     shift 2
1244     {
1245         for hdr in $headers; do
1246             print_include $hdr
1247         done
1248         echo "#include <stdint.h>"
1249         for func in $funcs; do
1250             echo "long check_$func(void) { return (long) $func; }"
1251         done
1252         echo "int main(void) { int ret = 0;"
1253         # LTO could optimize out the test functions without this
1254         for func in $funcs; do
1255             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1256         done
1257         echo "return ret; }"
1258     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1259 }
1260
1261 check_class_headers_cpp(){
1262     log check_class_headers_cpp "$@"
1263     headers=$1
1264     classes=$2
1265     shift 2
1266     {
1267         for hdr in $headers; do
1268             echo "#include <$hdr>"
1269         done
1270         echo "int main(void) { "
1271         i=1
1272         for class in $classes; do
1273             echo "$class obj$i;"
1274             i=$(expr $i + 1)
1275         done
1276         echo "return 0; }"
1277     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1278 }
1279
1280 test_cpp_condition(){
1281     log test_cpp_condition "$@"
1282     header=$1
1283     condition=$2
1284     shift 2
1285     test_cpp "$@" <<EOF
1286 #include <$header>
1287 #if !($condition)
1288 #error "unsatisfied condition: $condition"
1289 #endif
1290 EOF
1291 }
1292
1293 check_cpp_condition(){
1294     log check_cpp_condition "$@"
1295     name=$1
1296     shift 1
1297     disable $name
1298     test_cpp_condition "$@" && enable $name
1299 }
1300
1301 test_cflags_cc(){
1302     log test_cflags_cc "$@"
1303     flags=$1
1304     header=$2
1305     condition=$3
1306     shift 3
1307     set -- $($cflags_filter "$flags")
1308     test_cc "$@" <<EOF
1309 #include <$header>
1310 #if !($condition)
1311 #error "unsatisfied condition: $condition"
1312 #endif
1313 EOF
1314 }
1315
1316 check_lib(){
1317     log check_lib "$@"
1318     name="$1"
1319     headers="$2"
1320     funcs="$3"
1321     shift 3
1322     disable $name
1323     check_func_headers "$headers" "$funcs" "$@" &&
1324         enable $name && eval ${name}_extralibs="\$@"
1325 }
1326
1327 check_lib_cpp(){
1328     log check_lib_cpp "$@"
1329     name="$1"
1330     headers="$2"
1331     classes="$3"
1332     shift 3
1333     disable $name
1334     check_class_headers_cpp "$headers" "$classes" "$@" &&
1335         enable $name && eval ${name}_extralibs="\$@"
1336 }
1337
1338 test_pkg_config(){
1339     log test_pkg_config "$@"
1340     name="$1"
1341     pkg_version="$2"
1342     pkg="${2%% *}"
1343     headers="$3"
1344     funcs="$4"
1345     shift 4
1346     disable $name
1347     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1348     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1349     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1350     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1351         enable $name &&
1352         set_sanitized "${name}_cflags"    $pkg_cflags &&
1353         set_sanitized "${name}_extralibs" $pkg_libs
1354 }
1355
1356 check_pkg_config(){
1357     log check_pkg_config "$@"
1358     name="$1"
1359     test_pkg_config "$@" &&
1360         eval add_cflags \$${name}_cflags
1361 }
1362
1363 test_exec(){
1364     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1365 }
1366
1367 check_exec_crash(){
1368     log check_exec_crash "$@"
1369     code=$(cat)
1370
1371     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1372     # are safe but may not be available everywhere.  Thus we use
1373     # raise(SIGTERM) instead.  The check is run in a subshell so we
1374     # can redirect the "Terminated" message from the shell.  SIGBUS
1375     # is not defined by standard C so it is used conditionally.
1376
1377     (test_exec "$@") >> $logfile 2>&1 <<EOF
1378 #include <signal.h>
1379 static void sighandler(int sig){
1380     raise(SIGTERM);
1381 }
1382 int foo(void){
1383     $code
1384 }
1385 int (*func_ptr)(void) = foo;
1386 int main(void){
1387     signal(SIGILL, sighandler);
1388     signal(SIGFPE, sighandler);
1389     signal(SIGSEGV, sighandler);
1390 #ifdef SIGBUS
1391     signal(SIGBUS, sighandler);
1392 #endif
1393     return func_ptr();
1394 }
1395 EOF
1396 }
1397
1398 check_type(){
1399     log check_type "$@"
1400     headers=$1
1401     type=$2
1402     shift 2
1403     disable_sanitized "$type"
1404     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1405 }
1406
1407 check_struct(){
1408     log check_struct "$@"
1409     headers=$1
1410     struct=$2
1411     member=$3
1412     shift 3
1413     disable_sanitized "${struct}_${member}"
1414     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1415         enable_sanitized "${struct}_${member}"
1416 }
1417
1418 check_builtin(){
1419     log check_builtin "$@"
1420     name=$1
1421     headers=$2
1422     builtin=$3
1423     shift 3
1424     disable "$name"
1425     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1426 }
1427
1428 check_compile_assert(){
1429     log check_compile_assert "$@"
1430     name=$1
1431     headers=$2
1432     condition=$3
1433     shift 3
1434     disable "$name"
1435     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1436 }
1437
1438 check_cc(){
1439     log check_cc "$@"
1440     name=$1
1441     shift
1442     disable "$name"
1443     test_code cc "$@" && enable "$name"
1444 }
1445
1446 require(){
1447     log require "$@"
1448     name_version="$1"
1449     name="${1%% *}"
1450     shift
1451     check_lib $name "$@" || die "ERROR: $name_version not found"
1452 }
1453
1454 require_cc(){
1455     log require_cc "$@"
1456     name="$1"
1457     shift
1458     test_code cc "$@" || die "ERROR: $name failed"
1459 }
1460
1461 require_cpp(){
1462     name="$1"
1463     headers="$2"
1464     classes="$3"
1465     shift 3
1466     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1467 }
1468
1469 require_header(){
1470     log require_header "$@"
1471     headers="$1"
1472     check_header "$@" || die "ERROR: $headers not found"
1473 }
1474
1475 require_cpp_condition(){
1476     log require_cpp_condition "$@"
1477     condition="$2"
1478     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1479 }
1480
1481 require_pkg_config(){
1482     log require_pkg_config "$@"
1483     pkg_version="$2"
1484     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1485 }
1486
1487 hostcc_e(){
1488     eval printf '%s\\n' $HOSTCC_E
1489 }
1490
1491 hostcc_o(){
1492     eval printf '%s\\n' $HOSTCC_O
1493 }
1494
1495 test_host_cc(){
1496     log test_host_cc "$@"
1497     cat > $TMPC
1498     log_file $TMPC
1499     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1500 }
1501
1502 test_host_cpp(){
1503     log test_host_cpp "$@"
1504     cat > $TMPC
1505     log_file $TMPC
1506     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1507 }
1508
1509 check_host_cppflags(){
1510     log check_host_cppflags "$@"
1511     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1512 #include <stdlib.h>
1513 EOF
1514 }
1515
1516 check_host_cflags(){
1517     log check_host_cflags "$@"
1518     set -- $($host_cflags_filter "$@")
1519     test_host_cc "$@" <<EOF && append host_cflags "$@"
1520 int x;
1521 EOF
1522 }
1523
1524 test_host_cpp_condition(){
1525     log test_host_cpp_condition "$@"
1526     header=$1
1527     condition=$2
1528     shift 2
1529     test_host_cpp "$@" <<EOF
1530 #include <$header>
1531 #if !($condition)
1532 #error "unsatisfied condition: $condition"
1533 #endif
1534 EOF
1535 }
1536
1537 check_host_cpp_condition(){
1538     log check_host_cpp_condition "$@"
1539     name=$1
1540     shift 1
1541     disable $name
1542     test_host_cpp_condition "$@" && enable $name
1543 }
1544
1545 cp_if_changed(){
1546     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1547     mkdir -p "$(dirname $2)"
1548     cp -f "$1" "$2"
1549 }
1550
1551 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1552 # system-dependent things.
1553
1554 AVCODEC_COMPONENTS="
1555     bsfs
1556     decoders
1557     encoders
1558     hwaccels
1559     parsers
1560 "
1561
1562 AVDEVICE_COMPONENTS="
1563     indevs
1564     outdevs
1565 "
1566
1567 AVFILTER_COMPONENTS="
1568     filters
1569 "
1570
1571 AVFORMAT_COMPONENTS="
1572     demuxers
1573     muxers
1574     protocols
1575 "
1576
1577 COMPONENT_LIST="
1578     $AVCODEC_COMPONENTS
1579     $AVDEVICE_COMPONENTS
1580     $AVFILTER_COMPONENTS
1581     $AVFORMAT_COMPONENTS
1582 "
1583
1584 EXAMPLE_LIST="
1585     avio_dir_cmd_example
1586     avio_reading_example
1587     decode_audio_example
1588     decode_video_example
1589     demuxing_decoding_example
1590     encode_audio_example
1591     encode_video_example
1592     extract_mvs_example
1593     filter_audio_example
1594     filtering_audio_example
1595     filtering_video_example
1596     http_multiclient_example
1597     hw_decode_example
1598     metadata_example
1599     muxing_example
1600     qsvdec_example
1601     remuxing_example
1602     resampling_audio_example
1603     scaling_video_example
1604     transcode_aac_example
1605     transcoding_example
1606     vaapi_encode_example
1607     vaapi_transcode_example
1608 "
1609
1610 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1611     alsa
1612     appkit
1613     avfoundation
1614     bzlib
1615     coreimage
1616     iconv
1617     libxcb
1618     libxcb_shm
1619     libxcb_shape
1620     libxcb_xfixes
1621     lzma
1622     schannel
1623     sdl2
1624     securetransport
1625     sndio
1626     xlib
1627     zlib
1628 "
1629
1630 EXTERNAL_LIBRARY_GPL_LIST="
1631     avisynth
1632     frei0r
1633     libcdio
1634     librubberband
1635     libvidstab
1636     libx264
1637     libx265
1638     libxavs
1639     libxvid
1640 "
1641
1642 EXTERNAL_LIBRARY_NONFREE_LIST="
1643     decklink
1644     libndi_newtek
1645     libfdk_aac
1646     openssl
1647     libtls
1648 "
1649
1650 EXTERNAL_LIBRARY_VERSION3_LIST="
1651     gmp
1652     libopencore_amrnb
1653     libopencore_amrwb
1654     libvmaf
1655     libvo_amrwbenc
1656     rkmpp
1657 "
1658
1659 EXTERNAL_LIBRARY_GPLV3_LIST="
1660     libsmbclient
1661 "
1662
1663 EXTERNAL_LIBRARY_LIST="
1664     $EXTERNAL_LIBRARY_GPL_LIST
1665     $EXTERNAL_LIBRARY_NONFREE_LIST
1666     $EXTERNAL_LIBRARY_VERSION3_LIST
1667     $EXTERNAL_LIBRARY_GPLV3_LIST
1668     chromaprint
1669     gcrypt
1670     gnutls
1671     jni
1672     ladspa
1673     libaom
1674     libass
1675     libbluray
1676     libbs2b
1677     libcaca
1678     libcelt
1679     libcodec2
1680     libdc1394
1681     libdrm
1682     libflite
1683     libfontconfig
1684     libfreetype
1685     libfribidi
1686     libgme
1687     libgsm
1688     libiec61883
1689     libilbc
1690     libjack
1691     libkvazaar
1692     libmodplug
1693     libmp3lame
1694     libmysofa
1695     libopencv
1696     libopenh264
1697     libopenjpeg
1698     libopenmpt
1699     libopus
1700     libpulse
1701     librsvg
1702     librtmp
1703     libshine
1704     libsmbclient
1705     libsnappy
1706     libsoxr
1707     libspeex
1708     libssh
1709     libtesseract
1710     libtheora
1711     libtwolame
1712     libv4l2
1713     libvorbis
1714     libvpx
1715     libwavpack
1716     libwebp
1717     libxml2
1718     libzimg
1719     libzmq
1720     libzvbi
1721     lv2
1722     mediacodec
1723     openal
1724     opengl
1725 "
1726
1727 HWACCEL_AUTODETECT_LIBRARY_LIST="
1728     amf
1729     audiotoolbox
1730     crystalhd
1731     cuda
1732     cuvid
1733     d3d11va
1734     dxva2
1735     ffnvcodec
1736     nvdec
1737     nvenc
1738     vaapi
1739     vdpau
1740     videotoolbox
1741     v4l2_m2m
1742     xvmc
1743 "
1744
1745 # catchall list of things that require external libs to link
1746 EXTRALIBS_LIST="
1747     cpu_init
1748     cws2fws
1749 "
1750
1751 HWACCEL_LIBRARY_NONFREE_LIST="
1752     cuda_sdk
1753     libnpp
1754 "
1755
1756 HWACCEL_LIBRARY_LIST="
1757     $HWACCEL_LIBRARY_NONFREE_LIST
1758     libmfx
1759     mmal
1760     omx
1761     opencl
1762 "
1763
1764 DOCUMENT_LIST="
1765     doc
1766     htmlpages
1767     manpages
1768     podpages
1769     txtpages
1770 "
1771
1772 FEATURE_LIST="
1773     ftrapv
1774     gray
1775     hardcoded_tables
1776     omx_rpi
1777     runtime_cpudetect
1778     safe_bitstream_reader
1779     shared
1780     small
1781     static
1782     swscale_alpha
1783 "
1784
1785 LIBRARY_LIST="
1786     avcodec
1787     avdevice
1788     avfilter
1789     avformat
1790     avresample
1791     avutil
1792     postproc
1793     swresample
1794     swscale
1795 "
1796
1797 LICENSE_LIST="
1798     gpl
1799     nonfree
1800     version3
1801 "
1802
1803 PROGRAM_LIST="
1804     ffplay
1805     ffprobe
1806     ffmpeg
1807 "
1808
1809 SUBSYSTEM_LIST="
1810     dct
1811     dwt
1812     error_resilience
1813     faan
1814     fast_unaligned
1815     fft
1816     lsp
1817     lzo
1818     mdct
1819     pixelutils
1820     network
1821     rdft
1822 "
1823
1824 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1825 CONFIG_LIST="
1826     $DOCUMENT_LIST
1827     $EXAMPLE_LIST
1828     $EXTERNAL_LIBRARY_LIST
1829     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1830     $HWACCEL_LIBRARY_LIST
1831     $HWACCEL_AUTODETECT_LIBRARY_LIST
1832     $FEATURE_LIST
1833     $LICENSE_LIST
1834     $LIBRARY_LIST
1835     $PROGRAM_LIST
1836     $SUBSYSTEM_LIST
1837     autodetect
1838     fontconfig
1839     linux_perf
1840     memory_poisoning
1841     neon_clobber_test
1842     ossfuzz
1843     pic
1844     thumb
1845     valgrind_backtrace
1846     xmm_clobber_test
1847     $COMPONENT_LIST
1848 "
1849
1850 THREADS_LIST="
1851     pthreads
1852     os2threads
1853     w32threads
1854 "
1855
1856 ATOMICS_LIST="
1857     atomics_gcc
1858     atomics_suncc
1859     atomics_win32
1860 "
1861
1862 AUTODETECT_LIBS="
1863     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1864     $HWACCEL_AUTODETECT_LIBRARY_LIST
1865     $THREADS_LIST
1866 "
1867
1868 ARCH_LIST="
1869     aarch64
1870     alpha
1871     arm
1872     avr32
1873     avr32_ap
1874     avr32_uc
1875     bfin
1876     ia64
1877     m68k
1878     mips
1879     mips64
1880     parisc
1881     ppc
1882     ppc64
1883     s390
1884     sh4
1885     sparc
1886     sparc64
1887     tilegx
1888     tilepro
1889     tomi
1890     x86
1891     x86_32
1892     x86_64
1893 "
1894
1895 ARCH_EXT_LIST_ARM="
1896     armv5te
1897     armv6
1898     armv6t2
1899     armv8
1900     neon
1901     vfp
1902     vfpv3
1903     setend
1904 "
1905
1906 ARCH_EXT_LIST_MIPS="
1907     mipsfpu
1908     mips32r2
1909     mips32r5
1910     mips64r2
1911     mips32r6
1912     mips64r6
1913     mipsdsp
1914     mipsdspr2
1915     msa
1916 "
1917
1918 ARCH_EXT_LIST_LOONGSON="
1919     loongson2
1920     loongson3
1921     mmi
1922 "
1923
1924 ARCH_EXT_LIST_X86_SIMD="
1925     aesni
1926     amd3dnow
1927     amd3dnowext
1928     avx
1929     avx2
1930     avx512
1931     fma3
1932     fma4
1933     mmx
1934     mmxext
1935     sse
1936     sse2
1937     sse3
1938     sse4
1939     sse42
1940     ssse3
1941     xop
1942 "
1943
1944 ARCH_EXT_LIST_PPC="
1945     altivec
1946     dcbzl
1947     ldbrx
1948     power8
1949     ppc4xx
1950     vsx
1951 "
1952
1953 ARCH_EXT_LIST_X86="
1954     $ARCH_EXT_LIST_X86_SIMD
1955     cpunop
1956     i686
1957 "
1958
1959 ARCH_EXT_LIST="
1960     $ARCH_EXT_LIST_ARM
1961     $ARCH_EXT_LIST_PPC
1962     $ARCH_EXT_LIST_X86
1963     $ARCH_EXT_LIST_MIPS
1964     $ARCH_EXT_LIST_LOONGSON
1965 "
1966
1967 ARCH_FEATURES="
1968     aligned_stack
1969     fast_64bit
1970     fast_clz
1971     fast_cmov
1972     local_aligned
1973     simd_align_16
1974     simd_align_32
1975     simd_align_64
1976 "
1977
1978 BUILTIN_LIST="
1979     atomic_cas_ptr
1980     machine_rw_barrier
1981     MemoryBarrier
1982     mm_empty
1983     rdtsc
1984     sem_timedwait
1985     sync_val_compare_and_swap
1986 "
1987 HAVE_LIST_CMDLINE="
1988     inline_asm
1989     symver
1990     x86asm
1991 "
1992
1993 HAVE_LIST_PUB="
1994     bigendian
1995     fast_unaligned
1996 "
1997
1998 HEADERS_LIST="
1999     arpa_inet_h
2000     asm_types_h
2001     cdio_paranoia_h
2002     cdio_paranoia_paranoia_h
2003     cuda_h
2004     dispatch_dispatch_h
2005     dev_bktr_ioctl_bt848_h
2006     dev_bktr_ioctl_meteor_h
2007     dev_ic_bt8xx_h
2008     dev_video_bktr_ioctl_bt848_h
2009     dev_video_meteor_ioctl_meteor_h
2010     direct_h
2011     dirent_h
2012     dxgidebug_h
2013     dxva_h
2014     ES2_gl_h
2015     gsm_h
2016     io_h
2017     machine_ioctl_bt848_h
2018     machine_ioctl_meteor_h
2019     malloc_h
2020     opencv2_core_core_c_h
2021     OpenGL_gl3_h
2022     poll_h
2023     sys_param_h
2024     sys_resource_h
2025     sys_select_h
2026     sys_soundcard_h
2027     sys_time_h
2028     sys_un_h
2029     sys_videoio_h
2030     termios_h
2031     udplite_h
2032     unistd_h
2033     valgrind_valgrind_h
2034     windows_h
2035     winsock2_h
2036 "
2037
2038 INTRINSICS_LIST="
2039     intrinsics_neon
2040 "
2041
2042 COMPLEX_FUNCS="
2043     cabs
2044     cexp
2045 "
2046
2047 MATH_FUNCS="
2048     atanf
2049     atan2f
2050     cbrt
2051     cbrtf
2052     copysign
2053     cosf
2054     erf
2055     exp2
2056     exp2f
2057     expf
2058     hypot
2059     isfinite
2060     isinf
2061     isnan
2062     ldexpf
2063     llrint
2064     llrintf
2065     log2
2066     log2f
2067     log10f
2068     lrint
2069     lrintf
2070     powf
2071     rint
2072     round
2073     roundf
2074     sinf
2075     trunc
2076     truncf
2077 "
2078
2079 SYSTEM_FEATURES="
2080     dos_paths
2081     libc_msvcrt
2082     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2083     section_data_rel_ro
2084     threads
2085     uwp
2086     winrt
2087 "
2088
2089 SYSTEM_FUNCS="
2090     access
2091     aligned_malloc
2092     arc4random
2093     clock_gettime
2094     closesocket
2095     CommandLineToArgvW
2096     fcntl
2097     getaddrinfo
2098     gethrtime
2099     getopt
2100     GetProcessAffinityMask
2101     GetProcessMemoryInfo
2102     GetProcessTimes
2103     getrusage
2104     GetSystemTimeAsFileTime
2105     gettimeofday
2106     glob
2107     glXGetProcAddress
2108     gmtime_r
2109     inet_aton
2110     isatty
2111     kbhit
2112     localtime_r
2113     lstat
2114     lzo1x_999_compress
2115     mach_absolute_time
2116     MapViewOfFile
2117     memalign
2118     mkstemp
2119     mmap
2120     mprotect
2121     nanosleep
2122     PeekNamedPipe
2123     posix_memalign
2124     pthread_cancel
2125     sched_getaffinity
2126     SecItemImport
2127     SetConsoleTextAttribute
2128     SetConsoleCtrlHandler
2129     setmode
2130     setrlimit
2131     Sleep
2132     strerror_r
2133     sysconf
2134     sysctl
2135     usleep
2136     UTGetOSTypeFromString
2137     VirtualAlloc
2138     wglGetProcAddress
2139 "
2140
2141 SYSTEM_LIBRARIES="
2142     vaapi_drm
2143     vaapi_x11
2144     vdpau_x11
2145     wincrypt
2146 "
2147
2148 TOOLCHAIN_FEATURES="
2149     as_arch_directive
2150     as_fpu_directive
2151     as_func
2152     as_object_arch
2153     asm_mod_q
2154     blocks_extension
2155     ebp_available
2156     ebx_available
2157     gnu_as
2158     gnu_windres
2159     ibm_asm
2160     inline_asm_direct_symbol_refs
2161     inline_asm_labels
2162     inline_asm_nonlocal_labels
2163     pragma_deprecated
2164     rsync_contimeout
2165     symver_asm_label
2166     symver_gnu_asm
2167     vfp_args
2168     xform_asm
2169     xmm_clobbers
2170 "
2171
2172 TYPES_LIST="
2173     kCMVideoCodecType_HEVC
2174     socklen_t
2175     struct_addrinfo
2176     struct_group_source_req
2177     struct_ip_mreq_source
2178     struct_ipv6_mreq
2179     struct_msghdr_msg_flags
2180     struct_pollfd
2181     struct_rusage_ru_maxrss
2182     struct_sctp_event_subscribe
2183     struct_sockaddr_in6
2184     struct_sockaddr_sa_len
2185     struct_sockaddr_storage
2186     struct_stat_st_mtim_tv_nsec
2187     struct_v4l2_frmivalenum_discrete
2188 "
2189
2190 HAVE_LIST="
2191     $ARCH_EXT_LIST
2192     $(add_suffix _external $ARCH_EXT_LIST)
2193     $(add_suffix _inline   $ARCH_EXT_LIST)
2194     $ARCH_FEATURES
2195     $BUILTIN_LIST
2196     $COMPLEX_FUNCS
2197     $HAVE_LIST_CMDLINE
2198     $HAVE_LIST_PUB
2199     $HEADERS_LIST
2200     $INTRINSICS_LIST
2201     $MATH_FUNCS
2202     $SYSTEM_FEATURES
2203     $SYSTEM_FUNCS
2204     $SYSTEM_LIBRARIES
2205     $THREADS_LIST
2206     $TOOLCHAIN_FEATURES
2207     $TYPES_LIST
2208     makeinfo
2209     makeinfo_html
2210     opencl_d3d11
2211     opencl_drm_arm
2212     opencl_drm_beignet
2213     opencl_dxva2
2214     opencl_vaapi_beignet
2215     opencl_vaapi_intel_media
2216     perl
2217     pod2man
2218     texi2html
2219 "
2220
2221 # options emitted with CONFIG_ prefix but not available on the command line
2222 CONFIG_EXTRA="
2223     aandcttables
2224     ac3dsp
2225     adts_header
2226     audio_frame_queue
2227     audiodsp
2228     blockdsp
2229     bswapdsp
2230     cabac
2231     cbs
2232     cbs_h264
2233     cbs_h265
2234     cbs_mpeg2
2235     dirac_parse
2236     dvprofile
2237     exif
2238     faandct
2239     faanidct
2240     fdctdsp
2241     flacdsp
2242     fmtconvert
2243     frame_thread_encoder
2244     g722dsp
2245     golomb
2246     gplv3
2247     h263dsp
2248     h264chroma
2249     h264dsp
2250     h264parse
2251     h264pred
2252     h264qpel
2253     hevcparse
2254     hpeldsp
2255     huffman
2256     huffyuvdsp
2257     huffyuvencdsp
2258     idctdsp
2259     iirfilter
2260     mdct15
2261     intrax8
2262     iso_media
2263     ividsp
2264     jpegtables
2265     lgplv3
2266     libx262
2267     llauddsp
2268     llviddsp
2269     llvidencdsp
2270     lpc
2271     lzf
2272     me_cmp
2273     mpeg_er
2274     mpegaudio
2275     mpegaudiodsp
2276     mpegaudioheader
2277     mpegvideo
2278     mpegvideoenc
2279     mss34dsp
2280     pixblockdsp
2281     qpeldsp
2282     qsv
2283     qsvdec
2284     qsvenc
2285     qsvvpp
2286     rangecoder
2287     riffdec
2288     riffenc
2289     rtpdec
2290     rtpenc_chain
2291     rv34dsp
2292     sinewin
2293     snappy
2294     srtp
2295     startcode
2296     texturedsp
2297     texturedspenc
2298     tpeldsp
2299     vaapi_1
2300     vaapi_encode
2301     vc1dsp
2302     videodsp
2303     vp3dsp
2304     vp56dsp
2305     vp8dsp
2306     wma_freqs
2307     wmv2dsp
2308 "
2309
2310 CMDLINE_SELECT="
2311     $ARCH_EXT_LIST
2312     $CONFIG_LIST
2313     $HAVE_LIST_CMDLINE
2314     $THREADS_LIST
2315     asm
2316     cross_compile
2317     debug
2318     extra_warnings
2319     logging
2320     lto
2321     optimizations
2322     rpath
2323     stripping
2324 "
2325
2326 PATHS_LIST="
2327     bindir
2328     datadir
2329     docdir
2330     incdir
2331     libdir
2332     mandir
2333     pkgconfigdir
2334     prefix
2335     shlibdir
2336     install_name_dir
2337 "
2338
2339 CMDLINE_SET="
2340     $PATHS_LIST
2341     ar
2342     arch
2343     as
2344     assert_level
2345     build_suffix
2346     cc
2347     objcc
2348     cpu
2349     cross_prefix
2350     custom_allocator
2351     cxx
2352     dep_cc
2353     doxygen
2354     env
2355     extra_version
2356     gas
2357     host_cc
2358     host_cflags
2359     host_extralibs
2360     host_ld
2361     host_ldflags
2362     host_os
2363     ignore_tests
2364     install
2365     ld
2366     ln_s
2367     logfile
2368     malloc_prefix
2369     nm
2370     optflags
2371     nvccflags
2372     pkg_config
2373     pkg_config_flags
2374     progs_suffix
2375     random_seed
2376     ranlib
2377     samples
2378     strip
2379     sws_max_filter_size
2380     sysinclude
2381     sysroot
2382     target_exec
2383     target_os
2384     target_path
2385     target_samples
2386     tempprefix
2387     toolchain
2388     valgrind
2389     x86asmexe
2390 "
2391
2392 CMDLINE_APPEND="
2393     extra_cflags
2394     extra_cxxflags
2395     extra_objcflags
2396     host_cppflags
2397 "
2398
2399 # code dependency declarations
2400
2401 # architecture extensions
2402
2403 armv5te_deps="arm"
2404 armv6_deps="arm"
2405 armv6t2_deps="arm"
2406 armv8_deps="aarch64"
2407 neon_deps_any="aarch64 arm"
2408 intrinsics_neon_deps="neon"
2409 vfp_deps_any="aarch64 arm"
2410 vfpv3_deps="vfp"
2411 setend_deps="arm"
2412
2413 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2414
2415 altivec_deps="ppc"
2416 dcbzl_deps="ppc"
2417 ldbrx_deps="ppc"
2418 ppc4xx_deps="ppc"
2419 vsx_deps="altivec"
2420 power8_deps="vsx"
2421
2422 loongson2_deps="mips"
2423 loongson3_deps="mips"
2424 mips32r2_deps="mips"
2425 mips32r5_deps="mips"
2426 mips32r6_deps="mips"
2427 mips64r2_deps="mips"
2428 mips64r6_deps="mips"
2429 mipsfpu_deps="mips"
2430 mipsdsp_deps="mips"
2431 mipsdspr2_deps="mips"
2432 mmi_deps="mips"
2433 msa_deps="mipsfpu"
2434
2435 cpunop_deps="i686"
2436 x86_64_select="i686"
2437 x86_64_suggest="fast_cmov"
2438
2439 amd3dnow_deps="mmx"
2440 amd3dnowext_deps="amd3dnow"
2441 i686_deps="x86"
2442 mmx_deps="x86"
2443 mmxext_deps="mmx"
2444 sse_deps="mmxext"
2445 sse2_deps="sse"
2446 sse3_deps="sse2"
2447 ssse3_deps="sse3"
2448 sse4_deps="ssse3"
2449 sse42_deps="sse4"
2450 aesni_deps="sse42"
2451 avx_deps="sse42"
2452 xop_deps="avx"
2453 fma3_deps="avx"
2454 fma4_deps="avx"
2455 avx2_deps="avx"
2456 avx512_deps="avx2"
2457
2458 mmx_external_deps="x86asm"
2459 mmx_inline_deps="inline_asm x86"
2460 mmx_suggest="mmx_external mmx_inline"
2461
2462 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2463     eval dep=\$${ext}_deps
2464     eval ${ext}_external_deps='"${dep}_external"'
2465     eval ${ext}_inline_deps='"${dep}_inline"'
2466     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2467 done
2468
2469 aligned_stack_if_any="aarch64 ppc x86"
2470 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2471 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2472 fast_unaligned_if_any="aarch64 ppc x86"
2473 simd_align_16_if_any="altivec neon sse"
2474 simd_align_32_if_any="avx"
2475 simd_align_64_if_any="avx512"
2476
2477 # system capabilities
2478 symver_if_any="symver_asm_label symver_gnu_asm"
2479 valgrind_backtrace_conflict="optimizations"
2480 valgrind_backtrace_deps="valgrind_valgrind_h"
2481
2482 # threading support
2483 atomics_gcc_if="sync_val_compare_and_swap"
2484 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2485 atomics_win32_if="MemoryBarrier"
2486 atomics_native_if_any="$ATOMICS_LIST"
2487 w32threads_deps="atomics_native"
2488 threads_if_any="$THREADS_LIST"
2489
2490 # subsystems
2491 cbs_h264_select="cbs golomb"
2492 cbs_h265_select="cbs golomb"
2493 cbs_mpeg2_select="cbs"
2494 dct_select="rdft"
2495 dirac_parse_select="golomb"
2496 error_resilience_select="me_cmp"
2497 faandct_deps="faan"
2498 faandct_select="fdctdsp"
2499 faanidct_deps="faan"
2500 faanidct_select="idctdsp"
2501 h264dsp_select="startcode"
2502 hevcparse_select="golomb"
2503 frame_thread_encoder_deps="encoders threads"
2504 intrax8_select="blockdsp idctdsp"
2505 mdct_select="fft"
2506 mdct15_select="fft"
2507 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2508 mpeg_er_select="error_resilience"
2509 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2510 mpegaudiodsp_select="dct"
2511 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2512 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2513 vc1dsp_select="h264chroma qpeldsp startcode"
2514 rdft_select="fft"
2515
2516 # decoders / encoders
2517 aac_decoder_select="adts_header mdct15 mdct sinewin"
2518 aac_fixed_decoder_select="adts_header mdct sinewin"
2519 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2520 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2521 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2522 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2523 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2524 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2525 adpcm_g722_decoder_select="g722dsp"
2526 adpcm_g722_encoder_select="g722dsp"
2527 aic_decoder_select="golomb idctdsp"
2528 alac_encoder_select="lpc"
2529 als_decoder_select="bswapdsp"
2530 amrnb_decoder_select="lsp"
2531 amrwb_decoder_select="lsp"
2532 amv_decoder_select="sp5x_decoder exif"
2533 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2534 ape_decoder_select="bswapdsp llauddsp"
2535 apng_decoder_deps="zlib"
2536 apng_encoder_deps="zlib"
2537 apng_encoder_select="llvidencdsp"
2538 aptx_decoder_select="audio_frame_queue"
2539 aptx_encoder_select="audio_frame_queue"
2540 aptx_hd_decoder_select="audio_frame_queue"
2541 aptx_hd_encoder_select="audio_frame_queue"
2542 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2543 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2544 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2545 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2546 atrac1_decoder_select="mdct sinewin"
2547 atrac3_decoder_select="mdct"
2548 atrac3p_decoder_select="mdct sinewin"
2549 avrn_decoder_select="exif jpegtables"
2550 bink_decoder_select="blockdsp hpeldsp"
2551 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2552 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2553 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2554 clearvideo_decoder_select="idctdsp"
2555 cllc_decoder_select="bswapdsp"
2556 comfortnoise_encoder_select="lpc"
2557 cook_decoder_select="audiodsp mdct sinewin"
2558 cscd_decoder_select="lzo"
2559 cscd_decoder_suggest="zlib"
2560 dca_decoder_select="mdct"
2561 dds_decoder_select="texturedsp"
2562 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2563 dnxhd_decoder_select="blockdsp idctdsp"
2564 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2565 dolby_e_decoder_select="mdct"
2566 dvvideo_decoder_select="dvprofile idctdsp"
2567 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2568 dxa_decoder_deps="zlib"
2569 dxv_decoder_select="lzf texturedsp"
2570 eac3_decoder_select="ac3_decoder"
2571 eac3_encoder_select="ac3_encoder"
2572 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2573 eatgq_decoder_select="aandcttables"
2574 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2575 exr_decoder_deps="zlib"
2576 ffv1_decoder_select="rangecoder"
2577 ffv1_encoder_select="rangecoder"
2578 ffvhuff_decoder_select="huffyuv_decoder"
2579 ffvhuff_encoder_select="huffyuv_encoder"
2580 fic_decoder_select="golomb"
2581 flac_decoder_select="flacdsp"
2582 flac_encoder_select="bswapdsp flacdsp lpc"
2583 flashsv2_decoder_deps="zlib"
2584 flashsv2_encoder_deps="zlib"
2585 flashsv_decoder_deps="zlib"
2586 flashsv_encoder_deps="zlib"
2587 flv_decoder_select="h263_decoder"
2588 flv_encoder_select="h263_encoder"
2589 fourxm_decoder_select="blockdsp bswapdsp"
2590 fraps_decoder_select="bswapdsp huffman"
2591 g2m_decoder_deps="zlib"
2592 g2m_decoder_select="blockdsp idctdsp jpegtables"
2593 g729_decoder_select="audiodsp"
2594 h261_decoder_select="mpegvideo"
2595 h261_encoder_select="aandcttables mpegvideoenc"
2596 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2597 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2598 h263i_decoder_select="h263_decoder"
2599 h263p_decoder_select="h263_decoder"
2600 h263p_encoder_select="h263_encoder"
2601 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2602 h264_decoder_suggest="error_resilience"
2603 hap_decoder_select="snappy texturedsp"
2604 hap_encoder_deps="libsnappy"
2605 hap_encoder_select="texturedspenc"
2606 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2607 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2608 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2609 iac_decoder_select="imc_decoder"
2610 imc_decoder_select="bswapdsp fft mdct sinewin"
2611 indeo3_decoder_select="hpeldsp"
2612 indeo4_decoder_select="ividsp"
2613 indeo5_decoder_select="ividsp"
2614 interplay_video_decoder_select="hpeldsp"
2615 jpegls_decoder_select="mjpeg_decoder"
2616 jv_decoder_select="blockdsp"
2617 lagarith_decoder_select="llviddsp"
2618 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2619 magicyuv_decoder_select="llviddsp"
2620 magicyuv_encoder_select="llvidencdsp"
2621 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2622 metasound_decoder_select="lsp mdct sinewin"
2623 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2624 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2625 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2626 mjpegb_decoder_select="mjpeg_decoder"
2627 mlp_decoder_select="mlp_parser"
2628 mlp_encoder_select="lpc"
2629 motionpixels_decoder_select="bswapdsp"
2630 mp1_decoder_select="mpegaudio"
2631 mp1float_decoder_select="mpegaudio"
2632 mp2_decoder_select="mpegaudio"
2633 mp2float_decoder_select="mpegaudio"
2634 mp3_decoder_select="mpegaudio"
2635 mp3adu_decoder_select="mpegaudio"
2636 mp3adufloat_decoder_select="mpegaudio"
2637 mp3float_decoder_select="mpegaudio"
2638 mp3on4_decoder_select="mpegaudio"
2639 mp3on4float_decoder_select="mpegaudio"
2640 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2641 mpc8_decoder_select="mpegaudiodsp"
2642 mpegvideo_decoder_select="mpegvideo"
2643 mpeg1video_decoder_select="mpegvideo"
2644 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2645 mpeg2video_decoder_select="mpegvideo"
2646 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2647 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2648 mpeg4_encoder_select="h263_encoder"
2649 msa1_decoder_select="mss34dsp"
2650 mscc_decoder_deps="zlib"
2651 msmpeg4v1_decoder_select="h263_decoder"
2652 msmpeg4v2_decoder_select="h263_decoder"
2653 msmpeg4v2_encoder_select="h263_encoder"
2654 msmpeg4v3_decoder_select="h263_decoder"
2655 msmpeg4v3_encoder_select="h263_encoder"
2656 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2657 mts2_decoder_select="mss34dsp"
2658 mxpeg_decoder_select="mjpeg_decoder"
2659 nellymoser_decoder_select="mdct sinewin"
2660 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2661 nuv_decoder_select="idctdsp lzo"
2662 on2avc_decoder_select="mdct"
2663 opus_decoder_deps="swresample"
2664 opus_decoder_select="mdct15"
2665 opus_encoder_select="audio_frame_queue mdct15"
2666 png_decoder_deps="zlib"
2667 png_encoder_deps="zlib"
2668 png_encoder_select="llvidencdsp"
2669 prores_decoder_select="blockdsp idctdsp"
2670 prores_encoder_select="fdctdsp"
2671 qcelp_decoder_select="lsp"
2672 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2673 ra_144_decoder_select="audiodsp"
2674 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2675 ralf_decoder_select="golomb"
2676 rawvideo_decoder_select="bswapdsp"
2677 rscc_decoder_deps="zlib"
2678 rtjpeg_decoder_select="me_cmp"
2679 rv10_decoder_select="h263_decoder"
2680 rv10_encoder_select="h263_encoder"
2681 rv20_decoder_select="h263_decoder"
2682 rv20_encoder_select="h263_encoder"
2683 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2684 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2685 screenpresso_decoder_deps="zlib"
2686 shorten_decoder_select="bswapdsp"
2687 sipr_decoder_select="lsp"
2688 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2689 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2690 sonic_decoder_select="golomb rangecoder"
2691 sonic_encoder_select="golomb rangecoder"
2692 sonic_ls_encoder_select="golomb rangecoder"
2693 sp5x_decoder_select="mjpeg_decoder"
2694 srgc_decoder_deps="zlib"
2695 svq1_decoder_select="hpeldsp"
2696 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2697 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2698 svq3_decoder_suggest="zlib"
2699 tak_decoder_select="audiodsp"
2700 tdsc_decoder_deps="zlib"
2701 tdsc_decoder_select="mjpeg_decoder"
2702 theora_decoder_select="vp3_decoder"
2703 thp_decoder_select="mjpeg_decoder"
2704 tiff_decoder_suggest="zlib lzma"
2705 tiff_encoder_suggest="zlib"
2706 truehd_decoder_select="mlp_parser"
2707 truehd_encoder_select="lpc"
2708 truemotion2_decoder_select="bswapdsp"
2709 truespeech_decoder_select="bswapdsp"
2710 tscc_decoder_deps="zlib"
2711 twinvq_decoder_select="mdct lsp sinewin"
2712 txd_decoder_select="texturedsp"
2713 utvideo_decoder_select="bswapdsp llviddsp"
2714 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2715 vble_decoder_select="llviddsp"
2716 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2717 vc1image_decoder_select="vc1_decoder"
2718 vorbis_decoder_select="mdct"
2719 vorbis_encoder_select="audio_frame_queue mdct"
2720 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2721 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2722 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2723 vp6a_decoder_select="vp6_decoder"
2724 vp6f_decoder_select="vp6_decoder"
2725 vp7_decoder_select="h264pred videodsp vp8dsp"
2726 vp8_decoder_select="h264pred videodsp vp8dsp"
2727 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2728 webp_decoder_select="vp8_decoder exif"
2729 wmalossless_decoder_select="llauddsp"
2730 wmapro_decoder_select="mdct sinewin wma_freqs"
2731 wmav1_decoder_select="mdct sinewin wma_freqs"
2732 wmav1_encoder_select="mdct sinewin wma_freqs"
2733 wmav2_decoder_select="mdct sinewin wma_freqs"
2734 wmav2_encoder_select="mdct sinewin wma_freqs"
2735 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2736 wmv1_decoder_select="h263_decoder"
2737 wmv1_encoder_select="h263_encoder"
2738 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2739 wmv2_encoder_select="h263_encoder wmv2dsp"
2740 wmv3_decoder_select="vc1_decoder"
2741 wmv3image_decoder_select="wmv3_decoder"
2742 xma1_decoder_select="wmapro_decoder"
2743 xma2_decoder_select="wmapro_decoder"
2744 zerocodec_decoder_deps="zlib"
2745 zlib_decoder_deps="zlib"
2746 zlib_encoder_deps="zlib"
2747 zmbv_decoder_deps="zlib"
2748 zmbv_encoder_deps="zlib"
2749
2750 # hardware accelerators
2751 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2752 cuda_deps="ffnvcodec"
2753 cuvid_deps="ffnvcodec"
2754 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2755 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2756 ffnvcodec_deps_any="libdl LoadLibrary"
2757 nvdec_deps="ffnvcodec"
2758 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2759 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2760 xvmc_deps="X11_extensions_XvMClib_h"
2761
2762 h263_vaapi_hwaccel_deps="vaapi"
2763 h263_vaapi_hwaccel_select="h263_decoder"
2764 h263_videotoolbox_hwaccel_deps="videotoolbox"
2765 h263_videotoolbox_hwaccel_select="h263_decoder"
2766 h264_d3d11va_hwaccel_deps="d3d11va"
2767 h264_d3d11va_hwaccel_select="h264_decoder"
2768 h264_d3d11va2_hwaccel_deps="d3d11va"
2769 h264_d3d11va2_hwaccel_select="h264_decoder"
2770 h264_dxva2_hwaccel_deps="dxva2"
2771 h264_dxva2_hwaccel_select="h264_decoder"
2772 h264_nvdec_hwaccel_deps="nvdec"
2773 h264_nvdec_hwaccel_select="h264_decoder"
2774 h264_vaapi_hwaccel_deps="vaapi"
2775 h264_vaapi_hwaccel_select="h264_decoder"
2776 h264_vdpau_hwaccel_deps="vdpau"
2777 h264_vdpau_hwaccel_select="h264_decoder"
2778 h264_videotoolbox_hwaccel_deps="videotoolbox"
2779 h264_videotoolbox_hwaccel_select="h264_decoder"
2780 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2781 hevc_d3d11va_hwaccel_select="hevc_decoder"
2782 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2783 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2784 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2785 hevc_dxva2_hwaccel_select="hevc_decoder"
2786 hevc_nvdec_hwaccel_deps="nvdec"
2787 hevc_nvdec_hwaccel_select="hevc_decoder"
2788 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2789 hevc_vaapi_hwaccel_select="hevc_decoder"
2790 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2791 hevc_vdpau_hwaccel_select="hevc_decoder"
2792 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2793 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2794 mjpeg_nvdec_hwaccel_deps="nvdec"
2795 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2796 mjpeg_vaapi_hwaccel_deps="vaapi"
2797 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2798 mpeg_xvmc_hwaccel_deps="xvmc"
2799 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2800 mpeg1_nvdec_hwaccel_deps="nvdec"
2801 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2802 mpeg1_vdpau_hwaccel_deps="vdpau"
2803 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2804 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2805 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2806 mpeg1_xvmc_hwaccel_deps="xvmc"
2807 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2808 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2809 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2810 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2811 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2812 mpeg2_dxva2_hwaccel_deps="dxva2"
2813 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2814 mpeg2_nvdec_hwaccel_deps="nvdec"
2815 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2816 mpeg2_vaapi_hwaccel_deps="vaapi"
2817 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2818 mpeg2_vdpau_hwaccel_deps="vdpau"
2819 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2820 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2821 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2822 mpeg2_xvmc_hwaccel_deps="xvmc"
2823 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2824 mpeg4_nvdec_hwaccel_deps="nvdec"
2825 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2826 mpeg4_vaapi_hwaccel_deps="vaapi"
2827 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2828 mpeg4_vdpau_hwaccel_deps="vdpau"
2829 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2830 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2831 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2832 vc1_d3d11va_hwaccel_deps="d3d11va"
2833 vc1_d3d11va_hwaccel_select="vc1_decoder"
2834 vc1_d3d11va2_hwaccel_deps="d3d11va"
2835 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2836 vc1_dxva2_hwaccel_deps="dxva2"
2837 vc1_dxva2_hwaccel_select="vc1_decoder"
2838 vc1_nvdec_hwaccel_deps="nvdec"
2839 vc1_nvdec_hwaccel_select="vc1_decoder"
2840 vc1_vaapi_hwaccel_deps="vaapi"
2841 vc1_vaapi_hwaccel_select="vc1_decoder"
2842 vc1_vdpau_hwaccel_deps="vdpau"
2843 vc1_vdpau_hwaccel_select="vc1_decoder"
2844 vp8_nvdec_hwaccel_deps="nvdec"
2845 vp8_nvdec_hwaccel_select="vp8_decoder"
2846 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2847 vp8_vaapi_hwaccel_select="vp8_decoder"
2848 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2849 vp9_d3d11va_hwaccel_select="vp9_decoder"
2850 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2851 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2852 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2853 vp9_dxva2_hwaccel_select="vp9_decoder"
2854 vp9_nvdec_hwaccel_deps="nvdec"
2855 vp9_nvdec_hwaccel_select="vp9_decoder"
2856 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2857 vp9_vaapi_hwaccel_select="vp9_decoder"
2858 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2859 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2860 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2861 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2862 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2863 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2864
2865 # hardware-accelerated codecs
2866 omx_deps="libdl pthreads"
2867 omx_rpi_select="omx"
2868 qsv_deps="libmfx"
2869 qsvdec_select="qsv"
2870 qsvenc_select="qsv"
2871 qsvvpp_select="qsv"
2872 vaapi_encode_deps="vaapi"
2873 v4l2_m2m_deps_any="linux_videodev2_h"
2874
2875 hwupload_cuda_filter_deps="ffnvcodec"
2876 scale_npp_filter_deps="ffnvcodec libnpp"
2877 scale_cuda_filter_deps="cuda_sdk"
2878 thumbnail_cuda_filter_deps="cuda_sdk"
2879
2880 amf_deps_any="libdl LoadLibrary"
2881 nvenc_deps="ffnvcodec"
2882 nvenc_deps_any="libdl LoadLibrary"
2883 nvenc_encoder_deps="nvenc"
2884
2885 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2886 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2887 h264_amf_encoder_deps="amf"
2888 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2889 h264_cuvid_decoder_deps="cuvid"
2890 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2891 h264_mediacodec_decoder_deps="mediacodec"
2892 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2893 h264_mmal_decoder_deps="mmal"
2894 h264_nvenc_encoder_deps="nvenc"
2895 h264_omx_encoder_deps="omx"
2896 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2897 h264_qsv_encoder_select="qsvenc"
2898 h264_rkmpp_decoder_deps="rkmpp"
2899 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2900 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2901 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2902 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2903 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2904 hevc_amf_encoder_deps="amf"
2905 hevc_cuvid_decoder_deps="cuvid"
2906 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2907 hevc_mediacodec_decoder_deps="mediacodec"
2908 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2909 hevc_nvenc_encoder_deps="nvenc"
2910 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2911 hevc_qsv_encoder_select="hevcparse qsvenc"
2912 hevc_rkmpp_decoder_deps="rkmpp"
2913 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2914 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2915 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2916 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2917 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2918 mjpeg_cuvid_decoder_deps="cuvid"
2919 mjpeg_qsv_encoder_deps="libmfx"
2920 mjpeg_qsv_encoder_select="qsvenc"
2921 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2922 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2923 mpeg1_cuvid_decoder_deps="cuvid"
2924 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2925 mpeg2_crystalhd_decoder_select="crystalhd"
2926 mpeg2_cuvid_decoder_deps="cuvid"
2927 mpeg2_mmal_decoder_deps="mmal"
2928 mpeg2_mediacodec_decoder_deps="mediacodec"
2929 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2930 mpeg2_qsv_encoder_select="qsvenc"
2931 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2932 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2933 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2934 mpeg4_crystalhd_decoder_select="crystalhd"
2935 mpeg4_cuvid_decoder_deps="cuvid"
2936 mpeg4_mediacodec_decoder_deps="mediacodec"
2937 mpeg4_mmal_decoder_deps="mmal"
2938 mpeg4_omx_encoder_deps="omx"
2939 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2940 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2941 msmpeg4_crystalhd_decoder_select="crystalhd"
2942 nvenc_h264_encoder_select="h264_nvenc_encoder"
2943 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2944 vc1_crystalhd_decoder_select="crystalhd"
2945 vc1_cuvid_decoder_deps="cuvid"
2946 vc1_mmal_decoder_deps="mmal"
2947 vc1_qsv_decoder_select="qsvdec vc1_parser"
2948 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2949 vp8_cuvid_decoder_deps="cuvid"
2950 vp8_mediacodec_decoder_deps="mediacodec"
2951 vp8_qsv_decoder_select="qsvdec vp8_parser"
2952 vp8_rkmpp_decoder_deps="rkmpp"
2953 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2954 vp8_vaapi_encoder_select="vaapi_encode"
2955 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2956 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2957 vp9_cuvid_decoder_deps="cuvid"
2958 vp9_mediacodec_decoder_deps="mediacodec"
2959 vp9_rkmpp_decoder_deps="rkmpp"
2960 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2961 vp9_vaapi_encoder_select="vaapi_encode"
2962 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2963 wmv3_crystalhd_decoder_select="crystalhd"
2964
2965 # parsers
2966 aac_parser_select="adts_header"
2967 h264_parser_select="golomb h264dsp h264parse"
2968 hevc_parser_select="hevcparse"
2969 mpegaudio_parser_select="mpegaudioheader"
2970 mpegvideo_parser_select="mpegvideo"
2971 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2972 vc1_parser_select="vc1dsp"
2973
2974 # bitstream_filters
2975 aac_adtstoasc_bsf_select="adts_header"
2976 filter_units_bsf_select="cbs"
2977 h264_metadata_bsf_deps="const_nan"
2978 h264_metadata_bsf_select="cbs_h264"
2979 h264_redundant_pps_bsf_select="cbs_h264"
2980 hevc_metadata_bsf_select="cbs_h265"
2981 mjpeg2jpeg_bsf_select="jpegtables"
2982 mpeg2_metadata_bsf_select="cbs_mpeg2"
2983 trace_headers_bsf_select="cbs"
2984
2985 # external libraries
2986 aac_at_decoder_deps="audiotoolbox"
2987 aac_at_decoder_select="aac_adtstoasc_bsf"
2988 ac3_at_decoder_deps="audiotoolbox"
2989 ac3_at_decoder_select="ac3_parser"
2990 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2991 alac_at_decoder_deps="audiotoolbox"
2992 amr_nb_at_decoder_deps="audiotoolbox"
2993 avisynth_deps_any="libdl LoadLibrary"
2994 avisynth_demuxer_deps="avisynth"
2995 avisynth_demuxer_select="riffdec"
2996 eac3_at_decoder_deps="audiotoolbox"
2997 eac3_at_decoder_select="ac3_parser"
2998 gsm_ms_at_decoder_deps="audiotoolbox"
2999 ilbc_at_decoder_deps="audiotoolbox"
3000 mp1_at_decoder_deps="audiotoolbox"
3001 mp2_at_decoder_deps="audiotoolbox"
3002 mp3_at_decoder_deps="audiotoolbox"
3003 mp1_at_decoder_select="mpegaudioheader"
3004 mp2_at_decoder_select="mpegaudioheader"
3005 mp3_at_decoder_select="mpegaudioheader"
3006 pcm_alaw_at_decoder_deps="audiotoolbox"
3007 pcm_mulaw_at_decoder_deps="audiotoolbox"
3008 qdmc_at_decoder_deps="audiotoolbox"
3009 qdm2_at_decoder_deps="audiotoolbox"
3010 aac_at_encoder_deps="audiotoolbox"
3011 aac_at_encoder_select="audio_frame_queue"
3012 alac_at_encoder_deps="audiotoolbox"
3013 alac_at_encoder_select="audio_frame_queue"
3014 ilbc_at_encoder_deps="audiotoolbox"
3015 ilbc_at_encoder_select="audio_frame_queue"
3016 pcm_alaw_at_encoder_deps="audiotoolbox"
3017 pcm_alaw_at_encoder_select="audio_frame_queue"
3018 pcm_mulaw_at_encoder_deps="audiotoolbox"
3019 pcm_mulaw_at_encoder_select="audio_frame_queue"
3020 chromaprint_muxer_deps="chromaprint"
3021 h264_videotoolbox_encoder_deps="pthreads"
3022 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3023 hevc_videotoolbox_encoder_deps="pthreads"
3024 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3025 libaom_av1_decoder_deps="libaom"
3026 libaom_av1_encoder_deps="libaom"
3027 libcelt_decoder_deps="libcelt"
3028 libcodec2_decoder_deps="libcodec2"
3029 libcodec2_encoder_deps="libcodec2"
3030 libfdk_aac_decoder_deps="libfdk_aac"
3031 libfdk_aac_encoder_deps="libfdk_aac"
3032 libfdk_aac_encoder_select="audio_frame_queue"
3033 libgme_demuxer_deps="libgme"
3034 libgsm_decoder_deps="libgsm"
3035 libgsm_encoder_deps="libgsm"
3036 libgsm_ms_decoder_deps="libgsm"
3037 libgsm_ms_encoder_deps="libgsm"
3038 libilbc_decoder_deps="libilbc"
3039 libilbc_encoder_deps="libilbc"
3040 libkvazaar_encoder_deps="libkvazaar"
3041 libmodplug_demuxer_deps="libmodplug"
3042 libmp3lame_encoder_deps="libmp3lame"
3043 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3044 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3045 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3046 libopencore_amrnb_encoder_select="audio_frame_queue"
3047 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3048 libopenh264_decoder_deps="libopenh264"
3049 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3050 libopenh264_encoder_deps="libopenh264"
3051 libopenjpeg_decoder_deps="libopenjpeg"
3052 libopenjpeg_encoder_deps="libopenjpeg"
3053 libopenmpt_demuxer_deps="libopenmpt"
3054 libopus_decoder_deps="libopus"
3055 libopus_encoder_deps="libopus"
3056 libopus_encoder_select="audio_frame_queue"
3057 librsvg_decoder_deps="librsvg"
3058 libshine_encoder_deps="libshine"
3059 libshine_encoder_select="audio_frame_queue"
3060 libspeex_decoder_deps="libspeex"
3061 libspeex_encoder_deps="libspeex"
3062 libspeex_encoder_select="audio_frame_queue"
3063 libtheora_encoder_deps="libtheora"
3064 libtwolame_encoder_deps="libtwolame"
3065 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3066 libvorbis_decoder_deps="libvorbis"
3067 libvorbis_encoder_deps="libvorbis libvorbisenc"
3068 libvorbis_encoder_select="audio_frame_queue"
3069 libvpx_vp8_decoder_deps="libvpx"
3070 libvpx_vp8_encoder_deps="libvpx"
3071 libvpx_vp9_decoder_deps="libvpx"
3072 libvpx_vp9_encoder_deps="libvpx"
3073 libwavpack_encoder_deps="libwavpack"
3074 libwavpack_encoder_select="audio_frame_queue"
3075 libwebp_encoder_deps="libwebp"
3076 libwebp_anim_encoder_deps="libwebp"
3077 libx262_encoder_deps="libx262"
3078 libx264_encoder_deps="libx264"
3079 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3080 libx264rgb_encoder_select="libx264_encoder"
3081 libx265_encoder_deps="libx265"
3082 libxavs_encoder_deps="libxavs"
3083 libxvid_encoder_deps="libxvid"
3084 libzvbi_teletext_decoder_deps="libzvbi"
3085 videotoolbox_suggest="coreservices"
3086 videotoolbox_deps="corefoundation coremedia corevideo"
3087 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3088
3089 # demuxers / muxers
3090 ac3_demuxer_select="ac3_parser"
3091 aiff_muxer_select="iso_media"
3092 asf_demuxer_select="riffdec"
3093 asf_o_demuxer_select="riffdec"
3094 asf_muxer_select="riffenc"
3095 asf_stream_muxer_select="asf_muxer"
3096 avi_demuxer_select="iso_media riffdec exif"
3097 avi_muxer_select="riffenc"
3098 caf_demuxer_select="iso_media riffdec"
3099 caf_muxer_select="iso_media"
3100 dash_muxer_select="mp4_muxer"
3101 dash_demuxer_deps="libxml2"
3102 dirac_demuxer_select="dirac_parser"
3103 dts_demuxer_select="dca_parser"
3104 dtshd_demuxer_select="dca_parser"
3105 dv_demuxer_select="dvprofile"
3106 dv_muxer_select="dvprofile"
3107 dxa_demuxer_select="riffdec"
3108 eac3_demuxer_select="ac3_parser"
3109 f4v_muxer_select="mov_muxer"
3110 fifo_muxer_deps="threads"
3111 flac_demuxer_select="flac_parser"
3112 hds_muxer_select="flv_muxer"
3113 hls_muxer_select="mpegts_muxer"
3114 hls_muxer_suggest="gcrypt openssl"
3115 image2_alias_pix_demuxer_select="image2_demuxer"
3116 image2_brender_pix_demuxer_select="image2_demuxer"
3117 ipod_muxer_select="mov_muxer"
3118 ismv_muxer_select="mov_muxer"
3119 matroska_audio_muxer_select="matroska_muxer"
3120 matroska_demuxer_select="iso_media riffdec"
3121 matroska_demuxer_suggest="bzlib lzo zlib"
3122 matroska_muxer_select="iso_media riffenc"
3123 mmf_muxer_select="riffenc"
3124 mov_demuxer_select="iso_media riffdec"
3125 mov_demuxer_suggest="zlib"
3126 mov_muxer_select="iso_media riffenc rtpenc_chain"
3127 mp3_demuxer_select="mpegaudio_parser"
3128 mp3_muxer_select="mpegaudioheader"
3129 mp4_muxer_select="mov_muxer"
3130 mpegts_demuxer_select="iso_media"
3131 mpegts_muxer_select="adts_muxer latm_muxer"
3132 mpegtsraw_demuxer_select="mpegts_demuxer"
3133 mxf_d10_muxer_select="mxf_muxer"
3134 mxf_opatom_muxer_select="mxf_muxer"
3135 nut_muxer_select="riffenc"
3136 nuv_demuxer_select="riffdec"
3137 oga_muxer_select="ogg_muxer"
3138 ogg_demuxer_select="dirac_parse"
3139 ogv_muxer_select="ogg_muxer"
3140 opus_muxer_select="ogg_muxer"
3141 psp_muxer_select="mov_muxer"
3142 rtp_demuxer_select="sdp_demuxer"
3143 rtp_muxer_select="golomb"
3144 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3145 rtsp_demuxer_select="http_protocol rtpdec"
3146 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3147 sap_demuxer_select="sdp_demuxer"
3148 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3149 sdp_demuxer_select="rtpdec"
3150 smoothstreaming_muxer_select="ismv_muxer"
3151 spdif_demuxer_select="adts_header"
3152 spdif_muxer_select="adts_header"
3153 spx_muxer_select="ogg_muxer"
3154 swf_demuxer_suggest="zlib"
3155 tak_demuxer_select="tak_parser"
3156 tg2_muxer_select="mov_muxer"
3157 tgp_muxer_select="mov_muxer"
3158 vobsub_demuxer_select="mpegps_demuxer"
3159 w64_demuxer_select="wav_demuxer"
3160 w64_muxer_select="wav_muxer"
3161 wav_demuxer_select="riffdec"
3162 wav_muxer_select="riffenc"
3163 webm_muxer_select="iso_media riffenc"
3164 webm_dash_manifest_demuxer_select="matroska_demuxer"
3165 wtv_demuxer_select="mpegts_demuxer riffdec"
3166 wtv_muxer_select="mpegts_muxer riffenc"
3167 xmv_demuxer_select="riffdec"
3168 xwma_demuxer_select="riffdec"
3169
3170 # indevs / outdevs
3171 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3172 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3173 alsa_indev_deps="alsa"
3174 alsa_outdev_deps="alsa"
3175 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3176 avfoundation_indev_suggest="coregraphics applicationservices"
3177 avfoundation_indev_extralibs="-framework Foundation"
3178 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3179 caca_outdev_deps="libcaca"
3180 decklink_deps_any="libdl LoadLibrary"
3181 decklink_indev_deps="decklink threads"
3182 decklink_indev_extralibs="-lstdc++"
3183 decklink_outdev_deps="decklink threads"
3184 decklink_outdev_extralibs="-lstdc++"
3185 libndi_newtek_indev_deps="libndi_newtek"
3186 libndi_newtek_indev_extralibs="-lndi"
3187 libndi_newtek_outdev_deps="libndi_newtek"
3188 libndi_newtek_outdev_extralibs="-lndi"
3189 dshow_indev_deps="IBaseFilter"
3190 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3191 fbdev_indev_deps="linux_fb_h"
3192 fbdev_outdev_deps="linux_fb_h"
3193 gdigrab_indev_deps="CreateDIBSection"
3194 gdigrab_indev_extralibs="-lgdi32"
3195 gdigrab_indev_select="bmp_decoder"
3196 iec61883_indev_deps="libiec61883"
3197 jack_indev_deps="libjack"
3198 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3199 kmsgrab_indev_deps="libdrm"
3200 lavfi_indev_deps="avfilter"
3201 libcdio_indev_deps="libcdio"
3202 libdc1394_indev_deps="libdc1394"
3203 openal_indev_deps="openal"
3204 opengl_outdev_deps="opengl"
3205 oss_indev_deps_any="sys_soundcard_h"
3206 oss_outdev_deps_any="sys_soundcard_h"
3207 pulse_indev_deps="libpulse"
3208 pulse_outdev_deps="libpulse"
3209 sdl2_outdev_deps="sdl2"
3210 sndio_indev_deps="sndio"
3211 sndio_outdev_deps="sndio"
3212 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3213 v4l2_indev_suggest="libv4l2"
3214 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3215 v4l2_outdev_suggest="libv4l2"
3216 vfwcap_indev_deps="vfw32 vfwcap_defines"
3217 xcbgrab_indev_deps="libxcb"
3218 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3219 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3220 xv_outdev_extralibs="-lXv -lX11 -lXext"
3221
3222 # protocols
3223 async_protocol_deps="threads"
3224 bluray_protocol_deps="libbluray"
3225 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3226 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3227 ffrtmpcrypt_protocol_select="tcp_protocol"
3228 ffrtmphttp_protocol_conflict="librtmp_protocol"
3229 ffrtmphttp_protocol_select="http_protocol"
3230 ftp_protocol_select="tcp_protocol"
3231 gopher_protocol_select="network"
3232 http_protocol_select="tcp_protocol"
3233 http_protocol_suggest="zlib"
3234 httpproxy_protocol_select="tcp_protocol"
3235 httpproxy_protocol_suggest="zlib"
3236 https_protocol_select="tls_protocol"
3237 https_protocol_suggest="zlib"
3238 icecast_protocol_select="http_protocol"
3239 librtmp_protocol_deps="librtmp"
3240 librtmpe_protocol_deps="librtmp"
3241 librtmps_protocol_deps="librtmp"
3242 librtmpt_protocol_deps="librtmp"
3243 librtmpte_protocol_deps="librtmp"
3244 libsmbclient_protocol_deps="libsmbclient gplv3"
3245 libssh_protocol_deps="libssh"
3246 libtls_conflict="openssl gnutls"
3247 mmsh_protocol_select="http_protocol"
3248 mmst_protocol_select="network"
3249 rtmp_protocol_conflict="librtmp_protocol"
3250 rtmp_protocol_select="tcp_protocol"
3251 rtmp_protocol_suggest="zlib"
3252 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3253 rtmpe_protocol_suggest="zlib"
3254 rtmps_protocol_conflict="librtmp_protocol"
3255 rtmps_protocol_select="tls_protocol"
3256 rtmps_protocol_suggest="zlib"
3257 rtmpt_protocol_select="ffrtmphttp_protocol"
3258 rtmpt_protocol_suggest="zlib"
3259 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3260 rtmpte_protocol_suggest="zlib"
3261 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3262 rtmpts_protocol_suggest="zlib"
3263 rtp_protocol_select="udp_protocol"
3264 schannel_conflict="openssl gnutls libtls"
3265 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3266 sctp_protocol_select="network"
3267 securetransport_conflict="openssl gnutls libtls"
3268 srtp_protocol_select="rtp_protocol srtp"
3269 tcp_protocol_select="network"
3270 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3271 tls_protocol_select="tcp_protocol"
3272 udp_protocol_select="network"
3273 udplite_protocol_select="network"
3274 unix_protocol_deps="sys_un_h"
3275 unix_protocol_select="network"
3276
3277 # filters
3278 afftfilt_filter_deps="avcodec"
3279 afftfilt_filter_select="fft"
3280 afir_filter_deps="avcodec"
3281 afir_filter_select="fft"
3282 amovie_filter_deps="avcodec avformat"
3283 aresample_filter_deps="swresample"
3284 ass_filter_deps="libass"
3285 atempo_filter_deps="avcodec"
3286 atempo_filter_select="rdft"
3287 avgblur_opencl_filter_deps="opencl"
3288 azmq_filter_deps="libzmq"
3289 blackframe_filter_deps="gpl"
3290 boxblur_filter_deps="gpl"
3291 bs2b_filter_deps="libbs2b"
3292 colormatrix_filter_deps="gpl"
3293 convolution_opencl_filter_deps="opencl"
3294 convolve_filter_deps="avcodec"
3295 convolve_filter_select="fft"
3296 coreimage_filter_deps="coreimage appkit"
3297 coreimage_filter_extralibs="-framework OpenGL"
3298 coreimagesrc_filter_deps="coreimage appkit"
3299 coreimagesrc_filter_extralibs="-framework OpenGL"
3300 cover_rect_filter_deps="avcodec avformat gpl"
3301 cropdetect_filter_deps="gpl"
3302 deconvolve_filter_deps="avcodec"
3303 deconvolve_filter_select="fft"
3304 deinterlace_qsv_filter_deps="libmfx"
3305 deinterlace_vaapi_filter_deps="vaapi"
3306 delogo_filter_deps="gpl"
3307 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3308 deshake_filter_select="pixelutils"
3309 drawtext_filter_deps="libfreetype"
3310 drawtext_filter_suggest="libfontconfig libfribidi"
3311 elbg_filter_deps="avcodec"
3312 eq_filter_deps="gpl"
3313 fftfilt_filter_deps="avcodec"
3314 fftfilt_filter_select="rdft"
3315 find_rect_filter_deps="avcodec avformat gpl"
3316 firequalizer_filter_deps="avcodec"
3317 firequalizer_filter_select="rdft"
3318 flite_filter_deps="libflite"
3319 framerate_filter_select="pixelutils"
3320 frei0r_filter_deps="frei0r libdl"
3321 frei0r_src_filter_deps="frei0r libdl"
3322 fspp_filter_deps="gpl"
3323 geq_filter_deps="gpl"
3324 histeq_filter_deps="gpl"
3325 hqdn3d_filter_deps="gpl"
3326 interlace_filter_deps="gpl"
3327 kerndeint_filter_deps="gpl"
3328 ladspa_filter_deps="ladspa libdl"
3329 lv2_filter_deps="lv2"
3330 mcdeint_filter_deps="avcodec gpl"
3331 movie_filter_deps="avcodec avformat"
3332 mpdecimate_filter_deps="gpl"
3333 mpdecimate_filter_select="pixelutils"
3334 mptestsrc_filter_deps="gpl"
3335 negate_filter_deps="lut_filter"
3336 nnedi_filter_deps="gpl"
3337 ocr_filter_deps="libtesseract"
3338 ocv_filter_deps="libopencv"
3339 openclsrc_filter_deps="opencl"
3340 overlay_opencl_filter_deps="opencl"
3341 overlay_qsv_filter_deps="libmfx"
3342 overlay_qsv_filter_select="qsvvpp"
3343 owdenoise_filter_deps="gpl"
3344 pan_filter_deps="swresample"
3345 perspective_filter_deps="gpl"
3346 phase_filter_deps="gpl"
3347 pp7_filter_deps="gpl"
3348 pp_filter_deps="gpl postproc"
3349 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3350 program_opencl_filter_deps="opencl"
3351 pullup_filter_deps="gpl"
3352 removelogo_filter_deps="avcodec avformat swscale"
3353 repeatfields_filter_deps="gpl"
3354 resample_filter_deps="avresample"
3355 rubberband_filter_deps="librubberband"
3356 sab_filter_deps="gpl swscale"
3357 scale2ref_filter_deps="swscale"
3358 scale_filter_deps="swscale"
3359 scale_qsv_filter_deps="libmfx"
3360 select_filter_select="pixelutils"
3361 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3362 showcqt_filter_deps="avcodec avformat swscale"
3363 showcqt_filter_suggest="libfontconfig libfreetype"
3364 showcqt_filter_select="fft"
3365 showfreqs_filter_deps="avcodec"
3366 showfreqs_filter_select="fft"
3367 showspectrum_filter_deps="avcodec"
3368 showspectrum_filter_select="fft"
3369 showspectrumpic_filter_deps="avcodec"
3370 showspectrumpic_filter_select="fft"
3371 signature_filter_deps="gpl avcodec avformat"
3372 smartblur_filter_deps="gpl swscale"
3373 sofalizer_filter_deps="libmysofa avcodec"
3374 sofalizer_filter_select="fft"
3375 spectrumsynth_filter_deps="avcodec"
3376 spectrumsynth_filter_select="fft"
3377 spp_filter_deps="gpl avcodec"
3378 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3379 stereo3d_filter_deps="gpl"
3380 subtitles_filter_deps="avformat avcodec libass"
3381 super2xsai_filter_deps="gpl"
3382 pixfmts_super2xsai_test_deps="super2xsai_filter"
3383 tinterlace_filter_deps="gpl"
3384 tinterlace_merge_test_deps="tinterlace_filter"
3385 tinterlace_pad_test_deps="tinterlace_filter"
3386 tonemap_filter_deps="const_nan"
3387 unsharp_opencl_filter_deps="opencl"
3388 uspp_filter_deps="gpl avcodec"
3389 vaguedenoiser_filter_deps="gpl"
3390 vidstabdetect_filter_deps="libvidstab"
3391 vidstabtransform_filter_deps="libvidstab"
3392 libvmaf_filter_deps="libvmaf pthreads"
3393 zmq_filter_deps="libzmq"
3394 zoompan_filter_deps="swscale"
3395 zscale_filter_deps="libzimg const_nan"
3396 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3397 vpp_qsv_filter_deps="libmfx"
3398 vpp_qsv_filter_select="qsvvpp"
3399
3400 # examples
3401 avio_dir_cmd_deps="avformat avutil"
3402 avio_reading_deps="avformat avcodec avutil"
3403 decode_audio_example_deps="avcodec avutil"
3404 decode_video_example_deps="avcodec avutil"
3405 demuxing_decoding_example_deps="avcodec avformat avutil"
3406 encode_audio_example_deps="avcodec avutil"
3407 encode_video_example_deps="avcodec avutil"
3408 extract_mvs_example_deps="avcodec avformat avutil"
3409 filter_audio_example_deps="avfilter avutil"
3410 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3411 filtering_video_example_deps="avfilter avcodec avformat avutil"
3412 http_multiclient_example_deps="avformat avutil fork"
3413 hw_decode_example_deps="avcodec avformat avutil"
3414 metadata_example_deps="avformat avutil"
3415 muxing_example_deps="avcodec avformat avutil swscale"
3416 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3417 remuxing_example_deps="avcodec avformat avutil"
3418 resampling_audio_example_deps="avutil swresample"
3419 scaling_video_example_deps="avutil swscale"
3420 transcode_aac_example_deps="avcodec avformat swresample"
3421 transcoding_example_deps="avfilter avcodec avformat avutil"
3422 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3423 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3424
3425 # EXTRALIBS_LIST
3426 cpu_init_extralibs="pthreads_extralibs"
3427 cws2fws_extralibs="zlib_extralibs"
3428
3429 # libraries, in linking order
3430 avcodec_deps="avutil"
3431 avcodec_suggest="libm"
3432 avcodec_select="null_bsf"
3433 avdevice_deps="avformat avcodec avutil"
3434 avdevice_suggest="libm"
3435 avfilter_deps="avutil"
3436 avfilter_suggest="libm"
3437 avformat_deps="avcodec avutil"
3438 avformat_suggest="libm network zlib"
3439 avresample_deps="avutil"
3440 avresample_suggest="libm"
3441 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3442 postproc_deps="avutil gpl"
3443 postproc_suggest="libm"
3444 swresample_deps="avutil"
3445 swresample_suggest="libm libsoxr"
3446 swscale_deps="avutil"
3447 swscale_suggest="libm"
3448
3449 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3450 avfilter_extralibs="pthreads_extralibs"
3451 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3452
3453 # programs
3454 ffmpeg_deps="avcodec avfilter avformat swresample"
3455 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3456                null_filter
3457                trim_filter"
3458 ffmpeg_suggest="ole32 psapi shell32"
3459 ffplay_deps="avcodec avformat swscale swresample sdl2"
3460 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3461 ffplay_suggest="shell32"
3462 ffprobe_deps="avcodec avformat"
3463 ffprobe_suggest="shell32"
3464
3465 # documentation
3466 podpages_deps="perl"
3467 manpages_deps="perl pod2man"
3468 htmlpages_deps="perl"
3469 htmlpages_deps_any="makeinfo_html texi2html"
3470 txtpages_deps="perl makeinfo"
3471 doc_deps_any="manpages htmlpages podpages txtpages"
3472
3473 # default parameters
3474
3475 logfile="ffbuild/config.log"
3476
3477 # installation paths
3478 prefix_default="/usr/local"
3479 bindir_default='${prefix}/bin'
3480 datadir_default='${prefix}/share/ffmpeg'
3481 docdir_default='${prefix}/share/doc/ffmpeg'
3482 incdir_default='${prefix}/include'
3483 libdir_default='${prefix}/lib'
3484 mandir_default='${prefix}/share/man'
3485
3486 # toolchain
3487 ar_default="ar"
3488 cc_default="gcc"
3489 cxx_default="g++"
3490 host_cc_default="gcc"
3491 doxygen_default="doxygen"
3492 install="install"
3493 ln_s_default="ln -s -f"
3494 nm_default="nm -g"
3495 pkg_config_default=pkg-config
3496 ranlib_default="ranlib"
3497 strip_default="strip"
3498 version_script='--version-script'
3499 objformat="elf32"
3500 x86asmexe_default="nasm"
3501 windres_default="windres"
3502 nvcc_default="nvcc"
3503 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3504 striptype="direct"
3505
3506 # OS
3507 target_os_default=$(tolower $(uname -s))
3508 host_os=$target_os_default
3509
3510 # machine
3511 if test "$target_os_default" = aix; then
3512     arch_default=$(uname -p)
3513     strip_default="strip -X32_64"
3514 else
3515     arch_default=$(uname -m)
3516 fi
3517 cpu="generic"
3518 intrinsics="none"
3519
3520 # configurable options
3521 enable $PROGRAM_LIST
3522 enable $DOCUMENT_LIST
3523 enable $EXAMPLE_LIST
3524 enable $(filter_out avresample $LIBRARY_LIST)
3525 enable stripping
3526
3527 enable asm
3528 enable debug
3529 enable doc
3530 enable faan faandct faanidct
3531 enable optimizations
3532 enable runtime_cpudetect
3533 enable safe_bitstream_reader
3534 enable static
3535 enable swscale_alpha
3536 enable valgrind_backtrace
3537
3538 sws_max_filter_size_default=256
3539 set_default sws_max_filter_size
3540
3541 # internal components are enabled by default
3542 enable $EXTRALIBS_LIST
3543
3544 # Avoid external, non-system, libraries getting enabled by dependency resolution
3545 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3546
3547 # build settings
3548 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3549 LIBPREF="lib"
3550 LIBSUF=".a"
3551 FULLNAME='$(NAME)$(BUILDSUF)'
3552 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3553 SLIBPREF="lib"
3554 SLIBSUF=".so"
3555 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3556 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3557 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3558 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3559 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3560 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3561 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3562
3563 asflags_filter=echo
3564 cflags_filter=echo
3565 ldflags_filter=echo
3566
3567 AS_C='-c'
3568 AS_O='-o $@'
3569 CC_C='-c'
3570 CC_E='-E -o $@'
3571 CC_O='-o $@'
3572 CXX_C='-c'
3573 CXX_O='-o $@'
3574 OBJCC_C='-c'
3575 OBJCC_E='-E -o $@'
3576 OBJCC_O='-o $@'
3577 X86ASM_O='-o $@'
3578 LD_O='-o $@'
3579 LD_LIB='-l%'
3580 LD_PATH='-L'
3581 HOSTCC_C='-c'
3582 HOSTCC_E='-E -o $@'
3583 HOSTCC_O='-o $@'
3584 HOSTLD_O='-o $@'
3585 NVCC_C='-c'
3586 NVCC_O='-o $@'
3587
3588 host_extralibs='-lm'
3589 host_cflags_filter=echo
3590 host_ldflags_filter=echo
3591
3592 target_path='$(CURDIR)'
3593
3594 # since the object filename is not given with the -MM flag, the compiler
3595 # is only able to print the basename, and we must add the path ourselves
3596 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3597 DEPFLAGS='-MM'
3598
3599 mkdir -p ffbuild
3600
3601 # find source path
3602 if test -f configure; then
3603     source_path=.
3604 else
3605     source_path=$(cd $(dirname "$0"); pwd)
3606     case "$source_path" in
3607         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3608     esac
3609     test -e "$source_path/config.h" &&
3610         die "Out of tree builds are impossible with config.h in source dir."
3611 fi
3612
3613 for v in "$@"; do
3614     r=${v#*=}
3615     l=${v%"$r"}
3616     r=$(sh_quote "$r")
3617     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3618 done
3619
3620 find_things(){
3621     thing=$1
3622     pattern=$2
3623     file=$source_path/$3
3624     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3625 }
3626
3627 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3628
3629 find_things_extern(){
3630     thing=$1
3631     pattern=$2
3632     file=$source_path/$3
3633     out=${4:-$thing}
3634     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3635 }
3636
3637 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3638 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3639 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3640 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3641 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3642 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3643 CODEC_LIST="
3644     $ENCODER_LIST
3645     $DECODER_LIST
3646 "
3647 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3648 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3649 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3650 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3651
3652 AVCODEC_COMPONENTS_LIST="
3653     $BSF_LIST
3654     $DECODER_LIST
3655     $ENCODER_LIST
3656     $HWACCEL_LIST
3657     $PARSER_LIST
3658 "
3659
3660 AVDEVICE_COMPONENTS_LIST="
3661     $INDEV_LIST
3662     $OUTDEV_LIST
3663 "
3664
3665 AVFILTER_COMPONENTS_LIST="
3666     $FILTER_LIST
3667 "
3668
3669 AVFORMAT_COMPONENTS_LIST="
3670     $DEMUXER_LIST
3671     $MUXER_LIST
3672     $PROTOCOL_LIST
3673 "
3674
3675 ALL_COMPONENTS="
3676     $AVCODEC_COMPONENTS_LIST
3677     $AVDEVICE_COMPONENTS_LIST
3678     $AVFILTER_COMPONENTS_LIST
3679     $AVFORMAT_COMPONENTS_LIST
3680 "
3681
3682 for n in $COMPONENT_LIST; do
3683     v=$(toupper ${n%s})_LIST
3684     eval enable \$$v
3685     eval ${n}_if_any="\$$v"
3686 done
3687
3688 enable $ARCH_EXT_LIST
3689
3690 die_unknown(){
3691     echo "Unknown option \"$1\"."
3692     echo "See $0 --help for available options."
3693     exit 1
3694 }
3695
3696 print_in_columns() {
3697     cols=$(expr $ncols / 24)
3698     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3699 }
3700
3701 show_list() {
3702     suffix=_$1
3703     shift
3704     echo $* | sed s/$suffix//g | print_in_columns
3705     exit 0
3706 }
3707
3708 rand_list(){
3709     IFS=', '
3710     set -- $*
3711     unset IFS
3712     for thing; do
3713         comp=${thing%:*}
3714         prob=${thing#$comp}
3715         prob=${prob#:}
3716         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3717         echo "prob ${prob:-0.5}"
3718         printf '%s\n' $comp
3719     done
3720 }
3721
3722 do_random(){
3723     action=$1
3724     shift
3725     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3726     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3727 }
3728
3729 for opt do
3730     optval="${opt#*=}"
3731     case "$opt" in
3732         --extra-ldflags=*)
3733             add_ldflags $optval
3734         ;;
3735         --extra-ldexeflags=*)
3736             add_ldexeflags $optval
3737         ;;
3738         --extra-ldsoflags=*)
3739             add_ldsoflags $optval
3740         ;;
3741         --extra-ldlibflags=*)
3742             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3743                  "removed in the future. Use --extra-ldsoflags instead."
3744             add_ldsoflags $optval
3745         ;;
3746         --extra-libs=*)
3747             add_extralibs $optval
3748         ;;
3749         --disable-devices)
3750             disable $INDEV_LIST $OUTDEV_LIST
3751         ;;
3752         --enable-debug=*)
3753             debuglevel="$optval"
3754         ;;
3755         --disable-programs)
3756             disable $PROGRAM_LIST
3757         ;;
3758         --disable-everything)
3759             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3760         ;;
3761         --disable-all)
3762             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3763             disable $LIBRARY_LIST $PROGRAM_LIST doc
3764             enable avutil
3765         ;;
3766         --enable-random|--disable-random)
3767             action=${opt%%-random}
3768             do_random ${action#--} $COMPONENT_LIST
3769         ;;
3770         --enable-random=*|--disable-random=*)
3771             action=${opt%%-random=*}
3772             do_random ${action#--} $optval
3773         ;;
3774         --enable-sdl)
3775             enable sdl2
3776         ;;
3777         --enable-*=*|--disable-*=*)
3778             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3779             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3780             eval list=\$$(toupper $thing)_LIST
3781             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3782             list=$(filter "$name" $list)
3783             [ "$list" = "" ] && warn "Option $opt did not match anything"
3784             $action $list
3785         ;;
3786         --enable-yasm|--disable-yasm)
3787             warn "The ${opt} option is only provided for compatibility and will be\n"\
3788                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3789             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3790         ;;
3791         --yasmexe=*)
3792             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3793                  "removed in the future. Use --x86asmexe instead."
3794             x86asmexe="$optval"
3795         ;;
3796         --enable-?*|--disable-?*)
3797             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3798             if is_in $option $COMPONENT_LIST; then
3799                 test $action = disable && action=unset
3800                 eval $action \$$(toupper ${option%s})_LIST
3801             elif is_in $option $CMDLINE_SELECT; then
3802                 $action $option
3803             else
3804                 die_unknown $opt
3805             fi
3806         ;;
3807         --list-*)
3808             NAME="${opt#--list-}"
3809             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3810             NAME=${NAME%s}
3811             eval show_list $NAME \$$(toupper $NAME)_LIST
3812         ;;
3813         --help|-h) show_help
3814         ;;
3815         --quiet|-q) quiet=yes
3816         ;;
3817         --fatal-warnings) enable fatal_warnings
3818         ;;
3819         --libfuzzer=*)
3820             libfuzzer_path="$optval"
3821         ;;
3822         *)
3823             optname="${opt%%=*}"
3824             optname="${optname#--}"
3825             optname=$(echo "$optname" | sed 's/-/_/g')
3826             if is_in $optname $CMDLINE_SET; then
3827                 eval $optname='$optval'
3828             elif is_in $optname $CMDLINE_APPEND; then
3829                 append $optname "$optval"
3830             else
3831                 die_unknown $opt
3832             fi
3833         ;;
3834     esac
3835 done
3836
3837 for e in $env; do
3838     eval "export $e"
3839 done
3840
3841 if disabled autodetect; then
3842
3843     # Unless iconv is explicitely disabled by the user, we still want to probe
3844     # for the iconv from the libc.
3845     disabled iconv || enable libc_iconv
3846
3847     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3848     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3849 fi
3850 # Mark specifically enabled, but normally autodetected libraries as requested.
3851 for lib in $AUTODETECT_LIBS; do
3852     enabled $lib && request $lib
3853 done
3854 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3855 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3856 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3857
3858 disabled logging && logfile=/dev/null
3859
3860 # command line configuration sanity checks
3861
3862 # we need to build at least one lib type
3863 if ! enabled_any static shared; then
3864     cat <<EOF
3865 At least one library type must be built.
3866 Specify --enable-static to build the static libraries or --enable-shared to
3867 build the shared libraries as well. To only build the shared libraries specify
3868 --disable-static in addition to --enable-shared.
3869 EOF
3870     exit 1
3871 fi
3872
3873 die_license_disabled() {
3874     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3875 }
3876
3877 die_license_disabled_gpl() {
3878     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3879 }
3880
3881 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3882 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3883
3884 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3885 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3886
3887 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3888
3889 if enabled nonfree; then
3890     license="nonfree and unredistributable"
3891 elif enabled gplv3; then
3892     license="GPL version 3 or later"
3893 elif enabled lgplv3; then
3894     license="LGPL version 3 or later"
3895 elif enabled gpl; then
3896     license="GPL version 2 or later"
3897 else
3898     license="LGPL version 2.1 or later"
3899 fi
3900
3901 enabled_all gnutls openssl &&
3902     die "GnuTLS and OpenSSL must not be enabled at the same time."
3903
3904 # Disable all the library-specific components if the library itself
3905 # is disabled, see AVCODEC_LIST and following _LIST variables.
3906
3907 disable_components(){
3908     disabled ${1} && disable $(
3909         eval components="\$$(toupper ${1})_COMPONENTS"
3910         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3911     )
3912 }
3913
3914 map 'disable_components $v' $LIBRARY_LIST
3915
3916 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3917 set >> $logfile
3918
3919 test -n "$valgrind" && toolchain="valgrind-memcheck"
3920
3921 enabled ossfuzz && {
3922     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3923     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3924 }
3925
3926 case "$toolchain" in
3927     *-asan)
3928         cc_default="${toolchain%-asan}"
3929         add_cflags  -fsanitize=address
3930         add_ldflags -fsanitize=address
3931     ;;
3932     *-msan)
3933         cc_default="${toolchain%-msan}"
3934         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3935         add_ldflags -fsanitize=memory
3936     ;;
3937     *-tsan)
3938         cc_default="${toolchain%-tsan}"
3939         add_cflags  -fsanitize=thread -fPIE
3940         add_ldflags -fsanitize=thread -pie
3941         case "$toolchain" in
3942             gcc-tsan)
3943                 add_cflags  -fPIC
3944                 add_ldflags -fPIC
3945                 ;;
3946         esac
3947     ;;
3948     *-usan)
3949         cc_default="${toolchain%-usan}"
3950         add_cflags  -fsanitize=undefined
3951         add_ldflags -fsanitize=undefined
3952     ;;
3953     valgrind-*)
3954         target_exec_default="valgrind"
3955         case "$toolchain" in
3956             valgrind-massif)
3957                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3958                 ;;
3959             valgrind-memcheck)
3960                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3961                 ;;
3962         esac
3963     ;;
3964     msvc)
3965         # Check whether the current MSVC version needs the C99 converter.
3966         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3967         # support enough of C99 to build ffmpeg. Default to the new
3968         # behaviour if the regexp was unable to match anything, since this
3969         # successfully parses the version number of existing supported
3970         # versions that require the converter (MSVC 2010 and 2012).
3971         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3972         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3973             cc_default="cl"
3974             cxx_default="cl"
3975         else
3976             cc_default="c99wrap cl"
3977             cxx_default="c99wrap cl"
3978         fi
3979         ld_default="$source_path/compat/windows/mslink"
3980         nm_default="dumpbin -symbols"
3981         ar_default="lib"
3982         case "$arch" in
3983         aarch64|arm64)
3984             as_default="armasm64"
3985             ;;
3986         arm*)
3987             as_default="armasm"
3988             ;;
3989         esac
3990         target_os_default="win32"
3991         # Use a relative path for TMPDIR. This makes sure all the
3992         # ffconf temp files are written with a relative path, avoiding
3993         # issues with msys/win32 path conversion for MSVC parameters
3994         # such as -Fo<file> or -out:<file>.
3995         TMPDIR=.
3996     ;;
3997     icl)
3998         cc_default="icl"
3999         ld_default="xilink"
4000         nm_default="dumpbin -symbols"
4001         ar_default="xilib"
4002         target_os_default="win32"
4003         TMPDIR=.
4004     ;;
4005     gcov)
4006         add_cflags  -fprofile-arcs -ftest-coverage
4007         add_ldflags -fprofile-arcs -ftest-coverage
4008     ;;
4009     llvm-cov)
4010         add_cflags -fprofile-arcs -ftest-coverage
4011         add_ldflags --coverage
4012     ;;
4013     hardened)
4014         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4015         add_cflags   -fno-strict-overflow -fstack-protector-all
4016         add_ldflags  -Wl,-z,relro -Wl,-z,now
4017         add_cflags   -fPIE
4018         add_ldexeflags -fPIE -pie
4019     ;;
4020     ?*)
4021         die "Unknown toolchain $toolchain"
4022     ;;
4023 esac
4024
4025 if test -n "$cross_prefix"; then
4026     test -n "$arch" && test -n "$target_os" ||
4027         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4028     enable cross_compile
4029 fi
4030
4031 ar_default="${cross_prefix}${ar_default}"
4032 cc_default="${cross_prefix}${cc_default}"
4033 cxx_default="${cross_prefix}${cxx_default}"
4034 nm_default="${cross_prefix}${nm_default}"
4035 pkg_config_default="${cross_prefix}${pkg_config_default}"
4036 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4037     ranlib_default="${cross_prefix}${ranlib_default} -D"
4038 else
4039     ranlib_default="${cross_prefix}${ranlib_default}"
4040 fi
4041 strip_default="${cross_prefix}${strip_default}"
4042 windres_default="${cross_prefix}${windres_default}"
4043
4044 sysinclude_default="${sysroot}/usr/include"
4045
4046 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4047     target_exec target_os x86asmexe nvcc
4048 enabled cross_compile || host_cc_default=$cc
4049 set_default host_cc
4050
4051 pkg_config_fail_message=""
4052 if ! $pkg_config --version >/dev/null 2>&1; then
4053     warn "$pkg_config not found, library detection may fail."
4054     pkg_config=false
4055 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4056     pkg_config_fail_message="
4057 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4058 fi
4059
4060 if test $doxygen != $doxygen_default && \
4061   ! $doxygen --version >/dev/null 2>&1; then
4062     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4063 fi
4064
4065 exesuf() {
4066     case $1 in
4067         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4068     esac
4069 }
4070
4071 EXESUF=$(exesuf $target_os)
4072 HOSTEXESUF=$(exesuf $host_os)
4073
4074 # set temporary file name
4075 : ${TMPDIR:=$TEMPDIR}
4076 : ${TMPDIR:=$TMP}
4077 : ${TMPDIR:=/tmp}
4078
4079 if [ -n "$tempprefix" ] ; then
4080     mktemp(){
4081         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4082         echo "$tmpname"
4083         mkdir "$tmpname"
4084     }
4085 elif ! test_cmd mktemp -u XXXXXX; then
4086     # simple replacement for missing mktemp
4087     # NOT SAFE FOR GENERAL USE
4088     mktemp(){
4089         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4090         echo "$tmpname"
4091         mkdir "$tmpname"
4092     }
4093 fi
4094
4095 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4096     die "Unable to create temporary directory in $TMPDIR."
4097
4098 tmpfile(){
4099     tmp="${FFTMPDIR}/test"$2
4100     (set -C; exec > $tmp) 2> /dev/null ||
4101         die "Unable to create temporary file in $FFTMPDIR."
4102     eval $1=$tmp
4103 }
4104
4105 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4106 trap 'exit 2' INT
4107
4108 tmpfile TMPASM .asm
4109 tmpfile TMPC   .c
4110 tmpfile TMPCPP .cpp
4111 tmpfile TMPE   $EXESUF
4112 tmpfile TMPH   .h
4113 tmpfile TMPM   .m
4114 tmpfile TMPO   .o
4115 tmpfile TMPS   .S
4116 tmpfile TMPSH  .sh
4117 tmpfile TMPV   .ver
4118
4119 unset -f mktemp
4120
4121 chmod +x $TMPE
4122
4123 # make sure we can execute files in $TMPDIR
4124 cat > $TMPSH 2>> $logfile <<EOF
4125 #! /bin/sh
4126 EOF
4127 chmod +x $TMPSH >> $logfile 2>&1
4128 if ! $TMPSH >> $logfile 2>&1; then
4129     cat <<EOF
4130 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4131 variable to another directory and make sure that it is not mounted noexec.
4132 EOF
4133     die "Sanity test failed."
4134 fi
4135
4136 armasm_flags(){
4137     for flag; do
4138         case $flag in
4139             # Filter out MSVC cl.exe options from cflags that shouldn't
4140             # be passed to gas-preprocessor
4141             -M[TD]*)                                            ;;
4142             *)                  echo $flag                      ;;
4143         esac
4144    done
4145 }
4146
4147 cparser_flags(){
4148     for flag; do
4149         case $flag in
4150             -Wno-switch)             echo -Wno-switch-enum ;;
4151             -Wno-format-zero-length) ;;
4152             -Wdisabled-optimization) ;;
4153             -Wno-pointer-sign)       echo -Wno-other ;;
4154             *)                       echo $flag ;;
4155         esac
4156     done
4157 }
4158
4159 msvc_common_flags(){
4160     for flag; do
4161         case $flag in
4162             # In addition to specifying certain flags under the compiler
4163             # specific filters, they must be specified here as well or else the
4164             # generic catch all at the bottom will print the original flag.
4165             -Wall)                ;;
4166             -Wextra)              ;;
4167             -std=c99)             ;;
4168             # Common flags
4169             -fomit-frame-pointer) ;;
4170             -g)                   echo -Z7 ;;
4171             -fno-math-errno)      ;;
4172             -fno-common)          ;;
4173             -fno-signed-zeros)    ;;
4174             -fPIC)                ;;
4175             -mthumb)              ;;
4176             -march=*)             ;;
4177             -lz)                  echo zlib.lib ;;
4178             -lx264)               echo libx264.lib ;;
4179             -lstdc++)             ;;
4180             -l*)                  echo ${flag#-l}.lib ;;
4181             -LARGEADDRESSAWARE)   echo $flag ;;
4182             -L*)                  echo -libpath:${flag#-L} ;;
4183             *)                    echo $flag ;;
4184         esac
4185     done
4186 }
4187
4188 msvc_flags(){
4189     msvc_common_flags "$@"
4190     for flag; do
4191         case $flag in
4192             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4193                                        -wd4554 ;;
4194             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4195                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4196                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4197                                        -wd4307 \
4198                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4199         esac
4200     done
4201 }
4202
4203 icl_flags(){
4204     msvc_common_flags "$@"
4205     for flag; do
4206         case $flag in
4207             # Despite what Intel's documentation says -Wall, which is supported
4208             # on Windows, does enable remarks so disable them here.
4209             -Wall)                echo $flag -Qdiag-disable:remark ;;
4210             -std=c99)             echo -Qstd=c99 ;;
4211             -flto)                echo -ipo ;;
4212         esac
4213     done
4214 }
4215
4216 icc_flags(){
4217     for flag; do
4218         case $flag in
4219             -flto)                echo -ipo ;;
4220             *)                    echo $flag ;;
4221         esac
4222     done
4223 }
4224
4225 suncc_flags(){
4226     for flag; do
4227         case $flag in
4228             -march=*|-mcpu=*)
4229                 case "${flag#*=}" in
4230                     native)                   echo -xtarget=native       ;;
4231                     v9|niagara)               echo -xarch=sparc          ;;
4232                     ultrasparc)               echo -xarch=sparcvis       ;;
4233                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4234                     i586|pentium)             echo -xchip=pentium        ;;
4235                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4236                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4237                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4238                     pentium4*)          echo -xtarget=pentium4           ;;
4239                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4240                     *-sse3)             echo -xarch=sse3                 ;;
4241                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4242                     bonnell)                   echo -xarch=ssse3         ;;
4243                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4244                     westmere)                  echo -xtarget=westmere    ;;
4245                     silvermont)                echo -xarch=sse4_2        ;;
4246                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4247                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4248                                                echo -xarch=avx           ;;
4249                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4250                     btver1)                    echo -xarch=amdsse4a      ;;
4251                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4252                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4253                     k8|opteron|athlon64|athlon-fx)
4254                                                echo -xarch=sse2a         ;;
4255                     athlon*)                   echo -xarch=pentium_proa  ;;
4256                 esac
4257                 ;;
4258             -std=c99)             echo -xc99              ;;
4259             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4260             -fPIC)                echo -KPIC -xcode=pic32 ;;
4261             -W*,*)                echo $flag              ;;
4262             -f*-*|-W*|-mimpure-text)                      ;;
4263             -shared)              echo -G                 ;;
4264             *)                    echo $flag              ;;
4265         esac
4266     done
4267 }
4268
4269 probe_cc(){
4270     pfx=$1
4271     _cc=$2
4272     first=$3
4273
4274     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4275     unset _ld_o _ldflags _ld_lib _ld_path
4276     unset _depflags _DEPCMD _DEPFLAGS
4277     _flags_filter=echo
4278
4279     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4280         true # no-op to avoid reading stdin in following checks
4281     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4282         _type=llvm_gcc
4283         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4284         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4285         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4286         _cflags_speed='-O3'
4287         _cflags_size='-Os'
4288     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4289         _type=gcc
4290         gcc_version=$($_cc --version | head -n1)
4291         gcc_basever=$($_cc -dumpversion)
4292         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4293         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4294         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4295         case $gcc_basever in
4296             2) ;;
4297             2.*) ;;
4298             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4299         esac
4300         if [ "$first" = true ]; then
4301             case $gcc_basever in
4302                 4.2*)
4303                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4304             esac
4305         fi
4306         _cflags_speed='-O3'
4307         _cflags_size='-Os'
4308     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4309         _type=icc
4310         _ident=$($_cc --version | head -n1)
4311         _depflags='-MMD'
4312         _cflags_speed='-O3'
4313         _cflags_size='-Os'
4314         _cflags_noopt='-O1'
4315         _flags_filter=icc_flags
4316     elif $_cc -v 2>&1 | grep -q xlc; then
4317         _type=xlc
4318         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4319         _cflags_speed='-O5'
4320         _cflags_size='-O5 -qcompact'
4321     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4322         test -d "$sysroot" || die "No valid sysroot specified."
4323         _type=armcc
4324         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4325         armcc_conf="$PWD/armcc.conf"
4326         $_cc --arm_linux_configure                 \
4327              --arm_linux_config_file="$armcc_conf" \
4328              --configure_sysroot="$sysroot"        \
4329              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4330              die "Error creating armcc configuration file."
4331         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4332         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4333         as_default="${cross_prefix}gcc"
4334         _depflags='-MMD'
4335         _cflags_speed='-O3'
4336         _cflags_size='-Os'
4337     elif $_cc -v 2>&1 | grep -q clang; then
4338         _type=clang
4339         _ident=$($_cc --version 2>/dev/null | head -n1)
4340         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4341         _cflags_speed='-O3'
4342         _cflags_size='-Oz'
4343     elif $_cc -V 2>&1 | grep -q Sun; then
4344         _type=suncc
4345         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4346         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4347         _DEPFLAGS='-xM1 -xc99'
4348         _ldflags='-std=c99'
4349         _cflags_speed='-O5'
4350         _cflags_size='-O5 -xspace'
4351         _flags_filter=suncc_flags
4352     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4353         _type=pathscale
4354         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4355         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4356         _cflags_speed='-O2'
4357         _cflags_size='-Os'
4358         _flags_filter='filter_out -Wdisabled-optimization'
4359     elif $_cc -v 2>&1 | grep -q Open64; then
4360         _type=open64
4361         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4362         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4363         _cflags_speed='-O2'
4364         _cflags_size='-Os'
4365         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4366     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4367         _type=armasm
4368         _ident=$($_cc | head -n1)
4369         # 4509: "This form of conditional instruction is deprecated"
4370         _flags="-nologo -ignore 4509"
4371         _flags_filter=armasm_flags
4372     elif $_cc 2>&1 | grep -q Intel; then
4373         _type=icl
4374         _ident=$($_cc 2>&1 | head -n1)
4375         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4376         # Not only is O3 broken on 13.x+ but it is slower on all previous
4377         # versions (tested) as well.
4378         _cflags_speed="-O2"
4379         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4380         if $_cc 2>&1 | grep -q Linker; then
4381             _ld_o='-out:$@'
4382         else
4383             _ld_o='-Fe$@'
4384         fi
4385         _cc_o='-Fo$@'
4386         _cc_e='-P'
4387         _flags_filter=icl_flags
4388         _ld_lib='lib%.a'
4389         _ld_path='-libpath:'
4390         # -Qdiag-error to make icl error when seeing certain unknown arguments
4391         _flags='-nologo -Qdiag-error:4044,10157'
4392         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4393         # with MSVC which enables it by default.
4394         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4395         disable stripping
4396     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4397         # lld can emulate multiple different linkers; in ms link.exe mode,
4398         # the -? parameter gives the help output which contains an identifyable
4399         # string, while it gives an error in other modes.
4400         _type=lld-link
4401         # The link.exe mode doesn't have a switch for getting the version,
4402         # but we can force it back to gnu mode and get the version from there.
4403         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4404         _ld_o='-out:$@'
4405         _flags_filter=msvc_flags
4406         _ld_lib='lib%.a'
4407         _ld_path='-libpath:'
4408     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4409         _type=msvc
4410         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4411         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4412         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4413         _cflags_speed="-O2"
4414         _cflags_size="-O1"
4415         _cflags_noopt="-O1"
4416         if $_cc -nologo- 2>&1 | grep -q Linker; then
4417             _ld_o='-out:$@'
4418         else
4419             _ld_o='-Fe$@'
4420         fi
4421         _cc_o='-Fo$@'
4422         _cc_e='-P -Fi$@'
4423         _flags_filter=msvc_flags
4424         _ld_lib='lib%.a'
4425         _ld_path='-libpath:'
4426         _flags='-nologo'
4427         disable stripping
4428     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4429         _type=cparser
4430         _ident=$($_cc --version | head -n1)
4431         _depflags='-MMD'
4432         _cflags_speed='-O4'
4433         _cflags_size='-O2'
4434         _flags_filter=cparser_flags
4435     fi
4436
4437     eval ${pfx}_type=\$_type
4438     eval ${pfx}_ident=\$_ident
4439 }
4440
4441 set_ccvars(){
4442     eval ${1}_C=\${_cc_c-\${${1}_C}}
4443     eval ${1}_E=\${_cc_e-\${${1}_E}}
4444     eval ${1}_O=\${_cc_o-\${${1}_O}}
4445
4446     if [ -n "$_depflags" ]; then
4447         eval ${1}_DEPFLAGS=\$_depflags
4448     else
4449         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4450         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4451         eval DEP${1}FLAGS=\$_flags
4452     fi
4453 }
4454
4455 probe_cc cc "$cc" "true"
4456 cflags_filter=$_flags_filter
4457 cflags_speed=$_cflags_speed
4458 cflags_size=$_cflags_size
4459 cflags_noopt=$_cflags_noopt
4460 add_cflags $_flags $_cflags
4461 cc_ldflags=$_ldflags
4462 set_ccvars CC
4463 set_ccvars CXX
4464
4465 probe_cc hostcc "$host_cc"
4466 host_cflags_filter=$_flags_filter
4467 host_cflags_speed=$_cflags_speed
4468 add_host_cflags  $_flags $_cflags
4469 set_ccvars HOSTCC
4470
4471 test -n "$cc_type" && enable $cc_type ||
4472     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4473
4474 : ${as_default:=$cc}
4475 : ${objcc_default:=$cc}
4476 : ${dep_cc_default:=$cc}
4477 : ${ld_default:=$cc}
4478 : ${host_ld_default:=$host_cc}
4479 set_default ar as objcc dep_cc ld ln_s host_ld windres
4480
4481 probe_cc as "$as"
4482 asflags_filter=$_flags_filter
4483 add_asflags $_flags $_cflags
4484 set_ccvars AS
4485
4486 probe_cc objcc "$objcc"
4487 objcflags_filter=$_flags_filter
4488 add_objcflags $_flags $_cflags
4489 set_ccvars OBJC
4490
4491 probe_cc ld "$ld"
4492 ldflags_filter=$_flags_filter
4493 add_ldflags $_flags $_ldflags
4494 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4495 LD_O=${_ld_o-$LD_O}
4496 LD_LIB=${_ld_lib-$LD_LIB}
4497 LD_PATH=${_ld_path-$LD_PATH}
4498
4499 probe_cc hostld "$host_ld"
4500 host_ldflags_filter=$_flags_filter
4501 add_host_ldflags $_flags $_ldflags
4502 HOSTLD_O=${_ld_o-$HOSTLD_O}
4503
4504 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4505     probe_cc depcc "$dep_cc"
4506     CCDEP=${_DEPCMD:-$DEPCMD}
4507     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4508     DEPCCFLAGS=$_flags
4509 fi
4510
4511 if $ar 2>&1 | grep -q Microsoft; then
4512     arflags="-nologo"
4513     ar_o='-out:$@'
4514 elif $ar 2>&1 | grep -q "\[D\] "; then
4515     arflags="rcD"
4516     ar_o='$@'
4517 else
4518     arflags="rc"
4519     ar_o='$@'
4520 fi
4521
4522 add_cflags $extra_cflags
4523 add_cxxflags $extra_cxxflags
4524 add_objcflags $extra_objcflags
4525 add_asflags $extra_cflags
4526
4527 if test -n "$sysroot"; then
4528     case "$cc_type" in
4529         gcc|llvm_gcc|clang)
4530             add_cppflags --sysroot="$sysroot"
4531             add_ldflags --sysroot="$sysroot"
4532         ;;
4533     esac
4534 fi
4535
4536 if test "$cpu" = host; then
4537     enabled cross_compile &&
4538         die "--cpu=host makes no sense when cross-compiling."
4539
4540     case "$cc_type" in
4541         gcc|llvm_gcc)
4542             check_native(){
4543                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4544                 sed -n "/cc1.*$1=/{
4545                             s/.*$1=\\([^ ]*\\).*/\\1/
4546                             p
4547                             q
4548                         }" $TMPE
4549             }
4550             cpu=$(check_native -march || check_native -mcpu)
4551         ;;
4552         clang)
4553             check_native(){
4554                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4555                 sed -n "/cc1.*-target-cpu /{
4556                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4557                             p
4558                             q
4559                         }" $TMPE
4560             }
4561             cpu=$(check_native -march)
4562         ;;
4563     esac
4564
4565     test "${cpu:-host}" = host &&
4566         die "--cpu=host not supported with compiler $cc"
4567 fi
4568
4569 # Deal with common $arch aliases
4570 case "$arch" in
4571     aarch64|arm64)
4572         arch="aarch64"
4573     ;;
4574     arm*|iPad*|iPhone*)
4575         arch="arm"
4576     ;;
4577     mips*|IP*)
4578         case "$arch" in
4579         *el)
4580             add_cppflags -EL
4581             add_ldflags -EL
4582         ;;
4583         *eb)
4584             add_cppflags -EB
4585             add_ldflags -EB
4586         ;;
4587         esac
4588         arch="mips"
4589     ;;
4590     parisc*|hppa*)
4591         arch="parisc"
4592     ;;
4593     "Power Macintosh"|ppc*|powerpc*)
4594         arch="ppc"
4595     ;;
4596     s390|s390x)
4597         arch="s390"
4598     ;;
4599     sh4|sh)
4600         arch="sh4"
4601     ;;
4602     sun4*|sparc*)
4603         arch="sparc"
4604     ;;
4605     tilegx|tile-gx)
4606         arch="tilegx"
4607     ;;
4608     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4609         arch="x86"
4610     ;;
4611 esac
4612
4613 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4614 enable $arch
4615
4616 # Add processor-specific flags
4617 if enabled aarch64; then
4618
4619     case $cpu in
4620         armv*)
4621             cpuflags="-march=$cpu"
4622         ;;
4623         *)
4624             cpuflags="-mcpu=$cpu"
4625         ;;
4626     esac
4627
4628 elif enabled alpha; then
4629
4630     cpuflags="-mcpu=$cpu"
4631
4632 elif enabled arm; then
4633
4634     check_arm_arch() {
4635         test_cpp_condition stddef.h \
4636             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4637             $cpuflags
4638     }
4639
4640     probe_arm_arch() {
4641         if   check_arm_arch 4;        then echo armv4
4642         elif check_arm_arch 4T;       then echo armv4t
4643         elif check_arm_arch 5;        then echo armv5
4644         elif check_arm_arch 5E;       then echo armv5e
4645         elif check_arm_arch 5T;       then echo armv5t
4646         elif check_arm_arch 5TE;      then echo armv5te
4647         elif check_arm_arch 5TEJ;     then echo armv5te
4648         elif check_arm_arch 6;        then echo armv6
4649         elif check_arm_arch 6J;       then echo armv6j
4650         elif check_arm_arch 6K;       then echo armv6k
4651         elif check_arm_arch 6Z;       then echo armv6z
4652         elif check_arm_arch 6KZ;      then echo armv6zk
4653         elif check_arm_arch 6ZK;      then echo armv6zk
4654         elif check_arm_arch 6T2;      then echo armv6t2
4655         elif check_arm_arch 7;        then echo armv7
4656         elif check_arm_arch 7A  7_A;  then echo armv7-a
4657         elif check_arm_arch 7S;       then echo armv7-a
4658         elif check_arm_arch 7R  7_R;  then echo armv7-r
4659         elif check_arm_arch 7M  7_M;  then echo armv7-m
4660         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4661         elif check_arm_arch 8A  8_A;  then echo armv8-a
4662         fi
4663     }
4664
4665     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4666
4667     case $cpu in
4668         armv*)
4669             cpuflags="-march=$cpu"
4670             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4671         ;;
4672         *)
4673             cpuflags="-mcpu=$cpu"
4674             case $cpu in
4675                 cortex-a*)                               subarch=armv7a  ;;
4676                 cortex-r*)                               subarch=armv7r  ;;
4677                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4678                 arm11*)                                  subarch=armv6   ;;
4679                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4680                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4681                 *)                             subarch=$(probe_arm_arch) ;;
4682             esac
4683         ;;
4684     esac
4685
4686     case "$subarch" in
4687         armv5t*)    enable fast_clz                ;;
4688         armv[6-8]*)
4689             enable fast_clz
4690             disabled fast_unaligned || enable fast_unaligned
4691             ;;
4692     esac
4693
4694 elif enabled avr32; then
4695
4696     case $cpu in
4697         ap7[02]0[0-2])
4698             subarch="avr32_ap"
4699             cpuflags="-mpart=$cpu"
4700         ;;
4701         ap)
4702             subarch="avr32_ap"
4703             cpuflags="-march=$cpu"
4704         ;;
4705         uc3[ab]*)
4706             subarch="avr32_uc"
4707             cpuflags="-mcpu=$cpu"
4708         ;;
4709         uc)
4710             subarch="avr32_uc"
4711             cpuflags="-march=$cpu"
4712         ;;
4713     esac
4714
4715 elif enabled bfin; then
4716
4717     cpuflags="-mcpu=$cpu"
4718
4719 elif enabled mips; then
4720
4721     cpuflags="-march=$cpu"
4722
4723     if [ "$cpu" != "generic" ]; then
4724         disable mips32r2
4725         disable mips32r5
4726         disable mips64r2
4727         disable mips32r6
4728         disable mips64r6
4729         disable loongson2
4730         disable loongson3
4731
4732         case $cpu in
4733             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4734                 enable mips32r2
4735                 disable msa
4736             ;;
4737             p5600|i6400|p6600)
4738                 disable mipsdsp
4739                 disable mipsdspr2
4740             ;;
4741             loongson*)
4742                 enable loongson2
4743                 enable loongson3
4744                 enable local_aligned
4745                 enable simd_align_16
4746                 enable fast_64bit
4747                 enable fast_clz
4748                 enable fast_cmov
4749                 enable fast_unaligned
4750                 disable aligned_stack
4751                 disable mipsfpu
4752                 disable mipsdsp
4753                 disable mipsdspr2
4754                 case $cpu in
4755                     loongson3*)
4756                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4757                     ;;
4758                     loongson2e)
4759                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4760                     ;;
4761                     loongson2f)
4762                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4763                     ;;
4764                 esac
4765             ;;
4766             *)
4767                 # Unknown CPU. Disable everything.
4768                 warn "unknown CPU. Disabling all MIPS optimizations."
4769                 disable mipsfpu
4770                 disable mipsdsp
4771                 disable mipsdspr2
4772                 disable msa
4773                 disable mmi
4774             ;;
4775         esac
4776
4777         case $cpu in
4778             24kc)
4779                 disable mipsfpu
4780                 disable mipsdsp
4781                 disable mipsdspr2
4782             ;;
4783             24kf*)
4784                 disable mipsdsp
4785                 disable mipsdspr2
4786             ;;
4787             24kec|34kc|1004kc)
4788                 disable mipsfpu
4789                 disable mipsdspr2
4790             ;;
4791             24kef*|34kf*|1004kf*)
4792                 disable mipsdspr2
4793             ;;
4794             74kc)
4795                 disable mipsfpu
4796             ;;
4797             p5600)
4798                 enable mips32r5
4799                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4800             ;;
4801             i6400)
4802                 enable mips64r6
4803                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4804             ;;
4805             p6600)
4806                 enable mips64r6
4807                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4808             ;;
4809         esac
4810     else
4811         # We do not disable anything. Is up to the user to disable the unwanted features.
4812         warn 'generic cpu selected'
4813     fi
4814
4815 elif enabled ppc; then
4816
4817     disable ldbrx
4818
4819     case $(tolower $cpu) in
4820         601|ppc601|powerpc601)
4821             cpuflags="-mcpu=601"
4822             disable altivec
4823         ;;
4824         603*|ppc603*|powerpc603*)
4825             cpuflags="-mcpu=603"
4826             disable altivec
4827         ;;
4828         604*|ppc604*|powerpc604*)
4829             cpuflags="-mcpu=604"
4830             disable altivec
4831         ;;
4832         g3|75*|ppc75*|powerpc75*)
4833             cpuflags="-mcpu=750"
4834             disable altivec
4835         ;;
4836         g4|745*|ppc745*|powerpc745*)
4837             cpuflags="-mcpu=7450"
4838             disable vsx
4839         ;;
4840         74*|ppc74*|powerpc74*)
4841             cpuflags="-mcpu=7400"
4842             disable vsx
4843         ;;
4844         g5|970|ppc970|powerpc970)
4845             cpuflags="-mcpu=970"
4846             disable vsx
4847         ;;
4848         power[3-6]*)
4849             cpuflags="-mcpu=$cpu"
4850             disable vsx
4851         ;;
4852         power[7-8]*)
4853             cpuflags="-mcpu=$cpu"
4854         ;;
4855         cell)
4856             cpuflags="-mcpu=cell"
4857             enable ldbrx
4858             disable vsx
4859         ;;
4860         e500mc)
4861             cpuflags="-mcpu=e500mc"
4862             disable altivec
4863         ;;
4864         e500v2)
4865             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4866             disable altivec
4867             disable dcbzl
4868         ;;
4869         e500)
4870             cpuflags="-mcpu=8540 -mhard-float"
4871             disable altivec
4872             disable dcbzl
4873         ;;
4874     esac
4875
4876 elif enabled sparc; then
4877
4878     case $cpu in
4879         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4880             cpuflags="-mcpu=$cpu"
4881         ;;
4882         ultrasparc*|niagara[234])
4883             cpuflags="-mcpu=$cpu"
4884         ;;
4885     esac
4886
4887 elif enabled x86; then
4888
4889     case $cpu in
4890         i[345]86|pentium)
4891             cpuflags="-march=$cpu"
4892             disable i686
4893             disable mmx
4894         ;;
4895         # targets that do NOT support nopl and conditional mov (cmov)
4896         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4897             cpuflags="-march=$cpu"
4898             disable i686
4899         ;;
4900         # targets that do support nopl and conditional mov (cmov)
4901         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4902         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4903         |amdfam10|barcelona|b[dt]ver*|znver*)
4904             cpuflags="-march=$cpu"
4905             enable i686
4906             enable fast_cmov
4907         ;;
4908         # targets that do support conditional mov but on which it's slow
4909         pentium4|pentium4m|prescott|nocona)
4910             cpuflags="-march=$cpu"
4911             enable i686
4912             disable fast_cmov
4913         ;;
4914     esac
4915
4916 fi
4917
4918 if [ "$cpu" != generic ]; then
4919     add_cflags  $cpuflags
4920     add_asflags $cpuflags
4921     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4922 fi
4923
4924 # compiler sanity check
4925 test_exec <<EOF
4926 int main(void){ return 0; }
4927 EOF
4928 if test "$?" != 0; then
4929     echo "$cc is unable to create an executable file."
4930     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4931         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4932         echo "Only do this if you know what cross compiling means."
4933     fi
4934     die "C compiler test failed."
4935 fi
4936
4937 add_cppflags -D_ISOC99_SOURCE
4938 add_cxxflags -D__STDC_CONSTANT_MACROS
4939 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4940
4941 # some compilers silently accept -std=c11, so we also need to check that the
4942 # version macro is defined properly
4943 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4944     add_cflags -std=c11 ||
4945     check_cflags -std=c99
4946
4947 check_cppflags -D_FILE_OFFSET_BITS=64
4948 check_cppflags -D_LARGEFILE_SOURCE
4949
4950 add_host_cppflags -D_ISOC99_SOURCE
4951 check_host_cflags -std=c99
4952 check_host_cflags -Wall
4953 check_host_cflags $host_cflags_speed
4954
4955 check_64bit(){
4956     arch32=$1
4957     arch64=$2
4958     expr=${3:-'sizeof(void *) > 4'}
4959     test_code cc "" "int test[2*($expr) - 1]" &&
4960         subarch=$arch64 || subarch=$arch32
4961     enable $subarch
4962 }
4963
4964 case "$arch" in
4965     aarch64|alpha|ia64)
4966         enabled shared && enable_weak pic
4967     ;;
4968     mips)
4969         check_64bit mips mips64 '_MIPS_SIM > 1'
4970         enabled shared && enable_weak pic
4971     ;;
4972     parisc)
4973         check_64bit parisc parisc64
4974         enabled shared && enable_weak pic
4975     ;;
4976     ppc)
4977         check_64bit ppc ppc64
4978         enabled shared && enable_weak pic
4979     ;;
4980     s390)
4981         check_64bit s390 s390x
4982         enabled shared && enable_weak pic
4983     ;;
4984     sparc)
4985         check_64bit sparc sparc64
4986         enabled shared && enable_weak pic
4987     ;;
4988     x86)
4989         check_64bit x86_32 x86_64
4990         # Treat x32 as x64 for now. Note it also needs pic if shared
4991         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
4992             subarch=x86_64 && enable x86_64 && disable x86_32
4993         if enabled x86_64; then
4994             enabled shared && enable_weak pic
4995             objformat=elf64
4996         fi
4997     ;;
4998 esac
4999
5000 # OS specific
5001 case $target_os in
5002     aix)
5003         SHFLAGS=-shared
5004         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5005         enabled shared && add_ldflags -Wl,-brtl
5006         arflags='-Xany -r -c'
5007         ;;
5008     android)
5009         disable symver
5010         enable section_data_rel_ro
5011         SLIB_INSTALL_NAME='$(SLIBNAME)'
5012         SLIB_INSTALL_LINKS=
5013         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5014         ;;
5015     haiku)
5016         prefix_default="/boot/common"
5017         network_extralibs="-lnetwork"
5018         host_extralibs=
5019         ;;
5020     sunos)
5021         SHFLAGS='-shared -Wl,-h,$$(@F)'
5022         enabled x86 && append SHFLAGS -mimpure-text
5023         network_extralibs="-lsocket -lnsl"
5024         add_cppflags -D__EXTENSIONS__
5025         # When using suncc to build, the Solaris linker will mark
5026         # an executable with each instruction set encountered by
5027         # the Solaris assembler.  As our libraries contain their own
5028         # guards for processor-specific code, instead suppress
5029         # generation of the HWCAPS ELF section on Solaris x86 only.
5030         enabled_all suncc x86 &&
5031             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5032             add_ldflags -Wl,-M,mapfile
5033         nm_default='nm -P -g'
5034         version_script='-M'
5035         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5036         ;;
5037     netbsd)
5038         disable symver
5039         oss_indev_extralibs="-lossaudio"
5040         oss_outdev_extralibs="-lossaudio"
5041         enabled gcc || check_ldflags -Wl,-zmuldefs
5042         ;;
5043     openbsd|bitrig)
5044         disable symver
5045         SHFLAGS='-shared'
5046         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5047         SLIB_INSTALL_LINKS=
5048         oss_indev_extralibs="-lossaudio"
5049         oss_outdev_extralibs="-lossaudio"
5050         ;;
5051     dragonfly)
5052         disable symver
5053         ;;
5054     freebsd)
5055         ;;
5056     bsd/os)
5057         add_extralibs -lpoll -lgnugetopt
5058         strip="strip -d"
5059         ;;
5060     darwin)
5061         enabled ppc && add_asflags -force_cpusubtype_ALL
5062         install_name_dir_default='$(SHLIBDIR)'
5063         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5064         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5065         strip="${strip} -x"
5066         add_ldflags -Wl,-dynamic,-search_paths_first
5067         check_cflags -Werror=partial-availability
5068         SLIBSUF=".dylib"
5069         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5070         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5071         enabled x86_64 && objformat="macho64" || objformat="macho32"
5072         enabled_any pic shared x86_64 ||
5073             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5074         check_header dispatch/dispatch.h &&
5075             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5076         if test -n "$sysroot"; then
5077             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5078             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5079         fi
5080         version_script='-exported_symbols_list'
5081         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5082         ;;
5083     msys*)
5084         die "Native MSYS builds are discouraged, please use the MINGW environment."
5085         ;;
5086     mingw32*|mingw64*)
5087         target_os=mingw32
5088         LIBTARGET=i386
5089         if enabled x86_64; then
5090             LIBTARGET="i386:x86-64"
5091         elif enabled arm; then
5092             LIBTARGET="arm"
5093         elif enabled aarch64; then
5094             LIBTARGET="arm64"
5095         fi
5096         if enabled shared; then
5097             # Cannot build both shared and static libs when using dllimport.
5098             disable static
5099         fi
5100         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5101         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5102         shlibdir_default="$bindir_default"
5103         SLIBPREF=""
5104         SLIBSUF=".dll"
5105         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5106         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5107         if test_cmd lib.exe -list; then
5108             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5109             if enabled x86_64; then
5110                 LIBTARGET=x64
5111             fi
5112         else
5113             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5114         fi
5115         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5116         SLIB_INSTALL_LINKS=
5117         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5118         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5119         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5120         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5121         enabled x86_64 && objformat="win64" || objformat="win32"
5122         dlltool="${cross_prefix}dlltool"
5123         ranlib=:
5124         enable dos_paths
5125         check_ldflags -Wl,--nxcompat,--dynamicbase
5126         # Lets work around some stupidity in binutils.
5127         # ld will strip relocations from executables even though we need them
5128         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5129         # however ld then forgets what the entry point should be (oops) so we
5130         # have to manually (re)set it.
5131         if enabled x86_32; then
5132             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5133         elif enabled x86_64; then
5134             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5135             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5136             # Set image base >4GB for extra entropy with HEASLR
5137             add_ldexeflags -Wl,--image-base,0x140000000
5138             append SHFLAGS -Wl,--image-base,0x180000000
5139         fi
5140         ;;
5141     win32|win64)
5142         disable symver
5143         if enabled shared; then
5144             # Link to the import library instead of the normal static library
5145             # for shared libs.
5146             LD_LIB='%.lib'
5147             # Cannot build both shared and static libs with MSVC or icl.
5148             disable static
5149         fi
5150         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5151         shlibdir_default="$bindir_default"
5152         SLIBPREF=""
5153         SLIBSUF=".dll"
5154         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5155         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5156         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5157         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5158         SLIB_INSTALL_LINKS=
5159         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5160         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5161         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5162         enabled x86_64 && objformat="win64" || objformat="win32"
5163         ranlib=:
5164         enable dos_paths
5165         ;;
5166     cygwin*)
5167         target_os=cygwin
5168         shlibdir_default="$bindir_default"
5169         SLIBPREF="cyg"
5170         SLIBSUF=".dll"
5171         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5172         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5173         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5174         SLIB_INSTALL_LINKS=
5175         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5176         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5177         enabled x86_64 && objformat="win64" || objformat="win32"
5178         enable dos_paths
5179         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5180         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5181         ;;
5182     *-dos|freedos|opendos)
5183         network_extralibs="-lsocket"
5184         objformat="coff"
5185         enable dos_paths
5186         add_cppflags -U__STRICT_ANSI__
5187         ;;
5188     linux)
5189         enable section_data_rel_ro
5190         enabled_any arm aarch64 && enable_weak linux_perf
5191         ;;
5192     irix*)
5193         target_os=irix
5194         ranlib="echo ignoring ranlib"
5195         ;;
5196     os/2*)
5197         strip="lxlite -CS"
5198         striptype=""
5199         objformat="aout"
5200         add_cppflags -D_GNU_SOURCE
5201         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5202         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5203         LIBSUF="_s.a"
5204         SLIBPREF=""
5205         SLIBSUF=".dll"
5206         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5207         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5208         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5209             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5210             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5211             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5212             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5213         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5214             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5215         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5216         SLIB_INSTALL_LINKS=
5217         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5218         enable dos_paths
5219         enable_weak os2threads
5220         ;;
5221     gnu/kfreebsd)
5222         add_cppflags -D_BSD_SOURCE
5223         ;;
5224     gnu)
5225         ;;
5226     qnx)
5227         add_cppflags -D_QNX_SOURCE
5228         network_extralibs="-lsocket"
5229         ;;
5230     symbian)
5231         SLIBSUF=".dll"
5232         enable dos_paths
5233         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5234         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5235         add_ldflags -Wl,--target1-abs,--no-undefined \
5236                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5237                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5238         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5239                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5240                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5241         ;;
5242     minix)
5243         ;;
5244     none)
5245         ;;
5246     *)
5247         die "Unknown OS '$target_os'."
5248         ;;
5249 esac
5250
5251 # test if creating links works
5252 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5253 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5254 mkdir "$link_dest"
5255 $ln_s "$link_dest" "$link_name"
5256 touch "$link_dest/test_file"
5257 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5258     # create link to source path
5259     [ -e src ] && rm src
5260     $ln_s "$source_path" src
5261     source_link=src
5262 else
5263     # creating directory links doesn't work
5264     # fall back to using the full source path
5265     source_link="$source_path"
5266 fi
5267 # cleanup
5268 rm -r "$link_dest"
5269 rm -r "$link_name"
5270
5271 # determine libc flavour
5272
5273 probe_libc(){
5274     pfx=$1
5275     pfx_no_=${pfx%_}
5276     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5277     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5278         eval ${pfx}libc_type=uclibc
5279         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5280     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5281         eval ${pfx}libc_type=glibc
5282         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5283     # MinGW headers can be installed on Cygwin, so check for newlib first.
5284     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5285         eval ${pfx}libc_type=newlib
5286         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5287     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5288     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5289         eval ${pfx}libc_type=mingw64
5290         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5291             add_compat msvcrt/snprintf.o
5292             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5293         fi
5294         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5295         eval test \$${pfx_no_}cc_type = "gcc" &&
5296             add_${pfx}cppflags -D__printf__=__gnu_printf__
5297         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5298             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5299     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5300          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5301         eval ${pfx}libc_type=mingw32
5302         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5303             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5304             die "ERROR: MinGW32 runtime version must be >= 3.15."
5305         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5306         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5307             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5308         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5309             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5310         eval test \$${pfx_no_}cc_type = "gcc" &&
5311             add_${pfx}cppflags -D__printf__=__gnu_printf__
5312     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5313         eval ${pfx}libc_type=msvcrt
5314         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5315             if [ "$pfx" = host_ ]; then
5316                 add_host_cppflags -Dsnprintf=_snprintf
5317             else
5318                 add_compat strtod.o strtod=avpriv_strtod
5319                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5320                                              _snprintf=avpriv_snprintf  \
5321                                              vsnprintf=avpriv_vsnprintf
5322             fi
5323         fi
5324         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5325         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5326         # 0x601 by default unless something else is set by the user.
5327         # This can easily lead to us detecting functions only present
5328         # in such new versions and producing binaries requiring windows 7.0.
5329         # Therefore explicitly set the default to Vista unless the user has
5330         # set something else on the command line.
5331         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5332         # family. For these cases, configure is free to use any functions
5333         # found in the SDK headers by default. (Alternatively, we could force
5334         # _WIN32_WINNT to 0x0602 in that case.)
5335         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5336             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5337 #ifdef WINAPI_FAMILY
5338 #include <winapifamily.h>
5339 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5340 #error not desktop
5341 #endif
5342 #endif
5343 EOF
5344         if [ "$pfx" = "" ]; then
5345             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5346             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5347         fi
5348     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5349         eval ${pfx}libc_type=klibc
5350     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5351         eval ${pfx}libc_type=bionic
5352     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5353         eval ${pfx}libc_type=solaris
5354         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5355     fi
5356     test_${pfx}cc <<EOF
5357 #include <time.h>
5358 void *v = localtime_r;
5359 EOF
5360 test "$?" != 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
5361 #include <time.h>
5362 void *v = localtime_r;
5363 EOF
5364
5365     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5366 }
5367
5368 probe_libc
5369 probe_libc host_
5370
5371 # hacks for compiler/libc/os combinations
5372
5373 case $libc_type in
5374     bionic)
5375         add_compat strtod.o strtod=avpriv_strtod
5376         ;;
5377 esac
5378
5379 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5380     add_cppflags '-I\$(SRC_PATH)/compat/float'
5381
5382 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5383
5384 set_default libdir
5385 : ${shlibdir_default:="$libdir"}
5386 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5387
5388 set_default $PATHS_LIST
5389 set_default nm
5390
5391 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5392
5393 enable_weak_pic() {
5394     disabled pic && return
5395     enable pic
5396     add_cppflags -DPIC
5397     case "$target_os" in
5398     mingw*|cygwin*|win*)
5399         ;;
5400     *)
5401         add_cflags -fPIC
5402         add_asflags -fPIC
5403         ;;
5404     esac
5405 }
5406
5407 enabled pic && enable_weak_pic
5408
5409 test_cc <<EOF || die "Symbol mangling check failed."
5410 int ff_extern;
5411 EOF
5412 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5413 extern_prefix=${sym%%ff_extern*}
5414
5415 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5416
5417 for restrict_keyword in restrict __restrict__ __restrict ""; do
5418     test_code cc "" "char * $restrict_keyword p" && break
5419 done
5420
5421 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5422
5423 # The global variable ensures the bits appear unchanged in the object file.
5424 test_cc <<EOF || die "endian test failed"
5425 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5426 EOF
5427 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5428
5429 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5430
5431 if ! enabled ppc64 || enabled bigendian; then
5432     disable vsx
5433 fi
5434
5435 check_gas() {
5436     log "check_gas using '$as' as AS"
5437     # :vararg is used on aarch64, arm and ppc altivec
5438     check_as vararg "
5439 .macro m n, y:vararg=0
5440 \n: .int \y
5441 .endm
5442 m x" || return 1
5443     # .altmacro is only used in arm asm
5444     ! enabled arm || check_as gnu_as ".altmacro"
5445 }
5446
5447 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5448     nogas=:
5449     enabled_any arm aarch64 && nogas=die
5450     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5451     as_noop=-v
5452
5453     case $as_type in
5454         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5455         gcc)  gaspp_as_type=gas ;;
5456         *)    gaspp_as_type=$as_type ;;
5457     esac
5458
5459     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5460
5461     test "${as#*gas-preprocessor.pl}" != "$as" ||
5462     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5463         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5464
5465     if ! check_gas ; then
5466         as=${gas:=$as}
5467         check_gas || \
5468             $nogas "GNU assembler not found, install/update gas-preprocessor"
5469     fi
5470
5471     check_as as_func ".func test
5472                       .endfunc"
5473 fi
5474
5475 check_inline_asm inline_asm_labels '"1:\n"'
5476
5477 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5478
5479 if enabled aarch64; then
5480     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5481     # internal assembler in clang 3.3 does not support this instruction
5482     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5483     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5484
5485     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5486
5487 elif enabled alpha; then
5488
5489     check_cflags -mieee
5490
5491 elif enabled arm; then
5492
5493     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5494     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5495 float func(float a, float b){ return a+b; }
5496 EOF
5497     enabled thumb && check_cflags -mthumb || check_cflags -marm
5498
5499     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5500         :
5501     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5502         :
5503     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5504         case "${cross_prefix:-$cc}" in
5505             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5506             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5507 __asm__ (".eabi_attribute 28, 1");
5508 int main(void) { return 0; }
5509 EOF
5510         esac
5511         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5512     fi
5513
5514     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5515     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5516     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5517     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5518     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5519     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5520     enabled setend  && check_insn setend  'setend be'
5521
5522     [ $target_os = linux ] || [ $target_os = android ] ||
5523         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5524             $ARCH_EXT_LIST_ARM
5525
5526     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5527
5528     check_as as_arch_directive ".arch armv7-a"
5529     check_as as_fpu_directive  ".fpu neon"
5530
5531     # llvm's integrated assembler supports .object_arch from llvm 3.5
5532     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5533         check_as as_object_arch ".object_arch armv4"
5534
5535     # MS armasm fails to assemble our PIC constructs
5536     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5537
5538 elif enabled mips; then
5539
5540     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5541     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5542     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5543
5544     # Enable minimum ISA based on selected options
5545     if enabled mips64; then
5546         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5547         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5548         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5549     else
5550         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5551         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5552         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5553         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5554     fi
5555
5556     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5557     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5558     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5559     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5560     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5561
5562     if enabled bigendian && enabled msa; then
5563         disable msa
5564     fi
5565
5566 elif enabled parisc; then
5567
5568     if enabled gcc; then
5569         case $($cc -dumpversion) in
5570             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5571         esac
5572     fi
5573
5574 elif enabled ppc; then
5575
5576     enable local_aligned
5577
5578     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5579     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5580     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5581     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5582
5583     if enabled altivec; then
5584         check_cflags -maltivec -mabi=altivec
5585
5586         # check if our compiler supports Motorola AltiVec C API
5587         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5588                                     vector signed int v2 = (vector signed int) { 1 };
5589                                     v1 = vec_add(v1, v2);"
5590
5591         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5592     fi
5593
5594     if enabled vsx; then
5595         check_cflags -mvsx &&
5596         check_cc vsx altivec.h "int v[4] = { 0 };
5597                                 vector signed int v1 = vec_vsx_ld(0, v);"
5598     fi
5599
5600     if enabled power8; then
5601         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5602     fi
5603
5604 elif enabled x86; then
5605
5606     check_builtin rdtsc    intrin.h   "__rdtsc()"
5607     check_builtin mm_empty mmintrin.h "_mm_empty()"
5608
5609     enable local_aligned
5610
5611     # check whether EBP is available on x86
5612     # As 'i' is stored on the stack, this program will crash
5613     # if the base pointer is used to access it because the
5614     # base pointer is cleared in the inline assembly code.
5615     check_exec_crash <<EOF && enable ebp_available
5616 volatile int i=0;
5617 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5618 return i;
5619 EOF
5620
5621     # check whether EBX is available on x86
5622     check_inline_asm ebx_available '""::"b"(0)' &&
5623         check_inline_asm ebx_available '"":::"%ebx"'
5624
5625     # check whether xmm clobbers are supported
5626     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5627
5628     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5629         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5630
5631     # check whether binutils is new enough to compile SSSE3/MMXEXT
5632     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5633     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5634
5635     probe_x86asm(){
5636         x86asmexe_probe=$1
5637         if test_cmd $x86asmexe_probe -v; then
5638             x86asmexe=$x86asmexe_probe
5639             x86asm_type=nasm
5640             x86asm_debug="-g -F dwarf"
5641             X86ASMDEP=
5642             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5643         elif test_cmd $x86asmexe_probe --version; then
5644             x86asmexe=$x86asmexe_probe
5645             x86asm_type=yasm
5646             x86asm_debug="-g dwarf2"
5647             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5648             X86ASM_DEPFLAGS=
5649         fi
5650         check_x86asm x86asm "movbe ecx, [5]"
5651     }
5652
5653     if ! disabled_any asm mmx x86asm; then
5654         disable x86asm
5655         for program in $x86asmexe nasm yasm; do
5656             probe_x86asm $program && break
5657         done
5658         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5659         X86ASMFLAGS="-f $objformat"
5660         enabled pic               && append X86ASMFLAGS "-DPIC"
5661         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5662         case "$objformat" in
5663             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5664         esac
5665
5666         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5667         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5668         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5669         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5670         check_x86asm cpunop          "CPU amdnop"
5671     fi
5672
5673     case "$cpu" in
5674         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5675             disable fast_clz
5676         ;;
5677     esac
5678
5679 fi
5680
5681 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5682
5683 check_ldflags -Wl,--as-needed
5684 check_ldflags -Wl,-z,noexecstack
5685
5686 if ! disabled network; then
5687     check_func getaddrinfo $network_extralibs
5688     check_func inet_aton $network_extralibs
5689
5690     check_type netdb.h "struct addrinfo"
5691     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5692     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5693     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5694     check_type poll.h "struct pollfd"
5695     check_type netinet/sctp.h "struct sctp_event_subscribe"
5696     check_struct "sys/socket.h" "struct msghdr" msg_flags
5697     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5698     check_type netinet/in.h "struct sockaddr_in6"
5699     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5700     check_type "sys/types.h sys/socket.h" socklen_t
5701
5702     # Prefer arpa/inet.h over winsock2
5703     if check_header arpa/inet.h ; then
5704         check_func closesocket
5705     elif check_header winsock2.h ; then
5706         check_func_headers winsock2.h closesocket -lws2 &&
5707             network_extralibs="-lws2" ||
5708         { check_func_headers winsock2.h closesocket -lws2_32 &&
5709             network_extralibs="-lws2_32"; } || disable winsock2_h network
5710         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5711
5712         check_type ws2tcpip.h socklen_t
5713         check_type ws2tcpip.h "struct addrinfo"
5714         check_type ws2tcpip.h "struct group_source_req"
5715         check_type ws2tcpip.h "struct ip_mreq_source"
5716         check_type ws2tcpip.h "struct ipv6_mreq"
5717         check_type winsock2.h "struct pollfd"
5718         check_struct winsock2.h "struct sockaddr" sa_len
5719         check_type ws2tcpip.h "struct sockaddr_in6"
5720         check_type ws2tcpip.h "struct sockaddr_storage"
5721     else
5722         disable network
5723     fi
5724 fi
5725
5726 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5727 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5728 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5729 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5730 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5731 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5732 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5733
5734 case "$custom_allocator" in
5735     jemalloc)
5736         # jemalloc by default does not use a prefix
5737         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5738     ;;
5739     tcmalloc)
5740         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5741         malloc_prefix=tc_
5742     ;;
5743 esac
5744
5745 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5746 check_func  ${malloc_prefix}memalign            && enable memalign
5747 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5748
5749 check_func  access
5750 check_func_headers stdlib.h arc4random
5751 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5752 check_func  fcntl
5753 check_func  fork
5754 check_func  gethrtime
5755 check_func  getopt
5756 check_func  getrusage
5757 check_func  gettimeofday
5758 check_func  isatty
5759 check_func  mkstemp
5760 check_func  mmap
5761 check_func  mprotect
5762 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5763 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5764 check_func  sched_getaffinity
5765 check_func  setrlimit
5766 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5767 check_func  strerror_r
5768 check_func  sysconf
5769 check_func  sysctl
5770 check_func  usleep
5771
5772 check_func_headers conio.h kbhit
5773 check_func_headers io.h setmode
5774 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5775 check_func_headers mach/mach_time.h mach_absolute_time
5776 check_func_headers stdlib.h getenv
5777 check_func_headers sys/stat.h lstat
5778
5779 check_func_headers windows.h GetProcessAffinityMask
5780 check_func_headers windows.h GetProcessTimes
5781 check_func_headers windows.h GetSystemTimeAsFileTime
5782 check_func_headers windows.h LoadLibrary
5783 check_func_headers windows.h MapViewOfFile
5784 check_func_headers windows.h PeekNamedPipe
5785 check_func_headers windows.h SetConsoleTextAttribute
5786 check_func_headers windows.h SetConsoleCtrlHandler
5787 check_func_headers windows.h Sleep
5788 check_func_headers windows.h VirtualAlloc
5789 check_func_headers glob.h glob
5790 enabled xlib &&
5791     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5792
5793 check_header direct.h
5794 check_header dirent.h
5795 check_header dxgidebug.h
5796 check_header dxva.h
5797 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5798 check_header io.h
5799 check_header libcrystalhd/libcrystalhd_if.h
5800 check_header malloc.h
5801 check_header net/udplite.h
5802 check_header poll.h
5803 check_header sys/param.h
5804 check_header sys/resource.h
5805 check_header sys/select.h
5806 check_header sys/time.h
5807 check_header sys/un.h
5808 check_header termios.h
5809 check_header unistd.h
5810 check_header valgrind/valgrind.h
5811 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5812 check_header windows.h
5813 check_header X11/extensions/XvMClib.h
5814 check_header asm/types.h
5815
5816 # it seems there are versions of clang in some distros that try to use the
5817 # gcc headers, which explodes for stdatomic
5818 # so we also check that atomics actually work here
5819 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5820
5821 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5822 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5823 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5824 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5825 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5826
5827 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5828 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5829 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5830
5831 enabled appkit       && check_apple_framework AppKit
5832 enabled audiotoolbox && check_apple_framework AudioToolbox
5833 enabled avfoundation && check_apple_framework AVFoundation
5834 enabled coreimage    && check_apple_framework CoreImage
5835 enabled videotoolbox && check_apple_framework VideoToolbox
5836
5837 check_apple_framework CoreFoundation
5838 check_apple_framework CoreMedia
5839 check_apple_framework CoreVideo
5840
5841 enabled avfoundation && {
5842     disable coregraphics applicationservices
5843     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5844     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5845
5846 enabled videotoolbox && {
5847     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5848     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5849 }
5850
5851 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5852
5853 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5854 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5855 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5856 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5857 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5858
5859 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5860 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5861 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5862 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5863 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5864 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5865 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5866 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5867 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5868 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5869
5870 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5871
5872 if ! disabled ffnvcodec; then
5873     check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.1" \
5874         "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5875 fi
5876
5877 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5878
5879 if ! disabled w32threads && ! enabled pthreads; then
5880     check_func_headers "windows.h process.h" _beginthreadex &&
5881         check_type "windows.h" CONDITION_VARIABLE &&
5882         enable w32threads || disable w32threads
5883     if ! enabled w32threads && enabled winrt; then
5884         check_func_headers "windows.h" CreateThread &&
5885             enable w32threads || disable w32threads
5886     fi
5887 fi
5888
5889 # check for some common methods of building with pthread support
5890 # do this before the optional library checks as some of them require pthreads
5891 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5892     if check_lib pthreads pthread.h pthread_join   -pthread &&
5893        check_lib pthreads pthread.h pthread_create -pthread; then
5894         add_cflags -pthread
5895     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5896          check_lib pthreads pthread.h pthread_create -pthreads; then
5897         add_cflags -pthreads
5898     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5899          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5900         add_cflags -ldl -pthread
5901     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5902          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5903         :
5904     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5905          check_lib pthreads pthread.h pthread_create -lpthread; then
5906         :
5907     elif check_func pthread_join && check_func pthread_create; then
5908         enable pthreads
5909     fi
5910     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5911
5912     if enabled pthreads; then
5913         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5914         check_func pthread_cancel $pthreads_extralibs
5915     fi
5916 fi
5917
5918 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5919 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5920 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5921
5922 # On some systems dynamic loading requires no extra linker flags
5923 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5924
5925 check_lib libm math.h sin -lm
5926
5927 atan2f_args=2
5928 copysign_args=2
5929 hypot_args=2
5930 ldexpf_args=2
5931 powf_args=2
5932
5933 for func in $MATH_FUNCS; do
5934     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5935 done
5936
5937 for func in $COMPLEX_FUNCS; do
5938     eval check_complexfunc $func \${${func}_args:-1}
5939 done
5940
5941 # these are off by default, so fail if requested and not available
5942 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5943 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5944 enabled decklink          && { require_header DeckLinkAPI.h &&
5945                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5946 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5947 enabled frei0r            && require_header frei0r.h
5948 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5949 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5950 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5951 enabled ladspa            && require_header ladspa.h
5952 enabled libaom            && require_pkg_config libaom "aom >= 0.1.0" aom/aom_codec.h aom_codec_version
5953 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5954 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5955 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5956 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5957 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5958 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5959                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5960                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5961 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5962 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
5963 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5964 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5965 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5966                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5967                                  warn "using libfdk without pkg-config"; } }
5968 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"
5969 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5970 enabled fontconfig        && enable libfontconfig
5971 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5972 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5973 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5974 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5975                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5976 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5977                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5978                                done || die "ERROR: libgsm not found"; }
5979 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5980 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5981 # While it may appear that require is being used as a pkg-config
5982 # fallback for libmfx, it is actually being used to detect a different
5983 # installation route altogether.  If libmfx is installed via the Intel
5984 # Media SDK or Intel Media Server Studio, these don't come with
5985 # pkg-config support.  Instead, users should make sure that the build
5986 # can find the libraries and headers through other means.
5987 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5988                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5989 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5990 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
5991 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5992 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5993                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5994                                die "ERROR: libnpp not found"; }
5995 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5996 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5997 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5998                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5999                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6000                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6001 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6002 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6003                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6004 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6005 enabled libopus           && {
6006     enabled libopus_decoder && {
6007         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6008     }
6009     enabled libopus_encoder && {
6010         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6011     }
6012 }
6013 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6014 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6015 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6016 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6017 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6018 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6019                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6020 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6021 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6022 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6023 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6024 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6025 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6026 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6027 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6028                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6029                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6030 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6031 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6032 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
6033 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6034 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6035                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6036
6037 enabled libvpx            && {
6038     enabled libvpx_vp8_decoder && {
6039         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6040             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6041                 die "ERROR: libvpx decoder version must be >=1.4.0";
6042     }
6043     enabled libvpx_vp8_encoder && {
6044         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6045             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6046                 die "ERROR: libvpx encoder version must be >=1.4.0";
6047     }
6048     enabled libvpx_vp9_decoder && {
6049         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6050             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6051     }
6052     enabled libvpx_vp9_encoder && {
6053         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6054             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6055     }
6056     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6057         die "libvpx enabled but no supported decoders found"
6058     fi
6059 }
6060
6061 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6062 enabled libwebp           && {
6063     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6064     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6065 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6066                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6067                                  warn "using libx264 without pkg-config"; } } &&
6068                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6069                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6070 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6071                              require_cpp_condition x265.h "X265_BUILD >= 68"
6072 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6073 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6074 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6075 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6076 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6077                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6078                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6079 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6080 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6081 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6082                                { ! enabled cross_compile &&
6083                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6084                                  add_ldflags -L/opt/vc/lib/ &&
6085                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6086                                die "ERROR: mmal not found" &&
6087                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6088 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6089                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6090                                die "ERROR: openal not found"; } &&
6091                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6092                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6093 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6094                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6095                                die "ERROR: opencl not found"; } &&
6096                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6097                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6098                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6099 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6100                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6101                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6102                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6103                                die "ERROR: opengl not found."
6104                              }
6105 enabled omx               && require_header OMX_Core.h
6106 enabled omx_rpi           && { check_header OMX_Core.h ||
6107                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6108                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6109 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6110                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6111                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6112                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6113                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6114                                die "ERROR: openssl not found"; }
6115 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6116                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6117                                { enabled libdrm ||
6118                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6119                              }
6120
6121 if enabled gcrypt; then
6122     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6123     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6124         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6125         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6126         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6127             die "ERROR: gcrypt not found"
6128         add_cflags $gcrypt_cflags
6129     else
6130         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6131     fi
6132 fi
6133
6134 if enabled sdl2; then
6135     SDL2_CONFIG="${cross_prefix}sdl2-config"
6136     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6137     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6138         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6139         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6140         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6141         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6142         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6143             enable sdl2
6144     fi
6145     if test $target_os = "mingw32"; then
6146         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6147     fi
6148 fi
6149
6150 if enabled decklink; then
6151     case $target_os in
6152         mingw32*|mingw64*|win32|win64)
6153             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6154             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6155             ;;
6156     esac
6157 fi
6158
6159 enabled securetransport &&
6160     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6161     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6162         disable securetransport
6163
6164 enabled securetransport &&
6165     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6166
6167 enabled schannel &&
6168     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6169     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6170     schannel_extralibs="-lsecur32" ||
6171         disable schannel
6172
6173 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6174 enabled makeinfo \
6175     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6176     && enable makeinfo_html || disable makeinfo_html
6177 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6178 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6179 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6180 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6181
6182 # check V4L2 codecs available in the API
6183 check_header linux/fb.h
6184 check_header linux/videodev2.h
6185 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6186 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6187 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6188 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6189 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6190 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6191 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6192 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6193 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6194 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6195 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6196
6197 check_header sys/videoio.h
6198 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6199
6200 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6201 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6202 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6203 # w32api 3.12 had it defined wrong
6204 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6205
6206 check_type "dshow.h" IBaseFilter
6207
6208 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6209 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6210     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6211     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6212     check_header "dev/ic/bt8xx.h"
6213
6214 if check_struct sys/soundcard.h audio_buf_info bytes; then
6215     enable_sanitized sys/soundcard.h
6216 else
6217     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6218     #include <sys/soundcard.h>
6219     audio_buf_info abc;
6220 EOF
6221 fi
6222
6223 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6224     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6225
6226 enabled libjack &&
6227     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6228
6229 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6230
6231 if enabled libcdio; then
6232     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6233     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6234     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6235     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6236     die "ERROR: No usable libcdio/cdparanoia found"
6237 fi
6238
6239 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6240     disable libxcb_shm libxcb_shape libxcb_xfixes
6241
6242 if enabled libxcb; then
6243     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6244     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6245     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6246 fi
6247
6248 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6249
6250 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6251 # the desktop api partition
6252 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6253 #ifdef WINAPI_FAMILY
6254 #include <winapifamily.h>
6255 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6256 #error desktop, not uwp
6257 #else
6258 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6259 #endif
6260 #else
6261 #error no family set
6262 #endif
6263 EOF
6264
6265 enabled vaapi &&
6266     check_lib vaapi va/va.h vaInitialize -lva
6267
6268 enabled vaapi &&
6269     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6270
6271 if enabled vaapi; then
6272     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6273     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6274 fi
6275
6276 enabled vaapi &&
6277     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6278
6279 if enabled_all opencl libdrm ; then
6280     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6281         enable opencl_drm_beignet
6282     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6283         enable opencl_drm_arm
6284 fi
6285
6286 if enabled_all opencl vaapi ; then
6287     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6288     if enabled libmfx ; then
6289         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6290             enable opencl_vaapi_intel_media
6291     fi
6292 fi
6293
6294 if enabled_all opencl dxva2 ; then
6295     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6296         enable opencl_dxva2
6297 fi
6298
6299 if enabled_all opencl d3d11va ; then
6300     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6301         enable opencl_d3d11
6302 fi
6303
6304 enabled vdpau &&
6305     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6306
6307 enabled vdpau &&
6308     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6309
6310 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6311
6312 if enabled x86; then
6313     case $target_os in
6314         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6315             ;;
6316         *)
6317             disable ffnvcodec cuvid nvdec nvenc
6318             ;;
6319     esac
6320 else
6321     disable ffnvcodec cuvid nvdec nvenc
6322 fi
6323
6324 enabled ffnvcodec && enable cuda
6325
6326 enabled nvenc &&
6327     test_cc -I$source_path <<EOF || disable nvenc
6328 #include <ffnvcodec/nvEncodeAPI.h>
6329 NV_ENCODE_API_FUNCTION_LIST flist;
6330 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6331 int main(void) { return 0; }
6332 EOF
6333
6334 enabled amf &&
6335     check_cpp_condition amf "AMF/core/Version.h" \
6336         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6337
6338 # Funny iconv installations are not unusual, so check it after all flags have been set
6339 if enabled libc_iconv; then
6340     check_func_headers iconv.h iconv
6341 elif enabled iconv; then
6342     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6343 fi
6344
6345 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6346
6347 # add some useful compiler flags if supported
6348 check_cflags -Wdeclaration-after-statement
6349 check_cflags -Wall
6350 check_cflags -Wdisabled-optimization
6351 check_cflags -Wpointer-arith
6352 check_cflags -Wredundant-decls
6353 check_cflags -Wwrite-strings
6354 check_cflags -Wtype-limits
6355 check_cflags -Wundef
6356 check_cflags -Wmissing-prototypes
6357 check_cflags -Wno-pointer-to-int-cast
6358 check_cflags -Wstrict-prototypes
6359 check_cflags -Wempty-body
6360
6361 if enabled extra_warnings; then
6362     check_cflags -Wcast-qual
6363     check_cflags -Wextra
6364     check_cflags -Wpedantic
6365 fi
6366
6367 check_disable_warning(){
6368     warning_flag=-W${1#-Wno-}
6369     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6370 }
6371
6372 test_cflags -Werror=unused-command-line-argument &&
6373     append unknown_warning_flags "-Werror=unused-command-line-argument"
6374 test_cflags -Werror=unknown-warning-option &&
6375     append unknown_warning_flags "-Werror=unknown-warning-option"
6376
6377 check_disable_warning -Wno-parentheses
6378 check_disable_warning -Wno-switch
6379 check_disable_warning -Wno-format-zero-length
6380 check_disable_warning -Wno-pointer-sign
6381 check_disable_warning -Wno-unused-const-variable
6382 check_disable_warning -Wno-bool-operation
6383
6384 check_disable_warning_headers(){
6385     warning_flag=-W${1#-Wno-}
6386     test_cflags $warning_flag && add_cflags_headers $1
6387 }
6388
6389 check_disable_warning_headers -Wno-deprecated-declarations
6390 check_disable_warning_headers -Wno-unused-variable
6391
6392 test_cc <<EOF && enable blocks_extension
6393 void (^block)(void);
6394 EOF
6395
6396 # add some linker flags
6397 check_ldflags -Wl,--warn-common
6398 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6399 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6400 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6401
6402 # add some strip flags
6403 check_stripflags -x
6404
6405 enabled neon_clobber_test &&
6406     check_ldflags -Wl,--wrap,avcodec_open2              \
6407                   -Wl,--wrap,avcodec_decode_audio4      \
6408                   -Wl,--wrap,avcodec_decode_video2      \
6409                   -Wl,--wrap,avcodec_decode_subtitle2   \
6410                   -Wl,--wrap,avcodec_encode_audio2      \
6411                   -Wl,--wrap,avcodec_encode_video2      \
6412                   -Wl,--wrap,avcodec_encode_subtitle    \
6413                   -Wl,--wrap,avcodec_send_packet        \
6414                   -Wl,--wrap,avcodec_receive_packet     \
6415                   -Wl,--wrap,avcodec_send_frame         \
6416                   -Wl,--wrap,avcodec_receive_frame      \
6417                   -Wl,--wrap,swr_convert                \
6418                   -Wl,--wrap,avresample_convert ||
6419     disable neon_clobber_test
6420
6421 enabled xmm_clobber_test &&
6422     check_ldflags -Wl,--wrap,avcodec_open2              \
6423                   -Wl,--wrap,avcodec_decode_audio4      \
6424                   -Wl,--wrap,avcodec_decode_video2      \
6425                   -Wl,--wrap,avcodec_decode_subtitle2   \
6426                   -Wl,--wrap,avcodec_encode_audio2      \
6427                   -Wl,--wrap,avcodec_encode_video2      \
6428                   -Wl,--wrap,avcodec_encode_subtitle    \
6429                   -Wl,--wrap,avcodec_send_packet        \
6430                   -Wl,--wrap,avcodec_receive_packet     \
6431                   -Wl,--wrap,avcodec_send_frame         \
6432                   -Wl,--wrap,avcodec_receive_frame      \
6433                   -Wl,--wrap,swr_convert                \
6434                   -Wl,--wrap,avresample_convert         \
6435                   -Wl,--wrap,sws_scale ||
6436     disable xmm_clobber_test
6437
6438 check_ld "cc" proper_dce <<EOF
6439 extern const int array[512];
6440 static inline int func(void) { return array[0]; }
6441 int main(void) { return 0; }
6442 EOF
6443
6444 if enabled proper_dce; then
6445     echo "X { local: *; };" > $TMPV
6446     if test_ldflags -Wl,${version_script},$TMPV; then
6447         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6448         quotes='""'
6449         test_cc <<EOF && enable symver_asm_label
6450 void ff_foo(void) __asm__ ("av_foo@VERSION");
6451 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6452 EOF
6453         test_cc <<EOF && enable symver_gnu_asm
6454 __asm__(".symver ff_foo,av_foo@VERSION");
6455 void ff_foo(void) {}
6456 EOF
6457     fi
6458 fi
6459
6460 if [ -z "$optflags" ]; then
6461     if enabled small; then
6462         optflags=$cflags_size
6463     elif enabled optimizations; then
6464         optflags=$cflags_speed
6465     else
6466         optflags=$cflags_noopt
6467     fi
6468 fi
6469
6470 if [ -z "$nvccflags" ]; then
6471     nvccflags=$nvccflags_default
6472 fi
6473
6474 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6475     nvccflags="$nvccflags -m64"
6476 else
6477     nvccflags="$nvccflags -m32"
6478 fi
6479
6480 check_optflags(){
6481     check_cflags "$@"
6482     enabled lto && check_ldflags "$@"
6483 }
6484
6485 check_optflags $optflags
6486 check_optflags -fno-math-errno
6487 check_optflags -fno-signed-zeros
6488
6489 if enabled lto; then
6490     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6491     check_cflags  -flto
6492     check_ldflags -flto $cpuflags
6493     disable inline_asm_direct_symbol_refs
6494 fi
6495
6496 enabled ftrapv && check_cflags -ftrapv
6497
6498 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6499 int x;
6500 EOF
6501
6502
6503 if enabled icc; then
6504     # Just warnings, no remarks
6505     check_cflags -w1
6506     # -wd: Disable following warnings
6507     # 144, 167, 556: -Wno-pointer-sign
6508     # 188: enumerated type mixed with another type
6509     # 1292: attribute "foo" ignored
6510     # 1419: external declaration in primary source file
6511     # 10006: ignoring unknown option -fno-signed-zeros
6512     # 10148: ignoring unknown option -Wno-parentheses
6513     # 10156: ignoring option '-W'; no argument required
6514     # 13200: No EMMS instruction before call to function
6515     # 13203: No EMMS instruction before return from function
6516     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6517     # 11030: Warning unknown option --as-needed
6518     # 10156: ignoring option '-export'; no argument required
6519     check_ldflags -wd10156,11030
6520     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6521     enable ebp_available
6522     # The test above does not test linking
6523     enabled lto && disable symver_asm_label
6524     if enabled x86_32; then
6525         icc_version=$($cc -dumpversion)
6526         test ${icc_version%%.*} -ge 11 &&
6527             check_cflags -falign-stack=maintain-16-byte ||
6528             disable aligned_stack
6529     fi
6530 elif enabled gcc; then
6531     check_optflags -fno-tree-vectorize
6532     check_cflags -Werror=format-security
6533     check_cflags -Werror=implicit-function-declaration
6534     check_cflags -Werror=missing-prototypes
6535     check_cflags -Werror=return-type
6536     check_cflags -Werror=vla
6537     check_cflags -Wformat
6538     check_cflags -fdiagnostics-color=auto
6539     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6540     if enabled x86_32; then
6541         case $target_os in
6542         *bsd*)
6543             # BSDs don't guarantee a 16 byte aligned stack, but we can
6544             # request GCC to try to maintain 16 byte alignment throughout
6545             # function calls. Library entry points that might call assembly
6546             # functions align the stack. (The parameter means 2^4 bytes.)
6547             check_cflags -mpreferred-stack-boundary=4
6548             ;;
6549         esac
6550     fi
6551 elif enabled llvm_gcc; then
6552     check_cflags -mllvm -stack-alignment=16
6553 elif enabled clang; then
6554     if enabled x86_32; then
6555         # Clang doesn't support maintaining alignment without assuming the
6556         # same alignment in every function. If 16 byte alignment would be
6557         # enabled, one would also have to either add attribute_align_arg on
6558         # every single entry point into the libraries or enable -mstackrealign
6559         # (doing stack realignment in every single function).
6560         case $target_os in
6561         mingw32|win32|*bsd*)
6562             disable aligned_stack
6563             ;;
6564         *)
6565             check_cflags -mllvm -stack-alignment=16
6566             check_cflags -mstack-alignment=16
6567             ;;
6568         esac
6569     else
6570         check_cflags -mllvm -stack-alignment=16
6571         check_cflags -mstack-alignment=16
6572     fi
6573     check_cflags -Qunused-arguments
6574     check_cflags -Werror=implicit-function-declaration
6575     check_cflags -Werror=missing-prototypes
6576     check_cflags -Werror=return-type
6577 elif enabled cparser; then
6578     add_cflags -Wno-missing-variable-declarations
6579     add_cflags -Wno-empty-statement
6580 elif enabled armcc; then
6581     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6582     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6583     # 2523: use of inline assembly is deprecated
6584     add_cflags -W${armcc_opt},--diag_suppress=2523
6585     add_cflags -W${armcc_opt},--diag_suppress=1207
6586     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6587     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6588     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6589     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6590 elif enabled pathscale; then
6591     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6592     disable inline_asm
6593 elif enabled_any msvc icl; then
6594     enabled x86_32 && disable aligned_stack
6595     enabled_all x86_32 debug && add_cflags -Oy-
6596     enabled debug && add_ldflags -debug
6597     enable pragma_deprecated
6598     if enabled icl; then
6599         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6600         # (correctly) on icl 13.x.
6601         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6602             add_cflags -Qansi-alias
6603         # Some inline asm is not compilable in debug
6604         if enabled debug; then
6605             disable ebp_available
6606             disable ebx_available
6607         fi
6608     fi
6609     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6610     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6611     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6612     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6613     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6614     # MSVC 2013 and newer can handle it fine.
6615     # If this declspec fails, force including stdlib.h before the restrict redefinition
6616     # happens in config.h.
6617     if [ $restrict_keyword != restrict ]; then
6618         test_cc <<EOF || add_cflags -FIstdlib.h
6619 __declspec($restrict_keyword) void *foo(int);
6620 EOF
6621     fi
6622     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6623     # Issue has been fixed in MSVC v19.00.24218.
6624     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6625         check_cflags -d2SSAOptimizer-
6626     # enable utf-8 source processing on VS2015 U2 and newer
6627     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6628         add_cflags -utf-8
6629 fi
6630
6631 for pfx in "" host_; do
6632     varname=${pfx%_}cc_type
6633     eval "type=\$$varname"
6634     if [ "$type" = "msvc" ]; then
6635         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6636 static inline int foo(int a) { return a; }
6637 EOF
6638     fi
6639 done
6640
6641 case $as_type in
6642     clang)
6643         add_asflags -Qunused-arguments
6644     ;;
6645 esac
6646
6647 case $ld_type in
6648     clang)
6649         check_ldflags -Qunused-arguments
6650     ;;
6651 esac
6652
6653 enable frame_thread_encoder
6654
6655 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6656
6657 check_deps $CONFIG_LIST       \
6658            $CONFIG_EXTRA      \
6659            $HAVE_LIST         \
6660            $ALL_COMPONENTS    \
6661
6662 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"
6663 enabled avresample && warn "Building with deprecated library libavresample"
6664
6665 if test $target_os = "haiku"; then
6666     disable memalign
6667     disable posix_memalign
6668 fi
6669
6670 flatten_extralibs(){
6671     unset nested_entries
6672     list_name=$1
6673     eval list=\$${1}
6674     for entry in $list; do
6675         entry_copy=$entry
6676         resolve entry_copy
6677         append nested_entries $(filter '*_extralibs' $entry_copy)
6678         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6679         eval $entry="\$flat_entries"
6680     done
6681     append $list_name "$nested_entries"
6682
6683     resolve nested_entries
6684     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6685         flatten_extralibs $list_name
6686     fi
6687 }
6688
6689 flatten_extralibs_wrapper(){
6690     list_name=$1
6691     flatten_extralibs $list_name
6692     unique $list_name
6693     resolve $list_name
6694     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6695     eval printf \''%s'\' \""\$$list_name"\"
6696 }
6697
6698 for linkunit in $LIBRARY_LIST; do
6699     unset current_extralibs
6700     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6701     for comp in ${components}; do
6702         enabled $comp || continue
6703         comp_extralibs="${comp}_extralibs"
6704         append current_extralibs $comp_extralibs
6705     done
6706     eval prepend ${linkunit}_extralibs $current_extralibs
6707 done
6708
6709 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6710     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6711 done
6712
6713 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6714
6715 for thread in $THREADS_LIST; do
6716     if enabled $thread; then
6717         test -n "$thread_type" &&
6718             die "ERROR: Only one thread type must be selected." ||
6719             thread_type="$thread"
6720     fi
6721 done
6722
6723 if disabled stdatomic; then
6724     if enabled atomics_gcc; then
6725         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6726     elif enabled atomics_win32; then
6727         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6728     elif enabled atomics_suncc; then
6729         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6730     elif enabled pthreads; then
6731         add_compat atomics/pthread/stdatomic.o
6732         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6733     else
6734         enabled threads && die "Threading is enabled, but no atomics are available"
6735         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6736     fi
6737 fi
6738
6739 # Check if requested libraries were found.
6740 for lib in $AUTODETECT_LIBS; do
6741     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6742 done
6743
6744 enabled zlib && add_cppflags -DZLIB_CONST
6745
6746 # conditional library dependencies, in linking order
6747 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6748 enabled afir_filter         && prepend avfilter_deps "avcodec"
6749 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6750 enabled aresample_filter    && prepend avfilter_deps "swresample"
6751 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6752 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6753 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6754 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6755 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6756 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6757 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6758 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6759 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6760 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6761 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6762 enabled pan_filter          && prepend avfilter_deps "swresample"
6763 enabled pp_filter           && prepend avfilter_deps "postproc"
6764 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6765 enabled resample_filter && prepend avfilter_deps "avresample"
6766 enabled sab_filter          && prepend avfilter_deps "swscale"
6767 enabled scale_filter    && prepend avfilter_deps "swscale"
6768 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6769 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6770 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6771 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6772 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6773 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6774 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6775 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6776 enabled spp_filter          && prepend avfilter_deps "avcodec"
6777 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6778 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6779 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6780
6781 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6782
6783 #FIXME
6784 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6785
6786 enabled opus_decoder    && prepend avcodec_deps "swresample"
6787
6788 expand_deps(){
6789     lib_deps=${1}_deps
6790     eval "deps=\$$lib_deps"
6791     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6792     unique $lib_deps
6793 }
6794
6795 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6796 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6797
6798 map 'expand_deps $v' $LIBRARY_LIST
6799
6800 if test "$quiet" != "yes"; then
6801
6802 echo "install prefix            $prefix"
6803 echo "source path               $source_path"
6804 echo "C compiler                $cc"
6805 echo "C library                 $libc_type"
6806 if test "$host_cc" != "$cc"; then
6807     echo "host C compiler           $host_cc"
6808     echo "host C library            $host_libc_type"
6809 fi
6810 echo "ARCH                      $arch ($cpu)"
6811 if test "$build_suffix" != ""; then
6812     echo "build suffix              $build_suffix"
6813 fi
6814 if test "$progs_suffix" != ""; then
6815     echo "progs suffix              $progs_suffix"
6816 fi
6817 if test "$extra_version" != ""; then
6818     echo "version string suffix     $extra_version"
6819 fi
6820 echo "big-endian                ${bigendian-no}"
6821 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6822 if enabled x86; then
6823     echo "standalone assembly       ${x86asm-no}"
6824     echo "x86 assembler             ${x86asmexe}"
6825     echo "MMX enabled               ${mmx-no}"
6826     echo "MMXEXT enabled            ${mmxext-no}"
6827     echo "3DNow! enabled            ${amd3dnow-no}"
6828     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6829     echo "SSE enabled               ${sse-no}"
6830     echo "SSSE3 enabled             ${ssse3-no}"
6831     echo "AESNI enabled             ${aesni-no}"
6832     echo "AVX enabled               ${avx-no}"
6833     echo "AVX2 enabled              ${avx2-no}"
6834     echo "AVX-512 enabled           ${avx512-no}"
6835     echo "XOP enabled               ${xop-no}"
6836     echo "FMA3 enabled              ${fma3-no}"
6837     echo "FMA4 enabled              ${fma4-no}"
6838     echo "i686 features enabled     ${i686-no}"
6839     echo "CMOV is fast              ${fast_cmov-no}"
6840     echo "EBX available             ${ebx_available-no}"
6841     echo "EBP available             ${ebp_available-no}"
6842 fi
6843 if enabled aarch64; then
6844     echo "NEON enabled              ${neon-no}"
6845     echo "VFP enabled               ${vfp-no}"
6846 fi
6847 if enabled arm; then
6848     echo "ARMv5TE enabled           ${armv5te-no}"
6849     echo "ARMv6 enabled             ${armv6-no}"
6850     echo "ARMv6T2 enabled           ${armv6t2-no}"
6851     echo "VFP enabled               ${vfp-no}"
6852     echo "NEON enabled              ${neon-no}"
6853     echo "THUMB enabled             ${thumb-no}"
6854 fi
6855 if enabled mips; then
6856     echo "MIPS FPU enabled          ${mipsfpu-no}"
6857     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6858     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6859     echo "MIPS MSA enabled          ${msa-no}"
6860     echo "LOONGSON MMI enabled      ${mmi-no}"
6861 fi
6862 if enabled ppc; then
6863     echo "AltiVec enabled           ${altivec-no}"
6864     echo "VSX enabled               ${vsx-no}"
6865     echo "POWER8 enabled            ${power8-no}"
6866     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6867     echo "dcbzl available           ${dcbzl-no}"
6868 fi
6869 echo "debug symbols             ${debug-no}"
6870 echo "strip symbols             ${stripping-no}"
6871 echo "optimize for size         ${small-no}"
6872 echo "optimizations             ${optimizations-no}"
6873 echo "static                    ${static-no}"
6874 echo "shared                    ${shared-no}"
6875 echo "postprocessing support    ${postproc-no}"
6876 echo "network support           ${network-no}"
6877 echo "threading support         ${thread_type-no}"
6878 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6879 echo "texi2html enabled         ${texi2html-no}"
6880 echo "perl enabled              ${perl-no}"
6881 echo "pod2man enabled           ${pod2man-no}"
6882 echo "makeinfo enabled          ${makeinfo-no}"
6883 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6884 test -n "$random_seed" &&
6885     echo "random seed               ${random_seed}"
6886 echo
6887
6888 echo "External libraries:"
6889 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6890 echo
6891
6892 echo "External libraries providing hardware acceleration:"
6893 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6894 echo
6895
6896 echo "Libraries:"
6897 print_enabled '' $LIBRARY_LIST | print_in_columns
6898 echo
6899
6900 echo "Programs:"
6901 print_enabled '' $PROGRAM_LIST | print_in_columns
6902 echo
6903
6904 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6905     echo "Enabled ${type}s:"
6906     eval list=\$$(toupper $type)_LIST
6907     print_enabled '_*' $list | print_in_columns
6908     echo
6909 done
6910
6911 if test -n "$ignore_tests"; then
6912     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6913     echo "Ignored FATE tests:"
6914     echo $ignore_tests | print_in_columns
6915     echo
6916 fi
6917
6918 echo "License: $license"
6919
6920 fi # test "$quiet" != "yes"
6921
6922 if test -n "$WARNINGS"; then
6923     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6924     enabled fatal_warnings && exit 1
6925 fi
6926
6927 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6928
6929 esc(){
6930     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6931 }
6932
6933 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6934
6935 enabled stripping || strip="echo skipping strip"
6936 enabled stripping || striptype=""
6937
6938 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6939
6940 cat > ffbuild/config.mak <<EOF
6941 # Automatically generated by configure - do not modify!
6942 ifndef FFMPEG_CONFIG_MAK
6943 FFMPEG_CONFIG_MAK=1
6944 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6945 prefix=$prefix
6946 LIBDIR=\$(DESTDIR)$libdir
6947 SHLIBDIR=\$(DESTDIR)$shlibdir
6948 INCDIR=\$(DESTDIR)$incdir
6949 BINDIR=\$(DESTDIR)$bindir
6950 DATADIR=\$(DESTDIR)$datadir
6951 DOCDIR=\$(DESTDIR)$docdir
6952 MANDIR=\$(DESTDIR)$mandir
6953 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6954 INSTALL_NAME_DIR=$install_name_dir
6955 SRC_PATH=$source_path
6956 SRC_LINK=$source_link
6957 ifndef MAIN_MAKEFILE
6958 SRC_PATH:=\$(SRC_PATH:.%=..%)
6959 endif
6960 CC_IDENT=$cc_ident
6961 ARCH=$arch
6962 INTRINSICS=$intrinsics
6963 EXTERN_PREFIX=$extern_prefix
6964 CC=$cc
6965 CXX=$cxx
6966 AS=$as
6967 OBJCC=$objcc
6968 LD=$ld
6969 DEPCC=$dep_cc
6970 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6971 DEPAS=$as
6972 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6973 X86ASM=$x86asmexe
6974 DEPX86ASM=$x86asmexe
6975 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6976 AR=$ar
6977 ARFLAGS=$arflags
6978 AR_O=$ar_o
6979 AR_CMD=$ar
6980 NM_CMD=$nm
6981 RANLIB=$ranlib
6982 STRIP=$strip
6983 STRIPTYPE=$striptype
6984 NVCC=$nvcc
6985 CP=cp -p
6986 LN_S=$ln_s
6987 CPPFLAGS=$CPPFLAGS
6988 CFLAGS=$CFLAGS
6989 CXXFLAGS=$CXXFLAGS
6990 OBJCFLAGS=$OBJCFLAGS
6991 ASFLAGS=$ASFLAGS
6992 NVCCFLAGS=$nvccflags
6993 AS_C=$AS_C
6994 AS_O=$AS_O
6995 OBJCC_C=$OBJCC_C
6996 OBJCC_E=$OBJCC_E
6997 OBJCC_O=$OBJCC_O
6998 CC_C=$CC_C
6999 CC_E=$CC_E
7000 CC_O=$CC_O
7001 CXX_C=$CXX_C
7002 CXX_O=$CXX_O
7003 NVCC_C=$NVCC_C
7004 NVCC_O=$NVCC_O
7005 LD_O=$LD_O
7006 X86ASM_O=$X86ASM_O
7007 LD_LIB=$LD_LIB
7008 LD_PATH=$LD_PATH
7009 DLLTOOL=$dlltool
7010 WINDRES=$windres
7011 DEPWINDRES=$dep_cc
7012 DOXYGEN=$doxygen
7013 LDFLAGS=$LDFLAGS
7014 LDEXEFLAGS=$LDEXEFLAGS
7015 LDSOFLAGS=$LDSOFLAGS
7016 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7017 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7018 X86ASMFLAGS=$X86ASMFLAGS
7019 BUILDSUF=$build_suffix
7020 PROGSSUF=$progs_suffix
7021 FULLNAME=$FULLNAME
7022 LIBPREF=$LIBPREF
7023 LIBSUF=$LIBSUF
7024 LIBNAME=$LIBNAME
7025 SLIBPREF=$SLIBPREF
7026 SLIBSUF=$SLIBSUF
7027 EXESUF=$EXESUF
7028 EXTRA_VERSION=$extra_version
7029 CCDEP=$CCDEP
7030 CXXDEP=$CXXDEP
7031 CCDEP_FLAGS=$CCDEP_FLAGS
7032 ASDEP=$ASDEP
7033 ASDEP_FLAGS=$ASDEP_FLAGS
7034 X86ASMDEP=$X86ASMDEP
7035 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7036 CC_DEPFLAGS=$CC_DEPFLAGS
7037 AS_DEPFLAGS=$AS_DEPFLAGS
7038 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7039 HOSTCC=$host_cc
7040 HOSTLD=$host_ld
7041 HOSTCFLAGS=$host_cflags
7042 HOSTCPPFLAGS=$host_cppflags
7043 HOSTEXESUF=$HOSTEXESUF
7044 HOSTLDFLAGS=$host_ldflags
7045 HOSTEXTRALIBS=$host_extralibs
7046 DEPHOSTCC=$host_cc
7047 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7048 HOSTCCDEP=$HOSTCCDEP
7049 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7050 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7051 HOSTCC_C=$HOSTCC_C
7052 HOSTCC_O=$HOSTCC_O
7053 HOSTLD_O=$HOSTLD_O
7054 TARGET_EXEC=$target_exec $target_exec_args
7055 TARGET_PATH=$target_path
7056 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7057 CFLAGS-ffplay=${sdl2_cflags}
7058 CFLAGS_HEADERS=$CFLAGS_HEADERS
7059 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7060 EXTRALIBS=$extralibs
7061 COMPAT_OBJS=$compat_objs
7062 INSTALL=$install
7063 LIBTARGET=${LIBTARGET}
7064 SLIBNAME=${SLIBNAME}
7065 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7066 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7067 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7068 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7069 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7070 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7071 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7072 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7073 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7074 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7075 NOREDZONE_FLAGS=$noredzone_flags
7076 LIBFUZZER_PATH=$libfuzzer_path
7077 IGNORE_TESTS=$ignore_tests
7078 EOF
7079
7080 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7081
7082 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7083     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7084 done
7085
7086 cat > $TMPH <<EOF
7087 /* Automatically generated by configure - do not modify! */
7088 #ifndef FFMPEG_CONFIG_H
7089 #define FFMPEG_CONFIG_H
7090 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7091 #define FFMPEG_LICENSE "$(c_escape $license)"
7092 #define CONFIG_THIS_YEAR 2018
7093 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7094 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7095 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7096 #define av_restrict $restrict_keyword
7097 #define EXTERN_PREFIX "${extern_prefix}"
7098 #define EXTERN_ASM ${extern_prefix}
7099 #define BUILDSUF "$build_suffix"
7100 #define SLIBSUF "$SLIBSUF"
7101 #define HAVE_MMX2 HAVE_MMXEXT
7102 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7103 EOF
7104
7105 test -n "$assert_level" &&
7106     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7107
7108 test -n "$malloc_prefix" &&
7109     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7110
7111 if enabled x86asm; then
7112     append config_files $TMPASM
7113     cat > $TMPASM <<EOF
7114 ; Automatically generated by configure - do not modify!
7115 EOF
7116 fi
7117
7118 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7119
7120
7121 mkdir -p doc
7122 mkdir -p tests
7123 mkdir -p tests/api
7124 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7125
7126 print_config ARCH_   "$config_files" $ARCH_LIST
7127 print_config HAVE_   "$config_files" $HAVE_LIST
7128 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7129                                      $CONFIG_EXTRA      \
7130                                      $ALL_COMPONENTS    \
7131
7132 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7133 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7134
7135 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7136 cp_if_changed $TMPH config.h
7137 touch ffbuild/.config
7138
7139 enabled x86asm && cp_if_changed $TMPASM config.asm
7140
7141 cat > $TMPH <<EOF
7142 /* Generated by ffmpeg configure */
7143 #ifndef AVUTIL_AVCONFIG_H
7144 #define AVUTIL_AVCONFIG_H
7145 EOF
7146
7147 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7148
7149 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7150
7151 cp_if_changed $TMPH libavutil/avconfig.h
7152
7153 # generate the lists of enabled components
7154 print_enabled_components(){
7155     file=$1
7156     struct_name=$2
7157     name=$3
7158     shift 3
7159     echo "static const $struct_name * const $name[] = {" > $TMPH
7160     for c in $*; do
7161         if enabled $c; then
7162             case $name in
7163                 indev_list)
7164                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7165                 ;;
7166                 outdev_list)
7167                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7168                 ;;
7169             esac
7170             printf "    &ff_%s,\n" $c >> $TMPH
7171         fi
7172     done
7173     echo "    NULL };" >> $TMPH
7174     cp_if_changed $TMPH $file
7175 }
7176
7177 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7178 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7179 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7180 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7181 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7182 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7183 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7184 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7185
7186 # Settings for pkg-config files
7187
7188 cat > $TMPH <<EOF
7189 # Automatically generated by configure - do not modify!
7190 shared=$shared
7191 build_suffix=$build_suffix
7192 prefix=$prefix
7193 libdir=$libdir
7194 incdir=$incdir
7195 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7196 source_path=${source_path}
7197 LIBPREF=${LIBPREF}
7198 LIBSUF=${LIBSUF}
7199 extralibs_avutil="$avutil_extralibs"
7200 extralibs_avcodec="$avcodec_extralibs"
7201 extralibs_avformat="$avformat_extralibs"
7202 extralibs_avdevice="$avdevice_extralibs"
7203 extralibs_avfilter="$avfilter_extralibs"
7204 extralibs_avresample="$avresample_extralibs"
7205 extralibs_postproc="$postproc_extralibs"
7206 extralibs_swscale="$swscale_extralibs"
7207 extralibs_swresample="$swresample_extralibs"
7208 EOF
7209
7210 for lib in $LIBRARY_LIST; do
7211     lib_deps="$(eval echo \$${lib}_deps)"
7212     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7213 done
7214
7215 cp_if_changed $TMPH ffbuild/config.sh