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-libass          enable libass subtitles rendering,
 221                            needed for subtitles and ass filter [no]
 222   --enable-libbluray       enable BluRay reading using libbluray [no]
 223   --enable-libbs2b         enable bs2b DSP library [no]
 224   --enable-libcaca         enable textual display using libcaca [no]
 225   --enable-libcelt         enable CELT decoding via libcelt [no]
 226   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 227   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 228                            and libraw1394 [no]
 229   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 230   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 231   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 232   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 233   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 234   --enable-libgme          enable Game Music Emu via libgme [no]
 235   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 236   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 237   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 238   --enable-libjack         enable JACK audio sound server [no]
 239   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 240   --enable-libmodplug      enable ModPlug via libmodplug [no]
 241   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 242   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 243   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 244   --enable-libopencv       enable video filtering via libopencv [no]
 245   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 246   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 247   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 248   --enable-libopus         enable Opus de/encoding via libopus [no]
 249   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 250   --enable-librsvg         enable SVG rasterization via librsvg [no]
 251   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 252   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 253   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 254   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 255   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 256   --enable-libsoxr         enable Include libsoxr resampling [no]
 257   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 258   --enable-libssh          enable SFTP protocol via libssh [no]
 259   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 260   --enable-libtheora       enable Theora encoding via libtheora [no]
 261   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 262                            if openssl or gnutls is not used [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --enable-lv2             enable LV2 audio filtering [no]
 287   --disable-lzma           disable lzma [autodetect]
 288   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 289   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 290   --enable-mediacodec      enable Android MediaCodec support [no]
 291   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 292   --enable-openal          enable OpenAL 1.1 capture support [no]
 293   --enable-opencl          enable OpenCL processing [no]
 294   --enable-opengl          enable OpenGL rendering [no]
 295   --enable-openssl         enable openssl, needed for https support
 296                            if gnutls or libtls is not used [no]
 297   --disable-sndio          disable sndio support [autodetect]
 298   --disable-schannel       disable SChannel SSP, needed for TLS support on
 299                            Windows if openssl and gnutls are not used [autodetect]
 300   --disable-sdl2           disable sdl2 [autodetect]
 301   --disable-securetransport disable Secure Transport, needed for TLS support
 302                            on OSX if openssl and gnutls are not used [autodetect]
 303   --disable-xlib           disable xlib [autodetect]
 304   --disable-zlib           disable zlib [autodetect]
 305
 306   The following libraries provide various hardware acceleration features:
 307   --disable-amf            disable AMF video encoding code [autodetect]
 308   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 309   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 310   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 311   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 312   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 313   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 314   --enable-libdrm          enable DRM code (Linux) [no]
 315   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 316   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 317   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 318   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 319   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 320   --enable-omx             enable OpenMAX IL code [no]
 321   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 322   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 323   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 324   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 325   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 326   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 327
 328 Toolchain options:
 329   --arch=ARCH              select architecture [$arch]
 330   --cpu=CPU                select the minimum required CPU (affects
 331                            instruction selection, may crash on older CPUs)
 332   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 333   --progs-suffix=SUFFIX    program name suffix []
 334   --enable-cross-compile   assume a cross-compiler is used
 335   --sysroot=PATH           root of cross-build tree
 336   --sysinclude=PATH        location of cross-build system headers
 337   --target-os=OS           compiler targets OS [$target_os]
 338   --target-exec=CMD        command to run executables on target
 339   --target-path=DIR        path to view of build directory on target
 340   --target-samples=DIR     path to samples directory on target
 341   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 342   --toolchain=NAME         set tool defaults according to NAME
 343   --nm=NM                  use nm tool NM [$nm_default]
 344   --ar=AR                  use archive tool AR [$ar_default]
 345   --as=AS                  use assembler AS [$as_default]
 346   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 347   --strip=STRIP            use strip tool STRIP [$strip_default]
 348   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 349   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 350   --cc=CC                  use C compiler CC [$cc_default]
 351   --cxx=CXX                use C compiler CXX [$cxx_default]
 352   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 353   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 354   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 355   --ld=LD                  use linker LD [$ld_default]
 356   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 357   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 358   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 359   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 360   --host-cc=HOSTCC         use host C compiler HOSTCC
 361   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 362   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 363   --host-ld=HOSTLD         use host linker HOSTLD
 364   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 365   --host-libs=HLIBS        use libs HLIBS when linking for host
 366   --host-os=OS             compiler host OS [$target_os]
 367   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 368   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 369   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 370   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 371   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 372   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 373   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 374   --extra-version=STRING   version string suffix []
 375   --optflags=OPTFLAGS      override optimization-related compiler flags
 376   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 377   --build-suffix=SUFFIX    library name suffix []
 378   --enable-pic             build position-independent code
 379   --enable-thumb           compile for Thumb instruction set
 380   --enable-lto             use link-time optimization
 381   --env="ENV=override"     override the environment variables
 382
 383 Advanced options (experts only):
 384   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 385   --custom-allocator=NAME  use a supported custom allocator
 386   --disable-symver         disable symbol versioning
 387   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 388   --disable-safe-bitstream-reader
 389                            disable buffer boundary checking in bitreaders
 390                            (faster, but may crash)
 391   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 392
 393 Optimization options (experts only):
 394   --disable-asm            disable all assembly optimizations
 395   --disable-altivec        disable AltiVec optimizations
 396   --disable-vsx            disable VSX optimizations
 397   --disable-power8         disable POWER8 optimizations
 398   --disable-amd3dnow       disable 3DNow! optimizations
 399   --disable-amd3dnowext    disable 3DNow! extended optimizations
 400   --disable-mmx            disable MMX optimizations
 401   --disable-mmxext         disable MMXEXT optimizations
 402   --disable-sse            disable SSE optimizations
 403   --disable-sse2           disable SSE2 optimizations
 404   --disable-sse3           disable SSE3 optimizations
 405   --disable-ssse3          disable SSSE3 optimizations
 406   --disable-sse4           disable SSE4 optimizations
 407   --disable-sse42          disable SSE4.2 optimizations
 408   --disable-avx            disable AVX optimizations
 409   --disable-xop            disable XOP optimizations
 410   --disable-fma3           disable FMA3 optimizations
 411   --disable-fma4           disable FMA4 optimizations
 412   --disable-avx2           disable AVX2 optimizations
 413   --disable-avx512         disable AVX-512 optimizations
 414   --disable-aesni          disable AESNI optimizations
 415   --disable-armv5te        disable armv5te optimizations
 416   --disable-armv6          disable armv6 optimizations
 417   --disable-armv6t2        disable armv6t2 optimizations
 418   --disable-vfp            disable VFP optimizations
 419   --disable-neon           disable NEON optimizations
 420   --disable-inline-asm     disable use of inline assembly
 421   --disable-x86asm         disable use of standalone x86 assembly
 422   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 423   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 424   --disable-msa            disable MSA optimizations
 425   --disable-mipsfpu        disable floating point MIPS optimizations
 426   --disable-mmi            disable Loongson SIMD optimizations
 427   --disable-fast-unaligned consider unaligned accesses slow
 428
 429 Developer options (useful when working on FFmpeg itself):
 430   --disable-debug          disable debugging symbols
 431   --enable-debug=LEVEL     set the debug level [$debuglevel]
 432   --disable-optimizations  disable compiler optimizations
 433   --enable-extra-warnings  enable more compiler warnings
 434   --disable-stripping      disable stripping of executables and shared libraries
 435   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 436                            2 causes a slowdown at runtime.
 437   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 438   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 439                            leaks and errors, using the specified valgrind binary.
 440                            Cannot be combined with --target-exec
 441   --enable-ftrapv          Trap arithmetic overflows
 442   --samples=PATH           location of test samples for FATE, if not set use
 443                            \$FATE_SAMPLES at make invocation time.
 444   --enable-neon-clobber-test check NEON registers for clobbering (should be
 445                            used only for debugging purposes)
 446   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 447                            should be used only for debugging purposes)
 448   --enable-random          randomly enable/disable components
 449   --disable-random
 450   --enable-random=LIST     randomly enable/disable specific components or
 451   --disable-random=LIST    component groups. LIST is a comma-separated list
 452                            of NAME[:PROB] entries where NAME is a component
 453                            (group) and PROB the probability associated with
 454                            NAME (default 0.5).
 455   --random-seed=VALUE      seed value for --enable/disable-random
 456   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 457                            (only applies to --disable-optimizations builds)
 458   --enable-osfuzz          Enable building fuzzer tool
 459   --libfuzzer=PATH         path to libfuzzer
 460   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 461                            in the name) of tests whose result is ignored
 462   --enable-linux-perf      enable Linux Performance Monitor API
 463
 464 NOTE: Object files are built at the place where configure is launched.
 465 EOF
 466   exit 0
 467 }
 468
 469 if test -t 1 && which tput >/dev/null 2>&1; then
 470     ncolors=$(tput colors)
 471     if test -n "$ncolors" && test $ncolors -ge 8; then
 472         bold_color=$(tput bold)
 473         warn_color=$(tput setaf 3)
 474         error_color=$(tput setaf 1)
 475         reset_color=$(tput sgr0)
 476     fi
 477     # 72 used instead of 80 since that's the default of pr
 478     ncols=$(tput cols)
 479 fi
 480 : ${ncols:=72}
 481
 482 log(){
 483     echo "$@" >> $logfile
 484 }
 485
 486 log_file(){
 487     log BEGIN $1
 488     pr -n -t $1 >> $logfile
 489     log END $1
 490 }
 491
 492 warn(){
 493     log "WARNING: $*"
 494     WARNINGS="${WARNINGS}WARNING: $*\n"
 495 }
 496
 497 die(){
 498     log "$@"
 499     echo "$error_color$bold_color$@$reset_color"
 500     cat <<EOF
 501
 502 If you think configure made a mistake, make sure you are using the latest
 503 version from Git.  If the latest version fails, report the problem to the
 504 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 505 EOF
 506     if disabled logging; then
 507         cat <<EOF
 508 Rerun configure with logging enabled (do not use --disable-logging), and
 509 include the log this produces with your report.
 510 EOF
 511     else
 512         cat <<EOF
 513 Include the log file "$logfile" produced by configure as this will help
 514 solve the problem.
 515 EOF
 516     fi
 517     exit 1
 518 }
 519
 520 # Avoid locale weirdness, besides we really just want to translate ASCII.
 521 toupper(){
 522     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 523 }
 524
 525 tolower(){
 526     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 527 }
 528
 529 c_escape(){
 530     echo "$*" | sed 's/["\\]/\\\0/g'
 531 }
 532
 533 sh_quote(){
 534     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 535     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 536     echo "$v"
 537 }
 538
 539 cleanws(){
 540     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 541 }
 542
 543 filter(){
 544     pat=$1
 545     shift
 546     for v; do
 547         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 548     done
 549 }
 550
 551 filter_out(){
 552     pat=$1
 553     shift
 554     for v; do
 555         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 556     done
 557 }
 558
 559 map(){
 560     m=$1
 561     shift
 562     for v; do eval $m; done
 563 }
 564
 565 add_suffix(){
 566     suffix=$1
 567     shift
 568     for v; do echo ${v}${suffix}; done
 569 }
 570
 571 set_all(){
 572     value=$1
 573     shift
 574     for var in $*; do
 575         eval $var=$value
 576     done
 577 }
 578
 579 set_weak(){
 580     value=$1
 581     shift
 582     for var; do
 583         eval : \${$var:=$value}
 584     done
 585 }
 586
 587 sanitize_var_name(){
 588     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 589 }
 590
 591 set_sanitized(){
 592     var=$1
 593     shift
 594     eval $(sanitize_var_name "$var")='$*'
 595 }
 596
 597 get_sanitized(){
 598     eval echo \$$(sanitize_var_name "$1")
 599 }
 600
 601 pushvar(){
 602     for pvar in $*; do
 603         eval level=\${${pvar}_level:=0}
 604         eval ${pvar}_${level}="\$$pvar"
 605         eval ${pvar}_level=$(($level+1))
 606     done
 607 }
 608
 609 popvar(){
 610     for pvar in $*; do
 611         eval level=\${${pvar}_level:-0}
 612         test $level = 0 && continue
 613         eval level=$(($level-1))
 614         eval $pvar="\${${pvar}_${level}}"
 615         eval ${pvar}_level=$level
 616         eval unset ${pvar}_${level}
 617     done
 618 }
 619
 620 request(){
 621     for var in $*; do
 622         eval ${var}_requested=yes
 623         eval $var=
 624     done
 625 }
 626
 627 enable(){
 628     set_all yes $*
 629 }
 630
 631 disable(){
 632     set_all no $*
 633 }
 634
 635 enable_weak(){
 636     set_weak yes $*
 637 }
 638
 639 disable_weak(){
 640     set_weak no $*
 641 }
 642
 643 enable_sanitized(){
 644     for var; do
 645         enable $(sanitize_var_name $var)
 646     done
 647 }
 648
 649 disable_sanitized(){
 650     for var; do
 651         disable $(sanitize_var_name $var)
 652     done
 653 }
 654
 655 do_enable_deep(){
 656     for var; do
 657         enabled $var && continue
 658         eval sel="\$${var}_select"
 659         eval sgs="\$${var}_suggest"
 660         pushvar var sgs
 661         enable_deep $sel
 662         popvar sgs
 663         enable_deep_weak $sgs
 664         popvar var
 665     done
 666 }
 667
 668 enable_deep(){
 669     do_enable_deep $*
 670     enable $*
 671 }
 672
 673 enable_deep_weak(){
 674     for var; do
 675         disabled $var && continue
 676         pushvar var
 677         do_enable_deep $var
 678         popvar var
 679         enable_weak $var
 680     done
 681 }
 682
 683 requested(){
 684     test "${1#!}" = "$1" && op="=" || op="!="
 685     eval test "x\$${1#!}_requested" $op "xyes"
 686 }
 687
 688 enabled(){
 689     test "${1#!}" = "$1" && op="=" || op="!="
 690     eval test "x\$${1#!}" $op "xyes"
 691 }
 692
 693 disabled(){
 694     test "${1#!}" = "$1" && op="=" || op="!="
 695     eval test "x\$${1#!}" $op "xno"
 696 }
 697
 698 enabled_all(){
 699     for opt; do
 700         enabled $opt || return 1
 701     done
 702 }
 703
 704 disabled_all(){
 705     for opt; do
 706         disabled $opt || return 1
 707     done
 708 }
 709
 710 enabled_any(){
 711     for opt; do
 712         enabled $opt && return 0
 713     done
 714 }
 715
 716 disabled_any(){
 717     for opt; do
 718         disabled $opt && return 0
 719     done
 720     return 1
 721 }
 722
 723 set_default(){
 724     for opt; do
 725         eval : \${$opt:=\$${opt}_default}
 726     done
 727 }
 728
 729 is_in(){
 730     value=$1
 731     shift
 732     for var in $*; do
 733         [ $var = $value ] && return 0
 734     done
 735     return 1
 736 }
 737
 738 check_deps(){
 739     for cfg; do
 740         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 741         disabled ${cfg}_checking && continue
 742         enable ${cfg}_checking
 743
 744         eval dep_all="\$${cfg}_deps"
 745         eval dep_any="\$${cfg}_deps_any"
 746         eval dep_con="\$${cfg}_conflict"
 747         eval dep_sel="\$${cfg}_select"
 748         eval dep_sgs="\$${cfg}_suggest"
 749         eval dep_ifa="\$${cfg}_if"
 750         eval dep_ifn="\$${cfg}_if_any"
 751
 752         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 753         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 754         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 755
 756         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 757         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 758         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 759         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 760         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 761         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 762
 763         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 764
 765         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 766             # filter out library deps, these do not belong in extralibs
 767             is_in $dep $LIBRARY_LIST && continue
 768             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 769         done
 770
 771         disable ${cfg}_checking
 772     done
 773 }
 774
 775 print_config(){
 776     pfx=$1
 777     files=$2
 778     shift 2
 779     map 'eval echo "$v \${$v:-no}"' "$@" |
 780     awk "BEGIN { split(\"$files\", files) }
 781         {
 782             c = \"$pfx\" toupper(\$1);
 783             v = \$2;
 784             sub(/yes/, 1, v);
 785             sub(/no/,  0, v);
 786             for (f in files) {
 787                 file = files[f];
 788                 if (file ~ /\\.h\$/) {
 789                     printf(\"#define %s %d\\n\", c, v) >>file;
 790                 } else if (file ~ /\\.asm\$/) {
 791                     printf(\"%%define %s %d\\n\", c, v) >>file;
 792                 } else if (file ~ /\\.mak\$/) {
 793                     n = -v ? \"\" : \"!\";
 794                     printf(\"%s%s=yes\\n\", n, c) >>file;
 795                 } else if (file ~ /\\.texi\$/) {
 796                     pre = -v ? \"\" : \"@c \";
 797                     yesno = \$2;
 798                     c2 = tolower(c);
 799                     gsub(/_/, \"-\", c2);
 800                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 801                 }
 802             }
 803         }"
 804 }
 805
 806 print_enabled(){
 807     suf=$1
 808     shift
 809     for v; do
 810         enabled $v && printf "%s\n" ${v%$suf}
 811     done
 812 }
 813
 814 append(){
 815     var=$1
 816     shift
 817     eval "$var=\"\$$var $*\""
 818 }
 819
 820 prepend(){
 821     var=$1
 822     shift
 823     eval "$var=\"$* \$$var\""
 824 }
 825
 826 unique(){
 827     var=$1
 828     uniq_list=""
 829     for tok in $(eval echo \$$var); do
 830         uniq_list="$(filter_out $tok $uniq_list) $tok"
 831     done
 832     eval "$var=\"${uniq_list}\""
 833 }
 834
 835 resolve(){
 836     var=$1
 837     tmpvar=
 838     for entry in $(eval echo \$$var); do
 839         tmpvar="$tmpvar $(eval echo \$${entry})"
 840     done
 841     eval "$var=\"${tmpvar}\""
 842 }
 843
 844 add_cppflags(){
 845     append CPPFLAGS "$@"
 846 }
 847
 848 add_cflags(){
 849     append CFLAGS $($cflags_filter "$@")
 850 }
 851
 852 add_cflags_headers(){
 853     append CFLAGS_HEADERS $($cflags_filter "$@")
 854 }
 855
 856 add_cxxflags(){
 857     append CXXFLAGS $($cflags_filter "$@")
 858 }
 859
 860 add_asflags(){
 861     append ASFLAGS $($asflags_filter "$@")
 862 }
 863
 864 add_objcflags(){
 865     append OBJCFLAGS $($objcflags_filter "$@")
 866 }
 867
 868 add_ldflags(){
 869     append LDFLAGS $($ldflags_filter "$@")
 870 }
 871
 872 add_ldexeflags(){
 873     append LDEXEFLAGS $($ldflags_filter "$@")
 874 }
 875
 876 add_ldsoflags(){
 877     append LDSOFLAGS $($ldflags_filter "$@")
 878 }
 879
 880 add_stripflags(){
 881     append ASMSTRIPFLAGS "$@"
 882 }
 883
 884 add_extralibs(){
 885     prepend extralibs $($ldflags_filter "$@")
 886 }
 887
 888 add_host_cppflags(){
 889     append host_cppflags "$@"
 890 }
 891
 892 add_host_cflags(){
 893     append host_cflags $($host_cflags_filter "$@")
 894 }
 895
 896 add_host_ldflags(){
 897     append host_ldflags $($host_ldflags_filter "$@")
 898 }
 899
 900 add_compat(){
 901     append compat_objs $1
 902     shift
 903     map 'add_cppflags -D$v' "$@"
 904 }
 905
 906 check_cmd(){
 907     log "$@"
 908     "$@" >> $logfile 2>&1
 909 }
 910
 911 check_stat(){
 912     log check_stat "$@"
 913     stat "$1" >> $logfile 2>&1
 914 }
 915
 916 cc_o(){
 917     eval printf '%s\\n' $CC_O
 918 }
 919
 920 cc_e(){
 921     eval printf '%s\\n' $CC_E
 922 }
 923
 924 check_cc(){
 925     log check_cc "$@"
 926     cat > $TMPC
 927     log_file $TMPC
 928     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 929 }
 930
 931 check_cxx(){
 932     log check_cxx "$@"
 933     cat > $TMPCPP
 934     log_file $TMPCPP
 935     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 936 }
 937
 938 check_objcc(){
 939     log check_objcc "$@"
 940     cat > $TMPM
 941     log_file $TMPM
 942     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 943 }
 944
 945 check_cpp(){
 946     log check_cpp "$@"
 947     cat > $TMPC
 948     log_file $TMPC
 949     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 950 }
 951
 952 as_o(){
 953     eval printf '%s\\n' $AS_O
 954 }
 955
 956 check_as(){
 957     log check_as "$@"
 958     cat > $TMPS
 959     log_file $TMPS
 960     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 961 }
 962
 963 check_inline_asm(){
 964     log check_inline_asm "$@"
 965     name="$1"
 966     code="$2"
 967     shift 2
 968     disable $name
 969     check_cc "$@" <<EOF && enable $name
 970 void foo(void){ __asm__ volatile($code); }
 971 EOF
 972 }
 973
 974 check_inline_asm_flags(){
 975     log check_inline_asm_flags "$@"
 976     name="$1"
 977     code="$2"
 978     flags=''
 979     shift 2
 980     while [ "$1" != "" ]; do
 981       append flags $1
 982       shift
 983     done;
 984     disable $name
 985     cat > $TMPC <<EOF
 986 void foo(void){ __asm__ volatile($code); }
 987 EOF
 988     log_file $TMPC
 989     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 990     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 991 }
 992
 993 check_insn(){
 994     log check_insn "$@"
 995     check_inline_asm ${1}_inline "\"$2\""
 996     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 997 }
 998
 999 check_x86asm(){
1000     log check_x86asm "$@"
1001     echo "$1" > $TMPS
1002     log_file $TMPS
1003     shift 1
1004     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1005 }
1006
1007 ld_o(){
1008     eval printf '%s\\n' $LD_O
1009 }
1010
1011 check_ld(){
1012     log check_ld "$@"
1013     type=$1
1014     shift 1
1015     flags=$(filter_out '-l*|*.so' $@)
1016     libs=$(filter '-l*|*.so' $@)
1017     check_$type $($cflags_filter $flags) || return
1018     flags=$($ldflags_filter $flags)
1019     libs=$($ldflags_filter $libs)
1020     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1021 }
1022
1023 print_include(){
1024     hdr=$1
1025     test "${hdr%.h}" = "${hdr}" &&
1026         echo "#include $hdr"    ||
1027         echo "#include <$hdr>"
1028 }
1029
1030 check_code(){
1031     log check_code "$@"
1032     check=$1
1033     headers=$2
1034     code=$3
1035     shift 3
1036     {
1037         for hdr in $headers; do
1038             print_include $hdr
1039         done
1040         echo "int main(void) { $code; return 0; }"
1041     } | check_$check "$@"
1042 }
1043
1044 check_cppflags(){
1045     log check_cppflags "$@"
1046     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1047 #include <stdlib.h>
1048 EOF
1049 }
1050
1051 test_cflags(){
1052     log test_cflags "$@"
1053     set -- $($cflags_filter "$@")
1054     check_cc "$@" <<EOF
1055 int x;
1056 EOF
1057 }
1058
1059 check_cflags(){
1060     log check_cflags "$@"
1061     test_cflags "$@" && add_cflags "$@"
1062 }
1063
1064 check_cxxflags(){
1065     log check_cxxflags "$@"
1066     set -- $($cflags_filter "$@")
1067     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1068 int x;
1069 EOF
1070 }
1071
1072 test_objcflags(){
1073     log test_objcflags "$@"
1074     set -- $($objcflags_filter "$@")
1075     check_objcc "$@" <<EOF
1076 int x;
1077 EOF
1078 }
1079
1080 check_objcflags(){
1081     log check_objcflags "$@"
1082     test_objcflags "$@" && add_objcflags "$@"
1083 }
1084
1085 test_ldflags(){
1086     log test_ldflags "$@"
1087     set -- $($ldflags_filter "$@")
1088     check_ld "cc" "$@" <<EOF
1089 int main(void){ return 0; }
1090 EOF
1091 }
1092
1093 check_ldflags(){
1094     log check_ldflags "$@"
1095     test_ldflags "$@" && add_ldflags "$@"
1096 }
1097
1098 test_stripflags(){
1099     log test_stripflags "$@"
1100     # call check_cc to get a fresh TMPO
1101     check_cc <<EOF
1102 int main(void) { return 0; }
1103 EOF
1104     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1105 }
1106
1107 check_stripflags(){
1108     log check_stripflags "$@"
1109     test_stripflags "$@" && add_stripflags "$@"
1110 }
1111
1112 check_header(){
1113     log check_header "$@"
1114     headers=$1
1115     shift
1116     disable_sanitized $headers
1117     {
1118         for hdr in $headers; do
1119             print_include $hdr
1120         done
1121         echo "int x;"
1122     } | check_cpp "$@" && enable_sanitized $headers
1123 }
1124
1125 check_header_objcc(){
1126     log check_header_objcc "$@"
1127     rm -f -- "$TMPO"
1128     header=$1
1129     shift
1130     disable_sanitized $header
1131     {
1132        echo "#include <$header>"
1133        echo "int main(void) { return 0; }"
1134     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1135 }
1136
1137 check_apple_framework(){
1138     log check_apple_framework "$@"
1139     framework="$1"
1140     name="$(tolower $framework)"
1141     header="${framework}/${framework}.h"
1142     disable $name
1143     check_header_objcc $header &&
1144         enable $name && eval ${name}_extralibs='"-framework $framework"'
1145 }
1146
1147 check_func(){
1148     log check_func "$@"
1149     func=$1
1150     shift
1151     disable $func
1152     check_ld "cc" "$@" <<EOF && enable $func
1153 extern int $func();
1154 int main(void){ $func(); }
1155 EOF
1156 }
1157
1158 check_complexfunc(){
1159     log check_complexfunc "$@"
1160     func=$1
1161     narg=$2
1162     shift 2
1163     test $narg = 2 && args="f, g" || args="f * I"
1164     disable $func
1165     check_ld "cc" "$@" <<EOF && enable $func
1166 #include <complex.h>
1167 #include <math.h>
1168 float foo(complex float f, complex float g) { return $func($args); }
1169 int main(void){ return (int) foo; }
1170 EOF
1171 }
1172
1173 check_mathfunc(){
1174     log check_mathfunc "$@"
1175     func=$1
1176     narg=$2
1177     shift 2
1178     test $narg = 2 && args="f, g" || args="f"
1179     disable $func
1180     check_ld "cc" "$@" <<EOF && enable $func
1181 #include <math.h>
1182 float foo(float f, float g) { return $func($args); }
1183 int main(void){ return (int) foo; }
1184 EOF
1185 }
1186
1187 check_func_headers(){
1188     log check_func_headers "$@"
1189     headers=$1
1190     funcs=$2
1191     shift 2
1192     {
1193         for hdr in $headers; do
1194             print_include $hdr
1195         done
1196         echo "#include <stdint.h>"
1197         for func in $funcs; do
1198             echo "long check_$func(void) { return (long) $func; }"
1199         done
1200         echo "int main(void) { int ret = 0;"
1201         # LTO could optimize out the test functions without this
1202         for func in $funcs; do
1203             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1204         done
1205         echo "return ret; }"
1206     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1207 }
1208
1209 check_class_headers_cpp(){
1210     log check_class_headers_cpp "$@"
1211     headers=$1
1212     classes=$2
1213     shift 2
1214     {
1215         for hdr in $headers; do
1216             echo "#include <$hdr>"
1217         done
1218         echo "int main(void) { "
1219         i=1
1220         for class in $classes; do
1221             echo "$class obj$i;"
1222             i=$(expr $i + 1)
1223         done
1224         echo "return 0; }"
1225     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1226 }
1227
1228 check_cpp_condition(){
1229     log check_cpp_condition "$@"
1230     header=$1
1231     condition=$2
1232     shift 2
1233     check_cpp "$@" <<EOF
1234 #include <$header>
1235 #if !($condition)
1236 #error "unsatisfied condition: $condition"
1237 #endif
1238 EOF
1239 }
1240
1241 test_cflags_cc(){
1242     log test_cflags_cc "$@"
1243     flags=$1
1244     header=$2
1245     condition=$3
1246     shift 3
1247     set -- $($cflags_filter "$flags")
1248     check_cc "$@" <<EOF
1249 #include <$header>
1250 #if !($condition)
1251 #error "unsatisfied condition: $condition"
1252 #endif
1253 EOF
1254 }
1255
1256 check_lib(){
1257     log check_lib "$@"
1258     name="$1"
1259     headers="$2"
1260     funcs="$3"
1261     shift 3
1262     disable $name
1263     check_func_headers "$headers" "$funcs" "$@" &&
1264         enable $name && eval ${name}_extralibs="\$@"
1265 }
1266
1267 check_lib_cpp(){
1268     log check_lib_cpp "$@"
1269     name="$1"
1270     headers="$2"
1271     classes="$3"
1272     shift 3
1273     disable $name
1274     check_class_headers_cpp "$headers" "$classes" "$@" &&
1275         enable $name && eval ${name}_extralibs="\$@"
1276 }
1277
1278 test_pkg_config(){
1279     log test_pkg_config "$@"
1280     name="$1"
1281     pkg_version="$2"
1282     pkg="${2%% *}"
1283     headers="$3"
1284     funcs="$4"
1285     shift 4
1286     disable $name
1287     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1288     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1289     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1290     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1291         enable $name &&
1292         set_sanitized "${name}_cflags"    $pkg_cflags &&
1293         set_sanitized "${name}_extralibs" $pkg_libs
1294 }
1295
1296 check_pkg_config(){
1297     log check_pkg_config "$@"
1298     name="$1"
1299     test_pkg_config "$@" &&
1300         eval add_cflags \$${name}_cflags
1301 }
1302
1303 check_exec(){
1304     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1305 }
1306
1307 check_exec_crash(){
1308     log check_exec_crash "$@"
1309     code=$(cat)
1310
1311     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1312     # are safe but may not be available everywhere.  Thus we use
1313     # raise(SIGTERM) instead.  The check is run in a subshell so we
1314     # can redirect the "Terminated" message from the shell.  SIGBUS
1315     # is not defined by standard C so it is used conditionally.
1316
1317     (check_exec "$@") >> $logfile 2>&1 <<EOF
1318 #include <signal.h>
1319 static void sighandler(int sig){
1320     raise(SIGTERM);
1321 }
1322 int foo(void){
1323     $code
1324 }
1325 int (*func_ptr)(void) = foo;
1326 int main(void){
1327     signal(SIGILL, sighandler);
1328     signal(SIGFPE, sighandler);
1329     signal(SIGSEGV, sighandler);
1330 #ifdef SIGBUS
1331     signal(SIGBUS, sighandler);
1332 #endif
1333     return func_ptr();
1334 }
1335 EOF
1336 }
1337
1338 check_type(){
1339     log check_type "$@"
1340     headers=$1
1341     type=$2
1342     shift 2
1343     disable_sanitized "$type"
1344     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1345 }
1346
1347 check_struct(){
1348     log check_struct "$@"
1349     headers=$1
1350     struct=$2
1351     member=$3
1352     shift 3
1353     disable_sanitized "${struct}_${member}"
1354     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1355         enable_sanitized "${struct}_${member}"
1356 }
1357
1358 check_builtin(){
1359     log check_builtin "$@"
1360     name=$1
1361     headers=$2
1362     builtin=$3
1363     shift 3
1364     disable "$name"
1365     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1366 }
1367
1368 check_compile_assert(){
1369     log check_compile_assert "$@"
1370     name=$1
1371     headers=$2
1372     condition=$3
1373     shift 3
1374     disable "$name"
1375     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1376 }
1377
1378 require(){
1379     log require "$@"
1380     name_version="$1"
1381     name="${1%% *}"
1382     headers="$2"
1383     func="$3"
1384     shift 3
1385     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1386 }
1387
1388 require_cpp(){
1389     name="$1"
1390     headers="$2"
1391     classes="$3"
1392     shift 3
1393     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1394 }
1395
1396 require_header(){
1397     log require_header "$@"
1398     headers="$1"
1399     shift
1400     check_header "$headers" "$@" || die "ERROR: $headers not found"
1401 }
1402
1403 require_cpp_condition(){
1404     log require_cpp_condition "$@"
1405     header="$1"
1406     condition="$2"
1407     shift 2
1408     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1409 }
1410
1411 require_pkg_config(){
1412     log require_pkg_config "$@"
1413     pkg_version="$2"
1414     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1415 }
1416
1417 hostcc_e(){
1418     eval printf '%s\\n' $HOSTCC_E
1419 }
1420
1421 hostcc_o(){
1422     eval printf '%s\\n' $HOSTCC_O
1423 }
1424
1425 check_host_cc(){
1426     log check_host_cc "$@"
1427     cat > $TMPC
1428     log_file $TMPC
1429     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1430 }
1431
1432 check_host_cpp(){
1433     log check_host_cpp "$@"
1434     cat > $TMPC
1435     log_file $TMPC
1436     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1437 }
1438
1439 check_host_cppflags(){
1440     log check_host_cppflags "$@"
1441     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1442 #include <stdlib.h>
1443 EOF
1444 }
1445
1446 check_host_cflags(){
1447     log check_host_cflags "$@"
1448     set -- $($host_cflags_filter "$@")
1449     check_host_cc "$@" <<EOF && append host_cflags "$@"
1450 int x;
1451 EOF
1452 }
1453
1454 check_host_cpp_condition(){
1455     log check_host_cpp_condition "$@"
1456     header=$1
1457     condition=$2
1458     shift 2
1459     check_host_cpp "$@" <<EOF
1460 #include <$header>
1461 #if !($condition)
1462 #error "unsatisfied condition: $condition"
1463 #endif
1464 EOF
1465 }
1466
1467 cp_if_changed(){
1468     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1469     mkdir -p "$(dirname $2)"
1470     cp -f "$1" "$2"
1471 }
1472
1473 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1474 # system-dependent things.
1475
1476 AVCODEC_COMPONENTS="
1477     bsfs
1478     decoders
1479     encoders
1480     hwaccels
1481     parsers
1482 "
1483
1484 AVDEVICE_COMPONENTS="
1485     indevs
1486     outdevs
1487 "
1488
1489 AVFILTER_COMPONENTS="
1490     filters
1491 "
1492
1493 AVFORMAT_COMPONENTS="
1494     demuxers
1495     muxers
1496     protocols
1497 "
1498
1499 COMPONENT_LIST="
1500     $AVCODEC_COMPONENTS
1501     $AVDEVICE_COMPONENTS
1502     $AVFILTER_COMPONENTS
1503     $AVFORMAT_COMPONENTS
1504 "
1505
1506 EXAMPLE_LIST="
1507     avio_dir_cmd_example
1508     avio_reading_example
1509     decode_audio_example
1510     decode_video_example
1511     demuxing_decoding_example
1512     encode_audio_example
1513     encode_video_example
1514     extract_mvs_example
1515     filter_audio_example
1516     filtering_audio_example
1517     filtering_video_example
1518     http_multiclient_example
1519     hw_decode_example
1520     metadata_example
1521     muxing_example
1522     qsvdec_example
1523     remuxing_example
1524     resampling_audio_example
1525     scaling_video_example
1526     transcode_aac_example
1527     transcoding_example
1528     vaapi_encode_example
1529 "
1530
1531 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1532     alsa
1533     appkit
1534     avfoundation
1535     bzlib
1536     coreimage
1537     iconv
1538     libxcb
1539     libxcb_shm
1540     libxcb_shape
1541     libxcb_xfixes
1542     lzma
1543     schannel
1544     sdl2
1545     securetransport
1546     sndio
1547     xlib
1548     zlib
1549 "
1550
1551 EXTERNAL_LIBRARY_GPL_LIST="
1552     avisynth
1553     frei0r
1554     libcdio
1555     librubberband
1556     libvidstab
1557     libx264
1558     libx265
1559     libxavs
1560     libxvid
1561 "
1562
1563 EXTERNAL_LIBRARY_NONFREE_LIST="
1564     decklink
1565     libndi_newtek
1566     libfdk_aac
1567     openssl
1568     libtls
1569 "
1570
1571 EXTERNAL_LIBRARY_VERSION3_LIST="
1572     gmp
1573     libopencore_amrnb
1574     libopencore_amrwb
1575     libvmaf
1576     libvo_amrwbenc
1577     rkmpp
1578 "
1579
1580 EXTERNAL_LIBRARY_GPLV3_LIST="
1581     libsmbclient
1582 "
1583
1584 EXTERNAL_LIBRARY_LIST="
1585     $EXTERNAL_LIBRARY_GPL_LIST
1586     $EXTERNAL_LIBRARY_NONFREE_LIST
1587     $EXTERNAL_LIBRARY_VERSION3_LIST
1588     $EXTERNAL_LIBRARY_GPLV3_LIST
1589     chromaprint
1590     gcrypt
1591     gnutls
1592     jni
1593     ladspa
1594     libass
1595     libbluray
1596     libbs2b
1597     libcaca
1598     libcelt
1599     libdc1394
1600     libdrm
1601     libflite
1602     libfontconfig
1603     libfreetype
1604     libfribidi
1605     libgme
1606     libgsm
1607     libiec61883
1608     libilbc
1609     libjack
1610     libkvazaar
1611     libmodplug
1612     libmp3lame
1613     libmysofa
1614     libopencv
1615     libopenh264
1616     libopenjpeg
1617     libopenmpt
1618     libopus
1619     libpulse
1620     librsvg
1621     librtmp
1622     libshine
1623     libsmbclient
1624     libsnappy
1625     libsoxr
1626     libspeex
1627     libssh
1628     libtesseract
1629     libtheora
1630     libtwolame
1631     libv4l2
1632     libvorbis
1633     libvpx
1634     libwavpack
1635     libwebp
1636     libxml2
1637     libzimg
1638     libzmq
1639     libzvbi
1640     lv2
1641     mediacodec
1642     openal
1643     opengl
1644 "
1645
1646 HWACCEL_AUTODETECT_LIBRARY_LIST="
1647     amf
1648     audiotoolbox
1649     crystalhd
1650     cuda
1651     cuvid
1652     d3d11va
1653     dxva2
1654     nvdec
1655     nvenc
1656     vaapi
1657     vdpau
1658     videotoolbox
1659     v4l2_m2m
1660     xvmc
1661 "
1662
1663 # catchall list of things that require external libs to link
1664 EXTRALIBS_LIST="
1665     cpu_init
1666     cws2fws
1667 "
1668
1669 HWACCEL_LIBRARY_NONFREE_LIST="
1670     cuda_sdk
1671     libnpp
1672 "
1673
1674 HWACCEL_LIBRARY_LIST="
1675     $HWACCEL_LIBRARY_NONFREE_LIST
1676     libmfx
1677     mmal
1678     omx
1679     opencl
1680 "
1681
1682 DOCUMENT_LIST="
1683     doc
1684     htmlpages
1685     manpages
1686     podpages
1687     txtpages
1688 "
1689
1690 FEATURE_LIST="
1691     ftrapv
1692     gray
1693     hardcoded_tables
1694     omx_rpi
1695     runtime_cpudetect
1696     safe_bitstream_reader
1697     shared
1698     small
1699     static
1700     swscale_alpha
1701 "
1702
1703 LIBRARY_LIST="
1704     avcodec
1705     avdevice
1706     avfilter
1707     avformat
1708     avresample
1709     avutil
1710     postproc
1711     swresample
1712     swscale
1713 "
1714
1715 LICENSE_LIST="
1716     gpl
1717     nonfree
1718     version3
1719 "
1720
1721 PROGRAM_LIST="
1722     ffplay
1723     ffprobe
1724     ffmpeg
1725 "
1726
1727 SUBSYSTEM_LIST="
1728     dct
1729     dwt
1730     error_resilience
1731     faan
1732     fast_unaligned
1733     fft
1734     lsp
1735     lzo
1736     mdct
1737     pixelutils
1738     network
1739     rdft
1740 "
1741
1742 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1743 CONFIG_LIST="
1744     $DOCUMENT_LIST
1745     $EXAMPLE_LIST
1746     $EXTERNAL_LIBRARY_LIST
1747     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1748     $HWACCEL_LIBRARY_LIST
1749     $HWACCEL_AUTODETECT_LIBRARY_LIST
1750     $FEATURE_LIST
1751     $LICENSE_LIST
1752     $LIBRARY_LIST
1753     $PROGRAM_LIST
1754     $SUBSYSTEM_LIST
1755     autodetect
1756     fontconfig
1757     linux_perf
1758     memory_poisoning
1759     neon_clobber_test
1760     ossfuzz
1761     pic
1762     thumb
1763     valgrind_backtrace
1764     xmm_clobber_test
1765     $COMPONENT_LIST
1766 "
1767
1768 THREADS_LIST="
1769     pthreads
1770     os2threads
1771     w32threads
1772 "
1773
1774 ATOMICS_LIST="
1775     atomics_gcc
1776     atomics_suncc
1777     atomics_win32
1778 "
1779
1780 AUTODETECT_LIBS="
1781     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1782     $HWACCEL_AUTODETECT_LIBRARY_LIST
1783     $THREADS_LIST
1784 "
1785
1786 ARCH_LIST="
1787     aarch64
1788     alpha
1789     arm
1790     avr32
1791     avr32_ap
1792     avr32_uc
1793     bfin
1794     ia64
1795     m68k
1796     mips
1797     mips64
1798     parisc
1799     ppc
1800     ppc64
1801     s390
1802     sh4
1803     sparc
1804     sparc64
1805     tilegx
1806     tilepro
1807     tomi
1808     x86
1809     x86_32
1810     x86_64
1811 "
1812
1813 ARCH_EXT_LIST_ARM="
1814     armv5te
1815     armv6
1816     armv6t2
1817     armv8
1818     neon
1819     vfp
1820     vfpv3
1821     setend
1822 "
1823
1824 ARCH_EXT_LIST_MIPS="
1825     mipsfpu
1826     mips32r2
1827     mips32r5
1828     mips64r2
1829     mips32r6
1830     mips64r6
1831     mipsdsp
1832     mipsdspr2
1833     msa
1834 "
1835
1836 ARCH_EXT_LIST_LOONGSON="
1837     loongson2
1838     loongson3
1839     mmi
1840 "
1841
1842 ARCH_EXT_LIST_X86_SIMD="
1843     aesni
1844     amd3dnow
1845     amd3dnowext
1846     avx
1847     avx2
1848     avx512
1849     fma3
1850     fma4
1851     mmx
1852     mmxext
1853     sse
1854     sse2
1855     sse3
1856     sse4
1857     sse42
1858     ssse3
1859     xop
1860 "
1861
1862 ARCH_EXT_LIST_PPC="
1863     altivec
1864     dcbzl
1865     ldbrx
1866     power8
1867     ppc4xx
1868     vsx
1869 "
1870
1871 ARCH_EXT_LIST_X86="
1872     $ARCH_EXT_LIST_X86_SIMD
1873     cpunop
1874     i686
1875 "
1876
1877 ARCH_EXT_LIST="
1878     $ARCH_EXT_LIST_ARM
1879     $ARCH_EXT_LIST_PPC
1880     $ARCH_EXT_LIST_X86
1881     $ARCH_EXT_LIST_MIPS
1882     $ARCH_EXT_LIST_LOONGSON
1883 "
1884
1885 ARCH_FEATURES="
1886     aligned_stack
1887     fast_64bit
1888     fast_clz
1889     fast_cmov
1890     local_aligned
1891     simd_align_16
1892     simd_align_32
1893     simd_align_64
1894 "
1895
1896 BUILTIN_LIST="
1897     atomic_cas_ptr
1898     machine_rw_barrier
1899     MemoryBarrier
1900     mm_empty
1901     rdtsc
1902     sem_timedwait
1903     sync_val_compare_and_swap
1904 "
1905 HAVE_LIST_CMDLINE="
1906     inline_asm
1907     symver
1908     x86asm
1909 "
1910
1911 HAVE_LIST_PUB="
1912     bigendian
1913     fast_unaligned
1914 "
1915
1916 HEADERS_LIST="
1917     arpa_inet_h
1918     asm_types_h
1919     cdio_paranoia_h
1920     cdio_paranoia_paranoia_h
1921     cuda_h
1922     dispatch_dispatch_h
1923     dev_bktr_ioctl_bt848_h
1924     dev_bktr_ioctl_meteor_h
1925     dev_ic_bt8xx_h
1926     dev_video_bktr_ioctl_bt848_h
1927     dev_video_meteor_ioctl_meteor_h
1928     direct_h
1929     dirent_h
1930     dxgidebug_h
1931     dxva_h
1932     ES2_gl_h
1933     gsm_h
1934     io_h
1935     machine_ioctl_bt848_h
1936     machine_ioctl_meteor_h
1937     malloc_h
1938     opencv2_core_core_c_h
1939     OpenGL_gl3_h
1940     poll_h
1941     sys_param_h
1942     sys_resource_h
1943     sys_select_h
1944     sys_soundcard_h
1945     sys_time_h
1946     sys_un_h
1947     sys_videoio_h
1948     termios_h
1949     udplite_h
1950     unistd_h
1951     valgrind_valgrind_h
1952     windows_h
1953     winsock2_h
1954 "
1955
1956 INTRINSICS_LIST="
1957     intrinsics_neon
1958 "
1959
1960 COMPLEX_FUNCS="
1961     cabs
1962     cexp
1963 "
1964
1965 MATH_FUNCS="
1966     atanf
1967     atan2f
1968     cbrt
1969     cbrtf
1970     copysign
1971     cosf
1972     erf
1973     exp2
1974     exp2f
1975     expf
1976     hypot
1977     isfinite
1978     isinf
1979     isnan
1980     ldexpf
1981     llrint
1982     llrintf
1983     log2
1984     log2f
1985     log10f
1986     lrint
1987     lrintf
1988     powf
1989     rint
1990     round
1991     roundf
1992     sinf
1993     trunc
1994     truncf
1995 "
1996
1997 SYSTEM_FEATURES="
1998     dos_paths
1999     libc_msvcrt
2000     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2001     section_data_rel_ro
2002     threads
2003     uwp
2004     winrt
2005 "
2006
2007 SYSTEM_FUNCS="
2008     access
2009     aligned_malloc
2010     arc4random
2011     clock_gettime
2012     closesocket
2013     CommandLineToArgvW
2014     fcntl
2015     getaddrinfo
2016     gethrtime
2017     getopt
2018     GetProcessAffinityMask
2019     GetProcessMemoryInfo
2020     GetProcessTimes
2021     getrusage
2022     GetSystemTimeAsFileTime
2023     gettimeofday
2024     glob
2025     glXGetProcAddress
2026     gmtime_r
2027     inet_aton
2028     isatty
2029     kbhit
2030     localtime_r
2031     lstat
2032     lzo1x_999_compress
2033     mach_absolute_time
2034     MapViewOfFile
2035     memalign
2036     mkstemp
2037     mmap
2038     mprotect
2039     nanosleep
2040     PeekNamedPipe
2041     posix_memalign
2042     pthread_cancel
2043     sched_getaffinity
2044     SecItemImport
2045     SetConsoleTextAttribute
2046     SetConsoleCtrlHandler
2047     setmode
2048     setrlimit
2049     Sleep
2050     strerror_r
2051     sysconf
2052     sysctl
2053     usleep
2054     UTGetOSTypeFromString
2055     VirtualAlloc
2056     wglGetProcAddress
2057 "
2058
2059 SYSTEM_LIBRARIES="
2060     vaapi_drm
2061     vaapi_x11
2062     vdpau_x11
2063     wincrypt
2064 "
2065
2066 TOOLCHAIN_FEATURES="
2067     as_arch_directive
2068     as_fpu_directive
2069     as_func
2070     as_object_arch
2071     asm_mod_q
2072     blocks_extension
2073     ebp_available
2074     ebx_available
2075     gnu_as
2076     gnu_windres
2077     ibm_asm
2078     inline_asm_direct_symbol_refs
2079     inline_asm_labels
2080     inline_asm_nonlocal_labels
2081     pragma_deprecated
2082     rsync_contimeout
2083     symver_asm_label
2084     symver_gnu_asm
2085     vfp_args
2086     xform_asm
2087     xmm_clobbers
2088 "
2089
2090 TYPES_LIST="
2091     kCMVideoCodecType_HEVC
2092     socklen_t
2093     struct_addrinfo
2094     struct_group_source_req
2095     struct_ip_mreq_source
2096     struct_ipv6_mreq
2097     struct_msghdr_msg_flags
2098     struct_pollfd
2099     struct_rusage_ru_maxrss
2100     struct_sctp_event_subscribe
2101     struct_sockaddr_in6
2102     struct_sockaddr_sa_len
2103     struct_sockaddr_storage
2104     struct_stat_st_mtim_tv_nsec
2105     struct_v4l2_frmivalenum_discrete
2106 "
2107
2108 HAVE_LIST="
2109     $ARCH_EXT_LIST
2110     $(add_suffix _external $ARCH_EXT_LIST)
2111     $(add_suffix _inline   $ARCH_EXT_LIST)
2112     $ARCH_FEATURES
2113     $BUILTIN_LIST
2114     $COMPLEX_FUNCS
2115     $HAVE_LIST_CMDLINE
2116     $HAVE_LIST_PUB
2117     $HEADERS_LIST
2118     $INTRINSICS_LIST
2119     $MATH_FUNCS
2120     $SYSTEM_FEATURES
2121     $SYSTEM_FUNCS
2122     $SYSTEM_LIBRARIES
2123     $THREADS_LIST
2124     $TOOLCHAIN_FEATURES
2125     $TYPES_LIST
2126     makeinfo
2127     makeinfo_html
2128     opencl_d3d11
2129     opencl_drm_arm
2130     opencl_dxva2
2131     opencl_vaapi_beignet
2132     opencl_vaapi_intel_media
2133     perl
2134     pod2man
2135     texi2html
2136 "
2137
2138 # options emitted with CONFIG_ prefix but not available on the command line
2139 CONFIG_EXTRA="
2140     aandcttables
2141     ac3dsp
2142     adts_header
2143     audio_frame_queue
2144     audiodsp
2145     blockdsp
2146     bswapdsp
2147     cabac
2148     cbs
2149     cbs_h264
2150     cbs_h265
2151     cbs_mpeg2
2152     dirac_parse
2153     dvprofile
2154     exif
2155     faandct
2156     faanidct
2157     fdctdsp
2158     flacdsp
2159     fmtconvert
2160     frame_thread_encoder
2161     g722dsp
2162     golomb
2163     gplv3
2164     h263dsp
2165     h264chroma
2166     h264dsp
2167     h264parse
2168     h264pred
2169     h264qpel
2170     hevcparse
2171     hpeldsp
2172     huffman
2173     huffyuvdsp
2174     huffyuvencdsp
2175     idctdsp
2176     iirfilter
2177     mdct15
2178     intrax8
2179     iso_media
2180     ividsp
2181     jpegtables
2182     lgplv3
2183     libx262
2184     llauddsp
2185     llviddsp
2186     llvidencdsp
2187     lpc
2188     lzf
2189     me_cmp
2190     mpeg_er
2191     mpegaudio
2192     mpegaudiodsp
2193     mpegaudioheader
2194     mpegvideo
2195     mpegvideoenc
2196     mss34dsp
2197     pixblockdsp
2198     qpeldsp
2199     qsv
2200     qsvdec
2201     qsvenc
2202     qsvvpp
2203     rangecoder
2204     riffdec
2205     riffenc
2206     rtpdec
2207     rtpenc_chain
2208     rv34dsp
2209     sinewin
2210     snappy
2211     srtp
2212     startcode
2213     texturedsp
2214     texturedspenc
2215     tpeldsp
2216     vaapi_1
2217     vaapi_encode
2218     vc1dsp
2219     videodsp
2220     vp3dsp
2221     vp56dsp
2222     vp8dsp
2223     wma_freqs
2224     wmv2dsp
2225 "
2226
2227 CMDLINE_SELECT="
2228     $ARCH_EXT_LIST
2229     $CONFIG_LIST
2230     $HAVE_LIST_CMDLINE
2231     $THREADS_LIST
2232     asm
2233     cross_compile
2234     debug
2235     extra_warnings
2236     logging
2237     lto
2238     optimizations
2239     rpath
2240     stripping
2241 "
2242
2243 PATHS_LIST="
2244     bindir
2245     datadir
2246     docdir
2247     incdir
2248     libdir
2249     mandir
2250     pkgconfigdir
2251     prefix
2252     shlibdir
2253     install_name_dir
2254 "
2255
2256 CMDLINE_SET="
2257     $PATHS_LIST
2258     ar
2259     arch
2260     as
2261     assert_level
2262     build_suffix
2263     cc
2264     objcc
2265     cpu
2266     cross_prefix
2267     custom_allocator
2268     cxx
2269     dep_cc
2270     doxygen
2271     env
2272     extra_version
2273     gas
2274     host_cc
2275     host_cflags
2276     host_extralibs
2277     host_ld
2278     host_ldflags
2279     host_os
2280     ignore_tests
2281     install
2282     ld
2283     ln_s
2284     logfile
2285     malloc_prefix
2286     nm
2287     optflags
2288     nvccflags
2289     pkg_config
2290     pkg_config_flags
2291     progs_suffix
2292     random_seed
2293     ranlib
2294     samples
2295     strip
2296     sws_max_filter_size
2297     sysinclude
2298     sysroot
2299     target_exec
2300     target_os
2301     target_path
2302     target_samples
2303     tempprefix
2304     toolchain
2305     valgrind
2306     x86asmexe
2307 "
2308
2309 CMDLINE_APPEND="
2310     extra_cflags
2311     extra_cxxflags
2312     extra_objcflags
2313     host_cppflags
2314 "
2315
2316 # code dependency declarations
2317
2318 # architecture extensions
2319
2320 armv5te_deps="arm"
2321 armv6_deps="arm"
2322 armv6t2_deps="arm"
2323 armv8_deps="aarch64"
2324 neon_deps_any="aarch64 arm"
2325 intrinsics_neon_deps="neon"
2326 vfp_deps_any="aarch64 arm"
2327 vfpv3_deps="vfp"
2328 setend_deps="arm"
2329
2330 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2331
2332 altivec_deps="ppc"
2333 dcbzl_deps="ppc"
2334 ldbrx_deps="ppc"
2335 ppc4xx_deps="ppc"
2336 vsx_deps="altivec"
2337 power8_deps="vsx"
2338
2339 loongson2_deps="mips"
2340 loongson3_deps="mips"
2341 mips32r2_deps="mips"
2342 mips32r5_deps="mips"
2343 mips32r6_deps="mips"
2344 mips64r2_deps="mips"
2345 mips64r6_deps="mips"
2346 mipsfpu_deps="mips"
2347 mipsdsp_deps="mips"
2348 mipsdspr2_deps="mips"
2349 mmi_deps="mips"
2350 msa_deps="mipsfpu"
2351
2352 cpunop_deps="i686"
2353 x86_64_select="i686"
2354 x86_64_suggest="fast_cmov"
2355
2356 amd3dnow_deps="mmx"
2357 amd3dnowext_deps="amd3dnow"
2358 i686_deps="x86"
2359 mmx_deps="x86"
2360 mmxext_deps="mmx"
2361 sse_deps="mmxext"
2362 sse2_deps="sse"
2363 sse3_deps="sse2"
2364 ssse3_deps="sse3"
2365 sse4_deps="ssse3"
2366 sse42_deps="sse4"
2367 aesni_deps="sse42"
2368 avx_deps="sse42"
2369 xop_deps="avx"
2370 fma3_deps="avx"
2371 fma4_deps="avx"
2372 avx2_deps="avx"
2373 avx512_deps="avx2"
2374
2375 mmx_external_deps="x86asm"
2376 mmx_inline_deps="inline_asm x86"
2377 mmx_suggest="mmx_external mmx_inline"
2378
2379 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2380     eval dep=\$${ext}_deps
2381     eval ${ext}_external_deps='"${dep}_external"'
2382     eval ${ext}_inline_deps='"${dep}_inline"'
2383     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2384 done
2385
2386 aligned_stack_if_any="aarch64 ppc x86"
2387 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2388 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2389 fast_unaligned_if_any="aarch64 ppc x86"
2390 simd_align_16_if_any="altivec neon sse"
2391 simd_align_32_if_any="avx"
2392 simd_align_64_if_any="avx512"
2393
2394 # system capabilities
2395 symver_if_any="symver_asm_label symver_gnu_asm"
2396 valgrind_backtrace_conflict="optimizations"
2397 valgrind_backtrace_deps="valgrind_valgrind_h"
2398
2399 # threading support
2400 atomics_gcc_if="sync_val_compare_and_swap"
2401 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2402 atomics_win32_if="MemoryBarrier"
2403 atomics_native_if_any="$ATOMICS_LIST"
2404 w32threads_deps="atomics_native"
2405 threads_if_any="$THREADS_LIST"
2406
2407 # subsystems
2408 cbs_h264_select="cbs golomb"
2409 cbs_h265_select="cbs golomb"
2410 cbs_mpeg2_select="cbs"
2411 dct_select="rdft"
2412 dirac_parse_select="golomb"
2413 error_resilience_select="me_cmp"
2414 faandct_deps="faan"
2415 faandct_select="fdctdsp"
2416 faanidct_deps="faan"
2417 faanidct_select="idctdsp"
2418 h264dsp_select="startcode"
2419 hevcparse_select="golomb"
2420 frame_thread_encoder_deps="encoders threads"
2421 intrax8_select="blockdsp idctdsp"
2422 mdct_select="fft"
2423 mdct15_select="fft"
2424 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2425 mpeg_er_select="error_resilience"
2426 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2427 mpegaudiodsp_select="dct"
2428 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2429 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2430 vc1dsp_select="h264chroma qpeldsp startcode"
2431 rdft_select="fft"
2432
2433 # decoders / encoders
2434 aac_decoder_select="adts_header mdct15 mdct sinewin"
2435 aac_fixed_decoder_select="mdct sinewin"
2436 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2437 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2438 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2439 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2440 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2441 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2442 adpcm_g722_decoder_select="g722dsp"
2443 adpcm_g722_encoder_select="g722dsp"
2444 aic_decoder_select="golomb idctdsp"
2445 alac_encoder_select="lpc"
2446 als_decoder_select="bswapdsp"
2447 amrnb_decoder_select="lsp"
2448 amrwb_decoder_select="lsp"
2449 amv_decoder_select="sp5x_decoder exif"
2450 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2451 ape_decoder_select="bswapdsp llauddsp"
2452 apng_decoder_deps="zlib"
2453 apng_encoder_deps="zlib"
2454 apng_encoder_select="llvidencdsp"
2455 aptx_decoder_select="audio_frame_queue"
2456 aptx_encoder_select="audio_frame_queue"
2457 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2458 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2459 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2460 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2461 atrac1_decoder_select="mdct sinewin"
2462 atrac3_decoder_select="mdct"
2463 atrac3p_decoder_select="mdct sinewin"
2464 avrn_decoder_select="exif jpegtables"
2465 bink_decoder_select="blockdsp hpeldsp"
2466 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2467 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2468 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2469 clearvideo_decoder_select="idctdsp"
2470 cllc_decoder_select="bswapdsp"
2471 comfortnoise_encoder_select="lpc"
2472 cook_decoder_select="audiodsp mdct sinewin"
2473 cscd_decoder_select="lzo"
2474 cscd_decoder_suggest="zlib"
2475 dca_decoder_select="mdct"
2476 dds_decoder_select="texturedsp"
2477 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2478 dnxhd_decoder_select="blockdsp idctdsp"
2479 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2480 dolby_e_decoder_select="mdct"
2481 dvvideo_decoder_select="dvprofile idctdsp"
2482 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2483 dxa_decoder_deps="zlib"
2484 dxv_decoder_select="lzf texturedsp"
2485 eac3_decoder_select="ac3_decoder"
2486 eac3_encoder_select="ac3_encoder"
2487 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2488 eatgq_decoder_select="aandcttables"
2489 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2490 exr_decoder_deps="zlib"
2491 ffv1_decoder_select="rangecoder"
2492 ffv1_encoder_select="rangecoder"
2493 ffvhuff_decoder_select="huffyuv_decoder"
2494 ffvhuff_encoder_select="huffyuv_encoder"
2495 fic_decoder_select="golomb"
2496 flac_decoder_select="flacdsp"
2497 flac_encoder_select="bswapdsp flacdsp lpc"
2498 flashsv2_decoder_deps="zlib"
2499 flashsv2_encoder_deps="zlib"
2500 flashsv_decoder_deps="zlib"
2501 flashsv_encoder_deps="zlib"
2502 flv_decoder_select="h263_decoder"
2503 flv_encoder_select="h263_encoder"
2504 fourxm_decoder_select="blockdsp bswapdsp"
2505 fraps_decoder_select="bswapdsp huffman"
2506 g2m_decoder_deps="zlib"
2507 g2m_decoder_select="blockdsp idctdsp jpegtables"
2508 g729_decoder_select="audiodsp"
2509 h261_decoder_select="mpegvideo"
2510 h261_encoder_select="aandcttables mpegvideoenc"
2511 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2512 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2513 h263i_decoder_select="h263_decoder"
2514 h263p_decoder_select="h263_decoder"
2515 h263p_encoder_select="h263_encoder"
2516 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2517 h264_decoder_suggest="error_resilience"
2518 hap_decoder_select="snappy texturedsp"
2519 hap_encoder_deps="libsnappy"
2520 hap_encoder_select="texturedspenc"
2521 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2522 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2523 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2524 iac_decoder_select="imc_decoder"
2525 imc_decoder_select="bswapdsp fft mdct sinewin"
2526 indeo3_decoder_select="hpeldsp"
2527 indeo4_decoder_select="ividsp"
2528 indeo5_decoder_select="ividsp"
2529 interplay_video_decoder_select="hpeldsp"
2530 jpegls_decoder_select="mjpeg_decoder"
2531 jv_decoder_select="blockdsp"
2532 lagarith_decoder_select="llviddsp"
2533 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2534 magicyuv_decoder_select="llviddsp"
2535 magicyuv_encoder_select="llvidencdsp"
2536 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2537 metasound_decoder_select="lsp mdct sinewin"
2538 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2539 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2540 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2541 mjpegb_decoder_select="mjpeg_decoder"
2542 mlp_decoder_select="mlp_parser"
2543 mlp_encoder_select="lpc"
2544 motionpixels_decoder_select="bswapdsp"
2545 mp1_decoder_select="mpegaudio"
2546 mp1float_decoder_select="mpegaudio"
2547 mp2_decoder_select="mpegaudio"
2548 mp2float_decoder_select="mpegaudio"
2549 mp3_decoder_select="mpegaudio"
2550 mp3adu_decoder_select="mpegaudio"
2551 mp3adufloat_decoder_select="mpegaudio"
2552 mp3float_decoder_select="mpegaudio"
2553 mp3on4_decoder_select="mpegaudio"
2554 mp3on4float_decoder_select="mpegaudio"
2555 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2556 mpc8_decoder_select="mpegaudiodsp"
2557 mpegvideo_decoder_select="mpegvideo"
2558 mpeg1video_decoder_select="mpegvideo"
2559 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2560 mpeg2video_decoder_select="mpegvideo"
2561 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2562 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2563 mpeg4_encoder_select="h263_encoder"
2564 msa1_decoder_select="mss34dsp"
2565 mscc_decoder_deps="zlib"
2566 msmpeg4v1_decoder_select="h263_decoder"
2567 msmpeg4v2_decoder_select="h263_decoder"
2568 msmpeg4v2_encoder_select="h263_encoder"
2569 msmpeg4v3_decoder_select="h263_decoder"
2570 msmpeg4v3_encoder_select="h263_encoder"
2571 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2572 mts2_decoder_select="mss34dsp"
2573 mxpeg_decoder_select="mjpeg_decoder"
2574 nellymoser_decoder_select="mdct sinewin"
2575 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2576 nuv_decoder_select="idctdsp lzo"
2577 on2avc_decoder_select="mdct"
2578 opus_decoder_deps="swresample"
2579 opus_decoder_select="mdct15"
2580 opus_encoder_select="audio_frame_queue mdct15"
2581 png_decoder_deps="zlib"
2582 png_encoder_deps="zlib"
2583 png_encoder_select="llvidencdsp"
2584 prores_decoder_select="blockdsp idctdsp"
2585 prores_encoder_select="fdctdsp"
2586 qcelp_decoder_select="lsp"
2587 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2588 ra_144_decoder_select="audiodsp"
2589 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2590 ralf_decoder_select="golomb"
2591 rawvideo_decoder_select="bswapdsp"
2592 rscc_decoder_deps="zlib"
2593 rtjpeg_decoder_select="me_cmp"
2594 rv10_decoder_select="h263_decoder"
2595 rv10_encoder_select="h263_encoder"
2596 rv20_decoder_select="h263_decoder"
2597 rv20_encoder_select="h263_encoder"
2598 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2599 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2600 screenpresso_decoder_deps="zlib"
2601 shorten_decoder_select="bswapdsp"
2602 sipr_decoder_select="lsp"
2603 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2604 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2605 sonic_decoder_select="golomb rangecoder"
2606 sonic_encoder_select="golomb rangecoder"
2607 sonic_ls_encoder_select="golomb rangecoder"
2608 sp5x_decoder_select="mjpeg_decoder"
2609 srgc_decoder_deps="zlib"
2610 svq1_decoder_select="hpeldsp"
2611 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2612 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2613 svq3_decoder_suggest="zlib"
2614 tak_decoder_select="audiodsp"
2615 tdsc_decoder_deps="zlib"
2616 tdsc_decoder_select="mjpeg_decoder"
2617 theora_decoder_select="vp3_decoder"
2618 thp_decoder_select="mjpeg_decoder"
2619 tiff_decoder_suggest="zlib lzma"
2620 tiff_encoder_suggest="zlib"
2621 truehd_decoder_select="mlp_parser"
2622 truehd_encoder_select="lpc"
2623 truemotion2_decoder_select="bswapdsp"
2624 truespeech_decoder_select="bswapdsp"
2625 tscc_decoder_deps="zlib"
2626 twinvq_decoder_select="mdct lsp sinewin"
2627 txd_decoder_select="texturedsp"
2628 utvideo_decoder_select="bswapdsp llviddsp"
2629 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2630 vble_decoder_select="llviddsp"
2631 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2632 vc1image_decoder_select="vc1_decoder"
2633 vorbis_decoder_select="mdct"
2634 vorbis_encoder_select="mdct"
2635 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2636 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2637 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2638 vp6a_decoder_select="vp6_decoder"
2639 vp6f_decoder_select="vp6_decoder"
2640 vp7_decoder_select="h264pred videodsp vp8dsp"
2641 vp8_decoder_select="h264pred videodsp vp8dsp"
2642 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2643 webp_decoder_select="vp8_decoder exif"
2644 wmalossless_decoder_select="llauddsp"
2645 wmapro_decoder_select="mdct sinewin wma_freqs"
2646 wmav1_decoder_select="mdct sinewin wma_freqs"
2647 wmav1_encoder_select="mdct sinewin wma_freqs"
2648 wmav2_decoder_select="mdct sinewin wma_freqs"
2649 wmav2_encoder_select="mdct sinewin wma_freqs"
2650 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2651 wmv1_decoder_select="h263_decoder"
2652 wmv1_encoder_select="h263_encoder"
2653 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2654 wmv2_encoder_select="h263_encoder wmv2dsp"
2655 wmv3_decoder_select="vc1_decoder"
2656 wmv3image_decoder_select="wmv3_decoder"
2657 xma1_decoder_select="wmapro_decoder"
2658 xma2_decoder_select="wmapro_decoder"
2659 zerocodec_decoder_deps="zlib"
2660 zlib_decoder_deps="zlib"
2661 zlib_encoder_deps="zlib"
2662 zmbv_decoder_deps="zlib"
2663 zmbv_encoder_deps="zlib"
2664
2665 # hardware accelerators
2666 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2667 cuda_deps_any="libdl LoadLibrary"
2668 cuvid_deps="cuda"
2669 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2670 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2671 nvdec_deps="cuda"
2672 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2673 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2674 xvmc_deps="X11_extensions_XvMClib_h"
2675
2676 h263_vaapi_hwaccel_deps="vaapi"
2677 h263_vaapi_hwaccel_select="h263_decoder"
2678 h263_videotoolbox_hwaccel_deps="videotoolbox"
2679 h263_videotoolbox_hwaccel_select="h263_decoder"
2680 h264_d3d11va_hwaccel_deps="d3d11va"
2681 h264_d3d11va_hwaccel_select="h264_decoder"
2682 h264_d3d11va2_hwaccel_deps="d3d11va"
2683 h264_d3d11va2_hwaccel_select="h264_decoder"
2684 h264_dxva2_hwaccel_deps="dxva2"
2685 h264_dxva2_hwaccel_select="h264_decoder"
2686 h264_nvdec_hwaccel_deps="nvdec"
2687 h264_nvdec_hwaccel_select="h264_decoder"
2688 h264_vaapi_hwaccel_deps="vaapi"
2689 h264_vaapi_hwaccel_select="h264_decoder"
2690 h264_vdpau_hwaccel_deps="vdpau"
2691 h264_vdpau_hwaccel_select="h264_decoder"
2692 h264_videotoolbox_hwaccel_deps="videotoolbox"
2693 h264_videotoolbox_hwaccel_select="h264_decoder"
2694 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2695 hevc_d3d11va_hwaccel_select="hevc_decoder"
2696 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2697 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2698 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2699 hevc_dxva2_hwaccel_select="hevc_decoder"
2700 hevc_nvdec_hwaccel_deps="nvdec"
2701 hevc_nvdec_hwaccel_select="hevc_decoder"
2702 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2703 hevc_vaapi_hwaccel_select="hevc_decoder"
2704 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2705 hevc_vdpau_hwaccel_select="hevc_decoder"
2706 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2707 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2708 mpeg_xvmc_hwaccel_deps="xvmc"
2709 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2710 mpeg1_nvdec_hwaccel_deps="nvdec"
2711 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2712 mpeg1_vdpau_hwaccel_deps="vdpau"
2713 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2714 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2715 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2716 mpeg1_xvmc_hwaccel_deps="xvmc"
2717 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2718 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2719 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2721 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_dxva2_hwaccel_deps="dxva2"
2723 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_nvdec_hwaccel_deps="nvdec"
2725 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_vaapi_hwaccel_deps="vaapi"
2727 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_vdpau_hwaccel_deps="vdpau"
2729 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2731 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2732 mpeg2_xvmc_hwaccel_deps="xvmc"
2733 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2734 mpeg4_nvdec_hwaccel_deps="nvdec"
2735 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2736 mpeg4_vaapi_hwaccel_deps="vaapi"
2737 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2738 mpeg4_vdpau_hwaccel_deps="vdpau"
2739 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2740 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2741 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2742 vc1_d3d11va_hwaccel_deps="d3d11va"
2743 vc1_d3d11va_hwaccel_select="vc1_decoder"
2744 vc1_d3d11va2_hwaccel_deps="d3d11va"
2745 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2746 vc1_dxva2_hwaccel_deps="dxva2"
2747 vc1_dxva2_hwaccel_select="vc1_decoder"
2748 vc1_nvdec_hwaccel_deps="nvdec"
2749 vc1_nvdec_hwaccel_select="vc1_decoder"
2750 vc1_vaapi_hwaccel_deps="vaapi"
2751 vc1_vaapi_hwaccel_select="vc1_decoder"
2752 vc1_vdpau_hwaccel_deps="vdpau"
2753 vc1_vdpau_hwaccel_select="vc1_decoder"
2754 vp8_nvdec_hwaccel_deps="nvdec"
2755 vp8_nvdec_hwaccel_select="vp8_decoder"
2756 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2757 vp8_vaapi_hwaccel_select="vp8_decoder"
2758 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2759 vp9_d3d11va_hwaccel_select="vp9_decoder"
2760 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2761 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2762 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2763 vp9_dxva2_hwaccel_select="vp9_decoder"
2764 vp9_nvdec_hwaccel_deps="nvdec"
2765 vp9_nvdec_hwaccel_select="vp9_decoder"
2766 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2767 vp9_vaapi_hwaccel_select="vp9_decoder"
2768 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2769 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2770 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2771 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2772 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2773 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2774
2775 # hardware-accelerated codecs
2776 omx_deps="libdl pthreads"
2777 omx_rpi_select="omx"
2778 qsv_deps="libmfx"
2779 qsvdec_select="qsv"
2780 qsvenc_select="qsv"
2781 qsvvpp_select="qsv"
2782 vaapi_encode_deps="vaapi"
2783 v4l2_m2m_deps_any="linux_videodev2_h"
2784
2785 hwupload_cuda_filter_deps="cuda"
2786 scale_npp_filter_deps="cuda libnpp"
2787 scale_cuda_filter_deps="cuda_sdk"
2788 thumbnail_cuda_filter_deps="cuda_sdk"
2789
2790 amf_deps_any="libdl LoadLibrary"
2791 nvenc_deps="cuda"
2792 nvenc_deps_any="libdl LoadLibrary"
2793 nvenc_encoder_deps="nvenc"
2794
2795 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2796 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2797 h264_amf_encoder_deps="amf"
2798 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2799 h264_cuvid_decoder_deps="cuvid"
2800 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2801 h264_mediacodec_decoder_deps="mediacodec"
2802 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2803 h264_mmal_decoder_deps="mmal"
2804 h264_nvenc_encoder_deps="nvenc"
2805 h264_omx_encoder_deps="omx"
2806 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2807 h264_qsv_encoder_select="qsvenc"
2808 h264_rkmpp_decoder_deps="rkmpp"
2809 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2810 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2811 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2812 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2813 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2814 hevc_amf_encoder_deps="amf"
2815 hevc_cuvid_decoder_deps="cuvid"
2816 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2817 hevc_mediacodec_decoder_deps="mediacodec"
2818 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2819 hevc_nvenc_encoder_deps="nvenc"
2820 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2821 hevc_qsv_encoder_select="hevcparse qsvenc"
2822 hevc_rkmpp_decoder_deps="rkmpp"
2823 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2824 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2825 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2826 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2827 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2828 mjpeg_cuvid_decoder_deps="cuvid"
2829 mjpeg_qsv_encoder_deps="libmfx"
2830 mjpeg_qsv_encoder_select="qsvenc"
2831 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2832 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2833 mpeg1_cuvid_decoder_deps="cuvid"
2834 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2835 mpeg2_crystalhd_decoder_select="crystalhd"
2836 mpeg2_cuvid_decoder_deps="cuvid"
2837 mpeg2_mmal_decoder_deps="mmal"
2838 mpeg2_mediacodec_decoder_deps="mediacodec"
2839 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2840 mpeg2_qsv_encoder_select="qsvenc"
2841 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2842 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2843 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2844 mpeg4_crystalhd_decoder_select="crystalhd"
2845 mpeg4_cuvid_decoder_deps="cuvid"
2846 mpeg4_mediacodec_decoder_deps="mediacodec"
2847 mpeg4_mmal_decoder_deps="mmal"
2848 mpeg4_omx_encoder_deps="omx"
2849 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2850 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2851 msmpeg4_crystalhd_decoder_select="crystalhd"
2852 nvenc_h264_encoder_select="h264_nvenc_encoder"
2853 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2854 vc1_crystalhd_decoder_select="crystalhd"
2855 vc1_cuvid_decoder_deps="cuvid"
2856 vc1_mmal_decoder_deps="mmal"
2857 vc1_qsv_decoder_select="qsvdec vc1_parser"
2858 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2859 vp8_cuvid_decoder_deps="cuvid"
2860 vp8_mediacodec_decoder_deps="mediacodec"
2861 vp8_qsv_decoder_select="qsvdec vp8_parser"
2862 vp8_rkmpp_decoder_deps="rkmpp"
2863 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2864 vp8_vaapi_encoder_select="vaapi_encode"
2865 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2866 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2867 vp9_cuvid_decoder_deps="cuvid"
2868 vp9_mediacodec_decoder_deps="mediacodec"
2869 vp9_rkmpp_decoder_deps="rkmpp"
2870 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2871 vp9_vaapi_encoder_select="vaapi_encode"
2872 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2873 wmv3_crystalhd_decoder_select="crystalhd"
2874
2875 # parsers
2876 aac_parser_select="adts_header"
2877 h264_parser_select="golomb h264dsp h264parse"
2878 hevc_parser_select="hevcparse"
2879 mpegaudio_parser_select="mpegaudioheader"
2880 mpegvideo_parser_select="mpegvideo"
2881 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2882 vc1_parser_select="vc1dsp"
2883
2884 # bitstream_filters
2885 aac_adtstoasc_bsf_select="adts_header"
2886 h264_metadata_bsf_select="cbs_h264"
2887 h264_redundant_pps_bsf_select="cbs_h264"
2888 hevc_metadata_bsf_select="cbs_h265"
2889 mjpeg2jpeg_bsf_select="jpegtables"
2890 mpeg2_metadata_bsf_select="cbs_mpeg2"
2891 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2892
2893 # external libraries
2894 aac_at_decoder_deps="audiotoolbox"
2895 aac_at_decoder_select="aac_adtstoasc_bsf"
2896 ac3_at_decoder_deps="audiotoolbox"
2897 ac3_at_decoder_select="ac3_parser"
2898 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2899 alac_at_decoder_deps="audiotoolbox"
2900 amr_nb_at_decoder_deps="audiotoolbox"
2901 avisynth_deps_any="libdl LoadLibrary"
2902 avisynth_demuxer_deps="avisynth"
2903 avisynth_demuxer_select="riffdec"
2904 eac3_at_decoder_deps="audiotoolbox"
2905 eac3_at_decoder_select="ac3_parser"
2906 gsm_ms_at_decoder_deps="audiotoolbox"
2907 ilbc_at_decoder_deps="audiotoolbox"
2908 mp1_at_decoder_deps="audiotoolbox"
2909 mp2_at_decoder_deps="audiotoolbox"
2910 mp3_at_decoder_deps="audiotoolbox"
2911 mp1_at_decoder_select="mpegaudioheader"
2912 mp2_at_decoder_select="mpegaudioheader"
2913 mp3_at_decoder_select="mpegaudioheader"
2914 pcm_alaw_at_decoder_deps="audiotoolbox"
2915 pcm_mulaw_at_decoder_deps="audiotoolbox"
2916 qdmc_at_decoder_deps="audiotoolbox"
2917 qdm2_at_decoder_deps="audiotoolbox"
2918 aac_at_encoder_deps="audiotoolbox"
2919 aac_at_encoder_select="audio_frame_queue"
2920 alac_at_encoder_deps="audiotoolbox"
2921 alac_at_encoder_select="audio_frame_queue"
2922 ilbc_at_encoder_deps="audiotoolbox"
2923 ilbc_at_encoder_select="audio_frame_queue"
2924 pcm_alaw_at_encoder_deps="audiotoolbox"
2925 pcm_alaw_at_encoder_select="audio_frame_queue"
2926 pcm_mulaw_at_encoder_deps="audiotoolbox"
2927 pcm_mulaw_at_encoder_select="audio_frame_queue"
2928 chromaprint_muxer_deps="chromaprint"
2929 h264_videotoolbox_encoder_deps="pthreads"
2930 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2931 hevc_videotoolbox_encoder_deps="pthreads"
2932 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2933 libcelt_decoder_deps="libcelt"
2934 libfdk_aac_decoder_deps="libfdk_aac"
2935 libfdk_aac_encoder_deps="libfdk_aac"
2936 libfdk_aac_encoder_select="audio_frame_queue"
2937 libgme_demuxer_deps="libgme"
2938 libgsm_decoder_deps="libgsm"
2939 libgsm_encoder_deps="libgsm"
2940 libgsm_ms_decoder_deps="libgsm"
2941 libgsm_ms_encoder_deps="libgsm"
2942 libilbc_decoder_deps="libilbc"
2943 libilbc_encoder_deps="libilbc"
2944 libkvazaar_encoder_deps="libkvazaar"
2945 libmodplug_demuxer_deps="libmodplug"
2946 libmp3lame_encoder_deps="libmp3lame"
2947 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2948 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2949 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2950 libopencore_amrnb_encoder_select="audio_frame_queue"
2951 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2952 libopenh264_decoder_deps="libopenh264"
2953 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2954 libopenh264_encoder_deps="libopenh264"
2955 libopenjpeg_decoder_deps="libopenjpeg"
2956 libopenjpeg_encoder_deps="libopenjpeg"
2957 libopenmpt_demuxer_deps="libopenmpt"
2958 libopus_decoder_deps="libopus"
2959 libopus_encoder_deps="libopus"
2960 libopus_encoder_select="audio_frame_queue"
2961 librsvg_decoder_deps="librsvg"
2962 libshine_encoder_deps="libshine"
2963 libshine_encoder_select="audio_frame_queue"
2964 libspeex_decoder_deps="libspeex"
2965 libspeex_encoder_deps="libspeex"
2966 libspeex_encoder_select="audio_frame_queue"
2967 libtheora_encoder_deps="libtheora"
2968 libtwolame_encoder_deps="libtwolame"
2969 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2970 libvorbis_decoder_deps="libvorbis"
2971 libvorbis_encoder_deps="libvorbis libvorbisenc"
2972 libvorbis_encoder_select="audio_frame_queue"
2973 libvpx_vp8_decoder_deps="libvpx"
2974 libvpx_vp8_encoder_deps="libvpx"
2975 libvpx_vp9_decoder_deps="libvpx"
2976 libvpx_vp9_encoder_deps="libvpx"
2977 libwavpack_encoder_deps="libwavpack"
2978 libwavpack_encoder_select="audio_frame_queue"
2979 libwebp_encoder_deps="libwebp"
2980 libwebp_anim_encoder_deps="libwebp"
2981 libx262_encoder_deps="libx262"
2982 libx264_encoder_deps="libx264"
2983 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2984 libx264rgb_encoder_select="libx264_encoder"
2985 libx265_encoder_deps="libx265"
2986 libxavs_encoder_deps="libxavs"
2987 libxvid_encoder_deps="libxvid"
2988 libzvbi_teletext_decoder_deps="libzvbi"
2989 videotoolbox_suggest="coreservices"
2990 videotoolbox_deps="corefoundation coremedia corevideo"
2991 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2992
2993 # demuxers / muxers
2994 ac3_demuxer_select="ac3_parser"
2995 aiff_muxer_select="iso_media"
2996 asf_demuxer_select="riffdec"
2997 asf_o_demuxer_select="riffdec"
2998 asf_muxer_select="riffenc"
2999 asf_stream_muxer_select="asf_muxer"
3000 avi_demuxer_select="iso_media riffdec exif"
3001 avi_muxer_select="riffenc"
3002 caf_demuxer_select="iso_media riffdec"
3003 caf_muxer_select="iso_media"
3004 dash_muxer_select="mp4_muxer"
3005 dash_demuxer_deps="libxml2"
3006 dirac_demuxer_select="dirac_parser"
3007 dts_demuxer_select="dca_parser"
3008 dtshd_demuxer_select="dca_parser"
3009 dv_demuxer_select="dvprofile"
3010 dv_muxer_select="dvprofile"
3011 dxa_demuxer_select="riffdec"
3012 eac3_demuxer_select="ac3_parser"
3013 f4v_muxer_select="mov_muxer"
3014 fifo_muxer_deps="threads"
3015 flac_demuxer_select="flac_parser"
3016 hds_muxer_select="flv_muxer"
3017 hls_muxer_select="mpegts_muxer"
3018 hls_muxer_suggest="gcrypt openssl"
3019 image2_alias_pix_demuxer_select="image2_demuxer"
3020 image2_brender_pix_demuxer_select="image2_demuxer"
3021 ipod_muxer_select="mov_muxer"
3022 ismv_muxer_select="mov_muxer"
3023 matroska_audio_muxer_select="matroska_muxer"
3024 matroska_demuxer_select="iso_media riffdec"
3025 matroska_demuxer_suggest="bzlib lzo zlib"
3026 matroska_muxer_select="iso_media riffenc"
3027 mmf_muxer_select="riffenc"
3028 mov_demuxer_select="iso_media riffdec"
3029 mov_demuxer_suggest="zlib"
3030 mov_muxer_select="iso_media riffenc rtpenc_chain"
3031 mp3_demuxer_select="mpegaudio_parser"
3032 mp3_muxer_select="mpegaudioheader"
3033 mp4_muxer_select="mov_muxer"
3034 mpegts_demuxer_select="iso_media"
3035 mpegts_muxer_select="adts_muxer latm_muxer"
3036 mpegtsraw_demuxer_select="mpegts_demuxer"
3037 mxf_d10_muxer_select="mxf_muxer"
3038 mxf_opatom_muxer_select="mxf_muxer"
3039 nut_muxer_select="riffenc"
3040 nuv_demuxer_select="riffdec"
3041 oga_muxer_select="ogg_muxer"
3042 ogg_demuxer_select="dirac_parse"
3043 ogv_muxer_select="ogg_muxer"
3044 opus_muxer_select="ogg_muxer"
3045 psp_muxer_select="mov_muxer"
3046 rtp_demuxer_select="sdp_demuxer"
3047 rtp_muxer_select="golomb"
3048 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3049 rtsp_demuxer_select="http_protocol rtpdec"
3050 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3051 sap_demuxer_select="sdp_demuxer"
3052 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3053 sdp_demuxer_select="rtpdec"
3054 smoothstreaming_muxer_select="ismv_muxer"
3055 spdif_demuxer_select="adts_header"
3056 spdif_muxer_select="adts_header"
3057 spx_muxer_select="ogg_muxer"
3058 swf_demuxer_suggest="zlib"
3059 tak_demuxer_select="tak_parser"
3060 tg2_muxer_select="mov_muxer"
3061 tgp_muxer_select="mov_muxer"
3062 vobsub_demuxer_select="mpegps_demuxer"
3063 w64_demuxer_select="wav_demuxer"
3064 w64_muxer_select="wav_muxer"
3065 wav_demuxer_select="riffdec"
3066 wav_muxer_select="riffenc"
3067 webm_muxer_select="iso_media riffenc"
3068 webm_dash_manifest_demuxer_select="matroska_demuxer"
3069 wtv_demuxer_select="mpegts_demuxer riffdec"
3070 wtv_muxer_select="mpegts_muxer riffenc"
3071 xmv_demuxer_select="riffdec"
3072 xwma_demuxer_select="riffdec"
3073
3074 # indevs / outdevs
3075 alsa_indev_deps="alsa"
3076 alsa_outdev_deps="alsa"
3077 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3078 avfoundation_indev_suggest="coregraphics applicationservices"
3079 avfoundation_indev_extralibs="-framework Foundation"
3080 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3081 caca_outdev_deps="libcaca"
3082 decklink_deps_any="libdl LoadLibrary"
3083 decklink_indev_deps="decklink threads"
3084 decklink_indev_extralibs="-lstdc++"
3085 decklink_outdev_deps="decklink threads"
3086 decklink_outdev_extralibs="-lstdc++"
3087 libndi_newtek_indev_deps="libndi_newtek"
3088 libndi_newtek_indev_extralibs="-lndi"
3089 libndi_newtek_outdev_deps="libndi_newtek"
3090 libndi_newtek_outdev_extralibs="-lndi"
3091 dshow_indev_deps="IBaseFilter"
3092 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3093 fbdev_indev_deps="linux_fb_h"
3094 fbdev_outdev_deps="linux_fb_h"
3095 gdigrab_indev_deps="CreateDIBSection"
3096 gdigrab_indev_extralibs="-lgdi32"
3097 gdigrab_indev_select="bmp_decoder"
3098 iec61883_indev_deps="libiec61883"
3099 jack_indev_deps="libjack"
3100 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3101 kmsgrab_indev_deps="libdrm"
3102 lavfi_indev_deps="avfilter"
3103 libcdio_indev_deps="libcdio"
3104 libdc1394_indev_deps="libdc1394"
3105 openal_indev_deps="openal"
3106 opengl_outdev_deps="opengl"
3107 oss_indev_deps_any="sys_soundcard_h"
3108 oss_outdev_deps_any="sys_soundcard_h"
3109 pulse_indev_deps="libpulse"
3110 pulse_outdev_deps="libpulse"
3111 sdl2_outdev_deps="sdl2"
3112 sndio_indev_deps="sndio"
3113 sndio_outdev_deps="sndio"
3114 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3115 v4l2_indev_suggest="libv4l2"
3116 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3117 v4l2_outdev_suggest="libv4l2"
3118 vfwcap_indev_deps="vfw32 vfwcap_defines"
3119 xcbgrab_indev_deps="libxcb"
3120 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3121 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3122 xv_outdev_extralibs="-lXv -lX11 -lXext"
3123
3124 # protocols
3125 async_protocol_deps="threads"
3126 bluray_protocol_deps="libbluray"
3127 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3128 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3129 ffrtmpcrypt_protocol_select="tcp_protocol"
3130 ffrtmphttp_protocol_conflict="librtmp_protocol"
3131 ffrtmphttp_protocol_select="http_protocol"
3132 ftp_protocol_select="tcp_protocol"
3133 gopher_protocol_select="network"
3134 http_protocol_select="tcp_protocol"
3135 http_protocol_suggest="zlib"
3136 httpproxy_protocol_select="tcp_protocol"
3137 httpproxy_protocol_suggest="zlib"
3138 https_protocol_select="tls_protocol"
3139 https_protocol_suggest="zlib"
3140 icecast_protocol_select="http_protocol"
3141 librtmp_protocol_deps="librtmp"
3142 librtmpe_protocol_deps="librtmp"
3143 librtmps_protocol_deps="librtmp"
3144 librtmpt_protocol_deps="librtmp"
3145 librtmpte_protocol_deps="librtmp"
3146 libsmbclient_protocol_deps="libsmbclient gplv3"
3147 libssh_protocol_deps="libssh"
3148 libtls_conflict="openssl gnutls"
3149 mmsh_protocol_select="http_protocol"
3150 mmst_protocol_select="network"
3151 rtmp_protocol_conflict="librtmp_protocol"
3152 rtmp_protocol_select="tcp_protocol"
3153 rtmp_protocol_suggest="zlib"
3154 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3155 rtmpe_protocol_suggest="zlib"
3156 rtmps_protocol_conflict="librtmp_protocol"
3157 rtmps_protocol_select="tls_protocol"
3158 rtmps_protocol_suggest="zlib"
3159 rtmpt_protocol_select="ffrtmphttp_protocol"
3160 rtmpt_protocol_suggest="zlib"
3161 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3162 rtmpte_protocol_suggest="zlib"
3163 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3164 rtmpts_protocol_suggest="zlib"
3165 rtp_protocol_select="udp_protocol"
3166 schannel_conflict="openssl gnutls libtls"
3167 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3168 sctp_protocol_select="network"
3169 securetransport_conflict="openssl gnutls libtls"
3170 srtp_protocol_select="rtp_protocol srtp"
3171 tcp_protocol_select="network"
3172 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3173 tls_protocol_select="tcp_protocol"
3174 udp_protocol_select="network"
3175 udplite_protocol_select="network"
3176 unix_protocol_deps="sys_un_h"
3177 unix_protocol_select="network"
3178
3179 # filters
3180 afftfilt_filter_deps="avcodec"
3181 afftfilt_filter_select="fft"
3182 afir_filter_deps="avcodec"
3183 afir_filter_select="fft"
3184 amovie_filter_deps="avcodec avformat"
3185 aresample_filter_deps="swresample"
3186 ass_filter_deps="libass"
3187 atempo_filter_deps="avcodec"
3188 atempo_filter_select="rdft"
3189 azmq_filter_deps="libzmq"
3190 blackframe_filter_deps="gpl"
3191 boxblur_filter_deps="gpl"
3192 bs2b_filter_deps="libbs2b"
3193 colormatrix_filter_deps="gpl"
3194 convolve_filter_deps="avcodec"
3195 convolve_filter_select="fft"
3196 coreimage_filter_deps="coreimage appkit"
3197 coreimage_filter_extralibs="-framework OpenGL"
3198 coreimagesrc_filter_deps="coreimage appkit"
3199 coreimagesrc_filter_extralibs="-framework OpenGL"
3200 cover_rect_filter_deps="avcodec avformat gpl"
3201 cropdetect_filter_deps="gpl"
3202 deconvolve_filter_deps="avcodec"
3203 deconvolve_filter_select="fft"
3204 deinterlace_qsv_filter_deps="libmfx"
3205 deinterlace_vaapi_filter_deps="vaapi"
3206 delogo_filter_deps="gpl"
3207 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3208 deshake_filter_select="pixelutils"
3209 drawtext_filter_deps="libfreetype"
3210 drawtext_filter_suggest="libfontconfig libfribidi"
3211 elbg_filter_deps="avcodec"
3212 eq_filter_deps="gpl"
3213 fftfilt_filter_deps="avcodec"
3214 fftfilt_filter_select="rdft"
3215 find_rect_filter_deps="avcodec avformat gpl"
3216 firequalizer_filter_deps="avcodec"
3217 firequalizer_filter_select="rdft"
3218 flite_filter_deps="libflite"
3219 framerate_filter_select="pixelutils"
3220 frei0r_filter_deps="frei0r libdl"
3221 frei0r_src_filter_deps="frei0r libdl"
3222 fspp_filter_deps="gpl"
3223 geq_filter_deps="gpl"
3224 histeq_filter_deps="gpl"
3225 hqdn3d_filter_deps="gpl"
3226 interlace_filter_deps="gpl"
3227 kerndeint_filter_deps="gpl"
3228 ladspa_filter_deps="ladspa libdl"
3229 lv2_filter_deps="lv2"
3230 mcdeint_filter_deps="avcodec gpl"
3231 movie_filter_deps="avcodec avformat"
3232 mpdecimate_filter_deps="gpl"
3233 mpdecimate_filter_select="pixelutils"
3234 mptestsrc_filter_deps="gpl"
3235 negate_filter_deps="lut_filter"
3236 nnedi_filter_deps="gpl"
3237 ocr_filter_deps="libtesseract"
3238 ocv_filter_deps="libopencv"
3239 openclsrc_filter_deps="opencl"
3240 overlay_opencl_filter_deps="opencl"
3241 overlay_qsv_filter_deps="libmfx"
3242 overlay_qsv_filter_select="qsvvpp"
3243 owdenoise_filter_deps="gpl"
3244 pan_filter_deps="swresample"
3245 perspective_filter_deps="gpl"
3246 phase_filter_deps="gpl"
3247 pp7_filter_deps="gpl"
3248 pp_filter_deps="gpl postproc"
3249 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3250 program_opencl_filter_deps="opencl"
3251 pullup_filter_deps="gpl"
3252 removelogo_filter_deps="avcodec avformat swscale"
3253 repeatfields_filter_deps="gpl"
3254 resample_filter_deps="avresample"
3255 rubberband_filter_deps="librubberband"
3256 sab_filter_deps="gpl swscale"
3257 scale2ref_filter_deps="swscale"
3258 scale_filter_deps="swscale"
3259 scale_qsv_filter_deps="libmfx"
3260 select_filter_select="pixelutils"
3261 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3262 showcqt_filter_deps="avcodec avformat swscale"
3263 showcqt_filter_suggest="libfontconfig libfreetype"
3264 showcqt_filter_select="fft"
3265 showfreqs_filter_deps="avcodec"
3266 showfreqs_filter_select="fft"
3267 showspectrum_filter_deps="avcodec"
3268 showspectrum_filter_select="fft"
3269 showspectrumpic_filter_deps="avcodec"
3270 showspectrumpic_filter_select="fft"
3271 signature_filter_deps="gpl avcodec avformat"
3272 smartblur_filter_deps="gpl swscale"
3273 sofalizer_filter_deps="libmysofa avcodec"
3274 sofalizer_filter_select="fft"
3275 spectrumsynth_filter_deps="avcodec"
3276 spectrumsynth_filter_select="fft"
3277 spp_filter_deps="gpl avcodec"
3278 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3279 stereo3d_filter_deps="gpl"
3280 subtitles_filter_deps="avformat avcodec libass"
3281 super2xsai_filter_deps="gpl"
3282 pixfmts_super2xsai_test_deps="super2xsai_filter"
3283 tinterlace_filter_deps="gpl"
3284 tinterlace_merge_test_deps="tinterlace_filter"
3285 tinterlace_pad_test_deps="tinterlace_filter"
3286 tonemap_filter_deps="const_nan"
3287 unsharp_opencl_filter_deps="opencl"
3288 uspp_filter_deps="gpl avcodec"
3289 vaguedenoiser_filter_deps="gpl"
3290 vidstabdetect_filter_deps="libvidstab"
3291 vidstabtransform_filter_deps="libvidstab"
3292 libvmaf_filter_deps="libvmaf pthreads"
3293 zmq_filter_deps="libzmq"
3294 zoompan_filter_deps="swscale"
3295 zscale_filter_deps="libzimg const_nan"
3296 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3297 vpp_qsv_filter_deps="libmfx"
3298 vpp_qsv_filter_select="qsvvpp"
3299
3300 # examples
3301 avio_dir_cmd_deps="avformat avutil"
3302 avio_reading_deps="avformat avcodec avutil"
3303 decode_audio_example_deps="avcodec avutil"
3304 decode_video_example_deps="avcodec avutil"
3305 demuxing_decoding_example_deps="avcodec avformat avutil"
3306 encode_audio_example_deps="avcodec avutil"
3307 encode_video_example_deps="avcodec avutil"
3308 extract_mvs_example_deps="avcodec avformat avutil"
3309 filter_audio_example_deps="avfilter avutil"
3310 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3311 filtering_video_example_deps="avfilter avcodec avformat avutil"
3312 http_multiclient_example_deps="avformat avutil fork"
3313 hw_decode_example_deps="avcodec avformat avutil"
3314 metadata_example_deps="avformat avutil"
3315 muxing_example_deps="avcodec avformat avutil swscale"
3316 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3317 remuxing_example_deps="avcodec avformat avutil"
3318 resampling_audio_example_deps="avutil swresample"
3319 scaling_video_example_deps="avutil swscale"
3320 transcode_aac_example_deps="avcodec avformat swresample"
3321 transcoding_example_deps="avfilter avcodec avformat avutil"
3322 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3323
3324 # EXTRALIBS_LIST
3325 cpu_init_extralibs="pthreads_extralibs"
3326 cws2fws_extralibs="zlib_extralibs"
3327
3328 # libraries, in linking order
3329 avcodec_deps="avutil"
3330 avcodec_suggest="libm"
3331 avcodec_select="null_bsf"
3332 avdevice_deps="avformat avcodec avutil"
3333 avdevice_suggest="libm"
3334 avfilter_deps="avutil"
3335 avfilter_suggest="libm"
3336 avformat_deps="avcodec avutil"
3337 avformat_suggest="libm network zlib"
3338 avresample_deps="avutil"
3339 avresample_suggest="libm"
3340 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3341 postproc_deps="avutil gpl"
3342 postproc_suggest="libm"
3343 swresample_deps="avutil"
3344 swresample_suggest="libm libsoxr"
3345 swscale_deps="avutil"
3346 swscale_suggest="libm"
3347
3348 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3349 avfilter_extralibs="pthreads_extralibs"
3350 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3351
3352 # programs
3353 ffmpeg_deps="avcodec avfilter avformat swresample"
3354 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3355                null_filter
3356                trim_filter"
3357 ffmpeg_suggest="ole32 psapi shell32"
3358 ffplay_deps="avcodec avformat swscale swresample sdl2"
3359 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3360 ffplay_suggest="shell32"
3361 ffprobe_deps="avcodec avformat"
3362 ffprobe_suggest="shell32"
3363
3364 # documentation
3365 podpages_deps="perl"
3366 manpages_deps="perl pod2man"
3367 htmlpages_deps="perl"
3368 htmlpages_deps_any="makeinfo_html texi2html"
3369 txtpages_deps="perl makeinfo"
3370 doc_deps_any="manpages htmlpages podpages txtpages"
3371
3372 # default parameters
3373
3374 logfile="ffbuild/config.log"
3375
3376 # installation paths
3377 prefix_default="/usr/local"
3378 bindir_default='${prefix}/bin'
3379 datadir_default='${prefix}/share/ffmpeg'
3380 docdir_default='${prefix}/share/doc/ffmpeg'
3381 incdir_default='${prefix}/include'
3382 libdir_default='${prefix}/lib'
3383 mandir_default='${prefix}/share/man'
3384
3385 # toolchain
3386 ar_default="ar"
3387 cc_default="gcc"
3388 cxx_default="g++"
3389 host_cc_default="gcc"
3390 doxygen_default="doxygen"
3391 install="install"
3392 ln_s_default="ln -s -f"
3393 nm_default="nm -g"
3394 pkg_config_default=pkg-config
3395 ranlib_default="ranlib"
3396 strip_default="strip"
3397 version_script='--version-script'
3398 objformat="elf32"
3399 x86asmexe_default="nasm"
3400 windres_default="windres"
3401 nvcc_default="nvcc"
3402 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3403 striptype="direct"
3404
3405 # OS
3406 target_os_default=$(tolower $(uname -s))
3407 host_os=$target_os_default
3408
3409 # machine
3410 if test "$target_os_default" = aix; then
3411     arch_default=$(uname -p)
3412     strip_default="strip -X32_64"
3413 else
3414     arch_default=$(uname -m)
3415 fi
3416 cpu="generic"
3417 intrinsics="none"
3418
3419 # configurable options
3420 enable $PROGRAM_LIST
3421 enable $DOCUMENT_LIST
3422 enable $EXAMPLE_LIST
3423 enable $(filter_out avresample $LIBRARY_LIST)
3424 enable stripping
3425
3426 enable asm
3427 enable debug
3428 enable doc
3429 enable faan faandct faanidct
3430 enable optimizations
3431 enable runtime_cpudetect
3432 enable safe_bitstream_reader
3433 enable static
3434 enable swscale_alpha
3435 enable valgrind_backtrace
3436
3437 sws_max_filter_size_default=256
3438 set_default sws_max_filter_size
3439
3440 # internal components are enabled by default
3441 enable $EXTRALIBS_LIST
3442
3443 # Avoid external, non-system, libraries getting enabled by dependency resolution
3444 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3445
3446 # build settings
3447 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3448 LIBPREF="lib"
3449 LIBSUF=".a"
3450 FULLNAME='$(NAME)$(BUILDSUF)'
3451 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3452 SLIBPREF="lib"
3453 SLIBSUF=".so"
3454 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3455 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3456 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3457 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3458 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3459 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3460 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3461
3462 asflags_filter=echo
3463 cflags_filter=echo
3464 ldflags_filter=echo
3465
3466 AS_C='-c'
3467 AS_O='-o $@'
3468 CC_C='-c'
3469 CC_E='-E -o $@'
3470 CC_O='-o $@'
3471 CXX_C='-c'
3472 CXX_O='-o $@'
3473 OBJCC_C='-c'
3474 OBJCC_E='-E -o $@'
3475 OBJCC_O='-o $@'
3476 X86ASM_O='-o $@'
3477 LD_O='-o $@'
3478 LD_LIB='-l%'
3479 LD_PATH='-L'
3480 HOSTCC_C='-c'
3481 HOSTCC_E='-E -o $@'
3482 HOSTCC_O='-o $@'
3483 HOSTLD_O='-o $@'
3484 NVCC_C='-c'
3485 NVCC_O='-o $@'
3486
3487 host_extralibs='-lm'
3488 host_cflags_filter=echo
3489 host_ldflags_filter=echo
3490
3491 target_path='$(CURDIR)'
3492
3493 # since the object filename is not given with the -MM flag, the compiler
3494 # is only able to print the basename, and we must add the path ourselves
3495 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3496 DEPFLAGS='-MM'
3497
3498 mkdir -p ffbuild
3499
3500 # find source path
3501 if test -f configure; then
3502     source_path=.
3503 else
3504     source_path=$(cd $(dirname "$0"); pwd)
3505     case "$source_path" in
3506         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3507     esac
3508     test -e "$source_path/config.h" &&
3509         die "Out of tree builds are impossible with config.h in source dir."
3510 fi
3511
3512 for v in "$@"; do
3513     r=${v#*=}
3514     l=${v%"$r"}
3515     r=$(sh_quote "$r")
3516     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3517 done
3518
3519 find_things(){
3520     thing=$1
3521     pattern=$2
3522     file=$source_path/$3
3523     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3524 }
3525
3526 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3527 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3528 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3529 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3530 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3531 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3532 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3533 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3534
3535 find_things_extern(){
3536     thing=$1
3537     pattern=$2
3538     file=$source_path/$3
3539     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3540 }
3541
3542 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3543 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3544 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3545
3546 AVCODEC_COMPONENTS_LIST="
3547     $BSF_LIST
3548     $DECODER_LIST
3549     $ENCODER_LIST
3550     $HWACCEL_LIST
3551     $PARSER_LIST
3552 "
3553
3554 AVDEVICE_COMPONENTS_LIST="
3555     $INDEV_LIST
3556     $OUTDEV_LIST
3557 "
3558
3559 AVFILTER_COMPONENTS_LIST="
3560     $FILTER_LIST
3561 "
3562
3563 AVFORMAT_COMPONENTS_LIST="
3564     $DEMUXER_LIST
3565     $MUXER_LIST
3566     $PROTOCOL_LIST
3567 "
3568
3569 ALL_COMPONENTS="
3570     $AVCODEC_COMPONENTS_LIST
3571     $AVDEVICE_COMPONENTS_LIST
3572     $AVFILTER_COMPONENTS_LIST
3573     $AVFORMAT_COMPONENTS_LIST
3574 "
3575
3576 for n in $COMPONENT_LIST; do
3577     v=$(toupper ${n%s})_LIST
3578     eval enable \$$v
3579     eval ${n}_if_any="\$$v"
3580 done
3581
3582 enable $ARCH_EXT_LIST
3583
3584 die_unknown(){
3585     echo "Unknown option \"$1\"."
3586     echo "See $0 --help for available options."
3587     exit 1
3588 }
3589
3590 print_in_columns() {
3591     cols=$(expr $ncols / 24)
3592     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3593 }
3594
3595 show_list() {
3596     suffix=_$1
3597     shift
3598     echo $* | sed s/$suffix//g | print_in_columns
3599     exit 0
3600 }
3601
3602 rand_list(){
3603     IFS=', '
3604     set -- $*
3605     unset IFS
3606     for thing; do
3607         comp=${thing%:*}
3608         prob=${thing#$comp}
3609         prob=${prob#:}
3610         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3611         echo "prob ${prob:-0.5}"
3612         printf '%s\n' $comp
3613     done
3614 }
3615
3616 do_random(){
3617     action=$1
3618     shift
3619     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3620     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3621 }
3622
3623 for opt do
3624     optval="${opt#*=}"
3625     case "$opt" in
3626         --extra-ldflags=*)
3627             add_ldflags $optval
3628         ;;
3629         --extra-ldexeflags=*)
3630             add_ldexeflags $optval
3631         ;;
3632         --extra-ldsoflags=*)
3633             add_ldsoflags $optval
3634         ;;
3635         --extra-ldlibflags=*)
3636             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3637                  "removed in the future. Use --extra-ldsoflags instead."
3638             add_ldsoflags $optval
3639         ;;
3640         --extra-libs=*)
3641             add_extralibs $optval
3642         ;;
3643         --disable-devices)
3644             disable $INDEV_LIST $OUTDEV_LIST
3645         ;;
3646         --enable-debug=*)
3647             debuglevel="$optval"
3648         ;;
3649         --disable-programs)
3650             disable $PROGRAM_LIST
3651         ;;
3652         --disable-everything)
3653             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3654         ;;
3655         --disable-all)
3656             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3657             disable $LIBRARY_LIST $PROGRAM_LIST doc
3658             enable avutil
3659         ;;
3660         --enable-random|--disable-random)
3661             action=${opt%%-random}
3662             do_random ${action#--} $COMPONENT_LIST
3663         ;;
3664         --enable-random=*|--disable-random=*)
3665             action=${opt%%-random=*}
3666             do_random ${action#--} $optval
3667         ;;
3668         --enable-sdl)
3669             enable sdl2
3670         ;;
3671         --enable-*=*|--disable-*=*)
3672             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3673             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3674             eval list=\$$(toupper $thing)_LIST
3675             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3676             list=$(filter "$name" $list)
3677             [ "$list" = "" ] && warn "Option $opt did not match anything"
3678             $action $list
3679         ;;
3680         --enable-yasm|--disable-yasm)
3681             warn "The ${opt} option is only provided for compatibility and will be\n"\
3682                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3683             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3684         ;;
3685         --yasmexe=*)
3686             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3687                  "removed in the future. Use --x86asmexe instead."
3688             x86asmexe="$optval"
3689         ;;
3690         --enable-?*|--disable-?*)
3691             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3692             if is_in $option $COMPONENT_LIST; then
3693                 test $action = disable && action=unset
3694                 eval $action \$$(toupper ${option%s})_LIST
3695             elif is_in $option $CMDLINE_SELECT; then
3696                 $action $option
3697             else
3698                 die_unknown $opt
3699             fi
3700         ;;
3701         --list-*)
3702             NAME="${opt#--list-}"
3703             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3704             NAME=${NAME%s}
3705             eval show_list $NAME \$$(toupper $NAME)_LIST
3706         ;;
3707         --help|-h) show_help
3708         ;;
3709         --quiet|-q) quiet=yes
3710         ;;
3711         --fatal-warnings) enable fatal_warnings
3712         ;;
3713         --libfuzzer=*)
3714             libfuzzer_path="$optval"
3715         ;;
3716         *)
3717             optname="${opt%%=*}"
3718             optname="${optname#--}"
3719             optname=$(echo "$optname" | sed 's/-/_/g')
3720             if is_in $optname $CMDLINE_SET; then
3721                 eval $optname='$optval'
3722             elif is_in $optname $CMDLINE_APPEND; then
3723                 append $optname "$optval"
3724             else
3725                 die_unknown $opt
3726             fi
3727         ;;
3728     esac
3729 done
3730
3731 for e in $env; do
3732     eval "export $e"
3733 done
3734
3735 if disabled autodetect; then
3736
3737     # Unless iconv is explicitely disabled by the user, we still want to probe
3738     # for the iconv from the libc.
3739     disabled iconv || enable libc_iconv
3740
3741     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3742     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3743 fi
3744 # Mark specifically enabled, but normally autodetected libraries as requested.
3745 for lib in $AUTODETECT_LIBS; do
3746     enabled $lib && request $lib
3747 done
3748 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3749 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3750 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3751
3752 disabled logging && logfile=/dev/null
3753
3754 # command line configuration sanity checks
3755
3756 # we need to build at least one lib type
3757 if ! enabled_any static shared; then
3758     cat <<EOF
3759 At least one library type must be built.
3760 Specify --enable-static to build the static libraries or --enable-shared to
3761 build the shared libraries as well. To only build the shared libraries specify
3762 --disable-static in addition to --enable-shared.
3763 EOF
3764     exit 1
3765 fi
3766
3767 die_license_disabled() {
3768     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3769 }
3770
3771 die_license_disabled_gpl() {
3772     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3773 }
3774
3775 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3776 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3777
3778 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3779 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3780
3781 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3782
3783 enabled_all gnutls openssl &&
3784     die "GnuTLS and OpenSSL must not be enabled at the same time."
3785
3786 # Disable all the library-specific components if the library itself
3787 # is disabled, see AVCODEC_LIST and following _LIST variables.
3788
3789 disable_components(){
3790     disabled ${1} && disable $(
3791         eval components="\$$(toupper ${1})_COMPONENTS"
3792         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3793     )
3794 }
3795
3796 map 'disable_components $v' $LIBRARY_LIST
3797
3798 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3799 set >> $logfile
3800
3801 test -n "$valgrind" && toolchain="valgrind-memcheck"
3802
3803 enabled ossfuzz && {
3804     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3805     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3806 }
3807
3808 case "$toolchain" in
3809     *-asan)
3810         cc_default="${toolchain%-asan}"
3811         add_cflags  -fsanitize=address
3812         add_ldflags -fsanitize=address
3813     ;;
3814     *-msan)
3815         cc_default="${toolchain%-msan}"
3816         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3817         add_ldflags -fsanitize=memory
3818     ;;
3819     *-tsan)
3820         cc_default="${toolchain%-tsan}"
3821         add_cflags  -fsanitize=thread -fPIE
3822         add_ldflags -fsanitize=thread -pie
3823         case "$toolchain" in
3824             gcc-tsan)
3825                 add_cflags  -fPIC
3826                 add_ldflags -fPIC
3827                 ;;
3828         esac
3829     ;;
3830     *-usan)
3831         cc_default="${toolchain%-usan}"
3832         add_cflags  -fsanitize=undefined
3833         add_ldflags -fsanitize=undefined
3834     ;;
3835     valgrind-*)
3836         target_exec_default="valgrind"
3837         case "$toolchain" in
3838             valgrind-massif)
3839                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3840                 ;;
3841             valgrind-memcheck)
3842                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3843                 ;;
3844         esac
3845     ;;
3846     msvc)
3847         # Check whether the current MSVC version needs the C99 converter.
3848         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3849         # support enough of C99 to build ffmpeg. Default to the new
3850         # behaviour if the regexp was unable to match anything, since this
3851         # successfully parses the version number of existing supported
3852         # versions that require the converter (MSVC 2010 and 2012).
3853         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3854         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3855             cc_default="cl"
3856             cxx_default="cl"
3857         else
3858             cc_default="c99wrap cl"
3859             cxx_default="c99wrap cl"
3860         fi
3861         ld_default="$source_path/compat/windows/mslink"
3862         nm_default="dumpbin -symbols"
3863         ar_default="lib"
3864         case "$arch" in
3865         aarch64|arm64)
3866             as_default="armasm64"
3867             ;;
3868         arm*)
3869             as_default="armasm"
3870             ;;
3871         esac
3872         target_os_default="win32"
3873         # Use a relative path for TMPDIR. This makes sure all the
3874         # ffconf temp files are written with a relative path, avoiding
3875         # issues with msys/win32 path conversion for MSVC parameters
3876         # such as -Fo<file> or -out:<file>.
3877         TMPDIR=.
3878     ;;
3879     icl)
3880         cc_default="icl"
3881         ld_default="xilink"
3882         nm_default="dumpbin -symbols"
3883         ar_default="xilib"
3884         target_os_default="win32"
3885         TMPDIR=.
3886     ;;
3887     gcov)
3888         add_cflags  -fprofile-arcs -ftest-coverage
3889         add_ldflags -fprofile-arcs -ftest-coverage
3890     ;;
3891     llvm-cov)
3892         add_cflags -fprofile-arcs -ftest-coverage
3893         add_ldflags --coverage
3894     ;;
3895     hardened)
3896         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3897         add_cflags   -fno-strict-overflow -fstack-protector-all
3898         add_ldflags  -Wl,-z,relro -Wl,-z,now
3899         add_cflags   -fPIE
3900         add_ldexeflags -fPIE -pie
3901     ;;
3902     ?*)
3903         die "Unknown toolchain $toolchain"
3904     ;;
3905 esac
3906
3907 if test -n "$cross_prefix"; then
3908     test -n "$arch" && test -n "$target_os" ||
3909         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3910     enable cross_compile
3911 fi
3912
3913 ar_default="${cross_prefix}${ar_default}"
3914 cc_default="${cross_prefix}${cc_default}"
3915 cxx_default="${cross_prefix}${cxx_default}"
3916 nm_default="${cross_prefix}${nm_default}"
3917 pkg_config_default="${cross_prefix}${pkg_config_default}"
3918 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3919     ranlib_default="${cross_prefix}${ranlib_default} -D"
3920 else
3921     ranlib_default="${cross_prefix}${ranlib_default}"
3922 fi
3923 strip_default="${cross_prefix}${strip_default}"
3924 windres_default="${cross_prefix}${windres_default}"
3925
3926 sysinclude_default="${sysroot}/usr/include"
3927
3928 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3929     target_exec target_os x86asmexe nvcc
3930 enabled cross_compile || host_cc_default=$cc
3931 set_default host_cc
3932
3933 pkg_config_fail_message=""
3934 if ! $pkg_config --version >/dev/null 2>&1; then
3935     warn "$pkg_config not found, library detection may fail."
3936     pkg_config=false
3937 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3938     pkg_config_fail_message="
3939 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3940 fi
3941
3942 if test $doxygen != $doxygen_default && \
3943   ! $doxygen --version >/dev/null 2>&1; then
3944     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3945 fi
3946
3947 exesuf() {
3948     case $1 in
3949         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3950     esac
3951 }
3952
3953 EXESUF=$(exesuf $target_os)
3954 HOSTEXESUF=$(exesuf $host_os)
3955
3956 # set temporary file name
3957 : ${TMPDIR:=$TEMPDIR}
3958 : ${TMPDIR:=$TMP}
3959 : ${TMPDIR:=/tmp}
3960
3961 if [ -n "$tempprefix" ] ; then
3962     mktemp(){
3963         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3964         echo "$tmpname"
3965         mkdir "$tmpname"
3966     }
3967 elif ! check_cmd mktemp -u XXXXXX; then
3968     # simple replacement for missing mktemp
3969     # NOT SAFE FOR GENERAL USE
3970     mktemp(){
3971         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3972         echo "$tmpname"
3973         mkdir "$tmpname"
3974     }
3975 fi
3976
3977 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3978     die "Unable to create temporary directory in $TMPDIR."
3979
3980 tmpfile(){
3981     tmp="${FFTMPDIR}/test"$2
3982     (set -C; exec > $tmp) 2> /dev/null ||
3983         die "Unable to create temporary file in $FFTMPDIR."
3984     eval $1=$tmp
3985 }
3986
3987 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3988 trap 'exit 2' INT
3989
3990 tmpfile TMPASM .asm
3991 tmpfile TMPC   .c
3992 tmpfile TMPCPP .cpp
3993 tmpfile TMPE   $EXESUF
3994 tmpfile TMPH   .h
3995 tmpfile TMPM   .m
3996 tmpfile TMPO   .o
3997 tmpfile TMPS   .S
3998 tmpfile TMPSH  .sh
3999 tmpfile TMPV   .ver
4000
4001 unset -f mktemp
4002
4003 chmod +x $TMPE
4004
4005 # make sure we can execute files in $TMPDIR
4006 cat > $TMPSH 2>> $logfile <<EOF
4007 #! /bin/sh
4008 EOF
4009 chmod +x $TMPSH >> $logfile 2>&1
4010 if ! $TMPSH >> $logfile 2>&1; then
4011     cat <<EOF
4012 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4013 variable to another directory and make sure that it is not mounted noexec.
4014 EOF
4015     die "Sanity test failed."
4016 fi
4017
4018 armasm_flags(){
4019     for flag; do
4020         case $flag in
4021             # Filter out MSVC cl.exe options from cflags that shouldn't
4022             # be passed to gas-preprocessor
4023             -M[TD]*)                                            ;;
4024             *)                  echo $flag                      ;;
4025         esac
4026    done
4027 }
4028
4029 cparser_flags(){
4030     for flag; do
4031         case $flag in
4032             -Wno-switch)             echo -Wno-switch-enum ;;
4033             -Wno-format-zero-length) ;;
4034             -Wdisabled-optimization) ;;
4035             -Wno-pointer-sign)       echo -Wno-other ;;
4036             *)                       echo $flag ;;
4037         esac
4038     done
4039 }
4040
4041 msvc_common_flags(){
4042     for flag; do
4043         case $flag in
4044             # In addition to specifying certain flags under the compiler
4045             # specific filters, they must be specified here as well or else the
4046             # generic catch all at the bottom will print the original flag.
4047             -Wall)                ;;
4048             -Wextra)              ;;
4049             -std=c99)             ;;
4050             # Common flags
4051             -fomit-frame-pointer) ;;
4052             -g)                   echo -Z7 ;;
4053             -fno-math-errno)      ;;
4054             -fno-common)          ;;
4055             -fno-signed-zeros)    ;;
4056             -fPIC)                ;;
4057             -mthumb)              ;;
4058             -march=*)             ;;
4059             -lz)                  echo zlib.lib ;;
4060             -lx264)               echo libx264.lib ;;
4061             -lstdc++)             ;;
4062             -l*)                  echo ${flag#-l}.lib ;;
4063             -LARGEADDRESSAWARE)   echo $flag ;;
4064             -L*)                  echo -libpath:${flag#-L} ;;
4065             *)                    echo $flag ;;
4066         esac
4067     done
4068 }
4069
4070 msvc_flags(){
4071     msvc_common_flags "$@"
4072     for flag; do
4073         case $flag in
4074             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4075                                        -wd4554 ;;
4076             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4077                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4078                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4079                                        -wd4307 \
4080                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4081         esac
4082     done
4083 }
4084
4085 icl_flags(){
4086     msvc_common_flags "$@"
4087     for flag; do
4088         case $flag in
4089             # Despite what Intel's documentation says -Wall, which is supported
4090             # on Windows, does enable remarks so disable them here.
4091             -Wall)                echo $flag -Qdiag-disable:remark ;;
4092             -std=c99)             echo -Qstd=c99 ;;
4093             -flto)                echo -ipo ;;
4094         esac
4095     done
4096 }
4097
4098 icc_flags(){
4099     for flag; do
4100         case $flag in
4101             -flto)                echo -ipo ;;
4102             *)                    echo $flag ;;
4103         esac
4104     done
4105 }
4106
4107 suncc_flags(){
4108     for flag; do
4109         case $flag in
4110             -march=*|-mcpu=*)
4111                 case "${flag#*=}" in
4112                     native)                   echo -xtarget=native       ;;
4113                     v9|niagara)               echo -xarch=sparc          ;;
4114                     ultrasparc)               echo -xarch=sparcvis       ;;
4115                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4116                     i586|pentium)             echo -xchip=pentium        ;;
4117                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4118                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4119                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4120                     pentium4*)          echo -xtarget=pentium4           ;;
4121                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4122                     *-sse3)             echo -xarch=sse3                 ;;
4123                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4124                     bonnell)                   echo -xarch=ssse3         ;;
4125                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4126                     westmere)                  echo -xtarget=westmere    ;;
4127                     silvermont)                echo -xarch=sse4_2        ;;
4128                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4129                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4130                                                echo -xarch=avx           ;;
4131                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4132                     btver1)                    echo -xarch=amdsse4a      ;;
4133                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4134                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4135                     k8|opteron|athlon64|athlon-fx)
4136                                                echo -xarch=sse2a         ;;
4137                     athlon*)                   echo -xarch=pentium_proa  ;;
4138                 esac
4139                 ;;
4140             -std=c99)             echo -xc99              ;;
4141             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4142             -fPIC)                echo -KPIC -xcode=pic32 ;;
4143             -W*,*)                echo $flag              ;;
4144             -f*-*|-W*|-mimpure-text)                      ;;
4145             -shared)              echo -G                 ;;
4146             *)                    echo $flag              ;;
4147         esac
4148     done
4149 }
4150
4151 probe_cc(){
4152     pfx=$1
4153     _cc=$2
4154     first=$3
4155
4156     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4157     unset _ld_o _ldflags _ld_lib _ld_path
4158     unset _depflags _DEPCMD _DEPFLAGS
4159     _flags_filter=echo
4160
4161     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4162         true # no-op to avoid reading stdin in following checks
4163     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4164         _type=llvm_gcc
4165         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4166         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4167         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4168         _cflags_speed='-O3'
4169         _cflags_size='-Os'
4170     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4171         _type=gcc
4172         gcc_version=$($_cc --version | head -n1)
4173         gcc_basever=$($_cc -dumpversion)
4174         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4175         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4176         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4177         case $gcc_basever in
4178             2) ;;
4179             2.*) ;;
4180             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4181         esac
4182         if [ "$first" = true ]; then
4183             case $gcc_basever in
4184                 4.2*)
4185                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4186             esac
4187         fi
4188         _cflags_speed='-O3'
4189         _cflags_size='-Os'
4190     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4191         _type=icc
4192         _ident=$($_cc --version | head -n1)
4193         _depflags='-MMD'
4194         _cflags_speed='-O3'
4195         _cflags_size='-Os'
4196         _cflags_noopt='-O1'
4197         _flags_filter=icc_flags
4198     elif $_cc -v 2>&1 | grep -q xlc; then
4199         _type=xlc
4200         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4201         _cflags_speed='-O5'
4202         _cflags_size='-O5 -qcompact'
4203     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4204         test -d "$sysroot" || die "No valid sysroot specified."
4205         _type=armcc
4206         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4207         armcc_conf="$PWD/armcc.conf"
4208         $_cc --arm_linux_configure                 \
4209              --arm_linux_config_file="$armcc_conf" \
4210              --configure_sysroot="$sysroot"        \
4211              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4212              die "Error creating armcc configuration file."
4213         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4214         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4215         as_default="${cross_prefix}gcc"
4216         _depflags='-MMD'
4217         _cflags_speed='-O3'
4218         _cflags_size='-Os'
4219     elif $_cc -v 2>&1 | grep -q clang; then
4220         _type=clang
4221         _ident=$($_cc --version 2>/dev/null | head -n1)
4222         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4223         _cflags_speed='-O3'
4224         _cflags_size='-Oz'
4225     elif $_cc -V 2>&1 | grep -q Sun; then
4226         _type=suncc
4227         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4228         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4229         _DEPFLAGS='-xM1 -xc99'
4230         _ldflags='-std=c99'
4231         _cflags_speed='-O5'
4232         _cflags_size='-O5 -xspace'
4233         _flags_filter=suncc_flags
4234     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4235         _type=pathscale
4236         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4237         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4238         _cflags_speed='-O2'
4239         _cflags_size='-Os'
4240         _flags_filter='filter_out -Wdisabled-optimization'
4241     elif $_cc -v 2>&1 | grep -q Open64; then
4242         _type=open64
4243         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4244         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4245         _cflags_speed='-O2'
4246         _cflags_size='-Os'
4247         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4248     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4249         _type=armasm
4250         _ident=$($_cc | head -n1)
4251         # 4509: "This form of conditional instruction is deprecated"
4252         _flags="-nologo -ignore 4509"
4253         _flags_filter=armasm_flags
4254     elif $_cc 2>&1 | grep -q Intel; then
4255         _type=icl
4256         _ident=$($_cc 2>&1 | head -n1)
4257         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4258         # Not only is O3 broken on 13.x+ but it is slower on all previous
4259         # versions (tested) as well.
4260         _cflags_speed="-O2"
4261         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4262         if $_cc 2>&1 | grep -q Linker; then
4263             _ld_o='-out:$@'
4264         else
4265             _ld_o='-Fe$@'
4266         fi
4267         _cc_o='-Fo$@'
4268         _cc_e='-P'
4269         _flags_filter=icl_flags
4270         _ld_lib='lib%.a'
4271         _ld_path='-libpath:'
4272         # -Qdiag-error to make icl error when seeing certain unknown arguments
4273         _flags='-nologo -Qdiag-error:4044,10157'
4274         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4275         # with MSVC which enables it by default.
4276         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4277         disable stripping
4278     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4279         # lld can emulate multiple different linkers; in ms link.exe mode,
4280         # the -? parameter gives the help output which contains an identifyable
4281         # string, while it gives an error in other modes.
4282         _type=lld-link
4283         # The link.exe mode doesn't have a switch for getting the version,
4284         # but we can force it back to gnu mode and get the version from there.
4285         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4286         _ld_o='-out:$@'
4287         _flags_filter=msvc_flags
4288         _ld_lib='lib%.a'
4289         _ld_path='-libpath:'
4290     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4291         _type=msvc
4292         _ident=$($_cc 2>&1 | head -n1)
4293         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4294         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4295         _cflags_speed="-O2"
4296         _cflags_size="-O1"
4297         _cflags_noopt="-O1"
4298         if $_cc -nologo- 2>&1 | grep -q Linker; then
4299             _ld_o='-out:$@'
4300         else
4301             _ld_o='-Fe$@'
4302         fi
4303         _cc_o='-Fo$@'
4304         _cc_e='-P -Fi$@'
4305         _flags_filter=msvc_flags
4306         _ld_lib='lib%.a'
4307         _ld_path='-libpath:'
4308         _flags='-nologo'
4309         disable stripping
4310     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4311         _type=cparser
4312         _ident=$($_cc --version | head -n1)
4313         _depflags='-MMD'
4314         _cflags_speed='-O4'
4315         _cflags_size='-O2'
4316         _flags_filter=cparser_flags
4317     fi
4318
4319     eval ${pfx}_type=\$_type
4320     eval ${pfx}_ident=\$_ident
4321 }
4322
4323 set_ccvars(){
4324     eval ${1}_C=\${_cc_c-\${${1}_C}}
4325     eval ${1}_E=\${_cc_e-\${${1}_E}}
4326     eval ${1}_O=\${_cc_o-\${${1}_O}}
4327
4328     if [ -n "$_depflags" ]; then
4329         eval ${1}_DEPFLAGS=\$_depflags
4330     else
4331         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4332         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4333         eval DEP${1}FLAGS=\$_flags
4334     fi
4335 }
4336
4337 probe_cc cc "$cc" "true"
4338 cflags_filter=$_flags_filter
4339 cflags_speed=$_cflags_speed
4340 cflags_size=$_cflags_size
4341 cflags_noopt=$_cflags_noopt
4342 add_cflags $_flags $_cflags
4343 cc_ldflags=$_ldflags
4344 set_ccvars CC
4345 set_ccvars CXX
4346
4347 probe_cc hostcc "$host_cc"
4348 host_cflags_filter=$_flags_filter
4349 host_cflags_speed=$_cflags_speed
4350 add_host_cflags  $_flags $_cflags
4351 set_ccvars HOSTCC
4352
4353 test -n "$cc_type" && enable $cc_type ||
4354     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4355
4356 : ${as_default:=$cc}
4357 : ${objcc_default:=$cc}
4358 : ${dep_cc_default:=$cc}
4359 : ${ld_default:=$cc}
4360 : ${host_ld_default:=$host_cc}
4361 set_default ar as objcc dep_cc ld ln_s host_ld windres
4362
4363 probe_cc as "$as"
4364 asflags_filter=$_flags_filter
4365 add_asflags $_flags $_cflags
4366 set_ccvars AS
4367
4368 probe_cc objcc "$objcc"
4369 objcflags_filter=$_flags_filter
4370 add_objcflags $_flags $_cflags
4371 set_ccvars OBJC
4372
4373 probe_cc ld "$ld"
4374 ldflags_filter=$_flags_filter
4375 add_ldflags $_flags $_ldflags
4376 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4377 LD_O=${_ld_o-$LD_O}
4378 LD_LIB=${_ld_lib-$LD_LIB}
4379 LD_PATH=${_ld_path-$LD_PATH}
4380
4381 probe_cc hostld "$host_ld"
4382 host_ldflags_filter=$_flags_filter
4383 add_host_ldflags $_flags $_ldflags
4384 HOSTLD_O=${_ld_o-$HOSTLD_O}
4385
4386 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4387     probe_cc depcc "$dep_cc"
4388     CCDEP=${_DEPCMD:-$DEPCMD}
4389     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4390     DEPCCFLAGS=$_flags
4391 fi
4392
4393 if $ar 2>&1 | grep -q Microsoft; then
4394     arflags="-nologo"
4395     ar_o='-out:$@'
4396 elif $ar 2>&1 | grep -q "\[D\] "; then
4397     arflags="rcD"
4398     ar_o='$@'
4399 else
4400     arflags="rc"
4401     ar_o='$@'
4402 fi
4403
4404 add_cflags $extra_cflags
4405 add_cxxflags $extra_cxxflags
4406 add_objcflags $extra_objcflags
4407 add_asflags $extra_cflags
4408
4409 if test -n "$sysroot"; then
4410     case "$cc_type" in
4411         gcc|llvm_gcc|clang)
4412             add_cppflags --sysroot="$sysroot"
4413             add_ldflags --sysroot="$sysroot"
4414         ;;
4415     esac
4416 fi
4417
4418 if test "$cpu" = host; then
4419     enabled cross_compile &&
4420         die "--cpu=host makes no sense when cross-compiling."
4421
4422     case "$cc_type" in
4423         gcc|llvm_gcc)
4424             check_native(){
4425                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4426                 sed -n "/cc1.*$1=/{
4427                             s/.*$1=\\([^ ]*\\).*/\\1/
4428                             p
4429                             q
4430                         }" $TMPE
4431             }
4432             cpu=$(check_native -march || check_native -mcpu)
4433         ;;
4434         clang)
4435             check_native(){
4436                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4437                 sed -n "/cc1.*-target-cpu /{
4438                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4439                             p
4440                             q
4441                         }" $TMPE
4442             }
4443             cpu=$(check_native -march)
4444         ;;
4445     esac
4446
4447     test "${cpu:-host}" = host &&
4448         die "--cpu=host not supported with compiler $cc"
4449 fi
4450
4451 # Deal with common $arch aliases
4452 case "$arch" in
4453     aarch64|arm64)
4454         arch="aarch64"
4455     ;;
4456     arm*|iPad*|iPhone*)
4457         arch="arm"
4458     ;;
4459     mips*|IP*)
4460         case "$arch" in
4461         *el)
4462             add_cppflags -EL
4463             add_ldflags -EL
4464         ;;
4465         *eb)
4466             add_cppflags -EB
4467             add_ldflags -EB
4468         ;;
4469         esac
4470         arch="mips"
4471     ;;
4472     parisc*|hppa*)
4473         arch="parisc"
4474     ;;
4475     "Power Macintosh"|ppc*|powerpc*)
4476         arch="ppc"
4477     ;;
4478     s390|s390x)
4479         arch="s390"
4480     ;;
4481     sh4|sh)
4482         arch="sh4"
4483     ;;
4484     sun4*|sparc*)
4485         arch="sparc"
4486     ;;
4487     tilegx|tile-gx)
4488         arch="tilegx"
4489     ;;
4490     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4491         arch="x86"
4492     ;;
4493 esac
4494
4495 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4496 enable $arch
4497
4498 # Add processor-specific flags
4499 if enabled aarch64; then
4500
4501     case $cpu in
4502         armv*)
4503             cpuflags="-march=$cpu"
4504         ;;
4505         *)
4506             cpuflags="-mcpu=$cpu"
4507         ;;
4508     esac
4509
4510 elif enabled alpha; then
4511
4512     cpuflags="-mcpu=$cpu"
4513
4514 elif enabled arm; then
4515
4516     check_arm_arch() {
4517         check_cpp_condition stddef.h \
4518             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4519             $cpuflags
4520     }
4521
4522     probe_arm_arch() {
4523         if   check_arm_arch 4;        then echo armv4
4524         elif check_arm_arch 4T;       then echo armv4t
4525         elif check_arm_arch 5;        then echo armv5
4526         elif check_arm_arch 5E;       then echo armv5e
4527         elif check_arm_arch 5T;       then echo armv5t
4528         elif check_arm_arch 5TE;      then echo armv5te
4529         elif check_arm_arch 5TEJ;     then echo armv5te
4530         elif check_arm_arch 6;        then echo armv6
4531         elif check_arm_arch 6J;       then echo armv6j
4532         elif check_arm_arch 6K;       then echo armv6k
4533         elif check_arm_arch 6Z;       then echo armv6z
4534         elif check_arm_arch 6KZ;      then echo armv6zk
4535         elif check_arm_arch 6ZK;      then echo armv6zk
4536         elif check_arm_arch 6T2;      then echo armv6t2
4537         elif check_arm_arch 7;        then echo armv7
4538         elif check_arm_arch 7A  7_A;  then echo armv7-a
4539         elif check_arm_arch 7S;       then echo armv7-a
4540         elif check_arm_arch 7R  7_R;  then echo armv7-r
4541         elif check_arm_arch 7M  7_M;  then echo armv7-m
4542         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4543         elif check_arm_arch 8A  8_A;  then echo armv8-a
4544         fi
4545     }
4546
4547     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4548
4549     case $cpu in
4550         armv*)
4551             cpuflags="-march=$cpu"
4552             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4553         ;;
4554         *)
4555             cpuflags="-mcpu=$cpu"
4556             case $cpu in
4557                 cortex-a*)                               subarch=armv7a  ;;
4558                 cortex-r*)                               subarch=armv7r  ;;
4559                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4560                 arm11*)                                  subarch=armv6   ;;
4561                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4562                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4563                 *)                             subarch=$(probe_arm_arch) ;;
4564             esac
4565         ;;
4566     esac
4567
4568     case "$subarch" in
4569         armv5t*)    enable fast_clz                ;;
4570         armv[6-8]*)
4571             enable fast_clz
4572             disabled fast_unaligned || enable fast_unaligned
4573             ;;
4574     esac
4575
4576 elif enabled avr32; then
4577
4578     case $cpu in
4579         ap7[02]0[0-2])
4580             subarch="avr32_ap"
4581             cpuflags="-mpart=$cpu"
4582         ;;
4583         ap)
4584             subarch="avr32_ap"
4585             cpuflags="-march=$cpu"
4586         ;;
4587         uc3[ab]*)
4588             subarch="avr32_uc"
4589             cpuflags="-mcpu=$cpu"
4590         ;;
4591         uc)
4592             subarch="avr32_uc"
4593             cpuflags="-march=$cpu"
4594         ;;
4595     esac
4596
4597 elif enabled bfin; then
4598
4599     cpuflags="-mcpu=$cpu"
4600
4601 elif enabled mips; then
4602
4603     cpuflags="-march=$cpu"
4604
4605     if [ "$cpu" != "generic" ]; then
4606         disable mips32r2
4607         disable mips32r5
4608         disable mips64r2
4609         disable mips32r6
4610         disable mips64r6
4611         disable loongson2
4612         disable loongson3
4613
4614         case $cpu in
4615             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4616                 enable mips32r2
4617                 disable msa
4618             ;;
4619             p5600|i6400|p6600)
4620                 disable mipsdsp
4621                 disable mipsdspr2
4622             ;;
4623             loongson*)
4624                 enable loongson2
4625                 enable loongson3
4626                 enable local_aligned
4627                 enable simd_align_16
4628                 enable fast_64bit
4629                 enable fast_clz
4630                 enable fast_cmov
4631                 enable fast_unaligned
4632                 disable aligned_stack
4633                 disable mipsfpu
4634                 disable mipsdsp
4635                 disable mipsdspr2
4636                 case $cpu in
4637                     loongson3*)
4638                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4639                     ;;
4640                     loongson2e)
4641                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4642                     ;;
4643                     loongson2f)
4644                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4645                     ;;
4646                 esac
4647             ;;
4648             *)
4649                 # Unknown CPU. Disable everything.
4650                 warn "unknown CPU. Disabling all MIPS optimizations."
4651                 disable mipsfpu
4652                 disable mipsdsp
4653                 disable mipsdspr2
4654                 disable msa
4655                 disable mmi
4656             ;;
4657         esac
4658
4659         case $cpu in
4660             24kc)
4661                 disable mipsfpu
4662                 disable mipsdsp
4663                 disable mipsdspr2
4664             ;;
4665             24kf*)
4666                 disable mipsdsp
4667                 disable mipsdspr2
4668             ;;
4669             24kec|34kc|1004kc)
4670                 disable mipsfpu
4671                 disable mipsdspr2
4672             ;;
4673             24kef*|34kf*|1004kf*)
4674                 disable mipsdspr2
4675             ;;
4676             74kc)
4677                 disable mipsfpu
4678             ;;
4679             p5600)
4680                 enable mips32r5
4681                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4682             ;;
4683             i6400)
4684                 enable mips64r6
4685                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4686             ;;
4687             p6600)
4688                 enable mips64r6
4689                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4690             ;;
4691         esac
4692     else
4693         # We do not disable anything. Is up to the user to disable the unwanted features.
4694         warn 'generic cpu selected'
4695     fi
4696
4697 elif enabled ppc; then
4698
4699     disable ldbrx
4700
4701     case $(tolower $cpu) in
4702         601|ppc601|powerpc601)
4703             cpuflags="-mcpu=601"
4704             disable altivec
4705         ;;
4706         603*|ppc603*|powerpc603*)
4707             cpuflags="-mcpu=603"
4708             disable altivec
4709         ;;
4710         604*|ppc604*|powerpc604*)
4711             cpuflags="-mcpu=604"
4712             disable altivec
4713         ;;
4714         g3|75*|ppc75*|powerpc75*)
4715             cpuflags="-mcpu=750"
4716             disable altivec
4717         ;;
4718         g4|745*|ppc745*|powerpc745*)
4719             cpuflags="-mcpu=7450"
4720             disable vsx
4721         ;;
4722         74*|ppc74*|powerpc74*)
4723             cpuflags="-mcpu=7400"
4724             disable vsx
4725         ;;
4726         g5|970|ppc970|powerpc970)
4727             cpuflags="-mcpu=970"
4728             disable vsx
4729         ;;
4730         power[3-6]*)
4731             cpuflags="-mcpu=$cpu"
4732             disable vsx
4733         ;;
4734         power[7-8]*)
4735             cpuflags="-mcpu=$cpu"
4736         ;;
4737         cell)
4738             cpuflags="-mcpu=cell"
4739             enable ldbrx
4740             disable vsx
4741         ;;
4742         e500mc)
4743             cpuflags="-mcpu=e500mc"
4744             disable altivec
4745         ;;
4746         e500v2)
4747             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4748             disable altivec
4749             disable dcbzl
4750         ;;
4751         e500)
4752             cpuflags="-mcpu=8540 -mhard-float"
4753             disable altivec
4754             disable dcbzl
4755         ;;
4756     esac
4757
4758 elif enabled sparc; then
4759
4760     case $cpu in
4761         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4762             cpuflags="-mcpu=$cpu"
4763         ;;
4764         ultrasparc*|niagara[234])
4765             cpuflags="-mcpu=$cpu"
4766         ;;
4767     esac
4768
4769 elif enabled x86; then
4770
4771     case $cpu in
4772         i[345]86|pentium)
4773             cpuflags="-march=$cpu"
4774             disable i686
4775             disable mmx
4776         ;;
4777         # targets that do NOT support nopl and conditional mov (cmov)
4778         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4779             cpuflags="-march=$cpu"
4780             disable i686
4781         ;;
4782         # targets that do support nopl and conditional mov (cmov)
4783         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4784         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4785         |amdfam10|barcelona|b[dt]ver*|znver*)
4786             cpuflags="-march=$cpu"
4787             enable i686
4788             enable fast_cmov
4789         ;;
4790         # targets that do support conditional mov but on which it's slow
4791         pentium4|pentium4m|prescott|nocona)
4792             cpuflags="-march=$cpu"
4793             enable i686
4794             disable fast_cmov
4795         ;;
4796     esac
4797
4798 fi
4799
4800 if [ "$cpu" != generic ]; then
4801     add_cflags  $cpuflags
4802     add_asflags $cpuflags
4803     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4804 fi
4805
4806 # compiler sanity check
4807 check_exec <<EOF
4808 int main(void){ return 0; }
4809 EOF
4810 if test "$?" != 0; then
4811     echo "$cc is unable to create an executable file."
4812     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4813         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4814         echo "Only do this if you know what cross compiling means."
4815     fi
4816     die "C compiler test failed."
4817 fi
4818
4819 add_cppflags -D_ISOC99_SOURCE
4820 add_cxxflags -D__STDC_CONSTANT_MACROS
4821 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4822
4823 # some compilers silently accept -std=c11, so we also need to check that the
4824 # version macro is defined properly
4825 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4826     add_cflags -std=c11 ||
4827     check_cflags -std=c99
4828
4829 check_cppflags -D_FILE_OFFSET_BITS=64
4830 check_cppflags -D_LARGEFILE_SOURCE
4831
4832 add_host_cppflags -D_ISOC99_SOURCE
4833 check_host_cflags -std=c99
4834 check_host_cflags -Wall
4835 check_host_cflags $host_cflags_speed
4836
4837 check_64bit(){
4838     arch32=$1
4839     arch64=$2
4840     expr=$3
4841     check_code cc "" "int test[2*($expr) - 1]" &&
4842         subarch=$arch64 || subarch=$arch32
4843     enable $subarch
4844 }
4845
4846 case "$arch" in
4847     aarch64|alpha|ia64)
4848         enabled shared && enable_weak pic
4849     ;;
4850     mips)
4851         check_64bit mips mips64 '_MIPS_SIM > 1'
4852         enabled shared && enable_weak pic
4853     ;;
4854     parisc)
4855         check_64bit parisc parisc64 'sizeof(void *) > 4'
4856         enabled shared && enable_weak pic
4857     ;;
4858     ppc)
4859         check_64bit ppc ppc64 'sizeof(void *) > 4'
4860         enabled shared && enable_weak pic
4861     ;;
4862     s390)
4863         check_64bit s390 s390x 'sizeof(void *) > 4'
4864         enabled shared && enable_weak pic
4865     ;;
4866     sparc)
4867         check_64bit sparc sparc64 'sizeof(void *) > 4'
4868         enabled shared && enable_weak pic
4869     ;;
4870     x86)
4871         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4872         # Treat x32 as x64 for now. Note it also needs pic if shared
4873         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4874             subarch=x86_64 && enable x86_64 && disable x86_32
4875         if enabled x86_64; then
4876             enabled shared && enable_weak pic
4877             objformat=elf64
4878         fi
4879     ;;
4880 esac
4881
4882 # OS specific
4883 case $target_os in
4884     aix)
4885         SHFLAGS=-shared
4886         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4887         enabled shared && add_ldflags -Wl,-brtl
4888         arflags='-Xany -r -c'
4889         ;;
4890     android)
4891         disable symver
4892         enable section_data_rel_ro
4893         SLIB_INSTALL_NAME='$(SLIBNAME)'
4894         SLIB_INSTALL_LINKS=
4895         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4896         ;;
4897     haiku)
4898         prefix_default="/boot/common"
4899         network_extralibs="-lnetwork"
4900         host_extralibs=
4901         ;;
4902     sunos)
4903         SHFLAGS='-shared -Wl,-h,$$(@F)'
4904         enabled x86 && append SHFLAGS -mimpure-text
4905         network_extralibs="-lsocket -lnsl"
4906         add_cppflags -D__EXTENSIONS__
4907         # When using suncc to build, the Solaris linker will mark
4908         # an executable with each instruction set encountered by
4909         # the Solaris assembler.  As our libraries contain their own
4910         # guards for processor-specific code, instead suppress
4911         # generation of the HWCAPS ELF section on Solaris x86 only.
4912         enabled_all suncc x86 &&
4913             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4914             add_ldflags -Wl,-M,mapfile
4915         nm_default='nm -P -g'
4916         version_script='-M'
4917         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4918         ;;
4919     netbsd)
4920         disable symver
4921         oss_indev_extralibs="-lossaudio"
4922         oss_outdev_extralibs="-lossaudio"
4923         enabled gcc || check_ldflags -Wl,-zmuldefs
4924         ;;
4925     openbsd|bitrig)
4926         disable symver
4927         SHFLAGS='-shared'
4928         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4929         SLIB_INSTALL_LINKS=
4930         oss_indev_extralibs="-lossaudio"
4931         oss_outdev_extralibs="-lossaudio"
4932         ;;
4933     dragonfly)
4934         disable symver
4935         ;;
4936     freebsd)
4937         ;;
4938     bsd/os)
4939         add_extralibs -lpoll -lgnugetopt
4940         strip="strip -d"
4941         ;;
4942     darwin)
4943         enabled ppc && add_asflags -force_cpusubtype_ALL
4944         install_name_dir_default='$(SHLIBDIR)'
4945         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4946         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4947         strip="${strip} -x"
4948         add_ldflags -Wl,-dynamic,-search_paths_first
4949         check_cflags -Werror=partial-availability
4950         SLIBSUF=".dylib"
4951         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4952         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4953         enabled x86_64 && objformat="macho64" || objformat="macho32"
4954         enabled_any pic shared x86_64 ||
4955             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4956         check_header dispatch/dispatch.h &&
4957             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4958         if test -n "$sysroot"; then
4959             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4960             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4961         fi
4962         version_script='-exported_symbols_list'
4963         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4964         ;;
4965     msys*)
4966         die "Native MSYS builds are discouraged, please use the MINGW environment."
4967         ;;
4968     mingw32*|mingw64*)
4969         target_os=mingw32
4970         if enabled shared; then
4971             # Cannot build both shared and static libs when using dllimport.
4972             disable static
4973         fi
4974         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4975         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4976         shlibdir_default="$bindir_default"
4977         SLIBPREF=""
4978         SLIBSUF=".dll"
4979         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4980         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4981         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4982         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4983         SLIB_INSTALL_LINKS=
4984         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4985         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4986         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4987         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4988         enabled x86_64 && objformat="win64" || objformat="win32"
4989         ranlib=:
4990         enable dos_paths
4991         check_ldflags -Wl,--nxcompat,--dynamicbase
4992         # Lets work around some stupidity in binutils.
4993         # ld will strip relocations from executables even though we need them
4994         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4995         # however ld then forgets what the entry point should be (oops) so we
4996         # have to manually (re)set it.
4997         if enabled x86_32; then
4998             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4999         elif enabled x86_64; then
5000             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5001             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5002             # Set image base >4GB for extra entropy with HEASLR
5003             add_ldexeflags -Wl,--image-base,0x140000000
5004             append SHFLAGS -Wl,--image-base,0x180000000
5005         fi
5006         ;;
5007     win32|win64)
5008         disable symver
5009         if enabled shared; then
5010             # Link to the import library instead of the normal static library
5011             # for shared libs.
5012             LD_LIB='%.lib'
5013             # Cannot build both shared and static libs with MSVC or icl.
5014             disable static
5015         fi
5016         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5017         shlibdir_default="$bindir_default"
5018         SLIBPREF=""
5019         SLIBSUF=".dll"
5020         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5021         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5022         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5023         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5024         SLIB_INSTALL_LINKS=
5025         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5026         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5027         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5028         enabled x86_64 && objformat="win64" || objformat="win32"
5029         ranlib=:
5030         enable dos_paths
5031         ;;
5032     cygwin*)
5033         target_os=cygwin
5034         shlibdir_default="$bindir_default"
5035         SLIBPREF="cyg"
5036         SLIBSUF=".dll"
5037         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5038         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5039         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5040         SLIB_INSTALL_LINKS=
5041         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5042         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5043         enabled x86_64 && objformat="win64" || objformat="win32"
5044         enable dos_paths
5045         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5046         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5047         ;;
5048     *-dos|freedos|opendos)
5049         network_extralibs="-lsocket"
5050         objformat="coff"
5051         enable dos_paths
5052         add_cppflags -U__STRICT_ANSI__
5053         ;;
5054     linux)
5055         enable section_data_rel_ro
5056         enabled_any arm aarch64 && enable_weak linux_perf
5057         ;;
5058     irix*)
5059         target_os=irix
5060         ranlib="echo ignoring ranlib"
5061         ;;
5062     os/2*)
5063         strip="lxlite -CS"
5064         striptype=""
5065         objformat="aout"
5066         add_cppflags -D_GNU_SOURCE
5067         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5068         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5069         LIBSUF="_s.a"
5070         SLIBPREF=""
5071         SLIBSUF=".dll"
5072         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5073         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5074         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5075             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5076             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5077             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5078             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5079         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5080             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5081         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5082         SLIB_INSTALL_LINKS=
5083         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5084         enable dos_paths
5085         enable_weak os2threads
5086         ;;
5087     gnu/kfreebsd)
5088         add_cppflags -D_BSD_SOURCE
5089         ;;
5090     gnu)
5091         ;;
5092     qnx)
5093         add_cppflags -D_QNX_SOURCE
5094         network_extralibs="-lsocket"
5095         ;;
5096     symbian)
5097         SLIBSUF=".dll"
5098         enable dos_paths
5099         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5100         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5101         add_ldflags -Wl,--target1-abs,--no-undefined \
5102                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5103                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5104         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5105                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5106                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5107         ;;
5108     minix)
5109         ;;
5110     none)
5111         ;;
5112     *)
5113         die "Unknown OS '$target_os'."
5114         ;;
5115 esac
5116
5117 # test if creating links works
5118 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5119 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5120 mkdir "$link_dest"
5121 $ln_s "$link_dest" "$link_name"
5122 touch "$link_dest/test_file"
5123 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5124     # create link to source path
5125     [ -e src ] && rm src
5126     $ln_s "$source_path" src
5127     source_link=src
5128 else
5129     # creating directory links doesn't work
5130     # fall back to using the full source path
5131     source_link="$source_path"
5132 fi
5133 # cleanup
5134 rm -r "$link_dest"
5135 rm -r "$link_name"
5136
5137 # determine libc flavour
5138
5139 probe_libc(){
5140     pfx=$1
5141     pfx_no_=${pfx%_}
5142     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5143     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5144         eval ${pfx}libc_type=uclibc
5145         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5146     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5147         eval ${pfx}libc_type=glibc
5148         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5149     # MinGW headers can be installed on Cygwin, so check for newlib first.
5150     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5151         eval ${pfx}libc_type=newlib
5152         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5153     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5154     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5155         eval ${pfx}libc_type=mingw64
5156         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5157             add_compat msvcrt/snprintf.o
5158             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5159         fi
5160         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5161         eval test \$${pfx_no_}cc_type = "gcc" &&
5162             add_${pfx}cppflags -D__printf__=__gnu_printf__
5163         check_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5164             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5165     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5166          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5167         eval ${pfx}libc_type=mingw32
5168         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5169             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5170             die "ERROR: MinGW32 runtime version must be >= 3.15."
5171         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5172         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5173             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5174         check_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5175             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5176         eval test \$${pfx_no_}cc_type = "gcc" &&
5177             add_${pfx}cppflags -D__printf__=__gnu_printf__
5178     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5179         eval ${pfx}libc_type=msvcrt
5180         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5181             if [ "$pfx" = host_ ]; then
5182                 add_host_cppflags -Dsnprintf=_snprintf
5183             else
5184                 add_compat strtod.o strtod=avpriv_strtod
5185                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5186                                              _snprintf=avpriv_snprintf  \
5187                                              vsnprintf=avpriv_vsnprintf
5188             fi
5189         fi
5190         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5191         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5192         # 0x601 by default unless something else is set by the user.
5193         # This can easily lead to us detecting functions only present
5194         # in such new versions and producing binaries requiring windows 7.0.
5195         # Therefore explicitly set the default to Vista unless the user has
5196         # set something else on the command line.
5197         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5198         # family. For these cases, configure is free to use any functions
5199         # found in the SDK headers by default. (Alternatively, we could force
5200         # _WIN32_WINNT to 0x0602 in that case.)
5201         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5202             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5203 #ifdef WINAPI_FAMILY
5204 #include <winapifamily.h>
5205 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5206 #error not desktop
5207 #endif
5208 #endif
5209 EOF
5210         if [ "$pfx" = "" ]; then
5211             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5212             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5213         fi
5214     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5215         eval ${pfx}libc_type=klibc
5216     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5217         eval ${pfx}libc_type=bionic
5218     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5219         eval ${pfx}libc_type=solaris
5220         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5221     fi
5222     check_${pfx}cc <<EOF
5223 #include <time.h>
5224 void *v = localtime_r;
5225 EOF
5226 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5227 #include <time.h>
5228 void *v = localtime_r;
5229 EOF
5230
5231     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5232 }
5233
5234 probe_libc
5235 probe_libc host_
5236
5237 # hacks for compiler/libc/os combinations
5238
5239 case $libc_type in
5240     bionic)
5241         add_compat strtod.o strtod=avpriv_strtod
5242         ;;
5243 esac
5244
5245 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5246     add_cppflags '-I\$(SRC_PATH)/compat/float'
5247
5248 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5249
5250 set_default libdir
5251 : ${shlibdir_default:="$libdir"}
5252 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5253
5254 set_default $PATHS_LIST
5255 set_default nm
5256
5257 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5258
5259 enable_weak_pic() {
5260     disabled pic && return
5261     enable pic
5262     add_cppflags -DPIC
5263     case "$target_os" in
5264     mingw*|cygwin*|win*)
5265         ;;
5266     *)
5267         add_cflags -fPIC
5268         add_asflags -fPIC
5269         ;;
5270     esac
5271 }
5272
5273 enabled pic && enable_weak_pic
5274
5275 check_cc <<EOF || die "Symbol mangling check failed."
5276 int ff_extern;
5277 EOF
5278 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5279 extern_prefix=${sym%%ff_extern*}
5280
5281 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5282
5283 _restrict=
5284 for restrict_keyword in restrict __restrict__ __restrict; do
5285     check_cc <<EOF && _restrict=$restrict_keyword && break
5286 void foo(char * $restrict_keyword p);
5287 EOF
5288 done
5289
5290 check_cc <<EOF && enable pragma_deprecated
5291 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5292 EOF
5293
5294 check_cc <<EOF || die "endian test failed"
5295 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5296 EOF
5297 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5298
5299 check_cc <<EOF && enable const_nan
5300 #include <math.h>
5301 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5302 EOF
5303
5304 if ! enabled ppc64 || enabled bigendian; then
5305     disable vsx
5306 fi
5307
5308 check_gas() {
5309     log "check_gas using '$as' as AS"
5310     # :vararg is used on aarch64, arm and ppc altivec
5311     check_as <<EOF || return 1
5312 .macro m n, y:vararg=0
5313 \n: .int \y
5314 .endm
5315 m x
5316 EOF
5317     # .altmacro is only used in arm asm
5318     ! enabled arm || check_as <<EOF || return 1
5319 .altmacro
5320 EOF
5321     enable gnu_as
5322     return 0
5323 }
5324
5325 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5326     nogas=:
5327     enabled_any arm aarch64 && nogas=die
5328     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5329     as_noop=-v
5330
5331     case $as_type in
5332         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5333         gcc)  gaspp_as_type=gas ;;
5334         *)    gaspp_as_type=$as_type ;;
5335     esac
5336
5337     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5338
5339     test "${as#*gas-preprocessor.pl}" != "$as" ||
5340     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5341         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5342
5343     if ! check_gas ; then
5344         as=${gas:=$as}
5345         check_gas || \
5346             $nogas "GNU assembler not found, install/update gas-preprocessor"
5347     fi
5348
5349     check_as <<EOF && enable as_func
5350 .func test
5351 .endfunc
5352 EOF
5353 fi
5354
5355 check_inline_asm inline_asm_labels '"1:\n"'
5356
5357 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5358
5359 if enabled aarch64; then
5360     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5361     # internal assembler in clang 3.3 does not support this instruction
5362     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5363     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5364
5365     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5366
5367 elif enabled alpha; then
5368
5369     check_cflags -mieee
5370
5371 elif enabled arm; then
5372
5373     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5374
5375     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5376 float func(float a, float b){ return a+b; }
5377 EOF
5378
5379     enabled thumb && check_cflags -mthumb || check_cflags -marm
5380
5381     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5382         enable vfp_args
5383     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5384         enable vfp_args
5385     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5386         case "${cross_prefix:-$cc}" in
5387             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5388             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5389 __asm__ (".eabi_attribute 28, 1");
5390 int main(void) { return 0; }
5391 EOF
5392         esac
5393         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5394     fi
5395
5396     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5397     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5398     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5399     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5400     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5401     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5402     enabled setend  && check_insn setend  'setend be'
5403
5404     [ $target_os = linux ] || [ $target_os = android ] ||
5405         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5406             $ARCH_EXT_LIST_ARM
5407
5408     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5409
5410     check_as <<EOF && enable as_arch_directive
5411 .arch armv7-a
5412 EOF
5413     check_as <<EOF && enable as_fpu_directive
5414 .fpu neon
5415 EOF
5416
5417     # llvm's integrated assembler supports .object_arch from llvm 3.5
5418     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5419         check_as <<EOF && enable as_object_arch
5420 .object_arch armv4
5421 EOF
5422
5423     # MS armasm fails to assemble our PIC constructs
5424     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5425
5426 elif enabled mips; then
5427
5428     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5429     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5430     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5431
5432     # Enable minimum ISA based on selected options
5433     if enabled mips64; then
5434         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5435         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5436         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5437     else
5438         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5439         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5440         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5441         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5442     fi
5443
5444     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5445     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5446     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5447     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5448     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5449
5450     if enabled bigendian && enabled msa; then
5451         disable msa
5452     fi
5453
5454 elif enabled parisc; then
5455
5456     if enabled gcc; then
5457         case $($cc -dumpversion) in
5458             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5459         esac
5460     fi
5461
5462 elif enabled ppc; then
5463
5464     enable local_aligned
5465
5466     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5467     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5468     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5469     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5470
5471     if enabled altivec; then
5472         check_cflags -maltivec -mabi=altivec
5473
5474         # check if our compiler supports Motorola AltiVec C API
5475         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5476                                  vector signed int v2 = (vector signed int) { 1 };
5477                                  v1 = vec_add(v1, v2);" ||
5478             disable altivec
5479
5480         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5481     fi
5482
5483     if enabled vsx; then
5484         check_cflags -mvsx &&
5485         check_code cc altivec.h "int v[4] = { 0 };
5486                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5487             disable vsx
5488     fi
5489
5490     if enabled power8; then
5491         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5492     fi
5493
5494 elif enabled x86; then
5495
5496     check_builtin rdtsc    intrin.h   "__rdtsc()"
5497     check_builtin mm_empty mmintrin.h "_mm_empty()"
5498
5499     enable local_aligned
5500
5501     # check whether EBP is available on x86
5502     # As 'i' is stored on the stack, this program will crash
5503     # if the base pointer is used to access it because the
5504     # base pointer is cleared in the inline assembly code.
5505     check_exec_crash <<EOF && enable ebp_available
5506 volatile int i=0;
5507 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5508 return i;
5509 EOF
5510
5511     # check whether EBX is available on x86
5512     check_inline_asm ebx_available '""::"b"(0)' &&
5513         check_inline_asm ebx_available '"":::"%ebx"'
5514
5515     # check whether xmm clobbers are supported
5516     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5517
5518     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5519         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5520
5521     # check whether binutils is new enough to compile SSSE3/MMXEXT
5522     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5523     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5524
5525     probe_x86asm(){
5526         x86asmexe_probe=$1
5527         if check_cmd $x86asmexe_probe -v; then
5528             x86asmexe=$x86asmexe_probe
5529             x86asm_type=nasm
5530             x86asm_debug="-g -F dwarf"
5531             X86ASMDEP=
5532             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5533         elif check_cmd $x86asmexe_probe --version; then
5534             x86asmexe=$x86asmexe_probe
5535             x86asm_type=yasm
5536             x86asm_debug="-g dwarf2"
5537             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5538             X86ASM_DEPFLAGS=
5539         fi
5540         check_x86asm "movbe ecx, [5]" && enable x86asm
5541     }
5542
5543     if ! disabled_any asm mmx x86asm; then
5544         disable x86asm
5545         for program in $x86asmexe nasm yasm; do
5546             probe_x86asm $program && break
5547         done
5548         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5549         X86ASMFLAGS="-f $objformat"
5550         enabled pic               && append X86ASMFLAGS "-DPIC"
5551         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5552         case "$objformat" in
5553             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5554         esac
5555
5556         check_x86asm "vmovdqa32 [eax]{k1}{z}, zmm0"    || disable avx512_external
5557         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5558         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5559         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5560         check_x86asm "CPU amdnop" || disable cpunop
5561     fi
5562
5563     case "$cpu" in
5564         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5565             disable fast_clz
5566         ;;
5567     esac
5568
5569 fi
5570
5571 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5572
5573 check_ldflags -Wl,--as-needed
5574 check_ldflags -Wl,-z,noexecstack
5575
5576 if ! disabled network; then
5577     check_func getaddrinfo $network_extralibs
5578     check_func inet_aton $network_extralibs
5579
5580     check_type netdb.h "struct addrinfo"
5581     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5582     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5583     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5584     check_type poll.h "struct pollfd"
5585     check_type netinet/sctp.h "struct sctp_event_subscribe"
5586     check_struct "sys/socket.h" "struct msghdr" msg_flags
5587     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5588     check_type netinet/in.h "struct sockaddr_in6"
5589     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5590     check_type "sys/types.h sys/socket.h" socklen_t
5591
5592     # Prefer arpa/inet.h over winsock2
5593     if check_header arpa/inet.h ; then
5594         check_func closesocket
5595     elif check_header winsock2.h ; then
5596         check_func_headers winsock2.h closesocket -lws2 &&
5597             network_extralibs="-lws2" ||
5598         { check_func_headers winsock2.h closesocket -lws2_32 &&
5599             network_extralibs="-lws2_32"; } || disable winsock2_h network
5600         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5601
5602         check_type ws2tcpip.h socklen_t
5603         check_type ws2tcpip.h "struct addrinfo"
5604         check_type ws2tcpip.h "struct group_source_req"
5605         check_type ws2tcpip.h "struct ip_mreq_source"
5606         check_type ws2tcpip.h "struct ipv6_mreq"
5607         check_type winsock2.h "struct pollfd"
5608         check_struct winsock2.h "struct sockaddr" sa_len
5609         check_type ws2tcpip.h "struct sockaddr_in6"
5610         check_type ws2tcpip.h "struct sockaddr_storage"
5611     else
5612         disable network
5613     fi
5614 fi
5615
5616 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5617 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5618 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5619 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5620 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5621 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5622 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5623
5624 case "$custom_allocator" in
5625     jemalloc)
5626         # jemalloc by default does not use a prefix
5627         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5628     ;;
5629     tcmalloc)
5630         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5631         malloc_prefix=tc_
5632     ;;
5633 esac
5634
5635 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5636 check_func  ${malloc_prefix}memalign            && enable memalign
5637 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5638
5639 check_func  access
5640 check_func_headers stdlib.h arc4random
5641 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5642 check_func  fcntl
5643 check_func  fork
5644 check_func  gethrtime
5645 check_func  getopt
5646 check_func  getrusage
5647 check_func  gettimeofday
5648 check_func  isatty
5649 check_func  mkstemp
5650 check_func  mmap
5651 check_func  mprotect
5652 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5653 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5654 check_func  sched_getaffinity
5655 check_func  setrlimit
5656 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5657 check_func  strerror_r
5658 check_func  sysconf
5659 check_func  sysctl
5660 check_func  usleep
5661
5662 check_func_headers conio.h kbhit
5663 check_func_headers io.h setmode
5664 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5665 check_func_headers mach/mach_time.h mach_absolute_time
5666 check_func_headers stdlib.h getenv
5667 check_func_headers sys/stat.h lstat
5668
5669 check_func_headers windows.h GetProcessAffinityMask
5670 check_func_headers windows.h GetProcessTimes
5671 check_func_headers windows.h GetSystemTimeAsFileTime
5672 check_func_headers windows.h LoadLibrary
5673 check_func_headers windows.h MapViewOfFile
5674 check_func_headers windows.h PeekNamedPipe
5675 check_func_headers windows.h SetConsoleTextAttribute
5676 check_func_headers windows.h SetConsoleCtrlHandler
5677 check_func_headers windows.h Sleep
5678 check_func_headers windows.h VirtualAlloc
5679 check_func_headers glob.h glob
5680 enabled xlib &&
5681     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5682
5683 check_header direct.h
5684 check_header dirent.h
5685 check_header dxgidebug.h
5686 check_header dxva.h
5687 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5688 check_header io.h
5689 check_header libcrystalhd/libcrystalhd_if.h
5690 check_header malloc.h
5691 check_header net/udplite.h
5692 check_header poll.h
5693 check_header sys/param.h
5694 check_header sys/resource.h
5695 check_header sys/select.h
5696 check_header sys/time.h
5697 check_header sys/un.h
5698 check_header termios.h
5699 check_header unistd.h
5700 check_header valgrind/valgrind.h
5701 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5702 check_header windows.h
5703 check_header X11/extensions/XvMClib.h
5704 check_header asm/types.h
5705
5706 # it seems there are versions of clang in some distros that try to use the
5707 # gcc headers, which explodes for stdatomic
5708 # so we also check that atomics actually work here
5709 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5710
5711 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5712 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5713 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5714 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5715 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5716
5717 enabled appkit       && check_apple_framework AppKit
5718 enabled audiotoolbox && check_apple_framework AudioToolbox
5719 enabled avfoundation && check_apple_framework AVFoundation
5720 enabled coreimage    && check_apple_framework CoreImage
5721 enabled videotoolbox && check_apple_framework VideoToolbox
5722
5723 check_apple_framework CoreFoundation
5724 check_apple_framework CoreMedia
5725 check_apple_framework CoreVideo
5726
5727 enabled avfoundation && {
5728     disable coregraphics applicationservices
5729     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5730     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5731
5732 enabled videotoolbox && {
5733     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5734     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5735 }
5736
5737 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5738
5739 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5740 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5741 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5742 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5743 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5744
5745 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5746 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5747 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5748 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5749 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5750 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5751 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5752 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5753 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5754 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5755
5756 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5757
5758 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5759
5760 if ! disabled w32threads && ! enabled pthreads; then
5761     check_func_headers "windows.h process.h" _beginthreadex &&
5762         check_type "windows.h" CONDITION_VARIABLE &&
5763         enable w32threads || disable w32threads
5764     if ! enabled w32threads && enabled winrt; then
5765         check_func_headers "windows.h" CreateThread &&
5766             enable w32threads || disable w32threads
5767     fi
5768 fi
5769
5770 # check for some common methods of building with pthread support
5771 # do this before the optional library checks as some of them require pthreads
5772 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5773     if check_lib pthreads pthread.h pthread_join   -pthread &&
5774        check_lib pthreads pthread.h pthread_create -pthread; then
5775         add_cflags -pthread
5776     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5777          check_lib pthreads pthread.h pthread_create -pthreads; then
5778         add_cflags -pthreads
5779     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5780          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5781         add_cflags -ldl -pthread
5782     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5783          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5784         :
5785     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5786          check_lib pthreads pthread.h pthread_create -lpthread; then
5787         :
5788     elif check_func pthread_join && check_func pthread_create; then
5789         enable pthreads
5790     fi
5791     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5792
5793     if enabled pthreads; then
5794         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5795         check_func pthread_cancel $pthreads_extralibs
5796     fi
5797 fi
5798
5799 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5800 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5801 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5802
5803 # On some systems dynamic loading requires no extra linker flags
5804 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5805
5806 check_lib libm math.h sin -lm
5807
5808 atan2f_args=2
5809 copysign_args=2
5810 hypot_args=2
5811 ldexpf_args=2
5812 powf_args=2
5813
5814 for func in $MATH_FUNCS; do
5815     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5816 done
5817
5818 for func in $COMPLEX_FUNCS; do
5819     eval check_complexfunc $func \${${func}_args:-1}
5820 done
5821
5822 # these are off by default, so fail if requested and not available
5823 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5824 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5825 enabled decklink          && { require_header DeckLinkAPI.h &&
5826                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5827 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5828 enabled frei0r            && require_header frei0r.h
5829 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5830 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5831 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5832 enabled ladspa            && require_header ladspa.h
5833 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5834 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5835 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5836 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5837 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5838 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5839                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5840                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5841 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5842 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5843 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5844 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5845                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5846                                  warn "using libfdk without pkg-config"; } }
5847 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"
5848 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5849 enabled fontconfig        && enable libfontconfig
5850 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5851 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5852 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5853 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5854                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5855 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5856                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5857                                done || die "ERROR: libgsm not found"; }
5858 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5859 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5860 # While it may appear that require is being used as a pkg-config
5861 # fallback for libmfx, it is actually being used to detect a different
5862 # installation route altogether.  If libmfx is installed via the Intel
5863 # Media SDK or Intel Media Server Studio, these don't come with
5864 # pkg-config support.  Instead, users should make sure that the build
5865 # can find the libraries and headers through other means.
5866 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5867                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5868 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5869 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
5870 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5871 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5872                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5873                                die "ERROR: libnpp not found"; }
5874 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5875 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5876 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5877                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5878                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5879                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5880 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5881 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5882                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5883 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5884 enabled libopus           && {
5885     enabled libopus_decoder && {
5886         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5887     }
5888     enabled libopus_encoder && {
5889         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5890     }
5891 }
5892 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5893 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5894 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5895 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5896 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5897 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5898                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5899 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5900 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5901 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5902 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5903 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5904 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5905 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
5906 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5907                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5908                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5909 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5910 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5911 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
5912 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5913 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5914                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5915
5916 enabled libvpx            && {
5917     enabled libvpx_vp8_decoder && {
5918         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5919             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5920                 die "ERROR: libvpx decoder version must be >=1.4.0";
5921     }
5922     enabled libvpx_vp8_encoder && {
5923         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5924             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5925                 die "ERROR: libvpx encoder version must be >=1.4.0";
5926     }
5927     enabled libvpx_vp9_decoder && {
5928         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5929             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
5930     }
5931     enabled libvpx_vp9_encoder && {
5932         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5933             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
5934     }
5935     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5936         die "libvpx enabled but no supported decoders found"
5937     fi
5938 }
5939
5940 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5941 enabled libwebp           && {
5942     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5943     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5944 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5945                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
5946                                  warn "using libx264 without pkg-config"; } } &&
5947                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5948                              { check_cpp_condition x264.h "X264_MPEG2" &&
5949                                enable libx262; }
5950 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5951                              require_cpp_condition x265.h "X265_BUILD >= 68"
5952 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5953 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5954 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
5955 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5956 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5957                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5958                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5959 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5960 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5961 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5962                                { ! enabled cross_compile &&
5963                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5964                                  add_ldflags -L/opt/vc/lib/ &&
5965                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5966                                die "ERROR: mmal not found" &&
5967                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5968 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5969                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5970                                die "ERROR: openal not found"; } &&
5971                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5972                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5973 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5974                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5975                                die "ERROR: opencl not found"; } &&
5976                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5977                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5978                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5979 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5980                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5981                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5982                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5983                                die "ERROR: opengl not found."
5984                              }
5985 enabled omx               && require_header OMX_Core.h
5986 enabled omx_rpi           && { check_header OMX_Core.h ||
5987                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5988                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5989 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5990                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5991                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5992                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5993                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5994                                die "ERROR: openssl not found"; }
5995 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
5996                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
5997                                { enabled libdrm ||
5998                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5999                              }
6000
6001 if enabled gcrypt; then
6002     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6003     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6004         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6005         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6006         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6007             die "ERROR: gcrypt not found"
6008         add_cflags $gcrypt_cflags
6009     else
6010         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6011     fi
6012 fi
6013
6014 if enabled sdl2; then
6015     SDL2_CONFIG="${cross_prefix}sdl2-config"
6016     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6017     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6018         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6019         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6020         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6021         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6022         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6023             enable sdl2
6024     fi
6025     if test $target_os = "mingw32"; then
6026         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6027     fi
6028 fi
6029
6030 if enabled decklink; then
6031     case $target_os in
6032         mingw32*|mingw64*|win32|win64)
6033             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6034             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6035             ;;
6036     esac
6037 fi
6038
6039 enabled securetransport &&
6040     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6041     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6042         disable securetransport
6043
6044 enabled securetransport &&
6045     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6046
6047 enabled schannel &&
6048     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6049     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6050     schannel_extralibs="-lsecur32" ||
6051         disable schannel
6052
6053 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6054 enabled makeinfo \
6055     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6056     && enable makeinfo_html || disable makeinfo_html
6057 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6058 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6059 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6060 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6061
6062 # check V4L2 codecs available in the API
6063 check_header linux/fb.h
6064 check_header linux/videodev2.h
6065 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6066 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6067 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6068 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6069 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6070 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6071 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6072 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6073 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6074 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6075 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6076
6077 check_header sys/videoio.h
6078 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6079
6080 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6081 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6082 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6083 # w32api 3.12 had it defined wrong
6084 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6085
6086 check_type "dshow.h" IBaseFilter
6087
6088 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6089 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6090     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6091     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6092     check_header "dev/ic/bt8xx.h"
6093
6094 if check_struct sys/soundcard.h audio_buf_info bytes; then
6095     enable_sanitized sys/soundcard.h
6096 else
6097     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6098     #include <sys/soundcard.h>
6099     audio_buf_info abc;
6100 EOF
6101 fi
6102
6103 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6104     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6105
6106 enabled libjack &&
6107     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6108
6109 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6110
6111 if enabled libcdio; then
6112     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6113     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6114     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6115     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6116     die "ERROR: No usable libcdio/cdparanoia found"
6117 fi
6118
6119 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6120     disable libxcb_shm libxcb_shape libxcb_xfixes
6121
6122 if enabled libxcb; then
6123     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6124     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6125     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6126 fi
6127
6128 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6129
6130 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6131 # the desktop api partition
6132 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6133 #ifdef WINAPI_FAMILY
6134 #include <winapifamily.h>
6135 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6136 #error desktop, not uwp
6137 #else
6138 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6139 #endif
6140 #else
6141 #error no family set
6142 #endif
6143 EOF
6144
6145 enabled vaapi &&
6146     check_lib vaapi va/va.h vaInitialize -lva
6147
6148 enabled vaapi &&
6149     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6150     disable vaapi
6151
6152 enabled vaapi &&
6153     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6154
6155 enabled vaapi &&
6156     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6157
6158 enabled vaapi &&
6159     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6160     enable vaapi_1
6161
6162 if enabled_all opencl vaapi ; then
6163     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6164         enable opencl_vaapi_beignet
6165     if enabled libmfx ; then
6166         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6167             enable opencl_vaapi_intel_media
6168     fi
6169 fi
6170
6171 if enabled_all opencl dxva2 ; then
6172     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6173         enable opencl_dxva2
6174 fi
6175
6176 if enabled_all opencl d3d11va ; then
6177     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6178         enable opencl_d3d11
6179 fi
6180
6181 if enabled_all opencl libdrm ; then
6182     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6183         enable opencl_drm_arm
6184 fi
6185
6186 enabled vdpau &&
6187     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6188     disable vdpau
6189
6190 enabled vdpau &&
6191     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6192
6193 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6194
6195 if enabled x86; then
6196     case $target_os in
6197         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6198             ;;
6199         *)
6200             disable cuda cuvid nvdec nvenc
6201             ;;
6202     esac
6203 else
6204     disable cuda cuvid nvdec nvenc
6205 fi
6206
6207 enabled nvenc &&
6208     check_cc -I$source_path <<EOF || disable nvenc
6209 #include "compat/nvenc/nvEncodeAPI.h"
6210 NV_ENCODE_API_FUNCTION_LIST flist;
6211 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6212 int main(void) { return 0; }
6213 EOF
6214
6215 enabled amf &&
6216     check_cpp_condition "AMF/core/Version.h" \
6217         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001" ||
6218     disable amf
6219
6220 # Funny iconv installations are not unusual, so check it after all flags have been set
6221 if enabled libc_iconv; then
6222     check_func_headers iconv.h iconv
6223 elif enabled iconv; then
6224     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6225 fi
6226
6227 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6228
6229 # add some useful compiler flags if supported
6230 check_cflags -Wdeclaration-after-statement
6231 check_cflags -Wall
6232 check_cflags -Wdisabled-optimization
6233 check_cflags -Wpointer-arith
6234 check_cflags -Wredundant-decls
6235 check_cflags -Wwrite-strings
6236 check_cflags -Wtype-limits
6237 check_cflags -Wundef
6238 check_cflags -Wmissing-prototypes
6239 check_cflags -Wno-pointer-to-int-cast
6240 check_cflags -Wstrict-prototypes
6241 check_cflags -Wempty-body
6242
6243 if enabled extra_warnings; then
6244     check_cflags -Wcast-qual
6245     check_cflags -Wextra
6246     check_cflags -Wpedantic
6247 fi
6248
6249 check_disable_warning(){
6250     warning_flag=-W${1#-Wno-}
6251     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6252 }
6253
6254 test_cflags -Werror=unused-command-line-argument &&
6255     append unknown_warning_flags "-Werror=unused-command-line-argument"
6256 test_cflags -Werror=unknown-warning-option &&
6257     append unknown_warning_flags "-Werror=unknown-warning-option"
6258
6259 check_disable_warning -Wno-parentheses
6260 check_disable_warning -Wno-switch
6261 check_disable_warning -Wno-format-zero-length
6262 check_disable_warning -Wno-pointer-sign
6263 check_disable_warning -Wno-unused-const-variable
6264 check_disable_warning -Wno-bool-operation
6265
6266 check_disable_warning_headers(){
6267     warning_flag=-W${1#-Wno-}
6268     test_cflags $warning_flag && add_cflags_headers $1
6269 }
6270
6271 check_disable_warning_headers -Wno-deprecated-declarations
6272 check_disable_warning_headers -Wno-unused-variable
6273
6274 check_cc <<EOF && enable blocks_extension
6275 void (^block)(void);
6276 EOF
6277
6278 # add some linker flags
6279 check_ldflags -Wl,--warn-common
6280 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6281 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6282 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6283
6284 # add some strip flags
6285 check_stripflags -x
6286
6287 enabled neon_clobber_test &&
6288     check_ldflags -Wl,--wrap,avcodec_open2              \
6289                   -Wl,--wrap,avcodec_decode_audio4      \
6290                   -Wl,--wrap,avcodec_decode_video2      \
6291                   -Wl,--wrap,avcodec_decode_subtitle2   \
6292                   -Wl,--wrap,avcodec_encode_audio2      \
6293                   -Wl,--wrap,avcodec_encode_video2      \
6294                   -Wl,--wrap,avcodec_encode_subtitle    \
6295                   -Wl,--wrap,avcodec_send_packet        \
6296                   -Wl,--wrap,avcodec_receive_packet     \
6297                   -Wl,--wrap,avcodec_send_frame         \
6298                   -Wl,--wrap,avcodec_receive_frame      \
6299                   -Wl,--wrap,swr_convert                \
6300                   -Wl,--wrap,avresample_convert ||
6301     disable neon_clobber_test
6302
6303 enabled xmm_clobber_test &&
6304     check_ldflags -Wl,--wrap,avcodec_open2              \
6305                   -Wl,--wrap,avcodec_decode_audio4      \
6306                   -Wl,--wrap,avcodec_decode_video2      \
6307                   -Wl,--wrap,avcodec_decode_subtitle2   \
6308                   -Wl,--wrap,avcodec_encode_audio2      \
6309                   -Wl,--wrap,avcodec_encode_video2      \
6310                   -Wl,--wrap,avcodec_encode_subtitle    \
6311                   -Wl,--wrap,avcodec_send_packet        \
6312                   -Wl,--wrap,avcodec_receive_packet     \
6313                   -Wl,--wrap,avcodec_send_frame         \
6314                   -Wl,--wrap,avcodec_receive_frame      \
6315                   -Wl,--wrap,swr_convert                \
6316                   -Wl,--wrap,avresample_convert         \
6317                   -Wl,--wrap,sws_scale ||
6318     disable xmm_clobber_test
6319
6320 check_ld "cc" <<EOF && enable proper_dce
6321 extern const int array[512];
6322 static inline int func(void) { return array[0]; }
6323 int main(void) { return 0; }
6324 EOF
6325
6326 if enabled proper_dce; then
6327     echo "X { local: *; };" > $TMPV
6328     if test_ldflags -Wl,${version_script},$TMPV; then
6329         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6330         quotes='""'
6331         check_cc <<EOF && enable symver_asm_label
6332 void ff_foo(void) __asm__ ("av_foo@VERSION");
6333 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6334 EOF
6335         check_cc <<EOF && enable symver_gnu_asm
6336 __asm__(".symver ff_foo,av_foo@VERSION");
6337 void ff_foo(void) {}
6338 EOF
6339     fi
6340 fi
6341
6342 if [ -z "$optflags" ]; then
6343     if enabled small; then
6344         optflags=$cflags_size
6345     elif enabled optimizations; then
6346         optflags=$cflags_speed
6347     else
6348         optflags=$cflags_noopt
6349     fi
6350 fi
6351
6352 if [ -z "$nvccflags" ]; then
6353     nvccflags=$nvccflags_default
6354 fi
6355
6356 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6357     nvccflags="$nvccflags -m64"
6358 else
6359     nvccflags="$nvccflags -m32"
6360 fi
6361
6362 check_optflags(){
6363     check_cflags "$@"
6364     enabled lto && check_ldflags "$@"
6365 }
6366
6367 check_optflags $optflags
6368 check_optflags -fno-math-errno
6369 check_optflags -fno-signed-zeros
6370
6371 if enabled lto; then
6372     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6373     check_cflags  -flto
6374     check_ldflags -flto $cpuflags
6375     disable inline_asm_direct_symbol_refs
6376 fi
6377
6378 enabled ftrapv && check_cflags -ftrapv
6379
6380 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6381 int x;
6382 EOF
6383
6384
6385 if enabled icc; then
6386     # Just warnings, no remarks
6387     check_cflags -w1
6388     # -wd: Disable following warnings
6389     # 144, 167, 556: -Wno-pointer-sign
6390     # 188: enumerated type mixed with another type
6391     # 1292: attribute "foo" ignored
6392     # 1419: external declaration in primary source file
6393     # 10006: ignoring unknown option -fno-signed-zeros
6394     # 10148: ignoring unknown option -Wno-parentheses
6395     # 10156: ignoring option '-W'; no argument required
6396     # 13200: No EMMS instruction before call to function
6397     # 13203: No EMMS instruction before return from function
6398     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6399     # 11030: Warning unknown option --as-needed
6400     # 10156: ignoring option '-export'; no argument required
6401     check_ldflags -wd10156,11030
6402     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6403     enable ebp_available
6404     # The test above does not test linking
6405     enabled lto && disable symver_asm_label
6406     if enabled x86_32; then
6407         icc_version=$($cc -dumpversion)
6408         test ${icc_version%%.*} -ge 11 &&
6409             check_cflags -falign-stack=maintain-16-byte ||
6410             disable aligned_stack
6411     fi
6412 elif enabled gcc; then
6413     check_optflags -fno-tree-vectorize
6414     check_cflags -Werror=format-security
6415     check_cflags -Werror=implicit-function-declaration
6416     check_cflags -Werror=missing-prototypes
6417     check_cflags -Werror=return-type
6418     check_cflags -Werror=vla
6419     check_cflags -Wformat
6420     check_cflags -fdiagnostics-color=auto
6421     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6422 elif enabled llvm_gcc; then
6423     check_cflags -mllvm -stack-alignment=16
6424 elif enabled clang; then
6425     check_cflags -mllvm -stack-alignment=16
6426     check_cflags -mstack-alignment=16
6427     check_cflags -Qunused-arguments
6428     check_cflags -Werror=implicit-function-declaration
6429     check_cflags -Werror=missing-prototypes
6430     check_cflags -Werror=return-type
6431 elif enabled cparser; then
6432     add_cflags -Wno-missing-variable-declarations
6433     add_cflags -Wno-empty-statement
6434 elif enabled armcc; then
6435     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6436     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6437     # 2523: use of inline assembly is deprecated
6438     add_cflags -W${armcc_opt},--diag_suppress=2523
6439     add_cflags -W${armcc_opt},--diag_suppress=1207
6440     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6441     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6442     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6443     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6444 elif enabled pathscale; then
6445     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6446     disable inline_asm
6447 elif enabled_any msvc icl; then
6448     enabled x86_32 && disable aligned_stack
6449     enabled_all x86_32 debug && add_cflags -Oy-
6450     enabled debug && add_ldflags -debug
6451     enable pragma_deprecated
6452     if enabled icl; then
6453         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6454         # (correctly) on icl 13.x.
6455         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6456             add_cflags -Qansi-alias
6457         # Some inline asm is not compilable in debug
6458         if enabled debug; then
6459             disable ebp_available
6460             disable ebx_available
6461         fi
6462     fi
6463     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6464     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6465     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6466     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6467     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6468     # MSVC 2013 and newer can handle it fine.
6469     # If this declspec fails, force including stdlib.h before the restrict redefinition
6470     # happens in config.h.
6471     if [ $_restrict != restrict ]; then
6472         check_cc <<EOF || add_cflags -FIstdlib.h
6473 __declspec($_restrict) void* foo(int);
6474 EOF
6475     fi
6476     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6477     # Issue has been fixed in MSVC v19.00.24218.
6478     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6479         check_cflags -d2SSAOptimizer-
6480     # enable utf-8 source processing on VS2015 U2 and newer
6481     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6482         add_cflags -utf-8
6483 fi
6484
6485 for pfx in "" host_; do
6486     varname=${pfx%_}cc_type
6487     eval "type=\$$varname"
6488     if [ "$type" = "msvc" ]; then
6489         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6490 static inline int foo(int a) { return a; }
6491 EOF
6492     fi
6493 done
6494
6495 case $as_type in
6496     clang)
6497         add_asflags -Qunused-arguments
6498     ;;
6499 esac
6500
6501 case $ld_type in
6502     clang)
6503         check_ldflags -Qunused-arguments
6504     ;;
6505 esac
6506
6507 enable frame_thread_encoder
6508
6509 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6510
6511 check_deps $CONFIG_LIST       \
6512            $CONFIG_EXTRA      \
6513            $HAVE_LIST         \
6514            $ALL_COMPONENTS    \
6515
6516 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"
6517 enabled avresample && warn "Building with deprecated library libavresample"
6518
6519 if test $target_os = "haiku"; then
6520     disable memalign
6521     disable posix_memalign
6522 fi
6523
6524 flatten_extralibs(){
6525     unset nested_entries
6526     list_name=$1
6527     eval list=\$${1}
6528     for entry in $list; do
6529         entry_copy=$entry
6530         resolve entry_copy
6531         append nested_entries $(filter '*_extralibs' $entry_copy)
6532         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6533         eval $entry="\$flat_entries"
6534     done
6535     append $list_name "$nested_entries"
6536
6537     resolve nested_entries
6538     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6539         flatten_extralibs $list_name
6540     fi
6541 }
6542
6543 flatten_extralibs_wrapper(){
6544     list_name=$1
6545     flatten_extralibs $list_name
6546     unique $list_name
6547     resolve $list_name
6548     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6549     eval printf \''%s'\' \""\$$list_name"\"
6550 }
6551
6552 for linkunit in $LIBRARY_LIST; do
6553     unset current_extralibs
6554     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6555     for comp in ${components}; do
6556         enabled $comp || continue
6557         comp_extralibs="${comp}_extralibs"
6558         append current_extralibs $comp_extralibs
6559     done
6560     eval prepend ${linkunit}_extralibs $current_extralibs
6561 done
6562
6563 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6564     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6565 done
6566
6567 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6568
6569 for thread in $THREADS_LIST; do
6570     if enabled $thread; then
6571         test -n "$thread_type" &&
6572             die "ERROR: Only one thread type must be selected." ||
6573             thread_type="$thread"
6574     fi
6575 done
6576
6577 if disabled stdatomic; then
6578     if enabled atomics_gcc; then
6579         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6580     elif enabled atomics_win32; then
6581         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6582     elif enabled atomics_suncc; then
6583         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6584     elif enabled pthreads; then
6585         add_compat atomics/pthread/stdatomic.o
6586         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6587     else
6588         enabled threads && die "Threading is enabled, but no atomics are available"
6589         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6590     fi
6591 fi
6592
6593 # Check if requested libraries were found.
6594 for lib in $AUTODETECT_LIBS; do
6595     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6596 done
6597
6598 enabled zlib && add_cppflags -DZLIB_CONST
6599
6600 # conditional library dependencies, in linking order
6601 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6602 enabled afir_filter         && prepend avfilter_deps "avcodec"
6603 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6604 enabled aresample_filter    && prepend avfilter_deps "swresample"
6605 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6606 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6607 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6608 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6609 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6610 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6611 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6612 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6613 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6614 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6615 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6616 enabled pan_filter          && prepend avfilter_deps "swresample"
6617 enabled pp_filter           && prepend avfilter_deps "postproc"
6618 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6619 enabled resample_filter && prepend avfilter_deps "avresample"
6620 enabled sab_filter          && prepend avfilter_deps "swscale"
6621 enabled scale_filter    && prepend avfilter_deps "swscale"
6622 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6623 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6624 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6625 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6626 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6627 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6628 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6629 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6630 enabled spp_filter          && prepend avfilter_deps "avcodec"
6631 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6632 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6633 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6634
6635 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6636
6637 #FIXME
6638 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6639
6640 enabled opus_decoder    && prepend avcodec_deps "swresample"
6641
6642 expand_deps(){
6643     lib_deps=${1}_deps
6644     eval "deps=\$$lib_deps"
6645     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6646     unique $lib_deps
6647 }
6648
6649 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6650 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6651
6652 map 'expand_deps $v' $LIBRARY_LIST
6653
6654 license="LGPL version 2.1 or later"
6655 if enabled nonfree; then
6656     license="nonfree and unredistributable"
6657 elif enabled gplv3; then
6658     license="GPL version 3 or later"
6659 elif enabled lgplv3; then
6660     license="LGPL version 3 or later"
6661 elif enabled gpl; then
6662     license="GPL version 2 or later"
6663 fi
6664
6665 if test "$quiet" != "yes"; then
6666
6667 echo "install prefix            $prefix"
6668 echo "source path               $source_path"
6669 echo "C compiler                $cc"
6670 echo "C library                 $libc_type"
6671 if test "$host_cc" != "$cc"; then
6672     echo "host C compiler           $host_cc"
6673     echo "host C library            $host_libc_type"
6674 fi
6675 echo "ARCH                      $arch ($cpu)"
6676 if test "$build_suffix" != ""; then
6677     echo "build suffix              $build_suffix"
6678 fi
6679 if test "$progs_suffix" != ""; then
6680     echo "progs suffix              $progs_suffix"
6681 fi
6682 if test "$extra_version" != ""; then
6683     echo "version string suffix     $extra_version"
6684 fi
6685 echo "big-endian                ${bigendian-no}"
6686 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6687 if enabled x86; then
6688     echo "standalone assembly       ${x86asm-no}"
6689     echo "x86 assembler             ${x86asmexe}"
6690     echo "MMX enabled               ${mmx-no}"
6691     echo "MMXEXT enabled            ${mmxext-no}"
6692     echo "3DNow! enabled            ${amd3dnow-no}"
6693     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6694     echo "SSE enabled               ${sse-no}"
6695     echo "SSSE3 enabled             ${ssse3-no}"
6696     echo "AESNI enabled             ${aesni-no}"
6697     echo "AVX enabled               ${avx-no}"
6698     echo "AVX2 enabled              ${avx2-no}"
6699     echo "AVX-512 enabled           ${avx512-no}"
6700     echo "XOP enabled               ${xop-no}"
6701     echo "FMA3 enabled              ${fma3-no}"
6702     echo "FMA4 enabled              ${fma4-no}"
6703     echo "i686 features enabled     ${i686-no}"
6704     echo "CMOV is fast              ${fast_cmov-no}"
6705     echo "EBX available             ${ebx_available-no}"
6706     echo "EBP available             ${ebp_available-no}"
6707 fi
6708 if enabled aarch64; then
6709     echo "NEON enabled              ${neon-no}"
6710     echo "VFP enabled               ${vfp-no}"
6711 fi
6712 if enabled arm; then
6713     echo "ARMv5TE enabled           ${armv5te-no}"
6714     echo "ARMv6 enabled             ${armv6-no}"
6715     echo "ARMv6T2 enabled           ${armv6t2-no}"
6716     echo "VFP enabled               ${vfp-no}"
6717     echo "NEON enabled              ${neon-no}"
6718     echo "THUMB enabled             ${thumb-no}"
6719 fi
6720 if enabled mips; then
6721     echo "MIPS FPU enabled          ${mipsfpu-no}"
6722     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6723     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6724     echo "MIPS MSA enabled          ${msa-no}"
6725     echo "LOONGSON MMI enabled      ${mmi-no}"
6726 fi
6727 if enabled ppc; then
6728     echo "AltiVec enabled           ${altivec-no}"
6729     echo "VSX enabled               ${vsx-no}"
6730     echo "POWER8 enabled            ${power8-no}"
6731     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6732     echo "dcbzl available           ${dcbzl-no}"
6733 fi
6734 echo "debug symbols             ${debug-no}"
6735 echo "strip symbols             ${stripping-no}"
6736 echo "optimize for size         ${small-no}"
6737 echo "optimizations             ${optimizations-no}"
6738 echo "static                    ${static-no}"
6739 echo "shared                    ${shared-no}"
6740 echo "postprocessing support    ${postproc-no}"
6741 echo "network support           ${network-no}"
6742 echo "threading support         ${thread_type-no}"
6743 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6744 echo "texi2html enabled         ${texi2html-no}"
6745 echo "perl enabled              ${perl-no}"
6746 echo "pod2man enabled           ${pod2man-no}"
6747 echo "makeinfo enabled          ${makeinfo-no}"
6748 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6749 test -n "$random_seed" &&
6750     echo "random seed               ${random_seed}"
6751 echo
6752
6753 echo "External libraries:"
6754 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6755 echo
6756
6757 echo "External libraries providing hardware acceleration:"
6758 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6759 echo
6760
6761 echo "Libraries:"
6762 print_enabled '' $LIBRARY_LIST | print_in_columns
6763 echo
6764
6765 echo "Programs:"
6766 print_enabled '' $PROGRAM_LIST | print_in_columns
6767 echo
6768
6769 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6770     echo "Enabled ${type}s:"
6771     eval list=\$$(toupper $type)_LIST
6772     print_enabled '_*' $list | print_in_columns
6773     echo
6774 done
6775
6776 if test -n "$ignore_tests"; then
6777     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6778     echo "Ignored FATE tests:"
6779     echo $ignore_tests | print_in_columns
6780     echo
6781 fi
6782
6783 echo "License: $license"
6784
6785 fi # test "$quiet" != "yes"
6786
6787 if test -n "$WARNINGS"; then
6788     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6789     enabled fatal_warnings && exit 1
6790 fi
6791
6792 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6793
6794 esc(){
6795     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6796 }
6797
6798 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6799
6800 enabled stripping || strip="echo skipping strip"
6801 enabled stripping || striptype=""
6802
6803 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6804
6805 cat > ffbuild/config.mak <<EOF
6806 # Automatically generated by configure - do not modify!
6807 ifndef FFMPEG_CONFIG_MAK
6808 FFMPEG_CONFIG_MAK=1
6809 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6810 prefix=$prefix
6811 LIBDIR=\$(DESTDIR)$libdir
6812 SHLIBDIR=\$(DESTDIR)$shlibdir
6813 INCDIR=\$(DESTDIR)$incdir
6814 BINDIR=\$(DESTDIR)$bindir
6815 DATADIR=\$(DESTDIR)$datadir
6816 DOCDIR=\$(DESTDIR)$docdir
6817 MANDIR=\$(DESTDIR)$mandir
6818 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6819 INSTALL_NAME_DIR=$install_name_dir
6820 SRC_PATH=$source_path
6821 SRC_LINK=$source_link
6822 ifndef MAIN_MAKEFILE
6823 SRC_PATH:=\$(SRC_PATH:.%=..%)
6824 endif
6825 CC_IDENT=$cc_ident
6826 ARCH=$arch
6827 INTRINSICS=$intrinsics
6828 EXTERN_PREFIX=$extern_prefix
6829 CC=$cc
6830 CXX=$cxx
6831 AS=$as
6832 OBJCC=$objcc
6833 LD=$ld
6834 DEPCC=$dep_cc
6835 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6836 DEPAS=$as
6837 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6838 X86ASM=$x86asmexe
6839 DEPX86ASM=$x86asmexe
6840 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6841 AR=$ar
6842 ARFLAGS=$arflags
6843 AR_O=$ar_o
6844 AR_CMD=$ar
6845 NM_CMD=$nm
6846 RANLIB=$ranlib
6847 STRIP=$strip
6848 STRIPTYPE=$striptype
6849 NVCC=$nvcc
6850 CP=cp -p
6851 LN_S=$ln_s
6852 CPPFLAGS=$CPPFLAGS
6853 CFLAGS=$CFLAGS
6854 CXXFLAGS=$CXXFLAGS
6855 OBJCFLAGS=$OBJCFLAGS
6856 ASFLAGS=$ASFLAGS
6857 NVCCFLAGS=$nvccflags
6858 AS_C=$AS_C
6859 AS_O=$AS_O
6860 OBJCC_C=$OBJCC_C
6861 OBJCC_E=$OBJCC_E
6862 OBJCC_O=$OBJCC_O
6863 CC_C=$CC_C
6864 CC_E=$CC_E
6865 CC_O=$CC_O
6866 CXX_C=$CXX_C
6867 CXX_O=$CXX_O
6868 NVCC_C=$NVCC_C
6869 NVCC_O=$NVCC_O
6870 LD_O=$LD_O
6871 X86ASM_O=$X86ASM_O
6872 LD_LIB=$LD_LIB
6873 LD_PATH=$LD_PATH
6874 WINDRES=$windres
6875 DEPWINDRES=$dep_cc
6876 DOXYGEN=$doxygen
6877 LDFLAGS=$LDFLAGS
6878 LDEXEFLAGS=$LDEXEFLAGS
6879 LDSOFLAGS=$LDSOFLAGS
6880 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6881 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6882 X86ASMFLAGS=$X86ASMFLAGS
6883 BUILDSUF=$build_suffix
6884 PROGSSUF=$progs_suffix
6885 FULLNAME=$FULLNAME
6886 LIBPREF=$LIBPREF
6887 LIBSUF=$LIBSUF
6888 LIBNAME=$LIBNAME
6889 SLIBPREF=$SLIBPREF
6890 SLIBSUF=$SLIBSUF
6891 EXESUF=$EXESUF
6892 EXTRA_VERSION=$extra_version
6893 CCDEP=$CCDEP
6894 CXXDEP=$CXXDEP
6895 CCDEP_FLAGS=$CCDEP_FLAGS
6896 ASDEP=$ASDEP
6897 ASDEP_FLAGS=$ASDEP_FLAGS
6898 X86ASMDEP=$X86ASMDEP
6899 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6900 CC_DEPFLAGS=$CC_DEPFLAGS
6901 AS_DEPFLAGS=$AS_DEPFLAGS
6902 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6903 HOSTCC=$host_cc
6904 HOSTLD=$host_ld
6905 HOSTCFLAGS=$host_cflags
6906 HOSTCPPFLAGS=$host_cppflags
6907 HOSTEXESUF=$HOSTEXESUF
6908 HOSTLDFLAGS=$host_ldflags
6909 HOSTEXTRALIBS=$host_extralibs
6910 DEPHOSTCC=$host_cc
6911 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6912 HOSTCCDEP=$HOSTCCDEP
6913 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6914 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6915 HOSTCC_C=$HOSTCC_C
6916 HOSTCC_O=$HOSTCC_O
6917 HOSTLD_O=$HOSTLD_O
6918 TARGET_EXEC=$target_exec $target_exec_args
6919 TARGET_PATH=$target_path
6920 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6921 CFLAGS-ffplay=${sdl2_cflags}
6922 CFLAGS_HEADERS=$CFLAGS_HEADERS
6923 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6924 EXTRALIBS=$extralibs
6925 COMPAT_OBJS=$compat_objs
6926 INSTALL=$install
6927 SLIBNAME=${SLIBNAME}
6928 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6929 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6930 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6931 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6932 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6933 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6934 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6935 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6936 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6937 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6938 NOREDZONE_FLAGS=$noredzone_flags
6939 LIBFUZZER_PATH=$libfuzzer_path
6940 IGNORE_TESTS=$ignore_tests
6941 EOF
6942
6943 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6944
6945 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6946     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6947 done
6948
6949 cat > $TMPH <<EOF
6950 /* Automatically generated by configure - do not modify! */
6951 #ifndef FFMPEG_CONFIG_H
6952 #define FFMPEG_CONFIG_H
6953 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6954 #define FFMPEG_LICENSE "$(c_escape $license)"
6955 #define CONFIG_THIS_YEAR 2018
6956 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6957 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6958 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6959 #define av_restrict $_restrict
6960 #define EXTERN_PREFIX "${extern_prefix}"
6961 #define EXTERN_ASM ${extern_prefix}
6962 #define BUILDSUF "$build_suffix"
6963 #define SLIBSUF "$SLIBSUF"
6964 #define HAVE_MMX2 HAVE_MMXEXT
6965 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6966 EOF
6967
6968 test -n "$assert_level" &&
6969     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6970
6971 test -n "$malloc_prefix" &&
6972     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6973
6974 if enabled x86asm; then
6975     append config_files $TMPASM
6976     cat > $TMPASM <<EOF
6977 ; Automatically generated by configure - do not modify!
6978 EOF
6979 fi
6980
6981 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6982
6983
6984 mkdir -p doc
6985 mkdir -p tests
6986 mkdir -p tests/api
6987 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6988
6989 print_config ARCH_   "$config_files" $ARCH_LIST
6990 print_config HAVE_   "$config_files" $HAVE_LIST
6991 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6992                                      $CONFIG_EXTRA      \
6993                                      $ALL_COMPONENTS    \
6994
6995 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6996 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6997
6998 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6999 cp_if_changed $TMPH config.h
7000 touch ffbuild/.config
7001
7002 enabled x86asm && cp_if_changed $TMPASM config.asm
7003
7004 cat > $TMPH <<EOF
7005 /* Generated by ffmpeg configure */
7006 #ifndef AVUTIL_AVCONFIG_H
7007 #define AVUTIL_AVCONFIG_H
7008 EOF
7009
7010 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7011
7012 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7013
7014 cp_if_changed $TMPH libavutil/avconfig.h
7015
7016 # generate the lists of enabled components
7017 print_enabled_components(){
7018     file=$1
7019     struct_name=$2
7020     name=$3
7021     shift 3
7022     echo "static const $struct_name * const $name[] = {" > $TMPH
7023     for c in $*; do
7024         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7025     done
7026     echo "    NULL };" >> $TMPH
7027     cp_if_changed $TMPH $file
7028 }
7029
7030 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7031 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7032
7033 # Settings for pkg-config files
7034
7035 cat > $TMPH <<EOF
7036 # Automatically generated by configure - do not modify!
7037 shared=$shared
7038 build_suffix=$build_suffix
7039 prefix=$prefix
7040 libdir=$libdir
7041 incdir=$incdir
7042 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7043 source_path=${source_path}
7044 LIBPREF=${LIBPREF}
7045 LIBSUF=${LIBSUF}
7046 extralibs_avutil="$avutil_extralibs"
7047 extralibs_avcodec="$avcodec_extralibs"
7048 extralibs_avformat="$avformat_extralibs"
7049 extralibs_avdevice="$avdevice_extralibs"
7050 extralibs_avfilter="$avfilter_extralibs"
7051 extralibs_avresample="$avresample_extralibs"
7052 extralibs_postproc="$postproc_extralibs"
7053 extralibs_swscale="$swscale_extralibs"
7054 extralibs_swresample="$swresample_extralibs"
7055 EOF
7056
7057 for lib in $LIBRARY_LIST; do
7058     lib_deps="$(eval echo \$${lib}_deps)"
7059     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7060 done
7061
7062 cp_if_changed $TMPH ffbuild/config.sh