git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --disable-jack           disable libjack support [autodetect]
 221   --enable-jni             enable JNI support [no]
 222   --enable-ladspa          enable LADSPA audio filtering [no]
 223   --enable-libass          enable libass subtitles rendering,
 224                            needed for subtitles and ass filter [no]
 225   --enable-libbluray       enable BluRay reading using libbluray [no]
 226   --enable-libbs2b         enable bs2b DSP library [no]
 227   --enable-libcaca         enable textual display using libcaca [no]
 228   --enable-libcelt         enable CELT decoding via libcelt [no]
 229   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 231                            and libraw1394 [no]
 232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 237   --enable-libgme          enable Game Music Emu via libgme [no]
 238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 240   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 317   --enable-omx             enable OpenMAX IL code [no]
 318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 319   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 320   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 321   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 322   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 323
 324 Toolchain options:
 325   --arch=ARCH              select architecture [$arch]
 326   --cpu=CPU                select the minimum required CPU (affects
 327                            instruction selection, may crash on older CPUs)
 328   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 329   --progs-suffix=SUFFIX    program name suffix []
 330   --enable-cross-compile   assume a cross-compiler is used
 331   --sysroot=PATH           root of cross-build tree
 332   --sysinclude=PATH        location of cross-build system headers
 333   --target-os=OS           compiler targets OS [$target_os]
 334   --target-exec=CMD        command to run executables on target
 335   --target-path=DIR        path to view of build directory on target
 336   --target-samples=DIR     path to samples directory on target
 337   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 338   --toolchain=NAME         set tool defaults according to NAME
 339   --nm=NM                  use nm tool NM [$nm_default]
 340   --ar=AR                  use archive tool AR [$ar_default]
 341   --as=AS                  use assembler AS [$as_default]
 342   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 343   --strip=STRIP            use strip tool STRIP [$strip_default]
 344   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 345   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 346   --cc=CC                  use C compiler CC [$cc_default]
 347   --cxx=CXX                use C compiler CXX [$cxx_default]
 348   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 349   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 350   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 351   --ld=LD                  use linker LD [$ld_default]
 352   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 353   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 354   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 355   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 356   --host-cc=HOSTCC         use host C compiler HOSTCC
 357   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 358   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 359   --host-ld=HOSTLD         use host linker HOSTLD
 360   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 361   --host-libs=HLIBS        use libs HLIBS when linking for host
 362   --host-os=OS             compiler host OS [$target_os]
 363   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 364   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 365   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 366   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 367   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 368   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 369   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 370   --extra-version=STRING   version string suffix []
 371   --optflags=OPTFLAGS      override optimization-related compiler flags
 372   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 373   --build-suffix=SUFFIX    library name suffix []
 374   --enable-pic             build position-independent code
 375   --enable-thumb           compile for Thumb instruction set
 376   --enable-lto             use link-time optimization
 377   --env="ENV=override"     override the environment variables
 378
 379 Advanced options (experts only):
 380   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 381   --custom-allocator=NAME  use a supported custom allocator
 382   --disable-symver         disable symbol versioning
 383   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 384   --disable-safe-bitstream-reader
 385                            disable buffer boundary checking in bitreaders
 386                            (faster, but may crash)
 387   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 388
 389 Optimization options (experts only):
 390   --disable-asm            disable all assembly optimizations
 391   --disable-altivec        disable AltiVec optimizations
 392   --disable-vsx            disable VSX optimizations
 393   --disable-power8         disable POWER8 optimizations
 394   --disable-amd3dnow       disable 3DNow! optimizations
 395   --disable-amd3dnowext    disable 3DNow! extended optimizations
 396   --disable-mmx            disable MMX optimizations
 397   --disable-mmxext         disable MMXEXT optimizations
 398   --disable-sse            disable SSE optimizations
 399   --disable-sse2           disable SSE2 optimizations
 400   --disable-sse3           disable SSE3 optimizations
 401   --disable-ssse3          disable SSSE3 optimizations
 402   --disable-sse4           disable SSE4 optimizations
 403   --disable-sse42          disable SSE4.2 optimizations
 404   --disable-avx            disable AVX optimizations
 405   --disable-xop            disable XOP optimizations
 406   --disable-fma3           disable FMA3 optimizations
 407   --disable-fma4           disable FMA4 optimizations
 408   --disable-avx2           disable AVX2 optimizations
 409   --disable-aesni          disable AESNI optimizations
 410   --disable-armv5te        disable armv5te optimizations
 411   --disable-armv6          disable armv6 optimizations
 412   --disable-armv6t2        disable armv6t2 optimizations
 413   --disable-vfp            disable VFP optimizations
 414   --disable-neon           disable NEON optimizations
 415   --disable-inline-asm     disable use of inline assembly
 416   --disable-x86asm         disable use of standalone x86 assembly
 417   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 418   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 419   --disable-msa            disable MSA optimizations
 420   --disable-mipsfpu        disable floating point MIPS optimizations
 421   --disable-mmi            disable Loongson SIMD optimizations
 422   --disable-fast-unaligned consider unaligned accesses slow
 423
 424 Developer options (useful when working on FFmpeg itself):
 425   --disable-debug          disable debugging symbols
 426   --enable-debug=LEVEL     set the debug level [$debuglevel]
 427   --disable-optimizations  disable compiler optimizations
 428   --enable-extra-warnings  enable more compiler warnings
 429   --disable-stripping      disable stripping of executables and shared libraries
 430   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 431                            2 causes a slowdown at runtime.
 432   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 433   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 434                            leaks and errors, using the specified valgrind binary.
 435                            Cannot be combined with --target-exec
 436   --enable-ftrapv          Trap arithmetic overflows
 437   --samples=PATH           location of test samples for FATE, if not set use
 438                            \$FATE_SAMPLES at make invocation time.
 439   --enable-neon-clobber-test check NEON registers for clobbering (should be
 440                            used only for debugging purposes)
 441   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 442                            should be used only for debugging purposes)
 443   --enable-random          randomly enable/disable components
 444   --disable-random
 445   --enable-random=LIST     randomly enable/disable specific components or
 446   --disable-random=LIST    component groups. LIST is a comma-separated list
 447                            of NAME[:PROB] entries where NAME is a component
 448                            (group) and PROB the probability associated with
 449                            NAME (default 0.5).
 450   --random-seed=VALUE      seed value for --enable/disable-random
 451   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 452                            (only applies to --disable-optimizations builds)
 453   --enable-osfuzz          Enable building fuzzer tool
 454   --libfuzzer=PATH         path to libfuzzer
 455   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 456                            in the name) of tests whose result is ignored
 457   --enable-linux-perf      enable Linux Performance Monitor API
 458
 459 NOTE: Object files are built at the place where configure is launched.
 460 EOF
 461   exit 0
 462 }
 463
 464 quotes='""'
 465 if test -t 1 && which tput >/dev/null 2>&1; then
 466     ncolors=$(tput colors)
 467     if test -n "$ncolors" && test $ncolors -ge 8; then
 468         bold_color=$(tput bold)
 469         warn_color=$(tput setaf 3)
 470         error_color=$(tput setaf 1)
 471         reset_color=$(tput sgr0)
 472     fi
 473     # 72 used instead of 80 since that's the default of pr
 474     ncols=$(tput cols)
 475 fi
 476 : ${ncols:=72}
 477
 478 log(){
 479     echo "$@" >> $logfile
 480 }
 481
 482 log_file(){
 483     log BEGIN $1
 484     pr -n -t $1 >> $logfile
 485     log END $1
 486 }
 487
 488 warn(){
 489     log "WARNING: $*"
 490     WARNINGS="${WARNINGS}WARNING: $*\n"
 491 }
 492
 493 die(){
 494     log "$@"
 495     echo "$error_color$bold_color$@$reset_color"
 496     cat <<EOF
 497
 498 If you think configure made a mistake, make sure you are using the latest
 499 version from Git.  If the latest version fails, report the problem to the
 500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 501 EOF
 502     if disabled logging; then
 503         cat <<EOF
 504 Rerun configure with logging enabled (do not use --disable-logging), and
 505 include the log this produces with your report.
 506 EOF
 507     else
 508         cat <<EOF
 509 Include the log file "$logfile" produced by configure as this will help
 510 solve the problem.
 511 EOF
 512     fi
 513     exit 1
 514 }
 515
 516 # Avoid locale weirdness, besides we really just want to translate ASCII.
 517 toupper(){
 518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 519 }
 520
 521 tolower(){
 522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 523 }
 524
 525 c_escape(){
 526     echo "$*" | sed 's/["\\]/\\\0/g'
 527 }
 528
 529 sh_quote(){
 530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 532     echo "$v"
 533 }
 534
 535 cleanws(){
 536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 537 }
 538
 539 filter(){
 540     pat=$1
 541     shift
 542     for v; do
 543         eval "case $v in $pat) printf '%s ' $v ;; esac"
 544     done
 545 }
 546
 547 filter_out(){
 548     pat=$1
 549     shift
 550     for v; do
 551         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 552     done
 553 }
 554
 555 map(){
 556     m=$1
 557     shift
 558     for v; do eval $m; done
 559 }
 560
 561 add_suffix(){
 562     suffix=$1
 563     shift
 564     for v; do echo ${v}${suffix}; done
 565 }
 566
 567 set_all(){
 568     value=$1
 569     shift
 570     for var in $*; do
 571         eval $var=$value
 572     done
 573 }
 574
 575 set_weak(){
 576     value=$1
 577     shift
 578     for var; do
 579         eval : \${$var:=$value}
 580     done
 581 }
 582
 583 sanitize_var_name(){
 584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 585 }
 586
 587 set_safe(){
 588     var=$1
 589     shift
 590     eval $(sanitize_var_name "$var")='$*'
 591 }
 592
 593 get_safe(){
 594     eval echo \$$(sanitize_var_name "$1")
 595 }
 596
 597 pushvar(){
 598     for pvar in $*; do
 599         eval level=\${${pvar}_level:=0}
 600         eval ${pvar}_${level}="\$$pvar"
 601         eval ${pvar}_level=$(($level+1))
 602     done
 603 }
 604
 605 popvar(){
 606     for pvar in $*; do
 607         eval level=\${${pvar}_level:-0}
 608         test $level = 0 && continue
 609         eval level=$(($level-1))
 610         eval $pvar="\${${pvar}_${level}}"
 611         eval ${pvar}_level=$level
 612         eval unset ${pvar}_${level}
 613     done
 614 }
 615
 616 request(){
 617     for var in $*; do
 618         eval ${var}_requested=yes
 619         eval $var=
 620     done
 621 }
 622
 623 enable(){
 624     set_all yes $*
 625 }
 626
 627 disable(){
 628     set_all no $*
 629 }
 630
 631 enable_weak(){
 632     set_weak yes $*
 633 }
 634
 635 disable_weak(){
 636     set_weak no $*
 637 }
 638
 639 enable_safe(){
 640     for var; do
 641         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 642     done
 643 }
 644
 645 disable_safe(){
 646     for var; do
 647         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 648     done
 649 }
 650
 651 do_enable_deep(){
 652     for var; do
 653         enabled $var && continue
 654         eval sel="\$${var}_select"
 655         eval sgs="\$${var}_suggest"
 656         pushvar var sgs
 657         enable_deep $sel
 658         popvar sgs
 659         enable_deep_weak $sgs
 660         popvar var
 661     done
 662 }
 663
 664 enable_deep(){
 665     do_enable_deep $*
 666     enable $*
 667 }
 668
 669 enable_deep_weak(){
 670     for var; do
 671         disabled $var && continue
 672         pushvar var
 673         do_enable_deep $var
 674         popvar var
 675         enable_weak $var
 676     done
 677 }
 678
 679 requested(){
 680     test "${1#!}" = "$1" && op='=' || op=!=
 681     eval test "x\$${1#!}_requested" $op "xyes"
 682 }
 683
 684 enabled(){
 685     test "${1#!}" = "$1" && op='=' || op=!=
 686     eval test "x\$${1#!}" $op "xyes"
 687 }
 688
 689 disabled(){
 690     test "${1#!}" = "$1" && op='=' || op=!=
 691     eval test "x\$${1#!}" $op "xno"
 692 }
 693
 694 enabled_all(){
 695     for opt; do
 696         enabled $opt || return 1
 697     done
 698 }
 699
 700 disabled_all(){
 701     for opt; do
 702         disabled $opt || return 1
 703     done
 704 }
 705
 706 enabled_any(){
 707     for opt; do
 708         enabled $opt && return 0
 709     done
 710 }
 711
 712 disabled_any(){
 713     for opt; do
 714         disabled $opt && return 0
 715     done
 716     return 1
 717 }
 718
 719 set_default(){
 720     for opt; do
 721         eval : \${$opt:=\$${opt}_default}
 722     done
 723 }
 724
 725 is_in(){
 726     value=$1
 727     shift
 728     for var in $*; do
 729         [ $var = $value ] && return 0
 730     done
 731     return 1
 732 }
 733
 734 do_check_deps(){
 735     for cfg; do
 736         cfg="${cfg#!}"
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740         append allopts $cfg
 741
 742         eval dep_all="\$${cfg}_deps"
 743         eval dep_any="\$${cfg}_deps_any"
 744         eval dep_sel="\$${cfg}_select"
 745         eval dep_sgs="\$${cfg}_suggest"
 746         eval dep_ifa="\$${cfg}_if"
 747         eval dep_ifn="\$${cfg}_if_any"
 748
 749         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 750         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 751         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 752
 753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 758
 759         if enabled $cfg; then
 760             enable_deep $dep_sel
 761             enable_deep_weak $dep_sgs
 762         fi
 763
 764         disable ${cfg}_checking
 765     done
 766 }
 767
 768 check_deps(){
 769     unset allopts
 770
 771     do_check_deps "$@"
 772
 773     for cfg in $allopts; do
 774         enabled $cfg || continue
 775         eval dep_extralibs="\$${cfg}_extralibs"
 776         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 777     done
 778 }
 779
 780 print_config(){
 781     pfx=$1
 782     files=$2
 783     shift 2
 784     map 'eval echo "$v \${$v:-no}"' "$@" |
 785     awk "BEGIN { split(\"$files\", files) }
 786         {
 787             c = \"$pfx\" toupper(\$1);
 788             v = \$2;
 789             sub(/yes/, 1, v);
 790             sub(/no/,  0, v);
 791             for (f in files) {
 792                 file = files[f];
 793                 if (file ~ /\\.h\$/) {
 794                     printf(\"#define %s %d\\n\", c, v) >>file;
 795                 } else if (file ~ /\\.asm\$/) {
 796                     printf(\"%%define %s %d\\n\", c, v) >>file;
 797                 } else if (file ~ /\\.mak\$/) {
 798                     n = -v ? \"\" : \"!\";
 799                     printf(\"%s%s=yes\\n\", n, c) >>file;
 800                 } else if (file ~ /\\.texi\$/) {
 801                     pre = -v ? \"\" : \"@c \";
 802                     yesno = \$2;
 803                     c2 = tolower(c);
 804                     gsub(/_/, \"-\", c2);
 805                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 806                 }
 807             }
 808         }"
 809 }
 810
 811 print_enabled(){
 812     suf=$1
 813     shift
 814     for v; do
 815         enabled $v && printf "%s\n" ${v%$suf}
 816     done
 817 }
 818
 819 append(){
 820     var=$1
 821     shift
 822     eval "$var=\"\$$var $*\""
 823 }
 824
 825 prepend(){
 826     var=$1
 827     shift
 828     eval "$var=\"$* \$$var\""
 829 }
 830
 831 unique(){
 832     var=$1
 833     uniq_list=""
 834     for tok in $(eval echo \$$var); do
 835         uniq_list="$(filter_out $tok $uniq_list) $tok"
 836     done
 837     eval "$var=\"${uniq_list}\""
 838 }
 839
 840 add_cppflags(){
 841     append CPPFLAGS "$@"
 842 }
 843
 844 add_cflags(){
 845     append CFLAGS $($cflags_filter "$@")
 846 }
 847
 848 add_cflags_headers(){
 849     append CFLAGS_HEADERS $($cflags_filter "$@")
 850 }
 851
 852 add_cxxflags(){
 853     append CXXFLAGS $($cflags_filter "$@")
 854 }
 855
 856 add_asflags(){
 857     append ASFLAGS $($asflags_filter "$@")
 858 }
 859
 860 add_objcflags(){
 861     append OBJCFLAGS $($objcflags_filter "$@")
 862 }
 863
 864 add_ldflags(){
 865     append LDFLAGS $($ldflags_filter "$@")
 866 }
 867
 868 add_ldexeflags(){
 869     append LDEXEFLAGS $($ldflags_filter "$@")
 870 }
 871
 872 add_ldlibflags(){
 873     append LDLIBFLAGS $($ldflags_filter "$@")
 874 }
 875
 876 add_stripflags(){
 877     append ASMSTRIPFLAGS "$@"
 878 }
 879
 880 add_extralibs(){
 881     prepend extralibs $($ldflags_filter "$@")
 882 }
 883
 884 add_host_cppflags(){
 885     append host_cppflags "$@"
 886 }
 887
 888 add_host_cflags(){
 889     append host_cflags $($host_cflags_filter "$@")
 890 }
 891
 892 add_host_ldflags(){
 893     append host_ldflags $($host_ldflags_filter "$@")
 894 }
 895
 896 add_compat(){
 897     append compat_objs $1
 898     shift
 899     map 'add_cppflags -D$v' "$@"
 900 }
 901
 902 check_cmd(){
 903     log "$@"
 904     "$@" >> $logfile 2>&1
 905 }
 906
 907 check_stat(){
 908     log check_stat "$@"
 909     stat "$1" >> $logfile 2>&1
 910 }
 911
 912 cc_o(){
 913     eval printf '%s\\n' $CC_O
 914 }
 915
 916 cc_e(){
 917     eval printf '%s\\n' $CC_E
 918 }
 919
 920 check_cc(){
 921     log check_cc "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 925 }
 926
 927 check_cxx(){
 928     log check_cxx "$@"
 929     cat > $TMPCPP
 930     log_file $TMPCPP
 931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 932 }
 933
 934 check_objcc(){
 935     log check_objcc "$@"
 936     cat > $TMPM
 937     log_file $TMPM
 938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 939 }
 940
 941 check_cpp(){
 942     log check_cpp "$@"
 943     cat > $TMPC
 944     log_file $TMPC
 945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 946 }
 947
 948 as_o(){
 949     eval printf '%s\\n' $AS_O
 950 }
 951
 952 check_as(){
 953     log check_as "$@"
 954     cat > $TMPS
 955     log_file $TMPS
 956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 957 }
 958
 959 check_inline_asm(){
 960     log check_inline_asm "$@"
 961     name="$1"
 962     code="$2"
 963     shift 2
 964     disable $name
 965     check_cc "$@" <<EOF && enable $name
 966 void foo(void){ __asm__ volatile($code); }
 967 EOF
 968 }
 969
 970 check_inline_asm_flags(){
 971     log check_inline_asm_flags "$@"
 972     name="$1"
 973     code="$2"
 974     flags=''
 975     shift 2
 976     while [ "$1" != "" ]; do
 977       append flags $1
 978       shift
 979     done;
 980     disable $name
 981     cat > $TMPC <<EOF
 982 void foo(void){ __asm__ volatile($code); }
 983 EOF
 984     log_file $TMPC
 985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 987 }
 988
 989 check_insn(){
 990     log check_insn "$@"
 991     check_inline_asm ${1}_inline "\"$2\""
 992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 993 }
 994
 995 check_x86asm(){
 996     log check_x86asm "$@"
 997     echo "$1" > $TMPS
 998     log_file $TMPS
 999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 int x;
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     check_ld "cc" "$@" <<EOF
1084 int main(void){ return 0; }
1085 EOF
1086 }
1087
1088 check_ldflags(){
1089     log check_ldflags "$@"
1090     test_ldflags "$@" && add_ldflags "$@"
1091 }
1092
1093 test_stripflags(){
1094     log test_stripflags "$@"
1095     # call check_cc to get a fresh TMPO
1096     check_cc <<EOF
1097 int main(void) { return 0; }
1098 EOF
1099     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1100 }
1101
1102 check_stripflags(){
1103     log check_stripflags "$@"
1104     test_stripflags "$@" && add_stripflags "$@"
1105 }
1106
1107 check_header(){
1108     log check_header "$@"
1109     header=$1
1110     shift
1111     disable_safe $header
1112     check_cpp "$@" <<EOF && enable_safe $header
1113 #include <$header>
1114 int x;
1115 EOF
1116 }
1117
1118 check_header_objcc(){
1119     log check_header_objcc "$@"
1120     rm -f -- "$TMPO"
1121     header=$1
1122     shift
1123     disable_safe $header
1124     {
1125        echo "#include <$header>"
1126        echo "int main(void) { return 0; }"
1127     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1128 }
1129
1130 check_apple_framework(){
1131     log check_apple_framework "$@"
1132     framework="$1"
1133     name="$(tolower $framework)"
1134     header="${framework}/${framework}.h"
1135     disable $name
1136     check_header_objcc $header && enable $name && add_extralibs "-framework $framework"
1137 }
1138
1139 check_func(){
1140     log check_func "$@"
1141     func=$1
1142     shift
1143     disable $func
1144     check_ld "cc" "$@" <<EOF && enable $func
1145 extern int $func();
1146 int main(void){ $func(); }
1147 EOF
1148 }
1149
1150 check_complexfunc(){
1151     log check_complexfunc "$@"
1152     func=$1
1153     narg=$2
1154     shift 2
1155     test $narg = 2 && args="f, g" || args="f * I"
1156     disable $func
1157     check_ld "cc" "$@" <<EOF && enable $func
1158 #include <complex.h>
1159 #include <math.h>
1160 float foo(complex float f, complex float g) { return $func($args); }
1161 int main(void){ return (int) foo; }
1162 EOF
1163 }
1164
1165 check_mathfunc(){
1166     log check_mathfunc "$@"
1167     func=$1
1168     narg=$2
1169     shift 2
1170     test $narg = 2 && args="f, g" || args="f"
1171     disable $func
1172     check_ld "cc" "$@" <<EOF && enable $func
1173 #include <math.h>
1174 float foo(float f, float g) { return $func($args); }
1175 int main(void){ return (int) foo; }
1176 EOF
1177 }
1178
1179 check_func_headers(){
1180     log check_func_headers "$@"
1181     headers=$1
1182     funcs=$2
1183     shift 2
1184     {
1185         for hdr in $headers; do
1186             print_include $hdr
1187         done
1188         echo "#include <stdint.h>"
1189         for func in $funcs; do
1190             echo "long check_$func(void) { return (long) $func; }"
1191         done
1192         echo "int main(void) { int ret = 0;"
1193         # LTO could optimize out the test functions without this
1194         for func in $funcs; do
1195             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1196         done
1197         echo "return ret; }"
1198     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1199 }
1200
1201 check_class_headers_cpp(){
1202     log check_class_headers_cpp "$@"
1203     headers=$1
1204     classes=$2
1205     shift 2
1206     {
1207         for hdr in $headers; do
1208             echo "#include <$hdr>"
1209         done
1210         echo "int main(void) { "
1211         i=1
1212         for class in $classes; do
1213             echo "$class obj$i;"
1214             i=$(expr $i + 1)
1215         done
1216         echo "return 0; }"
1217     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1218 }
1219
1220 check_cpp_condition(){
1221     log check_cpp_condition "$@"
1222     header=$1
1223     condition=$2
1224     shift 2
1225     check_cpp "$@" <<EOF
1226 #include <$header>
1227 #if !($condition)
1228 #error "unsatisfied condition: $condition"
1229 #endif
1230 EOF
1231 }
1232
1233 test_cflags_cc(){
1234     log test_cflags_cc "$@"
1235     flags=$1
1236     header=$2
1237     condition=$3
1238     shift 3
1239     set -- $($cflags_filter "$flags")
1240     check_cc "$@" <<EOF
1241 #include <$header>
1242 #if !($condition)
1243 #error "unsatisfied condition: $condition"
1244 #endif
1245 EOF
1246 }
1247
1248 check_lib(){
1249     log check_lib "$@"
1250     name="$1"
1251     headers="$2"
1252     funcs="$3"
1253     shift 3
1254     disable $name
1255     check_func_headers "$headers" "$funcs" "$@" &&
1256         enable $name && add_extralibs "$@"
1257 }
1258
1259 check_lib_cpp(){
1260     log check_lib_cpp "$@"
1261     headers="$1"
1262     classes="$2"
1263     shift 2
1264     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1265 }
1266
1267 check_pkg_config(){
1268     log check_pkg_config "$@"
1269     pkg_version="$1"
1270     pkg="${1%% *}"
1271     headers="$2"
1272     funcs="$3"
1273     shift 3
1274     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1275     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1276     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1277     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1278         set_safe "${pkg}_cflags"    $pkg_cflags &&
1279         set_safe "${pkg}_extralibs" $pkg_libs
1280 }
1281
1282 check_exec(){
1283     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1284 }
1285
1286 check_exec_crash(){
1287     log check_exec_crash "$@"
1288     code=$(cat)
1289
1290     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1291     # are safe but may not be available everywhere.  Thus we use
1292     # raise(SIGTERM) instead.  The check is run in a subshell so we
1293     # can redirect the "Terminated" message from the shell.  SIGBUS
1294     # is not defined by standard C so it is used conditionally.
1295
1296     (check_exec "$@") >> $logfile 2>&1 <<EOF
1297 #include <signal.h>
1298 static void sighandler(int sig){
1299     raise(SIGTERM);
1300 }
1301 int foo(void){
1302     $code
1303 }
1304 int (*func_ptr)(void) = foo;
1305 int main(void){
1306     signal(SIGILL, sighandler);
1307     signal(SIGFPE, sighandler);
1308     signal(SIGSEGV, sighandler);
1309 #ifdef SIGBUS
1310     signal(SIGBUS, sighandler);
1311 #endif
1312     return func_ptr();
1313 }
1314 EOF
1315 }
1316
1317 check_type(){
1318     log check_type "$@"
1319     headers=$1
1320     type=$2
1321     shift 2
1322     disable_safe "$type"
1323     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1324 }
1325
1326 check_struct(){
1327     log check_struct "$@"
1328     headers=$1
1329     struct=$2
1330     member=$3
1331     shift 3
1332     disable_safe "${struct}_${member}"
1333     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1334         enable_safe "${struct}_${member}"
1335 }
1336
1337 check_builtin(){
1338     log check_builtin "$@"
1339     name=$1
1340     headers=$2
1341     builtin=$3
1342     shift 3
1343     disable "$name"
1344     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1345 }
1346
1347 check_compile_assert(){
1348     log check_compile_assert "$@"
1349     name=$1
1350     headers=$2
1351     condition=$3
1352     shift 3
1353     disable "$name"
1354     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1355 }
1356
1357 require(){
1358     log require "$@"
1359     name_version="$1"
1360     name="${1%% *}"
1361     headers="$2"
1362     func="$3"
1363     shift 3
1364     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1365 }
1366
1367 require_cpp(){
1368     name="$1"
1369     headers="$2"
1370     classes="$3"
1371     shift 3
1372     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1373 }
1374
1375 require_header(){
1376     log require "$@"
1377     header="$1"
1378     shift
1379     check_header "$header" "$@" || die "ERROR: $header header not found"
1380 }
1381
1382 require_cpp_condition(){
1383     log require "$@"
1384     header="$1"
1385     condition="$2"
1386     shift 2
1387     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1388 }
1389
1390 use_pkg_config(){
1391     log use_pkg_config "$@"
1392     pkg="$1"
1393     check_pkg_config "$@" || return 1
1394     add_cflags    $(get_safe "${pkg}_cflags")
1395     add_extralibs $(get_safe "${pkg}_extralibs")
1396 }
1397
1398 require_pkg_config(){
1399     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1400 }
1401
1402 hostcc_e(){
1403     eval printf '%s\\n' $HOSTCC_E
1404 }
1405
1406 hostcc_o(){
1407     eval printf '%s\\n' $HOSTCC_O
1408 }
1409
1410 check_host_cc(){
1411     log check_host_cc "$@"
1412     cat > $TMPC
1413     log_file $TMPC
1414     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1415 }
1416
1417 check_host_cpp(){
1418     log check_host_cpp "$@"
1419     cat > $TMPC
1420     log_file $TMPC
1421     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1422 }
1423
1424 check_host_cppflags(){
1425     log check_host_cppflags "$@"
1426     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1427 int x;
1428 EOF
1429 }
1430
1431 check_host_cflags(){
1432     log check_host_cflags "$@"
1433     set -- $($host_cflags_filter "$@")
1434     check_host_cc "$@" <<EOF && append host_cflags "$@"
1435 int x;
1436 EOF
1437 }
1438
1439 check_host_cpp_condition(){
1440     log check_host_cpp_condition "$@"
1441     header=$1
1442     condition=$2
1443     shift 2
1444     check_host_cpp "$@" <<EOF
1445 #include <$header>
1446 #if !($condition)
1447 #error "unsatisfied condition: $condition"
1448 #endif
1449 EOF
1450 }
1451
1452 cp_if_changed(){
1453     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1454     mkdir -p "$(dirname $2)"
1455     cp -f "$1" "$2"
1456 }
1457
1458 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1459 # system-dependent things.
1460
1461 AVCODEC_COMPONENTS="
1462     bsfs
1463     decoders
1464     encoders
1465     hwaccels
1466     parsers
1467 "
1468
1469 AVDEVICE_COMPONENTS="
1470     indevs
1471     outdevs
1472 "
1473
1474 AVFILTER_COMPONENTS="
1475     filters
1476 "
1477
1478 AVFORMAT_COMPONENTS="
1479     demuxers
1480     muxers
1481     protocols
1482 "
1483
1484 AVRESAMPLE_COMPONENTS=""
1485
1486 AVUTIL_COMPONENTS=""
1487
1488 COMPONENT_LIST="
1489     $AVCODEC_COMPONENTS
1490     $AVDEVICE_COMPONENTS
1491     $AVFILTER_COMPONENTS
1492     $AVFORMAT_COMPONENTS
1493     $AVRESAMPLE_COMPONENTS
1494     $AVUTIL_COMPONENTS
1495 "
1496
1497 EXAMPLE_LIST="
1498     avio_dir_cmd_example
1499     avio_reading_example
1500     decode_audio_example
1501     decode_video_example
1502     demuxing_decoding_example
1503     encode_audio_example
1504     encode_video_example
1505     extract_mvs_example
1506     filter_audio_example
1507     filtering_audio_example
1508     filtering_video_example
1509     http_multiclient_example
1510     hw_decode_example
1511     metadata_example
1512     muxing_example
1513     qsvdec_example
1514     remuxing_example
1515     resampling_audio_example
1516     scaling_video_example
1517     transcode_aac_example
1518     transcoding_example
1519 "
1520
1521 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1522     alsa
1523     appkit
1524     avfoundation
1525     bzlib
1526     coreimage
1527     iconv
1528     jack
1529     libxcb
1530     libxcb_shm
1531     libxcb_shape
1532     libxcb_xfixes
1533     lzma
1534     schannel
1535     sdl2
1536     securetransport
1537     sndio
1538     xlib
1539     zlib
1540 "
1541
1542 EXTERNAL_LIBRARY_GPL_LIST="
1543     avisynth
1544     frei0r
1545     libcdio
1546     librubberband
1547     libvidstab
1548     libx264
1549     libx265
1550     libxavs
1551     libxvid
1552 "
1553
1554 EXTERNAL_LIBRARY_NONFREE_LIST="
1555     decklink
1556     libndi_newtek
1557     libfdk_aac
1558     openssl
1559 "
1560
1561 EXTERNAL_LIBRARY_VERSION3_LIST="
1562     gmp
1563     libopencore_amrnb
1564     libopencore_amrwb
1565     libvo_amrwbenc
1566 "
1567
1568 EXTERNAL_LIBRARY_GPLV3_LIST="
1569     libsmbclient
1570 "
1571
1572 EXTERNAL_LIBRARY_LIST="
1573     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1574     $EXTERNAL_LIBRARY_GPL_LIST
1575     $EXTERNAL_LIBRARY_NONFREE_LIST
1576     $EXTERNAL_LIBRARY_VERSION3_LIST
1577     $EXTERNAL_LIBRARY_GPLV3_LIST
1578     chromaprint
1579     gcrypt
1580     gnutls
1581     jni
1582     ladspa
1583     libass
1584     libbluray
1585     libbs2b
1586     libcaca
1587     libcelt
1588     libdc1394
1589     libdrm
1590     libflite
1591     libfontconfig
1592     libfreetype
1593     libfribidi
1594     libgme
1595     libgsm
1596     libiec61883
1597     libilbc
1598     libkvazaar
1599     libmodplug
1600     libmp3lame
1601     libmysofa
1602     libopencv
1603     libopenh264
1604     libopenjpeg
1605     libopenmpt
1606     libopus
1607     libpulse
1608     librsvg
1609     librtmp
1610     libshine
1611     libsmbclient
1612     libsnappy
1613     libsoxr
1614     libspeex
1615     libssh
1616     libtesseract
1617     libtheora
1618     libtwolame
1619     libv4l2
1620     libvmaf
1621     libvorbis
1622     libvpx
1623     libwavpack
1624     libwebp
1625     libxml2
1626     libzimg
1627     libzmq
1628     libzvbi
1629     mediacodec
1630     openal
1631     opencl
1632     opengl
1633 "
1634
1635 HWACCEL_AUTODETECT_LIBRARY_LIST="
1636     audiotoolbox
1637     crystalhd
1638     cuda
1639     cuvid
1640     d3d11va
1641     dxva2
1642     nvenc
1643     vaapi
1644     vda
1645     vdpau
1646     videotoolbox
1647     v4l2_m2m
1648     xvmc
1649 "
1650
1651 HWACCEL_LIBRARY_NONFREE_LIST="
1652     cuda_sdk
1653     libnpp
1654 "
1655
1656 HWACCEL_LIBRARY_LIST="
1657     $HWACCEL_AUTODETECT_LIBRARY_LIST
1658     $HWACCEL_LIBRARY_NONFREE_LIST
1659     libmfx
1660     mmal
1661     omx
1662 "
1663
1664 DOCUMENT_LIST="
1665     doc
1666     htmlpages
1667     manpages
1668     podpages
1669     txtpages
1670 "
1671
1672 FEATURE_LIST="
1673     ftrapv
1674     gray
1675     hardcoded_tables
1676     omx_rpi
1677     runtime_cpudetect
1678     safe_bitstream_reader
1679     shared
1680     small
1681     static
1682     swscale_alpha
1683 "
1684
1685 LIBRARY_LIST="
1686     avcodec
1687     avdevice
1688     avfilter
1689     avformat
1690     avresample
1691     avutil
1692     postproc
1693     swresample
1694     swscale
1695 "
1696
1697 LICENSE_LIST="
1698     gpl
1699     nonfree
1700     version3
1701 "
1702
1703 PROGRAM_LIST="
1704     ffplay
1705     ffprobe
1706     ffserver
1707     ffmpeg
1708 "
1709
1710 SUBSYSTEM_LIST="
1711     dct
1712     dwt
1713     error_resilience
1714     faan
1715     fast_unaligned
1716     fft
1717     lsp
1718     lzo
1719     mdct
1720     pixelutils
1721     network
1722     rdft
1723 "
1724
1725 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1726 CONFIG_LIST="
1727     $DOCUMENT_LIST
1728     $EXAMPLE_LIST
1729     $EXTERNAL_LIBRARY_LIST
1730     $HWACCEL_LIBRARY_LIST
1731     $FEATURE_LIST
1732     $LICENSE_LIST
1733     $LIBRARY_LIST
1734     $PROGRAM_LIST
1735     $SUBSYSTEM_LIST
1736     autodetect
1737     fontconfig
1738     linux_perf
1739     memory_poisoning
1740     neon_clobber_test
1741     ossfuzz
1742     pic
1743     thumb
1744     valgrind_backtrace
1745     xmm_clobber_test
1746     $COMPONENT_LIST
1747 "
1748
1749 THREADS_LIST="
1750     pthreads
1751     os2threads
1752     w32threads
1753 "
1754
1755 ATOMICS_LIST="
1756     atomics_gcc
1757     atomics_suncc
1758     atomics_win32
1759 "
1760
1761 AUTODETECT_LIBS="
1762     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1763     $HWACCEL_AUTODETECT_LIBRARY_LIST
1764     $THREADS_LIST
1765 "
1766
1767 ARCH_LIST="
1768     aarch64
1769     alpha
1770     arm
1771     avr32
1772     avr32_ap
1773     avr32_uc
1774     bfin
1775     ia64
1776     m68k
1777     mips
1778     mips64
1779     parisc
1780     ppc
1781     ppc64
1782     s390
1783     sh4
1784     sparc
1785     sparc64
1786     tilegx
1787     tilepro
1788     tomi
1789     x86
1790     x86_32
1791     x86_64
1792 "
1793
1794 ARCH_EXT_LIST_ARM="
1795     armv5te
1796     armv6
1797     armv6t2
1798     armv8
1799     neon
1800     vfp
1801     vfpv3
1802     setend
1803 "
1804
1805 ARCH_EXT_LIST_MIPS="
1806     mipsfpu
1807     mips32r2
1808     mips32r5
1809     mips64r2
1810     mips32r6
1811     mips64r6
1812     mipsdsp
1813     mipsdspr2
1814     msa
1815 "
1816
1817 ARCH_EXT_LIST_LOONGSON="
1818     loongson2
1819     loongson3
1820     mmi
1821 "
1822
1823 ARCH_EXT_LIST_X86_SIMD="
1824     aesni
1825     amd3dnow
1826     amd3dnowext
1827     avx
1828     avx2
1829     fma3
1830     fma4
1831     mmx
1832     mmxext
1833     sse
1834     sse2
1835     sse3
1836     sse4
1837     sse42
1838     ssse3
1839     xop
1840 "
1841
1842 ARCH_EXT_LIST_PPC="
1843     altivec
1844     dcbzl
1845     ldbrx
1846     power8
1847     ppc4xx
1848     vsx
1849 "
1850
1851 ARCH_EXT_LIST_X86="
1852     $ARCH_EXT_LIST_X86_SIMD
1853     cpunop
1854     i686
1855 "
1856
1857 ARCH_EXT_LIST="
1858     $ARCH_EXT_LIST_ARM
1859     $ARCH_EXT_LIST_PPC
1860     $ARCH_EXT_LIST_X86
1861     $ARCH_EXT_LIST_MIPS
1862     $ARCH_EXT_LIST_LOONGSON
1863 "
1864
1865 ARCH_FEATURES="
1866     aligned_stack
1867     fast_64bit
1868     fast_clz
1869     fast_cmov
1870     local_aligned_8
1871     local_aligned_16
1872     local_aligned_32
1873     simd_align_16
1874     simd_align_32
1875 "
1876
1877 BUILTIN_LIST="
1878     atomic_cas_ptr
1879     machine_rw_barrier
1880     MemoryBarrier
1881     mm_empty
1882     rdtsc
1883     sarestart
1884     sem_timedwait
1885     sync_val_compare_and_swap
1886 "
1887 HAVE_LIST_CMDLINE="
1888     inline_asm
1889     symver
1890     x86asm
1891 "
1892
1893 HAVE_LIST_PUB="
1894     bigendian
1895     fast_unaligned
1896 "
1897
1898 HEADERS_LIST="
1899     altivec_h
1900     arpa_inet_h
1901     asm_types_h
1902     cdio_paranoia_h
1903     cdio_paranoia_paranoia_h
1904     cuda_h
1905     d3d11_h
1906     dispatch_dispatch_h
1907     dev_bktr_ioctl_bt848_h
1908     dev_bktr_ioctl_meteor_h
1909     dev_ic_bt8xx_h
1910     dev_video_bktr_ioctl_bt848_h
1911     dev_video_meteor_ioctl_meteor_h
1912     direct_h
1913     dirent_h
1914     dlfcn_h
1915     dxgidebug_h
1916     dxva_h
1917     ES2_gl_h
1918     gsm_h
1919     io_h
1920     mach_mach_time_h
1921     machine_ioctl_bt848_h
1922     machine_ioctl_meteor_h
1923     malloc_h
1924     opencv2_core_core_c_h
1925     openjpeg_2_2_openjpeg_h
1926     openjpeg_2_1_openjpeg_h
1927     openjpeg_2_0_openjpeg_h
1928     openjpeg_1_5_openjpeg_h
1929     OpenGL_gl3_h
1930     poll_h
1931     soundcard_h
1932     stdatomic_h
1933     sys_mman_h
1934     sys_param_h
1935     sys_resource_h
1936     sys_select_h
1937     sys_soundcard_h
1938     sys_time_h
1939     sys_un_h
1940     sys_videoio_h
1941     termios_h
1942     udplite_h
1943     unistd_h
1944     valgrind_valgrind_h
1945     windows_h
1946     winsock2_h
1947 "
1948
1949 INTRINSICS_LIST="
1950     intrinsics_neon
1951 "
1952
1953 COMPLEX_FUNCS="
1954     cabs
1955     cexp
1956 "
1957
1958 MATH_FUNCS="
1959     atanf
1960     atan2f
1961     cbrt
1962     cbrtf
1963     copysign
1964     cosf
1965     erf
1966     exp2
1967     exp2f
1968     expf
1969     hypot
1970     isfinite
1971     isinf
1972     isnan
1973     ldexpf
1974     llrint
1975     llrintf
1976     log2
1977     log2f
1978     log10f
1979     lrint
1980     lrintf
1981     powf
1982     rint
1983     round
1984     roundf
1985     sinf
1986     trunc
1987     truncf
1988 "
1989
1990 SYSTEM_FUNCS="
1991     access
1992     aligned_malloc
1993     arc4random
1994     clock_gettime
1995     closesocket
1996     CommandLineToArgvW
1997     CoTaskMemFree
1998     CryptGenRandom
1999     dlopen
2000     fcntl
2001     flt_lim
2002     fork
2003     getaddrinfo
2004     gethrtime
2005     getopt
2006     GetProcessAffinityMask
2007     GetProcessMemoryInfo
2008     GetProcessTimes
2009     getrusage
2010     GetSystemTimeAsFileTime
2011     gettimeofday
2012     glob
2013     glXGetProcAddress
2014     gmtime_r
2015     inet_aton
2016     isatty
2017     jack_port_get_latency_range
2018     kbhit
2019     LoadLibrary
2020     localtime_r
2021     lstat
2022     lzo1x_999_compress
2023     mach_absolute_time
2024     MapViewOfFile
2025     memalign
2026     mkstemp
2027     mmap
2028     mprotect
2029     nanosleep
2030     PeekNamedPipe
2031     posix_memalign
2032     pthread_cancel
2033     sched_getaffinity
2034     SetConsoleTextAttribute
2035     SetConsoleCtrlHandler
2036     setmode
2037     setrlimit
2038     Sleep
2039     strerror_r
2040     sysconf
2041     sysctl
2042     usleep
2043     UTGetOSTypeFromString
2044     VirtualAlloc
2045     wglGetProcAddress
2046 "
2047
2048 TOOLCHAIN_FEATURES="
2049     as_dn_directive
2050     as_fpu_directive
2051     as_func
2052     as_object_arch
2053     asm_mod_q
2054     attribute_may_alias
2055     attribute_packed
2056     blocks_extension
2057     ebp_available
2058     ebx_available
2059     gnu_as
2060     gnu_windres
2061     ibm_asm
2062     inline_asm_direct_symbol_refs
2063     inline_asm_labels
2064     inline_asm_nonlocal_labels
2065     pragma_deprecated
2066     rsync_contimeout
2067     symver_asm_label
2068     symver_gnu_asm
2069     vfp_args
2070     xform_asm
2071     xmm_clobbers
2072 "
2073
2074 TYPES_LIST="
2075     CONDITION_VARIABLE_Ptr
2076     socklen_t
2077     struct_addrinfo
2078     struct_group_source_req
2079     struct_ip_mreq_source
2080     struct_ipv6_mreq
2081     struct_msghdr_msg_flags
2082     struct_pollfd
2083     struct_rusage_ru_maxrss
2084     struct_sctp_event_subscribe
2085     struct_sockaddr_in6
2086     struct_sockaddr_sa_len
2087     struct_sockaddr_storage
2088     struct_stat_st_mtim_tv_nsec
2089     struct_v4l2_frmivalenum_discrete
2090 "
2091
2092 HAVE_LIST="
2093     $ARCH_EXT_LIST
2094     $(add_suffix _external $ARCH_EXT_LIST)
2095     $(add_suffix _inline   $ARCH_EXT_LIST)
2096     $ARCH_FEATURES
2097     $ATOMICS_LIST
2098     $BUILTIN_LIST
2099     $COMPLEX_FUNCS
2100     $HAVE_LIST_CMDLINE
2101     $HAVE_LIST_PUB
2102     $HEADERS_LIST
2103     $INTRINSICS_LIST
2104     $MATH_FUNCS
2105     $SYSTEM_FUNCS
2106     $THREADS_LIST
2107     $TOOLCHAIN_FEATURES
2108     $TYPES_LIST
2109     atomics_native
2110     dos_paths
2111     libc_msvcrt
2112     makeinfo
2113     makeinfo_html
2114     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2115     perl
2116     pod2man
2117     section_data_rel_ro
2118     texi2html
2119     threads
2120     uwp
2121     vaapi_drm
2122     vaapi_x11
2123     vdpau_x11
2124     winrt
2125 "
2126
2127 # options emitted with CONFIG_ prefix but not available on the command line
2128 CONFIG_EXTRA="
2129     aandcttables
2130     ac3dsp
2131     audio_frame_queue
2132     audiodsp
2133     blockdsp
2134     bswapdsp
2135     cabac
2136     dirac_parse
2137     dvprofile
2138     exif
2139     faandct
2140     faanidct
2141     fdctdsp
2142     flacdsp
2143     fmtconvert
2144     frame_thread_encoder
2145     g722dsp
2146     golomb
2147     gplv3
2148     h263dsp
2149     h264chroma
2150     h264dsp
2151     h264parse
2152     h264pred
2153     h264qpel
2154     hevcparse
2155     hpeldsp
2156     huffman
2157     huffyuvdsp
2158     huffyuvencdsp
2159     idctdsp
2160     iirfilter
2161     mdct15
2162     intrax8
2163     iso_media
2164     ividsp
2165     jpegtables
2166     lgplv3
2167     libx262
2168     llauddsp
2169     llviddsp
2170     llvidencdsp
2171     lpc
2172     lzf
2173     me_cmp
2174     mpeg_er
2175     mpegaudio
2176     mpegaudiodsp
2177     mpegaudioheader
2178     mpegvideo
2179     mpegvideoenc
2180     mss34dsp
2181     pixblockdsp
2182     qpeldsp
2183     qsv
2184     qsvdec
2185     qsvenc
2186     rangecoder
2187     riffdec
2188     riffenc
2189     rtpdec
2190     rtpenc_chain
2191     rv34dsp
2192     sinewin
2193     snappy
2194     srtp
2195     startcode
2196     texturedsp
2197     texturedspenc
2198     tpeldsp
2199     vaapi_encode
2200     vc1dsp
2201     videodsp
2202     vp3dsp
2203     vp56dsp
2204     vp8dsp
2205     wma_freqs
2206     wmv2dsp
2207 "
2208
2209 CMDLINE_SELECT="
2210     $ARCH_EXT_LIST
2211     $CONFIG_LIST
2212     $HAVE_LIST_CMDLINE
2213     $THREADS_LIST
2214     asm
2215     cross_compile
2216     debug
2217     extra_warnings
2218     logging
2219     lto
2220     optimizations
2221     rpath
2222     stripping
2223 "
2224
2225 PATHS_LIST="
2226     bindir
2227     datadir
2228     docdir
2229     incdir
2230     libdir
2231     mandir
2232     pkgconfigdir
2233     prefix
2234     shlibdir
2235     install_name_dir
2236 "
2237
2238 CMDLINE_SET="
2239     $PATHS_LIST
2240     ar
2241     arch
2242     as
2243     assert_level
2244     build_suffix
2245     cc
2246     objcc
2247     cpu
2248     cross_prefix
2249     custom_allocator
2250     cxx
2251     dep_cc
2252     doxygen
2253     env
2254     extra_version
2255     gas
2256     host_cc
2257     host_cflags
2258     host_extralibs
2259     host_ld
2260     host_ldflags
2261     host_os
2262     ignore_tests
2263     install
2264     ld
2265     ln_s
2266     logfile
2267     malloc_prefix
2268     nm
2269     optflags
2270     nvccflags
2271     pkg_config
2272     pkg_config_flags
2273     progs_suffix
2274     random_seed
2275     ranlib
2276     samples
2277     strip
2278     sws_max_filter_size
2279     sysinclude
2280     sysroot
2281     target_exec
2282     target_os
2283     target_path
2284     target_samples
2285     tempprefix
2286     toolchain
2287     valgrind
2288     x86asmexe
2289 "
2290
2291 CMDLINE_APPEND="
2292     extra_cflags
2293     extra_cxxflags
2294     extra_objcflags
2295     host_cppflags
2296 "
2297
2298 # code dependency declarations
2299
2300 # architecture extensions
2301
2302 armv5te_deps="arm"
2303 armv6_deps="arm"
2304 armv6t2_deps="arm"
2305 armv8_deps="aarch64"
2306 neon_deps_any="aarch64 arm"
2307 intrinsics_neon_deps="neon"
2308 vfp_deps_any="aarch64 arm"
2309 vfpv3_deps="vfp"
2310 setend_deps="arm"
2311
2312 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2313
2314 loongson2_deps="mips"
2315 loongson3_deps="mips"
2316 mipsfpu_deps="mips"
2317 mipsdsp_deps="mips"
2318 mipsdspr2_deps="mips"
2319 mips32r2_deps="mips"
2320 mips32r5_deps="mips"
2321 mips32r6_deps="mips"
2322 mips64r2_deps="mips"
2323 mips64r6_deps="mips"
2324 msa_deps="mipsfpu"
2325 mmi_deps="mips"
2326
2327 altivec_deps="ppc"
2328 dcbzl_deps="ppc"
2329 ldbrx_deps="ppc"
2330 ppc4xx_deps="ppc"
2331 vsx_deps="altivec"
2332 power8_deps="vsx"
2333
2334 cpunop_deps="i686"
2335 x86_64_select="i686"
2336 x86_64_suggest="fast_cmov"
2337
2338 amd3dnow_deps="mmx"
2339 amd3dnowext_deps="amd3dnow"
2340 i686_deps="x86"
2341 mmx_deps="x86"
2342 mmxext_deps="mmx"
2343 sse_deps="mmxext"
2344 sse2_deps="sse"
2345 sse3_deps="sse2"
2346 ssse3_deps="sse3"
2347 sse4_deps="ssse3"
2348 sse42_deps="sse4"
2349 aesni_deps="sse42"
2350 avx_deps="sse42"
2351 xop_deps="avx"
2352 fma3_deps="avx"
2353 fma4_deps="avx"
2354 avx2_deps="avx"
2355
2356 mmx_external_deps="x86asm"
2357 mmx_inline_deps="inline_asm"
2358 mmx_suggest="mmx_external mmx_inline"
2359
2360 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2361     eval dep=\$${ext}_deps
2362     eval ${ext}_external_deps='"${dep}_external"'
2363     eval ${ext}_inline_deps='"${dep}_inline"'
2364     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2365 done
2366
2367 aligned_stack_if_any="aarch64 ppc x86"
2368 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2369 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2370 fast_unaligned_if_any="aarch64 ppc x86"
2371 simd_align_16_if_any="altivec neon sse"
2372 simd_align_32_if_any="avx"
2373
2374 # system capabilities
2375 symver_if_any="symver_asm_label symver_gnu_asm"
2376 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2377
2378 # threading support
2379 atomics_gcc_if="sync_val_compare_and_swap"
2380 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2381 atomics_win32_if="MemoryBarrier"
2382 atomics_native_if_any="$ATOMICS_LIST"
2383 w32threads_deps="atomics_native"
2384 threads_if_any="$THREADS_LIST"
2385
2386 # subsystems
2387 dct_select="rdft"
2388 dirac_parse_select="golomb"
2389 error_resilience_select="me_cmp"
2390 faandct_deps="faan fdctdsp"
2391 faanidct_deps="faan idctdsp"
2392 h264dsp_select="startcode"
2393 hevcparse_select="golomb"
2394 frame_thread_encoder_deps="encoders threads"
2395 intrax8_select="blockdsp idctdsp"
2396 mdct_select="fft"
2397 mdct15_select="fft"
2398 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2399 mpeg_er_select="error_resilience"
2400 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2401 mpegaudiodsp_select="dct"
2402 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2403 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2404 vc1dsp_select="h264chroma qpeldsp startcode"
2405 rdft_select="fft"
2406
2407 # decoders / encoders
2408 aac_decoder_select="mdct15 mdct sinewin"
2409 aac_fixed_decoder_select="mdct sinewin"
2410 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2411 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2412 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2413 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2414 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2415 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2416 adpcm_g722_decoder_select="g722dsp"
2417 adpcm_g722_encoder_select="g722dsp"
2418 aic_decoder_select="golomb idctdsp"
2419 alac_encoder_select="lpc"
2420 als_decoder_select="bswapdsp"
2421 amrnb_decoder_select="lsp"
2422 amrwb_decoder_select="lsp"
2423 amv_decoder_select="sp5x_decoder exif"
2424 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2425 ape_decoder_select="bswapdsp llauddsp"
2426 apng_decoder_select="zlib"
2427 apng_encoder_select="llvidencdsp zlib"
2428 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2429 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2430 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2431 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2432 atrac1_decoder_select="mdct sinewin"
2433 atrac3_decoder_select="mdct"
2434 atrac3p_decoder_select="mdct sinewin"
2435 avrn_decoder_select="exif jpegtables"
2436 bink_decoder_select="blockdsp hpeldsp"
2437 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2438 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2439 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2440 clearvideo_decoder_select="idctdsp"
2441 cllc_decoder_select="bswapdsp"
2442 comfortnoise_encoder_select="lpc"
2443 cook_decoder_select="audiodsp mdct sinewin"
2444 cscd_decoder_select="lzo"
2445 cscd_decoder_suggest="zlib"
2446 dca_decoder_select="mdct"
2447 dds_decoder_select="texturedsp"
2448 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2449 dnxhd_decoder_select="blockdsp idctdsp"
2450 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2451 dolby_e_decoder_select="mdct"
2452 dvvideo_decoder_select="dvprofile idctdsp"
2453 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2454 dxa_decoder_select="zlib"
2455 dxv_decoder_select="lzf texturedsp"
2456 eac3_decoder_select="ac3_decoder"
2457 eac3_encoder_select="ac3_encoder"
2458 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2459 eatgq_decoder_select="aandcttables"
2460 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2461 exr_decoder_select="zlib"
2462 ffv1_decoder_select="rangecoder"
2463 ffv1_encoder_select="rangecoder"
2464 ffvhuff_decoder_select="huffyuv_decoder"
2465 ffvhuff_encoder_select="huffyuv_encoder"
2466 fic_decoder_select="golomb"
2467 flac_decoder_select="flacdsp"
2468 flac_encoder_select="bswapdsp flacdsp lpc"
2469 flashsv2_decoder_select="zlib"
2470 flashsv2_encoder_select="zlib"
2471 flashsv_decoder_select="zlib"
2472 flashsv_encoder_select="zlib"
2473 flv_decoder_select="h263_decoder"
2474 flv_encoder_select="h263_encoder"
2475 fourxm_decoder_select="blockdsp bswapdsp"
2476 fraps_decoder_select="bswapdsp huffman"
2477 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2478 g729_decoder_select="audiodsp"
2479 h261_decoder_select="mpegvideo"
2480 h261_encoder_select="aandcttables mpegvideoenc"
2481 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2482 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2483 h263i_decoder_select="h263_decoder"
2484 h263p_decoder_select="h263_decoder"
2485 h263p_encoder_select="h263_encoder"
2486 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2487 h264_decoder_suggest="error_resilience"
2488 hap_decoder_select="snappy texturedsp"
2489 hap_encoder_deps="libsnappy"
2490 hap_encoder_select="texturedspenc"
2491 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2492 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2493 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2494 iac_decoder_select="imc_decoder"
2495 imc_decoder_select="bswapdsp fft mdct sinewin"
2496 indeo3_decoder_select="hpeldsp"
2497 indeo4_decoder_select="ividsp"
2498 indeo5_decoder_select="ividsp"
2499 interplay_video_decoder_select="hpeldsp"
2500 jpegls_decoder_select="mjpeg_decoder"
2501 jv_decoder_select="blockdsp"
2502 lagarith_decoder_select="llviddsp"
2503 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2504 magicyuv_decoder_select="llviddsp"
2505 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2506 metasound_decoder_select="lsp mdct sinewin"
2507 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2508 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2509 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2510 mjpegb_decoder_select="mjpeg_decoder"
2511 mlp_decoder_select="mlp_parser"
2512 mlp_encoder_select="lpc"
2513 motionpixels_decoder_select="bswapdsp"
2514 mp1_decoder_select="mpegaudio"
2515 mp1float_decoder_select="mpegaudio"
2516 mp2_decoder_select="mpegaudio"
2517 mp2float_decoder_select="mpegaudio"
2518 mp3_decoder_select="mpegaudio"
2519 mp3adu_decoder_select="mpegaudio"
2520 mp3adufloat_decoder_select="mpegaudio"
2521 mp3float_decoder_select="mpegaudio"
2522 mp3on4_decoder_select="mpegaudio"
2523 mp3on4float_decoder_select="mpegaudio"
2524 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2525 mpc8_decoder_select="mpegaudiodsp"
2526 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2527 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2528 mpegvideo_decoder_select="mpegvideo"
2529 mpeg1video_decoder_select="mpegvideo"
2530 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2531 mpeg2video_decoder_select="mpegvideo"
2532 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2533 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2534 mpeg4_encoder_select="h263_encoder"
2535 msa1_decoder_select="mss34dsp"
2536 mscc_decoder_select="zlib"
2537 msmpeg4v1_decoder_select="h263_decoder"
2538 msmpeg4v2_decoder_select="h263_decoder"
2539 msmpeg4v2_encoder_select="h263_encoder"
2540 msmpeg4v3_decoder_select="h263_decoder"
2541 msmpeg4v3_encoder_select="h263_encoder"
2542 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2543 mts2_decoder_select="mss34dsp"
2544 mxpeg_decoder_select="mjpeg_decoder"
2545 nellymoser_decoder_select="mdct sinewin"
2546 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2547 nuv_decoder_select="idctdsp lzo"
2548 on2avc_decoder_select="mdct"
2549 opus_decoder_deps="swresample"
2550 opus_decoder_select="mdct15"
2551 opus_encoder_select="audio_frame_queue mdct15"
2552 png_decoder_select="zlib"
2553 png_encoder_select="llvidencdsp zlib"
2554 prores_decoder_select="blockdsp idctdsp"
2555 prores_encoder_select="fdctdsp"
2556 qcelp_decoder_select="lsp"
2557 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2558 ra_144_decoder_select="audiodsp"
2559 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2560 ralf_decoder_select="golomb"
2561 rawvideo_decoder_select="bswapdsp"
2562 rscc_decoder_select="zlib"
2563 rtjpeg_decoder_select="me_cmp"
2564 rv10_decoder_select="h263_decoder"
2565 rv10_encoder_select="h263_encoder"
2566 rv20_decoder_select="h263_decoder"
2567 rv20_encoder_select="h263_encoder"
2568 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2569 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2570 screenpresso_decoder_select="zlib"
2571 shorten_decoder_select="bswapdsp"
2572 sipr_decoder_select="lsp"
2573 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2574 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2575 sonic_decoder_select="golomb rangecoder"
2576 sonic_encoder_select="golomb rangecoder"
2577 sonic_ls_encoder_select="golomb rangecoder"
2578 sp5x_decoder_select="mjpeg_decoder"
2579 srgc_decoder_select="zlib"
2580 svq1_decoder_select="hpeldsp"
2581 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2582 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2583 svq3_decoder_suggest="zlib"
2584 tak_decoder_select="audiodsp"
2585 tdsc_decoder_select="zlib mjpeg_decoder"
2586 theora_decoder_select="vp3_decoder"
2587 thp_decoder_select="mjpeg_decoder"
2588 tiff_decoder_suggest="zlib lzma"
2589 tiff_encoder_suggest="zlib"
2590 truehd_decoder_select="mlp_parser"
2591 truehd_encoder_select="lpc"
2592 truemotion2_decoder_select="bswapdsp"
2593 truespeech_decoder_select="bswapdsp"
2594 tscc_decoder_select="zlib"
2595 twinvq_decoder_select="mdct lsp sinewin"
2596 txd_decoder_select="texturedsp"
2597 utvideo_decoder_select="bswapdsp llviddsp"
2598 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2599 vble_decoder_select="llviddsp"
2600 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2601 vc1_qsv_decoder_deps="libmfx"
2602 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2603 vc1image_decoder_select="vc1_decoder"
2604 vorbis_decoder_select="mdct"
2605 vorbis_encoder_select="mdct"
2606 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2607 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2608 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2609 vp6a_decoder_select="vp6_decoder"
2610 vp6f_decoder_select="vp6_decoder"
2611 vp7_decoder_select="h264pred videodsp vp8dsp"
2612 vp8_decoder_select="h264pred videodsp vp8dsp"
2613 vp9_decoder_select="videodsp vp9_parser"
2614 webp_decoder_select="vp8_decoder exif"
2615 wmalossless_decoder_select="llauddsp"
2616 wmapro_decoder_select="mdct sinewin wma_freqs"
2617 wmav1_decoder_select="mdct sinewin wma_freqs"
2618 wmav1_encoder_select="mdct sinewin wma_freqs"
2619 wmav2_decoder_select="mdct sinewin wma_freqs"
2620 wmav2_encoder_select="mdct sinewin wma_freqs"
2621 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2622 wmv1_decoder_select="h263_decoder"
2623 wmv1_encoder_select="h263_encoder"
2624 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2625 wmv2_encoder_select="h263_encoder wmv2dsp"
2626 wmv3_decoder_select="vc1_decoder"
2627 wmv3image_decoder_select="wmv3_decoder"
2628 xma1_decoder_select="wmapro_decoder"
2629 xma2_decoder_select="wmapro_decoder"
2630 zerocodec_decoder_select="zlib"
2631 zlib_decoder_select="zlib"
2632 zlib_encoder_select="zlib"
2633 zmbv_decoder_select="zlib"
2634 zmbv_encoder_select="zlib"
2635
2636 # hardware accelerators
2637 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2638 cuda_deps_any="dlopen LoadLibrary"
2639 cuvid_deps="cuda"
2640 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2641 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2642 dxva2_extralibs="-luser32"
2643 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2644 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2645 vda_deps="vda_framework pthreads"
2646 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2647 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2648 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2649 xvmc_deps="X11_extensions_XvMClib_h"
2650
2651 h263_vaapi_hwaccel_deps="vaapi"
2652 h263_vaapi_hwaccel_select="h263_decoder"
2653 h263_videotoolbox_hwaccel_deps="videotoolbox"
2654 h263_videotoolbox_hwaccel_select="h263_decoder"
2655 h264_cuvid_hwaccel_deps="cuda cuvid"
2656 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2657 h264_d3d11va_hwaccel_deps="d3d11va"
2658 h264_d3d11va_hwaccel_select="h264_decoder"
2659 h264_d3d11va2_hwaccel_deps="d3d11va"
2660 h264_d3d11va2_hwaccel_select="h264_decoder"
2661 h264_dxva2_hwaccel_deps="dxva2"
2662 h264_dxva2_hwaccel_select="h264_decoder"
2663 h264_mediacodec_hwaccel_deps="mediacodec"
2664 h264_mmal_hwaccel_deps="mmal"
2665 h264_qsv_hwaccel_deps="libmfx"
2666 h264_vaapi_hwaccel_deps="vaapi"
2667 h264_vaapi_hwaccel_select="h264_decoder"
2668 h264_vda_hwaccel_deps="vda"
2669 h264_vda_hwaccel_select="h264_decoder"
2670 h264_vda_old_hwaccel_deps="vda"
2671 h264_vda_old_hwaccel_select="h264_decoder"
2672 h264_vdpau_hwaccel_deps="vdpau"
2673 h264_vdpau_hwaccel_select="h264_decoder"
2674 h264_videotoolbox_hwaccel_deps="videotoolbox"
2675 h264_videotoolbox_hwaccel_select="h264_decoder"
2676 hevc_cuvid_hwaccel_deps="cuda cuvid"
2677 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2678 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2679 hevc_d3d11va_hwaccel_select="hevc_decoder"
2680 hevc_mediacodec_hwaccel_deps="mediacodec"
2681 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2682 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2683 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2684 hevc_dxva2_hwaccel_select="hevc_decoder"
2685 hevc_qsv_hwaccel_deps="libmfx"
2686 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2687 hevc_vaapi_hwaccel_select="hevc_decoder"
2688 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2689 hevc_vdpau_hwaccel_select="hevc_decoder"
2690 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2691 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2692 mpeg_xvmc_hwaccel_deps="xvmc"
2693 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2694 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2695 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2696 mpeg1_vdpau_hwaccel_deps="vdpau"
2697 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2698 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2699 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2700 mpeg1_xvmc_hwaccel_deps="xvmc"
2701 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2702 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2703 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2704 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2705 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2706 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2707 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2708 mpeg2_dxva2_hwaccel_deps="dxva2"
2709 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2710 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2711 mpeg2_mmal_hwaccel_deps="mmal"
2712 mpeg2_qsv_hwaccel_deps="libmfx"
2713 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2714 mpeg2_vaapi_hwaccel_deps="vaapi"
2715 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_vdpau_hwaccel_deps="vdpau"
2717 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2719 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_xvmc_hwaccel_deps="xvmc"
2721 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2722 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2723 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2724 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2725 mpeg4_mmal_hwaccel_deps="mmal"
2726 mpeg4_vaapi_hwaccel_deps="vaapi"
2727 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2728 mpeg4_vdpau_hwaccel_deps="vdpau"
2729 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2730 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2731 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2732 vc1_cuvid_hwaccel_deps="cuda cuvid"
2733 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2734 vc1_d3d11va_hwaccel_deps="d3d11va"
2735 vc1_d3d11va_hwaccel_select="vc1_decoder"
2736 vc1_d3d11va2_hwaccel_deps="d3d11va"
2737 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2738 vc1_dxva2_hwaccel_deps="dxva2"
2739 vc1_dxva2_hwaccel_select="vc1_decoder"
2740 vc1_mmal_hwaccel_deps="mmal"
2741 vc1_qsv_hwaccel_deps="libmfx"
2742 vc1_qsv_hwaccel_select="qsvdec_vc1"
2743 vc1_vaapi_hwaccel_deps="vaapi"
2744 vc1_vaapi_hwaccel_select="vc1_decoder"
2745 vc1_vdpau_hwaccel_deps="vdpau"
2746 vc1_vdpau_hwaccel_select="vc1_decoder"
2747 vp8_cuvid_hwaccel_deps="cuda cuvid"
2748 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2749 vp9_cuvid_hwaccel_deps="cuda cuvid"
2750 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2751 vp8_mediacodec_hwaccel_deps="mediacodec"
2752 vp8_qsv_hwaccel_deps="libmfx"
2753 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2754 vp9_d3d11va_hwaccel_select="vp9_decoder"
2755 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2756 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2757 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2758 vp9_dxva2_hwaccel_select="vp9_decoder"
2759 vp9_mediacodec_hwaccel_deps="mediacodec"
2760 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2761 vp9_vaapi_hwaccel_select="vp9_decoder"
2762 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2763 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2764 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2765 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2766 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2767
2768 # hardware-accelerated codecs
2769 omx_deps="dlopen pthreads"
2770 omx_extralibs='$ldl'
2771 omx_rpi_select="omx"
2772 qsvdec_select="qsv"
2773 qsvenc_select="qsv"
2774 vaapi_encode_deps="vaapi"
2775 v4l2_m2m_deps_any="linux_videodev2_h"
2776
2777 hwupload_cuda_filter_deps="cuda"
2778 scale_npp_filter_deps="cuda libnpp"
2779 scale_cuda_filter_deps="cuda_sdk"
2780 thumbnail_cuda_filter_deps="cuda_sdk"
2781
2782 nvenc_deps="cuda"
2783 nvenc_deps_any="dlopen LoadLibrary"
2784 nvenc_encoder_deps="nvenc"
2785
2786 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2787 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2788 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2789 h264_cuvid_decoder_deps="cuda cuvid"
2790 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2791 h264_mediacodec_decoder_deps="mediacodec"
2792 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2793 h264_mmal_decoder_deps="mmal"
2794 h264_nvenc_encoder_deps="nvenc"
2795 h264_omx_encoder_deps="omx"
2796 h264_qsv_decoder_deps="libmfx"
2797 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2798 h264_qsv_encoder_deps="libmfx"
2799 h264_qsv_encoder_select="qsvenc"
2800 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2801 h264_vaapi_encoder_select="vaapi_encode golomb"
2802 h264_vda_decoder_deps="vda"
2803 h264_vda_decoder_select="h264_decoder"
2804 h264_vdpau_decoder_deps="vdpau"
2805 h264_vdpau_decoder_select="h264_decoder"
2806 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2807 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2808 hevc_cuvid_decoder_deps="cuda cuvid"
2809 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2810 hevc_mediacodec_decoder_deps="mediacodec"
2811 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2812 hevc_nvenc_encoder_deps="nvenc"
2813 hevc_qsv_decoder_deps="libmfx"
2814 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2815 hevc_qsv_encoder_deps="libmfx"
2816 hevc_qsv_encoder_select="hevcparse qsvenc"
2817 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2818 hevc_vaapi_encoder_select="vaapi_encode golomb"
2819 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2820 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2821 mjpeg_cuvid_decoder_deps="cuda cuvid"
2822 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2823 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2824 mpeg1_cuvid_decoder_deps="cuda cuvid"
2825 mpeg1_vdpau_decoder_deps="vdpau"
2826 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2827 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2828 mpeg2_crystalhd_decoder_select="crystalhd"
2829 mpeg2_cuvid_decoder_deps="cuda cuvid"
2830 mpeg2_mmal_decoder_deps="mmal"
2831 mpeg2_mediacodec_decoder_deps="mediacodec"
2832 mpeg2_qsv_decoder_deps="libmfx"
2833 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2834 mpeg2_qsv_encoder_deps="libmfx"
2835 mpeg2_qsv_encoder_select="qsvenc"
2836 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2837 mpeg2_vaapi_encoder_select="vaapi_encode"
2838 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2839 mpeg4_crystalhd_decoder_select="crystalhd"
2840 mpeg4_cuvid_decoder_deps="cuda cuvid"
2841 mpeg4_mediacodec_decoder_deps="mediacodec"
2842 mpeg4_mmal_decoder_deps="mmal"
2843 mpeg4_omx_encoder_deps="omx"
2844 mpeg4_vdpau_decoder_deps="vdpau"
2845 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2846 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2847 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2848 mpeg_vdpau_decoder_deps="vdpau"
2849 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2850 msmpeg4_crystalhd_decoder_select="crystalhd"
2851 nvenc_h264_encoder_select="h264_nvenc_encoder"
2852 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2853 vc1_crystalhd_decoder_select="crystalhd"
2854 vc1_cuvid_decoder_deps="cuda cuvid"
2855 vc1_mmal_decoder_deps="mmal"
2856 vc1_vdpau_decoder_deps="vdpau"
2857 vc1_vdpau_decoder_select="vc1_decoder"
2858 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2859 vp8_cuvid_decoder_deps="cuda cuvid"
2860 vp8_mediacodec_decoder_deps="mediacodec"
2861 vp8_qsv_decoder_deps="libmfx"
2862 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
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="cuda cuvid"
2868 vp9_mediacodec_decoder_deps="mediacodec"
2869 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2870 vp9_vaapi_encoder_select="vaapi_encode"
2871 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2872 wmv3_crystalhd_decoder_select="crystalhd"
2873 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2874
2875 # parsers
2876 h264_parser_select="golomb h264dsp h264parse"
2877 hevc_parser_select="hevcparse"
2878 mpegaudio_parser_select="mpegaudioheader"
2879 mpegvideo_parser_select="mpegvideo"
2880 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2881 vc1_parser_select="vc1dsp"
2882
2883 # bitstream_filters
2884 mjpeg2jpeg_bsf_select="jpegtables"
2885
2886 # external libraries
2887 aac_at_decoder_deps="audiotoolbox"
2888 ac3_at_decoder_deps="audiotoolbox"
2889 ac3_at_decoder_select="ac3_parser"
2890 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2891 alac_at_decoder_deps="audiotoolbox"
2892 amr_nb_at_decoder_deps="audiotoolbox"
2893 avisynth_deps_any="dlopen LoadLibrary"
2894 avisynth_demuxer_deps="avisynth"
2895 avisynth_demuxer_select="riffdec"
2896 eac3_at_decoder_deps="audiotoolbox"
2897 eac3_at_decoder_select="ac3_parser"
2898 gsm_ms_at_decoder_deps="audiotoolbox"
2899 ilbc_at_decoder_deps="audiotoolbox"
2900 mp1_at_decoder_deps="audiotoolbox"
2901 mp2_at_decoder_deps="audiotoolbox"
2902 mp3_at_decoder_deps="audiotoolbox"
2903 mp1_at_decoder_select="mpegaudioheader"
2904 mp2_at_decoder_select="mpegaudioheader"
2905 mp3_at_decoder_select="mpegaudioheader"
2906 pcm_alaw_at_decoder_deps="audiotoolbox"
2907 pcm_mulaw_at_decoder_deps="audiotoolbox"
2908 qdmc_at_decoder_deps="audiotoolbox"
2909 qdm2_at_decoder_deps="audiotoolbox"
2910 aac_at_encoder_deps="audiotoolbox"
2911 aac_at_encoder_select="audio_frame_queue"
2912 alac_at_encoder_deps="audiotoolbox"
2913 alac_at_encoder_select="audio_frame_queue"
2914 ilbc_at_encoder_deps="audiotoolbox"
2915 ilbc_at_encoder_select="audio_frame_queue"
2916 pcm_alaw_at_encoder_deps="audiotoolbox"
2917 pcm_alaw_at_encoder_select="audio_frame_queue"
2918 pcm_mulaw_at_encoder_deps="audiotoolbox"
2919 pcm_mulaw_at_encoder_select="audio_frame_queue"
2920 chromaprint_muxer_deps="chromaprint"
2921 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2922 libcelt_decoder_deps="libcelt"
2923 libfdk_aac_decoder_deps="libfdk_aac"
2924 libfdk_aac_encoder_deps="libfdk_aac"
2925 libfdk_aac_encoder_select="audio_frame_queue"
2926 libgme_demuxer_deps="libgme"
2927 libgsm_decoder_deps="libgsm"
2928 libgsm_encoder_deps="libgsm"
2929 libgsm_ms_decoder_deps="libgsm"
2930 libgsm_ms_encoder_deps="libgsm"
2931 libilbc_decoder_deps="libilbc"
2932 libilbc_encoder_deps="libilbc"
2933 libkvazaar_encoder_deps="libkvazaar"
2934 libmodplug_demuxer_deps="libmodplug"
2935 libmp3lame_encoder_deps="libmp3lame"
2936 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2937 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2938 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2939 libopencore_amrnb_encoder_select="audio_frame_queue"
2940 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2941 libopenh264_decoder_deps="libopenh264"
2942 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2943 libopenh264_encoder_deps="libopenh264"
2944 libopenjpeg_decoder_deps="libopenjpeg"
2945 libopenjpeg_encoder_deps="libopenjpeg"
2946 libopenmpt_demuxer_deps="libopenmpt"
2947 libopus_decoder_deps="libopus"
2948 libopus_encoder_deps="libopus"
2949 libopus_encoder_select="audio_frame_queue"
2950 librsvg_decoder_deps="librsvg"
2951 libshine_encoder_deps="libshine"
2952 libshine_encoder_select="audio_frame_queue"
2953 libspeex_decoder_deps="libspeex"
2954 libspeex_encoder_deps="libspeex"
2955 libspeex_encoder_select="audio_frame_queue"
2956 libtheora_encoder_deps="libtheora"
2957 libtwolame_encoder_deps="libtwolame"
2958 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2959 libvorbis_decoder_deps="libvorbis"
2960 libvorbis_encoder_deps="libvorbis"
2961 libvorbis_encoder_select="audio_frame_queue"
2962 libvpx_vp8_decoder_deps="libvpx"
2963 libvpx_vp8_encoder_deps="libvpx"
2964 libvpx_vp9_decoder_deps="libvpx"
2965 libvpx_vp9_encoder_deps="libvpx"
2966 libwavpack_encoder_deps="libwavpack"
2967 libwavpack_encoder_select="audio_frame_queue"
2968 libwebp_encoder_deps="libwebp"
2969 libwebp_anim_encoder_deps="libwebp"
2970 libx262_encoder_deps="libx262"
2971 libx264_encoder_deps="libx264"
2972 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2973 libx264rgb_encoder_select="libx264_encoder"
2974 libx265_encoder_deps="libx265"
2975 libxavs_encoder_deps="libxavs"
2976 libxvid_encoder_deps="libxvid"
2977 libzvbi_teletext_decoder_deps="libzvbi"
2978 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2979 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2980 videotoolbox_encoder_suggest="vda_framework"
2981
2982 # demuxers / muxers
2983 ac3_demuxer_select="ac3_parser"
2984 aiff_muxer_select="iso_media"
2985 asf_demuxer_select="riffdec"
2986 asf_o_demuxer_select="riffdec"
2987 asf_muxer_select="riffenc"
2988 asf_stream_muxer_select="asf_muxer"
2989 avi_demuxer_select="iso_media riffdec exif"
2990 avi_muxer_select="riffenc"
2991 caf_demuxer_select="iso_media riffdec"
2992 caf_muxer_select="iso_media"
2993 dash_muxer_select="mp4_muxer"
2994 dash_demuxer_deps="libxml2"
2995 dirac_demuxer_select="dirac_parser"
2996 dts_demuxer_select="dca_parser"
2997 dtshd_demuxer_select="dca_parser"
2998 dv_demuxer_select="dvprofile"
2999 dv_muxer_select="dvprofile"
3000 dxa_demuxer_select="riffdec"
3001 eac3_demuxer_select="ac3_parser"
3002 f4v_muxer_select="mov_muxer"
3003 fifo_muxer_deps="threads"
3004 flac_demuxer_select="flac_parser"
3005 hds_muxer_select="flv_muxer"
3006 hls_muxer_select="mpegts_muxer"
3007 image2_alias_pix_demuxer_select="image2_demuxer"
3008 image2_brender_pix_demuxer_select="image2_demuxer"
3009 ipod_muxer_select="mov_muxer"
3010 ismv_muxer_select="mov_muxer"
3011 matroska_audio_muxer_select="matroska_muxer"
3012 matroska_demuxer_select="iso_media riffdec"
3013 matroska_demuxer_suggest="bzlib lzo zlib"
3014 matroska_muxer_select="iso_media riffenc"
3015 mmf_muxer_select="riffenc"
3016 mov_demuxer_select="iso_media riffdec"
3017 mov_demuxer_suggest="zlib"
3018 mov_muxer_select="iso_media riffenc rtpenc_chain"
3019 mp3_demuxer_select="mpegaudio_parser"
3020 mp3_muxer_select="mpegaudioheader"
3021 mp4_muxer_select="mov_muxer"
3022 mpegts_demuxer_select="iso_media"
3023 mpegts_muxer_select="adts_muxer latm_muxer"
3024 mpegtsraw_demuxer_select="mpegts_demuxer"
3025 mxf_d10_muxer_select="mxf_muxer"
3026 mxf_opatom_muxer_select="mxf_muxer"
3027 nut_muxer_select="riffenc"
3028 nuv_demuxer_select="riffdec"
3029 oga_muxer_select="ogg_muxer"
3030 ogg_demuxer_select="dirac_parse"
3031 ogv_muxer_select="ogg_muxer"
3032 opus_muxer_select="ogg_muxer"
3033 psp_muxer_select="mov_muxer"
3034 rtp_demuxer_select="sdp_demuxer"
3035 rtp_muxer_select="golomb"
3036 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3037 rtsp_demuxer_select="http_protocol rtpdec"
3038 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3039 sap_demuxer_select="sdp_demuxer"
3040 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3041 sdp_demuxer_select="rtpdec"
3042 smoothstreaming_muxer_select="ismv_muxer"
3043 spdif_muxer_select="aac_parser"
3044 spx_muxer_select="ogg_muxer"
3045 swf_demuxer_suggest="zlib"
3046 tak_demuxer_select="tak_parser"
3047 tg2_muxer_select="mov_muxer"
3048 tgp_muxer_select="mov_muxer"
3049 vobsub_demuxer_select="mpegps_demuxer"
3050 w64_demuxer_select="wav_demuxer"
3051 w64_muxer_select="wav_muxer"
3052 wav_demuxer_select="riffdec"
3053 wav_muxer_select="riffenc"
3054 webm_muxer_select="iso_media riffenc"
3055 webm_dash_manifest_demuxer_select="matroska_demuxer"
3056 wtv_demuxer_select="mpegts_demuxer riffdec"
3057 wtv_muxer_select="mpegts_muxer riffenc"
3058 xmv_demuxer_select="riffdec"
3059 xwma_demuxer_select="riffdec"
3060
3061 # indevs / outdevs
3062 alsa_indev_deps="alsa"
3063 alsa_outdev_deps="alsa"
3064 avfoundation_indev_deps="avfoundation pthreads"
3065 avfoundation_indev_extralibs="-framework Foundation -framework CoreVideo -framework CoreMedia"
3066 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3067 caca_outdev_deps="libcaca"
3068 decklink_indev_deps="decklink threads"
3069 decklink_indev_extralibs="-lstdc++"
3070 decklink_outdev_deps="decklink threads"
3071 decklink_outdev_extralibs="-lstdc++"
3072 libndi_newtek_indev_deps="libndi_newtek"
3073 libndi_newtek_indev_extralibs="-lndi"
3074 libndi_newtek_outdev_deps="libndi_newtek"
3075 libndi_newtek_outdev_extralibs="-lndi"
3076 dshow_indev_deps="IBaseFilter"
3077 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3078 dv1394_indev_deps="dv1394"
3079 dv1394_indev_select="dv_demuxer"
3080 fbdev_indev_deps="linux_fb_h"
3081 fbdev_outdev_deps="linux_fb_h"
3082 gdigrab_indev_deps="CreateDIBSection"
3083 gdigrab_indev_extralibs="-lgdi32"
3084 gdigrab_indev_select="bmp_decoder"
3085 iec61883_indev_deps="libiec61883"
3086 jack_indev_deps="jack"
3087 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3088 kmsgrab_indev_deps="libdrm"
3089 lavfi_indev_deps="avfilter"
3090 libcdio_indev_deps="libcdio"
3091 libdc1394_indev_deps="libdc1394"
3092 libv4l2_indev_deps="libv4l2"
3093 openal_indev_deps="openal"
3094 opengl_outdev_deps="opengl"
3095 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3096 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3097 pulse_indev_deps="libpulse"
3098 pulse_outdev_deps="libpulse"
3099 sdl2_outdev_deps="sdl2"
3100 sndio_indev_deps="sndio"
3101 sndio_outdev_deps="sndio"
3102 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3103 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3104 vfwcap_indev_deps="vfw32 vfwcap_defines"
3105 xcbgrab_indev_deps="libxcb"
3106 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3107 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3108 xv_outdev_extralibs="-lXv -lX11 -lXext"
3109
3110 # protocols
3111 async_protocol_deps="threads"
3112 bluray_protocol_deps="libbluray"
3113 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3114 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3115 ffrtmpcrypt_protocol_select="tcp_protocol"
3116 ffrtmphttp_protocol_deps="!librtmp_protocol"
3117 ffrtmphttp_protocol_select="http_protocol"
3118 ftp_protocol_select="tcp_protocol"
3119 gopher_protocol_select="network"
3120 http_protocol_select="tcp_protocol"
3121 httpproxy_protocol_select="tcp_protocol"
3122 https_protocol_select="tls_protocol"
3123 icecast_protocol_select="http_protocol"
3124 librtmp_protocol_deps="librtmp"
3125 librtmpe_protocol_deps="librtmp"
3126 librtmps_protocol_deps="librtmp"
3127 librtmpt_protocol_deps="librtmp"
3128 librtmpte_protocol_deps="librtmp"
3129 libsmbclient_protocol_deps="libsmbclient gplv3"
3130 libssh_protocol_deps="libssh"
3131 mmsh_protocol_select="http_protocol"
3132 mmst_protocol_select="network"
3133 rtmp_protocol_deps="!librtmp_protocol"
3134 rtmp_protocol_select="tcp_protocol"
3135 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3136 rtmps_protocol_deps="!librtmp_protocol"
3137 rtmps_protocol_select="tls_protocol"
3138 rtmpt_protocol_select="ffrtmphttp_protocol"
3139 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3140 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3141 rtp_protocol_select="udp_protocol"
3142 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3143 sctp_protocol_select="network"
3144 srtp_protocol_select="rtp_protocol srtp"
3145 tcp_protocol_select="network"
3146 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3147 tls_gnutls_protocol_select="tcp_protocol"
3148 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3149 tls_openssl_protocol_select="tcp_protocol"
3150 tls_schannel_protocol_deps="schannel"
3151 tls_schannel_protocol_select="tcp_protocol"
3152 tls_securetransport_protocol_deps="securetransport"
3153 tls_securetransport_protocol_select="tcp_protocol"
3154 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3155 udp_protocol_select="network"
3156 udplite_protocol_select="network"
3157 unix_protocol_deps="sys_un_h"
3158 unix_protocol_select="network"
3159
3160 # filters
3161 afftfilt_filter_deps="avcodec"
3162 afftfilt_filter_select="fft"
3163 afir_filter_deps="avcodec"
3164 afir_filter_select="fft"
3165 amovie_filter_deps="avcodec avformat"
3166 aresample_filter_deps="swresample"
3167 ass_filter_deps="libass"
3168 atempo_filter_deps="avcodec"
3169 atempo_filter_select="rdft"
3170 azmq_filter_deps="libzmq"
3171 blackframe_filter_deps="gpl"
3172 boxblur_filter_deps="gpl"
3173 bs2b_filter_deps="libbs2b"
3174 colormatrix_filter_deps="gpl"
3175 coreimage_filter_deps="coreimage appkit"
3176 coreimage_filter_extralibs="-framework OpenGL"
3177 coreimagesrc_filter_deps="coreimage appkit"
3178 coreimagesrc_filter_extralibs="-framework OpenGL"
3179 cover_rect_filter_deps="avcodec avformat gpl"
3180 cropdetect_filter_deps="gpl"
3181 deinterlace_qsv_filter_deps="libmfx"
3182 deinterlace_vaapi_filter_deps="vaapi"
3183 delogo_filter_deps="gpl"
3184 deshake_filter_select="pixelutils"
3185 drawtext_filter_deps="libfreetype"
3186 drawtext_filter_suggest="libfontconfig"
3187 elbg_filter_deps="avcodec"
3188 eq_filter_deps="gpl"
3189 fftfilt_filter_deps="avcodec"
3190 fftfilt_filter_select="rdft"
3191 find_rect_filter_deps="avcodec avformat gpl"
3192 firequalizer_filter_deps="avcodec"
3193 firequalizer_filter_select="rdft"
3194 flite_filter_deps="libflite"
3195 framerate_filter_select="pixelutils"
3196 frei0r_filter_deps="frei0r dlopen"
3197 frei0r_src_filter_deps="frei0r dlopen"
3198 fspp_filter_deps="gpl"
3199 geq_filter_deps="gpl"
3200 histeq_filter_deps="gpl"
3201 hqdn3d_filter_deps="gpl"
3202 interlace_filter_deps="gpl"
3203 kerndeint_filter_deps="gpl"
3204 ladspa_filter_deps="ladspa dlopen"
3205 mcdeint_filter_deps="avcodec gpl"
3206 movie_filter_deps="avcodec avformat"
3207 mpdecimate_filter_deps="gpl"
3208 mpdecimate_filter_select="pixelutils"
3209 mptestsrc_filter_deps="gpl"
3210 negate_filter_deps="lut_filter"
3211 nnedi_filter_deps="gpl"
3212 ocr_filter_deps="libtesseract"
3213 ocv_filter_deps="libopencv"
3214 owdenoise_filter_deps="gpl"
3215 pan_filter_deps="swresample"
3216 perspective_filter_deps="gpl"
3217 phase_filter_deps="gpl"
3218 pp7_filter_deps="gpl"
3219 pp_filter_deps="gpl postproc"
3220 pullup_filter_deps="gpl"
3221 removelogo_filter_deps="avcodec avformat swscale"
3222 repeatfields_filter_deps="gpl"
3223 resample_filter_deps="avresample"
3224 rubberband_filter_deps="librubberband"
3225 sab_filter_deps="gpl swscale"
3226 scale2ref_filter_deps="swscale"
3227 scale_filter_deps="swscale"
3228 scale_qsv_filter_deps="libmfx"
3229 select_filter_select="pixelutils"
3230 showcqt_filter_deps="avcodec avformat swscale"
3231 showcqt_filter_select="fft"
3232 showfreqs_filter_deps="avcodec"
3233 showfreqs_filter_select="fft"
3234 showspectrum_filter_deps="avcodec"
3235 showspectrum_filter_select="fft"
3236 showspectrumpic_filter_deps="avcodec"
3237 showspectrumpic_filter_select="fft"
3238 signature_filter_deps="gpl avcodec avformat"
3239 smartblur_filter_deps="gpl swscale"
3240 sofalizer_filter_deps="libmysofa avcodec"
3241 sofalizer_filter_select="fft"
3242 spectrumsynth_filter_deps="avcodec"
3243 spectrumsynth_filter_select="fft"
3244 spp_filter_deps="gpl avcodec"
3245 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3246 stereo3d_filter_deps="gpl"
3247 subtitles_filter_deps="avformat avcodec libass"
3248 super2xsai_filter_deps="gpl"
3249 pixfmts_super2xsai_test_deps="super2xsai_filter"
3250 tinterlace_filter_deps="gpl"
3251 tinterlace_merge_test_deps="tinterlace_filter"
3252 tinterlace_pad_test_deps="tinterlace_filter"
3253 tonemap_filter_deps="const_nan"
3254 uspp_filter_deps="gpl avcodec"
3255 vaguedenoiser_filter_deps="gpl"
3256 vidstabdetect_filter_deps="libvidstab"
3257 vidstabtransform_filter_deps="libvidstab"
3258 libvmaf_filter_deps="libvmaf"
3259 zmq_filter_deps="libzmq"
3260 zoompan_filter_deps="swscale"
3261 zscale_filter_deps="libzimg const_nan"
3262 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3263
3264 # examples
3265 avio_dir_cmd_deps="avformat avutil"
3266 avio_reading_deps="avformat avcodec avutil"
3267 decode_audio_example_deps="avcodec avutil"
3268 decode_video_example_deps="avcodec avutil"
3269 demuxing_decoding_example_deps="avcodec avformat avutil"
3270 encode_audio_example_deps="avcodec avutil"
3271 encode_video_example_deps="avcodec avutil"
3272 extract_mvs_example_deps="avcodec avformat avutil"
3273 filter_audio_example_deps="avfilter avutil"
3274 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3275 filtering_video_example_deps="avfilter avcodec avformat avutil"
3276 http_multiclient_example_deps="avformat avutil fork"
3277 hw_decode_example_deps="avcodec avformat avutil"
3278 metadata_example_deps="avformat avutil"
3279 muxing_example_deps="avcodec avformat avutil swscale"
3280 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3281 remuxing_example_deps="avcodec avformat avutil"
3282 resampling_audio_example_deps="avutil swresample"
3283 scaling_video_example_deps="avutil swscale"
3284 transcode_aac_example_deps="avcodec avformat swresample"
3285 transcoding_example_deps="avfilter avcodec avformat avutil"
3286
3287 # libraries, in linking order
3288 avcodec_deps="avutil"
3289 avcodec_select="null_bsf"
3290 avdevice_deps="avformat avcodec avutil"
3291 avfilter_deps="avutil"
3292 avformat_deps="avcodec avutil"
3293 avformat_suggest="network"
3294 avresample_deps="avutil"
3295 postproc_deps="avutil gpl"
3296 swresample_deps="avutil"
3297 swscale_deps="avutil"
3298
3299 # programs
3300 ffmpeg_deps="avcodec avfilter avformat swresample"
3301 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3302                null_filter
3303                trim_filter"
3304 ffplay_deps="avcodec avformat swscale swresample sdl2"
3305 ffplay_extralibs='$sdl2_extralibs'
3306 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3307 ffprobe_deps="avcodec avformat"
3308 ffserver_deps="avformat fork sarestart"
3309 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3310
3311 # documentation
3312 podpages_deps="perl"
3313 manpages_deps="perl pod2man"
3314 htmlpages_deps="perl"
3315 htmlpages_deps_any="makeinfo_html texi2html"
3316 txtpages_deps="perl makeinfo"
3317 doc_deps_any="manpages htmlpages podpages txtpages"
3318
3319 # default parameters
3320
3321 logfile="ffbuild/config.log"
3322
3323 # installation paths
3324 prefix_default="/usr/local"
3325 bindir_default='${prefix}/bin'
3326 datadir_default='${prefix}/share/ffmpeg'
3327 docdir_default='${prefix}/share/doc/ffmpeg'
3328 incdir_default='${prefix}/include'
3329 libdir_default='${prefix}/lib'
3330 mandir_default='${prefix}/share/man'
3331
3332 # toolchain
3333 ar_default="ar"
3334 cc_default="gcc"
3335 cxx_default="g++"
3336 host_cc_default="gcc"
3337 doxygen_default="doxygen"
3338 install="install"
3339 ln_s_default="ln -s -f"
3340 nm_default="nm -g"
3341 pkg_config_default=pkg-config
3342 ranlib_default="ranlib"
3343 strip_default="strip"
3344 version_script='--version-script'
3345 x86asmexe_default="nasm"
3346 windres_default="windres"
3347 nvcc_default="nvcc"
3348 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3349
3350 # OS
3351 target_os_default=$(tolower $(uname -s))
3352 host_os=$target_os_default
3353
3354 # machine
3355 if test "$target_os_default" = aix; then
3356     arch_default=$(uname -p)
3357     strip_default="strip -X32_64"
3358 else
3359     arch_default=$(uname -m)
3360 fi
3361 cpu="generic"
3362 intrinsics="none"
3363
3364 # configurable options
3365 enable $PROGRAM_LIST
3366 enable $DOCUMENT_LIST
3367 enable $EXAMPLE_LIST
3368 enable $(filter_out avresample $LIBRARY_LIST)
3369 enable stripping
3370
3371 enable asm
3372 enable debug
3373 enable doc
3374 enable faan faandct faanidct
3375 enable optimizations
3376 enable runtime_cpudetect
3377 enable safe_bitstream_reader
3378 enable static
3379 enable swscale_alpha
3380 enable valgrind_backtrace
3381
3382 sws_max_filter_size_default=256
3383 set_default sws_max_filter_size
3384
3385 # build settings
3386 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3387 LIBPREF="lib"
3388 LIBSUF=".a"
3389 FULLNAME='$(NAME)$(BUILDSUF)'
3390 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3391 SLIBPREF="lib"
3392 SLIBSUF=".so"
3393 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3394 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3395 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3396 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3397 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3398 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3399 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3400
3401 asflags_filter=echo
3402 cflags_filter=echo
3403 ldflags_filter=echo
3404
3405 AS_C='-c'
3406 AS_O='-o $@'
3407 CC_C='-c'
3408 CC_E='-E -o $@'
3409 CC_O='-o $@'
3410 CXX_C='-c'
3411 CXX_O='-o $@'
3412 OBJCC_C='-c'
3413 OBJCC_E='-E -o $@'
3414 OBJCC_O='-o $@'
3415 X86ASM_O='-o $@'
3416 LD_O='-o $@'
3417 LD_LIB='-l%'
3418 LD_PATH='-L'
3419 HOSTCC_C='-c'
3420 HOSTCC_E='-E -o $@'
3421 HOSTCC_O='-o $@'
3422 HOSTLD_O='-o $@'
3423 NVCC_C='-c'
3424 NVCC_O='-o $@'
3425
3426 host_extralibs='-lm'
3427 host_cflags_filter=echo
3428 host_ldflags_filter=echo
3429
3430 target_path='$(CURDIR)'
3431
3432 # since the object filename is not given with the -MM flag, the compiler
3433 # is only able to print the basename, and we must add the path ourselves
3434 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3435 DEPFLAGS='-MM'
3436
3437 mkdir -p ffbuild
3438
3439 # find source path
3440 if test -f configure; then
3441     source_path=.
3442 else
3443     source_path=$(cd $(dirname "$0"); pwd)
3444     case "$source_path" in
3445         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3446     esac
3447     test -e "$source_path/config.h" &&
3448         die "Out of tree builds are impossible with config.h in source dir."
3449 fi
3450
3451 for v in "$@"; do
3452     r=${v#*=}
3453     l=${v%"$r"}
3454     r=$(sh_quote "$r")
3455     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3456 done
3457
3458 find_things(){
3459     thing=$1
3460     pattern=$2
3461     file=$source_path/$3
3462     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3463 }
3464
3465 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3466 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3467 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3468 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3469 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3470 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3471 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3472 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3473 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3474
3475 find_things_extern(){
3476     thing=$1
3477     pattern=$2
3478     file=$source_path/$3
3479     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3480 }
3481
3482 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3483 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3484
3485 ALL_COMPONENTS="
3486     $BSF_LIST
3487     $DECODER_LIST
3488     $DEMUXER_LIST
3489     $ENCODER_LIST
3490     $FILTER_LIST
3491     $HWACCEL_LIST
3492     $INDEV_LIST
3493     $MUXER_LIST
3494     $OUTDEV_LIST
3495     $PARSER_LIST
3496     $PROTOCOL_LIST
3497 "
3498
3499 for n in $COMPONENT_LIST; do
3500     v=$(toupper ${n%s})_LIST
3501     eval enable \$$v
3502     eval ${n}_if_any="\$$v"
3503 done
3504
3505 enable $ARCH_EXT_LIST
3506
3507 die_unknown(){
3508     echo "Unknown option \"$1\"."
3509     echo "See $0 --help for available options."
3510     exit 1
3511 }
3512
3513 print_in_columns() {
3514     cols=$(expr $ncols / 24)
3515     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3516 }
3517
3518 show_list() {
3519     suffix=_$1
3520     shift
3521     echo $* | sed s/$suffix//g | print_in_columns
3522     exit 0
3523 }
3524
3525 rand_list(){
3526     IFS=', '
3527     set -- $*
3528     unset IFS
3529     for thing; do
3530         comp=${thing%:*}
3531         prob=${thing#$comp}
3532         prob=${prob#:}
3533         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3534         echo "prob ${prob:-0.5}"
3535         printf '%s\n' $comp
3536     done
3537 }
3538
3539 do_random(){
3540     action=$1
3541     shift
3542     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3543     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3544 }
3545
3546 for opt do
3547     optval="${opt#*=}"
3548     case "$opt" in
3549         --extra-ldflags=*)
3550             add_ldflags $optval
3551         ;;
3552         --extra-ldexeflags=*)
3553             add_ldexeflags $optval
3554         ;;
3555         --extra-ldlibflags=*)
3556             add_ldlibflags $optval
3557         ;;
3558         --extra-libs=*)
3559             add_extralibs $optval
3560         ;;
3561         --disable-devices)
3562             disable $INDEV_LIST $OUTDEV_LIST
3563         ;;
3564         --enable-debug=*)
3565             debuglevel="$optval"
3566         ;;
3567         --disable-programs)
3568             disable $PROGRAM_LIST
3569         ;;
3570         --disable-everything)
3571             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3572         ;;
3573         --disable-all)
3574             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3575             disable $LIBRARY_LIST $PROGRAM_LIST doc
3576             enable avutil
3577         ;;
3578         --enable-random|--disable-random)
3579             action=${opt%%-random}
3580             do_random ${action#--} $COMPONENT_LIST
3581         ;;
3582         --enable-random=*|--disable-random=*)
3583             action=${opt%%-random=*}
3584             do_random ${action#--} $optval
3585         ;;
3586         --enable-sdl)
3587             enable sdl2
3588         ;;
3589         --enable-*=*|--disable-*=*)
3590             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3591             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3592             eval list=\$$(toupper $thing)_LIST
3593             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3594             list=$(filter "$name" $list)
3595             [ "$list" = "" ] && warn "Option $opt did not match anything"
3596             $action $list
3597         ;;
3598         --enable-yasm|--disable-yasm)
3599             warn "The ${opt} option is only provided for compatibility and will be\n"\
3600                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3601             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3602         ;;
3603         --yasmexe=*)
3604             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3605                  "removed in the future. Use --x86asmexe instead."
3606             x86asmexe="$optval"
3607         ;;
3608         --enable-?*|--disable-?*)
3609             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3610             if is_in $option $COMPONENT_LIST; then
3611                 test $action = disable && action=unset
3612                 eval $action \$$(toupper ${option%s})_LIST
3613             elif is_in $option $CMDLINE_SELECT; then
3614                 $action $option
3615             else
3616                 die_unknown $opt
3617             fi
3618         ;;
3619         --list-*)
3620             NAME="${opt#--list-}"
3621             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3622             NAME=${NAME%s}
3623             eval show_list $NAME \$$(toupper $NAME)_LIST
3624         ;;
3625         --help|-h) show_help
3626         ;;
3627         --quiet|-q) quiet=yes
3628         ;;
3629         --fatal-warnings) enable fatal_warnings
3630         ;;
3631         --libfuzzer=*)
3632             libfuzzer_path="$optval"
3633         ;;
3634         *)
3635             optname="${opt%%=*}"
3636             optname="${optname#--}"
3637             optname=$(echo "$optname" | sed 's/-/_/g')
3638             if is_in $optname $CMDLINE_SET; then
3639                 eval $optname='$optval'
3640             elif is_in $optname $CMDLINE_APPEND; then
3641                 append $optname "$optval"
3642             else
3643                 die_unknown $opt
3644             fi
3645         ;;
3646     esac
3647 done
3648
3649 for e in $env; do
3650     eval "export $e"
3651 done
3652
3653 if disabled autodetect; then
3654
3655     # Unless iconv is explicitely disabled by the user, we still want to probe
3656     # for the iconv from the libc.
3657     disabled iconv || enable libc_iconv
3658
3659     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3660     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3661 fi
3662 # Mark specifically enabled, but normally autodetected libraries as requested.
3663 for lib in $AUTODETECT_LIBS; do
3664     enabled $lib && request $lib
3665 done
3666 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3667 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3668 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3669
3670 disabled logging && logfile=/dev/null
3671
3672 die_license_disabled() {
3673     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3674 }
3675
3676 die_license_disabled_gpl() {
3677     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3678 }
3679
3680 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3681 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3682
3683 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3684 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3685
3686 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3687
3688 # Disable all the library-specific components if the library itself
3689 # is disabled, see AVCODEC_LIST and following _LIST variables.
3690
3691 disable_components(){
3692     disabled ${1} && disable $(
3693         eval components="\$$(toupper ${1})_COMPONENTS"
3694         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3695     )
3696 }
3697
3698 map 'disable_components $v' $LIBRARY_LIST
3699
3700 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3701 set >> $logfile
3702
3703 test -n "$valgrind" && toolchain="valgrind-memcheck"
3704
3705 enabled ossfuzz && {
3706     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3707     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3708 }
3709
3710 case "$toolchain" in
3711     *-asan)
3712         cc_default="${toolchain%-asan}"
3713         add_cflags  -fsanitize=address
3714         add_ldflags -fsanitize=address
3715     ;;
3716     *-msan)
3717         cc_default="${toolchain%-msan}"
3718         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3719         add_ldflags -fsanitize=memory
3720     ;;
3721     *-tsan)
3722         cc_default="${toolchain%-tsan}"
3723         add_cflags  -fsanitize=thread -fPIE
3724         add_ldflags -fsanitize=thread -pie
3725         case "$toolchain" in
3726             gcc-tsan)
3727                 add_cflags  -fPIC
3728                 add_ldflags -fPIC
3729                 ;;
3730         esac
3731     ;;
3732     *-usan)
3733         cc_default="${toolchain%-usan}"
3734         add_cflags  -fsanitize=undefined
3735         add_ldflags -fsanitize=undefined
3736     ;;
3737     valgrind-*)
3738         target_exec_default="valgrind"
3739         case "$toolchain" in
3740             valgrind-massif)
3741                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3742                 ;;
3743             valgrind-memcheck)
3744                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3745                 ;;
3746         esac
3747     ;;
3748     msvc)
3749         # Check whether the current MSVC version needs the C99 converter.
3750         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3751         # support enough of C99 to build ffmpeg. Default to the new
3752         # behaviour if the regexp was unable to match anything, since this
3753         # successfully parses the version number of existing supported
3754         # versions that require the converter (MSVC 2010 and 2012).
3755         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3756         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3757             cc_default="cl"
3758             cxx_default="cl"
3759         else
3760             cc_default="c99wrap cl"
3761             cxx_default="c99wrap cl"
3762         fi
3763         ld_default="$source_path/compat/windows/mslink"
3764         nm_default="dumpbin -symbols"
3765         ar_default="lib"
3766         case "$arch" in
3767         arm*)
3768             as_default="armasm"
3769             ;;
3770         esac
3771         target_os_default="win32"
3772         # Use a relative path for TMPDIR. This makes sure all the
3773         # ffconf temp files are written with a relative path, avoiding
3774         # issues with msys/win32 path conversion for MSVC parameters
3775         # such as -Fo<file> or -out:<file>.
3776         TMPDIR=.
3777     ;;
3778     icl)
3779         cc_default="icl"
3780         ld_default="xilink"
3781         nm_default="dumpbin -symbols"
3782         ar_default="xilib"
3783         target_os_default="win32"
3784         TMPDIR=.
3785     ;;
3786     gcov)
3787         add_cflags  -fprofile-arcs -ftest-coverage
3788         add_ldflags -fprofile-arcs -ftest-coverage
3789     ;;
3790     llvm-cov)
3791         add_cflags -fprofile-arcs -ftest-coverage
3792         add_ldflags --coverage
3793     ;;
3794     hardened)
3795         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3796         add_cflags   -fno-strict-overflow -fstack-protector-all
3797         add_ldflags  -Wl,-z,relro -Wl,-z,now
3798         add_cflags   -fPIE
3799         add_ldexeflags -fPIE -pie
3800     ;;
3801     ?*)
3802         die "Unknown toolchain $toolchain"
3803     ;;
3804 esac
3805
3806 test -n "$cross_prefix" && enable cross_compile
3807
3808 if enabled cross_compile; then
3809     test -n "$arch" && test -n "$target_os" ||
3810         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3811 fi
3812
3813 ar_default="${cross_prefix}${ar_default}"
3814 cc_default="${cross_prefix}${cc_default}"
3815 cxx_default="${cross_prefix}${cxx_default}"
3816 nm_default="${cross_prefix}${nm_default}"
3817 pkg_config_default="${cross_prefix}${pkg_config_default}"
3818 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3819     ranlib_default="${cross_prefix}${ranlib_default} -D"
3820 else
3821     ranlib_default="${cross_prefix}${ranlib_default}"
3822 fi
3823 strip_default="${cross_prefix}${strip_default}"
3824 windres_default="${cross_prefix}${windres_default}"
3825
3826 sysinclude_default="${sysroot}/usr/include"
3827
3828 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3829     target_exec target_os x86asmexe nvcc
3830 enabled cross_compile || host_cc_default=$cc
3831 set_default host_cc
3832
3833 pkg_config_fail_message=""
3834 if ! $pkg_config --version >/dev/null 2>&1; then
3835     warn "$pkg_config not found, library detection may fail."
3836     pkg_config=false
3837 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3838     pkg_config_fail_message="
3839 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3840 fi
3841
3842 if test $doxygen != $doxygen_default && \
3843   ! $doxygen --version >/dev/null 2>&1; then
3844     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3845 fi
3846
3847 exesuf() {
3848     case $1 in
3849         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3850     esac
3851 }
3852
3853 EXESUF=$(exesuf $target_os)
3854 HOSTEXESUF=$(exesuf $host_os)
3855
3856 # set temporary file name
3857 : ${TMPDIR:=$TEMPDIR}
3858 : ${TMPDIR:=$TMP}
3859 : ${TMPDIR:=/tmp}
3860
3861 if [ -n "$tempprefix" ] ; then
3862     mktemp(){
3863         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3864         echo "$tmpname"
3865         mkdir "$tmpname"
3866     }
3867 elif ! check_cmd mktemp -u XXXXXX; then
3868     # simple replacement for missing mktemp
3869     # NOT SAFE FOR GENERAL USE
3870     mktemp(){
3871         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3872         echo "$tmpname"
3873         mkdir "$tmpname"
3874     }
3875 fi
3876
3877 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3878     die "Unable to create temporary directory in $TMPDIR."
3879
3880 tmpfile(){
3881     tmp="${FFTMPDIR}/test"$2
3882     (set -C; exec > $tmp) 2> /dev/null ||
3883         die "Unable to create temporary file in $FFTMPDIR."
3884     eval $1=$tmp
3885 }
3886
3887 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3888 trap 'exit 2' INT
3889
3890 tmpfile TMPASM .asm
3891 tmpfile TMPC   .c
3892 tmpfile TMPCPP .cpp
3893 tmpfile TMPE   $EXESUF
3894 tmpfile TMPH   .h
3895 tmpfile TMPM   .m
3896 tmpfile TMPO   .o
3897 tmpfile TMPS   .S
3898 tmpfile TMPSH  .sh
3899 tmpfile TMPV   .ver
3900
3901 unset -f mktemp
3902
3903 chmod +x $TMPE
3904
3905 # make sure we can execute files in $TMPDIR
3906 cat > $TMPSH 2>> $logfile <<EOF
3907 #! /bin/sh
3908 EOF
3909 chmod +x $TMPSH >> $logfile 2>&1
3910 if ! $TMPSH >> $logfile 2>&1; then
3911     cat <<EOF
3912 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3913 variable to another directory and make sure that it is not mounted noexec.
3914 EOF
3915     die "Sanity test failed."
3916 fi
3917
3918 armasm_flags(){
3919     for flag; do
3920         case $flag in
3921             # Filter out MSVC cl.exe options from cflags that shouldn't
3922             # be passed to gas-preprocessor
3923             -M[TD]*)                                            ;;
3924             *)                  echo $flag                      ;;
3925         esac
3926    done
3927 }
3928
3929 ccc_flags(){
3930     for flag; do
3931         case $flag in
3932             -std=c99)           echo -c99                       ;;
3933             -mcpu=*)            echo -arch ${flag#*=}           ;;
3934             -mieee)             echo -ieee                      ;;
3935             -O*|-fast)          echo $flag                      ;;
3936             -fno-math-errno)    echo -assume nomath_errno       ;;
3937             -g)                 echo -g3                        ;;
3938             -Wall)              echo -msg_enable level2         ;;
3939             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3940             -Wl,*)              echo $flag                      ;;
3941             -f*|-W*)                                            ;;
3942             *)                  echo $flag                      ;;
3943         esac
3944    done
3945 }
3946
3947 cparser_flags(){
3948     for flag; do
3949         case $flag in
3950             -Wno-switch)             echo -Wno-switch-enum ;;
3951             -Wno-format-zero-length) ;;
3952             -Wdisabled-optimization) ;;
3953             -Wno-pointer-sign)       echo -Wno-other ;;
3954             *)                       echo $flag ;;
3955         esac
3956     done
3957 }
3958
3959 msvc_common_flags(){
3960     for flag; do
3961         case $flag in
3962             # In addition to specifying certain flags under the compiler
3963             # specific filters, they must be specified here as well or else the
3964             # generic catch all at the bottom will print the original flag.
3965             -Wall)                ;;
3966             -Wextra)              ;;
3967             -std=c99)             ;;
3968             # Common flags
3969             -fomit-frame-pointer) ;;
3970             -g)                   echo -Z7 ;;
3971             -fno-math-errno)      ;;
3972             -fno-common)          ;;
3973             -fno-signed-zeros)    ;;
3974             -fPIC)                ;;
3975             -mthumb)              ;;
3976             -march=*)             ;;
3977             -lz)                  echo zlib.lib ;;
3978             -lx264)               echo libx264.lib ;;
3979             -lstdc++)             ;;
3980             -l*)                  echo ${flag#-l}.lib ;;
3981             -LARGEADDRESSAWARE)   echo $flag ;;
3982             -L*)                  echo -libpath:${flag#-L} ;;
3983             *)                    echo $flag ;;
3984         esac
3985     done
3986 }
3987
3988 msvc_flags(){
3989     msvc_common_flags "$@"
3990     for flag; do
3991         case $flag in
3992             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3993                                        -wd4554 ;;
3994             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3995                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3996                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3997                                        -wd4307 \
3998                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3999         esac
4000     done
4001 }
4002
4003 icl_flags(){
4004     msvc_common_flags "$@"
4005     for flag; do
4006         case $flag in
4007             # Despite what Intel's documentation says -Wall, which is supported
4008             # on Windows, does enable remarks so disable them here.
4009             -Wall)                echo $flag -Qdiag-disable:remark ;;
4010             -std=c99)             echo -Qstd=c99 ;;
4011             -flto)                echo -ipo ;;
4012         esac
4013     done
4014 }
4015
4016 icc_flags(){
4017     for flag; do
4018         case $flag in
4019             -flto)                echo -ipo ;;
4020             *)                    echo $flag ;;
4021         esac
4022     done
4023 }
4024
4025 pgi_flags(){
4026     for flag; do
4027         case $flag in
4028             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4029             -fomit-frame-pointer) echo -Mnoframe ;;
4030             -g)                   echo -gopt ;;
4031             *)                    echo $flag ;;
4032         esac
4033     done
4034 }
4035
4036 suncc_flags(){
4037     for flag; do
4038         case $flag in
4039             -march=*|-mcpu=*)
4040                 case "${flag#*=}" in
4041                     native)                   echo -xtarget=native       ;;
4042                     v9|niagara)               echo -xarch=sparc          ;;
4043                     ultrasparc)               echo -xarch=sparcvis       ;;
4044                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4045                     i586|pentium)             echo -xchip=pentium        ;;
4046                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4047                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4048                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4049                     pentium4*)          echo -xtarget=pentium4           ;;
4050                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4051                     *-sse3)             echo -xarch=sse3                 ;;
4052                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4053                     bonnell)                   echo -xarch=ssse3         ;;
4054                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4055                     westmere)                  echo -xtarget=westmere    ;;
4056                     silvermont)                echo -xarch=sse4_2        ;;
4057                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4058                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4059                                                echo -xarch=avx           ;;
4060                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4061                     btver1)                    echo -xarch=amdsse4a      ;;
4062                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4063                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4064                     k8|opteron|athlon64|athlon-fx)
4065                                                echo -xarch=sse2a         ;;
4066                     athlon*)                   echo -xarch=pentium_proa  ;;
4067                 esac
4068                 ;;
4069             -std=c99)             echo -xc99              ;;
4070             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4071             -fPIC)                echo -KPIC -xcode=pic32 ;;
4072             -W*,*)                echo $flag              ;;
4073             -f*-*|-W*|-mimpure-text)                      ;;
4074             -shared)              echo -G                 ;;
4075             *)                    echo $flag              ;;
4076         esac
4077     done
4078 }
4079
4080 tms470_flags(){
4081     for flag; do
4082         case $flag in
4083             -march=*|-mcpu=*)
4084                 case "${flag#*=}" in
4085                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4086                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4087                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4088                     armv6*|arm11*)          echo -mv=6   ;;
4089                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4090                                             echo -mv=5e  ;;
4091                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4092                 esac
4093                 ;;
4094             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4095             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4096             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4097             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4098             -msoft-float)   echo --float_support=vfplib       ;;
4099             -O[0-3]|-mf=*)  echo $flag                        ;;
4100             -g)             echo -g -mn                       ;;
4101             -pds=*)         echo $flag                        ;;
4102             -D*|-I*)        echo $flag                        ;;
4103             --gcc|--abi=*)  echo $flag                        ;;
4104             -me)            echo $flag                        ;;
4105         esac
4106     done
4107 }
4108
4109 probe_cc(){
4110     pfx=$1
4111     _cc=$2
4112     first=$3
4113
4114     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4115     unset _ld_o _ldflags _ld_lib _ld_path
4116     unset _depflags _DEPCMD _DEPFLAGS
4117     _flags_filter=echo
4118
4119     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4120         true # no-op to avoid reading stdin in following checks
4121     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4122         _type=llvm_gcc
4123         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4124         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4125         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4126         _cflags_speed='-O3'
4127         _cflags_size='-Os'
4128     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4129         _type=gcc
4130         gcc_version=$($_cc --version | head -n1)
4131         gcc_basever=$($_cc -dumpversion)
4132         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4133         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4134         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4135         case $gcc_basever in
4136             2) ;;
4137             2.*) ;;
4138             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4139         esac
4140         if [ "$first" = true ]; then
4141             case $gcc_basever in
4142                 4.2*)
4143                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4144             esac
4145         fi
4146         _cflags_speed='-O3'
4147         _cflags_size='-Os'
4148     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4149         _type=icc
4150         _ident=$($_cc --version | head -n1)
4151         _depflags='-MMD'
4152         _cflags_speed='-O3'
4153         _cflags_size='-Os'
4154         _cflags_noopt='-O1'
4155         _flags_filter=icc_flags
4156     elif $_cc -v 2>&1 | grep -q xlc; then
4157         _type=xlc
4158         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4159         _cflags_speed='-O5'
4160         _cflags_size='-O5 -qcompact'
4161     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4162         _type=ccc
4163         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4164         _DEPFLAGS='-M'
4165         _cflags_speed='-fast'
4166         _cflags_size='-O1'
4167         _flags_filter=ccc_flags
4168     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4169         test -d "$sysroot" || die "No valid sysroot specified."
4170         _type=armcc
4171         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4172         armcc_conf="$PWD/armcc.conf"
4173         $_cc --arm_linux_configure                 \
4174              --arm_linux_config_file="$armcc_conf" \
4175              --configure_sysroot="$sysroot"        \
4176              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4177              die "Error creating armcc configuration file."
4178         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4179         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4180         as_default="${cross_prefix}gcc"
4181         _depflags='-MMD'
4182         _cflags_speed='-O3'
4183         _cflags_size='-Os'
4184     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4185         _type=tms470
4186         _ident=$($_cc -version | head -n1 | tr -s ' ')
4187         _flags='--gcc --abi=eabi -me'
4188         _cc_e='-ppl -fe=$@'
4189         _cc_o='-fe=$@'
4190         _depflags='-ppa -ppd=$(@:.o=.d)'
4191         _cflags_speed='-O3 -mf=5'
4192         _cflags_size='-O3 -mf=2'
4193         _flags_filter=tms470_flags
4194     elif $_cc -v 2>&1 | grep -q clang; then
4195         _type=clang
4196         _ident=$($_cc --version 2>/dev/null | head -n1)
4197         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4198         _cflags_speed='-O3'
4199         _cflags_size='-Oz'
4200     elif $_cc -V 2>&1 | grep -q Sun; then
4201         _type=suncc
4202         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4203         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4204         _DEPFLAGS='-xM1 -xc99'
4205         _ldflags='-std=c99'
4206         _cflags_speed='-O5'
4207         _cflags_size='-O5 -xspace'
4208         _flags_filter=suncc_flags
4209     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4210         _type=pathscale
4211         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4212         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4213         _cflags_speed='-O2'
4214         _cflags_size='-Os'
4215         _flags_filter='filter_out -Wdisabled-optimization'
4216     elif $_cc -v 2>&1 | grep -q Open64; then
4217         _type=open64
4218         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4219         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4220         _cflags_speed='-O2'
4221         _cflags_size='-Os'
4222         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4223     elif $_cc -V 2>&1 | grep -q Portland; then
4224         _type=pgi
4225         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4226         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4227         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4228         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4229         _cflags_noopt="-O"
4230         _flags_filter=pgi_flags
4231     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4232         _type=armasm
4233         _ident=$($_cc | head -n1)
4234         # 4509: "This form of conditional instruction is deprecated"
4235         _flags="-nologo -ignore 4509"
4236         _flags_filter=armasm_flags
4237     elif $_cc 2>&1 | grep -q Intel; then
4238         _type=icl
4239         _ident=$($_cc 2>&1 | head -n1)
4240         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4241         # Not only is O3 broken on 13.x+ but it is slower on all previous
4242         # versions (tested) as well.
4243         _cflags_speed="-O2"
4244         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4245         if $_cc 2>&1 | grep -q Linker; then
4246             _ld_o='-out:$@'
4247         else
4248             _ld_o='-Fe$@'
4249         fi
4250         _cc_o='-Fo$@'
4251         _cc_e='-P'
4252         _flags_filter=icl_flags
4253         _ld_lib='lib%.a'
4254         _ld_path='-libpath:'
4255         # -Qdiag-error to make icl error when seeing certain unknown arguments
4256         _flags='-nologo -Qdiag-error:4044,10157'
4257         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4258         # with MSVC which enables it by default.
4259         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4260         disable stripping
4261     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4262         # lld can emulate multiple different linkers; in ms link.exe mode,
4263         # the -? parameter gives the help output which contains an identifyable
4264         # string, while it gives an error in other modes.
4265         _type=lld-link
4266         # The link.exe mode doesn't have a switch for getting the version,
4267         # but we can force it back to gnu mode and get the version from there.
4268         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4269         _ld_o='-out:$@'
4270         _flags_filter=msvc_flags
4271         _ld_lib='lib%.a'
4272         _ld_path='-libpath:'
4273     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4274         _type=msvc
4275         _ident=$($_cc 2>&1 | head -n1)
4276         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4277         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4278         _cflags_speed="-O2"
4279         _cflags_size="-O1"
4280         _cflags_noopt="-O1"
4281         if $_cc -nologo- 2>&1 | grep -q Linker; then
4282             _ld_o='-out:$@'
4283         else
4284             _ld_o='-Fe$@'
4285         fi
4286         _cc_o='-Fo$@'
4287         _cc_e='-P -Fi$@'
4288         _flags_filter=msvc_flags
4289         _ld_lib='lib%.a'
4290         _ld_path='-libpath:'
4291         _flags='-nologo'
4292         disable stripping
4293     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4294         _type=cparser
4295         _ident=$($_cc --version | head -n1)
4296         _depflags='-MMD'
4297         _cflags_speed='-O4'
4298         _cflags_size='-O2'
4299         _flags_filter=cparser_flags
4300     fi
4301
4302     eval ${pfx}_type=\$_type
4303     eval ${pfx}_ident=\$_ident
4304 }
4305
4306 set_ccvars(){
4307     eval ${1}_C=\${_cc_c-\${${1}_C}}
4308     eval ${1}_E=\${_cc_e-\${${1}_E}}
4309     eval ${1}_O=\${_cc_o-\${${1}_O}}
4310
4311     if [ -n "$_depflags" ]; then
4312         eval ${1}_DEPFLAGS=\$_depflags
4313     else
4314         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4315         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4316         eval DEP${1}FLAGS=\$_flags
4317     fi
4318 }
4319
4320 probe_cc cc "$cc" "true"
4321 cflags_filter=$_flags_filter
4322 cflags_speed=$_cflags_speed
4323 cflags_size=$_cflags_size
4324 cflags_noopt=$_cflags_noopt
4325 add_cflags $_flags $_cflags
4326 cc_ldflags=$_ldflags
4327 set_ccvars CC
4328 set_ccvars CXX
4329
4330 probe_cc hostcc "$host_cc"
4331 host_cflags_filter=$_flags_filter
4332 host_cflags_speed=$_cflags_speed
4333 add_host_cflags  $_flags $_cflags
4334 set_ccvars HOSTCC
4335
4336 test -n "$cc_type" && enable $cc_type ||
4337     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4338
4339 : ${as_default:=$cc}
4340 : ${objcc_default:=$cc}
4341 : ${dep_cc_default:=$cc}
4342 : ${ld_default:=$cc}
4343 : ${host_ld_default:=$host_cc}
4344 set_default ar as objcc dep_cc ld ln_s host_ld windres
4345
4346 probe_cc as "$as"
4347 asflags_filter=$_flags_filter
4348 add_asflags $_flags $_cflags
4349 set_ccvars AS
4350
4351 probe_cc objcc "$objcc"
4352 objcflags_filter=$_flags_filter
4353 add_objcflags $_flags $_cflags
4354 set_ccvars OBJC
4355
4356 probe_cc ld "$ld"
4357 ldflags_filter=$_flags_filter
4358 add_ldflags $_flags $_ldflags
4359 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4360 LD_O=${_ld_o-$LD_O}
4361 LD_LIB=${_ld_lib-$LD_LIB}
4362 LD_PATH=${_ld_path-$LD_PATH}
4363
4364 probe_cc hostld "$host_ld"
4365 host_ldflags_filter=$_flags_filter
4366 add_host_ldflags $_flags $_ldflags
4367 HOSTLD_O=${_ld_o-$HOSTLD_O}
4368
4369 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4370     probe_cc depcc "$dep_cc"
4371     CCDEP=${_DEPCMD:-$DEPCMD}
4372     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4373     DEPCCFLAGS=$_flags
4374 fi
4375
4376 if $ar 2>&1 | grep -q Microsoft; then
4377     arflags="-nologo"
4378     ar_o='-out:$@'
4379 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4380     arflags="rq"
4381     ar_o='$@'
4382 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4383     arflags='-Xany -r -c'
4384     ar_o='$@'
4385 elif $ar 2>&1 | grep -q "\[D\] "; then
4386     arflags="rcD"
4387     ar_o='$@'
4388 else
4389     arflags="rc"
4390     ar_o='$@'
4391 fi
4392
4393 add_cflags $extra_cflags
4394 add_cxxflags $extra_cxxflags
4395 add_objcflags $extra_objcflags
4396 add_asflags $extra_cflags
4397
4398 if test -n "$sysroot"; then
4399     case "$cc_type" in
4400         gcc|llvm_gcc|clang)
4401             add_cppflags --sysroot="$sysroot"
4402             add_ldflags --sysroot="$sysroot"
4403 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4404             add_cppflags -isysroot "$sysroot"
4405             add_ldflags -isysroot "$sysroot"
4406         ;;
4407         tms470)
4408             add_cppflags -I"$sysinclude"
4409             add_ldflags  --sysroot="$sysroot"
4410         ;;
4411     esac
4412 fi
4413
4414 if test "$cpu" = host; then
4415     enabled cross_compile &&
4416         die "--cpu=host makes no sense when cross-compiling."
4417
4418     case "$cc_type" in
4419         gcc|llvm_gcc)
4420             check_native(){
4421                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4422                 sed -n "/cc1.*$1=/{
4423                             s/.*$1=\\([^ ]*\\).*/\\1/
4424                             p
4425                             q
4426                         }" $TMPE
4427             }
4428             cpu=$(check_native -march || check_native -mcpu)
4429         ;;
4430         clang)
4431             check_native(){
4432                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4433                 sed -n "/cc1.*-target-cpu /{
4434                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4435                             p
4436                             q
4437                         }" $TMPE
4438             }
4439             cpu=$(check_native -march)
4440         ;;
4441     esac
4442
4443     test "${cpu:-host}" = host &&
4444         die "--cpu=host not supported with compiler $cc"
4445 fi
4446
4447 # Deal with common $arch aliases
4448 case "$arch" in
4449     aarch64|arm64)
4450         arch="aarch64"
4451     ;;
4452     arm*|iPad*|iPhone*)
4453         arch="arm"
4454     ;;
4455     mips*|IP*)
4456         case "$arch" in
4457         *el)
4458             add_cppflags -EL
4459             add_ldflags -EL
4460         ;;
4461         *eb)
4462             add_cppflags -EB
4463             add_ldflags -EB
4464         ;;
4465         esac
4466         arch="mips"
4467     ;;
4468     parisc*|hppa*)
4469         arch="parisc"
4470     ;;
4471     "Power Macintosh"|ppc*|powerpc*)
4472         arch="ppc"
4473     ;;
4474     s390|s390x)
4475         arch="s390"
4476     ;;
4477     sh4|sh)
4478         arch="sh4"
4479     ;;
4480     sun4*|sparc*)
4481         arch="sparc"
4482     ;;
4483     tilegx|tile-gx)
4484         arch="tilegx"
4485     ;;
4486     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4487         arch="x86"
4488     ;;
4489 esac
4490
4491 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4492 enable $arch
4493
4494 # Add processor-specific flags
4495 if enabled aarch64; then
4496
4497     case $cpu in
4498         armv*)
4499             cpuflags="-march=$cpu"
4500         ;;
4501         *)
4502             cpuflags="-mcpu=$cpu"
4503         ;;
4504     esac
4505
4506 elif enabled alpha; then
4507
4508     cpuflags="-mcpu=$cpu"
4509
4510 elif enabled arm; then
4511
4512     check_arm_arch() {
4513         check_cpp_condition stddef.h \
4514             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4515             $cpuflags
4516     }
4517
4518     probe_arm_arch() {
4519         if   check_arm_arch 4;        then echo armv4
4520         elif check_arm_arch 4T;       then echo armv4t
4521         elif check_arm_arch 5;        then echo armv5
4522         elif check_arm_arch 5E;       then echo armv5e
4523         elif check_arm_arch 5T;       then echo armv5t
4524         elif check_arm_arch 5TE;      then echo armv5te
4525         elif check_arm_arch 5TEJ;     then echo armv5te
4526         elif check_arm_arch 6;        then echo armv6
4527         elif check_arm_arch 6J;       then echo armv6j
4528         elif check_arm_arch 6K;       then echo armv6k
4529         elif check_arm_arch 6Z;       then echo armv6z
4530         elif check_arm_arch 6ZK;      then echo armv6zk
4531         elif check_arm_arch 6T2;      then echo armv6t2
4532         elif check_arm_arch 7;        then echo armv7
4533         elif check_arm_arch 7A  7_A;  then echo armv7-a
4534         elif check_arm_arch 7S;       then echo armv7-a
4535         elif check_arm_arch 7R  7_R;  then echo armv7-r
4536         elif check_arm_arch 7M  7_M;  then echo armv7-m
4537         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4538         elif check_arm_arch 8A  8_A;  then echo armv8-a
4539         fi
4540     }
4541
4542     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4543
4544     case $cpu in
4545         armv*)
4546             cpuflags="-march=$cpu"
4547             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4548         ;;
4549         *)
4550             cpuflags="-mcpu=$cpu"
4551             case $cpu in
4552                 cortex-a*)                               subarch=armv7a  ;;
4553                 cortex-r*)                               subarch=armv7r  ;;
4554                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4555                 arm11*)                                  subarch=armv6   ;;
4556                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4557                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4558                 *)                             subarch=$(probe_arm_arch) ;;
4559             esac
4560         ;;
4561     esac
4562
4563     case "$subarch" in
4564         armv5t*)    enable fast_clz                ;;
4565         armv[6-8]*)
4566             enable fast_clz
4567             disabled fast_unaligned || enable fast_unaligned
4568             ;;
4569     esac
4570
4571 elif enabled avr32; then
4572
4573     case $cpu in
4574         ap7[02]0[0-2])
4575             subarch="avr32_ap"
4576             cpuflags="-mpart=$cpu"
4577         ;;
4578         ap)
4579             subarch="avr32_ap"
4580             cpuflags="-march=$cpu"
4581         ;;
4582         uc3[ab]*)
4583             subarch="avr32_uc"
4584             cpuflags="-mcpu=$cpu"
4585         ;;
4586         uc)
4587             subarch="avr32_uc"
4588             cpuflags="-march=$cpu"
4589         ;;
4590     esac
4591
4592 elif enabled bfin; then
4593
4594     cpuflags="-mcpu=$cpu"
4595
4596 elif enabled mips; then
4597
4598     cpuflags="-march=$cpu"
4599
4600     if [ "$cpu" != "generic" ]; then
4601         disable mips32r2
4602         disable mips32r5
4603         disable mips64r2
4604         disable mips32r6
4605         disable mips64r6
4606         disable loongson2
4607         disable loongson3
4608
4609         case $cpu in
4610             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4611                 enable mips32r2
4612                 disable msa
4613             ;;
4614             p5600|i6400|p6600)
4615                 disable mipsdsp
4616                 disable mipsdspr2
4617             ;;
4618             loongson*)
4619                 enable loongson2
4620                 enable loongson3
4621                 enable local_aligned_8 local_aligned_16 local_aligned_32
4622                 enable simd_align_16
4623                 enable fast_64bit
4624                 enable fast_clz
4625                 enable fast_cmov
4626                 enable fast_unaligned
4627                 disable aligned_stack
4628                 disable mipsfpu
4629                 disable mipsdsp
4630                 disable mipsdspr2
4631                 case $cpu in
4632                     loongson3*)
4633                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4634                     ;;
4635                     loongson2e)
4636                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4637                     ;;
4638                     loongson2f)
4639                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4640                     ;;
4641                 esac
4642             ;;
4643             *)
4644                 # Unknown CPU. Disable everything.
4645                 warn "unknown CPU. Disabling all MIPS optimizations."
4646                 disable mipsfpu
4647                 disable mipsdsp
4648                 disable mipsdspr2
4649                 disable msa
4650                 disable mmi
4651             ;;
4652         esac
4653
4654         case $cpu in
4655             24kc)
4656                 disable mipsfpu
4657                 disable mipsdsp
4658                 disable mipsdspr2
4659             ;;
4660             24kf*)
4661                 disable mipsdsp
4662                 disable mipsdspr2
4663             ;;
4664             24kec|34kc|1004kc)
4665                 disable mipsfpu
4666                 disable mipsdspr2
4667             ;;
4668             24kef*|34kf*|1004kf*)
4669                 disable mipsdspr2
4670             ;;
4671             74kc)
4672                 disable mipsfpu
4673             ;;
4674             p5600)
4675                 enable mips32r5
4676                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4677             ;;
4678             i6400)
4679                 enable mips64r6
4680                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4681             ;;
4682             p6600)
4683                 enable mips64r6
4684                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4685             ;;
4686         esac
4687     else
4688         # We do not disable anything. Is up to the user to disable the unwanted features.
4689         warn 'generic cpu selected'
4690     fi
4691
4692 elif enabled ppc; then
4693
4694     disable ldbrx
4695
4696     case $(tolower $cpu) in
4697         601|ppc601|powerpc601)
4698             cpuflags="-mcpu=601"
4699             disable altivec
4700         ;;
4701         603*|ppc603*|powerpc603*)
4702             cpuflags="-mcpu=603"
4703             disable altivec
4704         ;;
4705         604*|ppc604*|powerpc604*)
4706             cpuflags="-mcpu=604"
4707             disable altivec
4708         ;;
4709         g3|75*|ppc75*|powerpc75*)
4710             cpuflags="-mcpu=750"
4711             disable altivec
4712         ;;
4713         g4|745*|ppc745*|powerpc745*)
4714             cpuflags="-mcpu=7450"
4715             disable vsx
4716         ;;
4717         74*|ppc74*|powerpc74*)
4718             cpuflags="-mcpu=7400"
4719             disable vsx
4720         ;;
4721         g5|970|ppc970|powerpc970)
4722             cpuflags="-mcpu=970"
4723             disable vsx
4724         ;;
4725         power[3-6]*)
4726             cpuflags="-mcpu=$cpu"
4727             disable vsx
4728         ;;
4729         power[7-8]*)
4730             cpuflags="-mcpu=$cpu"
4731         ;;
4732         cell)
4733             cpuflags="-mcpu=cell"
4734             enable ldbrx
4735             disable vsx
4736         ;;
4737         e500mc)
4738             cpuflags="-mcpu=e500mc"
4739             disable altivec
4740         ;;
4741         e500v2)
4742             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4743             disable altivec
4744             disable dcbzl
4745         ;;
4746         e500)
4747             cpuflags="-mcpu=8540 -mhard-float"
4748             disable altivec
4749             disable dcbzl
4750         ;;
4751     esac
4752
4753 elif enabled sparc; then
4754
4755     case $cpu in
4756         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4757             cpuflags="-mcpu=$cpu"
4758         ;;
4759         ultrasparc*|niagara[234])
4760             cpuflags="-mcpu=$cpu"
4761         ;;
4762     esac
4763
4764 elif enabled x86; then
4765
4766     case $cpu in
4767         i[345]86|pentium)
4768             cpuflags="-march=$cpu"
4769             disable i686
4770             disable mmx
4771         ;;
4772         # targets that do NOT support nopl and conditional mov (cmov)
4773         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4774             cpuflags="-march=$cpu"
4775             disable i686
4776         ;;
4777         # targets that do support nopl and conditional mov (cmov)
4778         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4779         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4780         |amdfam10|barcelona|b[dt]ver*|znver*)
4781             cpuflags="-march=$cpu"
4782             enable i686
4783             enable fast_cmov
4784         ;;
4785         # targets that do support conditional mov but on which it's slow
4786         pentium4|pentium4m|prescott|nocona)
4787             cpuflags="-march=$cpu"
4788             enable i686
4789             disable fast_cmov
4790         ;;
4791     esac
4792
4793 fi
4794
4795 if [ "$cpu" != generic ]; then
4796     add_cflags  $cpuflags
4797     add_asflags $cpuflags
4798     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4799 fi
4800
4801 # compiler sanity check
4802 check_exec <<EOF
4803 int main(void){ return 0; }
4804 EOF
4805 if test "$?" != 0; then
4806     echo "$cc is unable to create an executable file."
4807     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4808         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4809         echo "Only do this if you know what cross compiling means."
4810     fi
4811     die "C compiler test failed."
4812 fi
4813
4814 add_cppflags -D_ISOC99_SOURCE
4815 add_cxxflags -D__STDC_CONSTANT_MACROS
4816 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4817
4818 # some compilers silently accept -std=c11, so we also need to check that the
4819 # version macro is defined properly
4820 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4821     add_cflags -std=c11
4822 else
4823     check_cflags -std=c99
4824 fi
4825
4826 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4827 #include <stdlib.h>
4828 EOF
4829 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4830 #include <stdlib.h>
4831 EOF
4832
4833 add_host_cppflags -D_ISOC99_SOURCE
4834 check_host_cflags -std=c99
4835 check_host_cflags -Wall
4836 check_host_cflags $host_cflags_speed
4837
4838 check_64bit(){
4839     arch32=$1
4840     arch64=$2
4841     expr=$3
4842     check_code cc "" "int test[2*($expr) - 1]" &&
4843         subarch=$arch64 || subarch=$arch32
4844 }
4845
4846 case "$arch" in
4847     aarch64|alpha|ia64)
4848         spic=$shared
4849     ;;
4850     mips)
4851         check_64bit mips mips64 '_MIPS_SIM > 1'
4852         spic=$shared
4853     ;;
4854     parisc)
4855         check_64bit parisc parisc64 'sizeof(void *) > 4'
4856         spic=$shared
4857     ;;
4858     ppc)
4859         check_64bit ppc ppc64 'sizeof(void *) > 4'
4860         spic=$shared
4861     ;;
4862     s390)
4863         check_64bit s390 s390x 'sizeof(void *) > 4'
4864         spic=$shared
4865     ;;
4866     sparc)
4867         check_64bit sparc sparc64 'sizeof(void *) > 4'
4868         spic=$shared
4869     ;;
4870     x86)
4871         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4872         # Treat x32 as x64 for now. Note it also needs spic=$shared
4873         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4874             subarch=x86_64
4875         if test "$subarch" = "x86_64"; then
4876             spic=$shared
4877         fi
4878     ;;
4879     ppc)
4880         check_cc <<EOF && subarch="ppc64"
4881         int test[(int)sizeof(char*) - 7];
4882 EOF
4883     ;;
4884 esac
4885
4886 enable $subarch
4887 enabled spic && enable_weak pic
4888
4889 enabled x86_64 && objformat=elf64 || objformat="elf32"
4890
4891 # OS specific
4892 case $target_os in
4893     aix)
4894         SHFLAGS=-shared
4895         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4896         enabled shared && add_ldflags -Wl,-brtl
4897         ;;
4898     android)
4899         disable symver
4900         enable section_data_rel_ro
4901         SLIB_INSTALL_NAME='$(SLIBNAME)'
4902         SLIB_INSTALL_LINKS=
4903         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4904         ;;
4905     haiku)
4906         prefix_default="/boot/common"
4907         network_extralibs="-lnetwork"
4908         host_extralibs=
4909         ;;
4910     sunos)
4911         SHFLAGS='-shared -Wl,-h,$$(@F)'
4912         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4913         network_extralibs="-lsocket -lnsl"
4914         add_cppflags -D__EXTENSIONS__
4915         # When using suncc to build, the Solaris linker will mark
4916         # an executable with each instruction set encountered by
4917         # the Solaris assembler.  As our libraries contain their own
4918         # guards for processor-specific code, instead suppress
4919         # generation of the HWCAPS ELF section on Solaris x86 only.
4920         enabled_all suncc x86 &&
4921             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4922             add_ldflags -Wl,-M,mapfile
4923         nm_default='nm -P -g'
4924         version_script='-M'
4925         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4926         ;;
4927     netbsd)
4928         disable symver
4929         oss_indev_extralibs="-lossaudio"
4930         oss_outdev_extralibs="-lossaudio"
4931         enabled gcc || check_ldflags -Wl,-zmuldefs
4932         ;;
4933     openbsd|bitrig)
4934         disable symver
4935         SHFLAGS='-shared'
4936         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4937         SLIB_INSTALL_LINKS=
4938         oss_indev_extralibs="-lossaudio"
4939         oss_outdev_extralibs="-lossaudio"
4940         ;;
4941     dragonfly)
4942         disable symver
4943         ;;
4944     freebsd)
4945         ;;
4946     bsd/os)
4947         add_extralibs -lpoll -lgnugetopt
4948         strip="strip -d"
4949         ;;
4950     darwin)
4951         enabled ppc && add_asflags -force_cpusubtype_ALL
4952         install_name_dir_default='$(SHLIBDIR)'
4953         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4954         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4955         strip="${strip} -x"
4956         add_ldflags -Wl,-dynamic,-search_paths_first
4957         SLIBSUF=".dylib"
4958         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4959         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4960         objformat="macho"
4961         enabled x86_64 && objformat="macho64" || objformat="macho32"
4962         enabled_any pic shared x86_64 ||
4963             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4964         check_header dispatch/dispatch.h &&
4965             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4966         version_script='-exported_symbols_list'
4967         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4968         ;;
4969     msys*)
4970         die "Native MSYS builds are discouraged, please use the MINGW environment."
4971         ;;
4972     mingw32*|mingw64*)
4973         if test $target_os = "mingw32ce"; then
4974             disable network
4975         else
4976             target_os=mingw32
4977         fi
4978         LIBTARGET=i386
4979         if enabled x86_64; then
4980             LIBTARGET="i386:x86-64"
4981         elif enabled arm; then
4982             LIBTARGET=arm-wince
4983         fi
4984         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4985         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4986         shlibdir_default="$bindir_default"
4987         SLIBPREF=""
4988         SLIBSUF=".dll"
4989         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4990         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4991         dlltool="${cross_prefix}dlltool"
4992         if check_cmd lib.exe -list; then
4993             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4994             if enabled x86_64; then
4995                 LIBTARGET=x64
4996             fi
4997         elif check_cmd $dlltool --version; then
4998             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4999         fi
5000         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5001         SLIB_INSTALL_LINKS=
5002         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5003         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5004         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5005         enabled x86_64 && objformat="win64" || objformat="win32"
5006         ranlib=:
5007         enable dos_paths
5008         check_ldflags -Wl,--nxcompat,--dynamicbase
5009         # Lets work around some stupidity in binutils.
5010         # ld will strip relocations from executables even though we need them
5011         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5012         # however ld then forgets what the entry point should be (oops) so we
5013         # have to manually (re)set it.
5014         if enabled x86_32; then
5015             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5016         elif enabled x86_64; then
5017             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5018             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5019             # Set image base >4GB for extra entropy with HEASLR
5020             add_ldexeflags -Wl,--image-base,0x140000000
5021             append SHFLAGS -Wl,--image-base,0x180000000
5022         fi
5023         ;;
5024     win32|win64)
5025         disable symver
5026         if enabled shared; then
5027             # Link to the import library instead of the normal static library
5028             # for shared libs.
5029             LD_LIB='%.lib'
5030             # Cannot build both shared and static libs with MSVC or icl.
5031             disable static
5032         fi
5033         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5034         shlibdir_default="$bindir_default"
5035         SLIBPREF=""
5036         SLIBSUF=".dll"
5037         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5038         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5039         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5040         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5041         SLIB_INSTALL_LINKS=
5042         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5043         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5044         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5045         enabled x86_64 && objformat="win64" || objformat="win32"
5046         ranlib=:
5047         enable dos_paths
5048         ;;
5049     cygwin*)
5050         target_os=cygwin
5051         shlibdir_default="$bindir_default"
5052         SLIBPREF="cyg"
5053         SLIBSUF=".dll"
5054         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5055         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5056         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5057         SLIB_INSTALL_LINKS=
5058         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5059         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5060         enabled x86_64 && objformat="win64" || objformat="win32"
5061         enable dos_paths
5062         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5063         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5064         ;;
5065     *-dos|freedos|opendos)
5066         network_extralibs="-lsocket"
5067         objformat="coff"
5068         enable dos_paths
5069         add_cppflags -U__STRICT_ANSI__
5070         ;;
5071     linux)
5072         enable dv1394
5073         enable section_data_rel_ro
5074         enabled_any arm aarch64 && enable_weak linux_perf
5075         ;;
5076     irix*)
5077         target_os=irix
5078         ranlib="echo ignoring ranlib"
5079         ;;
5080     os/2*)
5081         strip="lxlite -CS"
5082         objformat="aout"
5083         add_cppflags -D_GNU_SOURCE
5084         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5085         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5086         LIBSUF="_s.a"
5087         SLIBPREF=""
5088         SLIBSUF=".dll"
5089         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5090         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5091         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5092             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5093             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5094             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5095             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5096         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5097             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5098         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5099         SLIB_INSTALL_LINKS=
5100         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5101         enable dos_paths
5102         enable_weak os2threads
5103         ;;
5104     gnu/kfreebsd)
5105         add_cppflags -D_BSD_SOURCE
5106         ;;
5107     gnu)
5108         ;;
5109     qnx)
5110         add_cppflags -D_QNX_SOURCE
5111         network_extralibs="-lsocket"
5112         ;;
5113     symbian)
5114         SLIBSUF=".dll"
5115         enable dos_paths
5116         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5117         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5118         add_ldflags -Wl,--target1-abs,--no-undefined \
5119                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5120                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5121         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5122                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5123                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5124         ;;
5125     osf1)
5126         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5127         ;;
5128     minix)
5129         ;;
5130     none)
5131         ;;
5132     *)
5133         die "Unknown OS '$target_os'."
5134         ;;
5135 esac
5136
5137 # test if creating links works
5138 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5139 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5140 mkdir "$link_dest"
5141 $ln_s "$link_dest" "$link_name"
5142 touch "$link_dest/test_file"
5143 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5144     # create link to source path
5145     [ -e src ] && rm src
5146     $ln_s "$source_path" src
5147     source_link=src
5148 else
5149     # creating directory links doesn't work
5150     # fall back to using the full source path
5151     source_link="$source_path"
5152 fi
5153 # cleanup
5154 rm -r "$link_dest"
5155 rm -r "$link_name"
5156
5157 # determine libc flavour
5158
5159 probe_libc(){
5160     pfx=$1
5161     pfx_no_=${pfx%_}
5162     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5163     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5164         eval ${pfx}libc_type=uclibc
5165         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5166     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5167         eval ${pfx}libc_type=glibc
5168         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5169     # MinGW headers can be installed on Cygwin, so check for newlib first.
5170     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5171         eval ${pfx}libc_type=newlib
5172         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5173     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5174     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5175         eval ${pfx}libc_type=mingw64
5176         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5177             add_compat msvcrt/snprintf.o
5178             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5179         fi
5180         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5181         eval test \$${pfx_no_}cc_type = "gcc" &&
5182             add_${pfx}cppflags -D__printf__=__gnu_printf__
5183     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5184          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5185         eval ${pfx}libc_type=mingw32
5186         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5187             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5188             die "ERROR: MinGW32 runtime version must be >= 3.15."
5189         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5190         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5191             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5192         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5193             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5194         eval test \$${pfx_no_}cc_type = "gcc" &&
5195             add_${pfx}cppflags -D__printf__=__gnu_printf__
5196     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5197         eval ${pfx}libc_type=msvcrt
5198         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5199             if [ "$pfx" = host_ ]; then
5200                 add_host_cppflags -Dsnprintf=_snprintf
5201             else
5202                 add_compat strtod.o strtod=avpriv_strtod
5203                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5204                                              _snprintf=avpriv_snprintf  \
5205                                              vsnprintf=avpriv_vsnprintf
5206             fi
5207         fi
5208         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5209         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5210         # 0x601 by default unless something else is set by the user.
5211         # This can easily lead to us detecting functions only present
5212         # in such new versions and producing binaries requiring windows 7.0.
5213         # Therefore explicitly set the default to XP unless the user has
5214         # set something else on the command line.
5215         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5216         # family. For these cases, configure is free to use any functions
5217         # found in the SDK headers by default. (Alternatively, we could force
5218         # _WIN32_WINNT to 0x0602 in that case.)
5219         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5220             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5221 #ifdef WINAPI_FAMILY
5222 #include <winapifamily.h>
5223 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5224 #error not desktop
5225 #endif
5226 #endif
5227 EOF
5228         if [ "$pfx" = "" ]; then
5229             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5230             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5231         fi
5232     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5233         eval ${pfx}libc_type=klibc
5234     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5235         eval ${pfx}libc_type=bionic
5236     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5237         eval ${pfx}libc_type=solaris
5238         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5239     fi
5240     check_${pfx}cc <<EOF
5241 #include <time.h>
5242 void *v = localtime_r;
5243 EOF
5244 test "$?" != 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
5245 #include <time.h>
5246 void *v = localtime_r;
5247 EOF
5248
5249 }
5250
5251 probe_libc
5252 test -n "$libc_type" && enable libc_$libc_type
5253 probe_libc host_
5254 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5255
5256 # hacks for compiler/libc/os combinations
5257
5258 case $libc_type in
5259     bionic)
5260         add_compat strtod.o strtod=avpriv_strtod
5261         ;;
5262     glibc)
5263         if enabled tms470; then
5264             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5265             add_cppflags -D__USER_LABEL_PREFIX__=
5266             add_cppflags -D__builtin_memset=memset
5267             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5268             add_cflags   -pds=48    # incompatible redefinition of macro
5269         elif enabled ccc; then
5270             add_ldflags -Wl,-z,now  # calls to libots crash without this
5271         fi
5272         ;;
5273 esac
5274
5275 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5276     add_cppflags '-I\$(SRC_PATH)/compat/float'
5277
5278 esc(){
5279     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5280 }
5281
5282 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5283
5284 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5285
5286 set_default libdir
5287 : ${shlibdir_default:="$libdir"}
5288 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5289
5290 set_default $PATHS_LIST
5291 set_default nm
5292
5293 # we need to build at least one lib type
5294 if ! enabled_any static shared; then
5295     cat <<EOF
5296 At least one library type must be built.
5297 Specify --enable-static to build the static libraries or --enable-shared to
5298 build the shared libraries as well. To only build the shared libraries specify
5299 --disable-static in addition to --enable-shared.
5300 EOF
5301     exit 1
5302 fi
5303
5304 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5305
5306 enable_weak_pic() {
5307     disabled pic && return
5308     enable pic
5309     add_cppflags -DPIC
5310     case "$target_os" in
5311     mingw*|cygwin*)
5312         ;;
5313     *)
5314         add_cflags -fPIC
5315         ;;
5316     esac
5317     add_asflags  -fPIC
5318 }
5319
5320 enabled pic && enable_weak_pic
5321
5322 check_cc <<EOF || die "Symbol mangling check failed."
5323 int ff_extern;
5324 EOF
5325 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5326 extern_prefix=${sym%%ff_extern*}
5327
5328 check_inline_asm inline_asm '"" ::'
5329
5330 _restrict=
5331 for restrict_keyword in restrict __restrict__ __restrict; do
5332     check_cc <<EOF && _restrict=$restrict_keyword && break
5333 void foo(char * $restrict_keyword p);
5334 EOF
5335 done
5336
5337 check_cc <<EOF && enable pragma_deprecated
5338 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5339 EOF
5340
5341 check_cc <<EOF && enable attribute_packed
5342 struct { int x; } __attribute__((packed)) x;
5343 EOF
5344
5345 check_cc <<EOF && enable attribute_may_alias
5346 union { int x; } __attribute__((may_alias)) x;
5347 EOF
5348
5349 check_cc <<EOF || die "endian test failed"
5350 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5351 EOF
5352 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5353
5354 check_cc <<EOF && enable const_nan
5355 #include <math.h>
5356 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5357 EOF
5358
5359 if ! enabled ppc64 || enabled bigendian; then
5360     disable vsx
5361 fi
5362
5363 check_gas() {
5364     log "check_gas using '$as' as AS"
5365     # :vararg is used on aarch64, arm and ppc altivec
5366     check_as <<EOF || return 1
5367 .macro m n, y:vararg=0
5368 \n: .int \y
5369 .endm
5370 m x
5371 EOF
5372     # .altmacro is only used in arm asm
5373     ! enabled arm || check_as <<EOF || return 1
5374 .altmacro
5375 EOF
5376     enable gnu_as
5377     return 0
5378 }
5379
5380 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5381     nogas=:
5382     enabled_any arm aarch64 && nogas=die
5383     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5384     as_noop=-v
5385
5386     case $as_type in
5387         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5388         gcc)  gaspp_as_type=gas ;;
5389         *)    gaspp_as_type=$as_type ;;
5390     esac
5391
5392     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5393
5394     test "${as#*gas-preprocessor.pl}" != "$as" ||
5395     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5396         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5397
5398     if ! check_gas ; then
5399         as=${gas:=$as}
5400         check_gas || \
5401             $nogas "GNU assembler not found, install/update gas-preprocessor"
5402     fi
5403
5404     check_as <<EOF && enable as_func
5405 .func test
5406 .endfunc
5407 EOF
5408 fi
5409
5410 check_inline_asm inline_asm_labels '"1:\n"'
5411
5412 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5413
5414 if enabled aarch64; then
5415     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5416     # internal assembler in clang 3.3 does not support this instruction
5417     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5418     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5419
5420     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5421
5422 elif enabled alpha; then
5423
5424     check_cflags -mieee
5425
5426 elif enabled arm; then
5427
5428     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5429
5430     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5431 float func(float a, float b){ return a+b; }
5432 EOF
5433
5434     enabled thumb && check_cflags -mthumb || check_cflags -marm
5435
5436     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5437         enable vfp_args
5438     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5439         enable vfp_args
5440     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5441         case "${cross_prefix:-$cc}" in
5442             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5443             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5444 __asm__ (".eabi_attribute 28, 1");
5445 int main(void) { return 0; }
5446 EOF
5447         esac
5448         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5449     fi
5450
5451     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5452     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5453     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5454     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5455     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5456     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5457     enabled setend  && check_insn setend  'setend be'
5458
5459     [ $target_os = linux ] || [ $target_os = android ] ||
5460         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5461             $ARCH_EXT_LIST_ARM
5462
5463     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5464
5465     check_as <<EOF && enable as_dn_directive
5466 ra .dn d0.i16
5467 .unreq ra
5468 EOF
5469     check_as <<EOF && enable as_fpu_directive
5470 .fpu neon
5471 EOF
5472
5473     # llvm's integrated assembler supports .object_arch from llvm 3.5
5474     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5475         check_as <<EOF && enable as_object_arch
5476 .object_arch armv4
5477 EOF
5478
5479     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5480
5481 elif enabled mips; then
5482
5483     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5484     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5485     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5486
5487     # Enable minimum ISA based on selected options
5488     if enabled mips64; then
5489         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5490         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5491         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5492     else
5493         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5494         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5495         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5496         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5497     fi
5498
5499     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5500     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5501     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5502     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5503     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5504
5505     if enabled bigendian && enabled msa; then
5506         disable msa
5507     fi
5508
5509 elif enabled parisc; then
5510
5511     if enabled gcc; then
5512         case $($cc -dumpversion) in
5513             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5514         esac
5515     fi
5516
5517 elif enabled ppc; then
5518
5519     enable local_aligned_8 local_aligned_16 local_aligned_32
5520
5521     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5522     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5523     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5524     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5525
5526     # AltiVec flags: The FSF version of GCC differs from the Apple version
5527     if enabled altivec; then
5528         check_cflags -maltivec -mabi=altivec &&
5529         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5530         check_cflags -faltivec
5531
5532         # check if our compiler supports Motorola AltiVec C API
5533         check_cc <<EOF || disable altivec
5534 $inc_altivec_h
5535 int main(void) {
5536     vector signed int v1 = (vector signed int) { 0 };
5537     vector signed int v2 = (vector signed int) { 1 };
5538     v1 = vec_add(v1, v2);
5539     return 0;
5540 }
5541 EOF
5542
5543         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5544     fi
5545
5546     if enabled vsx; then
5547         check_cflags -mvsx &&
5548         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5549     fi
5550
5551     if enabled power8; then
5552         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5553     fi
5554
5555 elif enabled x86; then
5556
5557     check_builtin rdtsc    intrin.h   "__rdtsc()"
5558     check_builtin mm_empty mmintrin.h "_mm_empty()"
5559
5560     enable local_aligned_8 local_aligned_16 local_aligned_32
5561
5562     # check whether EBP is available on x86
5563     # As 'i' is stored on the stack, this program will crash
5564     # if the base pointer is used to access it because the
5565     # base pointer is cleared in the inline assembly code.
5566     check_exec_crash <<EOF && enable ebp_available
5567 volatile int i=0;
5568 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5569 return i;
5570 EOF
5571
5572     # check whether EBX is available on x86
5573     check_inline_asm ebx_available '""::"b"(0)' &&
5574         check_inline_asm ebx_available '"":::"%ebx"'
5575
5576     # check whether xmm clobbers are supported
5577     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5578
5579     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5580         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5581
5582     # check whether binutils is new enough to compile SSSE3/MMXEXT
5583     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5584     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5585
5586     probe_x86asm(){
5587         x86asmexe_probe=$1
5588         if check_cmd $x86asmexe_probe -v; then
5589             x86asmexe=$x86asmexe_probe
5590             x86asm_type=nasm
5591             x86asm_debug="-g -F dwarf"
5592         elif check_cmd $x86asmexe_probe --version; then
5593             x86asmexe=$x86asmexe_probe
5594             x86asm_type=yasm
5595             x86asm_debug="-g dwarf2"
5596         fi
5597         check_x86asm "movbe ecx, [5]" && enable x86asm
5598     }
5599
5600     if ! disabled_any asm mmx x86asm; then
5601         disable x86asm
5602         for program in $x86asmexe nasm yasm; do
5603             probe_x86asm $program && break
5604         done
5605         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5606         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5607         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5608         X86ASMFLAGS="-f $objformat"
5609         enabled pic               && append X86ASMFLAGS "-DPIC"
5610         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5611         case "$objformat" in
5612             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5613         esac
5614
5615         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5616         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5617         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5618         check_x86asm "CPU amdnop" || disable cpunop
5619     fi
5620
5621     case "$cpu" in
5622         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5623             disable fast_clz
5624         ;;
5625     esac
5626
5627 fi
5628
5629 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5630
5631 check_ldflags -Wl,--as-needed
5632 check_ldflags -Wl,-z,noexecstack
5633
5634 if check_func dlopen && check_func dlsym; then
5635     ldl=
5636 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5637     ldl=-ldl
5638 fi
5639
5640 avisynth_demuxer_extralibs='$ldl'
5641 cuda_extralibs='$ldl'
5642 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5643 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5644 libndi_newtek_outdev_extralibs="$libndi_newtek_outdev_extralibs $ldl"
5645 libndi_newtek_indev_extralibs="$libndi_newtek_indev_extralibs $ldl"
5646 frei0r_filter_extralibs='$ldl'
5647 frei0r_src_filter_extralibs='$ldl'
5648 ladspa_filter_extralibs='$ldl'
5649 nvenc_extralibs='$ldl'
5650
5651 if ! disabled network; then
5652     check_func getaddrinfo $network_extralibs
5653     check_func inet_aton $network_extralibs
5654
5655     check_type netdb.h "struct addrinfo"
5656     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5657     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5658     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5659     check_type poll.h "struct pollfd"
5660     check_type netinet/sctp.h "struct sctp_event_subscribe"
5661     check_struct "sys/socket.h" "struct msghdr" msg_flags
5662     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5663     check_type netinet/in.h "struct sockaddr_in6"
5664     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5665     check_type "sys/types.h sys/socket.h" socklen_t
5666
5667     # Prefer arpa/inet.h over winsock2
5668     if check_header arpa/inet.h ; then
5669         check_func closesocket
5670     elif check_header winsock2.h ; then
5671         check_func_headers winsock2.h closesocket -lws2 &&
5672             network_extralibs="-lws2" ||
5673         { check_func_headers winsock2.h closesocket -lws2_32 &&
5674             network_extralibs="-lws2_32"; } || disable winsock2_h network
5675         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5676
5677         check_type ws2tcpip.h socklen_t
5678         check_type ws2tcpip.h "struct addrinfo"
5679         check_type ws2tcpip.h "struct group_source_req"
5680         check_type ws2tcpip.h "struct ip_mreq_source"
5681         check_type ws2tcpip.h "struct ipv6_mreq"
5682         check_type winsock2.h "struct pollfd"
5683         check_struct winsock2.h "struct sockaddr" sa_len
5684         check_type ws2tcpip.h "struct sockaddr_in6"
5685         check_type ws2tcpip.h "struct sockaddr_storage"
5686     else
5687         disable network
5688     fi
5689 fi
5690
5691 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5692 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5693 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5694 check_builtin sarestart signal.h "SA_RESTART"
5695 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5696 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5697 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5698 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5699 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5700
5701 case "$custom_allocator" in
5702     jemalloc)
5703         # jemalloc by default does not use a prefix
5704         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5705     ;;
5706     tcmalloc)
5707         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5708         malloc_prefix=tc_
5709     ;;
5710 esac
5711
5712 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5713 check_func  ${malloc_prefix}memalign            && enable memalign
5714 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5715
5716 check_func  access
5717 check_func_headers stdlib.h arc4random
5718 check_func_headers time.h clock_gettime ||
5719     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5720 check_func  fcntl
5721 check_func  fork
5722 check_func  gethrtime
5723 check_func  getopt
5724 check_func  getrusage
5725 check_func  gettimeofday
5726 check_func  isatty
5727 check_func  mach_absolute_time
5728 check_func  mkstemp
5729 check_func  mmap
5730 check_func  mprotect
5731 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5732 check_func_headers time.h nanosleep ||
5733     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5734 check_func  sched_getaffinity
5735 check_func  setrlimit
5736 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5737 check_func  strerror_r
5738 check_func  sysconf
5739 check_func  sysctl
5740 check_func  usleep
5741
5742 check_func_headers conio.h kbhit
5743 check_func_headers io.h setmode
5744 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5745 check_func_headers stdlib.h getenv
5746 check_func_headers sys/stat.h lstat
5747
5748 check_func_headers windows.h GetProcessAffinityMask
5749 check_func_headers windows.h GetProcessTimes
5750 check_func_headers windows.h GetSystemTimeAsFileTime
5751 check_func_headers windows.h LoadLibrary
5752 check_func_headers windows.h MapViewOfFile
5753 check_func_headers windows.h PeekNamedPipe
5754 check_func_headers windows.h SetConsoleTextAttribute
5755 check_func_headers windows.h SetConsoleCtrlHandler
5756 check_func_headers windows.h Sleep
5757 check_func_headers windows.h VirtualAlloc
5758 check_struct windows.h "CONDITION_VARIABLE" Ptr
5759 check_func_headers glob.h glob
5760 enabled xlib &&
5761     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5762
5763 check_header d3d11.h
5764 check_header direct.h
5765 check_header dirent.h
5766 check_header dlfcn.h
5767 check_header dxgidebug.h
5768 check_header dxva.h
5769 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5770 check_header io.h
5771 check_header libcrystalhd/libcrystalhd_if.h
5772 check_header mach/mach_time.h
5773 check_header malloc.h
5774 check_header net/udplite.h
5775 check_header poll.h
5776 check_header sys/mman.h
5777 check_header sys/param.h
5778 check_header sys/resource.h
5779 check_header sys/select.h
5780 check_header sys/time.h
5781 check_header sys/un.h
5782 check_header termios.h
5783 check_header unistd.h
5784 check_header valgrind/valgrind.h
5785 check_header VideoDecodeAcceleration/VDADecoder.h
5786 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5787 check_header windows.h
5788 check_header X11/extensions/XvMClib.h
5789 check_header asm/types.h
5790
5791 # it seems there are versions of clang in some distros that try to use the
5792 # gcc headers, which explodes for stdatomic
5793 # so we also check that atomics actually work here
5794 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5795
5796 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5797 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5798 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5799 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5800
5801 enabled appkit       && check_apple_framework AppKit
5802 enabled audiotoolbox && check_apple_framework AudioToolbox
5803 enabled avfoundation && check_apple_framework AVFoundation
5804 enabled coreimage    && check_apple_framework CoreImage
5805 enabled videotoolbox && check_apple_framework VideoToolbox
5806
5807 enabled avfoundation && {
5808     check_lib avfoundation CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5809     check_lib avfoundation ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5810
5811 enabled videotoolbox &&
5812     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5813
5814 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5815
5816 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5817 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5818 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5819 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5820 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5821
5822 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5823 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5824 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5825 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5826 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5827 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5828 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5829 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5830 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5831
5832 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5833
5834 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5835
5836 if ! disabled w32threads && ! enabled pthreads; then
5837     check_func_headers "windows.h process.h" _beginthreadex &&
5838         enable w32threads || disable w32threads
5839     if ! enabled w32threads && enabled winrt; then
5840         check_func_headers "windows.h" CreateThread &&
5841             enable w32threads || disable w32threads
5842     fi
5843 fi
5844
5845 # check for some common methods of building with pthread support
5846 # do this before the optional library checks as some of them require pthreads
5847 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5848     if check_lib pthreads pthread.h pthread_join   -pthread &&
5849        check_lib pthreads pthread.h pthread_create -pthread; then
5850         add_cflags -pthread
5851     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5852          check_lib pthreads pthread.h pthread_create -pthreads; then
5853         add_cflags -pthreads
5854     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5855          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5856         add_cflags -ldl -pthread
5857     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5858          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5859         :
5860     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5861          check_lib pthreads pthread.h pthread_create -lpthread; then
5862         :
5863     elif check_func pthread_join && check_func pthread_create; then
5864         enable pthreads
5865     fi
5866     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5867 fi
5868
5869
5870 if enabled pthreads; then
5871   check_func pthread_cancel
5872 fi
5873
5874 enabled pthreads &&
5875     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5876
5877 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5878 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5879 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5880
5881 check_lib libm math.h sin -lm && LIBM="-lm"
5882
5883 atan2f_args=2
5884 copysign_args=2
5885 hypot_args=2
5886 ldexpf_args=2
5887 powf_args=2
5888
5889 for func in $MATH_FUNCS; do
5890     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5891 done
5892
5893 for func in $COMPLEX_FUNCS; do
5894     eval check_complexfunc $func \${${func}_args:-1}
5895 done
5896
5897 # these are off by default, so fail if requested and not available
5898 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5899 enabled cuvid             && { enabled cuda ||
5900                                die "ERROR: CUVID requires CUDA"; }
5901 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5902 enabled decklink          && { require_header DeckLinkAPI.h &&
5903                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5904 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5905 enabled frei0r            && require_header frei0r.h
5906 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5907 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5908 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5909 enabled ladspa            && require_header ladspa.h
5910 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5911 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5912 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5913 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5914 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5915                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5916                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5917 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5918 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5919 enabled libdrm            && require_pkg_config libdrm xf86drm.h drmGetVersion
5920 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5921                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5922                                  warn "using libfdk without pkg-config"; } }
5923 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5924 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5925 enabled fontconfig        && enable libfontconfig
5926 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5927 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5928 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5929 enabled libgme            && { use_pkg_config libgme gme/gme.h gme_new_emu ||
5930                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5931 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5932                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5933                                done || die "ERROR: libgsm not found"; }
5934 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5935 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5936 # While it may appear that require is being used as a pkg-config
5937 # fallback for libmfx, it is actually being used to detect a different
5938 # installation route altogether.  If libmfx is installed via the Intel
5939 # Media SDK or Intel Media Server Studio, these don't come with
5940 # pkg-config support.  Instead, users should make sure that the build
5941 # can find the libraries and headers through other means.
5942 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5943                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5944 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5945 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5946 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5947 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5948                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5949                                die "ERROR: libnpp not found"; }
5950 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5951 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5952 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5953                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5954                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5955                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5956 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5957 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5958                                check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 ||
5959                                { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5960                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5961                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5962                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5963                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5964                                die "ERROR: libopenjpeg not found"; }
5965 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5966 enabled libopus           && {
5967     enabled libopus_decoder && {
5968         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5969     }
5970     enabled libopus_encoder && {
5971         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5972     }
5973 }
5974 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5975 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5976 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5977 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5978 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5979 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5980                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5981 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5982 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5983 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5984 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5985 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5986 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5987 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5988                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5989                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5990 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5991 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5992 enabled libvmaf           && require_pkg_config libvmaf libvmaf.h compute_vmaf
5993 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5994 enabled libvorbis         && require_pkg_config vorbis vorbis/codec.h vorbis_info_init &&
5995                              require_pkg_config vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5996
5997 enabled libvpx            && {
5998     enabled libvpx_vp8_decoder && {
5999         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6000             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6001                 die "ERROR: libvpx decoder version must be >=0.9.1";
6002     }
6003     enabled libvpx_vp8_encoder && {
6004         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6005             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6006                 die "ERROR: libvpx encoder version must be >=0.9.7";
6007     }
6008     enabled libvpx_vp9_decoder && {
6009         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6010             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6011     }
6012     enabled libvpx_vp9_encoder && {
6013         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6014             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6015     }
6016     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6017         die "libvpx enabled but no supported decoders found"
6018     fi
6019 }
6020
6021 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6022 enabled libwebp           && {
6023     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6024     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
6025 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
6026                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6027                                  warn "using libx264 without pkg-config"; } } &&
6028                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6029                              { check_cpp_condition x264.h "X264_MPEG2" &&
6030                                enable libx262; }
6031 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
6032                              require_cpp_condition x265.h "X265_BUILD >= 68"
6033 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
6034 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6035 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
6036 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
6037 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
6038                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6039                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6040 enabled libxml2           && require_pkg_config libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6041 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6042 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6043                                { ! enabled cross_compile &&
6044                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6045                                  add_ldflags -L/opt/vc/lib/ &&
6046                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6047                                die "ERROR: mmal not found" &&
6048                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6049 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6050                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6051                                die "ERROR: openal not found"; } &&
6052                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6053                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6054 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6055                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6056                                die "ERROR: opencl not found"; } &&
6057                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6058                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6059                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6060 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6061                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6062                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6063                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6064                                die "ERROR: opengl not found."
6065                              }
6066 enabled omx_rpi           && { check_header OMX_Core.h ||
6067                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6068                                die "ERROR: OpenMAX IL headers not found"; }
6069 enabled omx               && require_header OMX_Core.h
6070 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
6071                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
6072                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6073                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6074                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6075                                die "ERROR: openssl not found"; }
6076
6077 if enabled gcrypt; then
6078     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6079     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6080         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6081         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6082         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6083             die "ERROR: gcrypt not found"
6084         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
6085     else
6086         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6087     fi
6088 fi
6089
6090 if enabled sdl2; then
6091     SDL2_CONFIG="${cross_prefix}sdl2-config"
6092     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
6093         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6094         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6095         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6096             disable sdl2
6097     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6098         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6099         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6100         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6101         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6102         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6103             disable sdl2
6104     else
6105         disable sdl2
6106     fi
6107     if test $target_os = "mingw32"; then
6108         sdl2_extralibs="$sdl2_extralibs -mconsole"
6109     fi
6110 fi
6111 enabled sdl2 && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
6112
6113 if enabled decklink; then
6114     case $target_os in
6115         mingw32*|mingw64*|win32|win64)
6116             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6117             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6118             ;;
6119     esac
6120 fi
6121
6122 enabled securetransport &&
6123     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6124     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6125         disable securetransport
6126
6127 enabled schannel &&
6128     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6129     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6130     add_extralibs -lsecur32 ||
6131         disable schannel
6132
6133 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6134 enabled makeinfo \
6135     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6136     && enable makeinfo_html || disable makeinfo_html
6137 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6138 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6139 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6140 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6141
6142 # check V4L2 codecs available in the API
6143 check_header linux/fb.h
6144 check_header linux/videodev2.h
6145 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6146 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6147 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6148 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6149 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6150 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6151 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6152 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6153 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6154 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6155 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6156
6157 check_header sys/videoio.h
6158 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6159
6160 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6161 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6162 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6163 # w32api 3.12 had it defined wrong
6164 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6165
6166 check_type "dshow.h" IBaseFilter
6167
6168 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6169 { check_header dev/bktr/ioctl_meteor.h &&
6170   check_header dev/bktr/ioctl_bt848.h; } ||
6171 { check_header machine/ioctl_meteor.h &&
6172   check_header machine/ioctl_bt848.h; } ||
6173 { check_header dev/video/meteor/ioctl_meteor.h &&
6174   check_header dev/video/bktr/ioctl_bt848.h; } ||
6175 check_header dev/ic/bt8xx.h
6176
6177 if check_struct sys/soundcard.h audio_buf_info bytes; then
6178     enable_safe sys/soundcard.h
6179 else
6180     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6181     #include <sys/soundcard.h>
6182     audio_buf_info abc;
6183 EOF
6184 fi
6185 check_header soundcard.h
6186
6187 enabled alsa && check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6188
6189 enabled jack && check_lib jack jack/jack.h jack_client_open -ljack &&
6190     check_func jack_port_get_latency_range -ljack
6191
6192 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6193
6194 if enabled libcdio; then
6195     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6196     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6197     die "ERROR: No usable libcdio/cdparanoia found"
6198 fi
6199
6200 enabled libxcb && check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || disable libxcb
6201
6202 if enabled libxcb; then
6203
6204     enabled libxcb_shm    && check_pkg_config xcb-shm    xcb/shm.h    xcb_shm_attach              || disable libxcb_shm
6205     enabled libxcb_shape  && check_pkg_config xcb-shape  xcb/shape.h  xcb_shape_get_rectangles    || disable libxcb_shape
6206     enabled libxcb_xfixes && check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || disable libxcb_xfixes
6207
6208     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6209     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6210 fi
6211
6212 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6213
6214 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6215 # the desktop api partition
6216 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6217 #ifdef WINAPI_FAMILY
6218 #include <winapifamily.h>
6219 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6220 #error desktop, not uwp
6221 #else
6222 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6223 #endif
6224 #else
6225 #error no family set
6226 #endif
6227 EOF
6228
6229 enabled vaapi &&
6230     check_lib vaapi va/va.h vaInitialize -lva
6231
6232 enabled vaapi &&
6233     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6234     disable vaapi
6235
6236 enabled vaapi &&
6237     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6238
6239 enabled vaapi &&
6240     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6241
6242 enabled vdpau &&
6243     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6244     disable vdpau
6245
6246 enabled vdpau &&
6247     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6248
6249 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6250
6251 if enabled x86; then
6252     case $target_os in
6253         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6254             ;;
6255         *)
6256             disable cuda cuvid nvenc
6257             ;;
6258     esac
6259 else
6260     disable cuda cuvid nvenc
6261 fi
6262
6263 enabled nvenc &&
6264     check_cc -I$source_path <<EOF || disable nvenc
6265 #include "compat/nvenc/nvEncodeAPI.h"
6266 NV_ENCODE_API_FUNCTION_LIST flist;
6267 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6268 int main(void) { return 0; }
6269 EOF
6270
6271 # Funny iconv installations are not unusual, so check it after all flags have been set
6272 if enabled libc_iconv; then
6273     check_func_headers iconv.h iconv
6274 elif enabled iconv; then
6275     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6276 fi
6277
6278 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6279
6280 # add some useful compiler flags if supported
6281 check_cflags -Wdeclaration-after-statement
6282 check_cflags -Wall
6283 check_cflags -Wdisabled-optimization
6284 check_cflags -Wpointer-arith
6285 check_cflags -Wredundant-decls
6286 check_cflags -Wwrite-strings
6287 check_cflags -Wtype-limits
6288 check_cflags -Wundef
6289 check_cflags -Wmissing-prototypes
6290 check_cflags -Wno-pointer-to-int-cast
6291 check_cflags -Wstrict-prototypes
6292 check_cflags -Wempty-body
6293
6294 if enabled extra_warnings; then
6295     check_cflags -Wcast-qual
6296     check_cflags -Wextra
6297     check_cflags -Wpedantic
6298 fi
6299
6300 check_disable_warning(){
6301     warning_flag=-W${1#-Wno-}
6302     test_cflags $warning_flag && add_cflags $1
6303 }
6304
6305 check_disable_warning -Wno-parentheses
6306 check_disable_warning -Wno-switch
6307 check_disable_warning -Wno-format-zero-length
6308 check_disable_warning -Wno-pointer-sign
6309 check_disable_warning -Wno-unused-const-variable
6310
6311 check_disable_warning_headers(){
6312     warning_flag=-W${1#-Wno-}
6313     test_cflags $warning_flag && add_cflags_headers $1
6314 }
6315
6316 check_disable_warning_headers -Wno-deprecated-declarations
6317 check_disable_warning_headers -Wno-unused-variable
6318
6319 check_cc <<EOF && enable blocks_extension
6320 void (^block)(void);
6321 EOF
6322
6323 # add some linker flags
6324 check_ldflags -Wl,--warn-common
6325 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6326 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6327 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6328 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6329
6330 # add some strip flags
6331 check_stripflags -x
6332
6333 enabled neon_clobber_test &&
6334     check_ldflags -Wl,--wrap,avcodec_open2              \
6335                   -Wl,--wrap,avcodec_decode_audio4      \
6336                   -Wl,--wrap,avcodec_decode_video2      \
6337                   -Wl,--wrap,avcodec_decode_subtitle2   \
6338                   -Wl,--wrap,avcodec_encode_audio2      \
6339                   -Wl,--wrap,avcodec_encode_video2      \
6340                   -Wl,--wrap,avcodec_encode_subtitle    \
6341                   -Wl,--wrap,avcodec_send_packet        \
6342                   -Wl,--wrap,avcodec_receive_packet     \
6343                   -Wl,--wrap,avcodec_send_frame         \
6344                   -Wl,--wrap,avcodec_receive_frame      \
6345                   -Wl,--wrap,swr_convert                \
6346                   -Wl,--wrap,avresample_convert ||
6347     disable neon_clobber_test
6348
6349 enabled xmm_clobber_test &&
6350     check_ldflags -Wl,--wrap,avcodec_open2              \
6351                   -Wl,--wrap,avcodec_decode_audio4      \
6352                   -Wl,--wrap,avcodec_decode_video2      \
6353                   -Wl,--wrap,avcodec_decode_subtitle2   \
6354                   -Wl,--wrap,avcodec_encode_audio2      \
6355                   -Wl,--wrap,avcodec_encode_video2      \
6356                   -Wl,--wrap,avcodec_encode_subtitle    \
6357                   -Wl,--wrap,avcodec_send_packet        \
6358                   -Wl,--wrap,avcodec_receive_packet     \
6359                   -Wl,--wrap,avcodec_send_frame         \
6360                   -Wl,--wrap,avcodec_receive_frame      \
6361                   -Wl,--wrap,swr_convert                \
6362                   -Wl,--wrap,avresample_convert         \
6363                   -Wl,--wrap,sws_scale ||
6364     disable xmm_clobber_test
6365
6366 check_ld "cc" <<EOF && enable proper_dce
6367 extern const int array[512];
6368 static inline int func(void) { return array[0]; }
6369 int main(void) { return 0; }
6370 EOF
6371
6372 if enabled proper_dce; then
6373     echo "X { local: *; };" > $TMPV
6374     if test_ldflags -Wl,${version_script},$TMPV; then
6375         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6376         check_cc <<EOF && enable symver_asm_label
6377 void ff_foo(void) __asm__ ("av_foo@VERSION");
6378 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6379 EOF
6380         check_cc <<EOF && enable symver_gnu_asm
6381 __asm__(".symver ff_foo,av_foo@VERSION");
6382 void ff_foo(void) {}
6383 EOF
6384     fi
6385 fi
6386
6387 if [ -z "$optflags" ]; then
6388     if enabled small; then
6389         optflags=$cflags_size
6390     elif enabled optimizations; then
6391         optflags=$cflags_speed
6392     else
6393         optflags=$cflags_noopt
6394     fi
6395 fi
6396
6397 if [ -z "$nvccflags" ]; then
6398     nvccflags=$nvccflags_default
6399 fi
6400
6401 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6402     nvccflags="$nvccflags -m64"
6403 else
6404     nvccflags="$nvccflags -m32"
6405 fi
6406
6407 check_optflags(){
6408     check_cflags "$@"
6409     enabled lto && check_ldflags "$@"
6410 }
6411
6412 check_optflags $optflags
6413 check_optflags -fno-math-errno
6414 check_optflags -fno-signed-zeros
6415
6416 if enabled lto; then
6417     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6418     check_cflags  -flto
6419     check_ldflags -flto $cpuflags
6420     disable inline_asm_direct_symbol_refs
6421 fi
6422
6423 enabled ftrapv && check_cflags -ftrapv
6424
6425 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6426 int x;
6427 EOF
6428
6429
6430 if enabled icc; then
6431     # Just warnings, no remarks
6432     check_cflags -w1
6433     # -wd: Disable following warnings
6434     # 144, 167, 556: -Wno-pointer-sign
6435     # 188: enumerated type mixed with another type
6436     # 1292: attribute "foo" ignored
6437     # 1419: external declaration in primary source file
6438     # 10006: ignoring unknown option -fno-signed-zeros
6439     # 10148: ignoring unknown option -Wno-parentheses
6440     # 10156: ignoring option '-W'; no argument required
6441     # 13200: No EMMS instruction before call to function
6442     # 13203: No EMMS instruction before return from function
6443     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6444     # 11030: Warning unknown option --as-needed
6445     # 10156: ignoring option '-export'; no argument required
6446     check_ldflags -wd10156,11030
6447     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6448     enable ebp_available
6449     # The test above does not test linking
6450     enabled lto && disable symver_asm_label
6451     if enabled x86_32; then
6452         icc_version=$($cc -dumpversion)
6453         test ${icc_version%%.*} -ge 11 &&
6454             check_cflags -falign-stack=maintain-16-byte ||
6455             disable aligned_stack
6456     fi
6457 elif enabled ccc; then
6458     # disable some annoying warnings
6459     add_cflags -msg_disable bitnotint
6460     add_cflags -msg_disable mixfuncvoid
6461     add_cflags -msg_disable nonstandcast
6462     add_cflags -msg_disable unsupieee
6463 elif enabled gcc; then
6464     check_optflags -fno-tree-vectorize
6465     check_cflags -Werror=format-security
6466     check_cflags -Werror=implicit-function-declaration
6467     check_cflags -Werror=missing-prototypes
6468     check_cflags -Werror=return-type
6469     check_cflags -Werror=vla
6470     check_cflags -Wformat
6471     check_cflags -fdiagnostics-color=auto
6472     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6473 elif enabled llvm_gcc; then
6474     check_cflags -mllvm -stack-alignment=16
6475 elif enabled clang; then
6476     check_cflags -mllvm -stack-alignment=16
6477     check_cflags -mstack-alignment=16
6478     check_cflags -Qunused-arguments
6479     check_cflags -Werror=implicit-function-declaration
6480     check_cflags -Werror=missing-prototypes
6481     check_cflags -Werror=return-type
6482 elif enabled cparser; then
6483     add_cflags -Wno-missing-variable-declarations
6484     add_cflags -Wno-empty-statement
6485 elif enabled armcc; then
6486     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6487     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6488     # 2523: use of inline assembly is deprecated
6489     add_cflags -W${armcc_opt},--diag_suppress=2523
6490     add_cflags -W${armcc_opt},--diag_suppress=1207
6491     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6492     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6493     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6494     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6495 elif enabled tms470; then
6496     add_cflags -pds=824 -pds=837
6497     disable inline_asm
6498 elif enabled pathscale; then
6499     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6500 elif enabled_any msvc icl; then
6501     enabled x86_32 && disable aligned_stack
6502     enabled_all x86_32 debug && add_cflags -Oy-
6503     enabled debug && add_ldflags -debug
6504     enable pragma_deprecated
6505     if enabled icl; then
6506         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6507         # (correctly) on icl 13.x.
6508         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6509             add_cflags -Qansi-alias
6510         # Some inline asm is not compilable in debug
6511         if enabled debug; then
6512             disable ebp_available
6513             disable ebx_available
6514         fi
6515     fi
6516     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6517     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6518     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6519     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6520     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6521     # MSVC 2013 and newer can handle it fine.
6522     # If this declspec fails, force including stdlib.h before the restrict redefinition
6523     # happens in config.h.
6524     if [ $_restrict != restrict ]; then
6525         check_cc <<EOF || add_cflags -FIstdlib.h
6526 __declspec($_restrict) void* foo(int);
6527 EOF
6528     fi
6529     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6530     # Issue has been fixed in MSVC v19.00.24218.
6531     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6532         check_cflags -d2SSAOptimizer-
6533     # enable utf-8 source processing on VS2015 U2 and newer
6534     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6535         add_cflags -utf-8
6536 fi
6537
6538 for pfx in "" host_; do
6539     varname=${pfx%_}cc_type
6540     eval "type=\$$varname"
6541     if [ "$type" = "msvc" ]; then
6542         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6543 static inline int foo(int a) { return a; }
6544 EOF
6545     fi
6546 done
6547
6548 case $as_type in
6549     clang)
6550         add_asflags -Qunused-arguments
6551     ;;
6552 esac
6553
6554 case $ld_type in
6555     clang)
6556         check_ldflags -Qunused-arguments
6557     ;;
6558 esac
6559
6560 case $target_os in
6561     osf1)
6562         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6563     ;;
6564 esac
6565
6566 enable frame_thread_encoder
6567
6568 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6569
6570 check_deps $CONFIG_LIST       \
6571            $CONFIG_EXTRA      \
6572            $HAVE_LIST         \
6573            $ALL_COMPONENTS    \
6574
6575 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"
6576
6577
6578 if test $target_os = "haiku"; then
6579     disable memalign
6580     disable posix_memalign
6581 fi
6582
6583 # add_dep lib dep
6584 # -> enable ${lib}_deps_${dep}
6585 # -> add $dep to ${lib}_deps only once
6586 add_dep() {
6587     lib=$1
6588     dep=$2
6589     enabled "${lib}_deps_${dep}" && return 0
6590     enable  "${lib}_deps_${dep}"
6591     prepend "${lib}_deps" $dep
6592 }
6593
6594 # merge deps lib components
6595 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6596 merge_deps() {
6597     lib=$1
6598     shift
6599     for comp in $*; do
6600         enabled $comp || continue
6601         eval "dep=\"\$${comp}_deps\""
6602         for d in $dep; do
6603             add_dep $lib $d
6604         done
6605     done
6606 }
6607
6608 merge_deps libavfilter $FILTER_LIST
6609
6610 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6611
6612 for thread in $THREADS_LIST; do
6613     if enabled $thread; then
6614         test -n "$thread_type" &&
6615             die "ERROR: Only one thread type must be selected." ||
6616             thread_type="$thread"
6617     fi
6618 done
6619
6620 if disabled stdatomic_h; then
6621     if enabled atomics_gcc; then
6622         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6623     elif enabled atomics_win32; then
6624         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6625     elif enabled atomics_suncc; then
6626         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6627     elif enabled pthreads; then
6628         add_compat atomics/pthread/stdatomic.o
6629         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6630     else
6631         enabled threads && die "Threading is enabled, but no atomics are available"
6632         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6633     fi
6634 fi
6635
6636 # Check if requested libraries were found.
6637 for lib in $AUTODETECT_LIBS; do
6638     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6639 done
6640
6641 enabled zlib && add_cppflags -DZLIB_CONST
6642
6643 # conditional library dependencies, in linking order
6644 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6645 enabled afir_filter         && prepend avfilter_deps "avcodec"
6646 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6647 enabled aresample_filter    && prepend avfilter_deps "swresample"
6648 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6649 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6650 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6651 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6652 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6653 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6654 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6655 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6656 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6657 enabled pan_filter          && prepend avfilter_deps "swresample"
6658 enabled pp_filter           && prepend avfilter_deps "postproc"
6659 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6660 enabled resample_filter && prepend avfilter_deps "avresample"
6661 enabled sab_filter          && prepend avfilter_deps "swscale"
6662 enabled scale_filter    && prepend avfilter_deps "swscale"
6663 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6664 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6665 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6666 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6667 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6668 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6669 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6670 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6671 enabled spp_filter          && prepend avfilter_deps "avcodec"
6672 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6673 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6674 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6675
6676 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6677
6678 enabled opus_decoder    && prepend avcodec_deps "swresample"
6679
6680 expand_deps(){
6681     lib_deps=${1}_deps
6682     eval "deps=\$$lib_deps"
6683     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6684     unique $lib_deps
6685 }
6686
6687 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6688 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6689
6690 map 'expand_deps $v' $LIBRARY_LIST
6691
6692 license="LGPL version 2.1 or later"
6693 if enabled nonfree; then
6694     license="nonfree and unredistributable"
6695 elif enabled gplv3; then
6696     license="GPL version 3 or later"
6697 elif enabled lgplv3; then
6698     license="LGPL version 3 or later"
6699 elif enabled gpl; then
6700     license="GPL version 2 or later"
6701 fi
6702
6703 if test "$quiet" != "yes"; then
6704
6705 echo "install prefix            $prefix"
6706 echo "source path               $source_path"
6707 echo "C compiler                $cc"
6708 echo "C library                 $libc_type"
6709 if test "$host_cc" != "$cc"; then
6710     echo "host C compiler           $host_cc"
6711     echo "host C library            $host_libc_type"
6712 fi
6713 echo "ARCH                      $arch ($cpu)"
6714 if test "$build_suffix" != ""; then
6715     echo "build suffix              $build_suffix"
6716 fi
6717 if test "$progs_suffix" != ""; then
6718     echo "progs suffix              $progs_suffix"
6719 fi
6720 if test "$extra_version" != ""; then
6721     echo "version string suffix     $extra_version"
6722 fi
6723 echo "big-endian                ${bigendian-no}"
6724 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6725 if enabled x86; then
6726     echo "standalone assembly       ${x86asm-no}"
6727     echo "x86 assembler             ${x86asmexe}"
6728     echo "MMX enabled               ${mmx-no}"
6729     echo "MMXEXT enabled            ${mmxext-no}"
6730     echo "3DNow! enabled            ${amd3dnow-no}"
6731     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6732     echo "SSE enabled               ${sse-no}"
6733     echo "SSSE3 enabled             ${ssse3-no}"
6734     echo "AESNI enabled             ${aesni-no}"
6735     echo "AVX enabled               ${avx-no}"
6736     echo "AVX2 enabled              ${avx2-no}"
6737     echo "XOP enabled               ${xop-no}"
6738     echo "FMA3 enabled              ${fma3-no}"
6739     echo "FMA4 enabled              ${fma4-no}"
6740     echo "i686 features enabled     ${i686-no}"
6741     echo "CMOV is fast              ${fast_cmov-no}"
6742     echo "EBX available             ${ebx_available-no}"
6743     echo "EBP available             ${ebp_available-no}"
6744 fi
6745 if enabled aarch64; then
6746     echo "NEON enabled              ${neon-no}"
6747     echo "VFP enabled               ${vfp-no}"
6748 fi
6749 if enabled arm; then
6750     echo "ARMv5TE enabled           ${armv5te-no}"
6751     echo "ARMv6 enabled             ${armv6-no}"
6752     echo "ARMv6T2 enabled           ${armv6t2-no}"
6753     echo "VFP enabled               ${vfp-no}"
6754     echo "NEON enabled              ${neon-no}"
6755     echo "THUMB enabled             ${thumb-no}"
6756 fi
6757 if enabled mips; then
6758     echo "MIPS FPU enabled          ${mipsfpu-no}"
6759     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6760     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6761     echo "MIPS MSA enabled          ${msa-no}"
6762     echo "LOONGSON MMI enabled      ${mmi-no}"
6763 fi
6764 if enabled ppc; then
6765     echo "AltiVec enabled           ${altivec-no}"
6766     echo "VSX enabled               ${vsx-no}"
6767     echo "POWER8 enabled            ${power8-no}"
6768     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6769     echo "dcbzl available           ${dcbzl-no}"
6770 fi
6771 echo "debug symbols             ${debug-no}"
6772 echo "strip symbols             ${stripping-no}"
6773 echo "optimize for size         ${small-no}"
6774 echo "optimizations             ${optimizations-no}"
6775 echo "static                    ${static-no}"
6776 echo "shared                    ${shared-no}"
6777 echo "postprocessing support    ${postproc-no}"
6778 echo "network support           ${network-no}"
6779 echo "threading support         ${thread_type-no}"
6780 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6781 echo "texi2html enabled         ${texi2html-no}"
6782 echo "perl enabled              ${perl-no}"
6783 echo "pod2man enabled           ${pod2man-no}"
6784 echo "makeinfo enabled          ${makeinfo-no}"
6785 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6786 test -n "$random_seed" &&
6787     echo "random seed               ${random_seed}"
6788 echo
6789
6790 echo "External libraries:"
6791 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6792 echo
6793
6794 echo "External libraries providing hardware acceleration:"
6795 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6796 echo
6797
6798 echo "Libraries:"
6799 print_enabled '' $LIBRARY_LIST | print_in_columns
6800 echo
6801
6802 echo "Programs:"
6803 print_enabled '' $PROGRAM_LIST | print_in_columns
6804 echo
6805
6806 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6807     echo "Enabled ${type}s:"
6808     eval list=\$$(toupper $type)_LIST
6809     print_enabled '_*' $list | print_in_columns
6810     echo
6811 done
6812
6813 if test -n "$ignore_tests"; then
6814     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6815     echo "Ignored FATE tests:"
6816     echo $ignore_tests | print_in_columns
6817     echo
6818 fi
6819
6820 echo "License: $license"
6821
6822 echo "Creating configuration files ..."
6823
6824 fi # test "$quiet" != "yes"
6825
6826 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6827
6828 enabled stripping || strip="echo skipping strip"
6829
6830 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6831
6832 cat > ffbuild/config.mak <<EOF
6833 # Automatically generated by configure - do not modify!
6834 ifndef FFMPEG_CONFIG_MAK
6835 FFMPEG_CONFIG_MAK=1
6836 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6837 prefix=$prefix
6838 LIBDIR=\$(DESTDIR)$libdir
6839 SHLIBDIR=\$(DESTDIR)$shlibdir
6840 INCDIR=\$(DESTDIR)$incdir
6841 BINDIR=\$(DESTDIR)$bindir
6842 DATADIR=\$(DESTDIR)$datadir
6843 DOCDIR=\$(DESTDIR)$docdir
6844 MANDIR=\$(DESTDIR)$mandir
6845 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6846 INSTALL_NAME_DIR=$install_name_dir
6847 SRC_PATH=$source_path
6848 SRC_LINK=$source_link
6849 ifndef MAIN_MAKEFILE
6850 SRC_PATH:=\$(SRC_PATH:.%=..%)
6851 endif
6852 CC_IDENT=$cc_ident
6853 ARCH=$arch
6854 INTRINSICS=$intrinsics
6855 CC=$cc
6856 CXX=$cxx
6857 AS=$as
6858 OBJCC=$objcc
6859 LD=$ld
6860 DEPCC=$dep_cc
6861 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6862 DEPAS=$as
6863 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6864 X86ASM=$x86asmexe
6865 DEPX86ASM=$x86asmexe
6866 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6867 AR=$ar
6868 ARFLAGS=$arflags
6869 AR_O=$ar_o
6870 RANLIB=$ranlib
6871 STRIP=$strip
6872 NVCC=$nvcc
6873 CP=cp -p
6874 LN_S=$ln_s
6875 CPPFLAGS=$CPPFLAGS
6876 CFLAGS=$CFLAGS
6877 CXXFLAGS=$CXXFLAGS
6878 OBJCFLAGS=$OBJCFLAGS
6879 ASFLAGS=$ASFLAGS
6880 NVCCFLAGS=$nvccflags
6881 AS_C=$AS_C
6882 AS_O=$AS_O
6883 OBJCC_C=$OBJCC_C
6884 OBJCC_E=$OBJCC_E
6885 OBJCC_O=$OBJCC_O
6886 CC_C=$CC_C
6887 CC_E=$CC_E
6888 CC_O=$CC_O
6889 CXX_C=$CXX_C
6890 CXX_O=$CXX_O
6891 NVCC_C=$NVCC_C
6892 NVCC_O=$NVCC_O
6893 LD_O=$LD_O
6894 X86ASM_O=$X86ASM_O
6895 LD_LIB=$LD_LIB
6896 LD_PATH=$LD_PATH
6897 DLLTOOL=$dlltool
6898 WINDRES=$windres
6899 DEPWINDRES=$dep_cc
6900 DOXYGEN=$doxygen
6901 LDFLAGS=$LDFLAGS
6902 LDEXEFLAGS=$LDEXEFLAGS
6903 LDLIBFLAGS=$LDLIBFLAGS
6904 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6905 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6906 X86ASMFLAGS=$X86ASMFLAGS
6907 BUILDSUF=$build_suffix
6908 PROGSSUF=$progs_suffix
6909 FULLNAME=$FULLNAME
6910 LIBPREF=$LIBPREF
6911 LIBSUF=$LIBSUF
6912 LIBNAME=$LIBNAME
6913 SLIBPREF=$SLIBPREF
6914 SLIBSUF=$SLIBSUF
6915 EXESUF=$EXESUF
6916 EXTRA_VERSION=$extra_version
6917 CCDEP=$CCDEP
6918 CXXDEP=$CXXDEP
6919 CCDEP_FLAGS=$CCDEP_FLAGS
6920 ASDEP=$ASDEP
6921 ASDEP_FLAGS=$ASDEP_FLAGS
6922 X86ASMDEP=$X86ASMDEP
6923 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6924 CC_DEPFLAGS=$CC_DEPFLAGS
6925 AS_DEPFLAGS=$AS_DEPFLAGS
6926 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6927 HOSTCC=$host_cc
6928 HOSTLD=$host_ld
6929 HOSTCFLAGS=$host_cflags
6930 HOSTCPPFLAGS=$host_cppflags
6931 HOSTEXESUF=$HOSTEXESUF
6932 HOSTLDFLAGS=$host_ldflags
6933 HOSTEXTRALIBS=$host_extralibs
6934 DEPHOSTCC=$host_cc
6935 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6936 HOSTCCDEP=$HOSTCCDEP
6937 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6938 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6939 HOSTCC_C=$HOSTCC_C
6940 HOSTCC_O=$HOSTCC_O
6941 HOSTLD_O=$HOSTLD_O
6942 TARGET_EXEC=$target_exec $target_exec_args
6943 TARGET_PATH=$target_path
6944 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6945 CFLAGS-ffplay=${sdl2_cflags}
6946 CFLAGS_HEADERS=$CFLAGS_HEADERS
6947 ZLIB=$($ldflags_filter -lz)
6948 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6949 EXTRALIBS=$extralibs
6950 COMPAT_OBJS=$compat_objs
6951 INSTALL=$install
6952 LIBTARGET=${LIBTARGET}
6953 SLIBNAME=${SLIBNAME}
6954 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6955 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6956 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6957 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6958 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6959 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6960 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6961 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6962 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6963 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6964 NOREDZONE_FLAGS=$noredzone_flags
6965 LIBFUZZER_PATH=$libfuzzer_path
6966 IGNORE_TESTS=$ignore_tests
6967 EOF
6968
6969 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6970
6971 print_program_extralibs(){
6972     eval "program_extralibs=\$${1}_extralibs"
6973     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6974 }
6975
6976 map 'print_program_extralibs $v' $PROGRAM_LIST
6977
6978 cat > $TMPH <<EOF
6979 /* Automatically generated by configure - do not modify! */
6980 #ifndef FFMPEG_CONFIG_H
6981 #define FFMPEG_CONFIG_H
6982 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6983 #define FFMPEG_LICENSE "$(c_escape $license)"
6984 #define CONFIG_THIS_YEAR 2017
6985 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6986 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6987 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6988 #define av_restrict $_restrict
6989 #define EXTERN_PREFIX "${extern_prefix}"
6990 #define EXTERN_ASM ${extern_prefix}
6991 #define BUILDSUF "$build_suffix"
6992 #define SLIBSUF "$SLIBSUF"
6993 #define HAVE_MMX2 HAVE_MMXEXT
6994 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6995 EOF
6996
6997 test -n "$assert_level" &&
6998     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6999
7000 test -n "$malloc_prefix" &&
7001     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7002
7003 if enabled x86asm; then
7004     append config_files $TMPASM
7005     printf '' >$TMPASM
7006 fi
7007
7008 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7009
7010
7011 mkdir -p doc
7012 mkdir -p tests
7013 mkdir -p tests/api
7014 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7015
7016 print_config ARCH_   "$config_files" $ARCH_LIST
7017 print_config HAVE_   "$config_files" $HAVE_LIST
7018 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7019                                      $CONFIG_EXTRA      \
7020                                      $ALL_COMPONENTS    \
7021
7022 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7023 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7024
7025 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7026 cp_if_changed $TMPH config.h
7027 touch ffbuild/.config
7028
7029 enabled x86asm && cp_if_changed $TMPASM config.asm
7030
7031 cat > $TMPH <<EOF
7032 /* Generated by ffconf */
7033 #ifndef AVUTIL_AVCONFIG_H
7034 #define AVUTIL_AVCONFIG_H
7035 EOF
7036
7037 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7038
7039 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7040
7041 cp_if_changed $TMPH libavutil/avconfig.h
7042
7043 # generate the lists of enabled components
7044 print_enabled_components(){
7045     file=$1
7046     struct_name=$2
7047     name=$3
7048     shift 3
7049     echo "static const $struct_name * const $name[] = {" > $TMPH
7050     for c in $*; do
7051         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7052     done
7053     echo "    NULL };" >> $TMPH
7054     cp_if_changed $TMPH $file
7055 }
7056
7057 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7058 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7059
7060 if test -n "$WARNINGS"; then
7061     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7062     enabled fatal_warnings && exit 1
7063 fi
7064
7065 # Settings for pkg-config files
7066
7067 cat > ffbuild/config.sh <<EOF
7068 # Automatically generated by configure - do not modify!
7069 shared=$shared
7070 build_suffix=$build_suffix
7071 prefix=$prefix
7072 libdir=$libdir
7073 incdir=$incdir
7074 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7075 source_path=${source_path}
7076 LIBPREF=${LIBPREF}
7077 LIBSUF=${LIBSUF}
7078
7079 extralibs_avutil="$LIBRT $LIBM"
7080 extralibs_avcodec="$extralibs"
7081 extralibs_avformat="$extralibs"
7082 extralibs_avdevice="$extralibs"
7083 extralibs_avfilter="$extralibs"
7084 extralibs_avresample="$LIBM"
7085 extralibs_postproc=""
7086 extralibs_swscale="$LIBM"
7087 extralibs_swresample="$LIBM $LIBSOXR"
7088 EOF
7089
7090 for lib in $LIBRARY_LIST; do
7091     lib_deps="$(eval echo \$${lib}_deps)"
7092     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7093 done