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: $name not found"
1373 }
1374
1375 use_pkg_config(){
1376     log use_pkg_config "$@"
1377     pkg="$1"
1378     check_pkg_config "$@" || return 1
1379     add_cflags    $(get_safe "${pkg}_cflags")
1380     add_extralibs $(get_safe "${pkg}_extralibs")
1381 }
1382
1383 require_pkg_config(){
1384     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1385 }
1386
1387 hostcc_e(){
1388     eval printf '%s\\n' $HOSTCC_E
1389 }
1390
1391 hostcc_o(){
1392     eval printf '%s\\n' $HOSTCC_O
1393 }
1394
1395 check_host_cc(){
1396     log check_host_cc "$@"
1397     cat > $TMPC
1398     log_file $TMPC
1399     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1400 }
1401
1402 check_host_cpp(){
1403     log check_host_cpp "$@"
1404     cat > $TMPC
1405     log_file $TMPC
1406     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1407 }
1408
1409 check_host_cppflags(){
1410     log check_host_cppflags "$@"
1411     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1412 int x;
1413 EOF
1414 }
1415
1416 check_host_cflags(){
1417     log check_host_cflags "$@"
1418     set -- $($host_cflags_filter "$@")
1419     check_host_cc "$@" <<EOF && append host_cflags "$@"
1420 int x;
1421 EOF
1422 }
1423
1424 check_host_cpp_condition(){
1425     log check_host_cpp_condition "$@"
1426     header=$1
1427     condition=$2
1428     shift 2
1429     check_host_cpp "$@" <<EOF
1430 #include <$header>
1431 #if !($condition)
1432 #error "unsatisfied condition: $condition"
1433 #endif
1434 EOF
1435 }
1436
1437 cp_if_changed(){
1438     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1439     mkdir -p "$(dirname $2)"
1440     cp -f "$1" "$2"
1441 }
1442
1443 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1444 # system-dependent things.
1445
1446 AVCODEC_COMPONENTS="
1447     bsfs
1448     decoders
1449     encoders
1450     hwaccels
1451     parsers
1452 "
1453
1454 AVDEVICE_COMPONENTS="
1455     indevs
1456     outdevs
1457 "
1458
1459 AVFILTER_COMPONENTS="
1460     filters
1461 "
1462
1463 AVFORMAT_COMPONENTS="
1464     demuxers
1465     muxers
1466     protocols
1467 "
1468
1469 AVRESAMPLE_COMPONENTS=""
1470
1471 AVUTIL_COMPONENTS=""
1472
1473 COMPONENT_LIST="
1474     $AVCODEC_COMPONENTS
1475     $AVDEVICE_COMPONENTS
1476     $AVFILTER_COMPONENTS
1477     $AVFORMAT_COMPONENTS
1478     $AVRESAMPLE_COMPONENTS
1479     $AVUTIL_COMPONENTS
1480 "
1481
1482 EXAMPLE_LIST="
1483     avio_dir_cmd_example
1484     avio_reading_example
1485     decode_audio_example
1486     decode_video_example
1487     demuxing_decoding_example
1488     encode_audio_example
1489     encode_video_example
1490     extract_mvs_example
1491     filter_audio_example
1492     filtering_audio_example
1493     filtering_video_example
1494     http_multiclient_example
1495     hw_decode_example
1496     metadata_example
1497     muxing_example
1498     qsvdec_example
1499     remuxing_example
1500     resampling_audio_example
1501     scaling_video_example
1502     transcode_aac_example
1503     transcoding_example
1504 "
1505
1506 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1507     alsa
1508     appkit
1509     avfoundation
1510     bzlib
1511     coreimage
1512     iconv
1513     jack
1514     libxcb
1515     libxcb_shm
1516     libxcb_shape
1517     libxcb_xfixes
1518     lzma
1519     schannel
1520     sdl2
1521     securetransport
1522     sndio
1523     xlib
1524     zlib
1525 "
1526
1527 EXTERNAL_LIBRARY_GPL_LIST="
1528     avisynth
1529     frei0r
1530     libcdio
1531     librubberband
1532     libvidstab
1533     libx264
1534     libx265
1535     libxavs
1536     libxvid
1537 "
1538
1539 EXTERNAL_LIBRARY_NONFREE_LIST="
1540     decklink
1541     libndi_newtek
1542     libfdk_aac
1543     openssl
1544 "
1545
1546 EXTERNAL_LIBRARY_VERSION3_LIST="
1547     gmp
1548     libopencore_amrnb
1549     libopencore_amrwb
1550     libvo_amrwbenc
1551 "
1552
1553 EXTERNAL_LIBRARY_GPLV3_LIST="
1554     libsmbclient
1555 "
1556
1557 EXTERNAL_LIBRARY_LIST="
1558     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1559     $EXTERNAL_LIBRARY_GPL_LIST
1560     $EXTERNAL_LIBRARY_NONFREE_LIST
1561     $EXTERNAL_LIBRARY_VERSION3_LIST
1562     $EXTERNAL_LIBRARY_GPLV3_LIST
1563     chromaprint
1564     gcrypt
1565     gnutls
1566     jni
1567     ladspa
1568     libass
1569     libbluray
1570     libbs2b
1571     libcaca
1572     libcelt
1573     libdc1394
1574     libdrm
1575     libflite
1576     libfontconfig
1577     libfreetype
1578     libfribidi
1579     libgme
1580     libgsm
1581     libiec61883
1582     libilbc
1583     libkvazaar
1584     libmodplug
1585     libmp3lame
1586     libmysofa
1587     libopencv
1588     libopenh264
1589     libopenjpeg
1590     libopenmpt
1591     libopus
1592     libpulse
1593     librsvg
1594     librtmp
1595     libshine
1596     libsmbclient
1597     libsnappy
1598     libsoxr
1599     libspeex
1600     libssh
1601     libtesseract
1602     libtheora
1603     libtwolame
1604     libv4l2
1605     libvmaf
1606     libvorbis
1607     libvpx
1608     libwavpack
1609     libwebp
1610     libxml2
1611     libzimg
1612     libzmq
1613     libzvbi
1614     mediacodec
1615     openal
1616     opencl
1617     opengl
1618 "
1619
1620 HWACCEL_AUTODETECT_LIBRARY_LIST="
1621     audiotoolbox
1622     crystalhd
1623     cuda
1624     cuvid
1625     d3d11va
1626     dxva2
1627     nvenc
1628     vaapi
1629     vda
1630     vdpau
1631     videotoolbox
1632     v4l2_m2m
1633     xvmc
1634 "
1635
1636 HWACCEL_LIBRARY_NONFREE_LIST="
1637     cuda_sdk
1638     libnpp
1639 "
1640
1641 HWACCEL_LIBRARY_LIST="
1642     $HWACCEL_AUTODETECT_LIBRARY_LIST
1643     $HWACCEL_LIBRARY_NONFREE_LIST
1644     libmfx
1645     mmal
1646     omx
1647 "
1648
1649 DOCUMENT_LIST="
1650     doc
1651     htmlpages
1652     manpages
1653     podpages
1654     txtpages
1655 "
1656
1657 FEATURE_LIST="
1658     ftrapv
1659     gray
1660     hardcoded_tables
1661     omx_rpi
1662     runtime_cpudetect
1663     safe_bitstream_reader
1664     shared
1665     small
1666     static
1667     swscale_alpha
1668 "
1669
1670 LIBRARY_LIST="
1671     avcodec
1672     avdevice
1673     avfilter
1674     avformat
1675     avresample
1676     avutil
1677     postproc
1678     swresample
1679     swscale
1680 "
1681
1682 LICENSE_LIST="
1683     gpl
1684     nonfree
1685     version3
1686 "
1687
1688 PROGRAM_LIST="
1689     ffplay
1690     ffprobe
1691     ffserver
1692     ffmpeg
1693 "
1694
1695 SUBSYSTEM_LIST="
1696     dct
1697     dwt
1698     error_resilience
1699     faan
1700     fast_unaligned
1701     fft
1702     lsp
1703     lzo
1704     mdct
1705     pixelutils
1706     network
1707     rdft
1708 "
1709
1710 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1711 CONFIG_LIST="
1712     $DOCUMENT_LIST
1713     $EXAMPLE_LIST
1714     $EXTERNAL_LIBRARY_LIST
1715     $HWACCEL_LIBRARY_LIST
1716     $FEATURE_LIST
1717     $LICENSE_LIST
1718     $LIBRARY_LIST
1719     $PROGRAM_LIST
1720     $SUBSYSTEM_LIST
1721     autodetect
1722     fontconfig
1723     linux_perf
1724     memory_poisoning
1725     neon_clobber_test
1726     ossfuzz
1727     pic
1728     thumb
1729     valgrind_backtrace
1730     xmm_clobber_test
1731     $COMPONENT_LIST
1732 "
1733
1734 THREADS_LIST="
1735     pthreads
1736     os2threads
1737     w32threads
1738 "
1739
1740 ATOMICS_LIST="
1741     atomics_gcc
1742     atomics_suncc
1743     atomics_win32
1744 "
1745
1746 AUTODETECT_LIBS="
1747     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1748     $HWACCEL_AUTODETECT_LIBRARY_LIST
1749     $THREADS_LIST
1750 "
1751
1752 ARCH_LIST="
1753     aarch64
1754     alpha
1755     arm
1756     avr32
1757     avr32_ap
1758     avr32_uc
1759     bfin
1760     ia64
1761     m68k
1762     mips
1763     mips64
1764     parisc
1765     ppc
1766     ppc64
1767     s390
1768     sh4
1769     sparc
1770     sparc64
1771     tilegx
1772     tilepro
1773     tomi
1774     x86
1775     x86_32
1776     x86_64
1777 "
1778
1779 ARCH_EXT_LIST_ARM="
1780     armv5te
1781     armv6
1782     armv6t2
1783     armv8
1784     neon
1785     vfp
1786     vfpv3
1787     setend
1788 "
1789
1790 ARCH_EXT_LIST_MIPS="
1791     mipsfpu
1792     mips32r2
1793     mips32r5
1794     mips64r2
1795     mips32r6
1796     mips64r6
1797     mipsdsp
1798     mipsdspr2
1799     msa
1800 "
1801
1802 ARCH_EXT_LIST_LOONGSON="
1803     loongson2
1804     loongson3
1805     mmi
1806 "
1807
1808 ARCH_EXT_LIST_X86_SIMD="
1809     aesni
1810     amd3dnow
1811     amd3dnowext
1812     avx
1813     avx2
1814     fma3
1815     fma4
1816     mmx
1817     mmxext
1818     sse
1819     sse2
1820     sse3
1821     sse4
1822     sse42
1823     ssse3
1824     xop
1825 "
1826
1827 ARCH_EXT_LIST_PPC="
1828     altivec
1829     dcbzl
1830     ldbrx
1831     power8
1832     ppc4xx
1833     vsx
1834 "
1835
1836 ARCH_EXT_LIST_X86="
1837     $ARCH_EXT_LIST_X86_SIMD
1838     cpunop
1839     i686
1840 "
1841
1842 ARCH_EXT_LIST="
1843     $ARCH_EXT_LIST_ARM
1844     $ARCH_EXT_LIST_PPC
1845     $ARCH_EXT_LIST_X86
1846     $ARCH_EXT_LIST_MIPS
1847     $ARCH_EXT_LIST_LOONGSON
1848 "
1849
1850 ARCH_FEATURES="
1851     aligned_stack
1852     fast_64bit
1853     fast_clz
1854     fast_cmov
1855     local_aligned_8
1856     local_aligned_16
1857     local_aligned_32
1858     simd_align_16
1859     simd_align_32
1860 "
1861
1862 BUILTIN_LIST="
1863     atomic_cas_ptr
1864     machine_rw_barrier
1865     MemoryBarrier
1866     mm_empty
1867     rdtsc
1868     sarestart
1869     sem_timedwait
1870     sync_val_compare_and_swap
1871 "
1872 HAVE_LIST_CMDLINE="
1873     inline_asm
1874     symver
1875     x86asm
1876 "
1877
1878 HAVE_LIST_PUB="
1879     bigendian
1880     fast_unaligned
1881 "
1882
1883 HEADERS_LIST="
1884     altivec_h
1885     arpa_inet_h
1886     asm_types_h
1887     cdio_paranoia_h
1888     cdio_paranoia_paranoia_h
1889     cuda_h
1890     d3d11_h
1891     dispatch_dispatch_h
1892     dev_bktr_ioctl_bt848_h
1893     dev_bktr_ioctl_meteor_h
1894     dev_ic_bt8xx_h
1895     dev_video_bktr_ioctl_bt848_h
1896     dev_video_meteor_ioctl_meteor_h
1897     direct_h
1898     dirent_h
1899     dlfcn_h
1900     dxgidebug_h
1901     dxva_h
1902     ES2_gl_h
1903     gsm_h
1904     io_h
1905     mach_mach_time_h
1906     machine_ioctl_bt848_h
1907     machine_ioctl_meteor_h
1908     malloc_h
1909     opencv2_core_core_c_h
1910     openjpeg_2_2_openjpeg_h
1911     openjpeg_2_1_openjpeg_h
1912     openjpeg_2_0_openjpeg_h
1913     openjpeg_1_5_openjpeg_h
1914     OpenGL_gl3_h
1915     poll_h
1916     soundcard_h
1917     stdatomic_h
1918     sys_mman_h
1919     sys_param_h
1920     sys_resource_h
1921     sys_select_h
1922     sys_soundcard_h
1923     sys_time_h
1924     sys_un_h
1925     sys_videoio_h
1926     termios_h
1927     udplite_h
1928     unistd_h
1929     valgrind_valgrind_h
1930     windows_h
1931     winsock2_h
1932 "
1933
1934 INTRINSICS_LIST="
1935     intrinsics_neon
1936 "
1937
1938 COMPLEX_FUNCS="
1939     cabs
1940     cexp
1941 "
1942
1943 MATH_FUNCS="
1944     atanf
1945     atan2f
1946     cbrt
1947     cbrtf
1948     copysign
1949     cosf
1950     erf
1951     exp2
1952     exp2f
1953     expf
1954     hypot
1955     isfinite
1956     isinf
1957     isnan
1958     ldexpf
1959     llrint
1960     llrintf
1961     log2
1962     log2f
1963     log10f
1964     lrint
1965     lrintf
1966     powf
1967     rint
1968     round
1969     roundf
1970     sinf
1971     trunc
1972     truncf
1973 "
1974
1975 SYSTEM_FUNCS="
1976     access
1977     aligned_malloc
1978     arc4random
1979     clock_gettime
1980     closesocket
1981     CommandLineToArgvW
1982     CoTaskMemFree
1983     CryptGenRandom
1984     dlopen
1985     fcntl
1986     flt_lim
1987     fork
1988     getaddrinfo
1989     gethrtime
1990     getopt
1991     GetProcessAffinityMask
1992     GetProcessMemoryInfo
1993     GetProcessTimes
1994     getrusage
1995     GetSystemTimeAsFileTime
1996     gettimeofday
1997     glob
1998     glXGetProcAddress
1999     gmtime_r
2000     inet_aton
2001     isatty
2002     jack_port_get_latency_range
2003     kbhit
2004     LoadLibrary
2005     localtime_r
2006     lstat
2007     lzo1x_999_compress
2008     mach_absolute_time
2009     MapViewOfFile
2010     memalign
2011     mkstemp
2012     mmap
2013     mprotect
2014     nanosleep
2015     PeekNamedPipe
2016     posix_memalign
2017     pthread_cancel
2018     sched_getaffinity
2019     SetConsoleTextAttribute
2020     SetConsoleCtrlHandler
2021     setmode
2022     setrlimit
2023     Sleep
2024     strerror_r
2025     sysconf
2026     sysctl
2027     usleep
2028     UTGetOSTypeFromString
2029     VirtualAlloc
2030     wglGetProcAddress
2031 "
2032
2033 TOOLCHAIN_FEATURES="
2034     as_dn_directive
2035     as_fpu_directive
2036     as_func
2037     as_object_arch
2038     asm_mod_q
2039     attribute_may_alias
2040     attribute_packed
2041     blocks_extension
2042     ebp_available
2043     ebx_available
2044     gnu_as
2045     gnu_windres
2046     ibm_asm
2047     inline_asm_direct_symbol_refs
2048     inline_asm_labels
2049     inline_asm_nonlocal_labels
2050     pragma_deprecated
2051     rsync_contimeout
2052     symver_asm_label
2053     symver_gnu_asm
2054     vfp_args
2055     xform_asm
2056     xmm_clobbers
2057 "
2058
2059 TYPES_LIST="
2060     CONDITION_VARIABLE_Ptr
2061     socklen_t
2062     struct_addrinfo
2063     struct_group_source_req
2064     struct_ip_mreq_source
2065     struct_ipv6_mreq
2066     struct_msghdr_msg_flags
2067     struct_pollfd
2068     struct_rusage_ru_maxrss
2069     struct_sctp_event_subscribe
2070     struct_sockaddr_in6
2071     struct_sockaddr_sa_len
2072     struct_sockaddr_storage
2073     struct_stat_st_mtim_tv_nsec
2074     struct_v4l2_frmivalenum_discrete
2075 "
2076
2077 HAVE_LIST="
2078     $ARCH_EXT_LIST
2079     $(add_suffix _external $ARCH_EXT_LIST)
2080     $(add_suffix _inline   $ARCH_EXT_LIST)
2081     $ARCH_FEATURES
2082     $ATOMICS_LIST
2083     $BUILTIN_LIST
2084     $COMPLEX_FUNCS
2085     $HAVE_LIST_CMDLINE
2086     $HAVE_LIST_PUB
2087     $HEADERS_LIST
2088     $INTRINSICS_LIST
2089     $MATH_FUNCS
2090     $SYSTEM_FUNCS
2091     $THREADS_LIST
2092     $TOOLCHAIN_FEATURES
2093     $TYPES_LIST
2094     atomics_native
2095     dos_paths
2096     libc_msvcrt
2097     makeinfo
2098     makeinfo_html
2099     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2100     perl
2101     pod2man
2102     section_data_rel_ro
2103     texi2html
2104     threads
2105     uwp
2106     vaapi_drm
2107     vaapi_x11
2108     vdpau_x11
2109     winrt
2110 "
2111
2112 # options emitted with CONFIG_ prefix but not available on the command line
2113 CONFIG_EXTRA="
2114     aandcttables
2115     ac3dsp
2116     audio_frame_queue
2117     audiodsp
2118     blockdsp
2119     bswapdsp
2120     cabac
2121     dirac_parse
2122     dvprofile
2123     exif
2124     faandct
2125     faanidct
2126     fdctdsp
2127     flacdsp
2128     fmtconvert
2129     frame_thread_encoder
2130     g722dsp
2131     golomb
2132     gplv3
2133     h263dsp
2134     h264chroma
2135     h264dsp
2136     h264parse
2137     h264pred
2138     h264qpel
2139     hevcparse
2140     hpeldsp
2141     huffman
2142     huffyuvdsp
2143     huffyuvencdsp
2144     idctdsp
2145     iirfilter
2146     mdct15
2147     intrax8
2148     iso_media
2149     ividsp
2150     jpegtables
2151     lgplv3
2152     libx262
2153     llauddsp
2154     llviddsp
2155     llvidencdsp
2156     lpc
2157     lzf
2158     me_cmp
2159     mpeg_er
2160     mpegaudio
2161     mpegaudiodsp
2162     mpegaudioheader
2163     mpegvideo
2164     mpegvideoenc
2165     mss34dsp
2166     pixblockdsp
2167     qpeldsp
2168     qsv
2169     qsvdec
2170     qsvenc
2171     rangecoder
2172     riffdec
2173     riffenc
2174     rtpdec
2175     rtpenc_chain
2176     rv34dsp
2177     sinewin
2178     snappy
2179     srtp
2180     startcode
2181     texturedsp
2182     texturedspenc
2183     tpeldsp
2184     vaapi_encode
2185     vc1dsp
2186     videodsp
2187     vp3dsp
2188     vp56dsp
2189     vp8dsp
2190     wma_freqs
2191     wmv2dsp
2192 "
2193
2194 CMDLINE_SELECT="
2195     $ARCH_EXT_LIST
2196     $CONFIG_LIST
2197     $HAVE_LIST_CMDLINE
2198     $THREADS_LIST
2199     asm
2200     cross_compile
2201     debug
2202     extra_warnings
2203     logging
2204     lto
2205     optimizations
2206     rpath
2207     stripping
2208 "
2209
2210 PATHS_LIST="
2211     bindir
2212     datadir
2213     docdir
2214     incdir
2215     libdir
2216     mandir
2217     pkgconfigdir
2218     prefix
2219     shlibdir
2220     install_name_dir
2221 "
2222
2223 CMDLINE_SET="
2224     $PATHS_LIST
2225     ar
2226     arch
2227     as
2228     assert_level
2229     build_suffix
2230     cc
2231     objcc
2232     cpu
2233     cross_prefix
2234     custom_allocator
2235     cxx
2236     dep_cc
2237     doxygen
2238     env
2239     extra_version
2240     gas
2241     host_cc
2242     host_cflags
2243     host_extralibs
2244     host_ld
2245     host_ldflags
2246     host_os
2247     ignore_tests
2248     install
2249     ld
2250     ln_s
2251     logfile
2252     malloc_prefix
2253     nm
2254     optflags
2255     nvccflags
2256     pkg_config
2257     pkg_config_flags
2258     progs_suffix
2259     random_seed
2260     ranlib
2261     samples
2262     strip
2263     sws_max_filter_size
2264     sysinclude
2265     sysroot
2266     target_exec
2267     target_os
2268     target_path
2269     target_samples
2270     tempprefix
2271     toolchain
2272     valgrind
2273     x86asmexe
2274 "
2275
2276 CMDLINE_APPEND="
2277     extra_cflags
2278     extra_cxxflags
2279     extra_objcflags
2280     host_cppflags
2281 "
2282
2283 # code dependency declarations
2284
2285 # architecture extensions
2286
2287 armv5te_deps="arm"
2288 armv6_deps="arm"
2289 armv6t2_deps="arm"
2290 armv8_deps="aarch64"
2291 neon_deps_any="aarch64 arm"
2292 intrinsics_neon_deps="neon"
2293 vfp_deps_any="aarch64 arm"
2294 vfpv3_deps="vfp"
2295 setend_deps="arm"
2296
2297 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2298
2299 loongson2_deps="mips"
2300 loongson3_deps="mips"
2301 mipsfpu_deps="mips"
2302 mipsdsp_deps="mips"
2303 mipsdspr2_deps="mips"
2304 mips32r2_deps="mips"
2305 mips32r5_deps="mips"
2306 mips32r6_deps="mips"
2307 mips64r2_deps="mips"
2308 mips64r6_deps="mips"
2309 msa_deps="mipsfpu"
2310 mmi_deps="mips"
2311
2312 altivec_deps="ppc"
2313 dcbzl_deps="ppc"
2314 ldbrx_deps="ppc"
2315 ppc4xx_deps="ppc"
2316 vsx_deps="altivec"
2317 power8_deps="vsx"
2318
2319 cpunop_deps="i686"
2320 x86_64_select="i686"
2321 x86_64_suggest="fast_cmov"
2322
2323 amd3dnow_deps="mmx"
2324 amd3dnowext_deps="amd3dnow"
2325 i686_deps="x86"
2326 mmx_deps="x86"
2327 mmxext_deps="mmx"
2328 sse_deps="mmxext"
2329 sse2_deps="sse"
2330 sse3_deps="sse2"
2331 ssse3_deps="sse3"
2332 sse4_deps="ssse3"
2333 sse42_deps="sse4"
2334 aesni_deps="sse42"
2335 avx_deps="sse42"
2336 xop_deps="avx"
2337 fma3_deps="avx"
2338 fma4_deps="avx"
2339 avx2_deps="avx"
2340
2341 mmx_external_deps="x86asm"
2342 mmx_inline_deps="inline_asm"
2343 mmx_suggest="mmx_external mmx_inline"
2344
2345 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2346     eval dep=\$${ext}_deps
2347     eval ${ext}_external_deps='"${dep}_external"'
2348     eval ${ext}_inline_deps='"${dep}_inline"'
2349     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2350 done
2351
2352 aligned_stack_if_any="aarch64 ppc x86"
2353 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2354 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2355 fast_unaligned_if_any="aarch64 ppc x86"
2356 simd_align_16_if_any="altivec neon sse"
2357 simd_align_32_if_any="avx"
2358
2359 # system capabilities
2360 symver_if_any="symver_asm_label symver_gnu_asm"
2361 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2362
2363 # threading support
2364 atomics_gcc_if="sync_val_compare_and_swap"
2365 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2366 atomics_win32_if="MemoryBarrier"
2367 atomics_native_if_any="$ATOMICS_LIST"
2368 w32threads_deps="atomics_native"
2369 threads_if_any="$THREADS_LIST"
2370
2371 # subsystems
2372 dct_select="rdft"
2373 dirac_parse_select="golomb"
2374 error_resilience_select="me_cmp"
2375 faandct_deps="faan fdctdsp"
2376 faanidct_deps="faan idctdsp"
2377 h264dsp_select="startcode"
2378 hevcparse_select="golomb"
2379 frame_thread_encoder_deps="encoders threads"
2380 intrax8_select="blockdsp idctdsp"
2381 mdct_select="fft"
2382 mdct15_select="fft"
2383 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2384 mpeg_er_select="error_resilience"
2385 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2386 mpegaudiodsp_select="dct"
2387 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2388 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2389 vc1dsp_select="h264chroma qpeldsp startcode"
2390 rdft_select="fft"
2391
2392 # decoders / encoders
2393 aac_decoder_select="mdct15 mdct sinewin"
2394 aac_fixed_decoder_select="mdct sinewin"
2395 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2396 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2397 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2398 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2399 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2400 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2401 adpcm_g722_decoder_select="g722dsp"
2402 adpcm_g722_encoder_select="g722dsp"
2403 aic_decoder_select="golomb idctdsp"
2404 alac_encoder_select="lpc"
2405 als_decoder_select="bswapdsp"
2406 amrnb_decoder_select="lsp"
2407 amrwb_decoder_select="lsp"
2408 amv_decoder_select="sp5x_decoder exif"
2409 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2410 ape_decoder_select="bswapdsp llauddsp"
2411 apng_decoder_select="zlib"
2412 apng_encoder_select="llvidencdsp zlib"
2413 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2414 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2415 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2416 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2417 atrac1_decoder_select="mdct sinewin"
2418 atrac3_decoder_select="mdct"
2419 atrac3p_decoder_select="mdct sinewin"
2420 avrn_decoder_select="exif jpegtables"
2421 bink_decoder_select="blockdsp hpeldsp"
2422 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2423 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2424 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2425 clearvideo_decoder_select="idctdsp"
2426 cllc_decoder_select="bswapdsp"
2427 comfortnoise_encoder_select="lpc"
2428 cook_decoder_select="audiodsp mdct sinewin"
2429 cscd_decoder_select="lzo"
2430 cscd_decoder_suggest="zlib"
2431 dca_decoder_select="mdct"
2432 dds_decoder_select="texturedsp"
2433 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2434 dnxhd_decoder_select="blockdsp idctdsp"
2435 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2436 dolby_e_decoder_select="mdct"
2437 dvvideo_decoder_select="dvprofile idctdsp"
2438 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2439 dxa_decoder_select="zlib"
2440 dxv_decoder_select="lzf texturedsp"
2441 eac3_decoder_select="ac3_decoder"
2442 eac3_encoder_select="ac3_encoder"
2443 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2444 eatgq_decoder_select="aandcttables"
2445 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2446 exr_decoder_select="zlib"
2447 ffv1_decoder_select="rangecoder"
2448 ffv1_encoder_select="rangecoder"
2449 ffvhuff_decoder_select="huffyuv_decoder"
2450 ffvhuff_encoder_select="huffyuv_encoder"
2451 fic_decoder_select="golomb"
2452 flac_decoder_select="flacdsp"
2453 flac_encoder_select="bswapdsp flacdsp lpc"
2454 flashsv2_decoder_select="zlib"
2455 flashsv2_encoder_select="zlib"
2456 flashsv_decoder_select="zlib"
2457 flashsv_encoder_select="zlib"
2458 flv_decoder_select="h263_decoder"
2459 flv_encoder_select="h263_encoder"
2460 fourxm_decoder_select="blockdsp bswapdsp"
2461 fraps_decoder_select="bswapdsp huffman"
2462 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2463 g729_decoder_select="audiodsp"
2464 h261_decoder_select="mpegvideo"
2465 h261_encoder_select="aandcttables mpegvideoenc"
2466 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2467 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2468 h263i_decoder_select="h263_decoder"
2469 h263p_decoder_select="h263_decoder"
2470 h263p_encoder_select="h263_encoder"
2471 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2472 h264_decoder_suggest="error_resilience"
2473 hap_decoder_select="snappy texturedsp"
2474 hap_encoder_deps="libsnappy"
2475 hap_encoder_select="texturedspenc"
2476 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2477 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2478 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2479 iac_decoder_select="imc_decoder"
2480 imc_decoder_select="bswapdsp fft mdct sinewin"
2481 indeo3_decoder_select="hpeldsp"
2482 indeo4_decoder_select="ividsp"
2483 indeo5_decoder_select="ividsp"
2484 interplay_video_decoder_select="hpeldsp"
2485 jpegls_decoder_select="mjpeg_decoder"
2486 jv_decoder_select="blockdsp"
2487 lagarith_decoder_select="llviddsp"
2488 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2489 magicyuv_decoder_select="llviddsp"
2490 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2491 metasound_decoder_select="lsp mdct sinewin"
2492 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2493 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2494 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2495 mjpegb_decoder_select="mjpeg_decoder"
2496 mlp_decoder_select="mlp_parser"
2497 mlp_encoder_select="lpc"
2498 motionpixels_decoder_select="bswapdsp"
2499 mp1_decoder_select="mpegaudio"
2500 mp1float_decoder_select="mpegaudio"
2501 mp2_decoder_select="mpegaudio"
2502 mp2float_decoder_select="mpegaudio"
2503 mp3_decoder_select="mpegaudio"
2504 mp3adu_decoder_select="mpegaudio"
2505 mp3adufloat_decoder_select="mpegaudio"
2506 mp3float_decoder_select="mpegaudio"
2507 mp3on4_decoder_select="mpegaudio"
2508 mp3on4float_decoder_select="mpegaudio"
2509 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2510 mpc8_decoder_select="mpegaudiodsp"
2511 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2512 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2513 mpegvideo_decoder_select="mpegvideo"
2514 mpeg1video_decoder_select="mpegvideo"
2515 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2516 mpeg2video_decoder_select="mpegvideo"
2517 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2518 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2519 mpeg4_encoder_select="h263_encoder"
2520 msa1_decoder_select="mss34dsp"
2521 mscc_decoder_select="zlib"
2522 msmpeg4v1_decoder_select="h263_decoder"
2523 msmpeg4v2_decoder_select="h263_decoder"
2524 msmpeg4v2_encoder_select="h263_encoder"
2525 msmpeg4v3_decoder_select="h263_decoder"
2526 msmpeg4v3_encoder_select="h263_encoder"
2527 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2528 mts2_decoder_select="mss34dsp"
2529 mxpeg_decoder_select="mjpeg_decoder"
2530 nellymoser_decoder_select="mdct sinewin"
2531 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2532 nuv_decoder_select="idctdsp lzo"
2533 on2avc_decoder_select="mdct"
2534 opus_decoder_deps="swresample"
2535 opus_decoder_select="mdct15"
2536 opus_encoder_select="audio_frame_queue mdct15"
2537 png_decoder_select="zlib"
2538 png_encoder_select="llvidencdsp zlib"
2539 prores_decoder_select="blockdsp idctdsp"
2540 prores_encoder_select="fdctdsp"
2541 qcelp_decoder_select="lsp"
2542 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2543 ra_144_decoder_select="audiodsp"
2544 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2545 ralf_decoder_select="golomb"
2546 rawvideo_decoder_select="bswapdsp"
2547 rscc_decoder_select="zlib"
2548 rtjpeg_decoder_select="me_cmp"
2549 rv10_decoder_select="h263_decoder"
2550 rv10_encoder_select="h263_encoder"
2551 rv20_decoder_select="h263_decoder"
2552 rv20_encoder_select="h263_encoder"
2553 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2554 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2555 screenpresso_decoder_select="zlib"
2556 shorten_decoder_select="bswapdsp"
2557 sipr_decoder_select="lsp"
2558 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2559 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2560 sonic_decoder_select="golomb rangecoder"
2561 sonic_encoder_select="golomb rangecoder"
2562 sonic_ls_encoder_select="golomb rangecoder"
2563 sp5x_decoder_select="mjpeg_decoder"
2564 srgc_decoder_select="zlib"
2565 svq1_decoder_select="hpeldsp"
2566 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2567 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2568 svq3_decoder_suggest="zlib"
2569 tak_decoder_select="audiodsp"
2570 tdsc_decoder_select="zlib mjpeg_decoder"
2571 theora_decoder_select="vp3_decoder"
2572 thp_decoder_select="mjpeg_decoder"
2573 tiff_decoder_suggest="zlib lzma"
2574 tiff_encoder_suggest="zlib"
2575 truehd_decoder_select="mlp_parser"
2576 truehd_encoder_select="lpc"
2577 truemotion2_decoder_select="bswapdsp"
2578 truespeech_decoder_select="bswapdsp"
2579 tscc_decoder_select="zlib"
2580 twinvq_decoder_select="mdct lsp sinewin"
2581 txd_decoder_select="texturedsp"
2582 utvideo_decoder_select="bswapdsp llviddsp"
2583 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2584 vble_decoder_select="llviddsp"
2585 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2586 vc1_qsv_decoder_deps="libmfx"
2587 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2588 vc1image_decoder_select="vc1_decoder"
2589 vorbis_decoder_select="mdct"
2590 vorbis_encoder_select="mdct"
2591 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2592 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2593 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2594 vp6a_decoder_select="vp6_decoder"
2595 vp6f_decoder_select="vp6_decoder"
2596 vp7_decoder_select="h264pred videodsp vp8dsp"
2597 vp8_decoder_select="h264pred videodsp vp8dsp"
2598 vp9_decoder_select="videodsp vp9_parser"
2599 webp_decoder_select="vp8_decoder exif"
2600 wmalossless_decoder_select="llauddsp"
2601 wmapro_decoder_select="mdct sinewin wma_freqs"
2602 wmav1_decoder_select="mdct sinewin wma_freqs"
2603 wmav1_encoder_select="mdct sinewin wma_freqs"
2604 wmav2_decoder_select="mdct sinewin wma_freqs"
2605 wmav2_encoder_select="mdct sinewin wma_freqs"
2606 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2607 wmv1_decoder_select="h263_decoder"
2608 wmv1_encoder_select="h263_encoder"
2609 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2610 wmv2_encoder_select="h263_encoder wmv2dsp"
2611 wmv3_decoder_select="vc1_decoder"
2612 wmv3image_decoder_select="wmv3_decoder"
2613 xma1_decoder_select="wmapro_decoder"
2614 xma2_decoder_select="wmapro_decoder"
2615 zerocodec_decoder_select="zlib"
2616 zlib_decoder_select="zlib"
2617 zlib_encoder_select="zlib"
2618 zmbv_decoder_select="zlib"
2619 zmbv_encoder_select="zlib"
2620
2621 # hardware accelerators
2622 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2623 cuda_deps_any="dlopen LoadLibrary"
2624 cuvid_deps="cuda"
2625 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2626 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2627 dxva2_extralibs="-luser32"
2628 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2629 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2630 vda_deps="vda_framework pthreads"
2631 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2632 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2633 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2634 xvmc_deps="X11_extensions_XvMClib_h"
2635
2636 h263_vaapi_hwaccel_deps="vaapi"
2637 h263_vaapi_hwaccel_select="h263_decoder"
2638 h263_videotoolbox_hwaccel_deps="videotoolbox"
2639 h263_videotoolbox_hwaccel_select="h263_decoder"
2640 h264_cuvid_hwaccel_deps="cuda cuvid"
2641 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2642 h264_d3d11va_hwaccel_deps="d3d11va"
2643 h264_d3d11va_hwaccel_select="h264_decoder"
2644 h264_d3d11va2_hwaccel_deps="d3d11va"
2645 h264_d3d11va2_hwaccel_select="h264_decoder"
2646 h264_dxva2_hwaccel_deps="dxva2"
2647 h264_dxva2_hwaccel_select="h264_decoder"
2648 h264_mediacodec_hwaccel_deps="mediacodec"
2649 h264_mmal_hwaccel_deps="mmal"
2650 h264_qsv_hwaccel_deps="libmfx"
2651 h264_vaapi_hwaccel_deps="vaapi"
2652 h264_vaapi_hwaccel_select="h264_decoder"
2653 h264_vda_hwaccel_deps="vda"
2654 h264_vda_hwaccel_select="h264_decoder"
2655 h264_vda_old_hwaccel_deps="vda"
2656 h264_vda_old_hwaccel_select="h264_decoder"
2657 h264_vdpau_hwaccel_deps="vdpau"
2658 h264_vdpau_hwaccel_select="h264_decoder"
2659 h264_videotoolbox_hwaccel_deps="videotoolbox"
2660 h264_videotoolbox_hwaccel_select="h264_decoder"
2661 hevc_cuvid_hwaccel_deps="cuda cuvid"
2662 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2663 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2664 hevc_d3d11va_hwaccel_select="hevc_decoder"
2665 hevc_mediacodec_hwaccel_deps="mediacodec"
2666 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2667 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2668 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2669 hevc_dxva2_hwaccel_select="hevc_decoder"
2670 hevc_qsv_hwaccel_deps="libmfx"
2671 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2672 hevc_vaapi_hwaccel_select="hevc_decoder"
2673 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2674 hevc_vdpau_hwaccel_select="hevc_decoder"
2675 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2676 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2677 mpeg_xvmc_hwaccel_deps="xvmc"
2678 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2679 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2680 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2681 mpeg1_vdpau_hwaccel_deps="vdpau"
2682 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2683 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2684 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2685 mpeg1_xvmc_hwaccel_deps="xvmc"
2686 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2687 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2688 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2689 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2690 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2691 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2692 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2693 mpeg2_dxva2_hwaccel_deps="dxva2"
2694 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2695 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2696 mpeg2_mmal_hwaccel_deps="mmal"
2697 mpeg2_qsv_hwaccel_deps="libmfx"
2698 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2699 mpeg2_vaapi_hwaccel_deps="vaapi"
2700 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2701 mpeg2_vdpau_hwaccel_deps="vdpau"
2702 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2703 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2704 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2705 mpeg2_xvmc_hwaccel_deps="xvmc"
2706 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2707 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2708 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2709 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2710 mpeg4_mmal_hwaccel_deps="mmal"
2711 mpeg4_vaapi_hwaccel_deps="vaapi"
2712 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2713 mpeg4_vdpau_hwaccel_deps="vdpau"
2714 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2715 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2716 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2717 vc1_cuvid_hwaccel_deps="cuda cuvid"
2718 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2719 vc1_d3d11va_hwaccel_deps="d3d11va"
2720 vc1_d3d11va_hwaccel_select="vc1_decoder"
2721 vc1_d3d11va2_hwaccel_deps="d3d11va"
2722 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2723 vc1_dxva2_hwaccel_deps="dxva2"
2724 vc1_dxva2_hwaccel_select="vc1_decoder"
2725 vc1_mmal_hwaccel_deps="mmal"
2726 vc1_qsv_hwaccel_deps="libmfx"
2727 vc1_qsv_hwaccel_select="qsvdec_vc1"
2728 vc1_vaapi_hwaccel_deps="vaapi"
2729 vc1_vaapi_hwaccel_select="vc1_decoder"
2730 vc1_vdpau_hwaccel_deps="vdpau"
2731 vc1_vdpau_hwaccel_select="vc1_decoder"
2732 vp8_cuvid_hwaccel_deps="cuda cuvid"
2733 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2734 vp9_cuvid_hwaccel_deps="cuda cuvid"
2735 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2736 vp8_mediacodec_hwaccel_deps="mediacodec"
2737 vp8_qsv_hwaccel_deps="libmfx"
2738 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2739 vp9_d3d11va_hwaccel_select="vp9_decoder"
2740 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2741 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2742 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2743 vp9_dxva2_hwaccel_select="vp9_decoder"
2744 vp9_mediacodec_hwaccel_deps="mediacodec"
2745 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2746 vp9_vaapi_hwaccel_select="vp9_decoder"
2747 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2748 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2749 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2750 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2751 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2752
2753 # hardware-accelerated codecs
2754 omx_deps="dlopen pthreads"
2755 omx_extralibs='$ldl'
2756 omx_rpi_select="omx"
2757 qsvdec_select="qsv"
2758 qsvenc_select="qsv"
2759 vaapi_encode_deps="vaapi"
2760 v4l2_m2m_deps_any="linux_videodev2_h"
2761
2762 hwupload_cuda_filter_deps="cuda"
2763 scale_npp_filter_deps="cuda libnpp"
2764 scale_cuda_filter_deps="cuda_sdk"
2765 thumbnail_cuda_filter_deps="cuda_sdk"
2766
2767 nvenc_deps="cuda"
2768 nvenc_deps_any="dlopen LoadLibrary"
2769 nvenc_encoder_deps="nvenc"
2770
2771 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2772 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2773 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2774 h264_cuvid_decoder_deps="cuda cuvid"
2775 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2776 h264_mediacodec_decoder_deps="mediacodec"
2777 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2778 h264_mmal_decoder_deps="mmal"
2779 h264_nvenc_encoder_deps="nvenc"
2780 h264_omx_encoder_deps="omx"
2781 h264_qsv_decoder_deps="libmfx"
2782 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2783 h264_qsv_encoder_deps="libmfx"
2784 h264_qsv_encoder_select="qsvenc"
2785 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2786 h264_vaapi_encoder_select="vaapi_encode golomb"
2787 h264_vda_decoder_deps="vda"
2788 h264_vda_decoder_select="h264_decoder"
2789 h264_vdpau_decoder_deps="vdpau"
2790 h264_vdpau_decoder_select="h264_decoder"
2791 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2792 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2793 hevc_cuvid_decoder_deps="cuda cuvid"
2794 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2795 hevc_mediacodec_decoder_deps="mediacodec"
2796 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2797 hevc_nvenc_encoder_deps="nvenc"
2798 hevc_qsv_decoder_deps="libmfx"
2799 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2800 hevc_qsv_encoder_deps="libmfx"
2801 hevc_qsv_encoder_select="hevcparse qsvenc"
2802 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2803 hevc_vaapi_encoder_select="vaapi_encode golomb"
2804 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2805 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2806 mjpeg_cuvid_decoder_deps="cuda cuvid"
2807 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2808 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2809 mpeg1_cuvid_decoder_deps="cuda cuvid"
2810 mpeg1_vdpau_decoder_deps="vdpau"
2811 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2812 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2813 mpeg2_crystalhd_decoder_select="crystalhd"
2814 mpeg2_cuvid_decoder_deps="cuda cuvid"
2815 mpeg2_mmal_decoder_deps="mmal"
2816 mpeg2_mediacodec_decoder_deps="mediacodec"
2817 mpeg2_qsv_decoder_deps="libmfx"
2818 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2819 mpeg2_qsv_encoder_deps="libmfx"
2820 mpeg2_qsv_encoder_select="qsvenc"
2821 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2822 mpeg2_vaapi_encoder_select="vaapi_encode"
2823 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2824 mpeg4_crystalhd_decoder_select="crystalhd"
2825 mpeg4_cuvid_decoder_deps="cuda cuvid"
2826 mpeg4_mediacodec_decoder_deps="mediacodec"
2827 mpeg4_mmal_decoder_deps="mmal"
2828 mpeg4_omx_encoder_deps="omx"
2829 mpeg4_vdpau_decoder_deps="vdpau"
2830 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2831 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2832 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2833 mpeg_vdpau_decoder_deps="vdpau"
2834 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2835 msmpeg4_crystalhd_decoder_select="crystalhd"
2836 nvenc_h264_encoder_select="h264_nvenc_encoder"
2837 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2838 vc1_crystalhd_decoder_select="crystalhd"
2839 vc1_cuvid_decoder_deps="cuda cuvid"
2840 vc1_mmal_decoder_deps="mmal"
2841 vc1_vdpau_decoder_deps="vdpau"
2842 vc1_vdpau_decoder_select="vc1_decoder"
2843 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2844 vp8_cuvid_decoder_deps="cuda cuvid"
2845 vp8_mediacodec_decoder_deps="mediacodec"
2846 vp8_qsv_decoder_deps="libmfx"
2847 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2848 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2849 vp8_vaapi_encoder_select="vaapi_encode"
2850 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2851 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2852 vp9_cuvid_decoder_deps="cuda cuvid"
2853 vp9_mediacodec_decoder_deps="mediacodec"
2854 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2855 vp9_vaapi_encoder_select="vaapi_encode"
2856 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2857 wmv3_crystalhd_decoder_select="crystalhd"
2858 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2859
2860 # parsers
2861 h264_parser_select="golomb h264dsp h264parse"
2862 hevc_parser_select="hevcparse"
2863 mpegaudio_parser_select="mpegaudioheader"
2864 mpegvideo_parser_select="mpegvideo"
2865 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2866 vc1_parser_select="vc1dsp"
2867
2868 # bitstream_filters
2869 mjpeg2jpeg_bsf_select="jpegtables"
2870
2871 # external libraries
2872 aac_at_decoder_deps="audiotoolbox"
2873 ac3_at_decoder_deps="audiotoolbox"
2874 ac3_at_decoder_select="ac3_parser"
2875 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2876 alac_at_decoder_deps="audiotoolbox"
2877 amr_nb_at_decoder_deps="audiotoolbox"
2878 avisynth_deps_any="dlopen LoadLibrary"
2879 avisynth_demuxer_deps="avisynth"
2880 avisynth_demuxer_select="riffdec"
2881 eac3_at_decoder_deps="audiotoolbox"
2882 eac3_at_decoder_select="ac3_parser"
2883 gsm_ms_at_decoder_deps="audiotoolbox"
2884 ilbc_at_decoder_deps="audiotoolbox"
2885 mp1_at_decoder_deps="audiotoolbox"
2886 mp2_at_decoder_deps="audiotoolbox"
2887 mp3_at_decoder_deps="audiotoolbox"
2888 mp1_at_decoder_select="mpegaudioheader"
2889 mp2_at_decoder_select="mpegaudioheader"
2890 mp3_at_decoder_select="mpegaudioheader"
2891 pcm_alaw_at_decoder_deps="audiotoolbox"
2892 pcm_mulaw_at_decoder_deps="audiotoolbox"
2893 qdmc_at_decoder_deps="audiotoolbox"
2894 qdm2_at_decoder_deps="audiotoolbox"
2895 aac_at_encoder_deps="audiotoolbox"
2896 aac_at_encoder_select="audio_frame_queue"
2897 alac_at_encoder_deps="audiotoolbox"
2898 alac_at_encoder_select="audio_frame_queue"
2899 ilbc_at_encoder_deps="audiotoolbox"
2900 ilbc_at_encoder_select="audio_frame_queue"
2901 pcm_alaw_at_encoder_deps="audiotoolbox"
2902 pcm_alaw_at_encoder_select="audio_frame_queue"
2903 pcm_mulaw_at_encoder_deps="audiotoolbox"
2904 pcm_mulaw_at_encoder_select="audio_frame_queue"
2905 chromaprint_muxer_deps="chromaprint"
2906 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2907 libcelt_decoder_deps="libcelt"
2908 libfdk_aac_decoder_deps="libfdk_aac"
2909 libfdk_aac_encoder_deps="libfdk_aac"
2910 libfdk_aac_encoder_select="audio_frame_queue"
2911 libgme_demuxer_deps="libgme"
2912 libgsm_decoder_deps="libgsm"
2913 libgsm_encoder_deps="libgsm"
2914 libgsm_ms_decoder_deps="libgsm"
2915 libgsm_ms_encoder_deps="libgsm"
2916 libilbc_decoder_deps="libilbc"
2917 libilbc_encoder_deps="libilbc"
2918 libkvazaar_encoder_deps="libkvazaar"
2919 libmodplug_demuxer_deps="libmodplug"
2920 libmp3lame_encoder_deps="libmp3lame"
2921 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2922 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2923 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2924 libopencore_amrnb_encoder_select="audio_frame_queue"
2925 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2926 libopenh264_decoder_deps="libopenh264"
2927 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2928 libopenh264_encoder_deps="libopenh264"
2929 libopenjpeg_decoder_deps="libopenjpeg"
2930 libopenjpeg_encoder_deps="libopenjpeg"
2931 libopenmpt_demuxer_deps="libopenmpt"
2932 libopus_decoder_deps="libopus"
2933 libopus_encoder_deps="libopus"
2934 libopus_encoder_select="audio_frame_queue"
2935 librsvg_decoder_deps="librsvg"
2936 libshine_encoder_deps="libshine"
2937 libshine_encoder_select="audio_frame_queue"
2938 libspeex_decoder_deps="libspeex"
2939 libspeex_encoder_deps="libspeex"
2940 libspeex_encoder_select="audio_frame_queue"
2941 libtheora_encoder_deps="libtheora"
2942 libtwolame_encoder_deps="libtwolame"
2943 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2944 libvorbis_decoder_deps="libvorbis"
2945 libvorbis_encoder_deps="libvorbis"
2946 libvorbis_encoder_select="audio_frame_queue"
2947 libvpx_vp8_decoder_deps="libvpx"
2948 libvpx_vp8_encoder_deps="libvpx"
2949 libvpx_vp9_decoder_deps="libvpx"
2950 libvpx_vp9_encoder_deps="libvpx"
2951 libwavpack_encoder_deps="libwavpack"
2952 libwavpack_encoder_select="audio_frame_queue"
2953 libwebp_encoder_deps="libwebp"
2954 libwebp_anim_encoder_deps="libwebp"
2955 libx262_encoder_deps="libx262"
2956 libx264_encoder_deps="libx264"
2957 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2958 libx264rgb_encoder_select="libx264_encoder"
2959 libx265_encoder_deps="libx265"
2960 libxavs_encoder_deps="libxavs"
2961 libxvid_encoder_deps="libxvid"
2962 libzvbi_teletext_decoder_deps="libzvbi"
2963 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2964 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2965 videotoolbox_encoder_suggest="vda_framework"
2966
2967 # demuxers / muxers
2968 ac3_demuxer_select="ac3_parser"
2969 aiff_muxer_select="iso_media"
2970 asf_demuxer_select="riffdec"
2971 asf_o_demuxer_select="riffdec"
2972 asf_muxer_select="riffenc"
2973 asf_stream_muxer_select="asf_muxer"
2974 avi_demuxer_select="iso_media riffdec exif"
2975 avi_muxer_select="riffenc"
2976 caf_demuxer_select="iso_media riffdec"
2977 caf_muxer_select="iso_media"
2978 dash_muxer_select="mp4_muxer"
2979 dash_demuxer_deps="libxml2"
2980 dirac_demuxer_select="dirac_parser"
2981 dts_demuxer_select="dca_parser"
2982 dtshd_demuxer_select="dca_parser"
2983 dv_demuxer_select="dvprofile"
2984 dv_muxer_select="dvprofile"
2985 dxa_demuxer_select="riffdec"
2986 eac3_demuxer_select="ac3_parser"
2987 f4v_muxer_select="mov_muxer"
2988 fifo_muxer_deps="threads"
2989 flac_demuxer_select="flac_parser"
2990 hds_muxer_select="flv_muxer"
2991 hls_muxer_select="mpegts_muxer"
2992 image2_alias_pix_demuxer_select="image2_demuxer"
2993 image2_brender_pix_demuxer_select="image2_demuxer"
2994 ipod_muxer_select="mov_muxer"
2995 ismv_muxer_select="mov_muxer"
2996 matroska_audio_muxer_select="matroska_muxer"
2997 matroska_demuxer_select="iso_media riffdec"
2998 matroska_demuxer_suggest="bzlib lzo zlib"
2999 matroska_muxer_select="iso_media riffenc"
3000 mmf_muxer_select="riffenc"
3001 mov_demuxer_select="iso_media riffdec"
3002 mov_demuxer_suggest="zlib"
3003 mov_muxer_select="iso_media riffenc rtpenc_chain"
3004 mp3_demuxer_select="mpegaudio_parser"
3005 mp3_muxer_select="mpegaudioheader"
3006 mp4_muxer_select="mov_muxer"
3007 mpegts_demuxer_select="iso_media"
3008 mpegts_muxer_select="adts_muxer latm_muxer"
3009 mpegtsraw_demuxer_select="mpegts_demuxer"
3010 mxf_d10_muxer_select="mxf_muxer"
3011 mxf_opatom_muxer_select="mxf_muxer"
3012 nut_muxer_select="riffenc"
3013 nuv_demuxer_select="riffdec"
3014 oga_muxer_select="ogg_muxer"
3015 ogg_demuxer_select="dirac_parse"
3016 ogv_muxer_select="ogg_muxer"
3017 opus_muxer_select="ogg_muxer"
3018 psp_muxer_select="mov_muxer"
3019 rtp_demuxer_select="sdp_demuxer"
3020 rtp_muxer_select="golomb"
3021 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3022 rtsp_demuxer_select="http_protocol rtpdec"
3023 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3024 sap_demuxer_select="sdp_demuxer"
3025 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3026 sdp_demuxer_select="rtpdec"
3027 smoothstreaming_muxer_select="ismv_muxer"
3028 spdif_muxer_select="aac_parser"
3029 spx_muxer_select="ogg_muxer"
3030 swf_demuxer_suggest="zlib"
3031 tak_demuxer_select="tak_parser"
3032 tg2_muxer_select="mov_muxer"
3033 tgp_muxer_select="mov_muxer"
3034 vobsub_demuxer_select="mpegps_demuxer"
3035 w64_demuxer_select="wav_demuxer"
3036 w64_muxer_select="wav_muxer"
3037 wav_demuxer_select="riffdec"
3038 wav_muxer_select="riffenc"
3039 webm_muxer_select="iso_media riffenc"
3040 webm_dash_manifest_demuxer_select="matroska_demuxer"
3041 wtv_demuxer_select="mpegts_demuxer riffdec"
3042 wtv_muxer_select="mpegts_muxer riffenc"
3043 xmv_demuxer_select="riffdec"
3044 xwma_demuxer_select="riffdec"
3045
3046 # indevs / outdevs
3047 alsa_indev_deps="alsa"
3048 alsa_outdev_deps="alsa"
3049 avfoundation_indev_deps="avfoundation pthreads"
3050 avfoundation_indev_extralibs="-framework Foundation -framework CoreVideo -framework CoreMedia"
3051 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3052 caca_outdev_deps="libcaca"
3053 decklink_indev_deps="decklink threads"
3054 decklink_indev_extralibs="-lstdc++"
3055 decklink_outdev_deps="decklink threads"
3056 decklink_outdev_extralibs="-lstdc++"
3057 libndi_newtek_indev_deps="libndi_newtek"
3058 libndi_newtek_indev_extralibs="-lndi"
3059 libndi_newtek_outdev_deps="libndi_newtek"
3060 libndi_newtek_outdev_extralibs="-lndi"
3061 dshow_indev_deps="IBaseFilter"
3062 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3063 dv1394_indev_deps="dv1394"
3064 dv1394_indev_select="dv_demuxer"
3065 fbdev_indev_deps="linux_fb_h"
3066 fbdev_outdev_deps="linux_fb_h"
3067 gdigrab_indev_deps="CreateDIBSection"
3068 gdigrab_indev_extralibs="-lgdi32"
3069 gdigrab_indev_select="bmp_decoder"
3070 iec61883_indev_deps="libiec61883"
3071 jack_indev_deps="jack"
3072 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3073 kmsgrab_indev_deps="libdrm"
3074 lavfi_indev_deps="avfilter"
3075 libcdio_indev_deps="libcdio"
3076 libdc1394_indev_deps="libdc1394"
3077 libv4l2_indev_deps="libv4l2"
3078 openal_indev_deps="openal"
3079 opengl_outdev_deps="opengl"
3080 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3081 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3082 pulse_indev_deps="libpulse"
3083 pulse_outdev_deps="libpulse"
3084 sdl2_outdev_deps="sdl2"
3085 sndio_indev_deps="sndio"
3086 sndio_outdev_deps="sndio"
3087 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3088 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3089 vfwcap_indev_deps="vfw32 vfwcap_defines"
3090 xcbgrab_indev_deps="libxcb"
3091 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3092 xv_outdev_extralibs="-lXv -lX11 -lXext"
3093
3094 # protocols
3095 async_protocol_deps="threads"
3096 bluray_protocol_deps="libbluray"
3097 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3098 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3099 ffrtmpcrypt_protocol_select="tcp_protocol"
3100 ffrtmphttp_protocol_deps="!librtmp_protocol"
3101 ffrtmphttp_protocol_select="http_protocol"
3102 ftp_protocol_select="tcp_protocol"
3103 gopher_protocol_select="network"
3104 http_protocol_select="tcp_protocol"
3105 httpproxy_protocol_select="tcp_protocol"
3106 https_protocol_select="tls_protocol"
3107 icecast_protocol_select="http_protocol"
3108 librtmp_protocol_deps="librtmp"
3109 librtmpe_protocol_deps="librtmp"
3110 librtmps_protocol_deps="librtmp"
3111 librtmpt_protocol_deps="librtmp"
3112 librtmpte_protocol_deps="librtmp"
3113 libsmbclient_protocol_deps="libsmbclient gplv3"
3114 libssh_protocol_deps="libssh"
3115 mmsh_protocol_select="http_protocol"
3116 mmst_protocol_select="network"
3117 rtmp_protocol_deps="!librtmp_protocol"
3118 rtmp_protocol_select="tcp_protocol"
3119 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3120 rtmps_protocol_deps="!librtmp_protocol"
3121 rtmps_protocol_select="tls_protocol"
3122 rtmpt_protocol_select="ffrtmphttp_protocol"
3123 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3124 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3125 rtp_protocol_select="udp_protocol"
3126 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3127 sctp_protocol_select="network"
3128 srtp_protocol_select="rtp_protocol srtp"
3129 tcp_protocol_select="network"
3130 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3131 tls_gnutls_protocol_select="tcp_protocol"
3132 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3133 tls_openssl_protocol_select="tcp_protocol"
3134 tls_schannel_protocol_deps="schannel"
3135 tls_schannel_protocol_select="tcp_protocol"
3136 tls_securetransport_protocol_deps="securetransport"
3137 tls_securetransport_protocol_select="tcp_protocol"
3138 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3139 udp_protocol_select="network"
3140 udplite_protocol_select="network"
3141 unix_protocol_deps="sys_un_h"
3142 unix_protocol_select="network"
3143
3144 # filters
3145 afftfilt_filter_deps="avcodec"
3146 afftfilt_filter_select="fft"
3147 afir_filter_deps="avcodec"
3148 afir_filter_select="fft"
3149 amovie_filter_deps="avcodec avformat"
3150 aresample_filter_deps="swresample"
3151 ass_filter_deps="libass"
3152 atempo_filter_deps="avcodec"
3153 atempo_filter_select="rdft"
3154 azmq_filter_deps="libzmq"
3155 blackframe_filter_deps="gpl"
3156 boxblur_filter_deps="gpl"
3157 bs2b_filter_deps="libbs2b"
3158 colormatrix_filter_deps="gpl"
3159 coreimage_filter_deps="coreimage appkit"
3160 coreimage_filter_extralibs="-framework OpenGL"
3161 coreimagesrc_filter_deps="coreimage appkit"
3162 coreimagesrc_filter_extralibs="-framework OpenGL"
3163 cover_rect_filter_deps="avcodec avformat gpl"
3164 cropdetect_filter_deps="gpl"
3165 deinterlace_qsv_filter_deps="libmfx"
3166 deinterlace_vaapi_filter_deps="vaapi"
3167 delogo_filter_deps="gpl"
3168 deshake_filter_select="pixelutils"
3169 drawtext_filter_deps="libfreetype"
3170 elbg_filter_deps="avcodec"
3171 eq_filter_deps="gpl"
3172 fftfilt_filter_deps="avcodec"
3173 fftfilt_filter_select="rdft"
3174 find_rect_filter_deps="avcodec avformat gpl"
3175 firequalizer_filter_deps="avcodec"
3176 firequalizer_filter_select="rdft"
3177 flite_filter_deps="libflite"
3178 framerate_filter_select="pixelutils"
3179 frei0r_filter_deps="frei0r dlopen"
3180 frei0r_src_filter_deps="frei0r dlopen"
3181 fspp_filter_deps="gpl"
3182 geq_filter_deps="gpl"
3183 histeq_filter_deps="gpl"
3184 hqdn3d_filter_deps="gpl"
3185 interlace_filter_deps="gpl"
3186 kerndeint_filter_deps="gpl"
3187 ladspa_filter_deps="ladspa dlopen"
3188 mcdeint_filter_deps="avcodec gpl"
3189 movie_filter_deps="avcodec avformat"
3190 mpdecimate_filter_deps="gpl"
3191 mpdecimate_filter_select="pixelutils"
3192 mptestsrc_filter_deps="gpl"
3193 negate_filter_deps="lut_filter"
3194 nnedi_filter_deps="gpl"
3195 ocr_filter_deps="libtesseract"
3196 ocv_filter_deps="libopencv"
3197 owdenoise_filter_deps="gpl"
3198 pan_filter_deps="swresample"
3199 perspective_filter_deps="gpl"
3200 phase_filter_deps="gpl"
3201 pp7_filter_deps="gpl"
3202 pp_filter_deps="gpl postproc"
3203 pullup_filter_deps="gpl"
3204 removelogo_filter_deps="avcodec avformat swscale"
3205 repeatfields_filter_deps="gpl"
3206 resample_filter_deps="avresample"
3207 rubberband_filter_deps="librubberband"
3208 sab_filter_deps="gpl swscale"
3209 scale2ref_filter_deps="swscale"
3210 scale_filter_deps="swscale"
3211 scale_qsv_filter_deps="libmfx"
3212 select_filter_select="pixelutils"
3213 showcqt_filter_deps="avcodec avformat swscale"
3214 showcqt_filter_select="fft"
3215 showfreqs_filter_deps="avcodec"
3216 showfreqs_filter_select="fft"
3217 showspectrum_filter_deps="avcodec"
3218 showspectrum_filter_select="fft"
3219 showspectrumpic_filter_deps="avcodec"
3220 showspectrumpic_filter_select="fft"
3221 signature_filter_deps="gpl avcodec avformat"
3222 smartblur_filter_deps="gpl swscale"
3223 sofalizer_filter_deps="libmysofa avcodec"
3224 sofalizer_filter_select="fft"
3225 spectrumsynth_filter_deps="avcodec"
3226 spectrumsynth_filter_select="fft"
3227 spp_filter_deps="gpl avcodec"
3228 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3229 stereo3d_filter_deps="gpl"
3230 subtitles_filter_deps="avformat avcodec libass"
3231 super2xsai_filter_deps="gpl"
3232 pixfmts_super2xsai_test_deps="super2xsai_filter"
3233 tinterlace_filter_deps="gpl"
3234 tinterlace_merge_test_deps="tinterlace_filter"
3235 tinterlace_pad_test_deps="tinterlace_filter"
3236 tonemap_filter_deps="const_nan"
3237 uspp_filter_deps="gpl avcodec"
3238 vaguedenoiser_filter_deps="gpl"
3239 vidstabdetect_filter_deps="libvidstab"
3240 vidstabtransform_filter_deps="libvidstab"
3241 libvmaf_filter_deps="libvmaf"
3242 zmq_filter_deps="libzmq"
3243 zoompan_filter_deps="swscale"
3244 zscale_filter_deps="libzimg const_nan"
3245 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3246
3247 # examples
3248 avio_dir_cmd_deps="avformat avutil"
3249 avio_reading_deps="avformat avcodec avutil"
3250 decode_audio_example_deps="avcodec avutil"
3251 decode_video_example_deps="avcodec avutil"
3252 demuxing_decoding_example_deps="avcodec avformat avutil"
3253 encode_audio_example_deps="avcodec avutil"
3254 encode_video_example_deps="avcodec avutil"
3255 extract_mvs_example_deps="avcodec avformat avutil"
3256 filter_audio_example_deps="avfilter avutil"
3257 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3258 filtering_video_example_deps="avfilter avcodec avformat avutil"
3259 http_multiclient_example_deps="avformat avutil fork"
3260 hw_decode_example_deps="avcodec avformat avutil"
3261 metadata_example_deps="avformat avutil"
3262 muxing_example_deps="avcodec avformat avutil swscale"
3263 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3264 remuxing_example_deps="avcodec avformat avutil"
3265 resampling_audio_example_deps="avutil swresample"
3266 scaling_video_example_deps="avutil swscale"
3267 transcode_aac_example_deps="avcodec avformat swresample"
3268 transcoding_example_deps="avfilter avcodec avformat avutil"
3269
3270 # libraries, in linking order
3271 avcodec_deps="avutil"
3272 avcodec_select="null_bsf"
3273 avdevice_deps="avformat avcodec avutil"
3274 avfilter_deps="avutil"
3275 avformat_deps="avcodec avutil"
3276 avformat_suggest="network"
3277 avresample_deps="avutil"
3278 postproc_deps="avutil gpl"
3279 swresample_deps="avutil"
3280 swscale_deps="avutil"
3281
3282 # programs
3283 ffmpeg_deps="avcodec avfilter avformat swresample"
3284 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3285                null_filter
3286                trim_filter"
3287 ffplay_deps="avcodec avformat swscale swresample sdl2"
3288 ffplay_extralibs='$sdl2_extralibs'
3289 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3290 ffprobe_deps="avcodec avformat"
3291 ffserver_deps="avformat fork sarestart"
3292 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3293
3294 # documentation
3295 podpages_deps="perl"
3296 manpages_deps="perl pod2man"
3297 htmlpages_deps="perl"
3298 htmlpages_deps_any="makeinfo_html texi2html"
3299 txtpages_deps="perl makeinfo"
3300 doc_deps_any="manpages htmlpages podpages txtpages"
3301
3302 # default parameters
3303
3304 logfile="ffbuild/config.log"
3305
3306 # installation paths
3307 prefix_default="/usr/local"
3308 bindir_default='${prefix}/bin'
3309 datadir_default='${prefix}/share/ffmpeg'
3310 docdir_default='${prefix}/share/doc/ffmpeg'
3311 incdir_default='${prefix}/include'
3312 libdir_default='${prefix}/lib'
3313 mandir_default='${prefix}/share/man'
3314
3315 # toolchain
3316 ar_default="ar"
3317 cc_default="gcc"
3318 cxx_default="g++"
3319 host_cc_default="gcc"
3320 doxygen_default="doxygen"
3321 install="install"
3322 ln_s_default="ln -s -f"
3323 nm_default="nm -g"
3324 pkg_config_default=pkg-config
3325 ranlib_default="ranlib"
3326 strip_default="strip"
3327 version_script='--version-script'
3328 x86asmexe_default="nasm"
3329 windres_default="windres"
3330 nvcc_default="nvcc"
3331 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3332
3333 # OS
3334 target_os_default=$(tolower $(uname -s))
3335 host_os=$target_os_default
3336
3337 # machine
3338 if test "$target_os_default" = aix; then
3339     arch_default=$(uname -p)
3340     strip_default="strip -X32_64"
3341 else
3342     arch_default=$(uname -m)
3343 fi
3344 cpu="generic"
3345 intrinsics="none"
3346
3347 # configurable options
3348 enable $PROGRAM_LIST
3349 enable $DOCUMENT_LIST
3350 enable $EXAMPLE_LIST
3351 enable $(filter_out avresample $LIBRARY_LIST)
3352 enable stripping
3353
3354 enable asm
3355 enable debug
3356 enable doc
3357 enable faan faandct faanidct
3358 enable optimizations
3359 enable runtime_cpudetect
3360 enable safe_bitstream_reader
3361 enable static
3362 enable swscale_alpha
3363 enable valgrind_backtrace
3364
3365 sws_max_filter_size_default=256
3366 set_default sws_max_filter_size
3367
3368 # build settings
3369 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3370 LIBPREF="lib"
3371 LIBSUF=".a"
3372 FULLNAME='$(NAME)$(BUILDSUF)'
3373 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3374 SLIBPREF="lib"
3375 SLIBSUF=".so"
3376 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3377 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3378 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3379 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3380 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3381 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3382 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3383
3384 asflags_filter=echo
3385 cflags_filter=echo
3386 ldflags_filter=echo
3387
3388 AS_C='-c'
3389 AS_O='-o $@'
3390 CC_C='-c'
3391 CC_E='-E -o $@'
3392 CC_O='-o $@'
3393 CXX_C='-c'
3394 CXX_O='-o $@'
3395 OBJCC_C='-c'
3396 OBJCC_E='-E -o $@'
3397 OBJCC_O='-o $@'
3398 X86ASM_O='-o $@'
3399 LD_O='-o $@'
3400 LD_LIB='-l%'
3401 LD_PATH='-L'
3402 HOSTCC_C='-c'
3403 HOSTCC_E='-E -o $@'
3404 HOSTCC_O='-o $@'
3405 HOSTLD_O='-o $@'
3406 NVCC_C='-c'
3407 NVCC_O='-o $@'
3408
3409 host_extralibs='-lm'
3410 host_cflags_filter=echo
3411 host_ldflags_filter=echo
3412
3413 target_path='$(CURDIR)'
3414
3415 # since the object filename is not given with the -MM flag, the compiler
3416 # is only able to print the basename, and we must add the path ourselves
3417 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3418 DEPFLAGS='-MM'
3419
3420 mkdir -p ffbuild
3421
3422 # find source path
3423 if test -f configure; then
3424     source_path=.
3425 else
3426     source_path=$(cd $(dirname "$0"); pwd)
3427     case "$source_path" in
3428         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3429     esac
3430     test -e "$source_path/config.h" &&
3431         die "Out of tree builds are impossible with config.h in source dir."
3432 fi
3433
3434 for v in "$@"; do
3435     r=${v#*=}
3436     l=${v%"$r"}
3437     r=$(sh_quote "$r")
3438     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3439 done
3440
3441 find_things(){
3442     thing=$1
3443     pattern=$2
3444     file=$source_path/$3
3445     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3446 }
3447
3448 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3449 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3450 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3451 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3452 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3453 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3454 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3455 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3456 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3457
3458 find_things_extern(){
3459     thing=$1
3460     pattern=$2
3461     file=$source_path/$3
3462     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3463 }
3464
3465 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3466 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3467
3468 ALL_COMPONENTS="
3469     $BSF_LIST
3470     $DECODER_LIST
3471     $DEMUXER_LIST
3472     $ENCODER_LIST
3473     $FILTER_LIST
3474     $HWACCEL_LIST
3475     $INDEV_LIST
3476     $MUXER_LIST
3477     $OUTDEV_LIST
3478     $PARSER_LIST
3479     $PROTOCOL_LIST
3480 "
3481
3482 for n in $COMPONENT_LIST; do
3483     v=$(toupper ${n%s})_LIST
3484     eval enable \$$v
3485     eval ${n}_if_any="\$$v"
3486 done
3487
3488 enable $ARCH_EXT_LIST
3489
3490 die_unknown(){
3491     echo "Unknown option \"$1\"."
3492     echo "See $0 --help for available options."
3493     exit 1
3494 }
3495
3496 print_in_columns() {
3497     cols=$(expr $ncols / 24)
3498     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3499 }
3500
3501 show_list() {
3502     suffix=_$1
3503     shift
3504     echo $* | sed s/$suffix//g | print_in_columns
3505     exit 0
3506 }
3507
3508 rand_list(){
3509     IFS=', '
3510     set -- $*
3511     unset IFS
3512     for thing; do
3513         comp=${thing%:*}
3514         prob=${thing#$comp}
3515         prob=${prob#:}
3516         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3517         echo "prob ${prob:-0.5}"
3518         printf '%s\n' $comp
3519     done
3520 }
3521
3522 do_random(){
3523     action=$1
3524     shift
3525     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3526     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3527 }
3528
3529 for opt do
3530     optval="${opt#*=}"
3531     case "$opt" in
3532         --extra-ldflags=*)
3533             add_ldflags $optval
3534         ;;
3535         --extra-ldexeflags=*)
3536             add_ldexeflags $optval
3537         ;;
3538         --extra-ldlibflags=*)
3539             add_ldlibflags $optval
3540         ;;
3541         --extra-libs=*)
3542             add_extralibs $optval
3543         ;;
3544         --disable-devices)
3545             disable $INDEV_LIST $OUTDEV_LIST
3546         ;;
3547         --enable-debug=*)
3548             debuglevel="$optval"
3549         ;;
3550         --disable-programs)
3551             disable $PROGRAM_LIST
3552         ;;
3553         --disable-everything)
3554             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3555         ;;
3556         --disable-all)
3557             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3558             disable $LIBRARY_LIST $PROGRAM_LIST doc
3559             enable avutil
3560         ;;
3561         --enable-random|--disable-random)
3562             action=${opt%%-random}
3563             do_random ${action#--} $COMPONENT_LIST
3564         ;;
3565         --enable-random=*|--disable-random=*)
3566             action=${opt%%-random=*}
3567             do_random ${action#--} $optval
3568         ;;
3569         --enable-sdl)
3570             enable sdl2
3571         ;;
3572         --enable-*=*|--disable-*=*)
3573             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3574             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3575             eval list=\$$(toupper $thing)_LIST
3576             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3577             list=$(filter "$name" $list)
3578             [ "$list" = "" ] && warn "Option $opt did not match anything"
3579             $action $list
3580         ;;
3581         --enable-yasm|--disable-yasm)
3582             warn "The ${opt} option is only provided for compatibility and will be\n"\
3583                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3584             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3585         ;;
3586         --yasmexe=*)
3587             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3588                  "removed in the future. Use --x86asmexe instead."
3589             x86asmexe="$optval"
3590         ;;
3591         --enable-?*|--disable-?*)
3592             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3593             if is_in $option $COMPONENT_LIST; then
3594                 test $action = disable && action=unset
3595                 eval $action \$$(toupper ${option%s})_LIST
3596             elif is_in $option $CMDLINE_SELECT; then
3597                 $action $option
3598             else
3599                 die_unknown $opt
3600             fi
3601         ;;
3602         --list-*)
3603             NAME="${opt#--list-}"
3604             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3605             NAME=${NAME%s}
3606             eval show_list $NAME \$$(toupper $NAME)_LIST
3607         ;;
3608         --help|-h) show_help
3609         ;;
3610         --quiet|-q) quiet=yes
3611         ;;
3612         --fatal-warnings) enable fatal_warnings
3613         ;;
3614         --libfuzzer=*)
3615             libfuzzer_path="$optval"
3616         ;;
3617         *)
3618             optname="${opt%%=*}"
3619             optname="${optname#--}"
3620             optname=$(echo "$optname" | sed 's/-/_/g')
3621             if is_in $optname $CMDLINE_SET; then
3622                 eval $optname='$optval'
3623             elif is_in $optname $CMDLINE_APPEND; then
3624                 append $optname "$optval"
3625             else
3626                 die_unknown $opt
3627             fi
3628         ;;
3629     esac
3630 done
3631
3632 for e in $env; do
3633     eval "export $e"
3634 done
3635
3636 if disabled autodetect; then
3637
3638     # Unless iconv is explicitely disabled by the user, we still want to probe
3639     # for the iconv from the libc.
3640     disabled iconv || enable libc_iconv
3641
3642     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3643     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3644 fi
3645 # Mark specifically enabled, but normally autodetected libraries as requested.
3646 for lib in $AUTODETECT_LIBS; do
3647     enabled $lib && request $lib
3648 done
3649 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3650 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3651 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3652
3653 disabled logging && logfile=/dev/null
3654
3655 die_license_disabled() {
3656     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3657 }
3658
3659 die_license_disabled_gpl() {
3660     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3661 }
3662
3663 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3664 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3665
3666 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3667 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3668
3669 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3670
3671 # Disable all the library-specific components if the library itself
3672 # is disabled, see AVCODEC_LIST and following _LIST variables.
3673
3674 disable_components(){
3675     disabled ${1} && disable $(
3676         eval components="\$$(toupper ${1})_COMPONENTS"
3677         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3678     )
3679 }
3680
3681 map 'disable_components $v' $LIBRARY_LIST
3682
3683 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3684 set >> $logfile
3685
3686 test -n "$valgrind" && toolchain="valgrind-memcheck"
3687
3688 enabled ossfuzz && {
3689     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3690     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3691 }
3692
3693 case "$toolchain" in
3694     *-asan)
3695         cc_default="${toolchain%-asan}"
3696         add_cflags  -fsanitize=address
3697         add_ldflags -fsanitize=address
3698     ;;
3699     *-msan)
3700         cc_default="${toolchain%-msan}"
3701         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3702         add_ldflags -fsanitize=memory
3703     ;;
3704     *-tsan)
3705         cc_default="${toolchain%-tsan}"
3706         add_cflags  -fsanitize=thread -fPIE
3707         add_ldflags -fsanitize=thread -pie
3708         case "$toolchain" in
3709             gcc-tsan)
3710                 add_cflags  -fPIC
3711                 add_ldflags -fPIC
3712                 ;;
3713         esac
3714     ;;
3715     *-usan)
3716         cc_default="${toolchain%-usan}"
3717         add_cflags  -fsanitize=undefined
3718         add_ldflags -fsanitize=undefined
3719     ;;
3720     valgrind-*)
3721         target_exec_default="valgrind"
3722         case "$toolchain" in
3723             valgrind-massif)
3724                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3725                 ;;
3726             valgrind-memcheck)
3727                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3728                 ;;
3729         esac
3730     ;;
3731     msvc)
3732         # Check whether the current MSVC version needs the C99 converter.
3733         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3734         # support enough of C99 to build ffmpeg. Default to the new
3735         # behaviour if the regexp was unable to match anything, since this
3736         # successfully parses the version number of existing supported
3737         # versions that require the converter (MSVC 2010 and 2012).
3738         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3739         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3740             cc_default="cl"
3741             cxx_default="cl"
3742         else
3743             cc_default="c99wrap cl"
3744             cxx_default="c99wrap cl"
3745         fi
3746         ld_default="$source_path/compat/windows/mslink"
3747         nm_default="dumpbin -symbols"
3748         ar_default="lib"
3749         case "$arch" in
3750         arm*)
3751             as_default="armasm"
3752             ;;
3753         esac
3754         target_os_default="win32"
3755         # Use a relative path for TMPDIR. This makes sure all the
3756         # ffconf temp files are written with a relative path, avoiding
3757         # issues with msys/win32 path conversion for MSVC parameters
3758         # such as -Fo<file> or -out:<file>.
3759         TMPDIR=.
3760     ;;
3761     icl)
3762         cc_default="icl"
3763         ld_default="xilink"
3764         nm_default="dumpbin -symbols"
3765         ar_default="xilib"
3766         target_os_default="win32"
3767         TMPDIR=.
3768     ;;
3769     gcov)
3770         add_cflags  -fprofile-arcs -ftest-coverage
3771         add_ldflags -fprofile-arcs -ftest-coverage
3772     ;;
3773     llvm-cov)
3774         add_cflags -fprofile-arcs -ftest-coverage
3775         add_ldflags --coverage
3776     ;;
3777     hardened)
3778         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3779         add_cflags   -fno-strict-overflow -fstack-protector-all
3780         add_ldflags  -Wl,-z,relro -Wl,-z,now
3781         add_cflags   -fPIE
3782         add_ldexeflags -fPIE -pie
3783     ;;
3784     ?*)
3785         die "Unknown toolchain $toolchain"
3786     ;;
3787 esac
3788
3789 test -n "$cross_prefix" && enable cross_compile
3790
3791 if enabled cross_compile; then
3792     test -n "$arch" && test -n "$target_os" ||
3793         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3794 fi
3795
3796 ar_default="${cross_prefix}${ar_default}"
3797 cc_default="${cross_prefix}${cc_default}"
3798 cxx_default="${cross_prefix}${cxx_default}"
3799 nm_default="${cross_prefix}${nm_default}"
3800 pkg_config_default="${cross_prefix}${pkg_config_default}"
3801 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3802     ranlib_default="${cross_prefix}${ranlib_default} -D"
3803 else
3804     ranlib_default="${cross_prefix}${ranlib_default}"
3805 fi
3806 strip_default="${cross_prefix}${strip_default}"
3807 windres_default="${cross_prefix}${windres_default}"
3808
3809 sysinclude_default="${sysroot}/usr/include"
3810
3811 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3812     target_exec target_os x86asmexe nvcc
3813 enabled cross_compile || host_cc_default=$cc
3814 set_default host_cc
3815
3816 pkg_config_fail_message=""
3817 if ! $pkg_config --version >/dev/null 2>&1; then
3818     warn "$pkg_config not found, library detection may fail."
3819     pkg_config=false
3820 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3821     pkg_config_fail_message="
3822 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3823 fi
3824
3825 if test $doxygen != $doxygen_default && \
3826   ! $doxygen --version >/dev/null 2>&1; then
3827     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3828 fi
3829
3830 exesuf() {
3831     case $1 in
3832         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3833     esac
3834 }
3835
3836 EXESUF=$(exesuf $target_os)
3837 HOSTEXESUF=$(exesuf $host_os)
3838
3839 # set temporary file name
3840 : ${TMPDIR:=$TEMPDIR}
3841 : ${TMPDIR:=$TMP}
3842 : ${TMPDIR:=/tmp}
3843
3844 if [ -n "$tempprefix" ] ; then
3845     mktemp(){
3846         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3847         echo "$tmpname"
3848         mkdir "$tmpname"
3849     }
3850 elif ! check_cmd mktemp -u XXXXXX; then
3851     # simple replacement for missing mktemp
3852     # NOT SAFE FOR GENERAL USE
3853     mktemp(){
3854         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3855         echo "$tmpname"
3856         mkdir "$tmpname"
3857     }
3858 fi
3859
3860 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3861     die "Unable to create temporary directory in $TMPDIR."
3862
3863 tmpfile(){
3864     tmp="${FFTMPDIR}/test"$2
3865     (set -C; exec > $tmp) 2> /dev/null ||
3866         die "Unable to create temporary file in $FFTMPDIR."
3867     eval $1=$tmp
3868 }
3869
3870 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3871 trap 'exit 2' INT
3872
3873 tmpfile TMPASM .asm
3874 tmpfile TMPC   .c
3875 tmpfile TMPCPP .cpp
3876 tmpfile TMPE   $EXESUF
3877 tmpfile TMPH   .h
3878 tmpfile TMPM   .m
3879 tmpfile TMPO   .o
3880 tmpfile TMPS   .S
3881 tmpfile TMPSH  .sh
3882 tmpfile TMPV   .ver
3883
3884 unset -f mktemp
3885
3886 chmod +x $TMPE
3887
3888 # make sure we can execute files in $TMPDIR
3889 cat > $TMPSH 2>> $logfile <<EOF
3890 #! /bin/sh
3891 EOF
3892 chmod +x $TMPSH >> $logfile 2>&1
3893 if ! $TMPSH >> $logfile 2>&1; then
3894     cat <<EOF
3895 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3896 variable to another directory and make sure that it is not mounted noexec.
3897 EOF
3898     die "Sanity test failed."
3899 fi
3900
3901 armasm_flags(){
3902     for flag; do
3903         case $flag in
3904             # Filter out MSVC cl.exe options from cflags that shouldn't
3905             # be passed to gas-preprocessor
3906             -M[TD]*)                                            ;;
3907             *)                  echo $flag                      ;;
3908         esac
3909    done
3910 }
3911
3912 ccc_flags(){
3913     for flag; do
3914         case $flag in
3915             -std=c99)           echo -c99                       ;;
3916             -mcpu=*)            echo -arch ${flag#*=}           ;;
3917             -mieee)             echo -ieee                      ;;
3918             -O*|-fast)          echo $flag                      ;;
3919             -fno-math-errno)    echo -assume nomath_errno       ;;
3920             -g)                 echo -g3                        ;;
3921             -Wall)              echo -msg_enable level2         ;;
3922             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3923             -Wl,*)              echo $flag                      ;;
3924             -f*|-W*)                                            ;;
3925             *)                  echo $flag                      ;;
3926         esac
3927    done
3928 }
3929
3930 cparser_flags(){
3931     for flag; do
3932         case $flag in
3933             -Wno-switch)             echo -Wno-switch-enum ;;
3934             -Wno-format-zero-length) ;;
3935             -Wdisabled-optimization) ;;
3936             -Wno-pointer-sign)       echo -Wno-other ;;
3937             *)                       echo $flag ;;
3938         esac
3939     done
3940 }
3941
3942 msvc_common_flags(){
3943     for flag; do
3944         case $flag in
3945             # In addition to specifying certain flags under the compiler
3946             # specific filters, they must be specified here as well or else the
3947             # generic catch all at the bottom will print the original flag.
3948             -Wall)                ;;
3949             -Wextra)              ;;
3950             -std=c99)             ;;
3951             # Common flags
3952             -fomit-frame-pointer) ;;
3953             -g)                   echo -Z7 ;;
3954             -fno-math-errno)      ;;
3955             -fno-common)          ;;
3956             -fno-signed-zeros)    ;;
3957             -fPIC)                ;;
3958             -mthumb)              ;;
3959             -march=*)             ;;
3960             -lz)                  echo zlib.lib ;;
3961             -lx264)               echo libx264.lib ;;
3962             -lstdc++)             ;;
3963             -l*)                  echo ${flag#-l}.lib ;;
3964             -LARGEADDRESSAWARE)   echo $flag ;;
3965             -L*)                  echo -libpath:${flag#-L} ;;
3966             *)                    echo $flag ;;
3967         esac
3968     done
3969 }
3970
3971 msvc_flags(){
3972     msvc_common_flags "$@"
3973     for flag; do
3974         case $flag in
3975             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3976                                        -wd4554 ;;
3977             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3978                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3979                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3980                                        -wd4307 \
3981                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3982         esac
3983     done
3984 }
3985
3986 icl_flags(){
3987     msvc_common_flags "$@"
3988     for flag; do
3989         case $flag in
3990             # Despite what Intel's documentation says -Wall, which is supported
3991             # on Windows, does enable remarks so disable them here.
3992             -Wall)                echo $flag -Qdiag-disable:remark ;;
3993             -std=c99)             echo -Qstd=c99 ;;
3994             -flto)                echo -ipo ;;
3995         esac
3996     done
3997 }
3998
3999 icc_flags(){
4000     for flag; do
4001         case $flag in
4002             -flto)                echo -ipo ;;
4003             *)                    echo $flag ;;
4004         esac
4005     done
4006 }
4007
4008 pgi_flags(){
4009     for flag; do
4010         case $flag in
4011             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4012             -fomit-frame-pointer) echo -Mnoframe ;;
4013             -g)                   echo -gopt ;;
4014             *)                    echo $flag ;;
4015         esac
4016     done
4017 }
4018
4019 suncc_flags(){
4020     for flag; do
4021         case $flag in
4022             -march=*|-mcpu=*)
4023                 case "${flag#*=}" in
4024                     native)                   echo -xtarget=native       ;;
4025                     v9|niagara)               echo -xarch=sparc          ;;
4026                     ultrasparc)               echo -xarch=sparcvis       ;;
4027                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4028                     i586|pentium)             echo -xchip=pentium        ;;
4029                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4030                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4031                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4032                     pentium4*)          echo -xtarget=pentium4           ;;
4033                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4034                     *-sse3)             echo -xarch=sse3                 ;;
4035                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4036                     bonnell)                   echo -xarch=ssse3         ;;
4037                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4038                     westmere)                  echo -xtarget=westmere    ;;
4039                     silvermont)                echo -xarch=sse4_2        ;;
4040                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4041                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4042                                                echo -xarch=avx           ;;
4043                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4044                     btver1)                    echo -xarch=amdsse4a      ;;
4045                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4046                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4047                     k8|opteron|athlon64|athlon-fx)
4048                                                echo -xarch=sse2a         ;;
4049                     athlon*)                   echo -xarch=pentium_proa  ;;
4050                 esac
4051                 ;;
4052             -std=c99)             echo -xc99              ;;
4053             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4054             -fPIC)                echo -KPIC -xcode=pic32 ;;
4055             -W*,*)                echo $flag              ;;
4056             -f*-*|-W*|-mimpure-text)                      ;;
4057             -shared)              echo -G                 ;;
4058             *)                    echo $flag              ;;
4059         esac
4060     done
4061 }
4062
4063 tms470_flags(){
4064     for flag; do
4065         case $flag in
4066             -march=*|-mcpu=*)
4067                 case "${flag#*=}" in
4068                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4069                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4070                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4071                     armv6*|arm11*)          echo -mv=6   ;;
4072                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4073                                             echo -mv=5e  ;;
4074                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4075                 esac
4076                 ;;
4077             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4078             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4079             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4080             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4081             -msoft-float)   echo --float_support=vfplib       ;;
4082             -O[0-3]|-mf=*)  echo $flag                        ;;
4083             -g)             echo -g -mn                       ;;
4084             -pds=*)         echo $flag                        ;;
4085             -D*|-I*)        echo $flag                        ;;
4086             --gcc|--abi=*)  echo $flag                        ;;
4087             -me)            echo $flag                        ;;
4088         esac
4089     done
4090 }
4091
4092 probe_cc(){
4093     pfx=$1
4094     _cc=$2
4095     first=$3
4096
4097     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4098     unset _ld_o _ldflags _ld_lib _ld_path
4099     unset _depflags _DEPCMD _DEPFLAGS
4100     _flags_filter=echo
4101
4102     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4103         true # no-op to avoid reading stdin in following checks
4104     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4105         _type=llvm_gcc
4106         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4107         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4108         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4109         _cflags_speed='-O3'
4110         _cflags_size='-Os'
4111     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4112         _type=gcc
4113         gcc_version=$($_cc --version | head -n1)
4114         gcc_basever=$($_cc -dumpversion)
4115         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4116         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4117         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4118         case $gcc_basever in
4119             2) ;;
4120             2.*) ;;
4121             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4122         esac
4123         if [ "$first" = true ]; then
4124             case $gcc_basever in
4125                 4.2*)
4126                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4127             esac
4128         fi
4129         _cflags_speed='-O3'
4130         _cflags_size='-Os'
4131     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4132         _type=icc
4133         _ident=$($_cc --version | head -n1)
4134         _depflags='-MMD'
4135         _cflags_speed='-O3'
4136         _cflags_size='-Os'
4137         _cflags_noopt='-O1'
4138         _flags_filter=icc_flags
4139     elif $_cc -v 2>&1 | grep -q xlc; then
4140         _type=xlc
4141         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4142         _cflags_speed='-O5'
4143         _cflags_size='-O5 -qcompact'
4144     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4145         _type=ccc
4146         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4147         _DEPFLAGS='-M'
4148         _cflags_speed='-fast'
4149         _cflags_size='-O1'
4150         _flags_filter=ccc_flags
4151     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4152         test -d "$sysroot" || die "No valid sysroot specified."
4153         _type=armcc
4154         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4155         armcc_conf="$PWD/armcc.conf"
4156         $_cc --arm_linux_configure                 \
4157              --arm_linux_config_file="$armcc_conf" \
4158              --configure_sysroot="$sysroot"        \
4159              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4160              die "Error creating armcc configuration file."
4161         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4162         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4163         as_default="${cross_prefix}gcc"
4164         _depflags='-MMD'
4165         _cflags_speed='-O3'
4166         _cflags_size='-Os'
4167     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4168         _type=tms470
4169         _ident=$($_cc -version | head -n1 | tr -s ' ')
4170         _flags='--gcc --abi=eabi -me'
4171         _cc_e='-ppl -fe=$@'
4172         _cc_o='-fe=$@'
4173         _depflags='-ppa -ppd=$(@:.o=.d)'
4174         _cflags_speed='-O3 -mf=5'
4175         _cflags_size='-O3 -mf=2'
4176         _flags_filter=tms470_flags
4177     elif $_cc -v 2>&1 | grep -q clang; then
4178         _type=clang
4179         _ident=$($_cc --version 2>/dev/null | head -n1)
4180         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4181         _cflags_speed='-O3'
4182         _cflags_size='-Oz'
4183     elif $_cc -V 2>&1 | grep -q Sun; then
4184         _type=suncc
4185         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4186         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4187         _DEPFLAGS='-xM1 -xc99'
4188         _ldflags='-std=c99'
4189         _cflags_speed='-O5'
4190         _cflags_size='-O5 -xspace'
4191         _flags_filter=suncc_flags
4192     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4193         _type=pathscale
4194         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4195         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4196         _cflags_speed='-O2'
4197         _cflags_size='-Os'
4198         _flags_filter='filter_out -Wdisabled-optimization'
4199     elif $_cc -v 2>&1 | grep -q Open64; then
4200         _type=open64
4201         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4202         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4203         _cflags_speed='-O2'
4204         _cflags_size='-Os'
4205         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4206     elif $_cc -V 2>&1 | grep -q Portland; then
4207         _type=pgi
4208         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4209         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4210         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4211         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4212         _cflags_noopt="-O"
4213         _flags_filter=pgi_flags
4214     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4215         _type=armasm
4216         _ident=$($_cc | head -n1)
4217         # 4509: "This form of conditional instruction is deprecated"
4218         _flags="-nologo -ignore 4509"
4219         _flags_filter=armasm_flags
4220     elif $_cc 2>&1 | grep -q Intel; then
4221         _type=icl
4222         _ident=$($_cc 2>&1 | head -n1)
4223         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4224         # Not only is O3 broken on 13.x+ but it is slower on all previous
4225         # versions (tested) as well.
4226         _cflags_speed="-O2"
4227         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4228         if $_cc 2>&1 | grep -q Linker; then
4229             _ld_o='-out:$@'
4230         else
4231             _ld_o='-Fe$@'
4232         fi
4233         _cc_o='-Fo$@'
4234         _cc_e='-P'
4235         _flags_filter=icl_flags
4236         _ld_lib='lib%.a'
4237         _ld_path='-libpath:'
4238         # -Qdiag-error to make icl error when seeing certain unknown arguments
4239         _flags='-nologo -Qdiag-error:4044,10157'
4240         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4241         # with MSVC which enables it by default.
4242         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4243         disable stripping
4244     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4245         # lld can emulate multiple different linkers; in ms link.exe mode,
4246         # the -? parameter gives the help output which contains an identifyable
4247         # string, while it gives an error in other modes.
4248         _type=lld-link
4249         # The link.exe mode doesn't have a switch for getting the version,
4250         # but we can force it back to gnu mode and get the version from there.
4251         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4252         _ld_o='-out:$@'
4253         _flags_filter=msvc_flags
4254         _ld_lib='lib%.a'
4255         _ld_path='-libpath:'
4256     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4257         _type=msvc
4258         _ident=$($_cc 2>&1 | head -n1)
4259         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4260         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4261         _cflags_speed="-O2"
4262         _cflags_size="-O1"
4263         _cflags_noopt="-O1"
4264         if $_cc -nologo- 2>&1 | grep -q Linker; then
4265             _ld_o='-out:$@'
4266         else
4267             _ld_o='-Fe$@'
4268         fi
4269         _cc_o='-Fo$@'
4270         _cc_e='-P -Fi$@'
4271         _flags_filter=msvc_flags
4272         _ld_lib='lib%.a'
4273         _ld_path='-libpath:'
4274         _flags='-nologo'
4275         disable stripping
4276     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4277         _type=cparser
4278         _ident=$($_cc --version | head -n1)
4279         _depflags='-MMD'
4280         _cflags_speed='-O4'
4281         _cflags_size='-O2'
4282         _flags_filter=cparser_flags
4283     fi
4284
4285     eval ${pfx}_type=\$_type
4286     eval ${pfx}_ident=\$_ident
4287 }
4288
4289 set_ccvars(){
4290     eval ${1}_C=\${_cc_c-\${${1}_C}}
4291     eval ${1}_E=\${_cc_e-\${${1}_E}}
4292     eval ${1}_O=\${_cc_o-\${${1}_O}}
4293
4294     if [ -n "$_depflags" ]; then
4295         eval ${1}_DEPFLAGS=\$_depflags
4296     else
4297         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4298         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4299         eval DEP${1}FLAGS=\$_flags
4300     fi
4301 }
4302
4303 probe_cc cc "$cc" "true"
4304 cflags_filter=$_flags_filter
4305 cflags_speed=$_cflags_speed
4306 cflags_size=$_cflags_size
4307 cflags_noopt=$_cflags_noopt
4308 add_cflags $_flags $_cflags
4309 cc_ldflags=$_ldflags
4310 set_ccvars CC
4311 set_ccvars CXX
4312
4313 probe_cc hostcc "$host_cc"
4314 host_cflags_filter=$_flags_filter
4315 host_cflags_speed=$_cflags_speed
4316 add_host_cflags  $_flags $_cflags
4317 set_ccvars HOSTCC
4318
4319 test -n "$cc_type" && enable $cc_type ||
4320     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4321
4322 : ${as_default:=$cc}
4323 : ${objcc_default:=$cc}
4324 : ${dep_cc_default:=$cc}
4325 : ${ld_default:=$cc}
4326 : ${host_ld_default:=$host_cc}
4327 set_default ar as objcc dep_cc ld ln_s host_ld windres
4328
4329 probe_cc as "$as"
4330 asflags_filter=$_flags_filter
4331 add_asflags $_flags $_cflags
4332 set_ccvars AS
4333
4334 probe_cc objcc "$objcc"
4335 objcflags_filter=$_flags_filter
4336 add_objcflags $_flags $_cflags
4337 set_ccvars OBJC
4338
4339 probe_cc ld "$ld"
4340 ldflags_filter=$_flags_filter
4341 add_ldflags $_flags $_ldflags
4342 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4343 LD_O=${_ld_o-$LD_O}
4344 LD_LIB=${_ld_lib-$LD_LIB}
4345 LD_PATH=${_ld_path-$LD_PATH}
4346
4347 probe_cc hostld "$host_ld"
4348 host_ldflags_filter=$_flags_filter
4349 add_host_ldflags $_flags $_ldflags
4350 HOSTLD_O=${_ld_o-$HOSTLD_O}
4351
4352 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4353     probe_cc depcc "$dep_cc"
4354     CCDEP=${_DEPCMD:-$DEPCMD}
4355     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4356     DEPCCFLAGS=$_flags
4357 fi
4358
4359 if $ar 2>&1 | grep -q Microsoft; then
4360     arflags="-nologo"
4361     ar_o='-out:$@'
4362 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4363     arflags="rq"
4364     ar_o='$@'
4365 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4366     arflags='-Xany -r -c'
4367     ar_o='$@'
4368 elif $ar 2>&1 | grep -q "\[D\] "; then
4369     arflags="rcD"
4370     ar_o='$@'
4371 else
4372     arflags="rc"
4373     ar_o='$@'
4374 fi
4375
4376 add_cflags $extra_cflags
4377 add_cxxflags $extra_cxxflags
4378 add_objcflags $extra_objcflags
4379 add_asflags $extra_cflags
4380
4381 if test -n "$sysroot"; then
4382     case "$cc_type" in
4383         gcc|llvm_gcc|clang)
4384             add_cppflags --sysroot="$sysroot"
4385             add_ldflags --sysroot="$sysroot"
4386 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4387             add_cppflags -isysroot "$sysroot"
4388             add_ldflags -isysroot "$sysroot"
4389         ;;
4390         tms470)
4391             add_cppflags -I"$sysinclude"
4392             add_ldflags  --sysroot="$sysroot"
4393         ;;
4394     esac
4395 fi
4396
4397 if test "$cpu" = host; then
4398     enabled cross_compile &&
4399         die "--cpu=host makes no sense when cross-compiling."
4400
4401     case "$cc_type" in
4402         gcc|llvm_gcc)
4403             check_native(){
4404                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4405                 sed -n "/cc1.*$1=/{
4406                             s/.*$1=\\([^ ]*\\).*/\\1/
4407                             p
4408                             q
4409                         }" $TMPE
4410             }
4411             cpu=$(check_native -march || check_native -mcpu)
4412         ;;
4413         clang)
4414             check_native(){
4415                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4416                 sed -n "/cc1.*-target-cpu /{
4417                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4418                             p
4419                             q
4420                         }" $TMPE
4421             }
4422             cpu=$(check_native -march)
4423         ;;
4424     esac
4425
4426     test "${cpu:-host}" = host &&
4427         die "--cpu=host not supported with compiler $cc"
4428 fi
4429
4430 # Deal with common $arch aliases
4431 case "$arch" in
4432     aarch64|arm64)
4433         arch="aarch64"
4434     ;;
4435     arm*|iPad*|iPhone*)
4436         arch="arm"
4437     ;;
4438     mips*|IP*)
4439         case "$arch" in
4440         *el)
4441             add_cppflags -EL
4442             add_ldflags -EL
4443         ;;
4444         *eb)
4445             add_cppflags -EB
4446             add_ldflags -EB
4447         ;;
4448         esac
4449         arch="mips"
4450     ;;
4451     parisc*|hppa*)
4452         arch="parisc"
4453     ;;
4454     "Power Macintosh"|ppc*|powerpc*)
4455         arch="ppc"
4456     ;;
4457     s390|s390x)
4458         arch="s390"
4459     ;;
4460     sh4|sh)
4461         arch="sh4"
4462     ;;
4463     sun4*|sparc*)
4464         arch="sparc"
4465     ;;
4466     tilegx|tile-gx)
4467         arch="tilegx"
4468     ;;
4469     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4470         arch="x86"
4471     ;;
4472 esac
4473
4474 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4475 enable $arch
4476
4477 # Add processor-specific flags
4478 if enabled aarch64; then
4479
4480     case $cpu in
4481         armv*)
4482             cpuflags="-march=$cpu"
4483         ;;
4484         *)
4485             cpuflags="-mcpu=$cpu"
4486         ;;
4487     esac
4488
4489 elif enabled alpha; then
4490
4491     cpuflags="-mcpu=$cpu"
4492
4493 elif enabled arm; then
4494
4495     check_arm_arch() {
4496         check_cpp_condition stddef.h \
4497             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4498             $cpuflags
4499     }
4500
4501     probe_arm_arch() {
4502         if   check_arm_arch 4;        then echo armv4
4503         elif check_arm_arch 4T;       then echo armv4t
4504         elif check_arm_arch 5;        then echo armv5
4505         elif check_arm_arch 5E;       then echo armv5e
4506         elif check_arm_arch 5T;       then echo armv5t
4507         elif check_arm_arch 5TE;      then echo armv5te
4508         elif check_arm_arch 5TEJ;     then echo armv5te
4509         elif check_arm_arch 6;        then echo armv6
4510         elif check_arm_arch 6J;       then echo armv6j
4511         elif check_arm_arch 6K;       then echo armv6k
4512         elif check_arm_arch 6Z;       then echo armv6z
4513         elif check_arm_arch 6ZK;      then echo armv6zk
4514         elif check_arm_arch 6T2;      then echo armv6t2
4515         elif check_arm_arch 7;        then echo armv7
4516         elif check_arm_arch 7A  7_A;  then echo armv7-a
4517         elif check_arm_arch 7S;       then echo armv7-a
4518         elif check_arm_arch 7R  7_R;  then echo armv7-r
4519         elif check_arm_arch 7M  7_M;  then echo armv7-m
4520         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4521         elif check_arm_arch 8A  8_A;  then echo armv8-a
4522         fi
4523     }
4524
4525     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4526
4527     case $cpu in
4528         armv*)
4529             cpuflags="-march=$cpu"
4530             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4531         ;;
4532         *)
4533             cpuflags="-mcpu=$cpu"
4534             case $cpu in
4535                 cortex-a*)                               subarch=armv7a  ;;
4536                 cortex-r*)                               subarch=armv7r  ;;
4537                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4538                 arm11*)                                  subarch=armv6   ;;
4539                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4540                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4541                 *)                             subarch=$(probe_arm_arch) ;;
4542             esac
4543         ;;
4544     esac
4545
4546     case "$subarch" in
4547         armv5t*)    enable fast_clz                ;;
4548         armv[6-8]*)
4549             enable fast_clz
4550             disabled fast_unaligned || enable fast_unaligned
4551             ;;
4552     esac
4553
4554 elif enabled avr32; then
4555
4556     case $cpu in
4557         ap7[02]0[0-2])
4558             subarch="avr32_ap"
4559             cpuflags="-mpart=$cpu"
4560         ;;
4561         ap)
4562             subarch="avr32_ap"
4563             cpuflags="-march=$cpu"
4564         ;;
4565         uc3[ab]*)
4566             subarch="avr32_uc"
4567             cpuflags="-mcpu=$cpu"
4568         ;;
4569         uc)
4570             subarch="avr32_uc"
4571             cpuflags="-march=$cpu"
4572         ;;
4573     esac
4574
4575 elif enabled bfin; then
4576
4577     cpuflags="-mcpu=$cpu"
4578
4579 elif enabled mips; then
4580
4581     cpuflags="-march=$cpu"
4582
4583     if [ "$cpu" != "generic" ]; then
4584         disable mips32r2
4585         disable mips32r5
4586         disable mips64r2
4587         disable mips32r6
4588         disable mips64r6
4589         disable loongson2
4590         disable loongson3
4591
4592         case $cpu in
4593             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4594                 enable mips32r2
4595                 disable msa
4596             ;;
4597             p5600|i6400|p6600)
4598                 disable mipsdsp
4599                 disable mipsdspr2
4600             ;;
4601             loongson*)
4602                 enable loongson2
4603                 enable loongson3
4604                 enable local_aligned_8 local_aligned_16 local_aligned_32
4605                 enable simd_align_16
4606                 enable fast_64bit
4607                 enable fast_clz
4608                 enable fast_cmov
4609                 enable fast_unaligned
4610                 disable aligned_stack
4611                 disable mipsfpu
4612                 disable mipsdsp
4613                 disable mipsdspr2
4614                 case $cpu in
4615                     loongson3*)
4616                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4617                     ;;
4618                     loongson2e)
4619                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4620                     ;;
4621                     loongson2f)
4622                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4623                     ;;
4624                 esac
4625             ;;
4626             *)
4627                 # Unknown CPU. Disable everything.
4628                 warn "unknown CPU. Disabling all MIPS optimizations."
4629                 disable mipsfpu
4630                 disable mipsdsp
4631                 disable mipsdspr2
4632                 disable msa
4633                 disable mmi
4634             ;;
4635         esac
4636
4637         case $cpu in
4638             24kc)
4639                 disable mipsfpu
4640                 disable mipsdsp
4641                 disable mipsdspr2
4642             ;;
4643             24kf*)
4644                 disable mipsdsp
4645                 disable mipsdspr2
4646             ;;
4647             24kec|34kc|1004kc)
4648                 disable mipsfpu
4649                 disable mipsdspr2
4650             ;;
4651             24kef*|34kf*|1004kf*)
4652                 disable mipsdspr2
4653             ;;
4654             74kc)
4655                 disable mipsfpu
4656             ;;
4657             p5600)
4658                 enable mips32r5
4659                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4660             ;;
4661             i6400)
4662                 enable mips64r6
4663                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4664             ;;
4665             p6600)
4666                 enable mips64r6
4667                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4668             ;;
4669         esac
4670     else
4671         # We do not disable anything. Is up to the user to disable the unwanted features.
4672         warn 'generic cpu selected'
4673     fi
4674
4675 elif enabled ppc; then
4676
4677     disable ldbrx
4678
4679     case $(tolower $cpu) in
4680         601|ppc601|powerpc601)
4681             cpuflags="-mcpu=601"
4682             disable altivec
4683         ;;
4684         603*|ppc603*|powerpc603*)
4685             cpuflags="-mcpu=603"
4686             disable altivec
4687         ;;
4688         604*|ppc604*|powerpc604*)
4689             cpuflags="-mcpu=604"
4690             disable altivec
4691         ;;
4692         g3|75*|ppc75*|powerpc75*)
4693             cpuflags="-mcpu=750"
4694             disable altivec
4695         ;;
4696         g4|745*|ppc745*|powerpc745*)
4697             cpuflags="-mcpu=7450"
4698             disable vsx
4699         ;;
4700         74*|ppc74*|powerpc74*)
4701             cpuflags="-mcpu=7400"
4702             disable vsx
4703         ;;
4704         g5|970|ppc970|powerpc970)
4705             cpuflags="-mcpu=970"
4706             disable vsx
4707         ;;
4708         power[3-6]*)
4709             cpuflags="-mcpu=$cpu"
4710             disable vsx
4711         ;;
4712         power[7-8]*)
4713             cpuflags="-mcpu=$cpu"
4714         ;;
4715         cell)
4716             cpuflags="-mcpu=cell"
4717             enable ldbrx
4718             disable vsx
4719         ;;
4720         e500mc)
4721             cpuflags="-mcpu=e500mc"
4722             disable altivec
4723         ;;
4724         e500v2)
4725             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4726             disable altivec
4727             disable dcbzl
4728         ;;
4729         e500)
4730             cpuflags="-mcpu=8540 -mhard-float"
4731             disable altivec
4732             disable dcbzl
4733         ;;
4734     esac
4735
4736 elif enabled sparc; then
4737
4738     case $cpu in
4739         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4740             cpuflags="-mcpu=$cpu"
4741         ;;
4742         ultrasparc*|niagara[234])
4743             cpuflags="-mcpu=$cpu"
4744         ;;
4745     esac
4746
4747 elif enabled x86; then
4748
4749     case $cpu in
4750         i[345]86|pentium)
4751             cpuflags="-march=$cpu"
4752             disable i686
4753             disable mmx
4754         ;;
4755         # targets that do NOT support nopl and conditional mov (cmov)
4756         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4757             cpuflags="-march=$cpu"
4758             disable i686
4759         ;;
4760         # targets that do support nopl and conditional mov (cmov)
4761         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4762         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4763         |amdfam10|barcelona|b[dt]ver*|znver*)
4764             cpuflags="-march=$cpu"
4765             enable i686
4766             enable fast_cmov
4767         ;;
4768         # targets that do support conditional mov but on which it's slow
4769         pentium4|pentium4m|prescott|nocona)
4770             cpuflags="-march=$cpu"
4771             enable i686
4772             disable fast_cmov
4773         ;;
4774     esac
4775
4776 fi
4777
4778 if [ "$cpu" != generic ]; then
4779     add_cflags  $cpuflags
4780     add_asflags $cpuflags
4781     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4782 fi
4783
4784 # compiler sanity check
4785 check_exec <<EOF
4786 int main(void){ return 0; }
4787 EOF
4788 if test "$?" != 0; then
4789     echo "$cc is unable to create an executable file."
4790     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4791         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4792         echo "Only do this if you know what cross compiling means."
4793     fi
4794     die "C compiler test failed."
4795 fi
4796
4797 add_cppflags -D_ISOC99_SOURCE
4798 add_cxxflags -D__STDC_CONSTANT_MACROS
4799 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4800
4801 # some compilers silently accept -std=c11, so we also need to check that the
4802 # version macro is defined properly
4803 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4804     add_cflags -std=c11
4805 else
4806     check_cflags -std=c99
4807 fi
4808
4809 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4810 #include <stdlib.h>
4811 EOF
4812 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4813 #include <stdlib.h>
4814 EOF
4815
4816 add_host_cppflags -D_ISOC99_SOURCE
4817 check_host_cflags -std=c99
4818 check_host_cflags -Wall
4819 check_host_cflags $host_cflags_speed
4820
4821 check_64bit(){
4822     arch32=$1
4823     arch64=$2
4824     expr=$3
4825     check_code cc "" "int test[2*($expr) - 1]" &&
4826         subarch=$arch64 || subarch=$arch32
4827 }
4828
4829 case "$arch" in
4830     aarch64|alpha|ia64)
4831         spic=$shared
4832     ;;
4833     mips)
4834         check_64bit mips mips64 '_MIPS_SIM > 1'
4835         spic=$shared
4836     ;;
4837     parisc)
4838         check_64bit parisc parisc64 'sizeof(void *) > 4'
4839         spic=$shared
4840     ;;
4841     ppc)
4842         check_64bit ppc ppc64 'sizeof(void *) > 4'
4843         spic=$shared
4844     ;;
4845     s390)
4846         check_64bit s390 s390x 'sizeof(void *) > 4'
4847         spic=$shared
4848     ;;
4849     sparc)
4850         check_64bit sparc sparc64 'sizeof(void *) > 4'
4851         spic=$shared
4852     ;;
4853     x86)
4854         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4855         # Treat x32 as x64 for now. Note it also needs spic=$shared
4856         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4857             subarch=x86_64
4858         if test "$subarch" = "x86_64"; then
4859             spic=$shared
4860         fi
4861     ;;
4862     ppc)
4863         check_cc <<EOF && subarch="ppc64"
4864         int test[(int)sizeof(char*) - 7];
4865 EOF
4866     ;;
4867 esac
4868
4869 enable $subarch
4870 enabled spic && enable_weak pic
4871
4872 enabled x86_64 && objformat=elf64 || objformat="elf32"
4873
4874 # OS specific
4875 case $target_os in
4876     aix)
4877         SHFLAGS=-shared
4878         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4879         enabled shared && add_ldflags -Wl,-brtl
4880         ;;
4881     android)
4882         disable symver
4883         enable section_data_rel_ro
4884         SLIB_INSTALL_NAME='$(SLIBNAME)'
4885         SLIB_INSTALL_LINKS=
4886         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4887         ;;
4888     haiku)
4889         prefix_default="/boot/common"
4890         network_extralibs="-lnetwork"
4891         host_extralibs=
4892         ;;
4893     sunos)
4894         SHFLAGS='-shared -Wl,-h,$$(@F)'
4895         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4896         network_extralibs="-lsocket -lnsl"
4897         add_cppflags -D__EXTENSIONS__
4898         # When using suncc to build, the Solaris linker will mark
4899         # an executable with each instruction set encountered by
4900         # the Solaris assembler.  As our libraries contain their own
4901         # guards for processor-specific code, instead suppress
4902         # generation of the HWCAPS ELF section on Solaris x86 only.
4903         enabled_all suncc x86 &&
4904             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4905             add_ldflags -Wl,-M,mapfile
4906         nm_default='nm -P -g'
4907         version_script='-M'
4908         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4909         ;;
4910     netbsd)
4911         disable symver
4912         oss_indev_extralibs="-lossaudio"
4913         oss_outdev_extralibs="-lossaudio"
4914         enabled gcc || check_ldflags -Wl,-zmuldefs
4915         ;;
4916     openbsd|bitrig)
4917         disable symver
4918         SHFLAGS='-shared'
4919         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4920         SLIB_INSTALL_LINKS=
4921         oss_indev_extralibs="-lossaudio"
4922         oss_outdev_extralibs="-lossaudio"
4923         ;;
4924     dragonfly)
4925         disable symver
4926         ;;
4927     freebsd)
4928         ;;
4929     bsd/os)
4930         add_extralibs -lpoll -lgnugetopt
4931         strip="strip -d"
4932         ;;
4933     darwin)
4934         enabled ppc && add_asflags -force_cpusubtype_ALL
4935         install_name_dir_default='$(SHLIBDIR)'
4936         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4937         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4938         strip="${strip} -x"
4939         add_ldflags -Wl,-dynamic,-search_paths_first
4940         SLIBSUF=".dylib"
4941         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4942         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4943         objformat="macho"
4944         enabled x86_64 && objformat="macho64" || objformat="macho32"
4945         enabled_any pic shared x86_64 ||
4946             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4947         check_header dispatch/dispatch.h &&
4948             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4949         version_script='-exported_symbols_list'
4950         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4951         ;;
4952     msys*)
4953         die "Native MSYS builds are discouraged, please use the MINGW environment."
4954         ;;
4955     mingw32*|mingw64*)
4956         if test $target_os = "mingw32ce"; then
4957             disable network
4958         else
4959             target_os=mingw32
4960         fi
4961         LIBTARGET=i386
4962         if enabled x86_64; then
4963             LIBTARGET="i386:x86-64"
4964         elif enabled arm; then
4965             LIBTARGET=arm-wince
4966         fi
4967         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4968         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4969         shlibdir_default="$bindir_default"
4970         SLIBPREF=""
4971         SLIBSUF=".dll"
4972         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4973         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4974         dlltool="${cross_prefix}dlltool"
4975         if check_cmd lib.exe -list; then
4976             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4977             if enabled x86_64; then
4978                 LIBTARGET=x64
4979             fi
4980         elif check_cmd $dlltool --version; then
4981             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4982         fi
4983         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4984         SLIB_INSTALL_LINKS=
4985         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4986         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4987         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4988         enabled x86_64 && objformat="win64" || objformat="win32"
4989         ranlib=:
4990         enable dos_paths
4991         check_ldflags -Wl,--nxcompat,--dynamicbase
4992         # Lets work around some stupidity in binutils.
4993         # ld will strip relocations from executables even though we need them
4994         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4995         # however ld then forgets what the entry point should be (oops) so we
4996         # have to manually (re)set it.
4997         if enabled x86_32; then
4998             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4999         elif enabled x86_64; then
5000             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5001             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5002             # Set image base >4GB for extra entropy with HEASLR
5003             add_ldexeflags -Wl,--image-base,0x140000000
5004             append SHFLAGS -Wl,--image-base,0x180000000
5005         fi
5006         ;;
5007     win32|win64)
5008         disable symver
5009         if enabled shared; then
5010             # Link to the import library instead of the normal static library
5011             # for shared libs.
5012             LD_LIB='%.lib'
5013             # Cannot build both shared and static libs with MSVC or icl.
5014             disable static
5015         fi
5016         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5017         shlibdir_default="$bindir_default"
5018         SLIBPREF=""
5019         SLIBSUF=".dll"
5020         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5021         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5022         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5023         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5024         SLIB_INSTALL_LINKS=
5025         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5026         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5027         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5028         enabled x86_64 && objformat="win64" || objformat="win32"
5029         ranlib=:
5030         enable dos_paths
5031         ;;
5032     cygwin*)
5033         target_os=cygwin
5034         shlibdir_default="$bindir_default"
5035         SLIBPREF="cyg"
5036         SLIBSUF=".dll"
5037         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5038         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5039         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5040         SLIB_INSTALL_LINKS=
5041         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5042         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5043         enabled x86_64 && objformat="win64" || objformat="win32"
5044         enable dos_paths
5045         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5046         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5047         ;;
5048     *-dos|freedos|opendos)
5049         network_extralibs="-lsocket"
5050         objformat="coff"
5051         enable dos_paths
5052         add_cppflags -U__STRICT_ANSI__
5053         ;;
5054     linux)
5055         enable dv1394
5056         enable section_data_rel_ro
5057         enabled_any arm aarch64 && enable_weak linux_perf
5058         ;;
5059     irix*)
5060         target_os=irix
5061         ranlib="echo ignoring ranlib"
5062         ;;
5063     os/2*)
5064         strip="lxlite -CS"
5065         objformat="aout"
5066         add_cppflags -D_GNU_SOURCE
5067         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5068         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5069         LIBSUF="_s.a"
5070         SLIBPREF=""
5071         SLIBSUF=".dll"
5072         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5073         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5074         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5075             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5076             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5077             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5078             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5079         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5080             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5081         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5082         SLIB_INSTALL_LINKS=
5083         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5084         enable dos_paths
5085         enable_weak os2threads
5086         ;;
5087     gnu/kfreebsd)
5088         add_cppflags -D_BSD_SOURCE
5089         ;;
5090     gnu)
5091         ;;
5092     qnx)
5093         add_cppflags -D_QNX_SOURCE
5094         network_extralibs="-lsocket"
5095         ;;
5096     symbian)
5097         SLIBSUF=".dll"
5098         enable dos_paths
5099         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5100         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5101         add_ldflags -Wl,--target1-abs,--no-undefined \
5102                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5103                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5104         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5105                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5106                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5107         ;;
5108     osf1)
5109         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5110         ;;
5111     minix)
5112         ;;
5113     none)
5114         ;;
5115     *)
5116         die "Unknown OS '$target_os'."
5117         ;;
5118 esac
5119
5120 # test if creating links works
5121 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5122 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5123 mkdir "$link_dest"
5124 $ln_s "$link_dest" "$link_name"
5125 touch "$link_dest/test_file"
5126 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5127     # create link to source path
5128     [ -e src ] && rm src
5129     $ln_s "$source_path" src
5130     source_link=src
5131 else
5132     # creating directory links doesn't work
5133     # fall back to using the full source path
5134     source_link="$source_path"
5135 fi
5136 # cleanup
5137 rm -r "$link_dest"
5138 rm -r "$link_name"
5139
5140 # determine libc flavour
5141
5142 probe_libc(){
5143     pfx=$1
5144     pfx_no_=${pfx%_}
5145     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5146     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5147         eval ${pfx}libc_type=uclibc
5148         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5149     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5150         eval ${pfx}libc_type=glibc
5151         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5152     # MinGW headers can be installed on Cygwin, so check for newlib first.
5153     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5154         eval ${pfx}libc_type=newlib
5155         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5156     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5157     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5158         eval ${pfx}libc_type=mingw64
5159         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5160             add_compat msvcrt/snprintf.o
5161             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5162         fi
5163         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5164         eval test \$${pfx_no_}cc_type = "gcc" &&
5165             add_${pfx}cppflags -D__printf__=__gnu_printf__
5166     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5167          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5168         eval ${pfx}libc_type=mingw32
5169         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5170             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5171             die "ERROR: MinGW32 runtime version must be >= 3.15."
5172         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5173         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5174             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5175         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5176             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5177         eval test \$${pfx_no_}cc_type = "gcc" &&
5178             add_${pfx}cppflags -D__printf__=__gnu_printf__
5179     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5180         eval ${pfx}libc_type=msvcrt
5181         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5182             if [ "$pfx" = host_ ]; then
5183                 add_host_cppflags -Dsnprintf=_snprintf
5184             else
5185                 add_compat strtod.o strtod=avpriv_strtod
5186                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5187                                              _snprintf=avpriv_snprintf  \
5188                                              vsnprintf=avpriv_vsnprintf
5189             fi
5190         fi
5191         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5192         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5193         # 0x601 by default unless something else is set by the user.
5194         # This can easily lead to us detecting functions only present
5195         # in such new versions and producing binaries requiring windows 7.0.
5196         # Therefore explicitly set the default to XP unless the user has
5197         # set something else on the command line.
5198         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5199         # family. For these cases, configure is free to use any functions
5200         # found in the SDK headers by default. (Alternatively, we could force
5201         # _WIN32_WINNT to 0x0602 in that case.)
5202         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5203             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5204 #ifdef WINAPI_FAMILY
5205 #include <winapifamily.h>
5206 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5207 #error not desktop
5208 #endif
5209 #endif
5210 EOF
5211         if [ "$pfx" = "" ]; then
5212             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5213             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5214         fi
5215     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5216         eval ${pfx}libc_type=klibc
5217     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5218         eval ${pfx}libc_type=bionic
5219     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5220         eval ${pfx}libc_type=solaris
5221         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5222     fi
5223     check_${pfx}cc <<EOF
5224 #include <time.h>
5225 void *v = localtime_r;
5226 EOF
5227 test "$?" != 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
5228 #include <time.h>
5229 void *v = localtime_r;
5230 EOF
5231
5232 }
5233
5234 probe_libc
5235 test -n "$libc_type" && enable libc_$libc_type
5236 probe_libc host_
5237 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5238
5239 case $libc_type in
5240     bionic)
5241         add_compat strtod.o strtod=avpriv_strtod
5242         ;;
5243 esac
5244
5245 # hacks for compiler/libc/os combinations
5246
5247 if enabled_all tms470 libc_glibc; then
5248     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5249     add_cppflags -D__USER_LABEL_PREFIX__=
5250     add_cppflags -D__builtin_memset=memset
5251     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5252     add_cflags   -pds=48    # incompatible redefinition of macro
5253 fi
5254
5255 if enabled_all ccc libc_glibc; then
5256     add_ldflags -Wl,-z,now  # calls to libots crash without this
5257 fi
5258
5259 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5260     add_cppflags '-I\$(SRC_PATH)/compat/float'
5261
5262 esc(){
5263     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5264 }
5265
5266 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5267
5268 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5269
5270 set_default libdir
5271 : ${shlibdir_default:="$libdir"}
5272 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5273
5274 set_default $PATHS_LIST
5275 set_default nm
5276
5277 # we need to build at least one lib type
5278 if ! enabled_any static shared; then
5279     cat <<EOF
5280 At least one library type must be built.
5281 Specify --enable-static to build the static libraries or --enable-shared to
5282 build the shared libraries as well. To only build the shared libraries specify
5283 --disable-static in addition to --enable-shared.
5284 EOF
5285     exit 1
5286 fi
5287
5288 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5289
5290 enable_weak_pic() {
5291     disabled pic && return
5292     enable pic
5293     add_cppflags -DPIC
5294     case "$target_os" in
5295     mingw*|cygwin*)
5296         ;;
5297     *)
5298         add_cflags -fPIC
5299         ;;
5300     esac
5301     add_asflags  -fPIC
5302 }
5303
5304 enabled pic && enable_weak_pic
5305
5306 check_cc <<EOF || die "Symbol mangling check failed."
5307 int ff_extern;
5308 EOF
5309 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5310 extern_prefix=${sym%%ff_extern*}
5311
5312 check_cc <<EOF && enable_weak inline_asm
5313 void foo(void) { __asm__ volatile ("" ::); }
5314 EOF
5315
5316 _restrict=
5317 for restrict_keyword in restrict __restrict__ __restrict; do
5318     check_cc <<EOF && _restrict=$restrict_keyword && break
5319 void foo(char * $restrict_keyword p);
5320 EOF
5321 done
5322
5323 check_cc <<EOF && enable pragma_deprecated
5324 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5325 EOF
5326
5327 check_cc <<EOF && enable attribute_packed
5328 struct { int x; } __attribute__((packed)) x;
5329 EOF
5330
5331 check_cc <<EOF && enable attribute_may_alias
5332 union { int x; } __attribute__((may_alias)) x;
5333 EOF
5334
5335 check_cc <<EOF || die "endian test failed"
5336 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5337 EOF
5338 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5339
5340 check_cc <<EOF && enable const_nan
5341 #include <math.h>
5342 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5343 EOF
5344
5345 if ! enabled ppc64 || enabled bigendian; then
5346     disable vsx
5347 fi
5348
5349 check_gas() {
5350     log "check_gas using '$as' as AS"
5351     # :vararg is used on aarch64, arm and ppc altivec
5352     check_as <<EOF || return 1
5353 .macro m n, y:vararg=0
5354 \n: .int \y
5355 .endm
5356 m x
5357 EOF
5358     # .altmacro is only used in arm asm
5359     ! enabled arm || check_as <<EOF || return 1
5360 .altmacro
5361 EOF
5362     enable gnu_as
5363     return 0
5364 }
5365
5366 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5367     nogas=:
5368     enabled_any arm aarch64 && nogas=die
5369     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5370     as_noop=-v
5371
5372     case $as_type in
5373         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5374         gcc)  gaspp_as_type=gas ;;
5375         *)    gaspp_as_type=$as_type ;;
5376     esac
5377
5378     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5379
5380     test "${as#*gas-preprocessor.pl}" != "$as" ||
5381     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5382         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5383
5384     if ! check_gas ; then
5385         as=${gas:=$as}
5386         check_gas || \
5387             $nogas "GNU assembler not found, install/update gas-preprocessor"
5388     fi
5389
5390     check_as <<EOF && enable as_func
5391 .func test
5392 .endfunc
5393 EOF
5394 fi
5395
5396 check_inline_asm inline_asm_labels '"1:\n"'
5397
5398 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5399
5400 if enabled aarch64; then
5401     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5402     # internal assembler in clang 3.3 does not support this instruction
5403     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5404     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5405
5406     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5407
5408 elif enabled alpha; then
5409
5410     check_cflags -mieee
5411
5412 elif enabled arm; then
5413
5414     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5415
5416     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5417 float func(float a, float b){ return a+b; }
5418 EOF
5419
5420     enabled thumb && check_cflags -mthumb || check_cflags -marm
5421
5422     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5423         enable vfp_args
5424     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5425         enable vfp_args
5426     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5427         case "${cross_prefix:-$cc}" in
5428             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5429             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5430 __asm__ (".eabi_attribute 28, 1");
5431 int main(void) { return 0; }
5432 EOF
5433         esac
5434         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5435     fi
5436
5437     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5438     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5439     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5440     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5441     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5442     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5443     enabled setend  && check_insn setend  'setend be'
5444
5445     [ $target_os = linux ] || [ $target_os = android ] ||
5446         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5447             $ARCH_EXT_LIST_ARM
5448
5449     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5450
5451     check_as <<EOF && enable as_dn_directive
5452 ra .dn d0.i16
5453 .unreq ra
5454 EOF
5455     check_as <<EOF && enable as_fpu_directive
5456 .fpu neon
5457 EOF
5458
5459     # llvm's integrated assembler supports .object_arch from llvm 3.5
5460     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5461         check_as <<EOF && enable as_object_arch
5462 .object_arch armv4
5463 EOF
5464
5465     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5466
5467 elif enabled mips; then
5468
5469     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5470     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5471     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5472
5473     # Enable minimum ISA based on selected options
5474     if enabled mips64; then
5475         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5476         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5477         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5478     else
5479         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5480         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5481         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5482         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5483     fi
5484
5485     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5486     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5487     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5488     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5489     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5490
5491     if enabled bigendian && enabled msa; then
5492         disable msa
5493     fi
5494
5495 elif enabled parisc; then
5496
5497     if enabled gcc; then
5498         case $($cc -dumpversion) in
5499             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5500         esac
5501     fi
5502
5503 elif enabled ppc; then
5504
5505     enable local_aligned_8 local_aligned_16 local_aligned_32
5506
5507     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5508     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5509     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5510     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5511
5512     # AltiVec flags: The FSF version of GCC differs from the Apple version
5513     if enabled altivec; then
5514         check_cflags -maltivec -mabi=altivec &&
5515         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5516         check_cflags -faltivec
5517
5518         # check if our compiler supports Motorola AltiVec C API
5519         check_cc <<EOF || disable altivec
5520 $inc_altivec_h
5521 int main(void) {
5522     vector signed int v1 = (vector signed int) { 0 };
5523     vector signed int v2 = (vector signed int) { 1 };
5524     v1 = vec_add(v1, v2);
5525     return 0;
5526 }
5527 EOF
5528
5529         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5530     fi
5531
5532     if enabled vsx; then
5533         check_cflags -mvsx &&
5534         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5535     fi
5536
5537     if enabled power8; then
5538         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5539     fi
5540
5541 elif enabled x86; then
5542
5543     check_builtin rdtsc    intrin.h   "__rdtsc()"
5544     check_builtin mm_empty mmintrin.h "_mm_empty()"
5545
5546     enable local_aligned_8 local_aligned_16 local_aligned_32
5547
5548     # check whether EBP is available on x86
5549     # As 'i' is stored on the stack, this program will crash
5550     # if the base pointer is used to access it because the
5551     # base pointer is cleared in the inline assembly code.
5552     check_exec_crash <<EOF && enable ebp_available
5553 volatile int i=0;
5554 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5555 return i;
5556 EOF
5557
5558     # check whether EBX is available on x86
5559     check_inline_asm ebx_available '""::"b"(0)' &&
5560         check_inline_asm ebx_available '"":::"%ebx"'
5561
5562     # check whether xmm clobbers are supported
5563     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5564
5565     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5566         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5567
5568     # check whether binutils is new enough to compile SSSE3/MMXEXT
5569     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5570     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5571
5572     probe_x86asm(){
5573         x86asmexe_probe=$1
5574         if check_cmd $x86asmexe_probe -v; then
5575             x86asmexe=$x86asmexe_probe
5576             x86asm_type=nasm
5577             x86asm_debug="-g -F dwarf"
5578         elif check_cmd $x86asmexe_probe --version; then
5579             x86asmexe=$x86asmexe_probe
5580             x86asm_type=yasm
5581             x86asm_debug="-g dwarf2"
5582         fi
5583         check_x86asm "movbe ecx, [5]" && enable x86asm
5584     }
5585
5586     if ! disabled_any asm mmx x86asm; then
5587         disable x86asm
5588         for program in $x86asmexe nasm yasm; do
5589             probe_x86asm $program && break
5590         done
5591         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5592         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5593         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5594         X86ASMFLAGS="-f $objformat"
5595         enabled pic               && append X86ASMFLAGS "-DPIC"
5596         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5597         case "$objformat" in
5598             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5599         esac
5600
5601         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5602         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5603         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5604         check_x86asm "CPU amdnop" || disable cpunop
5605     fi
5606
5607     case "$cpu" in
5608         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5609             disable fast_clz
5610         ;;
5611     esac
5612
5613 fi
5614
5615 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5616
5617 check_ldflags -Wl,--as-needed
5618 check_ldflags -Wl,-z,noexecstack
5619
5620 if check_func dlopen && check_func dlsym; then
5621     ldl=
5622 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5623     ldl=-ldl
5624 fi
5625
5626 avisynth_demuxer_extralibs='$ldl'
5627 cuda_extralibs='$ldl'
5628 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5629 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5630 libndi_newtek_outdev_extralibs="$libndi_newtek_outdev_extralibs $ldl"
5631 libndi_newtek_indev_extralibs="$libndi_newtek_indev_extralibs $ldl"
5632 frei0r_filter_extralibs='$ldl'
5633 frei0r_src_filter_extralibs='$ldl'
5634 ladspa_filter_extralibs='$ldl'
5635 nvenc_extralibs='$ldl'
5636
5637 if ! disabled network; then
5638     check_func getaddrinfo $network_extralibs
5639     check_func inet_aton $network_extralibs
5640
5641     check_type netdb.h "struct addrinfo"
5642     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5643     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5644     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5645     check_type poll.h "struct pollfd"
5646     check_type netinet/sctp.h "struct sctp_event_subscribe"
5647     check_struct "sys/socket.h" "struct msghdr" msg_flags
5648     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5649     check_type netinet/in.h "struct sockaddr_in6"
5650     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5651     check_type "sys/types.h sys/socket.h" socklen_t
5652
5653     # Prefer arpa/inet.h over winsock2
5654     if check_header arpa/inet.h ; then
5655         check_func closesocket
5656     elif check_header winsock2.h ; then
5657         check_func_headers winsock2.h closesocket -lws2 &&
5658             network_extralibs="-lws2" ||
5659         { check_func_headers winsock2.h closesocket -lws2_32 &&
5660             network_extralibs="-lws2_32"; } || disable winsock2_h network
5661         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5662
5663         check_type ws2tcpip.h socklen_t
5664         check_type ws2tcpip.h "struct addrinfo"
5665         check_type ws2tcpip.h "struct group_source_req"
5666         check_type ws2tcpip.h "struct ip_mreq_source"
5667         check_type ws2tcpip.h "struct ipv6_mreq"
5668         check_type winsock2.h "struct pollfd"
5669         check_struct winsock2.h "struct sockaddr" sa_len
5670         check_type ws2tcpip.h "struct sockaddr_in6"
5671         check_type ws2tcpip.h "struct sockaddr_storage"
5672     else
5673         disable network
5674     fi
5675 fi
5676
5677 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5678 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5679 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5680 check_builtin sarestart signal.h "SA_RESTART"
5681 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5682 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5683 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5684 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5685 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5686
5687 case "$custom_allocator" in
5688     jemalloc)
5689         # jemalloc by default does not use a prefix
5690         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5691     ;;
5692     tcmalloc)
5693         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5694         malloc_prefix=tc_
5695     ;;
5696 esac
5697
5698 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5699 check_func  ${malloc_prefix}memalign            && enable memalign
5700 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5701
5702 check_func  access
5703 check_func_headers stdlib.h arc4random
5704 check_func_headers time.h clock_gettime ||
5705     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5706 check_func  fcntl
5707 check_func  fork
5708 check_func  gethrtime
5709 check_func  getopt
5710 check_func  getrusage
5711 check_func  gettimeofday
5712 check_func  isatty
5713 check_func  mach_absolute_time
5714 check_func  mkstemp
5715 check_func  mmap
5716 check_func  mprotect
5717 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5718 check_func_headers time.h nanosleep ||
5719     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5720 check_func  sched_getaffinity
5721 check_func  setrlimit
5722 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5723 check_func  strerror_r
5724 check_func  sysconf
5725 check_func  sysctl
5726 check_func  usleep
5727
5728 check_func_headers conio.h kbhit
5729 check_func_headers io.h setmode
5730 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5731 check_func_headers stdlib.h getenv
5732 check_func_headers sys/stat.h lstat
5733
5734 check_func_headers windows.h GetProcessAffinityMask
5735 check_func_headers windows.h GetProcessTimes
5736 check_func_headers windows.h GetSystemTimeAsFileTime
5737 check_func_headers windows.h LoadLibrary
5738 check_func_headers windows.h MapViewOfFile
5739 check_func_headers windows.h PeekNamedPipe
5740 check_func_headers windows.h SetConsoleTextAttribute
5741 check_func_headers windows.h SetConsoleCtrlHandler
5742 check_func_headers windows.h Sleep
5743 check_func_headers windows.h VirtualAlloc
5744 check_struct windows.h "CONDITION_VARIABLE" Ptr
5745 check_func_headers glob.h glob
5746 enabled xlib &&
5747     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5748
5749 check_header d3d11.h
5750 check_header direct.h
5751 check_header dirent.h
5752 check_header dlfcn.h
5753 check_header dxgidebug.h
5754 check_header dxva.h
5755 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5756 check_header io.h
5757 check_header libcrystalhd/libcrystalhd_if.h
5758 check_header mach/mach_time.h
5759 check_header malloc.h
5760 check_header net/udplite.h
5761 check_header poll.h
5762 check_header sys/mman.h
5763 check_header sys/param.h
5764 check_header sys/resource.h
5765 check_header sys/select.h
5766 check_header sys/time.h
5767 check_header sys/un.h
5768 check_header termios.h
5769 check_header unistd.h
5770 check_header valgrind/valgrind.h
5771 check_header VideoDecodeAcceleration/VDADecoder.h
5772 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5773 check_header windows.h
5774 check_header X11/extensions/XvMClib.h
5775 check_header asm/types.h
5776
5777 # it seems there are versions of clang in some distros that try to use the
5778 # gcc headers, which explodes for stdatomic
5779 # so we also check that atomics actually work here
5780 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5781
5782 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5783 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5784 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5785 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5786
5787 enabled appkit       && check_apple_framework AppKit
5788 enabled audiotoolbox && check_apple_framework AudioToolbox
5789 enabled avfoundation && check_apple_framework AVFoundation
5790 enabled coreimage    && check_apple_framework CoreImage
5791 enabled videotoolbox && check_apple_framework VideoToolbox
5792
5793 enabled avfoundation && {
5794     check_lib avfoundation CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5795     check_lib avfoundation ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5796
5797 enabled videotoolbox &&
5798     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5799
5800 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5801
5802 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5803 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5804 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5805 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5806 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5807
5808 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5809 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5810 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5811 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5812 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5813 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5814 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5815 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5816 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5817
5818 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5819
5820 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5821
5822 if ! disabled w32threads && ! enabled pthreads; then
5823     check_func_headers "windows.h process.h" _beginthreadex &&
5824         enable w32threads || disable w32threads
5825     if ! enabled w32threads && enabled winrt; then
5826         check_func_headers "windows.h" CreateThread &&
5827             enable w32threads || disable w32threads
5828     fi
5829 fi
5830
5831 # check for some common methods of building with pthread support
5832 # do this before the optional library checks as some of them require pthreads
5833 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5834     if check_lib pthreads pthread.h pthread_join   -pthread &&
5835        check_lib pthreads pthread.h pthread_create -pthread; then
5836         add_cflags -pthread
5837     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5838          check_lib pthreads pthread.h pthread_create -pthreads; then
5839         add_cflags -pthreads
5840     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5841          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5842         add_cflags -ldl -pthread
5843     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5844          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5845         :
5846     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5847          check_lib pthreads pthread.h pthread_create -lpthread; then
5848         :
5849     elif check_func pthread_join && check_func pthread_create; then
5850         enable pthreads
5851     fi
5852     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5853 fi
5854
5855
5856 if enabled pthreads; then
5857   check_func pthread_cancel
5858 fi
5859
5860 enabled pthreads &&
5861     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5862
5863 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5864 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5865 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5866
5867 check_lib libm math.h sin -lm && LIBM="-lm"
5868
5869 atan2f_args=2
5870 copysign_args=2
5871 hypot_args=2
5872 ldexpf_args=2
5873 powf_args=2
5874
5875 for func in $MATH_FUNCS; do
5876     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5877 done
5878
5879 for func in $COMPLEX_FUNCS; do
5880     eval check_complexfunc $func \${${func}_args:-1}
5881 done
5882
5883 # these are off by default, so fail if requested and not available
5884 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5885 enabled cuvid             && { enabled cuda ||
5886                                die "ERROR: CUVID requires CUDA"; }
5887 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5888 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5889                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5890 enabled libndi_newtek     && { check_header Processing.NDI.Lib.h || die "ERROR: Processing.NDI.Lib.h header not found"; }
5891 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5892 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5893 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5894 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5895 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5896 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5897 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5898 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5899 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5900 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5901                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5902                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5903 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5904 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5905 enabled libdrm            && require_pkg_config libdrm xf86drm.h drmGetVersion
5906 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5907                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5908                                  warn "using libfdk without pkg-config"; } }
5909 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"
5910 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5911 enabled fontconfig        && enable libfontconfig
5912 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5913 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5914 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5915 enabled libgme            && { use_pkg_config libgme gme/gme.h gme_new_emu ||
5916                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5917 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5918                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5919                                done || die "ERROR: libgsm not found"; }
5920 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5921 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5922 # While it may appear that require is being used as a pkg-config
5923 # fallback for libmfx, it is actually being used to detect a different
5924 # installation route altogether.  If libmfx is installed via the Intel
5925 # Media SDK or Intel Media Server Studio, these don't come with
5926 # pkg-config support.  Instead, users should make sure that the build
5927 # can find the libraries and headers through other means.
5928 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5929                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5930 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5931 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5932 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5933 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5934                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5935                                die "ERROR: libnpp not found"; }
5936 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5937 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5938 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5939                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5940                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5941                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5942 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5943 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5944                                check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 ||
5945                                { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5946                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5947                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5948                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5949                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5950                                die "ERROR: libopenjpeg not found"; }
5951 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5952 enabled libopus           && {
5953     enabled libopus_decoder && {
5954         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5955     }
5956     enabled libopus_encoder && {
5957         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5958     }
5959 }
5960 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5961 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5962 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5963 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5964 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5965 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5966                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5967 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5968 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5969 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5970 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5971 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5972 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5973 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5974                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5975                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5976 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5977 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5978 enabled libvmaf           && require_pkg_config libvmaf libvmaf.h compute_vmaf
5979 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5980 enabled libvorbis         && require_pkg_config vorbis vorbis/codec.h vorbis_info_init &&
5981                              require_pkg_config vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5982
5983 enabled libvpx            && {
5984     enabled libvpx_vp8_decoder && {
5985         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5986             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5987                 die "ERROR: libvpx decoder version must be >=0.9.1";
5988     }
5989     enabled libvpx_vp8_encoder && {
5990         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5991             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5992                 die "ERROR: libvpx encoder version must be >=0.9.7";
5993     }
5994     enabled libvpx_vp9_decoder && {
5995         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5996             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5997     }
5998     enabled libvpx_vp9_encoder && {
5999         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6000             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6001     }
6002     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6003         die "libvpx enabled but no supported decoders found"
6004     fi
6005 }
6006
6007 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6008 enabled libwebp           && {
6009     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6010     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
6011 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
6012                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6013                                  warn "using libx264 without pkg-config"; } } &&
6014                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
6015                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
6016                              { check_cpp_condition x264.h "X264_MPEG2" &&
6017                                enable libx262; }
6018 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
6019                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
6020                                die "ERROR: libx265 version must be >= 68."; }
6021 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
6022 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6023 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
6024 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
6025 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
6026                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6027                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6028 enabled libxml2           && require_pkg_config libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6029 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6030 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6031                                { ! enabled cross_compile &&
6032                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6033                                  add_ldflags -L/opt/vc/lib/ &&
6034                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6035                                die "ERROR: mmal not found" &&
6036                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6037 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6038                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6039                                die "ERROR: openal not found"; } &&
6040                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6041                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6042 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6043                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6044                                die "ERROR: opencl not found"; } &&
6045                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6046                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6047                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6048 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6049                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6050                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6051                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6052                                die "ERROR: opengl not found."
6053                              }
6054 enabled omx_rpi           && { check_header OMX_Core.h ||
6055                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6056                                die "ERROR: OpenMAX IL headers not found"; }
6057 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
6058 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
6059                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
6060                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6061                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6062                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6063                                die "ERROR: openssl not found"; }
6064
6065 if enabled gcrypt; then
6066     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6067     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6068         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6069         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6070         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6071             die "ERROR: gcrypt not found"
6072         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
6073     else
6074         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6075     fi
6076 fi
6077
6078 if enabled sdl2; then
6079     SDL2_CONFIG="${cross_prefix}sdl2-config"
6080     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
6081         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6082         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6083         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6084             disable sdl2
6085     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6086         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6087         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6088         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6089         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6090         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6091             disable sdl2
6092     else
6093         disable sdl2
6094     fi
6095     if test $target_os = "mingw32"; then
6096         sdl2_extralibs="$sdl2_extralibs -mconsole"
6097     fi
6098 fi
6099 enabled sdl2 && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
6100
6101 if enabled decklink; then
6102     case $target_os in
6103         mingw32*|mingw64*|win32|win64)
6104             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6105             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6106             ;;
6107     esac
6108 fi
6109
6110 enabled securetransport &&
6111     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6112     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6113         disable securetransport
6114
6115 enabled schannel &&
6116     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6117     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6118     add_extralibs -lsecur32 ||
6119         disable schannel
6120
6121 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6122 enabled makeinfo \
6123     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6124     && enable makeinfo_html || disable makeinfo_html
6125 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6126 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6127 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6128 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6129
6130 # check V4L2 codecs available in the API
6131 check_header linux/fb.h
6132 check_header linux/videodev2.h
6133 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6134 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6135 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6136 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6137 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6138 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6139 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6140 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6141 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6142 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6143 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6144
6145 check_header sys/videoio.h
6146 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6147
6148 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6149 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6150 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6151 # w32api 3.12 had it defined wrong
6152 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6153
6154 check_type "dshow.h" IBaseFilter
6155
6156 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6157 { check_header dev/bktr/ioctl_meteor.h &&
6158   check_header dev/bktr/ioctl_bt848.h; } ||
6159 { check_header machine/ioctl_meteor.h &&
6160   check_header machine/ioctl_bt848.h; } ||
6161 { check_header dev/video/meteor/ioctl_meteor.h &&
6162   check_header dev/video/bktr/ioctl_bt848.h; } ||
6163 check_header dev/ic/bt8xx.h
6164
6165 if check_struct sys/soundcard.h audio_buf_info bytes; then
6166     enable_safe sys/soundcard.h
6167 else
6168     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6169     #include <sys/soundcard.h>
6170     audio_buf_info abc;
6171 EOF
6172 fi
6173 check_header soundcard.h
6174
6175 enabled alsa && check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6176
6177 enabled jack && check_lib jack jack/jack.h jack_client_open -ljack &&
6178     check_func jack_port_get_latency_range -ljack
6179
6180 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6181
6182 if enabled libcdio; then
6183     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6184     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6185     die "ERROR: No usable libcdio/cdparanoia found"
6186 fi
6187
6188 enabled libxcb && check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || disable libxcb
6189
6190 if enabled libxcb; then
6191
6192     enabled libxcb_shm    && check_pkg_config xcb-shm    xcb/shm.h    xcb_shm_attach              || disable libxcb_shm
6193     enabled libxcb_shape  && check_pkg_config xcb-shape  xcb/shape.h  xcb_shape_get_rectangles    || disable libxcb_shape
6194     enabled libxcb_xfixes && check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || disable libxcb_xfixes
6195
6196     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6197     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6198 fi
6199
6200 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6201
6202 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6203 # the desktop api partition
6204 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6205 #ifdef WINAPI_FAMILY
6206 #include <winapifamily.h>
6207 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6208 #error desktop, not uwp
6209 #else
6210 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6211 #endif
6212 #else
6213 #error no family set
6214 #endif
6215 EOF
6216
6217 enabled vaapi &&
6218     check_lib vaapi va/va.h vaInitialize -lva
6219
6220 enabled vaapi &&
6221     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6222     disable vaapi
6223
6224 enabled vaapi &&
6225     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6226
6227 enabled vaapi &&
6228     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6229
6230 enabled vdpau &&
6231     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6232     disable vdpau
6233
6234 enabled vdpau &&
6235     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6236
6237 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6238
6239 if enabled x86; then
6240     case $target_os in
6241         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6242             ;;
6243         *)
6244             disable cuda cuvid nvenc
6245             ;;
6246     esac
6247 else
6248     disable cuda cuvid nvenc
6249 fi
6250
6251 enabled nvenc &&
6252     check_cc -I$source_path <<EOF || disable nvenc
6253 #include "compat/nvenc/nvEncodeAPI.h"
6254 NV_ENCODE_API_FUNCTION_LIST flist;
6255 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6256 int main(void) { return 0; }
6257 EOF
6258
6259 # Funny iconv installations are not unusual, so check it after all flags have been set
6260 if enabled libc_iconv; then
6261     check_func_headers iconv.h iconv
6262 elif enabled iconv; then
6263     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6264 fi
6265
6266 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6267
6268 # add some useful compiler flags if supported
6269 check_cflags -Wdeclaration-after-statement
6270 check_cflags -Wall
6271 check_cflags -Wdisabled-optimization
6272 check_cflags -Wpointer-arith
6273 check_cflags -Wredundant-decls
6274 check_cflags -Wwrite-strings
6275 check_cflags -Wtype-limits
6276 check_cflags -Wundef
6277 check_cflags -Wmissing-prototypes
6278 check_cflags -Wno-pointer-to-int-cast
6279 check_cflags -Wstrict-prototypes
6280 check_cflags -Wempty-body
6281
6282 if enabled extra_warnings; then
6283     check_cflags -Wcast-qual
6284     check_cflags -Wextra
6285     check_cflags -Wpedantic
6286 fi
6287
6288 check_disable_warning(){
6289     warning_flag=-W${1#-Wno-}
6290     test_cflags $warning_flag && add_cflags $1
6291 }
6292
6293 check_disable_warning -Wno-parentheses
6294 check_disable_warning -Wno-switch
6295 check_disable_warning -Wno-format-zero-length
6296 check_disable_warning -Wno-pointer-sign
6297 check_disable_warning -Wno-unused-const-variable
6298
6299 check_disable_warning_headers(){
6300     warning_flag=-W${1#-Wno-}
6301     test_cflags $warning_flag && add_cflags_headers $1
6302 }
6303
6304 check_disable_warning_headers -Wno-deprecated-declarations
6305 check_disable_warning_headers -Wno-unused-variable
6306
6307 check_cc <<EOF && enable blocks_extension
6308 void (^block)(void);
6309 EOF
6310
6311 # add some linker flags
6312 check_ldflags -Wl,--warn-common
6313 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6314 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6315 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6316 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6317
6318 # add some strip flags
6319 check_stripflags -x
6320
6321 enabled neon_clobber_test &&
6322     check_ldflags -Wl,--wrap,avcodec_open2              \
6323                   -Wl,--wrap,avcodec_decode_audio4      \
6324                   -Wl,--wrap,avcodec_decode_video2      \
6325                   -Wl,--wrap,avcodec_decode_subtitle2   \
6326                   -Wl,--wrap,avcodec_encode_audio2      \
6327                   -Wl,--wrap,avcodec_encode_video2      \
6328                   -Wl,--wrap,avcodec_encode_subtitle    \
6329                   -Wl,--wrap,avcodec_send_packet        \
6330                   -Wl,--wrap,avcodec_receive_packet     \
6331                   -Wl,--wrap,avcodec_send_frame         \
6332                   -Wl,--wrap,avcodec_receive_frame      \
6333                   -Wl,--wrap,swr_convert                \
6334                   -Wl,--wrap,avresample_convert ||
6335     disable neon_clobber_test
6336
6337 enabled xmm_clobber_test &&
6338     check_ldflags -Wl,--wrap,avcodec_open2              \
6339                   -Wl,--wrap,avcodec_decode_audio4      \
6340                   -Wl,--wrap,avcodec_decode_video2      \
6341                   -Wl,--wrap,avcodec_decode_subtitle2   \
6342                   -Wl,--wrap,avcodec_encode_audio2      \
6343                   -Wl,--wrap,avcodec_encode_video2      \
6344                   -Wl,--wrap,avcodec_encode_subtitle    \
6345                   -Wl,--wrap,avcodec_send_packet        \
6346                   -Wl,--wrap,avcodec_receive_packet     \
6347                   -Wl,--wrap,avcodec_send_frame         \
6348                   -Wl,--wrap,avcodec_receive_frame      \
6349                   -Wl,--wrap,swr_convert                \
6350                   -Wl,--wrap,avresample_convert         \
6351                   -Wl,--wrap,sws_scale ||
6352     disable xmm_clobber_test
6353
6354 check_ld "cc" <<EOF && enable proper_dce
6355 extern const int array[512];
6356 static inline int func(void) { return array[0]; }
6357 int main(void) { return 0; }
6358 EOF
6359
6360 if enabled proper_dce; then
6361     echo "X { local: *; };" > $TMPV
6362     if test_ldflags -Wl,${version_script},$TMPV; then
6363         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6364         check_cc <<EOF && enable symver_asm_label
6365 void ff_foo(void) __asm__ ("av_foo@VERSION");
6366 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6367 EOF
6368         check_cc <<EOF && enable symver_gnu_asm
6369 __asm__(".symver ff_foo,av_foo@VERSION");
6370 void ff_foo(void) {}
6371 EOF
6372     fi
6373 fi
6374
6375 if [ -z "$optflags" ]; then
6376     if enabled small; then
6377         optflags=$cflags_size
6378     elif enabled optimizations; then
6379         optflags=$cflags_speed
6380     else
6381         optflags=$cflags_noopt
6382     fi
6383 fi
6384
6385 if [ -z "$nvccflags" ]; then
6386     nvccflags=$nvccflags_default
6387 fi
6388
6389 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6390     nvccflags="$nvccflags -m64"
6391 else
6392     nvccflags="$nvccflags -m32"
6393 fi
6394
6395 check_optflags(){
6396     check_cflags "$@"
6397     enabled lto && check_ldflags "$@"
6398 }
6399
6400 check_optflags $optflags
6401 check_optflags -fno-math-errno
6402 check_optflags -fno-signed-zeros
6403
6404 if enabled lto; then
6405     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6406     check_cflags  -flto
6407     check_ldflags -flto $cpuflags
6408     disable inline_asm_direct_symbol_refs
6409 fi
6410
6411 enabled ftrapv && check_cflags -ftrapv
6412
6413 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6414 int x;
6415 EOF
6416
6417
6418 if enabled icc; then
6419     # Just warnings, no remarks
6420     check_cflags -w1
6421     # -wd: Disable following warnings
6422     # 144, 167, 556: -Wno-pointer-sign
6423     # 188: enumerated type mixed with another type
6424     # 1292: attribute "foo" ignored
6425     # 1419: external declaration in primary source file
6426     # 10006: ignoring unknown option -fno-signed-zeros
6427     # 10148: ignoring unknown option -Wno-parentheses
6428     # 10156: ignoring option '-W'; no argument required
6429     # 13200: No EMMS instruction before call to function
6430     # 13203: No EMMS instruction before return from function
6431     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6432     # 11030: Warning unknown option --as-needed
6433     # 10156: ignoring option '-export'; no argument required
6434     check_ldflags -wd10156,11030
6435     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6436     enable ebp_available
6437     # The test above does not test linking
6438     enabled lto && disable symver_asm_label
6439     if enabled x86_32; then
6440         icc_version=$($cc -dumpversion)
6441         test ${icc_version%%.*} -ge 11 &&
6442             check_cflags -falign-stack=maintain-16-byte ||
6443             disable aligned_stack
6444     fi
6445 elif enabled ccc; then
6446     # disable some annoying warnings
6447     add_cflags -msg_disable bitnotint
6448     add_cflags -msg_disable mixfuncvoid
6449     add_cflags -msg_disable nonstandcast
6450     add_cflags -msg_disable unsupieee
6451 elif enabled gcc; then
6452     check_optflags -fno-tree-vectorize
6453     check_cflags -Werror=format-security
6454     check_cflags -Werror=implicit-function-declaration
6455     check_cflags -Werror=missing-prototypes
6456     check_cflags -Werror=return-type
6457     check_cflags -Werror=vla
6458     check_cflags -Wformat
6459     check_cflags -fdiagnostics-color=auto
6460     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6461 elif enabled llvm_gcc; then
6462     check_cflags -mllvm -stack-alignment=16
6463 elif enabled clang; then
6464     check_cflags -mllvm -stack-alignment=16
6465     check_cflags -mstack-alignment=16
6466     check_cflags -Qunused-arguments
6467     check_cflags -Werror=implicit-function-declaration
6468     check_cflags -Werror=missing-prototypes
6469     check_cflags -Werror=return-type
6470 elif enabled cparser; then
6471     add_cflags -Wno-missing-variable-declarations
6472     add_cflags -Wno-empty-statement
6473 elif enabled armcc; then
6474     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6475     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6476     # 2523: use of inline assembly is deprecated
6477     add_cflags -W${armcc_opt},--diag_suppress=2523
6478     add_cflags -W${armcc_opt},--diag_suppress=1207
6479     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6480     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6481     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6482     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6483 elif enabled tms470; then
6484     add_cflags -pds=824 -pds=837
6485     disable inline_asm
6486 elif enabled pathscale; then
6487     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6488 elif enabled_any msvc icl; then
6489     enabled x86_32 && disable aligned_stack
6490     enabled_all x86_32 debug && add_cflags -Oy-
6491     enabled debug && add_ldflags -debug
6492     enable pragma_deprecated
6493     if enabled icl; then
6494         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6495         # (correctly) on icl 13.x.
6496         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6497             add_cflags -Qansi-alias
6498         # Some inline asm is not compilable in debug
6499         if enabled debug; then
6500             disable ebp_available
6501             disable ebx_available
6502         fi
6503     fi
6504     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6505     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6506     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6507     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6508     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6509     # MSVC 2013 and newer can handle it fine.
6510     # If this declspec fails, force including stdlib.h before the restrict redefinition
6511     # happens in config.h.
6512     if [ $_restrict != restrict ]; then
6513         check_cc <<EOF || add_cflags -FIstdlib.h
6514 __declspec($_restrict) void* foo(int);
6515 EOF
6516     fi
6517     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6518     # Issue has been fixed in MSVC v19.00.24218.
6519     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6520         check_cflags -d2SSAOptimizer-
6521     # enable utf-8 source processing on VS2015 U2 and newer
6522     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6523         add_cflags -utf-8
6524 fi
6525
6526 for pfx in "" host_; do
6527     varname=${pfx%_}cc_type
6528     eval "type=\$$varname"
6529     if [ "$type" = "msvc" ]; then
6530         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6531 static inline int foo(int a) { return a; }
6532 EOF
6533     fi
6534 done
6535
6536 case $as_type in
6537     clang)
6538         add_asflags -Qunused-arguments
6539     ;;
6540 esac
6541
6542 case $ld_type in
6543     clang)
6544         check_ldflags -Qunused-arguments
6545     ;;
6546 esac
6547
6548 case $target_os in
6549     osf1)
6550         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6551     ;;
6552 esac
6553
6554 enable frame_thread_encoder
6555
6556 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6557
6558 check_deps $CONFIG_LIST       \
6559            $CONFIG_EXTRA      \
6560            $HAVE_LIST         \
6561            $ALL_COMPONENTS    \
6562
6563 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"
6564
6565
6566 if test $target_os = "haiku"; then
6567     disable memalign
6568     disable posix_memalign
6569 fi
6570
6571 # add_dep lib dep
6572 # -> enable ${lib}_deps_${dep}
6573 # -> add $dep to ${lib}_deps only once
6574 add_dep() {
6575     lib=$1
6576     dep=$2
6577     enabled "${lib}_deps_${dep}" && return 0
6578     enable  "${lib}_deps_${dep}"
6579     prepend "${lib}_deps" $dep
6580 }
6581
6582 # merge deps lib components
6583 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6584 merge_deps() {
6585     lib=$1
6586     shift
6587     for comp in $*; do
6588         enabled $comp || continue
6589         eval "dep=\"\$${comp}_deps\""
6590         for d in $dep; do
6591             add_dep $lib $d
6592         done
6593     done
6594 }
6595
6596 merge_deps libavfilter $FILTER_LIST
6597
6598 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6599
6600 for thread in $THREADS_LIST; do
6601     if enabled $thread; then
6602         test -n "$thread_type" &&
6603             die "ERROR: Only one thread type must be selected." ||
6604             thread_type="$thread"
6605     fi
6606 done
6607
6608 if disabled stdatomic_h; then
6609     if enabled atomics_gcc; then
6610         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6611     elif enabled atomics_win32; then
6612         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6613     elif enabled atomics_suncc; then
6614         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6615     elif enabled pthreads; then
6616         add_compat atomics/pthread/stdatomic.o
6617         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6618     else
6619         enabled threads && die "Threading is enabled, but no atomics are available"
6620         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6621     fi
6622 fi
6623
6624 # Check if requested libraries were found.
6625 for lib in $AUTODETECT_LIBS; do
6626     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6627 done
6628
6629 enabled zlib && add_cppflags -DZLIB_CONST
6630
6631 # conditional library dependencies, in linking order
6632 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6633 enabled afir_filter         && prepend avfilter_deps "avcodec"
6634 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6635 enabled aresample_filter    && prepend avfilter_deps "swresample"
6636 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6637 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6638 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6639 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6640 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6641 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6642 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6643 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6644 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6645 enabled pan_filter          && prepend avfilter_deps "swresample"
6646 enabled pp_filter           && prepend avfilter_deps "postproc"
6647 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6648 enabled resample_filter && prepend avfilter_deps "avresample"
6649 enabled sab_filter          && prepend avfilter_deps "swscale"
6650 enabled scale_filter    && prepend avfilter_deps "swscale"
6651 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6652 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6653 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6654 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6655 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6656 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6657 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6658 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6659 enabled spp_filter          && prepend avfilter_deps "avcodec"
6660 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6661 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6662 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6663
6664 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6665
6666 enabled opus_decoder    && prepend avcodec_deps "swresample"
6667
6668 expand_deps(){
6669     lib_deps=${1}_deps
6670     eval "deps=\$$lib_deps"
6671     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6672     unique $lib_deps
6673 }
6674
6675 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6676 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6677
6678 map 'expand_deps $v' $LIBRARY_LIST
6679
6680 license="LGPL version 2.1 or later"
6681 if enabled nonfree; then
6682     license="nonfree and unredistributable"
6683 elif enabled gplv3; then
6684     license="GPL version 3 or later"
6685 elif enabled lgplv3; then
6686     license="LGPL version 3 or later"
6687 elif enabled gpl; then
6688     license="GPL version 2 or later"
6689 fi
6690
6691 if test "$quiet" != "yes"; then
6692
6693 echo "install prefix            $prefix"
6694 echo "source path               $source_path"
6695 echo "C compiler                $cc"
6696 echo "C library                 $libc_type"
6697 if test "$host_cc" != "$cc"; then
6698     echo "host C compiler           $host_cc"
6699     echo "host C library            $host_libc_type"
6700 fi
6701 echo "ARCH                      $arch ($cpu)"
6702 if test "$build_suffix" != ""; then
6703     echo "build suffix              $build_suffix"
6704 fi
6705 if test "$progs_suffix" != ""; then
6706     echo "progs suffix              $progs_suffix"
6707 fi
6708 if test "$extra_version" != ""; then
6709     echo "version string suffix     $extra_version"
6710 fi
6711 echo "big-endian                ${bigendian-no}"
6712 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6713 if enabled x86; then
6714     echo "standalone assembly       ${x86asm-no}"
6715     echo "x86 assembler             ${x86asmexe}"
6716     echo "MMX enabled               ${mmx-no}"
6717     echo "MMXEXT enabled            ${mmxext-no}"
6718     echo "3DNow! enabled            ${amd3dnow-no}"
6719     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6720     echo "SSE enabled               ${sse-no}"
6721     echo "SSSE3 enabled             ${ssse3-no}"
6722     echo "AESNI enabled             ${aesni-no}"
6723     echo "AVX enabled               ${avx-no}"
6724     echo "AVX2 enabled              ${avx2-no}"
6725     echo "XOP enabled               ${xop-no}"
6726     echo "FMA3 enabled              ${fma3-no}"
6727     echo "FMA4 enabled              ${fma4-no}"
6728     echo "i686 features enabled     ${i686-no}"
6729     echo "CMOV is fast              ${fast_cmov-no}"
6730     echo "EBX available             ${ebx_available-no}"
6731     echo "EBP available             ${ebp_available-no}"
6732 fi
6733 if enabled aarch64; then
6734     echo "NEON enabled              ${neon-no}"
6735     echo "VFP enabled               ${vfp-no}"
6736 fi
6737 if enabled arm; then
6738     echo "ARMv5TE enabled           ${armv5te-no}"
6739     echo "ARMv6 enabled             ${armv6-no}"
6740     echo "ARMv6T2 enabled           ${armv6t2-no}"
6741     echo "VFP enabled               ${vfp-no}"
6742     echo "NEON enabled              ${neon-no}"
6743     echo "THUMB enabled             ${thumb-no}"
6744 fi
6745 if enabled mips; then
6746     echo "MIPS FPU enabled          ${mipsfpu-no}"
6747     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6748     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6749     echo "MIPS MSA enabled          ${msa-no}"
6750     echo "LOONGSON MMI enabled      ${mmi-no}"
6751 fi
6752 if enabled ppc; then
6753     echo "AltiVec enabled           ${altivec-no}"
6754     echo "VSX enabled               ${vsx-no}"
6755     echo "POWER8 enabled            ${power8-no}"
6756     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6757     echo "dcbzl available           ${dcbzl-no}"
6758 fi
6759 echo "debug symbols             ${debug-no}"
6760 echo "strip symbols             ${stripping-no}"
6761 echo "optimize for size         ${small-no}"
6762 echo "optimizations             ${optimizations-no}"
6763 echo "static                    ${static-no}"
6764 echo "shared                    ${shared-no}"
6765 echo "postprocessing support    ${postproc-no}"
6766 echo "network support           ${network-no}"
6767 echo "threading support         ${thread_type-no}"
6768 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6769 echo "texi2html enabled         ${texi2html-no}"
6770 echo "perl enabled              ${perl-no}"
6771 echo "pod2man enabled           ${pod2man-no}"
6772 echo "makeinfo enabled          ${makeinfo-no}"
6773 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6774 test -n "$random_seed" &&
6775     echo "random seed               ${random_seed}"
6776 echo
6777
6778 echo "External libraries:"
6779 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6780 echo
6781
6782 echo "External libraries providing hardware acceleration:"
6783 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6784 echo
6785
6786 echo "Libraries:"
6787 print_enabled '' $LIBRARY_LIST | print_in_columns
6788 echo
6789
6790 echo "Programs:"
6791 print_enabled '' $PROGRAM_LIST | print_in_columns
6792 echo
6793
6794 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6795     echo "Enabled ${type}s:"
6796     eval list=\$$(toupper $type)_LIST
6797     print_enabled '_*' $list | print_in_columns
6798     echo
6799 done
6800
6801 if test -n "$ignore_tests"; then
6802     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6803     echo "Ignored FATE tests:"
6804     echo $ignore_tests | print_in_columns
6805     echo
6806 fi
6807
6808 echo "License: $license"
6809
6810 echo "Creating configuration files ..."
6811
6812 fi # test "$quiet" != "yes"
6813
6814 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6815
6816 enabled stripping || strip="echo skipping strip"
6817
6818 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6819
6820 cat > ffbuild/config.mak <<EOF
6821 # Automatically generated by configure - do not modify!
6822 ifndef FFMPEG_CONFIG_MAK
6823 FFMPEG_CONFIG_MAK=1
6824 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6825 prefix=$prefix
6826 LIBDIR=\$(DESTDIR)$libdir
6827 SHLIBDIR=\$(DESTDIR)$shlibdir
6828 INCDIR=\$(DESTDIR)$incdir
6829 BINDIR=\$(DESTDIR)$bindir
6830 DATADIR=\$(DESTDIR)$datadir
6831 DOCDIR=\$(DESTDIR)$docdir
6832 MANDIR=\$(DESTDIR)$mandir
6833 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6834 INSTALL_NAME_DIR=$install_name_dir
6835 SRC_PATH=$source_path
6836 SRC_LINK=$source_link
6837 ifndef MAIN_MAKEFILE
6838 SRC_PATH:=\$(SRC_PATH:.%=..%)
6839 endif
6840 CC_IDENT=$cc_ident
6841 ARCH=$arch
6842 INTRINSICS=$intrinsics
6843 CC=$cc
6844 CXX=$cxx
6845 AS=$as
6846 OBJCC=$objcc
6847 LD=$ld
6848 DEPCC=$dep_cc
6849 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6850 DEPAS=$as
6851 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6852 X86ASM=$x86asmexe
6853 DEPX86ASM=$x86asmexe
6854 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6855 AR=$ar
6856 ARFLAGS=$arflags
6857 AR_O=$ar_o
6858 RANLIB=$ranlib
6859 STRIP=$strip
6860 NVCC=$nvcc
6861 CP=cp -p
6862 LN_S=$ln_s
6863 CPPFLAGS=$CPPFLAGS
6864 CFLAGS=$CFLAGS
6865 CXXFLAGS=$CXXFLAGS
6866 OBJCFLAGS=$OBJCFLAGS
6867 ASFLAGS=$ASFLAGS
6868 NVCCFLAGS=$nvccflags
6869 AS_C=$AS_C
6870 AS_O=$AS_O
6871 OBJCC_C=$OBJCC_C
6872 OBJCC_E=$OBJCC_E
6873 OBJCC_O=$OBJCC_O
6874 CC_C=$CC_C
6875 CC_E=$CC_E
6876 CC_O=$CC_O
6877 CXX_C=$CXX_C
6878 CXX_O=$CXX_O
6879 NVCC_C=$NVCC_C
6880 NVCC_O=$NVCC_O
6881 LD_O=$LD_O
6882 X86ASM_O=$X86ASM_O
6883 LD_LIB=$LD_LIB
6884 LD_PATH=$LD_PATH
6885 DLLTOOL=$dlltool
6886 WINDRES=$windres
6887 DEPWINDRES=$dep_cc
6888 DOXYGEN=$doxygen
6889 LDFLAGS=$LDFLAGS
6890 LDEXEFLAGS=$LDEXEFLAGS
6891 LDLIBFLAGS=$LDLIBFLAGS
6892 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6893 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6894 X86ASMFLAGS=$X86ASMFLAGS
6895 BUILDSUF=$build_suffix
6896 PROGSSUF=$progs_suffix
6897 FULLNAME=$FULLNAME
6898 LIBPREF=$LIBPREF
6899 LIBSUF=$LIBSUF
6900 LIBNAME=$LIBNAME
6901 SLIBPREF=$SLIBPREF
6902 SLIBSUF=$SLIBSUF
6903 EXESUF=$EXESUF
6904 EXTRA_VERSION=$extra_version
6905 CCDEP=$CCDEP
6906 CXXDEP=$CXXDEP
6907 CCDEP_FLAGS=$CCDEP_FLAGS
6908 ASDEP=$ASDEP
6909 ASDEP_FLAGS=$ASDEP_FLAGS
6910 X86ASMDEP=$X86ASMDEP
6911 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6912 CC_DEPFLAGS=$CC_DEPFLAGS
6913 AS_DEPFLAGS=$AS_DEPFLAGS
6914 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6915 HOSTCC=$host_cc
6916 HOSTLD=$host_ld
6917 HOSTCFLAGS=$host_cflags
6918 HOSTCPPFLAGS=$host_cppflags
6919 HOSTEXESUF=$HOSTEXESUF
6920 HOSTLDFLAGS=$host_ldflags
6921 HOSTEXTRALIBS=$host_extralibs
6922 DEPHOSTCC=$host_cc
6923 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6924 HOSTCCDEP=$HOSTCCDEP
6925 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6926 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6927 HOSTCC_C=$HOSTCC_C
6928 HOSTCC_O=$HOSTCC_O
6929 HOSTLD_O=$HOSTLD_O
6930 TARGET_EXEC=$target_exec $target_exec_args
6931 TARGET_PATH=$target_path
6932 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6933 CFLAGS-ffplay=${sdl2_cflags}
6934 CFLAGS_HEADERS=$CFLAGS_HEADERS
6935 ZLIB=$($ldflags_filter -lz)
6936 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6937 EXTRALIBS=$extralibs
6938 COMPAT_OBJS=$compat_objs
6939 INSTALL=$install
6940 LIBTARGET=${LIBTARGET}
6941 SLIBNAME=${SLIBNAME}
6942 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6943 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6944 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6945 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6946 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6947 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6948 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6949 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6950 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6951 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6952 NOREDZONE_FLAGS=$noredzone_flags
6953 LIBFUZZER_PATH=$libfuzzer_path
6954 IGNORE_TESTS=$ignore_tests
6955 EOF
6956
6957 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6958
6959 print_program_extralibs(){
6960     eval "program_extralibs=\$${1}_extralibs"
6961     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6962 }
6963
6964 map 'print_program_extralibs $v' $PROGRAM_LIST
6965
6966 cat > $TMPH <<EOF
6967 /* Automatically generated by configure - do not modify! */
6968 #ifndef FFMPEG_CONFIG_H
6969 #define FFMPEG_CONFIG_H
6970 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6971 #define FFMPEG_LICENSE "$(c_escape $license)"
6972 #define CONFIG_THIS_YEAR 2017
6973 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6974 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6975 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6976 #define av_restrict $_restrict
6977 #define EXTERN_PREFIX "${extern_prefix}"
6978 #define EXTERN_ASM ${extern_prefix}
6979 #define BUILDSUF "$build_suffix"
6980 #define SLIBSUF "$SLIBSUF"
6981 #define HAVE_MMX2 HAVE_MMXEXT
6982 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6983 EOF
6984
6985 test -n "$assert_level" &&
6986     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6987
6988 test -n "$malloc_prefix" &&
6989     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6990
6991 if enabled x86asm; then
6992     append config_files $TMPASM
6993     printf '' >$TMPASM
6994 fi
6995
6996 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6997
6998
6999 mkdir -p doc
7000 mkdir -p tests
7001 mkdir -p tests/api
7002 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7003
7004 print_config ARCH_   "$config_files" $ARCH_LIST
7005 print_config HAVE_   "$config_files" $HAVE_LIST
7006 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7007                                      $CONFIG_EXTRA      \
7008                                      $ALL_COMPONENTS    \
7009
7010 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7011 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7012
7013 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7014 cp_if_changed $TMPH config.h
7015 touch ffbuild/.config
7016
7017 enabled x86asm && cp_if_changed $TMPASM config.asm
7018
7019 cat > $TMPH <<EOF
7020 /* Generated by ffconf */
7021 #ifndef AVUTIL_AVCONFIG_H
7022 #define AVUTIL_AVCONFIG_H
7023 EOF
7024
7025 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7026
7027 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7028
7029 cp_if_changed $TMPH libavutil/avconfig.h
7030
7031 # generate the lists of enabled components
7032 print_enabled_components(){
7033     file=$1
7034     struct_name=$2
7035     name=$3
7036     shift 3
7037     echo "static const $struct_name *$name[] = {" > $TMPH
7038     for c in $*; do
7039         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7040     done
7041     echo "    NULL };" >> $TMPH
7042     cp_if_changed $TMPH $file
7043 }
7044
7045 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7046 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7047
7048 if test -n "$WARNINGS"; then
7049     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7050     enabled fatal_warnings && exit 1
7051 fi
7052
7053 # Settings for pkg-config files
7054
7055 cat > ffbuild/config.sh <<EOF
7056 # Automatically generated by configure - do not modify!
7057 shared=$shared
7058 build_suffix=$build_suffix
7059 prefix=$prefix
7060 libdir=$libdir
7061 incdir=$incdir
7062 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7063 source_path=${source_path}
7064 LIBPREF=${LIBPREF}
7065 LIBSUF=${LIBSUF}
7066
7067 extralibs_avutil="$LIBRT $LIBM"
7068 extralibs_avcodec="$extralibs"
7069 extralibs_avformat="$extralibs"
7070 extralibs_avdevice="$extralibs"
7071 extralibs_avfilter="$extralibs"
7072 extralibs_avresample="$LIBM"
7073 extralibs_postproc=""
7074 extralibs_swscale="$LIBM"
7075 extralibs_swresample="$LIBM $LIBSOXR"
7076 EOF
7077
7078 for lib in $LIBRARY_LIST; do
7079     lib_deps="$(eval echo \$${lib}_deps)"
7080     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7081 done