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   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-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-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 318   --enable-omx             enable OpenMAX IL code [no]
 319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 324
 325 Toolchain options:
 326   --arch=ARCH              select architecture [$arch]
 327   --cpu=CPU                select the minimum required CPU (affects
 328                            instruction selection, may crash on older CPUs)
 329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 330   --progs-suffix=SUFFIX    program name suffix []
 331   --enable-cross-compile   assume a cross-compiler is used
 332   --sysroot=PATH           root of cross-build tree
 333   --sysinclude=PATH        location of cross-build system headers
 334   --target-os=OS           compiler targets OS [$target_os]
 335   --target-exec=CMD        command to run executables on target
 336   --target-path=DIR        path to view of build directory on target
 337   --target-samples=DIR     path to samples directory on target
 338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 339   --toolchain=NAME         set tool defaults according to NAME
 340   --nm=NM                  use nm tool NM [$nm_default]
 341   --ar=AR                  use archive tool AR [$ar_default]
 342   --as=AS                  use assembler AS [$as_default]
 343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 344   --strip=STRIP            use strip tool STRIP [$strip_default]
 345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 347   --cc=CC                  use C compiler CC [$cc_default]
 348   --cxx=CXX                use C compiler CXX [$cxx_default]
 349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 352   --ld=LD                  use linker LD [$ld_default]
 353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 357   --host-cc=HOSTCC         use host C compiler HOSTCC
 358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 360   --host-ld=HOSTLD         use host linker HOSTLD
 361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 362   --host-libs=HLIBS        use libs HLIBS when linking for host
 363   --host-os=OS             compiler host OS [$target_os]
 364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 371   --extra-version=STRING   version string suffix []
 372   --optflags=OPTFLAGS      override optimization-related compiler flags
 373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 374   --build-suffix=SUFFIX    library name suffix []
 375   --enable-pic             build position-independent code
 376   --enable-thumb           compile for Thumb instruction set
 377   --enable-lto             use link-time optimization
 378   --env="ENV=override"     override the environment variables
 379
 380 Advanced options (experts only):
 381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 382   --custom-allocator=NAME  use a supported custom allocator
 383   --disable-symver         disable symbol versioning
 384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 385   --disable-safe-bitstream-reader
 386                            disable buffer boundary checking in bitreaders
 387                            (faster, but may crash)
 388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 389
 390 Optimization options (experts only):
 391   --disable-asm            disable all assembly optimizations
 392   --disable-altivec        disable AltiVec optimizations
 393   --disable-vsx            disable VSX optimizations
 394   --disable-power8         disable POWER8 optimizations
 395   --disable-amd3dnow       disable 3DNow! optimizations
 396   --disable-amd3dnowext    disable 3DNow! extended optimizations
 397   --disable-mmx            disable MMX optimizations
 398   --disable-mmxext         disable MMXEXT optimizations
 399   --disable-sse            disable SSE optimizations
 400   --disable-sse2           disable SSE2 optimizations
 401   --disable-sse3           disable SSE3 optimizations
 402   --disable-ssse3          disable SSSE3 optimizations
 403   --disable-sse4           disable SSE4 optimizations
 404   --disable-sse42          disable SSE4.2 optimizations
 405   --disable-avx            disable AVX optimizations
 406   --disable-xop            disable XOP optimizations
 407   --disable-fma3           disable FMA3 optimizations
 408   --disable-fma4           disable FMA4 optimizations
 409   --disable-avx2           disable AVX2 optimizations
 410   --disable-aesni          disable AESNI optimizations
 411   --disable-armv5te        disable armv5te optimizations
 412   --disable-armv6          disable armv6 optimizations
 413   --disable-armv6t2        disable armv6t2 optimizations
 414   --disable-vfp            disable VFP optimizations
 415   --disable-neon           disable NEON optimizations
 416   --disable-inline-asm     disable use of inline assembly
 417   --disable-x86asm         disable use of standalone x86 assembly
 418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 420   --disable-msa            disable MSA optimizations
 421   --disable-mipsfpu        disable floating point MIPS optimizations
 422   --disable-mmi            disable Loongson SIMD optimizations
 423   --disable-fast-unaligned consider unaligned accesses slow
 424
 425 Developer options (useful when working on FFmpeg itself):
 426   --disable-debug          disable debugging symbols
 427   --enable-debug=LEVEL     set the debug level [$debuglevel]
 428   --disable-optimizations  disable compiler optimizations
 429   --enable-extra-warnings  enable more compiler warnings
 430   --disable-stripping      disable stripping of executables and shared libraries
 431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 432                            2 causes a slowdown at runtime.
 433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 435                            leaks and errors, using the specified valgrind binary.
 436                            Cannot be combined with --target-exec
 437   --enable-ftrapv          Trap arithmetic overflows
 438   --samples=PATH           location of test samples for FATE, if not set use
 439                            \$FATE_SAMPLES at make invocation time.
 440   --enable-neon-clobber-test check NEON registers for clobbering (should be
 441                            used only for debugging purposes)
 442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 443                            should be used only for debugging purposes)
 444   --enable-random          randomly enable/disable components
 445   --disable-random
 446   --enable-random=LIST     randomly enable/disable specific components or
 447   --disable-random=LIST    component groups. LIST is a comma-separated list
 448                            of NAME[:PROB] entries where NAME is a component
 449                            (group) and PROB the probability associated with
 450                            NAME (default 0.5).
 451   --random-seed=VALUE      seed value for --enable/disable-random
 452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 453                            (only applies to --disable-optimizations builds)
 454   --enable-osfuzz          Enable building fuzzer tool
 455   --libfuzzer=PATH         path to libfuzzer
 456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 457                            in the name) of tests whose result is ignored
 458   --enable-linux-perf      enable Linux Performance Monitor API
 459
 460 NOTE: Object files are built at the place where configure is launched.
 461 EOF
 462   exit 0
 463 }
 464
 465 quotes='""'
 466 if test -t 1 && which tput >/dev/null 2>&1; then
 467     ncolors=$(tput colors)
 468     if test -n "$ncolors" && test $ncolors -ge 8; then
 469         bold_color=$(tput bold)
 470         warn_color=$(tput setaf 3)
 471         error_color=$(tput setaf 1)
 472         reset_color=$(tput sgr0)
 473     fi
 474     # 72 used instead of 80 since that's the default of pr
 475     ncols=$(tput cols)
 476 fi
 477 : ${ncols:=72}
 478
 479 log(){
 480     echo "$@" >> $logfile
 481 }
 482
 483 log_file(){
 484     log BEGIN $1
 485     pr -n -t $1 >> $logfile
 486     log END $1
 487 }
 488
 489 warn(){
 490     log "WARNING: $*"
 491     WARNINGS="${WARNINGS}WARNING: $*\n"
 492 }
 493
 494 die(){
 495     log "$@"
 496     echo "$error_color$bold_color$@$reset_color"
 497     cat <<EOF
 498
 499 If you think configure made a mistake, make sure you are using the latest
 500 version from Git.  If the latest version fails, report the problem to the
 501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 502 EOF
 503     if disabled logging; then
 504         cat <<EOF
 505 Rerun configure with logging enabled (do not use --disable-logging), and
 506 include the log this produces with your report.
 507 EOF
 508     else
 509         cat <<EOF
 510 Include the log file "$logfile" produced by configure as this will help
 511 solve the problem.
 512 EOF
 513     fi
 514     exit 1
 515 }
 516
 517 # Avoid locale weirdness, besides we really just want to translate ASCII.
 518 toupper(){
 519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 520 }
 521
 522 tolower(){
 523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 524 }
 525
 526 c_escape(){
 527     echo "$*" | sed 's/["\\]/\\\0/g'
 528 }
 529
 530 sh_quote(){
 531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 533     echo "$v"
 534 }
 535
 536 cleanws(){
 537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 538 }
 539
 540 filter(){
 541     pat=$1
 542     shift
 543     for v; do
 544         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 545     done
 546 }
 547
 548 filter_out(){
 549     pat=$1
 550     shift
 551     for v; do
 552         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 553     done
 554 }
 555
 556 map(){
 557     m=$1
 558     shift
 559     for v; do eval $m; done
 560 }
 561
 562 add_suffix(){
 563     suffix=$1
 564     shift
 565     for v; do echo ${v}${suffix}; done
 566 }
 567
 568 set_all(){
 569     value=$1
 570     shift
 571     for var in $*; do
 572         eval $var=$value
 573     done
 574 }
 575
 576 set_weak(){
 577     value=$1
 578     shift
 579     for var; do
 580         eval : \${$var:=$value}
 581     done
 582 }
 583
 584 sanitize_var_name(){
 585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 586 }
 587
 588 set_sanitized(){
 589     var=$1
 590     shift
 591     eval $(sanitize_var_name "$var")='$*'
 592 }
 593
 594 get_sanitized(){
 595     eval echo \$$(sanitize_var_name "$1")
 596 }
 597
 598 pushvar(){
 599     for pvar in $*; do
 600         eval level=\${${pvar}_level:=0}
 601         eval ${pvar}_${level}="\$$pvar"
 602         eval ${pvar}_level=$(($level+1))
 603     done
 604 }
 605
 606 popvar(){
 607     for pvar in $*; do
 608         eval level=\${${pvar}_level:-0}
 609         test $level = 0 && continue
 610         eval level=$(($level-1))
 611         eval $pvar="\${${pvar}_${level}}"
 612         eval ${pvar}_level=$level
 613         eval unset ${pvar}_${level}
 614     done
 615 }
 616
 617 request(){
 618     for var in $*; do
 619         eval ${var}_requested=yes
 620         eval $var=
 621     done
 622 }
 623
 624 enable(){
 625     set_all yes $*
 626 }
 627
 628 disable(){
 629     set_all no $*
 630 }
 631
 632 enable_weak(){
 633     set_weak yes $*
 634 }
 635
 636 disable_weak(){
 637     set_weak no $*
 638 }
 639
 640 enable_sanitized(){
 641     for var; do
 642         enable $(sanitize_var_name $var)
 643     done
 644 }
 645
 646 disable_sanitized(){
 647     for var; do
 648         disable $(sanitize_var_name $var)
 649     done
 650 }
 651
 652 do_enable_deep(){
 653     for var; do
 654         enabled $var && continue
 655         eval sel="\$${var}_select"
 656         eval sgs="\$${var}_suggest"
 657         pushvar var sgs
 658         enable_deep $sel
 659         popvar sgs
 660         enable_deep_weak $sgs
 661         popvar var
 662     done
 663 }
 664
 665 enable_deep(){
 666     do_enable_deep $*
 667     enable $*
 668 }
 669
 670 enable_deep_weak(){
 671     for var; do
 672         disabled $var && continue
 673         pushvar var
 674         do_enable_deep $var
 675         popvar var
 676         enable_weak $var
 677     done
 678 }
 679
 680 requested(){
 681     test "${1#!}" = "$1" && op="=" || op="!="
 682     eval test "x\$${1#!}_requested" $op "xyes"
 683 }
 684
 685 enabled(){
 686     test "${1#!}" = "$1" && op="=" || op="!="
 687     eval test "x\$${1#!}" $op "xyes"
 688 }
 689
 690 disabled(){
 691     test "${1#!}" = "$1" && op="=" || op="!="
 692     eval test "x\$${1#!}" $op "xno"
 693 }
 694
 695 enabled_all(){
 696     for opt; do
 697         enabled $opt || return 1
 698     done
 699 }
 700
 701 disabled_all(){
 702     for opt; do
 703         disabled $opt || return 1
 704     done
 705 }
 706
 707 enabled_any(){
 708     for opt; do
 709         enabled $opt && return 0
 710     done
 711 }
 712
 713 disabled_any(){
 714     for opt; do
 715         disabled $opt && return 0
 716     done
 717     return 1
 718 }
 719
 720 set_default(){
 721     for opt; do
 722         eval : \${$opt:=\$${opt}_default}
 723     done
 724 }
 725
 726 is_in(){
 727     value=$1
 728     shift
 729     for var in $*; do
 730         [ $var = $value ] && return 0
 731     done
 732     return 1
 733 }
 734
 735 check_deps(){
 736     for cfg; do
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740
 741         eval dep_all="\$${cfg}_deps"
 742         eval dep_any="\$${cfg}_deps_any"
 743         eval dep_con="\$${cfg}_conflict"
 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_con dep_sel dep_sgs dep_ifa dep_ifn
 750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 752
 753         [ -n "$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_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 759
 760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 761
 762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 763             # filter out library deps, these do not belong in extralibs
 764             is_in $dep $LIBRARY_LIST && continue
 765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 766         done
 767
 768         disable ${cfg}_checking
 769     done
 770 }
 771
 772 print_config(){
 773     pfx=$1
 774     files=$2
 775     shift 2
 776     map 'eval echo "$v \${$v:-no}"' "$@" |
 777     awk "BEGIN { split(\"$files\", files) }
 778         {
 779             c = \"$pfx\" toupper(\$1);
 780             v = \$2;
 781             sub(/yes/, 1, v);
 782             sub(/no/,  0, v);
 783             for (f in files) {
 784                 file = files[f];
 785                 if (file ~ /\\.h\$/) {
 786                     printf(\"#define %s %d\\n\", c, v) >>file;
 787                 } else if (file ~ /\\.asm\$/) {
 788                     printf(\"%%define %s %d\\n\", c, v) >>file;
 789                 } else if (file ~ /\\.mak\$/) {
 790                     n = -v ? \"\" : \"!\";
 791                     printf(\"%s%s=yes\\n\", n, c) >>file;
 792                 } else if (file ~ /\\.texi\$/) {
 793                     pre = -v ? \"\" : \"@c \";
 794                     yesno = \$2;
 795                     c2 = tolower(c);
 796                     gsub(/_/, \"-\", c2);
 797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 798                 }
 799             }
 800         }"
 801 }
 802
 803 print_enabled(){
 804     suf=$1
 805     shift
 806     for v; do
 807         enabled $v && printf "%s\n" ${v%$suf}
 808     done
 809 }
 810
 811 append(){
 812     var=$1
 813     shift
 814     eval "$var=\"\$$var $*\""
 815 }
 816
 817 prepend(){
 818     var=$1
 819     shift
 820     eval "$var=\"$* \$$var\""
 821 }
 822
 823 unique(){
 824     var=$1
 825     uniq_list=""
 826     for tok in $(eval echo \$$var); do
 827         uniq_list="$(filter_out $tok $uniq_list) $tok"
 828     done
 829     eval "$var=\"${uniq_list}\""
 830 }
 831
 832 resolve(){
 833     var=$1
 834     tmpvar=
 835     for entry in $(eval echo \$$var); do
 836         tmpvar="$tmpvar $(eval echo \$${entry})"
 837     done
 838     eval "$var=\"${tmpvar}\""
 839 }
 840
 841 add_cppflags(){
 842     append CPPFLAGS "$@"
 843 }
 844
 845 add_cflags(){
 846     append CFLAGS $($cflags_filter "$@")
 847 }
 848
 849 add_cflags_headers(){
 850     append CFLAGS_HEADERS $($cflags_filter "$@")
 851 }
 852
 853 add_cxxflags(){
 854     append CXXFLAGS $($cflags_filter "$@")
 855 }
 856
 857 add_asflags(){
 858     append ASFLAGS $($asflags_filter "$@")
 859 }
 860
 861 add_objcflags(){
 862     append OBJCFLAGS $($objcflags_filter "$@")
 863 }
 864
 865 add_ldflags(){
 866     append LDFLAGS $($ldflags_filter "$@")
 867 }
 868
 869 add_ldexeflags(){
 870     append LDEXEFLAGS $($ldflags_filter "$@")
 871 }
 872
 873 add_ldsoflags(){
 874     append LDSOFLAGS $($ldflags_filter "$@")
 875 }
 876
 877 add_stripflags(){
 878     append ASMSTRIPFLAGS "$@"
 879 }
 880
 881 add_extralibs(){
 882     prepend extralibs $($ldflags_filter "$@")
 883 }
 884
 885 add_host_cppflags(){
 886     append host_cppflags "$@"
 887 }
 888
 889 add_host_cflags(){
 890     append host_cflags $($host_cflags_filter "$@")
 891 }
 892
 893 add_host_ldflags(){
 894     append host_ldflags $($host_ldflags_filter "$@")
 895 }
 896
 897 add_compat(){
 898     append compat_objs $1
 899     shift
 900     map 'add_cppflags -D$v' "$@"
 901 }
 902
 903 check_cmd(){
 904     log "$@"
 905     "$@" >> $logfile 2>&1
 906 }
 907
 908 check_stat(){
 909     log check_stat "$@"
 910     stat "$1" >> $logfile 2>&1
 911 }
 912
 913 cc_o(){
 914     eval printf '%s\\n' $CC_O
 915 }
 916
 917 cc_e(){
 918     eval printf '%s\\n' $CC_E
 919 }
 920
 921 check_cc(){
 922     log check_cc "$@"
 923     cat > $TMPC
 924     log_file $TMPC
 925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 926 }
 927
 928 check_cxx(){
 929     log check_cxx "$@"
 930     cat > $TMPCPP
 931     log_file $TMPCPP
 932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 933 }
 934
 935 check_objcc(){
 936     log check_objcc "$@"
 937     cat > $TMPM
 938     log_file $TMPM
 939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 940 }
 941
 942 check_cpp(){
 943     log check_cpp "$@"
 944     cat > $TMPC
 945     log_file $TMPC
 946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 947 }
 948
 949 as_o(){
 950     eval printf '%s\\n' $AS_O
 951 }
 952
 953 check_as(){
 954     log check_as "$@"
 955     cat > $TMPS
 956     log_file $TMPS
 957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 958 }
 959
 960 check_inline_asm(){
 961     log check_inline_asm "$@"
 962     name="$1"
 963     code="$2"
 964     shift 2
 965     disable $name
 966     check_cc "$@" <<EOF && enable $name
 967 void foo(void){ __asm__ volatile($code); }
 968 EOF
 969 }
 970
 971 check_inline_asm_flags(){
 972     log check_inline_asm_flags "$@"
 973     name="$1"
 974     code="$2"
 975     flags=''
 976     shift 2
 977     while [ "$1" != "" ]; do
 978       append flags $1
 979       shift
 980     done;
 981     disable $name
 982     cat > $TMPC <<EOF
 983 void foo(void){ __asm__ volatile($code); }
 984 EOF
 985     log_file $TMPC
 986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 988 }
 989
 990 check_insn(){
 991     log check_insn "$@"
 992     check_inline_asm ${1}_inline "\"$2\""
 993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 994 }
 995
 996 check_x86asm(){
 997     log check_x86asm "$@"
 998     echo "$1" > $TMPS
 999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     set -- $($ldflags_filter "$@")
1085     check_ld "cc" "$@" <<EOF
1086 int main(void){ return 0; }
1087 EOF
1088 }
1089
1090 check_ldflags(){
1091     log check_ldflags "$@"
1092     test_ldflags "$@" && add_ldflags "$@"
1093 }
1094
1095 test_stripflags(){
1096     log test_stripflags "$@"
1097     # call check_cc to get a fresh TMPO
1098     check_cc <<EOF
1099 int main(void) { return 0; }
1100 EOF
1101     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1102 }
1103
1104 check_stripflags(){
1105     log check_stripflags "$@"
1106     test_stripflags "$@" && add_stripflags "$@"
1107 }
1108
1109 check_header(){
1110     log check_header "$@"
1111     headers=$1
1112     shift
1113     disable_sanitized $headers
1114     {
1115         for hdr in $headers; do
1116             print_include $hdr
1117         done
1118         echo "int x;"
1119     } | check_cpp "$@" && enable_sanitized $headers
1120 }
1121
1122 check_header_objcc(){
1123     log check_header_objcc "$@"
1124     rm -f -- "$TMPO"
1125     header=$1
1126     shift
1127     disable_sanitized $header
1128     {
1129        echo "#include <$header>"
1130        echo "int main(void) { return 0; }"
1131     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1132 }
1133
1134 check_apple_framework(){
1135     log check_apple_framework "$@"
1136     framework="$1"
1137     name="$(tolower $framework)"
1138     header="${framework}/${framework}.h"
1139     disable $name
1140     check_header_objcc $header &&
1141         enable $name && eval ${name}_extralibs='"-framework $framework"'
1142 }
1143
1144 check_func(){
1145     log check_func "$@"
1146     func=$1
1147     shift
1148     disable $func
1149     check_ld "cc" "$@" <<EOF && enable $func
1150 extern int $func();
1151 int main(void){ $func(); }
1152 EOF
1153 }
1154
1155 check_complexfunc(){
1156     log check_complexfunc "$@"
1157     func=$1
1158     narg=$2
1159     shift 2
1160     test $narg = 2 && args="f, g" || args="f * I"
1161     disable $func
1162     check_ld "cc" "$@" <<EOF && enable $func
1163 #include <complex.h>
1164 #include <math.h>
1165 float foo(complex float f, complex float g) { return $func($args); }
1166 int main(void){ return (int) foo; }
1167 EOF
1168 }
1169
1170 check_mathfunc(){
1171     log check_mathfunc "$@"
1172     func=$1
1173     narg=$2
1174     shift 2
1175     test $narg = 2 && args="f, g" || args="f"
1176     disable $func
1177     check_ld "cc" "$@" <<EOF && enable $func
1178 #include <math.h>
1179 float foo(float f, float g) { return $func($args); }
1180 int main(void){ return (int) foo; }
1181 EOF
1182 }
1183
1184 check_func_headers(){
1185     log check_func_headers "$@"
1186     headers=$1
1187     funcs=$2
1188     shift 2
1189     {
1190         for hdr in $headers; do
1191             print_include $hdr
1192         done
1193         echo "#include <stdint.h>"
1194         for func in $funcs; do
1195             echo "long check_$func(void) { return (long) $func; }"
1196         done
1197         echo "int main(void) { int ret = 0;"
1198         # LTO could optimize out the test functions without this
1199         for func in $funcs; do
1200             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1201         done
1202         echo "return ret; }"
1203     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1204 }
1205
1206 check_class_headers_cpp(){
1207     log check_class_headers_cpp "$@"
1208     headers=$1
1209     classes=$2
1210     shift 2
1211     {
1212         for hdr in $headers; do
1213             echo "#include <$hdr>"
1214         done
1215         echo "int main(void) { "
1216         i=1
1217         for class in $classes; do
1218             echo "$class obj$i;"
1219             i=$(expr $i + 1)
1220         done
1221         echo "return 0; }"
1222     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1223 }
1224
1225 check_cpp_condition(){
1226     log check_cpp_condition "$@"
1227     header=$1
1228     condition=$2
1229     shift 2
1230     check_cpp "$@" <<EOF
1231 #include <$header>
1232 #if !($condition)
1233 #error "unsatisfied condition: $condition"
1234 #endif
1235 EOF
1236 }
1237
1238 test_cflags_cc(){
1239     log test_cflags_cc "$@"
1240     flags=$1
1241     header=$2
1242     condition=$3
1243     shift 3
1244     set -- $($cflags_filter "$flags")
1245     check_cc "$@" <<EOF
1246 #include <$header>
1247 #if !($condition)
1248 #error "unsatisfied condition: $condition"
1249 #endif
1250 EOF
1251 }
1252
1253 check_lib(){
1254     log check_lib "$@"
1255     name="$1"
1256     headers="$2"
1257     funcs="$3"
1258     shift 3
1259     disable $name
1260     check_func_headers "$headers" "$funcs" "$@" &&
1261         enable $name && eval ${name}_extralibs="\$@"
1262 }
1263
1264 check_lib_cpp(){
1265     log check_lib_cpp "$@"
1266     name="$1"
1267     headers="$2"
1268     classes="$3"
1269     shift 3
1270     disable $name
1271     check_class_headers_cpp "$headers" "$classes" "$@" &&
1272         enable $name && eval ${name}_extralibs="\$@"
1273 }
1274
1275 test_pkg_config(){
1276     log test_pkg_config "$@"
1277     name="$1"
1278     pkg_version="$2"
1279     pkg="${2%% *}"
1280     headers="$3"
1281     funcs="$4"
1282     shift 4
1283     disable $name
1284     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1285     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1286     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1287     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1288         enable $name &&
1289         set_sanitized "${name}_cflags"    $pkg_cflags &&
1290         set_sanitized "${name}_extralibs" $pkg_libs
1291 }
1292
1293 check_pkg_config(){
1294     log check_pkg_config "$@"
1295     name="$1"
1296     test_pkg_config "$@" &&
1297         eval add_cflags \$${name}_cflags
1298 }
1299
1300 check_exec(){
1301     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1302 }
1303
1304 check_exec_crash(){
1305     log check_exec_crash "$@"
1306     code=$(cat)
1307
1308     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1309     # are safe but may not be available everywhere.  Thus we use
1310     # raise(SIGTERM) instead.  The check is run in a subshell so we
1311     # can redirect the "Terminated" message from the shell.  SIGBUS
1312     # is not defined by standard C so it is used conditionally.
1313
1314     (check_exec "$@") >> $logfile 2>&1 <<EOF
1315 #include <signal.h>
1316 static void sighandler(int sig){
1317     raise(SIGTERM);
1318 }
1319 int foo(void){
1320     $code
1321 }
1322 int (*func_ptr)(void) = foo;
1323 int main(void){
1324     signal(SIGILL, sighandler);
1325     signal(SIGFPE, sighandler);
1326     signal(SIGSEGV, sighandler);
1327 #ifdef SIGBUS
1328     signal(SIGBUS, sighandler);
1329 #endif
1330     return func_ptr();
1331 }
1332 EOF
1333 }
1334
1335 check_type(){
1336     log check_type "$@"
1337     headers=$1
1338     type=$2
1339     shift 2
1340     disable_sanitized "$type"
1341     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1342 }
1343
1344 check_struct(){
1345     log check_struct "$@"
1346     headers=$1
1347     struct=$2
1348     member=$3
1349     shift 3
1350     disable_sanitized "${struct}_${member}"
1351     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1352         enable_sanitized "${struct}_${member}"
1353 }
1354
1355 check_builtin(){
1356     log check_builtin "$@"
1357     name=$1
1358     headers=$2
1359     builtin=$3
1360     shift 3
1361     disable "$name"
1362     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1363 }
1364
1365 check_compile_assert(){
1366     log check_compile_assert "$@"
1367     name=$1
1368     headers=$2
1369     condition=$3
1370     shift 3
1371     disable "$name"
1372     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1373 }
1374
1375 require(){
1376     log require "$@"
1377     name_version="$1"
1378     name="${1%% *}"
1379     headers="$2"
1380     func="$3"
1381     shift 3
1382     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1383 }
1384
1385 require_cpp(){
1386     name="$1"
1387     headers="$2"
1388     classes="$3"
1389     shift 3
1390     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1391 }
1392
1393 require_header(){
1394     log require_header "$@"
1395     headers="$1"
1396     shift
1397     check_header "$headers" "$@" || die "ERROR: $headers not found"
1398 }
1399
1400 require_cpp_condition(){
1401     log require_cpp_condition "$@"
1402     header="$1"
1403     condition="$2"
1404     shift 2
1405     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1406 }
1407
1408 require_pkg_config(){
1409     log require_pkg_config "$@"
1410     pkg_version="$2"
1411     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1412 }
1413
1414 hostcc_e(){
1415     eval printf '%s\\n' $HOSTCC_E
1416 }
1417
1418 hostcc_o(){
1419     eval printf '%s\\n' $HOSTCC_O
1420 }
1421
1422 check_host_cc(){
1423     log check_host_cc "$@"
1424     cat > $TMPC
1425     log_file $TMPC
1426     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1427 }
1428
1429 check_host_cpp(){
1430     log check_host_cpp "$@"
1431     cat > $TMPC
1432     log_file $TMPC
1433     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1434 }
1435
1436 check_host_cppflags(){
1437     log check_host_cppflags "$@"
1438     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1439 #include <stdlib.h>
1440 EOF
1441 }
1442
1443 check_host_cflags(){
1444     log check_host_cflags "$@"
1445     set -- $($host_cflags_filter "$@")
1446     check_host_cc "$@" <<EOF && append host_cflags "$@"
1447 int x;
1448 EOF
1449 }
1450
1451 check_host_cpp_condition(){
1452     log check_host_cpp_condition "$@"
1453     header=$1
1454     condition=$2
1455     shift 2
1456     check_host_cpp "$@" <<EOF
1457 #include <$header>
1458 #if !($condition)
1459 #error "unsatisfied condition: $condition"
1460 #endif
1461 EOF
1462 }
1463
1464 cp_if_changed(){
1465     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1466     mkdir -p "$(dirname $2)"
1467     cp -f "$1" "$2"
1468 }
1469
1470 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1471 # system-dependent things.
1472
1473 AVCODEC_COMPONENTS="
1474     bsfs
1475     decoders
1476     encoders
1477     hwaccels
1478     parsers
1479 "
1480
1481 AVDEVICE_COMPONENTS="
1482     indevs
1483     outdevs
1484 "
1485
1486 AVFILTER_COMPONENTS="
1487     filters
1488 "
1489
1490 AVFORMAT_COMPONENTS="
1491     demuxers
1492     muxers
1493     protocols
1494 "
1495
1496 COMPONENT_LIST="
1497     $AVCODEC_COMPONENTS
1498     $AVDEVICE_COMPONENTS
1499     $AVFILTER_COMPONENTS
1500     $AVFORMAT_COMPONENTS
1501 "
1502
1503 EXAMPLE_LIST="
1504     avio_dir_cmd_example
1505     avio_reading_example
1506     decode_audio_example
1507     decode_video_example
1508     demuxing_decoding_example
1509     encode_audio_example
1510     encode_video_example
1511     extract_mvs_example
1512     filter_audio_example
1513     filtering_audio_example
1514     filtering_video_example
1515     http_multiclient_example
1516     hw_decode_example
1517     metadata_example
1518     muxing_example
1519     qsvdec_example
1520     remuxing_example
1521     resampling_audio_example
1522     scaling_video_example
1523     transcode_aac_example
1524     transcoding_example
1525 "
1526
1527 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1528     alsa
1529     appkit
1530     avfoundation
1531     bzlib
1532     coreimage
1533     iconv
1534     libxcb
1535     libxcb_shm
1536     libxcb_shape
1537     libxcb_xfixes
1538     lzma
1539     schannel
1540     sdl2
1541     securetransport
1542     sndio
1543     xlib
1544     zlib
1545 "
1546
1547 EXTERNAL_LIBRARY_GPL_LIST="
1548     avisynth
1549     frei0r
1550     libcdio
1551     librubberband
1552     libvidstab
1553     libx264
1554     libx265
1555     libxavs
1556     libxvid
1557 "
1558
1559 EXTERNAL_LIBRARY_NONFREE_LIST="
1560     decklink
1561     libndi_newtek
1562     libfdk_aac
1563     openssl
1564 "
1565
1566 EXTERNAL_LIBRARY_VERSION3_LIST="
1567     gmp
1568     libopencore_amrnb
1569     libopencore_amrwb
1570     libvmaf
1571     libvo_amrwbenc
1572     rkmpp
1573 "
1574
1575 EXTERNAL_LIBRARY_GPLV3_LIST="
1576     libsmbclient
1577 "
1578
1579 EXTERNAL_LIBRARY_LIST="
1580     $EXTERNAL_LIBRARY_GPL_LIST
1581     $EXTERNAL_LIBRARY_NONFREE_LIST
1582     $EXTERNAL_LIBRARY_VERSION3_LIST
1583     $EXTERNAL_LIBRARY_GPLV3_LIST
1584     chromaprint
1585     gcrypt
1586     gnutls
1587     jni
1588     ladspa
1589     libass
1590     libbluray
1591     libbs2b
1592     libcaca
1593     libcelt
1594     libdc1394
1595     libdrm
1596     libflite
1597     libfontconfig
1598     libfreetype
1599     libfribidi
1600     libgme
1601     libgsm
1602     libiec61883
1603     libilbc
1604     libjack
1605     libkvazaar
1606     libmodplug
1607     libmp3lame
1608     libmysofa
1609     libopencv
1610     libopenh264
1611     libopenjpeg
1612     libopenmpt
1613     libopus
1614     libpulse
1615     librsvg
1616     librtmp
1617     libshine
1618     libsmbclient
1619     libsnappy
1620     libsoxr
1621     libspeex
1622     libssh
1623     libtesseract
1624     libtheora
1625     libtwolame
1626     libv4l2
1627     libvorbis
1628     libvpx
1629     libwavpack
1630     libwebp
1631     libxml2
1632     libzimg
1633     libzmq
1634     libzvbi
1635     mediacodec
1636     openal
1637     opencl
1638     opengl
1639 "
1640
1641 HWACCEL_AUTODETECT_LIBRARY_LIST="
1642     audiotoolbox
1643     crystalhd
1644     cuda
1645     cuvid
1646     d3d11va
1647     dxva2
1648     nvdec
1649     nvenc
1650     vaapi
1651     vdpau
1652     videotoolbox
1653     v4l2_m2m
1654     xvmc
1655 "
1656
1657 # catchall list of things that require external libs to link
1658 EXTRALIBS_LIST="
1659     cpu_init
1660     cws2fws
1661 "
1662
1663 HWACCEL_LIBRARY_NONFREE_LIST="
1664     cuda_sdk
1665     libnpp
1666 "
1667
1668 HWACCEL_LIBRARY_LIST="
1669     $HWACCEL_LIBRARY_NONFREE_LIST
1670     libmfx
1671     mmal
1672     omx
1673 "
1674
1675 DOCUMENT_LIST="
1676     doc
1677     htmlpages
1678     manpages
1679     podpages
1680     txtpages
1681 "
1682
1683 FEATURE_LIST="
1684     ftrapv
1685     gray
1686     hardcoded_tables
1687     omx_rpi
1688     runtime_cpudetect
1689     safe_bitstream_reader
1690     shared
1691     small
1692     static
1693     swscale_alpha
1694 "
1695
1696 LIBRARY_LIST="
1697     avcodec
1698     avdevice
1699     avfilter
1700     avformat
1701     avresample
1702     avutil
1703     postproc
1704     swresample
1705     swscale
1706 "
1707
1708 LICENSE_LIST="
1709     gpl
1710     nonfree
1711     version3
1712 "
1713
1714 PROGRAM_LIST="
1715     ffplay
1716     ffprobe
1717     ffserver
1718     ffmpeg
1719 "
1720
1721 SUBSYSTEM_LIST="
1722     dct
1723     dwt
1724     error_resilience
1725     faan
1726     fast_unaligned
1727     fft
1728     lsp
1729     lzo
1730     mdct
1731     pixelutils
1732     network
1733     rdft
1734 "
1735
1736 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1737 CONFIG_LIST="
1738     $DOCUMENT_LIST
1739     $EXAMPLE_LIST
1740     $EXTERNAL_LIBRARY_LIST
1741     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1742     $HWACCEL_LIBRARY_LIST
1743     $HWACCEL_AUTODETECT_LIBRARY_LIST
1744     $FEATURE_LIST
1745     $LICENSE_LIST
1746     $LIBRARY_LIST
1747     $PROGRAM_LIST
1748     $SUBSYSTEM_LIST
1749     autodetect
1750     fontconfig
1751     linux_perf
1752     memory_poisoning
1753     neon_clobber_test
1754     ossfuzz
1755     pic
1756     thumb
1757     valgrind_backtrace
1758     xmm_clobber_test
1759     $COMPONENT_LIST
1760 "
1761
1762 THREADS_LIST="
1763     pthreads
1764     os2threads
1765     w32threads
1766 "
1767
1768 ATOMICS_LIST="
1769     atomics_gcc
1770     atomics_suncc
1771     atomics_win32
1772 "
1773
1774 AUTODETECT_LIBS="
1775     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1776     $HWACCEL_AUTODETECT_LIBRARY_LIST
1777     $THREADS_LIST
1778 "
1779
1780 ARCH_LIST="
1781     aarch64
1782     alpha
1783     arm
1784     avr32
1785     avr32_ap
1786     avr32_uc
1787     bfin
1788     ia64
1789     m68k
1790     mips
1791     mips64
1792     parisc
1793     ppc
1794     ppc64
1795     s390
1796     sh4
1797     sparc
1798     sparc64
1799     tilegx
1800     tilepro
1801     tomi
1802     x86
1803     x86_32
1804     x86_64
1805 "
1806
1807 ARCH_EXT_LIST_ARM="
1808     armv5te
1809     armv6
1810     armv6t2
1811     armv8
1812     neon
1813     vfp
1814     vfpv3
1815     setend
1816 "
1817
1818 ARCH_EXT_LIST_MIPS="
1819     mipsfpu
1820     mips32r2
1821     mips32r5
1822     mips64r2
1823     mips32r6
1824     mips64r6
1825     mipsdsp
1826     mipsdspr2
1827     msa
1828 "
1829
1830 ARCH_EXT_LIST_LOONGSON="
1831     loongson2
1832     loongson3
1833     mmi
1834 "
1835
1836 ARCH_EXT_LIST_X86_SIMD="
1837     aesni
1838     amd3dnow
1839     amd3dnowext
1840     avx
1841     avx2
1842     fma3
1843     fma4
1844     mmx
1845     mmxext
1846     sse
1847     sse2
1848     sse3
1849     sse4
1850     sse42
1851     ssse3
1852     xop
1853 "
1854
1855 ARCH_EXT_LIST_PPC="
1856     altivec
1857     dcbzl
1858     ldbrx
1859     power8
1860     ppc4xx
1861     vsx
1862 "
1863
1864 ARCH_EXT_LIST_X86="
1865     $ARCH_EXT_LIST_X86_SIMD
1866     cpunop
1867     i686
1868 "
1869
1870 ARCH_EXT_LIST="
1871     $ARCH_EXT_LIST_ARM
1872     $ARCH_EXT_LIST_PPC
1873     $ARCH_EXT_LIST_X86
1874     $ARCH_EXT_LIST_MIPS
1875     $ARCH_EXT_LIST_LOONGSON
1876 "
1877
1878 ARCH_FEATURES="
1879     aligned_stack
1880     fast_64bit
1881     fast_clz
1882     fast_cmov
1883     local_aligned
1884     simd_align_16
1885     simd_align_32
1886 "
1887
1888 BUILTIN_LIST="
1889     atomic_cas_ptr
1890     machine_rw_barrier
1891     MemoryBarrier
1892     mm_empty
1893     rdtsc
1894     sarestart
1895     sem_timedwait
1896     sync_val_compare_and_swap
1897 "
1898 HAVE_LIST_CMDLINE="
1899     inline_asm
1900     symver
1901     x86asm
1902 "
1903
1904 HAVE_LIST_PUB="
1905     bigendian
1906     fast_unaligned
1907 "
1908
1909 HEADERS_LIST="
1910     arpa_inet_h
1911     asm_types_h
1912     cdio_paranoia_h
1913     cdio_paranoia_paranoia_h
1914     cuda_h
1915     dispatch_dispatch_h
1916     dev_bktr_ioctl_bt848_h
1917     dev_bktr_ioctl_meteor_h
1918     dev_ic_bt8xx_h
1919     dev_video_bktr_ioctl_bt848_h
1920     dev_video_meteor_ioctl_meteor_h
1921     direct_h
1922     dirent_h
1923     dxgidebug_h
1924     dxva_h
1925     ES2_gl_h
1926     gsm_h
1927     io_h
1928     machine_ioctl_bt848_h
1929     machine_ioctl_meteor_h
1930     malloc_h
1931     opencv2_core_core_c_h
1932     OpenGL_gl3_h
1933     poll_h
1934     sys_param_h
1935     sys_resource_h
1936     sys_select_h
1937     sys_soundcard_h
1938     sys_time_h
1939     sys_un_h
1940     sys_videoio_h
1941     termios_h
1942     udplite_h
1943     unistd_h
1944     valgrind_valgrind_h
1945     windows_h
1946     winsock2_h
1947 "
1948
1949 INTRINSICS_LIST="
1950     intrinsics_neon
1951 "
1952
1953 COMPLEX_FUNCS="
1954     cabs
1955     cexp
1956 "
1957
1958 MATH_FUNCS="
1959     atanf
1960     atan2f
1961     cbrt
1962     cbrtf
1963     copysign
1964     cosf
1965     erf
1966     exp2
1967     exp2f
1968     expf
1969     hypot
1970     isfinite
1971     isinf
1972     isnan
1973     ldexpf
1974     llrint
1975     llrintf
1976     log2
1977     log2f
1978     log10f
1979     lrint
1980     lrintf
1981     powf
1982     rint
1983     round
1984     roundf
1985     sinf
1986     trunc
1987     truncf
1988 "
1989
1990 SYSTEM_FEATURES="
1991     atomics_native
1992     dos_paths
1993     libc_msvcrt
1994     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1995     section_data_rel_ro
1996     threads
1997     uwp
1998     winrt
1999 "
2000
2001 SYSTEM_FUNCS="
2002     access
2003     aligned_malloc
2004     arc4random
2005     clock_gettime
2006     closesocket
2007     CommandLineToArgvW
2008     fcntl
2009     getaddrinfo
2010     gethrtime
2011     getopt
2012     GetProcessAffinityMask
2013     GetProcessMemoryInfo
2014     GetProcessTimes
2015     getrusage
2016     GetSystemTimeAsFileTime
2017     gettimeofday
2018     glob
2019     glXGetProcAddress
2020     gmtime_r
2021     inet_aton
2022     isatty
2023     kbhit
2024     localtime_r
2025     lstat
2026     lzo1x_999_compress
2027     mach_absolute_time
2028     MapViewOfFile
2029     memalign
2030     mkstemp
2031     mmap
2032     mprotect
2033     nanosleep
2034     PeekNamedPipe
2035     posix_memalign
2036     pthread_cancel
2037     sched_getaffinity
2038     SecItemImport
2039     SetConsoleTextAttribute
2040     SetConsoleCtrlHandler
2041     setmode
2042     setrlimit
2043     Sleep
2044     strerror_r
2045     sysconf
2046     sysctl
2047     usleep
2048     UTGetOSTypeFromString
2049     VirtualAlloc
2050     wglGetProcAddress
2051 "
2052
2053 SYSTEM_LIBRARIES="
2054     vaapi_drm
2055     vaapi_x11
2056     vdpau_x11
2057     wincrypt
2058 "
2059
2060 TOOLCHAIN_FEATURES="
2061     as_arch_directive
2062     as_fpu_directive
2063     as_func
2064     as_object_arch
2065     asm_mod_q
2066     blocks_extension
2067     ebp_available
2068     ebx_available
2069     gnu_as
2070     gnu_windres
2071     ibm_asm
2072     inline_asm_direct_symbol_refs
2073     inline_asm_labels
2074     inline_asm_nonlocal_labels
2075     pragma_deprecated
2076     rsync_contimeout
2077     symver_asm_label
2078     symver_gnu_asm
2079     vfp_args
2080     xform_asm
2081     xmm_clobbers
2082 "
2083
2084 TYPES_LIST="
2085     CONDITION_VARIABLE_Ptr
2086     kCMVideoCodecType_HEVC
2087     socklen_t
2088     struct_addrinfo
2089     struct_group_source_req
2090     struct_ip_mreq_source
2091     struct_ipv6_mreq
2092     struct_msghdr_msg_flags
2093     struct_pollfd
2094     struct_rusage_ru_maxrss
2095     struct_sctp_event_subscribe
2096     struct_sockaddr_in6
2097     struct_sockaddr_sa_len
2098     struct_sockaddr_storage
2099     struct_stat_st_mtim_tv_nsec
2100     struct_v4l2_frmivalenum_discrete
2101 "
2102
2103 HAVE_LIST="
2104     $ARCH_EXT_LIST
2105     $(add_suffix _external $ARCH_EXT_LIST)
2106     $(add_suffix _inline   $ARCH_EXT_LIST)
2107     $ARCH_FEATURES
2108     $ATOMICS_LIST
2109     $BUILTIN_LIST
2110     $COMPLEX_FUNCS
2111     $HAVE_LIST_CMDLINE
2112     $HAVE_LIST_PUB
2113     $HEADERS_LIST
2114     $INTRINSICS_LIST
2115     $MATH_FUNCS
2116     $SYSTEM_FEATURES
2117     $SYSTEM_FUNCS
2118     $SYSTEM_LIBRARIES
2119     $THREADS_LIST
2120     $TOOLCHAIN_FEATURES
2121     $TYPES_LIST
2122     makeinfo
2123     makeinfo_html
2124     perl
2125     pod2man
2126     texi2html
2127 "
2128
2129 # options emitted with CONFIG_ prefix but not available on the command line
2130 CONFIG_EXTRA="
2131     aandcttables
2132     ac3dsp
2133     adts_header
2134     audio_frame_queue
2135     audiodsp
2136     blockdsp
2137     bswapdsp
2138     cabac
2139     cbs
2140     cbs_h264
2141     cbs_h265
2142     cbs_mpeg2
2143     dirac_parse
2144     dvprofile
2145     exif
2146     faandct
2147     faanidct
2148     fdctdsp
2149     flacdsp
2150     fmtconvert
2151     frame_thread_encoder
2152     g722dsp
2153     golomb
2154     gplv3
2155     h263dsp
2156     h264chroma
2157     h264dsp
2158     h264parse
2159     h264pred
2160     h264qpel
2161     hevcparse
2162     hpeldsp
2163     huffman
2164     huffyuvdsp
2165     huffyuvencdsp
2166     idctdsp
2167     iirfilter
2168     mdct15
2169     intrax8
2170     iso_media
2171     ividsp
2172     jpegtables
2173     lgplv3
2174     libx262
2175     llauddsp
2176     llviddsp
2177     llvidencdsp
2178     lpc
2179     lzf
2180     me_cmp
2181     mpeg_er
2182     mpegaudio
2183     mpegaudiodsp
2184     mpegaudioheader
2185     mpegvideo
2186     mpegvideoenc
2187     mss34dsp
2188     pixblockdsp
2189     qpeldsp
2190     qsv
2191     qsvdec
2192     qsvenc
2193     qsvvpp
2194     rangecoder
2195     riffdec
2196     riffenc
2197     rtpdec
2198     rtpenc_chain
2199     rv34dsp
2200     sinewin
2201     snappy
2202     srtp
2203     startcode
2204     texturedsp
2205     texturedspenc
2206     tpeldsp
2207     vaapi_1
2208     vaapi_encode
2209     vc1dsp
2210     videodsp
2211     vp3dsp
2212     vp56dsp
2213     vp8dsp
2214     wma_freqs
2215     wmv2dsp
2216 "
2217
2218 CMDLINE_SELECT="
2219     $ARCH_EXT_LIST
2220     $CONFIG_LIST
2221     $HAVE_LIST_CMDLINE
2222     $THREADS_LIST
2223     asm
2224     cross_compile
2225     debug
2226     extra_warnings
2227     logging
2228     lto
2229     optimizations
2230     rpath
2231     stripping
2232 "
2233
2234 PATHS_LIST="
2235     bindir
2236     datadir
2237     docdir
2238     incdir
2239     libdir
2240     mandir
2241     pkgconfigdir
2242     prefix
2243     shlibdir
2244     install_name_dir
2245 "
2246
2247 CMDLINE_SET="
2248     $PATHS_LIST
2249     ar
2250     arch
2251     as
2252     assert_level
2253     build_suffix
2254     cc
2255     objcc
2256     cpu
2257     cross_prefix
2258     custom_allocator
2259     cxx
2260     dep_cc
2261     doxygen
2262     env
2263     extra_version
2264     gas
2265     host_cc
2266     host_cflags
2267     host_extralibs
2268     host_ld
2269     host_ldflags
2270     host_os
2271     ignore_tests
2272     install
2273     ld
2274     ln_s
2275     logfile
2276     malloc_prefix
2277     nm
2278     optflags
2279     nvccflags
2280     pkg_config
2281     pkg_config_flags
2282     progs_suffix
2283     random_seed
2284     ranlib
2285     samples
2286     strip
2287     sws_max_filter_size
2288     sysinclude
2289     sysroot
2290     target_exec
2291     target_os
2292     target_path
2293     target_samples
2294     tempprefix
2295     toolchain
2296     valgrind
2297     x86asmexe
2298 "
2299
2300 CMDLINE_APPEND="
2301     extra_cflags
2302     extra_cxxflags
2303     extra_objcflags
2304     host_cppflags
2305 "
2306
2307 # code dependency declarations
2308
2309 # architecture extensions
2310
2311 armv5te_deps="arm"
2312 armv6_deps="arm"
2313 armv6t2_deps="arm"
2314 armv8_deps="aarch64"
2315 neon_deps_any="aarch64 arm"
2316 intrinsics_neon_deps="neon"
2317 vfp_deps_any="aarch64 arm"
2318 vfpv3_deps="vfp"
2319 setend_deps="arm"
2320
2321 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2322
2323 altivec_deps="ppc"
2324 dcbzl_deps="ppc"
2325 ldbrx_deps="ppc"
2326 ppc4xx_deps="ppc"
2327 vsx_deps="altivec"
2328 power8_deps="vsx"
2329
2330 loongson2_deps="mips"
2331 loongson3_deps="mips"
2332 mips32r2_deps="mips"
2333 mips32r5_deps="mips"
2334 mips32r6_deps="mips"
2335 mips64r2_deps="mips"
2336 mips64r6_deps="mips"
2337 mipsfpu_deps="mips"
2338 mipsdsp_deps="mips"
2339 mipsdspr2_deps="mips"
2340 mmi_deps="mips"
2341 msa_deps="mipsfpu"
2342
2343 cpunop_deps="i686"
2344 x86_64_select="i686"
2345 x86_64_suggest="fast_cmov"
2346
2347 amd3dnow_deps="mmx"
2348 amd3dnowext_deps="amd3dnow"
2349 i686_deps="x86"
2350 mmx_deps="x86"
2351 mmxext_deps="mmx"
2352 sse_deps="mmxext"
2353 sse2_deps="sse"
2354 sse3_deps="sse2"
2355 ssse3_deps="sse3"
2356 sse4_deps="ssse3"
2357 sse42_deps="sse4"
2358 aesni_deps="sse42"
2359 avx_deps="sse42"
2360 xop_deps="avx"
2361 fma3_deps="avx"
2362 fma4_deps="avx"
2363 avx2_deps="avx"
2364
2365 mmx_external_deps="x86asm"
2366 mmx_inline_deps="inline_asm x86"
2367 mmx_suggest="mmx_external mmx_inline"
2368
2369 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2370     eval dep=\$${ext}_deps
2371     eval ${ext}_external_deps='"${dep}_external"'
2372     eval ${ext}_inline_deps='"${dep}_inline"'
2373     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2374 done
2375
2376 aligned_stack_if_any="aarch64 ppc x86"
2377 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2378 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2379 fast_unaligned_if_any="aarch64 ppc x86"
2380 simd_align_16_if_any="altivec neon sse"
2381 simd_align_32_if_any="avx"
2382
2383 # system capabilities
2384 symver_if_any="symver_asm_label symver_gnu_asm"
2385 valgrind_backtrace_conflict="optimizations"
2386 valgrind_backtrace_deps="valgrind_valgrind_h"
2387
2388 # threading support
2389 atomics_gcc_if="sync_val_compare_and_swap"
2390 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2391 atomics_win32_if="MemoryBarrier"
2392 atomics_native_if_any="$ATOMICS_LIST"
2393 w32threads_deps="atomics_native"
2394 threads_if_any="$THREADS_LIST"
2395
2396 # subsystems
2397 cbs_h264_select="cbs golomb"
2398 cbs_h265_select="cbs golomb"
2399 cbs_mpeg2_select="cbs"
2400 dct_select="rdft"
2401 dirac_parse_select="golomb"
2402 error_resilience_select="me_cmp"
2403 faandct_deps="faan"
2404 faandct_select="fdctdsp"
2405 faanidct_deps="faan"
2406 faanidct_select="idctdsp"
2407 h264dsp_select="startcode"
2408 hevcparse_select="golomb"
2409 frame_thread_encoder_deps="encoders threads"
2410 intrax8_select="blockdsp idctdsp"
2411 mdct_select="fft"
2412 mdct15_select="fft"
2413 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2414 mpeg_er_select="error_resilience"
2415 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2416 mpegaudiodsp_select="dct"
2417 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2418 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2419 vc1dsp_select="h264chroma qpeldsp startcode"
2420 rdft_select="fft"
2421
2422 # decoders / encoders
2423 aac_decoder_select="adts_header mdct15 mdct sinewin"
2424 aac_fixed_decoder_select="mdct sinewin"
2425 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2426 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2427 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2428 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2429 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2430 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2431 adpcm_g722_decoder_select="g722dsp"
2432 adpcm_g722_encoder_select="g722dsp"
2433 aic_decoder_select="golomb idctdsp"
2434 alac_encoder_select="lpc"
2435 als_decoder_select="bswapdsp"
2436 amrnb_decoder_select="lsp"
2437 amrwb_decoder_select="lsp"
2438 amv_decoder_select="sp5x_decoder exif"
2439 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2440 ape_decoder_select="bswapdsp llauddsp"
2441 apng_decoder_select="zlib"
2442 apng_encoder_select="llvidencdsp zlib"
2443 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2444 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2445 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2446 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2447 atrac1_decoder_select="mdct sinewin"
2448 atrac3_decoder_select="mdct"
2449 atrac3p_decoder_select="mdct sinewin"
2450 avrn_decoder_select="exif jpegtables"
2451 bink_decoder_select="blockdsp hpeldsp"
2452 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2453 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2454 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2455 clearvideo_decoder_select="idctdsp"
2456 cllc_decoder_select="bswapdsp"
2457 comfortnoise_encoder_select="lpc"
2458 cook_decoder_select="audiodsp mdct sinewin"
2459 cscd_decoder_select="lzo"
2460 cscd_decoder_suggest="zlib"
2461 dca_decoder_select="mdct"
2462 dds_decoder_select="texturedsp"
2463 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2464 dnxhd_decoder_select="blockdsp idctdsp"
2465 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2466 dolby_e_decoder_select="mdct"
2467 dvvideo_decoder_select="dvprofile idctdsp"
2468 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2469 dxa_decoder_select="zlib"
2470 dxv_decoder_select="lzf texturedsp"
2471 eac3_decoder_select="ac3_decoder"
2472 eac3_encoder_select="ac3_encoder"
2473 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2474 eatgq_decoder_select="aandcttables"
2475 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2476 exr_decoder_select="zlib"
2477 ffv1_decoder_select="rangecoder"
2478 ffv1_encoder_select="rangecoder"
2479 ffvhuff_decoder_select="huffyuv_decoder"
2480 ffvhuff_encoder_select="huffyuv_encoder"
2481 fic_decoder_select="golomb"
2482 flac_decoder_select="flacdsp"
2483 flac_encoder_select="bswapdsp flacdsp lpc"
2484 flashsv2_decoder_select="zlib"
2485 flashsv2_encoder_select="zlib"
2486 flashsv_decoder_select="zlib"
2487 flashsv_encoder_select="zlib"
2488 flv_decoder_select="h263_decoder"
2489 flv_encoder_select="h263_encoder"
2490 fourxm_decoder_select="blockdsp bswapdsp"
2491 fraps_decoder_select="bswapdsp huffman"
2492 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2493 g729_decoder_select="audiodsp"
2494 h261_decoder_select="mpegvideo"
2495 h261_encoder_select="aandcttables mpegvideoenc"
2496 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2497 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2498 h263i_decoder_select="h263_decoder"
2499 h263p_decoder_select="h263_decoder"
2500 h263p_encoder_select="h263_encoder"
2501 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2502 h264_decoder_suggest="error_resilience"
2503 hap_decoder_select="snappy texturedsp"
2504 hap_encoder_deps="libsnappy"
2505 hap_encoder_select="texturedspenc"
2506 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2507 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2508 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2509 iac_decoder_select="imc_decoder"
2510 imc_decoder_select="bswapdsp fft mdct sinewin"
2511 indeo3_decoder_select="hpeldsp"
2512 indeo4_decoder_select="ividsp"
2513 indeo5_decoder_select="ividsp"
2514 interplay_video_decoder_select="hpeldsp"
2515 jpegls_decoder_select="mjpeg_decoder"
2516 jv_decoder_select="blockdsp"
2517 lagarith_decoder_select="llviddsp"
2518 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2519 magicyuv_decoder_select="llviddsp"
2520 magicyuv_encoder_select="llvidencdsp"
2521 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2522 metasound_decoder_select="lsp mdct sinewin"
2523 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2524 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2525 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2526 mjpegb_decoder_select="mjpeg_decoder"
2527 mlp_decoder_select="mlp_parser"
2528 mlp_encoder_select="lpc"
2529 motionpixels_decoder_select="bswapdsp"
2530 mp1_decoder_select="mpegaudio"
2531 mp1float_decoder_select="mpegaudio"
2532 mp2_decoder_select="mpegaudio"
2533 mp2float_decoder_select="mpegaudio"
2534 mp3_decoder_select="mpegaudio"
2535 mp3adu_decoder_select="mpegaudio"
2536 mp3adufloat_decoder_select="mpegaudio"
2537 mp3float_decoder_select="mpegaudio"
2538 mp3on4_decoder_select="mpegaudio"
2539 mp3on4float_decoder_select="mpegaudio"
2540 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2541 mpc8_decoder_select="mpegaudiodsp"
2542 mpegvideo_decoder_select="mpegvideo"
2543 mpeg1video_decoder_select="mpegvideo"
2544 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2545 mpeg2video_decoder_select="mpegvideo"
2546 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2547 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2548 mpeg4_encoder_select="h263_encoder"
2549 msa1_decoder_select="mss34dsp"
2550 mscc_decoder_select="zlib"
2551 msmpeg4v1_decoder_select="h263_decoder"
2552 msmpeg4v2_decoder_select="h263_decoder"
2553 msmpeg4v2_encoder_select="h263_encoder"
2554 msmpeg4v3_decoder_select="h263_decoder"
2555 msmpeg4v3_encoder_select="h263_encoder"
2556 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2557 mts2_decoder_select="mss34dsp"
2558 mxpeg_decoder_select="mjpeg_decoder"
2559 nellymoser_decoder_select="mdct sinewin"
2560 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2561 nuv_decoder_select="idctdsp lzo"
2562 on2avc_decoder_select="mdct"
2563 opus_decoder_deps="swresample"
2564 opus_decoder_select="mdct15"
2565 opus_encoder_select="audio_frame_queue mdct15"
2566 png_decoder_select="zlib"
2567 png_encoder_select="llvidencdsp zlib"
2568 prores_decoder_select="blockdsp idctdsp"
2569 prores_encoder_select="fdctdsp"
2570 qcelp_decoder_select="lsp"
2571 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2572 ra_144_decoder_select="audiodsp"
2573 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2574 ralf_decoder_select="golomb"
2575 rawvideo_decoder_select="bswapdsp"
2576 rscc_decoder_select="zlib"
2577 rtjpeg_decoder_select="me_cmp"
2578 rv10_decoder_select="h263_decoder"
2579 rv10_encoder_select="h263_encoder"
2580 rv20_decoder_select="h263_decoder"
2581 rv20_encoder_select="h263_encoder"
2582 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2583 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2584 screenpresso_decoder_select="zlib"
2585 shorten_decoder_select="bswapdsp"
2586 sipr_decoder_select="lsp"
2587 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2588 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2589 sonic_decoder_select="golomb rangecoder"
2590 sonic_encoder_select="golomb rangecoder"
2591 sonic_ls_encoder_select="golomb rangecoder"
2592 sp5x_decoder_select="mjpeg_decoder"
2593 srgc_decoder_select="zlib"
2594 svq1_decoder_select="hpeldsp"
2595 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2596 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2597 svq3_decoder_suggest="zlib"
2598 tak_decoder_select="audiodsp"
2599 tdsc_decoder_select="zlib mjpeg_decoder"
2600 theora_decoder_select="vp3_decoder"
2601 thp_decoder_select="mjpeg_decoder"
2602 tiff_decoder_suggest="zlib lzma"
2603 tiff_encoder_suggest="zlib"
2604 truehd_decoder_select="mlp_parser"
2605 truehd_encoder_select="lpc"
2606 truemotion2_decoder_select="bswapdsp"
2607 truespeech_decoder_select="bswapdsp"
2608 tscc_decoder_select="zlib"
2609 twinvq_decoder_select="mdct lsp sinewin"
2610 txd_decoder_select="texturedsp"
2611 utvideo_decoder_select="bswapdsp llviddsp"
2612 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2613 vble_decoder_select="llviddsp"
2614 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2615 vc1image_decoder_select="vc1_decoder"
2616 vorbis_decoder_select="mdct"
2617 vorbis_encoder_select="mdct"
2618 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2619 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2620 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2621 vp6a_decoder_select="vp6_decoder"
2622 vp6f_decoder_select="vp6_decoder"
2623 vp7_decoder_select="h264pred videodsp vp8dsp"
2624 vp8_decoder_select="h264pred videodsp vp8dsp"
2625 vp9_decoder_select="videodsp vp9_parser"
2626 webp_decoder_select="vp8_decoder exif"
2627 wmalossless_decoder_select="llauddsp"
2628 wmapro_decoder_select="mdct sinewin wma_freqs"
2629 wmav1_decoder_select="mdct sinewin wma_freqs"
2630 wmav1_encoder_select="mdct sinewin wma_freqs"
2631 wmav2_decoder_select="mdct sinewin wma_freqs"
2632 wmav2_encoder_select="mdct sinewin wma_freqs"
2633 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2634 wmv1_decoder_select="h263_decoder"
2635 wmv1_encoder_select="h263_encoder"
2636 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2637 wmv2_encoder_select="h263_encoder wmv2dsp"
2638 wmv3_decoder_select="vc1_decoder"
2639 wmv3image_decoder_select="wmv3_decoder"
2640 xma1_decoder_select="wmapro_decoder"
2641 xma2_decoder_select="wmapro_decoder"
2642 zerocodec_decoder_select="zlib"
2643 zlib_decoder_select="zlib"
2644 zlib_encoder_select="zlib"
2645 zmbv_decoder_select="zlib"
2646 zmbv_encoder_select="zlib"
2647
2648 # hardware accelerators
2649 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2650 cuda_deps_any="libdl LoadLibrary"
2651 cuvid_deps="cuda"
2652 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2653 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2654 nvdec_deps="cuda"
2655 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2656 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2657 xvmc_deps="X11_extensions_XvMClib_h"
2658
2659 h263_vaapi_hwaccel_deps="vaapi"
2660 h263_vaapi_hwaccel_select="h263_decoder"
2661 h263_videotoolbox_hwaccel_deps="videotoolbox"
2662 h263_videotoolbox_hwaccel_select="h263_decoder"
2663 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2664 h264_d3d11va_hwaccel_deps="d3d11va"
2665 h264_d3d11va_hwaccel_select="h264_decoder"
2666 h264_d3d11va2_hwaccel_deps="d3d11va"
2667 h264_d3d11va2_hwaccel_select="h264_decoder"
2668 h264_dxva2_hwaccel_deps="dxva2"
2669 h264_dxva2_hwaccel_select="h264_decoder"
2670 h264_mediacodec_hwaccel_deps="mediacodec"
2671 h264_mmal_hwaccel_deps="mmal"
2672 h264_nvdec_hwaccel_deps="nvdec"
2673 h264_nvdec_hwaccel_select="h264_decoder"
2674 h264_qsv_hwaccel_deps="libmfx"
2675 h264_vaapi_hwaccel_deps="vaapi"
2676 h264_vaapi_hwaccel_select="h264_decoder"
2677 h264_vdpau_hwaccel_deps="vdpau"
2678 h264_vdpau_hwaccel_select="h264_decoder"
2679 h264_videotoolbox_hwaccel_deps="videotoolbox"
2680 h264_videotoolbox_hwaccel_select="h264_decoder"
2681 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2682 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2683 hevc_d3d11va_hwaccel_select="hevc_decoder"
2684 hevc_mediacodec_hwaccel_deps="mediacodec"
2685 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2686 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2687 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2688 hevc_dxva2_hwaccel_select="hevc_decoder"
2689 hevc_nvdec_hwaccel_deps="nvdec"
2690 hevc_nvdec_hwaccel_select="hevc_decoder"
2691 hevc_qsv_hwaccel_deps="libmfx"
2692 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2693 hevc_vaapi_hwaccel_select="hevc_decoder"
2694 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2695 hevc_vdpau_hwaccel_select="hevc_decoder"
2696 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2697 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2698 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2699 mpeg_xvmc_hwaccel_deps="xvmc"
2700 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2701 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2702 mpeg1_vdpau_hwaccel_deps="vdpau"
2703 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2704 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2705 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2706 mpeg1_xvmc_hwaccel_deps="xvmc"
2707 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2708 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2709 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2710 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2711 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2712 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2713 mpeg2_dxva2_hwaccel_deps="dxva2"
2714 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2715 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2716 mpeg2_mmal_hwaccel_deps="mmal"
2717 mpeg2_qsv_hwaccel_deps="libmfx"
2718 mpeg2_vaapi_hwaccel_deps="vaapi"
2719 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_vdpau_hwaccel_deps="vdpau"
2721 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2723 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_xvmc_hwaccel_deps="xvmc"
2725 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2726 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2727 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2728 mpeg4_mmal_hwaccel_deps="mmal"
2729 mpeg4_vaapi_hwaccel_deps="vaapi"
2730 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2731 mpeg4_vdpau_hwaccel_deps="vdpau"
2732 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2733 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2734 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2735 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2736 vc1_d3d11va_hwaccel_deps="d3d11va"
2737 vc1_d3d11va_hwaccel_select="vc1_decoder"
2738 vc1_d3d11va2_hwaccel_deps="d3d11va"
2739 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2740 vc1_dxva2_hwaccel_deps="dxva2"
2741 vc1_dxva2_hwaccel_select="vc1_decoder"
2742 vc1_mmal_hwaccel_deps="mmal"
2743 vc1_qsv_hwaccel_deps="libmfx"
2744 vc1_vaapi_hwaccel_deps="vaapi"
2745 vc1_vaapi_hwaccel_select="vc1_decoder"
2746 vc1_vdpau_hwaccel_deps="vdpau"
2747 vc1_vdpau_hwaccel_select="vc1_decoder"
2748 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2749 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2750 vp8_mediacodec_hwaccel_deps="mediacodec"
2751 vp8_qsv_hwaccel_deps="libmfx"
2752 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2753 vp9_d3d11va_hwaccel_select="vp9_decoder"
2754 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2755 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2756 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2757 vp9_dxva2_hwaccel_select="vp9_decoder"
2758 vp9_mediacodec_hwaccel_deps="mediacodec"
2759 vp9_nvdec_hwaccel_deps="nvdec"
2760 vp9_nvdec_hwaccel_select="vp9_decoder"
2761 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2762 vp9_vaapi_hwaccel_select="vp9_decoder"
2763 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2764 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2765 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2766 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2767 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2768
2769 # hardware-accelerated codecs
2770 omx_deps="libdl pthreads"
2771 omx_rpi_select="omx"
2772 qsv_deps="libmfx"
2773 qsvdec_select="qsv"
2774 qsvenc_select="qsv"
2775 qsvvpp_select="qsv"
2776 vaapi_encode_deps="vaapi"
2777 v4l2_m2m_deps_any="linux_videodev2_h"
2778
2779 hwupload_cuda_filter_deps="cuda"
2780 scale_npp_filter_deps="cuda libnpp"
2781 scale_cuda_filter_deps="cuda_sdk"
2782 thumbnail_cuda_filter_deps="cuda_sdk"
2783
2784 nvenc_deps="cuda"
2785 nvenc_deps_any="libdl LoadLibrary"
2786 nvenc_encoder_deps="nvenc"
2787
2788 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2789 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2790 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2791 h264_cuvid_decoder_deps="cuvid"
2792 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2793 h264_mediacodec_decoder_deps="mediacodec"
2794 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2795 h264_mmal_decoder_deps="mmal"
2796 h264_nvenc_encoder_deps="nvenc"
2797 h264_omx_encoder_deps="omx"
2798 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2799 h264_qsv_encoder_select="qsvenc"
2800 h264_rkmpp_decoder_deps="rkmpp"
2801 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2802 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2803 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2804 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2805 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2806 hevc_cuvid_decoder_deps="cuvid"
2807 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2808 hevc_mediacodec_decoder_deps="mediacodec"
2809 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2810 hevc_nvenc_encoder_deps="nvenc"
2811 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2812 hevc_qsv_encoder_select="hevcparse qsvenc"
2813 hevc_rkmpp_decoder_deps="rkmpp"
2814 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2815 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2816 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2817 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2818 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2819 mjpeg_cuvid_decoder_deps="cuvid"
2820 mjpeg_qsv_encoder_deps="libmfx"
2821 mjpeg_qsv_encoder_select="qsvenc"
2822 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2823 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2824 mpeg1_cuvid_decoder_deps="cuvid"
2825 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2826 mpeg2_crystalhd_decoder_select="crystalhd"
2827 mpeg2_cuvid_decoder_deps="cuvid"
2828 mpeg2_mmal_decoder_deps="mmal"
2829 mpeg2_mediacodec_decoder_deps="mediacodec"
2830 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2831 mpeg2_qsv_encoder_select="qsvenc"
2832 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2833 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2834 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2835 mpeg4_crystalhd_decoder_select="crystalhd"
2836 mpeg4_cuvid_decoder_deps="cuvid"
2837 mpeg4_mediacodec_decoder_deps="mediacodec"
2838 mpeg4_mmal_decoder_deps="mmal"
2839 mpeg4_omx_encoder_deps="omx"
2840 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2841 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2842 msmpeg4_crystalhd_decoder_select="crystalhd"
2843 nvenc_h264_encoder_select="h264_nvenc_encoder"
2844 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2845 vc1_crystalhd_decoder_select="crystalhd"
2846 vc1_cuvid_decoder_deps="cuvid"
2847 vc1_mmal_decoder_deps="mmal"
2848 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2849 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2850 vp8_cuvid_decoder_deps="cuvid"
2851 vp8_mediacodec_decoder_deps="mediacodec"
2852 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2853 vp8_rkmpp_decoder_deps="rkmpp"
2854 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2855 vp8_vaapi_encoder_select="vaapi_encode"
2856 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2857 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2858 vp9_cuvid_decoder_deps="cuvid"
2859 vp9_mediacodec_decoder_deps="mediacodec"
2860 vp9_rkmpp_decoder_deps="rkmpp"
2861 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2862 vp9_vaapi_encoder_select="vaapi_encode"
2863 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2864 wmv3_crystalhd_decoder_select="crystalhd"
2865
2866 # parsers
2867 aac_parser_select="adts_header"
2868 h264_parser_select="golomb h264dsp h264parse"
2869 hevc_parser_select="hevcparse"
2870 mpegaudio_parser_select="mpegaudioheader"
2871 mpegvideo_parser_select="mpegvideo"
2872 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2873 vc1_parser_select="vc1dsp"
2874
2875 # bitstream_filters
2876 aac_adtstoasc_bsf_select="adts_header"
2877 h264_metadata_bsf_select="cbs_h264"
2878 h264_redundant_pps_bsf_select="cbs_h264"
2879 hevc_metadata_bsf_select="cbs_h265"
2880 mjpeg2jpeg_bsf_select="jpegtables"
2881 mpeg2_metadata_bsf_select="cbs_mpeg2"
2882 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2883
2884 # external libraries
2885 aac_at_decoder_deps="audiotoolbox"
2886 ac3_at_decoder_deps="audiotoolbox"
2887 ac3_at_decoder_select="ac3_parser"
2888 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2889 alac_at_decoder_deps="audiotoolbox"
2890 amr_nb_at_decoder_deps="audiotoolbox"
2891 avisynth_deps_any="libdl LoadLibrary"
2892 avisynth_demuxer_deps="avisynth"
2893 avisynth_demuxer_select="riffdec"
2894 eac3_at_decoder_deps="audiotoolbox"
2895 eac3_at_decoder_select="ac3_parser"
2896 gsm_ms_at_decoder_deps="audiotoolbox"
2897 ilbc_at_decoder_deps="audiotoolbox"
2898 mp1_at_decoder_deps="audiotoolbox"
2899 mp2_at_decoder_deps="audiotoolbox"
2900 mp3_at_decoder_deps="audiotoolbox"
2901 mp1_at_decoder_select="mpegaudioheader"
2902 mp2_at_decoder_select="mpegaudioheader"
2903 mp3_at_decoder_select="mpegaudioheader"
2904 pcm_alaw_at_decoder_deps="audiotoolbox"
2905 pcm_mulaw_at_decoder_deps="audiotoolbox"
2906 qdmc_at_decoder_deps="audiotoolbox"
2907 qdm2_at_decoder_deps="audiotoolbox"
2908 aac_at_encoder_deps="audiotoolbox"
2909 aac_at_encoder_select="audio_frame_queue"
2910 alac_at_encoder_deps="audiotoolbox"
2911 alac_at_encoder_select="audio_frame_queue"
2912 ilbc_at_encoder_deps="audiotoolbox"
2913 ilbc_at_encoder_select="audio_frame_queue"
2914 pcm_alaw_at_encoder_deps="audiotoolbox"
2915 pcm_alaw_at_encoder_select="audio_frame_queue"
2916 pcm_mulaw_at_encoder_deps="audiotoolbox"
2917 pcm_mulaw_at_encoder_select="audio_frame_queue"
2918 chromaprint_muxer_deps="chromaprint"
2919 h264_videotoolbox_encoder_deps="pthreads"
2920 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2921 hevc_videotoolbox_encoder_deps="pthreads"
2922 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2923 libcelt_decoder_deps="libcelt"
2924 libfdk_aac_decoder_deps="libfdk_aac"
2925 libfdk_aac_encoder_deps="libfdk_aac"
2926 libfdk_aac_encoder_select="audio_frame_queue"
2927 libgme_demuxer_deps="libgme"
2928 libgsm_decoder_deps="libgsm"
2929 libgsm_encoder_deps="libgsm"
2930 libgsm_ms_decoder_deps="libgsm"
2931 libgsm_ms_encoder_deps="libgsm"
2932 libilbc_decoder_deps="libilbc"
2933 libilbc_encoder_deps="libilbc"
2934 libkvazaar_encoder_deps="libkvazaar"
2935 libmodplug_demuxer_deps="libmodplug"
2936 libmp3lame_encoder_deps="libmp3lame"
2937 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2938 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2939 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2940 libopencore_amrnb_encoder_select="audio_frame_queue"
2941 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2942 libopenh264_decoder_deps="libopenh264"
2943 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2944 libopenh264_encoder_deps="libopenh264"
2945 libopenjpeg_decoder_deps="libopenjpeg"
2946 libopenjpeg_encoder_deps="libopenjpeg"
2947 libopenmpt_demuxer_deps="libopenmpt"
2948 libopus_decoder_deps="libopus"
2949 libopus_encoder_deps="libopus"
2950 libopus_encoder_select="audio_frame_queue"
2951 librsvg_decoder_deps="librsvg"
2952 libshine_encoder_deps="libshine"
2953 libshine_encoder_select="audio_frame_queue"
2954 libspeex_decoder_deps="libspeex"
2955 libspeex_encoder_deps="libspeex"
2956 libspeex_encoder_select="audio_frame_queue"
2957 libtheora_encoder_deps="libtheora"
2958 libtwolame_encoder_deps="libtwolame"
2959 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2960 libvorbis_decoder_deps="libvorbis"
2961 libvorbis_encoder_deps="libvorbis libvorbisenc"
2962 libvorbis_encoder_select="audio_frame_queue"
2963 libvpx_vp8_decoder_deps="libvpx"
2964 libvpx_vp8_encoder_deps="libvpx"
2965 libvpx_vp9_decoder_deps="libvpx"
2966 libvpx_vp9_encoder_deps="libvpx"
2967 libwavpack_encoder_deps="libwavpack"
2968 libwavpack_encoder_select="audio_frame_queue"
2969 libwebp_encoder_deps="libwebp"
2970 libwebp_anim_encoder_deps="libwebp"
2971 libx262_encoder_deps="libx262"
2972 libx264_encoder_deps="libx264"
2973 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2974 libx264rgb_encoder_select="libx264_encoder"
2975 libx265_encoder_deps="libx265"
2976 libxavs_encoder_deps="libxavs"
2977 libxvid_encoder_deps="libxvid"
2978 libzvbi_teletext_decoder_deps="libzvbi"
2979 videotoolbox_suggest="coreservices"
2980 videotoolbox_deps="corefoundation coremedia corevideo"
2981 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2982
2983 # demuxers / muxers
2984 ac3_demuxer_select="ac3_parser"
2985 aiff_muxer_select="iso_media"
2986 asf_demuxer_select="riffdec"
2987 asf_o_demuxer_select="riffdec"
2988 asf_muxer_select="riffenc"
2989 asf_stream_muxer_select="asf_muxer"
2990 avi_demuxer_select="iso_media riffdec exif"
2991 avi_muxer_select="riffenc"
2992 caf_demuxer_select="iso_media riffdec"
2993 caf_muxer_select="iso_media"
2994 dash_muxer_select="mp4_muxer"
2995 dash_demuxer_deps="libxml2"
2996 dirac_demuxer_select="dirac_parser"
2997 dts_demuxer_select="dca_parser"
2998 dtshd_demuxer_select="dca_parser"
2999 dv_demuxer_select="dvprofile"
3000 dv_muxer_select="dvprofile"
3001 dxa_demuxer_select="riffdec"
3002 eac3_demuxer_select="ac3_parser"
3003 f4v_muxer_select="mov_muxer"
3004 fifo_muxer_deps="threads"
3005 flac_demuxer_select="flac_parser"
3006 hds_muxer_select="flv_muxer"
3007 hls_muxer_select="mpegts_muxer"
3008 hls_muxer_suggest="gcrypt openssl"
3009 image2_alias_pix_demuxer_select="image2_demuxer"
3010 image2_brender_pix_demuxer_select="image2_demuxer"
3011 ipod_muxer_select="mov_muxer"
3012 ismv_muxer_select="mov_muxer"
3013 matroska_audio_muxer_select="matroska_muxer"
3014 matroska_demuxer_select="iso_media riffdec"
3015 matroska_demuxer_suggest="bzlib lzo zlib"
3016 matroska_muxer_select="iso_media riffenc"
3017 mmf_muxer_select="riffenc"
3018 mov_demuxer_select="iso_media riffdec"
3019 mov_demuxer_suggest="zlib"
3020 mov_muxer_select="iso_media riffenc rtpenc_chain"
3021 mp3_demuxer_select="mpegaudio_parser"
3022 mp3_muxer_select="mpegaudioheader"
3023 mp4_muxer_select="mov_muxer"
3024 mpegts_demuxer_select="iso_media"
3025 mpegts_muxer_select="adts_muxer latm_muxer"
3026 mpegtsraw_demuxer_select="mpegts_demuxer"
3027 mxf_d10_muxer_select="mxf_muxer"
3028 mxf_opatom_muxer_select="mxf_muxer"
3029 nut_muxer_select="riffenc"
3030 nuv_demuxer_select="riffdec"
3031 oga_muxer_select="ogg_muxer"
3032 ogg_demuxer_select="dirac_parse"
3033 ogv_muxer_select="ogg_muxer"
3034 opus_muxer_select="ogg_muxer"
3035 psp_muxer_select="mov_muxer"
3036 rtp_demuxer_select="sdp_demuxer"
3037 rtp_muxer_select="golomb"
3038 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3039 rtsp_demuxer_select="http_protocol rtpdec"
3040 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3041 sap_demuxer_select="sdp_demuxer"
3042 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3043 sdp_demuxer_select="rtpdec"
3044 smoothstreaming_muxer_select="ismv_muxer"
3045 spdif_demuxer_select="adts_header"
3046 spdif_muxer_select="adts_header"
3047 spx_muxer_select="ogg_muxer"
3048 swf_demuxer_suggest="zlib"
3049 tak_demuxer_select="tak_parser"
3050 tg2_muxer_select="mov_muxer"
3051 tgp_muxer_select="mov_muxer"
3052 vobsub_demuxer_select="mpegps_demuxer"
3053 w64_demuxer_select="wav_demuxer"
3054 w64_muxer_select="wav_muxer"
3055 wav_demuxer_select="riffdec"
3056 wav_muxer_select="riffenc"
3057 webm_muxer_select="iso_media riffenc"
3058 webm_dash_manifest_demuxer_select="matroska_demuxer"
3059 wtv_demuxer_select="mpegts_demuxer riffdec"
3060 wtv_muxer_select="mpegts_muxer riffenc"
3061 xmv_demuxer_select="riffdec"
3062 xwma_demuxer_select="riffdec"
3063
3064 # indevs / outdevs
3065 alsa_indev_deps="alsa"
3066 alsa_outdev_deps="alsa"
3067 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3068 avfoundation_indev_suggest="coregraphics applicationservices"
3069 avfoundation_indev_extralibs="-framework Foundation"
3070 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3071 caca_outdev_deps="libcaca"
3072 decklink_deps_any="libdl LoadLibrary"
3073 decklink_indev_deps="decklink threads"
3074 decklink_indev_extralibs="-lstdc++"
3075 decklink_outdev_deps="decklink threads"
3076 decklink_outdev_extralibs="-lstdc++"
3077 libndi_newtek_indev_deps="libndi_newtek"
3078 libndi_newtek_indev_extralibs="-lndi"
3079 libndi_newtek_outdev_deps="libndi_newtek"
3080 libndi_newtek_outdev_extralibs="-lndi"
3081 dshow_indev_deps="IBaseFilter"
3082 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3083 fbdev_indev_deps="linux_fb_h"
3084 fbdev_outdev_deps="linux_fb_h"
3085 gdigrab_indev_deps="CreateDIBSection"
3086 gdigrab_indev_extralibs="-lgdi32"
3087 gdigrab_indev_select="bmp_decoder"
3088 iec61883_indev_deps="libiec61883"
3089 jack_indev_deps="libjack"
3090 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3091 kmsgrab_indev_deps="libdrm"
3092 lavfi_indev_deps="avfilter"
3093 libcdio_indev_deps="libcdio"
3094 libdc1394_indev_deps="libdc1394"
3095 openal_indev_deps="openal"
3096 opengl_outdev_deps="opengl"
3097 oss_indev_deps_any="sys_soundcard_h"
3098 oss_outdev_deps_any="sys_soundcard_h"
3099 pulse_indev_deps="libpulse"
3100 pulse_outdev_deps="libpulse"
3101 sdl2_outdev_deps="sdl2"
3102 sndio_indev_deps="sndio"
3103 sndio_outdev_deps="sndio"
3104 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3105 v4l2_indev_suggest="libv4l2"
3106 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3107 v4l2_outdev_suggest="libv4l2"
3108 vfwcap_indev_deps="vfw32 vfwcap_defines"
3109 xcbgrab_indev_deps="libxcb"
3110 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3111 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3112 xv_outdev_extralibs="-lXv -lX11 -lXext"
3113
3114 # protocols
3115 async_protocol_deps="threads"
3116 bluray_protocol_deps="libbluray"
3117 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3118 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3119 ffrtmpcrypt_protocol_select="tcp_protocol"
3120 ffrtmphttp_protocol_conflict="librtmp_protocol"
3121 ffrtmphttp_protocol_select="http_protocol"
3122 ftp_protocol_select="tcp_protocol"
3123 gopher_protocol_select="network"
3124 http_protocol_select="tcp_protocol"
3125 http_protocol_suggest="zlib"
3126 httpproxy_protocol_select="tcp_protocol"
3127 httpproxy_protocol_suggest="zlib"
3128 https_protocol_select="tls_protocol"
3129 https_protocol_suggest="zlib"
3130 icecast_protocol_select="http_protocol"
3131 librtmp_protocol_deps="librtmp"
3132 librtmpe_protocol_deps="librtmp"
3133 librtmps_protocol_deps="librtmp"
3134 librtmpt_protocol_deps="librtmp"
3135 librtmpte_protocol_deps="librtmp"
3136 libsmbclient_protocol_deps="libsmbclient gplv3"
3137 libssh_protocol_deps="libssh"
3138 mmsh_protocol_select="http_protocol"
3139 mmst_protocol_select="network"
3140 rtmp_protocol_conflict="librtmp_protocol"
3141 rtmp_protocol_select="tcp_protocol"
3142 rtmp_protocol_suggest="zlib"
3143 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3144 rtmpe_protocol_suggest="zlib"
3145 rtmps_protocol_conflict="librtmp_protocol"
3146 rtmps_protocol_select="tls_protocol"
3147 rtmps_protocol_suggest="zlib"
3148 rtmpt_protocol_select="ffrtmphttp_protocol"
3149 rtmpt_protocol_suggest="zlib"
3150 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3151 rtmpte_protocol_suggest="zlib"
3152 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3153 rtmpts_protocol_suggest="zlib"
3154 rtp_protocol_select="udp_protocol"
3155 schannel_conflict="openssl gnutls"
3156 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3157 sctp_protocol_select="network"
3158 securetransport_conflict="openssl gnutls"
3159 srtp_protocol_select="rtp_protocol srtp"
3160 tcp_protocol_select="network"
3161 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3162 tls_protocol_select="tcp_protocol"
3163 udp_protocol_select="network"
3164 udplite_protocol_select="network"
3165 unix_protocol_deps="sys_un_h"
3166 unix_protocol_select="network"
3167
3168 # filters
3169 afftfilt_filter_deps="avcodec"
3170 afftfilt_filter_select="fft"
3171 afir_filter_deps="avcodec"
3172 afir_filter_select="fft"
3173 amovie_filter_deps="avcodec avformat"
3174 aresample_filter_deps="swresample"
3175 ass_filter_deps="libass"
3176 atempo_filter_deps="avcodec"
3177 atempo_filter_select="rdft"
3178 azmq_filter_deps="libzmq"
3179 blackframe_filter_deps="gpl"
3180 boxblur_filter_deps="gpl"
3181 bs2b_filter_deps="libbs2b"
3182 colormatrix_filter_deps="gpl"
3183 coreimage_filter_deps="coreimage appkit"
3184 coreimage_filter_extralibs="-framework OpenGL"
3185 coreimagesrc_filter_deps="coreimage appkit"
3186 coreimagesrc_filter_extralibs="-framework OpenGL"
3187 cover_rect_filter_deps="avcodec avformat gpl"
3188 cropdetect_filter_deps="gpl"
3189 deinterlace_qsv_filter_deps="libmfx"
3190 deinterlace_vaapi_filter_deps="vaapi"
3191 delogo_filter_deps="gpl"
3192 deshake_filter_select="pixelutils"
3193 deshake_filter_suggest="opencl"
3194 drawtext_filter_deps="libfreetype"
3195 drawtext_filter_suggest="libfontconfig libfribidi"
3196 elbg_filter_deps="avcodec"
3197 eq_filter_deps="gpl"
3198 fftfilt_filter_deps="avcodec"
3199 fftfilt_filter_select="rdft"
3200 find_rect_filter_deps="avcodec avformat gpl"
3201 firequalizer_filter_deps="avcodec"
3202 firequalizer_filter_select="rdft"
3203 flite_filter_deps="libflite"
3204 framerate_filter_select="pixelutils"
3205 frei0r_filter_deps="frei0r libdl"
3206 frei0r_src_filter_deps="frei0r libdl"
3207 fspp_filter_deps="gpl"
3208 geq_filter_deps="gpl"
3209 histeq_filter_deps="gpl"
3210 hqdn3d_filter_deps="gpl"
3211 interlace_filter_deps="gpl"
3212 kerndeint_filter_deps="gpl"
3213 ladspa_filter_deps="ladspa libdl"
3214 mcdeint_filter_deps="avcodec gpl"
3215 movie_filter_deps="avcodec avformat"
3216 mpdecimate_filter_deps="gpl"
3217 mpdecimate_filter_select="pixelutils"
3218 mptestsrc_filter_deps="gpl"
3219 negate_filter_deps="lut_filter"
3220 nnedi_filter_deps="gpl"
3221 ocr_filter_deps="libtesseract"
3222 ocv_filter_deps="libopencv"
3223 overlay_qsv_filter_deps="libmfx"
3224 overlay_qsv_filter_select="qsvvpp"
3225 owdenoise_filter_deps="gpl"
3226 pan_filter_deps="swresample"
3227 perspective_filter_deps="gpl"
3228 phase_filter_deps="gpl"
3229 pp7_filter_deps="gpl"
3230 pp_filter_deps="gpl postproc"
3231 pullup_filter_deps="gpl"
3232 removelogo_filter_deps="avcodec avformat swscale"
3233 repeatfields_filter_deps="gpl"
3234 resample_filter_deps="avresample"
3235 rubberband_filter_deps="librubberband"
3236 sab_filter_deps="gpl swscale"
3237 scale2ref_filter_deps="swscale"
3238 scale_filter_deps="swscale"
3239 scale_qsv_filter_deps="libmfx"
3240 select_filter_select="pixelutils"
3241 showcqt_filter_deps="avcodec avformat swscale"
3242 showcqt_filter_suggest="libfontconfig libfreetype"
3243 showcqt_filter_select="fft"
3244 showfreqs_filter_deps="avcodec"
3245 showfreqs_filter_select="fft"
3246 showspectrum_filter_deps="avcodec"
3247 showspectrum_filter_select="fft"
3248 showspectrumpic_filter_deps="avcodec"
3249 showspectrumpic_filter_select="fft"
3250 signature_filter_deps="gpl avcodec avformat"
3251 smartblur_filter_deps="gpl swscale"
3252 sofalizer_filter_deps="libmysofa avcodec"
3253 sofalizer_filter_select="fft"
3254 spectrumsynth_filter_deps="avcodec"
3255 spectrumsynth_filter_select="fft"
3256 spp_filter_deps="gpl avcodec"
3257 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3258 stereo3d_filter_deps="gpl"
3259 subtitles_filter_deps="avformat avcodec libass"
3260 super2xsai_filter_deps="gpl"
3261 pixfmts_super2xsai_test_deps="super2xsai_filter"
3262 tinterlace_filter_deps="gpl"
3263 tinterlace_merge_test_deps="tinterlace_filter"
3264 tinterlace_pad_test_deps="tinterlace_filter"
3265 tonemap_filter_deps="const_nan"
3266 uspp_filter_deps="gpl avcodec"
3267 unsharp_filter_suggest="opencl"
3268 vaguedenoiser_filter_deps="gpl"
3269 vidstabdetect_filter_deps="libvidstab"
3270 vidstabtransform_filter_deps="libvidstab"
3271 libvmaf_filter_deps="libvmaf"
3272 zmq_filter_deps="libzmq"
3273 zoompan_filter_deps="swscale"
3274 zscale_filter_deps="libzimg const_nan"
3275 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3276 vpp_qsv_filter_deps="libmfx"
3277 vpp_qsv_filter_select="qsvvpp"
3278
3279 # examples
3280 avio_dir_cmd_deps="avformat avutil"
3281 avio_reading_deps="avformat avcodec avutil"
3282 decode_audio_example_deps="avcodec avutil"
3283 decode_video_example_deps="avcodec avutil"
3284 demuxing_decoding_example_deps="avcodec avformat avutil"
3285 encode_audio_example_deps="avcodec avutil"
3286 encode_video_example_deps="avcodec avutil"
3287 extract_mvs_example_deps="avcodec avformat avutil"
3288 filter_audio_example_deps="avfilter avutil"
3289 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3290 filtering_video_example_deps="avfilter avcodec avformat avutil"
3291 http_multiclient_example_deps="avformat avutil fork"
3292 hw_decode_example_deps="avcodec avformat avutil"
3293 metadata_example_deps="avformat avutil"
3294 muxing_example_deps="avcodec avformat avutil swscale"
3295 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3296 remuxing_example_deps="avcodec avformat avutil"
3297 resampling_audio_example_deps="avutil swresample"
3298 scaling_video_example_deps="avutil swscale"
3299 transcode_aac_example_deps="avcodec avformat swresample"
3300 transcoding_example_deps="avfilter avcodec avformat avutil"
3301
3302 # EXTRALIBS_LIST
3303 cpu_init_extralibs="pthreads_extralibs"
3304 cws2fws_extralibs="zlib_extralibs"
3305
3306 # libraries, in linking order
3307 avcodec_deps="avutil"
3308 avcodec_suggest="libm"
3309 avcodec_select="null_bsf"
3310 avdevice_deps="avformat avcodec avutil"
3311 avdevice_suggest="libm"
3312 avfilter_deps="avutil"
3313 avfilter_suggest="libm"
3314 avformat_deps="avcodec avutil"
3315 avformat_suggest="libm network zlib"
3316 avresample_deps="avutil"
3317 avresample_suggest="libm"
3318 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3319 postproc_deps="avutil gpl"
3320 postproc_suggest="libm"
3321 swresample_deps="avutil"
3322 swresample_suggest="libm libsoxr"
3323 swscale_deps="avutil"
3324 swscale_suggest="libm"
3325
3326 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3327 avfilter_extralibs="pthreads_extralibs"
3328 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3329
3330 # programs
3331 ffmpeg_deps="avcodec avfilter avformat swresample"
3332 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3333                null_filter
3334                trim_filter"
3335 ffmpeg_suggest="ole32 psapi shell32"
3336 ffplay_deps="avcodec avformat swscale swresample sdl2"
3337 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3338 ffplay_suggest="shell32"
3339 ffprobe_deps="avcodec avformat"
3340 ffprobe_suggest="shell32"
3341 ffserver_deps="avformat fork sarestart"
3342 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3343
3344 # documentation
3345 podpages_deps="perl"
3346 manpages_deps="perl pod2man"
3347 htmlpages_deps="perl"
3348 htmlpages_deps_any="makeinfo_html texi2html"
3349 txtpages_deps="perl makeinfo"
3350 doc_deps_any="manpages htmlpages podpages txtpages"
3351
3352 # default parameters
3353
3354 logfile="ffbuild/config.log"
3355
3356 # installation paths
3357 prefix_default="/usr/local"
3358 bindir_default='${prefix}/bin'
3359 datadir_default='${prefix}/share/ffmpeg'
3360 docdir_default='${prefix}/share/doc/ffmpeg'
3361 incdir_default='${prefix}/include'
3362 libdir_default='${prefix}/lib'
3363 mandir_default='${prefix}/share/man'
3364
3365 # toolchain
3366 ar_default="ar"
3367 cc_default="gcc"
3368 cxx_default="g++"
3369 host_cc_default="gcc"
3370 doxygen_default="doxygen"
3371 install="install"
3372 ln_s_default="ln -s -f"
3373 nm_default="nm -g"
3374 pkg_config_default=pkg-config
3375 ranlib_default="ranlib"
3376 strip_default="strip"
3377 version_script='--version-script'
3378 x86asmexe_default="nasm"
3379 windres_default="windres"
3380 nvcc_default="nvcc"
3381 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3382 striptype="direct"
3383
3384 # OS
3385 target_os_default=$(tolower $(uname -s))
3386 host_os=$target_os_default
3387
3388 # machine
3389 if test "$target_os_default" = aix; then
3390     arch_default=$(uname -p)
3391     strip_default="strip -X32_64"
3392 else
3393     arch_default=$(uname -m)
3394 fi
3395 cpu="generic"
3396 intrinsics="none"
3397
3398 # configurable options
3399 enable $PROGRAM_LIST
3400 enable $DOCUMENT_LIST
3401 enable $EXAMPLE_LIST
3402 enable $(filter_out avresample $LIBRARY_LIST)
3403 enable stripping
3404
3405 enable asm
3406 enable debug
3407 enable doc
3408 enable faan faandct faanidct
3409 enable optimizations
3410 enable runtime_cpudetect
3411 enable safe_bitstream_reader
3412 enable static
3413 enable swscale_alpha
3414 enable valgrind_backtrace
3415
3416 sws_max_filter_size_default=256
3417 set_default sws_max_filter_size
3418
3419 # internal components are enabled by default
3420 enable $EXTRALIBS_LIST
3421
3422 # Avoid external, non-system, libraries getting enabled by dependency resolution
3423 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3424
3425 # build settings
3426 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3427 LIBPREF="lib"
3428 LIBSUF=".a"
3429 FULLNAME='$(NAME)$(BUILDSUF)'
3430 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3431 SLIBPREF="lib"
3432 SLIBSUF=".so"
3433 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3434 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3435 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3436 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3437 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3438 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3439 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3440
3441 asflags_filter=echo
3442 cflags_filter=echo
3443 ldflags_filter=echo
3444
3445 AS_C='-c'
3446 AS_O='-o $@'
3447 CC_C='-c'
3448 CC_E='-E -o $@'
3449 CC_O='-o $@'
3450 CXX_C='-c'
3451 CXX_O='-o $@'
3452 OBJCC_C='-c'
3453 OBJCC_E='-E -o $@'
3454 OBJCC_O='-o $@'
3455 X86ASM_O='-o $@'
3456 LD_O='-o $@'
3457 LD_LIB='-l%'
3458 LD_PATH='-L'
3459 HOSTCC_C='-c'
3460 HOSTCC_E='-E -o $@'
3461 HOSTCC_O='-o $@'
3462 HOSTLD_O='-o $@'
3463 NVCC_C='-c'
3464 NVCC_O='-o $@'
3465
3466 host_extralibs='-lm'
3467 host_cflags_filter=echo
3468 host_ldflags_filter=echo
3469
3470 target_path='$(CURDIR)'
3471
3472 # since the object filename is not given with the -MM flag, the compiler
3473 # is only able to print the basename, and we must add the path ourselves
3474 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3475 DEPFLAGS='-MM'
3476
3477 mkdir -p ffbuild
3478
3479 # find source path
3480 if test -f configure; then
3481     source_path=.
3482 else
3483     source_path=$(cd $(dirname "$0"); pwd)
3484     case "$source_path" in
3485         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3486     esac
3487     test -e "$source_path/config.h" &&
3488         die "Out of tree builds are impossible with config.h in source dir."
3489 fi
3490
3491 for v in "$@"; do
3492     r=${v#*=}
3493     l=${v%"$r"}
3494     r=$(sh_quote "$r")
3495     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3496 done
3497
3498 find_things(){
3499     thing=$1
3500     pattern=$2
3501     file=$source_path/$3
3502     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3503 }
3504
3505 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3506 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3507 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3508 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3509 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3510 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3511 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3512 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3513 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3514
3515 find_things_extern(){
3516     thing=$1
3517     pattern=$2
3518     file=$source_path/$3
3519     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3520 }
3521
3522 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3523 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3524
3525 AVCODEC_COMPONENTS_LIST="
3526     $BSF_LIST
3527     $DECODER_LIST
3528     $ENCODER_LIST
3529     $HWACCEL_LIST
3530     $PARSER_LIST
3531 "
3532
3533 AVDEVICE_COMPONENTS_LIST="
3534     $INDEV_LIST
3535     $OUTDEV_LIST
3536 "
3537
3538 AVFILTER_COMPONENTS_LIST="
3539     $FILTER_LIST
3540 "
3541
3542 AVFORMAT_COMPONENTS_LIST="
3543     $DEMUXER_LIST
3544     $MUXER_LIST
3545     $PROTOCOL_LIST
3546 "
3547
3548 ALL_COMPONENTS="
3549     $AVCODEC_COMPONENTS_LIST
3550     $AVDEVICE_COMPONENTS_LIST
3551     $AVFILTER_COMPONENTS_LIST
3552     $AVFORMAT_COMPONENTS_LIST
3553 "
3554
3555 for n in $COMPONENT_LIST; do
3556     v=$(toupper ${n%s})_LIST
3557     eval enable \$$v
3558     eval ${n}_if_any="\$$v"
3559 done
3560
3561 enable $ARCH_EXT_LIST
3562
3563 die_unknown(){
3564     echo "Unknown option \"$1\"."
3565     echo "See $0 --help for available options."
3566     exit 1
3567 }
3568
3569 print_in_columns() {
3570     cols=$(expr $ncols / 24)
3571     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3572 }
3573
3574 show_list() {
3575     suffix=_$1
3576     shift
3577     echo $* | sed s/$suffix//g | print_in_columns
3578     exit 0
3579 }
3580
3581 rand_list(){
3582     IFS=', '
3583     set -- $*
3584     unset IFS
3585     for thing; do
3586         comp=${thing%:*}
3587         prob=${thing#$comp}
3588         prob=${prob#:}
3589         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3590         echo "prob ${prob:-0.5}"
3591         printf '%s\n' $comp
3592     done
3593 }
3594
3595 do_random(){
3596     action=$1
3597     shift
3598     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3599     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3600 }
3601
3602 for opt do
3603     optval="${opt#*=}"
3604     case "$opt" in
3605         --extra-ldflags=*)
3606             add_ldflags $optval
3607         ;;
3608         --extra-ldexeflags=*)
3609             add_ldexeflags $optval
3610         ;;
3611         --extra-ldsoflags=*)
3612             add_ldsoflags $optval
3613         ;;
3614         --extra-ldlibflags=*)
3615             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3616                  "removed in the future. Use --extra-ldsoflags instead."
3617             add_ldsoflags $optval
3618         ;;
3619         --extra-libs=*)
3620             add_extralibs $optval
3621         ;;
3622         --disable-devices)
3623             disable $INDEV_LIST $OUTDEV_LIST
3624         ;;
3625         --enable-debug=*)
3626             debuglevel="$optval"
3627         ;;
3628         --disable-programs)
3629             disable $PROGRAM_LIST
3630         ;;
3631         --disable-everything)
3632             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3633         ;;
3634         --disable-all)
3635             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3636             disable $LIBRARY_LIST $PROGRAM_LIST doc
3637             enable avutil
3638         ;;
3639         --enable-random|--disable-random)
3640             action=${opt%%-random}
3641             do_random ${action#--} $COMPONENT_LIST
3642         ;;
3643         --enable-random=*|--disable-random=*)
3644             action=${opt%%-random=*}
3645             do_random ${action#--} $optval
3646         ;;
3647         --enable-sdl)
3648             enable sdl2
3649         ;;
3650         --enable-*=*|--disable-*=*)
3651             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3652             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3653             eval list=\$$(toupper $thing)_LIST
3654             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3655             list=$(filter "$name" $list)
3656             [ "$list" = "" ] && warn "Option $opt did not match anything"
3657             $action $list
3658         ;;
3659         --enable-yasm|--disable-yasm)
3660             warn "The ${opt} option is only provided for compatibility and will be\n"\
3661                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3662             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3663         ;;
3664         --yasmexe=*)
3665             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3666                  "removed in the future. Use --x86asmexe instead."
3667             x86asmexe="$optval"
3668         ;;
3669         --enable-?*|--disable-?*)
3670             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3671             if is_in $option $COMPONENT_LIST; then
3672                 test $action = disable && action=unset
3673                 eval $action \$$(toupper ${option%s})_LIST
3674             elif is_in $option $CMDLINE_SELECT; then
3675                 $action $option
3676             else
3677                 die_unknown $opt
3678             fi
3679         ;;
3680         --list-*)
3681             NAME="${opt#--list-}"
3682             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3683             NAME=${NAME%s}
3684             eval show_list $NAME \$$(toupper $NAME)_LIST
3685         ;;
3686         --help|-h) show_help
3687         ;;
3688         --quiet|-q) quiet=yes
3689         ;;
3690         --fatal-warnings) enable fatal_warnings
3691         ;;
3692         --libfuzzer=*)
3693             libfuzzer_path="$optval"
3694         ;;
3695         *)
3696             optname="${opt%%=*}"
3697             optname="${optname#--}"
3698             optname=$(echo "$optname" | sed 's/-/_/g')
3699             if is_in $optname $CMDLINE_SET; then
3700                 eval $optname='$optval'
3701             elif is_in $optname $CMDLINE_APPEND; then
3702                 append $optname "$optval"
3703             else
3704                 die_unknown $opt
3705             fi
3706         ;;
3707     esac
3708 done
3709
3710 for e in $env; do
3711     eval "export $e"
3712 done
3713
3714 if disabled autodetect; then
3715
3716     # Unless iconv is explicitely disabled by the user, we still want to probe
3717     # for the iconv from the libc.
3718     disabled iconv || enable libc_iconv
3719
3720     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3721     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3722 fi
3723 # Mark specifically enabled, but normally autodetected libraries as requested.
3724 for lib in $AUTODETECT_LIBS; do
3725     enabled $lib && request $lib
3726 done
3727 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3728 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3729 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3730
3731 disabled logging && logfile=/dev/null
3732
3733 # we need to build at least one lib type
3734 if ! enabled_any static shared; then
3735     cat <<EOF
3736 At least one library type must be built.
3737 Specify --enable-static to build the static libraries or --enable-shared to
3738 build the shared libraries as well. To only build the shared libraries specify
3739 --disable-static in addition to --enable-shared.
3740 EOF
3741     exit 1
3742 fi
3743
3744 die_license_disabled() {
3745     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3746 }
3747
3748 die_license_disabled_gpl() {
3749     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3750 }
3751
3752 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3753 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3754
3755 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3756 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3757
3758 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3759
3760 enabled_all gnutls openssl &&
3761     die "GnuTLS and OpenSSL must not be enabled at the same time."
3762
3763 # Disable all the library-specific components if the library itself
3764 # is disabled, see AVCODEC_LIST and following _LIST variables.
3765
3766 disable_components(){
3767     disabled ${1} && disable $(
3768         eval components="\$$(toupper ${1})_COMPONENTS"
3769         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3770     )
3771 }
3772
3773 map 'disable_components $v' $LIBRARY_LIST
3774
3775 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3776 set >> $logfile
3777
3778 test -n "$valgrind" && toolchain="valgrind-memcheck"
3779
3780 enabled ossfuzz && {
3781     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3782     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3783 }
3784
3785 case "$toolchain" in
3786     *-asan)
3787         cc_default="${toolchain%-asan}"
3788         add_cflags  -fsanitize=address
3789         add_ldflags -fsanitize=address
3790     ;;
3791     *-msan)
3792         cc_default="${toolchain%-msan}"
3793         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3794         add_ldflags -fsanitize=memory
3795     ;;
3796     *-tsan)
3797         cc_default="${toolchain%-tsan}"
3798         add_cflags  -fsanitize=thread -fPIE
3799         add_ldflags -fsanitize=thread -pie
3800         case "$toolchain" in
3801             gcc-tsan)
3802                 add_cflags  -fPIC
3803                 add_ldflags -fPIC
3804                 ;;
3805         esac
3806     ;;
3807     *-usan)
3808         cc_default="${toolchain%-usan}"
3809         add_cflags  -fsanitize=undefined
3810         add_ldflags -fsanitize=undefined
3811     ;;
3812     valgrind-*)
3813         target_exec_default="valgrind"
3814         case "$toolchain" in
3815             valgrind-massif)
3816                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3817                 ;;
3818             valgrind-memcheck)
3819                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3820                 ;;
3821         esac
3822     ;;
3823     msvc)
3824         # Check whether the current MSVC version needs the C99 converter.
3825         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3826         # support enough of C99 to build ffmpeg. Default to the new
3827         # behaviour if the regexp was unable to match anything, since this
3828         # successfully parses the version number of existing supported
3829         # versions that require the converter (MSVC 2010 and 2012).
3830         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3831         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3832             cc_default="cl"
3833             cxx_default="cl"
3834         else
3835             cc_default="c99wrap cl"
3836             cxx_default="c99wrap cl"
3837         fi
3838         ld_default="$source_path/compat/windows/mslink"
3839         nm_default="dumpbin -symbols"
3840         ar_default="lib"
3841         case "$arch" in
3842         aarch64|arm64)
3843             as_default="armasm64"
3844             ;;
3845         arm*)
3846             as_default="armasm"
3847             ;;
3848         esac
3849         target_os_default="win32"
3850         # Use a relative path for TMPDIR. This makes sure all the
3851         # ffconf temp files are written with a relative path, avoiding
3852         # issues with msys/win32 path conversion for MSVC parameters
3853         # such as -Fo<file> or -out:<file>.
3854         TMPDIR=.
3855     ;;
3856     icl)
3857         cc_default="icl"
3858         ld_default="xilink"
3859         nm_default="dumpbin -symbols"
3860         ar_default="xilib"
3861         target_os_default="win32"
3862         TMPDIR=.
3863     ;;
3864     gcov)
3865         add_cflags  -fprofile-arcs -ftest-coverage
3866         add_ldflags -fprofile-arcs -ftest-coverage
3867     ;;
3868     llvm-cov)
3869         add_cflags -fprofile-arcs -ftest-coverage
3870         add_ldflags --coverage
3871     ;;
3872     hardened)
3873         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3874         add_cflags   -fno-strict-overflow -fstack-protector-all
3875         add_ldflags  -Wl,-z,relro -Wl,-z,now
3876         add_cflags   -fPIE
3877         add_ldexeflags -fPIE -pie
3878     ;;
3879     ?*)
3880         die "Unknown toolchain $toolchain"
3881     ;;
3882 esac
3883
3884 test -n "$cross_prefix" && enable cross_compile
3885
3886 if enabled cross_compile; then
3887     test -n "$arch" && test -n "$target_os" ||
3888         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3889 fi
3890
3891 ar_default="${cross_prefix}${ar_default}"
3892 cc_default="${cross_prefix}${cc_default}"
3893 cxx_default="${cross_prefix}${cxx_default}"
3894 nm_default="${cross_prefix}${nm_default}"
3895 pkg_config_default="${cross_prefix}${pkg_config_default}"
3896 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3897     ranlib_default="${cross_prefix}${ranlib_default} -D"
3898 else
3899     ranlib_default="${cross_prefix}${ranlib_default}"
3900 fi
3901 strip_default="${cross_prefix}${strip_default}"
3902 windres_default="${cross_prefix}${windres_default}"
3903
3904 sysinclude_default="${sysroot}/usr/include"
3905
3906 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3907     target_exec target_os x86asmexe nvcc
3908 enabled cross_compile || host_cc_default=$cc
3909 set_default host_cc
3910
3911 pkg_config_fail_message=""
3912 if ! $pkg_config --version >/dev/null 2>&1; then
3913     warn "$pkg_config not found, library detection may fail."
3914     pkg_config=false
3915 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3916     pkg_config_fail_message="
3917 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3918 fi
3919
3920 if test $doxygen != $doxygen_default && \
3921   ! $doxygen --version >/dev/null 2>&1; then
3922     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3923 fi
3924
3925 exesuf() {
3926     case $1 in
3927         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3928     esac
3929 }
3930
3931 EXESUF=$(exesuf $target_os)
3932 HOSTEXESUF=$(exesuf $host_os)
3933
3934 # set temporary file name
3935 : ${TMPDIR:=$TEMPDIR}
3936 : ${TMPDIR:=$TMP}
3937 : ${TMPDIR:=/tmp}
3938
3939 if [ -n "$tempprefix" ] ; then
3940     mktemp(){
3941         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3942         echo "$tmpname"
3943         mkdir "$tmpname"
3944     }
3945 elif ! check_cmd mktemp -u XXXXXX; then
3946     # simple replacement for missing mktemp
3947     # NOT SAFE FOR GENERAL USE
3948     mktemp(){
3949         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3950         echo "$tmpname"
3951         mkdir "$tmpname"
3952     }
3953 fi
3954
3955 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3956     die "Unable to create temporary directory in $TMPDIR."
3957
3958 tmpfile(){
3959     tmp="${FFTMPDIR}/test"$2
3960     (set -C; exec > $tmp) 2> /dev/null ||
3961         die "Unable to create temporary file in $FFTMPDIR."
3962     eval $1=$tmp
3963 }
3964
3965 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3966 trap 'exit 2' INT
3967
3968 tmpfile TMPASM .asm
3969 tmpfile TMPC   .c
3970 tmpfile TMPCPP .cpp
3971 tmpfile TMPE   $EXESUF
3972 tmpfile TMPH   .h
3973 tmpfile TMPM   .m
3974 tmpfile TMPO   .o
3975 tmpfile TMPS   .S
3976 tmpfile TMPSH  .sh
3977 tmpfile TMPV   .ver
3978
3979 unset -f mktemp
3980
3981 chmod +x $TMPE
3982
3983 # make sure we can execute files in $TMPDIR
3984 cat > $TMPSH 2>> $logfile <<EOF
3985 #! /bin/sh
3986 EOF
3987 chmod +x $TMPSH >> $logfile 2>&1
3988 if ! $TMPSH >> $logfile 2>&1; then
3989     cat <<EOF
3990 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3991 variable to another directory and make sure that it is not mounted noexec.
3992 EOF
3993     die "Sanity test failed."
3994 fi
3995
3996 armasm_flags(){
3997     for flag; do
3998         case $flag in
3999             # Filter out MSVC cl.exe options from cflags that shouldn't
4000             # be passed to gas-preprocessor
4001             -M[TD]*)                                            ;;
4002             *)                  echo $flag                      ;;
4003         esac
4004    done
4005 }
4006
4007 cparser_flags(){
4008     for flag; do
4009         case $flag in
4010             -Wno-switch)             echo -Wno-switch-enum ;;
4011             -Wno-format-zero-length) ;;
4012             -Wdisabled-optimization) ;;
4013             -Wno-pointer-sign)       echo -Wno-other ;;
4014             *)                       echo $flag ;;
4015         esac
4016     done
4017 }
4018
4019 msvc_common_flags(){
4020     for flag; do
4021         case $flag in
4022             # In addition to specifying certain flags under the compiler
4023             # specific filters, they must be specified here as well or else the
4024             # generic catch all at the bottom will print the original flag.
4025             -Wall)                ;;
4026             -Wextra)              ;;
4027             -std=c99)             ;;
4028             # Common flags
4029             -fomit-frame-pointer) ;;
4030             -g)                   echo -Z7 ;;
4031             -fno-math-errno)      ;;
4032             -fno-common)          ;;
4033             -fno-signed-zeros)    ;;
4034             -fPIC)                ;;
4035             -mthumb)              ;;
4036             -march=*)             ;;
4037             -lz)                  echo zlib.lib ;;
4038             -lx264)               echo libx264.lib ;;
4039             -lstdc++)             ;;
4040             -l*)                  echo ${flag#-l}.lib ;;
4041             -LARGEADDRESSAWARE)   echo $flag ;;
4042             -L*)                  echo -libpath:${flag#-L} ;;
4043             *)                    echo $flag ;;
4044         esac
4045     done
4046 }
4047
4048 msvc_flags(){
4049     msvc_common_flags "$@"
4050     for flag; do
4051         case $flag in
4052             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4053                                        -wd4554 ;;
4054             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4055                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4056                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4057                                        -wd4307 \
4058                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4059         esac
4060     done
4061 }
4062
4063 icl_flags(){
4064     msvc_common_flags "$@"
4065     for flag; do
4066         case $flag in
4067             # Despite what Intel's documentation says -Wall, which is supported
4068             # on Windows, does enable remarks so disable them here.
4069             -Wall)                echo $flag -Qdiag-disable:remark ;;
4070             -std=c99)             echo -Qstd=c99 ;;
4071             -flto)                echo -ipo ;;
4072         esac
4073     done
4074 }
4075
4076 icc_flags(){
4077     for flag; do
4078         case $flag in
4079             -flto)                echo -ipo ;;
4080             *)                    echo $flag ;;
4081         esac
4082     done
4083 }
4084
4085 suncc_flags(){
4086     for flag; do
4087         case $flag in
4088             -march=*|-mcpu=*)
4089                 case "${flag#*=}" in
4090                     native)                   echo -xtarget=native       ;;
4091                     v9|niagara)               echo -xarch=sparc          ;;
4092                     ultrasparc)               echo -xarch=sparcvis       ;;
4093                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4094                     i586|pentium)             echo -xchip=pentium        ;;
4095                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4096                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4097                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4098                     pentium4*)          echo -xtarget=pentium4           ;;
4099                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4100                     *-sse3)             echo -xarch=sse3                 ;;
4101                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4102                     bonnell)                   echo -xarch=ssse3         ;;
4103                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4104                     westmere)                  echo -xtarget=westmere    ;;
4105                     silvermont)                echo -xarch=sse4_2        ;;
4106                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4107                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4108                                                echo -xarch=avx           ;;
4109                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4110                     btver1)                    echo -xarch=amdsse4a      ;;
4111                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4112                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4113                     k8|opteron|athlon64|athlon-fx)
4114                                                echo -xarch=sse2a         ;;
4115                     athlon*)                   echo -xarch=pentium_proa  ;;
4116                 esac
4117                 ;;
4118             -std=c99)             echo -xc99              ;;
4119             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4120             -fPIC)                echo -KPIC -xcode=pic32 ;;
4121             -W*,*)                echo $flag              ;;
4122             -f*-*|-W*|-mimpure-text)                      ;;
4123             -shared)              echo -G                 ;;
4124             *)                    echo $flag              ;;
4125         esac
4126     done
4127 }
4128
4129 probe_cc(){
4130     pfx=$1
4131     _cc=$2
4132     first=$3
4133
4134     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4135     unset _ld_o _ldflags _ld_lib _ld_path
4136     unset _depflags _DEPCMD _DEPFLAGS
4137     _flags_filter=echo
4138
4139     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4140         true # no-op to avoid reading stdin in following checks
4141     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4142         _type=llvm_gcc
4143         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4144         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4145         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4146         _cflags_speed='-O3'
4147         _cflags_size='-Os'
4148     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4149         _type=gcc
4150         gcc_version=$($_cc --version | head -n1)
4151         gcc_basever=$($_cc -dumpversion)
4152         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4153         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4154         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4155         case $gcc_basever in
4156             2) ;;
4157             2.*) ;;
4158             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4159         esac
4160         if [ "$first" = true ]; then
4161             case $gcc_basever in
4162                 4.2*)
4163                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4164             esac
4165         fi
4166         _cflags_speed='-O3'
4167         _cflags_size='-Os'
4168     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4169         _type=icc
4170         _ident=$($_cc --version | head -n1)
4171         _depflags='-MMD'
4172         _cflags_speed='-O3'
4173         _cflags_size='-Os'
4174         _cflags_noopt='-O1'
4175         _flags_filter=icc_flags
4176     elif $_cc -v 2>&1 | grep -q xlc; then
4177         _type=xlc
4178         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4179         _cflags_speed='-O5'
4180         _cflags_size='-O5 -qcompact'
4181     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4182         test -d "$sysroot" || die "No valid sysroot specified."
4183         _type=armcc
4184         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4185         armcc_conf="$PWD/armcc.conf"
4186         $_cc --arm_linux_configure                 \
4187              --arm_linux_config_file="$armcc_conf" \
4188              --configure_sysroot="$sysroot"        \
4189              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4190              die "Error creating armcc configuration file."
4191         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4192         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4193         as_default="${cross_prefix}gcc"
4194         _depflags='-MMD'
4195         _cflags_speed='-O3'
4196         _cflags_size='-Os'
4197     elif $_cc -v 2>&1 | grep -q clang; then
4198         _type=clang
4199         _ident=$($_cc --version 2>/dev/null | head -n1)
4200         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4201         _cflags_speed='-O3'
4202         _cflags_size='-Oz'
4203     elif $_cc -V 2>&1 | grep -q Sun; then
4204         _type=suncc
4205         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4206         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4207         _DEPFLAGS='-xM1 -xc99'
4208         _ldflags='-std=c99'
4209         _cflags_speed='-O5'
4210         _cflags_size='-O5 -xspace'
4211         _flags_filter=suncc_flags
4212     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4213         _type=pathscale
4214         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4215         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4216         _cflags_speed='-O2'
4217         _cflags_size='-Os'
4218         _flags_filter='filter_out -Wdisabled-optimization'
4219     elif $_cc -v 2>&1 | grep -q Open64; then
4220         _type=open64
4221         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4222         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4223         _cflags_speed='-O2'
4224         _cflags_size='-Os'
4225         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4226     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4227         _type=armasm
4228         _ident=$($_cc | head -n1)
4229         # 4509: "This form of conditional instruction is deprecated"
4230         _flags="-nologo -ignore 4509"
4231         _flags_filter=armasm_flags
4232     elif $_cc 2>&1 | grep -q Intel; then
4233         _type=icl
4234         _ident=$($_cc 2>&1 | head -n1)
4235         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4236         # Not only is O3 broken on 13.x+ but it is slower on all previous
4237         # versions (tested) as well.
4238         _cflags_speed="-O2"
4239         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4240         if $_cc 2>&1 | grep -q Linker; then
4241             _ld_o='-out:$@'
4242         else
4243             _ld_o='-Fe$@'
4244         fi
4245         _cc_o='-Fo$@'
4246         _cc_e='-P'
4247         _flags_filter=icl_flags
4248         _ld_lib='lib%.a'
4249         _ld_path='-libpath:'
4250         # -Qdiag-error to make icl error when seeing certain unknown arguments
4251         _flags='-nologo -Qdiag-error:4044,10157'
4252         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4253         # with MSVC which enables it by default.
4254         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4255         disable stripping
4256     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4257         # lld can emulate multiple different linkers; in ms link.exe mode,
4258         # the -? parameter gives the help output which contains an identifyable
4259         # string, while it gives an error in other modes.
4260         _type=lld-link
4261         # The link.exe mode doesn't have a switch for getting the version,
4262         # but we can force it back to gnu mode and get the version from there.
4263         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4264         _ld_o='-out:$@'
4265         _flags_filter=msvc_flags
4266         _ld_lib='lib%.a'
4267         _ld_path='-libpath:'
4268     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4269         _type=msvc
4270         _ident=$($_cc 2>&1 | head -n1)
4271         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4272         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4273         _cflags_speed="-O2"
4274         _cflags_size="-O1"
4275         _cflags_noopt="-O1"
4276         if $_cc -nologo- 2>&1 | grep -q Linker; then
4277             _ld_o='-out:$@'
4278         else
4279             _ld_o='-Fe$@'
4280         fi
4281         _cc_o='-Fo$@'
4282         _cc_e='-P -Fi$@'
4283         _flags_filter=msvc_flags
4284         _ld_lib='lib%.a'
4285         _ld_path='-libpath:'
4286         _flags='-nologo'
4287         disable stripping
4288     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4289         _type=cparser
4290         _ident=$($_cc --version | head -n1)
4291         _depflags='-MMD'
4292         _cflags_speed='-O4'
4293         _cflags_size='-O2'
4294         _flags_filter=cparser_flags
4295     fi
4296
4297     eval ${pfx}_type=\$_type
4298     eval ${pfx}_ident=\$_ident
4299 }
4300
4301 set_ccvars(){
4302     eval ${1}_C=\${_cc_c-\${${1}_C}}
4303     eval ${1}_E=\${_cc_e-\${${1}_E}}
4304     eval ${1}_O=\${_cc_o-\${${1}_O}}
4305
4306     if [ -n "$_depflags" ]; then
4307         eval ${1}_DEPFLAGS=\$_depflags
4308     else
4309         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4310         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4311         eval DEP${1}FLAGS=\$_flags
4312     fi
4313 }
4314
4315 probe_cc cc "$cc" "true"
4316 cflags_filter=$_flags_filter
4317 cflags_speed=$_cflags_speed
4318 cflags_size=$_cflags_size
4319 cflags_noopt=$_cflags_noopt
4320 add_cflags $_flags $_cflags
4321 cc_ldflags=$_ldflags
4322 set_ccvars CC
4323 set_ccvars CXX
4324
4325 probe_cc hostcc "$host_cc"
4326 host_cflags_filter=$_flags_filter
4327 host_cflags_speed=$_cflags_speed
4328 add_host_cflags  $_flags $_cflags
4329 set_ccvars HOSTCC
4330
4331 test -n "$cc_type" && enable $cc_type ||
4332     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4333
4334 : ${as_default:=$cc}
4335 : ${objcc_default:=$cc}
4336 : ${dep_cc_default:=$cc}
4337 : ${ld_default:=$cc}
4338 : ${host_ld_default:=$host_cc}
4339 set_default ar as objcc dep_cc ld ln_s host_ld windres
4340
4341 probe_cc as "$as"
4342 asflags_filter=$_flags_filter
4343 add_asflags $_flags $_cflags
4344 set_ccvars AS
4345
4346 probe_cc objcc "$objcc"
4347 objcflags_filter=$_flags_filter
4348 add_objcflags $_flags $_cflags
4349 set_ccvars OBJC
4350
4351 probe_cc ld "$ld"
4352 ldflags_filter=$_flags_filter
4353 add_ldflags $_flags $_ldflags
4354 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4355 LD_O=${_ld_o-$LD_O}
4356 LD_LIB=${_ld_lib-$LD_LIB}
4357 LD_PATH=${_ld_path-$LD_PATH}
4358
4359 probe_cc hostld "$host_ld"
4360 host_ldflags_filter=$_flags_filter
4361 add_host_ldflags $_flags $_ldflags
4362 HOSTLD_O=${_ld_o-$HOSTLD_O}
4363
4364 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4365     probe_cc depcc "$dep_cc"
4366     CCDEP=${_DEPCMD:-$DEPCMD}
4367     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4368     DEPCCFLAGS=$_flags
4369 fi
4370
4371 if $ar 2>&1 | grep -q Microsoft; then
4372     arflags="-nologo"
4373     ar_o='-out:$@'
4374 elif $ar 2>&1 | grep -q "\[D\] "; then
4375     arflags="rcD"
4376     ar_o='$@'
4377 else
4378     arflags="rc"
4379     ar_o='$@'
4380 fi
4381
4382 add_cflags $extra_cflags
4383 add_cxxflags $extra_cxxflags
4384 add_objcflags $extra_objcflags
4385 add_asflags $extra_cflags
4386
4387 if test -n "$sysroot"; then
4388     case "$cc_type" in
4389         gcc|llvm_gcc|clang)
4390             add_cppflags --sysroot="$sysroot"
4391             add_ldflags --sysroot="$sysroot"
4392         ;;
4393     esac
4394 fi
4395
4396 if test "$cpu" = host; then
4397     enabled cross_compile &&
4398         die "--cpu=host makes no sense when cross-compiling."
4399
4400     case "$cc_type" in
4401         gcc|llvm_gcc)
4402             check_native(){
4403                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4404                 sed -n "/cc1.*$1=/{
4405                             s/.*$1=\\([^ ]*\\).*/\\1/
4406                             p
4407                             q
4408                         }" $TMPE
4409             }
4410             cpu=$(check_native -march || check_native -mcpu)
4411         ;;
4412         clang)
4413             check_native(){
4414                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4415                 sed -n "/cc1.*-target-cpu /{
4416                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4417                             p
4418                             q
4419                         }" $TMPE
4420             }
4421             cpu=$(check_native -march)
4422         ;;
4423     esac
4424
4425     test "${cpu:-host}" = host &&
4426         die "--cpu=host not supported with compiler $cc"
4427 fi
4428
4429 # Deal with common $arch aliases
4430 case "$arch" in
4431     aarch64|arm64)
4432         arch="aarch64"
4433     ;;
4434     arm*|iPad*|iPhone*)
4435         arch="arm"
4436     ;;
4437     mips*|IP*)
4438         case "$arch" in
4439         *el)
4440             add_cppflags -EL
4441             add_ldflags -EL
4442         ;;
4443         *eb)
4444             add_cppflags -EB
4445             add_ldflags -EB
4446         ;;
4447         esac
4448         arch="mips"
4449     ;;
4450     parisc*|hppa*)
4451         arch="parisc"
4452     ;;
4453     "Power Macintosh"|ppc*|powerpc*)
4454         arch="ppc"
4455     ;;
4456     s390|s390x)
4457         arch="s390"
4458     ;;
4459     sh4|sh)
4460         arch="sh4"
4461     ;;
4462     sun4*|sparc*)
4463         arch="sparc"
4464     ;;
4465     tilegx|tile-gx)
4466         arch="tilegx"
4467     ;;
4468     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4469         arch="x86"
4470     ;;
4471 esac
4472
4473 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4474 enable $arch
4475
4476 # Add processor-specific flags
4477 if enabled aarch64; then
4478
4479     case $cpu in
4480         armv*)
4481             cpuflags="-march=$cpu"
4482         ;;
4483         *)
4484             cpuflags="-mcpu=$cpu"
4485         ;;
4486     esac
4487
4488 elif enabled alpha; then
4489
4490     cpuflags="-mcpu=$cpu"
4491
4492 elif enabled arm; then
4493
4494     check_arm_arch() {
4495         check_cpp_condition stddef.h \
4496             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4497             $cpuflags
4498     }
4499
4500     probe_arm_arch() {
4501         if   check_arm_arch 4;        then echo armv4
4502         elif check_arm_arch 4T;       then echo armv4t
4503         elif check_arm_arch 5;        then echo armv5
4504         elif check_arm_arch 5E;       then echo armv5e
4505         elif check_arm_arch 5T;       then echo armv5t
4506         elif check_arm_arch 5TE;      then echo armv5te
4507         elif check_arm_arch 5TEJ;     then echo armv5te
4508         elif check_arm_arch 6;        then echo armv6
4509         elif check_arm_arch 6J;       then echo armv6j
4510         elif check_arm_arch 6K;       then echo armv6k
4511         elif check_arm_arch 6Z;       then echo armv6z
4512         elif check_arm_arch 6ZK;      then echo armv6zk
4513         elif check_arm_arch 6T2;      then echo armv6t2
4514         elif check_arm_arch 7;        then echo armv7
4515         elif check_arm_arch 7A  7_A;  then echo armv7-a
4516         elif check_arm_arch 7S;       then echo armv7-a
4517         elif check_arm_arch 7R  7_R;  then echo armv7-r
4518         elif check_arm_arch 7M  7_M;  then echo armv7-m
4519         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4520         elif check_arm_arch 8A  8_A;  then echo armv8-a
4521         fi
4522     }
4523
4524     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4525
4526     case $cpu in
4527         armv*)
4528             cpuflags="-march=$cpu"
4529             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4530         ;;
4531         *)
4532             cpuflags="-mcpu=$cpu"
4533             case $cpu in
4534                 cortex-a*)                               subarch=armv7a  ;;
4535                 cortex-r*)                               subarch=armv7r  ;;
4536                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4537                 arm11*)                                  subarch=armv6   ;;
4538                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4539                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4540                 *)                             subarch=$(probe_arm_arch) ;;
4541             esac
4542         ;;
4543     esac
4544
4545     case "$subarch" in
4546         armv5t*)    enable fast_clz                ;;
4547         armv[6-8]*)
4548             enable fast_clz
4549             disabled fast_unaligned || enable fast_unaligned
4550             ;;
4551     esac
4552
4553 elif enabled avr32; then
4554
4555     case $cpu in
4556         ap7[02]0[0-2])
4557             subarch="avr32_ap"
4558             cpuflags="-mpart=$cpu"
4559         ;;
4560         ap)
4561             subarch="avr32_ap"
4562             cpuflags="-march=$cpu"
4563         ;;
4564         uc3[ab]*)
4565             subarch="avr32_uc"
4566             cpuflags="-mcpu=$cpu"
4567         ;;
4568         uc)
4569             subarch="avr32_uc"
4570             cpuflags="-march=$cpu"
4571         ;;
4572     esac
4573
4574 elif enabled bfin; then
4575
4576     cpuflags="-mcpu=$cpu"
4577
4578 elif enabled mips; then
4579
4580     cpuflags="-march=$cpu"
4581
4582     if [ "$cpu" != "generic" ]; then
4583         disable mips32r2
4584         disable mips32r5
4585         disable mips64r2
4586         disable mips32r6
4587         disable mips64r6
4588         disable loongson2
4589         disable loongson3
4590
4591         case $cpu in
4592             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4593                 enable mips32r2
4594                 disable msa
4595             ;;
4596             p5600|i6400|p6600)
4597                 disable mipsdsp
4598                 disable mipsdspr2
4599             ;;
4600             loongson*)
4601                 enable loongson2
4602                 enable loongson3
4603                 enable local_aligned
4604                 enable simd_align_16
4605                 enable fast_64bit
4606                 enable fast_clz
4607                 enable fast_cmov
4608                 enable fast_unaligned
4609                 disable aligned_stack
4610                 disable mipsfpu
4611                 disable mipsdsp
4612                 disable mipsdspr2
4613                 case $cpu in
4614                     loongson3*)
4615                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4616                     ;;
4617                     loongson2e)
4618                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4619                     ;;
4620                     loongson2f)
4621                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4622                     ;;
4623                 esac
4624             ;;
4625             *)
4626                 # Unknown CPU. Disable everything.
4627                 warn "unknown CPU. Disabling all MIPS optimizations."
4628                 disable mipsfpu
4629                 disable mipsdsp
4630                 disable mipsdspr2
4631                 disable msa
4632                 disable mmi
4633             ;;
4634         esac
4635
4636         case $cpu in
4637             24kc)
4638                 disable mipsfpu
4639                 disable mipsdsp
4640                 disable mipsdspr2
4641             ;;
4642             24kf*)
4643                 disable mipsdsp
4644                 disable mipsdspr2
4645             ;;
4646             24kec|34kc|1004kc)
4647                 disable mipsfpu
4648                 disable mipsdspr2
4649             ;;
4650             24kef*|34kf*|1004kf*)
4651                 disable mipsdspr2
4652             ;;
4653             74kc)
4654                 disable mipsfpu
4655             ;;
4656             p5600)
4657                 enable mips32r5
4658                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4659             ;;
4660             i6400)
4661                 enable mips64r6
4662                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4663             ;;
4664             p6600)
4665                 enable mips64r6
4666                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4667             ;;
4668         esac
4669     else
4670         # We do not disable anything. Is up to the user to disable the unwanted features.
4671         warn 'generic cpu selected'
4672     fi
4673
4674 elif enabled ppc; then
4675
4676     disable ldbrx
4677
4678     case $(tolower $cpu) in
4679         601|ppc601|powerpc601)
4680             cpuflags="-mcpu=601"
4681             disable altivec
4682         ;;
4683         603*|ppc603*|powerpc603*)
4684             cpuflags="-mcpu=603"
4685             disable altivec
4686         ;;
4687         604*|ppc604*|powerpc604*)
4688             cpuflags="-mcpu=604"
4689             disable altivec
4690         ;;
4691         g3|75*|ppc75*|powerpc75*)
4692             cpuflags="-mcpu=750"
4693             disable altivec
4694         ;;
4695         g4|745*|ppc745*|powerpc745*)
4696             cpuflags="-mcpu=7450"
4697             disable vsx
4698         ;;
4699         74*|ppc74*|powerpc74*)
4700             cpuflags="-mcpu=7400"
4701             disable vsx
4702         ;;
4703         g5|970|ppc970|powerpc970)
4704             cpuflags="-mcpu=970"
4705             disable vsx
4706         ;;
4707         power[3-6]*)
4708             cpuflags="-mcpu=$cpu"
4709             disable vsx
4710         ;;
4711         power[7-8]*)
4712             cpuflags="-mcpu=$cpu"
4713         ;;
4714         cell)
4715             cpuflags="-mcpu=cell"
4716             enable ldbrx
4717             disable vsx
4718         ;;
4719         e500mc)
4720             cpuflags="-mcpu=e500mc"
4721             disable altivec
4722         ;;
4723         e500v2)
4724             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4725             disable altivec
4726             disable dcbzl
4727         ;;
4728         e500)
4729             cpuflags="-mcpu=8540 -mhard-float"
4730             disable altivec
4731             disable dcbzl
4732         ;;
4733     esac
4734
4735 elif enabled sparc; then
4736
4737     case $cpu in
4738         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4739             cpuflags="-mcpu=$cpu"
4740         ;;
4741         ultrasparc*|niagara[234])
4742             cpuflags="-mcpu=$cpu"
4743         ;;
4744     esac
4745
4746 elif enabled x86; then
4747
4748     case $cpu in
4749         i[345]86|pentium)
4750             cpuflags="-march=$cpu"
4751             disable i686
4752             disable mmx
4753         ;;
4754         # targets that do NOT support nopl and conditional mov (cmov)
4755         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4756             cpuflags="-march=$cpu"
4757             disable i686
4758         ;;
4759         # targets that do support nopl and conditional mov (cmov)
4760         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4761         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4762         |amdfam10|barcelona|b[dt]ver*|znver*)
4763             cpuflags="-march=$cpu"
4764             enable i686
4765             enable fast_cmov
4766         ;;
4767         # targets that do support conditional mov but on which it's slow
4768         pentium4|pentium4m|prescott|nocona)
4769             cpuflags="-march=$cpu"
4770             enable i686
4771             disable fast_cmov
4772         ;;
4773     esac
4774
4775 fi
4776
4777 if [ "$cpu" != generic ]; then
4778     add_cflags  $cpuflags
4779     add_asflags $cpuflags
4780     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4781 fi
4782
4783 # compiler sanity check
4784 check_exec <<EOF
4785 int main(void){ return 0; }
4786 EOF
4787 if test "$?" != 0; then
4788     echo "$cc is unable to create an executable file."
4789     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4790         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4791         echo "Only do this if you know what cross compiling means."
4792     fi
4793     die "C compiler test failed."
4794 fi
4795
4796 add_cppflags -D_ISOC99_SOURCE
4797 add_cxxflags -D__STDC_CONSTANT_MACROS
4798 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4799
4800 # some compilers silently accept -std=c11, so we also need to check that the
4801 # version macro is defined properly
4802 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4803     add_cflags -std=c11 ||
4804     check_cflags -std=c99
4805
4806 check_cppflags -D_FILE_OFFSET_BITS=64
4807 check_cppflags -D_LARGEFILE_SOURCE
4808
4809 add_host_cppflags -D_ISOC99_SOURCE
4810 check_host_cflags -std=c99
4811 check_host_cflags -Wall
4812 check_host_cflags $host_cflags_speed
4813
4814 check_64bit(){
4815     arch32=$1
4816     arch64=$2
4817     expr=$3
4818     check_code cc "" "int test[2*($expr) - 1]" &&
4819         subarch=$arch64 || subarch=$arch32
4820 }
4821
4822 case "$arch" in
4823     aarch64|alpha|ia64)
4824         spic=$shared
4825     ;;
4826     mips)
4827         check_64bit mips mips64 '_MIPS_SIM > 1'
4828         spic=$shared
4829     ;;
4830     parisc)
4831         check_64bit parisc parisc64 'sizeof(void *) > 4'
4832         spic=$shared
4833     ;;
4834     ppc)
4835         check_64bit ppc ppc64 'sizeof(void *) > 4'
4836         spic=$shared
4837     ;;
4838     s390)
4839         check_64bit s390 s390x 'sizeof(void *) > 4'
4840         spic=$shared
4841     ;;
4842     sparc)
4843         check_64bit sparc sparc64 'sizeof(void *) > 4'
4844         spic=$shared
4845     ;;
4846     x86)
4847         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4848         # Treat x32 as x64 for now. Note it also needs spic=$shared
4849         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4850             subarch=x86_64
4851         if test "$subarch" = "x86_64"; then
4852             spic=$shared
4853         fi
4854     ;;
4855     ppc)
4856         check_cc <<EOF && subarch="ppc64"
4857         int test[(int)sizeof(char*) - 7];
4858 EOF
4859     ;;
4860 esac
4861
4862 enable $subarch
4863 enabled spic && enable_weak pic
4864
4865 enabled x86_64 && objformat=elf64 || objformat="elf32"
4866
4867 # OS specific
4868 case $target_os in
4869     aix)
4870         SHFLAGS=-shared
4871         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4872         enabled shared && add_ldflags -Wl,-brtl
4873         arflags='-Xany -r -c'
4874         ;;
4875     android)
4876         disable symver
4877         enable section_data_rel_ro
4878         SLIB_INSTALL_NAME='$(SLIBNAME)'
4879         SLIB_INSTALL_LINKS=
4880         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4881         ;;
4882     haiku)
4883         prefix_default="/boot/common"
4884         network_extralibs="-lnetwork"
4885         host_extralibs=
4886         ;;
4887     sunos)
4888         SHFLAGS='-shared -Wl,-h,$$(@F)'
4889         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4890         network_extralibs="-lsocket -lnsl"
4891         add_cppflags -D__EXTENSIONS__
4892         # When using suncc to build, the Solaris linker will mark
4893         # an executable with each instruction set encountered by
4894         # the Solaris assembler.  As our libraries contain their own
4895         # guards for processor-specific code, instead suppress
4896         # generation of the HWCAPS ELF section on Solaris x86 only.
4897         enabled_all suncc x86 &&
4898             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4899             add_ldflags -Wl,-M,mapfile
4900         nm_default='nm -P -g'
4901         version_script='-M'
4902         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4903         ;;
4904     netbsd)
4905         disable symver
4906         oss_indev_extralibs="-lossaudio"
4907         oss_outdev_extralibs="-lossaudio"
4908         enabled gcc || check_ldflags -Wl,-zmuldefs
4909         ;;
4910     openbsd|bitrig)
4911         disable symver
4912         SHFLAGS='-shared'
4913         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4914         SLIB_INSTALL_LINKS=
4915         oss_indev_extralibs="-lossaudio"
4916         oss_outdev_extralibs="-lossaudio"
4917         ;;
4918     dragonfly)
4919         disable symver
4920         ;;
4921     freebsd)
4922         ;;
4923     bsd/os)
4924         add_extralibs -lpoll -lgnugetopt
4925         strip="strip -d"
4926         ;;
4927     darwin)
4928         enabled ppc && add_asflags -force_cpusubtype_ALL
4929         install_name_dir_default='$(SHLIBDIR)'
4930         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4931         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4932         strip="${strip} -x"
4933         add_ldflags -Wl,-dynamic,-search_paths_first
4934         check_cflags -Werror=partial-availability
4935         SLIBSUF=".dylib"
4936         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4937         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4938         enabled x86_64 && objformat="macho64" || objformat="macho32"
4939         enabled_any pic shared x86_64 ||
4940             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4941         check_header dispatch/dispatch.h &&
4942             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4943         if test -n "$sysroot"; then
4944             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4945             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4946         fi
4947         version_script='-exported_symbols_list'
4948         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4949         ;;
4950     msys*)
4951         die "Native MSYS builds are discouraged, please use the MINGW environment."
4952         ;;
4953     mingw32*|mingw64*)
4954         target_os=mingw32
4955         if enabled shared; then
4956             # Cannot build both shared and static libs when using dllexport.
4957             disable static
4958         fi
4959         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4960         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4961         shlibdir_default="$bindir_default"
4962         SLIBPREF=""
4963         SLIBSUF=".dll"
4964         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4965         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4966         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4967         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4968         SLIB_INSTALL_LINKS=
4969         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4970         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4971         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4972         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4973         enabled x86_64 && objformat="win64" || objformat="win32"
4974         ranlib=:
4975         enable dos_paths
4976         check_ldflags -Wl,--nxcompat,--dynamicbase
4977         # Lets work around some stupidity in binutils.
4978         # ld will strip relocations from executables even though we need them
4979         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4980         # however ld then forgets what the entry point should be (oops) so we
4981         # have to manually (re)set it.
4982         if enabled x86_32; then
4983             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4984         elif enabled x86_64; then
4985             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4986             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4987             # Set image base >4GB for extra entropy with HEASLR
4988             add_ldexeflags -Wl,--image-base,0x140000000
4989             append SHFLAGS -Wl,--image-base,0x180000000
4990         fi
4991         ;;
4992     win32|win64)
4993         disable symver
4994         if enabled shared; then
4995             # Link to the import library instead of the normal static library
4996             # for shared libs.
4997             LD_LIB='%.lib'
4998             # Cannot build both shared and static libs with MSVC or icl.
4999             disable static
5000         fi
5001         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5002         shlibdir_default="$bindir_default"
5003         SLIBPREF=""
5004         SLIBSUF=".dll"
5005         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5006         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5007         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5008         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5009         SLIB_INSTALL_LINKS=
5010         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5011         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5012         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5013         enabled x86_64 && objformat="win64" || objformat="win32"
5014         ranlib=:
5015         enable dos_paths
5016         ;;
5017     cygwin*)
5018         target_os=cygwin
5019         shlibdir_default="$bindir_default"
5020         SLIBPREF="cyg"
5021         SLIBSUF=".dll"
5022         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5023         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5024         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5025         SLIB_INSTALL_LINKS=
5026         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5027         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5028         enabled x86_64 && objformat="win64" || objformat="win32"
5029         enable dos_paths
5030         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5031         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5032         ;;
5033     *-dos|freedos|opendos)
5034         network_extralibs="-lsocket"
5035         objformat="coff"
5036         enable dos_paths
5037         add_cppflags -U__STRICT_ANSI__
5038         ;;
5039     linux)
5040         enable section_data_rel_ro
5041         enabled_any arm aarch64 && enable_weak linux_perf
5042         ;;
5043     irix*)
5044         target_os=irix
5045         ranlib="echo ignoring ranlib"
5046         ;;
5047     os/2*)
5048         strip="lxlite -CS"
5049         striptype=""
5050         objformat="aout"
5051         add_cppflags -D_GNU_SOURCE
5052         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5053         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5054         LIBSUF="_s.a"
5055         SLIBPREF=""
5056         SLIBSUF=".dll"
5057         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5058         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5059         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5060             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5061             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5062             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5063             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5064         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5065             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5066         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5067         SLIB_INSTALL_LINKS=
5068         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5069         enable dos_paths
5070         enable_weak os2threads
5071         ;;
5072     gnu/kfreebsd)
5073         add_cppflags -D_BSD_SOURCE
5074         ;;
5075     gnu)
5076         ;;
5077     qnx)
5078         add_cppflags -D_QNX_SOURCE
5079         network_extralibs="-lsocket"
5080         ;;
5081     symbian)
5082         SLIBSUF=".dll"
5083         enable dos_paths
5084         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5085         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5086         add_ldflags -Wl,--target1-abs,--no-undefined \
5087                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5088                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5089         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5090                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5091                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5092         ;;
5093     minix)
5094         ;;
5095     none)
5096         ;;
5097     *)
5098         die "Unknown OS '$target_os'."
5099         ;;
5100 esac
5101
5102 # test if creating links works
5103 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5104 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5105 mkdir "$link_dest"
5106 $ln_s "$link_dest" "$link_name"
5107 touch "$link_dest/test_file"
5108 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5109     # create link to source path
5110     [ -e src ] && rm src
5111     $ln_s "$source_path" src
5112     source_link=src
5113 else
5114     # creating directory links doesn't work
5115     # fall back to using the full source path
5116     source_link="$source_path"
5117 fi
5118 # cleanup
5119 rm -r "$link_dest"
5120 rm -r "$link_name"
5121
5122 # determine libc flavour
5123
5124 probe_libc(){
5125     pfx=$1
5126     pfx_no_=${pfx%_}
5127     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5128     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5129         eval ${pfx}libc_type=uclibc
5130         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5131     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5132         eval ${pfx}libc_type=glibc
5133         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5134     # MinGW headers can be installed on Cygwin, so check for newlib first.
5135     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5136         eval ${pfx}libc_type=newlib
5137         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5138     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5139     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5140         eval ${pfx}libc_type=mingw64
5141         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5142             add_compat msvcrt/snprintf.o
5143             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5144         fi
5145         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5146         eval test \$${pfx_no_}cc_type = "gcc" &&
5147             add_${pfx}cppflags -D__printf__=__gnu_printf__
5148     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5149          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5150         eval ${pfx}libc_type=mingw32
5151         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5152             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5153             die "ERROR: MinGW32 runtime version must be >= 3.15."
5154         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5155         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5156             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5157         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5158             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5159         eval test \$${pfx_no_}cc_type = "gcc" &&
5160             add_${pfx}cppflags -D__printf__=__gnu_printf__
5161     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5162         eval ${pfx}libc_type=msvcrt
5163         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5164             if [ "$pfx" = host_ ]; then
5165                 add_host_cppflags -Dsnprintf=_snprintf
5166             else
5167                 add_compat strtod.o strtod=avpriv_strtod
5168                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5169                                              _snprintf=avpriv_snprintf  \
5170                                              vsnprintf=avpriv_vsnprintf
5171             fi
5172         fi
5173         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5174         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5175         # 0x601 by default unless something else is set by the user.
5176         # This can easily lead to us detecting functions only present
5177         # in such new versions and producing binaries requiring windows 7.0.
5178         # Therefore explicitly set the default to XP unless the user has
5179         # set something else on the command line.
5180         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5181         # family. For these cases, configure is free to use any functions
5182         # found in the SDK headers by default. (Alternatively, we could force
5183         # _WIN32_WINNT to 0x0602 in that case.)
5184         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5185             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5186 #ifdef WINAPI_FAMILY
5187 #include <winapifamily.h>
5188 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5189 #error not desktop
5190 #endif
5191 #endif
5192 EOF
5193         if [ "$pfx" = "" ]; then
5194             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5195             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5196         fi
5197     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5198         eval ${pfx}libc_type=klibc
5199     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5200         eval ${pfx}libc_type=bionic
5201     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5202         eval ${pfx}libc_type=solaris
5203         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5204     fi
5205     check_${pfx}cc <<EOF
5206 #include <time.h>
5207 void *v = localtime_r;
5208 EOF
5209 test "$?" != 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
5210 #include <time.h>
5211 void *v = localtime_r;
5212 EOF
5213
5214     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5215 }
5216
5217 probe_libc
5218 probe_libc host_
5219
5220 # hacks for compiler/libc/os combinations
5221
5222 case $libc_type in
5223     bionic)
5224         add_compat strtod.o strtod=avpriv_strtod
5225         ;;
5226 esac
5227
5228 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5229     add_cppflags '-I\$(SRC_PATH)/compat/float'
5230
5231 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5232
5233 set_default libdir
5234 : ${shlibdir_default:="$libdir"}
5235 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5236
5237 set_default $PATHS_LIST
5238 set_default nm
5239
5240 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5241
5242 enable_weak_pic() {
5243     disabled pic && return
5244     enable pic
5245     add_cppflags -DPIC
5246     case "$target_os" in
5247     mingw*|cygwin*|win*)
5248         ;;
5249     *)
5250         add_cflags -fPIC
5251         add_asflags -fPIC
5252         ;;
5253     esac
5254 }
5255
5256 enabled pic && enable_weak_pic
5257
5258 check_cc <<EOF || die "Symbol mangling check failed."
5259 int ff_extern;
5260 EOF
5261 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5262 extern_prefix=${sym%%ff_extern*}
5263
5264 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5265
5266 _restrict=
5267 for restrict_keyword in restrict __restrict__ __restrict; do
5268     check_cc <<EOF && _restrict=$restrict_keyword && break
5269 void foo(char * $restrict_keyword p);
5270 EOF
5271 done
5272
5273 check_cc <<EOF && enable pragma_deprecated
5274 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5275 EOF
5276
5277 check_cc <<EOF || die "endian test failed"
5278 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5279 EOF
5280 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5281
5282 check_cc <<EOF && enable const_nan
5283 #include <math.h>
5284 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5285 EOF
5286
5287 if ! enabled ppc64 || enabled bigendian; then
5288     disable vsx
5289 fi
5290
5291 check_gas() {
5292     log "check_gas using '$as' as AS"
5293     # :vararg is used on aarch64, arm and ppc altivec
5294     check_as <<EOF || return 1
5295 .macro m n, y:vararg=0
5296 \n: .int \y
5297 .endm
5298 m x
5299 EOF
5300     # .altmacro is only used in arm asm
5301     ! enabled arm || check_as <<EOF || return 1
5302 .altmacro
5303 EOF
5304     enable gnu_as
5305     return 0
5306 }
5307
5308 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5309     nogas=:
5310     enabled_any arm aarch64 && nogas=die
5311     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5312     as_noop=-v
5313
5314     case $as_type in
5315         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5316         gcc)  gaspp_as_type=gas ;;
5317         *)    gaspp_as_type=$as_type ;;
5318     esac
5319
5320     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5321
5322     test "${as#*gas-preprocessor.pl}" != "$as" ||
5323     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5324         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5325
5326     if ! check_gas ; then
5327         as=${gas:=$as}
5328         check_gas || \
5329             $nogas "GNU assembler not found, install/update gas-preprocessor"
5330     fi
5331
5332     check_as <<EOF && enable as_func
5333 .func test
5334 .endfunc
5335 EOF
5336 fi
5337
5338 check_inline_asm inline_asm_labels '"1:\n"'
5339
5340 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5341
5342 if enabled aarch64; then
5343     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5344     # internal assembler in clang 3.3 does not support this instruction
5345     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5346     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5347
5348     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5349
5350 elif enabled alpha; then
5351
5352     check_cflags -mieee
5353
5354 elif enabled arm; then
5355
5356     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5357
5358     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5359 float func(float a, float b){ return a+b; }
5360 EOF
5361
5362     enabled thumb && check_cflags -mthumb || check_cflags -marm
5363
5364     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5365         enable vfp_args
5366     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5367         enable vfp_args
5368     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5369         case "${cross_prefix:-$cc}" in
5370             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5371             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5372 __asm__ (".eabi_attribute 28, 1");
5373 int main(void) { return 0; }
5374 EOF
5375         esac
5376         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5377     fi
5378
5379     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5380     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5381     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5382     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5383     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5384     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5385     enabled setend  && check_insn setend  'setend be'
5386
5387     [ $target_os = linux ] || [ $target_os = android ] ||
5388         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5389             $ARCH_EXT_LIST_ARM
5390
5391     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5392
5393     check_as <<EOF && enable as_arch_directive
5394 .arch armv7-a
5395 EOF
5396     check_as <<EOF && enable as_fpu_directive
5397 .fpu neon
5398 EOF
5399
5400     # llvm's integrated assembler supports .object_arch from llvm 3.5
5401     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5402         check_as <<EOF && enable as_object_arch
5403 .object_arch armv4
5404 EOF
5405
5406     # MS armasm fails to assemble our PIC constructs
5407     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5408
5409 elif enabled mips; then
5410
5411     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5412     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5413     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5414
5415     # Enable minimum ISA based on selected options
5416     if enabled mips64; then
5417         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5418         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5419         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5420     else
5421         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5422         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5423         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5424         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5425     fi
5426
5427     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5428     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5429     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5430     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5431     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5432
5433     if enabled bigendian && enabled msa; then
5434         disable msa
5435     fi
5436
5437 elif enabled parisc; then
5438
5439     if enabled gcc; then
5440         case $($cc -dumpversion) in
5441             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5442         esac
5443     fi
5444
5445 elif enabled ppc; then
5446
5447     enable local_aligned
5448
5449     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5450     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5451     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5452     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5453
5454     if enabled altivec; then
5455         check_cflags -maltivec -mabi=altivec
5456
5457         # check if our compiler supports Motorola AltiVec C API
5458         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5459                                  vector signed int v2 = (vector signed int) { 1 };
5460                                  v1 = vec_add(v1, v2);" ||
5461             disable altivec
5462
5463         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5464     fi
5465
5466     if enabled vsx; then
5467         check_cflags -mvsx &&
5468         check_code cc altivec.h "int v[4] = { 0 };
5469                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5470             disable vsx
5471     fi
5472
5473     if enabled power8; then
5474         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5475     fi
5476
5477 elif enabled x86; then
5478
5479     check_builtin rdtsc    intrin.h   "__rdtsc()"
5480     check_builtin mm_empty mmintrin.h "_mm_empty()"
5481
5482     enable local_aligned
5483
5484     # check whether EBP is available on x86
5485     # As 'i' is stored on the stack, this program will crash
5486     # if the base pointer is used to access it because the
5487     # base pointer is cleared in the inline assembly code.
5488     check_exec_crash <<EOF && enable ebp_available
5489 volatile int i=0;
5490 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5491 return i;
5492 EOF
5493
5494     # check whether EBX is available on x86
5495     check_inline_asm ebx_available '""::"b"(0)' &&
5496         check_inline_asm ebx_available '"":::"%ebx"'
5497
5498     # check whether xmm clobbers are supported
5499     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5500
5501     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5502         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5503
5504     # check whether binutils is new enough to compile SSSE3/MMXEXT
5505     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5506     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5507
5508     probe_x86asm(){
5509         x86asmexe_probe=$1
5510         if check_cmd $x86asmexe_probe -v; then
5511             x86asmexe=$x86asmexe_probe
5512             x86asm_type=nasm
5513             x86asm_debug="-g -F dwarf"
5514             X86ASMDEP=
5515             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5516         elif check_cmd $x86asmexe_probe --version; then
5517             x86asmexe=$x86asmexe_probe
5518             x86asm_type=yasm
5519             x86asm_debug="-g dwarf2"
5520             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5521             X86ASM_DEPFLAGS=
5522         fi
5523         check_x86asm "movbe ecx, [5]" && enable x86asm
5524     }
5525
5526     if ! disabled_any asm mmx x86asm; then
5527         disable x86asm
5528         for program in $x86asmexe nasm yasm; do
5529             probe_x86asm $program && break
5530         done
5531         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5532         X86ASMFLAGS="-f $objformat"
5533         enabled pic               && append X86ASMFLAGS "-DPIC"
5534         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5535         case "$objformat" in
5536             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5537         esac
5538
5539         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5540         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5541         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5542         check_x86asm "CPU amdnop" || disable cpunop
5543     fi
5544
5545     case "$cpu" in
5546         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5547             disable fast_clz
5548         ;;
5549     esac
5550
5551 fi
5552
5553 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5554
5555 check_ldflags -Wl,--as-needed
5556 check_ldflags -Wl,-z,noexecstack
5557
5558 if ! disabled network; then
5559     check_func getaddrinfo $network_extralibs
5560     check_func inet_aton $network_extralibs
5561
5562     check_type netdb.h "struct addrinfo"
5563     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5564     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5565     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5566     check_type poll.h "struct pollfd"
5567     check_type netinet/sctp.h "struct sctp_event_subscribe"
5568     check_struct "sys/socket.h" "struct msghdr" msg_flags
5569     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5570     check_type netinet/in.h "struct sockaddr_in6"
5571     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5572     check_type "sys/types.h sys/socket.h" socklen_t
5573
5574     # Prefer arpa/inet.h over winsock2
5575     if check_header arpa/inet.h ; then
5576         check_func closesocket
5577     elif check_header winsock2.h ; then
5578         check_func_headers winsock2.h closesocket -lws2 &&
5579             network_extralibs="-lws2" ||
5580         { check_func_headers winsock2.h closesocket -lws2_32 &&
5581             network_extralibs="-lws2_32"; } || disable winsock2_h network
5582         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5583
5584         check_type ws2tcpip.h socklen_t
5585         check_type ws2tcpip.h "struct addrinfo"
5586         check_type ws2tcpip.h "struct group_source_req"
5587         check_type ws2tcpip.h "struct ip_mreq_source"
5588         check_type ws2tcpip.h "struct ipv6_mreq"
5589         check_type winsock2.h "struct pollfd"
5590         check_struct winsock2.h "struct sockaddr" sa_len
5591         check_type ws2tcpip.h "struct sockaddr_in6"
5592         check_type ws2tcpip.h "struct sockaddr_storage"
5593     else
5594         disable network
5595     fi
5596 fi
5597
5598 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5599 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5600 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5601 check_builtin sarestart signal.h "SA_RESTART"
5602 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5603 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5604 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5605 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5606
5607 case "$custom_allocator" in
5608     jemalloc)
5609         # jemalloc by default does not use a prefix
5610         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5611     ;;
5612     tcmalloc)
5613         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5614         malloc_prefix=tc_
5615     ;;
5616 esac
5617
5618 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5619 check_func  ${malloc_prefix}memalign            && enable memalign
5620 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5621
5622 check_func  access
5623 check_func_headers stdlib.h arc4random
5624 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5625 check_func  fcntl
5626 check_func  fork
5627 check_func  gethrtime
5628 check_func  getopt
5629 check_func  getrusage
5630 check_func  gettimeofday
5631 check_func  isatty
5632 check_func  mkstemp
5633 check_func  mmap
5634 check_func  mprotect
5635 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5636 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5637 check_func  sched_getaffinity
5638 check_func  setrlimit
5639 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5640 check_func  strerror_r
5641 check_func  sysconf
5642 check_func  sysctl
5643 check_func  usleep
5644
5645 check_func_headers conio.h kbhit
5646 check_func_headers io.h setmode
5647 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5648 check_func_headers mach/mach_time.h mach_absolute_time
5649 check_func_headers stdlib.h getenv
5650 check_func_headers sys/stat.h lstat
5651
5652 check_func_headers windows.h GetProcessAffinityMask
5653 check_func_headers windows.h GetProcessTimes
5654 check_func_headers windows.h GetSystemTimeAsFileTime
5655 check_func_headers windows.h LoadLibrary
5656 check_func_headers windows.h MapViewOfFile
5657 check_func_headers windows.h PeekNamedPipe
5658 check_func_headers windows.h SetConsoleTextAttribute
5659 check_func_headers windows.h SetConsoleCtrlHandler
5660 check_func_headers windows.h Sleep
5661 check_func_headers windows.h VirtualAlloc
5662 check_struct windows.h "CONDITION_VARIABLE" Ptr
5663 check_func_headers glob.h glob
5664 enabled xlib &&
5665     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5666
5667 check_header direct.h
5668 check_header dirent.h
5669 check_header dxgidebug.h
5670 check_header dxva.h
5671 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5672 check_header io.h
5673 check_header libcrystalhd/libcrystalhd_if.h
5674 check_header malloc.h
5675 check_header net/udplite.h
5676 check_header poll.h
5677 check_header sys/param.h
5678 check_header sys/resource.h
5679 check_header sys/select.h
5680 check_header sys/time.h
5681 check_header sys/un.h
5682 check_header termios.h
5683 check_header unistd.h
5684 check_header valgrind/valgrind.h
5685 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5686 check_header windows.h
5687 check_header X11/extensions/XvMClib.h
5688 check_header asm/types.h
5689
5690 # it seems there are versions of clang in some distros that try to use the
5691 # gcc headers, which explodes for stdatomic
5692 # so we also check that atomics actually work here
5693 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5694
5695 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5696 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5697 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5698 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5699 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5700
5701 enabled appkit       && check_apple_framework AppKit
5702 enabled audiotoolbox && check_apple_framework AudioToolbox
5703 enabled avfoundation && check_apple_framework AVFoundation
5704 enabled coreimage    && check_apple_framework CoreImage
5705 enabled videotoolbox && check_apple_framework VideoToolbox
5706
5707 check_apple_framework CoreFoundation
5708 check_apple_framework CoreMedia
5709 check_apple_framework CoreVideo
5710
5711 enabled avfoundation && {
5712     disable coregraphics applicationservices
5713     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5714     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5715
5716 enabled videotoolbox && {
5717     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5718     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5719 }
5720
5721 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5722
5723 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5724 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5725 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5726 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5727 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5728
5729 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5730 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5731 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5732 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5733 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5734 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5735 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5736 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5737 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5738
5739 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5740
5741 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5742
5743 if ! disabled w32threads && ! enabled pthreads; then
5744     check_func_headers "windows.h process.h" _beginthreadex &&
5745         enable w32threads || disable w32threads
5746     if ! enabled w32threads && enabled winrt; then
5747         check_func_headers "windows.h" CreateThread &&
5748             enable w32threads || disable w32threads
5749     fi
5750 fi
5751
5752 # check for some common methods of building with pthread support
5753 # do this before the optional library checks as some of them require pthreads
5754 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5755     if check_lib pthreads pthread.h pthread_join   -pthread &&
5756        check_lib pthreads pthread.h pthread_create -pthread; then
5757         add_cflags -pthread
5758     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5759          check_lib pthreads pthread.h pthread_create -pthreads; then
5760         add_cflags -pthreads
5761     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5762          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5763         add_cflags -ldl -pthread
5764     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5765          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5766         :
5767     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5768          check_lib pthreads pthread.h pthread_create -lpthread; then
5769         :
5770     elif check_func pthread_join && check_func pthread_create; then
5771         enable pthreads
5772     fi
5773     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5774 fi
5775
5776
5777 if enabled pthreads; then
5778   check_func pthread_cancel $pthreads_extralibs
5779 fi
5780
5781 enabled pthreads &&
5782     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5783
5784 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5785 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5786 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5787
5788 # On some systems dynamic loading requires no extra linker flags
5789 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5790
5791 check_lib libm math.h sin -lm
5792
5793 atan2f_args=2
5794 copysign_args=2
5795 hypot_args=2
5796 ldexpf_args=2
5797 powf_args=2
5798
5799 for func in $MATH_FUNCS; do
5800     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5801 done
5802
5803 for func in $COMPLEX_FUNCS; do
5804     eval check_complexfunc $func \${${func}_args:-1}
5805 done
5806
5807 # these are off by default, so fail if requested and not available
5808 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5809 enabled cuvid             && { enabled cuda ||
5810                                die "ERROR: CUVID requires CUDA"; }
5811 enabled nvdec             && { enabled cuda ||
5812                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5813 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5814 enabled decklink          && { require_header DeckLinkAPI.h &&
5815                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5816 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5817 enabled frei0r            && require_header frei0r.h
5818 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5819 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5820 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5821 enabled ladspa            && require_header ladspa.h
5822 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5823 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5824 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5825 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5826 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5827                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5828                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5829 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5830 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5831 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5832 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5833                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5834                                  warn "using libfdk without pkg-config"; } }
5835 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"
5836 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5837 enabled fontconfig        && enable libfontconfig
5838 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5839 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5840 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5841 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5842                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5843 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5844                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5845                                done || die "ERROR: libgsm not found"; }
5846 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5847 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5848 # While it may appear that require is being used as a pkg-config
5849 # fallback for libmfx, it is actually being used to detect a different
5850 # installation route altogether.  If libmfx is installed via the Intel
5851 # Media SDK or Intel Media Server Studio, these don't come with
5852 # pkg-config support.  Instead, users should make sure that the build
5853 # can find the libraries and headers through other means.
5854 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5855                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5856 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5857 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5858 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5859 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5860                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5861                                die "ERROR: libnpp not found"; }
5862 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5863 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5864 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5865                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5866                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5867                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5868 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5869 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5870                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5871 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5872 enabled libopus           && {
5873     enabled libopus_decoder && {
5874         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5875     }
5876     enabled libopus_encoder && {
5877         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5878     }
5879 }
5880 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5881 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5882 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5883 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5884 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5885 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5886                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5887 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5888 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5889 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5890 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5891 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5892 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5893 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5894                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5895                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5896 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5897 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5898 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5899 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5900 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5901                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5902
5903 enabled libvpx            && {
5904     enabled libvpx_vp8_decoder && {
5905         check_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5906             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5907                 die "ERROR: libvpx decoder version must be >=0.9.1";
5908     }
5909     enabled libvpx_vp8_encoder && {
5910         check_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5911             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5912                 die "ERROR: libvpx encoder version must be >=0.9.7";
5913     }
5914     enabled libvpx_vp9_decoder && {
5915         check_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5916             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5917     }
5918     enabled libvpx_vp9_encoder && {
5919         check_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5920             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5921     }
5922     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5923         die "libvpx enabled but no supported decoders found"
5924     fi
5925 }
5926
5927 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5928 enabled libwebp           && {
5929     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5930     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5931 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5932                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5933                                  warn "using libx264 without pkg-config"; } } &&
5934                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5935                              { check_cpp_condition x264.h "X264_MPEG2" &&
5936                                enable libx262; }
5937 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5938                              require_cpp_condition x265.h "X265_BUILD >= 68"
5939 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5940 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5941 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5942 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5943 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5944                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5945                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5946 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5947 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5948 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5949                                { ! enabled cross_compile &&
5950                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5951                                  add_ldflags -L/opt/vc/lib/ &&
5952                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5953                                die "ERROR: mmal not found" &&
5954                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5955 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5956                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5957                                die "ERROR: openal not found"; } &&
5958                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5959                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5960 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5961                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5962                                die "ERROR: opencl not found"; } &&
5963                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5964                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5965                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5966 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5967                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5968                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5969                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5970                                die "ERROR: opengl not found."
5971                              }
5972 enabled omx               && require_header OMX_Core.h
5973 enabled omx_rpi           && { check_header OMX_Core.h ||
5974                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5975                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5976 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5977                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5978                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5979                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5980                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5981                                die "ERROR: openssl not found"; }
5982 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5983                                  die "ERROR : Rockchip MPP was not found."; } &&
5984                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5985                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5986                                { enabled libdrm ||
5987                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5988                              }
5989
5990 if enabled gcrypt; then
5991     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5992     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5993         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5994         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5995         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5996             die "ERROR: gcrypt not found"
5997         add_cflags $gcrypt_cflags
5998     else
5999         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6000     fi
6001 fi
6002
6003 if enabled sdl2; then
6004     SDL2_CONFIG="${cross_prefix}sdl2-config"
6005     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6006         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6007             disable sdl2
6008     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6009         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6010         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6011         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6012         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6013         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6014             enable sdl2
6015     fi
6016     if test $target_os = "mingw32"; then
6017         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6018     fi
6019 fi
6020
6021 if enabled decklink; then
6022     case $target_os in
6023         mingw32*|mingw64*|win32|win64)
6024             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6025             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6026             ;;
6027     esac
6028 fi
6029
6030 enabled securetransport &&
6031     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6032     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6033         disable securetransport
6034
6035 enabled securetransport &&
6036     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6037
6038 enabled schannel &&
6039     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6040     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6041     schannel_extralibs="-lsecur32" ||
6042         disable schannel
6043
6044 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6045 enabled makeinfo \
6046     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6047     && enable makeinfo_html || disable makeinfo_html
6048 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6049 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6050 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6051 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6052
6053 # check V4L2 codecs available in the API
6054 check_header linux/fb.h
6055 check_header linux/videodev2.h
6056 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6057 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6058 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6059 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6060 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6061 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6062 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6063 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6064 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6065 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6066 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6067
6068 check_header sys/videoio.h
6069 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6070
6071 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6072 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6073 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6074 # w32api 3.12 had it defined wrong
6075 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6076
6077 check_type "dshow.h" IBaseFilter
6078
6079 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6080 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6081     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6082     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6083     check_header "dev/ic/bt8xx.h"
6084
6085 if check_struct sys/soundcard.h audio_buf_info bytes; then
6086     enable_sanitized sys/soundcard.h
6087 else
6088     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6089     #include <sys/soundcard.h>
6090     audio_buf_info abc;
6091 EOF
6092 fi
6093
6094 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6095     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6096
6097 enabled libjack &&
6098     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6099
6100 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6101
6102 if enabled libcdio; then
6103     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6104     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6105     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6106     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6107     die "ERROR: No usable libcdio/cdparanoia found"
6108 fi
6109
6110 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6111     disable libxcb_shm libxcb_shape libxcb_xfixes
6112
6113 if enabled libxcb; then
6114     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6115     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6116     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6117 fi
6118
6119 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6120
6121 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6122 # the desktop api partition
6123 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6124 #ifdef WINAPI_FAMILY
6125 #include <winapifamily.h>
6126 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6127 #error desktop, not uwp
6128 #else
6129 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6130 #endif
6131 #else
6132 #error no family set
6133 #endif
6134 EOF
6135
6136 enabled vaapi &&
6137     check_lib vaapi va/va.h vaInitialize -lva
6138
6139 enabled vaapi &&
6140     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6141     disable vaapi
6142
6143 enabled vaapi &&
6144     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6145
6146 enabled vaapi &&
6147     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6148
6149 enabled vaapi &&
6150     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6151     enable vaapi_1
6152
6153 enabled vdpau &&
6154     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6155     disable vdpau
6156
6157 enabled vdpau &&
6158     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6159
6160 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6161
6162 if enabled x86; then
6163     case $target_os in
6164         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6165             ;;
6166         *)
6167             disable cuda cuvid nvdec nvenc
6168             ;;
6169     esac
6170 else
6171     disable cuda cuvid nvdec nvenc
6172 fi
6173
6174 enabled nvenc &&
6175     check_cc -I$source_path <<EOF || disable nvenc
6176 #include "compat/nvenc/nvEncodeAPI.h"
6177 NV_ENCODE_API_FUNCTION_LIST flist;
6178 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6179 int main(void) { return 0; }
6180 EOF
6181
6182 # Funny iconv installations are not unusual, so check it after all flags have been set
6183 if enabled libc_iconv; then
6184     check_func_headers iconv.h iconv
6185 elif enabled iconv; then
6186     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6187 fi
6188
6189 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6190
6191 # add some useful compiler flags if supported
6192 check_cflags -Wdeclaration-after-statement
6193 check_cflags -Wall
6194 check_cflags -Wdisabled-optimization
6195 check_cflags -Wpointer-arith
6196 check_cflags -Wredundant-decls
6197 check_cflags -Wwrite-strings
6198 check_cflags -Wtype-limits
6199 check_cflags -Wundef
6200 check_cflags -Wmissing-prototypes
6201 check_cflags -Wno-pointer-to-int-cast
6202 check_cflags -Wstrict-prototypes
6203 check_cflags -Wempty-body
6204
6205 if enabled extra_warnings; then
6206     check_cflags -Wcast-qual
6207     check_cflags -Wextra
6208     check_cflags -Wpedantic
6209 fi
6210
6211 check_disable_warning(){
6212     warning_flag=-W${1#-Wno-}
6213     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6214 }
6215
6216 test_cflags -Werror=unused-command-line-argument &&
6217     append unknown_warning_flags "-Werror=unused-command-line-argument"
6218 test_cflags -Werror=unknown-warning-option &&
6219     append unknown_warning_flags "-Werror=unknown-warning-option"
6220
6221 check_disable_warning -Wno-parentheses
6222 check_disable_warning -Wno-switch
6223 check_disable_warning -Wno-format-zero-length
6224 check_disable_warning -Wno-pointer-sign
6225 check_disable_warning -Wno-unused-const-variable
6226 check_disable_warning -Wno-bool-operation
6227
6228 check_disable_warning_headers(){
6229     warning_flag=-W${1#-Wno-}
6230     test_cflags $warning_flag && add_cflags_headers $1
6231 }
6232
6233 check_disable_warning_headers -Wno-deprecated-declarations
6234 check_disable_warning_headers -Wno-unused-variable
6235
6236 check_cc <<EOF && enable blocks_extension
6237 void (^block)(void);
6238 EOF
6239
6240 # add some linker flags
6241 check_ldflags -Wl,--warn-common
6242 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6243 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6244 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6245
6246 # add some strip flags
6247 check_stripflags -x
6248
6249 enabled neon_clobber_test &&
6250     check_ldflags -Wl,--wrap,avcodec_open2              \
6251                   -Wl,--wrap,avcodec_decode_audio4      \
6252                   -Wl,--wrap,avcodec_decode_video2      \
6253                   -Wl,--wrap,avcodec_decode_subtitle2   \
6254                   -Wl,--wrap,avcodec_encode_audio2      \
6255                   -Wl,--wrap,avcodec_encode_video2      \
6256                   -Wl,--wrap,avcodec_encode_subtitle    \
6257                   -Wl,--wrap,avcodec_send_packet        \
6258                   -Wl,--wrap,avcodec_receive_packet     \
6259                   -Wl,--wrap,avcodec_send_frame         \
6260                   -Wl,--wrap,avcodec_receive_frame      \
6261                   -Wl,--wrap,swr_convert                \
6262                   -Wl,--wrap,avresample_convert ||
6263     disable neon_clobber_test
6264
6265 enabled xmm_clobber_test &&
6266     check_ldflags -Wl,--wrap,avcodec_open2              \
6267                   -Wl,--wrap,avcodec_decode_audio4      \
6268                   -Wl,--wrap,avcodec_decode_video2      \
6269                   -Wl,--wrap,avcodec_decode_subtitle2   \
6270                   -Wl,--wrap,avcodec_encode_audio2      \
6271                   -Wl,--wrap,avcodec_encode_video2      \
6272                   -Wl,--wrap,avcodec_encode_subtitle    \
6273                   -Wl,--wrap,avcodec_send_packet        \
6274                   -Wl,--wrap,avcodec_receive_packet     \
6275                   -Wl,--wrap,avcodec_send_frame         \
6276                   -Wl,--wrap,avcodec_receive_frame      \
6277                   -Wl,--wrap,swr_convert                \
6278                   -Wl,--wrap,avresample_convert         \
6279                   -Wl,--wrap,sws_scale ||
6280     disable xmm_clobber_test
6281
6282 check_ld "cc" <<EOF && enable proper_dce
6283 extern const int array[512];
6284 static inline int func(void) { return array[0]; }
6285 int main(void) { return 0; }
6286 EOF
6287
6288 if enabled proper_dce; then
6289     echo "X { local: *; };" > $TMPV
6290     if test_ldflags -Wl,${version_script},$TMPV; then
6291         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6292         check_cc <<EOF && enable symver_asm_label
6293 void ff_foo(void) __asm__ ("av_foo@VERSION");
6294 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6295 EOF
6296         check_cc <<EOF && enable symver_gnu_asm
6297 __asm__(".symver ff_foo,av_foo@VERSION");
6298 void ff_foo(void) {}
6299 EOF
6300     fi
6301 fi
6302
6303 if [ -z "$optflags" ]; then
6304     if enabled small; then
6305         optflags=$cflags_size
6306     elif enabled optimizations; then
6307         optflags=$cflags_speed
6308     else
6309         optflags=$cflags_noopt
6310     fi
6311 fi
6312
6313 if [ -z "$nvccflags" ]; then
6314     nvccflags=$nvccflags_default
6315 fi
6316
6317 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6318     nvccflags="$nvccflags -m64"
6319 else
6320     nvccflags="$nvccflags -m32"
6321 fi
6322
6323 check_optflags(){
6324     check_cflags "$@"
6325     enabled lto && check_ldflags "$@"
6326 }
6327
6328 check_optflags $optflags
6329 check_optflags -fno-math-errno
6330 check_optflags -fno-signed-zeros
6331
6332 if enabled lto; then
6333     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6334     check_cflags  -flto
6335     check_ldflags -flto $cpuflags
6336     disable inline_asm_direct_symbol_refs
6337 fi
6338
6339 enabled ftrapv && check_cflags -ftrapv
6340
6341 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6342 int x;
6343 EOF
6344
6345
6346 if enabled icc; then
6347     # Just warnings, no remarks
6348     check_cflags -w1
6349     # -wd: Disable following warnings
6350     # 144, 167, 556: -Wno-pointer-sign
6351     # 188: enumerated type mixed with another type
6352     # 1292: attribute "foo" ignored
6353     # 1419: external declaration in primary source file
6354     # 10006: ignoring unknown option -fno-signed-zeros
6355     # 10148: ignoring unknown option -Wno-parentheses
6356     # 10156: ignoring option '-W'; no argument required
6357     # 13200: No EMMS instruction before call to function
6358     # 13203: No EMMS instruction before return from function
6359     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6360     # 11030: Warning unknown option --as-needed
6361     # 10156: ignoring option '-export'; no argument required
6362     check_ldflags -wd10156,11030
6363     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6364     enable ebp_available
6365     # The test above does not test linking
6366     enabled lto && disable symver_asm_label
6367     if enabled x86_32; then
6368         icc_version=$($cc -dumpversion)
6369         test ${icc_version%%.*} -ge 11 &&
6370             check_cflags -falign-stack=maintain-16-byte ||
6371             disable aligned_stack
6372     fi
6373 elif enabled gcc; then
6374     check_optflags -fno-tree-vectorize
6375     check_cflags -Werror=format-security
6376     check_cflags -Werror=implicit-function-declaration
6377     check_cflags -Werror=missing-prototypes
6378     check_cflags -Werror=return-type
6379     check_cflags -Werror=vla
6380     check_cflags -Wformat
6381     check_cflags -fdiagnostics-color=auto
6382     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6383 elif enabled llvm_gcc; then
6384     check_cflags -mllvm -stack-alignment=16
6385 elif enabled clang; then
6386     check_cflags -mllvm -stack-alignment=16
6387     check_cflags -mstack-alignment=16
6388     check_cflags -Qunused-arguments
6389     check_cflags -Werror=implicit-function-declaration
6390     check_cflags -Werror=missing-prototypes
6391     check_cflags -Werror=return-type
6392 elif enabled cparser; then
6393     add_cflags -Wno-missing-variable-declarations
6394     add_cflags -Wno-empty-statement
6395 elif enabled armcc; then
6396     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6397     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6398     # 2523: use of inline assembly is deprecated
6399     add_cflags -W${armcc_opt},--diag_suppress=2523
6400     add_cflags -W${armcc_opt},--diag_suppress=1207
6401     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6402     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6403     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6404     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6405 elif enabled pathscale; then
6406     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6407     disable inline_asm
6408 elif enabled_any msvc icl; then
6409     enabled x86_32 && disable aligned_stack
6410     enabled_all x86_32 debug && add_cflags -Oy-
6411     enabled debug && add_ldflags -debug
6412     enable pragma_deprecated
6413     if enabled icl; then
6414         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6415         # (correctly) on icl 13.x.
6416         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6417             add_cflags -Qansi-alias
6418         # Some inline asm is not compilable in debug
6419         if enabled debug; then
6420             disable ebp_available
6421             disable ebx_available
6422         fi
6423     fi
6424     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6425     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6426     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6427     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6428     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6429     # MSVC 2013 and newer can handle it fine.
6430     # If this declspec fails, force including stdlib.h before the restrict redefinition
6431     # happens in config.h.
6432     if [ $_restrict != restrict ]; then
6433         check_cc <<EOF || add_cflags -FIstdlib.h
6434 __declspec($_restrict) void* foo(int);
6435 EOF
6436     fi
6437     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6438     # Issue has been fixed in MSVC v19.00.24218.
6439     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6440         check_cflags -d2SSAOptimizer-
6441     # enable utf-8 source processing on VS2015 U2 and newer
6442     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6443         add_cflags -utf-8
6444 fi
6445
6446 for pfx in "" host_; do
6447     varname=${pfx%_}cc_type
6448     eval "type=\$$varname"
6449     if [ "$type" = "msvc" ]; then
6450         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6451 static inline int foo(int a) { return a; }
6452 EOF
6453     fi
6454 done
6455
6456 case $as_type in
6457     clang)
6458         add_asflags -Qunused-arguments
6459     ;;
6460 esac
6461
6462 case $ld_type in
6463     clang)
6464         check_ldflags -Qunused-arguments
6465     ;;
6466 esac
6467
6468 enable frame_thread_encoder
6469
6470 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6471
6472 check_deps $CONFIG_LIST       \
6473            $CONFIG_EXTRA      \
6474            $HAVE_LIST         \
6475            $ALL_COMPONENTS    \
6476
6477 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"
6478
6479
6480 if test $target_os = "haiku"; then
6481     disable memalign
6482     disable posix_memalign
6483 fi
6484
6485 flatten_extralibs(){
6486     unset nested_entries
6487     list_name=$1
6488     eval list=\$${1}
6489     for entry in $list; do
6490         entry_copy=$entry
6491         resolve entry_copy
6492         append nested_entries $(filter '*_extralibs' $entry_copy)
6493         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6494         eval $entry="\$flat_entries"
6495     done
6496     append $list_name "$nested_entries"
6497
6498     resolve nested_entries
6499     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6500         flatten_extralibs $list_name
6501     fi
6502 }
6503
6504 for linkunit in $LIBRARY_LIST; do
6505     unset current_extralibs
6506     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6507     for comp in ${components}; do
6508         enabled $comp || continue
6509         comp_extralibs="${comp}_extralibs"
6510         append current_extralibs $comp_extralibs
6511     done
6512     eval prepend ${linkunit}_extralibs $current_extralibs
6513 done
6514
6515 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6516     flatten_extralibs ${linkunit}_extralibs
6517     unique  ${linkunit}_extralibs
6518     resolve ${linkunit}_extralibs
6519     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6520 done
6521
6522 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6523
6524 for thread in $THREADS_LIST; do
6525     if enabled $thread; then
6526         test -n "$thread_type" &&
6527             die "ERROR: Only one thread type must be selected." ||
6528             thread_type="$thread"
6529     fi
6530 done
6531
6532 if disabled stdatomic; then
6533     if enabled atomics_gcc; then
6534         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6535     elif enabled atomics_win32; then
6536         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6537     elif enabled atomics_suncc; then
6538         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6539     elif enabled pthreads; then
6540         add_compat atomics/pthread/stdatomic.o
6541         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6542     else
6543         enabled threads && die "Threading is enabled, but no atomics are available"
6544         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6545     fi
6546 fi
6547
6548 # Check if requested libraries were found.
6549 for lib in $AUTODETECT_LIBS; do
6550     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6551 done
6552
6553 enabled zlib && add_cppflags -DZLIB_CONST
6554
6555 # conditional library dependencies, in linking order
6556 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6557 enabled afir_filter         && prepend avfilter_deps "avcodec"
6558 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6559 enabled aresample_filter    && prepend avfilter_deps "swresample"
6560 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6561 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6562 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6563 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6564 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6565 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6566 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6567 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6568 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6569 enabled pan_filter          && prepend avfilter_deps "swresample"
6570 enabled pp_filter           && prepend avfilter_deps "postproc"
6571 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6572 enabled resample_filter && prepend avfilter_deps "avresample"
6573 enabled sab_filter          && prepend avfilter_deps "swscale"
6574 enabled scale_filter    && prepend avfilter_deps "swscale"
6575 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6576 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6577 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6578 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6579 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6580 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6581 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6582 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6583 enabled spp_filter          && prepend avfilter_deps "avcodec"
6584 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6585 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6586 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6587
6588 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6589
6590 #FIXME
6591 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6592
6593 enabled opus_decoder    && prepend avcodec_deps "swresample"
6594
6595 expand_deps(){
6596     lib_deps=${1}_deps
6597     eval "deps=\$$lib_deps"
6598     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6599     unique $lib_deps
6600 }
6601
6602 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6603 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6604
6605 map 'expand_deps $v' $LIBRARY_LIST
6606
6607 license="LGPL version 2.1 or later"
6608 if enabled nonfree; then
6609     license="nonfree and unredistributable"
6610 elif enabled gplv3; then
6611     license="GPL version 3 or later"
6612 elif enabled lgplv3; then
6613     license="LGPL version 3 or later"
6614 elif enabled gpl; then
6615     license="GPL version 2 or later"
6616 fi
6617
6618 if test "$quiet" != "yes"; then
6619
6620 echo "install prefix            $prefix"
6621 echo "source path               $source_path"
6622 echo "C compiler                $cc"
6623 echo "C library                 $libc_type"
6624 if test "$host_cc" != "$cc"; then
6625     echo "host C compiler           $host_cc"
6626     echo "host C library            $host_libc_type"
6627 fi
6628 echo "ARCH                      $arch ($cpu)"
6629 if test "$build_suffix" != ""; then
6630     echo "build suffix              $build_suffix"
6631 fi
6632 if test "$progs_suffix" != ""; then
6633     echo "progs suffix              $progs_suffix"
6634 fi
6635 if test "$extra_version" != ""; then
6636     echo "version string suffix     $extra_version"
6637 fi
6638 echo "big-endian                ${bigendian-no}"
6639 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6640 if enabled x86; then
6641     echo "standalone assembly       ${x86asm-no}"
6642     echo "x86 assembler             ${x86asmexe}"
6643     echo "MMX enabled               ${mmx-no}"
6644     echo "MMXEXT enabled            ${mmxext-no}"
6645     echo "3DNow! enabled            ${amd3dnow-no}"
6646     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6647     echo "SSE enabled               ${sse-no}"
6648     echo "SSSE3 enabled             ${ssse3-no}"
6649     echo "AESNI enabled             ${aesni-no}"
6650     echo "AVX enabled               ${avx-no}"
6651     echo "AVX2 enabled              ${avx2-no}"
6652     echo "XOP enabled               ${xop-no}"
6653     echo "FMA3 enabled              ${fma3-no}"
6654     echo "FMA4 enabled              ${fma4-no}"
6655     echo "i686 features enabled     ${i686-no}"
6656     echo "CMOV is fast              ${fast_cmov-no}"
6657     echo "EBX available             ${ebx_available-no}"
6658     echo "EBP available             ${ebp_available-no}"
6659 fi
6660 if enabled aarch64; then
6661     echo "NEON enabled              ${neon-no}"
6662     echo "VFP enabled               ${vfp-no}"
6663 fi
6664 if enabled arm; then
6665     echo "ARMv5TE enabled           ${armv5te-no}"
6666     echo "ARMv6 enabled             ${armv6-no}"
6667     echo "ARMv6T2 enabled           ${armv6t2-no}"
6668     echo "VFP enabled               ${vfp-no}"
6669     echo "NEON enabled              ${neon-no}"
6670     echo "THUMB enabled             ${thumb-no}"
6671 fi
6672 if enabled mips; then
6673     echo "MIPS FPU enabled          ${mipsfpu-no}"
6674     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6675     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6676     echo "MIPS MSA enabled          ${msa-no}"
6677     echo "LOONGSON MMI enabled      ${mmi-no}"
6678 fi
6679 if enabled ppc; then
6680     echo "AltiVec enabled           ${altivec-no}"
6681     echo "VSX enabled               ${vsx-no}"
6682     echo "POWER8 enabled            ${power8-no}"
6683     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6684     echo "dcbzl available           ${dcbzl-no}"
6685 fi
6686 echo "debug symbols             ${debug-no}"
6687 echo "strip symbols             ${stripping-no}"
6688 echo "optimize for size         ${small-no}"
6689 echo "optimizations             ${optimizations-no}"
6690 echo "static                    ${static-no}"
6691 echo "shared                    ${shared-no}"
6692 echo "postprocessing support    ${postproc-no}"
6693 echo "network support           ${network-no}"
6694 echo "threading support         ${thread_type-no}"
6695 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6696 echo "texi2html enabled         ${texi2html-no}"
6697 echo "perl enabled              ${perl-no}"
6698 echo "pod2man enabled           ${pod2man-no}"
6699 echo "makeinfo enabled          ${makeinfo-no}"
6700 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6701 test -n "$random_seed" &&
6702     echo "random seed               ${random_seed}"
6703 echo
6704
6705 echo "External libraries:"
6706 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6707 echo
6708
6709 echo "External libraries providing hardware acceleration:"
6710 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6711 echo
6712
6713 echo "Libraries:"
6714 print_enabled '' $LIBRARY_LIST | print_in_columns
6715 echo
6716
6717 echo "Programs:"
6718 print_enabled '' $PROGRAM_LIST | print_in_columns
6719 echo
6720
6721 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6722     echo "Enabled ${type}s:"
6723     eval list=\$$(toupper $type)_LIST
6724     print_enabled '_*' $list | print_in_columns
6725     echo
6726 done
6727
6728 if test -n "$ignore_tests"; then
6729     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6730     echo "Ignored FATE tests:"
6731     echo $ignore_tests | print_in_columns
6732     echo
6733 fi
6734
6735 echo "License: $license"
6736
6737 fi # test "$quiet" != "yes"
6738
6739 if test -n "$WARNINGS"; then
6740     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6741     enabled fatal_warnings && exit 1
6742 fi
6743
6744 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6745
6746 esc(){
6747     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6748 }
6749
6750 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6751
6752 enabled stripping || strip="echo skipping strip"
6753 enabled stripping || striptype=""
6754
6755 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6756
6757 cat > ffbuild/config.mak <<EOF
6758 # Automatically generated by configure - do not modify!
6759 ifndef FFMPEG_CONFIG_MAK
6760 FFMPEG_CONFIG_MAK=1
6761 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6762 prefix=$prefix
6763 LIBDIR=\$(DESTDIR)$libdir
6764 SHLIBDIR=\$(DESTDIR)$shlibdir
6765 INCDIR=\$(DESTDIR)$incdir
6766 BINDIR=\$(DESTDIR)$bindir
6767 DATADIR=\$(DESTDIR)$datadir
6768 DOCDIR=\$(DESTDIR)$docdir
6769 MANDIR=\$(DESTDIR)$mandir
6770 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6771 INSTALL_NAME_DIR=$install_name_dir
6772 SRC_PATH=$source_path
6773 SRC_LINK=$source_link
6774 ifndef MAIN_MAKEFILE
6775 SRC_PATH:=\$(SRC_PATH:.%=..%)
6776 endif
6777 CC_IDENT=$cc_ident
6778 ARCH=$arch
6779 INTRINSICS=$intrinsics
6780 CC=$cc
6781 CXX=$cxx
6782 AS=$as
6783 OBJCC=$objcc
6784 LD=$ld
6785 DEPCC=$dep_cc
6786 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6787 DEPAS=$as
6788 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6789 X86ASM=$x86asmexe
6790 DEPX86ASM=$x86asmexe
6791 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6792 AR=$ar
6793 ARFLAGS=$arflags
6794 AR_O=$ar_o
6795 AR_CMD=$ar
6796 NM_CMD=$nm
6797 RANLIB=$ranlib
6798 STRIP=$strip
6799 STRIPTYPE=$striptype
6800 NVCC=$nvcc
6801 CP=cp -p
6802 LN_S=$ln_s
6803 CPPFLAGS=$CPPFLAGS
6804 CFLAGS=$CFLAGS
6805 CXXFLAGS=$CXXFLAGS
6806 OBJCFLAGS=$OBJCFLAGS
6807 ASFLAGS=$ASFLAGS
6808 NVCCFLAGS=$nvccflags
6809 AS_C=$AS_C
6810 AS_O=$AS_O
6811 OBJCC_C=$OBJCC_C
6812 OBJCC_E=$OBJCC_E
6813 OBJCC_O=$OBJCC_O
6814 CC_C=$CC_C
6815 CC_E=$CC_E
6816 CC_O=$CC_O
6817 CXX_C=$CXX_C
6818 CXX_O=$CXX_O
6819 NVCC_C=$NVCC_C
6820 NVCC_O=$NVCC_O
6821 LD_O=$LD_O
6822 X86ASM_O=$X86ASM_O
6823 LD_LIB=$LD_LIB
6824 LD_PATH=$LD_PATH
6825 WINDRES=$windres
6826 DEPWINDRES=$dep_cc
6827 DOXYGEN=$doxygen
6828 LDFLAGS=$LDFLAGS
6829 LDEXEFLAGS=$LDEXEFLAGS
6830 LDSOFLAGS=$LDSOFLAGS
6831 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6832 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6833 X86ASMFLAGS=$X86ASMFLAGS
6834 BUILDSUF=$build_suffix
6835 PROGSSUF=$progs_suffix
6836 FULLNAME=$FULLNAME
6837 LIBPREF=$LIBPREF
6838 LIBSUF=$LIBSUF
6839 LIBNAME=$LIBNAME
6840 SLIBPREF=$SLIBPREF
6841 SLIBSUF=$SLIBSUF
6842 EXESUF=$EXESUF
6843 EXTRA_VERSION=$extra_version
6844 CCDEP=$CCDEP
6845 CXXDEP=$CXXDEP
6846 CCDEP_FLAGS=$CCDEP_FLAGS
6847 ASDEP=$ASDEP
6848 ASDEP_FLAGS=$ASDEP_FLAGS
6849 X86ASMDEP=$X86ASMDEP
6850 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6851 CC_DEPFLAGS=$CC_DEPFLAGS
6852 AS_DEPFLAGS=$AS_DEPFLAGS
6853 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6854 HOSTCC=$host_cc
6855 HOSTLD=$host_ld
6856 HOSTCFLAGS=$host_cflags
6857 HOSTCPPFLAGS=$host_cppflags
6858 HOSTEXESUF=$HOSTEXESUF
6859 HOSTLDFLAGS=$host_ldflags
6860 HOSTEXTRALIBS=$host_extralibs
6861 DEPHOSTCC=$host_cc
6862 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6863 HOSTCCDEP=$HOSTCCDEP
6864 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6865 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6866 HOSTCC_C=$HOSTCC_C
6867 HOSTCC_O=$HOSTCC_O
6868 HOSTLD_O=$HOSTLD_O
6869 TARGET_EXEC=$target_exec $target_exec_args
6870 TARGET_PATH=$target_path
6871 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6872 CFLAGS-ffplay=${sdl2_cflags}
6873 CFLAGS_HEADERS=$CFLAGS_HEADERS
6874 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6875 EXTRALIBS=$extralibs
6876 COMPAT_OBJS=$compat_objs
6877 INSTALL=$install
6878 SLIBNAME=${SLIBNAME}
6879 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6880 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6881 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6882 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6883 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6884 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6885 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6886 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6887 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6888 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6889 NOREDZONE_FLAGS=$noredzone_flags
6890 LIBFUZZER_PATH=$libfuzzer_path
6891 IGNORE_TESTS=$ignore_tests
6892 EOF
6893
6894 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6895
6896 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6897     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6898 done
6899
6900 cat > $TMPH <<EOF
6901 /* Automatically generated by configure - do not modify! */
6902 #ifndef FFMPEG_CONFIG_H
6903 #define FFMPEG_CONFIG_H
6904 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6905 #define FFMPEG_LICENSE "$(c_escape $license)"
6906 #define CONFIG_THIS_YEAR 2017
6907 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6908 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6909 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6910 #define av_restrict $_restrict
6911 #define EXTERN_PREFIX "${extern_prefix}"
6912 #define EXTERN_ASM ${extern_prefix}
6913 #define BUILDSUF "$build_suffix"
6914 #define SLIBSUF "$SLIBSUF"
6915 #define HAVE_MMX2 HAVE_MMXEXT
6916 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6917 EOF
6918
6919 test -n "$assert_level" &&
6920     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6921
6922 test -n "$malloc_prefix" &&
6923     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6924
6925 if enabled x86asm; then
6926     append config_files $TMPASM
6927     cat > $TMPASM <<EOF
6928 ; Automatically generated by configure - do not modify!
6929 EOF
6930 fi
6931
6932 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6933
6934
6935 mkdir -p doc
6936 mkdir -p tests
6937 mkdir -p tests/api
6938 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6939
6940 print_config ARCH_   "$config_files" $ARCH_LIST
6941 print_config HAVE_   "$config_files" $HAVE_LIST
6942 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6943                                      $CONFIG_EXTRA      \
6944                                      $ALL_COMPONENTS    \
6945
6946 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6947 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6948
6949 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6950 cp_if_changed $TMPH config.h
6951 touch ffbuild/.config
6952
6953 enabled x86asm && cp_if_changed $TMPASM config.asm
6954
6955 cat > $TMPH <<EOF
6956 /* Generated by ffmpeg configure */
6957 #ifndef AVUTIL_AVCONFIG_H
6958 #define AVUTIL_AVCONFIG_H
6959 EOF
6960
6961 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6962
6963 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6964
6965 cp_if_changed $TMPH libavutil/avconfig.h
6966
6967 # generate the lists of enabled components
6968 print_enabled_components(){
6969     file=$1
6970     struct_name=$2
6971     name=$3
6972     shift 3
6973     echo "static const $struct_name * const $name[] = {" > $TMPH
6974     for c in $*; do
6975         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6976     done
6977     echo "    NULL };" >> $TMPH
6978     cp_if_changed $TMPH $file
6979 }
6980
6981 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6982 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6983
6984 # Settings for pkg-config files
6985
6986 cat > $TMPH <<EOF
6987 # Automatically generated by configure - do not modify!
6988 shared=$shared
6989 build_suffix=$build_suffix
6990 prefix=$prefix
6991 libdir=$libdir
6992 incdir=$incdir
6993 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6994 source_path=${source_path}
6995 LIBPREF=${LIBPREF}
6996 LIBSUF=${LIBSUF}
6997 extralibs_avutil="$avutil_extralibs"
6998 extralibs_avcodec="$avcodec_extralibs"
6999 extralibs_avformat="$avformat_extralibs"
7000 extralibs_avdevice="$avdevice_extralibs"
7001 extralibs_avfilter="$avfilter_extralibs"
7002 extralibs_avresample="$avresample_extralibs"
7003 extralibs_postproc="$postproc_extralibs"
7004 extralibs_swscale="$swscale_extralibs"
7005 extralibs_swresample="$swresample_extralibs"
7006 EOF
7007
7008 for lib in $LIBRARY_LIST; do
7009     lib_deps="$(eval echo \$${lib}_deps)"
7010     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7011 done
7012
7013 cp_if_changed $TMPH ffbuild/config.sh