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 libcelt_decoder_deps="libcelt"
2922 libfdk_aac_decoder_deps="libfdk_aac"
2923 libfdk_aac_encoder_deps="libfdk_aac"
2924 libfdk_aac_encoder_select="audio_frame_queue"
2925 libgme_demuxer_deps="libgme"
2926 libgsm_decoder_deps="libgsm"
2927 libgsm_encoder_deps="libgsm"
2928 libgsm_ms_decoder_deps="libgsm"
2929 libgsm_ms_encoder_deps="libgsm"
2930 libilbc_decoder_deps="libilbc"
2931 libilbc_encoder_deps="libilbc"
2932 libkvazaar_encoder_deps="libkvazaar"
2933 libmodplug_demuxer_deps="libmodplug"
2934 libmp3lame_encoder_deps="libmp3lame"
2935 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2936 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2937 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2938 libopencore_amrnb_encoder_select="audio_frame_queue"
2939 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2940 libopenh264_decoder_deps="libopenh264"
2941 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2942 libopenh264_encoder_deps="libopenh264"
2943 libopenjpeg_decoder_deps="libopenjpeg"
2944 libopenjpeg_encoder_deps="libopenjpeg"
2945 libopenmpt_demuxer_deps="libopenmpt"
2946 libopus_decoder_deps="libopus"
2947 libopus_encoder_deps="libopus"
2948 libopus_encoder_select="audio_frame_queue"
2949 librsvg_decoder_deps="librsvg"
2950 libshine_encoder_deps="libshine"
2951 libshine_encoder_select="audio_frame_queue"
2952 libspeex_decoder_deps="libspeex"
2953 libspeex_encoder_deps="libspeex"
2954 libspeex_encoder_select="audio_frame_queue"
2955 libtheora_encoder_deps="libtheora"
2956 libtwolame_encoder_deps="libtwolame"
2957 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2958 libvorbis_decoder_deps="libvorbis"
2959 libvorbis_encoder_deps="libvorbis libvorbisenc"
2960 libvorbis_encoder_select="audio_frame_queue"
2961 libvpx_vp8_decoder_deps="libvpx"
2962 libvpx_vp8_encoder_deps="libvpx"
2963 libvpx_vp9_decoder_deps="libvpx"
2964 libvpx_vp9_encoder_deps="libvpx"
2965 libwavpack_encoder_deps="libwavpack"
2966 libwavpack_encoder_select="audio_frame_queue"
2967 libwebp_encoder_deps="libwebp"
2968 libwebp_anim_encoder_deps="libwebp"
2969 libx262_encoder_deps="libx262"
2970 libx264_encoder_deps="libx264"
2971 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2972 libx264rgb_encoder_select="libx264_encoder"
2973 libx265_encoder_deps="libx265"
2974 libxavs_encoder_deps="libxavs"
2975 libxvid_encoder_deps="libxvid"
2976 libzvbi_teletext_decoder_deps="libzvbi"
2977 videotoolbox_suggest="coreservices"
2978 videotoolbox_deps="corefoundation coremedia corevideo"
2979 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2980
2981 # demuxers / muxers
2982 ac3_demuxer_select="ac3_parser"
2983 aiff_muxer_select="iso_media"
2984 asf_demuxer_select="riffdec"
2985 asf_o_demuxer_select="riffdec"
2986 asf_muxer_select="riffenc"
2987 asf_stream_muxer_select="asf_muxer"
2988 avi_demuxer_select="iso_media riffdec exif"
2989 avi_muxer_select="riffenc"
2990 caf_demuxer_select="iso_media riffdec"
2991 caf_muxer_select="iso_media"
2992 dash_muxer_select="mp4_muxer"
2993 dash_demuxer_deps="libxml2"
2994 dirac_demuxer_select="dirac_parser"
2995 dts_demuxer_select="dca_parser"
2996 dtshd_demuxer_select="dca_parser"
2997 dv_demuxer_select="dvprofile"
2998 dv_muxer_select="dvprofile"
2999 dxa_demuxer_select="riffdec"
3000 eac3_demuxer_select="ac3_parser"
3001 f4v_muxer_select="mov_muxer"
3002 fifo_muxer_deps="threads"
3003 flac_demuxer_select="flac_parser"
3004 hds_muxer_select="flv_muxer"
3005 hls_muxer_select="mpegts_muxer"
3006 hls_muxer_suggest="gcrypt openssl"
3007 image2_alias_pix_demuxer_select="image2_demuxer"
3008 image2_brender_pix_demuxer_select="image2_demuxer"
3009 ipod_muxer_select="mov_muxer"
3010 ismv_muxer_select="mov_muxer"
3011 matroska_audio_muxer_select="matroska_muxer"
3012 matroska_demuxer_select="iso_media riffdec"
3013 matroska_demuxer_suggest="bzlib lzo zlib"
3014 matroska_muxer_select="iso_media riffenc"
3015 mmf_muxer_select="riffenc"
3016 mov_demuxer_select="iso_media riffdec"
3017 mov_demuxer_suggest="zlib"
3018 mov_muxer_select="iso_media riffenc rtpenc_chain"
3019 mp3_demuxer_select="mpegaudio_parser"
3020 mp3_muxer_select="mpegaudioheader"
3021 mp4_muxer_select="mov_muxer"
3022 mpegts_demuxer_select="iso_media"
3023 mpegts_muxer_select="adts_muxer latm_muxer"
3024 mpegtsraw_demuxer_select="mpegts_demuxer"
3025 mxf_d10_muxer_select="mxf_muxer"
3026 mxf_opatom_muxer_select="mxf_muxer"
3027 nut_muxer_select="riffenc"
3028 nuv_demuxer_select="riffdec"
3029 oga_muxer_select="ogg_muxer"
3030 ogg_demuxer_select="dirac_parse"
3031 ogv_muxer_select="ogg_muxer"
3032 opus_muxer_select="ogg_muxer"
3033 psp_muxer_select="mov_muxer"
3034 rtp_demuxer_select="sdp_demuxer"
3035 rtp_muxer_select="golomb"
3036 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3037 rtsp_demuxer_select="http_protocol rtpdec"
3038 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3039 sap_demuxer_select="sdp_demuxer"
3040 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3041 sdp_demuxer_select="rtpdec"
3042 smoothstreaming_muxer_select="ismv_muxer"
3043 spdif_demuxer_select="adts_header"
3044 spdif_muxer_select="adts_header"
3045 spx_muxer_select="ogg_muxer"
3046 swf_demuxer_suggest="zlib"
3047 tak_demuxer_select="tak_parser"
3048 tg2_muxer_select="mov_muxer"
3049 tgp_muxer_select="mov_muxer"
3050 vobsub_demuxer_select="mpegps_demuxer"
3051 w64_demuxer_select="wav_demuxer"
3052 w64_muxer_select="wav_muxer"
3053 wav_demuxer_select="riffdec"
3054 wav_muxer_select="riffenc"
3055 webm_muxer_select="iso_media riffenc"
3056 webm_dash_manifest_demuxer_select="matroska_demuxer"
3057 wtv_demuxer_select="mpegts_demuxer riffdec"
3058 wtv_muxer_select="mpegts_muxer riffenc"
3059 xmv_demuxer_select="riffdec"
3060 xwma_demuxer_select="riffdec"
3061
3062 # indevs / outdevs
3063 alsa_indev_deps="alsa"
3064 alsa_outdev_deps="alsa"
3065 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3066 avfoundation_indev_suggest="coregraphics applicationservices"
3067 avfoundation_indev_extralibs="-framework Foundation"
3068 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3069 caca_outdev_deps="libcaca"
3070 decklink_deps_any="libdl LoadLibrary"
3071 decklink_indev_deps="decklink threads"
3072 decklink_indev_extralibs="-lstdc++"
3073 decklink_outdev_deps="decklink threads"
3074 decklink_outdev_extralibs="-lstdc++"
3075 libndi_newtek_indev_deps="libndi_newtek"
3076 libndi_newtek_indev_extralibs="-lndi"
3077 libndi_newtek_outdev_deps="libndi_newtek"
3078 libndi_newtek_outdev_extralibs="-lndi"
3079 dshow_indev_deps="IBaseFilter"
3080 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3081 fbdev_indev_deps="linux_fb_h"
3082 fbdev_outdev_deps="linux_fb_h"
3083 gdigrab_indev_deps="CreateDIBSection"
3084 gdigrab_indev_extralibs="-lgdi32"
3085 gdigrab_indev_select="bmp_decoder"
3086 iec61883_indev_deps="libiec61883"
3087 jack_indev_deps="libjack"
3088 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3089 kmsgrab_indev_deps="libdrm"
3090 lavfi_indev_deps="avfilter"
3091 libcdio_indev_deps="libcdio"
3092 libdc1394_indev_deps="libdc1394"
3093 openal_indev_deps="openal"
3094 opengl_outdev_deps="opengl"
3095 oss_indev_deps_any="sys_soundcard_h"
3096 oss_outdev_deps_any="sys_soundcard_h"
3097 pulse_indev_deps="libpulse"
3098 pulse_outdev_deps="libpulse"
3099 sdl2_outdev_deps="sdl2"
3100 sndio_indev_deps="sndio"
3101 sndio_outdev_deps="sndio"
3102 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3103 v4l2_indev_suggest="libv4l2"
3104 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3105 v4l2_outdev_suggest="libv4l2"
3106 vfwcap_indev_deps="vfw32 vfwcap_defines"
3107 xcbgrab_indev_deps="libxcb"
3108 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3109 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3110 xv_outdev_extralibs="-lXv -lX11 -lXext"
3111
3112 # protocols
3113 async_protocol_deps="threads"
3114 bluray_protocol_deps="libbluray"
3115 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3116 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3117 ffrtmpcrypt_protocol_select="tcp_protocol"
3118 ffrtmphttp_protocol_conflict="librtmp_protocol"
3119 ffrtmphttp_protocol_select="http_protocol"
3120 ftp_protocol_select="tcp_protocol"
3121 gopher_protocol_select="network"
3122 http_protocol_select="tcp_protocol"
3123 http_protocol_suggest="zlib"
3124 httpproxy_protocol_select="tcp_protocol"
3125 httpproxy_protocol_suggest="zlib"
3126 https_protocol_select="tls_protocol"
3127 https_protocol_suggest="zlib"
3128 icecast_protocol_select="http_protocol"
3129 librtmp_protocol_deps="librtmp"
3130 librtmpe_protocol_deps="librtmp"
3131 librtmps_protocol_deps="librtmp"
3132 librtmpt_protocol_deps="librtmp"
3133 librtmpte_protocol_deps="librtmp"
3134 libsmbclient_protocol_deps="libsmbclient gplv3"
3135 libssh_protocol_deps="libssh"
3136 mmsh_protocol_select="http_protocol"
3137 mmst_protocol_select="network"
3138 rtmp_protocol_conflict="librtmp_protocol"
3139 rtmp_protocol_select="tcp_protocol"
3140 rtmp_protocol_suggest="zlib"
3141 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3142 rtmpe_protocol_suggest="zlib"
3143 rtmps_protocol_conflict="librtmp_protocol"
3144 rtmps_protocol_select="tls_protocol"
3145 rtmps_protocol_suggest="zlib"
3146 rtmpt_protocol_select="ffrtmphttp_protocol"
3147 rtmpt_protocol_suggest="zlib"
3148 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3149 rtmpte_protocol_suggest="zlib"
3150 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3151 rtmpts_protocol_suggest="zlib"
3152 rtp_protocol_select="udp_protocol"
3153 schannel_conflict="openssl gnutls"
3154 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3155 sctp_protocol_select="network"
3156 securetransport_conflict="openssl gnutls"
3157 srtp_protocol_select="rtp_protocol srtp"
3158 tcp_protocol_select="network"
3159 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3160 tls_protocol_select="tcp_protocol"
3161 udp_protocol_select="network"
3162 udplite_protocol_select="network"
3163 unix_protocol_deps="sys_un_h"
3164 unix_protocol_select="network"
3165
3166 # filters
3167 afftfilt_filter_deps="avcodec"
3168 afftfilt_filter_select="fft"
3169 afir_filter_deps="avcodec"
3170 afir_filter_select="fft"
3171 amovie_filter_deps="avcodec avformat"
3172 aresample_filter_deps="swresample"
3173 ass_filter_deps="libass"
3174 atempo_filter_deps="avcodec"
3175 atempo_filter_select="rdft"
3176 azmq_filter_deps="libzmq"
3177 blackframe_filter_deps="gpl"
3178 boxblur_filter_deps="gpl"
3179 bs2b_filter_deps="libbs2b"
3180 colormatrix_filter_deps="gpl"
3181 coreimage_filter_deps="coreimage appkit"
3182 coreimage_filter_extralibs="-framework OpenGL"
3183 coreimagesrc_filter_deps="coreimage appkit"
3184 coreimagesrc_filter_extralibs="-framework OpenGL"
3185 cover_rect_filter_deps="avcodec avformat gpl"
3186 cropdetect_filter_deps="gpl"
3187 deinterlace_qsv_filter_deps="libmfx"
3188 deinterlace_vaapi_filter_deps="vaapi"
3189 delogo_filter_deps="gpl"
3190 deshake_filter_select="pixelutils"
3191 deshake_filter_suggest="opencl"
3192 drawtext_filter_deps="libfreetype"
3193 drawtext_filter_suggest="libfontconfig libfribidi"
3194 elbg_filter_deps="avcodec"
3195 eq_filter_deps="gpl"
3196 fftfilt_filter_deps="avcodec"
3197 fftfilt_filter_select="rdft"
3198 find_rect_filter_deps="avcodec avformat gpl"
3199 firequalizer_filter_deps="avcodec"
3200 firequalizer_filter_select="rdft"
3201 flite_filter_deps="libflite"
3202 framerate_filter_select="pixelutils"
3203 frei0r_filter_deps="frei0r libdl"
3204 frei0r_src_filter_deps="frei0r libdl"
3205 fspp_filter_deps="gpl"
3206 geq_filter_deps="gpl"
3207 histeq_filter_deps="gpl"
3208 hqdn3d_filter_deps="gpl"
3209 interlace_filter_deps="gpl"
3210 kerndeint_filter_deps="gpl"
3211 ladspa_filter_deps="ladspa libdl"
3212 mcdeint_filter_deps="avcodec gpl"
3213 movie_filter_deps="avcodec avformat"
3214 mpdecimate_filter_deps="gpl"
3215 mpdecimate_filter_select="pixelutils"
3216 mptestsrc_filter_deps="gpl"
3217 negate_filter_deps="lut_filter"
3218 nnedi_filter_deps="gpl"
3219 ocr_filter_deps="libtesseract"
3220 ocv_filter_deps="libopencv"
3221 overlay_qsv_filter_deps="libmfx"
3222 overlay_qsv_filter_select="qsvvpp"
3223 owdenoise_filter_deps="gpl"
3224 pan_filter_deps="swresample"
3225 perspective_filter_deps="gpl"
3226 phase_filter_deps="gpl"
3227 pp7_filter_deps="gpl"
3228 pp_filter_deps="gpl postproc"
3229 pullup_filter_deps="gpl"
3230 removelogo_filter_deps="avcodec avformat swscale"
3231 repeatfields_filter_deps="gpl"
3232 resample_filter_deps="avresample"
3233 rubberband_filter_deps="librubberband"
3234 sab_filter_deps="gpl swscale"
3235 scale2ref_filter_deps="swscale"
3236 scale_filter_deps="swscale"
3237 scale_qsv_filter_deps="libmfx"
3238 select_filter_select="pixelutils"
3239 showcqt_filter_deps="avcodec avformat swscale"
3240 showcqt_filter_suggest="libfontconfig libfreetype"
3241 showcqt_filter_select="fft"
3242 showfreqs_filter_deps="avcodec"
3243 showfreqs_filter_select="fft"
3244 showspectrum_filter_deps="avcodec"
3245 showspectrum_filter_select="fft"
3246 showspectrumpic_filter_deps="avcodec"
3247 showspectrumpic_filter_select="fft"
3248 signature_filter_deps="gpl avcodec avformat"
3249 smartblur_filter_deps="gpl swscale"
3250 sofalizer_filter_deps="libmysofa avcodec"
3251 sofalizer_filter_select="fft"
3252 spectrumsynth_filter_deps="avcodec"
3253 spectrumsynth_filter_select="fft"
3254 spp_filter_deps="gpl avcodec"
3255 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3256 stereo3d_filter_deps="gpl"
3257 subtitles_filter_deps="avformat avcodec libass"
3258 super2xsai_filter_deps="gpl"
3259 pixfmts_super2xsai_test_deps="super2xsai_filter"
3260 tinterlace_filter_deps="gpl"
3261 tinterlace_merge_test_deps="tinterlace_filter"
3262 tinterlace_pad_test_deps="tinterlace_filter"
3263 tonemap_filter_deps="const_nan"
3264 uspp_filter_deps="gpl avcodec"
3265 unsharp_filter_suggest="opencl"
3266 vaguedenoiser_filter_deps="gpl"
3267 vidstabdetect_filter_deps="libvidstab"
3268 vidstabtransform_filter_deps="libvidstab"
3269 libvmaf_filter_deps="libvmaf"
3270 zmq_filter_deps="libzmq"
3271 zoompan_filter_deps="swscale"
3272 zscale_filter_deps="libzimg const_nan"
3273 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3274 vpp_qsv_filter_deps="libmfx"
3275 vpp_qsv_filter_select="qsvvpp"
3276
3277 # examples
3278 avio_dir_cmd_deps="avformat avutil"
3279 avio_reading_deps="avformat avcodec avutil"
3280 decode_audio_example_deps="avcodec avutil"
3281 decode_video_example_deps="avcodec avutil"
3282 demuxing_decoding_example_deps="avcodec avformat avutil"
3283 encode_audio_example_deps="avcodec avutil"
3284 encode_video_example_deps="avcodec avutil"
3285 extract_mvs_example_deps="avcodec avformat avutil"
3286 filter_audio_example_deps="avfilter avutil"
3287 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3288 filtering_video_example_deps="avfilter avcodec avformat avutil"
3289 http_multiclient_example_deps="avformat avutil fork"
3290 hw_decode_example_deps="avcodec avformat avutil"
3291 metadata_example_deps="avformat avutil"
3292 muxing_example_deps="avcodec avformat avutil swscale"
3293 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3294 remuxing_example_deps="avcodec avformat avutil"
3295 resampling_audio_example_deps="avutil swresample"
3296 scaling_video_example_deps="avutil swscale"
3297 transcode_aac_example_deps="avcodec avformat swresample"
3298 transcoding_example_deps="avfilter avcodec avformat avutil"
3299
3300 # EXTRALIBS_LIST
3301 cpu_init_extralibs="pthreads_extralibs"
3302 cws2fws_extralibs="zlib_extralibs"
3303
3304 # libraries, in linking order
3305 avcodec_deps="avutil"
3306 avcodec_suggest="libm"
3307 avcodec_select="null_bsf"
3308 avdevice_deps="avformat avcodec avutil"
3309 avdevice_suggest="libm"
3310 avfilter_deps="avutil"
3311 avfilter_suggest="libm"
3312 avformat_deps="avcodec avutil"
3313 avformat_suggest="libm network zlib"
3314 avresample_deps="avutil"
3315 avresample_suggest="libm"
3316 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3317 postproc_deps="avutil gpl"
3318 postproc_suggest="libm"
3319 swresample_deps="avutil"
3320 swresample_suggest="libm libsoxr"
3321 swscale_deps="avutil"
3322 swscale_suggest="libm"
3323
3324 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3325 avfilter_extralibs="pthreads_extralibs"
3326 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3327
3328 # programs
3329 ffmpeg_deps="avcodec avfilter avformat swresample"
3330 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3331                null_filter
3332                trim_filter"
3333 ffmpeg_suggest="ole32 psapi shell32"
3334 ffplay_deps="avcodec avformat swscale swresample sdl2"
3335 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3336 ffplay_suggest="shell32"
3337 ffprobe_deps="avcodec avformat"
3338 ffprobe_suggest="shell32"
3339 ffserver_deps="avformat fork sarestart"
3340 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3341
3342 # documentation
3343 podpages_deps="perl"
3344 manpages_deps="perl pod2man"
3345 htmlpages_deps="perl"
3346 htmlpages_deps_any="makeinfo_html texi2html"
3347 txtpages_deps="perl makeinfo"
3348 doc_deps_any="manpages htmlpages podpages txtpages"
3349
3350 # default parameters
3351
3352 logfile="ffbuild/config.log"
3353
3354 # installation paths
3355 prefix_default="/usr/local"
3356 bindir_default='${prefix}/bin'
3357 datadir_default='${prefix}/share/ffmpeg'
3358 docdir_default='${prefix}/share/doc/ffmpeg'
3359 incdir_default='${prefix}/include'
3360 libdir_default='${prefix}/lib'
3361 mandir_default='${prefix}/share/man'
3362
3363 # toolchain
3364 ar_default="ar"
3365 cc_default="gcc"
3366 cxx_default="g++"
3367 host_cc_default="gcc"
3368 doxygen_default="doxygen"
3369 install="install"
3370 ln_s_default="ln -s -f"
3371 nm_default="nm -g"
3372 pkg_config_default=pkg-config
3373 ranlib_default="ranlib"
3374 strip_default="strip"
3375 version_script='--version-script'
3376 x86asmexe_default="nasm"
3377 windres_default="windres"
3378 nvcc_default="nvcc"
3379 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3380 striptype="direct"
3381
3382 # OS
3383 target_os_default=$(tolower $(uname -s))
3384 host_os=$target_os_default
3385
3386 # machine
3387 if test "$target_os_default" = aix; then
3388     arch_default=$(uname -p)
3389     strip_default="strip -X32_64"
3390 else
3391     arch_default=$(uname -m)
3392 fi
3393 cpu="generic"
3394 intrinsics="none"
3395
3396 # configurable options
3397 enable $PROGRAM_LIST
3398 enable $DOCUMENT_LIST
3399 enable $EXAMPLE_LIST
3400 enable $(filter_out avresample $LIBRARY_LIST)
3401 enable stripping
3402
3403 enable asm
3404 enable debug
3405 enable doc
3406 enable faan faandct faanidct
3407 enable optimizations
3408 enable runtime_cpudetect
3409 enable safe_bitstream_reader
3410 enable static
3411 enable swscale_alpha
3412 enable valgrind_backtrace
3413
3414 sws_max_filter_size_default=256
3415 set_default sws_max_filter_size
3416
3417 # internal components are enabled by default
3418 enable $EXTRALIBS_LIST
3419
3420 # Avoid external, non-system, libraries getting enabled by dependency resolution
3421 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3422
3423 # build settings
3424 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3425 LIBPREF="lib"
3426 LIBSUF=".a"
3427 FULLNAME='$(NAME)$(BUILDSUF)'
3428 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3429 SLIBPREF="lib"
3430 SLIBSUF=".so"
3431 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3432 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3433 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3434 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3435 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3436 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3437 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3438
3439 asflags_filter=echo
3440 cflags_filter=echo
3441 ldflags_filter=echo
3442
3443 AS_C='-c'
3444 AS_O='-o $@'
3445 CC_C='-c'
3446 CC_E='-E -o $@'
3447 CC_O='-o $@'
3448 CXX_C='-c'
3449 CXX_O='-o $@'
3450 OBJCC_C='-c'
3451 OBJCC_E='-E -o $@'
3452 OBJCC_O='-o $@'
3453 X86ASM_O='-o $@'
3454 LD_O='-o $@'
3455 LD_LIB='-l%'
3456 LD_PATH='-L'
3457 HOSTCC_C='-c'
3458 HOSTCC_E='-E -o $@'
3459 HOSTCC_O='-o $@'
3460 HOSTLD_O='-o $@'
3461 NVCC_C='-c'
3462 NVCC_O='-o $@'
3463
3464 host_extralibs='-lm'
3465 host_cflags_filter=echo
3466 host_ldflags_filter=echo
3467
3468 target_path='$(CURDIR)'
3469
3470 # since the object filename is not given with the -MM flag, the compiler
3471 # is only able to print the basename, and we must add the path ourselves
3472 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3473 DEPFLAGS='-MM'
3474
3475 mkdir -p ffbuild
3476
3477 # find source path
3478 if test -f configure; then
3479     source_path=.
3480 else
3481     source_path=$(cd $(dirname "$0"); pwd)
3482     case "$source_path" in
3483         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3484     esac
3485     test -e "$source_path/config.h" &&
3486         die "Out of tree builds are impossible with config.h in source dir."
3487 fi
3488
3489 for v in "$@"; do
3490     r=${v#*=}
3491     l=${v%"$r"}
3492     r=$(sh_quote "$r")
3493     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3494 done
3495
3496 find_things(){
3497     thing=$1
3498     pattern=$2
3499     file=$source_path/$3
3500     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3501 }
3502
3503 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3504 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3505 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3506 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3507 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3508 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3509 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3510 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3511 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3512
3513 find_things_extern(){
3514     thing=$1
3515     pattern=$2
3516     file=$source_path/$3
3517     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3518 }
3519
3520 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3521 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3522
3523 AVCODEC_COMPONENTS_LIST="
3524     $BSF_LIST
3525     $DECODER_LIST
3526     $ENCODER_LIST
3527     $HWACCEL_LIST
3528     $PARSER_LIST
3529 "
3530
3531 AVDEVICE_COMPONENTS_LIST="
3532     $INDEV_LIST
3533     $OUTDEV_LIST
3534 "
3535
3536 AVFILTER_COMPONENTS_LIST="
3537     $FILTER_LIST
3538 "
3539
3540 AVFORMAT_COMPONENTS_LIST="
3541     $DEMUXER_LIST
3542     $MUXER_LIST
3543     $PROTOCOL_LIST
3544 "
3545
3546 ALL_COMPONENTS="
3547     $AVCODEC_COMPONENTS_LIST
3548     $AVDEVICE_COMPONENTS_LIST
3549     $AVFILTER_COMPONENTS_LIST
3550     $AVFORMAT_COMPONENTS_LIST
3551 "
3552
3553 for n in $COMPONENT_LIST; do
3554     v=$(toupper ${n%s})_LIST
3555     eval enable \$$v
3556     eval ${n}_if_any="\$$v"
3557 done
3558
3559 enable $ARCH_EXT_LIST
3560
3561 die_unknown(){
3562     echo "Unknown option \"$1\"."
3563     echo "See $0 --help for available options."
3564     exit 1
3565 }
3566
3567 print_in_columns() {
3568     cols=$(expr $ncols / 24)
3569     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3570 }
3571
3572 show_list() {
3573     suffix=_$1
3574     shift
3575     echo $* | sed s/$suffix//g | print_in_columns
3576     exit 0
3577 }
3578
3579 rand_list(){
3580     IFS=', '
3581     set -- $*
3582     unset IFS
3583     for thing; do
3584         comp=${thing%:*}
3585         prob=${thing#$comp}
3586         prob=${prob#:}
3587         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3588         echo "prob ${prob:-0.5}"
3589         printf '%s\n' $comp
3590     done
3591 }
3592
3593 do_random(){
3594     action=$1
3595     shift
3596     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3597     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3598 }
3599
3600 for opt do
3601     optval="${opt#*=}"
3602     case "$opt" in
3603         --extra-ldflags=*)
3604             add_ldflags $optval
3605         ;;
3606         --extra-ldexeflags=*)
3607             add_ldexeflags $optval
3608         ;;
3609         --extra-ldsoflags=*)
3610             add_ldsoflags $optval
3611         ;;
3612         --extra-ldlibflags=*)
3613             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3614                  "removed in the future. Use --extra-ldsoflags instead."
3615             add_ldsoflags $optval
3616         ;;
3617         --extra-libs=*)
3618             add_extralibs $optval
3619         ;;
3620         --disable-devices)
3621             disable $INDEV_LIST $OUTDEV_LIST
3622         ;;
3623         --enable-debug=*)
3624             debuglevel="$optval"
3625         ;;
3626         --disable-programs)
3627             disable $PROGRAM_LIST
3628         ;;
3629         --disable-everything)
3630             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3631         ;;
3632         --disable-all)
3633             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3634             disable $LIBRARY_LIST $PROGRAM_LIST doc
3635             enable avutil
3636         ;;
3637         --enable-random|--disable-random)
3638             action=${opt%%-random}
3639             do_random ${action#--} $COMPONENT_LIST
3640         ;;
3641         --enable-random=*|--disable-random=*)
3642             action=${opt%%-random=*}
3643             do_random ${action#--} $optval
3644         ;;
3645         --enable-sdl)
3646             enable sdl2
3647         ;;
3648         --enable-*=*|--disable-*=*)
3649             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3650             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3651             eval list=\$$(toupper $thing)_LIST
3652             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3653             list=$(filter "$name" $list)
3654             [ "$list" = "" ] && warn "Option $opt did not match anything"
3655             $action $list
3656         ;;
3657         --enable-yasm|--disable-yasm)
3658             warn "The ${opt} option is only provided for compatibility and will be\n"\
3659                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3660             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3661         ;;
3662         --yasmexe=*)
3663             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3664                  "removed in the future. Use --x86asmexe instead."
3665             x86asmexe="$optval"
3666         ;;
3667         --enable-?*|--disable-?*)
3668             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3669             if is_in $option $COMPONENT_LIST; then
3670                 test $action = disable && action=unset
3671                 eval $action \$$(toupper ${option%s})_LIST
3672             elif is_in $option $CMDLINE_SELECT; then
3673                 $action $option
3674             else
3675                 die_unknown $opt
3676             fi
3677         ;;
3678         --list-*)
3679             NAME="${opt#--list-}"
3680             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3681             NAME=${NAME%s}
3682             eval show_list $NAME \$$(toupper $NAME)_LIST
3683         ;;
3684         --help|-h) show_help
3685         ;;
3686         --quiet|-q) quiet=yes
3687         ;;
3688         --fatal-warnings) enable fatal_warnings
3689         ;;
3690         --libfuzzer=*)
3691             libfuzzer_path="$optval"
3692         ;;
3693         *)
3694             optname="${opt%%=*}"
3695             optname="${optname#--}"
3696             optname=$(echo "$optname" | sed 's/-/_/g')
3697             if is_in $optname $CMDLINE_SET; then
3698                 eval $optname='$optval'
3699             elif is_in $optname $CMDLINE_APPEND; then
3700                 append $optname "$optval"
3701             else
3702                 die_unknown $opt
3703             fi
3704         ;;
3705     esac
3706 done
3707
3708 for e in $env; do
3709     eval "export $e"
3710 done
3711
3712 if disabled autodetect; then
3713
3714     # Unless iconv is explicitely disabled by the user, we still want to probe
3715     # for the iconv from the libc.
3716     disabled iconv || enable libc_iconv
3717
3718     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3719     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3720 fi
3721 # Mark specifically enabled, but normally autodetected libraries as requested.
3722 for lib in $AUTODETECT_LIBS; do
3723     enabled $lib && request $lib
3724 done
3725 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3726 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3727 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3728
3729 disabled logging && logfile=/dev/null
3730
3731 # we need to build at least one lib type
3732 if ! enabled_any static shared; then
3733     cat <<EOF
3734 At least one library type must be built.
3735 Specify --enable-static to build the static libraries or --enable-shared to
3736 build the shared libraries as well. To only build the shared libraries specify
3737 --disable-static in addition to --enable-shared.
3738 EOF
3739     exit 1
3740 fi
3741
3742 die_license_disabled() {
3743     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3744 }
3745
3746 die_license_disabled_gpl() {
3747     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3748 }
3749
3750 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3751 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3752
3753 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3754 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3755
3756 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3757
3758 enabled_all gnutls openssl &&
3759     die "GnuTLS and OpenSSL must not be enabled at the same time."
3760
3761 # Disable all the library-specific components if the library itself
3762 # is disabled, see AVCODEC_LIST and following _LIST variables.
3763
3764 disable_components(){
3765     disabled ${1} && disable $(
3766         eval components="\$$(toupper ${1})_COMPONENTS"
3767         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3768     )
3769 }
3770
3771 map 'disable_components $v' $LIBRARY_LIST
3772
3773 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3774 set >> $logfile
3775
3776 test -n "$valgrind" && toolchain="valgrind-memcheck"
3777
3778 enabled ossfuzz && {
3779     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3780     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3781 }
3782
3783 case "$toolchain" in
3784     *-asan)
3785         cc_default="${toolchain%-asan}"
3786         add_cflags  -fsanitize=address
3787         add_ldflags -fsanitize=address
3788     ;;
3789     *-msan)
3790         cc_default="${toolchain%-msan}"
3791         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3792         add_ldflags -fsanitize=memory
3793     ;;
3794     *-tsan)
3795         cc_default="${toolchain%-tsan}"
3796         add_cflags  -fsanitize=thread -fPIE
3797         add_ldflags -fsanitize=thread -pie
3798         case "$toolchain" in
3799             gcc-tsan)
3800                 add_cflags  -fPIC
3801                 add_ldflags -fPIC
3802                 ;;
3803         esac
3804     ;;
3805     *-usan)
3806         cc_default="${toolchain%-usan}"
3807         add_cflags  -fsanitize=undefined
3808         add_ldflags -fsanitize=undefined
3809     ;;
3810     valgrind-*)
3811         target_exec_default="valgrind"
3812         case "$toolchain" in
3813             valgrind-massif)
3814                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3815                 ;;
3816             valgrind-memcheck)
3817                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3818                 ;;
3819         esac
3820     ;;
3821     msvc)
3822         # Check whether the current MSVC version needs the C99 converter.
3823         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3824         # support enough of C99 to build ffmpeg. Default to the new
3825         # behaviour if the regexp was unable to match anything, since this
3826         # successfully parses the version number of existing supported
3827         # versions that require the converter (MSVC 2010 and 2012).
3828         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3829         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3830             cc_default="cl"
3831             cxx_default="cl"
3832         else
3833             cc_default="c99wrap cl"
3834             cxx_default="c99wrap cl"
3835         fi
3836         ld_default="$source_path/compat/windows/mslink"
3837         nm_default="dumpbin -symbols"
3838         ar_default="lib"
3839         case "$arch" in
3840         aarch64|arm64)
3841             as_default="armasm64"
3842             ;;
3843         arm*)
3844             as_default="armasm"
3845             ;;
3846         esac
3847         target_os_default="win32"
3848         # Use a relative path for TMPDIR. This makes sure all the
3849         # ffconf temp files are written with a relative path, avoiding
3850         # issues with msys/win32 path conversion for MSVC parameters
3851         # such as -Fo<file> or -out:<file>.
3852         TMPDIR=.
3853     ;;
3854     icl)
3855         cc_default="icl"
3856         ld_default="xilink"
3857         nm_default="dumpbin -symbols"
3858         ar_default="xilib"
3859         target_os_default="win32"
3860         TMPDIR=.
3861     ;;
3862     gcov)
3863         add_cflags  -fprofile-arcs -ftest-coverage
3864         add_ldflags -fprofile-arcs -ftest-coverage
3865     ;;
3866     llvm-cov)
3867         add_cflags -fprofile-arcs -ftest-coverage
3868         add_ldflags --coverage
3869     ;;
3870     hardened)
3871         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3872         add_cflags   -fno-strict-overflow -fstack-protector-all
3873         add_ldflags  -Wl,-z,relro -Wl,-z,now
3874         add_cflags   -fPIE
3875         add_ldexeflags -fPIE -pie
3876     ;;
3877     ?*)
3878         die "Unknown toolchain $toolchain"
3879     ;;
3880 esac
3881
3882 test -n "$cross_prefix" && enable cross_compile
3883
3884 if enabled cross_compile; then
3885     test -n "$arch" && test -n "$target_os" ||
3886         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3887 fi
3888
3889 ar_default="${cross_prefix}${ar_default}"
3890 cc_default="${cross_prefix}${cc_default}"
3891 cxx_default="${cross_prefix}${cxx_default}"
3892 nm_default="${cross_prefix}${nm_default}"
3893 pkg_config_default="${cross_prefix}${pkg_config_default}"
3894 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3895     ranlib_default="${cross_prefix}${ranlib_default} -D"
3896 else
3897     ranlib_default="${cross_prefix}${ranlib_default}"
3898 fi
3899 strip_default="${cross_prefix}${strip_default}"
3900 windres_default="${cross_prefix}${windres_default}"
3901
3902 sysinclude_default="${sysroot}/usr/include"
3903
3904 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3905     target_exec target_os x86asmexe nvcc
3906 enabled cross_compile || host_cc_default=$cc
3907 set_default host_cc
3908
3909 pkg_config_fail_message=""
3910 if ! $pkg_config --version >/dev/null 2>&1; then
3911     warn "$pkg_config not found, library detection may fail."
3912     pkg_config=false
3913 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3914     pkg_config_fail_message="
3915 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3916 fi
3917
3918 if test $doxygen != $doxygen_default && \
3919   ! $doxygen --version >/dev/null 2>&1; then
3920     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3921 fi
3922
3923 exesuf() {
3924     case $1 in
3925         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3926     esac
3927 }
3928
3929 EXESUF=$(exesuf $target_os)
3930 HOSTEXESUF=$(exesuf $host_os)
3931
3932 # set temporary file name
3933 : ${TMPDIR:=$TEMPDIR}
3934 : ${TMPDIR:=$TMP}
3935 : ${TMPDIR:=/tmp}
3936
3937 if [ -n "$tempprefix" ] ; then
3938     mktemp(){
3939         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3940         echo "$tmpname"
3941         mkdir "$tmpname"
3942     }
3943 elif ! check_cmd mktemp -u XXXXXX; then
3944     # simple replacement for missing mktemp
3945     # NOT SAFE FOR GENERAL USE
3946     mktemp(){
3947         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3948         echo "$tmpname"
3949         mkdir "$tmpname"
3950     }
3951 fi
3952
3953 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3954     die "Unable to create temporary directory in $TMPDIR."
3955
3956 tmpfile(){
3957     tmp="${FFTMPDIR}/test"$2
3958     (set -C; exec > $tmp) 2> /dev/null ||
3959         die "Unable to create temporary file in $FFTMPDIR."
3960     eval $1=$tmp
3961 }
3962
3963 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3964 trap 'exit 2' INT
3965
3966 tmpfile TMPASM .asm
3967 tmpfile TMPC   .c
3968 tmpfile TMPCPP .cpp
3969 tmpfile TMPE   $EXESUF
3970 tmpfile TMPH   .h
3971 tmpfile TMPM   .m
3972 tmpfile TMPO   .o
3973 tmpfile TMPS   .S
3974 tmpfile TMPSH  .sh
3975 tmpfile TMPV   .ver
3976
3977 unset -f mktemp
3978
3979 chmod +x $TMPE
3980
3981 # make sure we can execute files in $TMPDIR
3982 cat > $TMPSH 2>> $logfile <<EOF
3983 #! /bin/sh
3984 EOF
3985 chmod +x $TMPSH >> $logfile 2>&1
3986 if ! $TMPSH >> $logfile 2>&1; then
3987     cat <<EOF
3988 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3989 variable to another directory and make sure that it is not mounted noexec.
3990 EOF
3991     die "Sanity test failed."
3992 fi
3993
3994 armasm_flags(){
3995     for flag; do
3996         case $flag in
3997             # Filter out MSVC cl.exe options from cflags that shouldn't
3998             # be passed to gas-preprocessor
3999             -M[TD]*)                                            ;;
4000             *)                  echo $flag                      ;;
4001         esac
4002    done
4003 }
4004
4005 cparser_flags(){
4006     for flag; do
4007         case $flag in
4008             -Wno-switch)             echo -Wno-switch-enum ;;
4009             -Wno-format-zero-length) ;;
4010             -Wdisabled-optimization) ;;
4011             -Wno-pointer-sign)       echo -Wno-other ;;
4012             *)                       echo $flag ;;
4013         esac
4014     done
4015 }
4016
4017 msvc_common_flags(){
4018     for flag; do
4019         case $flag in
4020             # In addition to specifying certain flags under the compiler
4021             # specific filters, they must be specified here as well or else the
4022             # generic catch all at the bottom will print the original flag.
4023             -Wall)                ;;
4024             -Wextra)              ;;
4025             -std=c99)             ;;
4026             # Common flags
4027             -fomit-frame-pointer) ;;
4028             -g)                   echo -Z7 ;;
4029             -fno-math-errno)      ;;
4030             -fno-common)          ;;
4031             -fno-signed-zeros)    ;;
4032             -fPIC)                ;;
4033             -mthumb)              ;;
4034             -march=*)             ;;
4035             -lz)                  echo zlib.lib ;;
4036             -lx264)               echo libx264.lib ;;
4037             -lstdc++)             ;;
4038             -l*)                  echo ${flag#-l}.lib ;;
4039             -LARGEADDRESSAWARE)   echo $flag ;;
4040             -L*)                  echo -libpath:${flag#-L} ;;
4041             *)                    echo $flag ;;
4042         esac
4043     done
4044 }
4045
4046 msvc_flags(){
4047     msvc_common_flags "$@"
4048     for flag; do
4049         case $flag in
4050             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4051                                        -wd4554 ;;
4052             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4053                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4054                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4055                                        -wd4307 \
4056                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4057         esac
4058     done
4059 }
4060
4061 icl_flags(){
4062     msvc_common_flags "$@"
4063     for flag; do
4064         case $flag in
4065             # Despite what Intel's documentation says -Wall, which is supported
4066             # on Windows, does enable remarks so disable them here.
4067             -Wall)                echo $flag -Qdiag-disable:remark ;;
4068             -std=c99)             echo -Qstd=c99 ;;
4069             -flto)                echo -ipo ;;
4070         esac
4071     done
4072 }
4073
4074 icc_flags(){
4075     for flag; do
4076         case $flag in
4077             -flto)                echo -ipo ;;
4078             *)                    echo $flag ;;
4079         esac
4080     done
4081 }
4082
4083 suncc_flags(){
4084     for flag; do
4085         case $flag in
4086             -march=*|-mcpu=*)
4087                 case "${flag#*=}" in
4088                     native)                   echo -xtarget=native       ;;
4089                     v9|niagara)               echo -xarch=sparc          ;;
4090                     ultrasparc)               echo -xarch=sparcvis       ;;
4091                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4092                     i586|pentium)             echo -xchip=pentium        ;;
4093                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4094                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4095                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4096                     pentium4*)          echo -xtarget=pentium4           ;;
4097                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4098                     *-sse3)             echo -xarch=sse3                 ;;
4099                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4100                     bonnell)                   echo -xarch=ssse3         ;;
4101                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4102                     westmere)                  echo -xtarget=westmere    ;;
4103                     silvermont)                echo -xarch=sse4_2        ;;
4104                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4105                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4106                                                echo -xarch=avx           ;;
4107                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4108                     btver1)                    echo -xarch=amdsse4a      ;;
4109                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4110                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4111                     k8|opteron|athlon64|athlon-fx)
4112                                                echo -xarch=sse2a         ;;
4113                     athlon*)                   echo -xarch=pentium_proa  ;;
4114                 esac
4115                 ;;
4116             -std=c99)             echo -xc99              ;;
4117             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4118             -fPIC)                echo -KPIC -xcode=pic32 ;;
4119             -W*,*)                echo $flag              ;;
4120             -f*-*|-W*|-mimpure-text)                      ;;
4121             -shared)              echo -G                 ;;
4122             *)                    echo $flag              ;;
4123         esac
4124     done
4125 }
4126
4127 probe_cc(){
4128     pfx=$1
4129     _cc=$2
4130     first=$3
4131
4132     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4133     unset _ld_o _ldflags _ld_lib _ld_path
4134     unset _depflags _DEPCMD _DEPFLAGS
4135     _flags_filter=echo
4136
4137     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4138         true # no-op to avoid reading stdin in following checks
4139     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4140         _type=llvm_gcc
4141         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4142         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4143         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4144         _cflags_speed='-O3'
4145         _cflags_size='-Os'
4146     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4147         _type=gcc
4148         gcc_version=$($_cc --version | head -n1)
4149         gcc_basever=$($_cc -dumpversion)
4150         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4151         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4152         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4153         case $gcc_basever in
4154             2) ;;
4155             2.*) ;;
4156             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4157         esac
4158         if [ "$first" = true ]; then
4159             case $gcc_basever in
4160                 4.2*)
4161                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4162             esac
4163         fi
4164         _cflags_speed='-O3'
4165         _cflags_size='-Os'
4166     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4167         _type=icc
4168         _ident=$($_cc --version | head -n1)
4169         _depflags='-MMD'
4170         _cflags_speed='-O3'
4171         _cflags_size='-Os'
4172         _cflags_noopt='-O1'
4173         _flags_filter=icc_flags
4174     elif $_cc -v 2>&1 | grep -q xlc; then
4175         _type=xlc
4176         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4177         _cflags_speed='-O5'
4178         _cflags_size='-O5 -qcompact'
4179     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4180         test -d "$sysroot" || die "No valid sysroot specified."
4181         _type=armcc
4182         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4183         armcc_conf="$PWD/armcc.conf"
4184         $_cc --arm_linux_configure                 \
4185              --arm_linux_config_file="$armcc_conf" \
4186              --configure_sysroot="$sysroot"        \
4187              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4188              die "Error creating armcc configuration file."
4189         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4190         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4191         as_default="${cross_prefix}gcc"
4192         _depflags='-MMD'
4193         _cflags_speed='-O3'
4194         _cflags_size='-Os'
4195     elif $_cc -v 2>&1 | grep -q clang; then
4196         _type=clang
4197         _ident=$($_cc --version 2>/dev/null | head -n1)
4198         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4199         _cflags_speed='-O3'
4200         _cflags_size='-Oz'
4201     elif $_cc -V 2>&1 | grep -q Sun; then
4202         _type=suncc
4203         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4204         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4205         _DEPFLAGS='-xM1 -xc99'
4206         _ldflags='-std=c99'
4207         _cflags_speed='-O5'
4208         _cflags_size='-O5 -xspace'
4209         _flags_filter=suncc_flags
4210     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4211         _type=pathscale
4212         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4213         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4214         _cflags_speed='-O2'
4215         _cflags_size='-Os'
4216         _flags_filter='filter_out -Wdisabled-optimization'
4217     elif $_cc -v 2>&1 | grep -q Open64; then
4218         _type=open64
4219         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4220         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4221         _cflags_speed='-O2'
4222         _cflags_size='-Os'
4223         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4224     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4225         _type=armasm
4226         _ident=$($_cc | head -n1)
4227         # 4509: "This form of conditional instruction is deprecated"
4228         _flags="-nologo -ignore 4509"
4229         _flags_filter=armasm_flags
4230     elif $_cc 2>&1 | grep -q Intel; then
4231         _type=icl
4232         _ident=$($_cc 2>&1 | head -n1)
4233         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4234         # Not only is O3 broken on 13.x+ but it is slower on all previous
4235         # versions (tested) as well.
4236         _cflags_speed="-O2"
4237         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4238         if $_cc 2>&1 | grep -q Linker; then
4239             _ld_o='-out:$@'
4240         else
4241             _ld_o='-Fe$@'
4242         fi
4243         _cc_o='-Fo$@'
4244         _cc_e='-P'
4245         _flags_filter=icl_flags
4246         _ld_lib='lib%.a'
4247         _ld_path='-libpath:'
4248         # -Qdiag-error to make icl error when seeing certain unknown arguments
4249         _flags='-nologo -Qdiag-error:4044,10157'
4250         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4251         # with MSVC which enables it by default.
4252         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4253         disable stripping
4254     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4255         # lld can emulate multiple different linkers; in ms link.exe mode,
4256         # the -? parameter gives the help output which contains an identifyable
4257         # string, while it gives an error in other modes.
4258         _type=lld-link
4259         # The link.exe mode doesn't have a switch for getting the version,
4260         # but we can force it back to gnu mode and get the version from there.
4261         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4262         _ld_o='-out:$@'
4263         _flags_filter=msvc_flags
4264         _ld_lib='lib%.a'
4265         _ld_path='-libpath:'
4266     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4267         _type=msvc
4268         _ident=$($_cc 2>&1 | head -n1)
4269         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4270         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4271         _cflags_speed="-O2"
4272         _cflags_size="-O1"
4273         _cflags_noopt="-O1"
4274         if $_cc -nologo- 2>&1 | grep -q Linker; then
4275             _ld_o='-out:$@'
4276         else
4277             _ld_o='-Fe$@'
4278         fi
4279         _cc_o='-Fo$@'
4280         _cc_e='-P -Fi$@'
4281         _flags_filter=msvc_flags
4282         _ld_lib='lib%.a'
4283         _ld_path='-libpath:'
4284         _flags='-nologo'
4285         disable stripping
4286     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4287         _type=cparser
4288         _ident=$($_cc --version | head -n1)
4289         _depflags='-MMD'
4290         _cflags_speed='-O4'
4291         _cflags_size='-O2'
4292         _flags_filter=cparser_flags
4293     fi
4294
4295     eval ${pfx}_type=\$_type
4296     eval ${pfx}_ident=\$_ident
4297 }
4298
4299 set_ccvars(){
4300     eval ${1}_C=\${_cc_c-\${${1}_C}}
4301     eval ${1}_E=\${_cc_e-\${${1}_E}}
4302     eval ${1}_O=\${_cc_o-\${${1}_O}}
4303
4304     if [ -n "$_depflags" ]; then
4305         eval ${1}_DEPFLAGS=\$_depflags
4306     else
4307         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4308         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4309         eval DEP${1}FLAGS=\$_flags
4310     fi
4311 }
4312
4313 probe_cc cc "$cc" "true"
4314 cflags_filter=$_flags_filter
4315 cflags_speed=$_cflags_speed
4316 cflags_size=$_cflags_size
4317 cflags_noopt=$_cflags_noopt
4318 add_cflags $_flags $_cflags
4319 cc_ldflags=$_ldflags
4320 set_ccvars CC
4321 set_ccvars CXX
4322
4323 probe_cc hostcc "$host_cc"
4324 host_cflags_filter=$_flags_filter
4325 host_cflags_speed=$_cflags_speed
4326 add_host_cflags  $_flags $_cflags
4327 set_ccvars HOSTCC
4328
4329 test -n "$cc_type" && enable $cc_type ||
4330     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4331
4332 : ${as_default:=$cc}
4333 : ${objcc_default:=$cc}
4334 : ${dep_cc_default:=$cc}
4335 : ${ld_default:=$cc}
4336 : ${host_ld_default:=$host_cc}
4337 set_default ar as objcc dep_cc ld ln_s host_ld windres
4338
4339 probe_cc as "$as"
4340 asflags_filter=$_flags_filter
4341 add_asflags $_flags $_cflags
4342 set_ccvars AS
4343
4344 probe_cc objcc "$objcc"
4345 objcflags_filter=$_flags_filter
4346 add_objcflags $_flags $_cflags
4347 set_ccvars OBJC
4348
4349 probe_cc ld "$ld"
4350 ldflags_filter=$_flags_filter
4351 add_ldflags $_flags $_ldflags
4352 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4353 LD_O=${_ld_o-$LD_O}
4354 LD_LIB=${_ld_lib-$LD_LIB}
4355 LD_PATH=${_ld_path-$LD_PATH}
4356
4357 probe_cc hostld "$host_ld"
4358 host_ldflags_filter=$_flags_filter
4359 add_host_ldflags $_flags $_ldflags
4360 HOSTLD_O=${_ld_o-$HOSTLD_O}
4361
4362 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4363     probe_cc depcc "$dep_cc"
4364     CCDEP=${_DEPCMD:-$DEPCMD}
4365     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4366     DEPCCFLAGS=$_flags
4367 fi
4368
4369 if $ar 2>&1 | grep -q Microsoft; then
4370     arflags="-nologo"
4371     ar_o='-out:$@'
4372 elif $ar 2>&1 | grep -q "\[D\] "; then
4373     arflags="rcD"
4374     ar_o='$@'
4375 else
4376     arflags="rc"
4377     ar_o='$@'
4378 fi
4379
4380 add_cflags $extra_cflags
4381 add_cxxflags $extra_cxxflags
4382 add_objcflags $extra_objcflags
4383 add_asflags $extra_cflags
4384
4385 if test -n "$sysroot"; then
4386     case "$cc_type" in
4387         gcc|llvm_gcc|clang)
4388             add_cppflags --sysroot="$sysroot"
4389             add_ldflags --sysroot="$sysroot"
4390         ;;
4391     esac
4392 fi
4393
4394 if test "$cpu" = host; then
4395     enabled cross_compile &&
4396         die "--cpu=host makes no sense when cross-compiling."
4397
4398     case "$cc_type" in
4399         gcc|llvm_gcc)
4400             check_native(){
4401                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4402                 sed -n "/cc1.*$1=/{
4403                             s/.*$1=\\([^ ]*\\).*/\\1/
4404                             p
4405                             q
4406                         }" $TMPE
4407             }
4408             cpu=$(check_native -march || check_native -mcpu)
4409         ;;
4410         clang)
4411             check_native(){
4412                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4413                 sed -n "/cc1.*-target-cpu /{
4414                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4415                             p
4416                             q
4417                         }" $TMPE
4418             }
4419             cpu=$(check_native -march)
4420         ;;
4421     esac
4422
4423     test "${cpu:-host}" = host &&
4424         die "--cpu=host not supported with compiler $cc"
4425 fi
4426
4427 # Deal with common $arch aliases
4428 case "$arch" in
4429     aarch64|arm64)
4430         arch="aarch64"
4431     ;;
4432     arm*|iPad*|iPhone*)
4433         arch="arm"
4434     ;;
4435     mips*|IP*)
4436         case "$arch" in
4437         *el)
4438             add_cppflags -EL
4439             add_ldflags -EL
4440         ;;
4441         *eb)
4442             add_cppflags -EB
4443             add_ldflags -EB
4444         ;;
4445         esac
4446         arch="mips"
4447     ;;
4448     parisc*|hppa*)
4449         arch="parisc"
4450     ;;
4451     "Power Macintosh"|ppc*|powerpc*)
4452         arch="ppc"
4453     ;;
4454     s390|s390x)
4455         arch="s390"
4456     ;;
4457     sh4|sh)
4458         arch="sh4"
4459     ;;
4460     sun4*|sparc*)
4461         arch="sparc"
4462     ;;
4463     tilegx|tile-gx)
4464         arch="tilegx"
4465     ;;
4466     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4467         arch="x86"
4468     ;;
4469 esac
4470
4471 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4472 enable $arch
4473
4474 # Add processor-specific flags
4475 if enabled aarch64; then
4476
4477     case $cpu in
4478         armv*)
4479             cpuflags="-march=$cpu"
4480         ;;
4481         *)
4482             cpuflags="-mcpu=$cpu"
4483         ;;
4484     esac
4485
4486 elif enabled alpha; then
4487
4488     cpuflags="-mcpu=$cpu"
4489
4490 elif enabled arm; then
4491
4492     check_arm_arch() {
4493         check_cpp_condition stddef.h \
4494             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4495             $cpuflags
4496     }
4497
4498     probe_arm_arch() {
4499         if   check_arm_arch 4;        then echo armv4
4500         elif check_arm_arch 4T;       then echo armv4t
4501         elif check_arm_arch 5;        then echo armv5
4502         elif check_arm_arch 5E;       then echo armv5e
4503         elif check_arm_arch 5T;       then echo armv5t
4504         elif check_arm_arch 5TE;      then echo armv5te
4505         elif check_arm_arch 5TEJ;     then echo armv5te
4506         elif check_arm_arch 6;        then echo armv6
4507         elif check_arm_arch 6J;       then echo armv6j
4508         elif check_arm_arch 6K;       then echo armv6k
4509         elif check_arm_arch 6Z;       then echo armv6z
4510         elif check_arm_arch 6ZK;      then echo armv6zk
4511         elif check_arm_arch 6T2;      then echo armv6t2
4512         elif check_arm_arch 7;        then echo armv7
4513         elif check_arm_arch 7A  7_A;  then echo armv7-a
4514         elif check_arm_arch 7S;       then echo armv7-a
4515         elif check_arm_arch 7R  7_R;  then echo armv7-r
4516         elif check_arm_arch 7M  7_M;  then echo armv7-m
4517         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4518         elif check_arm_arch 8A  8_A;  then echo armv8-a
4519         fi
4520     }
4521
4522     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4523
4524     case $cpu in
4525         armv*)
4526             cpuflags="-march=$cpu"
4527             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4528         ;;
4529         *)
4530             cpuflags="-mcpu=$cpu"
4531             case $cpu in
4532                 cortex-a*)                               subarch=armv7a  ;;
4533                 cortex-r*)                               subarch=armv7r  ;;
4534                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4535                 arm11*)                                  subarch=armv6   ;;
4536                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4537                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4538                 *)                             subarch=$(probe_arm_arch) ;;
4539             esac
4540         ;;
4541     esac
4542
4543     case "$subarch" in
4544         armv5t*)    enable fast_clz                ;;
4545         armv[6-8]*)
4546             enable fast_clz
4547             disabled fast_unaligned || enable fast_unaligned
4548             ;;
4549     esac
4550
4551 elif enabled avr32; then
4552
4553     case $cpu in
4554         ap7[02]0[0-2])
4555             subarch="avr32_ap"
4556             cpuflags="-mpart=$cpu"
4557         ;;
4558         ap)
4559             subarch="avr32_ap"
4560             cpuflags="-march=$cpu"
4561         ;;
4562         uc3[ab]*)
4563             subarch="avr32_uc"
4564             cpuflags="-mcpu=$cpu"
4565         ;;
4566         uc)
4567             subarch="avr32_uc"
4568             cpuflags="-march=$cpu"
4569         ;;
4570     esac
4571
4572 elif enabled bfin; then
4573
4574     cpuflags="-mcpu=$cpu"
4575
4576 elif enabled mips; then
4577
4578     cpuflags="-march=$cpu"
4579
4580     if [ "$cpu" != "generic" ]; then
4581         disable mips32r2
4582         disable mips32r5
4583         disable mips64r2
4584         disable mips32r6
4585         disable mips64r6
4586         disable loongson2
4587         disable loongson3
4588
4589         case $cpu in
4590             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4591                 enable mips32r2
4592                 disable msa
4593             ;;
4594             p5600|i6400|p6600)
4595                 disable mipsdsp
4596                 disable mipsdspr2
4597             ;;
4598             loongson*)
4599                 enable loongson2
4600                 enable loongson3
4601                 enable local_aligned
4602                 enable simd_align_16
4603                 enable fast_64bit
4604                 enable fast_clz
4605                 enable fast_cmov
4606                 enable fast_unaligned
4607                 disable aligned_stack
4608                 disable mipsfpu
4609                 disable mipsdsp
4610                 disable mipsdspr2
4611                 case $cpu in
4612                     loongson3*)
4613                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4614                     ;;
4615                     loongson2e)
4616                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4617                     ;;
4618                     loongson2f)
4619                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4620                     ;;
4621                 esac
4622             ;;
4623             *)
4624                 # Unknown CPU. Disable everything.
4625                 warn "unknown CPU. Disabling all MIPS optimizations."
4626                 disable mipsfpu
4627                 disable mipsdsp
4628                 disable mipsdspr2
4629                 disable msa
4630                 disable mmi
4631             ;;
4632         esac
4633
4634         case $cpu in
4635             24kc)
4636                 disable mipsfpu
4637                 disable mipsdsp
4638                 disable mipsdspr2
4639             ;;
4640             24kf*)
4641                 disable mipsdsp
4642                 disable mipsdspr2
4643             ;;
4644             24kec|34kc|1004kc)
4645                 disable mipsfpu
4646                 disable mipsdspr2
4647             ;;
4648             24kef*|34kf*|1004kf*)
4649                 disable mipsdspr2
4650             ;;
4651             74kc)
4652                 disable mipsfpu
4653             ;;
4654             p5600)
4655                 enable mips32r5
4656                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4657             ;;
4658             i6400)
4659                 enable mips64r6
4660                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4661             ;;
4662             p6600)
4663                 enable mips64r6
4664                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4665             ;;
4666         esac
4667     else
4668         # We do not disable anything. Is up to the user to disable the unwanted features.
4669         warn 'generic cpu selected'
4670     fi
4671
4672 elif enabled ppc; then
4673
4674     disable ldbrx
4675
4676     case $(tolower $cpu) in
4677         601|ppc601|powerpc601)
4678             cpuflags="-mcpu=601"
4679             disable altivec
4680         ;;
4681         603*|ppc603*|powerpc603*)
4682             cpuflags="-mcpu=603"
4683             disable altivec
4684         ;;
4685         604*|ppc604*|powerpc604*)
4686             cpuflags="-mcpu=604"
4687             disable altivec
4688         ;;
4689         g3|75*|ppc75*|powerpc75*)
4690             cpuflags="-mcpu=750"
4691             disable altivec
4692         ;;
4693         g4|745*|ppc745*|powerpc745*)
4694             cpuflags="-mcpu=7450"
4695             disable vsx
4696         ;;
4697         74*|ppc74*|powerpc74*)
4698             cpuflags="-mcpu=7400"
4699             disable vsx
4700         ;;
4701         g5|970|ppc970|powerpc970)
4702             cpuflags="-mcpu=970"
4703             disable vsx
4704         ;;
4705         power[3-6]*)
4706             cpuflags="-mcpu=$cpu"
4707             disable vsx
4708         ;;
4709         power[7-8]*)
4710             cpuflags="-mcpu=$cpu"
4711         ;;
4712         cell)
4713             cpuflags="-mcpu=cell"
4714             enable ldbrx
4715             disable vsx
4716         ;;
4717         e500mc)
4718             cpuflags="-mcpu=e500mc"
4719             disable altivec
4720         ;;
4721         e500v2)
4722             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4723             disable altivec
4724             disable dcbzl
4725         ;;
4726         e500)
4727             cpuflags="-mcpu=8540 -mhard-float"
4728             disable altivec
4729             disable dcbzl
4730         ;;
4731     esac
4732
4733 elif enabled sparc; then
4734
4735     case $cpu in
4736         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4737             cpuflags="-mcpu=$cpu"
4738         ;;
4739         ultrasparc*|niagara[234])
4740             cpuflags="-mcpu=$cpu"
4741         ;;
4742     esac
4743
4744 elif enabled x86; then
4745
4746     case $cpu in
4747         i[345]86|pentium)
4748             cpuflags="-march=$cpu"
4749             disable i686
4750             disable mmx
4751         ;;
4752         # targets that do NOT support nopl and conditional mov (cmov)
4753         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4754             cpuflags="-march=$cpu"
4755             disable i686
4756         ;;
4757         # targets that do support nopl and conditional mov (cmov)
4758         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4759         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4760         |amdfam10|barcelona|b[dt]ver*|znver*)
4761             cpuflags="-march=$cpu"
4762             enable i686
4763             enable fast_cmov
4764         ;;
4765         # targets that do support conditional mov but on which it's slow
4766         pentium4|pentium4m|prescott|nocona)
4767             cpuflags="-march=$cpu"
4768             enable i686
4769             disable fast_cmov
4770         ;;
4771     esac
4772
4773 fi
4774
4775 if [ "$cpu" != generic ]; then
4776     add_cflags  $cpuflags
4777     add_asflags $cpuflags
4778     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4779 fi
4780
4781 # compiler sanity check
4782 check_exec <<EOF
4783 int main(void){ return 0; }
4784 EOF
4785 if test "$?" != 0; then
4786     echo "$cc is unable to create an executable file."
4787     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4788         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4789         echo "Only do this if you know what cross compiling means."
4790     fi
4791     die "C compiler test failed."
4792 fi
4793
4794 add_cppflags -D_ISOC99_SOURCE
4795 add_cxxflags -D__STDC_CONSTANT_MACROS
4796 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4797
4798 # some compilers silently accept -std=c11, so we also need to check that the
4799 # version macro is defined properly
4800 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4801     add_cflags -std=c11 ||
4802     check_cflags -std=c99
4803
4804 check_cppflags -D_FILE_OFFSET_BITS=64
4805 check_cppflags -D_LARGEFILE_SOURCE
4806
4807 add_host_cppflags -D_ISOC99_SOURCE
4808 check_host_cflags -std=c99
4809 check_host_cflags -Wall
4810 check_host_cflags $host_cflags_speed
4811
4812 check_64bit(){
4813     arch32=$1
4814     arch64=$2
4815     expr=$3
4816     check_code cc "" "int test[2*($expr) - 1]" &&
4817         subarch=$arch64 || subarch=$arch32
4818 }
4819
4820 case "$arch" in
4821     aarch64|alpha|ia64)
4822         spic=$shared
4823     ;;
4824     mips)
4825         check_64bit mips mips64 '_MIPS_SIM > 1'
4826         spic=$shared
4827     ;;
4828     parisc)
4829         check_64bit parisc parisc64 'sizeof(void *) > 4'
4830         spic=$shared
4831     ;;
4832     ppc)
4833         check_64bit ppc ppc64 'sizeof(void *) > 4'
4834         spic=$shared
4835     ;;
4836     s390)
4837         check_64bit s390 s390x 'sizeof(void *) > 4'
4838         spic=$shared
4839     ;;
4840     sparc)
4841         check_64bit sparc sparc64 'sizeof(void *) > 4'
4842         spic=$shared
4843     ;;
4844     x86)
4845         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4846         # Treat x32 as x64 for now. Note it also needs spic=$shared
4847         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4848             subarch=x86_64
4849         if test "$subarch" = "x86_64"; then
4850             spic=$shared
4851         fi
4852     ;;
4853     ppc)
4854         check_cc <<EOF && subarch="ppc64"
4855         int test[(int)sizeof(char*) - 7];
4856 EOF
4857     ;;
4858 esac
4859
4860 enable $subarch
4861 enabled spic && enable_weak pic
4862
4863 enabled x86_64 && objformat=elf64 || objformat="elf32"
4864
4865 # OS specific
4866 case $target_os in
4867     aix)
4868         SHFLAGS=-shared
4869         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4870         enabled shared && add_ldflags -Wl,-brtl
4871         arflags='-Xany -r -c'
4872         ;;
4873     android)
4874         disable symver
4875         enable section_data_rel_ro
4876         SLIB_INSTALL_NAME='$(SLIBNAME)'
4877         SLIB_INSTALL_LINKS=
4878         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4879         ;;
4880     haiku)
4881         prefix_default="/boot/common"
4882         network_extralibs="-lnetwork"
4883         host_extralibs=
4884         ;;
4885     sunos)
4886         SHFLAGS='-shared -Wl,-h,$$(@F)'
4887         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4888         network_extralibs="-lsocket -lnsl"
4889         add_cppflags -D__EXTENSIONS__
4890         # When using suncc to build, the Solaris linker will mark
4891         # an executable with each instruction set encountered by
4892         # the Solaris assembler.  As our libraries contain their own
4893         # guards for processor-specific code, instead suppress
4894         # generation of the HWCAPS ELF section on Solaris x86 only.
4895         enabled_all suncc x86 &&
4896             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4897             add_ldflags -Wl,-M,mapfile
4898         nm_default='nm -P -g'
4899         version_script='-M'
4900         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4901         ;;
4902     netbsd)
4903         disable symver
4904         oss_indev_extralibs="-lossaudio"
4905         oss_outdev_extralibs="-lossaudio"
4906         enabled gcc || check_ldflags -Wl,-zmuldefs
4907         ;;
4908     openbsd|bitrig)
4909         disable symver
4910         SHFLAGS='-shared'
4911         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4912         SLIB_INSTALL_LINKS=
4913         oss_indev_extralibs="-lossaudio"
4914         oss_outdev_extralibs="-lossaudio"
4915         ;;
4916     dragonfly)
4917         disable symver
4918         ;;
4919     freebsd)
4920         ;;
4921     bsd/os)
4922         add_extralibs -lpoll -lgnugetopt
4923         strip="strip -d"
4924         ;;
4925     darwin)
4926         enabled ppc && add_asflags -force_cpusubtype_ALL
4927         install_name_dir_default='$(SHLIBDIR)'
4928         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4929         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4930         strip="${strip} -x"
4931         add_ldflags -Wl,-dynamic,-search_paths_first
4932         check_cflags -Werror=partial-availability
4933         SLIBSUF=".dylib"
4934         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4935         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4936         enabled x86_64 && objformat="macho64" || objformat="macho32"
4937         enabled_any pic shared x86_64 ||
4938             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4939         check_header dispatch/dispatch.h &&
4940             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4941         if test -n "$sysroot"; then
4942             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4943             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4944         fi
4945         version_script='-exported_symbols_list'
4946         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4947         ;;
4948     msys*)
4949         die "Native MSYS builds are discouraged, please use the MINGW environment."
4950         ;;
4951     mingw32*|mingw64*)
4952         target_os=mingw32
4953         if enabled shared; then
4954             # Cannot build both shared and static libs when using dllexport.
4955             disable static
4956         fi
4957         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4958         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4959         shlibdir_default="$bindir_default"
4960         SLIBPREF=""
4961         SLIBSUF=".dll"
4962         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4963         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4964         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4965         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4966         SLIB_INSTALL_LINKS=
4967         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4968         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4969         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4970         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4971         enabled x86_64 && objformat="win64" || objformat="win32"
4972         ranlib=:
4973         enable dos_paths
4974         check_ldflags -Wl,--nxcompat,--dynamicbase
4975         # Lets work around some stupidity in binutils.
4976         # ld will strip relocations from executables even though we need them
4977         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4978         # however ld then forgets what the entry point should be (oops) so we
4979         # have to manually (re)set it.
4980         if enabled x86_32; then
4981             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4982         elif enabled x86_64; then
4983             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4984             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4985             # Set image base >4GB for extra entropy with HEASLR
4986             add_ldexeflags -Wl,--image-base,0x140000000
4987             append SHFLAGS -Wl,--image-base,0x180000000
4988         fi
4989         ;;
4990     win32|win64)
4991         disable symver
4992         if enabled shared; then
4993             # Link to the import library instead of the normal static library
4994             # for shared libs.
4995             LD_LIB='%.lib'
4996             # Cannot build both shared and static libs with MSVC or icl.
4997             disable static
4998         fi
4999         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5000         shlibdir_default="$bindir_default"
5001         SLIBPREF=""
5002         SLIBSUF=".dll"
5003         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5004         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5005         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5006         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5007         SLIB_INSTALL_LINKS=
5008         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5009         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5010         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5011         enabled x86_64 && objformat="win64" || objformat="win32"
5012         ranlib=:
5013         enable dos_paths
5014         ;;
5015     cygwin*)
5016         target_os=cygwin
5017         shlibdir_default="$bindir_default"
5018         SLIBPREF="cyg"
5019         SLIBSUF=".dll"
5020         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5021         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5022         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5023         SLIB_INSTALL_LINKS=
5024         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5025         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5026         enabled x86_64 && objformat="win64" || objformat="win32"
5027         enable dos_paths
5028         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5029         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5030         ;;
5031     *-dos|freedos|opendos)
5032         network_extralibs="-lsocket"
5033         objformat="coff"
5034         enable dos_paths
5035         add_cppflags -U__STRICT_ANSI__
5036         ;;
5037     linux)
5038         enable section_data_rel_ro
5039         enabled_any arm aarch64 && enable_weak linux_perf
5040         ;;
5041     irix*)
5042         target_os=irix
5043         ranlib="echo ignoring ranlib"
5044         ;;
5045     os/2*)
5046         strip="lxlite -CS"
5047         striptype=""
5048         objformat="aout"
5049         add_cppflags -D_GNU_SOURCE
5050         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5051         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5052         LIBSUF="_s.a"
5053         SLIBPREF=""
5054         SLIBSUF=".dll"
5055         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5056         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5057         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5058             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5059             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5060             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5061             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5062         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5063             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5064         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5065         SLIB_INSTALL_LINKS=
5066         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5067         enable dos_paths
5068         enable_weak os2threads
5069         ;;
5070     gnu/kfreebsd)
5071         add_cppflags -D_BSD_SOURCE
5072         ;;
5073     gnu)
5074         ;;
5075     qnx)
5076         add_cppflags -D_QNX_SOURCE
5077         network_extralibs="-lsocket"
5078         ;;
5079     symbian)
5080         SLIBSUF=".dll"
5081         enable dos_paths
5082         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5083         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5084         add_ldflags -Wl,--target1-abs,--no-undefined \
5085                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5086                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5087         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5088                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5089                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5090         ;;
5091     minix)
5092         ;;
5093     none)
5094         ;;
5095     *)
5096         die "Unknown OS '$target_os'."
5097         ;;
5098 esac
5099
5100 # test if creating links works
5101 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5102 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5103 mkdir "$link_dest"
5104 $ln_s "$link_dest" "$link_name"
5105 touch "$link_dest/test_file"
5106 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5107     # create link to source path
5108     [ -e src ] && rm src
5109     $ln_s "$source_path" src
5110     source_link=src
5111 else
5112     # creating directory links doesn't work
5113     # fall back to using the full source path
5114     source_link="$source_path"
5115 fi
5116 # cleanup
5117 rm -r "$link_dest"
5118 rm -r "$link_name"
5119
5120 # determine libc flavour
5121
5122 probe_libc(){
5123     pfx=$1
5124     pfx_no_=${pfx%_}
5125     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5126     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5127         eval ${pfx}libc_type=uclibc
5128         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5129     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5130         eval ${pfx}libc_type=glibc
5131         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5132     # MinGW headers can be installed on Cygwin, so check for newlib first.
5133     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5134         eval ${pfx}libc_type=newlib
5135         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5136     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5137     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5138         eval ${pfx}libc_type=mingw64
5139         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5140             add_compat msvcrt/snprintf.o
5141             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5142         fi
5143         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5144         eval test \$${pfx_no_}cc_type = "gcc" &&
5145             add_${pfx}cppflags -D__printf__=__gnu_printf__
5146     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5147          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5148         eval ${pfx}libc_type=mingw32
5149         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5150             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5151             die "ERROR: MinGW32 runtime version must be >= 3.15."
5152         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5153         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5154             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5155         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5156             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5157         eval test \$${pfx_no_}cc_type = "gcc" &&
5158             add_${pfx}cppflags -D__printf__=__gnu_printf__
5159     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5160         eval ${pfx}libc_type=msvcrt
5161         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5162             if [ "$pfx" = host_ ]; then
5163                 add_host_cppflags -Dsnprintf=_snprintf
5164             else
5165                 add_compat strtod.o strtod=avpriv_strtod
5166                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5167                                              _snprintf=avpriv_snprintf  \
5168                                              vsnprintf=avpriv_vsnprintf
5169             fi
5170         fi
5171         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5172         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5173         # 0x601 by default unless something else is set by the user.
5174         # This can easily lead to us detecting functions only present
5175         # in such new versions and producing binaries requiring windows 7.0.
5176         # Therefore explicitly set the default to XP unless the user has
5177         # set something else on the command line.
5178         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5179         # family. For these cases, configure is free to use any functions
5180         # found in the SDK headers by default. (Alternatively, we could force
5181         # _WIN32_WINNT to 0x0602 in that case.)
5182         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5183             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5184 #ifdef WINAPI_FAMILY
5185 #include <winapifamily.h>
5186 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5187 #error not desktop
5188 #endif
5189 #endif
5190 EOF
5191         if [ "$pfx" = "" ]; then
5192             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5193             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5194         fi
5195     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5196         eval ${pfx}libc_type=klibc
5197     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5198         eval ${pfx}libc_type=bionic
5199     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5200         eval ${pfx}libc_type=solaris
5201         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5202     fi
5203     check_${pfx}cc <<EOF
5204 #include <time.h>
5205 void *v = localtime_r;
5206 EOF
5207 test "$?" != 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
5208 #include <time.h>
5209 void *v = localtime_r;
5210 EOF
5211
5212     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5213 }
5214
5215 probe_libc
5216 probe_libc host_
5217
5218 # hacks for compiler/libc/os combinations
5219
5220 case $libc_type in
5221     bionic)
5222         add_compat strtod.o strtod=avpriv_strtod
5223         ;;
5224 esac
5225
5226 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5227     add_cppflags '-I\$(SRC_PATH)/compat/float'
5228
5229 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5230
5231 set_default libdir
5232 : ${shlibdir_default:="$libdir"}
5233 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5234
5235 set_default $PATHS_LIST
5236 set_default nm
5237
5238 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5239
5240 enable_weak_pic() {
5241     disabled pic && return
5242     enable pic
5243     add_cppflags -DPIC
5244     case "$target_os" in
5245     mingw*|cygwin*|win*)
5246         ;;
5247     *)
5248         add_cflags -fPIC
5249         add_asflags -fPIC
5250         ;;
5251     esac
5252 }
5253
5254 enabled pic && enable_weak_pic
5255
5256 check_cc <<EOF || die "Symbol mangling check failed."
5257 int ff_extern;
5258 EOF
5259 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5260 extern_prefix=${sym%%ff_extern*}
5261
5262 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5263
5264 _restrict=
5265 for restrict_keyword in restrict __restrict__ __restrict; do
5266     check_cc <<EOF && _restrict=$restrict_keyword && break
5267 void foo(char * $restrict_keyword p);
5268 EOF
5269 done
5270
5271 check_cc <<EOF && enable pragma_deprecated
5272 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5273 EOF
5274
5275 check_cc <<EOF || die "endian test failed"
5276 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5277 EOF
5278 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5279
5280 check_cc <<EOF && enable const_nan
5281 #include <math.h>
5282 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5283 EOF
5284
5285 if ! enabled ppc64 || enabled bigendian; then
5286     disable vsx
5287 fi
5288
5289 check_gas() {
5290     log "check_gas using '$as' as AS"
5291     # :vararg is used on aarch64, arm and ppc altivec
5292     check_as <<EOF || return 1
5293 .macro m n, y:vararg=0
5294 \n: .int \y
5295 .endm
5296 m x
5297 EOF
5298     # .altmacro is only used in arm asm
5299     ! enabled arm || check_as <<EOF || return 1
5300 .altmacro
5301 EOF
5302     enable gnu_as
5303     return 0
5304 }
5305
5306 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5307     nogas=:
5308     enabled_any arm aarch64 && nogas=die
5309     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5310     as_noop=-v
5311
5312     case $as_type in
5313         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5314         gcc)  gaspp_as_type=gas ;;
5315         *)    gaspp_as_type=$as_type ;;
5316     esac
5317
5318     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5319
5320     test "${as#*gas-preprocessor.pl}" != "$as" ||
5321     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5322         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5323
5324     if ! check_gas ; then
5325         as=${gas:=$as}
5326         check_gas || \
5327             $nogas "GNU assembler not found, install/update gas-preprocessor"
5328     fi
5329
5330     check_as <<EOF && enable as_func
5331 .func test
5332 .endfunc
5333 EOF
5334 fi
5335
5336 check_inline_asm inline_asm_labels '"1:\n"'
5337
5338 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5339
5340 if enabled aarch64; then
5341     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5342     # internal assembler in clang 3.3 does not support this instruction
5343     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5344     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5345
5346     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5347
5348 elif enabled alpha; then
5349
5350     check_cflags -mieee
5351
5352 elif enabled arm; then
5353
5354     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5355
5356     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5357 float func(float a, float b){ return a+b; }
5358 EOF
5359
5360     enabled thumb && check_cflags -mthumb || check_cflags -marm
5361
5362     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5363         enable vfp_args
5364     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5365         enable vfp_args
5366     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5367         case "${cross_prefix:-$cc}" in
5368             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5369             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5370 __asm__ (".eabi_attribute 28, 1");
5371 int main(void) { return 0; }
5372 EOF
5373         esac
5374         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5375     fi
5376
5377     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5378     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5379     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5380     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5381     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5382     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5383     enabled setend  && check_insn setend  'setend be'
5384
5385     [ $target_os = linux ] || [ $target_os = android ] ||
5386         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5387             $ARCH_EXT_LIST_ARM
5388
5389     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5390
5391     check_as <<EOF && enable as_arch_directive
5392 .arch armv7-a
5393 EOF
5394     check_as <<EOF && enable as_fpu_directive
5395 .fpu neon
5396 EOF
5397
5398     # llvm's integrated assembler supports .object_arch from llvm 3.5
5399     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5400         check_as <<EOF && enable as_object_arch
5401 .object_arch armv4
5402 EOF
5403
5404     # MS armasm fails to assemble our PIC constructs
5405     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5406
5407 elif enabled mips; then
5408
5409     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5410     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5411     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5412
5413     # Enable minimum ISA based on selected options
5414     if enabled mips64; then
5415         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5416         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5417         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5418     else
5419         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5420         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5421         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5422         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5423     fi
5424
5425     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5426     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5427     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5428     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5429     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5430
5431     if enabled bigendian && enabled msa; then
5432         disable msa
5433     fi
5434
5435 elif enabled parisc; then
5436
5437     if enabled gcc; then
5438         case $($cc -dumpversion) in
5439             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5440         esac
5441     fi
5442
5443 elif enabled ppc; then
5444
5445     enable local_aligned
5446
5447     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5448     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5449     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5450     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5451
5452     if enabled altivec; then
5453         check_cflags -maltivec -mabi=altivec
5454
5455         # check if our compiler supports Motorola AltiVec C API
5456         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5457                                  vector signed int v2 = (vector signed int) { 1 };
5458                                  v1 = vec_add(v1, v2);" ||
5459             disable altivec
5460
5461         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5462     fi
5463
5464     if enabled vsx; then
5465         check_cflags -mvsx &&
5466         check_code cc altivec.h "int v[4] = { 0 };
5467                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5468             disable vsx
5469     fi
5470
5471     if enabled power8; then
5472         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5473     fi
5474
5475 elif enabled x86; then
5476
5477     check_builtin rdtsc    intrin.h   "__rdtsc()"
5478     check_builtin mm_empty mmintrin.h "_mm_empty()"
5479
5480     enable local_aligned
5481
5482     # check whether EBP is available on x86
5483     # As 'i' is stored on the stack, this program will crash
5484     # if the base pointer is used to access it because the
5485     # base pointer is cleared in the inline assembly code.
5486     check_exec_crash <<EOF && enable ebp_available
5487 volatile int i=0;
5488 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5489 return i;
5490 EOF
5491
5492     # check whether EBX is available on x86
5493     check_inline_asm ebx_available '""::"b"(0)' &&
5494         check_inline_asm ebx_available '"":::"%ebx"'
5495
5496     # check whether xmm clobbers are supported
5497     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5498
5499     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5500         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5501
5502     # check whether binutils is new enough to compile SSSE3/MMXEXT
5503     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5504     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5505
5506     probe_x86asm(){
5507         x86asmexe_probe=$1
5508         if check_cmd $x86asmexe_probe -v; then
5509             x86asmexe=$x86asmexe_probe
5510             x86asm_type=nasm
5511             x86asm_debug="-g -F dwarf"
5512             X86ASMDEP=
5513             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5514         elif check_cmd $x86asmexe_probe --version; then
5515             x86asmexe=$x86asmexe_probe
5516             x86asm_type=yasm
5517             x86asm_debug="-g dwarf2"
5518             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5519             X86ASM_DEPFLAGS=
5520         fi
5521         check_x86asm "movbe ecx, [5]" && enable x86asm
5522     }
5523
5524     if ! disabled_any asm mmx x86asm; then
5525         disable x86asm
5526         for program in $x86asmexe nasm yasm; do
5527             probe_x86asm $program && break
5528         done
5529         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5530         X86ASMFLAGS="-f $objformat"
5531         enabled pic               && append X86ASMFLAGS "-DPIC"
5532         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5533         case "$objformat" in
5534             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5535         esac
5536
5537         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5538         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5539         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5540         check_x86asm "CPU amdnop" || disable cpunop
5541     fi
5542
5543     case "$cpu" in
5544         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5545             disable fast_clz
5546         ;;
5547     esac
5548
5549 fi
5550
5551 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5552
5553 check_ldflags -Wl,--as-needed
5554 check_ldflags -Wl,-z,noexecstack
5555
5556 if ! disabled network; then
5557     check_func getaddrinfo $network_extralibs
5558     check_func inet_aton $network_extralibs
5559
5560     check_type netdb.h "struct addrinfo"
5561     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5562     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5563     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5564     check_type poll.h "struct pollfd"
5565     check_type netinet/sctp.h "struct sctp_event_subscribe"
5566     check_struct "sys/socket.h" "struct msghdr" msg_flags
5567     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5568     check_type netinet/in.h "struct sockaddr_in6"
5569     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5570     check_type "sys/types.h sys/socket.h" socklen_t
5571
5572     # Prefer arpa/inet.h over winsock2
5573     if check_header arpa/inet.h ; then
5574         check_func closesocket
5575     elif check_header winsock2.h ; then
5576         check_func_headers winsock2.h closesocket -lws2 &&
5577             network_extralibs="-lws2" ||
5578         { check_func_headers winsock2.h closesocket -lws2_32 &&
5579             network_extralibs="-lws2_32"; } || disable winsock2_h network
5580         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5581
5582         check_type ws2tcpip.h socklen_t
5583         check_type ws2tcpip.h "struct addrinfo"
5584         check_type ws2tcpip.h "struct group_source_req"
5585         check_type ws2tcpip.h "struct ip_mreq_source"
5586         check_type ws2tcpip.h "struct ipv6_mreq"
5587         check_type winsock2.h "struct pollfd"
5588         check_struct winsock2.h "struct sockaddr" sa_len
5589         check_type ws2tcpip.h "struct sockaddr_in6"
5590         check_type ws2tcpip.h "struct sockaddr_storage"
5591     else
5592         disable network
5593     fi
5594 fi
5595
5596 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5597 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5598 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5599 check_builtin sarestart signal.h "SA_RESTART"
5600 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5601 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5602 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5603 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5604
5605 case "$custom_allocator" in
5606     jemalloc)
5607         # jemalloc by default does not use a prefix
5608         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5609     ;;
5610     tcmalloc)
5611         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5612         malloc_prefix=tc_
5613     ;;
5614 esac
5615
5616 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5617 check_func  ${malloc_prefix}memalign            && enable memalign
5618 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5619
5620 check_func  access
5621 check_func_headers stdlib.h arc4random
5622 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5623 check_func  fcntl
5624 check_func  fork
5625 check_func  gethrtime
5626 check_func  getopt
5627 check_func  getrusage
5628 check_func  gettimeofday
5629 check_func  isatty
5630 check_func  mkstemp
5631 check_func  mmap
5632 check_func  mprotect
5633 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5634 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5635 check_func  sched_getaffinity
5636 check_func  setrlimit
5637 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5638 check_func  strerror_r
5639 check_func  sysconf
5640 check_func  sysctl
5641 check_func  usleep
5642
5643 check_func_headers conio.h kbhit
5644 check_func_headers io.h setmode
5645 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5646 check_func_headers mach/mach_time.h mach_absolute_time
5647 check_func_headers stdlib.h getenv
5648 check_func_headers sys/stat.h lstat
5649
5650 check_func_headers windows.h GetProcessAffinityMask
5651 check_func_headers windows.h GetProcessTimes
5652 check_func_headers windows.h GetSystemTimeAsFileTime
5653 check_func_headers windows.h LoadLibrary
5654 check_func_headers windows.h MapViewOfFile
5655 check_func_headers windows.h PeekNamedPipe
5656 check_func_headers windows.h SetConsoleTextAttribute
5657 check_func_headers windows.h SetConsoleCtrlHandler
5658 check_func_headers windows.h Sleep
5659 check_func_headers windows.h VirtualAlloc
5660 check_struct windows.h "CONDITION_VARIABLE" Ptr
5661 check_func_headers glob.h glob
5662 enabled xlib &&
5663     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5664
5665 check_header direct.h
5666 check_header dirent.h
5667 check_header dxgidebug.h
5668 check_header dxva.h
5669 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5670 check_header io.h
5671 check_header libcrystalhd/libcrystalhd_if.h
5672 check_header malloc.h
5673 check_header net/udplite.h
5674 check_header poll.h
5675 check_header sys/param.h
5676 check_header sys/resource.h
5677 check_header sys/select.h
5678 check_header sys/time.h
5679 check_header sys/un.h
5680 check_header termios.h
5681 check_header unistd.h
5682 check_header valgrind/valgrind.h
5683 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5684 check_header windows.h
5685 check_header X11/extensions/XvMClib.h
5686 check_header asm/types.h
5687
5688 # it seems there are versions of clang in some distros that try to use the
5689 # gcc headers, which explodes for stdatomic
5690 # so we also check that atomics actually work here
5691 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5692
5693 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5694 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5695 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5696 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5697 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5698
5699 enabled appkit       && check_apple_framework AppKit
5700 enabled audiotoolbox && check_apple_framework AudioToolbox
5701 enabled avfoundation && check_apple_framework AVFoundation
5702 enabled coreimage    && check_apple_framework CoreImage
5703 enabled videotoolbox && check_apple_framework VideoToolbox
5704
5705 check_apple_framework CoreFoundation
5706 check_apple_framework CoreMedia
5707 check_apple_framework CoreVideo
5708
5709 enabled avfoundation && {
5710     disable coregraphics applicationservices
5711     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5712     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5713
5714 enabled videotoolbox && {
5715     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5716     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5717 }
5718
5719 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5720
5721 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5722 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5723 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5724 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5725 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5726
5727 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5728 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5729 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5730 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5731 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5732 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5733 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5734 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5735 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5736
5737 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5738
5739 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5740
5741 if ! disabled w32threads && ! enabled pthreads; then
5742     check_func_headers "windows.h process.h" _beginthreadex &&
5743         enable w32threads || disable w32threads
5744     if ! enabled w32threads && enabled winrt; then
5745         check_func_headers "windows.h" CreateThread &&
5746             enable w32threads || disable w32threads
5747     fi
5748 fi
5749
5750 # check for some common methods of building with pthread support
5751 # do this before the optional library checks as some of them require pthreads
5752 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5753     if check_lib pthreads pthread.h pthread_join   -pthread &&
5754        check_lib pthreads pthread.h pthread_create -pthread; then
5755         add_cflags -pthread
5756     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5757          check_lib pthreads pthread.h pthread_create -pthreads; then
5758         add_cflags -pthreads
5759     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5760          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5761         add_cflags -ldl -pthread
5762     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5763          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5764         :
5765     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5766          check_lib pthreads pthread.h pthread_create -lpthread; then
5767         :
5768     elif check_func pthread_join && check_func pthread_create; then
5769         enable pthreads
5770     fi
5771     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5772 fi
5773
5774
5775 if enabled pthreads; then
5776   check_func pthread_cancel $pthreads_extralibs
5777 fi
5778
5779 enabled pthreads &&
5780     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5781
5782 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5783 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5784 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5785
5786 # On some systems dynamic loading requires no extra linker flags
5787 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5788
5789 check_lib libm math.h sin -lm
5790
5791 atan2f_args=2
5792 copysign_args=2
5793 hypot_args=2
5794 ldexpf_args=2
5795 powf_args=2
5796
5797 for func in $MATH_FUNCS; do
5798     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5799 done
5800
5801 for func in $COMPLEX_FUNCS; do
5802     eval check_complexfunc $func \${${func}_args:-1}
5803 done
5804
5805 # these are off by default, so fail if requested and not available
5806 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5807 enabled cuvid             && { enabled cuda ||
5808                                die "ERROR: CUVID requires CUDA"; }
5809 enabled nvdec             && { enabled cuda ||
5810                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5811 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5812 enabled decklink          && { require_header DeckLinkAPI.h &&
5813                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5814 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5815 enabled frei0r            && require_header frei0r.h
5816 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5817 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5818 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5819 enabled ladspa            && require_header ladspa.h
5820 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5821 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5822 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5823 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5824 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5825                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5826                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5827 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5828 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5829 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5830 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5831                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5832                                  warn "using libfdk without pkg-config"; } }
5833 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"
5834 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5835 enabled fontconfig        && enable libfontconfig
5836 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5837 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5838 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5839 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5840                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5841 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5842                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5843                                done || die "ERROR: libgsm not found"; }
5844 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5845 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5846 # While it may appear that require is being used as a pkg-config
5847 # fallback for libmfx, it is actually being used to detect a different
5848 # installation route altogether.  If libmfx is installed via the Intel
5849 # Media SDK or Intel Media Server Studio, these don't come with
5850 # pkg-config support.  Instead, users should make sure that the build
5851 # can find the libraries and headers through other means.
5852 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5853                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5854 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5855 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5856 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5857 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5858                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5859                                die "ERROR: libnpp not found"; }
5860 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5861 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5862 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5863                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5864                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5865                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5866 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5867 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5868                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5869 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5870 enabled libopus           && {
5871     enabled libopus_decoder && {
5872         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5873     }
5874     enabled libopus_encoder && {
5875         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5876     }
5877 }
5878 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5879 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5880 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5881 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5882 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5883 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5884                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5885 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5886 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5887 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5888 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5889 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5890 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5891 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5892                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5893                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5894 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5895 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5896 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5897 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5898 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5899                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5900
5901 enabled libvpx            && {
5902     enabled libvpx_vp8_decoder && {
5903         check_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5904             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5905                 die "ERROR: libvpx decoder version must be >=0.9.1";
5906     }
5907     enabled libvpx_vp8_encoder && {
5908         check_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5909             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5910                 die "ERROR: libvpx encoder version must be >=0.9.7";
5911     }
5912     enabled libvpx_vp9_decoder && {
5913         check_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5914             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5915     }
5916     enabled libvpx_vp9_encoder && {
5917         check_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5918             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5919     }
5920     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5921         die "libvpx enabled but no supported decoders found"
5922     fi
5923 }
5924
5925 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5926 enabled libwebp           && {
5927     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5928     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5929 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5930                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5931                                  warn "using libx264 without pkg-config"; } } &&
5932                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5933                              { check_cpp_condition x264.h "X264_MPEG2" &&
5934                                enable libx262; }
5935 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5936                              require_cpp_condition x265.h "X265_BUILD >= 68"
5937 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5938 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5939 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5940 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5941 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5942                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5943                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5944 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5945 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5946 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5947                                { ! enabled cross_compile &&
5948                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5949                                  add_ldflags -L/opt/vc/lib/ &&
5950                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5951                                die "ERROR: mmal not found" &&
5952                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5953 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5954                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5955                                die "ERROR: openal not found"; } &&
5956                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5957                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5958 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5959                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5960                                die "ERROR: opencl not found"; } &&
5961                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5962                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5963                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5964 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5965                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5966                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5967                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5968                                die "ERROR: opengl not found."
5969                              }
5970 enabled omx               && require_header OMX_Core.h
5971 enabled omx_rpi           && { check_header OMX_Core.h ||
5972                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5973                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5974 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5975                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5976                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5977                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5978                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5979                                die "ERROR: openssl not found"; }
5980 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5981                                  die "ERROR : Rockchip MPP was not found."; } &&
5982                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5983                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5984                                { enabled libdrm ||
5985                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5986                              }
5987
5988 if enabled gcrypt; then
5989     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5990     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5991         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5992         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5993         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5994             die "ERROR: gcrypt not found"
5995         add_cflags $gcrypt_cflags
5996     else
5997         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5998     fi
5999 fi
6000
6001 if enabled sdl2; then
6002     SDL2_CONFIG="${cross_prefix}sdl2-config"
6003     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6004         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6005             disable sdl2
6006     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6007         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6008         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6009         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6010         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6011         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6012             enable sdl2
6013     fi
6014     if test $target_os = "mingw32"; then
6015         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6016     fi
6017 fi
6018
6019 if enabled decklink; then
6020     case $target_os in
6021         mingw32*|mingw64*|win32|win64)
6022             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6023             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6024             ;;
6025     esac
6026 fi
6027
6028 enabled securetransport &&
6029     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6030     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6031         disable securetransport
6032
6033 enabled securetransport &&
6034     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6035
6036 enabled schannel &&
6037     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6038     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6039     schannel_extralibs="-lsecur32" ||
6040         disable schannel
6041
6042 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6043 enabled makeinfo \
6044     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6045     && enable makeinfo_html || disable makeinfo_html
6046 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6047 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6048 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6049 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6050
6051 # check V4L2 codecs available in the API
6052 check_header linux/fb.h
6053 check_header linux/videodev2.h
6054 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6055 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6056 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6057 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6058 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6059 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6060 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6061 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6062 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6063 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6064 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6065
6066 check_header sys/videoio.h
6067 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6068
6069 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6070 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6071 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6072 # w32api 3.12 had it defined wrong
6073 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6074
6075 check_type "dshow.h" IBaseFilter
6076
6077 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6078 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6079     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6080     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6081     check_header "dev/ic/bt8xx.h"
6082
6083 if check_struct sys/soundcard.h audio_buf_info bytes; then
6084     enable_sanitized sys/soundcard.h
6085 else
6086     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6087     #include <sys/soundcard.h>
6088     audio_buf_info abc;
6089 EOF
6090 fi
6091
6092 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6093     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6094
6095 enabled libjack &&
6096     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6097
6098 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6099
6100 if enabled libcdio; then
6101     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6102     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6103     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6104     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6105     die "ERROR: No usable libcdio/cdparanoia found"
6106 fi
6107
6108 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6109     disable libxcb_shm libxcb_shape libxcb_xfixes
6110
6111 if enabled libxcb; then
6112     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6113     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6114     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6115 fi
6116
6117 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6118
6119 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6120 # the desktop api partition
6121 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6122 #ifdef WINAPI_FAMILY
6123 #include <winapifamily.h>
6124 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6125 #error desktop, not uwp
6126 #else
6127 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6128 #endif
6129 #else
6130 #error no family set
6131 #endif
6132 EOF
6133
6134 enabled vaapi &&
6135     check_lib vaapi va/va.h vaInitialize -lva
6136
6137 enabled vaapi &&
6138     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6139     disable vaapi
6140
6141 enabled vaapi &&
6142     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6143
6144 enabled vaapi &&
6145     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6146
6147 enabled vaapi &&
6148     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6149     enable vaapi_1
6150
6151 enabled vdpau &&
6152     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6153     disable vdpau
6154
6155 enabled vdpau &&
6156     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6157
6158 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6159
6160 if enabled x86; then
6161     case $target_os in
6162         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6163             ;;
6164         *)
6165             disable cuda cuvid nvdec nvenc
6166             ;;
6167     esac
6168 else
6169     disable cuda cuvid nvdec nvenc
6170 fi
6171
6172 enabled nvenc &&
6173     check_cc -I$source_path <<EOF || disable nvenc
6174 #include "compat/nvenc/nvEncodeAPI.h"
6175 NV_ENCODE_API_FUNCTION_LIST flist;
6176 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6177 int main(void) { return 0; }
6178 EOF
6179
6180 # Funny iconv installations are not unusual, so check it after all flags have been set
6181 if enabled libc_iconv; then
6182     check_func_headers iconv.h iconv
6183 elif enabled iconv; then
6184     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6185 fi
6186
6187 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6188
6189 # add some useful compiler flags if supported
6190 check_cflags -Wdeclaration-after-statement
6191 check_cflags -Wall
6192 check_cflags -Wdisabled-optimization
6193 check_cflags -Wpointer-arith
6194 check_cflags -Wredundant-decls
6195 check_cflags -Wwrite-strings
6196 check_cflags -Wtype-limits
6197 check_cflags -Wundef
6198 check_cflags -Wmissing-prototypes
6199 check_cflags -Wno-pointer-to-int-cast
6200 check_cflags -Wstrict-prototypes
6201 check_cflags -Wempty-body
6202
6203 if enabled extra_warnings; then
6204     check_cflags -Wcast-qual
6205     check_cflags -Wextra
6206     check_cflags -Wpedantic
6207 fi
6208
6209 check_disable_warning(){
6210     warning_flag=-W${1#-Wno-}
6211     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6212 }
6213
6214 test_cflags -Werror=unused-command-line-argument &&
6215     append unknown_warning_flags "-Werror=unused-command-line-argument"
6216 test_cflags -Werror=unknown-warning-option &&
6217     append unknown_warning_flags "-Werror=unknown-warning-option"
6218
6219 check_disable_warning -Wno-parentheses
6220 check_disable_warning -Wno-switch
6221 check_disable_warning -Wno-format-zero-length
6222 check_disable_warning -Wno-pointer-sign
6223 check_disable_warning -Wno-unused-const-variable
6224 check_disable_warning -Wno-bool-operation
6225
6226 check_disable_warning_headers(){
6227     warning_flag=-W${1#-Wno-}
6228     test_cflags $warning_flag && add_cflags_headers $1
6229 }
6230
6231 check_disable_warning_headers -Wno-deprecated-declarations
6232 check_disable_warning_headers -Wno-unused-variable
6233
6234 check_cc <<EOF && enable blocks_extension
6235 void (^block)(void);
6236 EOF
6237
6238 # add some linker flags
6239 check_ldflags -Wl,--warn-common
6240 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6241 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6242 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6243
6244 # add some strip flags
6245 check_stripflags -x
6246
6247 enabled neon_clobber_test &&
6248     check_ldflags -Wl,--wrap,avcodec_open2              \
6249                   -Wl,--wrap,avcodec_decode_audio4      \
6250                   -Wl,--wrap,avcodec_decode_video2      \
6251                   -Wl,--wrap,avcodec_decode_subtitle2   \
6252                   -Wl,--wrap,avcodec_encode_audio2      \
6253                   -Wl,--wrap,avcodec_encode_video2      \
6254                   -Wl,--wrap,avcodec_encode_subtitle    \
6255                   -Wl,--wrap,avcodec_send_packet        \
6256                   -Wl,--wrap,avcodec_receive_packet     \
6257                   -Wl,--wrap,avcodec_send_frame         \
6258                   -Wl,--wrap,avcodec_receive_frame      \
6259                   -Wl,--wrap,swr_convert                \
6260                   -Wl,--wrap,avresample_convert ||
6261     disable neon_clobber_test
6262
6263 enabled xmm_clobber_test &&
6264     check_ldflags -Wl,--wrap,avcodec_open2              \
6265                   -Wl,--wrap,avcodec_decode_audio4      \
6266                   -Wl,--wrap,avcodec_decode_video2      \
6267                   -Wl,--wrap,avcodec_decode_subtitle2   \
6268                   -Wl,--wrap,avcodec_encode_audio2      \
6269                   -Wl,--wrap,avcodec_encode_video2      \
6270                   -Wl,--wrap,avcodec_encode_subtitle    \
6271                   -Wl,--wrap,avcodec_send_packet        \
6272                   -Wl,--wrap,avcodec_receive_packet     \
6273                   -Wl,--wrap,avcodec_send_frame         \
6274                   -Wl,--wrap,avcodec_receive_frame      \
6275                   -Wl,--wrap,swr_convert                \
6276                   -Wl,--wrap,avresample_convert         \
6277                   -Wl,--wrap,sws_scale ||
6278     disable xmm_clobber_test
6279
6280 check_ld "cc" <<EOF && enable proper_dce
6281 extern const int array[512];
6282 static inline int func(void) { return array[0]; }
6283 int main(void) { return 0; }
6284 EOF
6285
6286 if enabled proper_dce; then
6287     echo "X { local: *; };" > $TMPV
6288     if test_ldflags -Wl,${version_script},$TMPV; then
6289         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6290         check_cc <<EOF && enable symver_asm_label
6291 void ff_foo(void) __asm__ ("av_foo@VERSION");
6292 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6293 EOF
6294         check_cc <<EOF && enable symver_gnu_asm
6295 __asm__(".symver ff_foo,av_foo@VERSION");
6296 void ff_foo(void) {}
6297 EOF
6298     fi
6299 fi
6300
6301 if [ -z "$optflags" ]; then
6302     if enabled small; then
6303         optflags=$cflags_size
6304     elif enabled optimizations; then
6305         optflags=$cflags_speed
6306     else
6307         optflags=$cflags_noopt
6308     fi
6309 fi
6310
6311 if [ -z "$nvccflags" ]; then
6312     nvccflags=$nvccflags_default
6313 fi
6314
6315 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6316     nvccflags="$nvccflags -m64"
6317 else
6318     nvccflags="$nvccflags -m32"
6319 fi
6320
6321 check_optflags(){
6322     check_cflags "$@"
6323     enabled lto && check_ldflags "$@"
6324 }
6325
6326 check_optflags $optflags
6327 check_optflags -fno-math-errno
6328 check_optflags -fno-signed-zeros
6329
6330 if enabled lto; then
6331     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6332     check_cflags  -flto
6333     check_ldflags -flto $cpuflags
6334     disable inline_asm_direct_symbol_refs
6335 fi
6336
6337 enabled ftrapv && check_cflags -ftrapv
6338
6339 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6340 int x;
6341 EOF
6342
6343
6344 if enabled icc; then
6345     # Just warnings, no remarks
6346     check_cflags -w1
6347     # -wd: Disable following warnings
6348     # 144, 167, 556: -Wno-pointer-sign
6349     # 188: enumerated type mixed with another type
6350     # 1292: attribute "foo" ignored
6351     # 1419: external declaration in primary source file
6352     # 10006: ignoring unknown option -fno-signed-zeros
6353     # 10148: ignoring unknown option -Wno-parentheses
6354     # 10156: ignoring option '-W'; no argument required
6355     # 13200: No EMMS instruction before call to function
6356     # 13203: No EMMS instruction before return from function
6357     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6358     # 11030: Warning unknown option --as-needed
6359     # 10156: ignoring option '-export'; no argument required
6360     check_ldflags -wd10156,11030
6361     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6362     enable ebp_available
6363     # The test above does not test linking
6364     enabled lto && disable symver_asm_label
6365     if enabled x86_32; then
6366         icc_version=$($cc -dumpversion)
6367         test ${icc_version%%.*} -ge 11 &&
6368             check_cflags -falign-stack=maintain-16-byte ||
6369             disable aligned_stack
6370     fi
6371 elif enabled gcc; then
6372     check_optflags -fno-tree-vectorize
6373     check_cflags -Werror=format-security
6374     check_cflags -Werror=implicit-function-declaration
6375     check_cflags -Werror=missing-prototypes
6376     check_cflags -Werror=return-type
6377     check_cflags -Werror=vla
6378     check_cflags -Wformat
6379     check_cflags -fdiagnostics-color=auto
6380     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6381 elif enabled llvm_gcc; then
6382     check_cflags -mllvm -stack-alignment=16
6383 elif enabled clang; then
6384     check_cflags -mllvm -stack-alignment=16
6385     check_cflags -mstack-alignment=16
6386     check_cflags -Qunused-arguments
6387     check_cflags -Werror=implicit-function-declaration
6388     check_cflags -Werror=missing-prototypes
6389     check_cflags -Werror=return-type
6390 elif enabled cparser; then
6391     add_cflags -Wno-missing-variable-declarations
6392     add_cflags -Wno-empty-statement
6393 elif enabled armcc; then
6394     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6395     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6396     # 2523: use of inline assembly is deprecated
6397     add_cflags -W${armcc_opt},--diag_suppress=2523
6398     add_cflags -W${armcc_opt},--diag_suppress=1207
6399     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6400     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6401     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6402     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6403 elif enabled pathscale; then
6404     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6405     disable inline_asm
6406 elif enabled_any msvc icl; then
6407     enabled x86_32 && disable aligned_stack
6408     enabled_all x86_32 debug && add_cflags -Oy-
6409     enabled debug && add_ldflags -debug
6410     enable pragma_deprecated
6411     if enabled icl; then
6412         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6413         # (correctly) on icl 13.x.
6414         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6415             add_cflags -Qansi-alias
6416         # Some inline asm is not compilable in debug
6417         if enabled debug; then
6418             disable ebp_available
6419             disable ebx_available
6420         fi
6421     fi
6422     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6423     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6424     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6425     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6426     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6427     # MSVC 2013 and newer can handle it fine.
6428     # If this declspec fails, force including stdlib.h before the restrict redefinition
6429     # happens in config.h.
6430     if [ $_restrict != restrict ]; then
6431         check_cc <<EOF || add_cflags -FIstdlib.h
6432 __declspec($_restrict) void* foo(int);
6433 EOF
6434     fi
6435     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6436     # Issue has been fixed in MSVC v19.00.24218.
6437     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6438         check_cflags -d2SSAOptimizer-
6439     # enable utf-8 source processing on VS2015 U2 and newer
6440     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6441         add_cflags -utf-8
6442 fi
6443
6444 for pfx in "" host_; do
6445     varname=${pfx%_}cc_type
6446     eval "type=\$$varname"
6447     if [ "$type" = "msvc" ]; then
6448         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6449 static inline int foo(int a) { return a; }
6450 EOF
6451     fi
6452 done
6453
6454 case $as_type in
6455     clang)
6456         add_asflags -Qunused-arguments
6457     ;;
6458 esac
6459
6460 case $ld_type in
6461     clang)
6462         check_ldflags -Qunused-arguments
6463     ;;
6464 esac
6465
6466 enable frame_thread_encoder
6467
6468 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6469
6470 check_deps $CONFIG_LIST       \
6471            $CONFIG_EXTRA      \
6472            $HAVE_LIST         \
6473            $ALL_COMPONENTS    \
6474
6475 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"
6476
6477
6478 if test $target_os = "haiku"; then
6479     disable memalign
6480     disable posix_memalign
6481 fi
6482
6483 flatten_extralibs(){
6484     unset nested_entries
6485     list_name=$1
6486     eval list=\$${1}
6487     for entry in $list; do
6488         entry_copy=$entry
6489         resolve entry_copy
6490         append nested_entries $(filter '*_extralibs' $entry_copy)
6491         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6492         eval $entry="\$flat_entries"
6493     done
6494     append $list_name "$nested_entries"
6495
6496     resolve nested_entries
6497     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6498         flatten_extralibs $list_name
6499     fi
6500 }
6501
6502 for linkunit in $LIBRARY_LIST; do
6503     unset current_extralibs
6504     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6505     for comp in ${components}; do
6506         enabled $comp || continue
6507         comp_extralibs="${comp}_extralibs"
6508         append current_extralibs $comp_extralibs
6509     done
6510     eval prepend ${linkunit}_extralibs $current_extralibs
6511 done
6512
6513 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6514     flatten_extralibs ${linkunit}_extralibs
6515     unique  ${linkunit}_extralibs
6516     resolve ${linkunit}_extralibs
6517     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6518 done
6519
6520 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6521
6522 for thread in $THREADS_LIST; do
6523     if enabled $thread; then
6524         test -n "$thread_type" &&
6525             die "ERROR: Only one thread type must be selected." ||
6526             thread_type="$thread"
6527     fi
6528 done
6529
6530 if disabled stdatomic; then
6531     if enabled atomics_gcc; then
6532         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6533     elif enabled atomics_win32; then
6534         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6535     elif enabled atomics_suncc; then
6536         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6537     elif enabled pthreads; then
6538         add_compat atomics/pthread/stdatomic.o
6539         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6540     else
6541         enabled threads && die "Threading is enabled, but no atomics are available"
6542         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6543     fi
6544 fi
6545
6546 # Check if requested libraries were found.
6547 for lib in $AUTODETECT_LIBS; do
6548     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6549 done
6550
6551 enabled zlib && add_cppflags -DZLIB_CONST
6552
6553 # conditional library dependencies, in linking order
6554 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6555 enabled afir_filter         && prepend avfilter_deps "avcodec"
6556 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6557 enabled aresample_filter    && prepend avfilter_deps "swresample"
6558 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6559 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6560 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6561 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6562 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6563 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6564 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6565 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6566 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6567 enabled pan_filter          && prepend avfilter_deps "swresample"
6568 enabled pp_filter           && prepend avfilter_deps "postproc"
6569 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6570 enabled resample_filter && prepend avfilter_deps "avresample"
6571 enabled sab_filter          && prepend avfilter_deps "swscale"
6572 enabled scale_filter    && prepend avfilter_deps "swscale"
6573 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6574 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6575 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6576 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6577 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6578 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6579 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6580 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6581 enabled spp_filter          && prepend avfilter_deps "avcodec"
6582 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6583 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6584 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6585
6586 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6587
6588 #FIXME
6589 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6590
6591 enabled opus_decoder    && prepend avcodec_deps "swresample"
6592
6593 expand_deps(){
6594     lib_deps=${1}_deps
6595     eval "deps=\$$lib_deps"
6596     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6597     unique $lib_deps
6598 }
6599
6600 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6601 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6602
6603 map 'expand_deps $v' $LIBRARY_LIST
6604
6605 license="LGPL version 2.1 or later"
6606 if enabled nonfree; then
6607     license="nonfree and unredistributable"
6608 elif enabled gplv3; then
6609     license="GPL version 3 or later"
6610 elif enabled lgplv3; then
6611     license="LGPL version 3 or later"
6612 elif enabled gpl; then
6613     license="GPL version 2 or later"
6614 fi
6615
6616 if test "$quiet" != "yes"; then
6617
6618 echo "install prefix            $prefix"
6619 echo "source path               $source_path"
6620 echo "C compiler                $cc"
6621 echo "C library                 $libc_type"
6622 if test "$host_cc" != "$cc"; then
6623     echo "host C compiler           $host_cc"
6624     echo "host C library            $host_libc_type"
6625 fi
6626 echo "ARCH                      $arch ($cpu)"
6627 if test "$build_suffix" != ""; then
6628     echo "build suffix              $build_suffix"
6629 fi
6630 if test "$progs_suffix" != ""; then
6631     echo "progs suffix              $progs_suffix"
6632 fi
6633 if test "$extra_version" != ""; then
6634     echo "version string suffix     $extra_version"
6635 fi
6636 echo "big-endian                ${bigendian-no}"
6637 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6638 if enabled x86; then
6639     echo "standalone assembly       ${x86asm-no}"
6640     echo "x86 assembler             ${x86asmexe}"
6641     echo "MMX enabled               ${mmx-no}"
6642     echo "MMXEXT enabled            ${mmxext-no}"
6643     echo "3DNow! enabled            ${amd3dnow-no}"
6644     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6645     echo "SSE enabled               ${sse-no}"
6646     echo "SSSE3 enabled             ${ssse3-no}"
6647     echo "AESNI enabled             ${aesni-no}"
6648     echo "AVX enabled               ${avx-no}"
6649     echo "AVX2 enabled              ${avx2-no}"
6650     echo "XOP enabled               ${xop-no}"
6651     echo "FMA3 enabled              ${fma3-no}"
6652     echo "FMA4 enabled              ${fma4-no}"
6653     echo "i686 features enabled     ${i686-no}"
6654     echo "CMOV is fast              ${fast_cmov-no}"
6655     echo "EBX available             ${ebx_available-no}"
6656     echo "EBP available             ${ebp_available-no}"
6657 fi
6658 if enabled aarch64; then
6659     echo "NEON enabled              ${neon-no}"
6660     echo "VFP enabled               ${vfp-no}"
6661 fi
6662 if enabled arm; then
6663     echo "ARMv5TE enabled           ${armv5te-no}"
6664     echo "ARMv6 enabled             ${armv6-no}"
6665     echo "ARMv6T2 enabled           ${armv6t2-no}"
6666     echo "VFP enabled               ${vfp-no}"
6667     echo "NEON enabled              ${neon-no}"
6668     echo "THUMB enabled             ${thumb-no}"
6669 fi
6670 if enabled mips; then
6671     echo "MIPS FPU enabled          ${mipsfpu-no}"
6672     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6673     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6674     echo "MIPS MSA enabled          ${msa-no}"
6675     echo "LOONGSON MMI enabled      ${mmi-no}"
6676 fi
6677 if enabled ppc; then
6678     echo "AltiVec enabled           ${altivec-no}"
6679     echo "VSX enabled               ${vsx-no}"
6680     echo "POWER8 enabled            ${power8-no}"
6681     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6682     echo "dcbzl available           ${dcbzl-no}"
6683 fi
6684 echo "debug symbols             ${debug-no}"
6685 echo "strip symbols             ${stripping-no}"
6686 echo "optimize for size         ${small-no}"
6687 echo "optimizations             ${optimizations-no}"
6688 echo "static                    ${static-no}"
6689 echo "shared                    ${shared-no}"
6690 echo "postprocessing support    ${postproc-no}"
6691 echo "network support           ${network-no}"
6692 echo "threading support         ${thread_type-no}"
6693 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6694 echo "texi2html enabled         ${texi2html-no}"
6695 echo "perl enabled              ${perl-no}"
6696 echo "pod2man enabled           ${pod2man-no}"
6697 echo "makeinfo enabled          ${makeinfo-no}"
6698 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6699 test -n "$random_seed" &&
6700     echo "random seed               ${random_seed}"
6701 echo
6702
6703 echo "External libraries:"
6704 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6705 echo
6706
6707 echo "External libraries providing hardware acceleration:"
6708 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6709 echo
6710
6711 echo "Libraries:"
6712 print_enabled '' $LIBRARY_LIST | print_in_columns
6713 echo
6714
6715 echo "Programs:"
6716 print_enabled '' $PROGRAM_LIST | print_in_columns
6717 echo
6718
6719 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6720     echo "Enabled ${type}s:"
6721     eval list=\$$(toupper $type)_LIST
6722     print_enabled '_*' $list | print_in_columns
6723     echo
6724 done
6725
6726 if test -n "$ignore_tests"; then
6727     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6728     echo "Ignored FATE tests:"
6729     echo $ignore_tests | print_in_columns
6730     echo
6731 fi
6732
6733 echo "License: $license"
6734
6735 fi # test "$quiet" != "yes"
6736
6737 if test -n "$WARNINGS"; then
6738     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6739     enabled fatal_warnings && exit 1
6740 fi
6741
6742 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6743
6744 esc(){
6745     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6746 }
6747
6748 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6749
6750 enabled stripping || strip="echo skipping strip"
6751 enabled stripping || striptype=""
6752
6753 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6754
6755 cat > ffbuild/config.mak <<EOF
6756 # Automatically generated by configure - do not modify!
6757 ifndef FFMPEG_CONFIG_MAK
6758 FFMPEG_CONFIG_MAK=1
6759 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6760 prefix=$prefix
6761 LIBDIR=\$(DESTDIR)$libdir
6762 SHLIBDIR=\$(DESTDIR)$shlibdir
6763 INCDIR=\$(DESTDIR)$incdir
6764 BINDIR=\$(DESTDIR)$bindir
6765 DATADIR=\$(DESTDIR)$datadir
6766 DOCDIR=\$(DESTDIR)$docdir
6767 MANDIR=\$(DESTDIR)$mandir
6768 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6769 INSTALL_NAME_DIR=$install_name_dir
6770 SRC_PATH=$source_path
6771 SRC_LINK=$source_link
6772 ifndef MAIN_MAKEFILE
6773 SRC_PATH:=\$(SRC_PATH:.%=..%)
6774 endif
6775 CC_IDENT=$cc_ident
6776 ARCH=$arch
6777 INTRINSICS=$intrinsics
6778 CC=$cc
6779 CXX=$cxx
6780 AS=$as
6781 OBJCC=$objcc
6782 LD=$ld
6783 DEPCC=$dep_cc
6784 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6785 DEPAS=$as
6786 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6787 X86ASM=$x86asmexe
6788 DEPX86ASM=$x86asmexe
6789 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6790 AR=$ar
6791 ARFLAGS=$arflags
6792 AR_O=$ar_o
6793 AR_CMD=$ar
6794 NM_CMD=$nm
6795 RANLIB=$ranlib
6796 STRIP=$strip
6797 STRIPTYPE=$striptype
6798 NVCC=$nvcc
6799 CP=cp -p
6800 LN_S=$ln_s
6801 CPPFLAGS=$CPPFLAGS
6802 CFLAGS=$CFLAGS
6803 CXXFLAGS=$CXXFLAGS
6804 OBJCFLAGS=$OBJCFLAGS
6805 ASFLAGS=$ASFLAGS
6806 NVCCFLAGS=$nvccflags
6807 AS_C=$AS_C
6808 AS_O=$AS_O
6809 OBJCC_C=$OBJCC_C
6810 OBJCC_E=$OBJCC_E
6811 OBJCC_O=$OBJCC_O
6812 CC_C=$CC_C
6813 CC_E=$CC_E
6814 CC_O=$CC_O
6815 CXX_C=$CXX_C
6816 CXX_O=$CXX_O
6817 NVCC_C=$NVCC_C
6818 NVCC_O=$NVCC_O
6819 LD_O=$LD_O
6820 X86ASM_O=$X86ASM_O
6821 LD_LIB=$LD_LIB
6822 LD_PATH=$LD_PATH
6823 WINDRES=$windres
6824 DEPWINDRES=$dep_cc
6825 DOXYGEN=$doxygen
6826 LDFLAGS=$LDFLAGS
6827 LDEXEFLAGS=$LDEXEFLAGS
6828 LDSOFLAGS=$LDSOFLAGS
6829 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6830 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6831 X86ASMFLAGS=$X86ASMFLAGS
6832 BUILDSUF=$build_suffix
6833 PROGSSUF=$progs_suffix
6834 FULLNAME=$FULLNAME
6835 LIBPREF=$LIBPREF
6836 LIBSUF=$LIBSUF
6837 LIBNAME=$LIBNAME
6838 SLIBPREF=$SLIBPREF
6839 SLIBSUF=$SLIBSUF
6840 EXESUF=$EXESUF
6841 EXTRA_VERSION=$extra_version
6842 CCDEP=$CCDEP
6843 CXXDEP=$CXXDEP
6844 CCDEP_FLAGS=$CCDEP_FLAGS
6845 ASDEP=$ASDEP
6846 ASDEP_FLAGS=$ASDEP_FLAGS
6847 X86ASMDEP=$X86ASMDEP
6848 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6849 CC_DEPFLAGS=$CC_DEPFLAGS
6850 AS_DEPFLAGS=$AS_DEPFLAGS
6851 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6852 HOSTCC=$host_cc
6853 HOSTLD=$host_ld
6854 HOSTCFLAGS=$host_cflags
6855 HOSTCPPFLAGS=$host_cppflags
6856 HOSTEXESUF=$HOSTEXESUF
6857 HOSTLDFLAGS=$host_ldflags
6858 HOSTEXTRALIBS=$host_extralibs
6859 DEPHOSTCC=$host_cc
6860 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6861 HOSTCCDEP=$HOSTCCDEP
6862 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6863 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6864 HOSTCC_C=$HOSTCC_C
6865 HOSTCC_O=$HOSTCC_O
6866 HOSTLD_O=$HOSTLD_O
6867 TARGET_EXEC=$target_exec $target_exec_args
6868 TARGET_PATH=$target_path
6869 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6870 CFLAGS-ffplay=${sdl2_cflags}
6871 CFLAGS_HEADERS=$CFLAGS_HEADERS
6872 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6873 EXTRALIBS=$extralibs
6874 COMPAT_OBJS=$compat_objs
6875 INSTALL=$install
6876 SLIBNAME=${SLIBNAME}
6877 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6878 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6879 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6880 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6881 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6882 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6883 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6884 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6885 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6886 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6887 NOREDZONE_FLAGS=$noredzone_flags
6888 LIBFUZZER_PATH=$libfuzzer_path
6889 IGNORE_TESTS=$ignore_tests
6890 EOF
6891
6892 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6893
6894 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6895     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6896 done
6897
6898 cat > $TMPH <<EOF
6899 /* Automatically generated by configure - do not modify! */
6900 #ifndef FFMPEG_CONFIG_H
6901 #define FFMPEG_CONFIG_H
6902 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6903 #define FFMPEG_LICENSE "$(c_escape $license)"
6904 #define CONFIG_THIS_YEAR 2017
6905 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6906 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6907 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6908 #define av_restrict $_restrict
6909 #define EXTERN_PREFIX "${extern_prefix}"
6910 #define EXTERN_ASM ${extern_prefix}
6911 #define BUILDSUF "$build_suffix"
6912 #define SLIBSUF "$SLIBSUF"
6913 #define HAVE_MMX2 HAVE_MMXEXT
6914 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6915 EOF
6916
6917 test -n "$assert_level" &&
6918     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6919
6920 test -n "$malloc_prefix" &&
6921     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6922
6923 if enabled x86asm; then
6924     append config_files $TMPASM
6925     cat > $TMPASM <<EOF
6926 ; Automatically generated by configure - do not modify!
6927 EOF
6928 fi
6929
6930 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6931
6932
6933 mkdir -p doc
6934 mkdir -p tests
6935 mkdir -p tests/api
6936 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6937
6938 print_config ARCH_   "$config_files" $ARCH_LIST
6939 print_config HAVE_   "$config_files" $HAVE_LIST
6940 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6941                                      $CONFIG_EXTRA      \
6942                                      $ALL_COMPONENTS    \
6943
6944 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6945 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6946
6947 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6948 cp_if_changed $TMPH config.h
6949 touch ffbuild/.config
6950
6951 enabled x86asm && cp_if_changed $TMPASM config.asm
6952
6953 cat > $TMPH <<EOF
6954 /* Generated by ffmpeg configure */
6955 #ifndef AVUTIL_AVCONFIG_H
6956 #define AVUTIL_AVCONFIG_H
6957 EOF
6958
6959 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6960
6961 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6962
6963 cp_if_changed $TMPH libavutil/avconfig.h
6964
6965 # generate the lists of enabled components
6966 print_enabled_components(){
6967     file=$1
6968     struct_name=$2
6969     name=$3
6970     shift 3
6971     echo "static const $struct_name * const $name[] = {" > $TMPH
6972     for c in $*; do
6973         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6974     done
6975     echo "    NULL };" >> $TMPH
6976     cp_if_changed $TMPH $file
6977 }
6978
6979 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6980 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6981
6982 # Settings for pkg-config files
6983
6984 cat > $TMPH <<EOF
6985 # Automatically generated by configure - do not modify!
6986 shared=$shared
6987 build_suffix=$build_suffix
6988 prefix=$prefix
6989 libdir=$libdir
6990 incdir=$incdir
6991 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6992 source_path=${source_path}
6993 LIBPREF=${LIBPREF}
6994 LIBSUF=${LIBSUF}
6995 extralibs_avutil="$avutil_extralibs"
6996 extralibs_avcodec="$avcodec_extralibs"
6997 extralibs_avformat="$avformat_extralibs"
6998 extralibs_avdevice="$avdevice_extralibs"
6999 extralibs_avfilter="$avfilter_extralibs"
7000 extralibs_avresample="$avresample_extralibs"
7001 extralibs_postproc="$postproc_extralibs"
7002 extralibs_swscale="$swscale_extralibs"
7003 extralibs_swresample="$swresample_extralibs"
7004 EOF
7005
7006 for lib in $LIBRARY_LIST; do
7007     lib_deps="$(eval echo \$${lib}_deps)"
7008     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7009 done
7010
7011 cp_if_changed $TMPH ffbuild/config.sh