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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 230   --enable-libgme          enable Game Music Emu via libgme [no]
 231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 235   --enable-libmodplug      enable ModPlug via libmodplug [no]
 236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 237   --enable-libnut          enable NUT (de)muxing via libnut,
 238                            native (de)muxer exists [no]
 239   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 240   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 241   --enable-libopencv       enable video filtering via libopencv [no]
 242   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 243   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 244   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 245   --enable-libopus         enable Opus de/encoding via libopus [no]
 246   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 247   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 248   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 249   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 250   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 251   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 252   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 253   --enable-libsoxr         enable Include libsoxr resampling [no]
 254   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 255   --enable-libssh          enable SFTP protocol via libssh [no]
 256   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 257   --enable-libtheora       enable Theora encoding via libtheora [no]
 258   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 259   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 260   --enable-libvidstab      enable video stabilization using vid.stab [no]
 261   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 262   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 263                            native implementation exists [no]
 264   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 265   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 266   --enable-libwebp         enable WebP encoding via libwebp [no]
 267   --enable-libx264         enable H.264 encoding via x264 [no]
 268   --enable-libx265         enable HEVC encoding via x265 [no]
 269   --enable-libxavs         enable AVS encoding via xavs [no]
 270   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 271   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 272   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 273   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 274   --enable-libxvid         enable Xvid encoding via xvidcore,
 275                            native MPEG-4/Xvid encoder exists [no]
 276   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 277   --enable-libzmq          enable message passing via libzmq [no]
 278   --enable-libzvbi         enable teletext support via libzvbi [no]
 279   --disable-lzma           disable lzma [autodetect]
 280   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 281   --enable-mediacodec      enable Android MediaCodec support [no]
 282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl2           disable sdl2 [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --enable-x11grab         enable X11 grabbing (legacy) [no]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297   The following libraries provide various hardware acceleration features:
 298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 299   --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
 300   --enable-cuvid           enable Nvidia CUVID support [autodetect]
 301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 307   --enable-omx             enable OpenMAX IL code [no]
 308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 313
 314 Toolchain options:
 315   --arch=ARCH              select architecture [$arch]
 316   --cpu=CPU                select the minimum required CPU (affects
 317                            instruction selection, may crash on older CPUs)
 318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 319   --progs-suffix=SUFFIX    program name suffix []
 320   --enable-cross-compile   assume a cross-compiler is used
 321   --sysroot=PATH           root of cross-build tree
 322   --sysinclude=PATH        location of cross-build system headers
 323   --target-os=OS           compiler targets OS [$target_os]
 324   --target-exec=CMD        command to run executables on target
 325   --target-path=DIR        path to view of build directory on target
 326   --target-samples=DIR     path to samples directory on target
 327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 328   --toolchain=NAME         set tool defaults according to NAME
 329   --nm=NM                  use nm tool NM [$nm_default]
 330   --ar=AR                  use archive tool AR [$ar_default]
 331   --as=AS                  use assembler AS [$as_default]
 332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 333   --strip=STRIP            use strip tool STRIP [$strip_default]
 334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 336   --cc=CC                  use C compiler CC [$cc_default]
 337   --cxx=CXX                use C compiler CXX [$cxx_default]
 338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 340   --ld=LD                  use linker LD [$ld_default]
 341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 345   --host-cc=HOSTCC         use host C compiler HOSTCC
 346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 348   --host-ld=HOSTLD         use host linker HOSTLD
 349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 350   --host-libs=HLIBS        use libs HLIBS when linking for host
 351   --host-os=OS             compiler host OS [$target_os]
 352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 359   --extra-version=STRING   version string suffix []
 360   --optflags=OPTFLAGS      override optimization-related compiler flags
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 376   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 377
 378 Optimization options (experts only):
 379   --disable-asm            disable all assembly optimizations
 380   --disable-altivec        disable AltiVec optimizations
 381   --disable-vsx            disable VSX optimizations
 382   --disable-power8         disable POWER8 optimizations
 383   --disable-amd3dnow       disable 3DNow! optimizations
 384   --disable-amd3dnowext    disable 3DNow! extended optimizations
 385   --disable-mmx            disable MMX optimizations
 386   --disable-mmxext         disable MMXEXT optimizations
 387   --disable-sse            disable SSE optimizations
 388   --disable-sse2           disable SSE2 optimizations
 389   --disable-sse3           disable SSE3 optimizations
 390   --disable-ssse3          disable SSSE3 optimizations
 391   --disable-sse4           disable SSE4 optimizations
 392   --disable-sse42          disable SSE4.2 optimizations
 393   --disable-avx            disable AVX optimizations
 394   --disable-xop            disable XOP optimizations
 395   --disable-fma3           disable FMA3 optimizations
 396   --disable-fma4           disable FMA4 optimizations
 397   --disable-avx2           disable AVX2 optimizations
 398   --disable-aesni          disable AESNI optimizations
 399   --disable-armv5te        disable armv5te optimizations
 400   --disable-armv6          disable armv6 optimizations
 401   --disable-armv6t2        disable armv6t2 optimizations
 402   --disable-vfp            disable VFP optimizations
 403   --disable-neon           disable NEON optimizations
 404   --disable-inline-asm     disable use of inline assembly
 405   --disable-yasm           disable use of nasm/yasm assembly
 406   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 407   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 408   --disable-msa            disable MSA optimizations
 409   --disable-mipsfpu        disable floating point MIPS optimizations
 410   --disable-mmi            disable Loongson SIMD optimizations
 411   --disable-fast-unaligned consider unaligned accesses slow
 412
 413 Developer options (useful when working on FFmpeg itself):
 414   --disable-debug          disable debugging symbols
 415   --enable-debug=LEVEL     set the debug level [$debuglevel]
 416   --disable-optimizations  disable compiler optimizations
 417   --enable-extra-warnings  enable more compiler warnings
 418   --disable-stripping      disable stripping of executables and shared libraries
 419   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 420                            2 causes a slowdown at runtime.
 421   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 422   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 423                            leaks and errors, using the specified valgrind binary.
 424                            Cannot be combined with --target-exec
 425   --enable-ftrapv          Trap arithmetic overflows
 426   --samples=PATH           location of test samples for FATE, if not set use
 427                            \$FATE_SAMPLES at make invocation time.
 428   --enable-neon-clobber-test check NEON registers for clobbering (should be
 429                            used only for debugging purposes)
 430   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 431                            should be used only for debugging purposes)
 432   --enable-random          randomly enable/disable components
 433   --disable-random
 434   --enable-random=LIST     randomly enable/disable specific components or
 435   --disable-random=LIST    component groups. LIST is a comma-separated list
 436                            of NAME[:PROB] entries where NAME is a component
 437                            (group) and PROB the probability associated with
 438                            NAME (default 0.5).
 439   --random-seed=VALUE      seed value for --enable/disable-random
 440   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 441                            (only applies to --disable-optimizations builds)
 442
 443 NOTE: Object files are built at the place where configure is launched.
 444 EOF
 445   exit 0
 446 }
 447
 448 quotes='""'
 449 if test -t 1 && which tput >/dev/null 2>&1; then
 450     ncolors=$(tput colors)
 451     if test -n "$ncolors" && test $ncolors -ge 8; then
 452         bold_color=$(tput bold)
 453         warn_color=$(tput setaf 3)
 454         error_color=$(tput setaf 1)
 455         reset_color=$(tput sgr0)
 456     fi
 457     # 72 used instead of 80 since that's the default of pr
 458     ncols=$(tput cols)
 459 fi
 460 : ${ncols:=72}
 461
 462 log(){
 463     echo "$@" >> $logfile
 464 }
 465
 466 log_file(){
 467     log BEGIN $1
 468     pr -n -t $1 >> $logfile
 469     log END $1
 470 }
 471
 472 warn(){
 473     log "WARNING: $*"
 474     WARNINGS="${WARNINGS}WARNING: $*\n"
 475 }
 476
 477 die(){
 478     log "$@"
 479     echo "$error_color$bold_color$@$reset_color"
 480     cat <<EOF
 481
 482 If you think configure made a mistake, make sure you are using the latest
 483 version from Git.  If the latest version fails, report the problem to the
 484 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 485 EOF
 486     if disabled logging; then
 487         cat <<EOF
 488 Rerun configure with logging enabled (do not use --disable-logging), and
 489 include the log this produces with your report.
 490 EOF
 491     else
 492         cat <<EOF
 493 Include the log file "$logfile" produced by configure as this will help
 494 solve the problem.
 495 EOF
 496     fi
 497     exit 1
 498 }
 499
 500 # Avoid locale weirdness, besides we really just want to translate ASCII.
 501 toupper(){
 502     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 503 }
 504
 505 tolower(){
 506     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 507 }
 508
 509 c_escape(){
 510     echo "$*" | sed 's/["\\]/\\\0/g'
 511 }
 512
 513 sh_quote(){
 514     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 515     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 516     echo "$v"
 517 }
 518
 519 cleanws(){
 520     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 521 }
 522
 523 filter(){
 524     pat=$1
 525     shift
 526     for v; do
 527         eval "case $v in $pat) echo $v ;; esac"
 528     done
 529 }
 530
 531 filter_out(){
 532     pat=$1
 533     shift
 534     for v; do
 535         eval "case $v in $pat) ;; *) echo $v ;; esac"
 536     done
 537 }
 538
 539 map(){
 540     m=$1
 541     shift
 542     for v; do eval $m; done
 543 }
 544
 545 add_suffix(){
 546     suffix=$1
 547     shift
 548     for v; do echo ${v}${suffix}; done
 549 }
 550
 551 set_all(){
 552     value=$1
 553     shift
 554     for var in $*; do
 555         eval $var=$value
 556     done
 557 }
 558
 559 set_weak(){
 560     value=$1
 561     shift
 562     for var; do
 563         eval : \${$var:=$value}
 564     done
 565 }
 566
 567 sanitize_var_name(){
 568     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 569 }
 570
 571 set_safe(){
 572     var=$1
 573     shift
 574     eval $(sanitize_var_name "$var")='$*'
 575 }
 576
 577 get_safe(){
 578     eval echo \$$(sanitize_var_name "$1")
 579 }
 580
 581 pushvar(){
 582     for pvar in $*; do
 583         eval level=\${${pvar}_level:=0}
 584         eval ${pvar}_${level}="\$$pvar"
 585         eval ${pvar}_level=$(($level+1))
 586     done
 587 }
 588
 589 popvar(){
 590     for pvar in $*; do
 591         eval level=\${${pvar}_level:-0}
 592         test $level = 0 && continue
 593         eval level=$(($level-1))
 594         eval $pvar="\${${pvar}_${level}}"
 595         eval ${pvar}_level=$level
 596         eval unset ${pvar}_${level}
 597     done
 598 }
 599
 600 enable(){
 601     set_all yes $*
 602 }
 603
 604 disable(){
 605     set_all no $*
 606 }
 607
 608 enable_weak(){
 609     set_weak yes $*
 610 }
 611
 612 disable_weak(){
 613     set_weak no $*
 614 }
 615
 616 enable_safe(){
 617     for var; do
 618         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 619     done
 620 }
 621
 622 disable_safe(){
 623     for var; do
 624         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 625     done
 626 }
 627
 628 do_enable_deep(){
 629     for var; do
 630         enabled $var && continue
 631         eval sel="\$${var}_select"
 632         eval sgs="\$${var}_suggest"
 633         pushvar var sgs
 634         enable_deep $sel
 635         popvar sgs
 636         enable_deep_weak $sgs
 637         popvar var
 638     done
 639 }
 640
 641 enable_deep(){
 642     do_enable_deep $*
 643     enable $*
 644 }
 645
 646 enable_deep_weak(){
 647     for var; do
 648         disabled $var && continue
 649         pushvar var
 650         do_enable_deep $var
 651         popvar var
 652         enable_weak $var
 653     done
 654 }
 655
 656 enabled(){
 657     test "${1#!}" = "$1" && op='=' || op=!=
 658     eval test "x\$${1#!}" $op "xyes"
 659 }
 660
 661 disabled(){
 662     test "${1#!}" = "$1" && op='=' || op=!=
 663     eval test "x\$${1#!}" $op "xno"
 664 }
 665
 666 enabled_all(){
 667     for opt; do
 668         enabled $opt || return 1
 669     done
 670 }
 671
 672 disabled_all(){
 673     for opt; do
 674         disabled $opt || return 1
 675     done
 676 }
 677
 678 enabled_any(){
 679     for opt; do
 680         enabled $opt && return 0
 681     done
 682 }
 683
 684 disabled_any(){
 685     for opt; do
 686         disabled $opt && return 0
 687     done
 688     return 1
 689 }
 690
 691 set_default(){
 692     for opt; do
 693         eval : \${$opt:=\$${opt}_default}
 694     done
 695 }
 696
 697 is_in(){
 698     value=$1
 699     shift
 700     for var in $*; do
 701         [ $var = $value ] && return 0
 702     done
 703     return 1
 704 }
 705
 706 do_check_deps(){
 707     for cfg; do
 708         cfg="${cfg#!}"
 709         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 710         disabled ${cfg}_checking && continue
 711         enable ${cfg}_checking
 712         append allopts $cfg
 713
 714         eval dep_all="\$${cfg}_deps"
 715         eval dep_any="\$${cfg}_deps_any"
 716         eval dep_sel="\$${cfg}_select"
 717         eval dep_sgs="\$${cfg}_suggest"
 718         eval dep_ifa="\$${cfg}_if"
 719         eval dep_ifn="\$${cfg}_if_any"
 720
 721         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 722         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 723         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 724
 725         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 726         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 727         enabled_all  $dep_all || disable $cfg
 728         enabled_any  $dep_any || disable $cfg
 729         disabled_any $dep_sel && disable $cfg
 730
 731         if enabled $cfg; then
 732             enable_deep $dep_sel
 733             enable_deep_weak $dep_sgs
 734         fi
 735
 736         disable ${cfg}_checking
 737     done
 738 }
 739
 740 check_deps(){
 741     unset allopts
 742
 743     do_check_deps "$@"
 744
 745     for cfg in $allopts; do
 746         enabled $cfg || continue
 747         eval dep_extralibs="\$${cfg}_extralibs"
 748         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 749     done
 750 }
 751
 752 print_config(){
 753     pfx=$1
 754     files=$2
 755     shift 2
 756     map 'eval echo "$v \${$v:-no}"' "$@" |
 757     awk "BEGIN { split(\"$files\", files) }
 758         {
 759             c = \"$pfx\" toupper(\$1);
 760             v = \$2;
 761             sub(/yes/, 1, v);
 762             sub(/no/,  0, v);
 763             for (f in files) {
 764                 file = files[f];
 765                 if (file ~ /\\.h\$/) {
 766                     printf(\"#define %s %d\\n\", c, v) >>file;
 767                 } else if (file ~ /\\.asm\$/) {
 768                     printf(\"%%define %s %d\\n\", c, v) >>file;
 769                 } else if (file ~ /\\.mak\$/) {
 770                     n = -v ? \"\" : \"!\";
 771                     printf(\"%s%s=yes\\n\", n, c) >>file;
 772                 } else if (file ~ /\\.texi\$/) {
 773                     pre = -v ? \"\" : \"@c \";
 774                     yesno = \$2;
 775                     c2 = tolower(c);
 776                     gsub(/_/, \"-\", c2);
 777                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 778                 }
 779             }
 780         }"
 781 }
 782
 783 print_enabled(){
 784     suf=$1
 785     shift
 786     for v; do
 787         enabled $v && printf "%s\n" ${v%$suf}
 788     done
 789 }
 790
 791 append(){
 792     var=$1
 793     shift
 794     eval "$var=\"\$$var $*\""
 795 }
 796
 797 prepend(){
 798     var=$1
 799     shift
 800     eval "$var=\"$* \$$var\""
 801 }
 802
 803 unique(){
 804     var=$1
 805     uniq_list=""
 806     for tok in $(eval echo \$$var); do
 807         uniq_list="$(filter_out $tok $uniq_list) $tok"
 808     done
 809     eval "$var=\"${uniq_list}\""
 810 }
 811
 812 add_cppflags(){
 813     append CPPFLAGS "$@"
 814 }
 815
 816 add_cflags(){
 817     append CFLAGS $($cflags_filter "$@")
 818 }
 819
 820 add_cxxflags(){
 821     append CXXFLAGS $($cflags_filter "$@")
 822 }
 823
 824 add_asflags(){
 825     append ASFLAGS $($asflags_filter "$@")
 826 }
 827
 828 add_objcflags(){
 829     append OBJCFLAGS $($objcflags_filter "$@")
 830 }
 831
 832 add_ldflags(){
 833     append LDFLAGS $($ldflags_filter "$@")
 834 }
 835
 836 add_ldexeflags(){
 837     append LDEXEFLAGS $($ldflags_filter "$@")
 838 }
 839
 840 add_ldlibflags(){
 841     append LDLIBFLAGS $($ldflags_filter "$@")
 842 }
 843
 844 add_stripflags(){
 845     append ASMSTRIPFLAGS "$@"
 846 }
 847
 848 add_extralibs(){
 849     prepend extralibs $($ldflags_filter "$@")
 850 }
 851
 852 add_host_cppflags(){
 853     append host_cppflags "$@"
 854 }
 855
 856 add_host_cflags(){
 857     append host_cflags $($host_cflags_filter "$@")
 858 }
 859
 860 add_host_ldflags(){
 861     append host_ldflags $($host_ldflags_filter "$@")
 862 }
 863
 864 add_compat(){
 865     append compat_objs $1
 866     shift
 867     map 'add_cppflags -D$v' "$@"
 868 }
 869
 870 check_cmd(){
 871     log "$@"
 872     "$@" >> $logfile 2>&1
 873 }
 874
 875 check_stat(){
 876     log check_stat "$@"
 877     stat "$1" >> $logfile 2>&1
 878 }
 879
 880 cc_o(){
 881     eval printf '%s\\n' $CC_O
 882 }
 883
 884 cc_e(){
 885     eval printf '%s\\n' $CC_E
 886 }
 887
 888 check_cc(){
 889     log check_cc "$@"
 890     cat > $TMPC
 891     log_file $TMPC
 892     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 893 }
 894
 895 check_cxx(){
 896     log check_cxx "$@"
 897     cat > $TMPCPP
 898     log_file $TMPCPP
 899     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 900 }
 901
 902 check_objcc(){
 903     log check_objcc "$@"
 904     cat > $TMPM
 905     log_file $TMPM
 906     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 907 }
 908
 909 check_cpp(){
 910     log check_cpp "$@"
 911     cat > $TMPC
 912     log_file $TMPC
 913     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 914 }
 915
 916 as_o(){
 917     eval printf '%s\\n' $AS_O
 918 }
 919
 920 check_as(){
 921     log check_as "$@"
 922     cat > $TMPS
 923     log_file $TMPS
 924     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 925 }
 926
 927 check_inline_asm(){
 928     log check_inline_asm "$@"
 929     name="$1"
 930     code="$2"
 931     shift 2
 932     disable $name
 933     check_cc "$@" <<EOF && enable $name
 934 void foo(void){ __asm__ volatile($code); }
 935 EOF
 936 }
 937
 938 check_inline_asm_flags(){
 939     log check_inline_asm_flags "$@"
 940     name="$1"
 941     code="$2"
 942     flags=''
 943     shift 2
 944     while [ "$1" != "" ]; do
 945       append flags $1
 946       shift
 947     done;
 948     disable $name
 949     cat > $TMPC <<EOF
 950 void foo(void){ __asm__ volatile($code); }
 951 EOF
 952     log_file $TMPC
 953     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 954     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 955 }
 956
 957 check_insn(){
 958     log check_insn "$@"
 959     check_inline_asm ${1}_inline "\"$2\""
 960     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 961 }
 962
 963 check_yasm(){
 964     log check_yasm "$@"
 965     echo "$1" > $TMPS
 966     log_file $TMPS
 967     shift 1
 968     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 969 }
 970
 971 ld_o(){
 972     eval printf '%s\\n' $LD_O
 973 }
 974
 975 check_ld(){
 976     log check_ld "$@"
 977     type=$1
 978     shift 1
 979     flags=$(filter_out '-l*|*.so' $@)
 980     libs=$(filter '-l*|*.so' $@)
 981     check_$type $($cflags_filter $flags) || return
 982     flags=$($ldflags_filter $flags)
 983     libs=$($ldflags_filter $libs)
 984     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 985 }
 986
 987 print_include(){
 988     hdr=$1
 989     test "${hdr%.h}" = "${hdr}" &&
 990         echo "#include $hdr"    ||
 991         echo "#include <$hdr>"
 992 }
 993
 994 check_code(){
 995     log check_code "$@"
 996     check=$1
 997     headers=$2
 998     code=$3
 999     shift 3
1000     {
1001         for hdr in $headers; do
1002             print_include $hdr
1003         done
1004         echo "int main(void) { $code; return 0; }"
1005     } | check_$check "$@"
1006 }
1007
1008 check_cppflags(){
1009     log check_cppflags "$@"
1010     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1011 int x;
1012 EOF
1013 }
1014
1015 test_cflags(){
1016     log test_cflags "$@"
1017     set -- $($cflags_filter "$@")
1018     check_cc "$@" <<EOF
1019 int x;
1020 EOF
1021 }
1022
1023 check_cflags(){
1024     log check_cflags "$@"
1025     test_cflags "$@" && add_cflags "$@"
1026 }
1027
1028 check_cxxflags(){
1029     log check_cxxflags "$@"
1030     set -- $($cflags_filter "$@")
1031     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1032 int x;
1033 EOF
1034 }
1035
1036 test_objcflags(){
1037     log test_cflags "$@"
1038     set -- $($cflags_filter "$@")
1039     check_objcc "$@" <<EOF
1040 int x;
1041 EOF
1042 }
1043
1044 check_objcflags(){
1045     log check_cflags "$@"
1046     test_objcflags "$@" && add_objcflags "$@"
1047 }
1048
1049 test_ldflags(){
1050     log test_ldflags "$@"
1051     check_ld "cc" "$@" <<EOF
1052 int main(void){ return 0; }
1053 EOF
1054 }
1055
1056 check_ldflags(){
1057     log check_ldflags "$@"
1058     test_ldflags "$@" && add_ldflags "$@"
1059 }
1060
1061 test_stripflags(){
1062     log test_stripflags "$@"
1063     # call check_cc to get a fresh TMPO
1064     check_cc <<EOF
1065 int main(void) { return 0; }
1066 EOF
1067     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1068 }
1069
1070 check_stripflags(){
1071     log check_stripflags "$@"
1072     test_stripflags "$@" && add_stripflags "$@"
1073 }
1074
1075 check_header(){
1076     log check_header "$@"
1077     header=$1
1078     shift
1079     disable_safe $header
1080     check_cpp "$@" <<EOF && enable_safe $header
1081 #include <$header>
1082 int x;
1083 EOF
1084 }
1085
1086 check_header_objcc(){
1087     log check_header_objcc "$@"
1088     rm -f -- "$TMPO"
1089     header=$1
1090     shift
1091     disable_safe $header
1092     {
1093        echo "#include <$header>"
1094        echo "int main(void) { return 0; }"
1095     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1096 }
1097
1098 check_func(){
1099     log check_func "$@"
1100     func=$1
1101     shift
1102     disable $func
1103     check_ld "cc" "$@" <<EOF && enable $func
1104 extern int $func();
1105 int main(void){ $func(); }
1106 EOF
1107 }
1108
1109 check_complexfunc(){
1110     log check_complexfunc "$@"
1111     func=$1
1112     narg=$2
1113     shift 2
1114     test $narg = 2 && args="f, g" || args="f * I"
1115     disable $func
1116     check_ld "cc" "$@" <<EOF && enable $func
1117 #include <complex.h>
1118 #include <math.h>
1119 float foo(complex float f, complex float g) { return $func($args); }
1120 int main(void){ return (int) foo; }
1121 EOF
1122 }
1123
1124 check_mathfunc(){
1125     log check_mathfunc "$@"
1126     func=$1
1127     narg=$2
1128     shift 2
1129     test $narg = 2 && args="f, g" || args="f"
1130     disable $func
1131     check_ld "cc" "$@" <<EOF && enable $func
1132 #include <math.h>
1133 float foo(float f, float g) { return $func($args); }
1134 int main(void){ return (int) foo; }
1135 EOF
1136 }
1137
1138 check_func_headers(){
1139     log check_func_headers "$@"
1140     headers=$1
1141     funcs=$2
1142     shift 2
1143     {
1144         for hdr in $headers; do
1145             print_include $hdr
1146         done
1147         echo "#include <stdint.h>"
1148         for func in $funcs; do
1149             echo "long check_$func(void) { return (long) $func; }"
1150         done
1151         echo "int main(void) { int ret = 0;"
1152         # LTO could optimize out the test functions without this
1153         for func in $funcs; do
1154             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1155         done
1156         echo "return ret; }"
1157     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1158 }
1159
1160 check_class_headers_cpp(){
1161     log check_class_headers_cpp "$@"
1162     headers=$1
1163     classes=$2
1164     shift 2
1165     {
1166         for hdr in $headers; do
1167             echo "#include <$hdr>"
1168         done
1169         echo "int main(void) { "
1170         i=1
1171         for class in $classes; do
1172             echo "$class obj$i;"
1173             i=$(expr $i + 1)
1174         done
1175         echo "return 0; }"
1176     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1177 }
1178
1179 check_cpp_condition(){
1180     log check_cpp_condition "$@"
1181     header=$1
1182     condition=$2
1183     shift 2
1184     check_cpp "$@" <<EOF
1185 #include <$header>
1186 #if !($condition)
1187 #error "unsatisfied condition: $condition"
1188 #endif
1189 EOF
1190 }
1191
1192 check_lib(){
1193     log check_lib "$@"
1194     header="$1"
1195     func="$2"
1196     shift 2
1197     check_header $header && check_func $func "$@" && add_extralibs "$@"
1198 }
1199
1200 check_lib2(){
1201     log check_lib2 "$@"
1202     headers="$1"
1203     funcs="$2"
1204     shift 2
1205     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1206 }
1207
1208 check_lib_cpp(){
1209     log check_lib_cpp "$@"
1210     headers="$1"
1211     classes="$2"
1212     shift 2
1213     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1214 }
1215
1216 check_pkg_config(){
1217     log check_pkg_config "$@"
1218     pkgandversion="$1"
1219     pkg="${1%% *}"
1220     headers="$2"
1221     funcs="$3"
1222     shift 3
1223     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1224     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1225     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1226     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1227         set_safe "${pkg}_cflags" $pkg_cflags   &&
1228         set_safe "${pkg}_libs"   $pkg_libs
1229 }
1230
1231 check_exec(){
1232     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1233 }
1234
1235 check_exec_crash(){
1236     code=$(cat)
1237
1238     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1239     # are safe but may not be available everywhere.  Thus we use
1240     # raise(SIGTERM) instead.  The check is run in a subshell so we
1241     # can redirect the "Terminated" message from the shell.  SIGBUS
1242     # is not defined by standard C so it is used conditionally.
1243
1244     (check_exec "$@") >> $logfile 2>&1 <<EOF
1245 #include <signal.h>
1246 static void sighandler(int sig){
1247     raise(SIGTERM);
1248 }
1249 int foo(void){
1250     $code
1251 }
1252 int (*func_ptr)(void) = foo;
1253 int main(void){
1254     signal(SIGILL, sighandler);
1255     signal(SIGFPE, sighandler);
1256     signal(SIGSEGV, sighandler);
1257 #ifdef SIGBUS
1258     signal(SIGBUS, sighandler);
1259 #endif
1260     return func_ptr();
1261 }
1262 EOF
1263 }
1264
1265 check_type(){
1266     log check_type "$@"
1267     headers=$1
1268     type=$2
1269     shift 2
1270     disable_safe "$type"
1271     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1272 }
1273
1274 check_struct(){
1275     log check_struct "$@"
1276     headers=$1
1277     struct=$2
1278     member=$3
1279     shift 3
1280     disable_safe "${struct}_${member}"
1281     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1282         enable_safe "${struct}_${member}"
1283 }
1284
1285 check_builtin(){
1286     log check_builtin "$@"
1287     name=$1
1288     headers=$2
1289     builtin=$3
1290     shift 3
1291     disable "$name"
1292     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1293 }
1294
1295 check_compile_assert(){
1296     log check_compile_assert "$@"
1297     name=$1
1298     headers=$2
1299     condition=$3
1300     shift 3
1301     disable "$name"
1302     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1303 }
1304
1305 require(){
1306     name="$1"
1307     header="$2"
1308     func="$3"
1309     shift 3
1310     check_lib $header $func "$@" || die "ERROR: $name not found"
1311 }
1312
1313 require2(){
1314     name="$1"
1315     headers="$2"
1316     func="$3"
1317     shift 3
1318     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1319 }
1320
1321 require_cpp(){
1322     name="$1"
1323     headers="$2"
1324     classes="$3"
1325     shift 3
1326     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1327 }
1328
1329 use_pkg_config(){
1330     pkg="$1"
1331     check_pkg_config "$@" || return 1
1332     add_cflags    $(get_safe "${pkg}_cflags")
1333     add_extralibs $(get_safe "${pkg}_libs")
1334 }
1335
1336 require_pkg_config(){
1337     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1338 }
1339
1340 require_libfreetype(){
1341     log require_libfreetype "$@"
1342     pkg="freetype2"
1343     check_cmd $pkg_config --exists --print-errors $pkg \
1344       || die "ERROR: $pkg not found"
1345     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1346     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1347     {
1348         echo "#include <ft2build.h>"
1349         echo "#include FT_FREETYPE_H"
1350         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1351         echo "int main(void) { return 0; }"
1352     } | check_ld "cc" $pkg_cflags $pkg_libs \
1353       && set_safe "${pkg}_cflags" $pkg_cflags \
1354       && set_safe "${pkg}_libs"   $pkg_libs \
1355       || die "ERROR: $pkg not found"
1356     add_cflags    $(get_safe "${pkg}_cflags")
1357     add_extralibs $(get_safe "${pkg}_libs")
1358 }
1359
1360 hostcc_e(){
1361     eval printf '%s\\n' $HOSTCC_E
1362 }
1363
1364 hostcc_o(){
1365     eval printf '%s\\n' $HOSTCC_O
1366 }
1367
1368 check_host_cc(){
1369     log check_host_cc "$@"
1370     cat > $TMPC
1371     log_file $TMPC
1372     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1373 }
1374
1375 check_host_cpp(){
1376     log check_host_cpp "$@"
1377     cat > $TMPC
1378     log_file $TMPC
1379     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1380 }
1381
1382 check_host_cppflags(){
1383     log check_host_cppflags "$@"
1384     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1385 int x;
1386 EOF
1387 }
1388
1389 check_host_cflags(){
1390     log check_host_cflags "$@"
1391     set -- $($host_cflags_filter "$@")
1392     check_host_cc "$@" <<EOF && append host_cflags "$@"
1393 int x;
1394 EOF
1395 }
1396
1397 check_host_cpp_condition(){
1398     log check_host_cpp_condition "$@"
1399     header=$1
1400     condition=$2
1401     shift 2
1402     check_host_cpp "$@" <<EOF
1403 #include <$header>
1404 #if !($condition)
1405 #error "unsatisfied condition: $condition"
1406 #endif
1407 EOF
1408 }
1409
1410 cp_if_changed(){
1411     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1412     mkdir -p "$(dirname $2)"
1413     $cp_f "$1" "$2"
1414 }
1415
1416 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1417 # system-dependent things.
1418
1419 AVCODEC_COMPONENTS="
1420     bsfs
1421     decoders
1422     encoders
1423     hwaccels
1424     parsers
1425 "
1426
1427 AVDEVICE_COMPONENTS="
1428     indevs
1429     outdevs
1430 "
1431 AVFILTER_COMPONENTS="
1432     filters
1433 "
1434 AVFORMAT_COMPONENTS="
1435     demuxers
1436     muxers
1437     protocols
1438 "
1439
1440 AVRESAMPLE_COMPONENTS=""
1441 AVUTIL_COMPONENTS=""
1442
1443 COMPONENT_LIST="
1444     $AVCODEC_COMPONENTS
1445     $AVDEVICE_COMPONENTS
1446     $AVFILTER_COMPONENTS
1447     $AVFORMAT_COMPONENTS
1448     $AVRESAMPLE_COMPONENTS
1449     $AVUTIL_COMPONENTS
1450 "
1451
1452 EXAMPLE_LIST="
1453     avio_dir_cmd_example
1454     avio_reading_example
1455     decoding_encoding_example
1456     demuxing_decoding_example
1457     extract_mvs_example
1458     filter_audio_example
1459     filtering_audio_example
1460     filtering_video_example
1461     http_multiclient_example
1462     metadata_example
1463     muxing_example
1464     qsvdec_example
1465     remuxing_example
1466     resampling_audio_example
1467     scaling_video_example
1468     transcode_aac_example
1469     transcoding_example
1470 "
1471
1472 EXTERNAL_LIBRARY_LIST="
1473     avisynth
1474     bzlib
1475     chromaprint
1476     crystalhd
1477     decklink
1478     frei0r
1479     gcrypt
1480     gmp
1481     gnutls
1482     iconv
1483     jni
1484     ladspa
1485     libass
1486     libbluray
1487     libbs2b
1488     libcaca
1489     libcdio
1490     libcelt
1491     libdc1394
1492     libfdk_aac
1493     libflite
1494     libfontconfig
1495     libfreetype
1496     libfribidi
1497     libgme
1498     libgsm
1499     libiec61883
1500     libilbc
1501     libkvazaar
1502     libmodplug
1503     libmp3lame
1504     libnut
1505     libopencore_amrnb
1506     libopencore_amrwb
1507     libopencv
1508     libopenh264
1509     libopenjpeg
1510     libopenmpt
1511     libopus
1512     libpulse
1513     librtmp
1514     librubberband
1515     libschroedinger
1516     libshine
1517     libsmbclient
1518     libsnappy
1519     libsoxr
1520     libspeex
1521     libssh
1522     libtesseract
1523     libtheora
1524     libtwolame
1525     libv4l2
1526     libvidstab
1527     libvo_amrwbenc
1528     libvorbis
1529     libvpx
1530     libwavpack
1531     libwebp
1532     libx264
1533     libx265
1534     libxavs
1535     libxcb
1536     libxcb_shm
1537     libxcb_shape
1538     libxcb_xfixes
1539     libxvid
1540     libzimg
1541     libzmq
1542     libzvbi
1543     lzma
1544     mediacodec
1545     netcdf
1546     openal
1547     opencl
1548     opengl
1549     openssl
1550     schannel
1551     sdl
1552     sdl2
1553     securetransport
1554     videotoolbox
1555     x11grab
1556     xlib
1557     zlib
1558 "
1559
1560 HWACCEL_LIBRARY_LIST="
1561     audiotoolbox
1562     cuda
1563     cuvid
1564     d3d11va
1565     dxva2
1566     libmfx
1567     libnpp
1568     mmal
1569     nvenc
1570     omx
1571     vaapi
1572     vda
1573     vdpau
1574     videotoolbox_hwaccel
1575     xvmc
1576 "
1577
1578 DOCUMENT_LIST="
1579     doc
1580     htmlpages
1581     manpages
1582     podpages
1583     txtpages
1584 "
1585
1586 FEATURE_LIST="
1587     ftrapv
1588     gray
1589     hardcoded_tables
1590     omx_rpi
1591     runtime_cpudetect
1592     safe_bitstream_reader
1593     shared
1594     small
1595     static
1596     swscale_alpha
1597 "
1598
1599 LIBRARY_LIST="
1600     avcodec
1601     avdevice
1602     avfilter
1603     avformat
1604     avresample
1605     avutil
1606     postproc
1607     swresample
1608     swscale
1609 "
1610
1611 LICENSE_LIST="
1612     gpl
1613     nonfree
1614     version3
1615 "
1616
1617 PROGRAM_LIST="
1618     ffplay
1619     ffprobe
1620     ffserver
1621     ffmpeg
1622 "
1623
1624 SUBSYSTEM_LIST="
1625     dct
1626     dwt
1627     error_resilience
1628     faan
1629     fast_unaligned
1630     fft
1631     lsp
1632     lzo
1633     mdct
1634     pixelutils
1635     network
1636     rdft
1637 "
1638
1639 CONFIG_LIST="
1640     $COMPONENT_LIST
1641     $DOCUMENT_LIST
1642     $EXAMPLE_LIST
1643     $EXTERNAL_LIBRARY_LIST
1644     $HWACCEL_LIBRARY_LIST
1645     $FEATURE_LIST
1646     $LICENSE_LIST
1647     $LIBRARY_LIST
1648     $PROGRAM_LIST
1649     $SUBSYSTEM_LIST
1650     fontconfig
1651     memalign_hack
1652     memory_poisoning
1653     neon_clobber_test
1654     pic
1655     pod2man
1656     raise_major
1657     thumb
1658     valgrind_backtrace
1659     xmm_clobber_test
1660 "
1661
1662 THREADS_LIST="
1663     pthreads
1664     os2threads
1665     w32threads
1666 "
1667
1668 ATOMICS_LIST="
1669     atomics_gcc
1670     atomics_suncc
1671     atomics_win32
1672 "
1673
1674 ARCH_LIST="
1675     aarch64
1676     alpha
1677     arm
1678     avr32
1679     avr32_ap
1680     avr32_uc
1681     bfin
1682     ia64
1683     m68k
1684     mips
1685     mips64
1686     parisc
1687     ppc
1688     ppc64
1689     s390
1690     sh4
1691     sparc
1692     sparc64
1693     tilegx
1694     tilepro
1695     tomi
1696     x86
1697     x86_32
1698     x86_64
1699 "
1700
1701 ARCH_EXT_LIST_ARM="
1702     armv5te
1703     armv6
1704     armv6t2
1705     armv8
1706     neon
1707     vfp
1708     vfpv3
1709     setend
1710 "
1711
1712 ARCH_EXT_LIST_MIPS="
1713     mipsfpu
1714     mips32r2
1715     mips32r5
1716     mips64r2
1717     mips32r6
1718     mips64r6
1719     mipsdsp
1720     mipsdspr2
1721     msa
1722 "
1723
1724 ARCH_EXT_LIST_LOONGSON="
1725     loongson2
1726     loongson3
1727     mmi
1728 "
1729
1730 ARCH_EXT_LIST_X86_SIMD="
1731     aesni
1732     amd3dnow
1733     amd3dnowext
1734     avx
1735     avx2
1736     fma3
1737     fma4
1738     mmx
1739     mmxext
1740     sse
1741     sse2
1742     sse3
1743     sse4
1744     sse42
1745     ssse3
1746     xop
1747 "
1748
1749 ARCH_EXT_LIST_PPC="
1750     altivec
1751     dcbzl
1752     ldbrx
1753     power8
1754     ppc4xx
1755     vsx
1756 "
1757
1758 ARCH_EXT_LIST_X86="
1759     $ARCH_EXT_LIST_X86_SIMD
1760     cpunop
1761     i686
1762 "
1763
1764 ARCH_EXT_LIST="
1765     $ARCH_EXT_LIST_ARM
1766     $ARCH_EXT_LIST_PPC
1767     $ARCH_EXT_LIST_X86
1768     $ARCH_EXT_LIST_MIPS
1769     $ARCH_EXT_LIST_LOONGSON
1770 "
1771
1772 ARCH_FEATURES="
1773     aligned_stack
1774     fast_64bit
1775     fast_clz
1776     fast_cmov
1777     local_aligned_8
1778     local_aligned_16
1779     local_aligned_32
1780     simd_align_16
1781 "
1782
1783 BUILTIN_LIST="
1784     atomic_cas_ptr
1785     atomic_compare_exchange
1786     machine_rw_barrier
1787     MemoryBarrier
1788     mm_empty
1789     rdtsc
1790     sarestart
1791     sem_timedwait
1792     sync_val_compare_and_swap
1793 "
1794 HAVE_LIST_CMDLINE="
1795     inline_asm
1796     symver
1797     yasm
1798 "
1799
1800 HAVE_LIST_PUB="
1801     bigendian
1802     fast_unaligned
1803 "
1804
1805 HEADERS_LIST="
1806     alsa_asoundlib_h
1807     altivec_h
1808     arpa_inet_h
1809     asm_types_h
1810     cdio_paranoia_h
1811     cdio_paranoia_paranoia_h
1812     dispatch_dispatch_h
1813     dev_bktr_ioctl_bt848_h
1814     dev_bktr_ioctl_meteor_h
1815     dev_ic_bt8xx_h
1816     dev_video_bktr_ioctl_bt848_h
1817     dev_video_meteor_ioctl_meteor_h
1818     direct_h
1819     dirent_h
1820     dlfcn_h
1821     d3d11_h
1822     dxva_h
1823     ES2_gl_h
1824     gsm_h
1825     io_h
1826     mach_mach_time_h
1827     machine_ioctl_bt848_h
1828     machine_ioctl_meteor_h
1829     malloc_h
1830     opencv2_core_core_c_h
1831     openjpeg_2_1_openjpeg_h
1832     openjpeg_2_0_openjpeg_h
1833     openjpeg_1_5_openjpeg_h
1834     OpenGL_gl3_h
1835     poll_h
1836     sndio_h
1837     soundcard_h
1838     sys_mman_h
1839     sys_param_h
1840     sys_resource_h
1841     sys_select_h
1842     sys_soundcard_h
1843     sys_time_h
1844     sys_un_h
1845     sys_videoio_h
1846     termios_h
1847     udplite_h
1848     unistd_h
1849     valgrind_valgrind_h
1850     windows_h
1851     winsock2_h
1852 "
1853
1854 INTRINSICS_LIST="
1855     intrinsics_neon
1856 "
1857
1858 COMPLEX_FUNCS="
1859     cabs
1860     cexp
1861 "
1862
1863 MATH_FUNCS="
1864     atanf
1865     atan2f
1866     cbrt
1867     cbrtf
1868     copysign
1869     cosf
1870     erf
1871     exp2
1872     exp2f
1873     expf
1874     hypot
1875     isfinite
1876     isinf
1877     isnan
1878     ldexpf
1879     llrint
1880     llrintf
1881     log2
1882     log2f
1883     log10f
1884     lrint
1885     lrintf
1886     powf
1887     rint
1888     round
1889     roundf
1890     sinf
1891     trunc
1892     truncf
1893 "
1894
1895 SYSTEM_FUNCS="
1896     access
1897     aligned_malloc
1898     arc4random
1899     clock_gettime
1900     closesocket
1901     CommandLineToArgvW
1902     CoTaskMemFree
1903     CryptGenRandom
1904     dlopen
1905     fcntl
1906     flt_lim
1907     fork
1908     getaddrinfo
1909     gethrtime
1910     getopt
1911     GetProcessAffinityMask
1912     GetProcessMemoryInfo
1913     GetProcessTimes
1914     getrusage
1915     GetSystemTimeAsFileTime
1916     gettimeofday
1917     glob
1918     glXGetProcAddress
1919     gmtime_r
1920     inet_aton
1921     isatty
1922     jack_port_get_latency_range
1923     kbhit
1924     LoadLibrary
1925     localtime_r
1926     lstat
1927     lzo1x_999_compress
1928     mach_absolute_time
1929     MapViewOfFile
1930     memalign
1931     mkstemp
1932     mmap
1933     mprotect
1934     nanosleep
1935     PeekNamedPipe
1936     posix_memalign
1937     pthread_cancel
1938     sched_getaffinity
1939     SetConsoleTextAttribute
1940     SetConsoleCtrlHandler
1941     setmode
1942     setrlimit
1943     Sleep
1944     strerror_r
1945     sysconf
1946     sysctl
1947     usleep
1948     UTGetOSTypeFromString
1949     VirtualAlloc
1950     wglGetProcAddress
1951 "
1952
1953 TOOLCHAIN_FEATURES="
1954     as_dn_directive
1955     as_func
1956     as_object_arch
1957     asm_mod_q
1958     attribute_may_alias
1959     attribute_packed
1960     ebp_available
1961     ebx_available
1962     gnu_as
1963     gnu_windres
1964     ibm_asm
1965     inline_asm_direct_symbol_refs
1966     inline_asm_labels
1967     inline_asm_nonlocal_labels
1968     pragma_deprecated
1969     rsync_contimeout
1970     symver_asm_label
1971     symver_gnu_asm
1972     vfp_args
1973     xform_asm
1974     xmm_clobbers
1975 "
1976
1977 TYPES_LIST="
1978     CONDITION_VARIABLE_Ptr
1979     socklen_t
1980     struct_addrinfo
1981     struct_group_source_req
1982     struct_ip_mreq_source
1983     struct_ipv6_mreq
1984     struct_msghdr_msg_flags
1985     struct_pollfd
1986     struct_rusage_ru_maxrss
1987     struct_sctp_event_subscribe
1988     struct_sockaddr_in6
1989     struct_sockaddr_sa_len
1990     struct_sockaddr_storage
1991     struct_stat_st_mtim_tv_nsec
1992     struct_v4l2_frmivalenum_discrete
1993 "
1994
1995 HAVE_LIST="
1996     $ARCH_EXT_LIST
1997     $(add_suffix _external $ARCH_EXT_LIST)
1998     $(add_suffix _inline   $ARCH_EXT_LIST)
1999     $ARCH_FEATURES
2000     $ATOMICS_LIST
2001     $BUILTIN_LIST
2002     $COMPLEX_FUNCS
2003     $HAVE_LIST_CMDLINE
2004     $HAVE_LIST_PUB
2005     $HEADERS_LIST
2006     $INTRINSICS_LIST
2007     $MATH_FUNCS
2008     $SYSTEM_FUNCS
2009     $THREADS_LIST
2010     $TOOLCHAIN_FEATURES
2011     $TYPES_LIST
2012     atomics_native
2013     dos_paths
2014     dxva2_lib
2015     dxva2api_cobj
2016     libc_msvcrt
2017     libdc1394_1
2018     libdc1394_2
2019     makeinfo
2020     makeinfo_html
2021     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2022     perl
2023     pod2man
2024     sdl2
2025     section_data_rel_ro
2026     texi2html
2027     threads
2028     vaapi_drm
2029     vaapi_x11
2030     vdpau_x11
2031     winrt
2032     xlib
2033 "
2034
2035 # options emitted with CONFIG_ prefix but not available on the command line
2036 CONFIG_EXTRA="
2037     aandcttables
2038     ac3dsp
2039     audio_frame_queue
2040     audiodsp
2041     blockdsp
2042     bswapdsp
2043     cabac
2044     dirac_parse
2045     dvprofile
2046     exif
2047     faandct
2048     faanidct
2049     fdctdsp
2050     flacdsp
2051     fmtconvert
2052     frame_thread_encoder
2053     g722dsp
2054     golomb
2055     gplv3
2056     h263dsp
2057     h264chroma
2058     h264dsp
2059     h264parse
2060     h264pred
2061     h264qpel
2062     hpeldsp
2063     huffman
2064     huffyuvdsp
2065     huffyuvencdsp
2066     idctdsp
2067     iirfilter
2068     imdct15
2069     intrax8
2070     iso_media
2071     ividsp
2072     jpegtables
2073     lgplv3
2074     libx262
2075     llauddsp
2076     llviddsp
2077     lpc
2078     lzf
2079     me_cmp
2080     mpeg_er
2081     mpegaudio
2082     mpegaudiodsp
2083     mpegvideo
2084     mpegvideoenc
2085     mss34dsp
2086     pixblockdsp
2087     qpeldsp
2088     qsv
2089     qsvdec
2090     qsvenc
2091     rangecoder
2092     riffdec
2093     riffenc
2094     rtpdec
2095     rtpenc_chain
2096     rv34dsp
2097     sinewin
2098     snappy
2099     srtp
2100     startcode
2101     texturedsp
2102     texturedspenc
2103     tpeldsp
2104     vaapi_encode
2105     vc1dsp
2106     videodsp
2107     vp3dsp
2108     vp56dsp
2109     vp8dsp
2110     vt_bt2020
2111     wma_freqs
2112     wmv2dsp
2113 "
2114
2115 CMDLINE_SELECT="
2116     $ARCH_EXT_LIST
2117     $CONFIG_LIST
2118     $HAVE_LIST_CMDLINE
2119     $THREADS_LIST
2120     asm
2121     cross_compile
2122     debug
2123     extra_warnings
2124     logging
2125     lto
2126     optimizations
2127     rpath
2128     stripping
2129 "
2130
2131 PATHS_LIST="
2132     bindir
2133     datadir
2134     docdir
2135     incdir
2136     libdir
2137     mandir
2138     pkgconfigdir
2139     prefix
2140     shlibdir
2141     install_name_dir
2142 "
2143
2144 CMDLINE_SET="
2145     $PATHS_LIST
2146     ar
2147     arch
2148     as
2149     assert_level
2150     build_suffix
2151     cc
2152     objcc
2153     cpu
2154     cross_prefix
2155     custom_allocator
2156     cxx
2157     dep_cc
2158     doxygen
2159     env
2160     extra_version
2161     gas
2162     host_cc
2163     host_cflags
2164     host_ld
2165     host_ldflags
2166     host_libs
2167     host_os
2168     install
2169     ld
2170     ln_s
2171     logfile
2172     malloc_prefix
2173     nm
2174     optflags
2175     pkg_config
2176     pkg_config_flags
2177     progs_suffix
2178     random_seed
2179     ranlib
2180     samples
2181     strip
2182     sws_max_filter_size
2183     sysinclude
2184     sysroot
2185     target_exec
2186     target_os
2187     target_path
2188     target_samples
2189     tempprefix
2190     toolchain
2191     valgrind
2192     yasmexe
2193 "
2194
2195 CMDLINE_APPEND="
2196     extra_cflags
2197     extra_cxxflags
2198     extra_objcflags
2199     host_cppflags
2200 "
2201
2202 # code dependency declarations
2203
2204 # architecture extensions
2205
2206 armv5te_deps="arm"
2207 armv6_deps="arm"
2208 armv6t2_deps="arm"
2209 armv8_deps="aarch64"
2210 neon_deps_any="aarch64 arm"
2211 intrinsics_neon_deps="neon"
2212 vfp_deps_any="aarch64 arm"
2213 vfpv3_deps="vfp"
2214 setend_deps="arm"
2215
2216 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2217
2218 loongson2_deps="mips"
2219 loongson3_deps="mips"
2220 mipsfpu_deps="mips"
2221 mipsdsp_deps="mips"
2222 mipsdspr2_deps="mips"
2223 mips32r2_deps="mips"
2224 mips32r5_deps="mips"
2225 mips32r6_deps="mips"
2226 mips64r2_deps="mips"
2227 mips64r6_deps="mips"
2228 msa_deps="mipsfpu"
2229 mmi_deps="mips"
2230
2231 altivec_deps="ppc"
2232 dcbzl_deps="ppc"
2233 ldbrx_deps="ppc"
2234 ppc4xx_deps="ppc"
2235 vsx_deps="altivec"
2236 power8_deps="vsx"
2237
2238 cpunop_deps="i686"
2239 x86_64_select="i686"
2240 x86_64_suggest="fast_cmov"
2241
2242 amd3dnow_deps="mmx"
2243 amd3dnowext_deps="amd3dnow"
2244 i686_deps="x86"
2245 mmx_deps="x86"
2246 mmxext_deps="mmx"
2247 sse_deps="mmxext"
2248 sse2_deps="sse"
2249 sse3_deps="sse2"
2250 ssse3_deps="sse3"
2251 sse4_deps="ssse3"
2252 sse42_deps="sse4"
2253 aesni_deps="sse42"
2254 avx_deps="sse42"
2255 xop_deps="avx"
2256 fma3_deps="avx"
2257 fma4_deps="avx"
2258 avx2_deps="avx"
2259
2260 mmx_external_deps="yasm"
2261 mmx_inline_deps="inline_asm"
2262 mmx_suggest="mmx_external mmx_inline"
2263
2264 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2265     eval dep=\$${ext}_deps
2266     eval ${ext}_external_deps='"${dep}_external"'
2267     eval ${ext}_inline_deps='"${dep}_inline"'
2268     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2269 done
2270
2271 aligned_stack_if_any="aarch64 ppc x86"
2272 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2273 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2274 fast_unaligned_if_any="aarch64 ppc x86"
2275 simd_align_16_if_any="altivec neon sse"
2276
2277 # system capabilities
2278 symver_if_any="symver_asm_label symver_gnu_asm"
2279 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2280
2281 # threading support
2282 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2283 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2284 atomics_win32_if="MemoryBarrier"
2285 atomics_native_if_any="$ATOMICS_LIST"
2286 w32threads_deps="atomics_native"
2287 threads_if_any="$THREADS_LIST"
2288
2289 # subsystems
2290 dct_select="rdft"
2291 dirac_parse_select="golomb"
2292 error_resilience_select="me_cmp"
2293 faandct_deps="faan fdctdsp"
2294 faanidct_deps="faan idctdsp"
2295 h264dsp_select="startcode"
2296 frame_thread_encoder_deps="encoders threads"
2297 intrax8_select="blockdsp idctdsp"
2298 mdct_select="fft"
2299 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2300 mpeg_er_select="error_resilience"
2301 mpegaudio_select="mpegaudiodsp"
2302 mpegaudiodsp_select="dct"
2303 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2304 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2305 vc1dsp_select="h264chroma qpeldsp startcode"
2306 rdft_select="fft"
2307
2308 # decoders / encoders
2309 aac_decoder_select="imdct15 mdct sinewin"
2310 aac_fixed_decoder_select="mdct sinewin"
2311 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2312 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2313 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2314 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2315 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2316 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2317 adpcm_g722_decoder_select="g722dsp"
2318 adpcm_g722_encoder_select="g722dsp"
2319 aic_decoder_select="golomb idctdsp"
2320 alac_encoder_select="lpc"
2321 als_decoder_select="bswapdsp"
2322 amrnb_decoder_select="lsp"
2323 amrwb_decoder_select="lsp"
2324 amv_decoder_select="sp5x_decoder exif"
2325 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2326 ape_decoder_select="bswapdsp llauddsp"
2327 apng_decoder_select="zlib"
2328 apng_encoder_select="huffyuvencdsp zlib"
2329 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2330 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2331 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2332 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2333 atrac1_decoder_select="mdct sinewin"
2334 atrac3_decoder_select="mdct"
2335 atrac3p_decoder_select="mdct sinewin"
2336 avrn_decoder_select="exif jpegtables"
2337 bink_decoder_select="blockdsp hpeldsp"
2338 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2339 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2340 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2341 cllc_decoder_select="bswapdsp"
2342 comfortnoise_encoder_select="lpc"
2343 cook_decoder_select="audiodsp mdct sinewin"
2344 cscd_decoder_select="lzo"
2345 cscd_decoder_suggest="zlib"
2346 dca_decoder_select="mdct"
2347 dds_decoder_select="texturedsp"
2348 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2349 dnxhd_decoder_select="blockdsp idctdsp"
2350 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2351 dvvideo_decoder_select="dvprofile idctdsp"
2352 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2353 dxa_decoder_select="zlib"
2354 dxv_decoder_select="lzf texturedsp"
2355 eac3_decoder_select="ac3_decoder"
2356 eac3_encoder_select="ac3_encoder"
2357 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2358 eatgq_decoder_select="aandcttables"
2359 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2360 exr_decoder_select="zlib"
2361 ffv1_decoder_select="golomb rangecoder"
2362 ffv1_encoder_select="rangecoder"
2363 ffvhuff_decoder_select="huffyuv_decoder"
2364 ffvhuff_encoder_select="huffyuv_encoder"
2365 fic_decoder_select="golomb"
2366 flac_decoder_select="flacdsp golomb"
2367 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2368 flashsv2_decoder_select="zlib"
2369 flashsv2_encoder_select="zlib"
2370 flashsv_decoder_select="zlib"
2371 flashsv_encoder_select="zlib"
2372 flv_decoder_select="h263_decoder"
2373 flv_encoder_select="h263_encoder"
2374 fourxm_decoder_select="blockdsp bswapdsp"
2375 fraps_decoder_select="bswapdsp huffman"
2376 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2377 g729_decoder_select="audiodsp"
2378 h261_decoder_select="mpegvideo"
2379 h261_encoder_select="aandcttables mpegvideoenc"
2380 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2381 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2382 h263i_decoder_select="h263_decoder"
2383 h263p_decoder_select="h263_decoder"
2384 h263p_encoder_select="h263_encoder"
2385 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2386 h264_decoder_suggest="error_resilience"
2387 hap_decoder_select="snappy texturedsp"
2388 hap_encoder_deps="libsnappy"
2389 hap_encoder_select="texturedspenc"
2390 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2391 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2392 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2393 iac_decoder_select="imc_decoder"
2394 imc_decoder_select="bswapdsp fft mdct sinewin"
2395 indeo3_decoder_select="hpeldsp"
2396 indeo4_decoder_select="ividsp"
2397 indeo5_decoder_select="ividsp"
2398 interplay_video_decoder_select="hpeldsp"
2399 jpegls_decoder_select="golomb mjpeg_decoder"
2400 jpegls_encoder_select="golomb"
2401 jv_decoder_select="blockdsp"
2402 lagarith_decoder_select="huffyuvdsp"
2403 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2404 loco_decoder_select="golomb"
2405 magicyuv_decoder_select="huffyuvdsp"
2406 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2407 metasound_decoder_select="lsp mdct sinewin"
2408 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2409 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2410 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2411 mjpegb_decoder_select="mjpeg_decoder"
2412 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2413 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2414 mlp_decoder_select="mlp_parser"
2415 motionpixels_decoder_select="bswapdsp"
2416 mp1_decoder_select="mpegaudio"
2417 mp1float_decoder_select="mpegaudio"
2418 mp2_decoder_select="mpegaudio"
2419 mp2float_decoder_select="mpegaudio"
2420 mp3_decoder_select="mpegaudio"
2421 mp3adu_decoder_select="mpegaudio"
2422 mp3adufloat_decoder_select="mpegaudio"
2423 mp3float_decoder_select="mpegaudio"
2424 mp3on4_decoder_select="mpegaudio"
2425 mp3on4float_decoder_select="mpegaudio"
2426 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2427 mpc8_decoder_select="mpegaudiodsp"
2428 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2429 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2430 mpegvideo_decoder_select="mpegvideo"
2431 mpeg1video_decoder_select="mpegvideo"
2432 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2433 mpeg2video_decoder_select="mpegvideo"
2434 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2435 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2436 mpeg4_encoder_select="h263_encoder"
2437 msa1_decoder_select="mss34dsp"
2438 msmpeg4v1_decoder_select="h263_decoder"
2439 msmpeg4v2_decoder_select="h263_decoder"
2440 msmpeg4v2_encoder_select="h263_encoder"
2441 msmpeg4v3_decoder_select="h263_decoder"
2442 msmpeg4v3_encoder_select="h263_encoder"
2443 mss2_decoder_select="vc1_decoder mpegvideo"
2444 mts2_decoder_select="mss34dsp"
2445 mxpeg_decoder_select="mjpeg_decoder"
2446 nellymoser_decoder_select="mdct sinewin"
2447 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2448 nuv_decoder_select="idctdsp lzo"
2449 on2avc_decoder_select="mdct"
2450 opus_decoder_deps="swresample"
2451 opus_decoder_select="imdct15"
2452 png_decoder_select="zlib"
2453 png_encoder_select="huffyuvencdsp zlib"
2454 prores_decoder_select="blockdsp idctdsp"
2455 prores_encoder_select="fdctdsp"
2456 qcelp_decoder_select="lsp"
2457 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2458 ra_144_decoder_select="audiodsp"
2459 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2460 ralf_decoder_select="golomb"
2461 rawvideo_decoder_select="bswapdsp"
2462 rscc_decoder_select="zlib"
2463 rtjpeg_decoder_select="me_cmp"
2464 rv10_decoder_select="h263_decoder"
2465 rv10_encoder_select="h263_encoder"
2466 rv20_decoder_select="h263_decoder"
2467 rv20_encoder_select="h263_encoder"
2468 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2469 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2470 screenpresso_decoder_select="zlib"
2471 shorten_decoder_select="golomb"
2472 sipr_decoder_select="lsp"
2473 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2474 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2475 sonic_decoder_select="golomb rangecoder"
2476 sonic_encoder_select="golomb rangecoder"
2477 sonic_ls_encoder_select="golomb rangecoder"
2478 sp5x_decoder_select="mjpeg_decoder"
2479 svq1_decoder_select="hpeldsp"
2480 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2481 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2482 svq3_decoder_suggest="zlib"
2483 tak_decoder_select="audiodsp"
2484 tdsc_decoder_select="zlib mjpeg_decoder"
2485 theora_decoder_select="vp3_decoder"
2486 thp_decoder_select="mjpeg_decoder"
2487 tiff_decoder_suggest="zlib lzma"
2488 tiff_encoder_suggest="zlib"
2489 truehd_decoder_select="mlp_parser"
2490 truemotion2_decoder_select="bswapdsp"
2491 truespeech_decoder_select="bswapdsp"
2492 tscc_decoder_select="zlib"
2493 twinvq_decoder_select="mdct lsp sinewin"
2494 txd_decoder_select="texturedsp"
2495 utvideo_decoder_select="bswapdsp"
2496 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2497 vble_decoder_select="huffyuvdsp"
2498 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2499 vc1_qsv_decoder_deps="libmfx"
2500 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2501 vc1image_decoder_select="vc1_decoder"
2502 vorbis_decoder_select="mdct"
2503 vorbis_encoder_select="mdct"
2504 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2505 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2506 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2507 vp6a_decoder_select="vp6_decoder"
2508 vp6f_decoder_select="vp6_decoder"
2509 vp7_decoder_select="h264pred videodsp vp8dsp"
2510 vp8_decoder_select="h264pred videodsp vp8dsp"
2511 vp9_decoder_select="videodsp vp9_parser"
2512 webp_decoder_select="vp8_decoder exif"
2513 wmalossless_decoder_select="llauddsp"
2514 wmapro_decoder_select="mdct sinewin wma_freqs"
2515 wmav1_decoder_select="mdct sinewin wma_freqs"
2516 wmav1_encoder_select="mdct sinewin wma_freqs"
2517 wmav2_decoder_select="mdct sinewin wma_freqs"
2518 wmav2_encoder_select="mdct sinewin wma_freqs"
2519 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2520 wmv1_decoder_select="h263_decoder"
2521 wmv1_encoder_select="h263_encoder"
2522 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2523 wmv2_encoder_select="h263_encoder wmv2dsp"
2524 wmv3_decoder_select="vc1_decoder"
2525 wmv3image_decoder_select="wmv3_decoder"
2526 xma1_decoder_select="wmapro_decoder"
2527 xma2_decoder_select="wmapro_decoder"
2528 zerocodec_decoder_select="zlib"
2529 zlib_decoder_select="zlib"
2530 zlib_encoder_select="zlib"
2531 zmbv_decoder_select="zlib"
2532 zmbv_encoder_select="zlib"
2533
2534 # platform codecs
2535 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2536 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2537
2538 # hardware accelerators
2539 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2540 cuvid_deps="cuda"
2541 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2542 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2543 vaapi_deps="va_va_h"
2544 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2545 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2546 vda_deps="vda_framework pthreads"
2547 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2548 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2549 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2550 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2551 xvmc_deps="X11_extensions_XvMClib_h"
2552
2553 h263_vaapi_hwaccel_deps="vaapi"
2554 h263_vaapi_hwaccel_select="h263_decoder"
2555 h263_videotoolbox_hwaccel_deps="videotoolbox"
2556 h263_videotoolbox_hwaccel_select="h263_decoder"
2557 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2558 h264_cuvid_hwaccel_deps="cuda cuvid"
2559 h264_d3d11va_hwaccel_deps="d3d11va"
2560 h264_d3d11va_hwaccel_select="h264_decoder"
2561 h264_dxva2_hwaccel_deps="dxva2"
2562 h264_dxva2_hwaccel_select="h264_decoder"
2563 h264_mediacodec_decoder_deps="mediacodec"
2564 h264_mediacodec_hwaccel_deps="mediacodec"
2565 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2566 h264_mmal_decoder_deps="mmal"
2567 h264_mmal_decoder_select="mmal"
2568 h264_mmal_hwaccel_deps="mmal"
2569 h264_omx_encoder_deps="omx"
2570 h264_qsv_hwaccel_deps="libmfx"
2571 h264_vaapi_hwaccel_deps="vaapi"
2572 h264_vaapi_hwaccel_select="h264_decoder"
2573 h264_vda_decoder_deps="vda"
2574 h264_vda_decoder_select="h264_decoder"
2575 h264_vda_hwaccel_deps="vda"
2576 h264_vda_hwaccel_select="h264_decoder"
2577 h264_vda_old_hwaccel_deps="vda"
2578 h264_vda_old_hwaccel_select="h264_decoder"
2579 h264_vdpau_decoder_deps="vdpau"
2580 h264_vdpau_decoder_select="h264_decoder"
2581 h264_vdpau_hwaccel_deps="vdpau"
2582 h264_vdpau_hwaccel_select="h264_decoder"
2583 h264_videotoolbox_hwaccel_deps="videotoolbox"
2584 h264_videotoolbox_hwaccel_select="h264_decoder"
2585 hevc_cuvid_hwaccel_deps="cuda cuvid"
2586 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2587 hevc_d3d11va_hwaccel_select="hevc_decoder"
2588 hevc_mediacodec_decoder_deps="mediacodec"
2589 hevc_mediacodec_hwaccel_deps="mediacodec"
2590 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2591 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2592 hevc_dxva2_hwaccel_select="hevc_decoder"
2593 hevc_qsv_hwaccel_deps="libmfx"
2594 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2595 hevc_vaapi_hwaccel_select="hevc_decoder"
2596 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2597 hevc_vdpau_hwaccel_select="hevc_decoder"
2598 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2599 mpeg_vdpau_decoder_deps="vdpau"
2600 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2601 mpeg_xvmc_hwaccel_deps="xvmc"
2602 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2603 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2604 mpeg1_vdpau_decoder_deps="vdpau"
2605 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2606 mpeg1_vdpau_hwaccel_deps="vdpau"
2607 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2608 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2609 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2610 mpeg1_xvmc_hwaccel_deps="xvmc"
2611 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2612 mpeg2_crystalhd_decoder_select="crystalhd"
2613 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2614 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2615 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2616 mpeg2_dxva2_hwaccel_deps="dxva2"
2617 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2618 mpeg2_mmal_decoder_deps="mmal"
2619 mpeg2_mmal_decoder_select="mmal"
2620 mpeg2_mmal_hwaccel_deps="mmal"
2621 mpeg2_qsv_hwaccel_deps="libmfx"
2622 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2623 mpeg2_vaapi_hwaccel_deps="vaapi"
2624 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2625 mpeg2_vdpau_hwaccel_deps="vdpau"
2626 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2627 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2628 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2629 mpeg2_xvmc_hwaccel_deps="xvmc"
2630 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2631 mpeg4_crystalhd_decoder_select="crystalhd"
2632 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2633 mpeg4_mediacodec_decoder_deps="mediacodec"
2634 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2635 mpeg4_mmal_decoder_deps="mmal"
2636 mpeg4_mmal_decoder_select="mmal"
2637 mpeg4_mmal_hwaccel_deps="mmal"
2638 mpeg4_omx_encoder_deps="omx"
2639 mpeg4_vaapi_hwaccel_deps="vaapi"
2640 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2641 mpeg4_vdpau_decoder_deps="vdpau"
2642 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2643 mpeg4_vdpau_hwaccel_deps="vdpau"
2644 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2645 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2646 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2647 msmpeg4_crystalhd_decoder_select="crystalhd"
2648 vc1_crystalhd_decoder_select="crystalhd"
2649 vc1_cuvid_hwaccel_deps="cuda cuvid"
2650 vc1_d3d11va_hwaccel_deps="d3d11va"
2651 vc1_d3d11va_hwaccel_select="vc1_decoder"
2652 vc1_dxva2_hwaccel_deps="dxva2"
2653 vc1_dxva2_hwaccel_select="vc1_decoder"
2654 vc1_mmal_decoder_deps="mmal"
2655 vc1_mmal_decoder_select="mmal"
2656 vc1_mmal_hwaccel_deps="mmal"
2657 vc1_qsv_hwaccel_deps="libmfx"
2658 vc1_qsv_hwaccel_select="qsvdec_vc1"
2659 vc1_vaapi_hwaccel_deps="vaapi"
2660 vc1_vaapi_hwaccel_select="vc1_decoder"
2661 vc1_vdpau_decoder_deps="vdpau"
2662 vc1_vdpau_decoder_select="vc1_decoder"
2663 vc1_vdpau_hwaccel_deps="vdpau"
2664 vc1_vdpau_hwaccel_select="vc1_decoder"
2665 vp8_cuvid_hwaccel_deps="cuda cuvid"
2666 vp9_cuvid_hwaccel_deps="cuda cuvid"
2667 vp8_mediacodec_decoder_deps="mediacodec"
2668 vp8_mediacodec_hwaccel_deps="mediacodec"
2669 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2670 vp9_d3d11va_hwaccel_select="vp9_decoder"
2671 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2672 vp9_dxva2_hwaccel_select="vp9_decoder"
2673 vp9_mediacodec_decoder_deps="mediacodec"
2674 vp9_mediacodec_hwaccel_deps="mediacodec"
2675 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2676 vp9_vaapi_hwaccel_select="vp9_decoder"
2677 wmv3_crystalhd_decoder_select="crystalhd"
2678 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2679 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2680 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2681 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2682 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2683
2684 # hardware-accelerated codecs
2685 omx_deps="dlopen pthreads"
2686 omx_extralibs='$ldl'
2687 qsvdec_select="qsv"
2688 qsvenc_select="qsv"
2689 vaapi_encode_deps="vaapi"
2690
2691 hwupload_cuda_filter_deps="cuda"
2692 scale_npp_filter_deps="cuda libnpp"
2693
2694 nvenc_deps_any="dlopen LoadLibrary"
2695 nvenc_encoder_deps="nvenc"
2696 h264_cuvid_decoder_deps="cuda cuvid"
2697 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2698 h264_nvenc_encoder_deps="nvenc"
2699 h264_qsv_decoder_deps="libmfx"
2700 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2701 h264_qsv_encoder_deps="libmfx"
2702 h264_qsv_encoder_select="qsvenc"
2703 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2704 h264_vaapi_encoder_select="vaapi_encode golomb"
2705
2706 hevc_cuvid_decoder_deps="cuda cuvid"
2707 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2708 hevc_nvenc_encoder_deps="nvenc"
2709 hevc_qsv_decoder_deps="libmfx"
2710 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2711 hevc_qsv_encoder_deps="libmfx"
2712 hevc_qsv_encoder_select="qsvenc"
2713 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2714 hevc_vaapi_encoder_select="vaapi_encode golomb"
2715 mjpeg_cuvid_decoder_deps="cuda cuvid"
2716 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2717 mpeg1_cuvid_decoder_deps="cuda cuvid"
2718 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2719 mpeg2_cuvid_decoder_deps="cuda cuvid"
2720 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2721 mpeg2_qsv_decoder_deps="libmfx"
2722 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2723 mpeg2_qsv_encoder_deps="libmfx"
2724 mpeg2_qsv_encoder_select="qsvenc"
2725 mpeg4_cuvid_decoder_deps="cuda cuvid"
2726 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2727 nvenc_h264_encoder_deps="nvenc"
2728 nvenc_hevc_encoder_deps="nvenc"
2729
2730 vc1_cuvid_decoder_deps="cuda cuvid"
2731 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2732 vp8_cuvid_decoder_deps="cuda cuvid"
2733 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2734 vp9_cuvid_decoder_deps="cuda cuvid"
2735 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2736
2737 # parsers
2738 h264_parser_select="golomb h264dsp h264parse"
2739 hevc_parser_select="golomb"
2740 mpegvideo_parser_select="mpegvideo"
2741 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2742 vc1_parser_select="vc1dsp"
2743
2744 # bitstream_filters
2745 mjpeg2jpeg_bsf_select="jpegtables"
2746
2747 # external libraries
2748 aac_at_decoder_deps="audiotoolbox"
2749 ac3_at_decoder_deps="audiotoolbox"
2750 ac3_at_decoder_select="ac3_parser"
2751 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2752 alac_at_decoder_deps="audiotoolbox"
2753 amr_nb_at_decoder_deps="audiotoolbox"
2754 avisynth_deps_any="dlopen LoadLibrary"
2755 avisynth_demuxer_deps="avisynth"
2756 avisynth_demuxer_select="riffdec"
2757 eac3_at_decoder_deps="audiotoolbox"
2758 eac3_at_decoder_select="ac3_parser"
2759 gsm_ms_at_decoder_deps="audiotoolbox"
2760 ilbc_at_decoder_deps="audiotoolbox"
2761 mp1_at_decoder_deps="audiotoolbox"
2762 mp2_at_decoder_deps="audiotoolbox"
2763 mp3_at_decoder_deps="audiotoolbox"
2764 pcm_alaw_at_decoder_deps="audiotoolbox"
2765 pcm_mulaw_at_decoder_deps="audiotoolbox"
2766 qdmc_at_decoder_deps="audiotoolbox"
2767 qdm2_at_decoder_deps="audiotoolbox"
2768 aac_at_encoder_deps="audiotoolbox"
2769 aac_at_encoder_select="audio_frame_queue"
2770 alac_at_encoder_deps="audiotoolbox"
2771 alac_at_encoder_select="audio_frame_queue"
2772 ilbc_at_encoder_deps="audiotoolbox"
2773 ilbc_at_encoder_select="audio_frame_queue"
2774 pcm_alaw_at_encoder_deps="audiotoolbox"
2775 pcm_alaw_at_encoder_select="audio_frame_queue"
2776 pcm_mulaw_at_encoder_deps="audiotoolbox"
2777 pcm_mulaw_at_encoder_select="audio_frame_queue"
2778 chromaprint_muxer_deps="chromaprint"
2779 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2780 libcelt_decoder_deps="libcelt"
2781 libfdk_aac_decoder_deps="libfdk_aac"
2782 libfdk_aac_encoder_deps="libfdk_aac"
2783 libfdk_aac_encoder_select="audio_frame_queue"
2784 libgme_demuxer_deps="libgme"
2785 libgsm_decoder_deps="libgsm"
2786 libgsm_encoder_deps="libgsm"
2787 libgsm_ms_decoder_deps="libgsm"
2788 libgsm_ms_encoder_deps="libgsm"
2789 libilbc_decoder_deps="libilbc"
2790 libilbc_encoder_deps="libilbc"
2791 libkvazaar_encoder_deps="libkvazaar"
2792 libmodplug_demuxer_deps="libmodplug"
2793 libmp3lame_encoder_deps="libmp3lame"
2794 libmp3lame_encoder_select="audio_frame_queue"
2795 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2796 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2797 libopencore_amrnb_encoder_select="audio_frame_queue"
2798 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2799 libopenh264_decoder_deps="libopenh264"
2800 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2801 libopenh264_encoder_deps="libopenh264"
2802 libopenjpeg_decoder_deps="libopenjpeg"
2803 libopenjpeg_encoder_deps="libopenjpeg"
2804 libopenmpt_demuxer_deps="libopenmpt"
2805 libopus_decoder_deps="libopus"
2806 libopus_encoder_deps="libopus"
2807 libopus_encoder_select="audio_frame_queue"
2808 libschroedinger_decoder_deps="libschroedinger"
2809 libschroedinger_encoder_deps="libschroedinger"
2810 libshine_encoder_deps="libshine"
2811 libshine_encoder_select="audio_frame_queue"
2812 libspeex_decoder_deps="libspeex"
2813 libspeex_encoder_deps="libspeex"
2814 libspeex_encoder_select="audio_frame_queue"
2815 libtheora_encoder_deps="libtheora"
2816 libtwolame_encoder_deps="libtwolame"
2817 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2818 libvorbis_decoder_deps="libvorbis"
2819 libvorbis_encoder_deps="libvorbis"
2820 libvorbis_encoder_select="audio_frame_queue"
2821 libvpx_vp8_decoder_deps="libvpx"
2822 libvpx_vp8_encoder_deps="libvpx"
2823 libvpx_vp9_decoder_deps="libvpx"
2824 libvpx_vp9_encoder_deps="libvpx"
2825 libwavpack_encoder_deps="libwavpack"
2826 libwebp_encoder_deps="libwebp"
2827 libwebp_anim_encoder_deps="libwebp"
2828 libx262_encoder_deps="libx262"
2829 libx264_encoder_deps="libx264"
2830 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2831 libx264rgb_encoder_select="libx264_encoder"
2832 libx265_encoder_deps="libx265"
2833 libxavs_encoder_deps="libxavs"
2834 libxvid_encoder_deps="libxvid"
2835 libzvbi_teletext_decoder_deps="libzvbi"
2836 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2837 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2838 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2839 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2840 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2841
2842 # demuxers / muxers
2843 ac3_demuxer_select="ac3_parser"
2844 asf_demuxer_select="riffdec"
2845 asf_o_demuxer_select="riffdec"
2846 asf_muxer_select="riffenc"
2847 asf_stream_muxer_select="asf_muxer"
2848 avi_demuxer_select="iso_media riffdec exif"
2849 avi_muxer_select="riffenc"
2850 caf_demuxer_select="iso_media riffdec"
2851 dash_muxer_select="mp4_muxer"
2852 dirac_demuxer_select="dirac_parser"
2853 dts_demuxer_select="dca_parser"
2854 dtshd_demuxer_select="dca_parser"
2855 dv_demuxer_select="dvprofile"
2856 dv_muxer_select="dvprofile"
2857 dxa_demuxer_select="riffdec"
2858 eac3_demuxer_select="ac3_parser"
2859 f4v_muxer_select="mov_muxer"
2860 fifo_muxer_deps="threads"
2861 flac_demuxer_select="flac_parser"
2862 hds_muxer_select="flv_muxer"
2863 hls_muxer_select="mpegts_muxer"
2864 image2_alias_pix_demuxer_select="image2_demuxer"
2865 image2_brender_pix_demuxer_select="image2_demuxer"
2866 ipod_muxer_select="mov_muxer"
2867 ismv_muxer_select="mov_muxer"
2868 libnut_demuxer_deps="libnut"
2869 libnut_muxer_deps="libnut"
2870 matroska_audio_muxer_select="matroska_muxer"
2871 matroska_demuxer_select="iso_media riffdec"
2872 matroska_demuxer_suggest="bzlib lzo zlib"
2873 matroska_muxer_select="iso_media riffenc"
2874 mmf_muxer_select="riffenc"
2875 mov_demuxer_select="iso_media riffdec"
2876 mov_demuxer_suggest="zlib"
2877 mov_muxer_select="iso_media riffenc rtpenc_chain"
2878 mp3_demuxer_select="mpegaudio_parser"
2879 mp4_muxer_select="mov_muxer"
2880 mpegts_demuxer_select="iso_media"
2881 mpegts_muxer_select="adts_muxer latm_muxer"
2882 mpegtsraw_demuxer_select="mpegts_demuxer"
2883 mxf_d10_muxer_select="mxf_muxer"
2884 mxf_opatom_muxer_select="mxf_muxer"
2885 nut_muxer_select="riffenc"
2886 nuv_demuxer_select="riffdec"
2887 oga_muxer_select="ogg_muxer"
2888 ogg_demuxer_select="dirac_parse"
2889 ogv_muxer_select="ogg_muxer"
2890 opus_muxer_select="ogg_muxer"
2891 psp_muxer_select="mov_muxer"
2892 rtp_demuxer_select="sdp_demuxer"
2893 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2894 rtsp_demuxer_select="http_protocol rtpdec"
2895 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2896 sap_demuxer_select="sdp_demuxer"
2897 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2898 sdp_demuxer_select="rtpdec"
2899 smoothstreaming_muxer_select="ismv_muxer"
2900 spdif_muxer_select="aac_parser"
2901 spx_muxer_select="ogg_muxer"
2902 swf_demuxer_suggest="zlib"
2903 tak_demuxer_select="tak_parser"
2904 tg2_muxer_select="mov_muxer"
2905 tgp_muxer_select="mov_muxer"
2906 vobsub_demuxer_select="mpegps_demuxer"
2907 w64_demuxer_select="wav_demuxer"
2908 w64_muxer_select="wav_muxer"
2909 wav_demuxer_select="riffdec"
2910 wav_muxer_select="riffenc"
2911 webm_muxer_select="iso_media riffenc"
2912 webm_dash_manifest_demuxer_select="matroska_demuxer"
2913 wtv_demuxer_select="mpegts_demuxer riffdec"
2914 wtv_muxer_select="mpegts_muxer riffenc"
2915 xmv_demuxer_select="riffdec"
2916 xwma_demuxer_select="riffdec"
2917
2918 # indevs / outdevs
2919 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2920 alsa_outdev_deps="alsa_asoundlib_h"
2921 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2922 avfoundation_indev_select="avfoundation"
2923 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2924 caca_outdev_deps="libcaca"
2925 decklink_indev_deps="decklink pthreads"
2926 decklink_indev_extralibs="-lstdc++"
2927 decklink_outdev_deps="decklink pthreads"
2928 decklink_outdev_extralibs="-lstdc++"
2929 dshow_indev_deps="IBaseFilter"
2930 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2931 dv1394_indev_deps="dv1394"
2932 dv1394_indev_select="dv_demuxer"
2933 fbdev_indev_deps="linux_fb_h"
2934 fbdev_outdev_deps="linux_fb_h"
2935 gdigrab_indev_deps="CreateDIBSection"
2936 gdigrab_indev_extralibs="-lgdi32"
2937 gdigrab_indev_select="bmp_decoder"
2938 iec61883_indev_deps="libiec61883"
2939 jack_indev_deps="jack_jack_h"
2940 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2941 lavfi_indev_deps="avfilter"
2942 libcdio_indev_deps="libcdio"
2943 libdc1394_indev_deps="libdc1394"
2944 libv4l2_indev_deps="libv4l2"
2945 openal_indev_deps="openal"
2946 opengl_outdev_deps="opengl"
2947 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2948 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2949 pulse_indev_deps="libpulse"
2950 pulse_outdev_deps="libpulse"
2951 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2952 qtkit_indev_select="qtkit"
2953 sdl2_outdev_deps="sdl2"
2954 sndio_indev_deps="sndio_h"
2955 sndio_outdev_deps="sndio_h"
2956 v4l_indev_deps="linux_videodev_h"
2957 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2958 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2959 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2960 vfwcap_indev_extralibs="-lavicap32"
2961 x11grab_indev_deps="x11grab"
2962 x11grab_xcb_indev_deps="libxcb"
2963 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2964 xv_outdev_extralibs="-lXv -lX11 -lXext"
2965
2966 # protocols
2967 async_protocol_deps="threads"
2968 bluray_protocol_deps="libbluray"
2969 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2970 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2971 ffrtmpcrypt_protocol_select="tcp_protocol"
2972 ffrtmphttp_protocol_deps="!librtmp_protocol"
2973 ffrtmphttp_protocol_select="http_protocol"
2974 ftp_protocol_select="tcp_protocol"
2975 gopher_protocol_select="network"
2976 http_protocol_select="tcp_protocol"
2977 httpproxy_protocol_select="tcp_protocol"
2978 https_protocol_select="tls_protocol"
2979 icecast_protocol_select="http_protocol"
2980 librtmp_protocol_deps="librtmp"
2981 librtmpe_protocol_deps="librtmp"
2982 librtmps_protocol_deps="librtmp"
2983 librtmpt_protocol_deps="librtmp"
2984 librtmpte_protocol_deps="librtmp"
2985 libsmbclient_protocol_deps="libsmbclient gplv3"
2986 libssh_protocol_deps="libssh"
2987 mmsh_protocol_select="http_protocol"
2988 mmst_protocol_select="network"
2989 rtmp_protocol_deps="!librtmp_protocol"
2990 rtmp_protocol_select="tcp_protocol"
2991 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2992 rtmps_protocol_deps="!librtmp_protocol"
2993 rtmps_protocol_select="tls_protocol"
2994 rtmpt_protocol_select="ffrtmphttp_protocol"
2995 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2996 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2997 rtp_protocol_select="udp_protocol"
2998 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2999 sctp_protocol_select="network"
3000 srtp_protocol_select="rtp_protocol srtp"
3001 tcp_protocol_select="network"
3002 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3003 tls_gnutls_protocol_select="tcp_protocol"
3004 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3005 tls_openssl_protocol_select="tcp_protocol"
3006 tls_schannel_protocol_deps="schannel"
3007 tls_schannel_protocol_select="tcp_protocol"
3008 tls_securetransport_protocol_deps="securetransport"
3009 tls_securetransport_protocol_select="tcp_protocol"
3010 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3011 udp_protocol_select="network"
3012 udplite_protocol_select="network"
3013 unix_protocol_deps="sys_un_h"
3014 unix_protocol_select="network"
3015
3016 # filters
3017 afftfilt_filter_deps="avcodec"
3018 afftfilt_filter_select="fft"
3019 amovie_filter_deps="avcodec avformat"
3020 aresample_filter_deps="swresample"
3021 ass_filter_deps="libass"
3022 asyncts_filter_deps="avresample"
3023 atempo_filter_deps="avcodec"
3024 atempo_filter_select="rdft"
3025 azmq_filter_deps="libzmq"
3026 blackframe_filter_deps="gpl"
3027 boxblur_filter_deps="gpl"
3028 bs2b_filter_deps="libbs2b"
3029 colormatrix_filter_deps="gpl"
3030 cover_rect_filter_deps="avcodec avformat gpl"
3031 cropdetect_filter_deps="gpl"
3032 delogo_filter_deps="gpl"
3033 deshake_filter_select="pixelutils"
3034 drawtext_filter_deps="libfreetype"
3035 ebur128_filter_deps="gpl"
3036 eq_filter_deps="gpl"
3037 fftfilt_filter_deps="avcodec"
3038 fftfilt_filter_select="rdft"
3039 find_rect_filter_deps="avcodec avformat gpl"
3040 firequalizer_filter_deps="avcodec"
3041 firequalizer_filter_select="rdft"
3042 flite_filter_deps="libflite"
3043 framerate_filter_select="pixelutils"
3044 frei0r_filter_deps="frei0r dlopen"
3045 frei0r_src_filter_deps="frei0r dlopen"
3046 fspp_filter_deps="gpl"
3047 geq_filter_deps="gpl"
3048 histeq_filter_deps="gpl"
3049 hqdn3d_filter_deps="gpl"
3050 interlace_filter_deps="gpl"
3051 kerndeint_filter_deps="gpl"
3052 ladspa_filter_deps="ladspa dlopen"
3053 mcdeint_filter_deps="avcodec gpl"
3054 movie_filter_deps="avcodec avformat"
3055 mpdecimate_filter_deps="gpl"
3056 mpdecimate_filter_select="pixelutils"
3057 mptestsrc_filter_deps="gpl"
3058 negate_filter_deps="lut_filter"
3059 nnedi_filter_deps="gpl"
3060 ocr_filter_deps="libtesseract"
3061 ocv_filter_deps="libopencv"
3062 owdenoise_filter_deps="gpl"
3063 pan_filter_deps="swresample"
3064 perspective_filter_deps="gpl"
3065 phase_filter_deps="gpl"
3066 pp7_filter_deps="gpl"
3067 pp_filter_deps="gpl postproc"
3068 pullup_filter_deps="gpl"
3069 removelogo_filter_deps="avcodec avformat swscale"
3070 repeatfields_filter_deps="gpl"
3071 resample_filter_deps="avresample"
3072 rubberband_filter_deps="librubberband"
3073 sab_filter_deps="gpl swscale"
3074 scale2ref_filter_deps="swscale"
3075 scale_filter_deps="swscale"
3076 select_filter_select="pixelutils"
3077 showcqt_filter_deps="avcodec avformat swscale"
3078 showcqt_filter_select="fft"
3079 showfreqs_filter_deps="avcodec"
3080 showfreqs_filter_select="fft"
3081 showspectrum_filter_deps="avcodec"
3082 showspectrum_filter_select="fft"
3083 showspectrumpic_filter_deps="avcodec"
3084 showspectrumpic_filter_select="fft"
3085 smartblur_filter_deps="gpl swscale"
3086 sofalizer_filter_deps="netcdf avcodec"
3087 sofalizer_filter_select="fft"
3088 spectrumsynth_filter_deps="avcodec"
3089 spectrumsynth_filter_select="fft"
3090 spp_filter_deps="gpl avcodec"
3091 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3092 stereo3d_filter_deps="gpl"
3093 subtitles_filter_deps="avformat avcodec libass"
3094 super2xsai_filter_deps="gpl"
3095 pixfmts_super2xsai_test_deps="super2xsai_filter"
3096 tinterlace_filter_deps="gpl"
3097 tinterlace_merge_test_deps="tinterlace_filter"
3098 tinterlace_pad_test_deps="tinterlace_filter"
3099 uspp_filter_deps="gpl avcodec"
3100 vaguedenoiser_filter_deps="gpl"
3101 vidstabdetect_filter_deps="libvidstab"
3102 vidstabtransform_filter_deps="libvidstab"
3103 zmq_filter_deps="libzmq"
3104 zoompan_filter_deps="swscale"
3105 zscale_filter_deps="libzimg"
3106 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3107
3108 # examples
3109 avio_dir_cmd_deps="avformat avutil"
3110 avio_reading_deps="avformat avcodec avutil"
3111 decoding_encoding_example_deps="avcodec avformat avutil"
3112 demuxing_decoding_example_deps="avcodec avformat avutil"
3113 extract_mvs_example_deps="avcodec avformat avutil"
3114 filter_audio_example_deps="avfilter avutil"
3115 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3116 filtering_video_example_deps="avfilter avcodec avformat avutil"
3117 http_multiclient_example_deps="avformat avutil fork"
3118 metadata_example_deps="avformat avutil"
3119 muxing_example_deps="avcodec avformat avutil swscale"
3120 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3121 remuxing_example_deps="avcodec avformat avutil"
3122 resampling_audio_example_deps="avutil swresample"
3123 scaling_video_example_deps="avutil swscale"
3124 transcode_aac_example_deps="avcodec avformat swresample"
3125 transcoding_example_deps="avfilter avcodec avformat avutil"
3126
3127 # libraries, in linking order
3128 avcodec_deps="avutil"
3129 avdevice_deps="avformat avcodec avutil"
3130 avfilter_deps="avutil"
3131 avformat_deps="avcodec avutil"
3132 avresample_deps="avutil"
3133 postproc_deps="avutil gpl"
3134 swresample_deps="avutil"
3135 swscale_deps="avutil"
3136
3137 # programs
3138 ffmpeg_deps="avcodec avfilter avformat swresample"
3139 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3140                null_filter
3141                setpts_filter trim_filter"
3142 ffplay_deps="avcodec avformat swscale swresample sdl2"
3143 ffplay_libs='$sdl2_libs'
3144 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3145 ffprobe_deps="avcodec avformat"
3146 ffserver_deps="avformat fork sarestart"
3147 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3148
3149 # documentation
3150 podpages_deps="perl"
3151 manpages_deps="perl pod2man"
3152 htmlpages_deps="perl"
3153 htmlpages_deps_any="makeinfo_html texi2html"
3154 txtpages_deps="perl makeinfo"
3155 doc_deps_any="manpages htmlpages podpages txtpages"
3156
3157 # default parameters
3158
3159 logfile="config.log"
3160
3161 # installation paths
3162 prefix_default="/usr/local"
3163 bindir_default='${prefix}/bin'
3164 datadir_default='${prefix}/share/ffmpeg'
3165 docdir_default='${prefix}/share/doc/ffmpeg'
3166 incdir_default='${prefix}/include'
3167 libdir_default='${prefix}/lib'
3168 mandir_default='${prefix}/share/man'
3169
3170 # toolchain
3171 ar_default="ar"
3172 cc_default="gcc"
3173 cxx_default="g++"
3174 host_cc_default="gcc"
3175 cp_f="cp -f"
3176 doxygen_default="doxygen"
3177 install="install"
3178 ln_s_default="ln -s -f"
3179 nm_default="nm -g"
3180 objformat="elf"
3181 pkg_config_default=pkg-config
3182 ranlib_default="ranlib"
3183 strip_default="strip"
3184 version_script='--version-script'
3185 yasmexe_default="yasm"
3186 windres_default="windres"
3187
3188 # OS
3189 target_os_default=$(tolower $(uname -s))
3190 host_os=$target_os_default
3191
3192 # machine
3193 if test "$target_os_default" = aix; then
3194     arch_default=$(uname -p)
3195     strip_default="strip -X32_64"
3196 else
3197     arch_default=$(uname -m)
3198 fi
3199 cpu="generic"
3200 intrinsics="none"
3201
3202 # configurable options
3203 enable $PROGRAM_LIST
3204 enable $DOCUMENT_LIST
3205 enable $EXAMPLE_LIST
3206 enable $(filter_out avresample $LIBRARY_LIST)
3207 enable stripping
3208
3209 enable asm
3210 enable debug
3211 enable doc
3212 enable faan faandct faanidct
3213 enable optimizations
3214 enable runtime_cpudetect
3215 enable safe_bitstream_reader
3216 enable static
3217 enable swscale_alpha
3218 enable valgrind_backtrace
3219
3220 sws_max_filter_size_default=256
3221 set_default sws_max_filter_size
3222
3223 # Enable platform codecs by default.
3224 enable audiotoolbox
3225
3226 # Enable hwaccels by default.
3227 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3228 enable xlib
3229
3230 enable nvenc vda_framework videotoolbox videotoolbox_encoder
3231
3232 # build settings
3233 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3234 LIBPREF="lib"
3235 LIBSUF=".a"
3236 FULLNAME='$(NAME)$(BUILDSUF)'
3237 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3238 SLIBPREF="lib"
3239 SLIBSUF=".so"
3240 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3241 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3242 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3243 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3244 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3245 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3246 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3247
3248 asflags_filter=echo
3249 cflags_filter=echo
3250 ldflags_filter=echo
3251
3252 AS_C='-c'
3253 AS_O='-o $@'
3254 CC_C='-c'
3255 CC_E='-E -o $@'
3256 CC_O='-o $@'
3257 CXX_C='-c'
3258 CXX_O='-o $@'
3259 OBJCC_C='-c'
3260 OBJCC_E='-E -o $@'
3261 OBJCC_O='-o $@'
3262 LD_O='-o $@'
3263 LD_LIB='-l%'
3264 LD_PATH='-L'
3265 HOSTCC_C='-c'
3266 HOSTCC_E='-E -o $@'
3267 HOSTCC_O='-o $@'
3268 HOSTLD_O='-o $@'
3269
3270 host_libs='-lm'
3271 host_cflags_filter=echo
3272 host_ldflags_filter=echo
3273
3274 target_path='$(CURDIR)'
3275
3276 # since the object filename is not given with the -MM flag, the compiler
3277 # is only able to print the basename, and we must add the path ourselves
3278 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3279 DEPFLAGS='-MM'
3280
3281 # find source path
3282 if test -f configure; then
3283     source_path=.
3284 else
3285     source_path=$(cd $(dirname "$0"); pwd)
3286     case "$source_path" in
3287         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3288     esac
3289     test -e "$source_path/config.h" &&
3290         die "Out of tree builds are impossible with config.h in source dir."
3291 fi
3292
3293 for v in "$@"; do
3294     r=${v#*=}
3295     l=${v%"$r"}
3296     r=$(sh_quote "$r")
3297     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3298 done
3299
3300 find_things(){
3301     thing=$1
3302     pattern=$2
3303     file=$source_path/$3
3304     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3305 }
3306
3307 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3308 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3309 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3310 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3311 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3312 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3313 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3314 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3315 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3316
3317 find_things_extern(){
3318     thing=$1
3319     pattern=$2
3320     file=$source_path/$3
3321     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3322 }
3323
3324 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3325 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3326
3327 ALL_COMPONENTS="
3328     $BSF_LIST
3329     $DECODER_LIST
3330     $DEMUXER_LIST
3331     $ENCODER_LIST
3332     $FILTER_LIST
3333     $HWACCEL_LIST
3334     $INDEV_LIST
3335     $MUXER_LIST
3336     $OUTDEV_LIST
3337     $PARSER_LIST
3338     $PROTOCOL_LIST
3339 "
3340
3341 for n in $COMPONENT_LIST; do
3342     v=$(toupper ${n%s})_LIST
3343     eval enable \$$v
3344     eval ${n}_if_any="\$$v"
3345 done
3346
3347 enable $ARCH_EXT_LIST
3348
3349 die_unknown(){
3350     echo "Unknown option \"$1\"."
3351     echo "See $0 --help for available options."
3352     exit 1
3353 }
3354
3355 print_in_columns() {
3356     cols=$(expr $ncols / 24)
3357     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3358 }
3359
3360 show_list() {
3361     suffix=_$1
3362     shift
3363     echo $* | sed s/$suffix//g | print_in_columns
3364     exit 0
3365 }
3366
3367 rand_list(){
3368     IFS=', '
3369     set -- $*
3370     unset IFS
3371     for thing; do
3372         comp=${thing%:*}
3373         prob=${thing#$comp}
3374         prob=${prob#:}
3375         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3376         echo "prob ${prob:-0.5}"
3377         printf '%s\n' $comp
3378     done
3379 }
3380
3381 do_random(){
3382     action=$1
3383     shift
3384     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3385     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3386 }
3387
3388 for opt do
3389     optval="${opt#*=}"
3390     case "$opt" in
3391         --extra-ldflags=*)
3392             add_ldflags $optval
3393         ;;
3394         --extra-ldexeflags=*)
3395             add_ldexeflags $optval
3396         ;;
3397         --extra-ldlibflags=*)
3398             add_ldlibflags $optval
3399         ;;
3400         --extra-libs=*)
3401             add_extralibs $optval
3402         ;;
3403         --disable-devices)
3404             disable $INDEV_LIST $OUTDEV_LIST
3405         ;;
3406         --enable-debug=*)
3407             debuglevel="$optval"
3408         ;;
3409         --disable-programs)
3410             disable $PROGRAM_LIST
3411         ;;
3412         --disable-everything)
3413             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3414         ;;
3415         --disable-all)
3416             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3417             disable $LIBRARY_LIST $PROGRAM_LIST doc
3418             enable avutil
3419         ;;
3420         --enable-random|--disable-random)
3421             action=${opt%%-random}
3422             do_random ${action#--} $COMPONENT_LIST
3423         ;;
3424         --enable-random=*|--disable-random=*)
3425             action=${opt%%-random=*}
3426             do_random ${action#--} $optval
3427         ;;
3428         --enable-*=*|--disable-*=*)
3429             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3430             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3431             eval list=\$$(toupper $thing)_LIST
3432             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3433             list=$(filter "$name" $list)
3434             [ "$list" = "" ] && warn "Option $opt did not match anything"
3435             $action $list
3436         ;;
3437         --enable-?*|--disable-?*)
3438             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3439             if is_in $option $COMPONENT_LIST; then
3440                 test $action = disable && action=unset
3441                 eval $action \$$(toupper ${option%s})_LIST
3442             elif is_in $option $CMDLINE_SELECT; then
3443                 $action $option
3444             else
3445                 die_unknown $opt
3446             fi
3447         ;;
3448         --list-*)
3449             NAME="${opt#--list-}"
3450             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3451             NAME=${NAME%s}
3452             eval show_list $NAME \$$(toupper $NAME)_LIST
3453         ;;
3454         --help|-h) show_help
3455         ;;
3456         --fatal-warnings) enable fatal_warnings
3457         ;;
3458         *)
3459             optname="${opt%%=*}"
3460             optname="${optname#--}"
3461             optname=$(echo "$optname" | sed 's/-/_/g')
3462             if is_in $optname $CMDLINE_SET; then
3463                 eval $optname='$optval'
3464             elif is_in $optname $CMDLINE_APPEND; then
3465                 append $optname "$optval"
3466             else
3467                 die_unknown $opt
3468             fi
3469         ;;
3470     esac
3471 done
3472
3473 for e in $env; do
3474     eval "export $e"
3475 done
3476
3477 disabled logging && logfile=/dev/null
3478
3479 # Disable all the library-specific components if the library itself
3480 # is disabled, see AVCODEC_LIST and following _LIST variables.
3481
3482 disable_components(){
3483     disabled ${1} && disable $(
3484         eval components="\$$(toupper ${1})_COMPONENTS"
3485         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3486     )
3487 }
3488
3489 map 'disable_components $v' $LIBRARY_LIST
3490
3491 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3492 set >> $logfile
3493
3494 test -n "$valgrind" && toolchain="valgrind-memcheck"
3495
3496 case "$toolchain" in
3497     *-asan)
3498         cc_default="${toolchain%-asan}"
3499         add_cflags  -fsanitize=address
3500         add_ldflags -fsanitize=address
3501     ;;
3502     *-msan)
3503         cc_default="${toolchain%-msan}"
3504         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3505         add_ldflags -fsanitize=memory
3506     ;;
3507     *-tsan)
3508         cc_default="${toolchain%-tsan}"
3509         add_cflags  -fsanitize=thread -pie
3510         add_ldflags -fsanitize=thread -pie
3511         case "$toolchain" in
3512             gcc-tsan)
3513                 add_cflags  -fPIC
3514                 add_ldflags -fPIC
3515                 ;;
3516         esac
3517     ;;
3518     *-usan)
3519         cc_default="${toolchain%-usan}"
3520         add_cflags  -fsanitize=undefined
3521         add_ldflags -fsanitize=undefined
3522     ;;
3523     valgrind-*)
3524         target_exec_default="valgrind"
3525         case "$toolchain" in
3526             valgrind-massif)
3527                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3528                 ;;
3529             valgrind-memcheck)
3530                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3531                 ;;
3532         esac
3533     ;;
3534     msvc)
3535         # Check whether the current MSVC version needs the C99 converter.
3536         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3537         # support enough of C99 to build ffmpeg. Default to the new
3538         # behaviour if the regexp was unable to match anything, since this
3539         # successfully parses the version number of existing supported
3540         # versions that require the converter (MSVC 2010 and 2012).
3541         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3542         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3543             cc_default="cl"
3544         else
3545             cc_default="c99wrap cl"
3546         fi
3547         ld_default="$source_path/compat/windows/mslink"
3548         nm_default="dumpbin -symbols"
3549         ar_default="lib"
3550         case "$arch" in
3551         arm*)
3552             as_default="armasm"
3553             ;;
3554         esac
3555         target_os_default="win32"
3556         # Use a relative path for TMPDIR. This makes sure all the
3557         # ffconf temp files are written with a relative path, avoiding
3558         # issues with msys/win32 path conversion for MSVC parameters
3559         # such as -Fo<file> or -out:<file>.
3560         TMPDIR=.
3561     ;;
3562     icl)
3563         cc_default="icl"
3564         ld_default="xilink"
3565         nm_default="dumpbin -symbols"
3566         ar_default="xilib"
3567         target_os_default="win32"
3568         TMPDIR=.
3569     ;;
3570     gcov)
3571         add_cflags  -fprofile-arcs -ftest-coverage
3572         add_ldflags -fprofile-arcs -ftest-coverage
3573     ;;
3574     llvm-cov)
3575         add_cflags -fprofile-arcs -ftest-coverage
3576         add_ldflags --coverage
3577     ;;
3578     hardened)
3579         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3580         add_cflags   -fno-strict-overflow -fstack-protector-all
3581         add_ldflags  -Wl,-z,relro -Wl,-z,now
3582         add_cflags   -fPIE
3583         add_ldexeflags -fPIE -pie
3584     ;;
3585     ?*)
3586         die "Unknown toolchain $toolchain"
3587     ;;
3588 esac
3589
3590 test -n "$cross_prefix" && enable cross_compile
3591
3592 if enabled cross_compile; then
3593     test -n "$arch" && test -n "$target_os" ||
3594         die "Must specify target arch and OS when cross-compiling"
3595 fi
3596
3597 ar_default="${cross_prefix}${ar_default}"
3598 cc_default="${cross_prefix}${cc_default}"
3599 cxx_default="${cross_prefix}${cxx_default}"
3600 nm_default="${cross_prefix}${nm_default}"
3601 pkg_config_default="${cross_prefix}${pkg_config_default}"
3602 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3603     ranlib_default="${cross_prefix}${ranlib_default} -D"
3604 else
3605     ranlib_default="${cross_prefix}${ranlib_default}"
3606 fi
3607 strip_default="${cross_prefix}${strip_default}"
3608 windres_default="${cross_prefix}${windres_default}"
3609
3610 sysinclude_default="${sysroot}/usr/include"
3611
3612 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3613     target_exec target_os yasmexe
3614 enabled cross_compile || host_cc_default=$cc
3615 set_default host_cc
3616
3617 pkg_config_fail_message=""
3618 if ! $pkg_config --version >/dev/null 2>&1; then
3619     warn "$pkg_config not found, library detection may fail."
3620     pkg_config=false
3621 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3622     pkg_config_fail_message="
3623 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3624 fi
3625
3626 if test $doxygen != $doxygen_default && \
3627   ! $doxygen --version >/dev/null 2>&1; then
3628     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3629 fi
3630
3631 exesuf() {
3632     case $1 in
3633         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3634     esac
3635 }
3636
3637 EXESUF=$(exesuf $target_os)
3638 HOSTEXESUF=$(exesuf $host_os)
3639
3640 # set temporary file name
3641 : ${TMPDIR:=$TEMPDIR}
3642 : ${TMPDIR:=$TMP}
3643 : ${TMPDIR:=/tmp}
3644
3645 if [ -n "$tempprefix" ] ; then
3646     mktemp(){
3647         echo $tempprefix.${HOSTNAME}.${UID}
3648     }
3649 elif ! check_cmd mktemp -u XXXXXX; then
3650     # simple replacement for missing mktemp
3651     # NOT SAFE FOR GENERAL USE
3652     mktemp(){
3653         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3654     }
3655 fi
3656
3657 tmpfile(){
3658     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3659         (set -C; exec > $tmp) 2>/dev/null ||
3660         die "Unable to create temporary file in $TMPDIR."
3661     append TMPFILES $tmp
3662     eval $1=$tmp
3663 }
3664
3665 trap 'rm -f -- $TMPFILES' EXIT
3666
3667 tmpfile TMPASM .asm
3668 tmpfile TMPC   .c
3669 tmpfile TMPCPP .cpp
3670 tmpfile TMPE   $EXESUF
3671 tmpfile TMPH   .h
3672 tmpfile TMPM   .m
3673 tmpfile TMPO   .o
3674 tmpfile TMPS   .S
3675 tmpfile TMPSH  .sh
3676 tmpfile TMPV   .ver
3677
3678 unset -f mktemp
3679
3680 chmod +x $TMPE
3681
3682 # make sure we can execute files in $TMPDIR
3683 cat > $TMPSH 2>> $logfile <<EOF
3684 #! /bin/sh
3685 EOF
3686 chmod +x $TMPSH >> $logfile 2>&1
3687 if ! $TMPSH >> $logfile 2>&1; then
3688     cat <<EOF
3689 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3690 variable to another directory and make sure that it is not mounted noexec.
3691 EOF
3692     die "Sanity test failed."
3693 fi
3694
3695 armasm_flags(){
3696     for flag; do
3697         case $flag in
3698             # Filter out MSVC cl.exe options from cflags that shouldn't
3699             # be passed to gas-preprocessor
3700             -M[TD]*)                                            ;;
3701             *)                  echo $flag                      ;;
3702         esac
3703    done
3704 }
3705
3706 ccc_flags(){
3707     for flag; do
3708         case $flag in
3709             -std=c99)           echo -c99                       ;;
3710             -mcpu=*)            echo -arch ${flag#*=}           ;;
3711             -mieee)             echo -ieee                      ;;
3712             -O*|-fast)          echo $flag                      ;;
3713             -fno-math-errno)    echo -assume nomath_errno       ;;
3714             -g)                 echo -g3                        ;;
3715             -Wall)              echo -msg_enable level2         ;;
3716             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3717             -Wl,*)              echo $flag                      ;;
3718             -f*|-W*)                                            ;;
3719             *)                  echo $flag                      ;;
3720         esac
3721    done
3722 }
3723
3724 cparser_flags(){
3725     for flag; do
3726         case $flag in
3727             -Wno-switch)             echo -Wno-switch-enum ;;
3728             -Wno-format-zero-length) ;;
3729             -Wdisabled-optimization) ;;
3730             -Wno-pointer-sign)       echo -Wno-other ;;
3731             *)                       echo $flag ;;
3732         esac
3733     done
3734 }
3735
3736 msvc_common_flags(){
3737     for flag; do
3738         case $flag in
3739             # In addition to specifying certain flags under the compiler
3740             # specific filters, they must be specified here as well or else the
3741             # generic catch all at the bottom will print the original flag.
3742             -Wall)                ;;
3743             -std=c99)             ;;
3744             # Common flags
3745             -fomit-frame-pointer) ;;
3746             -g)                   echo -Z7 ;;
3747             -fno-math-errno)      ;;
3748             -fno-common)          ;;
3749             -fno-signed-zeros)    ;;
3750             -fPIC)                ;;
3751             -mthumb)              ;;
3752             -march=*)             ;;
3753             -lz)                  echo zlib.lib ;;
3754             -lavifil32)           echo vfw32.lib ;;
3755             -lavicap32)           echo vfw32.lib user32.lib ;;
3756             -lx264)               echo libx264.lib ;;
3757             -l*)                  echo ${flag#-l}.lib ;;
3758             -LARGEADDRESSAWARE)   echo $flag ;;
3759             -L*)                  echo -libpath:${flag#-L} ;;
3760             *)                    echo $flag ;;
3761         esac
3762     done
3763 }
3764
3765 msvc_flags(){
3766     msvc_common_flags "$@"
3767     for flag; do
3768         case $flag in
3769             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3770                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3771                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3772                                        -wd4307 \
3773                                        -wd4273 -wd4554 -wd4701 ;;
3774         esac
3775     done
3776 }
3777
3778 icl_flags(){
3779     msvc_common_flags "$@"
3780     for flag; do
3781         case $flag in
3782             # Despite what Intel's documentation says -Wall, which is supported
3783             # on Windows, does enable remarks so disable them here.
3784             -Wall)                echo $flag -Qdiag-disable:remark ;;
3785             -std=c99)             echo -Qstd=c99 ;;
3786             -flto)                echo -ipo ;;
3787         esac
3788     done
3789 }
3790
3791 icc_flags(){
3792     for flag; do
3793         case $flag in
3794             -flto)                echo -ipo ;;
3795             *)                    echo $flag ;;
3796         esac
3797     done
3798 }
3799
3800 pgi_flags(){
3801     for flag; do
3802         case $flag in
3803             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3804             -fomit-frame-pointer) echo -Mnoframe ;;
3805             -g)                   echo -gopt ;;
3806             *)                    echo $flag ;;
3807         esac
3808     done
3809 }
3810
3811 suncc_flags(){
3812     for flag; do
3813         case $flag in
3814             -march=*|-mcpu=*)
3815                 case "${flag#*=}" in
3816                     native)                   echo -xtarget=native       ;;
3817                     v9|niagara)               echo -xarch=sparc          ;;
3818                     ultrasparc)               echo -xarch=sparcvis       ;;
3819                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3820                     i586|pentium)             echo -xchip=pentium        ;;
3821                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3822                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3823                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3824                     pentium4*)          echo -xtarget=pentium4           ;;
3825                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3826                     *-sse3)             echo -xarch=sse3                 ;;
3827                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3828                     bonnell)                   echo -xarch=ssse3         ;;
3829                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3830                     westmere)                  echo -xtarget=westmere    ;;
3831                     silvermont)                echo -xarch=sse4_2        ;;
3832                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3833                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3834                                                echo -xarch=avx           ;;
3835                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3836                     btver1)                    echo -xarch=amdsse4a      ;;
3837                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3838                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3839                     k8|opteron|athlon64|athlon-fx)
3840                                                echo -xarch=sse2a         ;;
3841                     athlon*)                   echo -xarch=pentium_proa  ;;
3842                 esac
3843                 ;;
3844             -std=c99)             echo -xc99              ;;
3845             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3846             -fPIC)                echo -KPIC -xcode=pic32 ;;
3847             -W*,*)                echo $flag              ;;
3848             -f*-*|-W*|-mimpure-text)                      ;;
3849             -shared)              echo -G                 ;;
3850             *)                    echo $flag              ;;
3851         esac
3852     done
3853 }
3854
3855 tms470_flags(){
3856     for flag; do
3857         case $flag in
3858             -march=*|-mcpu=*)
3859                 case "${flag#*=}" in
3860                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3861                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3862                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3863                     armv6*|arm11*)          echo -mv=6   ;;
3864                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3865                                             echo -mv=5e  ;;
3866                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3867                 esac
3868                 ;;
3869             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3870             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3871             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3872             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3873             -msoft-float)   echo --float_support=vfplib       ;;
3874             -O[0-3]|-mf=*)  echo $flag                        ;;
3875             -g)             echo -g -mn                       ;;
3876             -pds=*)         echo $flag                        ;;
3877             -D*|-I*)        echo $flag                        ;;
3878             --gcc|--abi=*)  echo $flag                        ;;
3879             -me)            echo $flag                        ;;
3880         esac
3881     done
3882 }
3883
3884 probe_cc(){
3885     pfx=$1
3886     _cc=$2
3887     first=$3
3888
3889     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3890     unset _ld_o _ldflags _ld_lib _ld_path
3891     unset _depflags _DEPCMD _DEPFLAGS
3892     _flags_filter=echo
3893
3894     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3895         true # no-op to avoid reading stdin in following checks
3896     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3897         _type=llvm_gcc
3898         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3899         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3900         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3901         _cflags_speed='-O3'
3902         _cflags_size='-Os'
3903     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3904         _type=gcc
3905         gcc_version=$($_cc --version | head -n1)
3906         gcc_basever=$($_cc -dumpversion)
3907         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3908         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3909         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3910         case $gcc_basever in
3911             2) ;;
3912             2.*) ;;
3913             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3914         esac
3915         if [ "$first" = true ]; then
3916             case $gcc_basever in
3917                 4.2*)
3918                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3919             esac
3920         fi
3921         _cflags_speed='-O3'
3922         _cflags_size='-Os'
3923     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3924         _type=icc
3925         _ident=$($_cc --version | head -n1)
3926         _depflags='-MMD'
3927         _cflags_speed='-O3'
3928         _cflags_size='-Os'
3929         _cflags_noopt='-O1'
3930         _flags_filter=icc_flags
3931     elif $_cc -v 2>&1 | grep -q xlc; then
3932         _type=xlc
3933         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3934         _cflags_speed='-O5'
3935         _cflags_size='-O5 -qcompact'
3936     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3937         _type=ccc
3938         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3939         _DEPFLAGS='-M'
3940         _cflags_speed='-fast'
3941         _cflags_size='-O1'
3942         _flags_filter=ccc_flags
3943     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3944         test -d "$sysroot" || die "No valid sysroot specified."
3945         _type=armcc
3946         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3947         armcc_conf="$PWD/armcc.conf"
3948         $_cc --arm_linux_configure                 \
3949              --arm_linux_config_file="$armcc_conf" \
3950              --configure_sysroot="$sysroot"        \
3951              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3952              die "Error creating armcc configuration file."
3953         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3954         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3955         as_default="${cross_prefix}gcc"
3956         _depflags='-MMD'
3957         _cflags_speed='-O3'
3958         _cflags_size='-Os'
3959     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3960         _type=tms470
3961         _ident=$($_cc -version | head -n1 | tr -s ' ')
3962         _flags='--gcc --abi=eabi -me'
3963         _cc_e='-ppl -fe=$@'
3964         _cc_o='-fe=$@'
3965         _depflags='-ppa -ppd=$(@:.o=.d)'
3966         _cflags_speed='-O3 -mf=5'
3967         _cflags_size='-O3 -mf=2'
3968         _flags_filter=tms470_flags
3969     elif $_cc -v 2>&1 | grep -q clang; then
3970         _type=clang
3971         _ident=$($_cc --version 2>/dev/null | head -n1)
3972         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3973         _cflags_speed='-O3'
3974         _cflags_size='-Os'
3975     elif $_cc -V 2>&1 | grep -q Sun; then
3976         _type=suncc
3977         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3978         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3979         _DEPFLAGS='-xM1 -xc99'
3980         _ldflags='-std=c99'
3981         _cflags_speed='-O5'
3982         _cflags_size='-O5 -xspace'
3983         _flags_filter=suncc_flags
3984     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3985         _type=pathscale
3986         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3987         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3988         _cflags_speed='-O2'
3989         _cflags_size='-Os'
3990         _flags_filter='filter_out -Wdisabled-optimization'
3991     elif $_cc -v 2>&1 | grep -q Open64; then
3992         _type=open64
3993         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3994         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3995         _cflags_speed='-O2'
3996         _cflags_size='-Os'
3997         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3998     elif $_cc -V 2>&1 | grep -q Portland; then
3999         _type=pgi
4000         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4001         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4002         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4003         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4004         _cflags_noopt="-O"
4005         _flags_filter=pgi_flags
4006     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4007         _type=armasm
4008         _ident=$($_cc | head -n1)
4009         # 4509: "This form of conditional instruction is deprecated"
4010         _flags="-nologo -ignore 4509"
4011         _flags_filter=armasm_flags
4012     elif $_cc 2>&1 | grep -q Intel; then
4013         _type=icl
4014         _ident=$($_cc 2>&1 | head -n1)
4015         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4016         # Not only is O3 broken on 13.x+ but it is slower on all previous
4017         # versions (tested) as well.
4018         _cflags_speed="-O2"
4019         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4020         if $_cc 2>&1 | grep -q Linker; then
4021             _ld_o='-out:$@'
4022         else
4023             _ld_o='-Fe$@'
4024         fi
4025         _cc_o='-Fo$@'
4026         _cc_e='-P'
4027         _flags_filter=icl_flags
4028         _ld_lib='lib%.a'
4029         _ld_path='-libpath:'
4030         # -Qdiag-error to make icl error when seeing certain unknown arguments
4031         _flags='-nologo -Qdiag-error:4044,10157'
4032         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4033         # with MSVC which enables it by default.
4034         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4035         disable stripping
4036     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4037         _type=msvc
4038         _ident=$($_cc 2>&1 | head -n1)
4039         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4040         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4041         _cflags_speed="-O2"
4042         _cflags_size="-O1"
4043         if $_cc -nologo- 2>&1 | grep -q Linker; then
4044             _ld_o='-out:$@'
4045         else
4046             _ld_o='-Fe$@'
4047         fi
4048         _cc_o='-Fo$@'
4049         _cc_e='-P -Fi$@'
4050         _flags_filter=msvc_flags
4051         _ld_lib='lib%.a'
4052         _ld_path='-libpath:'
4053         _flags='-nologo'
4054         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4055         disable stripping
4056     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4057         _type=cparser
4058         _ident=$($_cc --version | head -n1)
4059         _depflags='-MMD'
4060         _cflags_speed='-O4'
4061         _cflags_size='-O2'
4062         _flags_filter=cparser_flags
4063     fi
4064
4065     eval ${pfx}_type=\$_type
4066     eval ${pfx}_ident=\$_ident
4067 }
4068
4069 set_ccvars(){
4070     eval ${1}_C=\${_cc_c-\${${1}_C}}
4071     eval ${1}_E=\${_cc_e-\${${1}_E}}
4072     eval ${1}_O=\${_cc_o-\${${1}_O}}
4073
4074     if [ -n "$_depflags" ]; then
4075         eval ${1}_DEPFLAGS=\$_depflags
4076     else
4077         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4078         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4079         eval DEP${1}FLAGS=\$_flags
4080     fi
4081 }
4082
4083 probe_cc cc "$cc" "true"
4084 cflags_filter=$_flags_filter
4085 cflags_speed=$_cflags_speed
4086 cflags_size=$_cflags_size
4087 cflags_noopt=$_cflags_noopt
4088 add_cflags $_flags $_cflags
4089 cc_ldflags=$_ldflags
4090 set_ccvars CC
4091
4092 probe_cc hostcc "$host_cc"
4093 host_cflags_filter=$_flags_filter
4094 add_host_cflags  $_flags $_cflags
4095 set_ccvars HOSTCC
4096
4097 test -n "$cc_type" && enable $cc_type ||
4098     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4099
4100 : ${as_default:=$cc}
4101 : ${objcc_default:=$cc}
4102 : ${dep_cc_default:=$cc}
4103 : ${ld_default:=$cc}
4104 : ${host_ld_default:=$host_cc}
4105 set_default ar as objcc dep_cc ld ln_s host_ld windres
4106
4107 probe_cc as "$as"
4108 asflags_filter=$_flags_filter
4109 add_asflags $_flags $_cflags
4110 set_ccvars AS
4111
4112 probe_cc objcc "$objcc"
4113 objcflags_filter=$_flags_filter
4114 add_objcflags $_flags $_cflags
4115 set_ccvars OBJC
4116
4117 probe_cc ld "$ld"
4118 ldflags_filter=$_flags_filter
4119 add_ldflags $_flags $_ldflags
4120 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4121 LD_O=${_ld_o-$LD_O}
4122 LD_LIB=${_ld_lib-$LD_LIB}
4123 LD_PATH=${_ld_path-$LD_PATH}
4124
4125 probe_cc hostld "$host_ld"
4126 host_ldflags_filter=$_flags_filter
4127 add_host_ldflags $_flags $_ldflags
4128 HOSTLD_O=${_ld_o-$HOSTLD_O}
4129
4130 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4131     probe_cc depcc "$dep_cc"
4132     CCDEP=${_DEPCMD:-$DEPCMD}
4133     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4134     DEPCCFLAGS=$_flags
4135 fi
4136
4137 if $ar 2>&1 | grep -q Microsoft; then
4138     arflags="-nologo"
4139     ar_o='-out:$@'
4140 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4141     arflags="rq"
4142     ar_o='$@'
4143 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4144     arflags='-Xany -r -c'
4145     ar_o='$@'
4146 elif $ar 2>&1 | grep -q "\[D\] "; then
4147     arflags="rcD"
4148     ar_o='$@'
4149 else
4150     arflags="rc"
4151     ar_o='$@'
4152 fi
4153
4154 add_cflags $extra_cflags
4155 add_cxxflags $extra_cxxflags
4156 add_objcflags $extra_objcflags
4157 add_asflags $extra_cflags
4158
4159 if test -n "$sysroot"; then
4160     case "$cc_type" in
4161         gcc|llvm_gcc|clang)
4162             add_cppflags --sysroot="$sysroot"
4163             add_ldflags --sysroot="$sysroot"
4164 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4165             add_cppflags -isysroot "$sysroot"
4166             add_ldflags -isysroot "$sysroot"
4167         ;;
4168         tms470)
4169             add_cppflags -I"$sysinclude"
4170             add_ldflags  --sysroot="$sysroot"
4171         ;;
4172     esac
4173 fi
4174
4175 if test "$cpu" = host; then
4176     enabled cross_compile &&
4177         die "--cpu=host makes no sense when cross-compiling."
4178
4179     case "$cc_type" in
4180         gcc|llvm_gcc)
4181             check_native(){
4182                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4183                 sed -n "/cc1.*$1=/{
4184                             s/.*$1=\\([^ ]*\\).*/\\1/
4185                             p
4186                             q
4187                         }" $TMPE
4188             }
4189             cpu=$(check_native -march || check_native -mcpu)
4190         ;;
4191         clang)
4192             check_native(){
4193                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4194                 sed -n "/cc1.*-target-cpu /{
4195                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4196                             p
4197                             q
4198                         }" $TMPE
4199             }
4200             cpu=$(check_native -march)
4201         ;;
4202     esac
4203
4204     test "${cpu:-host}" = host &&
4205         die "--cpu=host not supported with compiler $cc"
4206 fi
4207
4208 # Deal with common $arch aliases
4209 case "$arch" in
4210     aarch64|arm64)
4211         arch="aarch64"
4212     ;;
4213     arm*|iPad*|iPhone*)
4214         arch="arm"
4215     ;;
4216     mips*|IP*)
4217         case "$arch" in
4218         *el)
4219             add_cppflags -EL
4220             add_ldflags -EL
4221         ;;
4222         *eb)
4223             add_cppflags -EB
4224             add_ldflags -EB
4225         ;;
4226         esac
4227         arch="mips"
4228     ;;
4229     parisc*|hppa*)
4230         arch="parisc"
4231     ;;
4232     "Power Macintosh"|ppc*|powerpc*)
4233         arch="ppc"
4234     ;;
4235     s390|s390x)
4236         arch="s390"
4237     ;;
4238     sh4|sh)
4239         arch="sh4"
4240     ;;
4241     sun4*|sparc*)
4242         arch="sparc"
4243     ;;
4244     tilegx|tile-gx)
4245         arch="tilegx"
4246     ;;
4247     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4248         arch="x86"
4249     ;;
4250 esac
4251
4252 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4253 enable $arch
4254
4255 # Add processor-specific flags
4256 if enabled aarch64; then
4257
4258     case $cpu in
4259         armv*)
4260             cpuflags="-march=$cpu"
4261         ;;
4262         *)
4263             cpuflags="-mcpu=$cpu"
4264         ;;
4265     esac
4266
4267 elif enabled alpha; then
4268
4269     cpuflags="-mcpu=$cpu"
4270
4271 elif enabled arm; then
4272
4273     check_arm_arch() {
4274         check_cpp_condition stddef.h \
4275             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4276             $cpuflags
4277     }
4278
4279     probe_arm_arch() {
4280         if   check_arm_arch 4;        then echo armv4
4281         elif check_arm_arch 4T;       then echo armv4t
4282         elif check_arm_arch 5;        then echo armv5
4283         elif check_arm_arch 5E;       then echo armv5e
4284         elif check_arm_arch 5T;       then echo armv5t
4285         elif check_arm_arch 5TE;      then echo armv5te
4286         elif check_arm_arch 5TEJ;     then echo armv5te
4287         elif check_arm_arch 6;        then echo armv6
4288         elif check_arm_arch 6J;       then echo armv6j
4289         elif check_arm_arch 6K;       then echo armv6k
4290         elif check_arm_arch 6Z;       then echo armv6z
4291         elif check_arm_arch 6ZK;      then echo armv6zk
4292         elif check_arm_arch 6T2;      then echo armv6t2
4293         elif check_arm_arch 7;        then echo armv7
4294         elif check_arm_arch 7A  7_A;  then echo armv7-a
4295         elif check_arm_arch 7S;       then echo armv7-a
4296         elif check_arm_arch 7R  7_R;  then echo armv7-r
4297         elif check_arm_arch 7M  7_M;  then echo armv7-m
4298         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4299         elif check_arm_arch 8A  8_A;  then echo armv8-a
4300         fi
4301     }
4302
4303     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4304
4305     case $cpu in
4306         armv*)
4307             cpuflags="-march=$cpu"
4308             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4309         ;;
4310         *)
4311             cpuflags="-mcpu=$cpu"
4312             case $cpu in
4313                 cortex-a*)                               subarch=armv7a  ;;
4314                 cortex-r*)                               subarch=armv7r  ;;
4315                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4316                 arm11*)                                  subarch=armv6   ;;
4317                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4318                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4319                 *)                             subarch=$(probe_arm_arch) ;;
4320             esac
4321         ;;
4322     esac
4323
4324     case "$subarch" in
4325         armv5t*)    enable fast_clz                ;;
4326         armv[6-8]*)
4327             enable fast_clz
4328             disabled fast_unaligned || enable fast_unaligned
4329             ;;
4330     esac
4331
4332 elif enabled avr32; then
4333
4334     case $cpu in
4335         ap7[02]0[0-2])
4336             subarch="avr32_ap"
4337             cpuflags="-mpart=$cpu"
4338         ;;
4339         ap)
4340             subarch="avr32_ap"
4341             cpuflags="-march=$cpu"
4342         ;;
4343         uc3[ab]*)
4344             subarch="avr32_uc"
4345             cpuflags="-mcpu=$cpu"
4346         ;;
4347         uc)
4348             subarch="avr32_uc"
4349             cpuflags="-march=$cpu"
4350         ;;
4351     esac
4352
4353 elif enabled bfin; then
4354
4355     cpuflags="-mcpu=$cpu"
4356
4357 elif enabled mips; then
4358
4359     cpuflags="-march=$cpu"
4360
4361     if [ "$cpu" != "generic" ]; then
4362         disable mips32r2
4363         disable mips32r5
4364         disable mips64r2
4365         disable mips32r6
4366         disable mips64r6
4367         disable loongson2
4368         disable loongson3
4369
4370         case $cpu in
4371             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4372                 enable mips32r2
4373                 disable msa
4374             ;;
4375             p5600|i6400|p6600)
4376                 disable mipsdsp
4377                 disable mipsdspr2
4378             ;;
4379             loongson*)
4380                 enable loongson2
4381                 enable loongson3
4382                 enable local_aligned_8 local_aligned_16 local_aligned_32
4383                 enable simd_align_16
4384                 enable fast_64bit
4385                 enable fast_clz
4386                 enable fast_cmov
4387                 enable fast_unaligned
4388                 disable aligned_stack
4389                 disable mipsfpu
4390                 disable mipsdsp
4391                 disable mipsdspr2
4392                 case $cpu in
4393                     loongson3*)
4394                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4395                     ;;
4396                     loongson2e)
4397                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4398                     ;;
4399                     loongson2f)
4400                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4401                     ;;
4402                 esac
4403             ;;
4404             *)
4405                 # Unknown CPU. Disable everything.
4406                 warn "unknown CPU. Disabling all MIPS optimizations."
4407                 disable mipsfpu
4408                 disable mipsdsp
4409                 disable mipsdspr2
4410                 disable msa
4411                 disable mmi
4412             ;;
4413         esac
4414
4415         case $cpu in
4416             24kc)
4417                 disable mipsfpu
4418                 disable mipsdsp
4419                 disable mipsdspr2
4420             ;;
4421             24kf*)
4422                 disable mipsdsp
4423                 disable mipsdspr2
4424             ;;
4425             24kec|34kc|1004kc)
4426                 disable mipsfpu
4427                 disable mipsdspr2
4428             ;;
4429             24kef*|34kf*|1004kf*)
4430                 disable mipsdspr2
4431             ;;
4432             74kc)
4433                 disable mipsfpu
4434             ;;
4435             p5600)
4436                 enable mips32r5
4437                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4438             ;;
4439             i6400)
4440                 enable mips64r6
4441                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4442             ;;
4443             p6600)
4444                 enable mips64r6
4445                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4446             ;;
4447         esac
4448     else
4449         # We do not disable anything. Is up to the user to disable the unwanted features.
4450         warn 'generic cpu selected'
4451     fi
4452
4453 elif enabled ppc; then
4454
4455     disable ldbrx
4456
4457     case $(tolower $cpu) in
4458         601|ppc601|powerpc601)
4459             cpuflags="-mcpu=601"
4460             disable altivec
4461         ;;
4462         603*|ppc603*|powerpc603*)
4463             cpuflags="-mcpu=603"
4464             disable altivec
4465         ;;
4466         604*|ppc604*|powerpc604*)
4467             cpuflags="-mcpu=604"
4468             disable altivec
4469         ;;
4470         g3|75*|ppc75*|powerpc75*)
4471             cpuflags="-mcpu=750"
4472             disable altivec
4473         ;;
4474         g4|745*|ppc745*|powerpc745*)
4475             cpuflags="-mcpu=7450"
4476             disable vsx
4477         ;;
4478         74*|ppc74*|powerpc74*)
4479             cpuflags="-mcpu=7400"
4480             disable vsx
4481         ;;
4482         g5|970|ppc970|powerpc970)
4483             cpuflags="-mcpu=970"
4484             disable vsx
4485         ;;
4486         power[3-6]*)
4487             cpuflags="-mcpu=$cpu"
4488             disable vsx
4489         ;;
4490         power[7-8]*)
4491             cpuflags="-mcpu=$cpu"
4492         ;;
4493         cell)
4494             cpuflags="-mcpu=cell"
4495             enable ldbrx
4496             disable vsx
4497         ;;
4498         e500mc)
4499             cpuflags="-mcpu=e500mc"
4500             disable altivec
4501         ;;
4502         e500v2)
4503             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4504             disable altivec
4505             disable dcbzl
4506         ;;
4507         e500)
4508             cpuflags="-mcpu=8540 -mhard-float"
4509             disable altivec
4510             disable dcbzl
4511         ;;
4512     esac
4513
4514 elif enabled sparc; then
4515
4516     case $cpu in
4517         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4518             cpuflags="-mcpu=$cpu"
4519         ;;
4520         ultrasparc*|niagara[234])
4521             cpuflags="-mcpu=$cpu"
4522         ;;
4523     esac
4524
4525 elif enabled x86; then
4526
4527     case $cpu in
4528         i[345]86|pentium)
4529             cpuflags="-march=$cpu"
4530             disable i686
4531             disable mmx
4532         ;;
4533         # targets that do NOT support nopl and conditional mov (cmov)
4534         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4535             cpuflags="-march=$cpu"
4536             disable i686
4537         ;;
4538         # targets that do support nopl and conditional mov (cmov)
4539         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4540         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4541         |amdfam10|barcelona|b[dt]ver*|znver*)
4542             cpuflags="-march=$cpu"
4543             enable i686
4544             enable fast_cmov
4545         ;;
4546         # targets that do support conditional mov but on which it's slow
4547         pentium4|pentium4m|prescott|nocona)
4548             cpuflags="-march=$cpu"
4549             enable i686
4550             disable fast_cmov
4551         ;;
4552     esac
4553
4554 fi
4555
4556 if [ "$cpu" != generic ]; then
4557     add_cflags  $cpuflags
4558     add_asflags $cpuflags
4559     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4560 fi
4561
4562 # compiler sanity check
4563 check_exec <<EOF
4564 int main(void){ return 0; }
4565 EOF
4566 if test "$?" != 0; then
4567     echo "$cc is unable to create an executable file."
4568     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4569         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4570         echo "Only do this if you know what cross compiling means."
4571     fi
4572     die "C compiler test failed."
4573 fi
4574
4575 add_cppflags -D_ISOC99_SOURCE
4576 add_cxxflags -D__STDC_CONSTANT_MACROS
4577 add_cxxflags -std=c++98
4578 check_cflags -std=c99
4579 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4580 #include <stdlib.h>
4581 EOF
4582 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4583 #include <stdlib.h>
4584 EOF
4585
4586 add_host_cppflags -D_ISOC99_SOURCE
4587 check_host_cflags -std=c99
4588 check_host_cflags -Wall
4589 check_host_cflags -O3
4590
4591 check_64bit(){
4592     arch32=$1
4593     arch64=$2
4594     expr=$3
4595     check_code cc "" "int test[2*($expr) - 1]" &&
4596         subarch=$arch64 || subarch=$arch32
4597 }
4598
4599 case "$arch" in
4600     aarch64|alpha|ia64)
4601         spic=$shared
4602     ;;
4603     mips)
4604         check_64bit mips mips64 '_MIPS_SIM > 1'
4605         spic=$shared
4606     ;;
4607     parisc)
4608         check_64bit parisc parisc64 'sizeof(void *) > 4'
4609         spic=$shared
4610     ;;
4611     ppc)
4612         check_64bit ppc ppc64 'sizeof(void *) > 4'
4613         spic=$shared
4614     ;;
4615     s390)
4616         check_64bit s390 s390x 'sizeof(void *) > 4'
4617         spic=$shared
4618     ;;
4619     sparc)
4620         check_64bit sparc sparc64 'sizeof(void *) > 4'
4621         spic=$shared
4622     ;;
4623     x86)
4624         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4625         # Treat x32 as x64 for now. Note it also needs spic=$shared
4626         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4627             subarch=x86_64
4628         if test "$subarch" = "x86_64"; then
4629             spic=$shared
4630         fi
4631     ;;
4632     ppc)
4633         check_cc <<EOF && subarch="ppc64"
4634         int test[(int)sizeof(char*) - 7];
4635 EOF
4636     ;;
4637 esac
4638
4639 enable $subarch
4640 enabled spic && enable_weak pic
4641
4642 # OS specific
4643 case $target_os in
4644     aix)
4645         SHFLAGS=-shared
4646         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4647         enabled shared && add_ldflags -Wl,-brtl
4648         ;;
4649     android)
4650         disable symver
4651         enable section_data_rel_ro
4652         SLIB_INSTALL_NAME='$(SLIBNAME)'
4653         SLIB_INSTALL_LINKS=
4654         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4655         ;;
4656     haiku)
4657         prefix_default="/boot/common"
4658         network_extralibs="-lnetwork"
4659         host_libs=
4660         ;;
4661     sunos)
4662         SHFLAGS='-shared -Wl,-h,$$(@F)'
4663         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4664         network_extralibs="-lsocket -lnsl"
4665         add_cppflags -D__EXTENSIONS__
4666         # When using suncc to build, the Solaris linker will mark
4667         # an executable with each instruction set encountered by
4668         # the Solaris assembler.  As our libraries contain their own
4669         # guards for processor-specific code, instead suppress
4670         # generation of the HWCAPS ELF section on Solaris x86 only.
4671         enabled_all suncc x86 &&
4672             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4673             add_ldflags -Wl,-M,mapfile
4674         nm_default='nm -P -g'
4675         version_script='-M'
4676         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4677         ;;
4678     netbsd)
4679         disable symver
4680         oss_indev_extralibs="-lossaudio"
4681         oss_outdev_extralibs="-lossaudio"
4682         enabled gcc || check_ldflags -Wl,-zmuldefs
4683         ;;
4684     openbsd|bitrig)
4685         disable symver
4686         SHFLAGS='-shared'
4687         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4688         SLIB_INSTALL_LINKS=
4689         oss_indev_extralibs="-lossaudio"
4690         oss_outdev_extralibs="-lossaudio"
4691         ;;
4692     dragonfly)
4693         disable symver
4694         ;;
4695     freebsd)
4696         ;;
4697     bsd/os)
4698         add_extralibs -lpoll -lgnugetopt
4699         strip="strip -d"
4700         ;;
4701     darwin)
4702         enabled ppc && add_asflags -force_cpusubtype_ALL
4703         install_name_dir_default='$(SHLIBDIR)'
4704         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4705         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4706         strip="${strip} -x"
4707         add_ldflags -Wl,-dynamic,-search_paths_first
4708         SLIBSUF=".dylib"
4709         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4710         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4711         objformat="macho"
4712         enabled x86_64 && objformat="macho64"
4713         enabled_any pic shared x86_64 ||
4714             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4715         check_header dispatch/dispatch.h &&
4716             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4717         version_script='-exported_symbols_list'
4718         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4719         ;;
4720     msys*)
4721         die "Native MSYS builds are discouraged, please use the MINGW environment."
4722         ;;
4723     mingw32*|mingw64*)
4724         if test $target_os = "mingw32ce"; then
4725             disable network
4726         else
4727             target_os=mingw32
4728         fi
4729         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4730         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4731         LIBTARGET=i386
4732         if enabled x86_64; then
4733             LIBTARGET="i386:x86-64"
4734         elif enabled arm; then
4735             LIBTARGET=arm-wince
4736         fi
4737         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4738         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4739         shlibdir_default="$bindir_default"
4740         SLIBPREF=""
4741         SLIBSUF=".dll"
4742         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4743         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4744         dlltool="${cross_prefix}dlltool"
4745         if check_cmd lib.exe -list; then
4746             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4747             if enabled x86_64; then
4748                 LIBTARGET=x64
4749             fi
4750         elif check_cmd $dlltool --version; then
4751             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4752         fi
4753         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4754         SLIB_INSTALL_LINKS=
4755         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4756         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4757         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4758         objformat="win32"
4759         ranlib=:
4760         enable dos_paths
4761         check_ldflags -Wl,--nxcompat,--dynamicbase
4762         # Lets work around some stupidity in binutils.
4763         # ld will strip relocations from executables even though we need them
4764         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4765         # however ld then forgets what the entry point should be (oops) so we
4766         # have to manually (re)set it.
4767         if enabled x86_32; then
4768             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4769         elif enabled x86_64; then
4770             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4771             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4772             # Set image base >4GB for extra entropy with HEASLR
4773             add_ldexeflags -Wl,--image-base,0x140000000
4774             append SHFLAGS -Wl,--image-base,0x180000000
4775         fi
4776         ;;
4777     win32|win64)
4778         disable symver
4779         if enabled shared; then
4780             # Link to the import library instead of the normal static library
4781             # for shared libs.
4782             LD_LIB='%.lib'
4783             # Cannot build both shared and static libs with MSVC or icl.
4784             disable static
4785         fi
4786         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4787         shlibdir_default="$bindir_default"
4788         SLIBPREF=""
4789         SLIBSUF=".dll"
4790         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4791         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4792         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4793         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4794         SLIB_INSTALL_LINKS=
4795         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4796         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4797         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4798         objformat="win32"
4799         ranlib=:
4800         enable dos_paths
4801         ;;
4802     cygwin*)
4803         target_os=cygwin
4804         shlibdir_default="$bindir_default"
4805         SLIBPREF="cyg"
4806         SLIBSUF=".dll"
4807         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4808         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4809         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4810         SLIB_INSTALL_LINKS=
4811         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4812         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4813         objformat="win32"
4814         enable dos_paths
4815         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4816         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4817         ;;
4818     *-dos|freedos|opendos)
4819         network_extralibs="-lsocket"
4820         objformat="coff"
4821         enable dos_paths
4822         add_cppflags -U__STRICT_ANSI__
4823         ;;
4824     linux)
4825         enable dv1394
4826         enable section_data_rel_ro
4827         ;;
4828     irix*)
4829         target_os=irix
4830         ranlib="echo ignoring ranlib"
4831         ;;
4832     os/2*)
4833         strip="lxlite -CS"
4834         objformat="aout"
4835         add_cppflags -D_GNU_SOURCE
4836         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4837         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4838         LIBSUF="_s.a"
4839         SLIBPREF=""
4840         SLIBSUF=".dll"
4841         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4842         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4843         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4844             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4845             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4846             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4847             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4848         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4849             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4850         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4851         SLIB_INSTALL_LINKS=
4852         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4853         enable dos_paths
4854         enable_weak os2threads
4855         ;;
4856     gnu/kfreebsd)
4857         add_cppflags -D_BSD_SOURCE
4858         ;;
4859     gnu)
4860         ;;
4861     qnx)
4862         add_cppflags -D_QNX_SOURCE
4863         network_extralibs="-lsocket"
4864         ;;
4865     symbian)
4866         SLIBSUF=".dll"
4867         enable dos_paths
4868         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4869         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4870         add_ldflags -Wl,--target1-abs,--no-undefined \
4871                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4872                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4873         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4874                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4875                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4876         ;;
4877     osf1)
4878         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4879         ;;
4880     minix)
4881         ;;
4882     plan9)
4883         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4884                      -D_REENTRANT_SOURCE        \
4885                      -D_RESEARCH_SOURCE         \
4886                      -DFD_SETSIZE=96            \
4887                      -DHAVE_SOCK_OPTS
4888         add_compat strtod.o strtod=avpriv_strtod
4889         network_extralibs='-lbsd'
4890         exeobjs=compat/plan9/main.o
4891         disable ffserver
4892         cp_f='cp'
4893         ;;
4894     none)
4895         ;;
4896     *)
4897         die "Unknown OS '$target_os'."
4898         ;;
4899 esac
4900
4901 # test if creating links works
4902 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4903 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4904 mkdir "$link_dest"
4905 $ln_s "$link_dest" "$link_name"
4906 touch "$link_dest/test_file"
4907 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4908     # create link to source path
4909     [ -e src ] && rm src
4910     $ln_s "$source_path" src
4911     source_link=src
4912 else
4913     # creating directory links doesn't work
4914     # fall back to using the full source path
4915     source_link="$source_path"
4916 fi
4917 # cleanup
4918 rm -r "$link_dest"
4919 rm -r "$link_name"
4920
4921 # determine libc flavour
4922
4923 probe_libc(){
4924     pfx=$1
4925     pfx_no_=${pfx%_}
4926     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4927     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4928         eval ${pfx}libc_type=uclibc
4929         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4930     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4931         eval ${pfx}libc_type=glibc
4932         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4933     # MinGW headers can be installed on Cygwin, so check for newlib first.
4934     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4935         eval ${pfx}libc_type=newlib
4936         add_${pfx}cppflags -U__STRICT_ANSI__
4937     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4938     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4939         eval ${pfx}libc_type=mingw64
4940         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4941             add_compat msvcrt/snprintf.o
4942             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4943         fi
4944         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4945         eval test \$${pfx_no_}cc_type = "gcc" &&
4946             add_${pfx}cppflags -D__printf__=__gnu_printf__
4947     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4948          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4949         eval ${pfx}libc_type=mingw32
4950         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4951             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4952             die "ERROR: MinGW32 runtime version must be >= 3.15."
4953         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4954         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
4955             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4956         eval test \$${pfx_no_}cc_type = "gcc" &&
4957             add_${pfx}cppflags -D__printf__=__gnu_printf__
4958     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4959         eval ${pfx}libc_type=msvcrt
4960         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4961             if [ "$pfx" = host_ ]; then
4962                 add_host_cppflags -Dsnprintf=_snprintf
4963             else
4964                 add_compat strtod.o strtod=avpriv_strtod
4965                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4966                                              _snprintf=avpriv_snprintf  \
4967                                              vsnprintf=avpriv_vsnprintf
4968             fi
4969         fi
4970         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4971         # 0x601 by default unless something else is set by the user.
4972         # This can easily lead to us detecting functions only present
4973         # in such new versions and producing binaries requiring windows 7.0.
4974         # Therefore explicitly set the default to XP unless the user has
4975         # set something else on the command line.
4976         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4977         # family. For these cases, configure is free to use any functions
4978         # found in the SDK headers by default. (Alternatively, we could force
4979         # _WIN32_WINNT to 0x0602 in that case.)
4980         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4981             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4982 #ifdef WINAPI_FAMILY
4983 #include <winapifamily.h>
4984 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4985 #error not desktop
4986 #endif
4987 #endif
4988 EOF
4989     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4990         eval ${pfx}libc_type=klibc
4991     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4992         eval ${pfx}libc_type=bionic
4993     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4994         eval ${pfx}libc_type=solaris
4995         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4996     fi
4997     check_${pfx}cc <<EOF
4998 #include <time.h>
4999 void *v = localtime_r;
5000 EOF
5001 test "$?" != 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
5002 #include <time.h>
5003 void *v = localtime_r;
5004 EOF
5005
5006 }
5007
5008 probe_libc
5009 test -n "$libc_type" && enable libc_$libc_type
5010 probe_libc host_
5011 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5012
5013 case $libc_type in
5014     bionic)
5015         add_compat strtod.o strtod=avpriv_strtod
5016         ;;
5017 esac
5018
5019 # hacks for compiler/libc/os combinations
5020
5021 if enabled_all tms470 libc_glibc; then
5022     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5023     add_cppflags -D__USER_LABEL_PREFIX__=
5024     add_cppflags -D__builtin_memset=memset
5025     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5026     add_cflags   -pds=48    # incompatible redefinition of macro
5027 fi
5028
5029 if enabled_all ccc libc_glibc; then
5030     add_ldflags -Wl,-z,now  # calls to libots crash without this
5031 fi
5032
5033 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5034     add_cppflags '-I\$(SRC_PATH)/compat/float'
5035
5036 esc(){
5037     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5038 }
5039
5040 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5041
5042 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5043
5044 set_default libdir
5045 : ${shlibdir_default:="$libdir"}
5046 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5047
5048 set_default $PATHS_LIST
5049 set_default nm
5050
5051 # we need to build at least one lib type
5052 if ! enabled_any static shared; then
5053     cat <<EOF
5054 At least one library type must be built.
5055 Specify --enable-static to build the static libraries or --enable-shared to
5056 build the shared libraries as well. To only build the shared libraries specify
5057 --disable-static in addition to --enable-shared.
5058 EOF
5059     exit 1
5060 fi
5061
5062 die_license_disabled() {
5063     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5064 }
5065
5066 die_license_disabled_gpl() {
5067     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5068 }
5069
5070 die_license_disabled gpl frei0r
5071 die_license_disabled gpl libcdio
5072 die_license_disabled gpl librubberband
5073 die_license_disabled gpl libsmbclient
5074 die_license_disabled gpl libvidstab
5075 die_license_disabled gpl libx264
5076 die_license_disabled gpl libx265
5077 die_license_disabled gpl libxavs
5078 die_license_disabled gpl libxvid
5079 die_license_disabled gpl x11grab
5080
5081 die_license_disabled nonfree cuda
5082 die_license_disabled nonfree cuvid
5083 die_license_disabled nonfree libnpp
5084 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5085 enabled gpl && die_license_disabled_gpl nonfree openssl
5086
5087 die_license_disabled version3 gmp
5088 die_license_disabled version3 libopencore_amrnb
5089 die_license_disabled version3 libopencore_amrwb
5090 die_license_disabled version3 libsmbclient
5091 die_license_disabled version3 libvo_amrwbenc
5092
5093 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5094
5095 disabled optimizations || check_cflags -fomit-frame-pointer
5096
5097 enable_weak_pic() {
5098     disabled pic && return
5099     enable pic
5100     add_cppflags -DPIC
5101     case "$target_os" in
5102     mingw*|cygwin*)
5103         ;;
5104     *)
5105         add_cflags -fPIC
5106         ;;
5107     esac
5108     add_asflags  -fPIC
5109 }
5110
5111 enabled pic && enable_weak_pic
5112
5113 check_cc <<EOF || die "Symbol mangling check failed."
5114 int ff_extern;
5115 EOF
5116 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5117 extern_prefix=${sym%%ff_extern*}
5118
5119 check_cc <<EOF && enable_weak inline_asm
5120 void foo(void) { __asm__ volatile ("" ::); }
5121 EOF
5122
5123 _restrict=
5124 for restrict_keyword in restrict __restrict__ __restrict; do
5125     check_cc <<EOF && _restrict=$restrict_keyword && break
5126 void foo(char * $restrict_keyword p);
5127 EOF
5128 done
5129
5130 check_cc <<EOF && enable pragma_deprecated
5131 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5132 EOF
5133
5134 check_cc <<EOF && enable attribute_packed
5135 struct { int x; } __attribute__((packed)) x;
5136 EOF
5137
5138 check_cc <<EOF && enable attribute_may_alias
5139 union { int x; } __attribute__((may_alias)) x;
5140 EOF
5141
5142 check_cc <<EOF || die "endian test failed"
5143 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5144 EOF
5145 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5146
5147 if ! enabled ppc64 || enabled bigendian; then
5148     disable vsx
5149 fi
5150
5151 check_gas() {
5152     log "check_gas using '$as' as AS"
5153     # :vararg is used on aarch64, arm and ppc altivec
5154     check_as <<EOF || return 1
5155 .macro m n, y:vararg=0
5156 \n: .int \y
5157 .endm
5158 m x
5159 EOF
5160     # .altmacro is only used in arm asm
5161     ! enabled arm || check_as <<EOF || return 1
5162 .altmacro
5163 EOF
5164     enable gnu_as
5165     return 0
5166 }
5167
5168 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5169     nogas=:
5170     enabled_any arm aarch64 && nogas=die
5171     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5172     as_noop=-v
5173
5174     case $as_type in
5175         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5176         gcc)  gaspp_as_type=gas ;;
5177         *)    gaspp_as_type=$as_type ;;
5178     esac
5179
5180     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5181
5182     test "${as#*gas-preprocessor.pl}" != "$as" ||
5183     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5184         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5185
5186     if ! check_gas ; then
5187         as=${gas:=$as}
5188         check_gas || \
5189             $nogas "GNU assembler not found, install/update gas-preprocessor"
5190     fi
5191
5192     check_as <<EOF && enable as_func
5193 .func test
5194 .endfunc
5195 EOF
5196 fi
5197
5198 check_inline_asm inline_asm_labels '"1:\n"'
5199
5200 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5201
5202 if enabled aarch64; then
5203     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5204     # internal assembler in clang 3.3 does not support this instruction
5205     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5206     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5207
5208     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5209
5210 elif enabled alpha; then
5211
5212     check_cflags -mieee
5213
5214 elif enabled arm; then
5215
5216     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5217
5218     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5219 float func(float a, float b){ return a+b; }
5220 EOF
5221
5222     enabled thumb && check_cflags -mthumb || check_cflags -marm
5223
5224     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5225         enable vfp_args
5226     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5227         enable vfp_args
5228     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5229         case "${cross_prefix:-$cc}" in
5230             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5231             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5232 __asm__ (".eabi_attribute 28, 1");
5233 int main(void) { return 0; }
5234 EOF
5235         esac
5236         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5237     fi
5238
5239     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5240     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5241     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5242     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5243     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5244     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5245     enabled setend  && check_insn setend  'setend be'
5246
5247     [ $target_os = linux ] || [ $target_os = android ] ||
5248         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5249             $ARCH_EXT_LIST_ARM
5250
5251     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5252
5253     check_as <<EOF && enable as_dn_directive
5254 ra .dn d0.i16
5255 .unreq ra
5256 EOF
5257
5258     # llvm's integrated assembler supports .object_arch from llvm 3.5
5259     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5260 .object_arch armv4
5261 EOF
5262
5263     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5264
5265 elif enabled mips; then
5266
5267     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5268     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5269     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5270
5271     # Enable minimum ISA based on selected options
5272     if enabled mips64; then
5273         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5274         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5275         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5276     else
5277         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5278         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5279         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5280         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5281     fi
5282
5283     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5284     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5285     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5286     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5287     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5288
5289 elif enabled parisc; then
5290
5291     if enabled gcc; then
5292         case $($cc -dumpversion) in
5293             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5294         esac
5295     fi
5296
5297 elif enabled ppc; then
5298
5299     enable local_aligned_8 local_aligned_16 local_aligned_32
5300
5301     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5302     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5303     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5304     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5305
5306     # AltiVec flags: The FSF version of GCC differs from the Apple version
5307     if enabled altivec; then
5308         check_cflags -maltivec -mabi=altivec &&
5309         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5310         check_cflags -faltivec
5311
5312         # check if our compiler supports Motorola AltiVec C API
5313         check_cc <<EOF || disable altivec
5314 $inc_altivec_h
5315 int main(void) {
5316     vector signed int v1 = (vector signed int) { 0 };
5317     vector signed int v2 = (vector signed int) { 1 };
5318     v1 = vec_add(v1, v2);
5319     return 0;
5320 }
5321 EOF
5322
5323         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5324     fi
5325
5326     if enabled vsx; then
5327         check_cflags -mvsx &&
5328         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5329     fi
5330
5331     if enabled power8; then
5332         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5333     fi
5334
5335 elif enabled x86; then
5336
5337     check_builtin rdtsc    intrin.h   "__rdtsc()"
5338     check_builtin mm_empty mmintrin.h "_mm_empty()"
5339
5340     enable local_aligned_8 local_aligned_16 local_aligned_32
5341
5342     # check whether EBP is available on x86
5343     # As 'i' is stored on the stack, this program will crash
5344     # if the base pointer is used to access it because the
5345     # base pointer is cleared in the inline assembly code.
5346     check_exec_crash <<EOF && enable ebp_available
5347 volatile int i=0;
5348 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5349 return i;
5350 EOF
5351
5352     # check whether EBX is available on x86
5353     check_inline_asm ebx_available '""::"b"(0)' &&
5354         check_inline_asm ebx_available '"":::"%ebx"'
5355
5356     # check whether xmm clobbers are supported
5357     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5358
5359     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5360         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5361
5362     # check whether binutils is new enough to compile SSSE3/MMXEXT
5363     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5364     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5365
5366     if ! disabled_any asm mmx yasm; then
5367         if check_cmd $yasmexe --version; then
5368             enabled x86_64 && yasm_extra="-m amd64"
5369             yasm_debug="-g dwarf2"
5370         elif check_cmd nasm -v; then
5371             yasmexe=nasm
5372             yasm_debug="-g -F dwarf"
5373             if enabled x86_64; then
5374                 case "$objformat" in
5375                     elf)   objformat=elf64 ;;
5376                     win32) objformat=win64 ;;
5377                 esac
5378             fi
5379         fi
5380
5381         YASMFLAGS="-f $objformat $yasm_extra"
5382         enabled pic               && append YASMFLAGS "-DPIC"
5383         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5384         case "$objformat" in
5385             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5386         esac
5387
5388         check_yasm "movbe ecx, [5]" && enable yasm ||
5389             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5390         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5391         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5392         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5393         check_yasm "CPU amdnop" || disable cpunop
5394     fi
5395
5396     case "$cpu" in
5397         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5398             disable fast_clz
5399         ;;
5400     esac
5401
5402 fi
5403
5404 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5405
5406 check_ldflags -Wl,--as-needed
5407 check_ldflags -Wl,-z,noexecstack
5408
5409 if check_func dlopen && check_func dlsym; then
5410     ldl=
5411 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5412     ldl=-ldl
5413 fi
5414
5415 avisynth_demuxer_extralibs='$ldl'
5416 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5417 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5418 frei0r_filter_extralibs='$ldl'
5419 frei0r_src_filter_extralibs='$ldl'
5420 ladspa_filter_extralibs='$ldl'
5421 nvenc_extralibs='$ldl'
5422 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5423 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5424
5425 if ! disabled network; then
5426     check_func getaddrinfo $network_extralibs
5427     check_func inet_aton $network_extralibs
5428
5429     check_type netdb.h "struct addrinfo"
5430     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5431     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5432     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5433     check_type poll.h "struct pollfd"
5434     check_type netinet/sctp.h "struct sctp_event_subscribe"
5435     check_struct "sys/socket.h" "struct msghdr" msg_flags
5436     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5437     check_type netinet/in.h "struct sockaddr_in6"
5438     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5439     check_type "sys/types.h sys/socket.h" socklen_t
5440
5441     # Prefer arpa/inet.h over winsock2
5442     if check_header arpa/inet.h ; then
5443         check_func closesocket
5444     elif check_header winsock2.h ; then
5445         check_func_headers winsock2.h closesocket -lws2 &&
5446             network_extralibs="-lws2" ||
5447         { check_func_headers winsock2.h closesocket -lws2_32 &&
5448             network_extralibs="-lws2_32"; } || disable winsock2_h network
5449         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5450
5451         check_type ws2tcpip.h socklen_t
5452         check_type ws2tcpip.h "struct addrinfo"
5453         check_type ws2tcpip.h "struct group_source_req"
5454         check_type ws2tcpip.h "struct ip_mreq_source"
5455         check_type ws2tcpip.h "struct ipv6_mreq"
5456         check_type winsock2.h "struct pollfd"
5457         check_struct winsock2.h "struct sockaddr" sa_len
5458         check_type ws2tcpip.h "struct sockaddr_in6"
5459         check_type ws2tcpip.h "struct sockaddr_storage"
5460     else
5461         disable network
5462     fi
5463 fi
5464
5465 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5466 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5467 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5468 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5469 check_builtin sarestart signal.h "SA_RESTART"
5470 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5471 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5472 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5473 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5474 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5475
5476 case "$custom_allocator" in
5477     jemalloc)
5478         # jemalloc by default does not use a prefix
5479         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5480     ;;
5481     tcmalloc)
5482         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5483         malloc_prefix=tc_
5484     ;;
5485 esac
5486
5487 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5488 check_func  ${malloc_prefix}memalign            && enable memalign
5489 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5490
5491 check_func  access
5492 check_func_headers stdlib.h arc4random
5493 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5494 check_func  fcntl
5495 check_func  fork
5496 check_func  gethrtime
5497 check_func  getopt
5498 check_func  getrusage
5499 check_func  gettimeofday
5500 check_func  isatty
5501 check_func  mach_absolute_time
5502 check_func  mkstemp
5503 check_func  mmap
5504 check_func  mprotect
5505 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5506 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5507 check_func  sched_getaffinity
5508 check_func  setrlimit
5509 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5510 check_func  strerror_r
5511 check_func  sysconf
5512 check_func  sysctl
5513 check_func  usleep
5514
5515 check_func_headers conio.h kbhit
5516 check_func_headers io.h setmode
5517 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5518 check_func_headers stdlib.h getenv
5519 check_func_headers sys/stat.h lstat
5520
5521 check_func_headers windows.h CoTaskMemFree -lole32
5522 check_func_headers windows.h GetProcessAffinityMask
5523 check_func_headers windows.h GetProcessTimes
5524 check_func_headers windows.h GetSystemTimeAsFileTime
5525 check_func_headers windows.h LoadLibrary
5526 check_func_headers windows.h MapViewOfFile
5527 check_func_headers windows.h PeekNamedPipe
5528 check_func_headers windows.h SetConsoleTextAttribute
5529 check_func_headers windows.h SetConsoleCtrlHandler
5530 check_func_headers windows.h Sleep
5531 check_func_headers windows.h VirtualAlloc
5532 check_struct windows.h "CONDITION_VARIABLE" Ptr
5533 check_func_headers glob.h glob
5534 enabled xlib &&
5535     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5536
5537 check_header AudioToolbox/AudioToolbox.h
5538 check_header direct.h
5539 check_header dirent.h
5540 check_header dlfcn.h
5541 check_header d3d11.h
5542 check_header dxva.h
5543 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5544 check_header io.h
5545 check_header libcrystalhd/libcrystalhd_if.h
5546 check_header mach/mach_time.h
5547 check_header malloc.h
5548 check_header net/udplite.h
5549 check_header poll.h
5550 check_header sys/mman.h
5551 check_header sys/param.h
5552 check_header sys/resource.h
5553 check_header sys/select.h
5554 check_header sys/time.h
5555 check_header sys/un.h
5556 check_header termios.h
5557 check_header unistd.h
5558 check_header valgrind/valgrind.h
5559 check_header vdpau/vdpau.h
5560 check_header vdpau/vdpau_x11.h
5561 check_header VideoDecodeAcceleration/VDADecoder.h
5562 check_header VideoToolbox/VideoToolbox.h
5563 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5564 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5565 check_header windows.h
5566 check_header X11/extensions/XvMClib.h
5567 check_header asm/types.h
5568
5569 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5570 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5571 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5572 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5573
5574 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5575
5576 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5577 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5578 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5579 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5580 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5581
5582 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5583 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5584 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5585 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5586 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5587 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5588
5589 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5590
5591 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5592
5593 if ! disabled w32threads && ! enabled pthreads; then
5594     check_func_headers "windows.h process.h" _beginthreadex &&
5595         enable w32threads || disable w32threads
5596     if ! enabled w32threads && enabled winrt; then
5597         check_func_headers "windows.h" CreateThread &&
5598             enable w32threads || disable w32threads
5599     fi
5600 fi
5601
5602 # check for some common methods of building with pthread support
5603 # do this before the optional library checks as some of them require pthreads
5604 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5605     enable pthreads
5606     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5607         add_cflags -pthread
5608         add_extralibs -pthread
5609     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5610         add_cflags -pthreads
5611         add_extralibs -pthreads
5612     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5613         add_cflags -ldl -pthread
5614         add_extralibs -ldl -pthread
5615     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5616         add_extralibs -lpthreadGC2
5617     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5618         :
5619     elif ! check_func pthread_join && ! check_func pthread_create; then
5620         disable pthreads
5621     fi
5622     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5623 fi
5624
5625
5626 if enabled pthreads; then
5627   check_func pthread_cancel
5628 fi
5629
5630 enabled pthreads &&
5631     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5632
5633 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5634 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5635 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5636
5637 check_lib math.h sin -lm && LIBM="-lm"
5638 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5639
5640 atan2f_args=2
5641 copysign_args=2
5642 hypot_args=2
5643 ldexpf_args=2
5644 powf_args=2
5645
5646 for func in $MATH_FUNCS; do
5647     eval check_mathfunc $func \${${func}_args:-1}
5648 done
5649
5650 for func in $COMPLEX_FUNCS; do
5651     eval check_complexfunc $func \${${func}_args:-1}
5652 done
5653
5654 # Enable CUVID by default if CUDA is enabled
5655 if enabled cuda && ! disabled cuvid; then
5656     enable cuvid
5657 fi
5658
5659 # these are off by default, so fail if requested and not available
5660 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5661 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5662                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5663 enabled cuda              && { check_lib2 cuda.h cuInit -lcuda ||
5664                                die "ERROR: CUDA not found"; }
5665 enabled cuvid             && { add_cflags -I$source_path;
5666                                check_lib2 "compat/cuda/cuviddec.h" cuvidCreateDecoder -lnvcuvid ||
5667                                die "ERROR: CUVID not found"; } &&
5668                              { enabled cuda ||
5669                                die "ERROR: CUVID requires CUDA"; }
5670 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5671 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5672 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5673 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5674                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5675 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5676 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5677 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5678 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5679                                check_lib2 "dlfcn.h" dlopen -ldl; }
5680 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5681 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5682 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5683 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5684 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5685 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5686                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5687                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5688 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5689 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5690                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5691                                  warn "using libfdk without pkg-config"; } }
5692 flite_libs="-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"
5693 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5694 enabled fontconfig        && enable libfontconfig
5695 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5696 enabled libfreetype       && require_libfreetype
5697 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5698 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5699 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5700                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5701                                done || die "ERROR: libgsm not found"; }
5702 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5703 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5704 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5705 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5706 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5707 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5708 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5709 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5710 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5711 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5712                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5713                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5714                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5715 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5716 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5717                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5718                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5719                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5720                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5721                                die "ERROR: libopenjpeg not found"; }
5722 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5723 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5724 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5725 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5726 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5727 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5728 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5729 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5730                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5731 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5732 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5733 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5734 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5735 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5736 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5737 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5738                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5739                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5740 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5741 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5742 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5743 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5744
5745 enabled libvpx            && {
5746     enabled libvpx_vp8_decoder && {
5747         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5748             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5749                 die "ERROR: libvpx decoder version must be >=0.9.1";
5750     }
5751     enabled libvpx_vp8_encoder && {
5752         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5753             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5754                 die "ERROR: libvpx encoder version must be >=0.9.7";
5755     }
5756     enabled libvpx_vp9_decoder && {
5757         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5758             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5759                 disable libvpx_vp9_decoder;
5760     }
5761     enabled libvpx_vp9_encoder && {
5762         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5763             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5764                 disable libvpx_vp9_encoder;
5765     }
5766     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5767         die "libvpx enabled but no supported decoders found"
5768     fi
5769 }
5770
5771 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5772 enabled libwebp           && {
5773     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5774     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5775 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5776                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5777                                  warn "using libx264 without pkg-config"; } } &&
5778                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5779                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5780                              { check_cpp_condition x264.h "X264_MPEG2" &&
5781                                enable libx262; }
5782 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5783                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5784                                die "ERROR: libx265 version must be >= 68."; }
5785 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5786 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5787 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5788 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5789 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5790                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5791                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5792 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5793 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5794                                 { ! enabled cross_compile && {
5795                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5796                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5797                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5798                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5799                                die "ERROR: mmal not found"; }
5800 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5801
5802 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5803 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5804                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5805                                die "ERROR: openal not found"; } &&
5806                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5807                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5808 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5809                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5810                                die "ERROR: opencl not found"; } &&
5811                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5812                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5813                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5814 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5815                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5816                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5817                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5818                                die "ERROR: opengl not found."
5819                              }
5820 enabled omx_rpi && enable omx
5821 enabled omx               && { check_header OMX_Core.h ||
5822                                 { ! enabled cross_compile && enabled omx_rpi && {
5823                                     add_cflags -isystem/opt/vc/include/IL ; }
5824                                 check_header OMX_Core.h ; } ||
5825                                die "ERROR: OpenMAX IL headers not found"; }
5826 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5827                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5828                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5829                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5830                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5831                                die "ERROR: openssl not found"; }
5832 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5833
5834 # libdc1394 check
5835 if enabled libdc1394; then
5836     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5837         enable libdc1394_2; } ||
5838     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5839         enable libdc1394_1; } ||
5840     die "ERROR: No version of libdc1394 found "
5841 fi
5842
5843 if enabled gcrypt; then
5844     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5845     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5846         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5847         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5848         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5849             die "ERROR: gcrypt not found"
5850         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5851     else
5852         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5853     fi
5854 fi
5855
5856 disabled sdl && disable sdl2
5857 if ! disabled sdl2; then
5858     SDL2_CONFIG="${cross_prefix}sdl2-config"
5859     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5860         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5861         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5862         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5863     else
5864       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5865         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5866         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5867         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5868         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5869         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5870       fi
5871     fi
5872     if test $target_os = "mingw32"; then
5873         sdl2_libs="$sdl2_libs -mconsole"
5874     fi
5875 fi
5876 enabled sdl2 && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5877
5878 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5879     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5880     enable securetransport; }
5881
5882 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5883                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5884
5885 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5886 enabled makeinfo \
5887     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5888     && enable makeinfo_html || disable makeinfo_html
5889 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5890 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5891 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5892 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5893
5894 check_header linux/fb.h
5895 check_header linux/videodev.h
5896 check_header linux/videodev2.h
5897 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5898
5899 check_header sys/videoio.h
5900 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5901
5902 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5903 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5904 # w32api 3.12 had it defined wrong
5905 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5906
5907 check_type "dshow.h" IBaseFilter
5908
5909 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5910 { check_header dev/bktr/ioctl_meteor.h &&
5911   check_header dev/bktr/ioctl_bt848.h; } ||
5912 { check_header machine/ioctl_meteor.h &&
5913   check_header machine/ioctl_bt848.h; } ||
5914 { check_header dev/video/meteor/ioctl_meteor.h &&
5915   check_header dev/video/bktr/ioctl_bt848.h; } ||
5916 check_header dev/ic/bt8xx.h
5917
5918 check_header sndio.h
5919 if check_struct sys/soundcard.h audio_buf_info bytes; then
5920     enable_safe sys/soundcard.h
5921 else
5922     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5923     #include <sys/soundcard.h>
5924     audio_buf_info abc;
5925 EOF
5926 fi
5927 check_header soundcard.h
5928
5929 enabled_any alsa_indev alsa_outdev &&
5930     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5931
5932 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5933     check_func jack_port_get_latency_range -ljack
5934
5935 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5936
5937 if enabled libcdio; then
5938     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5939     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5940     die "ERROR: No usable libcdio/cdparanoia found"
5941 fi
5942
5943 enabled xlib &&
5944     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5945
5946 if ! disabled libxcb; then
5947     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5948         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5949     } && disable x11grab && enable libxcb
5950
5951 if enabled libxcb; then
5952     disabled libxcb_shm || {
5953         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5954             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5955         } && check_header sys/shm.h && enable libxcb_shm; }
5956
5957     disabled libxcb_xfixes || {
5958         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5959             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5960         } && enable libxcb_xfixes; }
5961
5962     disabled libxcb_shape || {
5963         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5964             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5965         } && enable libxcb_shape; }
5966
5967     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5968     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5969 fi
5970 fi
5971
5972 if enabled x11grab; then
5973     enabled xlib || die "ERROR: Xlib not found"
5974     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5975     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5976 fi
5977
5978 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5979
5980 enabled dxva2api_h &&
5981     check_cc <<EOF && enable dxva2api_cobj
5982 #define _WIN32_WINNT 0x0600
5983 #define COBJMACROS
5984 #include <windows.h>
5985 #include <d3d9.h>
5986 #include <dxva2api.h>
5987 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5988 EOF
5989
5990 enabled vaapi &&
5991     check_lib va/va.h vaInitialize -lva ||
5992     disable vaapi
5993
5994 enabled vaapi &&
5995     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
5996     disable vaapi
5997
5998 if enabled vaapi ; then
5999     enabled xlib &&
6000     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6001     enable vaapi_x11
6002
6003     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6004     enable vaapi_drm
6005 fi
6006
6007 enabled vdpau &&
6008     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6009     disable vdpau
6010
6011 enabled vdpau && enabled xlib &&
6012     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6013     enable vdpau_x11
6014
6015 if enabled x86; then
6016     case $target_os in
6017         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6018             ;;
6019         *)
6020             disable nvenc
6021             ;;
6022     esac
6023 else
6024     disable nvenc
6025 fi
6026
6027 enabled nvenc &&
6028     check_cc -I$source_path <<EOF || disable nvenc
6029 #include "compat/nvenc/nvEncodeAPI.h"
6030 NV_ENCODE_API_FUNCTION_LIST flist;
6031 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6032 int main(void) { return 0; }
6033 EOF
6034
6035 # Funny iconv installations are not unusual, so check it after all flags have been set
6036 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6037
6038 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6039
6040 # add some useful compiler flags if supported
6041 check_cflags -Wdeclaration-after-statement
6042 check_cflags -Wall
6043 check_cflags -Wdisabled-optimization
6044 check_cflags -Wpointer-arith
6045 check_cflags -Wredundant-decls
6046 check_cflags -Wwrite-strings
6047 check_cflags -Wtype-limits
6048 check_cflags -Wundef
6049 check_cflags -Wmissing-prototypes
6050 check_cflags -Wno-pointer-to-int-cast
6051 check_cflags -Wstrict-prototypes
6052 check_cflags -Wempty-body
6053 enabled extra_warnings && check_cflags -Winline
6054 enabled extra_warnings && check_cflags -Wcast-qual
6055
6056 check_disable_warning(){
6057     warning_flag=-W${1#-Wno-}
6058     test_cflags $warning_flag && add_cflags $1
6059 }
6060
6061 check_disable_warning -Wno-parentheses
6062 check_disable_warning -Wno-switch
6063 check_disable_warning -Wno-format-zero-length
6064 check_disable_warning -Wno-pointer-sign
6065 check_disable_warning -Wno-unused-const-variable
6066
6067 # add some linker flags
6068 check_ldflags -Wl,--warn-common
6069 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6070 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6071 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6072 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6073
6074 # add some strip flags
6075 # -wN '..@*' is more selective than -x, but not available everywhere.
6076 check_stripflags -wN \'..@*\' || check_stripflags -x
6077
6078 enabled neon_clobber_test &&
6079     check_ldflags -Wl,--wrap,avcodec_open2              \
6080                   -Wl,--wrap,avcodec_decode_audio4      \
6081                   -Wl,--wrap,avcodec_decode_video2      \
6082                   -Wl,--wrap,avcodec_decode_subtitle2   \
6083                   -Wl,--wrap,avcodec_encode_audio2      \
6084                   -Wl,--wrap,avcodec_encode_video2      \
6085                   -Wl,--wrap,avcodec_send_packet        \
6086                   -Wl,--wrap,avcodec_receive_frame      \
6087                   -Wl,--wrap,avcodec_send_frame         \
6088                   -Wl,--wrap,avcodec_receive_packet     \
6089                   -Wl,--wrap,avcodec_encode_subtitle    \
6090                   -Wl,--wrap,swr_convert                \
6091                   -Wl,--wrap,avresample_convert ||
6092     disable neon_clobber_test
6093
6094 enabled xmm_clobber_test &&
6095     check_ldflags -Wl,--wrap,avcodec_open2              \
6096                   -Wl,--wrap,avcodec_decode_audio4      \
6097                   -Wl,--wrap,avcodec_decode_video2      \
6098                   -Wl,--wrap,avcodec_decode_subtitle2   \
6099                   -Wl,--wrap,avcodec_encode_audio2      \
6100                   -Wl,--wrap,avcodec_encode_video2      \
6101                   -Wl,--wrap,avcodec_encode_subtitle    \
6102                   -Wl,--wrap,avcodec_send_packet        \
6103                   -Wl,--wrap,avcodec_receive_frame      \
6104                   -Wl,--wrap,avcodec_send_frame         \
6105                   -Wl,--wrap,avcodec_receive_packet     \
6106                   -Wl,--wrap,swr_convert                \
6107                   -Wl,--wrap,avresample_convert         \
6108                   -Wl,--wrap,sws_scale ||
6109     disable xmm_clobber_test
6110
6111 check_ld "cc" <<EOF && enable proper_dce
6112 extern const int array[512];
6113 static inline int func(void) { return array[0]; }
6114 int main(void) { return 0; }
6115 EOF
6116
6117 if enabled proper_dce; then
6118     echo "X { local: *; };" > $TMPV
6119     if test_ldflags -Wl,${version_script},$TMPV; then
6120         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6121         check_cc <<EOF && enable symver_asm_label
6122 void ff_foo(void) __asm__ ("av_foo@VERSION");
6123 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6124 EOF
6125         check_cc <<EOF && enable symver_gnu_asm
6126 __asm__(".symver ff_foo,av_foo@VERSION");
6127 void ff_foo(void) {}
6128 EOF
6129     fi
6130 fi
6131
6132 if [ -z "$optflags" ]; then
6133     if enabled small; then
6134         optflags=$cflags_size
6135     elif enabled optimizations; then
6136         optflags=$cflags_speed
6137     else
6138         optflags=$cflags_noopt
6139     fi
6140 fi
6141
6142 check_optflags(){
6143     check_cflags "$@"
6144     enabled lto && check_ldflags "$@"
6145 }
6146
6147
6148 if enabled lto; then
6149     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6150     check_cflags  -flto
6151     check_ldflags -flto $cpuflags
6152     disable inline_asm_direct_symbol_refs
6153 fi
6154
6155 check_optflags $optflags
6156 check_optflags -fno-math-errno
6157 check_optflags -fno-signed-zeros
6158
6159 enabled ftrapv && check_cflags -ftrapv
6160
6161 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6162 int x;
6163 EOF
6164
6165
6166 if enabled icc; then
6167     # Just warnings, no remarks
6168     check_cflags -w1
6169     # -wd: Disable following warnings
6170     # 144, 167, 556: -Wno-pointer-sign
6171     # 188: enumerated type mixed with another type
6172     # 1292: attribute "foo" ignored
6173     # 1419: external declaration in primary source file
6174     # 10006: ignoring unknown option -fno-signed-zeros
6175     # 10148: ignoring unknown option -Wno-parentheses
6176     # 10156: ignoring option '-W'; no argument required
6177     # 13200: No EMMS instruction before call to function
6178     # 13203: No EMMS instruction before return from function
6179     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6180     # 11030: Warning unknown option --as-needed
6181     # 10156: ignoring option '-export'; no argument required
6182     check_ldflags -wd10156,11030
6183     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6184     enable ebp_available
6185     # The test above does not test linking
6186     enabled lto && disable symver_asm_label
6187     if enabled x86_32; then
6188         icc_version=$($cc -dumpversion)
6189         test ${icc_version%%.*} -ge 11 &&
6190             check_cflags -falign-stack=maintain-16-byte ||
6191             disable aligned_stack
6192     fi
6193 elif enabled ccc; then
6194     # disable some annoying warnings
6195     add_cflags -msg_disable bitnotint
6196     add_cflags -msg_disable mixfuncvoid
6197     add_cflags -msg_disable nonstandcast
6198     add_cflags -msg_disable unsupieee
6199 elif enabled gcc; then
6200     check_optflags -fno-tree-vectorize
6201     check_cflags -Werror=format-security
6202     check_cflags -Werror=implicit-function-declaration
6203     check_cflags -Werror=missing-prototypes
6204     check_cflags -Werror=return-type
6205     check_cflags -Werror=vla
6206     check_cflags -Wformat
6207     check_cflags -fdiagnostics-color=auto
6208     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6209 elif enabled llvm_gcc; then
6210     check_cflags -mllvm -stack-alignment=16
6211 elif enabled clang; then
6212     check_cflags -mllvm -stack-alignment=16
6213     check_cflags -mstack-alignment=16
6214     check_cflags -Qunused-arguments
6215     check_cflags -Werror=implicit-function-declaration
6216     check_cflags -Werror=missing-prototypes
6217     check_cflags -Werror=return-type
6218 elif enabled cparser; then
6219     add_cflags -Wno-missing-variable-declarations
6220     add_cflags -Wno-empty-statement
6221 elif enabled armcc; then
6222     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6223     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6224     # 2523: use of inline assembly is deprecated
6225     add_cflags -W${armcc_opt},--diag_suppress=2523
6226     add_cflags -W${armcc_opt},--diag_suppress=1207
6227     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6228     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6229     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6230     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6231 elif enabled tms470; then
6232     add_cflags -pds=824 -pds=837
6233     disable inline_asm
6234 elif enabled pathscale; then
6235     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6236 elif enabled_any msvc icl; then
6237     enabled x86_32 && disable aligned_stack
6238     enabled_all x86_32 debug && add_cflags -Oy-
6239     enabled debug && add_ldflags -debug
6240     enable pragma_deprecated
6241     if enabled icl; then
6242         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6243         # (correctly) on icl 13.x.
6244         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6245             add_cflags -Qansi-alias
6246         # Some inline asm is not compilable in debug
6247         if enabled debug; then
6248             disable ebp_available
6249             disable ebx_available
6250         fi
6251     fi
6252     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6253     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6254     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6255     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6256     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6257     # MSVC 2013 and newer can handle it fine.
6258     # If this declspec fails, force including stdlib.h before the restrict redefinition
6259     # happens in config.h.
6260     if [ $_restrict != restrict ]; then
6261         check_cc <<EOF || add_cflags -FIstdlib.h
6262 __declspec($_restrict) void* foo(int);
6263 EOF
6264     fi
6265     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6266     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6267     # this flag should be re-checked on newer compiler releases and put under a
6268     # version check once its fixed
6269     check_cflags -d2SSAOptimizer-
6270 fi
6271
6272 for pfx in "" host_; do
6273     varname=${pfx%_}cc_type
6274     eval "type=\$$varname"
6275     if [ $type = "msvc" ]; then
6276         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6277 static inline int foo(int a) { return a; }
6278 EOF
6279     fi
6280 done
6281
6282 case $as_type in
6283     clang)
6284         add_asflags -Qunused-arguments
6285     ;;
6286 esac
6287
6288 case $ld_type in
6289     clang)
6290         check_ldflags -Qunused-arguments
6291     ;;
6292 esac
6293
6294 case $target_os in
6295     osf1)
6296         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6297     ;;
6298     plan9)
6299         add_cppflags -Dmain=plan9_main
6300     ;;
6301 esac
6302
6303 enable frame_thread_encoder
6304
6305 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6306
6307 check_deps $CONFIG_LIST       \
6308            $CONFIG_EXTRA      \
6309            $HAVE_LIST         \
6310            $ALL_COMPONENTS    \
6311
6312 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"
6313
6314
6315 if test $target_os = "haiku"; then
6316     disable memalign
6317     disable posix_memalign
6318 fi
6319
6320 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6321     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6322     enable dxva2_lib
6323
6324 ! enabled_any memalign posix_memalign aligned_malloc &&
6325     enabled simd_align_16 && enable memalign_hack
6326
6327 # add_dep lib dep
6328 # -> enable ${lib}_deps_${dep}
6329 # -> add $dep to ${lib}_deps only once
6330 add_dep() {
6331     lib=$1
6332     dep=$2
6333     enabled "${lib}_deps_${dep}" && return 0
6334     enable  "${lib}_deps_${dep}"
6335     prepend "${lib}_deps" $dep
6336 }
6337
6338 # merge deps lib components
6339 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6340 merge_deps() {
6341     lib=$1
6342     shift
6343     for comp in $*; do
6344         enabled $comp || continue
6345         eval "dep=\"\$${comp}_deps\""
6346         for d in $dep; do
6347             add_dep $lib $d
6348         done
6349     done
6350 }
6351
6352 merge_deps libavfilter $FILTER_LIST
6353
6354 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6355
6356 for thread in $THREADS_LIST; do
6357     if enabled $thread; then
6358         test -n "$thread_type" &&
6359             die "ERROR: Only one thread type must be selected." ||
6360             thread_type="$thread"
6361     fi
6362 done
6363
6364 enabled zlib && add_cppflags -DZLIB_CONST
6365
6366 # conditional library dependencies, in linking order
6367 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6368 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6369 enabled aresample_filter    && prepend avfilter_deps "swresample"
6370 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6371 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6372 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6373 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6374 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6375 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6376 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6377 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6378 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6379 enabled pan_filter          && prepend avfilter_deps "swresample"
6380 enabled pp_filter           && prepend avfilter_deps "postproc"
6381 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6382 enabled resample_filter && prepend avfilter_deps "avresample"
6383 enabled sab_filter          && prepend avfilter_deps "swscale"
6384 enabled scale_filter    && prepend avfilter_deps "swscale"
6385 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6386 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6387 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6388 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6389 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6390 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6391 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6392 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6393 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6394
6395 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6396
6397 enabled opus_decoder    && prepend avcodec_deps "swresample"
6398
6399 expand_deps(){
6400     lib_deps=${1}_deps
6401     eval "deps=\$$lib_deps"
6402     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6403     unique $lib_deps
6404 }
6405
6406 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6407 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6408
6409 map 'expand_deps $v' $LIBRARY_LIST
6410
6411 echo "install prefix            $prefix"
6412 echo "source path               $source_path"
6413 echo "C compiler                $cc"
6414 echo "C library                 $libc_type"
6415 if test "$host_cc" != "$cc"; then
6416     echo "host C compiler           $host_cc"
6417     echo "host C library            $host_libc_type"
6418 fi
6419 echo "ARCH                      $arch ($cpu)"
6420 if test "$build_suffix" != ""; then
6421     echo "build suffix              $build_suffix"
6422 fi
6423 if test "$progs_suffix" != ""; then
6424     echo "progs suffix              $progs_suffix"
6425 fi
6426 if test "$extra_version" != ""; then
6427     echo "version string suffix     $extra_version"
6428 fi
6429 echo "big-endian                ${bigendian-no}"
6430 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6431 if enabled x86; then
6432     echo "${yasmexe}                      ${yasm-no}"
6433     echo "MMX enabled               ${mmx-no}"
6434     echo "MMXEXT enabled            ${mmxext-no}"
6435     echo "3DNow! enabled            ${amd3dnow-no}"
6436     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6437     echo "SSE enabled               ${sse-no}"
6438     echo "SSSE3 enabled             ${ssse3-no}"
6439     echo "AESNI enabled             ${aesni-no}"
6440     echo "AVX enabled               ${avx-no}"
6441     echo "XOP enabled               ${xop-no}"
6442     echo "FMA3 enabled              ${fma3-no}"
6443     echo "FMA4 enabled              ${fma4-no}"
6444     echo "i686 features enabled     ${i686-no}"
6445     echo "CMOV is fast              ${fast_cmov-no}"
6446     echo "EBX available             ${ebx_available-no}"
6447     echo "EBP available             ${ebp_available-no}"
6448 fi
6449 if enabled aarch64; then
6450     echo "NEON enabled              ${neon-no}"
6451     echo "VFP enabled               ${vfp-no}"
6452 fi
6453 if enabled arm; then
6454     echo "ARMv5TE enabled           ${armv5te-no}"
6455     echo "ARMv6 enabled             ${armv6-no}"
6456     echo "ARMv6T2 enabled           ${armv6t2-no}"
6457     echo "VFP enabled               ${vfp-no}"
6458     echo "NEON enabled              ${neon-no}"
6459     echo "THUMB enabled             ${thumb-no}"
6460 fi
6461 if enabled mips; then
6462     echo "MIPS FPU enabled          ${mipsfpu-no}"
6463     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6464     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6465     echo "MIPS MSA enabled          ${msa-no}"
6466     echo "LOONGSON MMI enabled      ${mmi-no}"
6467 fi
6468 if enabled ppc; then
6469     echo "AltiVec enabled           ${altivec-no}"
6470     echo "VSX enabled               ${vsx-no}"
6471     echo "POWER8 enabled            ${power8-no}"
6472     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6473     echo "dcbzl available           ${dcbzl-no}"
6474 fi
6475 echo "debug symbols             ${debug-no}"
6476 echo "strip symbols             ${stripping-no}"
6477 echo "optimize for size         ${small-no}"
6478 echo "optimizations             ${optimizations-no}"
6479 echo "static                    ${static-no}"
6480 echo "shared                    ${shared-no}"
6481 echo "postprocessing support    ${postproc-no}"
6482 echo "new filter support        ${avfilter-no}"
6483 echo "network support           ${network-no}"
6484 echo "threading support         ${thread_type-no}"
6485 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6486 echo "SDL2 support              ${sdl2-no}"
6487 echo "opencl enabled            ${opencl-no}"
6488 echo "JNI support               ${jni-no}"
6489 echo "texi2html enabled         ${texi2html-no}"
6490 echo "perl enabled              ${perl-no}"
6491 echo "pod2man enabled           ${pod2man-no}"
6492 echo "makeinfo enabled          ${makeinfo-no}"
6493 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6494 test -n "$random_seed" &&
6495     echo "random seed               ${random_seed}"
6496 echo
6497
6498 echo "Enabled programs:"
6499 print_enabled '' $PROGRAM_LIST | print_in_columns
6500 echo
6501
6502 echo "External libraries:"
6503 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6504 echo
6505
6506 echo "External libraries providing hardware acceleration:"
6507 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6508 echo
6509
6510 echo "Libraries:"
6511 print_enabled '' $LIBRARY_LIST | print_in_columns
6512 echo
6513
6514 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6515     echo "Enabled ${type}s:"
6516     eval list=\$$(toupper $type)_LIST
6517     print_enabled '_*' $list | print_in_columns
6518     echo
6519 done
6520
6521 license="LGPL version 2.1 or later"
6522 if enabled nonfree; then
6523     license="nonfree and unredistributable"
6524 elif enabled gplv3; then
6525     license="GPL version 3 or later"
6526 elif enabled lgplv3; then
6527     license="LGPL version 3 or later"
6528 elif enabled gpl; then
6529     license="GPL version 2 or later"
6530 fi
6531
6532 echo "License: $license"
6533
6534 echo "Creating config.mak, config.h, and doc/config.texi..."
6535
6536 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6537
6538 enabled stripping || strip="echo skipping strip"
6539
6540 config_files="$TMPH config.mak doc/config.texi"
6541
6542 cat > config.mak <<EOF
6543 # Automatically generated by configure - do not modify!
6544 ifndef FFMPEG_CONFIG_MAK
6545 FFMPEG_CONFIG_MAK=1
6546 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6547 prefix=$prefix
6548 LIBDIR=\$(DESTDIR)$libdir
6549 SHLIBDIR=\$(DESTDIR)$shlibdir
6550 INCDIR=\$(DESTDIR)$incdir
6551 BINDIR=\$(DESTDIR)$bindir
6552 DATADIR=\$(DESTDIR)$datadir
6553 DOCDIR=\$(DESTDIR)$docdir
6554 MANDIR=\$(DESTDIR)$mandir
6555 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6556 INSTALL_NAME_DIR=$install_name_dir
6557 SRC_PATH=$source_path
6558 SRC_LINK=$source_link
6559 ifndef MAIN_MAKEFILE
6560 SRC_PATH:=\$(SRC_PATH:.%=..%)
6561 endif
6562 CC_IDENT=$cc_ident
6563 ARCH=$arch
6564 INTRINSICS=$intrinsics
6565 CC=$cc
6566 CXX=$cxx
6567 AS=$as
6568 OBJCC=$objcc
6569 LD=$ld
6570 DEPCC=$dep_cc
6571 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6572 DEPAS=$as
6573 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6574 YASM=$yasmexe
6575 DEPYASM=$yasmexe
6576 AR=$ar
6577 ARFLAGS=$arflags
6578 AR_O=$ar_o
6579 RANLIB=$ranlib
6580 STRIP=$strip
6581 CP=cp -p
6582 LN_S=$ln_s
6583 CPPFLAGS=$CPPFLAGS
6584 CFLAGS=$CFLAGS
6585 CXXFLAGS=$CXXFLAGS
6586 OBJCFLAGS=$OBJCFLAGS
6587 ASFLAGS=$ASFLAGS
6588 AS_C=$AS_C
6589 AS_O=$AS_O
6590 OBJCC_C=$OBJCC_C
6591 OBJCC_E=$OBJCC_E
6592 OBJCC_O=$OBJCC_O
6593 CC_C=$CC_C
6594 CC_E=$CC_E
6595 CC_O=$CC_O
6596 CXX_C=$CXX_C
6597 CXX_O=$CXX_O
6598 LD_O=$LD_O
6599 LD_LIB=$LD_LIB
6600 LD_PATH=$LD_PATH
6601 DLLTOOL=$dlltool
6602 WINDRES=$windres
6603 DEPWINDRES=$dep_cc
6604 DOXYGEN=$doxygen
6605 LDFLAGS=$LDFLAGS
6606 LDEXEFLAGS=$LDEXEFLAGS
6607 LDLIBFLAGS=$LDLIBFLAGS
6608 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6609 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6610 YASMFLAGS=$YASMFLAGS
6611 BUILDSUF=$build_suffix
6612 PROGSSUF=$progs_suffix
6613 FULLNAME=$FULLNAME
6614 LIBPREF=$LIBPREF
6615 LIBSUF=$LIBSUF
6616 LIBNAME=$LIBNAME
6617 SLIBPREF=$SLIBPREF
6618 SLIBSUF=$SLIBSUF
6619 EXESUF=$EXESUF
6620 EXTRA_VERSION=$extra_version
6621 CCDEP=$CCDEP
6622 CXXDEP=$CXXDEP
6623 CCDEP_FLAGS=$CCDEP_FLAGS
6624 ASDEP=$ASDEP
6625 ASDEP_FLAGS=$ASDEP_FLAGS
6626 CC_DEPFLAGS=$CC_DEPFLAGS
6627 AS_DEPFLAGS=$AS_DEPFLAGS
6628 HOSTCC=$host_cc
6629 HOSTLD=$host_ld
6630 HOSTCFLAGS=$host_cflags
6631 HOSTCPPFLAGS=$host_cppflags
6632 HOSTEXESUF=$HOSTEXESUF
6633 HOSTLDFLAGS=$host_ldflags
6634 HOSTLIBS=$host_libs
6635 DEPHOSTCC=$host_cc
6636 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6637 HOSTCCDEP=$HOSTCCDEP
6638 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6639 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6640 HOSTCC_C=$HOSTCC_C
6641 HOSTCC_O=$HOSTCC_O
6642 HOSTLD_O=$HOSTLD_O
6643 TARGET_EXEC=$target_exec $target_exec_args
6644 TARGET_PATH=$target_path
6645 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6646 CFLAGS-ffplay=${sdl2_cflags}
6647 ZLIB=$($ldflags_filter -lz)
6648 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6649 EXTRALIBS=$extralibs
6650 COMPAT_OBJS=$compat_objs
6651 EXEOBJS=$exeobjs
6652 INSTALL=$install
6653 LIBTARGET=${LIBTARGET}
6654 SLIBNAME=${SLIBNAME}
6655 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6656 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6657 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6658 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6659 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6660 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6661 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6662 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6663 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6664 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6665 NOREDZONE_FLAGS=$noredzone_flags
6666 EOF
6667
6668 get_version(){
6669     lcname=lib${1}
6670     name=$(toupper $lcname)
6671     file=$source_path/$lcname/version.h
6672     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6673     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6674     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6675     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6676     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6677     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6678 }
6679
6680 map 'get_version $v' $LIBRARY_LIST
6681
6682 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6683
6684 print_program_libs(){
6685     eval "program_libs=\$${1}_libs"
6686     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6687 }
6688
6689 map 'print_program_libs $v' $PROGRAM_LIST
6690
6691 cat > $TMPH <<EOF
6692 /* Automatically generated by configure - do not modify! */
6693 #ifndef FFMPEG_CONFIG_H
6694 #define FFMPEG_CONFIG_H
6695 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6696 #define FFMPEG_LICENSE "$(c_escape $license)"
6697 #define CONFIG_THIS_YEAR 2016
6698 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6699 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6700 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6701 #define av_restrict $_restrict
6702 #define EXTERN_PREFIX "${extern_prefix}"
6703 #define EXTERN_ASM ${extern_prefix}
6704 #define BUILDSUF "$build_suffix"
6705 #define SLIBSUF "$SLIBSUF"
6706 #define HAVE_MMX2 HAVE_MMXEXT
6707 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6708 EOF
6709
6710 test -n "$assert_level" &&
6711     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6712
6713 test -n "$malloc_prefix" &&
6714     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6715
6716 if enabled yasm; then
6717     append config_files $TMPASM
6718     printf '' >$TMPASM
6719 fi
6720
6721 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6722
6723
6724 mkdir -p doc
6725 mkdir -p tests
6726 mkdir -p tests/api
6727 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6728
6729 print_config ARCH_   "$config_files" $ARCH_LIST
6730 print_config HAVE_   "$config_files" $HAVE_LIST
6731 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6732                                      $CONFIG_EXTRA      \
6733                                      $ALL_COMPONENTS    \
6734
6735 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6736 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6737
6738 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6739 cp_if_changed $TMPH config.h
6740 touch .config
6741
6742 enabled yasm && cp_if_changed $TMPASM config.asm
6743
6744 cat > $TMPH <<EOF
6745 /* Generated by ffconf */
6746 #ifndef AVUTIL_AVCONFIG_H
6747 #define AVUTIL_AVCONFIG_H
6748 EOF
6749
6750 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6751
6752 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6753
6754 cp_if_changed $TMPH libavutil/avconfig.h
6755
6756 if test -n "$WARNINGS"; then
6757     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6758     enabled fatal_warnings && exit 1
6759 fi
6760
6761 # generate the lists of enabled components
6762 print_enabled_components(){
6763     file=$1
6764     struct_name=$2
6765     name=$3
6766     shift 3
6767     echo "static const $struct_name *$name[] = {" > $TMPH
6768     for c in $*; do
6769         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6770     done
6771     echo "    NULL };" >> $TMPH
6772     cp_if_changed $TMPH $file
6773 }
6774
6775 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6776 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6777
6778 # build pkg-config files
6779
6780 lib_version(){
6781     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6782 }
6783
6784 pkgconfig_generate(){
6785     name=$1
6786     shortname=${name#lib}${build_suffix}
6787     comment=$2
6788     version=$3
6789     libs=$4
6790     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6791     requires=${requires%, }
6792     enabled ${name#lib} || return 0
6793     mkdir -p $name
6794     cat <<EOF > $name/$name${build_suffix}.pc
6795 prefix=$prefix
6796 exec_prefix=\${prefix}
6797 libdir=$libdir
6798 includedir=$incdir
6799
6800 Name: $name
6801 Description: $comment
6802 Version: $version
6803 Requires: $(enabled shared || echo $requires)
6804 Requires.private: $(enabled shared && echo $requires)
6805 Conflicts:
6806 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6807 Libs.private: $(enabled shared && echo $libs)
6808 Cflags: -I\${includedir}
6809 EOF
6810
6811 mkdir -p doc/examples/pc-uninstalled
6812 includedir=${source_path}
6813 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6814     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6815 prefix=
6816 exec_prefix=
6817 libdir=\${pcfiledir}/../../../$name
6818 includedir=${includedir}
6819
6820 Name: $name
6821 Description: $comment
6822 Version: $version
6823 Requires: $requires
6824 Conflicts:
6825 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6826 Cflags: -I\${includedir}
6827 EOF
6828 }
6829
6830 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6831 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6832 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6833 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6834 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6835 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6836 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6837 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6838 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"