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 dxva2_extralibs="-luser32"
2544 vaapi_deps="va_va_h"
2545 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2546 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2547 vda_deps="vda_framework pthreads"
2548 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2549 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2550 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2551 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2552 xvmc_deps="X11_extensions_XvMClib_h"
2553
2554 h263_vaapi_hwaccel_deps="vaapi"
2555 h263_vaapi_hwaccel_select="h263_decoder"
2556 h263_videotoolbox_hwaccel_deps="videotoolbox"
2557 h263_videotoolbox_hwaccel_select="h263_decoder"
2558 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2559 h264_cuvid_hwaccel_deps="cuda cuvid"
2560 h264_d3d11va_hwaccel_deps="d3d11va"
2561 h264_d3d11va_hwaccel_select="h264_decoder"
2562 h264_dxva2_hwaccel_deps="dxva2"
2563 h264_dxva2_hwaccel_select="h264_decoder"
2564 h264_mediacodec_decoder_deps="mediacodec"
2565 h264_mediacodec_hwaccel_deps="mediacodec"
2566 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2567 h264_mmal_decoder_deps="mmal"
2568 h264_mmal_decoder_select="mmal"
2569 h264_mmal_hwaccel_deps="mmal"
2570 h264_omx_encoder_deps="omx"
2571 h264_qsv_hwaccel_deps="libmfx"
2572 h264_vaapi_hwaccel_deps="vaapi"
2573 h264_vaapi_hwaccel_select="h264_decoder"
2574 h264_vda_decoder_deps="vda"
2575 h264_vda_decoder_select="h264_decoder"
2576 h264_vda_hwaccel_deps="vda"
2577 h264_vda_hwaccel_select="h264_decoder"
2578 h264_vda_old_hwaccel_deps="vda"
2579 h264_vda_old_hwaccel_select="h264_decoder"
2580 h264_vdpau_decoder_deps="vdpau"
2581 h264_vdpau_decoder_select="h264_decoder"
2582 h264_vdpau_hwaccel_deps="vdpau"
2583 h264_vdpau_hwaccel_select="h264_decoder"
2584 h264_videotoolbox_hwaccel_deps="videotoolbox"
2585 h264_videotoolbox_hwaccel_select="h264_decoder"
2586 hevc_cuvid_hwaccel_deps="cuda cuvid"
2587 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2588 hevc_d3d11va_hwaccel_select="hevc_decoder"
2589 hevc_mediacodec_decoder_deps="mediacodec"
2590 hevc_mediacodec_hwaccel_deps="mediacodec"
2591 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2592 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2593 hevc_dxva2_hwaccel_select="hevc_decoder"
2594 hevc_qsv_hwaccel_deps="libmfx"
2595 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2596 hevc_vaapi_hwaccel_select="hevc_decoder"
2597 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2598 hevc_vdpau_hwaccel_select="hevc_decoder"
2599 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2600 mpeg_vdpau_decoder_deps="vdpau"
2601 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2602 mpeg_xvmc_hwaccel_deps="xvmc"
2603 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2604 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2605 mpeg1_vdpau_decoder_deps="vdpau"
2606 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2607 mpeg1_vdpau_hwaccel_deps="vdpau"
2608 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2609 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2610 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2611 mpeg1_xvmc_hwaccel_deps="xvmc"
2612 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2613 mpeg2_crystalhd_decoder_select="crystalhd"
2614 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2615 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2616 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2617 mpeg2_dxva2_hwaccel_deps="dxva2"
2618 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2619 mpeg2_mmal_decoder_deps="mmal"
2620 mpeg2_mmal_decoder_select="mmal"
2621 mpeg2_mmal_hwaccel_deps="mmal"
2622 mpeg2_qsv_hwaccel_deps="libmfx"
2623 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2624 mpeg2_vaapi_hwaccel_deps="vaapi"
2625 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2626 mpeg2_vdpau_hwaccel_deps="vdpau"
2627 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2628 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2629 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2630 mpeg2_xvmc_hwaccel_deps="xvmc"
2631 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2632 mpeg4_crystalhd_decoder_select="crystalhd"
2633 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2634 mpeg4_mediacodec_decoder_deps="mediacodec"
2635 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2636 mpeg4_mmal_decoder_deps="mmal"
2637 mpeg4_mmal_decoder_select="mmal"
2638 mpeg4_mmal_hwaccel_deps="mmal"
2639 mpeg4_omx_encoder_deps="omx"
2640 mpeg4_vaapi_hwaccel_deps="vaapi"
2641 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2642 mpeg4_vdpau_decoder_deps="vdpau"
2643 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2644 mpeg4_vdpau_hwaccel_deps="vdpau"
2645 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2646 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2647 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2648 msmpeg4_crystalhd_decoder_select="crystalhd"
2649 vc1_crystalhd_decoder_select="crystalhd"
2650 vc1_cuvid_hwaccel_deps="cuda cuvid"
2651 vc1_d3d11va_hwaccel_deps="d3d11va"
2652 vc1_d3d11va_hwaccel_select="vc1_decoder"
2653 vc1_dxva2_hwaccel_deps="dxva2"
2654 vc1_dxva2_hwaccel_select="vc1_decoder"
2655 vc1_mmal_decoder_deps="mmal"
2656 vc1_mmal_decoder_select="mmal"
2657 vc1_mmal_hwaccel_deps="mmal"
2658 vc1_qsv_hwaccel_deps="libmfx"
2659 vc1_qsv_hwaccel_select="qsvdec_vc1"
2660 vc1_vaapi_hwaccel_deps="vaapi"
2661 vc1_vaapi_hwaccel_select="vc1_decoder"
2662 vc1_vdpau_decoder_deps="vdpau"
2663 vc1_vdpau_decoder_select="vc1_decoder"
2664 vc1_vdpau_hwaccel_deps="vdpau"
2665 vc1_vdpau_hwaccel_select="vc1_decoder"
2666 vp8_cuvid_hwaccel_deps="cuda cuvid"
2667 vp9_cuvid_hwaccel_deps="cuda cuvid"
2668 vp8_mediacodec_decoder_deps="mediacodec"
2669 vp8_mediacodec_hwaccel_deps="mediacodec"
2670 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2671 vp9_d3d11va_hwaccel_select="vp9_decoder"
2672 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2673 vp9_dxva2_hwaccel_select="vp9_decoder"
2674 vp9_mediacodec_decoder_deps="mediacodec"
2675 vp9_mediacodec_hwaccel_deps="mediacodec"
2676 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2677 vp9_vaapi_hwaccel_select="vp9_decoder"
2678 wmv3_crystalhd_decoder_select="crystalhd"
2679 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2680 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2681 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2682 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2683 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2684
2685 # hardware-accelerated codecs
2686 omx_deps="dlopen pthreads"
2687 omx_extralibs='$ldl'
2688 qsvdec_select="qsv"
2689 qsvenc_select="qsv"
2690 vaapi_encode_deps="vaapi"
2691
2692 hwupload_cuda_filter_deps="cuda"
2693 scale_npp_filter_deps="cuda libnpp"
2694
2695 nvenc_deps_any="dlopen LoadLibrary"
2696 nvenc_encoder_deps="nvenc"
2697 h264_cuvid_decoder_deps="cuda cuvid"
2698 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2699 h264_nvenc_encoder_deps="nvenc"
2700 h264_qsv_decoder_deps="libmfx"
2701 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2702 h264_qsv_encoder_deps="libmfx"
2703 h264_qsv_encoder_select="qsvenc"
2704 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2705 h264_vaapi_encoder_select="vaapi_encode golomb"
2706
2707 hevc_cuvid_decoder_deps="cuda cuvid"
2708 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2709 hevc_nvenc_encoder_deps="nvenc"
2710 hevc_qsv_decoder_deps="libmfx"
2711 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2712 hevc_qsv_encoder_deps="libmfx"
2713 hevc_qsv_encoder_select="qsvenc"
2714 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2715 hevc_vaapi_encoder_select="vaapi_encode golomb"
2716 mjpeg_cuvid_decoder_deps="cuda cuvid"
2717 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2718 mpeg1_cuvid_decoder_deps="cuda cuvid"
2719 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2720 mpeg2_cuvid_decoder_deps="cuda cuvid"
2721 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2722 mpeg2_qsv_decoder_deps="libmfx"
2723 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2724 mpeg2_qsv_encoder_deps="libmfx"
2725 mpeg2_qsv_encoder_select="qsvenc"
2726 mpeg4_cuvid_decoder_deps="cuda cuvid"
2727 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2728 nvenc_h264_encoder_deps="nvenc"
2729 nvenc_hevc_encoder_deps="nvenc"
2730
2731 vc1_cuvid_decoder_deps="cuda cuvid"
2732 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2733 vp8_cuvid_decoder_deps="cuda cuvid"
2734 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2735 vp9_cuvid_decoder_deps="cuda cuvid"
2736 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2737
2738 # parsers
2739 h264_parser_select="golomb h264dsp h264parse"
2740 hevc_parser_select="golomb"
2741 mpegvideo_parser_select="mpegvideo"
2742 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2743 vc1_parser_select="vc1dsp"
2744
2745 # bitstream_filters
2746 mjpeg2jpeg_bsf_select="jpegtables"
2747
2748 # external libraries
2749 aac_at_decoder_deps="audiotoolbox"
2750 ac3_at_decoder_deps="audiotoolbox"
2751 ac3_at_decoder_select="ac3_parser"
2752 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2753 alac_at_decoder_deps="audiotoolbox"
2754 amr_nb_at_decoder_deps="audiotoolbox"
2755 avisynth_deps_any="dlopen LoadLibrary"
2756 avisynth_demuxer_deps="avisynth"
2757 avisynth_demuxer_select="riffdec"
2758 eac3_at_decoder_deps="audiotoolbox"
2759 eac3_at_decoder_select="ac3_parser"
2760 gsm_ms_at_decoder_deps="audiotoolbox"
2761 ilbc_at_decoder_deps="audiotoolbox"
2762 mp1_at_decoder_deps="audiotoolbox"
2763 mp2_at_decoder_deps="audiotoolbox"
2764 mp3_at_decoder_deps="audiotoolbox"
2765 pcm_alaw_at_decoder_deps="audiotoolbox"
2766 pcm_mulaw_at_decoder_deps="audiotoolbox"
2767 qdmc_at_decoder_deps="audiotoolbox"
2768 qdm2_at_decoder_deps="audiotoolbox"
2769 aac_at_encoder_deps="audiotoolbox"
2770 aac_at_encoder_select="audio_frame_queue"
2771 alac_at_encoder_deps="audiotoolbox"
2772 alac_at_encoder_select="audio_frame_queue"
2773 ilbc_at_encoder_deps="audiotoolbox"
2774 ilbc_at_encoder_select="audio_frame_queue"
2775 pcm_alaw_at_encoder_deps="audiotoolbox"
2776 pcm_alaw_at_encoder_select="audio_frame_queue"
2777 pcm_mulaw_at_encoder_deps="audiotoolbox"
2778 pcm_mulaw_at_encoder_select="audio_frame_queue"
2779 chromaprint_muxer_deps="chromaprint"
2780 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2781 libcelt_decoder_deps="libcelt"
2782 libfdk_aac_decoder_deps="libfdk_aac"
2783 libfdk_aac_encoder_deps="libfdk_aac"
2784 libfdk_aac_encoder_select="audio_frame_queue"
2785 libgme_demuxer_deps="libgme"
2786 libgsm_decoder_deps="libgsm"
2787 libgsm_encoder_deps="libgsm"
2788 libgsm_ms_decoder_deps="libgsm"
2789 libgsm_ms_encoder_deps="libgsm"
2790 libilbc_decoder_deps="libilbc"
2791 libilbc_encoder_deps="libilbc"
2792 libkvazaar_encoder_deps="libkvazaar"
2793 libmodplug_demuxer_deps="libmodplug"
2794 libmp3lame_encoder_deps="libmp3lame"
2795 libmp3lame_encoder_select="audio_frame_queue"
2796 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2797 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2798 libopencore_amrnb_encoder_select="audio_frame_queue"
2799 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2800 libopenh264_decoder_deps="libopenh264"
2801 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2802 libopenh264_encoder_deps="libopenh264"
2803 libopenjpeg_decoder_deps="libopenjpeg"
2804 libopenjpeg_encoder_deps="libopenjpeg"
2805 libopenmpt_demuxer_deps="libopenmpt"
2806 libopus_decoder_deps="libopus"
2807 libopus_encoder_deps="libopus"
2808 libopus_encoder_select="audio_frame_queue"
2809 libschroedinger_decoder_deps="libschroedinger"
2810 libschroedinger_encoder_deps="libschroedinger"
2811 libshine_encoder_deps="libshine"
2812 libshine_encoder_select="audio_frame_queue"
2813 libspeex_decoder_deps="libspeex"
2814 libspeex_encoder_deps="libspeex"
2815 libspeex_encoder_select="audio_frame_queue"
2816 libtheora_encoder_deps="libtheora"
2817 libtwolame_encoder_deps="libtwolame"
2818 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2819 libvorbis_decoder_deps="libvorbis"
2820 libvorbis_encoder_deps="libvorbis"
2821 libvorbis_encoder_select="audio_frame_queue"
2822 libvpx_vp8_decoder_deps="libvpx"
2823 libvpx_vp8_encoder_deps="libvpx"
2824 libvpx_vp9_decoder_deps="libvpx"
2825 libvpx_vp9_encoder_deps="libvpx"
2826 libwavpack_encoder_deps="libwavpack"
2827 libwebp_encoder_deps="libwebp"
2828 libwebp_anim_encoder_deps="libwebp"
2829 libx262_encoder_deps="libx262"
2830 libx264_encoder_deps="libx264"
2831 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2832 libx264rgb_encoder_select="libx264_encoder"
2833 libx265_encoder_deps="libx265"
2834 libxavs_encoder_deps="libxavs"
2835 libxvid_encoder_deps="libxvid"
2836 libzvbi_teletext_decoder_deps="libzvbi"
2837 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2838 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2839 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2840 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2841 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2842
2843 # demuxers / muxers
2844 ac3_demuxer_select="ac3_parser"
2845 asf_demuxer_select="riffdec"
2846 asf_o_demuxer_select="riffdec"
2847 asf_muxer_select="riffenc"
2848 asf_stream_muxer_select="asf_muxer"
2849 avi_demuxer_select="iso_media riffdec exif"
2850 avi_muxer_select="riffenc"
2851 caf_demuxer_select="iso_media riffdec"
2852 dash_muxer_select="mp4_muxer"
2853 dirac_demuxer_select="dirac_parser"
2854 dts_demuxer_select="dca_parser"
2855 dtshd_demuxer_select="dca_parser"
2856 dv_demuxer_select="dvprofile"
2857 dv_muxer_select="dvprofile"
2858 dxa_demuxer_select="riffdec"
2859 eac3_demuxer_select="ac3_parser"
2860 f4v_muxer_select="mov_muxer"
2861 fifo_muxer_deps="threads"
2862 flac_demuxer_select="flac_parser"
2863 hds_muxer_select="flv_muxer"
2864 hls_muxer_select="mpegts_muxer"
2865 image2_alias_pix_demuxer_select="image2_demuxer"
2866 image2_brender_pix_demuxer_select="image2_demuxer"
2867 ipod_muxer_select="mov_muxer"
2868 ismv_muxer_select="mov_muxer"
2869 libnut_demuxer_deps="libnut"
2870 libnut_muxer_deps="libnut"
2871 matroska_audio_muxer_select="matroska_muxer"
2872 matroska_demuxer_select="iso_media riffdec"
2873 matroska_demuxer_suggest="bzlib lzo zlib"
2874 matroska_muxer_select="iso_media riffenc"
2875 mmf_muxer_select="riffenc"
2876 mov_demuxer_select="iso_media riffdec"
2877 mov_demuxer_suggest="zlib"
2878 mov_muxer_select="iso_media riffenc rtpenc_chain"
2879 mp3_demuxer_select="mpegaudio_parser"
2880 mp4_muxer_select="mov_muxer"
2881 mpegts_demuxer_select="iso_media"
2882 mpegts_muxer_select="adts_muxer latm_muxer"
2883 mpegtsraw_demuxer_select="mpegts_demuxer"
2884 mxf_d10_muxer_select="mxf_muxer"
2885 mxf_opatom_muxer_select="mxf_muxer"
2886 nut_muxer_select="riffenc"
2887 nuv_demuxer_select="riffdec"
2888 oga_muxer_select="ogg_muxer"
2889 ogg_demuxer_select="dirac_parse"
2890 ogv_muxer_select="ogg_muxer"
2891 opus_muxer_select="ogg_muxer"
2892 psp_muxer_select="mov_muxer"
2893 rtp_demuxer_select="sdp_demuxer"
2894 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2895 rtsp_demuxer_select="http_protocol rtpdec"
2896 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2897 sap_demuxer_select="sdp_demuxer"
2898 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2899 sdp_demuxer_select="rtpdec"
2900 smoothstreaming_muxer_select="ismv_muxer"
2901 spdif_muxer_select="aac_parser"
2902 spx_muxer_select="ogg_muxer"
2903 swf_demuxer_suggest="zlib"
2904 tak_demuxer_select="tak_parser"
2905 tg2_muxer_select="mov_muxer"
2906 tgp_muxer_select="mov_muxer"
2907 vobsub_demuxer_select="mpegps_demuxer"
2908 w64_demuxer_select="wav_demuxer"
2909 w64_muxer_select="wav_muxer"
2910 wav_demuxer_select="riffdec"
2911 wav_muxer_select="riffenc"
2912 webm_muxer_select="iso_media riffenc"
2913 webm_dash_manifest_demuxer_select="matroska_demuxer"
2914 wtv_demuxer_select="mpegts_demuxer riffdec"
2915 wtv_muxer_select="mpegts_muxer riffenc"
2916 xmv_demuxer_select="riffdec"
2917 xwma_demuxer_select="riffdec"
2918
2919 # indevs / outdevs
2920 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2921 alsa_outdev_deps="alsa_asoundlib_h"
2922 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2923 avfoundation_indev_select="avfoundation"
2924 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2925 caca_outdev_deps="libcaca"
2926 decklink_indev_deps="decklink pthreads"
2927 decklink_indev_extralibs="-lstdc++"
2928 decklink_outdev_deps="decklink pthreads"
2929 decklink_outdev_extralibs="-lstdc++"
2930 dshow_indev_deps="IBaseFilter"
2931 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2932 dv1394_indev_deps="dv1394"
2933 dv1394_indev_select="dv_demuxer"
2934 fbdev_indev_deps="linux_fb_h"
2935 fbdev_outdev_deps="linux_fb_h"
2936 gdigrab_indev_deps="CreateDIBSection"
2937 gdigrab_indev_extralibs="-lgdi32"
2938 gdigrab_indev_select="bmp_decoder"
2939 iec61883_indev_deps="libiec61883"
2940 jack_indev_deps="jack_jack_h"
2941 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2942 lavfi_indev_deps="avfilter"
2943 libcdio_indev_deps="libcdio"
2944 libdc1394_indev_deps="libdc1394"
2945 libv4l2_indev_deps="libv4l2"
2946 openal_indev_deps="openal"
2947 opengl_outdev_deps="opengl"
2948 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2949 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2950 pulse_indev_deps="libpulse"
2951 pulse_outdev_deps="libpulse"
2952 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2953 qtkit_indev_select="qtkit"
2954 sdl2_outdev_deps="sdl2"
2955 sndio_indev_deps="sndio_h"
2956 sndio_outdev_deps="sndio_h"
2957 v4l_indev_deps="linux_videodev_h"
2958 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2959 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2960 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2961 vfwcap_indev_extralibs="-lavicap32"
2962 x11grab_indev_deps="x11grab"
2963 x11grab_xcb_indev_deps="libxcb"
2964 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2965 xv_outdev_extralibs="-lXv -lX11 -lXext"
2966
2967 # protocols
2968 async_protocol_deps="threads"
2969 bluray_protocol_deps="libbluray"
2970 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2971 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2972 ffrtmpcrypt_protocol_select="tcp_protocol"
2973 ffrtmphttp_protocol_deps="!librtmp_protocol"
2974 ffrtmphttp_protocol_select="http_protocol"
2975 ftp_protocol_select="tcp_protocol"
2976 gopher_protocol_select="network"
2977 http_protocol_select="tcp_protocol"
2978 httpproxy_protocol_select="tcp_protocol"
2979 https_protocol_select="tls_protocol"
2980 icecast_protocol_select="http_protocol"
2981 librtmp_protocol_deps="librtmp"
2982 librtmpe_protocol_deps="librtmp"
2983 librtmps_protocol_deps="librtmp"
2984 librtmpt_protocol_deps="librtmp"
2985 librtmpte_protocol_deps="librtmp"
2986 libsmbclient_protocol_deps="libsmbclient gplv3"
2987 libssh_protocol_deps="libssh"
2988 mmsh_protocol_select="http_protocol"
2989 mmst_protocol_select="network"
2990 rtmp_protocol_deps="!librtmp_protocol"
2991 rtmp_protocol_select="tcp_protocol"
2992 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2993 rtmps_protocol_deps="!librtmp_protocol"
2994 rtmps_protocol_select="tls_protocol"
2995 rtmpt_protocol_select="ffrtmphttp_protocol"
2996 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2997 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2998 rtp_protocol_select="udp_protocol"
2999 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3000 sctp_protocol_select="network"
3001 srtp_protocol_select="rtp_protocol srtp"
3002 tcp_protocol_select="network"
3003 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3004 tls_gnutls_protocol_select="tcp_protocol"
3005 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3006 tls_openssl_protocol_select="tcp_protocol"
3007 tls_schannel_protocol_deps="schannel"
3008 tls_schannel_protocol_select="tcp_protocol"
3009 tls_securetransport_protocol_deps="securetransport"
3010 tls_securetransport_protocol_select="tcp_protocol"
3011 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3012 udp_protocol_select="network"
3013 udplite_protocol_select="network"
3014 unix_protocol_deps="sys_un_h"
3015 unix_protocol_select="network"
3016
3017 # filters
3018 afftfilt_filter_deps="avcodec"
3019 afftfilt_filter_select="fft"
3020 amovie_filter_deps="avcodec avformat"
3021 aresample_filter_deps="swresample"
3022 ass_filter_deps="libass"
3023 asyncts_filter_deps="avresample"
3024 atempo_filter_deps="avcodec"
3025 atempo_filter_select="rdft"
3026 azmq_filter_deps="libzmq"
3027 blackframe_filter_deps="gpl"
3028 boxblur_filter_deps="gpl"
3029 bs2b_filter_deps="libbs2b"
3030 colormatrix_filter_deps="gpl"
3031 cover_rect_filter_deps="avcodec avformat gpl"
3032 cropdetect_filter_deps="gpl"
3033 delogo_filter_deps="gpl"
3034 deshake_filter_select="pixelutils"
3035 drawtext_filter_deps="libfreetype"
3036 ebur128_filter_deps="gpl"
3037 eq_filter_deps="gpl"
3038 fftfilt_filter_deps="avcodec"
3039 fftfilt_filter_select="rdft"
3040 find_rect_filter_deps="avcodec avformat gpl"
3041 firequalizer_filter_deps="avcodec"
3042 firequalizer_filter_select="rdft"
3043 flite_filter_deps="libflite"
3044 framerate_filter_select="pixelutils"
3045 frei0r_filter_deps="frei0r dlopen"
3046 frei0r_src_filter_deps="frei0r dlopen"
3047 fspp_filter_deps="gpl"
3048 geq_filter_deps="gpl"
3049 histeq_filter_deps="gpl"
3050 hqdn3d_filter_deps="gpl"
3051 interlace_filter_deps="gpl"
3052 kerndeint_filter_deps="gpl"
3053 ladspa_filter_deps="ladspa dlopen"
3054 mcdeint_filter_deps="avcodec gpl"
3055 movie_filter_deps="avcodec avformat"
3056 mpdecimate_filter_deps="gpl"
3057 mpdecimate_filter_select="pixelutils"
3058 mptestsrc_filter_deps="gpl"
3059 negate_filter_deps="lut_filter"
3060 nnedi_filter_deps="gpl"
3061 ocr_filter_deps="libtesseract"
3062 ocv_filter_deps="libopencv"
3063 owdenoise_filter_deps="gpl"
3064 pan_filter_deps="swresample"
3065 perspective_filter_deps="gpl"
3066 phase_filter_deps="gpl"
3067 pp7_filter_deps="gpl"
3068 pp_filter_deps="gpl postproc"
3069 pullup_filter_deps="gpl"
3070 removelogo_filter_deps="avcodec avformat swscale"
3071 repeatfields_filter_deps="gpl"
3072 resample_filter_deps="avresample"
3073 rubberband_filter_deps="librubberband"
3074 sab_filter_deps="gpl swscale"
3075 scale2ref_filter_deps="swscale"
3076 scale_filter_deps="swscale"
3077 select_filter_select="pixelutils"
3078 showcqt_filter_deps="avcodec avformat swscale"
3079 showcqt_filter_select="fft"
3080 showfreqs_filter_deps="avcodec"
3081 showfreqs_filter_select="fft"
3082 showspectrum_filter_deps="avcodec"
3083 showspectrum_filter_select="fft"
3084 showspectrumpic_filter_deps="avcodec"
3085 showspectrumpic_filter_select="fft"
3086 smartblur_filter_deps="gpl swscale"
3087 sofalizer_filter_deps="netcdf avcodec"
3088 sofalizer_filter_select="fft"
3089 spectrumsynth_filter_deps="avcodec"
3090 spectrumsynth_filter_select="fft"
3091 spp_filter_deps="gpl avcodec"
3092 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3093 stereo3d_filter_deps="gpl"
3094 subtitles_filter_deps="avformat avcodec libass"
3095 super2xsai_filter_deps="gpl"
3096 pixfmts_super2xsai_test_deps="super2xsai_filter"
3097 tinterlace_filter_deps="gpl"
3098 tinterlace_merge_test_deps="tinterlace_filter"
3099 tinterlace_pad_test_deps="tinterlace_filter"
3100 uspp_filter_deps="gpl avcodec"
3101 vaguedenoiser_filter_deps="gpl"
3102 vidstabdetect_filter_deps="libvidstab"
3103 vidstabtransform_filter_deps="libvidstab"
3104 zmq_filter_deps="libzmq"
3105 zoompan_filter_deps="swscale"
3106 zscale_filter_deps="libzimg"
3107 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3108
3109 # examples
3110 avio_dir_cmd_deps="avformat avutil"
3111 avio_reading_deps="avformat avcodec avutil"
3112 decoding_encoding_example_deps="avcodec avformat avutil"
3113 demuxing_decoding_example_deps="avcodec avformat avutil"
3114 extract_mvs_example_deps="avcodec avformat avutil"
3115 filter_audio_example_deps="avfilter avutil"
3116 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3117 filtering_video_example_deps="avfilter avcodec avformat avutil"
3118 http_multiclient_example_deps="avformat avutil fork"
3119 metadata_example_deps="avformat avutil"
3120 muxing_example_deps="avcodec avformat avutil swscale"
3121 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3122 remuxing_example_deps="avcodec avformat avutil"
3123 resampling_audio_example_deps="avutil swresample"
3124 scaling_video_example_deps="avutil swscale"
3125 transcode_aac_example_deps="avcodec avformat swresample"
3126 transcoding_example_deps="avfilter avcodec avformat avutil"
3127
3128 # libraries, in linking order
3129 avcodec_deps="avutil"
3130 avdevice_deps="avformat avcodec avutil"
3131 avfilter_deps="avutil"
3132 avformat_deps="avcodec avutil"
3133 avresample_deps="avutil"
3134 postproc_deps="avutil gpl"
3135 swresample_deps="avutil"
3136 swscale_deps="avutil"
3137
3138 # programs
3139 ffmpeg_deps="avcodec avfilter avformat swresample"
3140 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3141                null_filter
3142                setpts_filter trim_filter"
3143 ffplay_deps="avcodec avformat swscale swresample sdl2"
3144 ffplay_libs='$sdl2_libs'
3145 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3146 ffprobe_deps="avcodec avformat"
3147 ffserver_deps="avformat fork sarestart"
3148 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3149
3150 # documentation
3151 podpages_deps="perl"
3152 manpages_deps="perl pod2man"
3153 htmlpages_deps="perl"
3154 htmlpages_deps_any="makeinfo_html texi2html"
3155 txtpages_deps="perl makeinfo"
3156 doc_deps_any="manpages htmlpages podpages txtpages"
3157
3158 # default parameters
3159
3160 logfile="config.log"
3161
3162 # installation paths
3163 prefix_default="/usr/local"
3164 bindir_default='${prefix}/bin'
3165 datadir_default='${prefix}/share/ffmpeg'
3166 docdir_default='${prefix}/share/doc/ffmpeg'
3167 incdir_default='${prefix}/include'
3168 libdir_default='${prefix}/lib'
3169 mandir_default='${prefix}/share/man'
3170
3171 # toolchain
3172 ar_default="ar"
3173 cc_default="gcc"
3174 cxx_default="g++"
3175 host_cc_default="gcc"
3176 cp_f="cp -f"
3177 doxygen_default="doxygen"
3178 install="install"
3179 ln_s_default="ln -s -f"
3180 nm_default="nm -g"
3181 objformat="elf"
3182 pkg_config_default=pkg-config
3183 ranlib_default="ranlib"
3184 strip_default="strip"
3185 version_script='--version-script'
3186 yasmexe_default="yasm"
3187 windres_default="windres"
3188
3189 # OS
3190 target_os_default=$(tolower $(uname -s))
3191 host_os=$target_os_default
3192
3193 # machine
3194 if test "$target_os_default" = aix; then
3195     arch_default=$(uname -p)
3196     strip_default="strip -X32_64"
3197 else
3198     arch_default=$(uname -m)
3199 fi
3200 cpu="generic"
3201 intrinsics="none"
3202
3203 # configurable options
3204 enable $PROGRAM_LIST
3205 enable $DOCUMENT_LIST
3206 enable $EXAMPLE_LIST
3207 enable $(filter_out avresample $LIBRARY_LIST)
3208 enable stripping
3209
3210 enable asm
3211 enable debug
3212 enable doc
3213 enable faan faandct faanidct
3214 enable optimizations
3215 enable runtime_cpudetect
3216 enable safe_bitstream_reader
3217 enable static
3218 enable swscale_alpha
3219 enable valgrind_backtrace
3220
3221 sws_max_filter_size_default=256
3222 set_default sws_max_filter_size
3223
3224 # Enable platform codecs by default.
3225 enable audiotoolbox
3226
3227 # Enable hwaccels by default.
3228 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3229 enable xlib
3230
3231 enable nvenc vda_framework videotoolbox videotoolbox_encoder
3232
3233 # build settings
3234 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3235 LIBPREF="lib"
3236 LIBSUF=".a"
3237 FULLNAME='$(NAME)$(BUILDSUF)'
3238 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3239 SLIBPREF="lib"
3240 SLIBSUF=".so"
3241 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3242 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3243 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3244 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3245 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3246 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3247 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3248
3249 asflags_filter=echo
3250 cflags_filter=echo
3251 ldflags_filter=echo
3252
3253 AS_C='-c'
3254 AS_O='-o $@'
3255 CC_C='-c'
3256 CC_E='-E -o $@'
3257 CC_O='-o $@'
3258 CXX_C='-c'
3259 CXX_O='-o $@'
3260 OBJCC_C='-c'
3261 OBJCC_E='-E -o $@'
3262 OBJCC_O='-o $@'
3263 LD_O='-o $@'
3264 LD_LIB='-l%'
3265 LD_PATH='-L'
3266 HOSTCC_C='-c'
3267 HOSTCC_E='-E -o $@'
3268 HOSTCC_O='-o $@'
3269 HOSTLD_O='-o $@'
3270
3271 host_libs='-lm'
3272 host_cflags_filter=echo
3273 host_ldflags_filter=echo
3274
3275 target_path='$(CURDIR)'
3276
3277 # since the object filename is not given with the -MM flag, the compiler
3278 # is only able to print the basename, and we must add the path ourselves
3279 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3280 DEPFLAGS='-MM'
3281
3282 # find source path
3283 if test -f configure; then
3284     source_path=.
3285 else
3286     source_path=$(cd $(dirname "$0"); pwd)
3287     case "$source_path" in
3288         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3289     esac
3290     test -e "$source_path/config.h" &&
3291         die "Out of tree builds are impossible with config.h in source dir."
3292 fi
3293
3294 for v in "$@"; do
3295     r=${v#*=}
3296     l=${v%"$r"}
3297     r=$(sh_quote "$r")
3298     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3299 done
3300
3301 find_things(){
3302     thing=$1
3303     pattern=$2
3304     file=$source_path/$3
3305     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3306 }
3307
3308 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3309 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3310 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3311 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3312 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3313 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3314 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3315 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3316 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3317
3318 find_things_extern(){
3319     thing=$1
3320     pattern=$2
3321     file=$source_path/$3
3322     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3323 }
3324
3325 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3326 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3327
3328 ALL_COMPONENTS="
3329     $BSF_LIST
3330     $DECODER_LIST
3331     $DEMUXER_LIST
3332     $ENCODER_LIST
3333     $FILTER_LIST
3334     $HWACCEL_LIST
3335     $INDEV_LIST
3336     $MUXER_LIST
3337     $OUTDEV_LIST
3338     $PARSER_LIST
3339     $PROTOCOL_LIST
3340 "
3341
3342 for n in $COMPONENT_LIST; do
3343     v=$(toupper ${n%s})_LIST
3344     eval enable \$$v
3345     eval ${n}_if_any="\$$v"
3346 done
3347
3348 enable $ARCH_EXT_LIST
3349
3350 die_unknown(){
3351     echo "Unknown option \"$1\"."
3352     echo "See $0 --help for available options."
3353     exit 1
3354 }
3355
3356 print_in_columns() {
3357     cols=$(expr $ncols / 24)
3358     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3359 }
3360
3361 show_list() {
3362     suffix=_$1
3363     shift
3364     echo $* | sed s/$suffix//g | print_in_columns
3365     exit 0
3366 }
3367
3368 rand_list(){
3369     IFS=', '
3370     set -- $*
3371     unset IFS
3372     for thing; do
3373         comp=${thing%:*}
3374         prob=${thing#$comp}
3375         prob=${prob#:}
3376         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3377         echo "prob ${prob:-0.5}"
3378         printf '%s\n' $comp
3379     done
3380 }
3381
3382 do_random(){
3383     action=$1
3384     shift
3385     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3386     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3387 }
3388
3389 for opt do
3390     optval="${opt#*=}"
3391     case "$opt" in
3392         --extra-ldflags=*)
3393             add_ldflags $optval
3394         ;;
3395         --extra-ldexeflags=*)
3396             add_ldexeflags $optval
3397         ;;
3398         --extra-ldlibflags=*)
3399             add_ldlibflags $optval
3400         ;;
3401         --extra-libs=*)
3402             add_extralibs $optval
3403         ;;
3404         --disable-devices)
3405             disable $INDEV_LIST $OUTDEV_LIST
3406         ;;
3407         --enable-debug=*)
3408             debuglevel="$optval"
3409         ;;
3410         --disable-programs)
3411             disable $PROGRAM_LIST
3412         ;;
3413         --disable-everything)
3414             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3415         ;;
3416         --disable-all)
3417             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3418             disable $LIBRARY_LIST $PROGRAM_LIST doc
3419             enable avutil
3420         ;;
3421         --enable-random|--disable-random)
3422             action=${opt%%-random}
3423             do_random ${action#--} $COMPONENT_LIST
3424         ;;
3425         --enable-random=*|--disable-random=*)
3426             action=${opt%%-random=*}
3427             do_random ${action#--} $optval
3428         ;;
3429         --enable-*=*|--disable-*=*)
3430             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3431             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3432             eval list=\$$(toupper $thing)_LIST
3433             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3434             list=$(filter "$name" $list)
3435             [ "$list" = "" ] && warn "Option $opt did not match anything"
3436             $action $list
3437         ;;
3438         --enable-?*|--disable-?*)
3439             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3440             if is_in $option $COMPONENT_LIST; then
3441                 test $action = disable && action=unset
3442                 eval $action \$$(toupper ${option%s})_LIST
3443             elif is_in $option $CMDLINE_SELECT; then
3444                 $action $option
3445             else
3446                 die_unknown $opt
3447             fi
3448         ;;
3449         --list-*)
3450             NAME="${opt#--list-}"
3451             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3452             NAME=${NAME%s}
3453             eval show_list $NAME \$$(toupper $NAME)_LIST
3454         ;;
3455         --help|-h) show_help
3456         ;;
3457         --fatal-warnings) enable fatal_warnings
3458         ;;
3459         *)
3460             optname="${opt%%=*}"
3461             optname="${optname#--}"
3462             optname=$(echo "$optname" | sed 's/-/_/g')
3463             if is_in $optname $CMDLINE_SET; then
3464                 eval $optname='$optval'
3465             elif is_in $optname $CMDLINE_APPEND; then
3466                 append $optname "$optval"
3467             else
3468                 die_unknown $opt
3469             fi
3470         ;;
3471     esac
3472 done
3473
3474 for e in $env; do
3475     eval "export $e"
3476 done
3477
3478 disabled logging && logfile=/dev/null
3479
3480 # Disable all the library-specific components if the library itself
3481 # is disabled, see AVCODEC_LIST and following _LIST variables.
3482
3483 disable_components(){
3484     disabled ${1} && disable $(
3485         eval components="\$$(toupper ${1})_COMPONENTS"
3486         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3487     )
3488 }
3489
3490 map 'disable_components $v' $LIBRARY_LIST
3491
3492 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3493 set >> $logfile
3494
3495 test -n "$valgrind" && toolchain="valgrind-memcheck"
3496
3497 case "$toolchain" in
3498     *-asan)
3499         cc_default="${toolchain%-asan}"
3500         add_cflags  -fsanitize=address
3501         add_ldflags -fsanitize=address
3502     ;;
3503     *-msan)
3504         cc_default="${toolchain%-msan}"
3505         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3506         add_ldflags -fsanitize=memory
3507     ;;
3508     *-tsan)
3509         cc_default="${toolchain%-tsan}"
3510         add_cflags  -fsanitize=thread -pie
3511         add_ldflags -fsanitize=thread -pie
3512         case "$toolchain" in
3513             gcc-tsan)
3514                 add_cflags  -fPIC
3515                 add_ldflags -fPIC
3516                 ;;
3517         esac
3518     ;;
3519     *-usan)
3520         cc_default="${toolchain%-usan}"
3521         add_cflags  -fsanitize=undefined
3522         add_ldflags -fsanitize=undefined
3523     ;;
3524     valgrind-*)
3525         target_exec_default="valgrind"
3526         case "$toolchain" in
3527             valgrind-massif)
3528                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3529                 ;;
3530             valgrind-memcheck)
3531                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3532                 ;;
3533         esac
3534     ;;
3535     msvc)
3536         # Check whether the current MSVC version needs the C99 converter.
3537         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3538         # support enough of C99 to build ffmpeg. Default to the new
3539         # behaviour if the regexp was unable to match anything, since this
3540         # successfully parses the version number of existing supported
3541         # versions that require the converter (MSVC 2010 and 2012).
3542         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3543         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3544             cc_default="cl"
3545         else
3546             cc_default="c99wrap cl"
3547         fi
3548         ld_default="$source_path/compat/windows/mslink"
3549         nm_default="dumpbin -symbols"
3550         ar_default="lib"
3551         case "$arch" in
3552         arm*)
3553             as_default="armasm"
3554             ;;
3555         esac
3556         target_os_default="win32"
3557         # Use a relative path for TMPDIR. This makes sure all the
3558         # ffconf temp files are written with a relative path, avoiding
3559         # issues with msys/win32 path conversion for MSVC parameters
3560         # such as -Fo<file> or -out:<file>.
3561         TMPDIR=.
3562     ;;
3563     icl)
3564         cc_default="icl"
3565         ld_default="xilink"
3566         nm_default="dumpbin -symbols"
3567         ar_default="xilib"
3568         target_os_default="win32"
3569         TMPDIR=.
3570     ;;
3571     gcov)
3572         add_cflags  -fprofile-arcs -ftest-coverage
3573         add_ldflags -fprofile-arcs -ftest-coverage
3574     ;;
3575     llvm-cov)
3576         add_cflags -fprofile-arcs -ftest-coverage
3577         add_ldflags --coverage
3578     ;;
3579     hardened)
3580         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3581         add_cflags   -fno-strict-overflow -fstack-protector-all
3582         add_ldflags  -Wl,-z,relro -Wl,-z,now
3583         add_cflags   -fPIE
3584         add_ldexeflags -fPIE -pie
3585     ;;
3586     ?*)
3587         die "Unknown toolchain $toolchain"
3588     ;;
3589 esac
3590
3591 test -n "$cross_prefix" && enable cross_compile
3592
3593 if enabled cross_compile; then
3594     test -n "$arch" && test -n "$target_os" ||
3595         die "Must specify target arch and OS when cross-compiling"
3596 fi
3597
3598 ar_default="${cross_prefix}${ar_default}"
3599 cc_default="${cross_prefix}${cc_default}"
3600 cxx_default="${cross_prefix}${cxx_default}"
3601 nm_default="${cross_prefix}${nm_default}"
3602 pkg_config_default="${cross_prefix}${pkg_config_default}"
3603 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3604     ranlib_default="${cross_prefix}${ranlib_default} -D"
3605 else
3606     ranlib_default="${cross_prefix}${ranlib_default}"
3607 fi
3608 strip_default="${cross_prefix}${strip_default}"
3609 windres_default="${cross_prefix}${windres_default}"
3610
3611 sysinclude_default="${sysroot}/usr/include"
3612
3613 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3614     target_exec target_os yasmexe
3615 enabled cross_compile || host_cc_default=$cc
3616 set_default host_cc
3617
3618 pkg_config_fail_message=""
3619 if ! $pkg_config --version >/dev/null 2>&1; then
3620     warn "$pkg_config not found, library detection may fail."
3621     pkg_config=false
3622 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3623     pkg_config_fail_message="
3624 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3625 fi
3626
3627 if test $doxygen != $doxygen_default && \
3628   ! $doxygen --version >/dev/null 2>&1; then
3629     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3630 fi
3631
3632 exesuf() {
3633     case $1 in
3634         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3635     esac
3636 }
3637
3638 EXESUF=$(exesuf $target_os)
3639 HOSTEXESUF=$(exesuf $host_os)
3640
3641 # set temporary file name
3642 : ${TMPDIR:=$TEMPDIR}
3643 : ${TMPDIR:=$TMP}
3644 : ${TMPDIR:=/tmp}
3645
3646 if [ -n "$tempprefix" ] ; then
3647     mktemp(){
3648         echo $tempprefix.${HOSTNAME}.${UID}
3649     }
3650 elif ! check_cmd mktemp -u XXXXXX; then
3651     # simple replacement for missing mktemp
3652     # NOT SAFE FOR GENERAL USE
3653     mktemp(){
3654         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3655     }
3656 fi
3657
3658 tmpfile(){
3659     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3660         (set -C; exec > $tmp) 2>/dev/null ||
3661         die "Unable to create temporary file in $TMPDIR."
3662     append TMPFILES $tmp
3663     eval $1=$tmp
3664 }
3665
3666 trap 'rm -f -- $TMPFILES' EXIT
3667
3668 tmpfile TMPASM .asm
3669 tmpfile TMPC   .c
3670 tmpfile TMPCPP .cpp
3671 tmpfile TMPE   $EXESUF
3672 tmpfile TMPH   .h
3673 tmpfile TMPM   .m
3674 tmpfile TMPO   .o
3675 tmpfile TMPS   .S
3676 tmpfile TMPSH  .sh
3677 tmpfile TMPV   .ver
3678
3679 unset -f mktemp
3680
3681 chmod +x $TMPE
3682
3683 # make sure we can execute files in $TMPDIR
3684 cat > $TMPSH 2>> $logfile <<EOF
3685 #! /bin/sh
3686 EOF
3687 chmod +x $TMPSH >> $logfile 2>&1
3688 if ! $TMPSH >> $logfile 2>&1; then
3689     cat <<EOF
3690 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3691 variable to another directory and make sure that it is not mounted noexec.
3692 EOF
3693     die "Sanity test failed."
3694 fi
3695
3696 armasm_flags(){
3697     for flag; do
3698         case $flag in
3699             # Filter out MSVC cl.exe options from cflags that shouldn't
3700             # be passed to gas-preprocessor
3701             -M[TD]*)                                            ;;
3702             *)                  echo $flag                      ;;
3703         esac
3704    done
3705 }
3706
3707 ccc_flags(){
3708     for flag; do
3709         case $flag in
3710             -std=c99)           echo -c99                       ;;
3711             -mcpu=*)            echo -arch ${flag#*=}           ;;
3712             -mieee)             echo -ieee                      ;;
3713             -O*|-fast)          echo $flag                      ;;
3714             -fno-math-errno)    echo -assume nomath_errno       ;;
3715             -g)                 echo -g3                        ;;
3716             -Wall)              echo -msg_enable level2         ;;
3717             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3718             -Wl,*)              echo $flag                      ;;
3719             -f*|-W*)                                            ;;
3720             *)                  echo $flag                      ;;
3721         esac
3722    done
3723 }
3724
3725 cparser_flags(){
3726     for flag; do
3727         case $flag in
3728             -Wno-switch)             echo -Wno-switch-enum ;;
3729             -Wno-format-zero-length) ;;
3730             -Wdisabled-optimization) ;;
3731             -Wno-pointer-sign)       echo -Wno-other ;;
3732             *)                       echo $flag ;;
3733         esac
3734     done
3735 }
3736
3737 msvc_common_flags(){
3738     for flag; do
3739         case $flag in
3740             # In addition to specifying certain flags under the compiler
3741             # specific filters, they must be specified here as well or else the
3742             # generic catch all at the bottom will print the original flag.
3743             -Wall)                ;;
3744             -std=c99)             ;;
3745             # Common flags
3746             -fomit-frame-pointer) ;;
3747             -g)                   echo -Z7 ;;
3748             -fno-math-errno)      ;;
3749             -fno-common)          ;;
3750             -fno-signed-zeros)    ;;
3751             -fPIC)                ;;
3752             -mthumb)              ;;
3753             -march=*)             ;;
3754             -lz)                  echo zlib.lib ;;
3755             -lavifil32)           echo vfw32.lib ;;
3756             -lavicap32)           echo vfw32.lib user32.lib ;;
3757             -lx264)               echo libx264.lib ;;
3758             -l*)                  echo ${flag#-l}.lib ;;
3759             -LARGEADDRESSAWARE)   echo $flag ;;
3760             -L*)                  echo -libpath:${flag#-L} ;;
3761             *)                    echo $flag ;;
3762         esac
3763     done
3764 }
3765
3766 msvc_flags(){
3767     msvc_common_flags "$@"
3768     for flag; do
3769         case $flag in
3770             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3771                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3772                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3773                                        -wd4307 \
3774                                        -wd4273 -wd4554 -wd4701 ;;
3775         esac
3776     done
3777 }
3778
3779 icl_flags(){
3780     msvc_common_flags "$@"
3781     for flag; do
3782         case $flag in
3783             # Despite what Intel's documentation says -Wall, which is supported
3784             # on Windows, does enable remarks so disable them here.
3785             -Wall)                echo $flag -Qdiag-disable:remark ;;
3786             -std=c99)             echo -Qstd=c99 ;;
3787             -flto)                echo -ipo ;;
3788         esac
3789     done
3790 }
3791
3792 icc_flags(){
3793     for flag; do
3794         case $flag in
3795             -flto)                echo -ipo ;;
3796             *)                    echo $flag ;;
3797         esac
3798     done
3799 }
3800
3801 pgi_flags(){
3802     for flag; do
3803         case $flag in
3804             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3805             -fomit-frame-pointer) echo -Mnoframe ;;
3806             -g)                   echo -gopt ;;
3807             *)                    echo $flag ;;
3808         esac
3809     done
3810 }
3811
3812 suncc_flags(){
3813     for flag; do
3814         case $flag in
3815             -march=*|-mcpu=*)
3816                 case "${flag#*=}" in
3817                     native)                   echo -xtarget=native       ;;
3818                     v9|niagara)               echo -xarch=sparc          ;;
3819                     ultrasparc)               echo -xarch=sparcvis       ;;
3820                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3821                     i586|pentium)             echo -xchip=pentium        ;;
3822                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3823                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3824                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3825                     pentium4*)          echo -xtarget=pentium4           ;;
3826                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3827                     *-sse3)             echo -xarch=sse3                 ;;
3828                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3829                     bonnell)                   echo -xarch=ssse3         ;;
3830                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3831                     westmere)                  echo -xtarget=westmere    ;;
3832                     silvermont)                echo -xarch=sse4_2        ;;
3833                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3834                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3835                                                echo -xarch=avx           ;;
3836                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3837                     btver1)                    echo -xarch=amdsse4a      ;;
3838                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3839                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3840                     k8|opteron|athlon64|athlon-fx)
3841                                                echo -xarch=sse2a         ;;
3842                     athlon*)                   echo -xarch=pentium_proa  ;;
3843                 esac
3844                 ;;
3845             -std=c99)             echo -xc99              ;;
3846             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3847             -fPIC)                echo -KPIC -xcode=pic32 ;;
3848             -W*,*)                echo $flag              ;;
3849             -f*-*|-W*|-mimpure-text)                      ;;
3850             -shared)              echo -G                 ;;
3851             *)                    echo $flag              ;;
3852         esac
3853     done
3854 }
3855
3856 tms470_flags(){
3857     for flag; do
3858         case $flag in
3859             -march=*|-mcpu=*)
3860                 case "${flag#*=}" in
3861                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3862                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3863                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3864                     armv6*|arm11*)          echo -mv=6   ;;
3865                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3866                                             echo -mv=5e  ;;
3867                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3868                 esac
3869                 ;;
3870             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3871             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3872             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3873             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3874             -msoft-float)   echo --float_support=vfplib       ;;
3875             -O[0-3]|-mf=*)  echo $flag                        ;;
3876             -g)             echo -g -mn                       ;;
3877             -pds=*)         echo $flag                        ;;
3878             -D*|-I*)        echo $flag                        ;;
3879             --gcc|--abi=*)  echo $flag                        ;;
3880             -me)            echo $flag                        ;;
3881         esac
3882     done
3883 }
3884
3885 probe_cc(){
3886     pfx=$1
3887     _cc=$2
3888     first=$3
3889
3890     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3891     unset _ld_o _ldflags _ld_lib _ld_path
3892     unset _depflags _DEPCMD _DEPFLAGS
3893     _flags_filter=echo
3894
3895     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3896         true # no-op to avoid reading stdin in following checks
3897     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3898         _type=llvm_gcc
3899         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3900         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3901         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3902         _cflags_speed='-O3'
3903         _cflags_size='-Os'
3904     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3905         _type=gcc
3906         gcc_version=$($_cc --version | head -n1)
3907         gcc_basever=$($_cc -dumpversion)
3908         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3909         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3910         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3911         case $gcc_basever in
3912             2) ;;
3913             2.*) ;;
3914             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3915         esac
3916         if [ "$first" = true ]; then
3917             case $gcc_basever in
3918                 4.2*)
3919                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3920             esac
3921         fi
3922         _cflags_speed='-O3'
3923         _cflags_size='-Os'
3924     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3925         _type=icc
3926         _ident=$($_cc --version | head -n1)
3927         _depflags='-MMD'
3928         _cflags_speed='-O3'
3929         _cflags_size='-Os'
3930         _cflags_noopt='-O1'
3931         _flags_filter=icc_flags
3932     elif $_cc -v 2>&1 | grep -q xlc; then
3933         _type=xlc
3934         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3935         _cflags_speed='-O5'
3936         _cflags_size='-O5 -qcompact'
3937     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3938         _type=ccc
3939         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3940         _DEPFLAGS='-M'
3941         _cflags_speed='-fast'
3942         _cflags_size='-O1'
3943         _flags_filter=ccc_flags
3944     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3945         test -d "$sysroot" || die "No valid sysroot specified."
3946         _type=armcc
3947         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3948         armcc_conf="$PWD/armcc.conf"
3949         $_cc --arm_linux_configure                 \
3950              --arm_linux_config_file="$armcc_conf" \
3951              --configure_sysroot="$sysroot"        \
3952              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3953              die "Error creating armcc configuration file."
3954         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3955         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3956         as_default="${cross_prefix}gcc"
3957         _depflags='-MMD'
3958         _cflags_speed='-O3'
3959         _cflags_size='-Os'
3960     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3961         _type=tms470
3962         _ident=$($_cc -version | head -n1 | tr -s ' ')
3963         _flags='--gcc --abi=eabi -me'
3964         _cc_e='-ppl -fe=$@'
3965         _cc_o='-fe=$@'
3966         _depflags='-ppa -ppd=$(@:.o=.d)'
3967         _cflags_speed='-O3 -mf=5'
3968         _cflags_size='-O3 -mf=2'
3969         _flags_filter=tms470_flags
3970     elif $_cc -v 2>&1 | grep -q clang; then
3971         _type=clang
3972         _ident=$($_cc --version 2>/dev/null | head -n1)
3973         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3974         _cflags_speed='-O3'
3975         _cflags_size='-Os'
3976     elif $_cc -V 2>&1 | grep -q Sun; then
3977         _type=suncc
3978         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3979         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3980         _DEPFLAGS='-xM1 -xc99'
3981         _ldflags='-std=c99'
3982         _cflags_speed='-O5'
3983         _cflags_size='-O5 -xspace'
3984         _flags_filter=suncc_flags
3985     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3986         _type=pathscale
3987         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3988         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3989         _cflags_speed='-O2'
3990         _cflags_size='-Os'
3991         _flags_filter='filter_out -Wdisabled-optimization'
3992     elif $_cc -v 2>&1 | grep -q Open64; then
3993         _type=open64
3994         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3995         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3996         _cflags_speed='-O2'
3997         _cflags_size='-Os'
3998         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3999     elif $_cc -V 2>&1 | grep -q Portland; then
4000         _type=pgi
4001         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4002         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4003         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4004         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4005         _cflags_noopt="-O"
4006         _flags_filter=pgi_flags
4007     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4008         _type=armasm
4009         _ident=$($_cc | head -n1)
4010         # 4509: "This form of conditional instruction is deprecated"
4011         _flags="-nologo -ignore 4509"
4012         _flags_filter=armasm_flags
4013     elif $_cc 2>&1 | grep -q Intel; then
4014         _type=icl
4015         _ident=$($_cc 2>&1 | head -n1)
4016         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4017         # Not only is O3 broken on 13.x+ but it is slower on all previous
4018         # versions (tested) as well.
4019         _cflags_speed="-O2"
4020         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4021         if $_cc 2>&1 | grep -q Linker; then
4022             _ld_o='-out:$@'
4023         else
4024             _ld_o='-Fe$@'
4025         fi
4026         _cc_o='-Fo$@'
4027         _cc_e='-P'
4028         _flags_filter=icl_flags
4029         _ld_lib='lib%.a'
4030         _ld_path='-libpath:'
4031         # -Qdiag-error to make icl error when seeing certain unknown arguments
4032         _flags='-nologo -Qdiag-error:4044,10157'
4033         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4034         # with MSVC which enables it by default.
4035         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4036         disable stripping
4037     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4038         _type=msvc
4039         _ident=$($_cc 2>&1 | head -n1)
4040         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4041         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4042         _cflags_speed="-O2"
4043         _cflags_size="-O1"
4044         if $_cc -nologo- 2>&1 | grep -q Linker; then
4045             _ld_o='-out:$@'
4046         else
4047             _ld_o='-Fe$@'
4048         fi
4049         _cc_o='-Fo$@'
4050         _cc_e='-P -Fi$@'
4051         _flags_filter=msvc_flags
4052         _ld_lib='lib%.a'
4053         _ld_path='-libpath:'
4054         _flags='-nologo'
4055         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4056         disable stripping
4057     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4058         _type=cparser
4059         _ident=$($_cc --version | head -n1)
4060         _depflags='-MMD'
4061         _cflags_speed='-O4'
4062         _cflags_size='-O2'
4063         _flags_filter=cparser_flags
4064     fi
4065
4066     eval ${pfx}_type=\$_type
4067     eval ${pfx}_ident=\$_ident
4068 }
4069
4070 set_ccvars(){
4071     eval ${1}_C=\${_cc_c-\${${1}_C}}
4072     eval ${1}_E=\${_cc_e-\${${1}_E}}
4073     eval ${1}_O=\${_cc_o-\${${1}_O}}
4074
4075     if [ -n "$_depflags" ]; then
4076         eval ${1}_DEPFLAGS=\$_depflags
4077     else
4078         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4079         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4080         eval DEP${1}FLAGS=\$_flags
4081     fi
4082 }
4083
4084 probe_cc cc "$cc" "true"
4085 cflags_filter=$_flags_filter
4086 cflags_speed=$_cflags_speed
4087 cflags_size=$_cflags_size
4088 cflags_noopt=$_cflags_noopt
4089 add_cflags $_flags $_cflags
4090 cc_ldflags=$_ldflags
4091 set_ccvars CC
4092
4093 probe_cc hostcc "$host_cc"
4094 host_cflags_filter=$_flags_filter
4095 add_host_cflags  $_flags $_cflags
4096 set_ccvars HOSTCC
4097
4098 test -n "$cc_type" && enable $cc_type ||
4099     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4100
4101 : ${as_default:=$cc}
4102 : ${objcc_default:=$cc}
4103 : ${dep_cc_default:=$cc}
4104 : ${ld_default:=$cc}
4105 : ${host_ld_default:=$host_cc}
4106 set_default ar as objcc dep_cc ld ln_s host_ld windres
4107
4108 probe_cc as "$as"
4109 asflags_filter=$_flags_filter
4110 add_asflags $_flags $_cflags
4111 set_ccvars AS
4112
4113 probe_cc objcc "$objcc"
4114 objcflags_filter=$_flags_filter
4115 add_objcflags $_flags $_cflags
4116 set_ccvars OBJC
4117
4118 probe_cc ld "$ld"
4119 ldflags_filter=$_flags_filter
4120 add_ldflags $_flags $_ldflags
4121 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4122 LD_O=${_ld_o-$LD_O}
4123 LD_LIB=${_ld_lib-$LD_LIB}
4124 LD_PATH=${_ld_path-$LD_PATH}
4125
4126 probe_cc hostld "$host_ld"
4127 host_ldflags_filter=$_flags_filter
4128 add_host_ldflags $_flags $_ldflags
4129 HOSTLD_O=${_ld_o-$HOSTLD_O}
4130
4131 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4132     probe_cc depcc "$dep_cc"
4133     CCDEP=${_DEPCMD:-$DEPCMD}
4134     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4135     DEPCCFLAGS=$_flags
4136 fi
4137
4138 if $ar 2>&1 | grep -q Microsoft; then
4139     arflags="-nologo"
4140     ar_o='-out:$@'
4141 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4142     arflags="rq"
4143     ar_o='$@'
4144 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4145     arflags='-Xany -r -c'
4146     ar_o='$@'
4147 elif $ar 2>&1 | grep -q "\[D\] "; then
4148     arflags="rcD"
4149     ar_o='$@'
4150 else
4151     arflags="rc"
4152     ar_o='$@'
4153 fi
4154
4155 add_cflags $extra_cflags
4156 add_cxxflags $extra_cxxflags
4157 add_objcflags $extra_objcflags
4158 add_asflags $extra_cflags
4159
4160 if test -n "$sysroot"; then
4161     case "$cc_type" in
4162         gcc|llvm_gcc|clang)
4163             add_cppflags --sysroot="$sysroot"
4164             add_ldflags --sysroot="$sysroot"
4165 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4166             add_cppflags -isysroot "$sysroot"
4167             add_ldflags -isysroot "$sysroot"
4168         ;;
4169         tms470)
4170             add_cppflags -I"$sysinclude"
4171             add_ldflags  --sysroot="$sysroot"
4172         ;;
4173     esac
4174 fi
4175
4176 if test "$cpu" = host; then
4177     enabled cross_compile &&
4178         die "--cpu=host makes no sense when cross-compiling."
4179
4180     case "$cc_type" in
4181         gcc|llvm_gcc)
4182             check_native(){
4183                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4184                 sed -n "/cc1.*$1=/{
4185                             s/.*$1=\\([^ ]*\\).*/\\1/
4186                             p
4187                             q
4188                         }" $TMPE
4189             }
4190             cpu=$(check_native -march || check_native -mcpu)
4191         ;;
4192         clang)
4193             check_native(){
4194                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4195                 sed -n "/cc1.*-target-cpu /{
4196                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4197                             p
4198                             q
4199                         }" $TMPE
4200             }
4201             cpu=$(check_native -march)
4202         ;;
4203     esac
4204
4205     test "${cpu:-host}" = host &&
4206         die "--cpu=host not supported with compiler $cc"
4207 fi
4208
4209 # Deal with common $arch aliases
4210 case "$arch" in
4211     aarch64|arm64)
4212         arch="aarch64"
4213     ;;
4214     arm*|iPad*|iPhone*)
4215         arch="arm"
4216     ;;
4217     mips*|IP*)
4218         case "$arch" in
4219         *el)
4220             add_cppflags -EL
4221             add_ldflags -EL
4222         ;;
4223         *eb)
4224             add_cppflags -EB
4225             add_ldflags -EB
4226         ;;
4227         esac
4228         arch="mips"
4229     ;;
4230     parisc*|hppa*)
4231         arch="parisc"
4232     ;;
4233     "Power Macintosh"|ppc*|powerpc*)
4234         arch="ppc"
4235     ;;
4236     s390|s390x)
4237         arch="s390"
4238     ;;
4239     sh4|sh)
4240         arch="sh4"
4241     ;;
4242     sun4*|sparc*)
4243         arch="sparc"
4244     ;;
4245     tilegx|tile-gx)
4246         arch="tilegx"
4247     ;;
4248     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4249         arch="x86"
4250     ;;
4251 esac
4252
4253 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4254 enable $arch
4255
4256 # Add processor-specific flags
4257 if enabled aarch64; then
4258
4259     case $cpu in
4260         armv*)
4261             cpuflags="-march=$cpu"
4262         ;;
4263         *)
4264             cpuflags="-mcpu=$cpu"
4265         ;;
4266     esac
4267
4268 elif enabled alpha; then
4269
4270     cpuflags="-mcpu=$cpu"
4271
4272 elif enabled arm; then
4273
4274     check_arm_arch() {
4275         check_cpp_condition stddef.h \
4276             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4277             $cpuflags
4278     }
4279
4280     probe_arm_arch() {
4281         if   check_arm_arch 4;        then echo armv4
4282         elif check_arm_arch 4T;       then echo armv4t
4283         elif check_arm_arch 5;        then echo armv5
4284         elif check_arm_arch 5E;       then echo armv5e
4285         elif check_arm_arch 5T;       then echo armv5t
4286         elif check_arm_arch 5TE;      then echo armv5te
4287         elif check_arm_arch 5TEJ;     then echo armv5te
4288         elif check_arm_arch 6;        then echo armv6
4289         elif check_arm_arch 6J;       then echo armv6j
4290         elif check_arm_arch 6K;       then echo armv6k
4291         elif check_arm_arch 6Z;       then echo armv6z
4292         elif check_arm_arch 6ZK;      then echo armv6zk
4293         elif check_arm_arch 6T2;      then echo armv6t2
4294         elif check_arm_arch 7;        then echo armv7
4295         elif check_arm_arch 7A  7_A;  then echo armv7-a
4296         elif check_arm_arch 7S;       then echo armv7-a
4297         elif check_arm_arch 7R  7_R;  then echo armv7-r
4298         elif check_arm_arch 7M  7_M;  then echo armv7-m
4299         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4300         elif check_arm_arch 8A  8_A;  then echo armv8-a
4301         fi
4302     }
4303
4304     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4305
4306     case $cpu in
4307         armv*)
4308             cpuflags="-march=$cpu"
4309             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4310         ;;
4311         *)
4312             cpuflags="-mcpu=$cpu"
4313             case $cpu in
4314                 cortex-a*)                               subarch=armv7a  ;;
4315                 cortex-r*)                               subarch=armv7r  ;;
4316                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4317                 arm11*)                                  subarch=armv6   ;;
4318                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4319                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4320                 *)                             subarch=$(probe_arm_arch) ;;
4321             esac
4322         ;;
4323     esac
4324
4325     case "$subarch" in
4326         armv5t*)    enable fast_clz                ;;
4327         armv[6-8]*)
4328             enable fast_clz
4329             disabled fast_unaligned || enable fast_unaligned
4330             ;;
4331     esac
4332
4333 elif enabled avr32; then
4334
4335     case $cpu in
4336         ap7[02]0[0-2])
4337             subarch="avr32_ap"
4338             cpuflags="-mpart=$cpu"
4339         ;;
4340         ap)
4341             subarch="avr32_ap"
4342             cpuflags="-march=$cpu"
4343         ;;
4344         uc3[ab]*)
4345             subarch="avr32_uc"
4346             cpuflags="-mcpu=$cpu"
4347         ;;
4348         uc)
4349             subarch="avr32_uc"
4350             cpuflags="-march=$cpu"
4351         ;;
4352     esac
4353
4354 elif enabled bfin; then
4355
4356     cpuflags="-mcpu=$cpu"
4357
4358 elif enabled mips; then
4359
4360     cpuflags="-march=$cpu"
4361
4362     if [ "$cpu" != "generic" ]; then
4363         disable mips32r2
4364         disable mips32r5
4365         disable mips64r2
4366         disable mips32r6
4367         disable mips64r6
4368         disable loongson2
4369         disable loongson3
4370
4371         case $cpu in
4372             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4373                 enable mips32r2
4374                 disable msa
4375             ;;
4376             p5600|i6400|p6600)
4377                 disable mipsdsp
4378                 disable mipsdspr2
4379             ;;
4380             loongson*)
4381                 enable loongson2
4382                 enable loongson3
4383                 enable local_aligned_8 local_aligned_16 local_aligned_32
4384                 enable simd_align_16
4385                 enable fast_64bit
4386                 enable fast_clz
4387                 enable fast_cmov
4388                 enable fast_unaligned
4389                 disable aligned_stack
4390                 disable mipsfpu
4391                 disable mipsdsp
4392                 disable mipsdspr2
4393                 case $cpu in
4394                     loongson3*)
4395                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4396                     ;;
4397                     loongson2e)
4398                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4399                     ;;
4400                     loongson2f)
4401                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4402                     ;;
4403                 esac
4404             ;;
4405             *)
4406                 # Unknown CPU. Disable everything.
4407                 warn "unknown CPU. Disabling all MIPS optimizations."
4408                 disable mipsfpu
4409                 disable mipsdsp
4410                 disable mipsdspr2
4411                 disable msa
4412                 disable mmi
4413             ;;
4414         esac
4415
4416         case $cpu in
4417             24kc)
4418                 disable mipsfpu
4419                 disable mipsdsp
4420                 disable mipsdspr2
4421             ;;
4422             24kf*)
4423                 disable mipsdsp
4424                 disable mipsdspr2
4425             ;;
4426             24kec|34kc|1004kc)
4427                 disable mipsfpu
4428                 disable mipsdspr2
4429             ;;
4430             24kef*|34kf*|1004kf*)
4431                 disable mipsdspr2
4432             ;;
4433             74kc)
4434                 disable mipsfpu
4435             ;;
4436             p5600)
4437                 enable mips32r5
4438                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4439             ;;
4440             i6400)
4441                 enable mips64r6
4442                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4443             ;;
4444             p6600)
4445                 enable mips64r6
4446                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4447             ;;
4448         esac
4449     else
4450         # We do not disable anything. Is up to the user to disable the unwanted features.
4451         warn 'generic cpu selected'
4452     fi
4453
4454 elif enabled ppc; then
4455
4456     disable ldbrx
4457
4458     case $(tolower $cpu) in
4459         601|ppc601|powerpc601)
4460             cpuflags="-mcpu=601"
4461             disable altivec
4462         ;;
4463         603*|ppc603*|powerpc603*)
4464             cpuflags="-mcpu=603"
4465             disable altivec
4466         ;;
4467         604*|ppc604*|powerpc604*)
4468             cpuflags="-mcpu=604"
4469             disable altivec
4470         ;;
4471         g3|75*|ppc75*|powerpc75*)
4472             cpuflags="-mcpu=750"
4473             disable altivec
4474         ;;
4475         g4|745*|ppc745*|powerpc745*)
4476             cpuflags="-mcpu=7450"
4477             disable vsx
4478         ;;
4479         74*|ppc74*|powerpc74*)
4480             cpuflags="-mcpu=7400"
4481             disable vsx
4482         ;;
4483         g5|970|ppc970|powerpc970)
4484             cpuflags="-mcpu=970"
4485             disable vsx
4486         ;;
4487         power[3-6]*)
4488             cpuflags="-mcpu=$cpu"
4489             disable vsx
4490         ;;
4491         power[7-8]*)
4492             cpuflags="-mcpu=$cpu"
4493         ;;
4494         cell)
4495             cpuflags="-mcpu=cell"
4496             enable ldbrx
4497             disable vsx
4498         ;;
4499         e500mc)
4500             cpuflags="-mcpu=e500mc"
4501             disable altivec
4502         ;;
4503         e500v2)
4504             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4505             disable altivec
4506             disable dcbzl
4507         ;;
4508         e500)
4509             cpuflags="-mcpu=8540 -mhard-float"
4510             disable altivec
4511             disable dcbzl
4512         ;;
4513     esac
4514
4515 elif enabled sparc; then
4516
4517     case $cpu in
4518         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4519             cpuflags="-mcpu=$cpu"
4520         ;;
4521         ultrasparc*|niagara[234])
4522             cpuflags="-mcpu=$cpu"
4523         ;;
4524     esac
4525
4526 elif enabled x86; then
4527
4528     case $cpu in
4529         i[345]86|pentium)
4530             cpuflags="-march=$cpu"
4531             disable i686
4532             disable mmx
4533         ;;
4534         # targets that do NOT support nopl and conditional mov (cmov)
4535         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4536             cpuflags="-march=$cpu"
4537             disable i686
4538         ;;
4539         # targets that do support nopl and conditional mov (cmov)
4540         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4541         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4542         |amdfam10|barcelona|b[dt]ver*|znver*)
4543             cpuflags="-march=$cpu"
4544             enable i686
4545             enable fast_cmov
4546         ;;
4547         # targets that do support conditional mov but on which it's slow
4548         pentium4|pentium4m|prescott|nocona)
4549             cpuflags="-march=$cpu"
4550             enable i686
4551             disable fast_cmov
4552         ;;
4553     esac
4554
4555 fi
4556
4557 if [ "$cpu" != generic ]; then
4558     add_cflags  $cpuflags
4559     add_asflags $cpuflags
4560     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4561 fi
4562
4563 # compiler sanity check
4564 check_exec <<EOF
4565 int main(void){ return 0; }
4566 EOF
4567 if test "$?" != 0; then
4568     echo "$cc is unable to create an executable file."
4569     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4570         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4571         echo "Only do this if you know what cross compiling means."
4572     fi
4573     die "C compiler test failed."
4574 fi
4575
4576 add_cppflags -D_ISOC99_SOURCE
4577 add_cxxflags -D__STDC_CONSTANT_MACROS
4578 add_cxxflags -std=c++98
4579 check_cflags -std=c99
4580 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4581 #include <stdlib.h>
4582 EOF
4583 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4584 #include <stdlib.h>
4585 EOF
4586
4587 add_host_cppflags -D_ISOC99_SOURCE
4588 check_host_cflags -std=c99
4589 check_host_cflags -Wall
4590 check_host_cflags -O3
4591
4592 check_64bit(){
4593     arch32=$1
4594     arch64=$2
4595     expr=$3
4596     check_code cc "" "int test[2*($expr) - 1]" &&
4597         subarch=$arch64 || subarch=$arch32
4598 }
4599
4600 case "$arch" in
4601     aarch64|alpha|ia64)
4602         spic=$shared
4603     ;;
4604     mips)
4605         check_64bit mips mips64 '_MIPS_SIM > 1'
4606         spic=$shared
4607     ;;
4608     parisc)
4609         check_64bit parisc parisc64 'sizeof(void *) > 4'
4610         spic=$shared
4611     ;;
4612     ppc)
4613         check_64bit ppc ppc64 'sizeof(void *) > 4'
4614         spic=$shared
4615     ;;
4616     s390)
4617         check_64bit s390 s390x 'sizeof(void *) > 4'
4618         spic=$shared
4619     ;;
4620     sparc)
4621         check_64bit sparc sparc64 'sizeof(void *) > 4'
4622         spic=$shared
4623     ;;
4624     x86)
4625         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4626         # Treat x32 as x64 for now. Note it also needs spic=$shared
4627         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4628             subarch=x86_64
4629         if test "$subarch" = "x86_64"; then
4630             spic=$shared
4631         fi
4632     ;;
4633     ppc)
4634         check_cc <<EOF && subarch="ppc64"
4635         int test[(int)sizeof(char*) - 7];
4636 EOF
4637     ;;
4638 esac
4639
4640 enable $subarch
4641 enabled spic && enable_weak pic
4642
4643 # OS specific
4644 case $target_os in
4645     aix)
4646         SHFLAGS=-shared
4647         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4648         enabled shared && add_ldflags -Wl,-brtl
4649         ;;
4650     android)
4651         disable symver
4652         enable section_data_rel_ro
4653         SLIB_INSTALL_NAME='$(SLIBNAME)'
4654         SLIB_INSTALL_LINKS=
4655         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4656         ;;
4657     haiku)
4658         prefix_default="/boot/common"
4659         network_extralibs="-lnetwork"
4660         host_libs=
4661         ;;
4662     sunos)
4663         SHFLAGS='-shared -Wl,-h,$$(@F)'
4664         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4665         network_extralibs="-lsocket -lnsl"
4666         add_cppflags -D__EXTENSIONS__
4667         # When using suncc to build, the Solaris linker will mark
4668         # an executable with each instruction set encountered by
4669         # the Solaris assembler.  As our libraries contain their own
4670         # guards for processor-specific code, instead suppress
4671         # generation of the HWCAPS ELF section on Solaris x86 only.
4672         enabled_all suncc x86 &&
4673             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4674             add_ldflags -Wl,-M,mapfile
4675         nm_default='nm -P -g'
4676         version_script='-M'
4677         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4678         ;;
4679     netbsd)
4680         disable symver
4681         oss_indev_extralibs="-lossaudio"
4682         oss_outdev_extralibs="-lossaudio"
4683         enabled gcc || check_ldflags -Wl,-zmuldefs
4684         ;;
4685     openbsd|bitrig)
4686         disable symver
4687         SHFLAGS='-shared'
4688         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4689         SLIB_INSTALL_LINKS=
4690         oss_indev_extralibs="-lossaudio"
4691         oss_outdev_extralibs="-lossaudio"
4692         ;;
4693     dragonfly)
4694         disable symver
4695         ;;
4696     freebsd)
4697         ;;
4698     bsd/os)
4699         add_extralibs -lpoll -lgnugetopt
4700         strip="strip -d"
4701         ;;
4702     darwin)
4703         enabled ppc && add_asflags -force_cpusubtype_ALL
4704         install_name_dir_default='$(SHLIBDIR)'
4705         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4706         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4707         strip="${strip} -x"
4708         add_ldflags -Wl,-dynamic,-search_paths_first
4709         SLIBSUF=".dylib"
4710         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4711         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4712         objformat="macho"
4713         enabled x86_64 && objformat="macho64"
4714         enabled_any pic shared x86_64 ||
4715             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4716         check_header dispatch/dispatch.h &&
4717             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4718         version_script='-exported_symbols_list'
4719         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4720         ;;
4721     msys*)
4722         die "Native MSYS builds are discouraged, please use the MINGW environment."
4723         ;;
4724     mingw32*|mingw64*)
4725         if test $target_os = "mingw32ce"; then
4726             disable network
4727         else
4728             target_os=mingw32
4729         fi
4730         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4731         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4732         LIBTARGET=i386
4733         if enabled x86_64; then
4734             LIBTARGET="i386:x86-64"
4735         elif enabled arm; then
4736             LIBTARGET=arm-wince
4737         fi
4738         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4739         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4740         shlibdir_default="$bindir_default"
4741         SLIBPREF=""
4742         SLIBSUF=".dll"
4743         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4744         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4745         dlltool="${cross_prefix}dlltool"
4746         if check_cmd lib.exe -list; then
4747             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4748             if enabled x86_64; then
4749                 LIBTARGET=x64
4750             fi
4751         elif check_cmd $dlltool --version; then
4752             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4753         fi
4754         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4755         SLIB_INSTALL_LINKS=
4756         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4757         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4758         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4759         objformat="win32"
4760         ranlib=:
4761         enable dos_paths
4762         check_ldflags -Wl,--nxcompat,--dynamicbase
4763         # Lets work around some stupidity in binutils.
4764         # ld will strip relocations from executables even though we need them
4765         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4766         # however ld then forgets what the entry point should be (oops) so we
4767         # have to manually (re)set it.
4768         if enabled x86_32; then
4769             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4770         elif enabled x86_64; then
4771             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4772             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4773             # Set image base >4GB for extra entropy with HEASLR
4774             add_ldexeflags -Wl,--image-base,0x140000000
4775             append SHFLAGS -Wl,--image-base,0x180000000
4776         fi
4777         ;;
4778     win32|win64)
4779         disable symver
4780         if enabled shared; then
4781             # Link to the import library instead of the normal static library
4782             # for shared libs.
4783             LD_LIB='%.lib'
4784             # Cannot build both shared and static libs with MSVC or icl.
4785             disable static
4786         fi
4787         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4788         shlibdir_default="$bindir_default"
4789         SLIBPREF=""
4790         SLIBSUF=".dll"
4791         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4792         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4793         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4794         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4795         SLIB_INSTALL_LINKS=
4796         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4797         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4798         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4799         objformat="win32"
4800         ranlib=:
4801         enable dos_paths
4802         ;;
4803     cygwin*)
4804         target_os=cygwin
4805         shlibdir_default="$bindir_default"
4806         SLIBPREF="cyg"
4807         SLIBSUF=".dll"
4808         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4809         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4810         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4811         SLIB_INSTALL_LINKS=
4812         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4813         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4814         objformat="win32"
4815         enable dos_paths
4816         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4817         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4818         ;;
4819     *-dos|freedos|opendos)
4820         network_extralibs="-lsocket"
4821         objformat="coff"
4822         enable dos_paths
4823         add_cppflags -U__STRICT_ANSI__
4824         ;;
4825     linux)
4826         enable dv1394
4827         enable section_data_rel_ro
4828         ;;
4829     irix*)
4830         target_os=irix
4831         ranlib="echo ignoring ranlib"
4832         ;;
4833     os/2*)
4834         strip="lxlite -CS"
4835         objformat="aout"
4836         add_cppflags -D_GNU_SOURCE
4837         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4838         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4839         LIBSUF="_s.a"
4840         SLIBPREF=""
4841         SLIBSUF=".dll"
4842         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4843         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4844         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4845             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4846             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4847             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4848             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4849         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4850             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4851         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4852         SLIB_INSTALL_LINKS=
4853         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4854         enable dos_paths
4855         enable_weak os2threads
4856         ;;
4857     gnu/kfreebsd)
4858         add_cppflags -D_BSD_SOURCE
4859         ;;
4860     gnu)
4861         ;;
4862     qnx)
4863         add_cppflags -D_QNX_SOURCE
4864         network_extralibs="-lsocket"
4865         ;;
4866     symbian)
4867         SLIBSUF=".dll"
4868         enable dos_paths
4869         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4870         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4871         add_ldflags -Wl,--target1-abs,--no-undefined \
4872                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4873                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4874         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4875                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4876                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4877         ;;
4878     osf1)
4879         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4880         ;;
4881     minix)
4882         ;;
4883     plan9)
4884         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4885                      -D_REENTRANT_SOURCE        \
4886                      -D_RESEARCH_SOURCE         \
4887                      -DFD_SETSIZE=96            \
4888                      -DHAVE_SOCK_OPTS
4889         add_compat strtod.o strtod=avpriv_strtod
4890         network_extralibs='-lbsd'
4891         exeobjs=compat/plan9/main.o
4892         disable ffserver
4893         cp_f='cp'
4894         ;;
4895     none)
4896         ;;
4897     *)
4898         die "Unknown OS '$target_os'."
4899         ;;
4900 esac
4901
4902 # test if creating links works
4903 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4904 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4905 mkdir "$link_dest"
4906 $ln_s "$link_dest" "$link_name"
4907 touch "$link_dest/test_file"
4908 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4909     # create link to source path
4910     [ -e src ] && rm src
4911     $ln_s "$source_path" src
4912     source_link=src
4913 else
4914     # creating directory links doesn't work
4915     # fall back to using the full source path
4916     source_link="$source_path"
4917 fi
4918 # cleanup
4919 rm -r "$link_dest"
4920 rm -r "$link_name"
4921
4922 # determine libc flavour
4923
4924 probe_libc(){
4925     pfx=$1
4926     pfx_no_=${pfx%_}
4927     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4928     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4929         eval ${pfx}libc_type=uclibc
4930         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4931     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4932         eval ${pfx}libc_type=glibc
4933         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4934     # MinGW headers can be installed on Cygwin, so check for newlib first.
4935     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4936         eval ${pfx}libc_type=newlib
4937         add_${pfx}cppflags -U__STRICT_ANSI__
4938     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4939     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4940         eval ${pfx}libc_type=mingw64
4941         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4942             add_compat msvcrt/snprintf.o
4943             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4944         fi
4945         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4946         eval test \$${pfx_no_}cc_type = "gcc" &&
4947             add_${pfx}cppflags -D__printf__=__gnu_printf__
4948     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4949          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4950         eval ${pfx}libc_type=mingw32
4951         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4952             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4953             die "ERROR: MinGW32 runtime version must be >= 3.15."
4954         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4955         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
4956             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4957         eval test \$${pfx_no_}cc_type = "gcc" &&
4958             add_${pfx}cppflags -D__printf__=__gnu_printf__
4959     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4960         eval ${pfx}libc_type=msvcrt
4961         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4962             if [ "$pfx" = host_ ]; then
4963                 add_host_cppflags -Dsnprintf=_snprintf
4964             else
4965                 add_compat strtod.o strtod=avpriv_strtod
4966                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4967                                              _snprintf=avpriv_snprintf  \
4968                                              vsnprintf=avpriv_vsnprintf
4969             fi
4970         fi
4971         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4972         # 0x601 by default unless something else is set by the user.
4973         # This can easily lead to us detecting functions only present
4974         # in such new versions and producing binaries requiring windows 7.0.
4975         # Therefore explicitly set the default to XP unless the user has
4976         # set something else on the command line.
4977         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4978         # family. For these cases, configure is free to use any functions
4979         # found in the SDK headers by default. (Alternatively, we could force
4980         # _WIN32_WINNT to 0x0602 in that case.)
4981         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4982             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4983 #ifdef WINAPI_FAMILY
4984 #include <winapifamily.h>
4985 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4986 #error not desktop
4987 #endif
4988 #endif
4989 EOF
4990     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4991         eval ${pfx}libc_type=klibc
4992     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4993         eval ${pfx}libc_type=bionic
4994     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4995         eval ${pfx}libc_type=solaris
4996         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4997     fi
4998     check_${pfx}cc <<EOF
4999 #include <time.h>
5000 void *v = localtime_r;
5001 EOF
5002 test "$?" != 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
5003 #include <time.h>
5004 void *v = localtime_r;
5005 EOF
5006
5007 }
5008
5009 probe_libc
5010 test -n "$libc_type" && enable libc_$libc_type
5011 probe_libc host_
5012 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5013
5014 case $libc_type in
5015     bionic)
5016         add_compat strtod.o strtod=avpriv_strtod
5017         ;;
5018 esac
5019
5020 # hacks for compiler/libc/os combinations
5021
5022 if enabled_all tms470 libc_glibc; then
5023     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5024     add_cppflags -D__USER_LABEL_PREFIX__=
5025     add_cppflags -D__builtin_memset=memset
5026     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5027     add_cflags   -pds=48    # incompatible redefinition of macro
5028 fi
5029
5030 if enabled_all ccc libc_glibc; then
5031     add_ldflags -Wl,-z,now  # calls to libots crash without this
5032 fi
5033
5034 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5035     add_cppflags '-I\$(SRC_PATH)/compat/float'
5036
5037 esc(){
5038     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5039 }
5040
5041 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5042
5043 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5044
5045 set_default libdir
5046 : ${shlibdir_default:="$libdir"}
5047 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5048
5049 set_default $PATHS_LIST
5050 set_default nm
5051
5052 # we need to build at least one lib type
5053 if ! enabled_any static shared; then
5054     cat <<EOF
5055 At least one library type must be built.
5056 Specify --enable-static to build the static libraries or --enable-shared to
5057 build the shared libraries as well. To only build the shared libraries specify
5058 --disable-static in addition to --enable-shared.
5059 EOF
5060     exit 1
5061 fi
5062
5063 die_license_disabled() {
5064     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5065 }
5066
5067 die_license_disabled_gpl() {
5068     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5069 }
5070
5071 die_license_disabled gpl frei0r
5072 die_license_disabled gpl libcdio
5073 die_license_disabled gpl librubberband
5074 die_license_disabled gpl libsmbclient
5075 die_license_disabled gpl libvidstab
5076 die_license_disabled gpl libx264
5077 die_license_disabled gpl libx265
5078 die_license_disabled gpl libxavs
5079 die_license_disabled gpl libxvid
5080 die_license_disabled gpl x11grab
5081
5082 die_license_disabled nonfree cuda
5083 die_license_disabled nonfree cuvid
5084 die_license_disabled nonfree libnpp
5085 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5086 enabled gpl && die_license_disabled_gpl nonfree openssl
5087
5088 die_license_disabled version3 gmp
5089 die_license_disabled version3 libopencore_amrnb
5090 die_license_disabled version3 libopencore_amrwb
5091 die_license_disabled version3 libsmbclient
5092 die_license_disabled version3 libvo_amrwbenc
5093
5094 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5095
5096 disabled optimizations || check_cflags -fomit-frame-pointer
5097
5098 enable_weak_pic() {
5099     disabled pic && return
5100     enable pic
5101     add_cppflags -DPIC
5102     case "$target_os" in
5103     mingw*|cygwin*)
5104         ;;
5105     *)
5106         add_cflags -fPIC
5107         ;;
5108     esac
5109     add_asflags  -fPIC
5110 }
5111
5112 enabled pic && enable_weak_pic
5113
5114 check_cc <<EOF || die "Symbol mangling check failed."
5115 int ff_extern;
5116 EOF
5117 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5118 extern_prefix=${sym%%ff_extern*}
5119
5120 check_cc <<EOF && enable_weak inline_asm
5121 void foo(void) { __asm__ volatile ("" ::); }
5122 EOF
5123
5124 _restrict=
5125 for restrict_keyword in restrict __restrict__ __restrict; do
5126     check_cc <<EOF && _restrict=$restrict_keyword && break
5127 void foo(char * $restrict_keyword p);
5128 EOF
5129 done
5130
5131 check_cc <<EOF && enable pragma_deprecated
5132 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5133 EOF
5134
5135 check_cc <<EOF && enable attribute_packed
5136 struct { int x; } __attribute__((packed)) x;
5137 EOF
5138
5139 check_cc <<EOF && enable attribute_may_alias
5140 union { int x; } __attribute__((may_alias)) x;
5141 EOF
5142
5143 check_cc <<EOF || die "endian test failed"
5144 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5145 EOF
5146 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5147
5148 if ! enabled ppc64 || enabled bigendian; then
5149     disable vsx
5150 fi
5151
5152 check_gas() {
5153     log "check_gas using '$as' as AS"
5154     # :vararg is used on aarch64, arm and ppc altivec
5155     check_as <<EOF || return 1
5156 .macro m n, y:vararg=0
5157 \n: .int \y
5158 .endm
5159 m x
5160 EOF
5161     # .altmacro is only used in arm asm
5162     ! enabled arm || check_as <<EOF || return 1
5163 .altmacro
5164 EOF
5165     enable gnu_as
5166     return 0
5167 }
5168
5169 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5170     nogas=:
5171     enabled_any arm aarch64 && nogas=die
5172     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5173     as_noop=-v
5174
5175     case $as_type in
5176         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5177         gcc)  gaspp_as_type=gas ;;
5178         *)    gaspp_as_type=$as_type ;;
5179     esac
5180
5181     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5182
5183     test "${as#*gas-preprocessor.pl}" != "$as" ||
5184     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5185         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5186
5187     if ! check_gas ; then
5188         as=${gas:=$as}
5189         check_gas || \
5190             $nogas "GNU assembler not found, install/update gas-preprocessor"
5191     fi
5192
5193     check_as <<EOF && enable as_func
5194 .func test
5195 .endfunc
5196 EOF
5197 fi
5198
5199 check_inline_asm inline_asm_labels '"1:\n"'
5200
5201 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5202
5203 if enabled aarch64; then
5204     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5205     # internal assembler in clang 3.3 does not support this instruction
5206     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5207     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5208
5209     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5210
5211 elif enabled alpha; then
5212
5213     check_cflags -mieee
5214
5215 elif enabled arm; then
5216
5217     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5218
5219     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5220 float func(float a, float b){ return a+b; }
5221 EOF
5222
5223     enabled thumb && check_cflags -mthumb || check_cflags -marm
5224
5225     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5226         enable vfp_args
5227     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5228         enable vfp_args
5229     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5230         case "${cross_prefix:-$cc}" in
5231             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5232             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5233 __asm__ (".eabi_attribute 28, 1");
5234 int main(void) { return 0; }
5235 EOF
5236         esac
5237         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5238     fi
5239
5240     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5241     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5242     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5243     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5244     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5245     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5246     enabled setend  && check_insn setend  'setend be'
5247
5248     [ $target_os = linux ] || [ $target_os = android ] ||
5249         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5250             $ARCH_EXT_LIST_ARM
5251
5252     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5253
5254     check_as <<EOF && enable as_dn_directive
5255 ra .dn d0.i16
5256 .unreq ra
5257 EOF
5258
5259     # llvm's integrated assembler supports .object_arch from llvm 3.5
5260     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5261 .object_arch armv4
5262 EOF
5263
5264     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5265
5266 elif enabled mips; then
5267
5268     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5269     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5270     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5271
5272     # Enable minimum ISA based on selected options
5273     if enabled mips64; then
5274         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5275         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5276         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5277     else
5278         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5279         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5280         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5281         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5282     fi
5283
5284     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5285     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5286     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5287     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5288     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5289
5290 elif enabled parisc; then
5291
5292     if enabled gcc; then
5293         case $($cc -dumpversion) in
5294             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5295         esac
5296     fi
5297
5298 elif enabled ppc; then
5299
5300     enable local_aligned_8 local_aligned_16 local_aligned_32
5301
5302     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5303     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5304     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5305     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5306
5307     # AltiVec flags: The FSF version of GCC differs from the Apple version
5308     if enabled altivec; then
5309         check_cflags -maltivec -mabi=altivec &&
5310         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5311         check_cflags -faltivec
5312
5313         # check if our compiler supports Motorola AltiVec C API
5314         check_cc <<EOF || disable altivec
5315 $inc_altivec_h
5316 int main(void) {
5317     vector signed int v1 = (vector signed int) { 0 };
5318     vector signed int v2 = (vector signed int) { 1 };
5319     v1 = vec_add(v1, v2);
5320     return 0;
5321 }
5322 EOF
5323
5324         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5325     fi
5326
5327     if enabled vsx; then
5328         check_cflags -mvsx &&
5329         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5330     fi
5331
5332     if enabled power8; then
5333         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5334     fi
5335
5336 elif enabled x86; then
5337
5338     check_builtin rdtsc    intrin.h   "__rdtsc()"
5339     check_builtin mm_empty mmintrin.h "_mm_empty()"
5340
5341     enable local_aligned_8 local_aligned_16 local_aligned_32
5342
5343     # check whether EBP is available on x86
5344     # As 'i' is stored on the stack, this program will crash
5345     # if the base pointer is used to access it because the
5346     # base pointer is cleared in the inline assembly code.
5347     check_exec_crash <<EOF && enable ebp_available
5348 volatile int i=0;
5349 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5350 return i;
5351 EOF
5352
5353     # check whether EBX is available on x86
5354     check_inline_asm ebx_available '""::"b"(0)' &&
5355         check_inline_asm ebx_available '"":::"%ebx"'
5356
5357     # check whether xmm clobbers are supported
5358     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5359
5360     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5361         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5362
5363     # check whether binutils is new enough to compile SSSE3/MMXEXT
5364     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5365     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5366
5367     if ! disabled_any asm mmx yasm; then
5368         if check_cmd $yasmexe --version; then
5369             enabled x86_64 && yasm_extra="-m amd64"
5370             yasm_debug="-g dwarf2"
5371         elif check_cmd nasm -v; then
5372             yasmexe=nasm
5373             yasm_debug="-g -F dwarf"
5374             if enabled x86_64; then
5375                 case "$objformat" in
5376                     elf)   objformat=elf64 ;;
5377                     win32) objformat=win64 ;;
5378                 esac
5379             fi
5380         fi
5381
5382         YASMFLAGS="-f $objformat $yasm_extra"
5383         enabled pic               && append YASMFLAGS "-DPIC"
5384         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5385         case "$objformat" in
5386             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5387         esac
5388
5389         check_yasm "movbe ecx, [5]" && enable yasm ||
5390             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5391         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5392         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5393         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5394         check_yasm "CPU amdnop" || disable cpunop
5395     fi
5396
5397     case "$cpu" in
5398         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5399             disable fast_clz
5400         ;;
5401     esac
5402
5403 fi
5404
5405 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5406
5407 check_ldflags -Wl,--as-needed
5408 check_ldflags -Wl,-z,noexecstack
5409
5410 if check_func dlopen && check_func dlsym; then
5411     ldl=
5412 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5413     ldl=-ldl
5414 fi
5415
5416 avisynth_demuxer_extralibs='$ldl'
5417 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5418 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5419 frei0r_filter_extralibs='$ldl'
5420 frei0r_src_filter_extralibs='$ldl'
5421 ladspa_filter_extralibs='$ldl'
5422 nvenc_extralibs='$ldl'
5423 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5424 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5425
5426 if ! disabled network; then
5427     check_func getaddrinfo $network_extralibs
5428     check_func inet_aton $network_extralibs
5429
5430     check_type netdb.h "struct addrinfo"
5431     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5432     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5433     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5434     check_type poll.h "struct pollfd"
5435     check_type netinet/sctp.h "struct sctp_event_subscribe"
5436     check_struct "sys/socket.h" "struct msghdr" msg_flags
5437     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5438     check_type netinet/in.h "struct sockaddr_in6"
5439     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5440     check_type "sys/types.h sys/socket.h" socklen_t
5441
5442     # Prefer arpa/inet.h over winsock2
5443     if check_header arpa/inet.h ; then
5444         check_func closesocket
5445     elif check_header winsock2.h ; then
5446         check_func_headers winsock2.h closesocket -lws2 &&
5447             network_extralibs="-lws2" ||
5448         { check_func_headers winsock2.h closesocket -lws2_32 &&
5449             network_extralibs="-lws2_32"; } || disable winsock2_h network
5450         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5451
5452         check_type ws2tcpip.h socklen_t
5453         check_type ws2tcpip.h "struct addrinfo"
5454         check_type ws2tcpip.h "struct group_source_req"
5455         check_type ws2tcpip.h "struct ip_mreq_source"
5456         check_type ws2tcpip.h "struct ipv6_mreq"
5457         check_type winsock2.h "struct pollfd"
5458         check_struct winsock2.h "struct sockaddr" sa_len
5459         check_type ws2tcpip.h "struct sockaddr_in6"
5460         check_type ws2tcpip.h "struct sockaddr_storage"
5461     else
5462         disable network
5463     fi
5464 fi
5465
5466 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5467 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5468 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5469 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5470 check_builtin sarestart signal.h "SA_RESTART"
5471 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5472 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5473 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5474 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5475 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5476
5477 case "$custom_allocator" in
5478     jemalloc)
5479         # jemalloc by default does not use a prefix
5480         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5481     ;;
5482     tcmalloc)
5483         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5484         malloc_prefix=tc_
5485     ;;
5486 esac
5487
5488 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5489 check_func  ${malloc_prefix}memalign            && enable memalign
5490 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5491
5492 check_func  access
5493 check_func_headers stdlib.h arc4random
5494 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5495 check_func  fcntl
5496 check_func  fork
5497 check_func  gethrtime
5498 check_func  getopt
5499 check_func  getrusage
5500 check_func  gettimeofday
5501 check_func  isatty
5502 check_func  mach_absolute_time
5503 check_func  mkstemp
5504 check_func  mmap
5505 check_func  mprotect
5506 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5507 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5508 check_func  sched_getaffinity
5509 check_func  setrlimit
5510 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5511 check_func  strerror_r
5512 check_func  sysconf
5513 check_func  sysctl
5514 check_func  usleep
5515
5516 check_func_headers conio.h kbhit
5517 check_func_headers io.h setmode
5518 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5519 check_func_headers stdlib.h getenv
5520 check_func_headers sys/stat.h lstat
5521
5522 check_func_headers windows.h CoTaskMemFree -lole32
5523 check_func_headers windows.h GetProcessAffinityMask
5524 check_func_headers windows.h GetProcessTimes
5525 check_func_headers windows.h GetSystemTimeAsFileTime
5526 check_func_headers windows.h LoadLibrary
5527 check_func_headers windows.h MapViewOfFile
5528 check_func_headers windows.h PeekNamedPipe
5529 check_func_headers windows.h SetConsoleTextAttribute
5530 check_func_headers windows.h SetConsoleCtrlHandler
5531 check_func_headers windows.h Sleep
5532 check_func_headers windows.h VirtualAlloc
5533 check_struct windows.h "CONDITION_VARIABLE" Ptr
5534 check_func_headers glob.h glob
5535 enabled xlib &&
5536     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5537
5538 check_header AudioToolbox/AudioToolbox.h
5539 check_header direct.h
5540 check_header dirent.h
5541 check_header dlfcn.h
5542 check_header d3d11.h
5543 check_header dxva.h
5544 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5545 check_header io.h
5546 check_header libcrystalhd/libcrystalhd_if.h
5547 check_header mach/mach_time.h
5548 check_header malloc.h
5549 check_header net/udplite.h
5550 check_header poll.h
5551 check_header sys/mman.h
5552 check_header sys/param.h
5553 check_header sys/resource.h
5554 check_header sys/select.h
5555 check_header sys/time.h
5556 check_header sys/un.h
5557 check_header termios.h
5558 check_header unistd.h
5559 check_header valgrind/valgrind.h
5560 check_header vdpau/vdpau.h
5561 check_header vdpau/vdpau_x11.h
5562 check_header VideoDecodeAcceleration/VDADecoder.h
5563 check_header VideoToolbox/VideoToolbox.h
5564 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5565 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5566 check_header windows.h
5567 check_header X11/extensions/XvMClib.h
5568 check_header asm/types.h
5569
5570 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5571 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5572 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5573 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5574
5575 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5576
5577 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5578 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5579 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5580 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5581 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5582
5583 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5584 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5585 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5586 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5587 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5588 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5589
5590 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5591
5592 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5593
5594 if ! disabled w32threads && ! enabled pthreads; then
5595     check_func_headers "windows.h process.h" _beginthreadex &&
5596         enable w32threads || disable w32threads
5597     if ! enabled w32threads && enabled winrt; then
5598         check_func_headers "windows.h" CreateThread &&
5599             enable w32threads || disable w32threads
5600     fi
5601 fi
5602
5603 # check for some common methods of building with pthread support
5604 # do this before the optional library checks as some of them require pthreads
5605 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5606     enable pthreads
5607     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5608         add_cflags -pthread
5609         add_extralibs -pthread
5610     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5611         add_cflags -pthreads
5612         add_extralibs -pthreads
5613     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5614         add_cflags -ldl -pthread
5615         add_extralibs -ldl -pthread
5616     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5617         add_extralibs -lpthreadGC2
5618     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5619         :
5620     elif ! check_func pthread_join && ! check_func pthread_create; then
5621         disable pthreads
5622     fi
5623     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5624 fi
5625
5626
5627 if enabled pthreads; then
5628   check_func pthread_cancel
5629 fi
5630
5631 enabled pthreads &&
5632     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5633
5634 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5635 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5636 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5637
5638 check_lib math.h sin -lm && LIBM="-lm"
5639 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5640
5641 atan2f_args=2
5642 copysign_args=2
5643 hypot_args=2
5644 ldexpf_args=2
5645 powf_args=2
5646
5647 for func in $MATH_FUNCS; do
5648     eval check_mathfunc $func \${${func}_args:-1}
5649 done
5650
5651 for func in $COMPLEX_FUNCS; do
5652     eval check_complexfunc $func \${${func}_args:-1}
5653 done
5654
5655 # Enable CUVID by default if CUDA is enabled
5656 if enabled cuda && ! disabled cuvid; then
5657     enable cuvid
5658 fi
5659
5660 # these are off by default, so fail if requested and not available
5661 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5662 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5663                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5664 enabled cuda              && { check_lib2 cuda.h cuInit -lcuda ||
5665                                die "ERROR: CUDA not found"; }
5666 enabled cuvid             && { add_cflags -I$source_path;
5667                                check_lib2 "compat/cuda/cuviddec.h" cuvidCreateDecoder -lnvcuvid ||
5668                                die "ERROR: CUVID not found"; } &&
5669                              { enabled cuda ||
5670                                die "ERROR: CUVID requires CUDA"; }
5671 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5672 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5673 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5674 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5675                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5676 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5677 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5678 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5679 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5680                                check_lib2 "dlfcn.h" dlopen -ldl; }
5681 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5682 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5683 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5684 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5685 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5686 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5687                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5688                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5689 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5690 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5691                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5692                                  warn "using libfdk without pkg-config"; } }
5693 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"
5694 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5695 enabled fontconfig        && enable libfontconfig
5696 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5697 enabled libfreetype       && require_libfreetype
5698 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5699 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5700 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5701                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5702                                done || die "ERROR: libgsm not found"; }
5703 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5704 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5705 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5706 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5707 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5708 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5709 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5710 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5711 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5712 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5713                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5714                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5715                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5716 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5717 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5718                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5719                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5720                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5721                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5722                                die "ERROR: libopenjpeg not found"; }
5723 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5724 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5725 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5726 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5727 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5728 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5729 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5730 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5731                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5732 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5733 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5734 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5735 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5736 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5737 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5738 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5739                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5740                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5741 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5742 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5743 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5744 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5745
5746 enabled libvpx            && {
5747     enabled libvpx_vp8_decoder && {
5748         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5749             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5750                 die "ERROR: libvpx decoder version must be >=0.9.1";
5751     }
5752     enabled libvpx_vp8_encoder && {
5753         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5754             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5755                 die "ERROR: libvpx encoder version must be >=0.9.7";
5756     }
5757     enabled libvpx_vp9_decoder && {
5758         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5759             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5760                 disable libvpx_vp9_decoder;
5761     }
5762     enabled libvpx_vp9_encoder && {
5763         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5764             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5765                 disable libvpx_vp9_encoder;
5766     }
5767     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5768         die "libvpx enabled but no supported decoders found"
5769     fi
5770 }
5771
5772 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5773 enabled libwebp           && {
5774     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5775     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5776 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5777                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5778                                  warn "using libx264 without pkg-config"; } } &&
5779                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5780                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5781                              { check_cpp_condition x264.h "X264_MPEG2" &&
5782                                enable libx262; }
5783 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5784                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5785                                die "ERROR: libx265 version must be >= 68."; }
5786 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5787 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5788 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5789 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5790 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5791                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5792                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5793 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5794 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5795                                 { ! enabled cross_compile && {
5796                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5797                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5798                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5799                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5800                                die "ERROR: mmal not found"; }
5801 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5802
5803 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5804 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5805                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5806                                die "ERROR: openal not found"; } &&
5807                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5808                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5809 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5810                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5811                                die "ERROR: opencl not found"; } &&
5812                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5813                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5814                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5815 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5816                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5817                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5818                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5819                                die "ERROR: opengl not found."
5820                              }
5821 enabled omx_rpi && enable omx
5822 enabled omx               && { check_header OMX_Core.h ||
5823                                 { ! enabled cross_compile && enabled omx_rpi && {
5824                                     add_cflags -isystem/opt/vc/include/IL ; }
5825                                 check_header OMX_Core.h ; } ||
5826                                die "ERROR: OpenMAX IL headers not found"; }
5827 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5828                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5829                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5830                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5831                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5832                                die "ERROR: openssl not found"; }
5833 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5834
5835 # libdc1394 check
5836 if enabled libdc1394; then
5837     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5838         enable libdc1394_2; } ||
5839     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5840         enable libdc1394_1; } ||
5841     die "ERROR: No version of libdc1394 found "
5842 fi
5843
5844 if enabled gcrypt; then
5845     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5846     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5847         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5848         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5849         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5850             die "ERROR: gcrypt not found"
5851         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5852     else
5853         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5854     fi
5855 fi
5856
5857 disabled sdl && disable sdl2
5858 if ! disabled sdl2; then
5859     SDL2_CONFIG="${cross_prefix}sdl2-config"
5860     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5861         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5862         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5863         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5864     else
5865       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5866         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5867         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5868         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5869         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5870         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5871       fi
5872     fi
5873     if test $target_os = "mingw32"; then
5874         sdl2_libs="$sdl2_libs -mconsole"
5875     fi
5876 fi
5877 enabled sdl2 && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5878
5879 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5880     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5881     enable securetransport; }
5882
5883 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5884                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5885
5886 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5887 enabled makeinfo \
5888     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5889     && enable makeinfo_html || disable makeinfo_html
5890 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5891 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5892 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5893 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5894
5895 check_header linux/fb.h
5896 check_header linux/videodev.h
5897 check_header linux/videodev2.h
5898 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5899
5900 check_header sys/videoio.h
5901 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5902
5903 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5904 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5905 # w32api 3.12 had it defined wrong
5906 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5907
5908 check_type "dshow.h" IBaseFilter
5909
5910 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5911 { check_header dev/bktr/ioctl_meteor.h &&
5912   check_header dev/bktr/ioctl_bt848.h; } ||
5913 { check_header machine/ioctl_meteor.h &&
5914   check_header machine/ioctl_bt848.h; } ||
5915 { check_header dev/video/meteor/ioctl_meteor.h &&
5916   check_header dev/video/bktr/ioctl_bt848.h; } ||
5917 check_header dev/ic/bt8xx.h
5918
5919 check_header sndio.h
5920 if check_struct sys/soundcard.h audio_buf_info bytes; then
5921     enable_safe sys/soundcard.h
5922 else
5923     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5924     #include <sys/soundcard.h>
5925     audio_buf_info abc;
5926 EOF
5927 fi
5928 check_header soundcard.h
5929
5930 enabled_any alsa_indev alsa_outdev &&
5931     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5932
5933 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5934     check_func jack_port_get_latency_range -ljack
5935
5936 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5937
5938 if enabled libcdio; then
5939     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5940     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5941     die "ERROR: No usable libcdio/cdparanoia found"
5942 fi
5943
5944 enabled xlib &&
5945     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5946
5947 if ! disabled libxcb; then
5948     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5949         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5950     } && disable x11grab && enable libxcb
5951
5952 if enabled libxcb; then
5953     disabled libxcb_shm || {
5954         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5955             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5956         } && check_header sys/shm.h && enable libxcb_shm; }
5957
5958     disabled libxcb_xfixes || {
5959         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5960             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5961         } && enable libxcb_xfixes; }
5962
5963     disabled libxcb_shape || {
5964         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5965             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5966         } && enable libxcb_shape; }
5967
5968     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5969     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5970 fi
5971 fi
5972
5973 if enabled x11grab; then
5974     enabled xlib || die "ERROR: Xlib not found"
5975     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5976     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5977 fi
5978
5979 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5980
5981 enabled dxva2api_h &&
5982     check_cc <<EOF && enable dxva2api_cobj
5983 #define _WIN32_WINNT 0x0600
5984 #define COBJMACROS
5985 #include <windows.h>
5986 #include <d3d9.h>
5987 #include <dxva2api.h>
5988 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5989 EOF
5990
5991 enabled vaapi &&
5992     check_lib va/va.h vaInitialize -lva ||
5993     disable vaapi
5994
5995 enabled vaapi &&
5996     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
5997     disable vaapi
5998
5999 if enabled vaapi ; then
6000     enabled xlib &&
6001     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6002     enable vaapi_x11
6003
6004     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6005     enable vaapi_drm
6006 fi
6007
6008 enabled vdpau &&
6009     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6010     disable vdpau
6011
6012 enabled vdpau && enabled xlib &&
6013     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6014     enable vdpau_x11
6015
6016 if enabled x86; then
6017     case $target_os in
6018         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6019             ;;
6020         *)
6021             disable nvenc
6022             ;;
6023     esac
6024 else
6025     disable nvenc
6026 fi
6027
6028 enabled nvenc &&
6029     check_cc -I$source_path <<EOF || disable nvenc
6030 #include "compat/nvenc/nvEncodeAPI.h"
6031 NV_ENCODE_API_FUNCTION_LIST flist;
6032 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6033 int main(void) { return 0; }
6034 EOF
6035
6036 # Funny iconv installations are not unusual, so check it after all flags have been set
6037 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6038
6039 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6040
6041 # add some useful compiler flags if supported
6042 check_cflags -Wdeclaration-after-statement
6043 check_cflags -Wall
6044 check_cflags -Wdisabled-optimization
6045 check_cflags -Wpointer-arith
6046 check_cflags -Wredundant-decls
6047 check_cflags -Wwrite-strings
6048 check_cflags -Wtype-limits
6049 check_cflags -Wundef
6050 check_cflags -Wmissing-prototypes
6051 check_cflags -Wno-pointer-to-int-cast
6052 check_cflags -Wstrict-prototypes
6053 check_cflags -Wempty-body
6054 enabled extra_warnings && check_cflags -Winline
6055 enabled extra_warnings && check_cflags -Wcast-qual
6056
6057 check_disable_warning(){
6058     warning_flag=-W${1#-Wno-}
6059     test_cflags $warning_flag && add_cflags $1
6060 }
6061
6062 check_disable_warning -Wno-parentheses
6063 check_disable_warning -Wno-switch
6064 check_disable_warning -Wno-format-zero-length
6065 check_disable_warning -Wno-pointer-sign
6066 check_disable_warning -Wno-unused-const-variable
6067
6068 # add some linker flags
6069 check_ldflags -Wl,--warn-common
6070 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6071 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6072 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6073 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6074
6075 # add some strip flags
6076 # -wN '..@*' is more selective than -x, but not available everywhere.
6077 check_stripflags -wN \'..@*\' || check_stripflags -x
6078
6079 enabled neon_clobber_test &&
6080     check_ldflags -Wl,--wrap,avcodec_open2              \
6081                   -Wl,--wrap,avcodec_decode_audio4      \
6082                   -Wl,--wrap,avcodec_decode_video2      \
6083                   -Wl,--wrap,avcodec_decode_subtitle2   \
6084                   -Wl,--wrap,avcodec_encode_audio2      \
6085                   -Wl,--wrap,avcodec_encode_video2      \
6086                   -Wl,--wrap,avcodec_send_packet        \
6087                   -Wl,--wrap,avcodec_receive_frame      \
6088                   -Wl,--wrap,avcodec_send_frame         \
6089                   -Wl,--wrap,avcodec_receive_packet     \
6090                   -Wl,--wrap,avcodec_encode_subtitle    \
6091                   -Wl,--wrap,swr_convert                \
6092                   -Wl,--wrap,avresample_convert ||
6093     disable neon_clobber_test
6094
6095 enabled xmm_clobber_test &&
6096     check_ldflags -Wl,--wrap,avcodec_open2              \
6097                   -Wl,--wrap,avcodec_decode_audio4      \
6098                   -Wl,--wrap,avcodec_decode_video2      \
6099                   -Wl,--wrap,avcodec_decode_subtitle2   \
6100                   -Wl,--wrap,avcodec_encode_audio2      \
6101                   -Wl,--wrap,avcodec_encode_video2      \
6102                   -Wl,--wrap,avcodec_encode_subtitle    \
6103                   -Wl,--wrap,avcodec_send_packet        \
6104                   -Wl,--wrap,avcodec_receive_frame      \
6105                   -Wl,--wrap,avcodec_send_frame         \
6106                   -Wl,--wrap,avcodec_receive_packet     \
6107                   -Wl,--wrap,swr_convert                \
6108                   -Wl,--wrap,avresample_convert         \
6109                   -Wl,--wrap,sws_scale ||
6110     disable xmm_clobber_test
6111
6112 check_ld "cc" <<EOF && enable proper_dce
6113 extern const int array[512];
6114 static inline int func(void) { return array[0]; }
6115 int main(void) { return 0; }
6116 EOF
6117
6118 if enabled proper_dce; then
6119     echo "X { local: *; };" > $TMPV
6120     if test_ldflags -Wl,${version_script},$TMPV; then
6121         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6122         check_cc <<EOF && enable symver_asm_label
6123 void ff_foo(void) __asm__ ("av_foo@VERSION");
6124 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6125 EOF
6126         check_cc <<EOF && enable symver_gnu_asm
6127 __asm__(".symver ff_foo,av_foo@VERSION");
6128 void ff_foo(void) {}
6129 EOF
6130     fi
6131 fi
6132
6133 if [ -z "$optflags" ]; then
6134     if enabled small; then
6135         optflags=$cflags_size
6136     elif enabled optimizations; then
6137         optflags=$cflags_speed
6138     else
6139         optflags=$cflags_noopt
6140     fi
6141 fi
6142
6143 check_optflags(){
6144     check_cflags "$@"
6145     enabled lto && check_ldflags "$@"
6146 }
6147
6148
6149 if enabled lto; then
6150     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6151     check_cflags  -flto
6152     check_ldflags -flto $cpuflags
6153     disable inline_asm_direct_symbol_refs
6154 fi
6155
6156 check_optflags $optflags
6157 check_optflags -fno-math-errno
6158 check_optflags -fno-signed-zeros
6159
6160 enabled ftrapv && check_cflags -ftrapv
6161
6162 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6163 int x;
6164 EOF
6165
6166
6167 if enabled icc; then
6168     # Just warnings, no remarks
6169     check_cflags -w1
6170     # -wd: Disable following warnings
6171     # 144, 167, 556: -Wno-pointer-sign
6172     # 188: enumerated type mixed with another type
6173     # 1292: attribute "foo" ignored
6174     # 1419: external declaration in primary source file
6175     # 10006: ignoring unknown option -fno-signed-zeros
6176     # 10148: ignoring unknown option -Wno-parentheses
6177     # 10156: ignoring option '-W'; no argument required
6178     # 13200: No EMMS instruction before call to function
6179     # 13203: No EMMS instruction before return from function
6180     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6181     # 11030: Warning unknown option --as-needed
6182     # 10156: ignoring option '-export'; no argument required
6183     check_ldflags -wd10156,11030
6184     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6185     enable ebp_available
6186     # The test above does not test linking
6187     enabled lto && disable symver_asm_label
6188     if enabled x86_32; then
6189         icc_version=$($cc -dumpversion)
6190         test ${icc_version%%.*} -ge 11 &&
6191             check_cflags -falign-stack=maintain-16-byte ||
6192             disable aligned_stack
6193     fi
6194 elif enabled ccc; then
6195     # disable some annoying warnings
6196     add_cflags -msg_disable bitnotint
6197     add_cflags -msg_disable mixfuncvoid
6198     add_cflags -msg_disable nonstandcast
6199     add_cflags -msg_disable unsupieee
6200 elif enabled gcc; then
6201     check_optflags -fno-tree-vectorize
6202     check_cflags -Werror=format-security
6203     check_cflags -Werror=implicit-function-declaration
6204     check_cflags -Werror=missing-prototypes
6205     check_cflags -Werror=return-type
6206     check_cflags -Werror=vla
6207     check_cflags -Wformat
6208     check_cflags -fdiagnostics-color=auto
6209     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6210 elif enabled llvm_gcc; then
6211     check_cflags -mllvm -stack-alignment=16
6212 elif enabled clang; then
6213     check_cflags -mllvm -stack-alignment=16
6214     check_cflags -mstack-alignment=16
6215     check_cflags -Qunused-arguments
6216     check_cflags -Werror=implicit-function-declaration
6217     check_cflags -Werror=missing-prototypes
6218     check_cflags -Werror=return-type
6219 elif enabled cparser; then
6220     add_cflags -Wno-missing-variable-declarations
6221     add_cflags -Wno-empty-statement
6222 elif enabled armcc; then
6223     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6224     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6225     # 2523: use of inline assembly is deprecated
6226     add_cflags -W${armcc_opt},--diag_suppress=2523
6227     add_cflags -W${armcc_opt},--diag_suppress=1207
6228     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6229     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6230     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6231     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6232 elif enabled tms470; then
6233     add_cflags -pds=824 -pds=837
6234     disable inline_asm
6235 elif enabled pathscale; then
6236     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6237 elif enabled_any msvc icl; then
6238     enabled x86_32 && disable aligned_stack
6239     enabled_all x86_32 debug && add_cflags -Oy-
6240     enabled debug && add_ldflags -debug
6241     enable pragma_deprecated
6242     if enabled icl; then
6243         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6244         # (correctly) on icl 13.x.
6245         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6246             add_cflags -Qansi-alias
6247         # Some inline asm is not compilable in debug
6248         if enabled debug; then
6249             disable ebp_available
6250             disable ebx_available
6251         fi
6252     fi
6253     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6254     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6255     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6256     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6257     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6258     # MSVC 2013 and newer can handle it fine.
6259     # If this declspec fails, force including stdlib.h before the restrict redefinition
6260     # happens in config.h.
6261     if [ $_restrict != restrict ]; then
6262         check_cc <<EOF || add_cflags -FIstdlib.h
6263 __declspec($_restrict) void* foo(int);
6264 EOF
6265     fi
6266     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6267     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6268     # this flag should be re-checked on newer compiler releases and put under a
6269     # version check once its fixed
6270     check_cflags -d2SSAOptimizer-
6271 fi
6272
6273 for pfx in "" host_; do
6274     varname=${pfx%_}cc_type
6275     eval "type=\$$varname"
6276     if [ $type = "msvc" ]; then
6277         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6278 static inline int foo(int a) { return a; }
6279 EOF
6280     fi
6281 done
6282
6283 case $as_type in
6284     clang)
6285         add_asflags -Qunused-arguments
6286     ;;
6287 esac
6288
6289 case $ld_type in
6290     clang)
6291         check_ldflags -Qunused-arguments
6292     ;;
6293 esac
6294
6295 case $target_os in
6296     osf1)
6297         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6298     ;;
6299     plan9)
6300         add_cppflags -Dmain=plan9_main
6301     ;;
6302 esac
6303
6304 enable frame_thread_encoder
6305
6306 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6307
6308 check_deps $CONFIG_LIST       \
6309            $CONFIG_EXTRA      \
6310            $HAVE_LIST         \
6311            $ALL_COMPONENTS    \
6312
6313 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"
6314
6315
6316 if test $target_os = "haiku"; then
6317     disable memalign
6318     disable posix_memalign
6319 fi
6320
6321 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6322     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6323     enable dxva2_lib
6324
6325 ! enabled_any memalign posix_memalign aligned_malloc &&
6326     enabled simd_align_16 && enable memalign_hack
6327
6328 # add_dep lib dep
6329 # -> enable ${lib}_deps_${dep}
6330 # -> add $dep to ${lib}_deps only once
6331 add_dep() {
6332     lib=$1
6333     dep=$2
6334     enabled "${lib}_deps_${dep}" && return 0
6335     enable  "${lib}_deps_${dep}"
6336     prepend "${lib}_deps" $dep
6337 }
6338
6339 # merge deps lib components
6340 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6341 merge_deps() {
6342     lib=$1
6343     shift
6344     for comp in $*; do
6345         enabled $comp || continue
6346         eval "dep=\"\$${comp}_deps\""
6347         for d in $dep; do
6348             add_dep $lib $d
6349         done
6350     done
6351 }
6352
6353 merge_deps libavfilter $FILTER_LIST
6354
6355 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6356
6357 for thread in $THREADS_LIST; do
6358     if enabled $thread; then
6359         test -n "$thread_type" &&
6360             die "ERROR: Only one thread type must be selected." ||
6361             thread_type="$thread"
6362     fi
6363 done
6364
6365 enabled zlib && add_cppflags -DZLIB_CONST
6366
6367 # conditional library dependencies, in linking order
6368 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6369 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6370 enabled aresample_filter    && prepend avfilter_deps "swresample"
6371 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6372 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6373 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6374 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6375 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6376 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6377 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6378 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6379 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6380 enabled pan_filter          && prepend avfilter_deps "swresample"
6381 enabled pp_filter           && prepend avfilter_deps "postproc"
6382 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6383 enabled resample_filter && prepend avfilter_deps "avresample"
6384 enabled sab_filter          && prepend avfilter_deps "swscale"
6385 enabled scale_filter    && prepend avfilter_deps "swscale"
6386 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6387 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6388 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6389 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6390 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6391 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6392 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6393 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6394 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6395
6396 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6397
6398 enabled opus_decoder    && prepend avcodec_deps "swresample"
6399
6400 expand_deps(){
6401     lib_deps=${1}_deps
6402     eval "deps=\$$lib_deps"
6403     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6404     unique $lib_deps
6405 }
6406
6407 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6408 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6409
6410 map 'expand_deps $v' $LIBRARY_LIST
6411
6412 echo "install prefix            $prefix"
6413 echo "source path               $source_path"
6414 echo "C compiler                $cc"
6415 echo "C library                 $libc_type"
6416 if test "$host_cc" != "$cc"; then
6417     echo "host C compiler           $host_cc"
6418     echo "host C library            $host_libc_type"
6419 fi
6420 echo "ARCH                      $arch ($cpu)"
6421 if test "$build_suffix" != ""; then
6422     echo "build suffix              $build_suffix"
6423 fi
6424 if test "$progs_suffix" != ""; then
6425     echo "progs suffix              $progs_suffix"
6426 fi
6427 if test "$extra_version" != ""; then
6428     echo "version string suffix     $extra_version"
6429 fi
6430 echo "big-endian                ${bigendian-no}"
6431 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6432 if enabled x86; then
6433     echo "${yasmexe}                      ${yasm-no}"
6434     echo "MMX enabled               ${mmx-no}"
6435     echo "MMXEXT enabled            ${mmxext-no}"
6436     echo "3DNow! enabled            ${amd3dnow-no}"
6437     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6438     echo "SSE enabled               ${sse-no}"
6439     echo "SSSE3 enabled             ${ssse3-no}"
6440     echo "AESNI enabled             ${aesni-no}"
6441     echo "AVX enabled               ${avx-no}"
6442     echo "XOP enabled               ${xop-no}"
6443     echo "FMA3 enabled              ${fma3-no}"
6444     echo "FMA4 enabled              ${fma4-no}"
6445     echo "i686 features enabled     ${i686-no}"
6446     echo "CMOV is fast              ${fast_cmov-no}"
6447     echo "EBX available             ${ebx_available-no}"
6448     echo "EBP available             ${ebp_available-no}"
6449 fi
6450 if enabled aarch64; then
6451     echo "NEON enabled              ${neon-no}"
6452     echo "VFP enabled               ${vfp-no}"
6453 fi
6454 if enabled arm; then
6455     echo "ARMv5TE enabled           ${armv5te-no}"
6456     echo "ARMv6 enabled             ${armv6-no}"
6457     echo "ARMv6T2 enabled           ${armv6t2-no}"
6458     echo "VFP enabled               ${vfp-no}"
6459     echo "NEON enabled              ${neon-no}"
6460     echo "THUMB enabled             ${thumb-no}"
6461 fi
6462 if enabled mips; then
6463     echo "MIPS FPU enabled          ${mipsfpu-no}"
6464     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6465     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6466     echo "MIPS MSA enabled          ${msa-no}"
6467     echo "LOONGSON MMI enabled      ${mmi-no}"
6468 fi
6469 if enabled ppc; then
6470     echo "AltiVec enabled           ${altivec-no}"
6471     echo "VSX enabled               ${vsx-no}"
6472     echo "POWER8 enabled            ${power8-no}"
6473     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6474     echo "dcbzl available           ${dcbzl-no}"
6475 fi
6476 echo "debug symbols             ${debug-no}"
6477 echo "strip symbols             ${stripping-no}"
6478 echo "optimize for size         ${small-no}"
6479 echo "optimizations             ${optimizations-no}"
6480 echo "static                    ${static-no}"
6481 echo "shared                    ${shared-no}"
6482 echo "postprocessing support    ${postproc-no}"
6483 echo "new filter support        ${avfilter-no}"
6484 echo "network support           ${network-no}"
6485 echo "threading support         ${thread_type-no}"
6486 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6487 echo "SDL2 support              ${sdl2-no}"
6488 echo "opencl enabled            ${opencl-no}"
6489 echo "JNI support               ${jni-no}"
6490 echo "texi2html enabled         ${texi2html-no}"
6491 echo "perl enabled              ${perl-no}"
6492 echo "pod2man enabled           ${pod2man-no}"
6493 echo "makeinfo enabled          ${makeinfo-no}"
6494 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6495 test -n "$random_seed" &&
6496     echo "random seed               ${random_seed}"
6497 echo
6498
6499 echo "Enabled programs:"
6500 print_enabled '' $PROGRAM_LIST | print_in_columns
6501 echo
6502
6503 echo "External libraries:"
6504 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6505 echo
6506
6507 echo "External libraries providing hardware acceleration:"
6508 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6509 echo
6510
6511 echo "Libraries:"
6512 print_enabled '' $LIBRARY_LIST | print_in_columns
6513 echo
6514
6515 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6516     echo "Enabled ${type}s:"
6517     eval list=\$$(toupper $type)_LIST
6518     print_enabled '_*' $list | print_in_columns
6519     echo
6520 done
6521
6522 license="LGPL version 2.1 or later"
6523 if enabled nonfree; then
6524     license="nonfree and unredistributable"
6525 elif enabled gplv3; then
6526     license="GPL version 3 or later"
6527 elif enabled lgplv3; then
6528     license="LGPL version 3 or later"
6529 elif enabled gpl; then
6530     license="GPL version 2 or later"
6531 fi
6532
6533 echo "License: $license"
6534
6535 echo "Creating config.mak, config.h, and doc/config.texi..."
6536
6537 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6538
6539 enabled stripping || strip="echo skipping strip"
6540
6541 config_files="$TMPH config.mak doc/config.texi"
6542
6543 cat > config.mak <<EOF
6544 # Automatically generated by configure - do not modify!
6545 ifndef FFMPEG_CONFIG_MAK
6546 FFMPEG_CONFIG_MAK=1
6547 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6548 prefix=$prefix
6549 LIBDIR=\$(DESTDIR)$libdir
6550 SHLIBDIR=\$(DESTDIR)$shlibdir
6551 INCDIR=\$(DESTDIR)$incdir
6552 BINDIR=\$(DESTDIR)$bindir
6553 DATADIR=\$(DESTDIR)$datadir
6554 DOCDIR=\$(DESTDIR)$docdir
6555 MANDIR=\$(DESTDIR)$mandir
6556 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6557 INSTALL_NAME_DIR=$install_name_dir
6558 SRC_PATH=$source_path
6559 SRC_LINK=$source_link
6560 ifndef MAIN_MAKEFILE
6561 SRC_PATH:=\$(SRC_PATH:.%=..%)
6562 endif
6563 CC_IDENT=$cc_ident
6564 ARCH=$arch
6565 INTRINSICS=$intrinsics
6566 CC=$cc
6567 CXX=$cxx
6568 AS=$as
6569 OBJCC=$objcc
6570 LD=$ld
6571 DEPCC=$dep_cc
6572 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6573 DEPAS=$as
6574 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6575 YASM=$yasmexe
6576 DEPYASM=$yasmexe
6577 AR=$ar
6578 ARFLAGS=$arflags
6579 AR_O=$ar_o
6580 RANLIB=$ranlib
6581 STRIP=$strip
6582 CP=cp -p
6583 LN_S=$ln_s
6584 CPPFLAGS=$CPPFLAGS
6585 CFLAGS=$CFLAGS
6586 CXXFLAGS=$CXXFLAGS
6587 OBJCFLAGS=$OBJCFLAGS
6588 ASFLAGS=$ASFLAGS
6589 AS_C=$AS_C
6590 AS_O=$AS_O
6591 OBJCC_C=$OBJCC_C
6592 OBJCC_E=$OBJCC_E
6593 OBJCC_O=$OBJCC_O
6594 CC_C=$CC_C
6595 CC_E=$CC_E
6596 CC_O=$CC_O
6597 CXX_C=$CXX_C
6598 CXX_O=$CXX_O
6599 LD_O=$LD_O
6600 LD_LIB=$LD_LIB
6601 LD_PATH=$LD_PATH
6602 DLLTOOL=$dlltool
6603 WINDRES=$windres
6604 DEPWINDRES=$dep_cc
6605 DOXYGEN=$doxygen
6606 LDFLAGS=$LDFLAGS
6607 LDEXEFLAGS=$LDEXEFLAGS
6608 LDLIBFLAGS=$LDLIBFLAGS
6609 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6610 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6611 YASMFLAGS=$YASMFLAGS
6612 BUILDSUF=$build_suffix
6613 PROGSSUF=$progs_suffix
6614 FULLNAME=$FULLNAME
6615 LIBPREF=$LIBPREF
6616 LIBSUF=$LIBSUF
6617 LIBNAME=$LIBNAME
6618 SLIBPREF=$SLIBPREF
6619 SLIBSUF=$SLIBSUF
6620 EXESUF=$EXESUF
6621 EXTRA_VERSION=$extra_version
6622 CCDEP=$CCDEP
6623 CXXDEP=$CXXDEP
6624 CCDEP_FLAGS=$CCDEP_FLAGS
6625 ASDEP=$ASDEP
6626 ASDEP_FLAGS=$ASDEP_FLAGS
6627 CC_DEPFLAGS=$CC_DEPFLAGS
6628 AS_DEPFLAGS=$AS_DEPFLAGS
6629 HOSTCC=$host_cc
6630 HOSTLD=$host_ld
6631 HOSTCFLAGS=$host_cflags
6632 HOSTCPPFLAGS=$host_cppflags
6633 HOSTEXESUF=$HOSTEXESUF
6634 HOSTLDFLAGS=$host_ldflags
6635 HOSTLIBS=$host_libs
6636 DEPHOSTCC=$host_cc
6637 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6638 HOSTCCDEP=$HOSTCCDEP
6639 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6640 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6641 HOSTCC_C=$HOSTCC_C
6642 HOSTCC_O=$HOSTCC_O
6643 HOSTLD_O=$HOSTLD_O
6644 TARGET_EXEC=$target_exec $target_exec_args
6645 TARGET_PATH=$target_path
6646 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6647 CFLAGS-ffplay=${sdl2_cflags}
6648 ZLIB=$($ldflags_filter -lz)
6649 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6650 EXTRALIBS=$extralibs
6651 COMPAT_OBJS=$compat_objs
6652 EXEOBJS=$exeobjs
6653 INSTALL=$install
6654 LIBTARGET=${LIBTARGET}
6655 SLIBNAME=${SLIBNAME}
6656 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6657 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6658 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6659 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6660 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6661 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6662 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6663 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6664 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6665 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6666 NOREDZONE_FLAGS=$noredzone_flags
6667 EOF
6668
6669 get_version(){
6670     lcname=lib${1}
6671     name=$(toupper $lcname)
6672     file=$source_path/$lcname/version.h
6673     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6674     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6675     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6676     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6677     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6678     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6679 }
6680
6681 map 'get_version $v' $LIBRARY_LIST
6682
6683 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6684
6685 print_program_libs(){
6686     eval "program_libs=\$${1}_libs"
6687     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6688 }
6689
6690 map 'print_program_libs $v' $PROGRAM_LIST
6691
6692 cat > $TMPH <<EOF
6693 /* Automatically generated by configure - do not modify! */
6694 #ifndef FFMPEG_CONFIG_H
6695 #define FFMPEG_CONFIG_H
6696 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6697 #define FFMPEG_LICENSE "$(c_escape $license)"
6698 #define CONFIG_THIS_YEAR 2016
6699 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6700 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6701 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6702 #define av_restrict $_restrict
6703 #define EXTERN_PREFIX "${extern_prefix}"
6704 #define EXTERN_ASM ${extern_prefix}
6705 #define BUILDSUF "$build_suffix"
6706 #define SLIBSUF "$SLIBSUF"
6707 #define HAVE_MMX2 HAVE_MMXEXT
6708 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6709 EOF
6710
6711 test -n "$assert_level" &&
6712     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6713
6714 test -n "$malloc_prefix" &&
6715     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6716
6717 if enabled yasm; then
6718     append config_files $TMPASM
6719     printf '' >$TMPASM
6720 fi
6721
6722 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6723
6724
6725 mkdir -p doc
6726 mkdir -p tests
6727 mkdir -p tests/api
6728 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6729
6730 print_config ARCH_   "$config_files" $ARCH_LIST
6731 print_config HAVE_   "$config_files" $HAVE_LIST
6732 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6733                                      $CONFIG_EXTRA      \
6734                                      $ALL_COMPONENTS    \
6735
6736 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6737 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6738
6739 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6740 cp_if_changed $TMPH config.h
6741 touch .config
6742
6743 enabled yasm && cp_if_changed $TMPASM config.asm
6744
6745 cat > $TMPH <<EOF
6746 /* Generated by ffconf */
6747 #ifndef AVUTIL_AVCONFIG_H
6748 #define AVUTIL_AVCONFIG_H
6749 EOF
6750
6751 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6752
6753 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6754
6755 cp_if_changed $TMPH libavutil/avconfig.h
6756
6757 if test -n "$WARNINGS"; then
6758     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6759     enabled fatal_warnings && exit 1
6760 fi
6761
6762 # generate the lists of enabled components
6763 print_enabled_components(){
6764     file=$1
6765     struct_name=$2
6766     name=$3
6767     shift 3
6768     echo "static const $struct_name *$name[] = {" > $TMPH
6769     for c in $*; do
6770         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6771     done
6772     echo "    NULL };" >> $TMPH
6773     cp_if_changed $TMPH $file
6774 }
6775
6776 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6777 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6778
6779 # build pkg-config files
6780
6781 lib_version(){
6782     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6783 }
6784
6785 pkgconfig_generate(){
6786     name=$1
6787     shortname=${name#lib}${build_suffix}
6788     comment=$2
6789     version=$3
6790     libs=$4
6791     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6792     requires=${requires%, }
6793     enabled ${name#lib} || return 0
6794     mkdir -p $name
6795     cat <<EOF > $name/$name${build_suffix}.pc
6796 prefix=$prefix
6797 exec_prefix=\${prefix}
6798 libdir=$libdir
6799 includedir=$incdir
6800
6801 Name: $name
6802 Description: $comment
6803 Version: $version
6804 Requires: $(enabled shared || echo $requires)
6805 Requires.private: $(enabled shared && echo $requires)
6806 Conflicts:
6807 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6808 Libs.private: $(enabled shared && echo $libs)
6809 Cflags: -I\${includedir}
6810 EOF
6811
6812 mkdir -p doc/examples/pc-uninstalled
6813 includedir=${source_path}
6814 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6815     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6816 prefix=
6817 exec_prefix=
6818 libdir=\${pcfiledir}/../../../$name
6819 includedir=${includedir}
6820
6821 Name: $name
6822 Description: $comment
6823 Version: $version
6824 Requires: $requires
6825 Conflicts:
6826 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6827 Cflags: -I\${includedir}
6828 EOF
6829 }
6830
6831 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6832 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6833 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6834 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6835 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6836 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6837 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6838 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6839 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"