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-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 112   --enable-raise-major     increase major version numbers in sonames [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --enable-avisynth        enable reading of AviSynth script files [no]
 205   --disable-bzlib          disable bzlib [autodetect]
 206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 207   --enable-frei0r          enable frei0r video filtering [no]
 208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 209                            if openssl, librtmp or gmp is not used [no]
 210   --enable-gmp             enable gmp, needed for rtmp(t)e support
 211                            if openssl or librtmp is not used [no]
 212   --enable-gnutls          enable gnutls, needed for https support
 213                            if openssl is not used [no]
 214   --disable-iconv          disable iconv [autodetect]
 215   --enable-jni             enable JNI support [no]
 216   --enable-ladspa          enable LADSPA audio filtering [no]
 217   --enable-libass          enable libass subtitles rendering,
 218                            needed for subtitles and ass filter [no]
 219   --enable-libbluray       enable BluRay reading using libbluray [no]
 220   --enable-libbs2b         enable bs2b DSP library [no]
 221   --enable-libcaca         enable textual display using libcaca [no]
 222   --enable-libcelt         enable CELT decoding via libcelt [no]
 223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 225                            and libraw1394 [no]
 226   --enable-libebur128      enable libebur128 for EBU R128 measurement,
 227                            needed for loudnorm filter [no]
 228   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 229   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 230   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 231   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 232   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 233   --enable-libgme          enable Game Music Emu via libgme [no]
 234   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 235   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 236   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 237   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 238   --enable-libmodplug      enable ModPlug via libmodplug [no]
 239   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 240   --enable-libnut          enable NUT (de)muxing via libnut,
 241                            native (de)muxer exists [no]
 242   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 243   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 244   --enable-libopencv       enable video filtering via libopencv [no]
 245   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 246   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 247   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 248   --enable-libopus         enable Opus de/encoding via libopus [no]
 249   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 250   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 251   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 252   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 253   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 254   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 255   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 256   --enable-libsoxr         enable Include libsoxr resampling [no]
 257   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 258   --enable-libssh          enable SFTP protocol via libssh [no]
 259   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 260   --enable-libtheora       enable Theora encoding via libtheora [no]
 261   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 262   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 263   --enable-libvidstab      enable video stabilization using vid.stab [no]
 264   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 265   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 266                            native implementation exists [no]
 267   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 268   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 269   --enable-libwebp         enable WebP encoding via libwebp [no]
 270   --enable-libx264         enable H.264 encoding via x264 [no]
 271   --enable-libx265         enable HEVC encoding via x265 [no]
 272   --enable-libxavs         enable AVS encoding via xavs [no]
 273   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 274   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 275   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 276   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 277   --enable-libxvid         enable Xvid encoding via xvidcore,
 278                            native MPEG-4/Xvid encoder exists [no]
 279   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 280   --enable-libzmq          enable message passing via libzmq [no]
 281   --enable-libzvbi         enable teletext support via libzvbi [no]
 282   --disable-lzma           disable lzma [autodetect]
 283   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 284   --enable-mediacodec      enable Android MediaCodec support [no]
 285   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 286   --enable-openal          enable OpenAL 1.1 capture support [no]
 287   --enable-opencl          enable OpenCL code
 288   --enable-opengl          enable OpenGL rendering [no]
 289   --enable-openssl         enable openssl, needed for https support
 290                            if gnutls is not used [no]
 291   --disable-schannel       disable SChannel SSP, needed for TLS support on
 292                            Windows if openssl and gnutls are not used [autodetect]
 293   --disable-sdl2           disable sdl2 [autodetect]
 294   --disable-securetransport disable Secure Transport, needed for TLS support
 295                            on OSX if openssl and gnutls are not used [autodetect]
 296   --enable-x11grab         enable X11 grabbing (legacy) [no]
 297   --disable-xlib           disable xlib [autodetect]
 298   --disable-zlib           disable zlib [autodetect]
 299
 300   The following libraries provide various hardware acceleration features:
 301   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 302   --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
 303   --enable-cuvid           enable Nvidia CUVID support [autodetect]
 304   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 305   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 306   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 307   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 308   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 309   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 310   --enable-omx             enable OpenMAX IL code [no]
 311   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 312   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 313   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 314   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 315   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 316
 317 Toolchain options:
 318   --arch=ARCH              select architecture [$arch]
 319   --cpu=CPU                select the minimum required CPU (affects
 320                            instruction selection, may crash on older CPUs)
 321   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 322   --progs-suffix=SUFFIX    program name suffix []
 323   --enable-cross-compile   assume a cross-compiler is used
 324   --sysroot=PATH           root of cross-build tree
 325   --sysinclude=PATH        location of cross-build system headers
 326   --target-os=OS           compiler targets OS [$target_os]
 327   --target-exec=CMD        command to run executables on target
 328   --target-path=DIR        path to view of build directory on target
 329   --target-samples=DIR     path to samples directory on target
 330   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 331   --toolchain=NAME         set tool defaults according to NAME
 332   --nm=NM                  use nm tool NM [$nm_default]
 333   --ar=AR                  use archive tool AR [$ar_default]
 334   --as=AS                  use assembler AS [$as_default]
 335   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 336   --strip=STRIP            use strip tool STRIP [$strip_default]
 337   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 338   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 339   --cc=CC                  use C compiler CC [$cc_default]
 340   --cxx=CXX                use C compiler CXX [$cxx_default]
 341   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 342   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 343   --ld=LD                  use linker LD [$ld_default]
 344   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 345   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 346   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 347   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 348   --host-cc=HOSTCC         use host C compiler HOSTCC
 349   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 350   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 351   --host-ld=HOSTLD         use host linker HOSTLD
 352   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 353   --host-libs=HLIBS        use libs HLIBS when linking for host
 354   --host-os=OS             compiler host OS [$target_os]
 355   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 356   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 357   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 358   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 359   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 360   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 361   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 362   --extra-version=STRING   version string suffix []
 363   --optflags=OPTFLAGS      override optimization-related compiler flags
 364   --build-suffix=SUFFIX    library name suffix []
 365   --enable-pic             build position-independent code
 366   --enable-thumb           compile for Thumb instruction set
 367   --enable-lto             use link-time optimization
 368   --env="ENV=override"     override the environment variables
 369
 370 Advanced options (experts only):
 371   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 372   --custom-allocator=NAME  use a supported custom allocator
 373   --disable-symver         disable symbol versioning
 374   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 375   --disable-safe-bitstream-reader
 376                            disable buffer boundary checking in bitreaders
 377                            (faster, but may crash)
 378   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 379   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 380
 381 Optimization options (experts only):
 382   --disable-asm            disable all assembly optimizations
 383   --disable-altivec        disable AltiVec optimizations
 384   --disable-vsx            disable VSX optimizations
 385   --disable-power8         disable POWER8 optimizations
 386   --disable-amd3dnow       disable 3DNow! optimizations
 387   --disable-amd3dnowext    disable 3DNow! extended optimizations
 388   --disable-mmx            disable MMX optimizations
 389   --disable-mmxext         disable MMXEXT optimizations
 390   --disable-sse            disable SSE optimizations
 391   --disable-sse2           disable SSE2 optimizations
 392   --disable-sse3           disable SSE3 optimizations
 393   --disable-ssse3          disable SSSE3 optimizations
 394   --disable-sse4           disable SSE4 optimizations
 395   --disable-sse42          disable SSE4.2 optimizations
 396   --disable-avx            disable AVX optimizations
 397   --disable-xop            disable XOP optimizations
 398   --disable-fma3           disable FMA3 optimizations
 399   --disable-fma4           disable FMA4 optimizations
 400   --disable-avx2           disable AVX2 optimizations
 401   --disable-aesni          disable AESNI optimizations
 402   --disable-armv5te        disable armv5te optimizations
 403   --disable-armv6          disable armv6 optimizations
 404   --disable-armv6t2        disable armv6t2 optimizations
 405   --disable-vfp            disable VFP optimizations
 406   --disable-neon           disable NEON optimizations
 407   --disable-inline-asm     disable use of inline assembly
 408   --disable-yasm           disable use of nasm/yasm assembly
 409   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 410   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 411   --disable-msa            disable MSA optimizations
 412   --disable-mipsfpu        disable floating point MIPS optimizations
 413   --disable-mmi            disable Loongson SIMD optimizations
 414   --disable-fast-unaligned consider unaligned accesses slow
 415
 416 Developer options (useful when working on FFmpeg itself):
 417   --disable-debug          disable debugging symbols
 418   --enable-debug=LEVEL     set the debug level [$debuglevel]
 419   --disable-optimizations  disable compiler optimizations
 420   --enable-extra-warnings  enable more compiler warnings
 421   --disable-stripping      disable stripping of executables and shared libraries
 422   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 423                            2 causes a slowdown at runtime.
 424   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 425   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 426                            leaks and errors, using the specified valgrind binary.
 427                            Cannot be combined with --target-exec
 428   --enable-ftrapv          Trap arithmetic overflows
 429   --samples=PATH           location of test samples for FATE, if not set use
 430                            \$FATE_SAMPLES at make invocation time.
 431   --enable-neon-clobber-test check NEON registers for clobbering (should be
 432                            used only for debugging purposes)
 433   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 434                            should be used only for debugging purposes)
 435   --enable-random          randomly enable/disable components
 436   --disable-random
 437   --enable-random=LIST     randomly enable/disable specific components or
 438   --disable-random=LIST    component groups. LIST is a comma-separated list
 439                            of NAME[:PROB] entries where NAME is a component
 440                            (group) and PROB the probability associated with
 441                            NAME (default 0.5).
 442   --random-seed=VALUE      seed value for --enable/disable-random
 443   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 444                            (only applies to --disable-optimizations builds)
 445
 446 NOTE: Object files are built at the place where configure is launched.
 447 EOF
 448   exit 0
 449 }
 450
 451 quotes='""'
 452 if test -t 1 && which tput >/dev/null 2>&1; then
 453     ncolors=$(tput colors)
 454     if test -n "$ncolors" && test $ncolors -ge 8; then
 455         bold_color=$(tput bold)
 456         warn_color=$(tput setaf 3)
 457         error_color=$(tput setaf 1)
 458         reset_color=$(tput sgr0)
 459     fi
 460     # 72 used instead of 80 since that's the default of pr
 461     ncols=$(tput cols)
 462 fi
 463 : ${ncols:=72}
 464
 465 log(){
 466     echo "$@" >> $logfile
 467 }
 468
 469 log_file(){
 470     log BEGIN $1
 471     pr -n -t $1 >> $logfile
 472     log END $1
 473 }
 474
 475 warn(){
 476     log "WARNING: $*"
 477     WARNINGS="${WARNINGS}WARNING: $*\n"
 478 }
 479
 480 die(){
 481     log "$@"
 482     echo "$error_color$bold_color$@$reset_color"
 483     cat <<EOF
 484
 485 If you think configure made a mistake, make sure you are using the latest
 486 version from Git.  If the latest version fails, report the problem to the
 487 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 488 EOF
 489     if disabled logging; then
 490         cat <<EOF
 491 Rerun configure with logging enabled (do not use --disable-logging), and
 492 include the log this produces with your report.
 493 EOF
 494     else
 495         cat <<EOF
 496 Include the log file "$logfile" produced by configure as this will help
 497 solve the problem.
 498 EOF
 499     fi
 500     exit 1
 501 }
 502
 503 # Avoid locale weirdness, besides we really just want to translate ASCII.
 504 toupper(){
 505     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 506 }
 507
 508 tolower(){
 509     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 510 }
 511
 512 c_escape(){
 513     echo "$*" | sed 's/["\\]/\\\0/g'
 514 }
 515
 516 sh_quote(){
 517     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 518     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 519     echo "$v"
 520 }
 521
 522 cleanws(){
 523     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 524 }
 525
 526 filter(){
 527     pat=$1
 528     shift
 529     for v; do
 530         eval "case $v in $pat) echo $v ;; esac"
 531     done
 532 }
 533
 534 filter_out(){
 535     pat=$1
 536     shift
 537     for v; do
 538         eval "case $v in $pat) ;; *) echo $v ;; esac"
 539     done
 540 }
 541
 542 map(){
 543     m=$1
 544     shift
 545     for v; do eval $m; done
 546 }
 547
 548 add_suffix(){
 549     suffix=$1
 550     shift
 551     for v; do echo ${v}${suffix}; done
 552 }
 553
 554 set_all(){
 555     value=$1
 556     shift
 557     for var in $*; do
 558         eval $var=$value
 559     done
 560 }
 561
 562 set_weak(){
 563     value=$1
 564     shift
 565     for var; do
 566         eval : \${$var:=$value}
 567     done
 568 }
 569
 570 sanitize_var_name(){
 571     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 572 }
 573
 574 set_safe(){
 575     var=$1
 576     shift
 577     eval $(sanitize_var_name "$var")='$*'
 578 }
 579
 580 get_safe(){
 581     eval echo \$$(sanitize_var_name "$1")
 582 }
 583
 584 pushvar(){
 585     for pvar in $*; do
 586         eval level=\${${pvar}_level:=0}
 587         eval ${pvar}_${level}="\$$pvar"
 588         eval ${pvar}_level=$(($level+1))
 589     done
 590 }
 591
 592 popvar(){
 593     for pvar in $*; do
 594         eval level=\${${pvar}_level:-0}
 595         test $level = 0 && continue
 596         eval level=$(($level-1))
 597         eval $pvar="\${${pvar}_${level}}"
 598         eval ${pvar}_level=$level
 599         eval unset ${pvar}_${level}
 600     done
 601 }
 602
 603 enable(){
 604     set_all yes $*
 605 }
 606
 607 disable(){
 608     set_all no $*
 609 }
 610
 611 enable_weak(){
 612     set_weak yes $*
 613 }
 614
 615 disable_weak(){
 616     set_weak no $*
 617 }
 618
 619 enable_safe(){
 620     for var; do
 621         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 622     done
 623 }
 624
 625 disable_safe(){
 626     for var; do
 627         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 628     done
 629 }
 630
 631 do_enable_deep(){
 632     for var; do
 633         enabled $var && continue
 634         eval sel="\$${var}_select"
 635         eval sgs="\$${var}_suggest"
 636         pushvar var sgs
 637         enable_deep $sel
 638         popvar sgs
 639         enable_deep_weak $sgs
 640         popvar var
 641     done
 642 }
 643
 644 enable_deep(){
 645     do_enable_deep $*
 646     enable $*
 647 }
 648
 649 enable_deep_weak(){
 650     for var; do
 651         disabled $var && continue
 652         pushvar var
 653         do_enable_deep $var
 654         popvar var
 655         enable_weak $var
 656     done
 657 }
 658
 659 enabled(){
 660     test "${1#!}" = "$1" && op='=' || op=!=
 661     eval test "x\$${1#!}" $op "xyes"
 662 }
 663
 664 disabled(){
 665     test "${1#!}" = "$1" && op='=' || op=!=
 666     eval test "x\$${1#!}" $op "xno"
 667 }
 668
 669 enabled_all(){
 670     for opt; do
 671         enabled $opt || return 1
 672     done
 673 }
 674
 675 disabled_all(){
 676     for opt; do
 677         disabled $opt || return 1
 678     done
 679 }
 680
 681 enabled_any(){
 682     for opt; do
 683         enabled $opt && return 0
 684     done
 685 }
 686
 687 disabled_any(){
 688     for opt; do
 689         disabled $opt && return 0
 690     done
 691     return 1
 692 }
 693
 694 set_default(){
 695     for opt; do
 696         eval : \${$opt:=\$${opt}_default}
 697     done
 698 }
 699
 700 is_in(){
 701     value=$1
 702     shift
 703     for var in $*; do
 704         [ $var = $value ] && return 0
 705     done
 706     return 1
 707 }
 708
 709 do_check_deps(){
 710     for cfg; do
 711         cfg="${cfg#!}"
 712         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 713         disabled ${cfg}_checking && continue
 714         enable ${cfg}_checking
 715         append allopts $cfg
 716
 717         eval dep_all="\$${cfg}_deps"
 718         eval dep_any="\$${cfg}_deps_any"
 719         eval dep_sel="\$${cfg}_select"
 720         eval dep_sgs="\$${cfg}_suggest"
 721         eval dep_ifa="\$${cfg}_if"
 722         eval dep_ifn="\$${cfg}_if_any"
 723
 724         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 725         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 726         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 727
 728         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 729         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 730         enabled_all  $dep_all || disable $cfg
 731         enabled_any  $dep_any || disable $cfg
 732         disabled_any $dep_sel && disable $cfg
 733
 734         if enabled $cfg; then
 735             enable_deep $dep_sel
 736             enable_deep_weak $dep_sgs
 737         fi
 738
 739         disable ${cfg}_checking
 740     done
 741 }
 742
 743 check_deps(){
 744     unset allopts
 745
 746     do_check_deps "$@"
 747
 748     for cfg in $allopts; do
 749         enabled $cfg || continue
 750         eval dep_extralibs="\$${cfg}_extralibs"
 751         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 752     done
 753 }
 754
 755 print_config(){
 756     pfx=$1
 757     files=$2
 758     shift 2
 759     map 'eval echo "$v \${$v:-no}"' "$@" |
 760     awk "BEGIN { split(\"$files\", files) }
 761         {
 762             c = \"$pfx\" toupper(\$1);
 763             v = \$2;
 764             sub(/yes/, 1, v);
 765             sub(/no/,  0, v);
 766             for (f in files) {
 767                 file = files[f];
 768                 if (file ~ /\\.h\$/) {
 769                     printf(\"#define %s %d\\n\", c, v) >>file;
 770                 } else if (file ~ /\\.asm\$/) {
 771                     printf(\"%%define %s %d\\n\", c, v) >>file;
 772                 } else if (file ~ /\\.mak\$/) {
 773                     n = -v ? \"\" : \"!\";
 774                     printf(\"%s%s=yes\\n\", n, c) >>file;
 775                 } else if (file ~ /\\.texi\$/) {
 776                     pre = -v ? \"\" : \"@c \";
 777                     yesno = \$2;
 778                     c2 = tolower(c);
 779                     gsub(/_/, \"-\", c2);
 780                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 781                 }
 782             }
 783         }"
 784 }
 785
 786 print_enabled(){
 787     suf=$1
 788     shift
 789     for v; do
 790         enabled $v && printf "%s\n" ${v%$suf}
 791     done
 792 }
 793
 794 append(){
 795     var=$1
 796     shift
 797     eval "$var=\"\$$var $*\""
 798 }
 799
 800 prepend(){
 801     var=$1
 802     shift
 803     eval "$var=\"$* \$$var\""
 804 }
 805
 806 unique(){
 807     var=$1
 808     uniq_list=""
 809     for tok in $(eval echo \$$var); do
 810         uniq_list="$(filter_out $tok $uniq_list) $tok"
 811     done
 812     eval "$var=\"${uniq_list}\""
 813 }
 814
 815 add_cppflags(){
 816     append CPPFLAGS "$@"
 817 }
 818
 819 add_cflags(){
 820     append CFLAGS $($cflags_filter "$@")
 821 }
 822
 823 add_cxxflags(){
 824     append CXXFLAGS $($cflags_filter "$@")
 825 }
 826
 827 add_asflags(){
 828     append ASFLAGS $($asflags_filter "$@")
 829 }
 830
 831 add_objcflags(){
 832     append OBJCFLAGS $($objcflags_filter "$@")
 833 }
 834
 835 add_ldflags(){
 836     append LDFLAGS $($ldflags_filter "$@")
 837 }
 838
 839 add_ldexeflags(){
 840     append LDEXEFLAGS $($ldflags_filter "$@")
 841 }
 842
 843 add_ldlibflags(){
 844     append LDLIBFLAGS $($ldflags_filter "$@")
 845 }
 846
 847 add_stripflags(){
 848     append ASMSTRIPFLAGS "$@"
 849 }
 850
 851 add_extralibs(){
 852     prepend extralibs $($ldflags_filter "$@")
 853 }
 854
 855 add_host_cppflags(){
 856     append host_cppflags "$@"
 857 }
 858
 859 add_host_cflags(){
 860     append host_cflags $($host_cflags_filter "$@")
 861 }
 862
 863 add_host_ldflags(){
 864     append host_ldflags $($host_ldflags_filter "$@")
 865 }
 866
 867 add_compat(){
 868     append compat_objs $1
 869     shift
 870     map 'add_cppflags -D$v' "$@"
 871 }
 872
 873 check_cmd(){
 874     log "$@"
 875     "$@" >> $logfile 2>&1
 876 }
 877
 878 check_stat(){
 879     log check_stat "$@"
 880     stat "$1" >> $logfile 2>&1
 881 }
 882
 883 cc_o(){
 884     eval printf '%s\\n' $CC_O
 885 }
 886
 887 cc_e(){
 888     eval printf '%s\\n' $CC_E
 889 }
 890
 891 check_cc(){
 892     log check_cc "$@"
 893     cat > $TMPC
 894     log_file $TMPC
 895     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 896 }
 897
 898 check_cxx(){
 899     log check_cxx "$@"
 900     cat > $TMPCPP
 901     log_file $TMPCPP
 902     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 903 }
 904
 905 check_objcc(){
 906     log check_objcc "$@"
 907     cat > $TMPM
 908     log_file $TMPM
 909     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 910 }
 911
 912 check_cpp(){
 913     log check_cpp "$@"
 914     cat > $TMPC
 915     log_file $TMPC
 916     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 917 }
 918
 919 as_o(){
 920     eval printf '%s\\n' $AS_O
 921 }
 922
 923 check_as(){
 924     log check_as "$@"
 925     cat > $TMPS
 926     log_file $TMPS
 927     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 928 }
 929
 930 check_inline_asm(){
 931     log check_inline_asm "$@"
 932     name="$1"
 933     code="$2"
 934     shift 2
 935     disable $name
 936     check_cc "$@" <<EOF && enable $name
 937 void foo(void){ __asm__ volatile($code); }
 938 EOF
 939 }
 940
 941 check_inline_asm_flags(){
 942     log check_inline_asm_flags "$@"
 943     name="$1"
 944     code="$2"
 945     flags=''
 946     shift 2
 947     while [ "$1" != "" ]; do
 948       append flags $1
 949       shift
 950     done;
 951     disable $name
 952     cat > $TMPC <<EOF
 953 void foo(void){ __asm__ volatile($code); }
 954 EOF
 955     log_file $TMPC
 956     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 957     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 958 }
 959
 960 check_insn(){
 961     log check_insn "$@"
 962     check_inline_asm ${1}_inline "\"$2\""
 963     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 964 }
 965
 966 check_yasm(){
 967     log check_yasm "$@"
 968     echo "$1" > $TMPS
 969     log_file $TMPS
 970     shift 1
 971     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 972 }
 973
 974 ld_o(){
 975     eval printf '%s\\n' $LD_O
 976 }
 977
 978 check_ld(){
 979     log check_ld "$@"
 980     type=$1
 981     shift 1
 982     flags=$(filter_out '-l*|*.so' $@)
 983     libs=$(filter '-l*|*.so' $@)
 984     check_$type $($cflags_filter $flags) || return
 985     flags=$($ldflags_filter $flags)
 986     libs=$($ldflags_filter $libs)
 987     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 988 }
 989
 990 print_include(){
 991     hdr=$1
 992     test "${hdr%.h}" = "${hdr}" &&
 993         echo "#include $hdr"    ||
 994         echo "#include <$hdr>"
 995 }
 996
 997 check_code(){
 998     log check_code "$@"
 999     check=$1
1000     headers=$2
1001     code=$3
1002     shift 3
1003     {
1004         for hdr in $headers; do
1005             print_include $hdr
1006         done
1007         echo "int main(void) { $code; return 0; }"
1008     } | check_$check "$@"
1009 }
1010
1011 check_cppflags(){
1012     log check_cppflags "$@"
1013     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1014 int x;
1015 EOF
1016 }
1017
1018 test_cflags(){
1019     log test_cflags "$@"
1020     set -- $($cflags_filter "$@")
1021     check_cc "$@" <<EOF
1022 int x;
1023 EOF
1024 }
1025
1026 check_cflags(){
1027     log check_cflags "$@"
1028     test_cflags "$@" && add_cflags "$@"
1029 }
1030
1031 check_cxxflags(){
1032     log check_cxxflags "$@"
1033     set -- $($cflags_filter "$@")
1034     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1035 int x;
1036 EOF
1037 }
1038
1039 test_objcflags(){
1040     log test_cflags "$@"
1041     set -- $($cflags_filter "$@")
1042     check_objcc "$@" <<EOF
1043 int x;
1044 EOF
1045 }
1046
1047 check_objcflags(){
1048     log check_cflags "$@"
1049     test_objcflags "$@" && add_objcflags "$@"
1050 }
1051
1052 test_ldflags(){
1053     log test_ldflags "$@"
1054     check_ld "cc" "$@" <<EOF
1055 int main(void){ return 0; }
1056 EOF
1057 }
1058
1059 check_ldflags(){
1060     log check_ldflags "$@"
1061     test_ldflags "$@" && add_ldflags "$@"
1062 }
1063
1064 test_stripflags(){
1065     log test_stripflags "$@"
1066     # call check_cc to get a fresh TMPO
1067     check_cc <<EOF
1068 int main(void) { return 0; }
1069 EOF
1070     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1071 }
1072
1073 check_stripflags(){
1074     log check_stripflags "$@"
1075     test_stripflags "$@" && add_stripflags "$@"
1076 }
1077
1078 check_header(){
1079     log check_header "$@"
1080     header=$1
1081     shift
1082     disable_safe $header
1083     check_cpp "$@" <<EOF && enable_safe $header
1084 #include <$header>
1085 int x;
1086 EOF
1087 }
1088
1089 check_header_objcc(){
1090     log check_header_objcc "$@"
1091     rm -f -- "$TMPO"
1092     header=$1
1093     shift
1094     disable_safe $header
1095     {
1096        echo "#include <$header>"
1097        echo "int main(void) { return 0; }"
1098     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1099 }
1100
1101 check_func(){
1102     log check_func "$@"
1103     func=$1
1104     shift
1105     disable $func
1106     check_ld "cc" "$@" <<EOF && enable $func
1107 extern int $func();
1108 int main(void){ $func(); }
1109 EOF
1110 }
1111
1112 check_complexfunc(){
1113     log check_complexfunc "$@"
1114     func=$1
1115     narg=$2
1116     shift 2
1117     test $narg = 2 && args="f, g" || args="f * I"
1118     disable $func
1119     check_ld "cc" "$@" <<EOF && enable $func
1120 #include <complex.h>
1121 #include <math.h>
1122 float foo(complex float f, complex float g) { return $func($args); }
1123 int main(void){ return (int) foo; }
1124 EOF
1125 }
1126
1127 check_mathfunc(){
1128     log check_mathfunc "$@"
1129     func=$1
1130     narg=$2
1131     shift 2
1132     test $narg = 2 && args="f, g" || args="f"
1133     disable $func
1134     check_ld "cc" "$@" <<EOF && enable $func
1135 #include <math.h>
1136 float foo(float f, float g) { return $func($args); }
1137 int main(void){ return (int) foo; }
1138 EOF
1139 }
1140
1141 check_func_headers(){
1142     log check_func_headers "$@"
1143     headers=$1
1144     funcs=$2
1145     shift 2
1146     {
1147         for hdr in $headers; do
1148             print_include $hdr
1149         done
1150         for func in $funcs; do
1151             echo "long check_$func(void) { return (long) $func; }"
1152         done
1153         echo "int main(void) { return 0; }"
1154     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1155 }
1156
1157 check_class_headers_cpp(){
1158     log check_class_headers_cpp "$@"
1159     headers=$1
1160     classes=$2
1161     shift 2
1162     {
1163         for hdr in $headers; do
1164             echo "#include <$hdr>"
1165         done
1166         echo "int main(void) { "
1167         i=1
1168         for class in $classes; do
1169             echo "$class obj$i;"
1170             i=$(expr $i + 1)
1171         done
1172         echo "return 0; }"
1173     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1174 }
1175
1176 check_cpp_condition(){
1177     log check_cpp_condition "$@"
1178     header=$1
1179     condition=$2
1180     shift 2
1181     check_cpp "$@" <<EOF
1182 #include <$header>
1183 #if !($condition)
1184 #error "unsatisfied condition: $condition"
1185 #endif
1186 EOF
1187 }
1188
1189 check_lib(){
1190     log check_lib "$@"
1191     header="$1"
1192     func="$2"
1193     shift 2
1194     check_header $header && check_func $func "$@" && add_extralibs "$@"
1195 }
1196
1197 check_lib2(){
1198     log check_lib2 "$@"
1199     headers="$1"
1200     funcs="$2"
1201     shift 2
1202     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1203 }
1204
1205 check_lib_cpp(){
1206     log check_lib_cpp "$@"
1207     headers="$1"
1208     classes="$2"
1209     shift 2
1210     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1211 }
1212
1213 check_pkg_config(){
1214     log check_pkg_config "$@"
1215     pkgandversion="$1"
1216     pkg="${1%% *}"
1217     headers="$2"
1218     funcs="$3"
1219     shift 3
1220     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1221     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1222     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1223     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1224         set_safe "${pkg}_cflags" $pkg_cflags   &&
1225         set_safe "${pkg}_libs"   $pkg_libs
1226 }
1227
1228 check_exec(){
1229     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1230 }
1231
1232 check_exec_crash(){
1233     code=$(cat)
1234
1235     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1236     # are safe but may not be available everywhere.  Thus we use
1237     # raise(SIGTERM) instead.  The check is run in a subshell so we
1238     # can redirect the "Terminated" message from the shell.  SIGBUS
1239     # is not defined by standard C so it is used conditionally.
1240
1241     (check_exec "$@") >> $logfile 2>&1 <<EOF
1242 #include <signal.h>
1243 static void sighandler(int sig){
1244     raise(SIGTERM);
1245 }
1246 int foo(void){
1247     $code
1248 }
1249 int (*func_ptr)(void) = foo;
1250 int main(void){
1251     signal(SIGILL, sighandler);
1252     signal(SIGFPE, sighandler);
1253     signal(SIGSEGV, sighandler);
1254 #ifdef SIGBUS
1255     signal(SIGBUS, sighandler);
1256 #endif
1257     return func_ptr();
1258 }
1259 EOF
1260 }
1261
1262 check_type(){
1263     log check_type "$@"
1264     headers=$1
1265     type=$2
1266     shift 2
1267     disable_safe "$type"
1268     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1269 }
1270
1271 check_struct(){
1272     log check_struct "$@"
1273     headers=$1
1274     struct=$2
1275     member=$3
1276     shift 3
1277     disable_safe "${struct}_${member}"
1278     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1279         enable_safe "${struct}_${member}"
1280 }
1281
1282 check_builtin(){
1283     log check_builtin "$@"
1284     name=$1
1285     headers=$2
1286     builtin=$3
1287     shift 3
1288     disable "$name"
1289     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1290 }
1291
1292 check_compile_assert(){
1293     log check_compile_assert "$@"
1294     name=$1
1295     headers=$2
1296     condition=$3
1297     shift 3
1298     disable "$name"
1299     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1300 }
1301
1302 require(){
1303     name="$1"
1304     header="$2"
1305     func="$3"
1306     shift 3
1307     check_lib $header $func "$@" || die "ERROR: $name not found"
1308 }
1309
1310 require2(){
1311     name="$1"
1312     headers="$2"
1313     func="$3"
1314     shift 3
1315     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1316 }
1317
1318 require_cpp(){
1319     name="$1"
1320     headers="$2"
1321     classes="$3"
1322     shift 3
1323     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1324 }
1325
1326 use_pkg_config(){
1327     pkg="$1"
1328     check_pkg_config "$@" || return 1
1329     add_cflags    $(get_safe "${pkg}_cflags")
1330     add_extralibs $(get_safe "${pkg}_libs")
1331 }
1332
1333 require_pkg_config(){
1334     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1335 }
1336
1337 require_libfreetype(){
1338     log require_libfreetype "$@"
1339     pkg="freetype2"
1340     check_cmd $pkg_config --exists --print-errors $pkg \
1341       || die "ERROR: $pkg not found"
1342     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1343     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1344     {
1345         echo "#include <ft2build.h>"
1346         echo "#include FT_FREETYPE_H"
1347         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1348         echo "int main(void) { return 0; }"
1349     } | check_ld "cc" $pkg_cflags $pkg_libs \
1350       && set_safe "${pkg}_cflags" $pkg_cflags \
1351       && set_safe "${pkg}_libs"   $pkg_libs \
1352       || die "ERROR: $pkg not found"
1353     add_cflags    $(get_safe "${pkg}_cflags")
1354     add_extralibs $(get_safe "${pkg}_libs")
1355 }
1356
1357 hostcc_e(){
1358     eval printf '%s\\n' $HOSTCC_E
1359 }
1360
1361 hostcc_o(){
1362     eval printf '%s\\n' $HOSTCC_O
1363 }
1364
1365 check_host_cc(){
1366     log check_host_cc "$@"
1367     cat > $TMPC
1368     log_file $TMPC
1369     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1370 }
1371
1372 check_host_cpp(){
1373     log check_host_cpp "$@"
1374     cat > $TMPC
1375     log_file $TMPC
1376     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1377 }
1378
1379 check_host_cppflags(){
1380     log check_host_cppflags "$@"
1381     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1382 int x;
1383 EOF
1384 }
1385
1386 check_host_cflags(){
1387     log check_host_cflags "$@"
1388     set -- $($host_cflags_filter "$@")
1389     check_host_cc "$@" <<EOF && append host_cflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cpp_condition(){
1395     log check_host_cpp_condition "$@"
1396     header=$1
1397     condition=$2
1398     shift 2
1399     check_host_cpp "$@" <<EOF
1400 #include <$header>
1401 #if !($condition)
1402 #error "unsatisfied condition: $condition"
1403 #endif
1404 EOF
1405 }
1406
1407 cp_if_changed(){
1408     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1409     mkdir -p "$(dirname $2)"
1410     $cp_f "$1" "$2"
1411 }
1412
1413 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1414 # system-dependent things.
1415
1416 AVCODEC_COMPONENTS="
1417     bsfs
1418     decoders
1419     encoders
1420     hwaccels
1421     parsers
1422 "
1423
1424 AVDEVICE_COMPONENTS="
1425     indevs
1426     outdevs
1427 "
1428 AVFILTER_COMPONENTS="
1429     filters
1430 "
1431 AVFORMAT_COMPONENTS="
1432     demuxers
1433     muxers
1434     protocols
1435 "
1436
1437 AVRESAMPLE_COMPONENTS=""
1438 AVUTIL_COMPONENTS=""
1439
1440 COMPONENT_LIST="
1441     $AVCODEC_COMPONENTS
1442     $AVDEVICE_COMPONENTS
1443     $AVFILTER_COMPONENTS
1444     $AVFORMAT_COMPONENTS
1445     $AVRESAMPLE_COMPONENTS
1446     $AVUTIL_COMPONENTS
1447 "
1448
1449 EXAMPLE_LIST="
1450     avio_dir_cmd_example
1451     avio_reading_example
1452     decoding_encoding_example
1453     demuxing_decoding_example
1454     extract_mvs_example
1455     filter_audio_example
1456     filtering_audio_example
1457     filtering_video_example
1458     http_multiclient_example
1459     metadata_example
1460     muxing_example
1461     qsvdec_example
1462     remuxing_example
1463     resampling_audio_example
1464     scaling_video_example
1465     transcode_aac_example
1466     transcoding_example
1467 "
1468
1469 EXTERNAL_LIBRARY_LIST="
1470     avisynth
1471     bzlib
1472     chromaprint
1473     crystalhd
1474     decklink
1475     frei0r
1476     gcrypt
1477     gmp
1478     gnutls
1479     iconv
1480     jni
1481     ladspa
1482     libass
1483     libbluray
1484     libbs2b
1485     libcaca
1486     libcdio
1487     libcelt
1488     libdc1394
1489     libebur128
1490     libfdk_aac
1491     libflite
1492     libfontconfig
1493     libfreetype
1494     libfribidi
1495     libgme
1496     libgsm
1497     libiec61883
1498     libilbc
1499     libkvazaar
1500     libmodplug
1501     libmp3lame
1502     libnut
1503     libopencore_amrnb
1504     libopencore_amrwb
1505     libopencv
1506     libopenh264
1507     libopenjpeg
1508     libopenmpt
1509     libopus
1510     libpulse
1511     librtmp
1512     librubberband
1513     libschroedinger
1514     libshine
1515     libsmbclient
1516     libsnappy
1517     libsoxr
1518     libspeex
1519     libssh
1520     libtesseract
1521     libtheora
1522     libtwolame
1523     libv4l2
1524     libvidstab
1525     libvo_amrwbenc
1526     libvorbis
1527     libvpx
1528     libwavpack
1529     libwebp
1530     libx264
1531     libx265
1532     libxavs
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     libxvid
1538     libzimg
1539     libzmq
1540     libzvbi
1541     lzma
1542     mediacodec
1543     netcdf
1544     openal
1545     opencl
1546     opengl
1547     openssl
1548     schannel
1549     sdl
1550     sdl2
1551     securetransport
1552     videotoolbox
1553     x11grab
1554     xlib
1555     zlib
1556 "
1557
1558 HWACCEL_LIBRARY_LIST="
1559     audiotoolbox
1560     cuda
1561     cuvid
1562     d3d11va
1563     dxva2
1564     libmfx
1565     libnpp
1566     mmal
1567     nvenc
1568     omx
1569     vaapi
1570     vda
1571     vdpau
1572     videotoolbox_hwaccel
1573     xvmc
1574 "
1575
1576 DOCUMENT_LIST="
1577     doc
1578     htmlpages
1579     manpages
1580     podpages
1581     txtpages
1582 "
1583
1584 FEATURE_LIST="
1585     ftrapv
1586     gray
1587     hardcoded_tables
1588     omx_rpi
1589     runtime_cpudetect
1590     safe_bitstream_reader
1591     shared
1592     small
1593     static
1594     swscale_alpha
1595 "
1596
1597 LIBRARY_LIST="
1598     avcodec
1599     avdevice
1600     avfilter
1601     avformat
1602     avresample
1603     avutil
1604     postproc
1605     swresample
1606     swscale
1607 "
1608
1609 LICENSE_LIST="
1610     gpl
1611     nonfree
1612     version3
1613 "
1614
1615 PROGRAM_LIST="
1616     ffplay
1617     ffprobe
1618     ffserver
1619     ffmpeg
1620 "
1621
1622 SUBSYSTEM_LIST="
1623     dct
1624     dwt
1625     error_resilience
1626     faan
1627     fast_unaligned
1628     fft
1629     lsp
1630     lzo
1631     mdct
1632     pixelutils
1633     network
1634     rdft
1635 "
1636
1637 CONFIG_LIST="
1638     $COMPONENT_LIST
1639     $DOCUMENT_LIST
1640     $EXAMPLE_LIST
1641     $EXTERNAL_LIBRARY_LIST
1642     $HWACCEL_LIBRARY_LIST
1643     $FEATURE_LIST
1644     $LICENSE_LIST
1645     $LIBRARY_LIST
1646     $PROGRAM_LIST
1647     $SUBSYSTEM_LIST
1648     fontconfig
1649     incompatible_libav_abi
1650     memalign_hack
1651     memory_poisoning
1652     neon_clobber_test
1653     pic
1654     pod2man
1655     raise_major
1656     thumb
1657     valgrind_backtrace
1658     xmm_clobber_test
1659 "
1660
1661 THREADS_LIST="
1662     pthreads
1663     os2threads
1664     w32threads
1665 "
1666
1667 ATOMICS_LIST="
1668     atomics_gcc
1669     atomics_suncc
1670     atomics_win32
1671 "
1672
1673 ARCH_LIST="
1674     aarch64
1675     alpha
1676     arm
1677     avr32
1678     avr32_ap
1679     avr32_uc
1680     bfin
1681     ia64
1682     m68k
1683     mips
1684     mips64
1685     parisc
1686     ppc
1687     ppc64
1688     s390
1689     sh4
1690     sparc
1691     sparc64
1692     tilegx
1693     tilepro
1694     tomi
1695     x86
1696     x86_32
1697     x86_64
1698 "
1699
1700 ARCH_EXT_LIST_ARM="
1701     armv5te
1702     armv6
1703     armv6t2
1704     armv8
1705     neon
1706     vfp
1707     vfpv3
1708     setend
1709 "
1710
1711 ARCH_EXT_LIST_MIPS="
1712     mipsfpu
1713     mips32r2
1714     mips32r5
1715     mips64r2
1716     mips32r6
1717     mips64r6
1718     mipsdsp
1719     mipsdspr2
1720     msa
1721 "
1722
1723 ARCH_EXT_LIST_LOONGSON="
1724     loongson2
1725     loongson3
1726     mmi
1727 "
1728
1729 ARCH_EXT_LIST_X86_SIMD="
1730     aesni
1731     amd3dnow
1732     amd3dnowext
1733     avx
1734     avx2
1735     fma3
1736     fma4
1737     mmx
1738     mmxext
1739     sse
1740     sse2
1741     sse3
1742     sse4
1743     sse42
1744     ssse3
1745     xop
1746 "
1747
1748 ARCH_EXT_LIST_PPC="
1749     altivec
1750     dcbzl
1751     ldbrx
1752     power8
1753     ppc4xx
1754     vsx
1755 "
1756
1757 ARCH_EXT_LIST_X86="
1758     $ARCH_EXT_LIST_X86_SIMD
1759     cpunop
1760     i686
1761 "
1762
1763 ARCH_EXT_LIST="
1764     $ARCH_EXT_LIST_ARM
1765     $ARCH_EXT_LIST_PPC
1766     $ARCH_EXT_LIST_X86
1767     $ARCH_EXT_LIST_MIPS
1768     $ARCH_EXT_LIST_LOONGSON
1769 "
1770
1771 ARCH_FEATURES="
1772     aligned_stack
1773     fast_64bit
1774     fast_clz
1775     fast_cmov
1776     local_aligned_8
1777     local_aligned_16
1778     local_aligned_32
1779     simd_align_16
1780 "
1781
1782 BUILTIN_LIST="
1783     atomic_cas_ptr
1784     atomic_compare_exchange
1785     machine_rw_barrier
1786     MemoryBarrier
1787     mm_empty
1788     rdtsc
1789     sarestart
1790     sem_timedwait
1791     sync_val_compare_and_swap
1792 "
1793 HAVE_LIST_CMDLINE="
1794     inline_asm
1795     symver
1796     yasm
1797 "
1798
1799 HAVE_LIST_PUB="
1800     bigendian
1801     fast_unaligned
1802     incompatible_libav_abi
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     h264pred
2060     h264qpel
2061     hpeldsp
2062     huffman
2063     huffyuvdsp
2064     huffyuvencdsp
2065     idctdsp
2066     iirfilter
2067     imdct15
2068     intrax8
2069     iso_media
2070     ividsp
2071     jpegtables
2072     lgplv3
2073     libx262
2074     llauddsp
2075     llviddsp
2076     lpc
2077     lzf
2078     me_cmp
2079     mpeg_er
2080     mpegaudio
2081     mpegaudiodsp
2082     mpegvideo
2083     mpegvideoenc
2084     mss34dsp
2085     pixblockdsp
2086     qpeldsp
2087     qsv
2088     qsvdec
2089     qsvenc
2090     rangecoder
2091     riffdec
2092     riffenc
2093     rtpdec
2094     rtpenc_chain
2095     rv34dsp
2096     sinewin
2097     snappy
2098     srtp
2099     startcode
2100     texturedsp
2101     texturedspenc
2102     tpeldsp
2103     vaapi_encode
2104     vc1dsp
2105     videodsp
2106     vp3dsp
2107     vp56dsp
2108     vp8dsp
2109     vt_bt2020
2110     wma_freqs
2111     wmv2dsp
2112 "
2113
2114 CMDLINE_SELECT="
2115     $ARCH_EXT_LIST
2116     $CONFIG_LIST
2117     $HAVE_LIST_CMDLINE
2118     $THREADS_LIST
2119     asm
2120     cross_compile
2121     debug
2122     extra_warnings
2123     logging
2124     lto
2125     optimizations
2126     rpath
2127     stripping
2128 "
2129
2130 PATHS_LIST="
2131     bindir
2132     datadir
2133     docdir
2134     incdir
2135     libdir
2136     mandir
2137     pkgconfigdir
2138     prefix
2139     shlibdir
2140     install_name_dir
2141 "
2142
2143 CMDLINE_SET="
2144     $PATHS_LIST
2145     ar
2146     arch
2147     as
2148     assert_level
2149     build_suffix
2150     cc
2151     objcc
2152     cpu
2153     cross_prefix
2154     custom_allocator
2155     cxx
2156     dep_cc
2157     doxygen
2158     env
2159     extra_version
2160     gas
2161     host_cc
2162     host_cflags
2163     host_ld
2164     host_ldflags
2165     host_libs
2166     host_os
2167     install
2168     ld
2169     ln_s
2170     logfile
2171     malloc_prefix
2172     nm
2173     optflags
2174     pkg_config
2175     pkg_config_flags
2176     progs_suffix
2177     random_seed
2178     ranlib
2179     samples
2180     strip
2181     sws_max_filter_size
2182     sysinclude
2183     sysroot
2184     target_exec
2185     target_os
2186     target_path
2187     target_samples
2188     tempprefix
2189     toolchain
2190     valgrind
2191     yasmexe
2192 "
2193
2194 CMDLINE_APPEND="
2195     extra_cflags
2196     extra_cxxflags
2197     extra_objcflags
2198     host_cppflags
2199 "
2200
2201 # code dependency declarations
2202
2203 # architecture extensions
2204
2205 armv5te_deps="arm"
2206 armv6_deps="arm"
2207 armv6t2_deps="arm"
2208 armv8_deps="aarch64"
2209 neon_deps_any="aarch64 arm"
2210 intrinsics_neon_deps="neon"
2211 vfp_deps_any="aarch64 arm"
2212 vfpv3_deps="vfp"
2213 setend_deps="arm"
2214
2215 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2216
2217 loongson2_deps="mips"
2218 loongson3_deps="mips"
2219 mipsfpu_deps="mips"
2220 mipsdsp_deps="mips"
2221 mipsdspr2_deps="mips"
2222 mips32r2_deps="mips"
2223 mips32r5_deps="mips"
2224 mips32r6_deps="mips"
2225 mips64r2_deps="mips"
2226 mips64r6_deps="mips"
2227 msa_deps="mipsfpu"
2228 mmi_deps="mips"
2229
2230 altivec_deps="ppc"
2231 dcbzl_deps="ppc"
2232 ldbrx_deps="ppc"
2233 ppc4xx_deps="ppc"
2234 vsx_deps="altivec"
2235 power8_deps="vsx"
2236
2237 cpunop_deps="i686"
2238 x86_64_select="i686"
2239 x86_64_suggest="fast_cmov"
2240
2241 amd3dnow_deps="mmx"
2242 amd3dnowext_deps="amd3dnow"
2243 i686_deps="x86"
2244 mmx_deps="x86"
2245 mmxext_deps="mmx"
2246 sse_deps="mmxext"
2247 sse2_deps="sse"
2248 sse3_deps="sse2"
2249 ssse3_deps="sse3"
2250 sse4_deps="ssse3"
2251 sse42_deps="sse4"
2252 aesni_deps="sse42"
2253 avx_deps="sse42"
2254 xop_deps="avx"
2255 fma3_deps="avx"
2256 fma4_deps="avx"
2257 avx2_deps="avx"
2258
2259 mmx_external_deps="yasm"
2260 mmx_inline_deps="inline_asm"
2261 mmx_suggest="mmx_external mmx_inline"
2262
2263 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2264     eval dep=\$${ext}_deps
2265     eval ${ext}_external_deps='"${dep}_external"'
2266     eval ${ext}_inline_deps='"${dep}_inline"'
2267     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2268 done
2269
2270 aligned_stack_if_any="aarch64 ppc x86"
2271 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2272 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2273 fast_unaligned_if_any="aarch64 ppc x86"
2274 simd_align_16_if_any="altivec neon sse"
2275
2276 # system capabilities
2277 symver_if_any="symver_asm_label symver_gnu_asm"
2278 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2279
2280 # threading support
2281 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2282 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2283 atomics_win32_if="MemoryBarrier"
2284 atomics_native_if_any="$ATOMICS_LIST"
2285 w32threads_deps="atomics_native"
2286 threads_if_any="$THREADS_LIST"
2287
2288 # subsystems
2289 dct_select="rdft"
2290 dirac_parse_select="golomb"
2291 error_resilience_select="me_cmp"
2292 faandct_deps="faan fdctdsp"
2293 faanidct_deps="faan idctdsp"
2294 h264dsp_select="startcode"
2295 frame_thread_encoder_deps="encoders threads"
2296 intrax8_select="blockdsp idctdsp"
2297 mdct_select="fft"
2298 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2299 mpeg_er_select="error_resilience"
2300 mpegaudio_select="mpegaudiodsp"
2301 mpegaudiodsp_select="dct"
2302 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2303 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2304 vc1dsp_select="h264chroma qpeldsp startcode"
2305 rdft_select="fft"
2306
2307 # decoders / encoders
2308 aac_decoder_select="imdct15 mdct sinewin"
2309 aac_fixed_decoder_select="mdct sinewin"
2310 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2311 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2312 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2313 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2314 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2315 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2316 adpcm_g722_decoder_select="g722dsp"
2317 adpcm_g722_encoder_select="g722dsp"
2318 aic_decoder_select="golomb idctdsp"
2319 alac_encoder_select="lpc"
2320 als_decoder_select="bswapdsp"
2321 amrnb_decoder_select="lsp"
2322 amrwb_decoder_select="lsp"
2323 amv_decoder_select="sp5x_decoder exif"
2324 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2325 ape_decoder_select="bswapdsp llauddsp"
2326 apng_decoder_select="zlib"
2327 apng_encoder_select="huffyuvencdsp zlib"
2328 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2329 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2330 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2331 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2332 atrac1_decoder_select="mdct sinewin"
2333 atrac3_decoder_select="mdct"
2334 atrac3p_decoder_select="mdct sinewin"
2335 avrn_decoder_select="exif jpegtables"
2336 bink_decoder_select="blockdsp hpeldsp"
2337 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2338 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2339 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2340 cllc_decoder_select="bswapdsp"
2341 comfortnoise_encoder_select="lpc"
2342 cook_decoder_select="audiodsp mdct sinewin"
2343 cscd_decoder_select="lzo"
2344 cscd_decoder_suggest="zlib"
2345 dca_decoder_select="mdct"
2346 dds_decoder_select="texturedsp"
2347 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2348 dnxhd_decoder_select="blockdsp idctdsp"
2349 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2350 dvvideo_decoder_select="dvprofile idctdsp"
2351 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2352 dxa_decoder_select="zlib"
2353 dxv_decoder_select="lzf texturedsp"
2354 eac3_decoder_select="ac3_decoder"
2355 eac3_encoder_select="ac3_encoder"
2356 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2357 eatgq_decoder_select="aandcttables"
2358 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2359 exr_decoder_select="zlib"
2360 ffv1_decoder_select="golomb rangecoder"
2361 ffv1_encoder_select="rangecoder"
2362 ffvhuff_decoder_select="huffyuv_decoder"
2363 ffvhuff_encoder_select="huffyuv_encoder"
2364 fic_decoder_select="golomb"
2365 flac_decoder_select="flacdsp golomb"
2366 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2367 flashsv2_decoder_select="zlib"
2368 flashsv2_encoder_select="zlib"
2369 flashsv_decoder_select="zlib"
2370 flashsv_encoder_select="zlib"
2371 flv_decoder_select="h263_decoder"
2372 flv_encoder_select="h263_encoder"
2373 fourxm_decoder_select="blockdsp bswapdsp"
2374 fraps_decoder_select="bswapdsp huffman"
2375 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2376 g729_decoder_select="audiodsp"
2377 h261_decoder_select="mpegvideo"
2378 h261_encoder_select="aandcttables mpegvideoenc"
2379 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2380 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2381 h263i_decoder_select="h263_decoder"
2382 h263p_decoder_select="h263_decoder"
2383 h263p_encoder_select="h263_encoder"
2384 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2385 h264_decoder_suggest="error_resilience"
2386 hap_decoder_select="snappy texturedsp"
2387 hap_encoder_deps="libsnappy"
2388 hap_encoder_select="texturedspenc"
2389 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2390 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2391 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2392 iac_decoder_select="imc_decoder"
2393 imc_decoder_select="bswapdsp fft mdct sinewin"
2394 indeo3_decoder_select="hpeldsp"
2395 indeo4_decoder_select="ividsp"
2396 indeo5_decoder_select="ividsp"
2397 interplay_video_decoder_select="hpeldsp"
2398 jpegls_decoder_select="golomb mjpeg_decoder"
2399 jpegls_encoder_select="golomb"
2400 jv_decoder_select="blockdsp"
2401 lagarith_decoder_select="huffyuvdsp"
2402 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2403 loco_decoder_select="golomb"
2404 magicyuv_decoder_select="huffyuvdsp"
2405 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2406 metasound_decoder_select="lsp mdct sinewin"
2407 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2408 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2409 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2410 mjpegb_decoder_select="mjpeg_decoder"
2411 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2412 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2413 mlp_decoder_select="mlp_parser"
2414 motionpixels_decoder_select="bswapdsp"
2415 mp1_decoder_select="mpegaudio"
2416 mp1float_decoder_select="mpegaudio"
2417 mp2_decoder_select="mpegaudio"
2418 mp2float_decoder_select="mpegaudio"
2419 mp3_decoder_select="mpegaudio"
2420 mp3adu_decoder_select="mpegaudio"
2421 mp3adufloat_decoder_select="mpegaudio"
2422 mp3float_decoder_select="mpegaudio"
2423 mp3on4_decoder_select="mpegaudio"
2424 mp3on4float_decoder_select="mpegaudio"
2425 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2426 mpc8_decoder_select="mpegaudiodsp"
2427 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2428 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2429 mpegvideo_decoder_select="mpegvideo"
2430 mpeg1video_decoder_select="mpegvideo"
2431 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2432 mpeg2video_decoder_select="mpegvideo"
2433 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2434 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2435 mpeg4_encoder_select="h263_encoder"
2436 msa1_decoder_select="mss34dsp"
2437 msmpeg4v1_decoder_select="h263_decoder"
2438 msmpeg4v2_decoder_select="h263_decoder"
2439 msmpeg4v2_encoder_select="h263_encoder"
2440 msmpeg4v3_decoder_select="h263_decoder"
2441 msmpeg4v3_encoder_select="h263_encoder"
2442 mss2_decoder_select="vc1_decoder mpegvideo"
2443 mts2_decoder_select="mss34dsp"
2444 mxpeg_decoder_select="mjpeg_decoder"
2445 nellymoser_decoder_select="mdct sinewin"
2446 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2447 nuv_decoder_select="idctdsp lzo"
2448 on2avc_decoder_select="mdct"
2449 opus_decoder_deps="swresample"
2450 opus_decoder_select="imdct15"
2451 png_decoder_select="zlib"
2452 png_encoder_select="huffyuvencdsp zlib"
2453 prores_decoder_select="blockdsp idctdsp"
2454 prores_encoder_select="fdctdsp"
2455 qcelp_decoder_select="lsp"
2456 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2457 ra_144_decoder_select="audiodsp"
2458 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2459 ralf_decoder_select="golomb"
2460 rawvideo_decoder_select="bswapdsp"
2461 rscc_decoder_select="zlib"
2462 rtjpeg_decoder_select="me_cmp"
2463 rv10_decoder_select="h263_decoder"
2464 rv10_encoder_select="h263_encoder"
2465 rv20_decoder_select="h263_decoder"
2466 rv20_encoder_select="h263_encoder"
2467 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2468 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2469 screenpresso_decoder_select="zlib"
2470 shorten_decoder_select="golomb"
2471 sipr_decoder_select="lsp"
2472 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2473 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2474 sonic_decoder_select="golomb rangecoder"
2475 sonic_encoder_select="golomb rangecoder"
2476 sonic_ls_encoder_select="golomb rangecoder"
2477 sp5x_decoder_select="mjpeg_decoder"
2478 svq1_decoder_select="hpeldsp"
2479 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2480 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2481 svq3_decoder_suggest="zlib"
2482 tak_decoder_select="audiodsp"
2483 tdsc_decoder_select="zlib mjpeg_decoder"
2484 theora_decoder_select="vp3_decoder"
2485 thp_decoder_select="mjpeg_decoder"
2486 tiff_decoder_suggest="zlib lzma"
2487 tiff_encoder_suggest="zlib"
2488 truehd_decoder_select="mlp_parser"
2489 truemotion2_decoder_select="bswapdsp"
2490 truespeech_decoder_select="bswapdsp"
2491 tscc_decoder_select="zlib"
2492 twinvq_decoder_select="mdct lsp sinewin"
2493 txd_decoder_select="texturedsp"
2494 utvideo_decoder_select="bswapdsp"
2495 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2496 vble_decoder_select="huffyuvdsp"
2497 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2498 vc1_qsv_decoder_deps="libmfx"
2499 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2500 vc1image_decoder_select="vc1_decoder"
2501 vorbis_decoder_select="mdct"
2502 vorbis_encoder_select="mdct"
2503 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2504 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2505 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2506 vp6a_decoder_select="vp6_decoder"
2507 vp6f_decoder_select="vp6_decoder"
2508 vp7_decoder_select="h264pred videodsp vp8dsp"
2509 vp8_decoder_select="h264pred videodsp vp8dsp"
2510 vp9_decoder_select="videodsp vp9_parser"
2511 webp_decoder_select="vp8_decoder exif"
2512 wmalossless_decoder_select="llauddsp"
2513 wmapro_decoder_select="mdct sinewin wma_freqs"
2514 wmav1_decoder_select="mdct sinewin wma_freqs"
2515 wmav1_encoder_select="mdct sinewin wma_freqs"
2516 wmav2_decoder_select="mdct sinewin wma_freqs"
2517 wmav2_encoder_select="mdct sinewin wma_freqs"
2518 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2519 wmv1_decoder_select="h263_decoder"
2520 wmv1_encoder_select="h263_encoder"
2521 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2522 wmv2_encoder_select="h263_encoder wmv2dsp"
2523 wmv3_decoder_select="vc1_decoder"
2524 wmv3image_decoder_select="wmv3_decoder"
2525 xma1_decoder_select="wmapro_decoder"
2526 xma2_decoder_select="wmapro_decoder"
2527 zerocodec_decoder_select="zlib"
2528 zlib_decoder_select="zlib"
2529 zlib_encoder_select="zlib"
2530 zmbv_decoder_select="zlib"
2531 zmbv_encoder_select="zlib"
2532
2533 # platform codecs
2534 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2535 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2536
2537 # hardware accelerators
2538 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2539 cuvid_deps="cuda"
2540 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2541 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2542 vaapi_deps="va_va_h"
2543 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2544 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2545 vda_deps="vda_framework pthreads"
2546 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2547 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2548 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2549 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2550 xvmc_deps="X11_extensions_XvMClib_h"
2551
2552 h263_cuvid_hwaccel_deps="cuda cuvid"
2553 h263_vaapi_hwaccel_deps="vaapi"
2554 h263_vaapi_hwaccel_select="h263_decoder"
2555 h263_videotoolbox_hwaccel_deps="videotoolbox"
2556 h263_videotoolbox_hwaccel_select="h263_decoder"
2557 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2558 h264_cuvid_hwaccel_deps="cuda cuvid"
2559 h264_d3d11va_hwaccel_deps="d3d11va"
2560 h264_d3d11va_hwaccel_select="h264_decoder"
2561 h264_dxva2_hwaccel_deps="dxva2"
2562 h264_dxva2_hwaccel_select="h264_decoder"
2563 h264_mediacodec_decoder_deps="mediacodec"
2564 h264_mediacodec_hwaccel_deps="mediacodec"
2565 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2566 h264_mmal_decoder_deps="mmal"
2567 h264_mmal_decoder_select="mmal"
2568 h264_mmal_hwaccel_deps="mmal"
2569 h264_omx_encoder_deps="omx"
2570 h264_qsv_hwaccel_deps="libmfx"
2571 h264_vaapi_hwaccel_deps="vaapi"
2572 h264_vaapi_hwaccel_select="h264_decoder"
2573 h264_vda_decoder_deps="vda"
2574 h264_vda_decoder_select="h264_decoder"
2575 h264_vda_hwaccel_deps="vda"
2576 h264_vda_hwaccel_select="h264_decoder"
2577 h264_vda_old_hwaccel_deps="vda"
2578 h264_vda_old_hwaccel_select="h264_decoder"
2579 h264_vdpau_decoder_deps="vdpau"
2580 h264_vdpau_decoder_select="h264_decoder"
2581 h264_vdpau_hwaccel_deps="vdpau"
2582 h264_vdpau_hwaccel_select="h264_decoder"
2583 h264_videotoolbox_hwaccel_deps="videotoolbox"
2584 h264_videotoolbox_hwaccel_select="h264_decoder"
2585 hevc_cuvid_hwaccel_deps="cuda cuvid"
2586 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2587 hevc_d3d11va_hwaccel_select="hevc_decoder"
2588 hevc_mediacodec_decoder_deps="mediacodec"
2589 hevc_mediacodec_hwaccel_deps="mediacodec"
2590 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2591 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2592 hevc_dxva2_hwaccel_select="hevc_decoder"
2593 hevc_qsv_hwaccel_deps="libmfx"
2594 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2595 hevc_vaapi_hwaccel_select="hevc_decoder"
2596 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2597 hevc_vdpau_hwaccel_select="hevc_decoder"
2598 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2599 mpeg_vdpau_decoder_deps="vdpau"
2600 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2601 mpeg_xvmc_hwaccel_deps="xvmc"
2602 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2603 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2604 mpeg1_vdpau_decoder_deps="vdpau"
2605 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2606 mpeg1_vdpau_hwaccel_deps="vdpau"
2607 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2608 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2609 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2610 mpeg1_xvmc_hwaccel_deps="xvmc"
2611 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2612 mpeg2_crystalhd_decoder_select="crystalhd"
2613 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2614 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2615 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2616 mpeg2_dxva2_hwaccel_deps="dxva2"
2617 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2618 mpeg2_mmal_decoder_deps="mmal"
2619 mpeg2_mmal_decoder_select="mmal"
2620 mpeg2_mmal_hwaccel_deps="mmal"
2621 mpeg2_qsv_hwaccel_deps="libmfx"
2622 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2623 mpeg2_vaapi_hwaccel_deps="vaapi"
2624 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2625 mpeg2_vdpau_hwaccel_deps="vdpau"
2626 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2627 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2628 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2629 mpeg2_xvmc_hwaccel_deps="xvmc"
2630 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2631 mpeg4_crystalhd_decoder_select="crystalhd"
2632 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2633 mpeg4_mediacodec_decoder_deps="mediacodec"
2634 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2635 mpeg4_mmal_decoder_deps="mmal"
2636 mpeg4_mmal_decoder_select="mmal"
2637 mpeg4_mmal_hwaccel_deps="mmal"
2638 mpeg4_omx_encoder_deps="omx"
2639 mpeg4_vaapi_hwaccel_deps="vaapi"
2640 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2641 mpeg4_vdpau_decoder_deps="vdpau"
2642 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2643 mpeg4_vdpau_hwaccel_deps="vdpau"
2644 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2645 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2646 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2647 msmpeg4_crystalhd_decoder_select="crystalhd"
2648 vc1_crystalhd_decoder_select="crystalhd"
2649 vc1_cuvid_hwaccel_deps="cuda cuvid"
2650 vc1_d3d11va_hwaccel_deps="d3d11va"
2651 vc1_d3d11va_hwaccel_select="vc1_decoder"
2652 vc1_dxva2_hwaccel_deps="dxva2"
2653 vc1_dxva2_hwaccel_select="vc1_decoder"
2654 vc1_mmal_decoder_deps="mmal"
2655 vc1_mmal_decoder_select="mmal"
2656 vc1_mmal_hwaccel_deps="mmal"
2657 vc1_qsv_hwaccel_deps="libmfx"
2658 vc1_qsv_hwaccel_select="qsvdec_vc1"
2659 vc1_vaapi_hwaccel_deps="vaapi"
2660 vc1_vaapi_hwaccel_select="vc1_decoder"
2661 vc1_vdpau_decoder_deps="vdpau"
2662 vc1_vdpau_decoder_select="vc1_decoder"
2663 vc1_vdpau_hwaccel_deps="vdpau"
2664 vc1_vdpau_hwaccel_select="vc1_decoder"
2665 vp8_cuvid_hwaccel_deps="cuda cuvid"
2666 vp9_cuvid_hwaccel_deps="cuda cuvid"
2667 vp8_mediacodec_decoder_deps="mediacodec"
2668 vp8_mediacodec_hwaccel_deps="mediacodec"
2669 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2670 vp9_d3d11va_hwaccel_select="vp9_decoder"
2671 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2672 vp9_dxva2_hwaccel_select="vp9_decoder"
2673 vp9_mediacodec_decoder_deps="mediacodec"
2674 vp9_mediacodec_hwaccel_deps="mediacodec"
2675 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2676 vp9_vaapi_hwaccel_select="vp9_decoder"
2677 wmv3_crystalhd_decoder_select="crystalhd"
2678 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2679 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2680 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2681 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2682 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2683
2684 # hardware-accelerated codecs
2685 omx_deps="dlopen pthreads"
2686 omx_extralibs='$ldl'
2687 qsvdec_select="qsv"
2688 qsvenc_select="qsv"
2689 vaapi_encode_deps="vaapi"
2690
2691 hwupload_cuda_filter_deps="cuda"
2692 scale_npp_filter_deps="cuda libnpp"
2693
2694 nvenc_deps_any="dlopen LoadLibrary"
2695 nvenc_encoder_deps="nvenc"
2696 h263_cuvid_decoder_deps="cuda cuvid"
2697 h263_cuvid_decoder_select="h263_cuvid_hwaccel"
2698 h264_cuvid_decoder_deps="cuda cuvid"
2699 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2700 h264_nvenc_encoder_deps="nvenc"
2701 h264_qsv_decoder_deps="libmfx"
2702 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2703 h264_qsv_encoder_deps="libmfx"
2704 h264_qsv_encoder_select="qsvenc"
2705 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2706 h264_vaapi_encoder_select="vaapi_encode golomb"
2707
2708 hevc_cuvid_decoder_deps="cuda cuvid"
2709 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2710 hevc_nvenc_encoder_deps="nvenc"
2711 hevc_qsv_decoder_deps="libmfx"
2712 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2713 hevc_qsv_encoder_deps="libmfx"
2714 hevc_qsv_encoder_select="qsvenc"
2715 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2716 hevc_vaapi_encoder_select="vaapi_encode golomb"
2717 mjpeg_cuvid_decoder_deps="cuda cuvid"
2718 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2719 mpeg1_cuvid_decoder_deps="cuda cuvid"
2720 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2721 mpeg2_cuvid_decoder_deps="cuda cuvid"
2722 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2723 mpeg2_qsv_decoder_deps="libmfx"
2724 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2725 mpeg2_qsv_encoder_deps="libmfx"
2726 mpeg2_qsv_encoder_select="qsvenc"
2727 mpeg4_cuvid_decoder_deps="cuda cuvid"
2728 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2729 nvenc_h264_encoder_deps="nvenc"
2730 nvenc_hevc_encoder_deps="nvenc"
2731
2732 vc1_cuvid_decoder_deps="cuda cuvid"
2733 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2734 vp8_cuvid_decoder_deps="cuda cuvid"
2735 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2736 vp9_cuvid_decoder_deps="cuda cuvid"
2737 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2738
2739 # parsers
2740 h264_parser_select="golomb h264dsp"
2741 hevc_parser_select="golomb"
2742 mpegvideo_parser_select="mpegvideo"
2743 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2744 vc1_parser_select="vc1dsp"
2745
2746 # bitstream_filters
2747 mjpeg2jpeg_bsf_select="jpegtables"
2748
2749 # external libraries
2750 aac_at_decoder_deps="audiotoolbox"
2751 ac3_at_decoder_deps="audiotoolbox"
2752 ac3_at_decoder_select="ac3_parser"
2753 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2754 alac_at_decoder_deps="audiotoolbox"
2755 amr_nb_at_decoder_deps="audiotoolbox"
2756 eac3_at_decoder_deps="audiotoolbox"
2757 eac3_at_decoder_select="ac3_parser"
2758 gsm_ms_at_decoder_deps="audiotoolbox"
2759 ilbc_at_decoder_deps="audiotoolbox"
2760 mp1_at_decoder_deps="audiotoolbox"
2761 mp2_at_decoder_deps="audiotoolbox"
2762 mp3_at_decoder_deps="audiotoolbox"
2763 pcm_alaw_at_decoder_deps="audiotoolbox"
2764 pcm_mulaw_at_decoder_deps="audiotoolbox"
2765 qdmc_at_decoder_deps="audiotoolbox"
2766 qdm2_at_decoder_deps="audiotoolbox"
2767 aac_at_encoder_deps="audiotoolbox"
2768 aac_at_encoder_select="audio_frame_queue"
2769 alac_at_encoder_deps="audiotoolbox"
2770 alac_at_encoder_select="audio_frame_queue"
2771 ilbc_at_encoder_deps="audiotoolbox"
2772 ilbc_at_encoder_select="audio_frame_queue"
2773 pcm_alaw_at_encoder_deps="audiotoolbox"
2774 pcm_alaw_at_encoder_select="audio_frame_queue"
2775 pcm_mulaw_at_encoder_deps="audiotoolbox"
2776 pcm_mulaw_at_encoder_select="audio_frame_queue"
2777 chromaprint_muxer_deps="chromaprint"
2778 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2779 libcelt_decoder_deps="libcelt"
2780 libfdk_aac_decoder_deps="libfdk_aac"
2781 libfdk_aac_encoder_deps="libfdk_aac"
2782 libfdk_aac_encoder_select="audio_frame_queue"
2783 libgme_demuxer_deps="libgme"
2784 libgsm_decoder_deps="libgsm"
2785 libgsm_encoder_deps="libgsm"
2786 libgsm_ms_decoder_deps="libgsm"
2787 libgsm_ms_encoder_deps="libgsm"
2788 libilbc_decoder_deps="libilbc"
2789 libilbc_encoder_deps="libilbc"
2790 libkvazaar_encoder_deps="libkvazaar"
2791 libmodplug_demuxer_deps="libmodplug"
2792 libmp3lame_encoder_deps="libmp3lame"
2793 libmp3lame_encoder_select="audio_frame_queue"
2794 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2795 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2796 libopencore_amrnb_encoder_select="audio_frame_queue"
2797 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2798 libopenh264_decoder_deps="libopenh264"
2799 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2800 libopenh264_encoder_deps="libopenh264"
2801 libopenjpeg_decoder_deps="libopenjpeg"
2802 libopenjpeg_encoder_deps="libopenjpeg"
2803 libopenmpt_demuxer_deps="libopenmpt"
2804 libopus_decoder_deps="libopus"
2805 libopus_encoder_deps="libopus"
2806 libopus_encoder_select="audio_frame_queue"
2807 libschroedinger_decoder_deps="libschroedinger"
2808 libschroedinger_encoder_deps="libschroedinger"
2809 libshine_encoder_deps="libshine"
2810 libshine_encoder_select="audio_frame_queue"
2811 libspeex_decoder_deps="libspeex"
2812 libspeex_encoder_deps="libspeex"
2813 libspeex_encoder_select="audio_frame_queue"
2814 libtheora_encoder_deps="libtheora"
2815 libtwolame_encoder_deps="libtwolame"
2816 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2817 libvorbis_decoder_deps="libvorbis"
2818 libvorbis_encoder_deps="libvorbis"
2819 libvorbis_encoder_select="audio_frame_queue"
2820 libvpx_vp8_decoder_deps="libvpx"
2821 libvpx_vp8_encoder_deps="libvpx"
2822 libvpx_vp9_decoder_deps="libvpx"
2823 libvpx_vp9_encoder_deps="libvpx"
2824 libwavpack_encoder_deps="libwavpack"
2825 libwebp_encoder_deps="libwebp"
2826 libwebp_anim_encoder_deps="libwebp"
2827 libx262_encoder_deps="libx262"
2828 libx264_encoder_deps="libx264"
2829 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2830 libx264rgb_encoder_select="libx264_encoder"
2831 libx265_encoder_deps="libx265"
2832 libxavs_encoder_deps="libxavs"
2833 libxvid_encoder_deps="libxvid"
2834 libzvbi_teletext_decoder_deps="libzvbi"
2835 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2836 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2837 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2838 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2839 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2840
2841 # demuxers / muxers
2842 ac3_demuxer_select="ac3_parser"
2843 asf_demuxer_select="riffdec"
2844 asf_o_demuxer_select="riffdec"
2845 asf_muxer_select="riffenc"
2846 asf_stream_muxer_select="asf_muxer"
2847 avi_demuxer_select="iso_media riffdec exif"
2848 avi_muxer_select="riffenc"
2849 avisynth_demuxer_deps="avisynth"
2850 avisynth_demuxer_select="riffdec"
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 loudnorm_filter_deps="libebur128"
3055 mcdeint_filter_deps="avcodec gpl"
3056 movie_filter_deps="avcodec avformat"
3057 mpdecimate_filter_deps="gpl"
3058 mpdecimate_filter_select="pixelutils"
3059 mptestsrc_filter_deps="gpl"
3060 negate_filter_deps="lut_filter"
3061 nnedi_filter_deps="gpl"
3062 ocr_filter_deps="libtesseract"
3063 ocv_filter_deps="libopencv"
3064 owdenoise_filter_deps="gpl"
3065 pan_filter_deps="swresample"
3066 perspective_filter_deps="gpl"
3067 phase_filter_deps="gpl"
3068 pp7_filter_deps="gpl"
3069 pp_filter_deps="gpl postproc"
3070 pullup_filter_deps="gpl"
3071 removelogo_filter_deps="avcodec avformat swscale"
3072 repeatfields_filter_deps="gpl"
3073 resample_filter_deps="avresample"
3074 rubberband_filter_deps="librubberband"
3075 sab_filter_deps="gpl swscale"
3076 scale2ref_filter_deps="swscale"
3077 scale_filter_deps="swscale"
3078 select_filter_select="pixelutils"
3079 showcqt_filter_deps="avcodec avformat swscale"
3080 showcqt_filter_select="fft"
3081 showfreqs_filter_deps="avcodec"
3082 showfreqs_filter_select="fft"
3083 showspectrum_filter_deps="avcodec"
3084 showspectrum_filter_select="fft"
3085 showspectrumpic_filter_deps="avcodec"
3086 showspectrumpic_filter_select="fft"
3087 smartblur_filter_deps="gpl swscale"
3088 sofalizer_filter_deps="netcdf avcodec"
3089 sofalizer_filter_select="fft"
3090 spectrumsynth_filter_deps="avcodec"
3091 spectrumsynth_filter_select="fft"
3092 spp_filter_deps="gpl avcodec"
3093 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3094 stereo3d_filter_deps="gpl"
3095 subtitles_filter_deps="avformat avcodec libass"
3096 super2xsai_filter_deps="gpl"
3097 pixfmts_super2xsai_test_deps="super2xsai_filter"
3098 tinterlace_filter_deps="gpl"
3099 tinterlace_merge_test_deps="tinterlace_filter"
3100 tinterlace_pad_test_deps="tinterlace_filter"
3101 uspp_filter_deps="gpl avcodec"
3102 vaguedenoiser_filter_deps="gpl"
3103 vidstabdetect_filter_deps="libvidstab"
3104 vidstabtransform_filter_deps="libvidstab"
3105 zmq_filter_deps="libzmq"
3106 zoompan_filter_deps="swscale"
3107 zscale_filter_deps="libzimg"
3108 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3109
3110 # examples
3111 avio_dir_cmd_deps="avformat avutil"
3112 avio_reading_deps="avformat avcodec avutil"
3113 decoding_encoding_example_deps="avcodec avformat avutil"
3114 demuxing_decoding_example_deps="avcodec avformat avutil"
3115 extract_mvs_example_deps="avcodec avformat avutil"
3116 filter_audio_example_deps="avfilter avutil"
3117 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3118 filtering_video_example_deps="avfilter avcodec avformat avutil"
3119 http_multiclient_example_deps="avformat avutil"
3120 metadata_example_deps="avformat avutil"
3121 muxing_example_deps="avcodec avformat avutil swscale"
3122 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3123 remuxing_example_deps="avcodec avformat avutil"
3124 resampling_audio_example_deps="avutil swresample"
3125 scaling_video_example_deps="avutil swscale"
3126 transcode_aac_example_deps="avcodec avformat swresample"
3127 transcoding_example_deps="avfilter avcodec avformat avutil"
3128
3129 # libraries, in linking order
3130 avcodec_deps="avutil"
3131 avdevice_deps="avformat avcodec avutil"
3132 avfilter_deps="avutil"
3133 avformat_deps="avcodec avutil"
3134 avresample_deps="avutil"
3135 postproc_deps="avutil gpl"
3136 swresample_deps="avutil"
3137 swscale_deps="avutil"
3138
3139 # programs
3140 ffmpeg_deps="avcodec avfilter avformat swresample"
3141 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3142                null_filter
3143                setpts_filter trim_filter"
3144 ffplay_deps="avcodec avformat swscale swresample sdl2"
3145 ffplay_libs='$sdl2_libs'
3146 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3147 ffprobe_deps="avcodec avformat"
3148 ffserver_deps="avformat fork sarestart"
3149 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3150
3151 # documentation
3152 podpages_deps="perl"
3153 manpages_deps="perl pod2man"
3154 htmlpages_deps="perl"
3155 htmlpages_deps_any="makeinfo_html texi2html"
3156 txtpages_deps="perl makeinfo"
3157 doc_deps_any="manpages htmlpages podpages txtpages"
3158
3159 # default parameters
3160
3161 logfile="config.log"
3162
3163 # installation paths
3164 prefix_default="/usr/local"
3165 bindir_default='${prefix}/bin'
3166 datadir_default='${prefix}/share/ffmpeg'
3167 docdir_default='${prefix}/share/doc/ffmpeg'
3168 incdir_default='${prefix}/include'
3169 libdir_default='${prefix}/lib'
3170 mandir_default='${prefix}/share/man'
3171
3172 # toolchain
3173 ar_default="ar"
3174 cc_default="gcc"
3175 cxx_default="g++"
3176 host_cc_default="gcc"
3177 cp_f="cp -f"
3178 doxygen_default="doxygen"
3179 install="install"
3180 ln_s_default="ln -s -f"
3181 nm_default="nm -g"
3182 objformat="elf"
3183 pkg_config_default=pkg-config
3184 ranlib_default="ranlib"
3185 strip_default="strip"
3186 version_script='--version-script'
3187 yasmexe_default="yasm"
3188 windres_default="windres"
3189
3190 # OS
3191 target_os_default=$(tolower $(uname -s))
3192 host_os=$target_os_default
3193
3194 # machine
3195 if test "$target_os_default" = aix; then
3196     arch_default=$(uname -p)
3197     strip_default="strip -X32_64"
3198 else
3199     arch_default=$(uname -m)
3200 fi
3201 cpu="generic"
3202 intrinsics="none"
3203
3204 # configurable options
3205 enable $PROGRAM_LIST
3206 enable $DOCUMENT_LIST
3207 enable $EXAMPLE_LIST
3208 enable $(filter_out avresample $LIBRARY_LIST)
3209 enable stripping
3210
3211 enable asm
3212 enable debug
3213 enable doc
3214 enable faan faandct faanidct
3215 enable optimizations
3216 enable runtime_cpudetect
3217 enable safe_bitstream_reader
3218 enable static
3219 enable swscale_alpha
3220 enable valgrind_backtrace
3221
3222 sws_max_filter_size_default=256
3223 set_default sws_max_filter_size
3224
3225 # Enable platform codecs by default.
3226 enable audiotoolbox
3227
3228 # Enable hwaccels by default.
3229 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3230 enable xlib
3231
3232 enable nvenc vda_framework videotoolbox videotoolbox_encoder
3233
3234 # build settings
3235 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3236 LIBPREF="lib"
3237 LIBSUF=".a"
3238 FULLNAME='$(NAME)$(BUILDSUF)'
3239 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3240 SLIBPREF="lib"
3241 SLIBSUF=".so"
3242 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3243 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3244 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3245 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3246 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3247 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3248 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3249
3250 asflags_filter=echo
3251 cflags_filter=echo
3252 ldflags_filter=echo
3253
3254 AS_C='-c'
3255 AS_O='-o $@'
3256 CC_C='-c'
3257 CC_E='-E -o $@'
3258 CC_O='-o $@'
3259 CXX_C='-c'
3260 CXX_O='-o $@'
3261 OBJCC_C='-c'
3262 OBJCC_E='-E -o $@'
3263 OBJCC_O='-o $@'
3264 LD_O='-o $@'
3265 LD_LIB='-l%'
3266 LD_PATH='-L'
3267 HOSTCC_C='-c'
3268 HOSTCC_E='-E -o $@'
3269 HOSTCC_O='-o $@'
3270 HOSTLD_O='-o $@'
3271
3272 host_libs='-lm'
3273 host_cflags_filter=echo
3274 host_ldflags_filter=echo
3275
3276 target_path='$(CURDIR)'
3277
3278 # since the object filename is not given with the -MM flag, the compiler
3279 # is only able to print the basename, and we must add the path ourselves
3280 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3281 DEPFLAGS='-MM'
3282
3283 # find source path
3284 if test -f configure; then
3285     source_path=.
3286 else
3287     source_path=$(cd $(dirname "$0"); pwd)
3288     case "$source_path" in
3289         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3290     esac
3291     test -e "$source_path/config.h" &&
3292         die "Out of tree builds are impossible with config.h in source dir."
3293 fi
3294
3295 for v in "$@"; do
3296     r=${v#*=}
3297     l=${v%"$r"}
3298     r=$(sh_quote "$r")
3299     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3300 done
3301
3302 find_things(){
3303     thing=$1
3304     pattern=$2
3305     file=$source_path/$3
3306     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3307 }
3308
3309 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3310 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3311 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3312 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3313 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3314 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3315 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3316 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3317 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3318
3319 find_things_extern(){
3320     thing=$1
3321     pattern=$2
3322     file=$source_path/$3
3323     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3324 }
3325
3326 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3327 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3328
3329 ALL_COMPONENTS="
3330     $BSF_LIST
3331     $DECODER_LIST
3332     $DEMUXER_LIST
3333     $ENCODER_LIST
3334     $FILTER_LIST
3335     $HWACCEL_LIST
3336     $INDEV_LIST
3337     $MUXER_LIST
3338     $OUTDEV_LIST
3339     $PARSER_LIST
3340     $PROTOCOL_LIST
3341 "
3342
3343 for n in $COMPONENT_LIST; do
3344     v=$(toupper ${n%s})_LIST
3345     eval enable \$$v
3346     eval ${n}_if_any="\$$v"
3347 done
3348
3349 enable $ARCH_EXT_LIST
3350
3351 die_unknown(){
3352     echo "Unknown option \"$1\"."
3353     echo "See $0 --help for available options."
3354     exit 1
3355 }
3356
3357 print_in_columns() {
3358     cols=$(expr $ncols / 24)
3359     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3360 }
3361
3362 show_list() {
3363     suffix=_$1
3364     shift
3365     echo $* | sed s/$suffix//g | print_in_columns
3366     exit 0
3367 }
3368
3369 rand_list(){
3370     IFS=', '
3371     set -- $*
3372     unset IFS
3373     for thing; do
3374         comp=${thing%:*}
3375         prob=${thing#$comp}
3376         prob=${prob#:}
3377         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3378         echo "prob ${prob:-0.5}"
3379         printf '%s\n' $comp
3380     done
3381 }
3382
3383 do_random(){
3384     action=$1
3385     shift
3386     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3387     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3388 }
3389
3390 for opt do
3391     optval="${opt#*=}"
3392     case "$opt" in
3393         --extra-ldflags=*)
3394             add_ldflags $optval
3395         ;;
3396         --extra-ldexeflags=*)
3397             add_ldexeflags $optval
3398         ;;
3399         --extra-ldlibflags=*)
3400             add_ldlibflags $optval
3401         ;;
3402         --extra-libs=*)
3403             add_extralibs $optval
3404         ;;
3405         --disable-devices)
3406             disable $INDEV_LIST $OUTDEV_LIST
3407         ;;
3408         --enable-debug=*)
3409             debuglevel="$optval"
3410         ;;
3411         --disable-programs)
3412             disable $PROGRAM_LIST
3413         ;;
3414         --disable-everything)
3415             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3416         ;;
3417         --disable-all)
3418             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3419             disable $LIBRARY_LIST $PROGRAM_LIST doc
3420             enable avutil
3421         ;;
3422         --enable-random|--disable-random)
3423             action=${opt%%-random}
3424             do_random ${action#--} $COMPONENT_LIST
3425         ;;
3426         --enable-random=*|--disable-random=*)
3427             action=${opt%%-random=*}
3428             do_random ${action#--} $optval
3429         ;;
3430         --enable-*=*|--disable-*=*)
3431             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3432             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3433             eval list=\$$(toupper $thing)_LIST
3434             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3435             list=$(filter "$name" $list)
3436             [ "$list" = "" ] && warn "Option $opt did not match anything"
3437             $action $list
3438         ;;
3439         --enable-?*|--disable-?*)
3440             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3441             if is_in $option $COMPONENT_LIST; then
3442                 test $action = disable && action=unset
3443                 eval $action \$$(toupper ${option%s})_LIST
3444             elif is_in $option $CMDLINE_SELECT; then
3445                 $action $option
3446             else
3447                 die_unknown $opt
3448             fi
3449         ;;
3450         --list-*)
3451             NAME="${opt#--list-}"
3452             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3453             NAME=${NAME%s}
3454             eval show_list $NAME \$$(toupper $NAME)_LIST
3455         ;;
3456         --help|-h) show_help
3457         ;;
3458         --fatal-warnings) enable fatal_warnings
3459         ;;
3460         *)
3461             optname="${opt%%=*}"
3462             optname="${optname#--}"
3463             optname=$(echo "$optname" | sed 's/-/_/g')
3464             if is_in $optname $CMDLINE_SET; then
3465                 eval $optname='$optval'
3466             elif is_in $optname $CMDLINE_APPEND; then
3467                 append $optname "$optval"
3468             else
3469                 die_unknown $opt
3470             fi
3471         ;;
3472     esac
3473 done
3474
3475 for e in $env; do
3476     eval "export $e"
3477 done
3478
3479 disabled logging && logfile=/dev/null
3480
3481 # Disable all the library-specific components if the library itself
3482 # is disabled, see AVCODEC_LIST and following _LIST variables.
3483
3484 disable_components(){
3485     disabled ${1} && disable $(
3486         eval components="\$$(toupper ${1})_COMPONENTS"
3487         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3488     )
3489 }
3490
3491 map 'disable_components $v' $LIBRARY_LIST
3492
3493 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3494 set >> $logfile
3495
3496 test -n "$valgrind" && toolchain="valgrind-memcheck"
3497
3498 case "$toolchain" in
3499     *-asan)
3500         cc_default="${toolchain%-asan}"
3501         add_cflags  -fsanitize=address
3502         add_ldflags -fsanitize=address
3503     ;;
3504     *-msan)
3505         cc_default="${toolchain%-msan}"
3506         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3507         add_ldflags -fsanitize=memory
3508     ;;
3509     *-tsan)
3510         cc_default="${toolchain%-tsan}"
3511         add_cflags  -fsanitize=thread -pie
3512         add_ldflags -fsanitize=thread -pie
3513         case "$toolchain" in
3514             gcc-tsan)
3515                 add_cflags  -fPIC
3516                 add_ldflags -fPIC
3517                 ;;
3518         esac
3519     ;;
3520     *-usan)
3521         cc_default="${toolchain%-usan}"
3522         add_cflags  -fsanitize=undefined
3523         add_ldflags -fsanitize=undefined
3524     ;;
3525     valgrind-*)
3526         target_exec_default="valgrind"
3527         case "$toolchain" in
3528             valgrind-massif)
3529                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3530                 ;;
3531             valgrind-memcheck)
3532                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3533                 ;;
3534         esac
3535     ;;
3536     msvc)
3537         # Check whether the current MSVC version needs the C99 converter.
3538         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3539         # support enough of C99 to build ffmpeg. Default to the new
3540         # behaviour if the regexp was unable to match anything, since this
3541         # successfully parses the version number of existing supported
3542         # versions that require the converter (MSVC 2010 and 2012).
3543         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3544         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3545             cc_default="cl"
3546         else
3547             cc_default="c99wrap cl"
3548         fi
3549         ld_default="$source_path/compat/windows/mslink"
3550         nm_default="dumpbin -symbols"
3551         ar_default="lib"
3552         case "$arch" in
3553         arm*)
3554             as_default="armasm"
3555             ;;
3556         esac
3557         target_os_default="win32"
3558         # Use a relative path for TMPDIR. This makes sure all the
3559         # ffconf temp files are written with a relative path, avoiding
3560         # issues with msys/win32 path conversion for MSVC parameters
3561         # such as -Fo<file> or -out:<file>.
3562         TMPDIR=.
3563     ;;
3564     icl)
3565         cc_default="icl"
3566         ld_default="xilink"
3567         nm_default="dumpbin -symbols"
3568         ar_default="xilib"
3569         target_os_default="win32"
3570         TMPDIR=.
3571     ;;
3572     gcov)
3573         add_cflags  -fprofile-arcs -ftest-coverage
3574         add_ldflags -fprofile-arcs -ftest-coverage
3575     ;;
3576     llvm-cov)
3577         add_cflags -fprofile-arcs -ftest-coverage
3578         add_ldflags --coverage
3579     ;;
3580     hardened)
3581         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3582         add_cflags   -fno-strict-overflow -fstack-protector-all
3583         add_ldflags  -Wl,-z,relro -Wl,-z,now
3584         add_cflags   -fPIE
3585         add_ldexeflags -fPIE -pie
3586     ;;
3587     ?*)
3588         die "Unknown toolchain $toolchain"
3589     ;;
3590 esac
3591
3592 test -n "$cross_prefix" && enable cross_compile
3593
3594 if enabled cross_compile; then
3595     test -n "$arch" && test -n "$target_os" ||
3596         die "Must specify target arch and OS when cross-compiling"
3597 fi
3598
3599 ar_default="${cross_prefix}${ar_default}"
3600 cc_default="${cross_prefix}${cc_default}"
3601 cxx_default="${cross_prefix}${cxx_default}"
3602 nm_default="${cross_prefix}${nm_default}"
3603 pkg_config_default="${cross_prefix}${pkg_config_default}"
3604 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3605     ranlib_default="${cross_prefix}${ranlib_default} -D"
3606 else
3607     ranlib_default="${cross_prefix}${ranlib_default}"
3608 fi
3609 strip_default="${cross_prefix}${strip_default}"
3610 windres_default="${cross_prefix}${windres_default}"
3611
3612 sysinclude_default="${sysroot}/usr/include"
3613
3614 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3615     target_exec target_os yasmexe
3616 enabled cross_compile || host_cc_default=$cc
3617 set_default host_cc
3618
3619 pkg_config_fail_message=""
3620 if ! $pkg_config --version >/dev/null 2>&1; then
3621     warn "$pkg_config not found, library detection may fail."
3622     pkg_config=false
3623 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3624     pkg_config_fail_message="
3625 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3626 fi
3627
3628 if test $doxygen != $doxygen_default && \
3629   ! $doxygen --version >/dev/null 2>&1; then
3630     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3631 fi
3632
3633 exesuf() {
3634     case $1 in
3635         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3636     esac
3637 }
3638
3639 EXESUF=$(exesuf $target_os)
3640 HOSTEXESUF=$(exesuf $host_os)
3641
3642 # set temporary file name
3643 : ${TMPDIR:=$TEMPDIR}
3644 : ${TMPDIR:=$TMP}
3645 : ${TMPDIR:=/tmp}
3646
3647 if [ -n "$tempprefix" ] ; then
3648     mktemp(){
3649         echo $tempprefix.${HOSTNAME}.${UID}
3650     }
3651 elif ! check_cmd mktemp -u XXXXXX; then
3652     # simple replacement for missing mktemp
3653     # NOT SAFE FOR GENERAL USE
3654     mktemp(){
3655         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3656     }
3657 fi
3658
3659 tmpfile(){
3660     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3661         (set -C; exec > $tmp) 2>/dev/null ||
3662         die "Unable to create temporary file in $TMPDIR."
3663     append TMPFILES $tmp
3664     eval $1=$tmp
3665 }
3666
3667 trap 'rm -f -- $TMPFILES' EXIT
3668
3669 tmpfile TMPASM .asm
3670 tmpfile TMPC   .c
3671 tmpfile TMPCPP .cpp
3672 tmpfile TMPE   $EXESUF
3673 tmpfile TMPH   .h
3674 tmpfile TMPM   .m
3675 tmpfile TMPO   .o
3676 tmpfile TMPS   .S
3677 tmpfile TMPSH  .sh
3678 tmpfile TMPV   .ver
3679
3680 unset -f mktemp
3681
3682 chmod +x $TMPE
3683
3684 # make sure we can execute files in $TMPDIR
3685 cat > $TMPSH 2>> $logfile <<EOF
3686 #! /bin/sh
3687 EOF
3688 chmod +x $TMPSH >> $logfile 2>&1
3689 if ! $TMPSH >> $logfile 2>&1; then
3690     cat <<EOF
3691 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3692 variable to another directory and make sure that it is not mounted noexec.
3693 EOF
3694     die "Sanity test failed."
3695 fi
3696
3697 armasm_flags(){
3698     for flag; do
3699         case $flag in
3700             # Filter out MSVC cl.exe options from cflags that shouldn't
3701             # be passed to gas-preprocessor
3702             -M[TD]*)                                            ;;
3703             *)                  echo $flag                      ;;
3704         esac
3705    done
3706 }
3707
3708 ccc_flags(){
3709     for flag; do
3710         case $flag in
3711             -std=c99)           echo -c99                       ;;
3712             -mcpu=*)            echo -arch ${flag#*=}           ;;
3713             -mieee)             echo -ieee                      ;;
3714             -O*|-fast)          echo $flag                      ;;
3715             -fno-math-errno)    echo -assume nomath_errno       ;;
3716             -g)                 echo -g3                        ;;
3717             -Wall)              echo -msg_enable level2         ;;
3718             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3719             -Wl,*)              echo $flag                      ;;
3720             -f*|-W*)                                            ;;
3721             *)                  echo $flag                      ;;
3722         esac
3723    done
3724 }
3725
3726 cparser_flags(){
3727     for flag; do
3728         case $flag in
3729             -Wno-switch)             echo -Wno-switch-enum ;;
3730             -Wno-format-zero-length) ;;
3731             -Wdisabled-optimization) ;;
3732             -Wno-pointer-sign)       echo -Wno-other ;;
3733             *)                       echo $flag ;;
3734         esac
3735     done
3736 }
3737
3738 msvc_common_flags(){
3739     for flag; do
3740         case $flag in
3741             # In addition to specifying certain flags under the compiler
3742             # specific filters, they must be specified here as well or else the
3743             # generic catch all at the bottom will print the original flag.
3744             -Wall)                ;;
3745             -std=c99)             ;;
3746             # Common flags
3747             -fomit-frame-pointer) ;;
3748             -g)                   echo -Z7 ;;
3749             -fno-math-errno)      ;;
3750             -fno-common)          ;;
3751             -fno-signed-zeros)    ;;
3752             -fPIC)                ;;
3753             -mthumb)              ;;
3754             -march=*)             ;;
3755             -lz)                  echo zlib.lib ;;
3756             -lavifil32)           echo vfw32.lib ;;
3757             -lavicap32)           echo vfw32.lib user32.lib ;;
3758             -lx264)               echo libx264.lib ;;
3759             -l*)                  echo ${flag#-l}.lib ;;
3760             -LARGEADDRESSAWARE)   echo $flag ;;
3761             -L*)                  echo -libpath:${flag#-L} ;;
3762             *)                    echo $flag ;;
3763         esac
3764     done
3765 }
3766
3767 msvc_flags(){
3768     msvc_common_flags "$@"
3769     for flag; do
3770         case $flag in
3771             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3772                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3773                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3774                                        -wd4307 \
3775                                        -wd4273 -wd4554 -wd4701 ;;
3776         esac
3777     done
3778 }
3779
3780 icl_flags(){
3781     msvc_common_flags "$@"
3782     for flag; do
3783         case $flag in
3784             # Despite what Intel's documentation says -Wall, which is supported
3785             # on Windows, does enable remarks so disable them here.
3786             -Wall)                echo $flag -Qdiag-disable:remark ;;
3787             -std=c99)             echo -Qstd=c99 ;;
3788             -flto)                echo -ipo ;;
3789         esac
3790     done
3791 }
3792
3793 icc_flags(){
3794     for flag; do
3795         case $flag in
3796             -flto)                echo -ipo ;;
3797             *)                    echo $flag ;;
3798         esac
3799     done
3800 }
3801
3802 pgi_flags(){
3803     for flag; do
3804         case $flag in
3805             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3806             -fomit-frame-pointer) echo -Mnoframe ;;
3807             -g)                   echo -gopt ;;
3808             *)                    echo $flag ;;
3809         esac
3810     done
3811 }
3812
3813 suncc_flags(){
3814     for flag; do
3815         case $flag in
3816             -march=*|-mcpu=*)
3817                 case "${flag#*=}" in
3818                     native)                   echo -xtarget=native       ;;
3819                     v9|niagara)               echo -xarch=sparc          ;;
3820                     ultrasparc)               echo -xarch=sparcvis       ;;
3821                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3822                     i586|pentium)             echo -xchip=pentium        ;;
3823                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3824                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3825                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3826                     pentium4*)          echo -xtarget=pentium4           ;;
3827                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3828                     *-sse3)             echo -xarch=sse3                 ;;
3829                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3830                     bonnell)                   echo -xarch=ssse3         ;;
3831                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3832                     westmere)                  echo -xtarget=westmere    ;;
3833                     silvermont)                echo -xarch=sse4_2        ;;
3834                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3835                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3836                                                echo -xarch=avx           ;;
3837                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3838                     btver1)                    echo -xarch=amdsse4a      ;;
3839                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3840                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3841                     k8|opteron|athlon64|athlon-fx)
3842                                                echo -xarch=sse2a         ;;
3843                     athlon*)                   echo -xarch=pentium_proa  ;;
3844                 esac
3845                 ;;
3846             -std=c99)             echo -xc99              ;;
3847             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3848             -fPIC)                echo -KPIC -xcode=pic32 ;;
3849             -W*,*)                echo $flag              ;;
3850             -f*-*|-W*|-mimpure-text)                      ;;
3851             -shared)              echo -G                 ;;
3852             *)                    echo $flag              ;;
3853         esac
3854     done
3855 }
3856
3857 tms470_flags(){
3858     for flag; do
3859         case $flag in
3860             -march=*|-mcpu=*)
3861                 case "${flag#*=}" in
3862                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3863                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3864                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3865                     armv6*|arm11*)          echo -mv=6   ;;
3866                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3867                                             echo -mv=5e  ;;
3868                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3869                 esac
3870                 ;;
3871             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3872             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3873             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3874             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3875             -msoft-float)   echo --float_support=vfplib       ;;
3876             -O[0-3]|-mf=*)  echo $flag                        ;;
3877             -g)             echo -g -mn                       ;;
3878             -pds=*)         echo $flag                        ;;
3879             -D*|-I*)        echo $flag                        ;;
3880             --gcc|--abi=*)  echo $flag                        ;;
3881             -me)            echo $flag                        ;;
3882         esac
3883     done
3884 }
3885
3886 probe_cc(){
3887     pfx=$1
3888     _cc=$2
3889     first=$3
3890
3891     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3892     unset _ld_o _ldflags _ld_lib _ld_path
3893     unset _depflags _DEPCMD _DEPFLAGS
3894     _flags_filter=echo
3895
3896     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3897         true # no-op to avoid reading stdin in following checks
3898     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3899         _type=llvm_gcc
3900         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3901         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3902         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3903         _cflags_speed='-O3'
3904         _cflags_size='-Os'
3905     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3906         _type=gcc
3907         gcc_version=$($_cc --version | head -n1)
3908         gcc_basever=$($_cc -dumpversion)
3909         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3910         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3911         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3912         case $gcc_basever in
3913             2) ;;
3914             2.*) ;;
3915             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3916         esac
3917         if [ "$first" = true ]; then
3918             case $gcc_basever in
3919                 4.2*)
3920                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3921             esac
3922         fi
3923         _cflags_speed='-O3'
3924         _cflags_size='-Os'
3925     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3926         _type=icc
3927         _ident=$($_cc --version | head -n1)
3928         _depflags='-MMD'
3929         _cflags_speed='-O3'
3930         _cflags_size='-Os'
3931         _cflags_noopt='-O1'
3932         _flags_filter=icc_flags
3933     elif $_cc -v 2>&1 | grep -q xlc; then
3934         _type=xlc
3935         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3936         _cflags_speed='-O5'
3937         _cflags_size='-O5 -qcompact'
3938     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3939         _type=ccc
3940         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3941         _DEPFLAGS='-M'
3942         _cflags_speed='-fast'
3943         _cflags_size='-O1'
3944         _flags_filter=ccc_flags
3945     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3946         test -d "$sysroot" || die "No valid sysroot specified."
3947         _type=armcc
3948         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3949         armcc_conf="$PWD/armcc.conf"
3950         $_cc --arm_linux_configure                 \
3951              --arm_linux_config_file="$armcc_conf" \
3952              --configure_sysroot="$sysroot"        \
3953              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3954              die "Error creating armcc configuration file."
3955         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3956         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3957         as_default="${cross_prefix}gcc"
3958         _depflags='-MMD'
3959         _cflags_speed='-O3'
3960         _cflags_size='-Os'
3961     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3962         _type=tms470
3963         _ident=$($_cc -version | head -n1 | tr -s ' ')
3964         _flags='--gcc --abi=eabi -me'
3965         _cc_e='-ppl -fe=$@'
3966         _cc_o='-fe=$@'
3967         _depflags='-ppa -ppd=$(@:.o=.d)'
3968         _cflags_speed='-O3 -mf=5'
3969         _cflags_size='-O3 -mf=2'
3970         _flags_filter=tms470_flags
3971     elif $_cc -v 2>&1 | grep -q clang; then
3972         _type=clang
3973         _ident=$($_cc --version 2>/dev/null | head -n1)
3974         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3975         _cflags_speed='-O3'
3976         _cflags_size='-Os'
3977     elif $_cc -V 2>&1 | grep -q Sun; then
3978         _type=suncc
3979         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3980         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3981         _DEPFLAGS='-xM1 -xc99'
3982         _ldflags='-std=c99'
3983         _cflags_speed='-O5'
3984         _cflags_size='-O5 -xspace'
3985         _flags_filter=suncc_flags
3986     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3987         _type=pathscale
3988         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3989         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3990         _cflags_speed='-O2'
3991         _cflags_size='-Os'
3992         _flags_filter='filter_out -Wdisabled-optimization'
3993     elif $_cc -v 2>&1 | grep -q Open64; then
3994         _type=open64
3995         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3996         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3997         _cflags_speed='-O2'
3998         _cflags_size='-Os'
3999         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4000     elif $_cc -V 2>&1 | grep -q Portland; then
4001         _type=pgi
4002         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4003         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4004         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4005         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4006         _cflags_noopt="-O"
4007         _flags_filter=pgi_flags
4008     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4009         _type=armasm
4010         _ident=$($_cc | head -n1)
4011         # 4509: "This form of conditional instruction is deprecated"
4012         _flags="-nologo -ignore 4509"
4013         _flags_filter=armasm_flags
4014     elif $_cc 2>&1 | grep -q Intel; then
4015         _type=icl
4016         _ident=$($_cc 2>&1 | head -n1)
4017         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4018         # Not only is O3 broken on 13.x+ but it is slower on all previous
4019         # versions (tested) as well.
4020         _cflags_speed="-O2"
4021         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4022         if $_cc 2>&1 | grep -q Linker; then
4023             _ld_o='-out:$@'
4024         else
4025             _ld_o='-Fe$@'
4026         fi
4027         _cc_o='-Fo$@'
4028         _cc_e='-P'
4029         _flags_filter=icl_flags
4030         _ld_lib='lib%.a'
4031         _ld_path='-libpath:'
4032         # -Qdiag-error to make icl error when seeing certain unknown arguments
4033         _flags='-nologo -Qdiag-error:4044,10157'
4034         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4035         # with MSVC which enables it by default.
4036         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4037         disable stripping
4038     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4039         _type=msvc
4040         _ident=$($_cc 2>&1 | head -n1)
4041         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4042         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4043         _cflags_speed="-O2"
4044         _cflags_size="-O1"
4045         if $_cc -nologo- 2>&1 | grep -q Linker; then
4046             _ld_o='-out:$@'
4047         else
4048             _ld_o='-Fe$@'
4049         fi
4050         _cc_o='-Fo$@'
4051         _cc_e='-P -Fi$@'
4052         _flags_filter=msvc_flags
4053         _ld_lib='lib%.a'
4054         _ld_path='-libpath:'
4055         _flags='-nologo'
4056         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4057         disable stripping
4058     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4059         _type=cparser
4060         _ident=$($_cc --version | head -n1)
4061         _depflags='-MMD'
4062         _cflags_speed='-O4'
4063         _cflags_size='-O2'
4064         _flags_filter=cparser_flags
4065     fi
4066
4067     eval ${pfx}_type=\$_type
4068     eval ${pfx}_ident=\$_ident
4069 }
4070
4071 set_ccvars(){
4072     eval ${1}_C=\${_cc_c-\${${1}_C}}
4073     eval ${1}_E=\${_cc_e-\${${1}_E}}
4074     eval ${1}_O=\${_cc_o-\${${1}_O}}
4075
4076     if [ -n "$_depflags" ]; then
4077         eval ${1}_DEPFLAGS=\$_depflags
4078     else
4079         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4080         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4081         eval DEP${1}FLAGS=\$_flags
4082     fi
4083 }
4084
4085 probe_cc cc "$cc" "true"
4086 cflags_filter=$_flags_filter
4087 cflags_speed=$_cflags_speed
4088 cflags_size=$_cflags_size
4089 cflags_noopt=$_cflags_noopt
4090 add_cflags $_flags $_cflags
4091 cc_ldflags=$_ldflags
4092 set_ccvars CC
4093
4094 probe_cc hostcc "$host_cc"
4095 host_cflags_filter=$_flags_filter
4096 add_host_cflags  $_flags $_cflags
4097 set_ccvars HOSTCC
4098
4099 test -n "$cc_type" && enable $cc_type ||
4100     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4101
4102 : ${as_default:=$cc}
4103 : ${objcc_default:=$cc}
4104 : ${dep_cc_default:=$cc}
4105 : ${ld_default:=$cc}
4106 : ${host_ld_default:=$host_cc}
4107 set_default ar as objcc dep_cc ld ln_s host_ld windres
4108
4109 probe_cc as "$as"
4110 asflags_filter=$_flags_filter
4111 add_asflags $_flags $_cflags
4112 set_ccvars AS
4113
4114 probe_cc objcc "$objcc"
4115 objcflags_filter=$_flags_filter
4116 add_objcflags $_flags $_cflags
4117 set_ccvars OBJC
4118
4119 probe_cc ld "$ld"
4120 ldflags_filter=$_flags_filter
4121 add_ldflags $_flags $_ldflags
4122 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4123 LD_O=${_ld_o-$LD_O}
4124 LD_LIB=${_ld_lib-$LD_LIB}
4125 LD_PATH=${_ld_path-$LD_PATH}
4126
4127 probe_cc hostld "$host_ld"
4128 host_ldflags_filter=$_flags_filter
4129 add_host_ldflags $_flags $_ldflags
4130 HOSTLD_O=${_ld_o-$HOSTLD_O}
4131
4132 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4133     probe_cc depcc "$dep_cc"
4134     CCDEP=${_DEPCMD:-$DEPCMD}
4135     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4136     DEPCCFLAGS=$_flags
4137 fi
4138
4139 if $ar 2>&1 | grep -q Microsoft; then
4140     arflags="-nologo"
4141     ar_o='-out:$@'
4142 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4143     arflags="rq"
4144     ar_o='$@'
4145 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4146     arflags='-Xany -r -c'
4147     ar_o='$@'
4148 elif $ar 2>&1 | grep -q "\[D\] "; then
4149     arflags="rcD"
4150     ar_o='$@'
4151 else
4152     arflags="rc"
4153     ar_o='$@'
4154 fi
4155
4156 add_cflags $extra_cflags
4157 add_cxxflags $extra_cxxflags
4158 add_objcflags $extra_objcflags
4159 add_asflags $extra_cflags
4160
4161 if test -n "$sysroot"; then
4162     case "$cc_type" in
4163         gcc|llvm_gcc|clang)
4164             add_cppflags --sysroot="$sysroot"
4165             add_ldflags --sysroot="$sysroot"
4166 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4167             add_cppflags -isysroot "$sysroot"
4168             add_ldflags -isysroot "$sysroot"
4169         ;;
4170         tms470)
4171             add_cppflags -I"$sysinclude"
4172             add_ldflags  --sysroot="$sysroot"
4173         ;;
4174     esac
4175 fi
4176
4177 if test "$cpu" = host; then
4178     enabled cross_compile &&
4179         die "--cpu=host makes no sense when cross-compiling."
4180
4181     case "$cc_type" in
4182         gcc|llvm_gcc)
4183             check_native(){
4184                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4185                 sed -n "/cc1.*$1=/{
4186                             s/.*$1=\\([^ ]*\\).*/\\1/
4187                             p
4188                             q
4189                         }" $TMPE
4190             }
4191             cpu=$(check_native -march || check_native -mcpu)
4192         ;;
4193         clang)
4194             check_native(){
4195                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4196                 sed -n "/cc1.*-target-cpu /{
4197                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4198                             p
4199                             q
4200                         }" $TMPE
4201             }
4202             cpu=$(check_native -march)
4203         ;;
4204     esac
4205
4206     test "${cpu:-host}" = host &&
4207         die "--cpu=host not supported with compiler $cc"
4208 fi
4209
4210 # Deal with common $arch aliases
4211 case "$arch" in
4212     aarch64|arm64)
4213         arch="aarch64"
4214     ;;
4215     arm*|iPad*|iPhone*)
4216         arch="arm"
4217     ;;
4218     mips*|IP*)
4219         case "$arch" in
4220         *el)
4221             add_cppflags -EL
4222             add_ldflags -EL
4223         ;;
4224         *eb)
4225             add_cppflags -EB
4226             add_ldflags -EB
4227         ;;
4228         esac
4229         arch="mips"
4230     ;;
4231     parisc*|hppa*)
4232         arch="parisc"
4233     ;;
4234     "Power Macintosh"|ppc*|powerpc*)
4235         arch="ppc"
4236     ;;
4237     s390|s390x)
4238         arch="s390"
4239     ;;
4240     sh4|sh)
4241         arch="sh4"
4242     ;;
4243     sun4*|sparc*)
4244         arch="sparc"
4245     ;;
4246     tilegx|tile-gx)
4247         arch="tilegx"
4248     ;;
4249     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4250         arch="x86"
4251     ;;
4252 esac
4253
4254 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4255 enable $arch
4256
4257 # Add processor-specific flags
4258 if enabled aarch64; then
4259
4260     case $cpu in
4261         armv*)
4262             cpuflags="-march=$cpu"
4263         ;;
4264         *)
4265             cpuflags="-mcpu=$cpu"
4266         ;;
4267     esac
4268
4269 elif enabled alpha; then
4270
4271     cpuflags="-mcpu=$cpu"
4272
4273 elif enabled arm; then
4274
4275     check_arm_arch() {
4276         check_cpp_condition stddef.h \
4277             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4278             $cpuflags
4279     }
4280
4281     probe_arm_arch() {
4282         if   check_arm_arch 4;        then echo armv4
4283         elif check_arm_arch 4T;       then echo armv4t
4284         elif check_arm_arch 5;        then echo armv5
4285         elif check_arm_arch 5E;       then echo armv5e
4286         elif check_arm_arch 5T;       then echo armv5t
4287         elif check_arm_arch 5TE;      then echo armv5te
4288         elif check_arm_arch 5TEJ;     then echo armv5te
4289         elif check_arm_arch 6;        then echo armv6
4290         elif check_arm_arch 6J;       then echo armv6j
4291         elif check_arm_arch 6K;       then echo armv6k
4292         elif check_arm_arch 6Z;       then echo armv6z
4293         elif check_arm_arch 6ZK;      then echo armv6zk
4294         elif check_arm_arch 6T2;      then echo armv6t2
4295         elif check_arm_arch 7;        then echo armv7
4296         elif check_arm_arch 7A  7_A;  then echo armv7-a
4297         elif check_arm_arch 7S;       then echo armv7-a
4298         elif check_arm_arch 7R  7_R;  then echo armv7-r
4299         elif check_arm_arch 7M  7_M;  then echo armv7-m
4300         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4301         elif check_arm_arch 8A  8_A;  then echo armv8-a
4302         fi
4303     }
4304
4305     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4306
4307     case $cpu in
4308         armv*)
4309             cpuflags="-march=$cpu"
4310             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4311         ;;
4312         *)
4313             cpuflags="-mcpu=$cpu"
4314             case $cpu in
4315                 cortex-a*)                               subarch=armv7a  ;;
4316                 cortex-r*)                               subarch=armv7r  ;;
4317                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4318                 arm11*)                                  subarch=armv6   ;;
4319                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4320                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4321                 *)                             subarch=$(probe_arm_arch) ;;
4322             esac
4323         ;;
4324     esac
4325
4326     case "$subarch" in
4327         armv5t*)    enable fast_clz                ;;
4328         armv[6-8]*)
4329             enable fast_clz
4330             disabled fast_unaligned || enable fast_unaligned
4331             ;;
4332     esac
4333
4334 elif enabled avr32; then
4335
4336     case $cpu in
4337         ap7[02]0[0-2])
4338             subarch="avr32_ap"
4339             cpuflags="-mpart=$cpu"
4340         ;;
4341         ap)
4342             subarch="avr32_ap"
4343             cpuflags="-march=$cpu"
4344         ;;
4345         uc3[ab]*)
4346             subarch="avr32_uc"
4347             cpuflags="-mcpu=$cpu"
4348         ;;
4349         uc)
4350             subarch="avr32_uc"
4351             cpuflags="-march=$cpu"
4352         ;;
4353     esac
4354
4355 elif enabled bfin; then
4356
4357     cpuflags="-mcpu=$cpu"
4358
4359 elif enabled mips; then
4360
4361     cpuflags="-march=$cpu"
4362
4363     if [ "$cpu" != "generic" ]; then
4364         disable mips32r2
4365         disable mips32r5
4366         disable mips64r2
4367         disable mips32r6
4368         disable mips64r6
4369         disable loongson2
4370         disable loongson3
4371
4372         case $cpu in
4373             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4374                 enable mips32r2
4375                 disable msa
4376             ;;
4377             p5600|i6400|p6600)
4378                 disable mipsdsp
4379                 disable mipsdspr2
4380             ;;
4381             loongson*)
4382                 enable loongson2
4383                 enable loongson3
4384                 enable local_aligned_8 local_aligned_16 local_aligned_32
4385                 enable simd_align_16
4386                 enable fast_64bit
4387                 enable fast_clz
4388                 enable fast_cmov
4389                 enable fast_unaligned
4390                 disable aligned_stack
4391                 disable mipsfpu
4392                 disable mipsdsp
4393                 disable mipsdspr2
4394                 case $cpu in
4395                     loongson3*)
4396                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4397                     ;;
4398                     loongson2e)
4399                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4400                     ;;
4401                     loongson2f)
4402                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4403                     ;;
4404                 esac
4405             ;;
4406             *)
4407                 # Unknown CPU. Disable everything.
4408                 warn "unknown CPU. Disabling all MIPS optimizations."
4409                 disable mipsfpu
4410                 disable mipsdsp
4411                 disable mipsdspr2
4412                 disable msa
4413                 disable mmi
4414             ;;
4415         esac
4416
4417         case $cpu in
4418             24kc)
4419                 disable mipsfpu
4420                 disable mipsdsp
4421                 disable mipsdspr2
4422             ;;
4423             24kf*)
4424                 disable mipsdsp
4425                 disable mipsdspr2
4426             ;;
4427             24kec|34kc|1004kc)
4428                 disable mipsfpu
4429                 disable mipsdspr2
4430             ;;
4431             24kef*|34kf*|1004kf*)
4432                 disable mipsdspr2
4433             ;;
4434             74kc)
4435                 disable mipsfpu
4436             ;;
4437             p5600)
4438                 enable mips32r5
4439                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4440             ;;
4441             i6400)
4442                 enable mips64r6
4443                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4444             ;;
4445             p6600)
4446                 enable mips64r6
4447                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4448             ;;
4449         esac
4450     else
4451         # We do not disable anything. Is up to the user to disable the unwanted features.
4452         warn 'generic cpu selected'
4453     fi
4454
4455 elif enabled ppc; then
4456
4457     disable ldbrx
4458
4459     case $(tolower $cpu) in
4460         601|ppc601|powerpc601)
4461             cpuflags="-mcpu=601"
4462             disable altivec
4463         ;;
4464         603*|ppc603*|powerpc603*)
4465             cpuflags="-mcpu=603"
4466             disable altivec
4467         ;;
4468         604*|ppc604*|powerpc604*)
4469             cpuflags="-mcpu=604"
4470             disable altivec
4471         ;;
4472         g3|75*|ppc75*|powerpc75*)
4473             cpuflags="-mcpu=750"
4474             disable altivec
4475         ;;
4476         g4|745*|ppc745*|powerpc745*)
4477             cpuflags="-mcpu=7450"
4478             disable vsx
4479         ;;
4480         74*|ppc74*|powerpc74*)
4481             cpuflags="-mcpu=7400"
4482             disable vsx
4483         ;;
4484         g5|970|ppc970|powerpc970)
4485             cpuflags="-mcpu=970"
4486             disable vsx
4487         ;;
4488         power[3-6]*)
4489             cpuflags="-mcpu=$cpu"
4490             disable vsx
4491         ;;
4492         power[7-8]*)
4493             cpuflags="-mcpu=$cpu"
4494         ;;
4495         cell)
4496             cpuflags="-mcpu=cell"
4497             enable ldbrx
4498             disable vsx
4499         ;;
4500         e500mc)
4501             cpuflags="-mcpu=e500mc"
4502             disable altivec
4503         ;;
4504         e500v2)
4505             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4506             disable altivec
4507             disable dcbzl
4508         ;;
4509         e500)
4510             cpuflags="-mcpu=8540 -mhard-float"
4511             disable altivec
4512             disable dcbzl
4513         ;;
4514     esac
4515
4516 elif enabled sparc; then
4517
4518     case $cpu in
4519         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4520             cpuflags="-mcpu=$cpu"
4521         ;;
4522         ultrasparc*|niagara[234])
4523             cpuflags="-mcpu=$cpu"
4524         ;;
4525     esac
4526
4527 elif enabled x86; then
4528
4529     case $cpu in
4530         i[345]86|pentium)
4531             cpuflags="-march=$cpu"
4532             disable i686
4533             disable mmx
4534         ;;
4535         # targets that do NOT support nopl and conditional mov (cmov)
4536         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4537             cpuflags="-march=$cpu"
4538             disable i686
4539         ;;
4540         # targets that do support nopl and conditional mov (cmov)
4541         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4542         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4543         |amdfam10|barcelona|b[dt]ver*|znver*)
4544             cpuflags="-march=$cpu"
4545             enable i686
4546             enable fast_cmov
4547         ;;
4548         # targets that do support conditional mov but on which it's slow
4549         pentium4|pentium4m|prescott|nocona)
4550             cpuflags="-march=$cpu"
4551             enable i686
4552             disable fast_cmov
4553         ;;
4554     esac
4555
4556 fi
4557
4558 if [ "$cpu" != generic ]; then
4559     add_cflags  $cpuflags
4560     add_asflags $cpuflags
4561     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4562 fi
4563
4564 # compiler sanity check
4565 check_exec <<EOF
4566 int main(void){ return 0; }
4567 EOF
4568 if test "$?" != 0; then
4569     echo "$cc is unable to create an executable file."
4570     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4571         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4572         echo "Only do this if you know what cross compiling means."
4573     fi
4574     die "C compiler test failed."
4575 fi
4576
4577 add_cppflags -D_ISOC99_SOURCE
4578 add_cxxflags -D__STDC_CONSTANT_MACROS
4579 add_cxxflags -std=c++98
4580 check_cflags -std=c99
4581 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4582 #include <stdlib.h>
4583 EOF
4584 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4585 #include <stdlib.h>
4586 EOF
4587
4588 add_host_cppflags -D_ISOC99_SOURCE
4589 check_host_cflags -std=c99
4590 check_host_cflags -Wall
4591 check_host_cflags -O3
4592
4593 check_64bit(){
4594     arch32=$1
4595     arch64=$2
4596     expr=$3
4597     check_code cc "" "int test[2*($expr) - 1]" &&
4598         subarch=$arch64 || subarch=$arch32
4599 }
4600
4601 case "$arch" in
4602     aarch64|alpha|ia64)
4603         spic=$shared
4604     ;;
4605     mips)
4606         check_64bit mips mips64 '_MIPS_SIM > 1'
4607         spic=$shared
4608     ;;
4609     parisc)
4610         check_64bit parisc parisc64 'sizeof(void *) > 4'
4611         spic=$shared
4612     ;;
4613     ppc)
4614         check_64bit ppc ppc64 'sizeof(void *) > 4'
4615         spic=$shared
4616     ;;
4617     s390)
4618         check_64bit s390 s390x 'sizeof(void *) > 4'
4619         spic=$shared
4620     ;;
4621     sparc)
4622         check_64bit sparc sparc64 'sizeof(void *) > 4'
4623         spic=$shared
4624     ;;
4625     x86)
4626         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4627         # Treat x32 as x64 for now. Note it also needs spic=$shared
4628         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4629             subarch=x86_64
4630         if test "$subarch" = "x86_64"; then
4631             spic=$shared
4632         fi
4633     ;;
4634     ppc)
4635         check_cc <<EOF && subarch="ppc64"
4636         int test[(int)sizeof(char*) - 7];
4637 EOF
4638     ;;
4639 esac
4640
4641 enable $subarch
4642 enabled spic && enable_weak pic
4643
4644 # OS specific
4645 case $target_os in
4646     aix)
4647         SHFLAGS=-shared
4648         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4649         enabled shared && add_ldflags -Wl,-brtl
4650         ;;
4651     android)
4652         disable symver
4653         enable section_data_rel_ro
4654         SLIB_INSTALL_NAME='$(SLIBNAME)'
4655         SLIB_INSTALL_LINKS=
4656         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4657         ;;
4658     haiku)
4659         prefix_default="/boot/common"
4660         network_extralibs="-lnetwork"
4661         host_libs=
4662         ;;
4663     sunos)
4664         SHFLAGS='-shared -Wl,-h,$$(@F)'
4665         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4666         network_extralibs="-lsocket -lnsl"
4667         add_cppflags -D__EXTENSIONS__
4668         # When using suncc to build, the Solaris linker will mark
4669         # an executable with each instruction set encountered by
4670         # the Solaris assembler.  As our libraries contain their own
4671         # guards for processor-specific code, instead suppress
4672         # generation of the HWCAPS ELF section on Solaris x86 only.
4673         enabled_all suncc x86 &&
4674             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4675             add_ldflags -Wl,-M,mapfile
4676         nm_default='nm -P -g'
4677         version_script='-M'
4678         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4679         ;;
4680     netbsd)
4681         disable symver
4682         oss_indev_extralibs="-lossaudio"
4683         oss_outdev_extralibs="-lossaudio"
4684         enabled gcc || check_ldflags -Wl,-zmuldefs
4685         ;;
4686     openbsd|bitrig)
4687         disable symver
4688         SHFLAGS='-shared'
4689         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4690         SLIB_INSTALL_LINKS=
4691         oss_indev_extralibs="-lossaudio"
4692         oss_outdev_extralibs="-lossaudio"
4693         ;;
4694     dragonfly)
4695         disable symver
4696         ;;
4697     freebsd)
4698         ;;
4699     bsd/os)
4700         add_extralibs -lpoll -lgnugetopt
4701         strip="strip -d"
4702         ;;
4703     darwin)
4704         enabled ppc && add_asflags -force_cpusubtype_ALL
4705         install_name_dir_default='$(SHLIBDIR)'
4706         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4707         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4708         strip="${strip} -x"
4709         add_ldflags -Wl,-dynamic,-search_paths_first
4710         SLIBSUF=".dylib"
4711         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4712         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4713         objformat="macho"
4714         enabled x86_64 && objformat="macho64"
4715         enabled_any pic shared x86_64 ||
4716             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4717         check_header dispatch/dispatch.h &&
4718             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4719         version_script='-exported_symbols_list'
4720         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4721         ;;
4722     msys*)
4723         die "Native MSYS builds are discouraged, please use the MINGW environment."
4724         ;;
4725     mingw32*|mingw64*)
4726         if test $target_os = "mingw32ce"; then
4727             disable network
4728         else
4729             target_os=mingw32
4730         fi
4731         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4732         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4733         LIBTARGET=i386
4734         if enabled x86_64; then
4735             LIBTARGET="i386:x86-64"
4736         elif enabled arm; then
4737             LIBTARGET=arm-wince
4738         fi
4739         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4740         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4741         shlibdir_default="$bindir_default"
4742         SLIBPREF=""
4743         SLIBSUF=".dll"
4744         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4745         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4746         dlltool="${cross_prefix}dlltool"
4747         if check_cmd lib.exe -list; then
4748             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4749             if enabled x86_64; then
4750                 LIBTARGET=x64
4751             fi
4752         elif check_cmd $dlltool --version; then
4753             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4754         fi
4755         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4756         SLIB_INSTALL_LINKS=
4757         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4758         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4759         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4760         objformat="win32"
4761         ranlib=:
4762         enable dos_paths
4763         check_ldflags -Wl,--nxcompat,--dynamicbase
4764         # Lets work around some stupidity in binutils.
4765         # ld will strip relocations from executables even though we need them
4766         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4767         # however ld then forgets what the entry point should be (oops) so we
4768         # have to manually (re)set it.
4769         if enabled x86_32; then
4770             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4771         elif enabled x86_64; then
4772             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4773             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4774             # Set image base >4GB for extra entropy with HEASLR
4775             add_ldexeflags -Wl,--image-base,0x140000000
4776             append SHFLAGS -Wl,--image-base,0x180000000
4777         fi
4778         ;;
4779     win32|win64)
4780         disable symver
4781         if enabled shared; then
4782             # Link to the import library instead of the normal static library
4783             # for shared libs.
4784             LD_LIB='%.lib'
4785             # Cannot build both shared and static libs with MSVC or icl.
4786             disable static
4787         fi
4788         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4789         shlibdir_default="$bindir_default"
4790         SLIBPREF=""
4791         SLIBSUF=".dll"
4792         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4793         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4794         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4795         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4796         SLIB_INSTALL_LINKS=
4797         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4798         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4799         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4800         objformat="win32"
4801         ranlib=:
4802         enable dos_paths
4803         ;;
4804     cygwin*)
4805         target_os=cygwin
4806         shlibdir_default="$bindir_default"
4807         SLIBPREF="cyg"
4808         SLIBSUF=".dll"
4809         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4810         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4811         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4812         SLIB_INSTALL_LINKS=
4813         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4814         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4815         objformat="win32"
4816         enable dos_paths
4817         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4818         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4819         ;;
4820     *-dos|freedos|opendos)
4821         network_extralibs="-lsocket"
4822         objformat="coff"
4823         enable dos_paths
4824         add_cppflags -U__STRICT_ANSI__
4825         ;;
4826     linux)
4827         enable dv1394
4828         enable section_data_rel_ro
4829         ;;
4830     irix*)
4831         target_os=irix
4832         ranlib="echo ignoring ranlib"
4833         ;;
4834     os/2*)
4835         strip="lxlite -CS"
4836         objformat="aout"
4837         add_cppflags -D_GNU_SOURCE
4838         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4839         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4840         LIBSUF="_s.a"
4841         SLIBPREF=""
4842         SLIBSUF=".dll"
4843         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4844         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4845         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4846             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4847             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4848             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4849             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4850         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4851             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4852         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4853         SLIB_INSTALL_LINKS=
4854         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4855         enable dos_paths
4856         enable_weak os2threads
4857         ;;
4858     gnu/kfreebsd)
4859         add_cppflags -D_BSD_SOURCE
4860         ;;
4861     gnu)
4862         ;;
4863     qnx)
4864         add_cppflags -D_QNX_SOURCE
4865         network_extralibs="-lsocket"
4866         ;;
4867     symbian)
4868         SLIBSUF=".dll"
4869         enable dos_paths
4870         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4871         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4872         add_ldflags -Wl,--target1-abs,--no-undefined \
4873                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4874                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4875         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4876                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4877                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4878         ;;
4879     osf1)
4880         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4881         ;;
4882     minix)
4883         ;;
4884     plan9)
4885         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4886                      -D_REENTRANT_SOURCE        \
4887                      -D_RESEARCH_SOURCE         \
4888                      -DFD_SETSIZE=96            \
4889                      -DHAVE_SOCK_OPTS
4890         add_compat strtod.o strtod=avpriv_strtod
4891         network_extralibs='-lbsd'
4892         exeobjs=compat/plan9/main.o
4893         disable ffserver
4894         cp_f='cp'
4895         ;;
4896     none)
4897         ;;
4898     *)
4899         die "Unknown OS '$target_os'."
4900         ;;
4901 esac
4902
4903 # test if creating links works
4904 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4905 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4906 mkdir "$link_dest"
4907 $ln_s "$link_dest" "$link_name"
4908 touch "$link_dest/test_file"
4909 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4910     # create link to source path
4911     [ -e src ] && rm src
4912     $ln_s "$source_path" src
4913     source_link=src
4914 else
4915     # creating directory links doesn't work
4916     # fall back to using the full source path
4917     source_link="$source_path"
4918 fi
4919 # cleanup
4920 rm -r "$link_dest"
4921 rm -r "$link_name"
4922
4923 # determine libc flavour
4924
4925 probe_libc(){
4926     pfx=$1
4927     pfx_no_=${pfx%_}
4928     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4929     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4930         eval ${pfx}libc_type=uclibc
4931         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4932     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4933         eval ${pfx}libc_type=glibc
4934         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4935     # MinGW headers can be installed on Cygwin, so check for newlib first.
4936     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4937         eval ${pfx}libc_type=newlib
4938         add_${pfx}cppflags -U__STRICT_ANSI__
4939     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4940     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4941         eval ${pfx}libc_type=mingw64
4942         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4943             add_compat msvcrt/snprintf.o
4944             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4945         fi
4946         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4947         eval test \$${pfx_no_}cc_type = "gcc" &&
4948             add_${pfx}cppflags -D__printf__=__gnu_printf__
4949     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4950          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4951         eval ${pfx}libc_type=mingw32
4952         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4953             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4954             die "ERROR: MinGW32 runtime version must be >= 3.15."
4955         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4956         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
4957             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4958         eval test \$${pfx_no_}cc_type = "gcc" &&
4959             add_${pfx}cppflags -D__printf__=__gnu_printf__
4960     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4961         eval ${pfx}libc_type=msvcrt
4962         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4963             if [ "$pfx" = host_ ]; then
4964                 add_host_cppflags -Dsnprintf=_snprintf
4965             else
4966                 add_compat strtod.o strtod=avpriv_strtod
4967                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4968                                              _snprintf=avpriv_snprintf  \
4969                                              vsnprintf=avpriv_vsnprintf
4970             fi
4971         fi
4972         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4973         # 0x601 by default unless something else is set by the user.
4974         # This can easily lead to us detecting functions only present
4975         # in such new versions and producing binaries requiring windows 7.0.
4976         # Therefore explicitly set the default to XP unless the user has
4977         # set something else on the command line.
4978         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4979         # family. For these cases, configure is free to use any functions
4980         # found in the SDK headers by default. (Alternatively, we could force
4981         # _WIN32_WINNT to 0x0602 in that case.)
4982         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4983             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4984 #ifdef WINAPI_FAMILY
4985 #include <winapifamily.h>
4986 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4987 #error not desktop
4988 #endif
4989 #endif
4990 EOF
4991     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4992         eval ${pfx}libc_type=klibc
4993     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4994         eval ${pfx}libc_type=bionic
4995     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4996         eval ${pfx}libc_type=solaris
4997         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4998     fi
4999     check_${pfx}cc <<EOF
5000 #include <time.h>
5001 void *v = localtime_r;
5002 EOF
5003 test "$?" != 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
5004 #include <time.h>
5005 void *v = localtime_r;
5006 EOF
5007
5008 }
5009
5010 probe_libc
5011 test -n "$libc_type" && enable libc_$libc_type
5012 probe_libc host_
5013 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5014
5015 case $libc_type in
5016     bionic)
5017         add_compat strtod.o strtod=avpriv_strtod
5018         ;;
5019 esac
5020
5021 # hacks for compiler/libc/os combinations
5022
5023 if enabled_all tms470 libc_glibc; then
5024     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5025     add_cppflags -D__USER_LABEL_PREFIX__=
5026     add_cppflags -D__builtin_memset=memset
5027     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5028     add_cflags   -pds=48    # incompatible redefinition of macro
5029 fi
5030
5031 if enabled_all ccc libc_glibc; then
5032     add_ldflags -Wl,-z,now  # calls to libots crash without this
5033 fi
5034
5035 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5036     add_cppflags '-I\$(SRC_PATH)/compat/float'
5037
5038 esc(){
5039     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5040 }
5041
5042 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5043
5044 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5045
5046 set_default libdir
5047 : ${shlibdir_default:="$libdir"}
5048 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5049
5050 set_default $PATHS_LIST
5051 set_default nm
5052
5053 # we need to build at least one lib type
5054 if ! enabled_any static shared; then
5055     cat <<EOF
5056 At least one library type must be built.
5057 Specify --enable-static to build the static libraries or --enable-shared to
5058 build the shared libraries as well. To only build the shared libraries specify
5059 --disable-static in addition to --enable-shared.
5060 EOF
5061     exit 1
5062 fi
5063
5064 die_license_disabled() {
5065     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5066 }
5067
5068 die_license_disabled_gpl() {
5069     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5070 }
5071
5072 die_license_disabled gpl frei0r
5073 die_license_disabled gpl libcdio
5074 die_license_disabled gpl librubberband
5075 die_license_disabled gpl libsmbclient
5076 die_license_disabled gpl libvidstab
5077 die_license_disabled gpl libx264
5078 die_license_disabled gpl libx265
5079 die_license_disabled gpl libxavs
5080 die_license_disabled gpl libxvid
5081 die_license_disabled gpl x11grab
5082
5083 die_license_disabled nonfree cuda
5084 die_license_disabled nonfree cuvid
5085 die_license_disabled nonfree libnpp
5086 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5087 enabled gpl && die_license_disabled_gpl nonfree openssl
5088
5089 die_license_disabled version3 gmp
5090 die_license_disabled version3 libopencore_amrnb
5091 die_license_disabled version3 libopencore_amrwb
5092 die_license_disabled version3 libsmbclient
5093 die_license_disabled version3 libvo_amrwbenc
5094
5095 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5096
5097 disabled optimizations || check_cflags -fomit-frame-pointer
5098
5099 enable_weak_pic() {
5100     disabled pic && return
5101     enable pic
5102     add_cppflags -DPIC
5103     case "$target_os" in
5104     mingw*|cygwin*)
5105         ;;
5106     *)
5107         add_cflags -fPIC
5108         ;;
5109     esac
5110     add_asflags  -fPIC
5111 }
5112
5113 enabled pic && enable_weak_pic
5114
5115 check_cc <<EOF || die "Symbol mangling check failed."
5116 int ff_extern;
5117 EOF
5118 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5119 extern_prefix=${sym%%ff_extern*}
5120
5121 check_cc <<EOF && enable_weak inline_asm
5122 void foo(void) { __asm__ volatile ("" ::); }
5123 EOF
5124
5125 _restrict=
5126 for restrict_keyword in restrict __restrict__ __restrict; do
5127     check_cc <<EOF && _restrict=$restrict_keyword && break
5128 void foo(char * $restrict_keyword p);
5129 EOF
5130 done
5131
5132 check_cc <<EOF && enable pragma_deprecated
5133 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5134 EOF
5135
5136 check_cc <<EOF && enable attribute_packed
5137 struct { int x; } __attribute__((packed)) x;
5138 EOF
5139
5140 check_cc <<EOF && enable attribute_may_alias
5141 union { int x; } __attribute__((may_alias)) x;
5142 EOF
5143
5144 check_cc <<EOF || die "endian test failed"
5145 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5146 EOF
5147 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5148
5149 if ! enabled ppc64 || enabled bigendian; then
5150     disable vsx
5151 fi
5152
5153 check_gas() {
5154     log "check_gas using '$as' as AS"
5155     # :vararg is used on aarch64, arm and ppc altivec
5156     check_as <<EOF || return 1
5157 .macro m n, y:vararg=0
5158 \n: .int \y
5159 .endm
5160 m x
5161 EOF
5162     # .altmacro is only used in arm asm
5163     ! enabled arm || check_as <<EOF || return 1
5164 .altmacro
5165 EOF
5166     enable gnu_as
5167     return 0
5168 }
5169
5170 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5171     nogas=:
5172     enabled_any arm aarch64 && nogas=die
5173     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5174     as_noop=-v
5175
5176     case $as_type in
5177         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5178         gcc)  gaspp_as_type=gas ;;
5179         *)    gaspp_as_type=$as_type ;;
5180     esac
5181
5182     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5183
5184     test "${as#*gas-preprocessor.pl}" != "$as" ||
5185     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5186         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5187
5188     if ! check_gas ; then
5189         as=${gas:=$as}
5190         check_gas || \
5191             $nogas "GNU assembler not found, install/update gas-preprocessor"
5192     fi
5193
5194     check_as <<EOF && enable as_func
5195 .func test
5196 .endfunc
5197 EOF
5198 fi
5199
5200 check_inline_asm inline_asm_labels '"1:\n"'
5201
5202 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5203
5204 if enabled aarch64; then
5205     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5206     # internal assembler in clang 3.3 does not support this instruction
5207     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5208     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5209
5210     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5211
5212 elif enabled alpha; then
5213
5214     check_cflags -mieee
5215
5216 elif enabled arm; then
5217
5218     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5219
5220     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5221 float func(float a, float b){ return a+b; }
5222 EOF
5223
5224     enabled thumb && check_cflags -mthumb || check_cflags -marm
5225
5226     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5227         enable vfp_args
5228     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5229         enable vfp_args
5230     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5231         case "${cross_prefix:-$cc}" in
5232             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5233             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5234 __asm__ (".eabi_attribute 28, 1");
5235 int main(void) { return 0; }
5236 EOF
5237         esac
5238         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5239     fi
5240
5241     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5242     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5243     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5244     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5245     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5246     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5247     enabled setend  && check_insn setend  'setend be'
5248
5249     [ $target_os = linux ] || [ $target_os = android ] ||
5250         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5251             $ARCH_EXT_LIST_ARM
5252
5253     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5254
5255     check_as <<EOF && enable as_dn_directive
5256 ra .dn d0.i16
5257 .unreq ra
5258 EOF
5259
5260     # llvm's integrated assembler supports .object_arch from llvm 3.5
5261     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5262 .object_arch armv4
5263 EOF
5264
5265     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5266
5267 elif enabled mips; then
5268
5269     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5270     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5271     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5272
5273     # Enable minimum ISA based on selected options
5274     if enabled mips64; then
5275         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5276         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5277         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5278     else
5279         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5280         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5281         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5282         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5283     fi
5284
5285     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5286     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5287     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5288     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5289     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5290
5291 elif enabled parisc; then
5292
5293     if enabled gcc; then
5294         case $($cc -dumpversion) in
5295             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5296         esac
5297     fi
5298
5299 elif enabled ppc; then
5300
5301     enable local_aligned_8 local_aligned_16 local_aligned_32
5302
5303     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5304     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5305     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5306     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5307
5308     # AltiVec flags: The FSF version of GCC differs from the Apple version
5309     if enabled altivec; then
5310         check_cflags -maltivec -mabi=altivec &&
5311         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5312         check_cflags -faltivec
5313
5314         # check if our compiler supports Motorola AltiVec C API
5315         check_cc <<EOF || disable altivec
5316 $inc_altivec_h
5317 int main(void) {
5318     vector signed int v1 = (vector signed int) { 0 };
5319     vector signed int v2 = (vector signed int) { 1 };
5320     v1 = vec_add(v1, v2);
5321     return 0;
5322 }
5323 EOF
5324
5325         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5326     fi
5327
5328     if enabled vsx; then
5329         check_cflags -mvsx &&
5330         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5331     fi
5332
5333     if enabled power8; then
5334         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5335     fi
5336
5337 elif enabled x86; then
5338
5339     check_builtin rdtsc    intrin.h   "__rdtsc()"
5340     check_builtin mm_empty mmintrin.h "_mm_empty()"
5341
5342     enable local_aligned_8 local_aligned_16 local_aligned_32
5343
5344     # check whether EBP is available on x86
5345     # As 'i' is stored on the stack, this program will crash
5346     # if the base pointer is used to access it because the
5347     # base pointer is cleared in the inline assembly code.
5348     check_exec_crash <<EOF && enable ebp_available
5349 volatile int i=0;
5350 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5351 return i;
5352 EOF
5353
5354     # check whether EBX is available on x86
5355     check_inline_asm ebx_available '""::"b"(0)' &&
5356         check_inline_asm ebx_available '"":::"%ebx"'
5357
5358     # check whether xmm clobbers are supported
5359     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5360
5361     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5362         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5363
5364     # check whether binutils is new enough to compile SSSE3/MMXEXT
5365     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5366     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5367
5368     if ! disabled_any asm mmx yasm; then
5369         if check_cmd $yasmexe --version; then
5370             enabled x86_64 && yasm_extra="-m amd64"
5371             yasm_debug="-g dwarf2"
5372         elif check_cmd nasm -v; then
5373             yasmexe=nasm
5374             yasm_debug="-g -F dwarf"
5375             if enabled x86_64; then
5376                 case "$objformat" in
5377                     elf)   objformat=elf64 ;;
5378                     win32) objformat=win64 ;;
5379                 esac
5380             fi
5381         fi
5382
5383         YASMFLAGS="-f $objformat $yasm_extra"
5384         enabled pic               && append YASMFLAGS "-DPIC"
5385         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5386         case "$objformat" in
5387             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5388         esac
5389
5390         check_yasm "movbe ecx, [5]" && enable yasm ||
5391             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5392         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5393         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5394         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5395         check_yasm "CPU amdnop" || disable cpunop
5396     fi
5397
5398     case "$cpu" in
5399         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5400             disable fast_clz
5401         ;;
5402     esac
5403
5404 fi
5405
5406 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5407
5408 check_ldflags -Wl,--as-needed
5409 check_ldflags -Wl,-z,noexecstack
5410
5411 if check_func dlopen && check_func dlsym; then
5412     ldl=
5413 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5414     ldl=-ldl
5415 fi
5416
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 avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5665                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5666                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5667 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
5668                                die "ERROR: CUDA not found"; }
5669 enabled cuvid             && { add_cflags -I$source_path;
5670                                check_lib "compat/cuda/cuviddec.h" cuvidCreateDecoder -lnvcuvid ||
5671                                die "ERROR: CUVID not found"; } &&
5672                              { enabled cuda ||
5673                                die "ERROR: CUVID requires CUDA"; }
5674 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5675 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5676 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5677 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5678                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5679 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5680 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5681 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5682 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5683                                check_lib2 "dlfcn.h" dlopen -ldl; }
5684 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5685 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5686 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5687 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5688 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5689 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5690                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5691                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5692 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5693 enabled libebur128        && require ebur128 ebur128.h ebur128_relative_threshold -lebur128
5694 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5695                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5696                                  warn "using libfdk without pkg-config"; } }
5697 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"
5698 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5699 enabled fontconfig        && enable libfontconfig
5700 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5701 enabled libfreetype       && require_libfreetype
5702 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5703 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5704 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5705                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5706                                done || die "ERROR: libgsm not found"; }
5707 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5708 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5709 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5710 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5711 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5712 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5713 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5714 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5715 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5716 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5717                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5718                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5719                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5720 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5721 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5722                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5723                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5724                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5725                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5726                                die "ERROR: libopenjpeg not found"; }
5727 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5728 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5729 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5730 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5731 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5732 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5733 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5734 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5735                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5736 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5737 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5738 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5739 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5740 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5741 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5742 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5743                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5744                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5745 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5746 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5747 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5748 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5749
5750 enabled libvpx            && {
5751     enabled libvpx_vp8_decoder && {
5752         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5753             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5754                 die "ERROR: libvpx decoder version must be >=0.9.1";
5755     }
5756     enabled libvpx_vp8_encoder && {
5757         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5758             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5759                 die "ERROR: libvpx encoder version must be >=0.9.7";
5760     }
5761     enabled libvpx_vp9_decoder && {
5762         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5763             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5764                 disable libvpx_vp9_decoder;
5765     }
5766     enabled libvpx_vp9_encoder && {
5767         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5768             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5769                 disable libvpx_vp9_encoder;
5770     }
5771     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5772         die "libvpx enabled but no supported decoders found"
5773     fi
5774 }
5775
5776 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5777 enabled libwebp           && {
5778     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5779     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5780 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5781                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5782                                  warn "using libx264 without pkg-config"; } } &&
5783                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5784                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5785                              { check_cpp_condition x264.h "X264_MPEG2" &&
5786                                enable libx262; }
5787 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5788                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5789                                die "ERROR: libx265 version must be >= 68."; }
5790 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5791 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5792 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5793 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5794 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5795                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5796                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5797 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5798 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5799                                 { ! enabled cross_compile && {
5800                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5801                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5802                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5803                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5804                                die "ERROR: mmal not found"; }
5805 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5806
5807 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5808 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5809                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5810                                die "ERROR: openal not found"; } &&
5811                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5812                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5813 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5814                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5815                                die "ERROR: opencl not found"; } &&
5816                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5817                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5818                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5819 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5820                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5821                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5822                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5823                                die "ERROR: opengl not found."
5824                              }
5825 enabled omx_rpi && enable omx
5826 enabled omx               && { check_header OMX_Core.h ||
5827                                 { ! enabled cross_compile && enabled omx_rpi && {
5828                                     add_cflags -isystem/opt/vc/include/IL ; }
5829                                 check_header OMX_Core.h ; } ||
5830                                die "ERROR: OpenMAX IL headers not found"; }
5831 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5832                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5833                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5834                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5835                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5836                                die "ERROR: openssl not found"; }
5837 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5838
5839 # libdc1394 check
5840 if enabled libdc1394; then
5841     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5842         enable libdc1394_2; } ||
5843     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5844         enable libdc1394_1; } ||
5845     die "ERROR: No version of libdc1394 found "
5846 fi
5847
5848 if enabled gcrypt; then
5849     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5850     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5851         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5852         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5853         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5854             die "ERROR: gcrypt not found"
5855         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5856     else
5857         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5858     fi
5859 fi
5860
5861 disabled sdl && disable sdl2
5862 if ! disabled sdl2; then
5863     SDL2_CONFIG="${cross_prefix}sdl2-config"
5864     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5865         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5866         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5867         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5868     else
5869       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5870         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5871         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5872         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5873         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5874         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5875       fi
5876     fi
5877     if test $target_os = "mingw32"; then
5878         sdl2_libs="$sdl2_libs -mconsole"
5879     fi
5880 fi
5881 enabled sdl2 && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5882
5883 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5884     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5885     enable securetransport; }
5886
5887 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5888                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5889
5890 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5891 enabled makeinfo \
5892     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5893     && enable makeinfo_html || disable makeinfo_html
5894 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5895 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5896 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5897 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5898
5899 check_header linux/fb.h
5900 check_header linux/videodev.h
5901 check_header linux/videodev2.h
5902 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5903
5904 check_header sys/videoio.h
5905 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5906
5907 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5908 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5909 # w32api 3.12 had it defined wrong
5910 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5911
5912 check_type "dshow.h" IBaseFilter
5913
5914 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5915 { check_header dev/bktr/ioctl_meteor.h &&
5916   check_header dev/bktr/ioctl_bt848.h; } ||
5917 { check_header machine/ioctl_meteor.h &&
5918   check_header machine/ioctl_bt848.h; } ||
5919 { check_header dev/video/meteor/ioctl_meteor.h &&
5920   check_header dev/video/bktr/ioctl_bt848.h; } ||
5921 check_header dev/ic/bt8xx.h
5922
5923 check_header sndio.h
5924 if check_struct sys/soundcard.h audio_buf_info bytes; then
5925     enable_safe sys/soundcard.h
5926 else
5927     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5928     #include <sys/soundcard.h>
5929     audio_buf_info abc;
5930 EOF
5931 fi
5932 check_header soundcard.h
5933
5934 enabled_any alsa_indev alsa_outdev &&
5935     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5936
5937 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5938     check_func jack_port_get_latency_range -ljack
5939
5940 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5941
5942 if enabled libcdio; then
5943     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5944     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5945     die "ERROR: No usable libcdio/cdparanoia found"
5946 fi
5947
5948 enabled xlib &&
5949     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5950
5951 if ! disabled libxcb; then
5952     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5953         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5954     } && disable x11grab && enable libxcb
5955
5956 if enabled libxcb; then
5957     disabled libxcb_shm || {
5958         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5959             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5960         } && check_header sys/shm.h && enable libxcb_shm; }
5961
5962     disabled libxcb_xfixes || {
5963         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5964             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5965         } && enable libxcb_xfixes; }
5966
5967     disabled libxcb_shape || {
5968         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5969             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5970         } && enable libxcb_shape; }
5971
5972     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5973     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5974 fi
5975 fi
5976
5977 if enabled x11grab; then
5978     enabled xlib || die "ERROR: Xlib not found"
5979     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5980     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5981 fi
5982
5983 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5984
5985 enabled dxva2api_h &&
5986     check_cc <<EOF && enable dxva2api_cobj
5987 #define _WIN32_WINNT 0x0600
5988 #define COBJMACROS
5989 #include <windows.h>
5990 #include <d3d9.h>
5991 #include <dxva2api.h>
5992 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5993 EOF
5994
5995 enabled vaapi &&
5996     check_lib va/va.h vaInitialize -lva ||
5997     disable vaapi
5998
5999 enabled vaapi &&
6000     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6001     disable vaapi
6002
6003 if enabled vaapi ; then
6004     enabled xlib &&
6005     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6006     enable vaapi_x11
6007
6008     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6009     enable vaapi_drm
6010 fi
6011
6012 enabled vdpau &&
6013     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6014     disable vdpau
6015
6016 enabled vdpau && enabled xlib &&
6017     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6018     enable vdpau_x11
6019
6020 if enabled x86; then
6021     case $target_os in
6022         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6023             ;;
6024         *)
6025             disable nvenc
6026             ;;
6027     esac
6028 else
6029     disable nvenc
6030 fi
6031
6032 enabled nvenc &&
6033     check_cc -I$source_path <<EOF || disable nvenc
6034 #include "compat/nvenc/nvEncodeAPI.h"
6035 NV_ENCODE_API_FUNCTION_LIST flist;
6036 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6037 int main(void) { return 0; }
6038 EOF
6039
6040 # Funny iconv installations are not unusual, so check it after all flags have been set
6041 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6042
6043 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6044
6045 # add some useful compiler flags if supported
6046 check_cflags -Wdeclaration-after-statement
6047 check_cflags -Wall
6048 check_cflags -Wdisabled-optimization
6049 check_cflags -Wpointer-arith
6050 check_cflags -Wredundant-decls
6051 check_cflags -Wwrite-strings
6052 check_cflags -Wtype-limits
6053 check_cflags -Wundef
6054 check_cflags -Wmissing-prototypes
6055 check_cflags -Wno-pointer-to-int-cast
6056 check_cflags -Wstrict-prototypes
6057 check_cflags -Wempty-body
6058 enabled extra_warnings && check_cflags -Winline
6059 enabled extra_warnings && check_cflags -Wcast-qual
6060
6061 check_disable_warning(){
6062     warning_flag=-W${1#-Wno-}
6063     test_cflags $warning_flag && add_cflags $1
6064 }
6065
6066 check_disable_warning -Wno-parentheses
6067 check_disable_warning -Wno-switch
6068 check_disable_warning -Wno-format-zero-length
6069 check_disable_warning -Wno-pointer-sign
6070 check_disable_warning -Wno-unused-const-variable
6071
6072 # add some linker flags
6073 check_ldflags -Wl,--warn-common
6074 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6075 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6076 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6077 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6078
6079 # add some strip flags
6080 # -wN '..@*' is more selective than -x, but not available everywhere.
6081 check_stripflags -wN \'..@*\' || check_stripflags -x
6082
6083 enabled neon_clobber_test &&
6084     check_ldflags -Wl,--wrap,avcodec_open2              \
6085                   -Wl,--wrap,avcodec_decode_audio4      \
6086                   -Wl,--wrap,avcodec_decode_video2      \
6087                   -Wl,--wrap,avcodec_decode_subtitle2   \
6088                   -Wl,--wrap,avcodec_encode_audio2      \
6089                   -Wl,--wrap,avcodec_encode_video2      \
6090                   -Wl,--wrap,avcodec_send_packet        \
6091                   -Wl,--wrap,avcodec_receive_frame      \
6092                   -Wl,--wrap,avcodec_send_frame         \
6093                   -Wl,--wrap,avcodec_receive_packet     \
6094                   -Wl,--wrap,avcodec_encode_subtitle    \
6095                   -Wl,--wrap,swr_convert                \
6096                   -Wl,--wrap,avresample_convert ||
6097     disable neon_clobber_test
6098
6099 enabled xmm_clobber_test &&
6100     check_ldflags -Wl,--wrap,avcodec_open2              \
6101                   -Wl,--wrap,avcodec_decode_audio4      \
6102                   -Wl,--wrap,avcodec_decode_video2      \
6103                   -Wl,--wrap,avcodec_decode_subtitle2   \
6104                   -Wl,--wrap,avcodec_encode_audio2      \
6105                   -Wl,--wrap,avcodec_encode_video2      \
6106                   -Wl,--wrap,avcodec_encode_subtitle    \
6107                   -Wl,--wrap,avcodec_send_packet        \
6108                   -Wl,--wrap,avcodec_receive_frame      \
6109                   -Wl,--wrap,avcodec_send_frame         \
6110                   -Wl,--wrap,avcodec_receive_packet     \
6111                   -Wl,--wrap,swr_convert                \
6112                   -Wl,--wrap,avresample_convert         \
6113                   -Wl,--wrap,sws_scale ||
6114     disable xmm_clobber_test
6115
6116 check_ld "cc" <<EOF && enable proper_dce
6117 extern const int array[512];
6118 static inline int func(void) { return array[0]; }
6119 int main(void) { return 0; }
6120 EOF
6121
6122 if enabled proper_dce; then
6123     echo "X { local: *; };" > $TMPV
6124     if test_ldflags -Wl,${version_script},$TMPV; then
6125         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6126         check_cc <<EOF && enable symver_asm_label
6127 void ff_foo(void) __asm__ ("av_foo@VERSION");
6128 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6129 EOF
6130         check_cc <<EOF && enable symver_gnu_asm
6131 __asm__(".symver ff_foo,av_foo@VERSION");
6132 void ff_foo(void) {}
6133 EOF
6134     fi
6135 fi
6136
6137 if [ -z "$optflags" ]; then
6138     if enabled small; then
6139         optflags=$cflags_size
6140     elif enabled optimizations; then
6141         optflags=$cflags_speed
6142     else
6143         optflags=$cflags_noopt
6144     fi
6145 fi
6146
6147 check_optflags(){
6148     check_cflags "$@"
6149     enabled lto && check_ldflags "$@"
6150 }
6151
6152
6153 if enabled lto; then
6154     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6155     check_cflags  -flto
6156     check_ldflags -flto $cpuflags
6157     disable inline_asm_direct_symbol_refs
6158 fi
6159
6160 check_optflags $optflags
6161 check_optflags -fno-math-errno
6162 check_optflags -fno-signed-zeros
6163
6164 enabled ftrapv && check_cflags -ftrapv
6165
6166 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6167 int x;
6168 EOF
6169
6170
6171 if enabled icc; then
6172     # Just warnings, no remarks
6173     check_cflags -w1
6174     # -wd: Disable following warnings
6175     # 144, 167, 556: -Wno-pointer-sign
6176     # 188: enumerated type mixed with another type
6177     # 1292: attribute "foo" ignored
6178     # 1419: external declaration in primary source file
6179     # 10006: ignoring unknown option -fno-signed-zeros
6180     # 10148: ignoring unknown option -Wno-parentheses
6181     # 10156: ignoring option '-W'; no argument required
6182     # 13200: No EMMS instruction before call to function
6183     # 13203: No EMMS instruction before return from function
6184     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6185     # 11030: Warning unknown option --as-needed
6186     # 10156: ignoring option '-export'; no argument required
6187     check_ldflags -wd10156,11030
6188     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6189     enable ebp_available
6190     # The test above does not test linking
6191     enabled lto && disable symver_asm_label
6192     if enabled x86_32; then
6193         icc_version=$($cc -dumpversion)
6194         test ${icc_version%%.*} -ge 11 &&
6195             check_cflags -falign-stack=maintain-16-byte ||
6196             disable aligned_stack
6197     fi
6198 elif enabled ccc; then
6199     # disable some annoying warnings
6200     add_cflags -msg_disable bitnotint
6201     add_cflags -msg_disable mixfuncvoid
6202     add_cflags -msg_disable nonstandcast
6203     add_cflags -msg_disable unsupieee
6204 elif enabled gcc; then
6205     check_optflags -fno-tree-vectorize
6206     check_cflags -Werror=format-security
6207     check_cflags -Werror=implicit-function-declaration
6208     check_cflags -Werror=missing-prototypes
6209     check_cflags -Werror=return-type
6210     check_cflags -Werror=vla
6211     check_cflags -Wformat
6212     check_cflags -fdiagnostics-color=auto
6213     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6214 elif enabled llvm_gcc; then
6215     check_cflags -mllvm -stack-alignment=16
6216 elif enabled clang; then
6217     check_cflags -mllvm -stack-alignment=16
6218     check_cflags -mstack-alignment=16
6219     check_cflags -Qunused-arguments
6220     check_cflags -Werror=implicit-function-declaration
6221     check_cflags -Werror=missing-prototypes
6222     check_cflags -Werror=return-type
6223 elif enabled cparser; then
6224     add_cflags -Wno-missing-variable-declarations
6225     add_cflags -Wno-empty-statement
6226 elif enabled armcc; then
6227     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6228     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6229     # 2523: use of inline assembly is deprecated
6230     add_cflags -W${armcc_opt},--diag_suppress=2523
6231     add_cflags -W${armcc_opt},--diag_suppress=1207
6232     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6233     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6234     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6235     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6236 elif enabled tms470; then
6237     add_cflags -pds=824 -pds=837
6238     disable inline_asm
6239 elif enabled pathscale; then
6240     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6241 elif enabled_any msvc icl; then
6242     enabled x86_32 && disable aligned_stack
6243     enabled_all x86_32 debug && add_cflags -Oy-
6244     enabled debug && add_ldflags -debug
6245     enable pragma_deprecated
6246     if enabled icl; then
6247         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6248         # (correctly) on icl 13.x.
6249         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6250             add_cflags -Qansi-alias
6251         # Some inline asm is not compilable in debug
6252         if enabled debug; then
6253             disable ebp_available
6254             disable ebx_available
6255         fi
6256     fi
6257     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6258     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6259     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6260     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6261     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6262     # MSVC 2013 and newer can handle it fine.
6263     # If this declspec fails, force including stdlib.h before the restrict redefinition
6264     # happens in config.h.
6265     if [ $_restrict != restrict ]; then
6266         check_cc <<EOF || add_cflags -FIstdlib.h
6267 __declspec($_restrict) void* foo(int);
6268 EOF
6269     fi
6270     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6271     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6272     # this flag should be re-checked on newer compiler releases and put under a
6273     # version check once its fixed
6274     check_cflags -d2SSAOptimizer-
6275 fi
6276
6277 for pfx in "" host_; do
6278     varname=${pfx%_}cc_type
6279     eval "type=\$$varname"
6280     if [ $type = "msvc" ]; then
6281         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6282 static inline int foo(int a) { return a; }
6283 EOF
6284     fi
6285 done
6286
6287 case $as_type in
6288     clang)
6289         add_asflags -Qunused-arguments
6290     ;;
6291 esac
6292
6293 case $ld_type in
6294     clang)
6295         check_ldflags -Qunused-arguments
6296     ;;
6297 esac
6298
6299 case $target_os in
6300     osf1)
6301         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6302     ;;
6303     plan9)
6304         add_cppflags -Dmain=plan9_main
6305     ;;
6306 esac
6307
6308 enable frame_thread_encoder
6309
6310 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6311
6312 check_deps $CONFIG_LIST       \
6313            $CONFIG_EXTRA      \
6314            $HAVE_LIST         \
6315            $ALL_COMPONENTS    \
6316
6317 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"
6318
6319
6320 if test $target_os = "haiku"; then
6321     disable memalign
6322     disable posix_memalign
6323 fi
6324
6325 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6326     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6327     enable dxva2_lib
6328
6329 ! enabled_any memalign posix_memalign aligned_malloc &&
6330     enabled simd_align_16 && enable memalign_hack
6331
6332 # add_dep lib dep
6333 # -> enable ${lib}_deps_${dep}
6334 # -> add $dep to ${lib}_deps only once
6335 add_dep() {
6336     lib=$1
6337     dep=$2
6338     enabled "${lib}_deps_${dep}" && return 0
6339     enable  "${lib}_deps_${dep}"
6340     prepend "${lib}_deps" $dep
6341 }
6342
6343 # merge deps lib components
6344 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6345 merge_deps() {
6346     lib=$1
6347     shift
6348     for comp in $*; do
6349         enabled $comp || continue
6350         eval "dep=\"\$${comp}_deps\""
6351         for d in $dep; do
6352             add_dep $lib $d
6353         done
6354     done
6355 }
6356
6357 merge_deps libavfilter $FILTER_LIST
6358
6359 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6360
6361 for thread in $THREADS_LIST; do
6362     if enabled $thread; then
6363         test -n "$thread_type" &&
6364             die "ERROR: Only one thread type must be selected." ||
6365             thread_type="$thread"
6366     fi
6367 done
6368
6369 enabled zlib && add_cppflags -DZLIB_CONST
6370
6371 # conditional library dependencies, in linking order
6372 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6373 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6374 enabled aresample_filter    && prepend avfilter_deps "swresample"
6375 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6376 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6377 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6378 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6379 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6380 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6381 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6382 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6383 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6384 enabled pan_filter          && prepend avfilter_deps "swresample"
6385 enabled pp_filter           && prepend avfilter_deps "postproc"
6386 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6387 enabled resample_filter && prepend avfilter_deps "avresample"
6388 enabled sab_filter          && prepend avfilter_deps "swscale"
6389 enabled scale_filter    && prepend avfilter_deps "swscale"
6390 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6391 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6392 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6393 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6394 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6395 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6396 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6397 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6398 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6399
6400 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6401
6402 enabled opus_decoder    && prepend avcodec_deps "swresample"
6403
6404 expand_deps(){
6405     lib_deps=${1}_deps
6406     eval "deps=\$$lib_deps"
6407     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6408     unique $lib_deps
6409 }
6410
6411 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6412 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6413
6414 map 'expand_deps $v' $LIBRARY_LIST
6415
6416 echo "install prefix            $prefix"
6417 echo "source path               $source_path"
6418 echo "C compiler                $cc"
6419 echo "C library                 $libc_type"
6420 if test "$host_cc" != "$cc"; then
6421     echo "host C compiler           $host_cc"
6422     echo "host C library            $host_libc_type"
6423 fi
6424 echo "ARCH                      $arch ($cpu)"
6425 if test "$build_suffix" != ""; then
6426     echo "build suffix              $build_suffix"
6427 fi
6428 if test "$progs_suffix" != ""; then
6429     echo "progs suffix              $progs_suffix"
6430 fi
6431 if test "$extra_version" != ""; then
6432     echo "version string suffix     $extra_version"
6433 fi
6434 echo "big-endian                ${bigendian-no}"
6435 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6436 if enabled x86; then
6437     echo "${yasmexe}                      ${yasm-no}"
6438     echo "MMX enabled               ${mmx-no}"
6439     echo "MMXEXT enabled            ${mmxext-no}"
6440     echo "3DNow! enabled            ${amd3dnow-no}"
6441     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6442     echo "SSE enabled               ${sse-no}"
6443     echo "SSSE3 enabled             ${ssse3-no}"
6444     echo "AESNI enabled             ${aesni-no}"
6445     echo "AVX enabled               ${avx-no}"
6446     echo "XOP enabled               ${xop-no}"
6447     echo "FMA3 enabled              ${fma3-no}"
6448     echo "FMA4 enabled              ${fma4-no}"
6449     echo "i686 features enabled     ${i686-no}"
6450     echo "CMOV is fast              ${fast_cmov-no}"
6451     echo "EBX available             ${ebx_available-no}"
6452     echo "EBP available             ${ebp_available-no}"
6453 fi
6454 if enabled aarch64; then
6455     echo "NEON enabled              ${neon-no}"
6456     echo "VFP enabled               ${vfp-no}"
6457 fi
6458 if enabled arm; then
6459     echo "ARMv5TE enabled           ${armv5te-no}"
6460     echo "ARMv6 enabled             ${armv6-no}"
6461     echo "ARMv6T2 enabled           ${armv6t2-no}"
6462     echo "VFP enabled               ${vfp-no}"
6463     echo "NEON enabled              ${neon-no}"
6464     echo "THUMB enabled             ${thumb-no}"
6465 fi
6466 if enabled mips; then
6467     echo "MIPS FPU enabled          ${mipsfpu-no}"
6468     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6469     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6470     echo "MIPS MSA enabled          ${msa-no}"
6471     echo "LOONGSON MMI enabled      ${mmi-no}"
6472 fi
6473 if enabled ppc; then
6474     echo "AltiVec enabled           ${altivec-no}"
6475     echo "VSX enabled               ${vsx-no}"
6476     echo "POWER8 enabled            ${power8-no}"
6477     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6478     echo "dcbzl available           ${dcbzl-no}"
6479 fi
6480 echo "debug symbols             ${debug-no}"
6481 echo "strip symbols             ${stripping-no}"
6482 echo "optimize for size         ${small-no}"
6483 echo "optimizations             ${optimizations-no}"
6484 echo "static                    ${static-no}"
6485 echo "shared                    ${shared-no}"
6486 echo "postprocessing support    ${postproc-no}"
6487 echo "new filter support        ${avfilter-no}"
6488 echo "network support           ${network-no}"
6489 echo "threading support         ${thread_type-no}"
6490 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6491 echo "SDL2 support              ${sdl2-no}"
6492 echo "opencl enabled            ${opencl-no}"
6493 echo "JNI support               ${jni-no}"
6494 echo "texi2html enabled         ${texi2html-no}"
6495 echo "perl enabled              ${perl-no}"
6496 echo "pod2man enabled           ${pod2man-no}"
6497 echo "makeinfo enabled          ${makeinfo-no}"
6498 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6499 test -n "$random_seed" &&
6500     echo "random seed               ${random_seed}"
6501 echo
6502
6503 echo "Enabled programs:"
6504 print_enabled '' $PROGRAM_LIST | print_in_columns
6505 echo
6506
6507 echo "External libraries:"
6508 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6509 echo
6510
6511 echo "External libraries providing hardware acceleration:"
6512 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6513 echo
6514
6515 echo "Libraries:"
6516 print_enabled '' $LIBRARY_LIST | print_in_columns
6517 echo
6518
6519 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6520     echo "Enabled ${type}s:"
6521     eval list=\$$(toupper $type)_LIST
6522     print_enabled '_*' $list | print_in_columns
6523     echo
6524 done
6525
6526 license="LGPL version 2.1 or later"
6527 if enabled nonfree; then
6528     license="nonfree and unredistributable"
6529 elif enabled gplv3; then
6530     license="GPL version 3 or later"
6531 elif enabled lgplv3; then
6532     license="LGPL version 3 or later"
6533 elif enabled gpl; then
6534     license="GPL version 2 or later"
6535 fi
6536
6537 echo "License: $license"
6538
6539 echo "Creating config.mak, config.h, and doc/config.texi..."
6540
6541 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6542
6543 enabled stripping || strip="echo skipping strip"
6544
6545 config_files="$TMPH config.mak doc/config.texi"
6546
6547 cat > config.mak <<EOF
6548 # Automatically generated by configure - do not modify!
6549 ifndef FFMPEG_CONFIG_MAK
6550 FFMPEG_CONFIG_MAK=1
6551 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6552 prefix=$prefix
6553 LIBDIR=\$(DESTDIR)$libdir
6554 SHLIBDIR=\$(DESTDIR)$shlibdir
6555 INCDIR=\$(DESTDIR)$incdir
6556 BINDIR=\$(DESTDIR)$bindir
6557 DATADIR=\$(DESTDIR)$datadir
6558 DOCDIR=\$(DESTDIR)$docdir
6559 MANDIR=\$(DESTDIR)$mandir
6560 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6561 INSTALL_NAME_DIR=$install_name_dir
6562 SRC_PATH=$source_path
6563 SRC_LINK=$source_link
6564 ifndef MAIN_MAKEFILE
6565 SRC_PATH:=\$(SRC_PATH:.%=..%)
6566 endif
6567 CC_IDENT=$cc_ident
6568 ARCH=$arch
6569 INTRINSICS=$intrinsics
6570 CC=$cc
6571 CXX=$cxx
6572 AS=$as
6573 OBJCC=$objcc
6574 LD=$ld
6575 DEPCC=$dep_cc
6576 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6577 DEPAS=$as
6578 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6579 YASM=$yasmexe
6580 DEPYASM=$yasmexe
6581 AR=$ar
6582 ARFLAGS=$arflags
6583 AR_O=$ar_o
6584 RANLIB=$ranlib
6585 STRIP=$strip
6586 CP=cp -p
6587 LN_S=$ln_s
6588 CPPFLAGS=$CPPFLAGS
6589 CFLAGS=$CFLAGS
6590 CXXFLAGS=$CXXFLAGS
6591 OBJCFLAGS=$OBJCFLAGS
6592 ASFLAGS=$ASFLAGS
6593 AS_C=$AS_C
6594 AS_O=$AS_O
6595 OBJCC_C=$OBJCC_C
6596 OBJCC_E=$OBJCC_E
6597 OBJCC_O=$OBJCC_O
6598 CC_C=$CC_C
6599 CC_E=$CC_E
6600 CC_O=$CC_O
6601 CXX_C=$CXX_C
6602 CXX_O=$CXX_O
6603 LD_O=$LD_O
6604 LD_LIB=$LD_LIB
6605 LD_PATH=$LD_PATH
6606 DLLTOOL=$dlltool
6607 WINDRES=$windres
6608 DEPWINDRES=$dep_cc
6609 DOXYGEN=$doxygen
6610 LDFLAGS=$LDFLAGS
6611 LDEXEFLAGS=$LDEXEFLAGS
6612 LDLIBFLAGS=$LDLIBFLAGS
6613 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6614 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6615 YASMFLAGS=$YASMFLAGS
6616 BUILDSUF=$build_suffix
6617 PROGSSUF=$progs_suffix
6618 FULLNAME=$FULLNAME
6619 LIBPREF=$LIBPREF
6620 LIBSUF=$LIBSUF
6621 LIBNAME=$LIBNAME
6622 SLIBPREF=$SLIBPREF
6623 SLIBSUF=$SLIBSUF
6624 EXESUF=$EXESUF
6625 EXTRA_VERSION=$extra_version
6626 CCDEP=$CCDEP
6627 CXXDEP=$CXXDEP
6628 CCDEP_FLAGS=$CCDEP_FLAGS
6629 ASDEP=$ASDEP
6630 ASDEP_FLAGS=$ASDEP_FLAGS
6631 CC_DEPFLAGS=$CC_DEPFLAGS
6632 AS_DEPFLAGS=$AS_DEPFLAGS
6633 HOSTCC=$host_cc
6634 HOSTLD=$host_ld
6635 HOSTCFLAGS=$host_cflags
6636 HOSTCPPFLAGS=$host_cppflags
6637 HOSTEXESUF=$HOSTEXESUF
6638 HOSTLDFLAGS=$host_ldflags
6639 HOSTLIBS=$host_libs
6640 DEPHOSTCC=$host_cc
6641 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6642 HOSTCCDEP=$HOSTCCDEP
6643 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6644 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6645 HOSTCC_C=$HOSTCC_C
6646 HOSTCC_O=$HOSTCC_O
6647 HOSTLD_O=$HOSTLD_O
6648 TARGET_EXEC=$target_exec $target_exec_args
6649 TARGET_PATH=$target_path
6650 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6651 CFLAGS-ffplay=${sdl2_cflags}
6652 ZLIB=$($ldflags_filter -lz)
6653 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6654 EXTRALIBS=$extralibs
6655 COMPAT_OBJS=$compat_objs
6656 EXEOBJS=$exeobjs
6657 INSTALL=$install
6658 LIBTARGET=${LIBTARGET}
6659 SLIBNAME=${SLIBNAME}
6660 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6661 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6662 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6663 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6664 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6665 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6666 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6667 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6668 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6669 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6670 NOREDZONE_FLAGS=$noredzone_flags
6671 EOF
6672
6673 get_version(){
6674     lcname=lib${1}
6675     name=$(toupper $lcname)
6676     file=$source_path/$lcname/version.h
6677     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6678     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6679     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6680     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6681     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6682     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6683 }
6684
6685 map 'get_version $v' $LIBRARY_LIST
6686
6687 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6688
6689 print_program_libs(){
6690     eval "program_libs=\$${1}_libs"
6691     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6692 }
6693
6694 map 'print_program_libs $v' $PROGRAM_LIST
6695
6696 cat > $TMPH <<EOF
6697 /* Automatically generated by configure - do not modify! */
6698 #ifndef FFMPEG_CONFIG_H
6699 #define FFMPEG_CONFIG_H
6700 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6701 #define FFMPEG_LICENSE "$(c_escape $license)"
6702 #define CONFIG_THIS_YEAR 2016
6703 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6704 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6705 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6706 #define av_restrict $_restrict
6707 #define EXTERN_PREFIX "${extern_prefix}"
6708 #define EXTERN_ASM ${extern_prefix}
6709 #define BUILDSUF "$build_suffix"
6710 #define SLIBSUF "$SLIBSUF"
6711 #define HAVE_MMX2 HAVE_MMXEXT
6712 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6713 EOF
6714
6715 test -n "$assert_level" &&
6716     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6717
6718 test -n "$malloc_prefix" &&
6719     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6720
6721 if enabled yasm; then
6722     append config_files $TMPASM
6723     printf '' >$TMPASM
6724 fi
6725
6726 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6727
6728
6729 mkdir -p doc
6730 mkdir -p tests
6731 mkdir -p tests/api
6732 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6733
6734 print_config ARCH_   "$config_files" $ARCH_LIST
6735 print_config HAVE_   "$config_files" $HAVE_LIST
6736 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6737                                      $CONFIG_EXTRA      \
6738                                      $ALL_COMPONENTS    \
6739
6740 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6741 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6742
6743 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6744 cp_if_changed $TMPH config.h
6745 touch .config
6746
6747 enabled yasm && cp_if_changed $TMPASM config.asm
6748
6749 cat > $TMPH <<EOF
6750 /* Generated by ffconf */
6751 #ifndef AVUTIL_AVCONFIG_H
6752 #define AVUTIL_AVCONFIG_H
6753 EOF
6754
6755 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6756
6757 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6758
6759 cp_if_changed $TMPH libavutil/avconfig.h
6760
6761 if test -n "$WARNINGS"; then
6762     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6763     enabled fatal_warnings && exit 1
6764 fi
6765
6766 # generate the lists of enabled components
6767 print_enabled_components(){
6768     file=$1
6769     struct_name=$2
6770     name=$3
6771     shift 3
6772     echo "static const $struct_name *$name[] = {" > $TMPH
6773     for c in $*; do
6774         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6775     done
6776     echo "    NULL };" >> $TMPH
6777     cp_if_changed $TMPH $file
6778 }
6779
6780 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6781 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6782
6783 # build pkg-config files
6784
6785 lib_version(){
6786     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6787 }
6788
6789 pkgconfig_generate(){
6790     name=$1
6791     shortname=${name#lib}${build_suffix}
6792     comment=$2
6793     version=$3
6794     libs=$4
6795     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6796     requires=${requires%, }
6797     enabled ${name#lib} || return 0
6798     mkdir -p $name
6799     cat <<EOF > $name/$name${build_suffix}.pc
6800 prefix=$prefix
6801 exec_prefix=\${prefix}
6802 libdir=$libdir
6803 includedir=$incdir
6804
6805 Name: $name
6806 Description: $comment
6807 Version: $version
6808 Requires: $(enabled shared || echo $requires)
6809 Requires.private: $(enabled shared && echo $requires)
6810 Conflicts:
6811 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6812 Libs.private: $(enabled shared && echo $libs)
6813 Cflags: -I\${includedir}
6814 EOF
6815
6816 mkdir -p doc/examples/pc-uninstalled
6817 includedir=${source_path}
6818 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6819     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6820 prefix=
6821 exec_prefix=
6822 libdir=\${pcfiledir}/../../../$name
6823 includedir=${includedir}
6824
6825 Name: $name
6826 Description: $comment
6827 Version: $version
6828 Requires: $requires
6829 Conflicts:
6830 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6831 Cflags: -I\${includedir}
6832 EOF
6833 }
6834
6835 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6836 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6837 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6838 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6839 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6840 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6841 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6842 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6843 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"