git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libebur128      enable libebur128 for EBU R128 measurement,
 226                            needed for loudnorm filter [no]
 227   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 228   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 229   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 230   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 231   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 232   --enable-libgme          enable Game Music Emu via libgme [no]
 233   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 234   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 235   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 236   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 237   --enable-libmodplug      enable ModPlug via libmodplug [no]
 238   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 239   --enable-libnut          enable NUT (de)muxing via libnut,
 240                            native (de)muxer exists [no]
 241   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 242   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 243   --enable-libopencv       enable video filtering via libopencv [no]
 244   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 245   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 246   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 247   --enable-libopus         enable Opus de/encoding via libopus [no]
 248   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 249   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 250   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 251   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 252   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 253   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 254   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 255   --enable-libsoxr         enable Include libsoxr resampling [no]
 256   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 257   --enable-libssh          enable SFTP protocol via libssh [no]
 258   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 259   --enable-libtheora       enable Theora encoding via libtheora [no]
 260   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 261   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 262   --enable-libvidstab      enable video stabilization using vid.stab [no]
 263   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 264   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 265                            native implementation exists [no]
 266   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 267   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 268   --enable-libwebp         enable WebP encoding via libwebp [no]
 269   --enable-libx264         enable H.264 encoding via x264 [no]
 270   --enable-libx265         enable HEVC encoding via x265 [no]
 271   --enable-libxavs         enable AVS encoding via xavs [no]
 272   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 273   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 274   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 275   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 276   --enable-libxvid         enable Xvid encoding via xvidcore,
 277                            native MPEG-4/Xvid encoder exists [no]
 278   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 279   --enable-libzmq          enable message passing via libzmq [no]
 280   --enable-libzvbi         enable teletext support via libzvbi [no]
 281   --disable-lzma           disable lzma [autodetect]
 282   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 283   --enable-mediacodec      enable Android MediaCodec support [no]
 284   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 285   --enable-openal          enable OpenAL 1.1 capture support [no]
 286   --enable-opencl          enable OpenCL code
 287   --enable-opengl          enable OpenGL rendering [no]
 288   --enable-openssl         enable openssl, needed for https support
 289                            if gnutls is not used [no]
 290   --disable-schannel       disable SChannel SSP, needed for TLS support on
 291                            Windows if openssl and gnutls are not used [autodetect]
 292   --disable-sdl2           disable sdl2 [autodetect]
 293   --disable-securetransport disable Secure Transport, needed for TLS support
 294                            on OSX if openssl and gnutls are not used [autodetect]
 295   --enable-x11grab         enable X11 grabbing (legacy) [no]
 296   --disable-xlib           disable xlib [autodetect]
 297   --disable-zlib           disable zlib [autodetect]
 298
 299   The following libraries provide various hardware acceleration features:
 300   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 301   --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
 302   --enable-cuvid           enable Nvidia CUVID support [autodetect]
 303   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 304   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 305   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 306   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 307   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 308   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 309   --enable-omx             enable OpenMAX IL code [no]
 310   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 311   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 312   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 313   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 314   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 315
 316 Toolchain options:
 317   --arch=ARCH              select architecture [$arch]
 318   --cpu=CPU                select the minimum required CPU (affects
 319                            instruction selection, may crash on older CPUs)
 320   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 321   --progs-suffix=SUFFIX    program name suffix []
 322   --enable-cross-compile   assume a cross-compiler is used
 323   --sysroot=PATH           root of cross-build tree
 324   --sysinclude=PATH        location of cross-build system headers
 325   --target-os=OS           compiler targets OS [$target_os]
 326   --target-exec=CMD        command to run executables on target
 327   --target-path=DIR        path to view of build directory on target
 328   --target-samples=DIR     path to samples directory on target
 329   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 330   --toolchain=NAME         set tool defaults according to NAME
 331   --nm=NM                  use nm tool NM [$nm_default]
 332   --ar=AR                  use archive tool AR [$ar_default]
 333   --as=AS                  use assembler AS [$as_default]
 334   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 335   --strip=STRIP            use strip tool STRIP [$strip_default]
 336   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 337   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 338   --cc=CC                  use C compiler CC [$cc_default]
 339   --cxx=CXX                use C compiler CXX [$cxx_default]
 340   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 341   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 342   --ld=LD                  use linker LD [$ld_default]
 343   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 344   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 345   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 346   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 347   --host-cc=HOSTCC         use host C compiler HOSTCC
 348   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 349   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 350   --host-ld=HOSTLD         use host linker HOSTLD
 351   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 352   --host-libs=HLIBS        use libs HLIBS when linking for host
 353   --host-os=OS             compiler host OS [$target_os]
 354   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 355   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 356   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 357   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 358   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 359   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 360   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 361   --extra-version=STRING   version string suffix []
 362   --optflags=OPTFLAGS      override optimization-related compiler flags
 363   --build-suffix=SUFFIX    library name suffix []
 364   --enable-pic             build position-independent code
 365   --enable-thumb           compile for Thumb instruction set
 366   --enable-lto             use link-time optimization
 367   --env="ENV=override"     override the environment variables
 368
 369 Advanced options (experts only):
 370   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 371   --custom-allocator=NAME  use a supported custom allocator
 372   --disable-symver         disable symbol versioning
 373   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 374   --disable-safe-bitstream-reader
 375                            disable buffer boundary checking in bitreaders
 376                            (faster, but may crash)
 377   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 378   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 379
 380 Optimization options (experts only):
 381   --disable-asm            disable all assembly optimizations
 382   --disable-altivec        disable AltiVec optimizations
 383   --disable-vsx            disable VSX optimizations
 384   --disable-power8         disable POWER8 optimizations
 385   --disable-amd3dnow       disable 3DNow! optimizations
 386   --disable-amd3dnowext    disable 3DNow! extended optimizations
 387   --disable-mmx            disable MMX optimizations
 388   --disable-mmxext         disable MMXEXT optimizations
 389   --disable-sse            disable SSE optimizations
 390   --disable-sse2           disable SSE2 optimizations
 391   --disable-sse3           disable SSE3 optimizations
 392   --disable-ssse3          disable SSSE3 optimizations
 393   --disable-sse4           disable SSE4 optimizations
 394   --disable-sse42          disable SSE4.2 optimizations
 395   --disable-avx            disable AVX optimizations
 396   --disable-xop            disable XOP optimizations
 397   --disable-fma3           disable FMA3 optimizations
 398   --disable-fma4           disable FMA4 optimizations
 399   --disable-avx2           disable AVX2 optimizations
 400   --disable-aesni          disable AESNI optimizations
 401   --disable-armv5te        disable armv5te optimizations
 402   --disable-armv6          disable armv6 optimizations
 403   --disable-armv6t2        disable armv6t2 optimizations
 404   --disable-vfp            disable VFP optimizations
 405   --disable-neon           disable NEON optimizations
 406   --disable-inline-asm     disable use of inline assembly
 407   --disable-yasm           disable use of nasm/yasm assembly
 408   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 409   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 410   --disable-msa            disable MSA optimizations
 411   --disable-mipsfpu        disable floating point MIPS optimizations
 412   --disable-mmi            disable Loongson SIMD optimizations
 413   --disable-fast-unaligned consider unaligned accesses slow
 414
 415 Developer options (useful when working on FFmpeg itself):
 416   --disable-debug          disable debugging symbols
 417   --enable-debug=LEVEL     set the debug level [$debuglevel]
 418   --disable-optimizations  disable compiler optimizations
 419   --enable-extra-warnings  enable more compiler warnings
 420   --disable-stripping      disable stripping of executables and shared libraries
 421   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 422                            2 causes a slowdown at runtime.
 423   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 424   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 425                            leaks and errors, using the specified valgrind binary.
 426                            Cannot be combined with --target-exec
 427   --enable-ftrapv          Trap arithmetic overflows
 428   --samples=PATH           location of test samples for FATE, if not set use
 429                            \$FATE_SAMPLES at make invocation time.
 430   --enable-neon-clobber-test check NEON registers for clobbering (should be
 431                            used only for debugging purposes)
 432   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 433                            should be used only for debugging purposes)
 434   --enable-random          randomly enable/disable components
 435   --disable-random
 436   --enable-random=LIST     randomly enable/disable specific components or
 437   --disable-random=LIST    component groups. LIST is a comma-separated list
 438                            of NAME[:PROB] entries where NAME is a component
 439                            (group) and PROB the probability associated with
 440                            NAME (default 0.5).
 441   --random-seed=VALUE      seed value for --enable/disable-random
 442   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 443                            (only applies to --disable-optimizations builds)
 444
 445 NOTE: Object files are built at the place where configure is launched.
 446 EOF
 447   exit 0
 448 }
 449
 450 quotes='""'
 451 if test -t 1 && which tput >/dev/null 2>&1; then
 452     ncolors=$(tput colors)
 453     if test -n "$ncolors" && test $ncolors -ge 8; then
 454         bold_color=$(tput bold)
 455         warn_color=$(tput setaf 3)
 456         error_color=$(tput setaf 1)
 457         reset_color=$(tput sgr0)
 458     fi
 459     # 72 used instead of 80 since that's the default of pr
 460     ncols=$(tput cols)
 461 fi
 462 : ${ncols:=72}
 463
 464 log(){
 465     echo "$@" >> $logfile
 466 }
 467
 468 log_file(){
 469     log BEGIN $1
 470     pr -n -t $1 >> $logfile
 471     log END $1
 472 }
 473
 474 warn(){
 475     log "WARNING: $*"
 476     WARNINGS="${WARNINGS}WARNING: $*\n"
 477 }
 478
 479 die(){
 480     log "$@"
 481     echo "$error_color$bold_color$@$reset_color"
 482     cat <<EOF
 483
 484 If you think configure made a mistake, make sure you are using the latest
 485 version from Git.  If the latest version fails, report the problem to the
 486 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 487 EOF
 488     if disabled logging; then
 489         cat <<EOF
 490 Rerun configure with logging enabled (do not use --disable-logging), and
 491 include the log this produces with your report.
 492 EOF
 493     else
 494         cat <<EOF
 495 Include the log file "$logfile" produced by configure as this will help
 496 solve the problem.
 497 EOF
 498     fi
 499     exit 1
 500 }
 501
 502 # Avoid locale weirdness, besides we really just want to translate ASCII.
 503 toupper(){
 504     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 505 }
 506
 507 tolower(){
 508     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 509 }
 510
 511 c_escape(){
 512     echo "$*" | sed 's/["\\]/\\\0/g'
 513 }
 514
 515 sh_quote(){
 516     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 517     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 518     echo "$v"
 519 }
 520
 521 cleanws(){
 522     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 523 }
 524
 525 filter(){
 526     pat=$1
 527     shift
 528     for v; do
 529         eval "case $v in $pat) echo $v ;; esac"
 530     done
 531 }
 532
 533 filter_out(){
 534     pat=$1
 535     shift
 536     for v; do
 537         eval "case $v in $pat) ;; *) echo $v ;; esac"
 538     done
 539 }
 540
 541 map(){
 542     m=$1
 543     shift
 544     for v; do eval $m; done
 545 }
 546
 547 add_suffix(){
 548     suffix=$1
 549     shift
 550     for v; do echo ${v}${suffix}; done
 551 }
 552
 553 set_all(){
 554     value=$1
 555     shift
 556     for var in $*; do
 557         eval $var=$value
 558     done
 559 }
 560
 561 set_weak(){
 562     value=$1
 563     shift
 564     for var; do
 565         eval : \${$var:=$value}
 566     done
 567 }
 568
 569 sanitize_var_name(){
 570     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 571 }
 572
 573 set_safe(){
 574     var=$1
 575     shift
 576     eval $(sanitize_var_name "$var")='$*'
 577 }
 578
 579 get_safe(){
 580     eval echo \$$(sanitize_var_name "$1")
 581 }
 582
 583 pushvar(){
 584     for pvar in $*; do
 585         eval level=\${${pvar}_level:=0}
 586         eval ${pvar}_${level}="\$$pvar"
 587         eval ${pvar}_level=$(($level+1))
 588     done
 589 }
 590
 591 popvar(){
 592     for pvar in $*; do
 593         eval level=\${${pvar}_level:-0}
 594         test $level = 0 && continue
 595         eval level=$(($level-1))
 596         eval $pvar="\${${pvar}_${level}}"
 597         eval ${pvar}_level=$level
 598         eval unset ${pvar}_${level}
 599     done
 600 }
 601
 602 enable(){
 603     set_all yes $*
 604 }
 605
 606 disable(){
 607     set_all no $*
 608 }
 609
 610 enable_weak(){
 611     set_weak yes $*
 612 }
 613
 614 disable_weak(){
 615     set_weak no $*
 616 }
 617
 618 enable_safe(){
 619     for var; do
 620         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 621     done
 622 }
 623
 624 disable_safe(){
 625     for var; do
 626         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 627     done
 628 }
 629
 630 do_enable_deep(){
 631     for var; do
 632         enabled $var && continue
 633         eval sel="\$${var}_select"
 634         eval sgs="\$${var}_suggest"
 635         pushvar var sgs
 636         enable_deep $sel
 637         popvar sgs
 638         enable_deep_weak $sgs
 639         popvar var
 640     done
 641 }
 642
 643 enable_deep(){
 644     do_enable_deep $*
 645     enable $*
 646 }
 647
 648 enable_deep_weak(){
 649     for var; do
 650         disabled $var && continue
 651         pushvar var
 652         do_enable_deep $var
 653         popvar var
 654         enable_weak $var
 655     done
 656 }
 657
 658 enabled(){
 659     test "${1#!}" = "$1" && op='=' || op=!=
 660     eval test "x\$${1#!}" $op "xyes"
 661 }
 662
 663 disabled(){
 664     test "${1#!}" = "$1" && op='=' || op=!=
 665     eval test "x\$${1#!}" $op "xno"
 666 }
 667
 668 enabled_all(){
 669     for opt; do
 670         enabled $opt || return 1
 671     done
 672 }
 673
 674 disabled_all(){
 675     for opt; do
 676         disabled $opt || return 1
 677     done
 678 }
 679
 680 enabled_any(){
 681     for opt; do
 682         enabled $opt && return 0
 683     done
 684 }
 685
 686 disabled_any(){
 687     for opt; do
 688         disabled $opt && return 0
 689     done
 690     return 1
 691 }
 692
 693 set_default(){
 694     for opt; do
 695         eval : \${$opt:=\$${opt}_default}
 696     done
 697 }
 698
 699 is_in(){
 700     value=$1
 701     shift
 702     for var in $*; do
 703         [ $var = $value ] && return 0
 704     done
 705     return 1
 706 }
 707
 708 do_check_deps(){
 709     for cfg; do
 710         cfg="${cfg#!}"
 711         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 712         disabled ${cfg}_checking && continue
 713         enable ${cfg}_checking
 714         append allopts $cfg
 715
 716         eval dep_all="\$${cfg}_deps"
 717         eval dep_any="\$${cfg}_deps_any"
 718         eval dep_sel="\$${cfg}_select"
 719         eval dep_sgs="\$${cfg}_suggest"
 720         eval dep_ifa="\$${cfg}_if"
 721         eval dep_ifn="\$${cfg}_if_any"
 722
 723         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 724         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 725         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 726
 727         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 728         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 729         enabled_all  $dep_all || disable $cfg
 730         enabled_any  $dep_any || disable $cfg
 731         disabled_any $dep_sel && disable $cfg
 732
 733         if enabled $cfg; then
 734             enable_deep $dep_sel
 735             enable_deep_weak $dep_sgs
 736         fi
 737
 738         disable ${cfg}_checking
 739     done
 740 }
 741
 742 check_deps(){
 743     unset allopts
 744
 745     do_check_deps "$@"
 746
 747     for cfg in $allopts; do
 748         enabled $cfg || continue
 749         eval dep_extralibs="\$${cfg}_extralibs"
 750         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 751     done
 752 }
 753
 754 print_config(){
 755     pfx=$1
 756     files=$2
 757     shift 2
 758     map 'eval echo "$v \${$v:-no}"' "$@" |
 759     awk "BEGIN { split(\"$files\", files) }
 760         {
 761             c = \"$pfx\" toupper(\$1);
 762             v = \$2;
 763             sub(/yes/, 1, v);
 764             sub(/no/,  0, v);
 765             for (f in files) {
 766                 file = files[f];
 767                 if (file ~ /\\.h\$/) {
 768                     printf(\"#define %s %d\\n\", c, v) >>file;
 769                 } else if (file ~ /\\.asm\$/) {
 770                     printf(\"%%define %s %d\\n\", c, v) >>file;
 771                 } else if (file ~ /\\.mak\$/) {
 772                     n = -v ? \"\" : \"!\";
 773                     printf(\"%s%s=yes\\n\", n, c) >>file;
 774                 } else if (file ~ /\\.texi\$/) {
 775                     pre = -v ? \"\" : \"@c \";
 776                     yesno = \$2;
 777                     c2 = tolower(c);
 778                     gsub(/_/, \"-\", c2);
 779                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 780                 }
 781             }
 782         }"
 783 }
 784
 785 print_enabled(){
 786     suf=$1
 787     shift
 788     for v; do
 789         enabled $v && printf "%s\n" ${v%$suf}
 790     done
 791 }
 792
 793 append(){
 794     var=$1
 795     shift
 796     eval "$var=\"\$$var $*\""
 797 }
 798
 799 prepend(){
 800     var=$1
 801     shift
 802     eval "$var=\"$* \$$var\""
 803 }
 804
 805 unique(){
 806     var=$1
 807     uniq_list=""
 808     for tok in $(eval echo \$$var); do
 809         uniq_list="$(filter_out $tok $uniq_list) $tok"
 810     done
 811     eval "$var=\"${uniq_list}\""
 812 }
 813
 814 add_cppflags(){
 815     append CPPFLAGS "$@"
 816 }
 817
 818 add_cflags(){
 819     append CFLAGS $($cflags_filter "$@")
 820 }
 821
 822 add_cxxflags(){
 823     append CXXFLAGS $($cflags_filter "$@")
 824 }
 825
 826 add_asflags(){
 827     append ASFLAGS $($asflags_filter "$@")
 828 }
 829
 830 add_objcflags(){
 831     append OBJCFLAGS $($objcflags_filter "$@")
 832 }
 833
 834 add_ldflags(){
 835     append LDFLAGS $($ldflags_filter "$@")
 836 }
 837
 838 add_ldexeflags(){
 839     append LDEXEFLAGS $($ldflags_filter "$@")
 840 }
 841
 842 add_ldlibflags(){
 843     append LDLIBFLAGS $($ldflags_filter "$@")
 844 }
 845
 846 add_stripflags(){
 847     append ASMSTRIPFLAGS "$@"
 848 }
 849
 850 add_extralibs(){
 851     prepend extralibs $($ldflags_filter "$@")
 852 }
 853
 854 add_host_cppflags(){
 855     append host_cppflags "$@"
 856 }
 857
 858 add_host_cflags(){
 859     append host_cflags $($host_cflags_filter "$@")
 860 }
 861
 862 add_host_ldflags(){
 863     append host_ldflags $($host_ldflags_filter "$@")
 864 }
 865
 866 add_compat(){
 867     append compat_objs $1
 868     shift
 869     map 'add_cppflags -D$v' "$@"
 870 }
 871
 872 check_cmd(){
 873     log "$@"
 874     "$@" >> $logfile 2>&1
 875 }
 876
 877 check_stat(){
 878     log check_stat "$@"
 879     stat "$1" >> $logfile 2>&1
 880 }
 881
 882 cc_o(){
 883     eval printf '%s\\n' $CC_O
 884 }
 885
 886 cc_e(){
 887     eval printf '%s\\n' $CC_E
 888 }
 889
 890 check_cc(){
 891     log check_cc "$@"
 892     cat > $TMPC
 893     log_file $TMPC
 894     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 895 }
 896
 897 check_cxx(){
 898     log check_cxx "$@"
 899     cat > $TMPCPP
 900     log_file $TMPCPP
 901     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 902 }
 903
 904 check_objcc(){
 905     log check_objcc "$@"
 906     cat > $TMPM
 907     log_file $TMPM
 908     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 909 }
 910
 911 check_cpp(){
 912     log check_cpp "$@"
 913     cat > $TMPC
 914     log_file $TMPC
 915     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 916 }
 917
 918 as_o(){
 919     eval printf '%s\\n' $AS_O
 920 }
 921
 922 check_as(){
 923     log check_as "$@"
 924     cat > $TMPS
 925     log_file $TMPS
 926     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 927 }
 928
 929 check_inline_asm(){
 930     log check_inline_asm "$@"
 931     name="$1"
 932     code="$2"
 933     shift 2
 934     disable $name
 935     check_cc "$@" <<EOF && enable $name
 936 void foo(void){ __asm__ volatile($code); }
 937 EOF
 938 }
 939
 940 check_inline_asm_flags(){
 941     log check_inline_asm_flags "$@"
 942     name="$1"
 943     code="$2"
 944     flags=''
 945     shift 2
 946     while [ "$1" != "" ]; do
 947       append flags $1
 948       shift
 949     done;
 950     disable $name
 951     cat > $TMPC <<EOF
 952 void foo(void){ __asm__ volatile($code); }
 953 EOF
 954     log_file $TMPC
 955     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 956     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 957 }
 958
 959 check_insn(){
 960     log check_insn "$@"
 961     check_inline_asm ${1}_inline "\"$2\""
 962     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 963 }
 964
 965 check_yasm(){
 966     log check_yasm "$@"
 967     echo "$1" > $TMPS
 968     log_file $TMPS
 969     shift 1
 970     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 971 }
 972
 973 ld_o(){
 974     eval printf '%s\\n' $LD_O
 975 }
 976
 977 check_ld(){
 978     log check_ld "$@"
 979     type=$1
 980     shift 1
 981     flags=$(filter_out '-l*|*.so' $@)
 982     libs=$(filter '-l*|*.so' $@)
 983     check_$type $($cflags_filter $flags) || return
 984     flags=$($ldflags_filter $flags)
 985     libs=$($ldflags_filter $libs)
 986     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 987 }
 988
 989 print_include(){
 990     hdr=$1
 991     test "${hdr%.h}" = "${hdr}" &&
 992         echo "#include $hdr"    ||
 993         echo "#include <$hdr>"
 994 }
 995
 996 check_code(){
 997     log check_code "$@"
 998     check=$1
 999     headers=$2
1000     code=$3
1001     shift 3
1002     {
1003         for hdr in $headers; do
1004             print_include $hdr
1005         done
1006         echo "int main(void) { $code; return 0; }"
1007     } | check_$check "$@"
1008 }
1009
1010 check_cppflags(){
1011     log check_cppflags "$@"
1012     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1013 int x;
1014 EOF
1015 }
1016
1017 test_cflags(){
1018     log test_cflags "$@"
1019     set -- $($cflags_filter "$@")
1020     check_cc "$@" <<EOF
1021 int x;
1022 EOF
1023 }
1024
1025 check_cflags(){
1026     log check_cflags "$@"
1027     test_cflags "$@" && add_cflags "$@"
1028 }
1029
1030 check_cxxflags(){
1031     log check_cxxflags "$@"
1032     set -- $($cflags_filter "$@")
1033     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1034 int x;
1035 EOF
1036 }
1037
1038 test_objcflags(){
1039     log test_cflags "$@"
1040     set -- $($cflags_filter "$@")
1041     check_objcc "$@" <<EOF
1042 int x;
1043 EOF
1044 }
1045
1046 check_objcflags(){
1047     log check_cflags "$@"
1048     test_objcflags "$@" && add_objcflags "$@"
1049 }
1050
1051 test_ldflags(){
1052     log test_ldflags "$@"
1053     check_ld "cc" "$@" <<EOF
1054 int main(void){ return 0; }
1055 EOF
1056 }
1057
1058 check_ldflags(){
1059     log check_ldflags "$@"
1060     test_ldflags "$@" && add_ldflags "$@"
1061 }
1062
1063 test_stripflags(){
1064     log test_stripflags "$@"
1065     # call check_cc to get a fresh TMPO
1066     check_cc <<EOF
1067 int main(void) { return 0; }
1068 EOF
1069     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1070 }
1071
1072 check_stripflags(){
1073     log check_stripflags "$@"
1074     test_stripflags "$@" && add_stripflags "$@"
1075 }
1076
1077 check_header(){
1078     log check_header "$@"
1079     header=$1
1080     shift
1081     disable_safe $header
1082     check_cpp "$@" <<EOF && enable_safe $header
1083 #include <$header>
1084 int x;
1085 EOF
1086 }
1087
1088 check_header_objcc(){
1089     log check_header_objcc "$@"
1090     rm -f -- "$TMPO"
1091     header=$1
1092     shift
1093     disable_safe $header
1094     {
1095        echo "#include <$header>"
1096        echo "int main(void) { return 0; }"
1097     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1098 }
1099
1100 check_func(){
1101     log check_func "$@"
1102     func=$1
1103     shift
1104     disable $func
1105     check_ld "cc" "$@" <<EOF && enable $func
1106 extern int $func();
1107 int main(void){ $func(); }
1108 EOF
1109 }
1110
1111 check_complexfunc(){
1112     log check_complexfunc "$@"
1113     func=$1
1114     narg=$2
1115     shift 2
1116     test $narg = 2 && args="f, g" || args="f * I"
1117     disable $func
1118     check_ld "cc" "$@" <<EOF && enable $func
1119 #include <complex.h>
1120 #include <math.h>
1121 float foo(complex float f, complex float g) { return $func($args); }
1122 int main(void){ return (int) foo; }
1123 EOF
1124 }
1125
1126 check_mathfunc(){
1127     log check_mathfunc "$@"
1128     func=$1
1129     narg=$2
1130     shift 2
1131     test $narg = 2 && args="f, g" || args="f"
1132     disable $func
1133     check_ld "cc" "$@" <<EOF && enable $func
1134 #include <math.h>
1135 float foo(float f, float g) { return $func($args); }
1136 int main(void){ return (int) foo; }
1137 EOF
1138 }
1139
1140 check_func_headers(){
1141     log check_func_headers "$@"
1142     headers=$1
1143     funcs=$2
1144     shift 2
1145     {
1146         for hdr in $headers; do
1147             print_include $hdr
1148         done
1149         for func in $funcs; do
1150             echo "long check_$func(void) { return (long) $func; }"
1151         done
1152         echo "int main(void) { return 0; }"
1153     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1154 }
1155
1156 check_class_headers_cpp(){
1157     log check_class_headers_cpp "$@"
1158     headers=$1
1159     classes=$2
1160     shift 2
1161     {
1162         for hdr in $headers; do
1163             echo "#include <$hdr>"
1164         done
1165         echo "int main(void) { "
1166         i=1
1167         for class in $classes; do
1168             echo "$class obj$i;"
1169             i=$(expr $i + 1)
1170         done
1171         echo "return 0; }"
1172     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1173 }
1174
1175 check_cpp_condition(){
1176     log check_cpp_condition "$@"
1177     header=$1
1178     condition=$2
1179     shift 2
1180     check_cpp "$@" <<EOF
1181 #include <$header>
1182 #if !($condition)
1183 #error "unsatisfied condition: $condition"
1184 #endif
1185 EOF
1186 }
1187
1188 check_lib(){
1189     log check_lib "$@"
1190     header="$1"
1191     func="$2"
1192     shift 2
1193     check_header $header && check_func $func "$@" && add_extralibs "$@"
1194 }
1195
1196 check_lib2(){
1197     log check_lib2 "$@"
1198     headers="$1"
1199     funcs="$2"
1200     shift 2
1201     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1202 }
1203
1204 check_lib_cpp(){
1205     log check_lib_cpp "$@"
1206     headers="$1"
1207     classes="$2"
1208     shift 2
1209     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1210 }
1211
1212 check_pkg_config(){
1213     log check_pkg_config "$@"
1214     pkgandversion="$1"
1215     pkg="${1%% *}"
1216     headers="$2"
1217     funcs="$3"
1218     shift 3
1219     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1220     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1221     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1222     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1223         set_safe "${pkg}_cflags" $pkg_cflags   &&
1224         set_safe "${pkg}_libs"   $pkg_libs
1225 }
1226
1227 check_exec(){
1228     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1229 }
1230
1231 check_exec_crash(){
1232     code=$(cat)
1233
1234     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1235     # are safe but may not be available everywhere.  Thus we use
1236     # raise(SIGTERM) instead.  The check is run in a subshell so we
1237     # can redirect the "Terminated" message from the shell.  SIGBUS
1238     # is not defined by standard C so it is used conditionally.
1239
1240     (check_exec "$@") >> $logfile 2>&1 <<EOF
1241 #include <signal.h>
1242 static void sighandler(int sig){
1243     raise(SIGTERM);
1244 }
1245 int foo(void){
1246     $code
1247 }
1248 int (*func_ptr)(void) = foo;
1249 int main(void){
1250     signal(SIGILL, sighandler);
1251     signal(SIGFPE, sighandler);
1252     signal(SIGSEGV, sighandler);
1253 #ifdef SIGBUS
1254     signal(SIGBUS, sighandler);
1255 #endif
1256     return func_ptr();
1257 }
1258 EOF
1259 }
1260
1261 check_type(){
1262     log check_type "$@"
1263     headers=$1
1264     type=$2
1265     shift 2
1266     disable_safe "$type"
1267     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1268 }
1269
1270 check_struct(){
1271     log check_struct "$@"
1272     headers=$1
1273     struct=$2
1274     member=$3
1275     shift 3
1276     disable_safe "${struct}_${member}"
1277     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1278         enable_safe "${struct}_${member}"
1279 }
1280
1281 check_builtin(){
1282     log check_builtin "$@"
1283     name=$1
1284     headers=$2
1285     builtin=$3
1286     shift 3
1287     disable "$name"
1288     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1289 }
1290
1291 check_compile_assert(){
1292     log check_compile_assert "$@"
1293     name=$1
1294     headers=$2
1295     condition=$3
1296     shift 3
1297     disable "$name"
1298     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1299 }
1300
1301 require(){
1302     name="$1"
1303     header="$2"
1304     func="$3"
1305     shift 3
1306     check_lib $header $func "$@" || die "ERROR: $name not found"
1307 }
1308
1309 require2(){
1310     name="$1"
1311     headers="$2"
1312     func="$3"
1313     shift 3
1314     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1315 }
1316
1317 require_cpp(){
1318     name="$1"
1319     headers="$2"
1320     classes="$3"
1321     shift 3
1322     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1323 }
1324
1325 use_pkg_config(){
1326     pkg="$1"
1327     check_pkg_config "$@" || return 1
1328     add_cflags    $(get_safe "${pkg}_cflags")
1329     add_extralibs $(get_safe "${pkg}_libs")
1330 }
1331
1332 require_pkg_config(){
1333     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1334 }
1335
1336 require_libfreetype(){
1337     log require_libfreetype "$@"
1338     pkg="freetype2"
1339     check_cmd $pkg_config --exists --print-errors $pkg \
1340       || die "ERROR: $pkg not found"
1341     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1342     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1343     {
1344         echo "#include <ft2build.h>"
1345         echo "#include FT_FREETYPE_H"
1346         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1347         echo "int main(void) { return 0; }"
1348     } | check_ld "cc" $pkg_cflags $pkg_libs \
1349       && set_safe "${pkg}_cflags" $pkg_cflags \
1350       && set_safe "${pkg}_libs"   $pkg_libs \
1351       || die "ERROR: $pkg not found"
1352     add_cflags    $(get_safe "${pkg}_cflags")
1353     add_extralibs $(get_safe "${pkg}_libs")
1354 }
1355
1356 hostcc_e(){
1357     eval printf '%s\\n' $HOSTCC_E
1358 }
1359
1360 hostcc_o(){
1361     eval printf '%s\\n' $HOSTCC_O
1362 }
1363
1364 check_host_cc(){
1365     log check_host_cc "$@"
1366     cat > $TMPC
1367     log_file $TMPC
1368     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1369 }
1370
1371 check_host_cpp(){
1372     log check_host_cpp "$@"
1373     cat > $TMPC
1374     log_file $TMPC
1375     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1376 }
1377
1378 check_host_cppflags(){
1379     log check_host_cppflags "$@"
1380     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1381 int x;
1382 EOF
1383 }
1384
1385 check_host_cflags(){
1386     log check_host_cflags "$@"
1387     set -- $($host_cflags_filter "$@")
1388     check_host_cc "$@" <<EOF && append host_cflags "$@"
1389 int x;
1390 EOF
1391 }
1392
1393 check_host_cpp_condition(){
1394     log check_host_cpp_condition "$@"
1395     header=$1
1396     condition=$2
1397     shift 2
1398     check_host_cpp "$@" <<EOF
1399 #include <$header>
1400 #if !($condition)
1401 #error "unsatisfied condition: $condition"
1402 #endif
1403 EOF
1404 }
1405
1406 cp_if_changed(){
1407     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1408     mkdir -p "$(dirname $2)"
1409     $cp_f "$1" "$2"
1410 }
1411
1412 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1413 # system-dependent things.
1414
1415 AVCODEC_COMPONENTS="
1416     bsfs
1417     decoders
1418     encoders
1419     hwaccels
1420     parsers
1421 "
1422
1423 AVDEVICE_COMPONENTS="
1424     indevs
1425     outdevs
1426 "
1427 AVFILTER_COMPONENTS="
1428     filters
1429 "
1430 AVFORMAT_COMPONENTS="
1431     demuxers
1432     muxers
1433     protocols
1434 "
1435
1436 AVRESAMPLE_COMPONENTS=""
1437 AVUTIL_COMPONENTS=""
1438
1439 COMPONENT_LIST="
1440     $AVCODEC_COMPONENTS
1441     $AVDEVICE_COMPONENTS
1442     $AVFILTER_COMPONENTS
1443     $AVFORMAT_COMPONENTS
1444     $AVRESAMPLE_COMPONENTS
1445     $AVUTIL_COMPONENTS
1446 "
1447
1448 EXAMPLE_LIST="
1449     avio_dir_cmd_example
1450     avio_reading_example
1451     decoding_encoding_example
1452     demuxing_decoding_example
1453     extract_mvs_example
1454     filter_audio_example
1455     filtering_audio_example
1456     filtering_video_example
1457     http_multiclient_example
1458     metadata_example
1459     muxing_example
1460     qsvdec_example
1461     remuxing_example
1462     resampling_audio_example
1463     scaling_video_example
1464     transcode_aac_example
1465     transcoding_example
1466 "
1467
1468 EXTERNAL_LIBRARY_LIST="
1469     avisynth
1470     bzlib
1471     chromaprint
1472     crystalhd
1473     decklink
1474     frei0r
1475     gcrypt
1476     gmp
1477     gnutls
1478     iconv
1479     jni
1480     ladspa
1481     libass
1482     libbluray
1483     libbs2b
1484     libcaca
1485     libcdio
1486     libcelt
1487     libdc1394
1488     libebur128
1489     libfdk_aac
1490     libflite
1491     libfontconfig
1492     libfreetype
1493     libfribidi
1494     libgme
1495     libgsm
1496     libiec61883
1497     libilbc
1498     libkvazaar
1499     libmodplug
1500     libmp3lame
1501     libnut
1502     libopencore_amrnb
1503     libopencore_amrwb
1504     libopencv
1505     libopenh264
1506     libopenjpeg
1507     libopenmpt
1508     libopus
1509     libpulse
1510     librtmp
1511     librubberband
1512     libschroedinger
1513     libshine
1514     libsmbclient
1515     libsnappy
1516     libsoxr
1517     libspeex
1518     libssh
1519     libtesseract
1520     libtheora
1521     libtwolame
1522     libv4l2
1523     libvidstab
1524     libvo_amrwbenc
1525     libvorbis
1526     libvpx
1527     libwavpack
1528     libwebp
1529     libx264
1530     libx265
1531     libxavs
1532     libxcb
1533     libxcb_shm
1534     libxcb_shape
1535     libxcb_xfixes
1536     libxvid
1537     libzimg
1538     libzmq
1539     libzvbi
1540     lzma
1541     mediacodec
1542     netcdf
1543     openal
1544     opencl
1545     opengl
1546     openssl
1547     schannel
1548     sdl
1549     sdl2
1550     securetransport
1551     videotoolbox
1552     x11grab
1553     xlib
1554     zlib
1555 "
1556
1557 HWACCEL_LIBRARY_LIST="
1558     audiotoolbox
1559     cuda
1560     cuvid
1561     d3d11va
1562     dxva2
1563     libmfx
1564     libnpp
1565     mmal
1566     nvenc
1567     omx
1568     vaapi
1569     vda
1570     vdpau
1571     videotoolbox_hwaccel
1572     xvmc
1573 "
1574
1575 DOCUMENT_LIST="
1576     doc
1577     htmlpages
1578     manpages
1579     podpages
1580     txtpages
1581 "
1582
1583 FEATURE_LIST="
1584     ftrapv
1585     gray
1586     hardcoded_tables
1587     omx_rpi
1588     runtime_cpudetect
1589     safe_bitstream_reader
1590     shared
1591     small
1592     static
1593     swscale_alpha
1594 "
1595
1596 LIBRARY_LIST="
1597     avcodec
1598     avdevice
1599     avfilter
1600     avformat
1601     avresample
1602     avutil
1603     postproc
1604     swresample
1605     swscale
1606 "
1607
1608 LICENSE_LIST="
1609     gpl
1610     nonfree
1611     version3
1612 "
1613
1614 PROGRAM_LIST="
1615     ffplay
1616     ffprobe
1617     ffserver
1618     ffmpeg
1619 "
1620
1621 SUBSYSTEM_LIST="
1622     dct
1623     dwt
1624     error_resilience
1625     faan
1626     fast_unaligned
1627     fft
1628     lsp
1629     lzo
1630     mdct
1631     pixelutils
1632     network
1633     rdft
1634 "
1635
1636 CONFIG_LIST="
1637     $COMPONENT_LIST
1638     $DOCUMENT_LIST
1639     $EXAMPLE_LIST
1640     $EXTERNAL_LIBRARY_LIST
1641     $HWACCEL_LIBRARY_LIST
1642     $FEATURE_LIST
1643     $LICENSE_LIST
1644     $LIBRARY_LIST
1645     $PROGRAM_LIST
1646     $SUBSYSTEM_LIST
1647     fontconfig
1648     incompatible_libav_abi
1649     memalign_hack
1650     memory_poisoning
1651     neon_clobber_test
1652     pic
1653     pod2man
1654     raise_major
1655     thumb
1656     valgrind_backtrace
1657     xmm_clobber_test
1658 "
1659
1660 THREADS_LIST="
1661     pthreads
1662     os2threads
1663     w32threads
1664 "
1665
1666 ATOMICS_LIST="
1667     atomics_gcc
1668     atomics_suncc
1669     atomics_win32
1670 "
1671
1672 ARCH_LIST="
1673     aarch64
1674     alpha
1675     arm
1676     avr32
1677     avr32_ap
1678     avr32_uc
1679     bfin
1680     ia64
1681     m68k
1682     mips
1683     mips64
1684     parisc
1685     ppc
1686     ppc64
1687     s390
1688     sh4
1689     sparc
1690     sparc64
1691     tilegx
1692     tilepro
1693     tomi
1694     x86
1695     x86_32
1696     x86_64
1697 "
1698
1699 ARCH_EXT_LIST_ARM="
1700     armv5te
1701     armv6
1702     armv6t2
1703     armv8
1704     neon
1705     vfp
1706     vfpv3
1707     setend
1708 "
1709
1710 ARCH_EXT_LIST_MIPS="
1711     mipsfpu
1712     mips32r2
1713     mips32r5
1714     mips64r2
1715     mips32r6
1716     mips64r6
1717     mipsdsp
1718     mipsdspr2
1719     msa
1720 "
1721
1722 ARCH_EXT_LIST_LOONGSON="
1723     loongson2
1724     loongson3
1725     mmi
1726 "
1727
1728 ARCH_EXT_LIST_X86_SIMD="
1729     aesni
1730     amd3dnow
1731     amd3dnowext
1732     avx
1733     avx2
1734     fma3
1735     fma4
1736     mmx
1737     mmxext
1738     sse
1739     sse2
1740     sse3
1741     sse4
1742     sse42
1743     ssse3
1744     xop
1745 "
1746
1747 ARCH_EXT_LIST_PPC="
1748     altivec
1749     dcbzl
1750     ldbrx
1751     power8
1752     ppc4xx
1753     vsx
1754 "
1755
1756 ARCH_EXT_LIST_X86="
1757     $ARCH_EXT_LIST_X86_SIMD
1758     cpunop
1759     i686
1760 "
1761
1762 ARCH_EXT_LIST="
1763     $ARCH_EXT_LIST_ARM
1764     $ARCH_EXT_LIST_PPC
1765     $ARCH_EXT_LIST_X86
1766     $ARCH_EXT_LIST_MIPS
1767     $ARCH_EXT_LIST_LOONGSON
1768 "
1769
1770 ARCH_FEATURES="
1771     aligned_stack
1772     fast_64bit
1773     fast_clz
1774     fast_cmov
1775     local_aligned_8
1776     local_aligned_16
1777     local_aligned_32
1778     simd_align_16
1779 "
1780
1781 BUILTIN_LIST="
1782     atomic_cas_ptr
1783     atomic_compare_exchange
1784     machine_rw_barrier
1785     MemoryBarrier
1786     mm_empty
1787     rdtsc
1788     sarestart
1789     sem_timedwait
1790     sync_val_compare_and_swap
1791 "
1792 HAVE_LIST_CMDLINE="
1793     inline_asm
1794     symver
1795     yasm
1796 "
1797
1798 HAVE_LIST_PUB="
1799     bigendian
1800     fast_unaligned
1801     incompatible_libav_abi
1802 "
1803
1804 HEADERS_LIST="
1805     alsa_asoundlib_h
1806     altivec_h
1807     arpa_inet_h
1808     asm_types_h
1809     cdio_paranoia_h
1810     cdio_paranoia_paranoia_h
1811     dispatch_dispatch_h
1812     dev_bktr_ioctl_bt848_h
1813     dev_bktr_ioctl_meteor_h
1814     dev_ic_bt8xx_h
1815     dev_video_bktr_ioctl_bt848_h
1816     dev_video_meteor_ioctl_meteor_h
1817     direct_h
1818     dirent_h
1819     dlfcn_h
1820     d3d11_h
1821     dxva_h
1822     ES2_gl_h
1823     gsm_h
1824     io_h
1825     mach_mach_time_h
1826     machine_ioctl_bt848_h
1827     machine_ioctl_meteor_h
1828     malloc_h
1829     opencv2_core_core_c_h
1830     openjpeg_2_1_openjpeg_h
1831     openjpeg_2_0_openjpeg_h
1832     openjpeg_1_5_openjpeg_h
1833     OpenGL_gl3_h
1834     poll_h
1835     sndio_h
1836     soundcard_h
1837     sys_mman_h
1838     sys_param_h
1839     sys_resource_h
1840     sys_select_h
1841     sys_soundcard_h
1842     sys_time_h
1843     sys_un_h
1844     sys_videoio_h
1845     termios_h
1846     udplite_h
1847     unistd_h
1848     valgrind_valgrind_h
1849     windows_h
1850     winsock2_h
1851 "
1852
1853 INTRINSICS_LIST="
1854     intrinsics_neon
1855 "
1856
1857 COMPLEX_FUNCS="
1858     cabs
1859     cexp
1860 "
1861
1862 MATH_FUNCS="
1863     atanf
1864     atan2f
1865     cbrt
1866     cbrtf
1867     copysign
1868     cosf
1869     erf
1870     exp2
1871     exp2f
1872     expf
1873     hypot
1874     isfinite
1875     isinf
1876     isnan
1877     ldexpf
1878     llrint
1879     llrintf
1880     log2
1881     log2f
1882     log10f
1883     lrint
1884     lrintf
1885     powf
1886     rint
1887     round
1888     roundf
1889     sinf
1890     trunc
1891     truncf
1892 "
1893
1894 SYSTEM_FUNCS="
1895     access
1896     aligned_malloc
1897     arc4random
1898     clock_gettime
1899     closesocket
1900     CommandLineToArgvW
1901     CoTaskMemFree
1902     CryptGenRandom
1903     dlopen
1904     fcntl
1905     flt_lim
1906     fork
1907     getaddrinfo
1908     gethrtime
1909     getopt
1910     GetProcessAffinityMask
1911     GetProcessMemoryInfo
1912     GetProcessTimes
1913     getrusage
1914     GetSystemTimeAsFileTime
1915     gettimeofday
1916     glob
1917     glXGetProcAddress
1918     gmtime_r
1919     inet_aton
1920     isatty
1921     jack_port_get_latency_range
1922     kbhit
1923     LoadLibrary
1924     localtime_r
1925     lstat
1926     lzo1x_999_compress
1927     mach_absolute_time
1928     MapViewOfFile
1929     memalign
1930     mkstemp
1931     mmap
1932     mprotect
1933     nanosleep
1934     PeekNamedPipe
1935     posix_memalign
1936     pthread_cancel
1937     sched_getaffinity
1938     SetConsoleTextAttribute
1939     SetConsoleCtrlHandler
1940     setmode
1941     setrlimit
1942     Sleep
1943     strerror_r
1944     sysconf
1945     sysctl
1946     usleep
1947     UTGetOSTypeFromString
1948     VirtualAlloc
1949     wglGetProcAddress
1950 "
1951
1952 TOOLCHAIN_FEATURES="
1953     as_dn_directive
1954     as_func
1955     as_object_arch
1956     asm_mod_q
1957     attribute_may_alias
1958     attribute_packed
1959     ebp_available
1960     ebx_available
1961     gnu_as
1962     gnu_windres
1963     ibm_asm
1964     inline_asm_direct_symbol_refs
1965     inline_asm_labels
1966     inline_asm_nonlocal_labels
1967     pragma_deprecated
1968     rsync_contimeout
1969     symver_asm_label
1970     symver_gnu_asm
1971     vfp_args
1972     xform_asm
1973     xmm_clobbers
1974 "
1975
1976 TYPES_LIST="
1977     CONDITION_VARIABLE_Ptr
1978     socklen_t
1979     struct_addrinfo
1980     struct_group_source_req
1981     struct_ip_mreq_source
1982     struct_ipv6_mreq
1983     struct_msghdr_msg_flags
1984     struct_pollfd
1985     struct_rusage_ru_maxrss
1986     struct_sctp_event_subscribe
1987     struct_sockaddr_in6
1988     struct_sockaddr_sa_len
1989     struct_sockaddr_storage
1990     struct_stat_st_mtim_tv_nsec
1991     struct_v4l2_frmivalenum_discrete
1992 "
1993
1994 HAVE_LIST="
1995     $ARCH_EXT_LIST
1996     $(add_suffix _external $ARCH_EXT_LIST)
1997     $(add_suffix _inline   $ARCH_EXT_LIST)
1998     $ARCH_FEATURES
1999     $ATOMICS_LIST
2000     $BUILTIN_LIST
2001     $COMPLEX_FUNCS
2002     $HAVE_LIST_CMDLINE
2003     $HAVE_LIST_PUB
2004     $HEADERS_LIST
2005     $INTRINSICS_LIST
2006     $MATH_FUNCS
2007     $SYSTEM_FUNCS
2008     $THREADS_LIST
2009     $TOOLCHAIN_FEATURES
2010     $TYPES_LIST
2011     atomics_native
2012     dos_paths
2013     dxva2_lib
2014     dxva2api_cobj
2015     libc_msvcrt
2016     libdc1394_1
2017     libdc1394_2
2018     makeinfo
2019     makeinfo_html
2020     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2021     perl
2022     pod2man
2023     sdl2
2024     section_data_rel_ro
2025     texi2html
2026     threads
2027     vaapi_drm
2028     vaapi_x11
2029     vdpau_x11
2030     winrt
2031     xlib
2032 "
2033
2034 # options emitted with CONFIG_ prefix but not available on the command line
2035 CONFIG_EXTRA="
2036     aandcttables
2037     ac3dsp
2038     audio_frame_queue
2039     audiodsp
2040     blockdsp
2041     bswapdsp
2042     cabac
2043     dirac_parse
2044     dvprofile
2045     exif
2046     faandct
2047     faanidct
2048     fdctdsp
2049     flacdsp
2050     fmtconvert
2051     frame_thread_encoder
2052     g722dsp
2053     golomb
2054     gplv3
2055     h263dsp
2056     h264chroma
2057     h264dsp
2058     h264pred
2059     h264qpel
2060     hpeldsp
2061     huffman
2062     huffyuvdsp
2063     huffyuvencdsp
2064     idctdsp
2065     iirfilter
2066     imdct15
2067     intrax8
2068     iso_media
2069     ividsp
2070     jpegtables
2071     lgplv3
2072     libx262
2073     llauddsp
2074     llviddsp
2075     lpc
2076     lzf
2077     me_cmp
2078     mpeg_er
2079     mpegaudio
2080     mpegaudiodsp
2081     mpegvideo
2082     mpegvideoenc
2083     mss34dsp
2084     pixblockdsp
2085     qpeldsp
2086     qsv
2087     qsvdec
2088     qsvenc
2089     rangecoder
2090     riffdec
2091     riffenc
2092     rtpdec
2093     rtpenc_chain
2094     rv34dsp
2095     sinewin
2096     snappy
2097     srtp
2098     startcode
2099     texturedsp
2100     texturedspenc
2101     tpeldsp
2102     vaapi_encode
2103     vc1dsp
2104     videodsp
2105     vp3dsp
2106     vp56dsp
2107     vp8dsp
2108     vt_bt2020
2109     wma_freqs
2110     wmv2dsp
2111 "
2112
2113 CMDLINE_SELECT="
2114     $ARCH_EXT_LIST
2115     $CONFIG_LIST
2116     $HAVE_LIST_CMDLINE
2117     $THREADS_LIST
2118     asm
2119     cross_compile
2120     debug
2121     extra_warnings
2122     logging
2123     lto
2124     optimizations
2125     rpath
2126     stripping
2127 "
2128
2129 PATHS_LIST="
2130     bindir
2131     datadir
2132     docdir
2133     incdir
2134     libdir
2135     mandir
2136     pkgconfigdir
2137     prefix
2138     shlibdir
2139     install_name_dir
2140 "
2141
2142 CMDLINE_SET="
2143     $PATHS_LIST
2144     ar
2145     arch
2146     as
2147     assert_level
2148     build_suffix
2149     cc
2150     objcc
2151     cpu
2152     cross_prefix
2153     custom_allocator
2154     cxx
2155     dep_cc
2156     doxygen
2157     env
2158     extra_version
2159     gas
2160     host_cc
2161     host_cflags
2162     host_ld
2163     host_ldflags
2164     host_libs
2165     host_os
2166     install
2167     ld
2168     ln_s
2169     logfile
2170     malloc_prefix
2171     nm
2172     optflags
2173     pkg_config
2174     pkg_config_flags
2175     progs_suffix
2176     random_seed
2177     ranlib
2178     samples
2179     strip
2180     sws_max_filter_size
2181     sysinclude
2182     sysroot
2183     target_exec
2184     target_os
2185     target_path
2186     target_samples
2187     tempprefix
2188     toolchain
2189     valgrind
2190     yasmexe
2191 "
2192
2193 CMDLINE_APPEND="
2194     extra_cflags
2195     extra_cxxflags
2196     extra_objcflags
2197     host_cppflags
2198 "
2199
2200 # code dependency declarations
2201
2202 # architecture extensions
2203
2204 armv5te_deps="arm"
2205 armv6_deps="arm"
2206 armv6t2_deps="arm"
2207 armv8_deps="aarch64"
2208 neon_deps_any="aarch64 arm"
2209 intrinsics_neon_deps="neon"
2210 vfp_deps_any="aarch64 arm"
2211 vfpv3_deps="vfp"
2212 setend_deps="arm"
2213
2214 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2215
2216 loongson2_deps="mips"
2217 loongson3_deps="mips"
2218 mipsfpu_deps="mips"
2219 mipsdsp_deps="mips"
2220 mipsdspr2_deps="mips"
2221 mips32r2_deps="mips"
2222 mips32r5_deps="mips"
2223 mips32r6_deps="mips"
2224 mips64r2_deps="mips"
2225 mips64r6_deps="mips"
2226 msa_deps="mipsfpu"
2227 mmi_deps="mips"
2228
2229 altivec_deps="ppc"
2230 dcbzl_deps="ppc"
2231 ldbrx_deps="ppc"
2232 ppc4xx_deps="ppc"
2233 vsx_deps="altivec"
2234 power8_deps="vsx"
2235
2236 cpunop_deps="i686"
2237 x86_64_select="i686"
2238 x86_64_suggest="fast_cmov"
2239
2240 amd3dnow_deps="mmx"
2241 amd3dnowext_deps="amd3dnow"
2242 i686_deps="x86"
2243 mmx_deps="x86"
2244 mmxext_deps="mmx"
2245 sse_deps="mmxext"
2246 sse2_deps="sse"
2247 sse3_deps="sse2"
2248 ssse3_deps="sse3"
2249 sse4_deps="ssse3"
2250 sse42_deps="sse4"
2251 aesni_deps="sse42"
2252 avx_deps="sse42"
2253 xop_deps="avx"
2254 fma3_deps="avx"
2255 fma4_deps="avx"
2256 avx2_deps="avx"
2257
2258 mmx_external_deps="yasm"
2259 mmx_inline_deps="inline_asm"
2260 mmx_suggest="mmx_external mmx_inline"
2261
2262 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2263     eval dep=\$${ext}_deps
2264     eval ${ext}_external_deps='"${dep}_external"'
2265     eval ${ext}_inline_deps='"${dep}_inline"'
2266     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2267 done
2268
2269 aligned_stack_if_any="aarch64 ppc x86"
2270 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2271 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2272 fast_unaligned_if_any="aarch64 ppc x86"
2273 simd_align_16_if_any="altivec neon sse"
2274
2275 # system capabilities
2276 symver_if_any="symver_asm_label symver_gnu_asm"
2277 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2278
2279 # threading support
2280 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2281 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2282 atomics_win32_if="MemoryBarrier"
2283 atomics_native_if_any="$ATOMICS_LIST"
2284 w32threads_deps="atomics_native"
2285 threads_if_any="$THREADS_LIST"
2286
2287 # subsystems
2288 dct_select="rdft"
2289 dirac_parse_select="golomb"
2290 error_resilience_select="me_cmp"
2291 faandct_deps="faan fdctdsp"
2292 faanidct_deps="faan idctdsp"
2293 h264dsp_select="startcode"
2294 frame_thread_encoder_deps="encoders threads"
2295 intrax8_select="blockdsp idctdsp"
2296 mdct_select="fft"
2297 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2298 mpeg_er_select="error_resilience"
2299 mpegaudio_select="mpegaudiodsp"
2300 mpegaudiodsp_select="dct"
2301 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2302 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2303 vc1dsp_select="h264chroma qpeldsp startcode"
2304 rdft_select="fft"
2305
2306 # decoders / encoders
2307 aac_decoder_select="imdct15 mdct sinewin"
2308 aac_fixed_decoder_select="mdct sinewin"
2309 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2310 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2311 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2312 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2313 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2314 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2315 adpcm_g722_decoder_select="g722dsp"
2316 adpcm_g722_encoder_select="g722dsp"
2317 aic_decoder_select="golomb idctdsp"
2318 alac_encoder_select="lpc"
2319 als_decoder_select="bswapdsp"
2320 amrnb_decoder_select="lsp"
2321 amrwb_decoder_select="lsp"
2322 amv_decoder_select="sp5x_decoder exif"
2323 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2324 ape_decoder_select="bswapdsp llauddsp"
2325 apng_decoder_select="zlib"
2326 apng_encoder_select="huffyuvencdsp zlib"
2327 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2328 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2329 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2330 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2331 atrac1_decoder_select="mdct sinewin"
2332 atrac3_decoder_select="mdct"
2333 atrac3p_decoder_select="mdct sinewin"
2334 avrn_decoder_select="exif jpegtables"
2335 bink_decoder_select="blockdsp hpeldsp"
2336 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2337 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2338 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2339 cllc_decoder_select="bswapdsp"
2340 comfortnoise_encoder_select="lpc"
2341 cook_decoder_select="audiodsp mdct sinewin"
2342 cscd_decoder_select="lzo"
2343 cscd_decoder_suggest="zlib"
2344 dca_decoder_select="mdct"
2345 dds_decoder_select="texturedsp"
2346 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2347 dnxhd_decoder_select="blockdsp idctdsp"
2348 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2349 dvvideo_decoder_select="dvprofile idctdsp"
2350 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2351 dxa_decoder_select="zlib"
2352 dxv_decoder_select="lzf texturedsp"
2353 eac3_decoder_select="ac3_decoder"
2354 eac3_encoder_select="ac3_encoder"
2355 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2356 eatgq_decoder_select="aandcttables"
2357 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2358 exr_decoder_select="zlib"
2359 ffv1_decoder_select="golomb rangecoder"
2360 ffv1_encoder_select="rangecoder"
2361 ffvhuff_decoder_select="huffyuv_decoder"
2362 ffvhuff_encoder_select="huffyuv_encoder"
2363 fic_decoder_select="golomb"
2364 flac_decoder_select="flacdsp golomb"
2365 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2366 flashsv2_decoder_select="zlib"
2367 flashsv2_encoder_select="zlib"
2368 flashsv_decoder_select="zlib"
2369 flashsv_encoder_select="zlib"
2370 flv_decoder_select="h263_decoder"
2371 flv_encoder_select="h263_encoder"
2372 fourxm_decoder_select="blockdsp bswapdsp"
2373 fraps_decoder_select="bswapdsp huffman"
2374 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2375 g729_decoder_select="audiodsp"
2376 h261_decoder_select="mpegvideo"
2377 h261_encoder_select="aandcttables mpegvideoenc"
2378 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2379 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2380 h263i_decoder_select="h263_decoder"
2381 h263p_decoder_select="h263_decoder"
2382 h263p_encoder_select="h263_encoder"
2383 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2384 h264_decoder_suggest="error_resilience"
2385 hap_decoder_select="snappy texturedsp"
2386 hap_encoder_deps="libsnappy"
2387 hap_encoder_select="texturedspenc"
2388 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2389 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2390 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2391 iac_decoder_select="imc_decoder"
2392 imc_decoder_select="bswapdsp fft mdct sinewin"
2393 indeo3_decoder_select="hpeldsp"
2394 indeo4_decoder_select="ividsp"
2395 indeo5_decoder_select="ividsp"
2396 interplay_video_decoder_select="hpeldsp"
2397 jpegls_decoder_select="golomb mjpeg_decoder"
2398 jpegls_encoder_select="golomb"
2399 jv_decoder_select="blockdsp"
2400 lagarith_decoder_select="huffyuvdsp"
2401 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2402 loco_decoder_select="golomb"
2403 magicyuv_decoder_select="huffyuvdsp"
2404 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2405 metasound_decoder_select="lsp mdct sinewin"
2406 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2407 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2408 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2409 mjpegb_decoder_select="mjpeg_decoder"
2410 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2411 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2412 mlp_decoder_select="mlp_parser"
2413 motionpixels_decoder_select="bswapdsp"
2414 mp1_decoder_select="mpegaudio"
2415 mp1float_decoder_select="mpegaudio"
2416 mp2_decoder_select="mpegaudio"
2417 mp2float_decoder_select="mpegaudio"
2418 mp3_decoder_select="mpegaudio"
2419 mp3adu_decoder_select="mpegaudio"
2420 mp3adufloat_decoder_select="mpegaudio"
2421 mp3float_decoder_select="mpegaudio"
2422 mp3on4_decoder_select="mpegaudio"
2423 mp3on4float_decoder_select="mpegaudio"
2424 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2425 mpc8_decoder_select="mpegaudiodsp"
2426 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2427 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2428 mpegvideo_decoder_select="mpegvideo"
2429 mpeg1video_decoder_select="mpegvideo"
2430 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2431 mpeg2video_decoder_select="mpegvideo"
2432 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2433 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2434 mpeg4_encoder_select="h263_encoder"
2435 msa1_decoder_select="mss34dsp"
2436 msmpeg4v1_decoder_select="h263_decoder"
2437 msmpeg4v2_decoder_select="h263_decoder"
2438 msmpeg4v2_encoder_select="h263_encoder"
2439 msmpeg4v3_decoder_select="h263_decoder"
2440 msmpeg4v3_encoder_select="h263_encoder"
2441 mss2_decoder_select="vc1_decoder mpegvideo"
2442 mts2_decoder_select="mss34dsp"
2443 mxpeg_decoder_select="mjpeg_decoder"
2444 nellymoser_decoder_select="mdct sinewin"
2445 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2446 nuv_decoder_select="idctdsp lzo"
2447 on2avc_decoder_select="mdct"
2448 opus_decoder_deps="swresample"
2449 opus_decoder_select="imdct15"
2450 png_decoder_select="zlib"
2451 png_encoder_select="huffyuvencdsp zlib"
2452 prores_decoder_select="blockdsp idctdsp"
2453 prores_encoder_select="fdctdsp"
2454 qcelp_decoder_select="lsp"
2455 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2456 ra_144_decoder_select="audiodsp"
2457 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2458 ralf_decoder_select="golomb"
2459 rawvideo_decoder_select="bswapdsp"
2460 rscc_decoder_select="zlib"
2461 rtjpeg_decoder_select="me_cmp"
2462 rv10_decoder_select="h263_decoder"
2463 rv10_encoder_select="h263_encoder"
2464 rv20_decoder_select="h263_decoder"
2465 rv20_encoder_select="h263_encoder"
2466 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2467 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2468 screenpresso_decoder_select="zlib"
2469 shorten_decoder_select="golomb"
2470 sipr_decoder_select="lsp"
2471 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2472 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2473 sonic_decoder_select="golomb rangecoder"
2474 sonic_encoder_select="golomb rangecoder"
2475 sonic_ls_encoder_select="golomb rangecoder"
2476 sp5x_decoder_select="mjpeg_decoder"
2477 svq1_decoder_select="hpeldsp"
2478 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2479 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2480 svq3_decoder_suggest="zlib"
2481 tak_decoder_select="audiodsp"
2482 tdsc_decoder_select="zlib mjpeg_decoder"
2483 theora_decoder_select="vp3_decoder"
2484 thp_decoder_select="mjpeg_decoder"
2485 tiff_decoder_suggest="zlib lzma"
2486 tiff_encoder_suggest="zlib"
2487 truehd_decoder_select="mlp_parser"
2488 truemotion2_decoder_select="bswapdsp"
2489 truespeech_decoder_select="bswapdsp"
2490 tscc_decoder_select="zlib"
2491 twinvq_decoder_select="mdct lsp sinewin"
2492 txd_decoder_select="texturedsp"
2493 utvideo_decoder_select="bswapdsp"
2494 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2495 vble_decoder_select="huffyuvdsp"
2496 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2497 vc1_qsv_decoder_deps="libmfx"
2498 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2499 vc1image_decoder_select="vc1_decoder"
2500 vorbis_decoder_select="mdct"
2501 vorbis_encoder_select="mdct"
2502 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2503 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2504 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2505 vp6a_decoder_select="vp6_decoder"
2506 vp6f_decoder_select="vp6_decoder"
2507 vp7_decoder_select="h264pred videodsp vp8dsp"
2508 vp8_decoder_select="h264pred videodsp vp8dsp"
2509 vp9_decoder_select="videodsp vp9_parser"
2510 webp_decoder_select="vp8_decoder exif"
2511 wmalossless_decoder_select="llauddsp"
2512 wmapro_decoder_select="mdct sinewin wma_freqs"
2513 wmav1_decoder_select="mdct sinewin wma_freqs"
2514 wmav1_encoder_select="mdct sinewin wma_freqs"
2515 wmav2_decoder_select="mdct sinewin wma_freqs"
2516 wmav2_encoder_select="mdct sinewin wma_freqs"
2517 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2518 wmv1_decoder_select="h263_decoder"
2519 wmv1_encoder_select="h263_encoder"
2520 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2521 wmv2_encoder_select="h263_encoder wmv2dsp"
2522 wmv3_decoder_select="vc1_decoder"
2523 wmv3image_decoder_select="wmv3_decoder"
2524 xma1_decoder_select="wmapro_decoder"
2525 xma2_decoder_select="wmapro_decoder"
2526 zerocodec_decoder_select="zlib"
2527 zlib_decoder_select="zlib"
2528 zlib_encoder_select="zlib"
2529 zmbv_decoder_select="zlib"
2530 zmbv_encoder_select="zlib"
2531
2532 # platform codecs
2533 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2534 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2535
2536 # hardware accelerators
2537 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2538 cuvid_deps="cuda"
2539 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2540 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2541 vaapi_deps="va_va_h"
2542 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2543 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2544 vda_deps="vda_framework pthreads"
2545 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2546 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2547 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2548 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2549 xvmc_deps="X11_extensions_XvMClib_h"
2550
2551 h263_cuvid_hwaccel_deps="cuda cuvid"
2552 h263_vaapi_hwaccel_deps="vaapi"
2553 h263_vaapi_hwaccel_select="h263_decoder"
2554 h263_videotoolbox_hwaccel_deps="videotoolbox"
2555 h263_videotoolbox_hwaccel_select="h263_decoder"
2556 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2557 h264_cuvid_hwaccel_deps="cuda cuvid"
2558 h264_d3d11va_hwaccel_deps="d3d11va"
2559 h264_d3d11va_hwaccel_select="h264_decoder"
2560 h264_dxva2_hwaccel_deps="dxva2"
2561 h264_dxva2_hwaccel_select="h264_decoder"
2562 h264_mediacodec_decoder_deps="mediacodec"
2563 h264_mediacodec_hwaccel_deps="mediacodec"
2564 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2565 h264_mmal_decoder_deps="mmal"
2566 h264_mmal_decoder_select="mmal"
2567 h264_mmal_hwaccel_deps="mmal"
2568 h264_omx_encoder_deps="omx"
2569 h264_qsv_hwaccel_deps="libmfx"
2570 h264_vaapi_hwaccel_deps="vaapi"
2571 h264_vaapi_hwaccel_select="h264_decoder"
2572 h264_vda_decoder_deps="vda"
2573 h264_vda_decoder_select="h264_decoder"
2574 h264_vda_hwaccel_deps="vda"
2575 h264_vda_hwaccel_select="h264_decoder"
2576 h264_vda_old_hwaccel_deps="vda"
2577 h264_vda_old_hwaccel_select="h264_decoder"
2578 h264_vdpau_decoder_deps="vdpau"
2579 h264_vdpau_decoder_select="h264_decoder"
2580 h264_vdpau_hwaccel_deps="vdpau"
2581 h264_vdpau_hwaccel_select="h264_decoder"
2582 h264_videotoolbox_hwaccel_deps="videotoolbox"
2583 h264_videotoolbox_hwaccel_select="h264_decoder"
2584 hevc_cuvid_hwaccel_deps="cuda cuvid"
2585 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2586 hevc_d3d11va_hwaccel_select="hevc_decoder"
2587 hevc_mediacodec_decoder_deps="mediacodec"
2588 hevc_mediacodec_hwaccel_deps="mediacodec"
2589 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2590 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2591 hevc_dxva2_hwaccel_select="hevc_decoder"
2592 hevc_qsv_hwaccel_deps="libmfx"
2593 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2594 hevc_vaapi_hwaccel_select="hevc_decoder"
2595 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2596 hevc_vdpau_hwaccel_select="hevc_decoder"
2597 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2598 mpeg_vdpau_decoder_deps="vdpau"
2599 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2600 mpeg_xvmc_hwaccel_deps="xvmc"
2601 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2602 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2603 mpeg1_vdpau_decoder_deps="vdpau"
2604 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2605 mpeg1_vdpau_hwaccel_deps="vdpau"
2606 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2607 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2608 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2609 mpeg1_xvmc_hwaccel_deps="xvmc"
2610 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2611 mpeg2_crystalhd_decoder_select="crystalhd"
2612 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2613 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2614 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2615 mpeg2_dxva2_hwaccel_deps="dxva2"
2616 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2617 mpeg2_mmal_decoder_deps="mmal"
2618 mpeg2_mmal_decoder_select="mmal"
2619 mpeg2_mmal_hwaccel_deps="mmal"
2620 mpeg2_qsv_hwaccel_deps="libmfx"
2621 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2622 mpeg2_vaapi_hwaccel_deps="vaapi"
2623 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2624 mpeg2_vdpau_hwaccel_deps="vdpau"
2625 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2626 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2627 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2628 mpeg2_xvmc_hwaccel_deps="xvmc"
2629 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2630 mpeg4_crystalhd_decoder_select="crystalhd"
2631 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2632 mpeg4_mediacodec_decoder_deps="mediacodec"
2633 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2634 mpeg4_mmal_decoder_deps="mmal"
2635 mpeg4_mmal_decoder_select="mmal"
2636 mpeg4_mmal_hwaccel_deps="mmal"
2637 mpeg4_omx_encoder_deps="omx"
2638 mpeg4_vaapi_hwaccel_deps="vaapi"
2639 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2640 mpeg4_vdpau_decoder_deps="vdpau"
2641 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2642 mpeg4_vdpau_hwaccel_deps="vdpau"
2643 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2644 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2645 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2646 msmpeg4_crystalhd_decoder_select="crystalhd"
2647 vc1_crystalhd_decoder_select="crystalhd"
2648 vc1_cuvid_hwaccel_deps="cuda cuvid"
2649 vc1_d3d11va_hwaccel_deps="d3d11va"
2650 vc1_d3d11va_hwaccel_select="vc1_decoder"
2651 vc1_dxva2_hwaccel_deps="dxva2"
2652 vc1_dxva2_hwaccel_select="vc1_decoder"
2653 vc1_mmal_decoder_deps="mmal"
2654 vc1_mmal_decoder_select="mmal"
2655 vc1_mmal_hwaccel_deps="mmal"
2656 vc1_qsv_hwaccel_deps="libmfx"
2657 vc1_qsv_hwaccel_select="qsvdec_vc1"
2658 vc1_vaapi_hwaccel_deps="vaapi"
2659 vc1_vaapi_hwaccel_select="vc1_decoder"
2660 vc1_vdpau_decoder_deps="vdpau"
2661 vc1_vdpau_decoder_select="vc1_decoder"
2662 vc1_vdpau_hwaccel_deps="vdpau"
2663 vc1_vdpau_hwaccel_select="vc1_decoder"
2664 vp8_cuvid_hwaccel_deps="cuda cuvid"
2665 vp9_cuvid_hwaccel_deps="cuda cuvid"
2666 vp8_mediacodec_decoder_deps="mediacodec"
2667 vp8_mediacodec_hwaccel_deps="mediacodec"
2668 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2669 vp9_d3d11va_hwaccel_select="vp9_decoder"
2670 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2671 vp9_dxva2_hwaccel_select="vp9_decoder"
2672 vp9_mediacodec_decoder_deps="mediacodec"
2673 vp9_mediacodec_hwaccel_deps="mediacodec"
2674 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2675 vp9_vaapi_hwaccel_select="vp9_decoder"
2676 wmv3_crystalhd_decoder_select="crystalhd"
2677 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2678 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2679 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2680 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2681 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2682
2683 # hardware-accelerated codecs
2684 omx_deps="dlopen pthreads"
2685 omx_extralibs='$ldl'
2686 qsvdec_select="qsv"
2687 qsvenc_select="qsv"
2688 vaapi_encode_deps="vaapi"
2689
2690 hwupload_cuda_filter_deps="cuda"
2691 scale_npp_filter_deps="cuda libnpp"
2692
2693 nvenc_deps_any="dlopen LoadLibrary"
2694 nvenc_encoder_deps="nvenc"
2695 h263_cuvid_decoder_deps="cuda cuvid"
2696 h263_cuvid_decoder_select="h263_cuvid_hwaccel"
2697 h264_cuvid_decoder_deps="cuda cuvid"
2698 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2699 h264_nvenc_encoder_deps="nvenc"
2700 h264_qsv_decoder_deps="libmfx"
2701 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2702 h264_qsv_encoder_deps="libmfx"
2703 h264_qsv_encoder_select="qsvenc"
2704 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2705 h264_vaapi_encoder_select="vaapi_encode golomb"
2706
2707 hevc_cuvid_decoder_deps="cuda cuvid"
2708 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2709 hevc_nvenc_encoder_deps="nvenc"
2710 hevc_qsv_decoder_deps="libmfx"
2711 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2712 hevc_qsv_encoder_deps="libmfx"
2713 hevc_qsv_encoder_select="qsvenc"
2714 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2715 hevc_vaapi_encoder_select="vaapi_encode golomb"
2716 mjpeg_cuvid_decoder_deps="cuda cuvid"
2717 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2718 mpeg1_cuvid_decoder_deps="cuda cuvid"
2719 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2720 mpeg2_cuvid_decoder_deps="cuda cuvid"
2721 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2722 mpeg2_qsv_decoder_deps="libmfx"
2723 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2724 mpeg2_qsv_encoder_deps="libmfx"
2725 mpeg2_qsv_encoder_select="qsvenc"
2726 mpeg4_cuvid_decoder_deps="cuda cuvid"
2727 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2728 nvenc_h264_encoder_deps="nvenc"
2729 nvenc_hevc_encoder_deps="nvenc"
2730
2731 vc1_cuvid_decoder_deps="cuda cuvid"
2732 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2733 vp8_cuvid_decoder_deps="cuda cuvid"
2734 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2735 vp9_cuvid_decoder_deps="cuda cuvid"
2736 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2737
2738 # parsers
2739 h264_parser_select="golomb h264dsp"
2740 hevc_parser_select="golomb"
2741 mpegvideo_parser_select="mpegvideo"
2742 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2743 vc1_parser_select="vc1dsp"
2744
2745 # bitstream_filters
2746 mjpeg2jpeg_bsf_select="jpegtables"
2747
2748 # external libraries
2749 aac_at_decoder_deps="audiotoolbox"
2750 ac3_at_decoder_deps="audiotoolbox"
2751 ac3_at_decoder_select="ac3_parser"
2752 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2753 alac_at_decoder_deps="audiotoolbox"
2754 amr_nb_at_decoder_deps="audiotoolbox"
2755 eac3_at_decoder_deps="audiotoolbox"
2756 eac3_at_decoder_select="ac3_parser"
2757 gsm_ms_at_decoder_deps="audiotoolbox"
2758 ilbc_at_decoder_deps="audiotoolbox"
2759 mp1_at_decoder_deps="audiotoolbox"
2760 mp2_at_decoder_deps="audiotoolbox"
2761 mp3_at_decoder_deps="audiotoolbox"
2762 pcm_alaw_at_decoder_deps="audiotoolbox"
2763 pcm_mulaw_at_decoder_deps="audiotoolbox"
2764 qdmc_at_decoder_deps="audiotoolbox"
2765 qdm2_at_decoder_deps="audiotoolbox"
2766 aac_at_encoder_deps="audiotoolbox"
2767 aac_at_encoder_select="audio_frame_queue"
2768 alac_at_encoder_deps="audiotoolbox"
2769 alac_at_encoder_select="audio_frame_queue"
2770 ilbc_at_encoder_deps="audiotoolbox"
2771 ilbc_at_encoder_select="audio_frame_queue"
2772 pcm_alaw_at_encoder_deps="audiotoolbox"
2773 pcm_alaw_at_encoder_select="audio_frame_queue"
2774 pcm_mulaw_at_encoder_deps="audiotoolbox"
2775 pcm_mulaw_at_encoder_select="audio_frame_queue"
2776 chromaprint_muxer_deps="chromaprint"
2777 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2778 libcelt_decoder_deps="libcelt"
2779 libfdk_aac_decoder_deps="libfdk_aac"
2780 libfdk_aac_encoder_deps="libfdk_aac"
2781 libfdk_aac_encoder_select="audio_frame_queue"
2782 libgme_demuxer_deps="libgme"
2783 libgsm_decoder_deps="libgsm"
2784 libgsm_encoder_deps="libgsm"
2785 libgsm_ms_decoder_deps="libgsm"
2786 libgsm_ms_encoder_deps="libgsm"
2787 libilbc_decoder_deps="libilbc"
2788 libilbc_encoder_deps="libilbc"
2789 libkvazaar_encoder_deps="libkvazaar"
2790 libmodplug_demuxer_deps="libmodplug"
2791 libmp3lame_encoder_deps="libmp3lame"
2792 libmp3lame_encoder_select="audio_frame_queue"
2793 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2794 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2795 libopencore_amrnb_encoder_select="audio_frame_queue"
2796 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2797 libopenh264_decoder_deps="libopenh264"
2798 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2799 libopenh264_encoder_deps="libopenh264"
2800 libopenjpeg_decoder_deps="libopenjpeg"
2801 libopenjpeg_encoder_deps="libopenjpeg"
2802 libopenmpt_demuxer_deps="libopenmpt"
2803 libopus_decoder_deps="libopus"
2804 libopus_encoder_deps="libopus"
2805 libopus_encoder_select="audio_frame_queue"
2806 libschroedinger_decoder_deps="libschroedinger"
2807 libschroedinger_encoder_deps="libschroedinger"
2808 libshine_encoder_deps="libshine"
2809 libshine_encoder_select="audio_frame_queue"
2810 libspeex_decoder_deps="libspeex"
2811 libspeex_encoder_deps="libspeex"
2812 libspeex_encoder_select="audio_frame_queue"
2813 libtheora_encoder_deps="libtheora"
2814 libtwolame_encoder_deps="libtwolame"
2815 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2816 libvorbis_decoder_deps="libvorbis"
2817 libvorbis_encoder_deps="libvorbis"
2818 libvorbis_encoder_select="audio_frame_queue"
2819 libvpx_vp8_decoder_deps="libvpx"
2820 libvpx_vp8_encoder_deps="libvpx"
2821 libvpx_vp9_decoder_deps="libvpx"
2822 libvpx_vp9_encoder_deps="libvpx"
2823 libwavpack_encoder_deps="libwavpack"
2824 libwebp_encoder_deps="libwebp"
2825 libwebp_anim_encoder_deps="libwebp"
2826 libx262_encoder_deps="libx262"
2827 libx264_encoder_deps="libx264"
2828 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2829 libx264rgb_encoder_select="libx264_encoder"
2830 libx265_encoder_deps="libx265"
2831 libxavs_encoder_deps="libxavs"
2832 libxvid_encoder_deps="libxvid"
2833 libzvbi_teletext_decoder_deps="libzvbi"
2834 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2835 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2836 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2837 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2838 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2839
2840 # demuxers / muxers
2841 ac3_demuxer_select="ac3_parser"
2842 asf_demuxer_select="riffdec"
2843 asf_o_demuxer_select="riffdec"
2844 asf_muxer_select="riffenc"
2845 asf_stream_muxer_select="asf_muxer"
2846 avi_demuxer_select="iso_media riffdec exif"
2847 avi_muxer_select="riffenc"
2848 avisynth_demuxer_deps="avisynth"
2849 avisynth_demuxer_select="riffdec"
2850 caf_demuxer_select="iso_media riffdec"
2851 dash_muxer_select="mp4_muxer"
2852 dirac_demuxer_select="dirac_parser"
2853 dts_demuxer_select="dca_parser"
2854 dtshd_demuxer_select="dca_parser"
2855 dv_demuxer_select="dvprofile"
2856 dv_muxer_select="dvprofile"
2857 dxa_demuxer_select="riffdec"
2858 eac3_demuxer_select="ac3_parser"
2859 f4v_muxer_select="mov_muxer"
2860 fifo_muxer_deps="threads"
2861 flac_demuxer_select="flac_parser"
2862 hds_muxer_select="flv_muxer"
2863 hls_muxer_select="mpegts_muxer"
2864 image2_alias_pix_demuxer_select="image2_demuxer"
2865 image2_brender_pix_demuxer_select="image2_demuxer"
2866 ipod_muxer_select="mov_muxer"
2867 ismv_muxer_select="mov_muxer"
2868 libnut_demuxer_deps="libnut"
2869 libnut_muxer_deps="libnut"
2870 matroska_audio_muxer_select="matroska_muxer"
2871 matroska_demuxer_select="iso_media riffdec"
2872 matroska_demuxer_suggest="bzlib lzo zlib"
2873 matroska_muxer_select="iso_media riffenc"
2874 mmf_muxer_select="riffenc"
2875 mov_demuxer_select="iso_media riffdec"
2876 mov_demuxer_suggest="zlib"
2877 mov_muxer_select="iso_media riffenc rtpenc_chain"
2878 mp3_demuxer_select="mpegaudio_parser"
2879 mp4_muxer_select="mov_muxer"
2880 mpegts_demuxer_select="iso_media"
2881 mpegts_muxer_select="adts_muxer latm_muxer"
2882 mpegtsraw_demuxer_select="mpegts_demuxer"
2883 mxf_d10_muxer_select="mxf_muxer"
2884 mxf_opatom_muxer_select="mxf_muxer"
2885 nut_muxer_select="riffenc"
2886 nuv_demuxer_select="riffdec"
2887 oga_muxer_select="ogg_muxer"
2888 ogg_demuxer_select="dirac_parse"
2889 ogv_muxer_select="ogg_muxer"
2890 opus_muxer_select="ogg_muxer"
2891 psp_muxer_select="mov_muxer"
2892 rtp_demuxer_select="sdp_demuxer"
2893 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2894 rtsp_demuxer_select="http_protocol rtpdec"
2895 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2896 sap_demuxer_select="sdp_demuxer"
2897 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2898 sdp_demuxer_select="rtpdec"
2899 smoothstreaming_muxer_select="ismv_muxer"
2900 spdif_muxer_select="aac_parser"
2901 spx_muxer_select="ogg_muxer"
2902 swf_demuxer_suggest="zlib"
2903 tak_demuxer_select="tak_parser"
2904 tg2_muxer_select="mov_muxer"
2905 tgp_muxer_select="mov_muxer"
2906 vobsub_demuxer_select="mpegps_demuxer"
2907 w64_demuxer_select="wav_demuxer"
2908 w64_muxer_select="wav_muxer"
2909 wav_demuxer_select="riffdec"
2910 wav_muxer_select="riffenc"
2911 webm_muxer_select="iso_media riffenc"
2912 webm_dash_manifest_demuxer_select="matroska_demuxer"
2913 wtv_demuxer_select="mpegts_demuxer riffdec"
2914 wtv_muxer_select="mpegts_muxer riffenc"
2915 xmv_demuxer_select="riffdec"
2916 xwma_demuxer_select="riffdec"
2917
2918 # indevs / outdevs
2919 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2920 alsa_outdev_deps="alsa_asoundlib_h"
2921 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2922 avfoundation_indev_select="avfoundation"
2923 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2924 caca_outdev_deps="libcaca"
2925 decklink_indev_deps="decklink pthreads"
2926 decklink_indev_extralibs="-lstdc++"
2927 decklink_outdev_deps="decklink pthreads"
2928 decklink_outdev_extralibs="-lstdc++"
2929 dshow_indev_deps="IBaseFilter"
2930 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2931 dv1394_indev_deps="dv1394"
2932 dv1394_indev_select="dv_demuxer"
2933 fbdev_indev_deps="linux_fb_h"
2934 fbdev_outdev_deps="linux_fb_h"
2935 gdigrab_indev_deps="CreateDIBSection"
2936 gdigrab_indev_extralibs="-lgdi32"
2937 gdigrab_indev_select="bmp_decoder"
2938 iec61883_indev_deps="libiec61883"
2939 jack_indev_deps="jack_jack_h"
2940 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2941 lavfi_indev_deps="avfilter"
2942 libcdio_indev_deps="libcdio"
2943 libdc1394_indev_deps="libdc1394"
2944 libv4l2_indev_deps="libv4l2"
2945 openal_indev_deps="openal"
2946 opengl_outdev_deps="opengl"
2947 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2948 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2949 pulse_indev_deps="libpulse"
2950 pulse_outdev_deps="libpulse"
2951 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2952 qtkit_indev_select="qtkit"
2953 sdl2_outdev_deps="sdl2"
2954 sndio_indev_deps="sndio_h"
2955 sndio_outdev_deps="sndio_h"
2956 v4l_indev_deps="linux_videodev_h"
2957 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2958 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2959 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2960 vfwcap_indev_extralibs="-lavicap32"
2961 x11grab_indev_deps="x11grab"
2962 x11grab_xcb_indev_deps="libxcb"
2963 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2964 xv_outdev_extralibs="-lXv -lX11 -lXext"
2965
2966 # protocols
2967 async_protocol_deps="threads"
2968 bluray_protocol_deps="libbluray"
2969 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2970 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2971 ffrtmpcrypt_protocol_select="tcp_protocol"
2972 ffrtmphttp_protocol_deps="!librtmp_protocol"
2973 ffrtmphttp_protocol_select="http_protocol"
2974 ftp_protocol_select="tcp_protocol"
2975 gopher_protocol_select="network"
2976 http_protocol_select="tcp_protocol"
2977 httpproxy_protocol_select="tcp_protocol"
2978 https_protocol_select="tls_protocol"
2979 icecast_protocol_select="http_protocol"
2980 librtmp_protocol_deps="librtmp"
2981 librtmpe_protocol_deps="librtmp"
2982 librtmps_protocol_deps="librtmp"
2983 librtmpt_protocol_deps="librtmp"
2984 librtmpte_protocol_deps="librtmp"
2985 libsmbclient_protocol_deps="libsmbclient gplv3"
2986 libssh_protocol_deps="libssh"
2987 mmsh_protocol_select="http_protocol"
2988 mmst_protocol_select="network"
2989 rtmp_protocol_deps="!librtmp_protocol"
2990 rtmp_protocol_select="tcp_protocol"
2991 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2992 rtmps_protocol_deps="!librtmp_protocol"
2993 rtmps_protocol_select="tls_protocol"
2994 rtmpt_protocol_select="ffrtmphttp_protocol"
2995 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2996 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2997 rtp_protocol_select="udp_protocol"
2998 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2999 sctp_protocol_select="network"
3000 srtp_protocol_select="rtp_protocol srtp"
3001 tcp_protocol_select="network"
3002 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3003 tls_gnutls_protocol_select="tcp_protocol"
3004 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3005 tls_openssl_protocol_select="tcp_protocol"
3006 tls_schannel_protocol_deps="schannel"
3007 tls_schannel_protocol_select="tcp_protocol"
3008 tls_securetransport_protocol_deps="securetransport"
3009 tls_securetransport_protocol_select="tcp_protocol"
3010 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3011 udp_protocol_select="network"
3012 udplite_protocol_select="network"
3013 unix_protocol_deps="sys_un_h"
3014 unix_protocol_select="network"
3015
3016 # filters
3017 afftfilt_filter_deps="avcodec"
3018 afftfilt_filter_select="fft"
3019 amovie_filter_deps="avcodec avformat"
3020 aresample_filter_deps="swresample"
3021 ass_filter_deps="libass"
3022 asyncts_filter_deps="avresample"
3023 atempo_filter_deps="avcodec"
3024 atempo_filter_select="rdft"
3025 azmq_filter_deps="libzmq"
3026 blackframe_filter_deps="gpl"
3027 boxblur_filter_deps="gpl"
3028 bs2b_filter_deps="libbs2b"
3029 colormatrix_filter_deps="gpl"
3030 cover_rect_filter_deps="avcodec avformat gpl"
3031 cropdetect_filter_deps="gpl"
3032 delogo_filter_deps="gpl"
3033 deshake_filter_select="pixelutils"
3034 drawtext_filter_deps="libfreetype"
3035 ebur128_filter_deps="gpl"
3036 eq_filter_deps="gpl"
3037 fftfilt_filter_deps="avcodec"
3038 fftfilt_filter_select="rdft"
3039 find_rect_filter_deps="avcodec avformat gpl"
3040 firequalizer_filter_deps="avcodec"
3041 firequalizer_filter_select="rdft"
3042 flite_filter_deps="libflite"
3043 framerate_filter_select="pixelutils"
3044 frei0r_filter_deps="frei0r dlopen"
3045 frei0r_src_filter_deps="frei0r dlopen"
3046 fspp_filter_deps="gpl"
3047 geq_filter_deps="gpl"
3048 histeq_filter_deps="gpl"
3049 hqdn3d_filter_deps="gpl"
3050 interlace_filter_deps="gpl"
3051 kerndeint_filter_deps="gpl"
3052 ladspa_filter_deps="ladspa dlopen"
3053 loudnorm_filter_deps="libebur128"
3054 mcdeint_filter_deps="avcodec gpl"
3055 movie_filter_deps="avcodec avformat"
3056 mpdecimate_filter_deps="gpl"
3057 mpdecimate_filter_select="pixelutils"
3058 mptestsrc_filter_deps="gpl"
3059 negate_filter_deps="lut_filter"
3060 nnedi_filter_deps="gpl"
3061 ocr_filter_deps="libtesseract"
3062 ocv_filter_deps="libopencv"
3063 owdenoise_filter_deps="gpl"
3064 pan_filter_deps="swresample"
3065 perspective_filter_deps="gpl"
3066 phase_filter_deps="gpl"
3067 pp7_filter_deps="gpl"
3068 pp_filter_deps="gpl postproc"
3069 pullup_filter_deps="gpl"
3070 removelogo_filter_deps="avcodec avformat swscale"
3071 repeatfields_filter_deps="gpl"
3072 resample_filter_deps="avresample"
3073 rubberband_filter_deps="librubberband"
3074 sab_filter_deps="gpl swscale"
3075 scale2ref_filter_deps="swscale"
3076 scale_filter_deps="swscale"
3077 select_filter_select="pixelutils"
3078 showcqt_filter_deps="avcodec avformat swscale"
3079 showcqt_filter_select="fft"
3080 showfreqs_filter_deps="avcodec"
3081 showfreqs_filter_select="fft"
3082 showspectrum_filter_deps="avcodec"
3083 showspectrum_filter_select="fft"
3084 showspectrumpic_filter_deps="avcodec"
3085 showspectrumpic_filter_select="fft"
3086 smartblur_filter_deps="gpl swscale"
3087 sofalizer_filter_deps="netcdf avcodec"
3088 sofalizer_filter_select="fft"
3089 spectrumsynth_filter_deps="avcodec"
3090 spectrumsynth_filter_select="fft"
3091 spp_filter_deps="gpl avcodec"
3092 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3093 stereo3d_filter_deps="gpl"
3094 subtitles_filter_deps="avformat avcodec libass"
3095 super2xsai_filter_deps="gpl"
3096 pixfmts_super2xsai_test_deps="super2xsai_filter"
3097 tinterlace_filter_deps="gpl"
3098 tinterlace_merge_test_deps="tinterlace_filter"
3099 tinterlace_pad_test_deps="tinterlace_filter"
3100 uspp_filter_deps="gpl avcodec"
3101 vaguedenoiser_filter_deps="gpl"
3102 vidstabdetect_filter_deps="libvidstab"
3103 vidstabtransform_filter_deps="libvidstab"
3104 zmq_filter_deps="libzmq"
3105 zoompan_filter_deps="swscale"
3106 zscale_filter_deps="libzimg"
3107 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3108
3109 # examples
3110 avio_dir_cmd_deps="avformat avutil"
3111 avio_reading_deps="avformat avcodec avutil"
3112 decoding_encoding_example_deps="avcodec avformat avutil"
3113 demuxing_decoding_example_deps="avcodec avformat avutil"
3114 extract_mvs_example_deps="avcodec avformat avutil"
3115 filter_audio_example_deps="avfilter avutil"
3116 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3117 filtering_video_example_deps="avfilter avcodec avformat avutil"
3118 http_multiclient_example_deps="avformat avutil"
3119 metadata_example_deps="avformat avutil"
3120 muxing_example_deps="avcodec avformat avutil swscale"
3121 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3122 remuxing_example_deps="avcodec avformat avutil"
3123 resampling_audio_example_deps="avutil swresample"
3124 scaling_video_example_deps="avutil swscale"
3125 transcode_aac_example_deps="avcodec avformat swresample"
3126 transcoding_example_deps="avfilter avcodec avformat avutil"
3127
3128 # libraries, in linking order
3129 avcodec_deps="avutil"
3130 avdevice_deps="avformat avcodec avutil"
3131 avfilter_deps="avutil"
3132 avformat_deps="avcodec avutil"
3133 avresample_deps="avutil"
3134 postproc_deps="avutil gpl"
3135 swresample_deps="avutil"
3136 swscale_deps="avutil"
3137
3138 # programs
3139 ffmpeg_deps="avcodec avfilter avformat swresample"
3140 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3141                null_filter
3142                setpts_filter trim_filter"
3143 ffplay_deps="avcodec avformat swscale swresample sdl2"
3144 ffplay_libs='$sdl2_libs'
3145 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3146 ffprobe_deps="avcodec avformat"
3147 ffserver_deps="avformat fork sarestart"
3148 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3149
3150 # documentation
3151 podpages_deps="perl"
3152 manpages_deps="perl pod2man"
3153 htmlpages_deps="perl"
3154 htmlpages_deps_any="makeinfo_html texi2html"
3155 txtpages_deps="perl makeinfo"
3156 doc_deps_any="manpages htmlpages podpages txtpages"
3157
3158 # default parameters
3159
3160 logfile="config.log"
3161
3162 # installation paths
3163 prefix_default="/usr/local"
3164 bindir_default='${prefix}/bin'
3165 datadir_default='${prefix}/share/ffmpeg'
3166 docdir_default='${prefix}/share/doc/ffmpeg'
3167 incdir_default='${prefix}/include'
3168 libdir_default='${prefix}/lib'
3169 mandir_default='${prefix}/share/man'
3170
3171 # toolchain
3172 ar_default="ar"
3173 cc_default="gcc"
3174 cxx_default="g++"
3175 host_cc_default="gcc"
3176 cp_f="cp -f"
3177 doxygen_default="doxygen"
3178 install="install"
3179 ln_s_default="ln -s -f"
3180 nm_default="nm -g"
3181 objformat="elf"
3182 pkg_config_default=pkg-config
3183 ranlib_default="ranlib"
3184 strip_default="strip"
3185 version_script='--version-script'
3186 yasmexe_default="yasm"
3187 windres_default="windres"
3188
3189 # OS
3190 target_os_default=$(tolower $(uname -s))
3191 host_os=$target_os_default
3192
3193 # machine
3194 if test "$target_os_default" = aix; then
3195     arch_default=$(uname -p)
3196     strip_default="strip -X32_64"
3197 else
3198     arch_default=$(uname -m)
3199 fi
3200 cpu="generic"
3201 intrinsics="none"
3202
3203 # configurable options
3204 enable $PROGRAM_LIST
3205 enable $DOCUMENT_LIST
3206 enable $EXAMPLE_LIST
3207 enable $(filter_out avresample $LIBRARY_LIST)
3208 enable stripping
3209
3210 enable asm
3211 enable debug
3212 enable doc
3213 enable faan faandct faanidct
3214 enable optimizations
3215 enable runtime_cpudetect
3216 enable safe_bitstream_reader
3217 enable static
3218 enable swscale_alpha
3219 enable valgrind_backtrace
3220
3221 sws_max_filter_size_default=256
3222 set_default sws_max_filter_size
3223
3224 # Enable platform codecs by default.
3225 enable audiotoolbox
3226
3227 # Enable hwaccels by default.
3228 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3229 enable xlib
3230
3231 enable nvenc vda_framework videotoolbox videotoolbox_encoder
3232
3233 # build settings
3234 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3235 LIBPREF="lib"
3236 LIBSUF=".a"
3237 FULLNAME='$(NAME)$(BUILDSUF)'
3238 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3239 SLIBPREF="lib"
3240 SLIBSUF=".so"
3241 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3242 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3243 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3244 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3245 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3246 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3247 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3248
3249 asflags_filter=echo
3250 cflags_filter=echo
3251 ldflags_filter=echo
3252
3253 AS_C='-c'
3254 AS_O='-o $@'
3255 CC_C='-c'
3256 CC_E='-E -o $@'
3257 CC_O='-o $@'
3258 CXX_C='-c'
3259 CXX_O='-o $@'
3260 OBJCC_C='-c'
3261 OBJCC_E='-E -o $@'
3262 OBJCC_O='-o $@'
3263 LD_O='-o $@'
3264 LD_LIB='-l%'
3265 LD_PATH='-L'
3266 HOSTCC_C='-c'
3267 HOSTCC_E='-E -o $@'
3268 HOSTCC_O='-o $@'
3269 HOSTLD_O='-o $@'
3270
3271 host_libs='-lm'
3272 host_cflags_filter=echo
3273 host_ldflags_filter=echo
3274
3275 target_path='$(CURDIR)'
3276
3277 # since the object filename is not given with the -MM flag, the compiler
3278 # is only able to print the basename, and we must add the path ourselves
3279 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3280 DEPFLAGS='-MM'
3281
3282 # find source path
3283 if test -f configure; then
3284     source_path=.
3285 else
3286     source_path=$(cd $(dirname "$0"); pwd)
3287     case "$source_path" in
3288         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3289     esac
3290     test -e "$source_path/config.h" &&
3291         die "Out of tree builds are impossible with config.h in source dir."
3292 fi
3293
3294 for v in "$@"; do
3295     r=${v#*=}
3296     l=${v%"$r"}
3297     r=$(sh_quote "$r")
3298     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3299 done
3300
3301 find_things(){
3302     thing=$1
3303     pattern=$2
3304     file=$source_path/$3
3305     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3306 }
3307
3308 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3309 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3310 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3311 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3312 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3313 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3314 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3315 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3316 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3317
3318 find_things_extern(){
3319     thing=$1
3320     pattern=$2
3321     file=$source_path/$3
3322     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3323 }
3324
3325 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3326 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3327
3328 ALL_COMPONENTS="
3329     $BSF_LIST
3330     $DECODER_LIST
3331     $DEMUXER_LIST
3332     $ENCODER_LIST
3333     $FILTER_LIST
3334     $HWACCEL_LIST
3335     $INDEV_LIST
3336     $MUXER_LIST
3337     $OUTDEV_LIST
3338     $PARSER_LIST
3339     $PROTOCOL_LIST
3340 "
3341
3342 for n in $COMPONENT_LIST; do
3343     v=$(toupper ${n%s})_LIST
3344     eval enable \$$v
3345     eval ${n}_if_any="\$$v"
3346 done
3347
3348 enable $ARCH_EXT_LIST
3349
3350 die_unknown(){
3351     echo "Unknown option \"$1\"."
3352     echo "See $0 --help for available options."
3353     exit 1
3354 }
3355
3356 print_in_columns() {
3357     cols=$(expr $ncols / 24)
3358     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3359 }
3360
3361 show_list() {
3362     suffix=_$1
3363     shift
3364     echo $* | sed s/$suffix//g | print_in_columns
3365     exit 0
3366 }
3367
3368 rand_list(){
3369     IFS=', '
3370     set -- $*
3371     unset IFS
3372     for thing; do
3373         comp=${thing%:*}
3374         prob=${thing#$comp}
3375         prob=${prob#:}
3376         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3377         echo "prob ${prob:-0.5}"
3378         printf '%s\n' $comp
3379     done
3380 }
3381
3382 do_random(){
3383     action=$1
3384     shift
3385     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3386     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3387 }
3388
3389 for opt do
3390     optval="${opt#*=}"
3391     case "$opt" in
3392         --extra-ldflags=*)
3393             add_ldflags $optval
3394         ;;
3395         --extra-ldexeflags=*)
3396             add_ldexeflags $optval
3397         ;;
3398         --extra-ldlibflags=*)
3399             add_ldlibflags $optval
3400         ;;
3401         --extra-libs=*)
3402             add_extralibs $optval
3403         ;;
3404         --disable-devices)
3405             disable $INDEV_LIST $OUTDEV_LIST
3406         ;;
3407         --enable-debug=*)
3408             debuglevel="$optval"
3409         ;;
3410         --disable-programs)
3411             disable $PROGRAM_LIST
3412         ;;
3413         --disable-everything)
3414             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3415         ;;
3416         --disable-all)
3417             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3418             disable $LIBRARY_LIST $PROGRAM_LIST doc
3419             enable avutil
3420         ;;
3421         --enable-random|--disable-random)
3422             action=${opt%%-random}
3423             do_random ${action#--} $COMPONENT_LIST
3424         ;;
3425         --enable-random=*|--disable-random=*)
3426             action=${opt%%-random=*}
3427             do_random ${action#--} $optval
3428         ;;
3429         --enable-*=*|--disable-*=*)
3430             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3431             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3432             eval list=\$$(toupper $thing)_LIST
3433             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3434             list=$(filter "$name" $list)
3435             [ "$list" = "" ] && warn "Option $opt did not match anything"
3436             $action $list
3437         ;;
3438         --enable-?*|--disable-?*)
3439             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3440             if is_in $option $COMPONENT_LIST; then
3441                 test $action = disable && action=unset
3442                 eval $action \$$(toupper ${option%s})_LIST
3443             elif is_in $option $CMDLINE_SELECT; then
3444                 $action $option
3445             else
3446                 die_unknown $opt
3447             fi
3448         ;;
3449         --list-*)
3450             NAME="${opt#--list-}"
3451             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3452             NAME=${NAME%s}
3453             eval show_list $NAME \$$(toupper $NAME)_LIST
3454         ;;
3455         --help|-h) show_help
3456         ;;
3457         --fatal-warnings) enable fatal_warnings
3458         ;;
3459         *)
3460             optname="${opt%%=*}"
3461             optname="${optname#--}"
3462             optname=$(echo "$optname" | sed 's/-/_/g')
3463             if is_in $optname $CMDLINE_SET; then
3464                 eval $optname='$optval'
3465             elif is_in $optname $CMDLINE_APPEND; then
3466                 append $optname "$optval"
3467             else
3468                 die_unknown $opt
3469             fi
3470         ;;
3471     esac
3472 done
3473
3474 for e in $env; do
3475     eval "export $e"
3476 done
3477
3478 disabled logging && logfile=/dev/null
3479
3480 # Disable all the library-specific components if the library itself
3481 # is disabled, see AVCODEC_LIST and following _LIST variables.
3482
3483 disable_components(){
3484     disabled ${1} && disable $(
3485         eval components="\$$(toupper ${1})_COMPONENTS"
3486         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3487     )
3488 }
3489
3490 map 'disable_components $v' $LIBRARY_LIST
3491
3492 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3493 set >> $logfile
3494
3495 test -n "$valgrind" && toolchain="valgrind-memcheck"
3496
3497 case "$toolchain" in
3498     *-asan)
3499         cc_default="${toolchain%-asan}"
3500         add_cflags  -fsanitize=address
3501         add_ldflags -fsanitize=address
3502     ;;
3503     *-msan)
3504         cc_default="${toolchain%-msan}"
3505         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3506         add_ldflags -fsanitize=memory
3507     ;;
3508     *-tsan)
3509         cc_default="${toolchain%-tsan}"
3510         add_cflags  -fsanitize=thread -pie
3511         add_ldflags -fsanitize=thread -pie
3512         case "$toolchain" in
3513             gcc-tsan)
3514                 add_cflags  -fPIC
3515                 add_ldflags -fPIC
3516                 ;;
3517         esac
3518     ;;
3519     *-usan)
3520         cc_default="${toolchain%-usan}"
3521         add_cflags  -fsanitize=undefined
3522         add_ldflags -fsanitize=undefined
3523     ;;
3524     valgrind-*)
3525         target_exec_default="valgrind"
3526         case "$toolchain" in
3527             valgrind-massif)
3528                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3529                 ;;
3530             valgrind-memcheck)
3531                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3532                 ;;
3533         esac
3534     ;;
3535     msvc)
3536         # Check whether the current MSVC version needs the C99 converter.
3537         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3538         # support enough of C99 to build ffmpeg. Default to the new
3539         # behaviour if the regexp was unable to match anything, since this
3540         # successfully parses the version number of existing supported
3541         # versions that require the converter (MSVC 2010 and 2012).
3542         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3543         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3544             cc_default="cl"
3545         else
3546             cc_default="c99wrap cl"
3547         fi
3548         ld_default="$source_path/compat/windows/mslink"
3549         nm_default="dumpbin -symbols"
3550         ar_default="lib"
3551         case "$arch" in
3552         arm*)
3553             as_default="armasm"
3554             ;;
3555         esac
3556         target_os_default="win32"
3557         # Use a relative path for TMPDIR. This makes sure all the
3558         # ffconf temp files are written with a relative path, avoiding
3559         # issues with msys/win32 path conversion for MSVC parameters
3560         # such as -Fo<file> or -out:<file>.
3561         TMPDIR=.
3562     ;;
3563     icl)
3564         cc_default="icl"
3565         ld_default="xilink"
3566         nm_default="dumpbin -symbols"
3567         ar_default="xilib"
3568         target_os_default="win32"
3569         TMPDIR=.
3570     ;;
3571     gcov)
3572         add_cflags  -fprofile-arcs -ftest-coverage
3573         add_ldflags -fprofile-arcs -ftest-coverage
3574     ;;
3575     llvm-cov)
3576         add_cflags -fprofile-arcs -ftest-coverage
3577         add_ldflags --coverage
3578     ;;
3579     hardened)
3580         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3581         add_cflags   -fno-strict-overflow -fstack-protector-all
3582         add_ldflags  -Wl,-z,relro -Wl,-z,now
3583         add_cflags   -fPIE
3584         add_ldexeflags -fPIE -pie
3585     ;;
3586     ?*)
3587         die "Unknown toolchain $toolchain"
3588     ;;
3589 esac
3590
3591 test -n "$cross_prefix" && enable cross_compile
3592
3593 if enabled cross_compile; then
3594     test -n "$arch" && test -n "$target_os" ||
3595         die "Must specify target arch and OS when cross-compiling"
3596 fi
3597
3598 ar_default="${cross_prefix}${ar_default}"
3599 cc_default="${cross_prefix}${cc_default}"
3600 cxx_default="${cross_prefix}${cxx_default}"
3601 nm_default="${cross_prefix}${nm_default}"
3602 pkg_config_default="${cross_prefix}${pkg_config_default}"
3603 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3604     ranlib_default="${cross_prefix}${ranlib_default} -D"
3605 else
3606     ranlib_default="${cross_prefix}${ranlib_default}"
3607 fi
3608 strip_default="${cross_prefix}${strip_default}"
3609 windres_default="${cross_prefix}${windres_default}"
3610
3611 sysinclude_default="${sysroot}/usr/include"
3612
3613 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3614     target_exec target_os yasmexe
3615 enabled cross_compile || host_cc_default=$cc
3616 set_default host_cc
3617
3618 pkg_config_fail_message=""
3619 if ! $pkg_config --version >/dev/null 2>&1; then
3620     warn "$pkg_config not found, library detection may fail."
3621     pkg_config=false
3622 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3623     pkg_config_fail_message="
3624 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3625 fi
3626
3627 if test $doxygen != $doxygen_default && \
3628   ! $doxygen --version >/dev/null 2>&1; then
3629     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3630 fi
3631
3632 exesuf() {
3633     case $1 in
3634         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3635     esac
3636 }
3637
3638 EXESUF=$(exesuf $target_os)
3639 HOSTEXESUF=$(exesuf $host_os)
3640
3641 # set temporary file name
3642 : ${TMPDIR:=$TEMPDIR}
3643 : ${TMPDIR:=$TMP}
3644 : ${TMPDIR:=/tmp}
3645
3646 if [ -n "$tempprefix" ] ; then
3647     mktemp(){
3648         echo $tempprefix.${HOSTNAME}.${UID}
3649     }
3650 elif ! check_cmd mktemp -u XXXXXX; then
3651     # simple replacement for missing mktemp
3652     # NOT SAFE FOR GENERAL USE
3653     mktemp(){
3654         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3655     }
3656 fi
3657
3658 tmpfile(){
3659     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3660         (set -C; exec > $tmp) 2>/dev/null ||
3661         die "Unable to create temporary file in $TMPDIR."
3662     append TMPFILES $tmp
3663     eval $1=$tmp
3664 }
3665
3666 trap 'rm -f -- $TMPFILES' EXIT
3667
3668 tmpfile TMPASM .asm
3669 tmpfile TMPC   .c
3670 tmpfile TMPCPP .cpp
3671 tmpfile TMPE   $EXESUF
3672 tmpfile TMPH   .h
3673 tmpfile TMPM   .m
3674 tmpfile TMPO   .o
3675 tmpfile TMPS   .S
3676 tmpfile TMPSH  .sh
3677 tmpfile TMPV   .ver
3678
3679 unset -f mktemp
3680
3681 chmod +x $TMPE
3682
3683 # make sure we can execute files in $TMPDIR
3684 cat > $TMPSH 2>> $logfile <<EOF
3685 #! /bin/sh
3686 EOF
3687 chmod +x $TMPSH >> $logfile 2>&1
3688 if ! $TMPSH >> $logfile 2>&1; then
3689     cat <<EOF
3690 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3691 variable to another directory and make sure that it is not mounted noexec.
3692 EOF
3693     die "Sanity test failed."
3694 fi
3695
3696 armasm_flags(){
3697     for flag; do
3698         case $flag in
3699             # Filter out MSVC cl.exe options from cflags that shouldn't
3700             # be passed to gas-preprocessor
3701             -M[TD]*)                                            ;;
3702             *)                  echo $flag                      ;;
3703         esac
3704    done
3705 }
3706
3707 ccc_flags(){
3708     for flag; do
3709         case $flag in
3710             -std=c99)           echo -c99                       ;;
3711             -mcpu=*)            echo -arch ${flag#*=}           ;;
3712             -mieee)             echo -ieee                      ;;
3713             -O*|-fast)          echo $flag                      ;;
3714             -fno-math-errno)    echo -assume nomath_errno       ;;
3715             -g)                 echo -g3                        ;;
3716             -Wall)              echo -msg_enable level2         ;;
3717             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3718             -Wl,*)              echo $flag                      ;;
3719             -f*|-W*)                                            ;;
3720             *)                  echo $flag                      ;;
3721         esac
3722    done
3723 }
3724
3725 cparser_flags(){
3726     for flag; do
3727         case $flag in
3728             -Wno-switch)             echo -Wno-switch-enum ;;
3729             -Wno-format-zero-length) ;;
3730             -Wdisabled-optimization) ;;
3731             -Wno-pointer-sign)       echo -Wno-other ;;
3732             *)                       echo $flag ;;
3733         esac
3734     done
3735 }
3736
3737 msvc_common_flags(){
3738     for flag; do
3739         case $flag in
3740             # In addition to specifying certain flags under the compiler
3741             # specific filters, they must be specified here as well or else the
3742             # generic catch all at the bottom will print the original flag.
3743             -Wall)                ;;
3744             -std=c99)             ;;
3745             # Common flags
3746             -fomit-frame-pointer) ;;
3747             -g)                   echo -Z7 ;;
3748             -fno-math-errno)      ;;
3749             -fno-common)          ;;
3750             -fno-signed-zeros)    ;;
3751             -fPIC)                ;;
3752             -mthumb)              ;;
3753             -march=*)             ;;
3754             -lz)                  echo zlib.lib ;;
3755             -lavifil32)           echo vfw32.lib ;;
3756             -lavicap32)           echo vfw32.lib user32.lib ;;
3757             -lx264)               echo libx264.lib ;;
3758             -l*)                  echo ${flag#-l}.lib ;;
3759             -LARGEADDRESSAWARE)   echo $flag ;;
3760             -L*)                  echo -libpath:${flag#-L} ;;
3761             *)                    echo $flag ;;
3762         esac
3763     done
3764 }
3765
3766 msvc_flags(){
3767     msvc_common_flags "$@"
3768     for flag; do
3769         case $flag in
3770             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3771                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3772                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3773                                        -wd4307 \
3774                                        -wd4273 -wd4554 -wd4701 ;;
3775         esac
3776     done
3777 }
3778
3779 icl_flags(){
3780     msvc_common_flags "$@"
3781     for flag; do
3782         case $flag in
3783             # Despite what Intel's documentation says -Wall, which is supported
3784             # on Windows, does enable remarks so disable them here.
3785             -Wall)                echo $flag -Qdiag-disable:remark ;;
3786             -std=c99)             echo -Qstd=c99 ;;
3787             -flto)                echo -ipo ;;
3788         esac
3789     done
3790 }
3791
3792 icc_flags(){
3793     for flag; do
3794         case $flag in
3795             -flto)                echo -ipo ;;
3796             *)                    echo $flag ;;
3797         esac
3798     done
3799 }
3800
3801 pgi_flags(){
3802     for flag; do
3803         case $flag in
3804             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3805             -fomit-frame-pointer) echo -Mnoframe ;;
3806             -g)                   echo -gopt ;;
3807             *)                    echo $flag ;;
3808         esac
3809     done
3810 }
3811
3812 suncc_flags(){
3813     for flag; do
3814         case $flag in
3815             -march=*|-mcpu=*)
3816                 case "${flag#*=}" in
3817                     native)                   echo -xtarget=native       ;;
3818                     v9|niagara)               echo -xarch=sparc          ;;
3819                     ultrasparc)               echo -xarch=sparcvis       ;;
3820                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3821                     i586|pentium)             echo -xchip=pentium        ;;
3822                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3823                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3824                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3825                     pentium4*)          echo -xtarget=pentium4           ;;
3826                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3827                     *-sse3)             echo -xarch=sse3                 ;;
3828                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3829                     bonnell)                   echo -xarch=ssse3         ;;
3830                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3831                     westmere)                  echo -xtarget=westmere    ;;
3832                     silvermont)                echo -xarch=sse4_2        ;;
3833                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3834                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3835                                                echo -xarch=avx           ;;
3836                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3837                     btver1)                    echo -xarch=amdsse4a      ;;
3838                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3839                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3840                     k8|opteron|athlon64|athlon-fx)
3841                                                echo -xarch=sse2a         ;;
3842                     athlon*)                   echo -xarch=pentium_proa  ;;
3843                 esac
3844                 ;;
3845             -std=c99)             echo -xc99              ;;
3846             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3847             -fPIC)                echo -KPIC -xcode=pic32 ;;
3848             -W*,*)                echo $flag              ;;
3849             -f*-*|-W*|-mimpure-text)                      ;;
3850             -shared)              echo -G                 ;;
3851             *)                    echo $flag              ;;
3852         esac
3853     done
3854 }
3855
3856 tms470_flags(){
3857     for flag; do
3858         case $flag in
3859             -march=*|-mcpu=*)
3860                 case "${flag#*=}" in
3861                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3862                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3863                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3864                     armv6*|arm11*)          echo -mv=6   ;;
3865                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3866                                             echo -mv=5e  ;;
3867                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3868                 esac
3869                 ;;
3870             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3871             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3872             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3873             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3874             -msoft-float)   echo --float_support=vfplib       ;;
3875             -O[0-3]|-mf=*)  echo $flag                        ;;
3876             -g)             echo -g -mn                       ;;
3877             -pds=*)         echo $flag                        ;;
3878             -D*|-I*)        echo $flag                        ;;
3879             --gcc|--abi=*)  echo $flag                        ;;
3880             -me)            echo $flag                        ;;
3881         esac
3882     done
3883 }
3884
3885 probe_cc(){
3886     pfx=$1
3887     _cc=$2
3888     first=$3
3889
3890     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3891     unset _ld_o _ldflags _ld_lib _ld_path
3892     unset _depflags _DEPCMD _DEPFLAGS
3893     _flags_filter=echo
3894
3895     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3896         true # no-op to avoid reading stdin in following checks
3897     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3898         _type=llvm_gcc
3899         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3900         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3901         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3902         _cflags_speed='-O3'
3903         _cflags_size='-Os'
3904     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3905         _type=gcc
3906         gcc_version=$($_cc --version | head -n1)
3907         gcc_basever=$($_cc -dumpversion)
3908         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3909         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3910         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3911         case $gcc_basever in
3912             2) ;;
3913             2.*) ;;
3914             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3915         esac
3916         if [ "$first" = true ]; then
3917             case $gcc_basever in
3918                 4.2*)
3919                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3920             esac
3921         fi
3922         _cflags_speed='-O3'
3923         _cflags_size='-Os'
3924     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3925         _type=icc
3926         _ident=$($_cc --version | head -n1)
3927         _depflags='-MMD'
3928         _cflags_speed='-O3'
3929         _cflags_size='-Os'
3930         _cflags_noopt='-O1'
3931         _flags_filter=icc_flags
3932     elif $_cc -v 2>&1 | grep -q xlc; then
3933         _type=xlc
3934         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3935         _cflags_speed='-O5'
3936         _cflags_size='-O5 -qcompact'
3937     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3938         _type=ccc
3939         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3940         _DEPFLAGS='-M'
3941         _cflags_speed='-fast'
3942         _cflags_size='-O1'
3943         _flags_filter=ccc_flags
3944     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3945         test -d "$sysroot" || die "No valid sysroot specified."
3946         _type=armcc
3947         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3948         armcc_conf="$PWD/armcc.conf"
3949         $_cc --arm_linux_configure                 \
3950              --arm_linux_config_file="$armcc_conf" \
3951              --configure_sysroot="$sysroot"        \
3952              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3953              die "Error creating armcc configuration file."
3954         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3955         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3956         as_default="${cross_prefix}gcc"
3957         _depflags='-MMD'
3958         _cflags_speed='-O3'
3959         _cflags_size='-Os'
3960     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3961         _type=tms470
3962         _ident=$($_cc -version | head -n1 | tr -s ' ')
3963         _flags='--gcc --abi=eabi -me'
3964         _cc_e='-ppl -fe=$@'
3965         _cc_o='-fe=$@'
3966         _depflags='-ppa -ppd=$(@:.o=.d)'
3967         _cflags_speed='-O3 -mf=5'
3968         _cflags_size='-O3 -mf=2'
3969         _flags_filter=tms470_flags
3970     elif $_cc -v 2>&1 | grep -q clang; then
3971         _type=clang
3972         _ident=$($_cc --version 2>/dev/null | head -n1)
3973         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3974         _cflags_speed='-O3'
3975         _cflags_size='-Os'
3976     elif $_cc -V 2>&1 | grep -q Sun; then
3977         _type=suncc
3978         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3979         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3980         _DEPFLAGS='-xM1 -xc99'
3981         _ldflags='-std=c99'
3982         _cflags_speed='-O5'
3983         _cflags_size='-O5 -xspace'
3984         _flags_filter=suncc_flags
3985     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3986         _type=pathscale
3987         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3988         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3989         _cflags_speed='-O2'
3990         _cflags_size='-Os'
3991         _flags_filter='filter_out -Wdisabled-optimization'
3992     elif $_cc -v 2>&1 | grep -q Open64; then
3993         _type=open64
3994         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3995         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3996         _cflags_speed='-O2'
3997         _cflags_size='-Os'
3998         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3999     elif $_cc -V 2>&1 | grep -q Portland; then
4000         _type=pgi
4001         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4002         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4003         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4004         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4005         _cflags_noopt="-O"
4006         _flags_filter=pgi_flags
4007     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4008         _type=armasm
4009         _ident=$($_cc | head -n1)
4010         # 4509: "This form of conditional instruction is deprecated"
4011         _flags="-nologo -ignore 4509"
4012         _flags_filter=armasm_flags
4013     elif $_cc 2>&1 | grep -q Intel; then
4014         _type=icl
4015         _ident=$($_cc 2>&1 | head -n1)
4016         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4017         # Not only is O3 broken on 13.x+ but it is slower on all previous
4018         # versions (tested) as well.
4019         _cflags_speed="-O2"
4020         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4021         if $_cc 2>&1 | grep -q Linker; then
4022             _ld_o='-out:$@'
4023         else
4024             _ld_o='-Fe$@'
4025         fi
4026         _cc_o='-Fo$@'
4027         _cc_e='-P'
4028         _flags_filter=icl_flags
4029         _ld_lib='lib%.a'
4030         _ld_path='-libpath:'
4031         # -Qdiag-error to make icl error when seeing certain unknown arguments
4032         _flags='-nologo -Qdiag-error:4044,10157'
4033         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4034         # with MSVC which enables it by default.
4035         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4036         disable stripping
4037     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4038         _type=msvc
4039         _ident=$($_cc 2>&1 | head -n1)
4040         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4041         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4042         _cflags_speed="-O2"
4043         _cflags_size="-O1"
4044         if $_cc -nologo- 2>&1 | grep -q Linker; then
4045             _ld_o='-out:$@'
4046         else
4047             _ld_o='-Fe$@'
4048         fi
4049         _cc_o='-Fo$@'
4050         _cc_e='-P -Fi$@'
4051         _flags_filter=msvc_flags
4052         _ld_lib='lib%.a'
4053         _ld_path='-libpath:'
4054         _flags='-nologo'
4055         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4056         disable stripping
4057     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4058         _type=cparser
4059         _ident=$($_cc --version | head -n1)
4060         _depflags='-MMD'
4061         _cflags_speed='-O4'
4062         _cflags_size='-O2'
4063         _flags_filter=cparser_flags
4064     fi
4065
4066     eval ${pfx}_type=\$_type
4067     eval ${pfx}_ident=\$_ident
4068 }
4069
4070 set_ccvars(){
4071     eval ${1}_C=\${_cc_c-\${${1}_C}}
4072     eval ${1}_E=\${_cc_e-\${${1}_E}}
4073     eval ${1}_O=\${_cc_o-\${${1}_O}}
4074
4075     if [ -n "$_depflags" ]; then
4076         eval ${1}_DEPFLAGS=\$_depflags
4077     else
4078         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4079         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4080         eval DEP${1}FLAGS=\$_flags
4081     fi
4082 }
4083
4084 probe_cc cc "$cc" "true"
4085 cflags_filter=$_flags_filter
4086 cflags_speed=$_cflags_speed
4087 cflags_size=$_cflags_size
4088 cflags_noopt=$_cflags_noopt
4089 add_cflags $_flags $_cflags
4090 cc_ldflags=$_ldflags
4091 set_ccvars CC
4092
4093 probe_cc hostcc "$host_cc"
4094 host_cflags_filter=$_flags_filter
4095 add_host_cflags  $_flags $_cflags
4096 set_ccvars HOSTCC
4097
4098 test -n "$cc_type" && enable $cc_type ||
4099     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4100
4101 : ${as_default:=$cc}
4102 : ${objcc_default:=$cc}
4103 : ${dep_cc_default:=$cc}
4104 : ${ld_default:=$cc}
4105 : ${host_ld_default:=$host_cc}
4106 set_default ar as objcc dep_cc ld ln_s host_ld windres
4107
4108 probe_cc as "$as"
4109 asflags_filter=$_flags_filter
4110 add_asflags $_flags $_cflags
4111 set_ccvars AS
4112
4113 probe_cc objcc "$objcc"
4114 objcflags_filter=$_flags_filter
4115 add_objcflags $_flags $_cflags
4116 set_ccvars OBJC
4117
4118 probe_cc ld "$ld"
4119 ldflags_filter=$_flags_filter
4120 add_ldflags $_flags $_ldflags
4121 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4122 LD_O=${_ld_o-$LD_O}
4123 LD_LIB=${_ld_lib-$LD_LIB}
4124 LD_PATH=${_ld_path-$LD_PATH}
4125
4126 probe_cc hostld "$host_ld"
4127 host_ldflags_filter=$_flags_filter
4128 add_host_ldflags $_flags $_ldflags
4129 HOSTLD_O=${_ld_o-$HOSTLD_O}
4130
4131 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4132     probe_cc depcc "$dep_cc"
4133     CCDEP=${_DEPCMD:-$DEPCMD}
4134     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4135     DEPCCFLAGS=$_flags
4136 fi
4137
4138 if $ar 2>&1 | grep -q Microsoft; then
4139     arflags="-nologo"
4140     ar_o='-out:$@'
4141 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4142     arflags="rq"
4143     ar_o='$@'
4144 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4145     arflags='-Xany -r -c'
4146     ar_o='$@'
4147 elif $ar 2>&1 | grep -q "\[D\] "; then
4148     arflags="rcD"
4149     ar_o='$@'
4150 else
4151     arflags="rc"
4152     ar_o='$@'
4153 fi
4154
4155 add_cflags $extra_cflags
4156 add_cxxflags $extra_cxxflags
4157 add_objcflags $extra_objcflags
4158 add_asflags $extra_cflags
4159
4160 if test -n "$sysroot"; then
4161     case "$cc_type" in
4162         gcc|llvm_gcc|clang)
4163             add_cppflags --sysroot="$sysroot"
4164             add_ldflags --sysroot="$sysroot"
4165 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4166             add_cppflags -isysroot "$sysroot"
4167             add_ldflags -isysroot "$sysroot"
4168         ;;
4169         tms470)
4170             add_cppflags -I"$sysinclude"
4171             add_ldflags  --sysroot="$sysroot"
4172         ;;
4173     esac
4174 fi
4175
4176 if test "$cpu" = host; then
4177     enabled cross_compile &&
4178         die "--cpu=host makes no sense when cross-compiling."
4179
4180     case "$cc_type" in
4181         gcc|llvm_gcc)
4182             check_native(){
4183                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4184                 sed -n "/cc1.*$1=/{
4185                             s/.*$1=\\([^ ]*\\).*/\\1/
4186                             p
4187                             q
4188                         }" $TMPE
4189             }
4190             cpu=$(check_native -march || check_native -mcpu)
4191         ;;
4192         clang)
4193             check_native(){
4194                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4195                 sed -n "/cc1.*-target-cpu /{
4196                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4197                             p
4198                             q
4199                         }" $TMPE
4200             }
4201             cpu=$(check_native -march)
4202         ;;
4203     esac
4204
4205     test "${cpu:-host}" = host &&
4206         die "--cpu=host not supported with compiler $cc"
4207 fi
4208
4209 # Deal with common $arch aliases
4210 case "$arch" in
4211     aarch64|arm64)
4212         arch="aarch64"
4213     ;;
4214     arm*|iPad*|iPhone*)
4215         arch="arm"
4216     ;;
4217     mips*|IP*)
4218         case "$arch" in
4219         *el)
4220             add_cppflags -EL
4221             add_ldflags -EL
4222         ;;
4223         *eb)
4224             add_cppflags -EB
4225             add_ldflags -EB
4226         ;;
4227         esac
4228         arch="mips"
4229     ;;
4230     parisc*|hppa*)
4231         arch="parisc"
4232     ;;
4233     "Power Macintosh"|ppc*|powerpc*)
4234         arch="ppc"
4235     ;;
4236     s390|s390x)
4237         arch="s390"
4238     ;;
4239     sh4|sh)
4240         arch="sh4"
4241     ;;
4242     sun4*|sparc*)
4243         arch="sparc"
4244     ;;
4245     tilegx|tile-gx)
4246         arch="tilegx"
4247     ;;
4248     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4249         arch="x86"
4250     ;;
4251 esac
4252
4253 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4254 enable $arch
4255
4256 # Add processor-specific flags
4257 if enabled aarch64; then
4258
4259     case $cpu in
4260         armv*)
4261             cpuflags="-march=$cpu"
4262         ;;
4263         *)
4264             cpuflags="-mcpu=$cpu"
4265         ;;
4266     esac
4267
4268 elif enabled alpha; then
4269
4270     cpuflags="-mcpu=$cpu"
4271
4272 elif enabled arm; then
4273
4274     check_arm_arch() {
4275         check_cpp_condition stddef.h \
4276             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4277             $cpuflags
4278     }
4279
4280     probe_arm_arch() {
4281         if   check_arm_arch 4;        then echo armv4
4282         elif check_arm_arch 4T;       then echo armv4t
4283         elif check_arm_arch 5;        then echo armv5
4284         elif check_arm_arch 5E;       then echo armv5e
4285         elif check_arm_arch 5T;       then echo armv5t
4286         elif check_arm_arch 5TE;      then echo armv5te
4287         elif check_arm_arch 5TEJ;     then echo armv5te
4288         elif check_arm_arch 6;        then echo armv6
4289         elif check_arm_arch 6J;       then echo armv6j
4290         elif check_arm_arch 6K;       then echo armv6k
4291         elif check_arm_arch 6Z;       then echo armv6z
4292         elif check_arm_arch 6ZK;      then echo armv6zk
4293         elif check_arm_arch 6T2;      then echo armv6t2
4294         elif check_arm_arch 7;        then echo armv7
4295         elif check_arm_arch 7A  7_A;  then echo armv7-a
4296         elif check_arm_arch 7S;       then echo armv7-a
4297         elif check_arm_arch 7R  7_R;  then echo armv7-r
4298         elif check_arm_arch 7M  7_M;  then echo armv7-m
4299         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4300         elif check_arm_arch 8A  8_A;  then echo armv8-a
4301         fi
4302     }
4303
4304     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4305
4306     case $cpu in
4307         armv*)
4308             cpuflags="-march=$cpu"
4309             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4310         ;;
4311         *)
4312             cpuflags="-mcpu=$cpu"
4313             case $cpu in
4314                 cortex-a*)                               subarch=armv7a  ;;
4315                 cortex-r*)                               subarch=armv7r  ;;
4316                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4317                 arm11*)                                  subarch=armv6   ;;
4318                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4319                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4320                 *)                             subarch=$(probe_arm_arch) ;;
4321             esac
4322         ;;
4323     esac
4324
4325     case "$subarch" in
4326         armv5t*)    enable fast_clz                ;;
4327         armv[6-8]*)
4328             enable fast_clz
4329             disabled fast_unaligned || enable fast_unaligned
4330             ;;
4331     esac
4332
4333 elif enabled avr32; then
4334
4335     case $cpu in
4336         ap7[02]0[0-2])
4337             subarch="avr32_ap"
4338             cpuflags="-mpart=$cpu"
4339         ;;
4340         ap)
4341             subarch="avr32_ap"
4342             cpuflags="-march=$cpu"
4343         ;;
4344         uc3[ab]*)
4345             subarch="avr32_uc"
4346             cpuflags="-mcpu=$cpu"
4347         ;;
4348         uc)
4349             subarch="avr32_uc"
4350             cpuflags="-march=$cpu"
4351         ;;
4352     esac
4353
4354 elif enabled bfin; then
4355
4356     cpuflags="-mcpu=$cpu"
4357
4358 elif enabled mips; then
4359
4360     cpuflags="-march=$cpu"
4361
4362     if [ "$cpu" != "generic" ]; then
4363         disable mips32r2
4364         disable mips32r5
4365         disable mips64r2
4366         disable mips32r6
4367         disable mips64r6
4368         disable loongson2
4369         disable loongson3
4370
4371         case $cpu in
4372             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4373                 enable mips32r2
4374                 disable msa
4375             ;;
4376             p5600|i6400|p6600)
4377                 disable mipsdsp
4378                 disable mipsdspr2
4379             ;;
4380             loongson*)
4381                 enable loongson2
4382                 enable loongson3
4383                 enable local_aligned_8 local_aligned_16 local_aligned_32
4384                 enable simd_align_16
4385                 enable fast_64bit
4386                 enable fast_clz
4387                 enable fast_cmov
4388                 enable fast_unaligned
4389                 disable aligned_stack
4390                 disable mipsfpu
4391                 disable mipsdsp
4392                 disable mipsdspr2
4393                 case $cpu in
4394                     loongson3*)
4395                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4396                     ;;
4397                     loongson2e)
4398                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4399                     ;;
4400                     loongson2f)
4401                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4402                     ;;
4403                 esac
4404             ;;
4405             *)
4406                 # Unknown CPU. Disable everything.
4407                 warn "unknown CPU. Disabling all MIPS optimizations."
4408                 disable mipsfpu
4409                 disable mipsdsp
4410                 disable mipsdspr2
4411                 disable msa
4412                 disable mmi
4413             ;;
4414         esac
4415
4416         case $cpu in
4417             24kc)
4418                 disable mipsfpu
4419                 disable mipsdsp
4420                 disable mipsdspr2
4421             ;;
4422             24kf*)
4423                 disable mipsdsp
4424                 disable mipsdspr2
4425             ;;
4426             24kec|34kc|1004kc)
4427                 disable mipsfpu
4428                 disable mipsdspr2
4429             ;;
4430             24kef*|34kf*|1004kf*)
4431                 disable mipsdspr2
4432             ;;
4433             74kc)
4434                 disable mipsfpu
4435             ;;
4436             p5600)
4437                 enable mips32r5
4438                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4439             ;;
4440             i6400)
4441                 enable mips64r6
4442                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4443             ;;
4444             p6600)
4445                 enable mips64r6
4446                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4447             ;;
4448         esac
4449     else
4450         # We do not disable anything. Is up to the user to disable the unwanted features.
4451         warn 'generic cpu selected'
4452     fi
4453
4454 elif enabled ppc; then
4455
4456     disable ldbrx
4457
4458     case $(tolower $cpu) in
4459         601|ppc601|powerpc601)
4460             cpuflags="-mcpu=601"
4461             disable altivec
4462         ;;
4463         603*|ppc603*|powerpc603*)
4464             cpuflags="-mcpu=603"
4465             disable altivec
4466         ;;
4467         604*|ppc604*|powerpc604*)
4468             cpuflags="-mcpu=604"
4469             disable altivec
4470         ;;
4471         g3|75*|ppc75*|powerpc75*)
4472             cpuflags="-mcpu=750"
4473             disable altivec
4474         ;;
4475         g4|745*|ppc745*|powerpc745*)
4476             cpuflags="-mcpu=7450"
4477             disable vsx
4478         ;;
4479         74*|ppc74*|powerpc74*)
4480             cpuflags="-mcpu=7400"
4481             disable vsx
4482         ;;
4483         g5|970|ppc970|powerpc970)
4484             cpuflags="-mcpu=970"
4485             disable vsx
4486         ;;
4487         power[3-6]*)
4488             cpuflags="-mcpu=$cpu"
4489             disable vsx
4490         ;;
4491         power[7-8]*)
4492             cpuflags="-mcpu=$cpu"
4493         ;;
4494         cell)
4495             cpuflags="-mcpu=cell"
4496             enable ldbrx
4497             disable vsx
4498         ;;
4499         e500mc)
4500             cpuflags="-mcpu=e500mc"
4501             disable altivec
4502         ;;
4503         e500v2)
4504             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4505             disable altivec
4506             disable dcbzl
4507         ;;
4508         e500)
4509             cpuflags="-mcpu=8540 -mhard-float"
4510             disable altivec
4511             disable dcbzl
4512         ;;
4513     esac
4514
4515 elif enabled sparc; then
4516
4517     case $cpu in
4518         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4519             cpuflags="-mcpu=$cpu"
4520         ;;
4521         ultrasparc*|niagara[234])
4522             cpuflags="-mcpu=$cpu"
4523         ;;
4524     esac
4525
4526 elif enabled x86; then
4527
4528     case $cpu in
4529         i[345]86|pentium)
4530             cpuflags="-march=$cpu"
4531             disable i686
4532             disable mmx
4533         ;;
4534         # targets that do NOT support nopl and conditional mov (cmov)
4535         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4536             cpuflags="-march=$cpu"
4537             disable i686
4538         ;;
4539         # targets that do support nopl and conditional mov (cmov)
4540         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4541         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4542         |amdfam10|barcelona|b[dt]ver*|znver*)
4543             cpuflags="-march=$cpu"
4544             enable i686
4545             enable fast_cmov
4546         ;;
4547         # targets that do support conditional mov but on which it's slow
4548         pentium4|pentium4m|prescott|nocona)
4549             cpuflags="-march=$cpu"
4550             enable i686
4551             disable fast_cmov
4552         ;;
4553     esac
4554
4555 fi
4556
4557 if [ "$cpu" != generic ]; then
4558     add_cflags  $cpuflags
4559     add_asflags $cpuflags
4560     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4561 fi
4562
4563 # compiler sanity check
4564 check_exec <<EOF
4565 int main(void){ return 0; }
4566 EOF
4567 if test "$?" != 0; then
4568     echo "$cc is unable to create an executable file."
4569     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4570         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4571         echo "Only do this if you know what cross compiling means."
4572     fi
4573     die "C compiler test failed."
4574 fi
4575
4576 add_cppflags -D_ISOC99_SOURCE
4577 add_cxxflags -D__STDC_CONSTANT_MACROS
4578 add_cxxflags -std=c++98
4579 check_cflags -std=c99
4580 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4581 #include <stdlib.h>
4582 EOF
4583 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4584 #include <stdlib.h>
4585 EOF
4586
4587 add_host_cppflags -D_ISOC99_SOURCE
4588 check_host_cflags -std=c99
4589 check_host_cflags -Wall
4590 check_host_cflags -O3
4591
4592 check_64bit(){
4593     arch32=$1
4594     arch64=$2
4595     expr=$3
4596     check_code cc "" "int test[2*($expr) - 1]" &&
4597         subarch=$arch64 || subarch=$arch32
4598 }
4599
4600 case "$arch" in
4601     aarch64|alpha|ia64)
4602         spic=$shared
4603     ;;
4604     mips)
4605         check_64bit mips mips64 '_MIPS_SIM > 1'
4606         spic=$shared
4607     ;;
4608     parisc)
4609         check_64bit parisc parisc64 'sizeof(void *) > 4'
4610         spic=$shared
4611     ;;
4612     ppc)
4613         check_64bit ppc ppc64 'sizeof(void *) > 4'
4614         spic=$shared
4615     ;;
4616     s390)
4617         check_64bit s390 s390x 'sizeof(void *) > 4'
4618         spic=$shared
4619     ;;
4620     sparc)
4621         check_64bit sparc sparc64 'sizeof(void *) > 4'
4622         spic=$shared
4623     ;;
4624     x86)
4625         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4626         # Treat x32 as x64 for now. Note it also needs spic=$shared
4627         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4628             subarch=x86_64
4629         if test "$subarch" = "x86_64"; then
4630             spic=$shared
4631         fi
4632     ;;
4633     ppc)
4634         check_cc <<EOF && subarch="ppc64"
4635         int test[(int)sizeof(char*) - 7];
4636 EOF
4637     ;;
4638 esac
4639
4640 enable $subarch
4641 enabled spic && enable_weak pic
4642
4643 # OS specific
4644 case $target_os in
4645     aix)
4646         SHFLAGS=-shared
4647         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4648         enabled shared && add_ldflags -Wl,-brtl
4649         ;;
4650     android)
4651         disable symver
4652         enable section_data_rel_ro
4653         SLIB_INSTALL_NAME='$(SLIBNAME)'
4654         SLIB_INSTALL_LINKS=
4655         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4656         ;;
4657     haiku)
4658         prefix_default="/boot/common"
4659         network_extralibs="-lnetwork"
4660         host_libs=
4661         ;;
4662     sunos)
4663         SHFLAGS='-shared -Wl,-h,$$(@F)'
4664         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4665         network_extralibs="-lsocket -lnsl"
4666         add_cppflags -D__EXTENSIONS__
4667         # When using suncc to build, the Solaris linker will mark
4668         # an executable with each instruction set encountered by
4669         # the Solaris assembler.  As our libraries contain their own
4670         # guards for processor-specific code, instead suppress
4671         # generation of the HWCAPS ELF section on Solaris x86 only.
4672         enabled_all suncc x86 &&
4673             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4674             add_ldflags -Wl,-M,mapfile
4675         nm_default='nm -P -g'
4676         version_script='-M'
4677         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4678         ;;
4679     netbsd)
4680         disable symver
4681         oss_indev_extralibs="-lossaudio"
4682         oss_outdev_extralibs="-lossaudio"
4683         enabled gcc || check_ldflags -Wl,-zmuldefs
4684         ;;
4685     openbsd|bitrig)
4686         disable symver
4687         SHFLAGS='-shared'
4688         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4689         SLIB_INSTALL_LINKS=
4690         oss_indev_extralibs="-lossaudio"
4691         oss_outdev_extralibs="-lossaudio"
4692         ;;
4693     dragonfly)
4694         disable symver
4695         ;;
4696     freebsd)
4697         ;;
4698     bsd/os)
4699         add_extralibs -lpoll -lgnugetopt
4700         strip="strip -d"
4701         ;;
4702     darwin)
4703         enabled ppc && add_asflags -force_cpusubtype_ALL
4704         install_name_dir_default='$(SHLIBDIR)'
4705         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4706         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4707         strip="${strip} -x"
4708         add_ldflags -Wl,-dynamic,-search_paths_first
4709         SLIBSUF=".dylib"
4710         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4711         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4712         objformat="macho"
4713         enabled x86_64 && objformat="macho64"
4714         enabled_any pic shared x86_64 ||
4715             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4716         check_header dispatch/dispatch.h &&
4717             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4718         version_script='-exported_symbols_list'
4719         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4720         ;;
4721     msys*)
4722         die "Native MSYS builds are discouraged, please use the MINGW environment."
4723         ;;
4724     mingw32*|mingw64*)
4725         if test $target_os = "mingw32ce"; then
4726             disable network
4727         else
4728             target_os=mingw32
4729         fi
4730         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4731         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4732         LIBTARGET=i386
4733         if enabled x86_64; then
4734             LIBTARGET="i386:x86-64"
4735         elif enabled arm; then
4736             LIBTARGET=arm-wince
4737         fi
4738         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4739         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4740         shlibdir_default="$bindir_default"
4741         SLIBPREF=""
4742         SLIBSUF=".dll"
4743         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4744         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4745         dlltool="${cross_prefix}dlltool"
4746         if check_cmd lib.exe -list; then
4747             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4748             if enabled x86_64; then
4749                 LIBTARGET=x64
4750             fi
4751         elif check_cmd $dlltool --version; then
4752             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4753         fi
4754         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4755         SLIB_INSTALL_LINKS=
4756         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4757         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4758         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4759         objformat="win32"
4760         ranlib=:
4761         enable dos_paths
4762         check_ldflags -Wl,--nxcompat,--dynamicbase
4763         # Lets work around some stupidity in binutils.
4764         # ld will strip relocations from executables even though we need them
4765         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4766         # however ld then forgets what the entry point should be (oops) so we
4767         # have to manually (re)set it.
4768         if enabled x86_32; then
4769             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4770         elif enabled x86_64; then
4771             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4772             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4773             # Set image base >4GB for extra entropy with HEASLR
4774             add_ldexeflags -Wl,--image-base,0x140000000
4775             append SHFLAGS -Wl,--image-base,0x180000000
4776         fi
4777         ;;
4778     win32|win64)
4779         disable symver
4780         if enabled shared; then
4781             # Link to the import library instead of the normal static library
4782             # for shared libs.
4783             LD_LIB='%.lib'
4784             # Cannot build both shared and static libs with MSVC or icl.
4785             disable static
4786         fi
4787         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4788         shlibdir_default="$bindir_default"
4789         SLIBPREF=""
4790         SLIBSUF=".dll"
4791         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4792         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4793         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4794         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4795         SLIB_INSTALL_LINKS=
4796         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4797         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4798         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4799         objformat="win32"
4800         ranlib=:
4801         enable dos_paths
4802         ;;
4803     cygwin*)
4804         target_os=cygwin
4805         shlibdir_default="$bindir_default"
4806         SLIBPREF="cyg"
4807         SLIBSUF=".dll"
4808         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4809         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4810         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4811         SLIB_INSTALL_LINKS=
4812         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4813         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4814         objformat="win32"
4815         enable dos_paths
4816         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4817         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4818         ;;
4819     *-dos|freedos|opendos)
4820         network_extralibs="-lsocket"
4821         objformat="coff"
4822         enable dos_paths
4823         add_cppflags -U__STRICT_ANSI__
4824         ;;
4825     linux)
4826         enable dv1394
4827         enable section_data_rel_ro
4828         ;;
4829     irix*)
4830         target_os=irix
4831         ranlib="echo ignoring ranlib"
4832         ;;
4833     os/2*)
4834         strip="lxlite -CS"
4835         objformat="aout"
4836         add_cppflags -D_GNU_SOURCE
4837         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4838         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4839         LIBSUF="_s.a"
4840         SLIBPREF=""
4841         SLIBSUF=".dll"
4842         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4843         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4844         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4845             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4846             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4847             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4848             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4849         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4850             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4851         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4852         SLIB_INSTALL_LINKS=
4853         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4854         enable dos_paths
4855         enable_weak os2threads
4856         ;;
4857     gnu/kfreebsd)
4858         add_cppflags -D_BSD_SOURCE
4859         ;;
4860     gnu)
4861         ;;
4862     qnx)
4863         add_cppflags -D_QNX_SOURCE
4864         network_extralibs="-lsocket"
4865         ;;
4866     symbian)
4867         SLIBSUF=".dll"
4868         enable dos_paths
4869         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4870         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4871         add_ldflags -Wl,--target1-abs,--no-undefined \
4872                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4873                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4874         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4875                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4876                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4877         ;;
4878     osf1)
4879         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4880         ;;
4881     minix)
4882         ;;
4883     plan9)
4884         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4885                      -D_REENTRANT_SOURCE        \
4886                      -D_RESEARCH_SOURCE         \
4887                      -DFD_SETSIZE=96            \
4888                      -DHAVE_SOCK_OPTS
4889         add_compat strtod.o strtod=avpriv_strtod
4890         network_extralibs='-lbsd'
4891         exeobjs=compat/plan9/main.o
4892         disable ffserver
4893         cp_f='cp'
4894         ;;
4895     none)
4896         ;;
4897     *)
4898         die "Unknown OS '$target_os'."
4899         ;;
4900 esac
4901
4902 # test if creating links works
4903 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4904 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4905 mkdir "$link_dest"
4906 $ln_s "$link_dest" "$link_name"
4907 touch "$link_dest/test_file"
4908 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4909     # create link to source path
4910     [ -e src ] && rm src
4911     $ln_s "$source_path" src
4912     source_link=src
4913 else
4914     # creating directory links doesn't work
4915     # fall back to using the full source path
4916     source_link="$source_path"
4917 fi
4918 # cleanup
4919 rm -r "$link_dest"
4920 rm -r "$link_name"
4921
4922 # determine libc flavour
4923
4924 probe_libc(){
4925     pfx=$1
4926     pfx_no_=${pfx%_}
4927     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4928     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4929         eval ${pfx}libc_type=uclibc
4930         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4931     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4932         eval ${pfx}libc_type=glibc
4933         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4934     # MinGW headers can be installed on Cygwin, so check for newlib first.
4935     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4936         eval ${pfx}libc_type=newlib
4937         add_${pfx}cppflags -U__STRICT_ANSI__
4938     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4939     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4940         eval ${pfx}libc_type=mingw64
4941         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4942             add_compat msvcrt/snprintf.o
4943             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4944         fi
4945         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4946         eval test \$${pfx_no_}cc_type = "gcc" &&
4947             add_${pfx}cppflags -D__printf__=__gnu_printf__
4948     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4949          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4950         eval ${pfx}libc_type=mingw32
4951         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4952             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4953             die "ERROR: MinGW32 runtime version must be >= 3.15."
4954         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4955         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
4956             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4957         eval test \$${pfx_no_}cc_type = "gcc" &&
4958             add_${pfx}cppflags -D__printf__=__gnu_printf__
4959     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4960         eval ${pfx}libc_type=msvcrt
4961         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4962             if [ "$pfx" = host_ ]; then
4963                 add_host_cppflags -Dsnprintf=_snprintf
4964             else
4965                 add_compat strtod.o strtod=avpriv_strtod
4966                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4967                                              _snprintf=avpriv_snprintf  \
4968                                              vsnprintf=avpriv_vsnprintf
4969             fi
4970         fi
4971         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4972         # 0x601 by default unless something else is set by the user.
4973         # This can easily lead to us detecting functions only present
4974         # in such new versions and producing binaries requiring windows 7.0.
4975         # Therefore explicitly set the default to XP unless the user has
4976         # set something else on the command line.
4977         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4978         # family. For these cases, configure is free to use any functions
4979         # found in the SDK headers by default. (Alternatively, we could force
4980         # _WIN32_WINNT to 0x0602 in that case.)
4981         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4982             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4983 #ifdef WINAPI_FAMILY
4984 #include <winapifamily.h>
4985 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4986 #error not desktop
4987 #endif
4988 #endif
4989 EOF
4990     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4991         eval ${pfx}libc_type=klibc
4992     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4993         eval ${pfx}libc_type=bionic
4994     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4995         eval ${pfx}libc_type=solaris
4996         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4997     fi
4998     check_${pfx}cc <<EOF
4999 #include <time.h>
5000 void *v = localtime_r;
5001 EOF
5002 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5003 #include <time.h>
5004 void *v = localtime_r;
5005 EOF
5006
5007 }
5008
5009 probe_libc
5010 test -n "$libc_type" && enable libc_$libc_type
5011 probe_libc host_
5012 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5013
5014 case $libc_type in
5015     bionic)
5016         add_compat strtod.o strtod=avpriv_strtod
5017         ;;
5018 esac
5019
5020 # hacks for compiler/libc/os combinations
5021
5022 if enabled_all tms470 libc_glibc; then
5023     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5024     add_cppflags -D__USER_LABEL_PREFIX__=
5025     add_cppflags -D__builtin_memset=memset
5026     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5027     add_cflags   -pds=48    # incompatible redefinition of macro
5028 fi
5029
5030 if enabled_all ccc libc_glibc; then
5031     add_ldflags -Wl,-z,now  # calls to libots crash without this
5032 fi
5033
5034 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5035     add_cppflags '-I\$(SRC_PATH)/compat/float'
5036
5037 esc(){
5038     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5039 }
5040
5041 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5042
5043 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5044
5045 set_default libdir
5046 : ${shlibdir_default:="$libdir"}
5047 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5048
5049 set_default $PATHS_LIST
5050 set_default nm
5051
5052 # we need to build at least one lib type
5053 if ! enabled_any static shared; then
5054     cat <<EOF
5055 At least one library type must be built.
5056 Specify --enable-static to build the static libraries or --enable-shared to
5057 build the shared libraries as well. To only build the shared libraries specify
5058 --disable-static in addition to --enable-shared.
5059 EOF
5060     exit 1
5061 fi
5062
5063 die_license_disabled() {
5064     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5065 }
5066
5067 die_license_disabled_gpl() {
5068     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5069 }
5070
5071 die_license_disabled gpl frei0r
5072 die_license_disabled gpl libcdio
5073 die_license_disabled gpl librubberband
5074 die_license_disabled gpl libsmbclient
5075 die_license_disabled gpl libvidstab
5076 die_license_disabled gpl libx264
5077 die_license_disabled gpl libx265
5078 die_license_disabled gpl libxavs
5079 die_license_disabled gpl libxvid
5080 die_license_disabled gpl x11grab
5081
5082 die_license_disabled nonfree cuda
5083 die_license_disabled nonfree cuvid
5084 die_license_disabled nonfree libnpp
5085 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5086 enabled gpl && die_license_disabled_gpl nonfree openssl
5087
5088 die_license_disabled version3 gmp
5089 die_license_disabled version3 libopencore_amrnb
5090 die_license_disabled version3 libopencore_amrwb
5091 die_license_disabled version3 libsmbclient
5092 die_license_disabled version3 libvo_amrwbenc
5093
5094 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5095
5096 disabled optimizations || check_cflags -fomit-frame-pointer
5097
5098 enable_weak_pic() {
5099     disabled pic && return
5100     enable pic
5101     add_cppflags -DPIC
5102     case "$target_os" in
5103     mingw*|cygwin*)
5104         ;;
5105     *)
5106         add_cflags -fPIC
5107         ;;
5108     esac
5109     add_asflags  -fPIC
5110 }
5111
5112 enabled pic && enable_weak_pic
5113
5114 check_cc <<EOF || die "Symbol mangling check failed."
5115 int ff_extern;
5116 EOF
5117 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5118 extern_prefix=${sym%%ff_extern*}
5119
5120 check_cc <<EOF && enable_weak inline_asm
5121 void foo(void) { __asm__ volatile ("" ::); }
5122 EOF
5123
5124 _restrict=
5125 for restrict_keyword in restrict __restrict__ __restrict; do
5126     check_cc <<EOF && _restrict=$restrict_keyword && break
5127 void foo(char * $restrict_keyword p);
5128 EOF
5129 done
5130
5131 check_cc <<EOF && enable pragma_deprecated
5132 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5133 EOF
5134
5135 check_cc <<EOF && enable attribute_packed
5136 struct { int x; } __attribute__((packed)) x;
5137 EOF
5138
5139 check_cc <<EOF && enable attribute_may_alias
5140 union { int x; } __attribute__((may_alias)) x;
5141 EOF
5142
5143 check_cc <<EOF || die "endian test failed"
5144 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5145 EOF
5146 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5147
5148 if ! enabled ppc64 || enabled bigendian; then
5149     disable vsx
5150 fi
5151
5152 check_gas() {
5153     log "check_gas using '$as' as AS"
5154     # :vararg is used on aarch64, arm and ppc altivec
5155     check_as <<EOF || return 1
5156 .macro m n, y:vararg=0
5157 \n: .int \y
5158 .endm
5159 m x
5160 EOF
5161     # .altmacro is only used in arm asm
5162     ! enabled arm || check_as <<EOF || return 1
5163 .altmacro
5164 EOF
5165     enable gnu_as
5166     return 0
5167 }
5168
5169 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5170     nogas=:
5171     enabled_any arm aarch64 && nogas=die
5172     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5173     as_noop=-v
5174
5175     case $as_type in
5176         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5177         gcc)  gaspp_as_type=gas ;;
5178         *)    gaspp_as_type=$as_type ;;
5179     esac
5180
5181     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5182
5183     test "${as#*gas-preprocessor.pl}" != "$as" ||
5184     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5185         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5186
5187     if ! check_gas ; then
5188         as=${gas:=$as}
5189         check_gas || \
5190             $nogas "GNU assembler not found, install/update gas-preprocessor"
5191     fi
5192
5193     check_as <<EOF && enable as_func
5194 .func test
5195 .endfunc
5196 EOF
5197 fi
5198
5199 check_inline_asm inline_asm_labels '"1:\n"'
5200
5201 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5202
5203 if enabled aarch64; then
5204     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5205     # internal assembler in clang 3.3 does not support this instruction
5206     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5207     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5208
5209     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5210
5211 elif enabled alpha; then
5212
5213     check_cflags -mieee
5214
5215 elif enabled arm; then
5216
5217     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5218
5219     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5220 float func(float a, float b){ return a+b; }
5221 EOF
5222
5223     enabled thumb && check_cflags -mthumb || check_cflags -marm
5224
5225     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5226         enable vfp_args
5227     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5228         enable vfp_args
5229     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5230         case "${cross_prefix:-$cc}" in
5231             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5232             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5233 __asm__ (".eabi_attribute 28, 1");
5234 int main(void) { return 0; }
5235 EOF
5236         esac
5237         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5238     fi
5239
5240     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5241     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5242     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5243     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5244     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5245     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5246     enabled setend  && check_insn setend  'setend be'
5247
5248     [ $target_os = linux ] || [ $target_os = android ] ||
5249         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5250             $ARCH_EXT_LIST_ARM
5251
5252     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5253
5254     check_as <<EOF && enable as_dn_directive
5255 ra .dn d0.i16
5256 .unreq ra
5257 EOF
5258
5259     # llvm's integrated assembler supports .object_arch from llvm 3.5
5260     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5261 .object_arch armv4
5262 EOF
5263
5264     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5265
5266 elif enabled mips; then
5267
5268     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5269     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5270     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5271
5272     # Enable minimum ISA based on selected options
5273     if enabled mips64; then
5274         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5275         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5276         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5277     else
5278         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5279         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5280         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5281         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5282     fi
5283
5284     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5285     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5286     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5287     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5288     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5289
5290 elif enabled parisc; then
5291
5292     if enabled gcc; then
5293         case $($cc -dumpversion) in
5294             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5295         esac
5296     fi
5297
5298 elif enabled ppc; then
5299
5300     enable local_aligned_8 local_aligned_16 local_aligned_32
5301
5302     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5303     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5304     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5305     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5306
5307     # AltiVec flags: The FSF version of GCC differs from the Apple version
5308     if enabled altivec; then
5309         check_cflags -maltivec -mabi=altivec &&
5310         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5311         check_cflags -faltivec
5312
5313         # check if our compiler supports Motorola AltiVec C API
5314         check_cc <<EOF || disable altivec
5315 $inc_altivec_h
5316 int main(void) {
5317     vector signed int v1 = (vector signed int) { 0 };
5318     vector signed int v2 = (vector signed int) { 1 };
5319     v1 = vec_add(v1, v2);
5320     return 0;
5321 }
5322 EOF
5323
5324         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5325     fi
5326
5327     if enabled vsx; then
5328         check_cflags -mvsx &&
5329         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5330     fi
5331
5332     if enabled power8; then
5333         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5334     fi
5335
5336 elif enabled x86; then
5337
5338     check_builtin rdtsc    intrin.h   "__rdtsc()"
5339     check_builtin mm_empty mmintrin.h "_mm_empty()"
5340
5341     enable local_aligned_8 local_aligned_16 local_aligned_32
5342
5343     # check whether EBP is available on x86
5344     # As 'i' is stored on the stack, this program will crash
5345     # if the base pointer is used to access it because the
5346     # base pointer is cleared in the inline assembly code.
5347     check_exec_crash <<EOF && enable ebp_available
5348 volatile int i=0;
5349 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5350 return i;
5351 EOF
5352
5353     # check whether EBX is available on x86
5354     check_inline_asm ebx_available '""::"b"(0)' &&
5355         check_inline_asm ebx_available '"":::"%ebx"'
5356
5357     # check whether xmm clobbers are supported
5358     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5359
5360     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5361         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5362
5363     # check whether binutils is new enough to compile SSSE3/MMXEXT
5364     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5365     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5366
5367     if ! disabled_any asm mmx yasm; then
5368         if check_cmd $yasmexe --version; then
5369             enabled x86_64 && yasm_extra="-m amd64"
5370             yasm_debug="-g dwarf2"
5371         elif check_cmd nasm -v; then
5372             yasmexe=nasm
5373             yasm_debug="-g -F dwarf"
5374             if enabled x86_64; then
5375                 case "$objformat" in
5376                     elf)   objformat=elf64 ;;
5377                     win32) objformat=win64 ;;
5378                 esac
5379             fi
5380         fi
5381
5382         YASMFLAGS="-f $objformat $yasm_extra"
5383         enabled pic               && append YASMFLAGS "-DPIC"
5384         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5385         case "$objformat" in
5386             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5387         esac
5388
5389         check_yasm "movbe ecx, [5]" && enable yasm ||
5390             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5391         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5392         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5393         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5394         check_yasm "CPU amdnop" || disable cpunop
5395     fi
5396
5397     case "$cpu" in
5398         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5399             disable fast_clz
5400         ;;
5401     esac
5402
5403 fi
5404
5405 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5406
5407 check_ldflags -Wl,--as-needed
5408 check_ldflags -Wl,-z,noexecstack
5409
5410 if check_func dlopen && check_func dlsym; then
5411     ldl=
5412 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5413     ldl=-ldl
5414 fi
5415
5416 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5417 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5418 frei0r_filter_extralibs='$ldl'
5419 frei0r_src_filter_extralibs='$ldl'
5420 ladspa_filter_extralibs='$ldl'
5421 nvenc_extralibs='$ldl'
5422 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5423 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5424
5425 if ! disabled network; then
5426     check_func getaddrinfo $network_extralibs
5427     check_func inet_aton $network_extralibs
5428
5429     check_type netdb.h "struct addrinfo"
5430     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5431     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5432     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5433     check_type poll.h "struct pollfd"
5434     check_type netinet/sctp.h "struct sctp_event_subscribe"
5435     check_struct "sys/socket.h" "struct msghdr" msg_flags
5436     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5437     check_type netinet/in.h "struct sockaddr_in6"
5438     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5439     check_type "sys/types.h sys/socket.h" socklen_t
5440
5441     # Prefer arpa/inet.h over winsock2
5442     if check_header arpa/inet.h ; then
5443         check_func closesocket
5444     elif check_header winsock2.h ; then
5445         check_func_headers winsock2.h closesocket -lws2 &&
5446             network_extralibs="-lws2" ||
5447         { check_func_headers winsock2.h closesocket -lws2_32 &&
5448             network_extralibs="-lws2_32"; } || disable winsock2_h network
5449         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5450
5451         check_type ws2tcpip.h socklen_t
5452         check_type ws2tcpip.h "struct addrinfo"
5453         check_type ws2tcpip.h "struct group_source_req"
5454         check_type ws2tcpip.h "struct ip_mreq_source"
5455         check_type ws2tcpip.h "struct ipv6_mreq"
5456         check_type winsock2.h "struct pollfd"
5457         check_struct winsock2.h "struct sockaddr" sa_len
5458         check_type ws2tcpip.h "struct sockaddr_in6"
5459         check_type ws2tcpip.h "struct sockaddr_storage"
5460     else
5461         disable network
5462     fi
5463 fi
5464
5465 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5466 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5467 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5468 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5469 check_builtin sarestart signal.h "SA_RESTART"
5470 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5471 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5472 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5473 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5474 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5475
5476 case "$custom_allocator" in
5477     jemalloc)
5478         # jemalloc by default does not use a prefix
5479         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5480     ;;
5481     tcmalloc)
5482         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5483         malloc_prefix=tc_
5484     ;;
5485 esac
5486
5487 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5488 check_func  ${malloc_prefix}memalign            && enable memalign
5489 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5490
5491 check_func  access
5492 check_func_headers stdlib.h arc4random
5493 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5494 check_func  fcntl
5495 check_func  fork
5496 check_func  gethrtime
5497 check_func  getopt
5498 check_func  getrusage
5499 check_func  gettimeofday
5500 check_func  isatty
5501 check_func  mach_absolute_time
5502 check_func  mkstemp
5503 check_func  mmap
5504 check_func  mprotect
5505 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5506 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5507 check_func  sched_getaffinity
5508 check_func  setrlimit
5509 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5510 check_func  strerror_r
5511 check_func  sysconf
5512 check_func  sysctl
5513 check_func  usleep
5514
5515 check_func_headers conio.h kbhit
5516 check_func_headers io.h setmode
5517 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5518 check_func_headers stdlib.h getenv
5519 check_func_headers sys/stat.h lstat
5520
5521 check_func_headers windows.h CoTaskMemFree -lole32
5522 check_func_headers windows.h GetProcessAffinityMask
5523 check_func_headers windows.h GetProcessTimes
5524 check_func_headers windows.h GetSystemTimeAsFileTime
5525 check_func_headers windows.h LoadLibrary
5526 check_func_headers windows.h MapViewOfFile
5527 check_func_headers windows.h PeekNamedPipe
5528 check_func_headers windows.h SetConsoleTextAttribute
5529 check_func_headers windows.h SetConsoleCtrlHandler
5530 check_func_headers windows.h Sleep
5531 check_func_headers windows.h VirtualAlloc
5532 check_struct windows.h "CONDITION_VARIABLE" Ptr
5533 check_func_headers glob.h glob
5534 enabled xlib &&
5535     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5536
5537 check_header AudioToolbox/AudioToolbox.h
5538 check_header direct.h
5539 check_header dirent.h
5540 check_header dlfcn.h
5541 check_header d3d11.h
5542 check_header dxva.h
5543 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5544 check_header io.h
5545 check_header libcrystalhd/libcrystalhd_if.h
5546 check_header mach/mach_time.h
5547 check_header malloc.h
5548 check_header net/udplite.h
5549 check_header poll.h
5550 check_header sys/mman.h
5551 check_header sys/param.h
5552 check_header sys/resource.h
5553 check_header sys/select.h
5554 check_header sys/time.h
5555 check_header sys/un.h
5556 check_header termios.h
5557 check_header unistd.h
5558 check_header valgrind/valgrind.h
5559 check_header vdpau/vdpau.h
5560 check_header vdpau/vdpau_x11.h
5561 check_header VideoDecodeAcceleration/VDADecoder.h
5562 check_header VideoToolbox/VideoToolbox.h
5563 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5564 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5565 check_header windows.h
5566 check_header X11/extensions/XvMClib.h
5567 check_header asm/types.h
5568
5569 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5570 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5571 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5572 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5573
5574 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5575
5576 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5577 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5578 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5579 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5580 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5581
5582 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5583 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5584 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5585 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5586 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5587 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5588
5589 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5590
5591 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5592
5593 if ! disabled w32threads && ! enabled pthreads; then
5594     check_func_headers "windows.h process.h" _beginthreadex &&
5595         enable w32threads || disable w32threads
5596     if ! enabled w32threads && enabled winrt; then
5597         check_func_headers "windows.h" CreateThread &&
5598             enable w32threads || disable w32threads
5599     fi
5600 fi
5601
5602 # check for some common methods of building with pthread support
5603 # do this before the optional library checks as some of them require pthreads
5604 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5605     enable pthreads
5606     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5607         add_cflags -pthread
5608         add_extralibs -pthread
5609     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5610         add_cflags -pthreads
5611         add_extralibs -pthreads
5612     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5613         add_cflags -ldl -pthread
5614         add_extralibs -ldl -pthread
5615     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5616         add_extralibs -lpthreadGC2
5617     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5618         :
5619     elif ! check_func pthread_join && ! check_func pthread_create; then
5620         disable pthreads
5621     fi
5622     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5623 fi
5624
5625
5626 if enabled pthreads; then
5627   check_func pthread_cancel
5628 fi
5629
5630 enabled pthreads &&
5631     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5632
5633 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5634 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5635 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5636
5637 check_lib math.h sin -lm && LIBM="-lm"
5638 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5639
5640 atan2f_args=2
5641 copysign_args=2
5642 hypot_args=2
5643 ldexpf_args=2
5644 powf_args=2
5645
5646 for func in $MATH_FUNCS; do
5647     eval check_mathfunc $func \${${func}_args:-1}
5648 done
5649
5650 for func in $COMPLEX_FUNCS; do
5651     eval check_complexfunc $func \${${func}_args:-1}
5652 done
5653
5654 # Enable CUVID by default if CUDA is enabled
5655 if enabled cuda && ! disabled cuvid; then
5656     enable cuvid
5657 fi
5658
5659 # these are off by default, so fail if requested and not available
5660 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5661 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5662                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5663 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5664                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5665                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5666 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
5667                                die "ERROR: CUDA not found"; }
5668 enabled cuvid             && { add_cflags -I$source_path;
5669                                check_lib "compat/cuda/cuviddec.h" cuvidCreateDecoder -lnvcuvid ||
5670                                die "ERROR: CUVID not found"; } &&
5671                              { enabled cuda ||
5672                                die "ERROR: CUVID requires CUDA"; }
5673 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5674 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5675 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5676 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5677                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5678 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5679 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5680 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5681 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5682                                check_lib2 "dlfcn.h" dlopen -ldl; }
5683 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5684 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5685 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5686 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5687 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5688 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5689                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5690                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5691 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5692 enabled libebur128        && require ebur128 ebur128.h ebur128_relative_threshold -lebur128
5693 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5694                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5695                                  warn "using libfdk without pkg-config"; } }
5696 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"
5697 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5698 enabled fontconfig        && enable libfontconfig
5699 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5700 enabled libfreetype       && require_libfreetype
5701 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5702 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5703 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5704                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5705                                done || die "ERROR: libgsm not found"; }
5706 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5707 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5708 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5709 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5710 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5711 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5712 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5713 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5714 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5715 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5716                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5717                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5718                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5719 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5720 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5721                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5722                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5723                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5724                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5725                                die "ERROR: libopenjpeg not found"; }
5726 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5727 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5728 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5729 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5730 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5731 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5732 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5733 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5734                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5735 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5736 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5737 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5738 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5739 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5740 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5741 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5742                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5743                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5744 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5745 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5746 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5747 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5748
5749 enabled libvpx            && {
5750     enabled libvpx_vp8_decoder && {
5751         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5752             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5753                 die "ERROR: libvpx decoder version must be >=0.9.1";
5754     }
5755     enabled libvpx_vp8_encoder && {
5756         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5757             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5758                 die "ERROR: libvpx encoder version must be >=0.9.7";
5759     }
5760     enabled libvpx_vp9_decoder && {
5761         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5762             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5763                 disable libvpx_vp9_decoder;
5764     }
5765     enabled libvpx_vp9_encoder && {
5766         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5767             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5768                 disable libvpx_vp9_encoder;
5769     }
5770     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5771         die "libvpx enabled but no supported decoders found"
5772     fi
5773 }
5774
5775 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5776 enabled libwebp           && {
5777     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5778     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5779 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5780                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5781                                  warn "using libx264 without pkg-config"; } } &&
5782                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5783                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5784                              { check_cpp_condition x264.h "X264_MPEG2" &&
5785                                enable libx262; }
5786 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5787                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5788                                die "ERROR: libx265 version must be >= 68."; }
5789 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5790 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5791 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5792 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5793 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5794                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5795                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5796 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5797 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5798                                 { ! enabled cross_compile && {
5799                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5800                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5801                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5802                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5803                                die "ERROR: mmal not found"; }
5804 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5805
5806 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5807 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5808                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5809                                die "ERROR: openal not found"; } &&
5810                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5811                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5812 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5813                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5814                                die "ERROR: opencl not found"; } &&
5815                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5816                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5817                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5818 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5819                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5820                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5821                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5822                                die "ERROR: opengl not found."
5823                              }
5824 enabled omx_rpi && enable omx
5825 enabled omx               && { check_header OMX_Core.h ||
5826                                 { ! enabled cross_compile && enabled omx_rpi && {
5827                                     add_cflags -isystem/opt/vc/include/IL ; }
5828                                 check_header OMX_Core.h ; } ||
5829                                die "ERROR: OpenMAX IL headers not found"; }
5830 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5831                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5832                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5833                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5834                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5835                                die "ERROR: openssl not found"; }
5836 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5837
5838 # libdc1394 check
5839 if enabled libdc1394; then
5840     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5841         enable libdc1394_2; } ||
5842     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5843         enable libdc1394_1; } ||
5844     die "ERROR: No version of libdc1394 found "
5845 fi
5846
5847 if enabled gcrypt; then
5848     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5849     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5850         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5851         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5852         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5853             die "ERROR: gcrypt not found"
5854         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5855     else
5856         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5857     fi
5858 fi
5859
5860 disabled sdl && disable sdl2
5861 if ! disabled sdl2; then
5862     SDL2_CONFIG="${cross_prefix}sdl2-config"
5863     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5864         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5865         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5866         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5867     else
5868       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5869         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5870         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5871         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5872         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5873         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5874       fi
5875     fi
5876     if test $target_os = "mingw32"; then
5877         sdl2_libs="$sdl2_libs -mconsole"
5878     fi
5879 fi
5880 enabled sdl2 && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5881
5882 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5883     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5884     enable securetransport; }
5885
5886 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5887                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5888
5889 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5890 enabled makeinfo \
5891     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5892     && enable makeinfo_html || disable makeinfo_html
5893 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5894 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5895 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5896 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5897
5898 check_header linux/fb.h
5899 check_header linux/videodev.h
5900 check_header linux/videodev2.h
5901 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5902
5903 check_header sys/videoio.h
5904 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5905
5906 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5907 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5908 # w32api 3.12 had it defined wrong
5909 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5910
5911 check_type "dshow.h" IBaseFilter
5912
5913 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5914 { check_header dev/bktr/ioctl_meteor.h &&
5915   check_header dev/bktr/ioctl_bt848.h; } ||
5916 { check_header machine/ioctl_meteor.h &&
5917   check_header machine/ioctl_bt848.h; } ||
5918 { check_header dev/video/meteor/ioctl_meteor.h &&
5919   check_header dev/video/bktr/ioctl_bt848.h; } ||
5920 check_header dev/ic/bt8xx.h
5921
5922 check_header sndio.h
5923 if check_struct sys/soundcard.h audio_buf_info bytes; then
5924     enable_safe sys/soundcard.h
5925 else
5926     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5927     #include <sys/soundcard.h>
5928     audio_buf_info abc;
5929 EOF
5930 fi
5931 check_header soundcard.h
5932
5933 enabled_any alsa_indev alsa_outdev &&
5934     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5935
5936 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5937     check_func jack_port_get_latency_range -ljack
5938
5939 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5940
5941 if enabled libcdio; then
5942     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5943     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5944     die "ERROR: No usable libcdio/cdparanoia found"
5945 fi
5946
5947 enabled xlib &&
5948     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5949
5950 if ! disabled libxcb; then
5951     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5952         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5953     } && disable x11grab && enable libxcb
5954
5955 if enabled libxcb; then
5956     disabled libxcb_shm || {
5957         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5958             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5959         } && check_header sys/shm.h && enable libxcb_shm; }
5960
5961     disabled libxcb_xfixes || {
5962         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5963             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5964         } && enable libxcb_xfixes; }
5965
5966     disabled libxcb_shape || {
5967         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5968             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5969         } && enable libxcb_shape; }
5970
5971     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5972     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5973 fi
5974 fi
5975
5976 if enabled x11grab; then
5977     enabled xlib || die "ERROR: Xlib not found"
5978     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5979     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5980 fi
5981
5982 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5983
5984 enabled dxva2api_h &&
5985     check_cc <<EOF && enable dxva2api_cobj
5986 #define _WIN32_WINNT 0x0600
5987 #define COBJMACROS
5988 #include <windows.h>
5989 #include <d3d9.h>
5990 #include <dxva2api.h>
5991 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5992 EOF
5993
5994 enabled vaapi &&
5995     check_lib va/va.h vaInitialize -lva ||
5996     disable vaapi
5997
5998 enabled vaapi &&
5999     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6000     disable vaapi
6001
6002 if enabled vaapi ; then
6003     enabled xlib &&
6004     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6005     enable vaapi_x11
6006
6007     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6008     enable vaapi_drm
6009 fi
6010
6011 enabled vdpau &&
6012     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6013     disable vdpau
6014
6015 enabled vdpau && enabled xlib &&
6016     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6017     enable vdpau_x11
6018
6019 if enabled x86; then
6020     case $target_os in
6021         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6022             ;;
6023         *)
6024             disable nvenc
6025             ;;
6026     esac
6027 else
6028     disable nvenc
6029 fi
6030
6031 enabled nvenc &&
6032     check_cc -I$source_path <<EOF || disable nvenc
6033 #include "compat/nvenc/nvEncodeAPI.h"
6034 NV_ENCODE_API_FUNCTION_LIST flist;
6035 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6036 int main(void) { return 0; }
6037 EOF
6038
6039 # Funny iconv installations are not unusual, so check it after all flags have been set
6040 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6041
6042 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6043
6044 # add some useful compiler flags if supported
6045 check_cflags -Wdeclaration-after-statement
6046 check_cflags -Wall
6047 check_cflags -Wdisabled-optimization
6048 check_cflags -Wpointer-arith
6049 check_cflags -Wredundant-decls
6050 check_cflags -Wwrite-strings
6051 check_cflags -Wtype-limits
6052 check_cflags -Wundef
6053 check_cflags -Wmissing-prototypes
6054 check_cflags -Wno-pointer-to-int-cast
6055 check_cflags -Wstrict-prototypes
6056 check_cflags -Wempty-body
6057 enabled extra_warnings && check_cflags -Winline
6058 enabled extra_warnings && check_cflags -Wcast-qual
6059
6060 check_disable_warning(){
6061     warning_flag=-W${1#-Wno-}
6062     test_cflags $warning_flag && add_cflags $1
6063 }
6064
6065 check_disable_warning -Wno-parentheses
6066 check_disable_warning -Wno-switch
6067 check_disable_warning -Wno-format-zero-length
6068 check_disable_warning -Wno-pointer-sign
6069 check_disable_warning -Wno-unused-const-variable
6070
6071 # add some linker flags
6072 check_ldflags -Wl,--warn-common
6073 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6074 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6075 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6076 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6077
6078 # add some strip flags
6079 # -wN '..@*' is more selective than -x, but not available everywhere.
6080 check_stripflags -wN \'..@*\' || check_stripflags -x
6081
6082 enabled neon_clobber_test &&
6083     check_ldflags -Wl,--wrap,avcodec_open2              \
6084                   -Wl,--wrap,avcodec_decode_audio4      \
6085                   -Wl,--wrap,avcodec_decode_video2      \
6086                   -Wl,--wrap,avcodec_decode_subtitle2   \
6087                   -Wl,--wrap,avcodec_encode_audio2      \
6088                   -Wl,--wrap,avcodec_encode_video2      \
6089                   -Wl,--wrap,avcodec_send_packet        \
6090                   -Wl,--wrap,avcodec_receive_frame      \
6091                   -Wl,--wrap,avcodec_send_frame         \
6092                   -Wl,--wrap,avcodec_receive_packet     \
6093                   -Wl,--wrap,avcodec_encode_subtitle    \
6094                   -Wl,--wrap,swr_convert                \
6095                   -Wl,--wrap,avresample_convert ||
6096     disable neon_clobber_test
6097
6098 enabled xmm_clobber_test &&
6099     check_ldflags -Wl,--wrap,avcodec_open2              \
6100                   -Wl,--wrap,avcodec_decode_audio4      \
6101                   -Wl,--wrap,avcodec_decode_video2      \
6102                   -Wl,--wrap,avcodec_decode_subtitle2   \
6103                   -Wl,--wrap,avcodec_encode_audio2      \
6104                   -Wl,--wrap,avcodec_encode_video2      \
6105                   -Wl,--wrap,avcodec_encode_subtitle    \
6106                   -Wl,--wrap,avcodec_send_packet        \
6107                   -Wl,--wrap,avcodec_receive_frame      \
6108                   -Wl,--wrap,avcodec_send_frame         \
6109                   -Wl,--wrap,avcodec_receive_packet     \
6110                   -Wl,--wrap,swr_convert                \
6111                   -Wl,--wrap,avresample_convert         \
6112                   -Wl,--wrap,sws_scale ||
6113     disable xmm_clobber_test
6114
6115 check_ld "cc" <<EOF && enable proper_dce
6116 extern const int array[512];
6117 static inline int func(void) { return array[0]; }
6118 int main(void) { return 0; }
6119 EOF
6120
6121 if enabled proper_dce; then
6122     echo "X { local: *; };" > $TMPV
6123     if test_ldflags -Wl,${version_script},$TMPV; then
6124         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6125         check_cc <<EOF && enable symver_asm_label
6126 void ff_foo(void) __asm__ ("av_foo@VERSION");
6127 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6128 EOF
6129         check_cc <<EOF && enable symver_gnu_asm
6130 __asm__(".symver ff_foo,av_foo@VERSION");
6131 void ff_foo(void) {}
6132 EOF
6133     fi
6134 fi
6135
6136 if [ -z "$optflags" ]; then
6137     if enabled small; then
6138         optflags=$cflags_size
6139     elif enabled optimizations; then
6140         optflags=$cflags_speed
6141     else
6142         optflags=$cflags_noopt
6143     fi
6144 fi
6145
6146 check_optflags(){
6147     check_cflags "$@"
6148     enabled lto && check_ldflags "$@"
6149 }
6150
6151
6152 if enabled lto; then
6153     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6154     check_cflags  -flto
6155     check_ldflags -flto $cpuflags
6156     disable inline_asm_direct_symbol_refs
6157 fi
6158
6159 check_optflags $optflags
6160 check_optflags -fno-math-errno
6161 check_optflags -fno-signed-zeros
6162
6163 enabled ftrapv && check_cflags -ftrapv
6164
6165 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6166 int x;
6167 EOF
6168
6169
6170 if enabled icc; then
6171     # Just warnings, no remarks
6172     check_cflags -w1
6173     # -wd: Disable following warnings
6174     # 144, 167, 556: -Wno-pointer-sign
6175     # 188: enumerated type mixed with another type
6176     # 1292: attribute "foo" ignored
6177     # 1419: external declaration in primary source file
6178     # 10006: ignoring unknown option -fno-signed-zeros
6179     # 10148: ignoring unknown option -Wno-parentheses
6180     # 10156: ignoring option '-W'; no argument required
6181     # 13200: No EMMS instruction before call to function
6182     # 13203: No EMMS instruction before return from function
6183     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6184     # 11030: Warning unknown option --as-needed
6185     # 10156: ignoring option '-export'; no argument required
6186     check_ldflags -wd10156,11030
6187     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6188     enable ebp_available
6189     # The test above does not test linking
6190     enabled lto && disable symver_asm_label
6191     if enabled x86_32; then
6192         icc_version=$($cc -dumpversion)
6193         test ${icc_version%%.*} -ge 11 &&
6194             check_cflags -falign-stack=maintain-16-byte ||
6195             disable aligned_stack
6196     fi
6197 elif enabled ccc; then
6198     # disable some annoying warnings
6199     add_cflags -msg_disable bitnotint
6200     add_cflags -msg_disable mixfuncvoid
6201     add_cflags -msg_disable nonstandcast
6202     add_cflags -msg_disable unsupieee
6203 elif enabled gcc; then
6204     check_optflags -fno-tree-vectorize
6205     check_cflags -Werror=format-security
6206     check_cflags -Werror=implicit-function-declaration
6207     check_cflags -Werror=missing-prototypes
6208     check_cflags -Werror=return-type
6209     check_cflags -Werror=vla
6210     check_cflags -Wformat
6211     check_cflags -fdiagnostics-color=auto
6212     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6213 elif enabled llvm_gcc; then
6214     check_cflags -mllvm -stack-alignment=16
6215 elif enabled clang; then
6216     check_cflags -mllvm -stack-alignment=16
6217     check_cflags -mstack-alignment=16
6218     check_cflags -Qunused-arguments
6219     check_cflags -Werror=implicit-function-declaration
6220     check_cflags -Werror=missing-prototypes
6221     check_cflags -Werror=return-type
6222 elif enabled cparser; then
6223     add_cflags -Wno-missing-variable-declarations
6224     add_cflags -Wno-empty-statement
6225 elif enabled armcc; then
6226     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6227     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6228     # 2523: use of inline assembly is deprecated
6229     add_cflags -W${armcc_opt},--diag_suppress=2523
6230     add_cflags -W${armcc_opt},--diag_suppress=1207
6231     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6232     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6233     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6234     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6235 elif enabled tms470; then
6236     add_cflags -pds=824 -pds=837
6237     disable inline_asm
6238 elif enabled pathscale; then
6239     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6240 elif enabled_any msvc icl; then
6241     enabled x86_32 && disable aligned_stack
6242     enabled_all x86_32 debug && add_cflags -Oy-
6243     enabled debug && add_ldflags -debug
6244     enable pragma_deprecated
6245     if enabled icl; then
6246         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6247         # (correctly) on icl 13.x.
6248         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6249             add_cflags -Qansi-alias
6250         # Some inline asm is not compilable in debug
6251         if enabled debug; then
6252             disable ebp_available
6253             disable ebx_available
6254         fi
6255     fi
6256     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6257     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6258     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6259     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6260     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6261     # MSVC 2013 and newer can handle it fine.
6262     # If this declspec fails, force including stdlib.h before the restrict redefinition
6263     # happens in config.h.
6264     if [ $_restrict != restrict ]; then
6265         check_cc <<EOF || add_cflags -FIstdlib.h
6266 __declspec($_restrict) void* foo(int);
6267 EOF
6268     fi
6269     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6270     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6271     # this flag should be re-checked on newer compiler releases and put under a
6272     # version check once its fixed
6273     check_cflags -d2SSAOptimizer-
6274 fi
6275
6276 for pfx in "" host_; do
6277     varname=${pfx%_}cc_type
6278     eval "type=\$$varname"
6279     if [ $type = "msvc" ]; then
6280         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6281 static inline int foo(int a) { return a; }
6282 EOF
6283     fi
6284 done
6285
6286 case $as_type in
6287     clang)
6288         add_asflags -Qunused-arguments
6289     ;;
6290 esac
6291
6292 case $ld_type in
6293     clang)
6294         check_ldflags -Qunused-arguments
6295     ;;
6296 esac
6297
6298 case $target_os in
6299     osf1)
6300         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6301     ;;
6302     plan9)
6303         add_cppflags -Dmain=plan9_main
6304     ;;
6305 esac
6306
6307 enable frame_thread_encoder
6308
6309 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6310
6311 check_deps $CONFIG_LIST       \
6312            $CONFIG_EXTRA      \
6313            $HAVE_LIST         \
6314            $ALL_COMPONENTS    \
6315
6316 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"
6317
6318
6319 if test $target_os = "haiku"; then
6320     disable memalign
6321     disable posix_memalign
6322 fi
6323
6324 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6325     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6326     enable dxva2_lib
6327
6328 ! enabled_any memalign posix_memalign aligned_malloc &&
6329     enabled simd_align_16 && enable memalign_hack
6330
6331 # add_dep lib dep
6332 # -> enable ${lib}_deps_${dep}
6333 # -> add $dep to ${lib}_deps only once
6334 add_dep() {
6335     lib=$1
6336     dep=$2
6337     enabled "${lib}_deps_${dep}" && return 0
6338     enable  "${lib}_deps_${dep}"
6339     prepend "${lib}_deps" $dep
6340 }
6341
6342 # merge deps lib components
6343 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6344 merge_deps() {
6345     lib=$1
6346     shift
6347     for comp in $*; do
6348         enabled $comp || continue
6349         eval "dep=\"\$${comp}_deps\""
6350         for d in $dep; do
6351             add_dep $lib $d
6352         done
6353     done
6354 }
6355
6356 merge_deps libavfilter $FILTER_LIST
6357
6358 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6359
6360 for thread in $THREADS_LIST; do
6361     if enabled $thread; then
6362         test -n "$thread_type" &&
6363             die "ERROR: Only one thread type must be selected." ||
6364             thread_type="$thread"
6365     fi
6366 done
6367
6368 enabled zlib && add_cppflags -DZLIB_CONST
6369
6370 # conditional library dependencies, in linking order
6371 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6372 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6373 enabled aresample_filter    && prepend avfilter_deps "swresample"
6374 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6375 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6376 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6377 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6378 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6379 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6380 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6381 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6382 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6383 enabled pan_filter          && prepend avfilter_deps "swresample"
6384 enabled pp_filter           && prepend avfilter_deps "postproc"
6385 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6386 enabled resample_filter && prepend avfilter_deps "avresample"
6387 enabled sab_filter          && prepend avfilter_deps "swscale"
6388 enabled scale_filter    && prepend avfilter_deps "swscale"
6389 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6390 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6391 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6392 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6393 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6394 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6395 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6396 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6397 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6398
6399 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6400
6401 enabled opus_decoder    && prepend avcodec_deps "swresample"
6402
6403 expand_deps(){
6404     lib_deps=${1}_deps
6405     eval "deps=\$$lib_deps"
6406     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6407     unique $lib_deps
6408 }
6409
6410 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6411 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6412
6413 map 'expand_deps $v' $LIBRARY_LIST
6414
6415 echo "install prefix            $prefix"
6416 echo "source path               $source_path"
6417 echo "C compiler                $cc"
6418 echo "C library                 $libc_type"
6419 if test "$host_cc" != "$cc"; then
6420     echo "host C compiler           $host_cc"
6421     echo "host C library            $host_libc_type"
6422 fi
6423 echo "ARCH                      $arch ($cpu)"
6424 if test "$build_suffix" != ""; then
6425     echo "build suffix              $build_suffix"
6426 fi
6427 if test "$progs_suffix" != ""; then
6428     echo "progs suffix              $progs_suffix"
6429 fi
6430 if test "$extra_version" != ""; then
6431     echo "version string suffix     $extra_version"
6432 fi
6433 echo "big-endian                ${bigendian-no}"
6434 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6435 if enabled x86; then
6436     echo "${yasmexe}                      ${yasm-no}"
6437     echo "MMX enabled               ${mmx-no}"
6438     echo "MMXEXT enabled            ${mmxext-no}"
6439     echo "3DNow! enabled            ${amd3dnow-no}"
6440     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6441     echo "SSE enabled               ${sse-no}"
6442     echo "SSSE3 enabled             ${ssse3-no}"
6443     echo "AESNI enabled             ${aesni-no}"
6444     echo "AVX enabled               ${avx-no}"
6445     echo "XOP enabled               ${xop-no}"
6446     echo "FMA3 enabled              ${fma3-no}"
6447     echo "FMA4 enabled              ${fma4-no}"
6448     echo "i686 features enabled     ${i686-no}"
6449     echo "CMOV is fast              ${fast_cmov-no}"
6450     echo "EBX available             ${ebx_available-no}"
6451     echo "EBP available             ${ebp_available-no}"
6452 fi
6453 if enabled aarch64; then
6454     echo "NEON enabled              ${neon-no}"
6455     echo "VFP enabled               ${vfp-no}"
6456 fi
6457 if enabled arm; then
6458     echo "ARMv5TE enabled           ${armv5te-no}"
6459     echo "ARMv6 enabled             ${armv6-no}"
6460     echo "ARMv6T2 enabled           ${armv6t2-no}"
6461     echo "VFP enabled               ${vfp-no}"
6462     echo "NEON enabled              ${neon-no}"
6463     echo "THUMB enabled             ${thumb-no}"
6464 fi
6465 if enabled mips; then
6466     echo "MIPS FPU enabled          ${mipsfpu-no}"
6467     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6468     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6469     echo "MIPS MSA enabled          ${msa-no}"
6470     echo "LOONGSON MMI enabled      ${mmi-no}"
6471 fi
6472 if enabled ppc; then
6473     echo "AltiVec enabled           ${altivec-no}"
6474     echo "VSX enabled               ${vsx-no}"
6475     echo "POWER8 enabled            ${power8-no}"
6476     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6477     echo "dcbzl available           ${dcbzl-no}"
6478 fi
6479 echo "debug symbols             ${debug-no}"
6480 echo "strip symbols             ${stripping-no}"
6481 echo "optimize for size         ${small-no}"
6482 echo "optimizations             ${optimizations-no}"
6483 echo "static                    ${static-no}"
6484 echo "shared                    ${shared-no}"
6485 echo "postprocessing support    ${postproc-no}"
6486 echo "new filter support        ${avfilter-no}"
6487 echo "network support           ${network-no}"
6488 echo "threading support         ${thread_type-no}"
6489 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6490 echo "SDL2 support              ${sdl2-no}"
6491 echo "opencl enabled            ${opencl-no}"
6492 echo "JNI support               ${jni-no}"
6493 echo "texi2html enabled         ${texi2html-no}"
6494 echo "perl enabled              ${perl-no}"
6495 echo "pod2man enabled           ${pod2man-no}"
6496 echo "makeinfo enabled          ${makeinfo-no}"
6497 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6498 test -n "$random_seed" &&
6499     echo "random seed               ${random_seed}"
6500 echo
6501
6502 echo "Enabled programs:"
6503 print_enabled '' $PROGRAM_LIST | print_in_columns
6504 echo
6505
6506 echo "External libraries:"
6507 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6508 echo
6509
6510 echo "External libraries providing hardware acceleration:"
6511 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6512 echo
6513
6514 echo "Libraries:"
6515 print_enabled '' $LIBRARY_LIST | print_in_columns
6516 echo
6517
6518 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6519     echo "Enabled ${type}s:"
6520     eval list=\$$(toupper $type)_LIST
6521     print_enabled '_*' $list | print_in_columns
6522     echo
6523 done
6524
6525 license="LGPL version 2.1 or later"
6526 if enabled nonfree; then
6527     license="nonfree and unredistributable"
6528 elif enabled gplv3; then
6529     license="GPL version 3 or later"
6530 elif enabled lgplv3; then
6531     license="LGPL version 3 or later"
6532 elif enabled gpl; then
6533     license="GPL version 2 or later"
6534 fi
6535
6536 echo "License: $license"
6537
6538 echo "Creating config.mak, config.h, and doc/config.texi..."
6539
6540 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6541
6542 enabled stripping || strip="echo skipping strip"
6543
6544 config_files="$TMPH config.mak doc/config.texi"
6545
6546 cat > config.mak <<EOF
6547 # Automatically generated by configure - do not modify!
6548 ifndef FFMPEG_CONFIG_MAK
6549 FFMPEG_CONFIG_MAK=1
6550 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6551 prefix=$prefix
6552 LIBDIR=\$(DESTDIR)$libdir
6553 SHLIBDIR=\$(DESTDIR)$shlibdir
6554 INCDIR=\$(DESTDIR)$incdir
6555 BINDIR=\$(DESTDIR)$bindir
6556 DATADIR=\$(DESTDIR)$datadir
6557 DOCDIR=\$(DESTDIR)$docdir
6558 MANDIR=\$(DESTDIR)$mandir
6559 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6560 INSTALL_NAME_DIR=$install_name_dir
6561 SRC_PATH=$source_path
6562 SRC_LINK=$source_link
6563 ifndef MAIN_MAKEFILE
6564 SRC_PATH:=\$(SRC_PATH:.%=..%)
6565 endif
6566 CC_IDENT=$cc_ident
6567 ARCH=$arch
6568 INTRINSICS=$intrinsics
6569 CC=$cc
6570 CXX=$cxx
6571 AS=$as
6572 OBJCC=$objcc
6573 LD=$ld
6574 DEPCC=$dep_cc
6575 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6576 DEPAS=$as
6577 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6578 YASM=$yasmexe
6579 DEPYASM=$yasmexe
6580 AR=$ar
6581 ARFLAGS=$arflags
6582 AR_O=$ar_o
6583 RANLIB=$ranlib
6584 STRIP=$strip
6585 CP=cp -p
6586 LN_S=$ln_s
6587 CPPFLAGS=$CPPFLAGS
6588 CFLAGS=$CFLAGS
6589 CXXFLAGS=$CXXFLAGS
6590 OBJCFLAGS=$OBJCFLAGS
6591 ASFLAGS=$ASFLAGS
6592 AS_C=$AS_C
6593 AS_O=$AS_O
6594 OBJCC_C=$OBJCC_C
6595 OBJCC_E=$OBJCC_E
6596 OBJCC_O=$OBJCC_O
6597 CC_C=$CC_C
6598 CC_E=$CC_E
6599 CC_O=$CC_O
6600 CXX_C=$CXX_C
6601 CXX_O=$CXX_O
6602 LD_O=$LD_O
6603 LD_LIB=$LD_LIB
6604 LD_PATH=$LD_PATH
6605 DLLTOOL=$dlltool
6606 WINDRES=$windres
6607 DEPWINDRES=$dep_cc
6608 DOXYGEN=$doxygen
6609 LDFLAGS=$LDFLAGS
6610 LDEXEFLAGS=$LDEXEFLAGS
6611 LDLIBFLAGS=$LDLIBFLAGS
6612 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6613 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6614 YASMFLAGS=$YASMFLAGS
6615 BUILDSUF=$build_suffix
6616 PROGSSUF=$progs_suffix
6617 FULLNAME=$FULLNAME
6618 LIBPREF=$LIBPREF
6619 LIBSUF=$LIBSUF
6620 LIBNAME=$LIBNAME
6621 SLIBPREF=$SLIBPREF
6622 SLIBSUF=$SLIBSUF
6623 EXESUF=$EXESUF
6624 EXTRA_VERSION=$extra_version
6625 CCDEP=$CCDEP
6626 CXXDEP=$CXXDEP
6627 CCDEP_FLAGS=$CCDEP_FLAGS
6628 ASDEP=$ASDEP
6629 ASDEP_FLAGS=$ASDEP_FLAGS
6630 CC_DEPFLAGS=$CC_DEPFLAGS
6631 AS_DEPFLAGS=$AS_DEPFLAGS
6632 HOSTCC=$host_cc
6633 HOSTLD=$host_ld
6634 HOSTCFLAGS=$host_cflags
6635 HOSTCPPFLAGS=$host_cppflags
6636 HOSTEXESUF=$HOSTEXESUF
6637 HOSTLDFLAGS=$host_ldflags
6638 HOSTLIBS=$host_libs
6639 DEPHOSTCC=$host_cc
6640 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6641 HOSTCCDEP=$HOSTCCDEP
6642 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6643 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6644 HOSTCC_C=$HOSTCC_C
6645 HOSTCC_O=$HOSTCC_O
6646 HOSTLD_O=$HOSTLD_O
6647 TARGET_EXEC=$target_exec $target_exec_args
6648 TARGET_PATH=$target_path
6649 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6650 CFLAGS-ffplay=${sdl2_cflags}
6651 ZLIB=$($ldflags_filter -lz)
6652 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6653 EXTRALIBS=$extralibs
6654 COMPAT_OBJS=$compat_objs
6655 EXEOBJS=$exeobjs
6656 INSTALL=$install
6657 LIBTARGET=${LIBTARGET}
6658 SLIBNAME=${SLIBNAME}
6659 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6660 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6661 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6662 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6663 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6664 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6665 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6666 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6667 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6668 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6669 NOREDZONE_FLAGS=$noredzone_flags
6670 EOF
6671
6672 get_version(){
6673     lcname=lib${1}
6674     name=$(toupper $lcname)
6675     file=$source_path/$lcname/version.h
6676     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6677     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6678     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6679     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6680     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6681     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6682 }
6683
6684 map 'get_version $v' $LIBRARY_LIST
6685
6686 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6687
6688 print_program_libs(){
6689     eval "program_libs=\$${1}_libs"
6690     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6691 }
6692
6693 map 'print_program_libs $v' $PROGRAM_LIST
6694
6695 cat > $TMPH <<EOF
6696 /* Automatically generated by configure - do not modify! */
6697 #ifndef FFMPEG_CONFIG_H
6698 #define FFMPEG_CONFIG_H
6699 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6700 #define FFMPEG_LICENSE "$(c_escape $license)"
6701 #define CONFIG_THIS_YEAR 2016
6702 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6703 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6704 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6705 #define av_restrict $_restrict
6706 #define EXTERN_PREFIX "${extern_prefix}"
6707 #define EXTERN_ASM ${extern_prefix}
6708 #define BUILDSUF "$build_suffix"
6709 #define SLIBSUF "$SLIBSUF"
6710 #define HAVE_MMX2 HAVE_MMXEXT
6711 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6712 EOF
6713
6714 test -n "$assert_level" &&
6715     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6716
6717 test -n "$malloc_prefix" &&
6718     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6719
6720 if enabled yasm; then
6721     append config_files $TMPASM
6722     printf '' >$TMPASM
6723 fi
6724
6725 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6726
6727
6728 mkdir -p doc
6729 mkdir -p tests
6730 mkdir -p tests/api
6731 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6732
6733 print_config ARCH_   "$config_files" $ARCH_LIST
6734 print_config HAVE_   "$config_files" $HAVE_LIST
6735 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6736                                      $CONFIG_EXTRA      \
6737                                      $ALL_COMPONENTS    \
6738
6739 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6740 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6741
6742 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6743 cp_if_changed $TMPH config.h
6744 touch .config
6745
6746 enabled yasm && cp_if_changed $TMPASM config.asm
6747
6748 cat > $TMPH <<EOF
6749 /* Generated by ffconf */
6750 #ifndef AVUTIL_AVCONFIG_H
6751 #define AVUTIL_AVCONFIG_H
6752 EOF
6753
6754 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6755
6756 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6757
6758 cp_if_changed $TMPH libavutil/avconfig.h
6759
6760 if test -n "$WARNINGS"; then
6761     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6762     enabled fatal_warnings && exit 1
6763 fi
6764
6765 # generate the lists of enabled components
6766 print_enabled_components(){
6767     file=$1
6768     struct_name=$2
6769     name=$3
6770     shift 3
6771     echo "static const $struct_name *$name[] = {" > $TMPH
6772     for c in $*; do
6773         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6774     done
6775     echo "    NULL };" >> $TMPH
6776     cp_if_changed $TMPH $file
6777 }
6778
6779 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6780 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6781
6782 # build pkg-config files
6783
6784 lib_version(){
6785     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6786 }
6787
6788 pkgconfig_generate(){
6789     name=$1
6790     shortname=${name#lib}${build_suffix}
6791     comment=$2
6792     version=$3
6793     libs=$4
6794     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6795     requires=${requires%, }
6796     enabled ${name#lib} || return 0
6797     mkdir -p $name
6798     cat <<EOF > $name/$name${build_suffix}.pc
6799 prefix=$prefix
6800 exec_prefix=\${prefix}
6801 libdir=$libdir
6802 includedir=$incdir
6803
6804 Name: $name
6805 Description: $comment
6806 Version: $version
6807 Requires: $(enabled shared || echo $requires)
6808 Requires.private: $(enabled shared && echo $requires)
6809 Conflicts:
6810 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6811 Libs.private: $(enabled shared && echo $libs)
6812 Cflags: -I\${includedir}
6813 EOF
6814
6815 mkdir -p doc/examples/pc-uninstalled
6816 includedir=${source_path}
6817 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6818     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6819 prefix=
6820 exec_prefix=
6821 libdir=\${pcfiledir}/../../../$name
6822 includedir=${includedir}
6823
6824 Name: $name
6825 Description: $comment
6826 Version: $version
6827 Requires: $requires
6828 Conflicts:
6829 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6830 Cflags: -I\${includedir}
6831 EOF
6832 }
6833
6834 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6835 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6836 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6837 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6838 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6839 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6840 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6841 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6842 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"