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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 112   --enable-raise-major     increase major version numbers in sonames [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Hardware accelerators:
 153   --disable-d3d11va        disable D3D11VA code [autodetect]
 154   --disable-dxva2          disable DXVA2 code [autodetect]
 155   --disable-vaapi          disable VAAPI code [autodetect]
 156   --disable-vda            disable VDA code [autodetect]
 157   --disable-vdpau          disable VDPAU code [autodetect]
 158
 159 Hardware-accelerated decoding/encoding:
 160   --enable-cuda            enable dynamically linked CUDA [no]
 161   --enable-libmfx          enable HW acceleration through libmfx
 162   --enable-mmal            enable decoding via MMAL [no]
 163   --enable-nvenc           enable NVIDIA NVENC support [no]
 164   --enable-omx             enable encoding via OpenMAX IL [no]
 165   --enable-omx-rpi         enable encoding via OpenMAX IL for Raspberry Pi [no]
 166
 167 Individual component options:
 168   --disable-everything     disable all components listed below
 169   --disable-encoder=NAME   disable encoder NAME
 170   --enable-encoder=NAME    enable encoder NAME
 171   --disable-encoders       disable all encoders
 172   --disable-decoder=NAME   disable decoder NAME
 173   --enable-decoder=NAME    enable decoder NAME
 174   --disable-decoders       disable all decoders
 175   --disable-hwaccel=NAME   disable hwaccel NAME
 176   --enable-hwaccel=NAME    enable hwaccel NAME
 177   --disable-hwaccels       disable all hwaccels
 178   --disable-muxer=NAME     disable muxer NAME
 179   --enable-muxer=NAME      enable muxer NAME
 180   --disable-muxers         disable all muxers
 181   --disable-demuxer=NAME   disable demuxer NAME
 182   --enable-demuxer=NAME    enable demuxer NAME
 183   --disable-demuxers       disable all demuxers
 184   --enable-parser=NAME     enable parser NAME
 185   --disable-parser=NAME    disable parser NAME
 186   --disable-parsers        disable all parsers
 187   --enable-bsf=NAME        enable bitstream filter NAME
 188   --disable-bsf=NAME       disable bitstream filter NAME
 189   --disable-bsfs           disable all bitstream filters
 190   --enable-protocol=NAME   enable protocol NAME
 191   --disable-protocol=NAME  disable protocol NAME
 192   --disable-protocols      disable all protocols
 193   --enable-indev=NAME      enable input device NAME
 194   --disable-indev=NAME     disable input device NAME
 195   --disable-indevs         disable input devices
 196   --enable-outdev=NAME     enable output device NAME
 197   --disable-outdev=NAME    disable output device NAME
 198   --disable-outdevs        disable output devices
 199   --disable-devices        disable all devices
 200   --enable-filter=NAME     enable filter NAME
 201   --disable-filter=NAME    disable filter NAME
 202   --disable-filters        disable all filters
 203
 204 External library support:
 205   --disable-audiotoolbox   enable AudioToolbox decoders and encoders [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 209   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libass          enable libass subtitles rendering,
 221                            needed for subtitles and ass filter [no]
 222   --enable-libbluray       enable BluRay reading using libbluray [no]
 223   --enable-libbs2b         enable bs2b DSP library [no]
 224   --enable-libcaca         enable textual display using libcaca [no]
 225   --enable-libcelt         enable CELT decoding via libcelt [no]
 226   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 227   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 228                            and libraw1394 [no]
 229   --enable-libebur128      enable libebur128 for EBU R128 measurement,
 230                            needed for loudnorm filter [no]
 231   --enable-libfaac         enable AAC encoding via libfaac [no]
 232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 241   --enable-libmodplug      enable ModPlug via libmodplug [no]
 242   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 243   --enable-libnut          enable NUT (de)muxing via libnut,
 244                            native (de)muxer exists [no]
 245   --enable-libnpp          enable NVIDIA Performance Primitives-based code [no]
 246   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 247   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 248   --enable-libopencv       enable video filtering via libopencv [no]
 249   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 250   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 251   --enable-libopus         enable Opus de/encoding via libopus [no]
 252   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 256   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 257   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 258   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 259   --enable-libsoxr         enable Include libsoxr resampling [no]
 260   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 261   --enable-libssh          enable SFTP protocol via libssh [no]
 262   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 263   --enable-libtheora       enable Theora encoding via libtheora [no]
 264   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 265   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 266   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 267   --enable-libvidstab      enable video stabilization using vid.stab [no]
 268   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 269   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 270                            native implementation exists [no]
 271   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 272   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 273   --enable-libwebp         enable WebP encoding via libwebp [no]
 274   --enable-libx264         enable H.264 encoding via x264 [no]
 275   --enable-libx265         enable HEVC encoding via x265 [no]
 276   --enable-libxavs         enable AVS encoding via xavs [no]
 277   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 278   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 279   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 280   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 281   --enable-libxvid         enable Xvid encoding via xvidcore,
 282                            native MPEG-4/Xvid encoder exists [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-mediacodec      enable Android MediaCodec support [no]
 289   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 290   --enable-openal          enable OpenAL 1.1 capture support [no]
 291   --enable-opencl          enable OpenCL code
 292   --enable-opengl          enable OpenGL rendering [no]
 293   --enable-openssl         enable openssl, needed for https support
 294                            if gnutls is not used [no]
 295   --disable-schannel       disable SChannel SSP, needed for TLS support on
 296                            Windows if openssl and gnutls are not used [autodetect]
 297   --disable-sdl            disable sdl [autodetect]
 298   --disable-securetransport disable Secure Transport, needed for TLS support
 299                            on OSX if openssl and gnutls are not used [autodetect]
 300   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 301   --enable-x11grab         enable X11 grabbing (legacy) [no]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305 Toolchain options:
 306   --arch=ARCH              select architecture [$arch]
 307   --cpu=CPU                select the minimum required CPU (affects
 308                            instruction selection, may crash on older CPUs)
 309   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 310   --progs-suffix=SUFFIX    program name suffix []
 311   --enable-cross-compile   assume a cross-compiler is used
 312   --sysroot=PATH           root of cross-build tree
 313   --sysinclude=PATH        location of cross-build system headers
 314   --target-os=OS           compiler targets OS [$target_os]
 315   --target-exec=CMD        command to run executables on target
 316   --target-path=DIR        path to view of build directory on target
 317   --target-samples=DIR     path to samples directory on target
 318   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 319   --toolchain=NAME         set tool defaults according to NAME
 320   --nm=NM                  use nm tool NM [$nm_default]
 321   --ar=AR                  use archive tool AR [$ar_default]
 322   --as=AS                  use assembler AS [$as_default]
 323   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 324   --strip=STRIP            use strip tool STRIP [$strip_default]
 325   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 326   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 327   --cc=CC                  use C compiler CC [$cc_default]
 328   --cxx=CXX                use C compiler CXX [$cxx_default]
 329   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 330   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 331   --ld=LD                  use linker LD [$ld_default]
 332   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 333   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 334   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 335   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 336   --host-cc=HOSTCC         use host C compiler HOSTCC
 337   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 338   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 339   --host-ld=HOSTLD         use host linker HOSTLD
 340   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 341   --host-libs=HLIBS        use libs HLIBS when linking for host
 342   --host-os=OS             compiler host OS [$target_os]
 343   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 344   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 345   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 346   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 347   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 348   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 349   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 350   --extra-version=STRING   version string suffix []
 351   --optflags=OPTFLAGS      override optimization-related compiler flags
 352   --build-suffix=SUFFIX    library name suffix []
 353   --enable-pic             build position-independent code
 354   --enable-thumb           compile for Thumb instruction set
 355   --enable-lto             use link-time optimization
 356   --env="ENV=override"     override the environment variables
 357
 358 Advanced options (experts only):
 359   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 360   --custom-allocator=NAME  use a supported custom allocator
 361   --disable-symver         disable symbol versioning
 362   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 363   --disable-safe-bitstream-reader
 364                            disable buffer boundary checking in bitreaders
 365                            (faster, but may crash)
 366   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 367   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 368
 369 Optimization options (experts only):
 370   --disable-asm            disable all assembly optimizations
 371   --disable-altivec        disable AltiVec optimizations
 372   --disable-vsx            disable VSX optimizations
 373   --disable-power8         disable POWER8 optimizations
 374   --disable-amd3dnow       disable 3DNow! optimizations
 375   --disable-amd3dnowext    disable 3DNow! extended optimizations
 376   --disable-mmx            disable MMX optimizations
 377   --disable-mmxext         disable MMXEXT optimizations
 378   --disable-sse            disable SSE optimizations
 379   --disable-sse2           disable SSE2 optimizations
 380   --disable-sse3           disable SSE3 optimizations
 381   --disable-ssse3          disable SSSE3 optimizations
 382   --disable-sse4           disable SSE4 optimizations
 383   --disable-sse42          disable SSE4.2 optimizations
 384   --disable-avx            disable AVX optimizations
 385   --disable-xop            disable XOP optimizations
 386   --disable-fma3           disable FMA3 optimizations
 387   --disable-fma4           disable FMA4 optimizations
 388   --disable-avx2           disable AVX2 optimizations
 389   --disable-aesni          disable AESNI optimizations
 390   --disable-armv5te        disable armv5te optimizations
 391   --disable-armv6          disable armv6 optimizations
 392   --disable-armv6t2        disable armv6t2 optimizations
 393   --disable-vfp            disable VFP optimizations
 394   --disable-neon           disable NEON optimizations
 395   --disable-inline-asm     disable use of inline assembly
 396   --disable-yasm           disable use of nasm/yasm assembly
 397   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 398   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 399   --disable-msa            disable MSA optimizations
 400   --disable-mipsfpu        disable floating point MIPS optimizations
 401   --disable-mmi            disable Loongson SIMD optimizations
 402   --disable-fast-unaligned consider unaligned accesses slow
 403
 404 Developer options (useful when working on FFmpeg itself):
 405   --disable-debug          disable debugging symbols
 406   --enable-debug=LEVEL     set the debug level [$debuglevel]
 407   --disable-optimizations  disable compiler optimizations
 408   --enable-extra-warnings  enable more compiler warnings
 409   --disable-stripping      disable stripping of executables and shared libraries
 410   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 411                            2 causes a slowdown at runtime.
 412   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 413   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 414                            leaks and errors, using the specified valgrind binary.
 415                            Cannot be combined with --target-exec
 416   --enable-ftrapv          Trap arithmetic overflows
 417   --samples=PATH           location of test samples for FATE, if not set use
 418                            \$FATE_SAMPLES at make invocation time.
 419   --enable-neon-clobber-test check NEON registers for clobbering (should be
 420                            used only for debugging purposes)
 421   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 422                            should be used only for debugging purposes)
 423   --enable-random          randomly enable/disable components
 424   --disable-random
 425   --enable-random=LIST     randomly enable/disable specific components or
 426   --disable-random=LIST    component groups. LIST is a comma-separated list
 427                            of NAME[:PROB] entries where NAME is a component
 428                            (group) and PROB the probability associated with
 429                            NAME (default 0.5).
 430   --random-seed=VALUE      seed value for --enable/disable-random
 431   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 432                            (only applies to --disable-optimizations builds)
 433
 434 NOTE: Object files are built at the place where configure is launched.
 435 EOF
 436   exit 0
 437 }
 438
 439 quotes='""'
 440 if test -t 1 && which tput >/dev/null 2>&1; then
 441     ncolors=$(tput colors)
 442     if test -n "$ncolors" && test $ncolors -ge 8; then
 443         bold_color=$(tput bold)
 444         warn_color=$(tput setaf 3)
 445         error_color=$(tput setaf 1)
 446         reset_color=$(tput sgr0)
 447     fi
 448     # 72 used instead of 80 since that's the default of pr
 449     ncols=$(tput cols)
 450 fi
 451 : ${ncols:=72}
 452
 453 log(){
 454     echo "$@" >> $logfile
 455 }
 456
 457 log_file(){
 458     log BEGIN $1
 459     pr -n -t $1 >> $logfile
 460     log END $1
 461 }
 462
 463 warn(){
 464     log "WARNING: $*"
 465     WARNINGS="${WARNINGS}WARNING: $*\n"
 466 }
 467
 468 die(){
 469     log "$@"
 470     echo "$error_color$bold_color$@$reset_color"
 471     cat <<EOF
 472
 473 If you think configure made a mistake, make sure you are using the latest
 474 version from Git.  If the latest version fails, report the problem to the
 475 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 476 EOF
 477     if disabled logging; then
 478         cat <<EOF
 479 Rerun configure with logging enabled (do not use --disable-logging), and
 480 include the log this produces with your report.
 481 EOF
 482     else
 483         cat <<EOF
 484 Include the log file "$logfile" produced by configure as this will help
 485 solve the problem.
 486 EOF
 487     fi
 488     exit 1
 489 }
 490
 491 # Avoid locale weirdness, besides we really just want to translate ASCII.
 492 toupper(){
 493     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 494 }
 495
 496 tolower(){
 497     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 498 }
 499
 500 c_escape(){
 501     echo "$*" | sed 's/["\\]/\\\0/g'
 502 }
 503
 504 sh_quote(){
 505     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 506     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 507     echo "$v"
 508 }
 509
 510 cleanws(){
 511     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 512 }
 513
 514 filter(){
 515     pat=$1
 516     shift
 517     for v; do
 518         eval "case $v in $pat) echo $v ;; esac"
 519     done
 520 }
 521
 522 filter_out(){
 523     pat=$1
 524     shift
 525     for v; do
 526         eval "case $v in $pat) ;; *) echo $v ;; esac"
 527     done
 528 }
 529
 530 map(){
 531     m=$1
 532     shift
 533     for v; do eval $m; done
 534 }
 535
 536 add_suffix(){
 537     suffix=$1
 538     shift
 539     for v; do echo ${v}${suffix}; done
 540 }
 541
 542 set_all(){
 543     value=$1
 544     shift
 545     for var in $*; do
 546         eval $var=$value
 547     done
 548 }
 549
 550 set_weak(){
 551     value=$1
 552     shift
 553     for var; do
 554         eval : \${$var:=$value}
 555     done
 556 }
 557
 558 sanitize_var_name(){
 559     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 560 }
 561
 562 set_safe(){
 563     var=$1
 564     shift
 565     eval $(sanitize_var_name "$var")='$*'
 566 }
 567
 568 get_safe(){
 569     eval echo \$$(sanitize_var_name "$1")
 570 }
 571
 572 pushvar(){
 573     for pvar in $*; do
 574         eval level=\${${pvar}_level:=0}
 575         eval ${pvar}_${level}="\$$pvar"
 576         eval ${pvar}_level=$(($level+1))
 577     done
 578 }
 579
 580 popvar(){
 581     for pvar in $*; do
 582         eval level=\${${pvar}_level:-0}
 583         test $level = 0 && continue
 584         eval level=$(($level-1))
 585         eval $pvar="\${${pvar}_${level}}"
 586         eval ${pvar}_level=$level
 587         eval unset ${pvar}_${level}
 588     done
 589 }
 590
 591 enable(){
 592     set_all yes $*
 593 }
 594
 595 disable(){
 596     set_all no $*
 597 }
 598
 599 enable_weak(){
 600     set_weak yes $*
 601 }
 602
 603 disable_weak(){
 604     set_weak no $*
 605 }
 606
 607 enable_safe(){
 608     for var; do
 609         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 610     done
 611 }
 612
 613 disable_safe(){
 614     for var; do
 615         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 616     done
 617 }
 618
 619 do_enable_deep(){
 620     for var; do
 621         enabled $var && continue
 622         eval sel="\$${var}_select"
 623         eval sgs="\$${var}_suggest"
 624         pushvar var sgs
 625         enable_deep $sel
 626         popvar sgs
 627         enable_deep_weak $sgs
 628         popvar var
 629     done
 630 }
 631
 632 enable_deep(){
 633     do_enable_deep $*
 634     enable $*
 635 }
 636
 637 enable_deep_weak(){
 638     for var; do
 639         disabled $var && continue
 640         pushvar var
 641         do_enable_deep $var
 642         popvar var
 643         enable_weak $var
 644     done
 645 }
 646
 647 enabled(){
 648     test "${1#!}" = "$1" && op='=' || op=!=
 649     eval test "x\$${1#!}" $op "xyes"
 650 }
 651
 652 disabled(){
 653     test "${1#!}" = "$1" && op='=' || op=!=
 654     eval test "x\$${1#!}" $op "xno"
 655 }
 656
 657 enabled_all(){
 658     for opt; do
 659         enabled $opt || return 1
 660     done
 661 }
 662
 663 disabled_all(){
 664     for opt; do
 665         disabled $opt || return 1
 666     done
 667 }
 668
 669 enabled_any(){
 670     for opt; do
 671         enabled $opt && return 0
 672     done
 673 }
 674
 675 disabled_any(){
 676     for opt; do
 677         disabled $opt && return 0
 678     done
 679     return 1
 680 }
 681
 682 set_default(){
 683     for opt; do
 684         eval : \${$opt:=\$${opt}_default}
 685     done
 686 }
 687
 688 is_in(){
 689     value=$1
 690     shift
 691     for var in $*; do
 692         [ $var = $value ] && return 0
 693     done
 694     return 1
 695 }
 696
 697 do_check_deps(){
 698     for cfg; do
 699         cfg="${cfg#!}"
 700         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 701         disabled ${cfg}_checking && continue
 702         enable ${cfg}_checking
 703         append allopts $cfg
 704
 705         eval dep_all="\$${cfg}_deps"
 706         eval dep_any="\$${cfg}_deps_any"
 707         eval dep_sel="\$${cfg}_select"
 708         eval dep_sgs="\$${cfg}_suggest"
 709         eval dep_ifa="\$${cfg}_if"
 710         eval dep_ifn="\$${cfg}_if_any"
 711
 712         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 713         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 714         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 715
 716         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 717         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 718         enabled_all  $dep_all || disable $cfg
 719         enabled_any  $dep_any || disable $cfg
 720         disabled_any $dep_sel && disable $cfg
 721
 722         if enabled $cfg; then
 723             enable_deep $dep_sel
 724             enable_deep_weak $dep_sgs
 725         fi
 726
 727         disable ${cfg}_checking
 728     done
 729 }
 730
 731 check_deps(){
 732     unset allopts
 733
 734     do_check_deps "$@"
 735
 736     for cfg in $allopts; do
 737         enabled $cfg || continue
 738         eval dep_extralibs="\$${cfg}_extralibs"
 739         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 740     done
 741 }
 742
 743 print_config(){
 744     pfx=$1
 745     files=$2
 746     shift 2
 747     map 'eval echo "$v \${$v:-no}"' "$@" |
 748     awk "BEGIN { split(\"$files\", files) }
 749         {
 750             c = \"$pfx\" toupper(\$1);
 751             v = \$2;
 752             sub(/yes/, 1, v);
 753             sub(/no/,  0, v);
 754             for (f in files) {
 755                 file = files[f];
 756                 if (file ~ /\\.h\$/) {
 757                     printf(\"#define %s %d\\n\", c, v) >>file;
 758                 } else if (file ~ /\\.asm\$/) {
 759                     printf(\"%%define %s %d\\n\", c, v) >>file;
 760                 } else if (file ~ /\\.mak\$/) {
 761                     n = -v ? \"\" : \"!\";
 762                     printf(\"%s%s=yes\\n\", n, c) >>file;
 763                 } else if (file ~ /\\.texi\$/) {
 764                     pre = -v ? \"\" : \"@c \";
 765                     yesno = \$2;
 766                     c2 = tolower(c);
 767                     gsub(/_/, \"-\", c2);
 768                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 769                 }
 770             }
 771         }"
 772 }
 773
 774 print_enabled(){
 775     suf=$1
 776     shift
 777     for v; do
 778         enabled $v && printf "%s\n" ${v%$suf}
 779     done
 780 }
 781
 782 append(){
 783     var=$1
 784     shift
 785     eval "$var=\"\$$var $*\""
 786 }
 787
 788 prepend(){
 789     var=$1
 790     shift
 791     eval "$var=\"$* \$$var\""
 792 }
 793
 794 unique(){
 795     var=$1
 796     uniq_list=""
 797     for tok in $(eval echo \$$var); do
 798         uniq_list="$(filter_out $tok $uniq_list) $tok"
 799     done
 800     eval "$var=\"${uniq_list}\""
 801 }
 802
 803 add_cppflags(){
 804     append CPPFLAGS "$@"
 805 }
 806
 807 add_cflags(){
 808     append CFLAGS $($cflags_filter "$@")
 809 }
 810
 811 add_cxxflags(){
 812     append CXXFLAGS $($cflags_filter "$@")
 813 }
 814
 815 add_asflags(){
 816     append ASFLAGS $($asflags_filter "$@")
 817 }
 818
 819 add_objcflags(){
 820     append OBJCFLAGS $($objcflags_filter "$@")
 821 }
 822
 823 add_ldflags(){
 824     append LDFLAGS $($ldflags_filter "$@")
 825 }
 826
 827 add_ldexeflags(){
 828     append LDEXEFLAGS $($ldflags_filter "$@")
 829 }
 830
 831 add_ldlibflags(){
 832     append LDLIBFLAGS $($ldflags_filter "$@")
 833 }
 834
 835 add_stripflags(){
 836     append ASMSTRIPFLAGS "$@"
 837 }
 838
 839 add_extralibs(){
 840     prepend extralibs $($ldflags_filter "$@")
 841 }
 842
 843 add_host_cppflags(){
 844     append host_cppflags "$@"
 845 }
 846
 847 add_host_cflags(){
 848     append host_cflags $($host_cflags_filter "$@")
 849 }
 850
 851 add_host_ldflags(){
 852     append host_ldflags $($host_ldflags_filter "$@")
 853 }
 854
 855 add_compat(){
 856     append compat_objs $1
 857     shift
 858     map 'add_cppflags -D$v' "$@"
 859 }
 860
 861 check_cmd(){
 862     log "$@"
 863     "$@" >> $logfile 2>&1
 864 }
 865
 866 check_stat(){
 867     log check_stat "$@"
 868     stat "$1" >> $logfile 2>&1
 869 }
 870
 871 cc_o(){
 872     eval printf '%s\\n' $CC_O
 873 }
 874
 875 cc_e(){
 876     eval printf '%s\\n' $CC_E
 877 }
 878
 879 check_cc(){
 880     log check_cc "$@"
 881     cat > $TMPC
 882     log_file $TMPC
 883     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 884 }
 885
 886 check_cxx(){
 887     log check_cxx "$@"
 888     cat > $TMPCPP
 889     log_file $TMPCPP
 890     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 891 }
 892
 893 check_objcc(){
 894     log check_objcc "$@"
 895     cat > $TMPM
 896     log_file $TMPM
 897     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 898 }
 899
 900 check_cpp(){
 901     log check_cpp "$@"
 902     cat > $TMPC
 903     log_file $TMPC
 904     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 905 }
 906
 907 as_o(){
 908     eval printf '%s\\n' $AS_O
 909 }
 910
 911 check_as(){
 912     log check_as "$@"
 913     cat > $TMPS
 914     log_file $TMPS
 915     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 916 }
 917
 918 check_inline_asm(){
 919     log check_inline_asm "$@"
 920     name="$1"
 921     code="$2"
 922     shift 2
 923     disable $name
 924     check_cc "$@" <<EOF && enable $name
 925 void foo(void){ __asm__ volatile($code); }
 926 EOF
 927 }
 928
 929 check_inline_asm_flags(){
 930     log check_inline_asm_flags "$@"
 931     name="$1"
 932     code="$2"
 933     flags=''
 934     shift 2
 935     while [ "$1" != "" ]; do
 936       append flags $1
 937       shift
 938     done;
 939     disable $name
 940     cat > $TMPC <<EOF
 941 void foo(void){ __asm__ volatile($code); }
 942 EOF
 943     log_file $TMPC
 944     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 945     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 946 }
 947
 948 check_insn(){
 949     log check_insn "$@"
 950     check_inline_asm ${1}_inline "\"$2\""
 951     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 952 }
 953
 954 check_yasm(){
 955     log check_yasm "$@"
 956     echo "$1" > $TMPS
 957     log_file $TMPS
 958     shift 1
 959     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 960 }
 961
 962 ld_o(){
 963     eval printf '%s\\n' $LD_O
 964 }
 965
 966 check_ld(){
 967     log check_ld "$@"
 968     type=$1
 969     shift 1
 970     flags=$(filter_out '-l*|*.so' $@)
 971     libs=$(filter '-l*|*.so' $@)
 972     check_$type $($cflags_filter $flags) || return
 973     flags=$($ldflags_filter $flags)
 974     libs=$($ldflags_filter $libs)
 975     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 976 }
 977
 978 print_include(){
 979     hdr=$1
 980     test "${hdr%.h}" = "${hdr}" &&
 981         echo "#include $hdr"    ||
 982         echo "#include <$hdr>"
 983 }
 984
 985 check_code(){
 986     log check_code "$@"
 987     check=$1
 988     headers=$2
 989     code=$3
 990     shift 3
 991     {
 992         for hdr in $headers; do
 993             print_include $hdr
 994         done
 995         echo "int main(void) { $code; return 0; }"
 996     } | check_$check "$@"
 997 }
 998
 999 check_cppflags(){
1000     log check_cppflags "$@"
1001     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1002 int x;
1003 EOF
1004 }
1005
1006 test_cflags(){
1007     log test_cflags "$@"
1008     set -- $($cflags_filter "$@")
1009     check_cc "$@" <<EOF
1010 int x;
1011 EOF
1012 }
1013
1014 check_cflags(){
1015     log check_cflags "$@"
1016     test_cflags "$@" && add_cflags "$@"
1017 }
1018
1019 check_cxxflags(){
1020     log check_cxxflags "$@"
1021     set -- $($cflags_filter "$@")
1022     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1023 int x;
1024 EOF
1025 }
1026
1027 test_objcflags(){
1028     log test_cflags "$@"
1029     set -- $($cflags_filter "$@")
1030     check_objcc "$@" <<EOF
1031 int x;
1032 EOF
1033 }
1034
1035 check_objcflags(){
1036     log check_cflags "$@"
1037     test_objcflags "$@" && add_objcflags "$@"
1038 }
1039
1040 test_ldflags(){
1041     log test_ldflags "$@"
1042     check_ld "cc" "$@" <<EOF
1043 int main(void){ return 0; }
1044 EOF
1045 }
1046
1047 check_ldflags(){
1048     log check_ldflags "$@"
1049     test_ldflags "$@" && add_ldflags "$@"
1050 }
1051
1052 test_stripflags(){
1053     log test_stripflags "$@"
1054     # call check_cc to get a fresh TMPO
1055     check_cc <<EOF
1056 int main(void) { return 0; }
1057 EOF
1058     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1059 }
1060
1061 check_stripflags(){
1062     log check_stripflags "$@"
1063     test_stripflags "$@" && add_stripflags "$@"
1064 }
1065
1066 check_header(){
1067     log check_header "$@"
1068     header=$1
1069     shift
1070     disable_safe $header
1071     check_cpp "$@" <<EOF && enable_safe $header
1072 #include <$header>
1073 int x;
1074 EOF
1075 }
1076
1077 check_header_objcc(){
1078     log check_header_objcc "$@"
1079     rm -f -- "$TMPO"
1080     header=$1
1081     shift
1082     disable_safe $header
1083     {
1084        echo "#include <$header>"
1085        echo "int main(void) { return 0; }"
1086     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1087 }
1088
1089 check_func(){
1090     log check_func "$@"
1091     func=$1
1092     shift
1093     disable $func
1094     check_ld "cc" "$@" <<EOF && enable $func
1095 extern int $func();
1096 int main(void){ $func(); }
1097 EOF
1098 }
1099
1100 check_complexfunc(){
1101     log check_complexfunc "$@"
1102     func=$1
1103     narg=$2
1104     shift 2
1105     test $narg = 2 && args="f, g" || args="f * I"
1106     disable $func
1107     check_ld "cc" "$@" <<EOF && enable $func
1108 #include <complex.h>
1109 #include <math.h>
1110 float foo(complex float f, complex float g) { return $func($args); }
1111 int main(void){ return (int) foo; }
1112 EOF
1113 }
1114
1115 check_mathfunc(){
1116     log check_mathfunc "$@"
1117     func=$1
1118     narg=$2
1119     shift 2
1120     test $narg = 2 && args="f, g" || args="f"
1121     disable $func
1122     check_ld "cc" "$@" <<EOF && enable $func
1123 #include <math.h>
1124 float foo(float f, float g) { return $func($args); }
1125 int main(void){ return (int) foo; }
1126 EOF
1127 }
1128
1129 check_func_headers(){
1130     log check_func_headers "$@"
1131     headers=$1
1132     funcs=$2
1133     shift 2
1134     {
1135         for hdr in $headers; do
1136             print_include $hdr
1137         done
1138         for func in $funcs; do
1139             echo "long check_$func(void) { return (long) $func; }"
1140         done
1141         echo "int main(void) { return 0; }"
1142     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1143 }
1144
1145 check_class_headers_cpp(){
1146     log check_class_headers_cpp "$@"
1147     headers=$1
1148     classes=$2
1149     shift 2
1150     {
1151         for hdr in $headers; do
1152             echo "#include <$hdr>"
1153         done
1154         echo "int main(void) { "
1155         i=1
1156         for class in $classes; do
1157             echo "$class obj$i;"
1158             i=$(expr $i + 1)
1159         done
1160         echo "return 0; }"
1161     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1162 }
1163
1164 check_cpp_condition(){
1165     log check_cpp_condition "$@"
1166     header=$1
1167     condition=$2
1168     shift 2
1169     check_cpp "$@" <<EOF
1170 #include <$header>
1171 #if !($condition)
1172 #error "unsatisfied condition: $condition"
1173 #endif
1174 EOF
1175 }
1176
1177 check_lib(){
1178     log check_lib "$@"
1179     header="$1"
1180     func="$2"
1181     shift 2
1182     check_header $header && check_func $func "$@" && add_extralibs "$@"
1183 }
1184
1185 check_lib2(){
1186     log check_lib2 "$@"
1187     headers="$1"
1188     funcs="$2"
1189     shift 2
1190     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1191 }
1192
1193 check_lib_cpp(){
1194     log check_lib_cpp "$@"
1195     headers="$1"
1196     classes="$2"
1197     shift 2
1198     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1199 }
1200
1201 check_pkg_config(){
1202     log check_pkg_config "$@"
1203     pkgandversion="$1"
1204     pkg="${1%% *}"
1205     headers="$2"
1206     funcs="$3"
1207     shift 3
1208     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1209     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1210     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1211     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1212         set_safe "${pkg}_cflags" $pkg_cflags   &&
1213         set_safe "${pkg}_libs"   $pkg_libs
1214 }
1215
1216 check_exec(){
1217     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1218 }
1219
1220 check_exec_crash(){
1221     code=$(cat)
1222
1223     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1224     # are safe but may not be available everywhere.  Thus we use
1225     # raise(SIGTERM) instead.  The check is run in a subshell so we
1226     # can redirect the "Terminated" message from the shell.  SIGBUS
1227     # is not defined by standard C so it is used conditionally.
1228
1229     (check_exec "$@") >> $logfile 2>&1 <<EOF
1230 #include <signal.h>
1231 static void sighandler(int sig){
1232     raise(SIGTERM);
1233 }
1234 int foo(void){
1235     $code
1236 }
1237 int (*func_ptr)(void) = foo;
1238 int main(void){
1239     signal(SIGILL, sighandler);
1240     signal(SIGFPE, sighandler);
1241     signal(SIGSEGV, sighandler);
1242 #ifdef SIGBUS
1243     signal(SIGBUS, sighandler);
1244 #endif
1245     return func_ptr();
1246 }
1247 EOF
1248 }
1249
1250 check_type(){
1251     log check_type "$@"
1252     headers=$1
1253     type=$2
1254     shift 2
1255     disable_safe "$type"
1256     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1257 }
1258
1259 check_struct(){
1260     log check_struct "$@"
1261     headers=$1
1262     struct=$2
1263     member=$3
1264     shift 3
1265     disable_safe "${struct}_${member}"
1266     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1267         enable_safe "${struct}_${member}"
1268 }
1269
1270 check_builtin(){
1271     log check_builtin "$@"
1272     name=$1
1273     headers=$2
1274     builtin=$3
1275     shift 3
1276     disable "$name"
1277     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1278 }
1279
1280 check_compile_assert(){
1281     log check_compile_assert "$@"
1282     name=$1
1283     headers=$2
1284     condition=$3
1285     shift 3
1286     disable "$name"
1287     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1288 }
1289
1290 require(){
1291     name="$1"
1292     header="$2"
1293     func="$3"
1294     shift 3
1295     check_lib $header $func "$@" || die "ERROR: $name not found"
1296 }
1297
1298 require2(){
1299     name="$1"
1300     headers="$2"
1301     func="$3"
1302     shift 3
1303     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1304 }
1305
1306 require_cpp(){
1307     name="$1"
1308     headers="$2"
1309     classes="$3"
1310     shift 3
1311     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1312 }
1313
1314 use_pkg_config(){
1315     pkg="$1"
1316     check_pkg_config "$@" || return 1
1317     add_cflags    $(get_safe "${pkg}_cflags")
1318     add_extralibs $(get_safe "${pkg}_libs")
1319 }
1320
1321 require_pkg_config(){
1322     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1323 }
1324
1325 require_libfreetype(){
1326     log require_libfreetype "$@"
1327     pkg="freetype2"
1328     check_cmd $pkg_config --exists --print-errors $pkg \
1329       || die "ERROR: $pkg not found"
1330     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1331     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1332     {
1333         echo "#include <ft2build.h>"
1334         echo "#include FT_FREETYPE_H"
1335         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1336         echo "int main(void) { return 0; }"
1337     } | check_ld "cc" $pkg_cflags $pkg_libs \
1338       && set_safe "${pkg}_cflags" $pkg_cflags \
1339       && set_safe "${pkg}_libs"   $pkg_libs \
1340       || die "ERROR: $pkg not found"
1341     add_cflags    $(get_safe "${pkg}_cflags")
1342     add_extralibs $(get_safe "${pkg}_libs")
1343 }
1344
1345 hostcc_e(){
1346     eval printf '%s\\n' $HOSTCC_E
1347 }
1348
1349 hostcc_o(){
1350     eval printf '%s\\n' $HOSTCC_O
1351 }
1352
1353 check_host_cc(){
1354     log check_host_cc "$@"
1355     cat > $TMPC
1356     log_file $TMPC
1357     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1358 }
1359
1360 check_host_cpp(){
1361     log check_host_cpp "$@"
1362     cat > $TMPC
1363     log_file $TMPC
1364     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1365 }
1366
1367 check_host_cppflags(){
1368     log check_host_cppflags "$@"
1369     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1370 int x;
1371 EOF
1372 }
1373
1374 check_host_cflags(){
1375     log check_host_cflags "$@"
1376     set -- $($host_cflags_filter "$@")
1377     check_host_cc "$@" <<EOF && append host_cflags "$@"
1378 int x;
1379 EOF
1380 }
1381
1382 check_host_cpp_condition(){
1383     log check_host_cpp_condition "$@"
1384     header=$1
1385     condition=$2
1386     shift 2
1387     check_host_cpp "$@" <<EOF
1388 #include <$header>
1389 #if !($condition)
1390 #error "unsatisfied condition: $condition"
1391 #endif
1392 EOF
1393 }
1394
1395 cp_if_changed(){
1396     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1397     mkdir -p "$(dirname $2)"
1398     $cp_f "$1" "$2"
1399 }
1400
1401 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1402 # system-dependent things.
1403
1404 AVCODEC_COMPONENTS="
1405     bsfs
1406     decoders
1407     encoders
1408     hwaccels
1409     parsers
1410 "
1411
1412 AVDEVICE_COMPONENTS="
1413     indevs
1414     outdevs
1415 "
1416 AVFILTER_COMPONENTS="
1417     filters
1418 "
1419 AVFORMAT_COMPONENTS="
1420     demuxers
1421     muxers
1422     protocols
1423 "
1424
1425 AVRESAMPLE_COMPONENTS=""
1426 AVUTIL_COMPONENTS=""
1427
1428 COMPONENT_LIST="
1429     $AVCODEC_COMPONENTS
1430     $AVDEVICE_COMPONENTS
1431     $AVFILTER_COMPONENTS
1432     $AVFORMAT_COMPONENTS
1433     $AVRESAMPLE_COMPONENTS
1434     $AVUTIL_COMPONENTS
1435 "
1436
1437 EXAMPLE_LIST="
1438     avio_reading_example
1439     avio_dir_cmd_example
1440     decoding_encoding_example
1441     demuxing_decoding_example
1442     extract_mvs_example
1443     filter_audio_example
1444     filtering_audio_example
1445     filtering_video_example
1446     metadata_example
1447     muxing_example
1448     qsvdec_example
1449     remuxing_example
1450     resampling_audio_example
1451     scaling_video_example
1452     transcode_aac_example
1453     transcoding_example
1454 "
1455
1456 EXTERNAL_LIBRARY_LIST="
1457     audiotoolbox
1458     avisynth
1459     bzlib
1460     chromaprint
1461     crystalhd
1462     decklink
1463     frei0r
1464     gcrypt
1465     gmp
1466     gnutls
1467     iconv
1468     jni
1469     ladspa
1470     libass
1471     libbluray
1472     libbs2b
1473     libcaca
1474     libcdio
1475     libcelt
1476     libdc1394
1477     libebur128
1478     libfaac
1479     libfdk_aac
1480     libflite
1481     libfontconfig
1482     libfreetype
1483     libfribidi
1484     libgme
1485     libgsm
1486     libiec61883
1487     libilbc
1488     libkvazaar
1489     libmodplug
1490     libmp3lame
1491     libnut
1492     libnpp
1493     libopencore_amrnb
1494     libopencore_amrwb
1495     libopencv
1496     libopenh264
1497     libopenjpeg
1498     libopus
1499     libpulse
1500     librtmp
1501     librubberband
1502     libschroedinger
1503     libshine
1504     libsmbclient
1505     libsnappy
1506     libsoxr
1507     libspeex
1508     libssh
1509     libtesseract
1510     libtheora
1511     libtwolame
1512     libutvideo
1513     libv4l2
1514     libvidstab
1515     libvo_amrwbenc
1516     libvorbis
1517     libvpx
1518     libwavpack
1519     libwebp
1520     libx264
1521     libx265
1522     libxavs
1523     libxcb
1524     libxcb_shm
1525     libxcb_shape
1526     libxcb_xfixes
1527     libxvid
1528     libzimg
1529     libzmq
1530     libzvbi
1531     lzma
1532     mediacodec
1533     netcdf
1534     openal
1535     opencl
1536     opengl
1537     openssl
1538     schannel
1539     sdl
1540     securetransport
1541     videotoolbox
1542     x11grab
1543     xlib
1544     zlib
1545 "
1546
1547 DOCUMENT_LIST="
1548     doc
1549     htmlpages
1550     manpages
1551     podpages
1552     txtpages
1553 "
1554
1555 FEATURE_LIST="
1556     ftrapv
1557     gray
1558     hardcoded_tables
1559     omx_rpi
1560     runtime_cpudetect
1561     safe_bitstream_reader
1562     shared
1563     small
1564     static
1565     swscale_alpha
1566 "
1567
1568 HW_CODECS_LIST="
1569     cuda
1570     libmfx
1571     mmal
1572     nvenc
1573     omx
1574 "
1575
1576 HWACCEL_LIST="
1577     d3d11va
1578     dxva2
1579     vaapi
1580     vda
1581     vdpau
1582     videotoolbox_hwaccel
1583     xvmc
1584 "
1585
1586 LIBRARY_LIST="
1587     avcodec
1588     avdevice
1589     avfilter
1590     avformat
1591     avresample
1592     avutil
1593     postproc
1594     swresample
1595     swscale
1596 "
1597
1598 LICENSE_LIST="
1599     gpl
1600     nonfree
1601     version3
1602 "
1603
1604 PROGRAM_LIST="
1605     ffplay
1606     ffprobe
1607     ffserver
1608     ffmpeg
1609 "
1610
1611 SUBSYSTEM_LIST="
1612     dct
1613     dwt
1614     error_resilience
1615     faan
1616     fast_unaligned
1617     fft
1618     lsp
1619     lzo
1620     mdct
1621     pixelutils
1622     network
1623     rdft
1624 "
1625
1626 CONFIG_LIST="
1627     $COMPONENT_LIST
1628     $DOCUMENT_LIST
1629     $EXAMPLE_LIST
1630     $EXTERNAL_LIBRARY_LIST
1631     $FEATURE_LIST
1632     $HW_CODECS_LIST
1633     $HWACCEL_LIST
1634     $LICENSE_LIST
1635     $LIBRARY_LIST
1636     $PROGRAM_LIST
1637     $SUBSYSTEM_LIST
1638     fontconfig
1639     incompatible_libav_abi
1640     memalign_hack
1641     memory_poisoning
1642     neon_clobber_test
1643     pic
1644     pod2man
1645     raise_major
1646     thumb
1647     valgrind_backtrace
1648     xmm_clobber_test
1649 "
1650
1651 THREADS_LIST="
1652     pthreads
1653     os2threads
1654     w32threads
1655 "
1656
1657 ATOMICS_LIST="
1658     atomics_gcc
1659     atomics_suncc
1660     atomics_win32
1661 "
1662
1663 ARCH_LIST="
1664     aarch64
1665     alpha
1666     arm
1667     avr32
1668     avr32_ap
1669     avr32_uc
1670     bfin
1671     ia64
1672     m68k
1673     mips
1674     mips64
1675     parisc
1676     ppc
1677     ppc64
1678     s390
1679     sh4
1680     sparc
1681     sparc64
1682     tilegx
1683     tilepro
1684     tomi
1685     x86
1686     x86_32
1687     x86_64
1688 "
1689
1690 ARCH_EXT_LIST_ARM="
1691     armv5te
1692     armv6
1693     armv6t2
1694     armv8
1695     neon
1696     vfp
1697     vfpv3
1698     setend
1699 "
1700
1701 ARCH_EXT_LIST_MIPS="
1702     mipsfpu
1703     mips32r2
1704     mips32r5
1705     mips64r2
1706     mips32r6
1707     mips64r6
1708     mipsdsp
1709     mipsdspr2
1710     msa
1711 "
1712
1713 ARCH_EXT_LIST_LOONGSON="
1714     loongson2
1715     loongson3
1716     mmi
1717 "
1718
1719 ARCH_EXT_LIST_X86_SIMD="
1720     aesni
1721     amd3dnow
1722     amd3dnowext
1723     avx
1724     avx2
1725     fma3
1726     fma4
1727     mmx
1728     mmxext
1729     sse
1730     sse2
1731     sse3
1732     sse4
1733     sse42
1734     ssse3
1735     xop
1736 "
1737
1738 ARCH_EXT_LIST_PPC="
1739     altivec
1740     dcbzl
1741     ldbrx
1742     power8
1743     ppc4xx
1744     vsx
1745 "
1746
1747 ARCH_EXT_LIST_X86="
1748     $ARCH_EXT_LIST_X86_SIMD
1749     cpunop
1750     i686
1751 "
1752
1753 ARCH_EXT_LIST="
1754     $ARCH_EXT_LIST_ARM
1755     $ARCH_EXT_LIST_PPC
1756     $ARCH_EXT_LIST_X86
1757     $ARCH_EXT_LIST_MIPS
1758     $ARCH_EXT_LIST_LOONGSON
1759 "
1760
1761 ARCH_FEATURES="
1762     aligned_stack
1763     fast_64bit
1764     fast_clz
1765     fast_cmov
1766     local_aligned_8
1767     local_aligned_16
1768     local_aligned_32
1769     simd_align_16
1770 "
1771
1772 BUILTIN_LIST="
1773     atomic_cas_ptr
1774     atomic_compare_exchange
1775     machine_rw_barrier
1776     MemoryBarrier
1777     mm_empty
1778     rdtsc
1779     sarestart
1780     sem_timedwait
1781     sync_val_compare_and_swap
1782 "
1783 HAVE_LIST_CMDLINE="
1784     inline_asm
1785     symver
1786     yasm
1787 "
1788
1789 HAVE_LIST_PUB="
1790     bigendian
1791     fast_unaligned
1792     incompatible_libav_abi
1793 "
1794
1795 HEADERS_LIST="
1796     alsa_asoundlib_h
1797     altivec_h
1798     arpa_inet_h
1799     asm_types_h
1800     cdio_paranoia_h
1801     cdio_paranoia_paranoia_h
1802     dispatch_dispatch_h
1803     dev_bktr_ioctl_bt848_h
1804     dev_bktr_ioctl_meteor_h
1805     dev_ic_bt8xx_h
1806     dev_video_bktr_ioctl_bt848_h
1807     dev_video_meteor_ioctl_meteor_h
1808     direct_h
1809     dirent_h
1810     dlfcn_h
1811     d3d11_h
1812     dxva_h
1813     ES2_gl_h
1814     gsm_h
1815     io_h
1816     mach_mach_time_h
1817     machine_ioctl_bt848_h
1818     machine_ioctl_meteor_h
1819     malloc_h
1820     opencv2_core_core_c_h
1821     openjpeg_2_1_openjpeg_h
1822     openjpeg_2_0_openjpeg_h
1823     openjpeg_1_5_openjpeg_h
1824     OpenGL_gl3_h
1825     poll_h
1826     sndio_h
1827     soundcard_h
1828     sys_mman_h
1829     sys_param_h
1830     sys_resource_h
1831     sys_select_h
1832     sys_soundcard_h
1833     sys_time_h
1834     sys_un_h
1835     sys_videoio_h
1836     termios_h
1837     udplite_h
1838     unistd_h
1839     valgrind_valgrind_h
1840     windows_h
1841     winsock2_h
1842 "
1843
1844 INTRINSICS_LIST="
1845     intrinsics_neon
1846 "
1847
1848 COMPLEX_FUNCS="
1849     cabs
1850     cexp
1851 "
1852
1853 MATH_FUNCS="
1854     atanf
1855     atan2f
1856     cbrt
1857     cbrtf
1858     copysign
1859     cosf
1860     erf
1861     exp2
1862     exp2f
1863     expf
1864     hypot
1865     isfinite
1866     isinf
1867     isnan
1868     ldexpf
1869     llrint
1870     llrintf
1871     log2
1872     log2f
1873     log10f
1874     lrint
1875     lrintf
1876     powf
1877     rint
1878     round
1879     roundf
1880     sinf
1881     trunc
1882     truncf
1883 "
1884
1885 SYSTEM_FUNCS="
1886     access
1887     aligned_malloc
1888     arc4random
1889     clock_gettime
1890     closesocket
1891     CommandLineToArgvW
1892     CoTaskMemFree
1893     CryptGenRandom
1894     dlopen
1895     fcntl
1896     flt_lim
1897     fork
1898     getaddrinfo
1899     gethrtime
1900     getopt
1901     GetProcessAffinityMask
1902     GetProcessMemoryInfo
1903     GetProcessTimes
1904     getrusage
1905     GetSystemTimeAsFileTime
1906     gettimeofday
1907     glob
1908     glXGetProcAddress
1909     gmtime_r
1910     inet_aton
1911     isatty
1912     jack_port_get_latency_range
1913     kbhit
1914     localtime_r
1915     lstat
1916     lzo1x_999_compress
1917     mach_absolute_time
1918     MapViewOfFile
1919     memalign
1920     mkstemp
1921     mmap
1922     mprotect
1923     nanosleep
1924     PeekNamedPipe
1925     posix_memalign
1926     pthread_cancel
1927     sched_getaffinity
1928     SetConsoleTextAttribute
1929     SetConsoleCtrlHandler
1930     setmode
1931     setrlimit
1932     Sleep
1933     strerror_r
1934     sysconf
1935     sysctl
1936     usleep
1937     UTGetOSTypeFromString
1938     VirtualAlloc
1939     wglGetProcAddress
1940 "
1941
1942 TOOLCHAIN_FEATURES="
1943     as_dn_directive
1944     as_func
1945     as_object_arch
1946     asm_mod_q
1947     attribute_may_alias
1948     attribute_packed
1949     ebp_available
1950     ebx_available
1951     gnu_as
1952     gnu_windres
1953     ibm_asm
1954     inline_asm_direct_symbol_refs
1955     inline_asm_labels
1956     inline_asm_nonlocal_labels
1957     pragma_deprecated
1958     rsync_contimeout
1959     symver_asm_label
1960     symver_gnu_asm
1961     vfp_args
1962     xform_asm
1963     xmm_clobbers
1964 "
1965
1966 TYPES_LIST="
1967     CONDITION_VARIABLE_Ptr
1968     socklen_t
1969     struct_addrinfo
1970     struct_group_source_req
1971     struct_ip_mreq_source
1972     struct_ipv6_mreq
1973     struct_msghdr_msg_flags
1974     struct_pollfd
1975     struct_rusage_ru_maxrss
1976     struct_sctp_event_subscribe
1977     struct_sockaddr_in6
1978     struct_sockaddr_sa_len
1979     struct_sockaddr_storage
1980     struct_stat_st_mtim_tv_nsec
1981     struct_v4l2_frmivalenum_discrete
1982 "
1983
1984 HAVE_LIST="
1985     $ARCH_EXT_LIST
1986     $(add_suffix _external $ARCH_EXT_LIST)
1987     $(add_suffix _inline   $ARCH_EXT_LIST)
1988     $ARCH_FEATURES
1989     $ATOMICS_LIST
1990     $BUILTIN_LIST
1991     $COMPLEX_FUNCS
1992     $HAVE_LIST_CMDLINE
1993     $HAVE_LIST_PUB
1994     $HEADERS_LIST
1995     $INTRINSICS_LIST
1996     $MATH_FUNCS
1997     $SYSTEM_FUNCS
1998     $THREADS_LIST
1999     $TOOLCHAIN_FEATURES
2000     $TYPES_LIST
2001     atomics_native
2002     dos_paths
2003     dxva2_lib
2004     dxva2api_cobj
2005     libc_msvcrt
2006     libdc1394_1
2007     libdc1394_2
2008     makeinfo
2009     makeinfo_html
2010     perl
2011     pod2man
2012     sdl
2013     section_data_rel_ro
2014     texi2html
2015     threads
2016     vaapi_drm
2017     vaapi_x11
2018     vdpau_x11
2019     winrt
2020     xlib
2021 "
2022
2023 # options emitted with CONFIG_ prefix but not available on the command line
2024 CONFIG_EXTRA="
2025     aandcttables
2026     ac3dsp
2027     audio_frame_queue
2028     audiodsp
2029     blockdsp
2030     bswapdsp
2031     cabac
2032     dirac_parse
2033     dvprofile
2034     exif
2035     faandct
2036     faanidct
2037     fdctdsp
2038     flacdsp
2039     fmtconvert
2040     frame_thread_encoder
2041     g722dsp
2042     golomb
2043     gplv3
2044     h263dsp
2045     h264chroma
2046     h264dsp
2047     h264pred
2048     h264qpel
2049     hpeldsp
2050     huffman
2051     huffyuvdsp
2052     huffyuvencdsp
2053     idctdsp
2054     iirfilter
2055     imdct15
2056     intrax8
2057     iso_media
2058     ividsp
2059     jpegtables
2060     lgplv3
2061     libx262
2062     llauddsp
2063     llviddsp
2064     lpc
2065     lzf
2066     me_cmp
2067     mpeg_er
2068     mpegaudio
2069     mpegaudiodsp
2070     mpegvideo
2071     mpegvideoenc
2072     mss34dsp
2073     pixblockdsp
2074     qpeldsp
2075     qsv
2076     qsvdec
2077     qsvenc
2078     rangecoder
2079     riffdec
2080     riffenc
2081     rtpdec
2082     rtpenc_chain
2083     rv34dsp
2084     sinewin
2085     snappy
2086     srtp
2087     startcode
2088     texturedsp
2089     texturedspenc
2090     tpeldsp
2091     vaapi_encode
2092     vc1dsp
2093     videodsp
2094     vp3dsp
2095     vp56dsp
2096     vp8dsp
2097     vt_bt2020
2098     wma_freqs
2099     wmv2dsp
2100 "
2101
2102 CMDLINE_SELECT="
2103     $ARCH_EXT_LIST
2104     $CONFIG_LIST
2105     $HAVE_LIST_CMDLINE
2106     $THREADS_LIST
2107     asm
2108     cross_compile
2109     debug
2110     extra_warnings
2111     logging
2112     lto
2113     optimizations
2114     rpath
2115     stripping
2116 "
2117
2118 PATHS_LIST="
2119     bindir
2120     datadir
2121     docdir
2122     incdir
2123     libdir
2124     mandir
2125     pkgconfigdir
2126     prefix
2127     shlibdir
2128     install_name_dir
2129 "
2130
2131 CMDLINE_SET="
2132     $PATHS_LIST
2133     ar
2134     arch
2135     as
2136     assert_level
2137     build_suffix
2138     cc
2139     objcc
2140     cpu
2141     cross_prefix
2142     custom_allocator
2143     cxx
2144     dep_cc
2145     doxygen
2146     env
2147     extra_version
2148     gas
2149     host_cc
2150     host_cflags
2151     host_ld
2152     host_ldflags
2153     host_libs
2154     host_os
2155     install
2156     ld
2157     ln_s
2158     logfile
2159     malloc_prefix
2160     nm
2161     optflags
2162     pkg_config
2163     pkg_config_flags
2164     progs_suffix
2165     random_seed
2166     ranlib
2167     samples
2168     strip
2169     sws_max_filter_size
2170     sysinclude
2171     sysroot
2172     target_exec
2173     target_os
2174     target_path
2175     target_samples
2176     tempprefix
2177     toolchain
2178     valgrind
2179     yasmexe
2180 "
2181
2182 CMDLINE_APPEND="
2183     extra_cflags
2184     extra_cxxflags
2185     extra_objcflags
2186     host_cppflags
2187 "
2188
2189 # code dependency declarations
2190
2191 # architecture extensions
2192
2193 armv5te_deps="arm"
2194 armv6_deps="arm"
2195 armv6t2_deps="arm"
2196 armv8_deps="aarch64"
2197 neon_deps_any="aarch64 arm"
2198 intrinsics_neon_deps="neon"
2199 vfp_deps_any="aarch64 arm"
2200 vfpv3_deps="vfp"
2201 setend_deps="arm"
2202
2203 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2204
2205 mipsfpu_deps="mips"
2206 mipsdsp_deps="mips"
2207 mipsdspr2_deps="mips"
2208 mips32r2_deps="mips"
2209 mips32r5_deps="mips"
2210 mips32r6_deps="mips"
2211 mips64r2_deps="mips"
2212 mips64r6_deps="mips"
2213 msa_deps="mipsfpu"
2214 mmi_deps="mips"
2215
2216 altivec_deps="ppc"
2217 dcbzl_deps="ppc"
2218 ldbrx_deps="ppc"
2219 ppc4xx_deps="ppc"
2220 vsx_deps="altivec"
2221 power8_deps="vsx"
2222
2223 cpunop_deps="i686"
2224 x86_64_select="i686"
2225 x86_64_suggest="fast_cmov"
2226
2227 amd3dnow_deps="mmx"
2228 amd3dnowext_deps="amd3dnow"
2229 i686_deps="x86"
2230 mmx_deps="x86"
2231 mmxext_deps="mmx"
2232 sse_deps="mmxext"
2233 sse2_deps="sse"
2234 sse3_deps="sse2"
2235 ssse3_deps="sse3"
2236 sse4_deps="ssse3"
2237 sse42_deps="sse4"
2238 aesni_deps="sse42"
2239 avx_deps="sse42"
2240 xop_deps="avx"
2241 fma3_deps="avx"
2242 fma4_deps="avx"
2243 avx2_deps="avx"
2244
2245 mmx_external_deps="yasm"
2246 mmx_inline_deps="inline_asm"
2247 mmx_suggest="mmx_external mmx_inline"
2248
2249 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2250     eval dep=\$${ext}_deps
2251     eval ${ext}_external_deps='"${dep}_external"'
2252     eval ${ext}_inline_deps='"${dep}_inline"'
2253     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2254 done
2255
2256 aligned_stack_if_any="aarch64 ppc x86"
2257 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2258 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2259 fast_unaligned_if_any="aarch64 ppc x86"
2260 simd_align_16_if_any="altivec neon sse"
2261
2262 # system capabilities
2263 symver_if_any="symver_asm_label symver_gnu_asm"
2264 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2265
2266 # threading support
2267 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2268 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2269 atomics_win32_if="MemoryBarrier"
2270 atomics_native_if_any="$ATOMICS_LIST"
2271 w32threads_deps="atomics_native"
2272 threads_if_any="$THREADS_LIST"
2273
2274 # subsystems
2275 dct_select="rdft"
2276 dirac_parse_select="golomb"
2277 error_resilience_select="me_cmp"
2278 faandct_deps="faan fdctdsp"
2279 faanidct_deps="faan idctdsp"
2280 h264dsp_select="startcode"
2281 frame_thread_encoder_deps="encoders threads"
2282 intrax8_select="blockdsp idctdsp"
2283 mdct_select="fft"
2284 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2285 mpeg_er_select="error_resilience"
2286 mpegaudio_select="mpegaudiodsp"
2287 mpegaudiodsp_select="dct"
2288 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2289 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2290 vc1dsp_select="h264chroma qpeldsp startcode"
2291 rdft_select="fft"
2292
2293 # decoders / encoders
2294 aac_decoder_select="imdct15 mdct sinewin"
2295 aac_fixed_decoder_select="mdct sinewin"
2296 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2297 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2298 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2299 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2300 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2301 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2302 adpcm_g722_decoder_select="g722dsp"
2303 adpcm_g722_encoder_select="g722dsp"
2304 aic_decoder_select="golomb idctdsp"
2305 alac_encoder_select="lpc"
2306 als_decoder_select="bswapdsp"
2307 amrnb_decoder_select="lsp"
2308 amrwb_decoder_select="lsp"
2309 amv_decoder_select="sp5x_decoder exif"
2310 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2311 ape_decoder_select="bswapdsp llauddsp"
2312 apng_decoder_select="zlib"
2313 apng_encoder_select="huffyuvencdsp zlib"
2314 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2315 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2316 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2317 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2318 atrac1_decoder_select="mdct sinewin"
2319 atrac3_decoder_select="mdct"
2320 atrac3p_decoder_select="mdct sinewin"
2321 avrn_decoder_select="exif jpegtables"
2322 bink_decoder_select="blockdsp hpeldsp"
2323 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2324 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2325 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2326 cllc_decoder_select="bswapdsp"
2327 comfortnoise_encoder_select="lpc"
2328 cook_decoder_select="audiodsp mdct sinewin"
2329 cscd_decoder_select="lzo"
2330 cscd_decoder_suggest="zlib"
2331 dca_decoder_select="mdct"
2332 dds_decoder_select="texturedsp"
2333 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2334 dnxhd_decoder_select="blockdsp idctdsp"
2335 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2336 dvvideo_decoder_select="dvprofile idctdsp"
2337 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2338 dxa_decoder_select="zlib"
2339 dxv_decoder_select="lzf texturedsp"
2340 eac3_decoder_select="ac3_decoder"
2341 eac3_encoder_select="ac3_encoder"
2342 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2343 eatgq_decoder_select="aandcttables"
2344 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2345 exr_decoder_select="zlib"
2346 ffv1_decoder_select="golomb rangecoder"
2347 ffv1_encoder_select="rangecoder"
2348 ffvhuff_decoder_select="huffyuv_decoder"
2349 ffvhuff_encoder_select="huffyuv_encoder"
2350 fic_decoder_select="golomb"
2351 flac_decoder_select="flacdsp golomb"
2352 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2353 flashsv2_decoder_select="zlib"
2354 flashsv2_encoder_select="zlib"
2355 flashsv_decoder_select="zlib"
2356 flashsv_encoder_select="zlib"
2357 flv_decoder_select="h263_decoder"
2358 flv_encoder_select="h263_encoder"
2359 fourxm_decoder_select="blockdsp bswapdsp"
2360 fraps_decoder_select="bswapdsp huffman"
2361 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2362 g729_decoder_select="audiodsp"
2363 h261_decoder_select="mpegvideo"
2364 h261_encoder_select="aandcttables mpegvideoenc"
2365 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2366 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2367 h263i_decoder_select="h263_decoder"
2368 h263p_decoder_select="h263_decoder"
2369 h263p_encoder_select="h263_encoder"
2370 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2371 h264_decoder_suggest="error_resilience"
2372 hap_decoder_select="snappy texturedsp"
2373 hap_encoder_deps="libsnappy"
2374 hap_encoder_select="texturedspenc"
2375 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2376 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2377 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2378 iac_decoder_select="imc_decoder"
2379 imc_decoder_select="bswapdsp fft mdct sinewin"
2380 indeo3_decoder_select="hpeldsp"
2381 indeo4_decoder_select="ividsp"
2382 indeo5_decoder_select="ividsp"
2383 interplay_video_decoder_select="hpeldsp"
2384 jpegls_decoder_select="golomb mjpeg_decoder"
2385 jpegls_encoder_select="golomb"
2386 jv_decoder_select="blockdsp"
2387 lagarith_decoder_select="huffyuvdsp"
2388 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2389 loco_decoder_select="golomb"
2390 magicyuv_decoder_select="huffyuvdsp"
2391 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2392 metasound_decoder_select="lsp mdct sinewin"
2393 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2394 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2395 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2396 mjpegb_decoder_select="mjpeg_decoder"
2397 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2398 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2399 mlp_decoder_select="mlp_parser"
2400 motionpixels_decoder_select="bswapdsp"
2401 mp1_decoder_select="mpegaudio"
2402 mp1float_decoder_select="mpegaudio"
2403 mp2_decoder_select="mpegaudio"
2404 mp2float_decoder_select="mpegaudio"
2405 mp3_decoder_select="mpegaudio"
2406 mp3adu_decoder_select="mpegaudio"
2407 mp3adufloat_decoder_select="mpegaudio"
2408 mp3float_decoder_select="mpegaudio"
2409 mp3on4_decoder_select="mpegaudio"
2410 mp3on4float_decoder_select="mpegaudio"
2411 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2412 mpc8_decoder_select="mpegaudiodsp"
2413 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2414 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2415 mpegvideo_decoder_select="mpegvideo"
2416 mpeg1video_decoder_select="mpegvideo"
2417 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2418 mpeg2video_decoder_select="mpegvideo"
2419 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2420 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2421 mpeg4_encoder_select="h263_encoder"
2422 msa1_decoder_select="mss34dsp"
2423 msmpeg4v1_decoder_select="h263_decoder"
2424 msmpeg4v2_decoder_select="h263_decoder"
2425 msmpeg4v2_encoder_select="h263_encoder"
2426 msmpeg4v3_decoder_select="h263_decoder"
2427 msmpeg4v3_encoder_select="h263_encoder"
2428 mss2_decoder_select="vc1_decoder mpegvideo"
2429 mts2_decoder_select="mss34dsp"
2430 mxpeg_decoder_select="mjpeg_decoder"
2431 nellymoser_decoder_select="mdct sinewin"
2432 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2433 nuv_decoder_select="idctdsp lzo"
2434 on2avc_decoder_select="mdct"
2435 opus_decoder_deps="swresample"
2436 opus_decoder_select="imdct15"
2437 png_decoder_select="zlib"
2438 png_encoder_select="huffyuvencdsp zlib"
2439 prores_decoder_select="blockdsp idctdsp"
2440 prores_encoder_select="fdctdsp"
2441 qcelp_decoder_select="lsp"
2442 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2443 ra_144_decoder_select="audiodsp"
2444 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2445 ralf_decoder_select="golomb"
2446 rawvideo_decoder_select="bswapdsp"
2447 rscc_decoder_select="zlib"
2448 rtjpeg_decoder_select="me_cmp"
2449 rv10_decoder_select="h263_decoder"
2450 rv10_encoder_select="h263_encoder"
2451 rv20_decoder_select="h263_decoder"
2452 rv20_encoder_select="h263_encoder"
2453 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2454 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2455 screenpresso_decoder_select="zlib"
2456 shorten_decoder_select="golomb"
2457 sipr_decoder_select="lsp"
2458 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2459 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2460 sonic_decoder_select="golomb rangecoder"
2461 sonic_encoder_select="golomb rangecoder"
2462 sonic_ls_encoder_select="golomb rangecoder"
2463 sp5x_decoder_select="mjpeg_decoder"
2464 svq1_decoder_select="hpeldsp"
2465 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2466 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2467 svq3_decoder_suggest="zlib"
2468 tak_decoder_select="audiodsp"
2469 tdsc_decoder_select="zlib mjpeg_decoder"
2470 theora_decoder_select="vp3_decoder"
2471 thp_decoder_select="mjpeg_decoder"
2472 tiff_decoder_suggest="zlib lzma"
2473 tiff_encoder_suggest="zlib"
2474 truehd_decoder_select="mlp_parser"
2475 truemotion2_decoder_select="bswapdsp"
2476 truespeech_decoder_select="bswapdsp"
2477 tscc_decoder_select="zlib"
2478 twinvq_decoder_select="mdct lsp sinewin"
2479 txd_decoder_select="texturedsp"
2480 utvideo_decoder_select="bswapdsp"
2481 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2482 vble_decoder_select="huffyuvdsp"
2483 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2484 vc1_qsv_decoder_deps="libmfx"
2485 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2486 vc1image_decoder_select="vc1_decoder"
2487 vorbis_decoder_select="mdct"
2488 vorbis_encoder_select="mdct"
2489 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2490 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2491 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2492 vp6a_decoder_select="vp6_decoder"
2493 vp6f_decoder_select="vp6_decoder"
2494 vp7_decoder_select="h264pred videodsp vp8dsp"
2495 vp8_decoder_select="h264pred videodsp vp8dsp"
2496 vp9_decoder_select="videodsp vp9_parser"
2497 webp_decoder_select="vp8_decoder exif"
2498 wmalossless_decoder_select="llauddsp"
2499 wmapro_decoder_select="mdct sinewin wma_freqs"
2500 wmav1_decoder_select="mdct sinewin wma_freqs"
2501 wmav1_encoder_select="mdct sinewin wma_freqs"
2502 wmav2_decoder_select="mdct sinewin wma_freqs"
2503 wmav2_encoder_select="mdct sinewin wma_freqs"
2504 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2505 wmv1_decoder_select="h263_decoder"
2506 wmv1_encoder_select="h263_encoder"
2507 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2508 wmv2_encoder_select="h263_encoder wmv2dsp"
2509 wmv3_decoder_select="vc1_decoder"
2510 wmv3image_decoder_select="wmv3_decoder"
2511 xma1_decoder_select="wmapro_decoder"
2512 xma2_decoder_select="wmapro_decoder"
2513 zerocodec_decoder_select="zlib"
2514 zlib_decoder_select="zlib"
2515 zlib_encoder_select="zlib"
2516 zmbv_decoder_select="zlib"
2517 zmbv_encoder_select="zlib"
2518
2519 # platform codecs
2520 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2521 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2522
2523 # hardware accelerators
2524 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2525 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2526 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2527 vaapi_deps="va_va_h"
2528 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2529 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2530 vda_deps="vda_framework pthreads"
2531 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2532 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2533 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2534 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2535 xvmc_deps="X11_extensions_XvMClib_h"
2536
2537 h263_vaapi_hwaccel_deps="vaapi"
2538 h263_vaapi_hwaccel_select="h263_decoder"
2539 h263_videotoolbox_hwaccel_deps="videotoolbox"
2540 h263_videotoolbox_hwaccel_select="h263_decoder"
2541 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2542 h264_d3d11va_hwaccel_deps="d3d11va"
2543 h264_d3d11va_hwaccel_select="h264_decoder"
2544 h264_dxva2_hwaccel_deps="dxva2"
2545 h264_dxva2_hwaccel_select="h264_decoder"
2546 h264_mediacodec_decoder_deps="mediacodec"
2547 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2548 h264_mmal_decoder_deps="mmal"
2549 h264_mmal_decoder_select="mmal"
2550 h264_mmal_hwaccel_deps="mmal"
2551 h264_omx_encoder_deps="omx"
2552 h264_qsv_hwaccel_deps="libmfx"
2553 h264_vaapi_hwaccel_deps="vaapi"
2554 h264_vaapi_hwaccel_select="h264_decoder"
2555 h264_vda_decoder_deps="vda"
2556 h264_vda_decoder_select="h264_decoder"
2557 h264_vda_hwaccel_deps="vda"
2558 h264_vda_hwaccel_select="h264_decoder"
2559 h264_vda_old_hwaccel_deps="vda"
2560 h264_vda_old_hwaccel_select="h264_decoder"
2561 h264_vdpau_decoder_deps="vdpau"
2562 h264_vdpau_decoder_select="h264_decoder"
2563 h264_vdpau_hwaccel_deps="vdpau"
2564 h264_vdpau_hwaccel_select="h264_decoder"
2565 h264_videotoolbox_hwaccel_deps="videotoolbox"
2566 h264_videotoolbox_hwaccel_select="h264_decoder"
2567 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2568 hevc_d3d11va_hwaccel_select="hevc_decoder"
2569 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2570 hevc_dxva2_hwaccel_select="hevc_decoder"
2571 hevc_qsv_hwaccel_deps="libmfx"
2572 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2573 hevc_vaapi_hwaccel_select="hevc_decoder"
2574 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2575 hevc_vdpau_hwaccel_select="hevc_decoder"
2576 mpeg_vdpau_decoder_deps="vdpau"
2577 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2578 mpeg_xvmc_hwaccel_deps="xvmc"
2579 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2580 mpeg1_vdpau_decoder_deps="vdpau"
2581 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2582 mpeg1_vdpau_hwaccel_deps="vdpau"
2583 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2584 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2585 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2586 mpeg1_xvmc_hwaccel_deps="xvmc"
2587 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2588 mpeg2_crystalhd_decoder_select="crystalhd"
2589 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2590 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2591 mpeg2_dxva2_hwaccel_deps="dxva2"
2592 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2593 mpeg2_mmal_decoder_deps="mmal"
2594 mpeg2_mmal_decoder_select="mmal"
2595 mpeg2_mmal_hwaccel_deps="mmal"
2596 mpeg2_qsv_hwaccel_deps="libmfx"
2597 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2598 mpeg2_vaapi_hwaccel_deps="vaapi"
2599 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2600 mpeg2_vdpau_hwaccel_deps="vdpau"
2601 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2602 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2603 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2604 mpeg2_xvmc_hwaccel_deps="xvmc"
2605 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2606 mpeg4_crystalhd_decoder_select="crystalhd"
2607 mpeg4_mmal_decoder_deps="mmal"
2608 mpeg4_mmal_decoder_select="mmal"
2609 mpeg4_mmal_hwaccel_deps="mmal"
2610 mpeg4_omx_encoder_deps="omx"
2611 mpeg4_vaapi_hwaccel_deps="vaapi"
2612 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2613 mpeg4_vdpau_decoder_deps="vdpau"
2614 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2615 mpeg4_vdpau_hwaccel_deps="vdpau"
2616 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2617 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2618 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2619 msmpeg4_crystalhd_decoder_select="crystalhd"
2620 vc1_crystalhd_decoder_select="crystalhd"
2621 vc1_d3d11va_hwaccel_deps="d3d11va"
2622 vc1_d3d11va_hwaccel_select="vc1_decoder"
2623 vc1_dxva2_hwaccel_deps="dxva2"
2624 vc1_dxva2_hwaccel_select="vc1_decoder"
2625 vc1_mmal_decoder_deps="mmal"
2626 vc1_mmal_decoder_select="mmal"
2627 vc1_mmal_hwaccel_deps="mmal"
2628 vc1_qsv_hwaccel_deps="libmfx"
2629 vc1_qsv_hwaccel_select="qsvdec_vc1"
2630 vc1_vaapi_hwaccel_deps="vaapi"
2631 vc1_vaapi_hwaccel_select="vc1_decoder"
2632 vc1_vdpau_decoder_deps="vdpau"
2633 vc1_vdpau_decoder_select="vc1_decoder"
2634 vc1_vdpau_hwaccel_deps="vdpau"
2635 vc1_vdpau_hwaccel_select="vc1_decoder"
2636 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2637 vp9_d3d11va_hwaccel_select="vp9_decoder"
2638 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2639 vp9_dxva2_hwaccel_select="vp9_decoder"
2640 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2641 vp9_vaapi_hwaccel_select="vp9_decoder"
2642 wmv3_crystalhd_decoder_select="crystalhd"
2643 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2644 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2645 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2646 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2647 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2648
2649 # hardware-accelerated codecs
2650 omx_deps="dlopen pthreads"
2651 omx_extralibs='$ldl'
2652 qsvdec_select="qsv"
2653 qsvenc_select="qsv"
2654 vaapi_encode_deps="vaapi"
2655
2656 hwupload_cuda_filter_deps="cuda"
2657 scale_npp_filter_deps="cuda libnpp"
2658
2659 nvenc_encoder_deps="nvenc"
2660 h264_qsv_decoder_deps="libmfx"
2661 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2662 h264_qsv_encoder_deps="libmfx"
2663 h264_qsv_encoder_select="qsvenc"
2664 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2665 h264_vaapi_encoder_select="vaapi_encode golomb"
2666
2667 hevc_qsv_decoder_deps="libmfx"
2668 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2669 hevc_qsv_encoder_deps="libmfx"
2670 hevc_qsv_encoder_select="qsvenc"
2671 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2672 hevc_vaapi_encoder_select="vaapi_encode golomb"
2673 mpeg2_qsv_decoder_deps="libmfx"
2674 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2675 mpeg2_qsv_encoder_deps="libmfx"
2676 mpeg2_qsv_encoder_select="qsvenc"
2677 nvenc_h264_encoder_deps="nvenc"
2678 nvenc_hevc_encoder_deps="nvenc"
2679
2680 # parsers
2681 h264_parser_select="h264_decoder"
2682 hevc_parser_select="golomb"
2683 mpegvideo_parser_select="mpegvideo"
2684 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2685 vc1_parser_select="vc1dsp"
2686
2687 # bitstream_filters
2688 mjpeg2jpeg_bsf_select="jpegtables"
2689
2690 # external libraries
2691 aac_at_decoder_deps="audiotoolbox"
2692 ac3_at_decoder_deps="audiotoolbox"
2693 ac3_at_decoder_select="ac3_parser"
2694 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2695 alac_at_decoder_deps="audiotoolbox"
2696 amr_nb_at_decoder_deps="audiotoolbox"
2697 eac3_at_decoder_deps="audiotoolbox"
2698 eac3_at_decoder_select="ac3_parser"
2699 gsm_ms_at_decoder_deps="audiotoolbox"
2700 ilbc_at_decoder_deps="audiotoolbox"
2701 mp1_at_decoder_deps="audiotoolbox"
2702 mp2_at_decoder_deps="audiotoolbox"
2703 mp3_at_decoder_deps="audiotoolbox"
2704 pcm_alaw_at_decoder_deps="audiotoolbox"
2705 pcm_mulaw_at_decoder_deps="audiotoolbox"
2706 qdmc_at_decoder_deps="audiotoolbox"
2707 qdm2_at_decoder_deps="audiotoolbox"
2708 aac_at_encoder_deps="audiotoolbox"
2709 aac_at_encoder_select="audio_frame_queue"
2710 alac_at_encoder_deps="audiotoolbox"
2711 alac_at_encoder_select="audio_frame_queue"
2712 ilbc_at_encoder_deps="audiotoolbox"
2713 ilbc_at_encoder_select="audio_frame_queue"
2714 pcm_alaw_at_encoder_deps="audiotoolbox"
2715 pcm_alaw_at_encoder_select="audio_frame_queue"
2716 pcm_mulaw_at_encoder_deps="audiotoolbox"
2717 pcm_mulaw_at_encoder_select="audio_frame_queue"
2718 chromaprint_muxer_deps="chromaprint"
2719 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2720 libcelt_decoder_deps="libcelt"
2721 libfaac_encoder_deps="libfaac"
2722 libfaac_encoder_select="audio_frame_queue"
2723 libfdk_aac_decoder_deps="libfdk_aac"
2724 libfdk_aac_encoder_deps="libfdk_aac"
2725 libfdk_aac_encoder_select="audio_frame_queue"
2726 libgme_demuxer_deps="libgme"
2727 libgsm_decoder_deps="libgsm"
2728 libgsm_encoder_deps="libgsm"
2729 libgsm_ms_decoder_deps="libgsm"
2730 libgsm_ms_encoder_deps="libgsm"
2731 libilbc_decoder_deps="libilbc"
2732 libilbc_encoder_deps="libilbc"
2733 libkvazaar_encoder_deps="libkvazaar"
2734 libmodplug_demuxer_deps="libmodplug"
2735 libmp3lame_encoder_deps="libmp3lame"
2736 libmp3lame_encoder_select="audio_frame_queue"
2737 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2738 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2739 libopencore_amrnb_encoder_select="audio_frame_queue"
2740 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2741 libopenh264_encoder_deps="libopenh264"
2742 libopenjpeg_decoder_deps="libopenjpeg"
2743 libopenjpeg_encoder_deps="libopenjpeg"
2744 libopus_decoder_deps="libopus"
2745 libopus_encoder_deps="libopus"
2746 libopus_encoder_select="audio_frame_queue"
2747 libschroedinger_decoder_deps="libschroedinger"
2748 libschroedinger_encoder_deps="libschroedinger"
2749 libshine_encoder_deps="libshine"
2750 libshine_encoder_select="audio_frame_queue"
2751 libspeex_decoder_deps="libspeex"
2752 libspeex_encoder_deps="libspeex"
2753 libspeex_encoder_select="audio_frame_queue"
2754 libtheora_encoder_deps="libtheora"
2755 libtwolame_encoder_deps="libtwolame"
2756 libutvideo_decoder_deps="libutvideo"
2757 libutvideo_encoder_deps="libutvideo"
2758 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2759 libvorbis_decoder_deps="libvorbis"
2760 libvorbis_encoder_deps="libvorbis"
2761 libvorbis_encoder_select="audio_frame_queue"
2762 libvpx_vp8_decoder_deps="libvpx"
2763 libvpx_vp8_encoder_deps="libvpx"
2764 libvpx_vp9_decoder_deps="libvpx"
2765 libvpx_vp9_encoder_deps="libvpx"
2766 libwavpack_encoder_deps="libwavpack"
2767 libwebp_encoder_deps="libwebp"
2768 libwebp_anim_encoder_deps="libwebp"
2769 libx262_encoder_deps="libx262"
2770 libx264_encoder_deps="libx264"
2771 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2772 libx264rgb_encoder_select="libx264_encoder"
2773 libx265_encoder_deps="libx265"
2774 libxavs_encoder_deps="libxavs"
2775 libxvid_encoder_deps="libxvid"
2776 libzvbi_teletext_decoder_deps="libzvbi"
2777 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2778 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2779 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2780 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2781 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2782
2783 # demuxers / muxers
2784 ac3_demuxer_select="ac3_parser"
2785 asf_demuxer_select="riffdec"
2786 asf_o_demuxer_select="riffdec"
2787 asf_muxer_select="riffenc"
2788 asf_stream_muxer_select="asf_muxer"
2789 avi_demuxer_select="iso_media riffdec exif"
2790 avi_muxer_select="riffenc"
2791 avisynth_demuxer_deps="avisynth"
2792 avisynth_demuxer_select="riffdec"
2793 caf_demuxer_select="iso_media riffdec"
2794 dash_muxer_select="mp4_muxer"
2795 dirac_demuxer_select="dirac_parser"
2796 dts_demuxer_select="dca_parser"
2797 dtshd_demuxer_select="dca_parser"
2798 dv_demuxer_select="dvprofile"
2799 dv_muxer_select="dvprofile"
2800 dxa_demuxer_select="riffdec"
2801 eac3_demuxer_select="ac3_parser"
2802 f4v_muxer_select="mov_muxer"
2803 flac_demuxer_select="flac_parser"
2804 hds_muxer_select="flv_muxer"
2805 hls_muxer_select="mpegts_muxer"
2806 image2_alias_pix_demuxer_select="image2_demuxer"
2807 image2_brender_pix_demuxer_select="image2_demuxer"
2808 ipod_muxer_select="mov_muxer"
2809 ismv_muxer_select="mov_muxer"
2810 libnut_demuxer_deps="libnut"
2811 libnut_muxer_deps="libnut"
2812 matroska_audio_muxer_select="matroska_muxer"
2813 matroska_demuxer_select="iso_media riffdec"
2814 matroska_demuxer_suggest="bzlib lzo zlib"
2815 matroska_muxer_select="iso_media riffenc"
2816 mmf_muxer_select="riffenc"
2817 mov_demuxer_select="iso_media riffdec"
2818 mov_demuxer_suggest="zlib"
2819 mov_muxer_select="iso_media riffenc rtpenc_chain"
2820 mp3_demuxer_select="mpegaudio_parser"
2821 mp4_muxer_select="mov_muxer"
2822 mpegts_demuxer_select="iso_media"
2823 mpegts_muxer_select="adts_muxer latm_muxer"
2824 mpegtsraw_demuxer_select="mpegts_demuxer"
2825 mxf_d10_muxer_select="mxf_muxer"
2826 mxf_opatom_muxer_select="mxf_muxer"
2827 nut_muxer_select="riffenc"
2828 nuv_demuxer_select="riffdec"
2829 oga_muxer_select="ogg_muxer"
2830 ogg_demuxer_select="dirac_parse"
2831 opus_muxer_select="ogg_muxer"
2832 psp_muxer_select="mov_muxer"
2833 rtp_demuxer_select="sdp_demuxer"
2834 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2835 rtsp_demuxer_select="http_protocol rtpdec"
2836 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2837 sap_demuxer_select="sdp_demuxer"
2838 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2839 sdp_demuxer_select="rtpdec"
2840 smoothstreaming_muxer_select="ismv_muxer"
2841 spdif_muxer_select="aac_parser"
2842 spx_muxer_select="ogg_muxer"
2843 swf_demuxer_suggest="zlib"
2844 tak_demuxer_select="tak_parser"
2845 tg2_muxer_select="mov_muxer"
2846 tgp_muxer_select="mov_muxer"
2847 vobsub_demuxer_select="mpegps_demuxer"
2848 w64_demuxer_select="wav_demuxer"
2849 w64_muxer_select="wav_muxer"
2850 wav_demuxer_select="riffdec"
2851 wav_muxer_select="riffenc"
2852 webm_muxer_select="iso_media riffenc"
2853 webm_dash_manifest_demuxer_select="matroska_demuxer"
2854 wtv_demuxer_select="mpegts_demuxer riffdec"
2855 wtv_muxer_select="mpegts_muxer riffenc"
2856 xmv_demuxer_select="riffdec"
2857 xwma_demuxer_select="riffdec"
2858
2859 # indevs / outdevs
2860 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2861 alsa_outdev_deps="alsa_asoundlib_h"
2862 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2863 avfoundation_indev_select="avfoundation"
2864 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2865 caca_outdev_deps="libcaca"
2866 decklink_indev_deps="decklink pthreads"
2867 decklink_indev_extralibs="-lstdc++"
2868 decklink_outdev_deps="decklink pthreads"
2869 decklink_outdev_extralibs="-lstdc++"
2870 dshow_indev_deps="IBaseFilter"
2871 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2872 dv1394_indev_deps="dv1394"
2873 dv1394_indev_select="dv_demuxer"
2874 fbdev_indev_deps="linux_fb_h"
2875 fbdev_outdev_deps="linux_fb_h"
2876 gdigrab_indev_deps="CreateDIBSection"
2877 gdigrab_indev_extralibs="-lgdi32"
2878 gdigrab_indev_select="bmp_decoder"
2879 iec61883_indev_deps="libiec61883"
2880 jack_indev_deps="jack_jack_h"
2881 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2882 lavfi_indev_deps="avfilter"
2883 libcdio_indev_deps="libcdio"
2884 libdc1394_indev_deps="libdc1394"
2885 libv4l2_indev_deps="libv4l2"
2886 openal_indev_deps="openal"
2887 opengl_outdev_deps="opengl"
2888 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2889 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2890 pulse_indev_deps="libpulse"
2891 pulse_outdev_deps="libpulse"
2892 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2893 qtkit_indev_select="qtkit"
2894 sdl_outdev_deps="sdl"
2895 sndio_indev_deps="sndio_h"
2896 sndio_outdev_deps="sndio_h"
2897 v4l_indev_deps="linux_videodev_h"
2898 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2899 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2900 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2901 vfwcap_indev_extralibs="-lavicap32"
2902 x11grab_indev_deps="x11grab"
2903 x11grab_xcb_indev_deps="libxcb"
2904 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2905 xv_outdev_extralibs="-lXv -lX11 -lXext"
2906
2907 # protocols
2908 async_protocol_deps="threads"
2909 bluray_protocol_deps="libbluray"
2910 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2911 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2912 ffrtmpcrypt_protocol_select="tcp_protocol"
2913 ffrtmphttp_protocol_deps="!librtmp_protocol"
2914 ffrtmphttp_protocol_select="http_protocol"
2915 ftp_protocol_select="tcp_protocol"
2916 gopher_protocol_select="network"
2917 http_protocol_select="tcp_protocol"
2918 httpproxy_protocol_select="tcp_protocol"
2919 https_protocol_select="tls_protocol"
2920 icecast_protocol_select="http_protocol"
2921 librtmp_protocol_deps="librtmp"
2922 librtmpe_protocol_deps="librtmp"
2923 librtmps_protocol_deps="librtmp"
2924 librtmpt_protocol_deps="librtmp"
2925 librtmpte_protocol_deps="librtmp"
2926 libsmbclient_protocol_deps="libsmbclient gplv3"
2927 libssh_protocol_deps="libssh"
2928 mmsh_protocol_select="http_protocol"
2929 mmst_protocol_select="network"
2930 rtmp_protocol_deps="!librtmp_protocol"
2931 rtmp_protocol_select="tcp_protocol"
2932 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2933 rtmps_protocol_deps="!librtmp_protocol"
2934 rtmps_protocol_select="tls_protocol"
2935 rtmpt_protocol_select="ffrtmphttp_protocol"
2936 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2937 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2938 rtp_protocol_select="udp_protocol"
2939 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2940 sctp_protocol_select="network"
2941 srtp_protocol_select="rtp_protocol srtp"
2942 tcp_protocol_select="network"
2943 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2944 tls_gnutls_protocol_select="tcp_protocol"
2945 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2946 tls_openssl_protocol_select="tcp_protocol"
2947 tls_schannel_protocol_deps="schannel"
2948 tls_schannel_protocol_select="tcp_protocol"
2949 tls_securetransport_protocol_deps="securetransport"
2950 tls_securetransport_protocol_select="tcp_protocol"
2951 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2952 udp_protocol_select="network"
2953 udplite_protocol_select="network"
2954 unix_protocol_deps="sys_un_h"
2955 unix_protocol_select="network"
2956
2957 # filters
2958 afftfilt_filter_deps="avcodec"
2959 afftfilt_filter_select="fft"
2960 amovie_filter_deps="avcodec avformat"
2961 aresample_filter_deps="swresample"
2962 ass_filter_deps="libass"
2963 asyncts_filter_deps="avresample"
2964 atempo_filter_deps="avcodec"
2965 atempo_filter_select="rdft"
2966 azmq_filter_deps="libzmq"
2967 blackframe_filter_deps="gpl"
2968 boxblur_filter_deps="gpl"
2969 bs2b_filter_deps="libbs2b"
2970 colormatrix_filter_deps="gpl"
2971 cover_rect_filter_deps="avcodec avformat gpl"
2972 cropdetect_filter_deps="gpl"
2973 delogo_filter_deps="gpl"
2974 deshake_filter_select="pixelutils"
2975 drawtext_filter_deps="libfreetype"
2976 ebur128_filter_deps="gpl"
2977 eq_filter_deps="gpl"
2978 fftfilt_filter_deps="avcodec"
2979 fftfilt_filter_select="rdft"
2980 find_rect_filter_deps="avcodec avformat gpl"
2981 firequalizer_filter_deps="avcodec"
2982 firequalizer_filter_select="rdft"
2983 flite_filter_deps="libflite"
2984 framerate_filter_select="pixelutils"
2985 frei0r_filter_deps="frei0r dlopen"
2986 frei0r_src_filter_deps="frei0r dlopen"
2987 fspp_filter_deps="gpl"
2988 geq_filter_deps="gpl"
2989 histeq_filter_deps="gpl"
2990 hqdn3d_filter_deps="gpl"
2991 interlace_filter_deps="gpl"
2992 kerndeint_filter_deps="gpl"
2993 ladspa_filter_deps="ladspa dlopen"
2994 loudnorm_filter_deps="libebur128"
2995 mcdeint_filter_deps="avcodec gpl"
2996 movie_filter_deps="avcodec avformat"
2997 mpdecimate_filter_deps="gpl"
2998 mpdecimate_filter_select="pixelutils"
2999 mptestsrc_filter_deps="gpl"
3000 negate_filter_deps="lut_filter"
3001 nnedi_filter_deps="gpl"
3002 ocr_filter_deps="libtesseract"
3003 ocv_filter_deps="libopencv"
3004 owdenoise_filter_deps="gpl"
3005 pan_filter_deps="swresample"
3006 perspective_filter_deps="gpl"
3007 phase_filter_deps="gpl"
3008 pp7_filter_deps="gpl"
3009 pp_filter_deps="gpl postproc"
3010 pullup_filter_deps="gpl"
3011 removelogo_filter_deps="avcodec avformat swscale"
3012 repeatfields_filter_deps="gpl"
3013 resample_filter_deps="avresample"
3014 rubberband_filter_deps="librubberband"
3015 sab_filter_deps="gpl swscale"
3016 scale2ref_filter_deps="swscale"
3017 scale_filter_deps="swscale"
3018 select_filter_select="pixelutils"
3019 showcqt_filter_deps="avcodec avformat swscale"
3020 showcqt_filter_select="fft"
3021 showfreqs_filter_deps="avcodec"
3022 showfreqs_filter_select="fft"
3023 showspectrum_filter_deps="avcodec"
3024 showspectrum_filter_select="fft"
3025 showspectrumpic_filter_deps="avcodec"
3026 showspectrumpic_filter_select="fft"
3027 smartblur_filter_deps="gpl swscale"
3028 sofalizer_filter_deps="netcdf avcodec"
3029 sofalizer_filter_select="fft"
3030 spectrumsynth_filter_deps="avcodec"
3031 spectrumsynth_filter_select="fft"
3032 spp_filter_deps="gpl avcodec"
3033 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3034 stereo3d_filter_deps="gpl"
3035 subtitles_filter_deps="avformat avcodec libass"
3036 super2xsai_filter_deps="gpl"
3037 pixfmts_super2xsai_test_deps="super2xsai_filter"
3038 tinterlace_filter_deps="gpl"
3039 tinterlace_merge_test_deps="tinterlace_filter"
3040 tinterlace_pad_test_deps="tinterlace_filter"
3041 uspp_filter_deps="gpl avcodec"
3042 vidstabdetect_filter_deps="libvidstab"
3043 vidstabtransform_filter_deps="libvidstab"
3044 zmq_filter_deps="libzmq"
3045 zoompan_filter_deps="swscale"
3046 zscale_filter_deps="libzimg"
3047 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3048
3049 # examples
3050 avcodec_example_deps="avcodec avutil"
3051 avio_dir_cmd="avformat avutil"
3052 avio_reading="avformat avcodec avutil"
3053 decoding_encoding_example_deps="avcodec avformat avutil"
3054 demuxing_decoding_example_deps="avcodec avformat avutil"
3055 extract_mvs_example_deps="avcodec avformat avutil"
3056 filter_audio_example_deps="avfilter avutil"
3057 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3058 filtering_video_example_deps="avfilter avcodec avformat avutil"
3059 metadata_example_deps="avformat avutil"
3060 muxing_example_deps="avcodec avformat avutil swscale"
3061 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3062 remuxing_example_deps="avcodec avformat avutil"
3063 resampling_audio_example_deps="avutil swresample"
3064 scaling_video_example_deps="avutil swscale"
3065 transcode_aac_example_deps="avcodec avformat swresample"
3066 transcoding_example_deps="avfilter avcodec avformat avutil"
3067
3068 # libraries, in linking order
3069 avcodec_deps="avutil"
3070 avdevice_deps="avformat avcodec avutil"
3071 avfilter_deps="avutil"
3072 avformat_deps="avcodec avutil"
3073 avresample_deps="avutil"
3074 postproc_deps="avutil gpl"
3075 swresample_deps="avutil"
3076 swscale_deps="avutil"
3077
3078 # programs
3079 ffmpeg_deps="avcodec avfilter avformat swresample"
3080 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3081                null_filter
3082                setpts_filter trim_filter"
3083 ffplay_deps="avcodec avformat swscale swresample sdl"
3084 ffplay_libs='$sdl_libs'
3085 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3086 ffprobe_deps="avcodec avformat"
3087 ffserver_deps="avformat fork sarestart"
3088 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3089
3090 # documentation
3091 podpages_deps="perl"
3092 manpages_deps="perl pod2man"
3093 htmlpages_deps="perl"
3094 htmlpages_deps_any="makeinfo_html texi2html"
3095 txtpages_deps="perl makeinfo"
3096 doc_deps_any="manpages htmlpages podpages txtpages"
3097
3098 # default parameters
3099
3100 logfile="config.log"
3101
3102 # installation paths
3103 prefix_default="/usr/local"
3104 bindir_default='${prefix}/bin'
3105 datadir_default='${prefix}/share/ffmpeg'
3106 docdir_default='${prefix}/share/doc/ffmpeg'
3107 incdir_default='${prefix}/include'
3108 libdir_default='${prefix}/lib'
3109 mandir_default='${prefix}/share/man'
3110
3111 # toolchain
3112 ar_default="ar"
3113 cc_default="gcc"
3114 cxx_default="g++"
3115 host_cc_default="gcc"
3116 cp_f="cp -f"
3117 doxygen_default="doxygen"
3118 install="install"
3119 ln_s_default="ln -s -f"
3120 nm_default="nm -g"
3121 objformat="elf"
3122 pkg_config_default=pkg-config
3123 ranlib_default="ranlib"
3124 strip_default="strip"
3125 yasmexe_default="yasm"
3126 windres_default="windres"
3127
3128 # OS
3129 target_os_default=$(tolower $(uname -s))
3130 host_os=$target_os_default
3131
3132 # machine
3133 if test "$target_os_default" = aix; then
3134     arch_default=$(uname -p)
3135     strip_default="strip -X32_64"
3136 else
3137     arch_default=$(uname -m)
3138 fi
3139 cpu="generic"
3140 intrinsics="none"
3141
3142 # configurable options
3143 enable $PROGRAM_LIST
3144 enable $DOCUMENT_LIST
3145 enable $EXAMPLE_LIST
3146 enable $(filter_out avresample $LIBRARY_LIST)
3147 enable stripping
3148
3149 enable asm
3150 enable debug
3151 enable doc
3152 enable faan faandct faanidct
3153 enable optimizations
3154 enable runtime_cpudetect
3155 enable safe_bitstream_reader
3156 enable static
3157 enable swscale_alpha
3158 enable valgrind_backtrace
3159
3160 sws_max_filter_size_default=256
3161 set_default sws_max_filter_size
3162
3163 # Enable platform codecs by default.
3164 enable audiotoolbox
3165
3166 # Enable hwaccels by default.
3167 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3168 enable xlib
3169
3170 enable vda_framework videotoolbox videotoolbox_encoder
3171
3172 # build settings
3173 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3174 LIBPREF="lib"
3175 LIBSUF=".a"
3176 FULLNAME='$(NAME)$(BUILDSUF)'
3177 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3178 SLIBPREF="lib"
3179 SLIBSUF=".so"
3180 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3181 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3182 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3183 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3184 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3185 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3186
3187 asflags_filter=echo
3188 cflags_filter=echo
3189 ldflags_filter=echo
3190
3191 AS_C='-c'
3192 AS_O='-o $@'
3193 CC_C='-c'
3194 CC_E='-E -o $@'
3195 CC_O='-o $@'
3196 CXX_C='-c'
3197 CXX_O='-o $@'
3198 OBJCC_C='-c'
3199 OBJCC_E='-E -o $@'
3200 OBJCC_O='-o $@'
3201 LD_O='-o $@'
3202 LD_LIB='-l%'
3203 LD_PATH='-L'
3204 HOSTCC_C='-c'
3205 HOSTCC_E='-E -o $@'
3206 HOSTCC_O='-o $@'
3207 HOSTLD_O='-o $@'
3208
3209 host_libs='-lm'
3210 host_cflags_filter=echo
3211 host_ldflags_filter=echo
3212
3213 target_path='$(CURDIR)'
3214
3215 # since the object filename is not given with the -MM flag, the compiler
3216 # is only able to print the basename, and we must add the path ourselves
3217 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3218 DEPFLAGS='-MM'
3219
3220 # find source path
3221 if test -f configure; then
3222     source_path=.
3223 else
3224     source_path=$(cd $(dirname "$0"); pwd)
3225     case "$source_path" in
3226         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3227     esac
3228     test -e "$source_path/config.h" &&
3229         die "Out of tree builds are impossible with config.h in source dir."
3230 fi
3231
3232 for v in "$@"; do
3233     r=${v#*=}
3234     l=${v%"$r"}
3235     r=$(sh_quote "$r")
3236     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3237 done
3238
3239 find_things(){
3240     thing=$1
3241     pattern=$2
3242     file=$source_path/$3
3243     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3244 }
3245
3246 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3247 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3248 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3249 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3250 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3251 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3252 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3253 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3254 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3255
3256 find_things_extern(){
3257     thing=$1
3258     pattern=$2
3259     file=$source_path/$3
3260     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3261 }
3262
3263 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3264 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3265
3266 ALL_COMPONENTS="
3267     $BSF_LIST
3268     $DECODER_LIST
3269     $DEMUXER_LIST
3270     $ENCODER_LIST
3271     $FILTER_LIST
3272     $HWACCEL_LIST
3273     $INDEV_LIST
3274     $MUXER_LIST
3275     $OUTDEV_LIST
3276     $PARSER_LIST
3277     $PROTOCOL_LIST
3278 "
3279
3280 for n in $COMPONENT_LIST; do
3281     v=$(toupper ${n%s})_LIST
3282     eval enable \$$v
3283     eval ${n}_if_any="\$$v"
3284 done
3285
3286 enable $ARCH_EXT_LIST
3287
3288 die_unknown(){
3289     echo "Unknown option \"$1\"."
3290     echo "See $0 --help for available options."
3291     exit 1
3292 }
3293
3294 print_in_columns() {
3295     cols=$(expr $ncols / 24)
3296     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3297 }
3298
3299 show_list() {
3300     suffix=_$1
3301     shift
3302     echo $* | sed s/$suffix//g | print_in_columns
3303     exit 0
3304 }
3305
3306 rand_list(){
3307     IFS=', '
3308     set -- $*
3309     unset IFS
3310     for thing; do
3311         comp=${thing%:*}
3312         prob=${thing#$comp}
3313         prob=${prob#:}
3314         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3315         echo "prob ${prob:-0.5}"
3316         printf '%s\n' $comp
3317     done
3318 }
3319
3320 do_random(){
3321     action=$1
3322     shift
3323     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3324     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3325 }
3326
3327 for opt do
3328     optval="${opt#*=}"
3329     case "$opt" in
3330         --extra-ldflags=*)
3331             add_ldflags $optval
3332         ;;
3333         --extra-ldexeflags=*)
3334             add_ldexeflags $optval
3335         ;;
3336         --extra-ldlibflags=*)
3337             add_ldlibflags $optval
3338         ;;
3339         --extra-libs=*)
3340             add_extralibs $optval
3341         ;;
3342         --disable-devices)
3343             disable $INDEV_LIST $OUTDEV_LIST
3344         ;;
3345         --enable-debug=*)
3346             debuglevel="$optval"
3347         ;;
3348         --disable-programs)
3349             disable $PROGRAM_LIST
3350         ;;
3351         --disable-everything)
3352             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3353         ;;
3354         --disable-all)
3355             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3356             disable $LIBRARY_LIST $PROGRAM_LIST doc
3357             enable avutil
3358         ;;
3359         --enable-random|--disable-random)
3360             action=${opt%%-random}
3361             do_random ${action#--} $COMPONENT_LIST
3362         ;;
3363         --enable-random=*|--disable-random=*)
3364             action=${opt%%-random=*}
3365             do_random ${action#--} $optval
3366         ;;
3367         --enable-*=*|--disable-*=*)
3368             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3369             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3370             eval list=\$$(toupper $thing)_LIST
3371             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3372             list=$(filter "$name" $list)
3373             [ "$list" = "" ] && warn "Option $opt did not match anything"
3374             $action $list
3375         ;;
3376         --enable-?*|--disable-?*)
3377             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3378             if is_in $option $COMPONENT_LIST; then
3379                 test $action = disable && action=unset
3380                 eval $action \$$(toupper ${option%s})_LIST
3381             elif is_in $option $CMDLINE_SELECT; then
3382                 $action $option
3383             else
3384                 die_unknown $opt
3385             fi
3386         ;;
3387         --list-*)
3388             NAME="${opt#--list-}"
3389             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3390             NAME=${NAME%s}
3391             eval show_list $NAME \$$(toupper $NAME)_LIST
3392         ;;
3393         --help|-h) show_help
3394         ;;
3395         --fatal-warnings) enable fatal_warnings
3396         ;;
3397         *)
3398             optname="${opt%%=*}"
3399             optname="${optname#--}"
3400             optname=$(echo "$optname" | sed 's/-/_/g')
3401             if is_in $optname $CMDLINE_SET; then
3402                 eval $optname='$optval'
3403             elif is_in $optname $CMDLINE_APPEND; then
3404                 append $optname "$optval"
3405             else
3406                 die_unknown $opt
3407             fi
3408         ;;
3409     esac
3410 done
3411
3412 for e in $env; do
3413     eval "export $e"
3414 done
3415
3416 disabled logging && logfile=/dev/null
3417
3418 # Disable all the library-specific components if the library itself
3419 # is disabled, see AVCODEC_LIST and following _LIST variables.
3420
3421 disable_components(){
3422     disabled ${1} && disable $(
3423         eval components="\$$(toupper ${1})_COMPONENTS"
3424         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3425     )
3426 }
3427
3428 map 'disable_components $v' $LIBRARY_LIST
3429
3430 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3431 set >> $logfile
3432
3433 test -n "$valgrind" && toolchain="valgrind-memcheck"
3434
3435 case "$toolchain" in
3436     *-asan)
3437         cc_default="${toolchain%-asan}"
3438         add_cflags  -fsanitize=address
3439         add_ldflags -fsanitize=address
3440     ;;
3441     *-msan)
3442         cc_default="${toolchain%-msan}"
3443         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3444         add_ldflags -fsanitize=memory
3445     ;;
3446     *-tsan)
3447         cc_default="${toolchain%-tsan}"
3448         add_cflags  -fsanitize=thread -pie
3449         add_ldflags -fsanitize=thread -pie
3450         case "$toolchain" in
3451             gcc-tsan)
3452                 add_cflags  -fPIC
3453                 add_ldflags -fPIC
3454                 ;;
3455         esac
3456     ;;
3457     *-usan)
3458         cc_default="${toolchain%-usan}"
3459         add_cflags  -fsanitize=undefined
3460         add_ldflags -fsanitize=undefined
3461     ;;
3462     valgrind-*)
3463         target_exec_default="valgrind"
3464         case "$toolchain" in
3465             valgrind-massif)
3466                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3467                 ;;
3468             valgrind-memcheck)
3469                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3470                 ;;
3471         esac
3472     ;;
3473     msvc)
3474         # Check whether the current MSVC version needs the C99 converter.
3475         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3476         # support enough of C99 to build ffmpeg. Default to the new
3477         # behaviour if the regexp was unable to match anything, since this
3478         # successfully parses the version number of existing supported
3479         # versions that require the converter (MSVC 2010 and 2012).
3480         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3481         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3482             cc_default="cl"
3483         else
3484             cc_default="c99wrap cl"
3485         fi
3486         ld_default="$source_path/compat/windows/mslink"
3487         nm_default="dumpbin -symbols"
3488         ar_default="lib"
3489         case "$arch" in
3490         arm*)
3491             as_default="armasm"
3492             ;;
3493         esac
3494         target_os_default="win32"
3495         # Use a relative path for TMPDIR. This makes sure all the
3496         # ffconf temp files are written with a relative path, avoiding
3497         # issues with msys/win32 path conversion for MSVC parameters
3498         # such as -Fo<file> or -out:<file>.
3499         TMPDIR=.
3500     ;;
3501     icl)
3502         cc_default="icl"
3503         ld_default="xilink"
3504         nm_default="dumpbin -symbols"
3505         ar_default="xilib"
3506         target_os_default="win32"
3507         TMPDIR=.
3508     ;;
3509     gcov)
3510         add_cflags  -fprofile-arcs -ftest-coverage
3511         add_ldflags -fprofile-arcs -ftest-coverage
3512     ;;
3513     llvm-cov)
3514         add_cflags -fprofile-arcs -ftest-coverage
3515         add_ldflags --coverage
3516     ;;
3517     hardened)
3518         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3519         add_cflags   -fno-strict-overflow -fstack-protector-all
3520         add_ldflags  -Wl,-z,relro -Wl,-z,now
3521     ;;
3522     ?*)
3523         die "Unknown toolchain $toolchain"
3524     ;;
3525 esac
3526
3527 test -n "$cross_prefix" && enable cross_compile
3528
3529 if enabled cross_compile; then
3530     test -n "$arch" && test -n "$target_os" ||
3531         die "Must specify target arch and OS when cross-compiling"
3532 fi
3533
3534 ar_default="${cross_prefix}${ar_default}"
3535 cc_default="${cross_prefix}${cc_default}"
3536 cxx_default="${cross_prefix}${cxx_default}"
3537 nm_default="${cross_prefix}${nm_default}"
3538 pkg_config_default="${cross_prefix}${pkg_config_default}"
3539 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3540     ranlib_default="${cross_prefix}${ranlib_default} -D"
3541 else
3542     ranlib_default="${cross_prefix}${ranlib_default}"
3543 fi
3544 strip_default="${cross_prefix}${strip_default}"
3545 windres_default="${cross_prefix}${windres_default}"
3546
3547 sysinclude_default="${sysroot}/usr/include"
3548
3549 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3550     target_exec target_os yasmexe
3551 enabled cross_compile || host_cc_default=$cc
3552 set_default host_cc
3553
3554 pkg_config_fail_message=""
3555 if ! $pkg_config --version >/dev/null 2>&1; then
3556     warn "$pkg_config not found, library detection may fail."
3557     pkg_config=false
3558 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3559     pkg_config_fail_message="
3560 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3561 fi
3562
3563 if test $doxygen != $doxygen_default && \
3564   ! $doxygen --version >/dev/null 2>&1; then
3565     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3566 fi
3567
3568 exesuf() {
3569     case $1 in
3570         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3571     esac
3572 }
3573
3574 EXESUF=$(exesuf $target_os)
3575 HOSTEXESUF=$(exesuf $host_os)
3576
3577 # set temporary file name
3578 : ${TMPDIR:=$TEMPDIR}
3579 : ${TMPDIR:=$TMP}
3580 : ${TMPDIR:=/tmp}
3581
3582 if [ -n "$tempprefix" ] ; then
3583     mktemp(){
3584         echo $tempprefix.${HOSTNAME}.${UID}
3585     }
3586 elif ! check_cmd mktemp -u XXXXXX; then
3587     # simple replacement for missing mktemp
3588     # NOT SAFE FOR GENERAL USE
3589     mktemp(){
3590         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3591     }
3592 fi
3593
3594 tmpfile(){
3595     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3596         (set -C; exec > $tmp) 2>/dev/null ||
3597         die "Unable to create temporary file in $TMPDIR."
3598     append TMPFILES $tmp
3599     eval $1=$tmp
3600 }
3601
3602 trap 'rm -f -- $TMPFILES' EXIT
3603
3604 tmpfile TMPASM .asm
3605 tmpfile TMPC   .c
3606 tmpfile TMPCPP .cpp
3607 tmpfile TMPE   $EXESUF
3608 tmpfile TMPH   .h
3609 tmpfile TMPM   .m
3610 tmpfile TMPO   .o
3611 tmpfile TMPS   .S
3612 tmpfile TMPSH  .sh
3613 tmpfile TMPV   .ver
3614
3615 unset -f mktemp
3616
3617 chmod +x $TMPE
3618
3619 # make sure we can execute files in $TMPDIR
3620 cat > $TMPSH 2>> $logfile <<EOF
3621 #! /bin/sh
3622 EOF
3623 chmod +x $TMPSH >> $logfile 2>&1
3624 if ! $TMPSH >> $logfile 2>&1; then
3625     cat <<EOF
3626 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3627 variable to another directory and make sure that it is not mounted noexec.
3628 EOF
3629     die "Sanity test failed."
3630 fi
3631
3632 armasm_flags(){
3633     for flag; do
3634         case $flag in
3635             # Filter out MSVC cl.exe options from cflags that shouldn't
3636             # be passed to gas-preprocessor
3637             -M[TD]*)                                            ;;
3638             *)                  echo $flag                      ;;
3639         esac
3640    done
3641 }
3642
3643 ccc_flags(){
3644     for flag; do
3645         case $flag in
3646             -std=c99)           echo -c99                       ;;
3647             -mcpu=*)            echo -arch ${flag#*=}           ;;
3648             -mieee)             echo -ieee                      ;;
3649             -O*|-fast)          echo $flag                      ;;
3650             -fno-math-errno)    echo -assume nomath_errno       ;;
3651             -g)                 echo -g3                        ;;
3652             -Wall)              echo -msg_enable level2         ;;
3653             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3654             -Wl,*)              echo $flag                      ;;
3655             -f*|-W*)                                            ;;
3656             *)                  echo $flag                      ;;
3657         esac
3658    done
3659 }
3660
3661 cparser_flags(){
3662     for flag; do
3663         case $flag in
3664             -Wno-switch)             echo -Wno-switch-enum ;;
3665             -Wno-format-zero-length) ;;
3666             -Wdisabled-optimization) ;;
3667             -Wno-pointer-sign)       echo -Wno-other ;;
3668             *)                       echo $flag ;;
3669         esac
3670     done
3671 }
3672
3673 msvc_common_flags(){
3674     for flag; do
3675         case $flag in
3676             # In addition to specifying certain flags under the compiler
3677             # specific filters, they must be specified here as well or else the
3678             # generic catch all at the bottom will print the original flag.
3679             -Wall)                ;;
3680             -std=c99)             ;;
3681             # Common flags
3682             -fomit-frame-pointer) ;;
3683             -g)                   echo -Z7 ;;
3684             -fno-math-errno)      ;;
3685             -fno-common)          ;;
3686             -fno-signed-zeros)    ;;
3687             -fPIC)                ;;
3688             -mthumb)              ;;
3689             -march=*)             ;;
3690             -lz)                  echo zlib.lib ;;
3691             -lavifil32)           echo vfw32.lib ;;
3692             -lavicap32)           echo vfw32.lib user32.lib ;;
3693             -lx264)               echo libx264.lib ;;
3694             -l*)                  echo ${flag#-l}.lib ;;
3695             -LARGEADDRESSAWARE)   echo $flag ;;
3696             -L*)                  echo -libpath:${flag#-L} ;;
3697             *)                    echo $flag ;;
3698         esac
3699     done
3700 }
3701
3702 msvc_flags(){
3703     msvc_common_flags "$@"
3704     for flag; do
3705         case $flag in
3706             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3707                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3708                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3709                                        -wd4307 \
3710                                        -wd4273 -wd4554 -wd4701 ;;
3711         esac
3712     done
3713 }
3714
3715 icl_flags(){
3716     msvc_common_flags "$@"
3717     for flag; do
3718         case $flag in
3719             # Despite what Intel's documentation says -Wall, which is supported
3720             # on Windows, does enable remarks so disable them here.
3721             -Wall)                echo $flag -Qdiag-disable:remark ;;
3722             -std=c99)             echo -Qstd=c99 ;;
3723             -flto)                echo -ipo ;;
3724         esac
3725     done
3726 }
3727
3728 icc_flags(){
3729     for flag; do
3730         case $flag in
3731             -flto)                echo -ipo ;;
3732             *)                    echo $flag ;;
3733         esac
3734     done
3735 }
3736
3737 pgi_flags(){
3738     for flag; do
3739         case $flag in
3740             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3741             -fomit-frame-pointer) echo -Mnoframe ;;
3742             -g)                   echo -gopt ;;
3743             *)                    echo $flag ;;
3744         esac
3745     done
3746 }
3747
3748 suncc_flags(){
3749     for flag; do
3750         case $flag in
3751             -march=*|-mcpu=*)
3752                 case "${flag#*=}" in
3753                     native)                   echo -xtarget=native       ;;
3754                     v9|niagara)               echo -xarch=sparc          ;;
3755                     ultrasparc)               echo -xarch=sparcvis       ;;
3756                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3757                     i586|pentium)             echo -xchip=pentium        ;;
3758                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3759                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3760                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3761                     pentium4*)          echo -xtarget=pentium4           ;;
3762                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3763                     *-sse3)             echo -xarch=sse3                 ;;
3764                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3765                     bonnell)                   echo -xarch=ssse3         ;;
3766                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3767                     westmere)                  echo -xtarget=westmere    ;;
3768                     silvermont)                echo -xarch=sse4_2        ;;
3769                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3770                     core-avx*|ivybridge|haswell|broadwell)
3771                                                echo -xarch=avx           ;;
3772                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3773                     btver1)                    echo -xarch=amdsse4a      ;;
3774                     btver2|bdver*)             echo -xarch=avx           ;;
3775                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3776                     k8|opteron|athlon64|athlon-fx)
3777                                                echo -xarch=sse2a         ;;
3778                     athlon*)                   echo -xarch=pentium_proa  ;;
3779                 esac
3780                 ;;
3781             -std=c99)             echo -xc99              ;;
3782             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3783             -fPIC)                echo -KPIC -xcode=pic32 ;;
3784             -W*,*)                echo $flag              ;;
3785             -f*-*|-W*|-mimpure-text)                      ;;
3786             -shared)              echo -G                 ;;
3787             *)                    echo $flag              ;;
3788         esac
3789     done
3790 }
3791
3792 tms470_flags(){
3793     for flag; do
3794         case $flag in
3795             -march=*|-mcpu=*)
3796                 case "${flag#*=}" in
3797                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3798                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3799                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3800                     armv6*|arm11*)          echo -mv=6   ;;
3801                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3802                                             echo -mv=5e  ;;
3803                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3804                 esac
3805                 ;;
3806             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3807             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3808             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3809             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3810             -msoft-float)   echo --float_support=vfplib       ;;
3811             -O[0-3]|-mf=*)  echo $flag                        ;;
3812             -g)             echo -g -mn                       ;;
3813             -pds=*)         echo $flag                        ;;
3814             -D*|-I*)        echo $flag                        ;;
3815             --gcc|--abi=*)  echo $flag                        ;;
3816             -me)            echo $flag                        ;;
3817         esac
3818     done
3819 }
3820
3821 probe_cc(){
3822     pfx=$1
3823     _cc=$2
3824     first=$3
3825
3826     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3827     unset _ld_o _ldflags _ld_lib _ld_path
3828     unset _depflags _DEPCMD _DEPFLAGS
3829     _flags_filter=echo
3830
3831     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3832         true # no-op to avoid reading stdin in following checks
3833     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3834         _type=llvm_gcc
3835         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3836         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3837         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3838         _cflags_speed='-O3'
3839         _cflags_size='-Os'
3840     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3841         _type=gcc
3842         gcc_version=$($_cc --version | head -n1)
3843         gcc_basever=$($_cc -dumpversion)
3844         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3845         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3846         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3847         case $gcc_basever in
3848             2) ;;
3849             2.*) ;;
3850             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3851         esac
3852         if [ "$first" = true ]; then
3853             case $gcc_basever in
3854                 4.2*)
3855                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3856             esac
3857         fi
3858         _cflags_speed='-O3'
3859         _cflags_size='-Os'
3860     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3861         _type=icc
3862         _ident=$($_cc --version | head -n1)
3863         _depflags='-MMD'
3864         _cflags_speed='-O3'
3865         _cflags_size='-Os'
3866         _cflags_noopt='-O1'
3867         _flags_filter=icc_flags
3868     elif $_cc -v 2>&1 | grep -q xlc; then
3869         _type=xlc
3870         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3871         _cflags_speed='-O5'
3872         _cflags_size='-O5 -qcompact'
3873     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3874         _type=ccc
3875         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3876         _DEPFLAGS='-M'
3877         _cflags_speed='-fast'
3878         _cflags_size='-O1'
3879         _flags_filter=ccc_flags
3880     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3881         test -d "$sysroot" || die "No valid sysroot specified."
3882         _type=armcc
3883         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3884         armcc_conf="$PWD/armcc.conf"
3885         $_cc --arm_linux_configure                 \
3886              --arm_linux_config_file="$armcc_conf" \
3887              --configure_sysroot="$sysroot"        \
3888              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3889              die "Error creating armcc configuration file."
3890         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3891         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3892         as_default="${cross_prefix}gcc"
3893         _depflags='-MMD'
3894         _cflags_speed='-O3'
3895         _cflags_size='-Os'
3896     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3897         _type=tms470
3898         _ident=$($_cc -version | head -n1 | tr -s ' ')
3899         _flags='--gcc --abi=eabi -me'
3900         _cc_e='-ppl -fe=$@'
3901         _cc_o='-fe=$@'
3902         _depflags='-ppa -ppd=$(@:.o=.d)'
3903         _cflags_speed='-O3 -mf=5'
3904         _cflags_size='-O3 -mf=2'
3905         _flags_filter=tms470_flags
3906     elif $_cc -v 2>&1 | grep -q clang; then
3907         _type=clang
3908         _ident=$($_cc --version 2>/dev/null | head -n1)
3909         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3910         _cflags_speed='-O3'
3911         _cflags_size='-Os'
3912     elif $_cc -V 2>&1 | grep -q Sun; then
3913         _type=suncc
3914         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3915         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3916         _DEPFLAGS='-xM1 -xc99'
3917         _ldflags='-std=c99'
3918         _cflags_speed='-O5'
3919         _cflags_size='-O5 -xspace'
3920         _flags_filter=suncc_flags
3921     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3922         _type=pathscale
3923         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3924         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3925         _cflags_speed='-O2'
3926         _cflags_size='-Os'
3927         _flags_filter='filter_out -Wdisabled-optimization'
3928     elif $_cc -v 2>&1 | grep -q Open64; then
3929         _type=open64
3930         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3931         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3932         _cflags_speed='-O2'
3933         _cflags_size='-Os'
3934         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3935     elif $_cc -V 2>&1 | grep -q Portland; then
3936         _type=pgi
3937         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3938         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3939         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3940         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3941         _cflags_noopt="-O"
3942         _flags_filter=pgi_flags
3943     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3944         _type=armasm
3945         _ident=$($_cc | head -n1)
3946         # 4509: "This form of conditional instruction is deprecated"
3947         _flags="-nologo -ignore 4509"
3948         _flags_filter=armasm_flags
3949     elif $_cc 2>&1 | grep -q Intel; then
3950         _type=icl
3951         _ident=$($_cc 2>&1 | head -n1)
3952         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3953         # Not only is O3 broken on 13.x+ but it is slower on all previous
3954         # versions (tested) as well.
3955         _cflags_speed="-O2"
3956         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3957         if $_cc 2>&1 | grep -q Linker; then
3958             _ld_o='-out:$@'
3959         else
3960             _ld_o='-Fe$@'
3961         fi
3962         _cc_o='-Fo$@'
3963         _cc_e='-P'
3964         _flags_filter=icl_flags
3965         _ld_lib='lib%.a'
3966         _ld_path='-libpath:'
3967         # -Qdiag-error to make icl error when seeing certain unknown arguments
3968         _flags='-nologo -Qdiag-error:4044,10157'
3969         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3970         # with MSVC which enables it by default.
3971         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3972         disable stripping
3973     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3974         _type=msvc
3975         _ident=$($_cc 2>&1 | head -n1)
3976         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3977         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3978         _cflags_speed="-O2"
3979         _cflags_size="-O1"
3980         if $_cc -nologo- 2>&1 | grep -q Linker; then
3981             _ld_o='-out:$@'
3982         else
3983             _ld_o='-Fe$@'
3984         fi
3985         _cc_o='-Fo$@'
3986         _cc_e='-P -Fi$@'
3987         _flags_filter=msvc_flags
3988         _ld_lib='lib%.a'
3989         _ld_path='-libpath:'
3990         _flags='-nologo'
3991         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3992         disable stripping
3993     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3994         _type=cparser
3995         _ident=$($_cc --version | head -n1)
3996         _depflags='-MMD'
3997         _cflags_speed='-O4'
3998         _cflags_size='-O2'
3999         _flags_filter=cparser_flags
4000     fi
4001
4002     eval ${pfx}_type=\$_type
4003     eval ${pfx}_ident=\$_ident
4004 }
4005
4006 set_ccvars(){
4007     eval ${1}_C=\${_cc_c-\${${1}_C}}
4008     eval ${1}_E=\${_cc_e-\${${1}_E}}
4009     eval ${1}_O=\${_cc_o-\${${1}_O}}
4010
4011     if [ -n "$_depflags" ]; then
4012         eval ${1}_DEPFLAGS=\$_depflags
4013     else
4014         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4015         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4016         eval DEP${1}FLAGS=\$_flags
4017     fi
4018 }
4019
4020 probe_cc cc "$cc" "true"
4021 cflags_filter=$_flags_filter
4022 cflags_speed=$_cflags_speed
4023 cflags_size=$_cflags_size
4024 cflags_noopt=$_cflags_noopt
4025 add_cflags $_flags $_cflags
4026 cc_ldflags=$_ldflags
4027 set_ccvars CC
4028
4029 probe_cc hostcc "$host_cc"
4030 host_cflags_filter=$_flags_filter
4031 add_host_cflags  $_flags $_cflags
4032 set_ccvars HOSTCC
4033
4034 test -n "$cc_type" && enable $cc_type ||
4035     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4036
4037 : ${as_default:=$cc}
4038 : ${objcc_default:=$cc}
4039 : ${dep_cc_default:=$cc}
4040 : ${ld_default:=$cc}
4041 : ${host_ld_default:=$host_cc}
4042 set_default ar as objcc dep_cc ld ln_s host_ld windres
4043
4044 probe_cc as "$as"
4045 asflags_filter=$_flags_filter
4046 add_asflags $_flags $_cflags
4047 set_ccvars AS
4048
4049 probe_cc objcc "$objcc"
4050 objcflags_filter=$_flags_filter
4051 add_objcflags $_flags $_cflags
4052 set_ccvars OBJC
4053
4054 probe_cc ld "$ld"
4055 ldflags_filter=$_flags_filter
4056 add_ldflags $_flags $_ldflags
4057 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4058 LD_O=${_ld_o-$LD_O}
4059 LD_LIB=${_ld_lib-$LD_LIB}
4060 LD_PATH=${_ld_path-$LD_PATH}
4061
4062 probe_cc hostld "$host_ld"
4063 host_ldflags_filter=$_flags_filter
4064 add_host_ldflags $_flags $_ldflags
4065 HOSTLD_O=${_ld_o-$HOSTLD_O}
4066
4067 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4068     probe_cc depcc "$dep_cc"
4069     CCDEP=${_DEPCMD:-$DEPCMD}
4070     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4071     DEPCCFLAGS=$_flags
4072 fi
4073
4074 if $ar 2>&1 | grep -q Microsoft; then
4075     arflags="-nologo"
4076     ar_o='-out:$@'
4077 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4078     arflags="rq"
4079     ar_o='$@'
4080 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4081     arflags='-Xany -r -c'
4082     ar_o='$@'
4083 elif $ar 2>&1 | grep -q "\[D\] "; then
4084     arflags="rcD"
4085     ar_o='$@'
4086 else
4087     arflags="rc"
4088     ar_o='$@'
4089 fi
4090
4091 add_cflags $extra_cflags
4092 add_cxxflags $extra_cxxflags
4093 add_objcflags $extra_objcflags
4094 add_asflags $extra_cflags
4095
4096 if test -n "$sysroot"; then
4097     case "$cc_type" in
4098         gcc|llvm_gcc|clang)
4099             add_cppflags --sysroot="$sysroot"
4100             add_ldflags --sysroot="$sysroot"
4101 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4102             add_cppflags -isysroot "$sysroot"
4103             add_ldflags -isysroot "$sysroot"
4104         ;;
4105         tms470)
4106             add_cppflags -I"$sysinclude"
4107             add_ldflags  --sysroot="$sysroot"
4108         ;;
4109     esac
4110 fi
4111
4112 if test "$cpu" = host; then
4113     enabled cross_compile &&
4114         die "--cpu=host makes no sense when cross-compiling."
4115
4116     case "$cc_type" in
4117         gcc|llvm_gcc)
4118             check_native(){
4119                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4120                 sed -n "/cc1.*$1=/{
4121                             s/.*$1=\\([^ ]*\\).*/\\1/
4122                             p
4123                             q
4124                         }" $TMPE
4125             }
4126             cpu=$(check_native -march || check_native -mcpu)
4127         ;;
4128         clang)
4129             check_native(){
4130                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4131                 sed -n "/cc1.*-target-cpu /{
4132                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4133                             p
4134                             q
4135                         }" $TMPE
4136             }
4137             cpu=$(check_native -march)
4138         ;;
4139     esac
4140
4141     test "${cpu:-host}" = host &&
4142         die "--cpu=host not supported with compiler $cc"
4143 fi
4144
4145 # Deal with common $arch aliases
4146 case "$arch" in
4147     aarch64|arm64)
4148         arch="aarch64"
4149     ;;
4150     arm*|iPad*|iPhone*)
4151         arch="arm"
4152     ;;
4153     mips*|IP*)
4154         case "$arch" in
4155         *el)
4156             add_cppflags -EL
4157             add_ldflags -EL
4158         ;;
4159         *eb)
4160             add_cppflags -EB
4161             add_ldflags -EB
4162         ;;
4163         esac
4164         arch="mips"
4165     ;;
4166     parisc*|hppa*)
4167         arch="parisc"
4168     ;;
4169     "Power Macintosh"|ppc*|powerpc*)
4170         arch="ppc"
4171     ;;
4172     s390|s390x)
4173         arch="s390"
4174     ;;
4175     sh4|sh)
4176         arch="sh4"
4177     ;;
4178     sun4u|sparc*)
4179         arch="sparc"
4180     ;;
4181     tilegx|tile-gx)
4182         arch="tilegx"
4183     ;;
4184     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4185         arch="x86"
4186     ;;
4187 esac
4188
4189 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4190 enable $arch
4191
4192 # Add processor-specific flags
4193 if enabled aarch64; then
4194
4195     case $cpu in
4196         armv*)
4197             cpuflags="-march=$cpu"
4198         ;;
4199         *)
4200             cpuflags="-mcpu=$cpu"
4201         ;;
4202     esac
4203
4204 elif enabled alpha; then
4205
4206     cpuflags="-mcpu=$cpu"
4207
4208 elif enabled arm; then
4209
4210     check_arm_arch() {
4211         check_cpp_condition stddef.h \
4212             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4213             $cpuflags
4214     }
4215
4216     probe_arm_arch() {
4217         if   check_arm_arch 4;        then echo armv4
4218         elif check_arm_arch 4T;       then echo armv4t
4219         elif check_arm_arch 5;        then echo armv5
4220         elif check_arm_arch 5E;       then echo armv5e
4221         elif check_arm_arch 5T;       then echo armv5t
4222         elif check_arm_arch 5TE;      then echo armv5te
4223         elif check_arm_arch 5TEJ;     then echo armv5te
4224         elif check_arm_arch 6;        then echo armv6
4225         elif check_arm_arch 6J;       then echo armv6j
4226         elif check_arm_arch 6K;       then echo armv6k
4227         elif check_arm_arch 6Z;       then echo armv6z
4228         elif check_arm_arch 6ZK;      then echo armv6zk
4229         elif check_arm_arch 6T2;      then echo armv6t2
4230         elif check_arm_arch 7;        then echo armv7
4231         elif check_arm_arch 7A  7_A;  then echo armv7-a
4232         elif check_arm_arch 7S;       then echo armv7-a
4233         elif check_arm_arch 7R  7_R;  then echo armv7-r
4234         elif check_arm_arch 7M  7_M;  then echo armv7-m
4235         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4236         elif check_arm_arch 8A  8_A;  then echo armv8-a
4237         fi
4238     }
4239
4240     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4241
4242     case $cpu in
4243         armv*)
4244             cpuflags="-march=$cpu"
4245             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4246         ;;
4247         *)
4248             cpuflags="-mcpu=$cpu"
4249             case $cpu in
4250                 cortex-a*)                               subarch=armv7a  ;;
4251                 cortex-r*)                               subarch=armv7r  ;;
4252                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4253                 arm11*)                                  subarch=armv6   ;;
4254                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4255                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4256                 *)                             subarch=$(probe_arm_arch) ;;
4257             esac
4258         ;;
4259     esac
4260
4261     case "$subarch" in
4262         armv5t*)    enable fast_clz                ;;
4263         armv[6-8]*)
4264             enable fast_clz
4265             disabled fast_unaligned || enable fast_unaligned
4266             ;;
4267     esac
4268
4269 elif enabled avr32; then
4270
4271     case $cpu in
4272         ap7[02]0[0-2])
4273             subarch="avr32_ap"
4274             cpuflags="-mpart=$cpu"
4275         ;;
4276         ap)
4277             subarch="avr32_ap"
4278             cpuflags="-march=$cpu"
4279         ;;
4280         uc3[ab]*)
4281             subarch="avr32_uc"
4282             cpuflags="-mcpu=$cpu"
4283         ;;
4284         uc)
4285             subarch="avr32_uc"
4286             cpuflags="-march=$cpu"
4287         ;;
4288     esac
4289
4290 elif enabled bfin; then
4291
4292     cpuflags="-mcpu=$cpu"
4293
4294 elif enabled mips; then
4295
4296     cpuflags="-march=$cpu"
4297
4298     if [ "$cpu" != "generic" ]; then
4299         disable mips32r2
4300         disable mips32r5
4301         disable mips64r2
4302         disable mips32r6
4303         disable mips64r6
4304         disable loongson2
4305         disable loongson3
4306
4307         case $cpu in
4308             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4309                 enable mips32r2
4310                 disable msa
4311             ;;
4312             p5600|i6400)
4313                 disable mipsdsp
4314                 disable mipsdspr2
4315             ;;
4316             loongson*)
4317                 enable loongson2
4318                 enable loongson3
4319                 enable local_aligned_8 local_aligned_16 local_aligned_32
4320                 enable simd_align_16
4321                 enable fast_64bit
4322                 enable fast_clz
4323                 enable fast_cmov
4324                 enable fast_unaligned
4325                 disable aligned_stack
4326                 case $cpu in
4327                     loongson3*)
4328                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4329                     ;;
4330                     loongson2e)
4331                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4332                     ;;
4333                     loongson2f)
4334                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4335                     ;;
4336                 esac
4337             ;;
4338             *)
4339                 # Unknown CPU. Disable everything.
4340                 warn "unknown CPU. Disabling all MIPS optimizations."
4341                 disable mipsfpu
4342                 disable mipsdsp
4343                 disable mipsdspr2
4344                 disable msa
4345                 disable mmi
4346             ;;
4347         esac
4348
4349         case $cpu in
4350             24kc)
4351                 disable mipsfpu
4352                 disable mipsdsp
4353                 disable mipsdspr2
4354             ;;
4355             24kf*)
4356                 disable mipsdsp
4357                 disable mipsdspr2
4358             ;;
4359             24kec|34kc|1004kc)
4360                 disable mipsfpu
4361                 disable mipsdspr2
4362             ;;
4363             24kef*|34kf*|1004kf*)
4364                 disable mipsdspr2
4365             ;;
4366             74kc)
4367                 disable mipsfpu
4368             ;;
4369             p5600)
4370                 enable mips32r5
4371                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4372             ;;
4373             i6400)
4374                 enable mips64r6
4375                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4376             ;;
4377         esac
4378     else
4379         # We do not disable anything. Is up to the user to disable the unwanted features.
4380         warn 'generic cpu selected'
4381     fi
4382
4383 elif enabled ppc; then
4384
4385     disable ldbrx
4386
4387     case $(tolower $cpu) in
4388         601|ppc601|powerpc601)
4389             cpuflags="-mcpu=601"
4390             disable altivec
4391         ;;
4392         603*|ppc603*|powerpc603*)
4393             cpuflags="-mcpu=603"
4394             disable altivec
4395         ;;
4396         604*|ppc604*|powerpc604*)
4397             cpuflags="-mcpu=604"
4398             disable altivec
4399         ;;
4400         g3|75*|ppc75*|powerpc75*)
4401             cpuflags="-mcpu=750"
4402             disable altivec
4403         ;;
4404         g4|745*|ppc745*|powerpc745*)
4405             cpuflags="-mcpu=7450"
4406             disable vsx
4407         ;;
4408         74*|ppc74*|powerpc74*)
4409             cpuflags="-mcpu=7400"
4410             disable vsx
4411         ;;
4412         g5|970|ppc970|powerpc970)
4413             cpuflags="-mcpu=970"
4414             disable vsx
4415         ;;
4416         power[3-6]*)
4417             cpuflags="-mcpu=$cpu"
4418             disable vsx
4419         ;;
4420         power[7-8]*)
4421             cpuflags="-mcpu=$cpu"
4422         ;;
4423         cell)
4424             cpuflags="-mcpu=cell"
4425             enable ldbrx
4426             disable vsx
4427         ;;
4428         e500mc)
4429             cpuflags="-mcpu=e500mc"
4430             disable altivec
4431         ;;
4432         e500v2)
4433             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4434             disable altivec
4435             disable dcbzl
4436         ;;
4437         e500)
4438             cpuflags="-mcpu=8540 -mhard-float"
4439             disable altivec
4440             disable dcbzl
4441         ;;
4442     esac
4443
4444 elif enabled sparc; then
4445
4446     case $cpu in
4447         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4448             cpuflags="-mcpu=$cpu"
4449         ;;
4450         ultrasparc*|niagara[234])
4451             cpuflags="-mcpu=$cpu"
4452         ;;
4453     esac
4454
4455 elif enabled x86; then
4456
4457     case $cpu in
4458         i[345]86|pentium)
4459             cpuflags="-march=$cpu"
4460             disable i686
4461             disable mmx
4462         ;;
4463         # targets that do NOT support nopl and conditional mov (cmov)
4464         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4465             cpuflags="-march=$cpu"
4466             disable i686
4467         ;;
4468         # targets that do support nopl and conditional mov (cmov)
4469         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4470         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4471             cpuflags="-march=$cpu"
4472             enable i686
4473             enable fast_cmov
4474         ;;
4475         # targets that do support conditional mov but on which it's slow
4476         pentium4|pentium4m|prescott|nocona)
4477             cpuflags="-march=$cpu"
4478             enable i686
4479             disable fast_cmov
4480         ;;
4481     esac
4482
4483 fi
4484
4485 if [ "$cpu" != generic ]; then
4486     add_cflags  $cpuflags
4487     add_asflags $cpuflags
4488     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4489 fi
4490
4491 # compiler sanity check
4492 check_exec <<EOF
4493 int main(void){ return 0; }
4494 EOF
4495 if test "$?" != 0; then
4496     echo "$cc is unable to create an executable file."
4497     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4498         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4499         echo "Only do this if you know what cross compiling means."
4500     fi
4501     die "C compiler test failed."
4502 fi
4503
4504 add_cppflags -D_ISOC99_SOURCE
4505 add_cxxflags -D__STDC_CONSTANT_MACROS
4506 check_cflags -std=c99
4507 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4508 #include <stdlib.h>
4509 EOF
4510 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4511 #include <stdlib.h>
4512 EOF
4513
4514 add_host_cppflags -D_ISOC99_SOURCE
4515 check_host_cflags -std=c99
4516 check_host_cflags -Wall
4517 check_host_cflags -O3
4518
4519 check_64bit(){
4520     arch32=$1
4521     arch64=$2
4522     expr=$3
4523     check_code cc "" "int test[2*($expr) - 1]" &&
4524         subarch=$arch64 || subarch=$arch32
4525 }
4526
4527 case "$arch" in
4528     aarch64|alpha|ia64)
4529         spic=$shared
4530     ;;
4531     mips)
4532         check_64bit mips mips64 '_MIPS_SIM > 1'
4533         spic=$shared
4534     ;;
4535     parisc)
4536         check_64bit parisc parisc64 'sizeof(void *) > 4'
4537         spic=$shared
4538     ;;
4539     ppc)
4540         check_64bit ppc ppc64 'sizeof(void *) > 4'
4541         spic=$shared
4542     ;;
4543     s390)
4544         check_64bit s390 s390x 'sizeof(void *) > 4'
4545         spic=$shared
4546     ;;
4547     sparc)
4548         check_64bit sparc sparc64 'sizeof(void *) > 4'
4549         spic=$shared
4550     ;;
4551     x86)
4552         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4553         # Treat x32 as x64 for now. Note it also needs spic=$shared
4554         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4555             subarch=x86_64
4556         if test "$subarch" = "x86_64"; then
4557             spic=$shared
4558         fi
4559     ;;
4560     ppc)
4561         check_cc <<EOF && subarch="ppc64"
4562         int test[(int)sizeof(char*) - 7];
4563 EOF
4564     ;;
4565 esac
4566
4567 enable $subarch
4568 enabled spic && enable_weak pic
4569
4570 # OS specific
4571 case $target_os in
4572     aix)
4573         SHFLAGS=-shared
4574         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4575         enabled shared && add_ldflags -Wl,-brtl
4576         ;;
4577     android)
4578         disable symver
4579         enable section_data_rel_ro
4580         SLIB_INSTALL_NAME='$(SLIBNAME)'
4581         SLIB_INSTALL_LINKS=
4582         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4583         ;;
4584     haiku)
4585         prefix_default="/boot/common"
4586         network_extralibs="-lnetwork"
4587         host_libs=
4588         ;;
4589     sunos)
4590         SHFLAGS='-shared -Wl,-h,$$(@F)'
4591         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4592         network_extralibs="-lsocket -lnsl"
4593         add_cppflags -D__EXTENSIONS__
4594         # When using suncc to build, the Solaris linker will mark
4595         # an executable with each instruction set encountered by
4596         # the Solaris assembler.  As our libraries contain their own
4597         # guards for processor-specific code, instead suppress
4598         # generation of the HWCAPS ELF section on Solaris x86 only.
4599         enabled_all suncc x86 &&
4600             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4601             add_ldflags -Wl,-M,mapfile
4602         nm_default='nm -P -g'
4603         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4604         ;;
4605     netbsd)
4606         disable symver
4607         oss_indev_extralibs="-lossaudio"
4608         oss_outdev_extralibs="-lossaudio"
4609         enabled gcc || check_ldflags -Wl,-zmuldefs
4610         ;;
4611     openbsd|bitrig)
4612         disable symver
4613         SHFLAGS='-shared'
4614         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4615         SLIB_INSTALL_LINKS=
4616         oss_indev_extralibs="-lossaudio"
4617         oss_outdev_extralibs="-lossaudio"
4618         ;;
4619     dragonfly)
4620         disable symver
4621         ;;
4622     freebsd)
4623         ;;
4624     bsd/os)
4625         add_extralibs -lpoll -lgnugetopt
4626         strip="strip -d"
4627         ;;
4628     darwin)
4629         enabled ppc && add_asflags -force_cpusubtype_ALL
4630         install_name_dir_default='$(SHLIBDIR)'
4631         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4632         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4633         strip="${strip} -x"
4634         add_ldflags -Wl,-dynamic,-search_paths_first
4635         SLIBSUF=".dylib"
4636         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4637         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4638         objformat="macho"
4639         enabled x86_64 && objformat="macho64"
4640         enabled_any pic shared x86_64 ||
4641             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4642         check_header dispatch/dispatch.h &&
4643             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4644         ;;
4645     msys*)
4646         die "Native MSYS builds are discouraged, please use the MINGW environment."
4647         ;;
4648     mingw32*|mingw64*)
4649         if test $target_os = "mingw32ce"; then
4650             disable network
4651         else
4652             target_os=mingw32
4653         fi
4654         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4655         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4656         LIBTARGET=i386
4657         if enabled x86_64; then
4658             LIBTARGET="i386:x86-64"
4659         elif enabled arm; then
4660             LIBTARGET=arm-wince
4661         fi
4662         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4663         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4664         shlibdir_default="$bindir_default"
4665         SLIBPREF=""
4666         SLIBSUF=".dll"
4667         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4668         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4669         dlltool="${cross_prefix}dlltool"
4670         if check_cmd lib.exe -list; then
4671             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4672             if enabled x86_64; then
4673                 LIBTARGET=x64
4674             fi
4675         elif check_cmd $dlltool --version; then
4676             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4677         fi
4678         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4679         SLIB_INSTALL_LINKS=
4680         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4681         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4682         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4683         objformat="win32"
4684         ranlib=:
4685         enable dos_paths
4686         check_ldflags -Wl,--nxcompat,--dynamicbase
4687         # Lets work around some stupidity in binutils.
4688         # ld will strip relocations from executables even though we need them
4689         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4690         # however ld then forgets what the entry point should be (oops) so we
4691         # have to manually (re)set it.
4692         if enabled x86_32; then
4693             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4694         elif enabled x86_64; then
4695             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4696             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4697             # Set image base >4GB for extra entropy with HEASLR
4698             add_ldexeflags -Wl,--image-base,0x140000000
4699             append SHFLAGS -Wl,--image-base,0x180000000
4700         fi
4701         ;;
4702     win32|win64)
4703         disable symver
4704         if enabled shared; then
4705             # Link to the import library instead of the normal static library
4706             # for shared libs.
4707             LD_LIB='%.lib'
4708             # Cannot build both shared and static libs with MSVC or icl.
4709             disable static
4710         fi
4711         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4712         shlibdir_default="$bindir_default"
4713         SLIBPREF=""
4714         SLIBSUF=".dll"
4715         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4716         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4717         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4718         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4719         SLIB_INSTALL_LINKS=
4720         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4721         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4722         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4723         objformat="win32"
4724         ranlib=:
4725         enable dos_paths
4726         ;;
4727     cygwin*)
4728         target_os=cygwin
4729         shlibdir_default="$bindir_default"
4730         SLIBPREF="cyg"
4731         SLIBSUF=".dll"
4732         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4733         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4734         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4735         SLIB_INSTALL_LINKS=
4736         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4737         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4738         objformat="win32"
4739         enable dos_paths
4740         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4741         ;;
4742     *-dos|freedos|opendos)
4743         network_extralibs="-lsocket"
4744         objformat="coff"
4745         enable dos_paths
4746         add_cppflags -U__STRICT_ANSI__
4747         ;;
4748     linux)
4749         enable dv1394
4750         enable section_data_rel_ro
4751         ;;
4752     irix*)
4753         target_os=irix
4754         ranlib="echo ignoring ranlib"
4755         ;;
4756     os/2*)
4757         strip="lxlite -CS"
4758         objformat="aout"
4759         add_cppflags -D_GNU_SOURCE
4760         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4761         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4762         LIBSUF="_s.a"
4763         SLIBPREF=""
4764         SLIBSUF=".dll"
4765         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4766         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4767         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4768             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4769             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4770             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4771             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4772         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4773             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4774         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4775         SLIB_INSTALL_LINKS=
4776         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4777         enable dos_paths
4778         enable_weak os2threads
4779         ;;
4780     gnu/kfreebsd)
4781         add_cppflags -D_BSD_SOURCE
4782         ;;
4783     gnu)
4784         ;;
4785     qnx)
4786         add_cppflags -D_QNX_SOURCE
4787         network_extralibs="-lsocket"
4788         ;;
4789     symbian)
4790         SLIBSUF=".dll"
4791         enable dos_paths
4792         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4793         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4794         add_ldflags -Wl,--target1-abs,--no-undefined \
4795                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4796                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4797         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4798                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4799                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4800         ;;
4801     osf1)
4802         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4803         ;;
4804     minix)
4805         ;;
4806     plan9)
4807         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4808                      -D_REENTRANT_SOURCE        \
4809                      -D_RESEARCH_SOURCE         \
4810                      -DFD_SETSIZE=96            \
4811                      -DHAVE_SOCK_OPTS
4812         add_compat strtod.o strtod=avpriv_strtod
4813         network_extralibs='-lbsd'
4814         exeobjs=compat/plan9/main.o
4815         disable ffserver
4816         cp_f='cp'
4817         ;;
4818     none)
4819         ;;
4820     *)
4821         die "Unknown OS '$target_os'."
4822         ;;
4823 esac
4824
4825 # test if creating links works
4826 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4827 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4828 mkdir "$link_dest"
4829 $ln_s "$link_dest" "$link_name"
4830 touch "$link_dest/test_file"
4831 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4832     # create link to source path
4833     [ -e src ] && rm src
4834     $ln_s "$source_path" src
4835     source_link=src
4836 else
4837     # creating directory links doesn't work
4838     # fall back to using the full source path
4839     source_link="$source_path"
4840 fi
4841 # cleanup
4842 rm -r "$link_dest"
4843 rm -r "$link_name"
4844
4845 # determine libc flavour
4846
4847 probe_libc(){
4848     pfx=$1
4849     pfx_no_=${pfx%_}
4850     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4851     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4852         eval ${pfx}libc_type=uclibc
4853         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4854     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4855         eval ${pfx}libc_type=glibc
4856         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4857     # MinGW headers can be installed on Cygwin, so check for newlib first.
4858     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4859         eval ${pfx}libc_type=newlib
4860         add_${pfx}cppflags -U__STRICT_ANSI__
4861     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4862     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4863         eval ${pfx}libc_type=mingw64
4864         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4865             add_compat msvcrt/snprintf.o
4866             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4867         fi
4868         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4869         eval test \$${pfx_no_}cc_type = "gcc" &&
4870             add_${pfx}cppflags -D__printf__=__gnu_printf__
4871     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4872          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4873         eval ${pfx}libc_type=mingw32
4874         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4875             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4876             die "ERROR: MinGW32 runtime version must be >= 3.15."
4877         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4878         eval test \$${pfx_no_}cc_type = "gcc" &&
4879             add_${pfx}cppflags -D__printf__=__gnu_printf__
4880     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4881         eval ${pfx}libc_type=msvcrt
4882         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4883             if [ "$pfx" = host_ ]; then
4884                 add_host_cppflags -Dsnprintf=_snprintf
4885             else
4886                 add_compat strtod.o strtod=avpriv_strtod
4887                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4888                                              _snprintf=avpriv_snprintf  \
4889                                              vsnprintf=avpriv_vsnprintf
4890             fi
4891         fi
4892         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4893         # 0x601 by default unless something else is set by the user.
4894         # This can easily lead to us detecting functions only present
4895         # in such new versions and producing binaries requiring windows 7.0.
4896         # Therefore explicitly set the default to XP unless the user has
4897         # set something else on the command line.
4898         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4899         # family. For these cases, configure is free to use any functions
4900         # found in the SDK headers by default. (Alternatively, we could force
4901         # _WIN32_WINNT to 0x0602 in that case.)
4902         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4903             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4904 #ifdef WINAPI_FAMILY
4905 #include <winapifamily.h>
4906 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4907 #error not desktop
4908 #endif
4909 #endif
4910 EOF
4911     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4912         eval ${pfx}libc_type=klibc
4913     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4914         eval ${pfx}libc_type=bionic
4915     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4916         eval ${pfx}libc_type=solaris
4917         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4918     fi
4919     check_${pfx}cc <<EOF
4920 #include <time.h>
4921 void *v = localtime_r;
4922 EOF
4923 test "$?" != 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
4924 #include <time.h>
4925 void *v = localtime_r;
4926 EOF
4927
4928 }
4929
4930 probe_libc
4931 test -n "$libc_type" && enable libc_$libc_type
4932 probe_libc host_
4933 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4934
4935 case $libc_type in
4936     bionic)
4937         add_compat strtod.o strtod=avpriv_strtod
4938         ;;
4939 esac
4940
4941 # hacks for compiler/libc/os combinations
4942
4943 if enabled_all tms470 libc_glibc; then
4944     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4945     add_cppflags -D__USER_LABEL_PREFIX__=
4946     add_cppflags -D__builtin_memset=memset
4947     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4948     add_cflags   -pds=48    # incompatible redefinition of macro
4949 fi
4950
4951 if enabled_all ccc libc_glibc; then
4952     add_ldflags -Wl,-z,now  # calls to libots crash without this
4953 fi
4954
4955 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4956     add_cppflags '-I\$(SRC_PATH)/compat/float'
4957
4958 esc(){
4959     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4960 }
4961
4962 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4963
4964 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4965
4966 set_default libdir
4967 : ${shlibdir_default:="$libdir"}
4968 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4969
4970 set_default $PATHS_LIST
4971 set_default nm
4972
4973 # we need to build at least one lib type
4974 if ! enabled_any static shared; then
4975     cat <<EOF
4976 At least one library type must be built.
4977 Specify --enable-static to build the static libraries or --enable-shared to
4978 build the shared libraries as well. To only build the shared libraries specify
4979 --disable-static in addition to --enable-shared.
4980 EOF
4981     exit 1
4982 fi
4983
4984 die_license_disabled() {
4985     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4986 }
4987
4988 die_license_disabled_gpl() {
4989     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4990 }
4991
4992 die_license_disabled gpl frei0r
4993 die_license_disabled gpl libcdio
4994 die_license_disabled gpl librubberband
4995 die_license_disabled gpl libsmbclient
4996 die_license_disabled gpl libutvideo
4997 die_license_disabled gpl libvidstab
4998 die_license_disabled gpl libx264
4999 die_license_disabled gpl libx265
5000 die_license_disabled gpl libxavs
5001 die_license_disabled gpl libxvid
5002 die_license_disabled gpl x11grab
5003
5004 die_license_disabled nonfree cuda
5005 die_license_disabled nonfree libfaac
5006 die_license_disabled nonfree libnpp
5007 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5008 enabled gpl && die_license_disabled_gpl nonfree openssl
5009
5010 die_license_disabled version3 gmp
5011 die_license_disabled version3 libopencore_amrnb
5012 die_license_disabled version3 libopencore_amrwb
5013 die_license_disabled version3 libsmbclient
5014 die_license_disabled version3 libvo_amrwbenc
5015
5016 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5017
5018 disabled optimizations || check_cflags -fomit-frame-pointer
5019
5020 enable_weak_pic() {
5021     disabled pic && return
5022     enable pic
5023     add_cppflags -DPIC
5024     case "$target_os" in
5025     mingw*|cygwin*)
5026         ;;
5027     *)
5028         add_cflags -fPIC
5029         ;;
5030     esac
5031     add_asflags  -fPIC
5032 }
5033
5034 enabled pic && enable_weak_pic
5035
5036 check_cc <<EOF || die "Symbol mangling check failed."
5037 int ff_extern;
5038 EOF
5039 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5040 extern_prefix=${sym%%ff_extern*}
5041
5042 check_cc <<EOF && enable_weak inline_asm
5043 void foo(void) { __asm__ volatile ("" ::); }
5044 EOF
5045
5046 _restrict=
5047 for restrict_keyword in restrict __restrict__ __restrict; do
5048     check_cc <<EOF && _restrict=$restrict_keyword && break
5049 void foo(char * $restrict_keyword p);
5050 EOF
5051 done
5052
5053 check_cc <<EOF && enable pragma_deprecated
5054 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5055 EOF
5056
5057 check_cc <<EOF && enable attribute_packed
5058 struct { int x; } __attribute__((packed)) x;
5059 EOF
5060
5061 check_cc <<EOF && enable attribute_may_alias
5062 union { int x; } __attribute__((may_alias)) x;
5063 EOF
5064
5065 check_cc <<EOF || die "endian test failed"
5066 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5067 EOF
5068 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5069
5070 if ! enabled ppc64 || enabled bigendian; then
5071     disable vsx
5072 fi
5073
5074 check_gas() {
5075     log "check_gas using '$as' as AS"
5076     # :vararg is used on aarch64, arm and ppc altivec
5077     check_as <<EOF || return 1
5078 .macro m n, y:vararg=0
5079 \n: .int \y
5080 .endm
5081 m x
5082 EOF
5083     # .altmacro is only used in arm asm
5084     ! enabled arm || check_as <<EOF || return 1
5085 .altmacro
5086 EOF
5087     enable gnu_as
5088     return 0
5089 }
5090
5091 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5092     nogas=:
5093     enabled_any arm aarch64 && nogas=die
5094     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5095     as_noop=-v
5096
5097     case $as_type in
5098         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5099         gcc)  gaspp_as_type=gas ;;
5100         *)    gaspp_as_type=$as_type ;;
5101     esac
5102
5103     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5104
5105     test "${as#*gas-preprocessor.pl}" != "$as" ||
5106     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5107         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5108
5109     if ! check_gas ; then
5110         as=${gas:=$as}
5111         check_gas || \
5112             $nogas "GNU assembler not found, install/update gas-preprocessor"
5113     fi
5114
5115     check_as <<EOF && enable as_func
5116 .func test
5117 .endfunc
5118 EOF
5119 fi
5120
5121 check_inline_asm inline_asm_labels '"1:\n"'
5122
5123 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5124
5125 if enabled aarch64; then
5126     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5127     # internal assembler in clang 3.3 does not support this instruction
5128     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5129     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5130
5131     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5132
5133 elif enabled alpha; then
5134
5135     check_cflags -mieee
5136
5137 elif enabled arm; then
5138
5139     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5140
5141     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5142 float func(float a, float b){ return a+b; }
5143 EOF
5144
5145     enabled thumb && check_cflags -mthumb || check_cflags -marm
5146
5147     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5148         enable vfp_args
5149     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5150         enable vfp_args
5151     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5152         case "${cross_prefix:-$cc}" in
5153             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5154             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5155 __asm__ (".eabi_attribute 28, 1");
5156 int main(void) { return 0; }
5157 EOF
5158         esac
5159         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5160     fi
5161
5162     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5163     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5164     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5165     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5166     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5167     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5168     enabled setend  && check_insn setend  'setend be'
5169
5170     [ $target_os = linux ] || [ $target_os = android ] ||
5171         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5172             $ARCH_EXT_LIST_ARM
5173
5174     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5175
5176     check_as <<EOF && enable as_dn_directive
5177 ra .dn d0.i16
5178 .unreq ra
5179 EOF
5180
5181     # llvm's integrated assembler supports .object_arch from llvm 3.5
5182     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5183 .object_arch armv4
5184 EOF
5185
5186     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5187
5188 elif enabled mips; then
5189
5190     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5191     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5192     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5193
5194     # Enable minimum ISA based on selected options
5195     if enabled mips64; then
5196         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5197         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5198         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5199     else
5200         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5201         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5202         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5203         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5204     fi
5205
5206     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5207     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5208     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5209     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5210     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5211
5212 elif enabled parisc; then
5213
5214     if enabled gcc; then
5215         case $($cc -dumpversion) in
5216             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5217         esac
5218     fi
5219
5220 elif enabled ppc; then
5221
5222     enable local_aligned_8 local_aligned_16 local_aligned_32
5223
5224     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5225     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5226     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5227     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5228
5229     # AltiVec flags: The FSF version of GCC differs from the Apple version
5230     if enabled altivec; then
5231         check_cflags -maltivec -mabi=altivec &&
5232         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5233         check_cflags -faltivec
5234
5235         # check if our compiler supports Motorola AltiVec C API
5236         check_cc <<EOF || disable altivec
5237 $inc_altivec_h
5238 int main(void) {
5239     vector signed int v1 = (vector signed int) { 0 };
5240     vector signed int v2 = (vector signed int) { 1 };
5241     v1 = vec_add(v1, v2);
5242     return 0;
5243 }
5244 EOF
5245
5246         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5247     fi
5248
5249     if enabled vsx; then
5250         check_cflags -mvsx &&
5251         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5252     fi
5253
5254     if enabled power8; then
5255         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5256     fi
5257
5258 elif enabled x86; then
5259
5260     check_builtin rdtsc    intrin.h   "__rdtsc()"
5261     check_builtin mm_empty mmintrin.h "_mm_empty()"
5262
5263     enable local_aligned_8 local_aligned_16 local_aligned_32
5264
5265     # check whether EBP is available on x86
5266     # As 'i' is stored on the stack, this program will crash
5267     # if the base pointer is used to access it because the
5268     # base pointer is cleared in the inline assembly code.
5269     check_exec_crash <<EOF && enable ebp_available
5270 volatile int i=0;
5271 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5272 return i;
5273 EOF
5274
5275     # check whether EBX is available on x86
5276     check_inline_asm ebx_available '""::"b"(0)' &&
5277         check_inline_asm ebx_available '"":::"%ebx"'
5278
5279     # check whether xmm clobbers are supported
5280     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5281
5282     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5283         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5284
5285     # check whether binutils is new enough to compile SSSE3/MMXEXT
5286     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5287     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5288
5289     if ! disabled_any asm mmx yasm; then
5290         if check_cmd $yasmexe --version; then
5291             enabled x86_64 && yasm_extra="-m amd64"
5292             yasm_debug="-g dwarf2"
5293         elif check_cmd nasm -v; then
5294             yasmexe=nasm
5295             yasm_debug="-g -F dwarf"
5296             if enabled x86_64; then
5297                 case "$objformat" in
5298                     elf)   objformat=elf64 ;;
5299                     win32) objformat=win64 ;;
5300                 esac
5301             fi
5302         fi
5303
5304         YASMFLAGS="-f $objformat $yasm_extra"
5305         enabled pic               && append YASMFLAGS "-DPIC"
5306         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5307         case "$objformat" in
5308             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5309         esac
5310
5311         check_yasm "movbe ecx, [5]" && enable yasm ||
5312             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5313         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5314         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5315         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5316         check_yasm "CPU amdnop" || disable cpunop
5317     fi
5318
5319     case "$cpu" in
5320         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5321             disable fast_clz
5322         ;;
5323     esac
5324
5325 fi
5326
5327 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5328
5329 check_ldflags -Wl,--as-needed
5330 check_ldflags -Wl,-z,noexecstack
5331
5332 if check_func dlopen; then
5333     ldl=
5334 elif check_func dlopen -ldl; then
5335     ldl=-ldl
5336 fi
5337
5338 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5339 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5340 frei0r_filter_extralibs='$ldl'
5341 frei0r_src_filter_extralibs='$ldl'
5342 ladspa_filter_extralibs='$ldl'
5343 nvenc_encoder_extralibs='$ldl'
5344 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5345 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5346
5347 if ! disabled network; then
5348     check_func getaddrinfo $network_extralibs
5349     check_func inet_aton $network_extralibs
5350
5351     check_type netdb.h "struct addrinfo"
5352     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5353     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5354     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5355     check_type poll.h "struct pollfd"
5356     check_type netinet/sctp.h "struct sctp_event_subscribe"
5357     check_struct "sys/socket.h" "struct msghdr" msg_flags
5358     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5359     check_type netinet/in.h "struct sockaddr_in6"
5360     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5361     check_type "sys/types.h sys/socket.h" socklen_t
5362
5363     # Prefer arpa/inet.h over winsock2
5364     if check_header arpa/inet.h ; then
5365         check_func closesocket
5366     elif check_header winsock2.h ; then
5367         check_func_headers winsock2.h closesocket -lws2 &&
5368             network_extralibs="-lws2" ||
5369         { check_func_headers winsock2.h closesocket -lws2_32 &&
5370             network_extralibs="-lws2_32"; } || disable winsock2_h network
5371         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5372
5373         check_type ws2tcpip.h socklen_t
5374         check_type ws2tcpip.h "struct addrinfo"
5375         check_type ws2tcpip.h "struct group_source_req"
5376         check_type ws2tcpip.h "struct ip_mreq_source"
5377         check_type ws2tcpip.h "struct ipv6_mreq"
5378         check_type winsock2.h "struct pollfd"
5379         check_struct winsock2.h "struct sockaddr" sa_len
5380         check_type ws2tcpip.h "struct sockaddr_in6"
5381         check_type ws2tcpip.h "struct sockaddr_storage"
5382     else
5383         disable network
5384     fi
5385 fi
5386
5387 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5388 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5389 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5390 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5391 check_builtin sarestart signal.h "SA_RESTART"
5392 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5393 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5394 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5395 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5396 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5397
5398 case "$custom_allocator" in
5399     jemalloc)
5400         # jemalloc by default does not use a prefix
5401         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5402     ;;
5403     tcmalloc)
5404         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5405         malloc_prefix=tc_
5406     ;;
5407 esac
5408
5409 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5410 check_func  ${malloc_prefix}memalign            && enable memalign
5411 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5412
5413 check_func  access
5414 check_func  arc4random
5415 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5416 check_func  fcntl
5417 check_func  fork
5418 check_func  gethrtime
5419 check_func  getopt
5420 check_func  getrusage
5421 check_func  gettimeofday
5422 check_func  isatty
5423 check_func  mach_absolute_time
5424 check_func  mkstemp
5425 check_func  mmap
5426 check_func  mprotect
5427 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5428 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5429 check_func  sched_getaffinity
5430 check_func  setrlimit
5431 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5432 check_func  strerror_r
5433 check_func  sysconf
5434 check_func  sysctl
5435 check_func  usleep
5436
5437 check_func_headers conio.h kbhit
5438 check_func_headers io.h setmode
5439 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5440 check_func_headers stdlib.h getenv
5441 check_func_headers sys/stat.h lstat
5442
5443 check_func_headers windows.h CoTaskMemFree -lole32
5444 check_func_headers windows.h GetProcessAffinityMask
5445 check_func_headers windows.h GetProcessTimes
5446 check_func_headers windows.h GetSystemTimeAsFileTime
5447 check_func_headers windows.h MapViewOfFile
5448 check_func_headers windows.h PeekNamedPipe
5449 check_func_headers windows.h SetConsoleTextAttribute
5450 check_func_headers windows.h SetConsoleCtrlHandler
5451 check_func_headers windows.h Sleep
5452 check_func_headers windows.h VirtualAlloc
5453 check_struct windows.h "CONDITION_VARIABLE" Ptr
5454 check_func_headers glob.h glob
5455 enabled xlib &&
5456     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5457
5458 check_header AudioToolbox/AudioToolbox.h
5459 check_header direct.h
5460 check_header dirent.h
5461 check_header dlfcn.h
5462 check_header d3d11.h
5463 check_header dxva.h
5464 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5465 check_header io.h
5466 check_header libcrystalhd/libcrystalhd_if.h
5467 check_header mach/mach_time.h
5468 check_header malloc.h
5469 check_header net/udplite.h
5470 check_header poll.h
5471 check_header sys/mman.h
5472 check_header sys/param.h
5473 check_header sys/resource.h
5474 check_header sys/select.h
5475 check_header sys/time.h
5476 check_header sys/un.h
5477 check_header termios.h
5478 check_header unistd.h
5479 check_header valgrind/valgrind.h
5480 check_header vdpau/vdpau.h
5481 check_header vdpau/vdpau_x11.h
5482 check_header VideoDecodeAcceleration/VDADecoder.h
5483 check_header VideoToolbox/VideoToolbox.h
5484 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5485 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5486 check_header windows.h
5487 check_header X11/extensions/XvMClib.h
5488 check_header asm/types.h
5489
5490 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5491 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5492 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5493 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5494
5495 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5496
5497 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5498 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5499 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5500 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5501 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5502
5503 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5504 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5505 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5506 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5507 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5508 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5509
5510 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5511
5512 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5513
5514 if ! disabled w32threads && ! enabled pthreads; then
5515     check_func_headers "windows.h process.h" _beginthreadex &&
5516         enable w32threads || disable w32threads
5517     if ! enabled w32threads && enabled winrt; then
5518         check_func_headers "windows.h" CreateThread &&
5519             enable w32threads || disable w32threads
5520     fi
5521 fi
5522
5523 # check for some common methods of building with pthread support
5524 # do this before the optional library checks as some of them require pthreads
5525 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5526     enable pthreads
5527     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5528         add_cflags -pthread
5529         add_extralibs -pthread
5530     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5531         add_cflags -pthreads
5532         add_extralibs -pthreads
5533     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5534         add_cflags -ldl -pthread
5535         add_extralibs -ldl -pthread
5536     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5537         add_extralibs -lpthreadGC2
5538     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5539         :
5540     elif ! check_func pthread_join && ! check_func pthread_create; then
5541         disable pthreads
5542     fi
5543     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5544 fi
5545
5546
5547 if enabled pthreads; then
5548   check_func pthread_cancel
5549 fi
5550
5551 enabled pthreads &&
5552     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5553
5554 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5555 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5556 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5557
5558 check_lib math.h sin -lm && LIBM="-lm"
5559 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5560
5561 atan2f_args=2
5562 copysign_args=2
5563 hypot_args=2
5564 ldexpf_args=2
5565 powf_args=2
5566
5567 for func in $MATH_FUNCS; do
5568     eval check_mathfunc $func \${${func}_args:-1}
5569 done
5570
5571 for func in $COMPLEX_FUNCS; do
5572     eval check_complexfunc $func \${${func}_args:-1}
5573 done
5574
5575 # these are off by default, so fail if requested and not available
5576 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5577 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5578                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5579 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5580                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5581                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5582 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
5583                                die "ERROR: CUDA not found"; }
5584 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5585 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5586 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5587 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5588 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5589 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5590 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5591 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5592                                check_lib2 "dlfcn.h" dlopen -ldl; }
5593 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5594 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5595 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5596 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5597 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5598 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5599                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5600                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5601 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5602 enabled libebur128        && require ebur128 ebur128.h ebur128_relative_threshold -lebur128
5603 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5604 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5605                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5606                                  warn "using libfdk without pkg-config"; } }
5607 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"
5608 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5609 enabled fontconfig        && enable libfontconfig
5610 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5611 enabled libfreetype       && require_libfreetype
5612 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5613 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5614 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5615                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5616                                done || die "ERROR: libgsm not found"; }
5617 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5618 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5619 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5620 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5621 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5622 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5623 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5624 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5625 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5626 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5627                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5628                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5629                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5630 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5631 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5632                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5633                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5634                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5635                                die "ERROR: libopenjpeg not found"; }
5636 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5637 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5638 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5639 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5640 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5641 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5642 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5643                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5644 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5645 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5646 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5647 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5648 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5649 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5650 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5651                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5652                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5653 enabled libutvideo        && { require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++ &&
5654                                check_cpp_condition utvideo/utvideo.h "!defined(UTVIDEO_VERSION_MAJOR) || UTVIDEO_VERSION_MAJOR < 15 || UTVIDEO_VERSION_MAJOR == 15 && UTVIDEO_VERSION_MINOR < 4" ||
5655                                die "ERROR: libutvideo version must be <= 15.3.0."; }
5656 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5657 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5658 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5659 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5660
5661 enabled libvpx            && {
5662     enabled libvpx_vp8_decoder && {
5663         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5664             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5665                 die "ERROR: libvpx decoder version must be >=0.9.1";
5666     }
5667     enabled libvpx_vp8_encoder && {
5668         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5669             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5670                 die "ERROR: libvpx encoder version must be >=0.9.7";
5671     }
5672     enabled libvpx_vp9_decoder && {
5673         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5674             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5675                 disable libvpx_vp9_decoder;
5676     }
5677     enabled libvpx_vp9_encoder && {
5678         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5679             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5680                 disable libvpx_vp9_encoder;
5681     }
5682     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5683         die "libvpx enabled but no supported decoders found"
5684     fi
5685 }
5686
5687 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5688 enabled libwebp           && {
5689     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5690     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5691 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5692                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5693                                  warn "using libx264 without pkg-config"; } } &&
5694                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5695                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5696                              { check_cpp_condition x264.h "X264_MPEG2" &&
5697                                enable libx262; }
5698 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5699                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5700                                die "ERROR: libx265 version must be >= 68."; }
5701 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5702 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5703 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5704 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5705 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5706                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5707                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5708 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5709 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5710                                 { ! enabled cross_compile && {
5711                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5712                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5713                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5714                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5715                                die "ERROR: mmal not found"; }
5716 enabled mmal &&
5717     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5718      die "ERROR: mmal firmware headers too old")
5719
5720 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5721 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5722                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
5723                                die "ERROR: NVENC API version 5 or older is not supported"; } &&
5724                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5725 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5726                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5727                                die "ERROR: openal not found"; } &&
5728                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5729                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5730 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5731                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5732                                die "ERROR: opencl not found"; } &&
5733                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5734                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5735                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5736 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5737                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5738                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5739                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5740                                die "ERROR: opengl not found."
5741                              }
5742 enabled omx_rpi && enable omx
5743 enabled omx               && { check_header OMX_Core.h ||
5744                                 { ! enabled cross_compile && enabled omx_rpi && {
5745                                     add_cflags -isystem/opt/vc/include/IL ; }
5746                                 check_header OMX_Core.h ; } ||
5747                                die "ERROR: OpenMAX IL headers not found"; }
5748 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5749                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5750                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5751                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5752                                die "ERROR: openssl not found"; }
5753 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5754
5755 # libdc1394 check
5756 if enabled libdc1394; then
5757     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5758         enable libdc1394_2; } ||
5759     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5760         enable libdc1394_1; } ||
5761     die "ERROR: No version of libdc1394 found "
5762 fi
5763
5764 if enabled gcrypt; then
5765     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5766     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5767         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5768         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5769         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5770             die "ERROR: gcrypt not found"
5771         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5772     else
5773         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5774     fi
5775 fi
5776
5777 if ! disabled sdl; then
5778     SDL_CONFIG="${cross_prefix}sdl-config"
5779     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5780         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5781         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5782         enable sdl
5783     else
5784         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5785             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5786             sdl_libs=$("${SDL_CONFIG}" --libs)
5787             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5788             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5789             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5790             enable sdl
5791         elif enabled sdl ; then
5792             die "ERROR: SDL not found"
5793         else
5794             disable sdl
5795         fi
5796     fi
5797     if test $target_os = "mingw32"; then
5798         sdl_libs="$sdl_libs -mconsole"
5799     fi
5800 fi
5801 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5802
5803 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5804     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5805     enable securetransport; }
5806
5807 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5808                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5809
5810 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5811 enabled makeinfo \
5812     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5813     && enable makeinfo_html || disable makeinfo_html
5814 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5815 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5816 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5817 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5818
5819 check_header linux/fb.h
5820 check_header linux/videodev.h
5821 check_header linux/videodev2.h
5822 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5823
5824 check_header sys/videoio.h
5825 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5826
5827 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5828 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5829 # w32api 3.12 had it defined wrong
5830 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5831
5832 check_type "dshow.h" IBaseFilter
5833
5834 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5835 { check_header dev/bktr/ioctl_meteor.h &&
5836   check_header dev/bktr/ioctl_bt848.h; } ||
5837 { check_header machine/ioctl_meteor.h &&
5838   check_header machine/ioctl_bt848.h; } ||
5839 { check_header dev/video/meteor/ioctl_meteor.h &&
5840   check_header dev/video/bktr/ioctl_bt848.h; } ||
5841 check_header dev/ic/bt8xx.h
5842
5843 check_header sndio.h
5844 if check_struct sys/soundcard.h audio_buf_info bytes; then
5845     enable_safe sys/soundcard.h
5846 else
5847     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5848     #include <sys/soundcard.h>
5849     audio_buf_info abc;
5850 EOF
5851 fi
5852 check_header soundcard.h
5853
5854 enabled_any alsa_indev alsa_outdev &&
5855     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5856
5857 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5858     check_func jack_port_get_latency_range -ljack
5859
5860 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5861
5862 if enabled libcdio; then
5863     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5864     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5865     die "ERROR: No usable libcdio/cdparanoia found"
5866 fi
5867
5868 enabled xlib &&
5869     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5870
5871 if ! disabled libxcb; then
5872     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5873         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5874     } && disable x11grab && enable libxcb
5875
5876 if enabled libxcb; then
5877     disabled libxcb_shm || {
5878         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5879             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5880         } && check_header sys/shm.h && enable libxcb_shm; }
5881
5882     disabled libxcb_xfixes || {
5883         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5884             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5885         } && enable libxcb_xfixes; }
5886
5887     disabled libxcb_shape || {
5888         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5889             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5890         } && enable libxcb_shape; }
5891
5892     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5893     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5894 fi
5895 fi
5896
5897 if enabled x11grab; then
5898     enabled xlib || die "ERROR: Xlib not found"
5899     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5900     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5901 fi
5902
5903 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5904
5905 enabled dxva2api_h &&
5906     check_cc <<EOF && enable dxva2api_cobj
5907 #define _WIN32_WINNT 0x0600
5908 #define COBJMACROS
5909 #include <windows.h>
5910 #include <d3d9.h>
5911 #include <dxva2api.h>
5912 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5913 EOF
5914
5915 enabled vaapi &&
5916     check_lib va/va.h vaInitialize -lva ||
5917     disable vaapi
5918
5919 enabled vaapi &&
5920     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
5921     disable vaapi
5922
5923 if enabled vaapi ; then
5924     enabled xlib &&
5925     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5926     enable vaapi_x11
5927
5928     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
5929     enable vaapi_drm
5930 fi
5931
5932 enabled vdpau &&
5933     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5934     disable vdpau
5935
5936 enabled vdpau && enabled xlib &&
5937     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5938     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5939     enable vdpau_x11
5940
5941 # Funny iconv installations are not unusual, so check it after all flags have been set
5942 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5943
5944 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5945
5946 # add some useful compiler flags if supported
5947 check_cflags -Wdeclaration-after-statement
5948 check_cflags -Wall
5949 check_cflags -Wdisabled-optimization
5950 check_cflags -Wpointer-arith
5951 check_cflags -Wredundant-decls
5952 check_cflags -Wwrite-strings
5953 check_cflags -Wtype-limits
5954 check_cflags -Wundef
5955 check_cflags -Wmissing-prototypes
5956 check_cflags -Wno-pointer-to-int-cast
5957 check_cflags -Wstrict-prototypes
5958 check_cflags -Wempty-body
5959 enabled extra_warnings && check_cflags -Winline
5960 enabled extra_warnings && check_cflags -Wcast-qual
5961
5962 check_disable_warning(){
5963     warning_flag=-W${1#-Wno-}
5964     test_cflags $warning_flag && add_cflags $1
5965 }
5966
5967 check_disable_warning -Wno-parentheses
5968 check_disable_warning -Wno-switch
5969 check_disable_warning -Wno-format-zero-length
5970 check_disable_warning -Wno-pointer-sign
5971 check_disable_warning -Wno-unused-const-variable
5972
5973 # add some linker flags
5974 check_ldflags -Wl,--warn-common
5975 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5976 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5977 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5978 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5979
5980 # add some strip flags
5981 # -wN '..@*' is more selective than -x, but not available everywhere.
5982 check_stripflags -wN \'..@*\' || check_stripflags -x
5983
5984 enabled neon_clobber_test &&
5985     check_ldflags -Wl,--wrap,avcodec_open2              \
5986                   -Wl,--wrap,avcodec_decode_audio4      \
5987                   -Wl,--wrap,avcodec_decode_video2      \
5988                   -Wl,--wrap,avcodec_decode_subtitle2   \
5989                   -Wl,--wrap,avcodec_encode_audio2      \
5990                   -Wl,--wrap,avcodec_encode_video2      \
5991                   -Wl,--wrap,avcodec_encode_subtitle    \
5992                   -Wl,--wrap,swr_convert                \
5993                   -Wl,--wrap,avresample_convert ||
5994     disable neon_clobber_test
5995
5996 enabled xmm_clobber_test &&
5997     check_ldflags -Wl,--wrap,avcodec_open2              \
5998                   -Wl,--wrap,avcodec_decode_audio4      \
5999                   -Wl,--wrap,avcodec_decode_video2      \
6000                   -Wl,--wrap,avcodec_decode_subtitle2   \
6001                   -Wl,--wrap,avcodec_encode_audio2      \
6002                   -Wl,--wrap,avcodec_encode_video2      \
6003                   -Wl,--wrap,avcodec_encode_subtitle    \
6004                   -Wl,--wrap,swr_convert                \
6005                   -Wl,--wrap,avresample_convert         \
6006                   -Wl,--wrap,sws_scale ||
6007     disable xmm_clobber_test
6008
6009 echo "X { local: *; };" > $TMPV
6010 if test_ldflags -Wl,--version-script,$TMPV; then
6011     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
6012 elif test_ldflags -Wl,-M,$TMPV; then
6013     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
6014 fi
6015
6016 check_cc <<EOF && enable symver_asm_label
6017 void ff_foo(void) __asm__ ("av_foo@VERSION");
6018 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6019 EOF
6020     check_cc <<EOF && enable symver_gnu_asm
6021 __asm__(".symver ff_foo,av_foo@VERSION");
6022 void ff_foo(void) {}
6023 EOF
6024
6025 if [ -z "$optflags" ]; then
6026     if enabled small; then
6027         optflags=$cflags_size
6028     elif enabled optimizations; then
6029         optflags=$cflags_speed
6030     else
6031         optflags=$cflags_noopt
6032     fi
6033 fi
6034
6035 check_optflags(){
6036     check_cflags "$@"
6037     enabled lto && check_ldflags "$@"
6038 }
6039
6040
6041 if enabled lto; then
6042     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6043     check_cflags  -flto
6044     check_ldflags -flto $cpuflags
6045     disable inline_asm_direct_symbol_refs
6046 fi
6047
6048 check_optflags $optflags
6049 check_optflags -fno-math-errno
6050 check_optflags -fno-signed-zeros
6051
6052 enabled ftrapv && check_cflags -ftrapv
6053
6054 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6055 int x;
6056 EOF
6057
6058
6059 if enabled icc; then
6060     # Just warnings, no remarks
6061     check_cflags -w1
6062     # -wd: Disable following warnings
6063     # 144, 167, 556: -Wno-pointer-sign
6064     # 188: enumerated type mixed with another type
6065     # 1292: attribute "foo" ignored
6066     # 1419: external declaration in primary source file
6067     # 10006: ignoring unknown option -fno-signed-zeros
6068     # 10148: ignoring unknown option -Wno-parentheses
6069     # 10156: ignoring option '-W'; no argument required
6070     # 13200: No EMMS instruction before call to function
6071     # 13203: No EMMS instruction before return from function
6072     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6073     # 11030: Warning unknown option --as-needed
6074     # 10156: ignoring option '-export'; no argument required
6075     check_ldflags -wd10156,11030
6076     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6077     enable ebp_available
6078     # The test above does not test linking
6079     enabled lto && disable symver_asm_label
6080     if enabled x86_32; then
6081         icc_version=$($cc -dumpversion)
6082         test ${icc_version%%.*} -ge 11 &&
6083             check_cflags -falign-stack=maintain-16-byte ||
6084             disable aligned_stack
6085     fi
6086 elif enabled ccc; then
6087     # disable some annoying warnings
6088     add_cflags -msg_disable bitnotint
6089     add_cflags -msg_disable mixfuncvoid
6090     add_cflags -msg_disable nonstandcast
6091     add_cflags -msg_disable unsupieee
6092 elif enabled gcc; then
6093     case $gcc_basever in
6094         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
6095         4.*)                 check_optflags -fno-tree-vectorize ;;
6096         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
6097     esac
6098     check_cflags -Werror=format-security
6099     check_cflags -Werror=implicit-function-declaration
6100     check_cflags -Werror=missing-prototypes
6101     check_cflags -Werror=return-type
6102     check_cflags -Werror=vla
6103     check_cflags -Wformat
6104     check_cflags -fdiagnostics-color=auto
6105     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6106 elif enabled llvm_gcc; then
6107     check_cflags -mllvm -stack-alignment=16
6108 elif enabled clang; then
6109     check_cflags -mllvm -stack-alignment=16
6110     check_cflags -Qunused-arguments
6111     check_cflags -Werror=implicit-function-declaration
6112     check_cflags -Werror=missing-prototypes
6113     check_cflags -Werror=return-type
6114 elif enabled cparser; then
6115     add_cflags -Wno-missing-variable-declarations
6116     add_cflags -Wno-empty-statement
6117 elif enabled armcc; then
6118     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6119     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6120     # 2523: use of inline assembly is deprecated
6121     add_cflags -W${armcc_opt},--diag_suppress=2523
6122     add_cflags -W${armcc_opt},--diag_suppress=1207
6123     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6124     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6125     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6126     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6127 elif enabled tms470; then
6128     add_cflags -pds=824 -pds=837
6129     disable inline_asm
6130 elif enabled pathscale; then
6131     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6132 elif enabled_any msvc icl; then
6133     enabled x86_32 && disable aligned_stack
6134     enabled_all x86_32 debug && add_cflags -Oy-
6135     enabled debug && add_ldflags -debug
6136     enable pragma_deprecated
6137     if enabled icl; then
6138         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6139         # (correctly) on icl 13.x.
6140         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6141             add_cflags -Qansi-alias
6142         # Some inline asm is not compilable in debug
6143         if enabled debug; then
6144             disable ebp_available
6145             disable ebx_available
6146         fi
6147     fi
6148     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6149     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6150     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6151     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6152     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6153     # MSVC 2013 and newer can handle it fine.
6154     # If this declspec fails, force including stdlib.h before the restrict redefinition
6155     # happens in config.h.
6156     if [ $_restrict != restrict ]; then
6157         check_cc <<EOF || add_cflags -FIstdlib.h
6158 __declspec($_restrict) void* foo(int);
6159 EOF
6160     fi
6161     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6162 fi
6163
6164 for pfx in "" host_; do
6165     varname=${pfx%_}cc_type
6166     eval "type=\$$varname"
6167     if [ $type = "msvc" ]; then
6168         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6169 static inline int foo(int a) { return a; }
6170 EOF
6171     fi
6172 done
6173
6174 case $as_type in
6175     clang)
6176         add_asflags -Qunused-arguments
6177     ;;
6178 esac
6179
6180 case $ld_type in
6181     clang)
6182         check_ldflags -Qunused-arguments
6183     ;;
6184 esac
6185
6186 case $target_os in
6187     osf1)
6188         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6189     ;;
6190     plan9)
6191         add_cppflags -Dmain=plan9_main
6192     ;;
6193 esac
6194
6195 enable frame_thread_encoder
6196
6197 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6198
6199 check_deps $CONFIG_LIST       \
6200            $CONFIG_EXTRA      \
6201            $HAVE_LIST         \
6202            $ALL_COMPONENTS    \
6203
6204 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"
6205
6206
6207 if test $target_os = "haiku"; then
6208     disable memalign
6209     disable posix_memalign
6210 fi
6211
6212 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6213     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6214     enable dxva2_lib
6215
6216 ! enabled_any memalign posix_memalign aligned_malloc &&
6217     enabled simd_align_16 && enable memalign_hack
6218
6219 # add_dep lib dep
6220 # -> enable ${lib}_deps_${dep}
6221 # -> add $dep to ${lib}_deps only once
6222 add_dep() {
6223     lib=$1
6224     dep=$2
6225     enabled "${lib}_deps_${dep}" && return 0
6226     enable  "${lib}_deps_${dep}"
6227     prepend "${lib}_deps" $dep
6228 }
6229
6230 # merge deps lib components
6231 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6232 merge_deps() {
6233     lib=$1
6234     shift
6235     for comp in $*; do
6236         enabled $comp || continue
6237         eval "dep=\"\$${comp}_deps\""
6238         for d in $dep; do
6239             add_dep $lib $d
6240         done
6241     done
6242 }
6243
6244 merge_deps libavfilter $FILTER_LIST
6245
6246 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6247
6248 for thread in $THREADS_LIST; do
6249     if enabled $thread; then
6250         test -n "$thread_type" &&
6251             die "ERROR: Only one thread type must be selected." ||
6252             thread_type="$thread"
6253     fi
6254 done
6255
6256 enabled zlib && add_cppflags -DZLIB_CONST
6257
6258 # conditional library dependencies, in linking order
6259 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6260 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6261 enabled aresample_filter    && prepend avfilter_deps "swresample"
6262 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6263 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6264 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6265 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6266 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6267 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6268 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6269 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6270 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6271 enabled pan_filter          && prepend avfilter_deps "swresample"
6272 enabled pp_filter           && prepend avfilter_deps "postproc"
6273 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6274 enabled resample_filter && prepend avfilter_deps "avresample"
6275 enabled sab_filter          && prepend avfilter_deps "swscale"
6276 enabled scale_filter    && prepend avfilter_deps "swscale"
6277 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6278 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6279 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6280 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6281 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6282 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6283 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6284 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6285 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6286
6287 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6288
6289 enabled opus_decoder    && prepend avcodec_deps "swresample"
6290
6291 expand_deps(){
6292     lib_deps=${1}_deps
6293     eval "deps=\$$lib_deps"
6294     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6295     unique $lib_deps
6296 }
6297
6298 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6299 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6300
6301 map 'expand_deps $v' $LIBRARY_LIST
6302
6303 echo "install prefix            $prefix"
6304 echo "source path               $source_path"
6305 echo "C compiler                $cc"
6306 echo "C library                 $libc_type"
6307 if test "$host_cc" != "$cc"; then
6308     echo "host C compiler           $host_cc"
6309     echo "host C library            $host_libc_type"
6310 fi
6311 echo "ARCH                      $arch ($cpu)"
6312 if test "$build_suffix" != ""; then
6313     echo "build suffix              $build_suffix"
6314 fi
6315 if test "$progs_suffix" != ""; then
6316     echo "progs suffix              $progs_suffix"
6317 fi
6318 if test "$extra_version" != ""; then
6319     echo "version string suffix     $extra_version"
6320 fi
6321 echo "big-endian                ${bigendian-no}"
6322 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6323 if enabled x86; then
6324     echo "${yasmexe}                      ${yasm-no}"
6325     echo "MMX enabled               ${mmx-no}"
6326     echo "MMXEXT enabled            ${mmxext-no}"
6327     echo "3DNow! enabled            ${amd3dnow-no}"
6328     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6329     echo "SSE enabled               ${sse-no}"
6330     echo "SSSE3 enabled             ${ssse3-no}"
6331     echo "AESNI enabled             ${aesni-no}"
6332     echo "AVX enabled               ${avx-no}"
6333     echo "XOP enabled               ${xop-no}"
6334     echo "FMA3 enabled              ${fma3-no}"
6335     echo "FMA4 enabled              ${fma4-no}"
6336     echo "i686 features enabled     ${i686-no}"
6337     echo "CMOV is fast              ${fast_cmov-no}"
6338     echo "EBX available             ${ebx_available-no}"
6339     echo "EBP available             ${ebp_available-no}"
6340 fi
6341 if enabled aarch64; then
6342     echo "NEON enabled              ${neon-no}"
6343     echo "VFP enabled               ${vfp-no}"
6344 fi
6345 if enabled arm; then
6346     echo "ARMv5TE enabled           ${armv5te-no}"
6347     echo "ARMv6 enabled             ${armv6-no}"
6348     echo "ARMv6T2 enabled           ${armv6t2-no}"
6349     echo "VFP enabled               ${vfp-no}"
6350     echo "NEON enabled              ${neon-no}"
6351     echo "THUMB enabled             ${thumb-no}"
6352 fi
6353 if enabled mips; then
6354     echo "MIPS FPU enabled          ${mipsfpu-no}"
6355     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6356     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6357     echo "MIPS MSA enabled          ${msa-no}"
6358     echo "LOONGSON MMI enabled      ${mmi-no}"
6359 fi
6360 if enabled ppc; then
6361     echo "AltiVec enabled           ${altivec-no}"
6362     echo "VSX enabled               ${vsx-no}"
6363     echo "POWER8 enabled            ${power8-no}"
6364     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6365     echo "dcbzl available           ${dcbzl-no}"
6366 fi
6367 echo "debug symbols             ${debug-no}"
6368 echo "strip symbols             ${stripping-no}"
6369 echo "optimize for size         ${small-no}"
6370 echo "optimizations             ${optimizations-no}"
6371 echo "static                    ${static-no}"
6372 echo "shared                    ${shared-no}"
6373 echo "postprocessing support    ${postproc-no}"
6374 echo "new filter support        ${avfilter-no}"
6375 echo "network support           ${network-no}"
6376 echo "threading support         ${thread_type-no}"
6377 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6378 echo "SDL support               ${sdl-no}"
6379 echo "opencl enabled            ${opencl-no}"
6380 echo "JNI support               ${jni-no}"
6381 echo "texi2html enabled         ${texi2html-no}"
6382 echo "perl enabled              ${perl-no}"
6383 echo "pod2man enabled           ${pod2man-no}"
6384 echo "makeinfo enabled          ${makeinfo-no}"
6385 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6386 test -n "$random_seed" &&
6387     echo "random seed               ${random_seed}"
6388 echo
6389
6390 echo "Enabled programs:"
6391 print_enabled '' $PROGRAM_LIST | print_in_columns
6392 echo
6393
6394 echo "External libraries:"
6395 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6396 echo
6397
6398 echo "Libraries:"
6399 print_enabled '' $LIBRARY_LIST | print_in_columns
6400 echo
6401
6402 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6403     echo "Enabled ${type}s:"
6404     eval list=\$$(toupper $type)_LIST
6405     print_enabled '_*' $list | print_in_columns
6406     echo
6407 done
6408
6409 echo "Enabled Hardware-accelerated codecs:"
6410 print_enabled '' $HW_CODECS_LIST | print_in_columns
6411 echo
6412
6413 license="LGPL version 2.1 or later"
6414 if enabled nonfree; then
6415     license="nonfree and unredistributable"
6416 elif enabled gplv3; then
6417     license="GPL version 3 or later"
6418 elif enabled lgplv3; then
6419     license="LGPL version 3 or later"
6420 elif enabled gpl; then
6421     license="GPL version 2 or later"
6422 fi
6423
6424 echo "License: $license"
6425
6426 echo "Creating config.mak, config.h, and doc/config.texi..."
6427
6428 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6429
6430 enabled stripping || strip="echo skipping strip"
6431
6432 config_files="$TMPH config.mak doc/config.texi"
6433
6434 cat > config.mak <<EOF
6435 # Automatically generated by configure - do not modify!
6436 ifndef FFMPEG_CONFIG_MAK
6437 FFMPEG_CONFIG_MAK=1
6438 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6439 prefix=$prefix
6440 LIBDIR=\$(DESTDIR)$libdir
6441 SHLIBDIR=\$(DESTDIR)$shlibdir
6442 INCDIR=\$(DESTDIR)$incdir
6443 BINDIR=\$(DESTDIR)$bindir
6444 DATADIR=\$(DESTDIR)$datadir
6445 DOCDIR=\$(DESTDIR)$docdir
6446 MANDIR=\$(DESTDIR)$mandir
6447 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6448 INSTALL_NAME_DIR=$install_name_dir
6449 SRC_PATH=$source_path
6450 SRC_LINK=$source_link
6451 ifndef MAIN_MAKEFILE
6452 SRC_PATH:=\$(SRC_PATH:.%=..%)
6453 endif
6454 CC_IDENT=$cc_ident
6455 ARCH=$arch
6456 INTRINSICS=$intrinsics
6457 CC=$cc
6458 CXX=$cxx
6459 AS=$as
6460 OBJCC=$objcc
6461 LD=$ld
6462 DEPCC=$dep_cc
6463 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6464 DEPAS=$as
6465 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6466 YASM=$yasmexe
6467 DEPYASM=$yasmexe
6468 AR=$ar
6469 ARFLAGS=$arflags
6470 AR_O=$ar_o
6471 RANLIB=$ranlib
6472 STRIP=$strip
6473 CP=cp -p
6474 LN_S=$ln_s
6475 CPPFLAGS=$CPPFLAGS
6476 CFLAGS=$CFLAGS
6477 CXXFLAGS=$CXXFLAGS
6478 OBJCFLAGS=$OBJCFLAGS
6479 ASFLAGS=$ASFLAGS
6480 AS_C=$AS_C
6481 AS_O=$AS_O
6482 OBJCC_C=$OBJCC_C
6483 OBJCC_E=$OBJCC_E
6484 OBJCC_O=$OBJCC_O
6485 CC_C=$CC_C
6486 CC_E=$CC_E
6487 CC_O=$CC_O
6488 CXX_C=$CXX_C
6489 CXX_O=$CXX_O
6490 LD_O=$LD_O
6491 LD_LIB=$LD_LIB
6492 LD_PATH=$LD_PATH
6493 DLLTOOL=$dlltool
6494 WINDRES=$windres
6495 DEPWINDRES=$dep_cc
6496 DOXYGEN=$doxygen
6497 LDFLAGS=$LDFLAGS
6498 LDEXEFLAGS=$LDEXEFLAGS
6499 LDLIBFLAGS=$LDLIBFLAGS
6500 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6501 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6502 YASMFLAGS=$YASMFLAGS
6503 BUILDSUF=$build_suffix
6504 PROGSSUF=$progs_suffix
6505 FULLNAME=$FULLNAME
6506 LIBPREF=$LIBPREF
6507 LIBSUF=$LIBSUF
6508 LIBNAME=$LIBNAME
6509 SLIBPREF=$SLIBPREF
6510 SLIBSUF=$SLIBSUF
6511 EXESUF=$EXESUF
6512 EXTRA_VERSION=$extra_version
6513 CCDEP=$CCDEP
6514 CXXDEP=$CXXDEP
6515 CCDEP_FLAGS=$CCDEP_FLAGS
6516 ASDEP=$ASDEP
6517 ASDEP_FLAGS=$ASDEP_FLAGS
6518 CC_DEPFLAGS=$CC_DEPFLAGS
6519 AS_DEPFLAGS=$AS_DEPFLAGS
6520 HOSTCC=$host_cc
6521 HOSTLD=$host_ld
6522 HOSTCFLAGS=$host_cflags
6523 HOSTCPPFLAGS=$host_cppflags
6524 HOSTEXESUF=$HOSTEXESUF
6525 HOSTLDFLAGS=$host_ldflags
6526 HOSTLIBS=$host_libs
6527 DEPHOSTCC=$host_cc
6528 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6529 HOSTCCDEP=$HOSTCCDEP
6530 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6531 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6532 HOSTCC_C=$HOSTCC_C
6533 HOSTCC_O=$HOSTCC_O
6534 HOSTLD_O=$HOSTLD_O
6535 TARGET_EXEC=$target_exec $target_exec_args
6536 TARGET_PATH=$target_path
6537 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6538 CFLAGS-ffplay=$sdl_cflags
6539 ZLIB=$($ldflags_filter -lz)
6540 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6541 EXTRALIBS=$extralibs
6542 COMPAT_OBJS=$compat_objs
6543 EXEOBJS=$exeobjs
6544 INSTALL=$install
6545 LIBTARGET=${LIBTARGET}
6546 SLIBNAME=${SLIBNAME}
6547 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6548 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6549 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6550 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6551 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6552 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6553 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6554 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6555 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6556 NOREDZONE_FLAGS=$noredzone_flags
6557 EOF
6558
6559 get_version(){
6560     lcname=lib${1}
6561     name=$(toupper $lcname)
6562     file=$source_path/$lcname/version.h
6563     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6564     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6565     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6566     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6567     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6568     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6569 }
6570
6571 map 'get_version $v' $LIBRARY_LIST
6572
6573 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6574
6575 print_program_libs(){
6576     eval "program_libs=\$${1}_libs"
6577     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6578 }
6579
6580 map 'print_program_libs $v' $PROGRAM_LIST
6581
6582 cat > $TMPH <<EOF
6583 /* Automatically generated by configure - do not modify! */
6584 #ifndef FFMPEG_CONFIG_H
6585 #define FFMPEG_CONFIG_H
6586 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6587 #define FFMPEG_LICENSE "$(c_escape $license)"
6588 #define CONFIG_THIS_YEAR 2016
6589 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6590 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6591 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6592 #define av_restrict $_restrict
6593 #define EXTERN_PREFIX "${extern_prefix}"
6594 #define EXTERN_ASM ${extern_prefix}
6595 #define BUILDSUF "$build_suffix"
6596 #define SLIBSUF "$SLIBSUF"
6597 #define HAVE_MMX2 HAVE_MMXEXT
6598 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6599 EOF
6600
6601 test -n "$assert_level" &&
6602     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6603
6604 test -n "$malloc_prefix" &&
6605     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6606
6607 if enabled yasm; then
6608     append config_files $TMPASM
6609     printf '' >$TMPASM
6610 fi
6611
6612 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6613
6614
6615 mkdir -p doc
6616 mkdir -p tests
6617 mkdir -p tests/api
6618 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6619
6620 print_config ARCH_   "$config_files" $ARCH_LIST
6621 print_config HAVE_   "$config_files" $HAVE_LIST
6622 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6623                                      $CONFIG_EXTRA      \
6624                                      $ALL_COMPONENTS    \
6625
6626 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6627 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6628
6629 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6630 cp_if_changed $TMPH config.h
6631 touch .config
6632
6633 enabled yasm && cp_if_changed $TMPASM config.asm
6634
6635 cat > $TMPH <<EOF
6636 /* Generated by ffconf */
6637 #ifndef AVUTIL_AVCONFIG_H
6638 #define AVUTIL_AVCONFIG_H
6639 EOF
6640
6641 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6642
6643 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6644
6645 cp_if_changed $TMPH libavutil/avconfig.h
6646
6647 if test -n "$WARNINGS"; then
6648     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6649     enabled fatal_warnings && exit 1
6650 fi
6651
6652 # generate the lists of enabled components
6653 print_enabled_components(){
6654     file=$1
6655     struct_name=$2
6656     name=$3
6657     shift 3
6658     echo "static const $struct_name *$name[] = {" > $TMPH
6659     for c in $*; do
6660         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6661     done
6662     echo "    NULL };" >> $TMPH
6663     cp_if_changed $TMPH $file
6664 }
6665
6666 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6667 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6668
6669 # build pkg-config files
6670
6671 lib_version(){
6672     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6673 }
6674
6675 pkgconfig_generate(){
6676     name=$1
6677     shortname=${name#lib}${build_suffix}
6678     comment=$2
6679     version=$3
6680     libs=$4
6681     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6682     requires=${requires%, }
6683     enabled ${name#lib} || return 0
6684     mkdir -p $name
6685     cat <<EOF > $name/$name${build_suffix}.pc
6686 prefix=$prefix
6687 exec_prefix=\${prefix}
6688 libdir=$libdir
6689 includedir=$incdir
6690
6691 Name: $name
6692 Description: $comment
6693 Version: $version
6694 Requires: $(enabled shared || echo $requires)
6695 Requires.private: $(enabled shared && echo $requires)
6696 Conflicts:
6697 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6698 Libs.private: $(enabled shared && echo $libs)
6699 Cflags: -I\${includedir}
6700 EOF
6701
6702 mkdir -p doc/examples/pc-uninstalled
6703 includedir=${source_path}
6704 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6705     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6706 prefix=
6707 exec_prefix=
6708 libdir=\${pcfiledir}/../../../$name
6709 includedir=${includedir}
6710
6711 Name: $name
6712 Description: $comment
6713 Version: $version
6714 Requires: $requires
6715 Conflicts:
6716 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6717 Cflags: -I\${includedir}
6718 EOF
6719 }
6720
6721 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6722 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6723 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6724 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6725 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6726 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6727 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6728 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6729 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"