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 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2391 metasound_decoder_select="lsp mdct sinewin"
2392 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2393 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2394 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2395 mjpegb_decoder_select="mjpeg_decoder"
2396 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2397 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2398 mlp_decoder_select="mlp_parser"
2399 motionpixels_decoder_select="bswapdsp"
2400 mp1_decoder_select="mpegaudio"
2401 mp1float_decoder_select="mpegaudio"
2402 mp2_decoder_select="mpegaudio"
2403 mp2float_decoder_select="mpegaudio"
2404 mp3_decoder_select="mpegaudio"
2405 mp3adu_decoder_select="mpegaudio"
2406 mp3adufloat_decoder_select="mpegaudio"
2407 mp3float_decoder_select="mpegaudio"
2408 mp3on4_decoder_select="mpegaudio"
2409 mp3on4float_decoder_select="mpegaudio"
2410 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2411 mpc8_decoder_select="mpegaudiodsp"
2412 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2413 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2414 mpegvideo_decoder_select="mpegvideo"
2415 mpeg1video_decoder_select="mpegvideo"
2416 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2417 mpeg2video_decoder_select="mpegvideo"
2418 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2419 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2420 mpeg4_encoder_select="h263_encoder"
2421 msa1_decoder_select="mss34dsp"
2422 msmpeg4v1_decoder_select="h263_decoder"
2423 msmpeg4v2_decoder_select="h263_decoder"
2424 msmpeg4v2_encoder_select="h263_encoder"
2425 msmpeg4v3_decoder_select="h263_decoder"
2426 msmpeg4v3_encoder_select="h263_encoder"
2427 mss2_decoder_select="vc1_decoder mpegvideo"
2428 mts2_decoder_select="mss34dsp"
2429 mxpeg_decoder_select="mjpeg_decoder"
2430 nellymoser_decoder_select="mdct sinewin"
2431 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2432 nuv_decoder_select="idctdsp lzo"
2433 on2avc_decoder_select="mdct"
2434 opus_decoder_deps="swresample"
2435 opus_decoder_select="imdct15"
2436 png_decoder_select="zlib"
2437 png_encoder_select="huffyuvencdsp zlib"
2438 prores_decoder_select="blockdsp idctdsp"
2439 prores_encoder_select="fdctdsp"
2440 qcelp_decoder_select="lsp"
2441 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2442 ra_144_decoder_select="audiodsp"
2443 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2444 ralf_decoder_select="golomb"
2445 rawvideo_decoder_select="bswapdsp"
2446 rscc_decoder_select="zlib"
2447 rtjpeg_decoder_select="me_cmp"
2448 rv10_decoder_select="h263_decoder"
2449 rv10_encoder_select="h263_encoder"
2450 rv20_decoder_select="h263_decoder"
2451 rv20_encoder_select="h263_encoder"
2452 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2453 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2454 screenpresso_decoder_select="zlib"
2455 shorten_decoder_select="golomb"
2456 sipr_decoder_select="lsp"
2457 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2458 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2459 sonic_decoder_select="golomb rangecoder"
2460 sonic_encoder_select="golomb rangecoder"
2461 sonic_ls_encoder_select="golomb rangecoder"
2462 sp5x_decoder_select="mjpeg_decoder"
2463 svq1_decoder_select="hpeldsp"
2464 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2465 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2466 svq3_decoder_suggest="zlib"
2467 tak_decoder_select="audiodsp"
2468 tdsc_decoder_select="zlib mjpeg_decoder"
2469 theora_decoder_select="vp3_decoder"
2470 thp_decoder_select="mjpeg_decoder"
2471 tiff_decoder_suggest="zlib lzma"
2472 tiff_encoder_suggest="zlib"
2473 truehd_decoder_select="mlp_parser"
2474 truemotion2_decoder_select="bswapdsp"
2475 truespeech_decoder_select="bswapdsp"
2476 tscc_decoder_select="zlib"
2477 twinvq_decoder_select="mdct lsp sinewin"
2478 txd_decoder_select="texturedsp"
2479 utvideo_decoder_select="bswapdsp"
2480 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2481 vble_decoder_select="huffyuvdsp"
2482 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2483 vc1_qsv_decoder_deps="libmfx"
2484 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2485 vc1image_decoder_select="vc1_decoder"
2486 vorbis_decoder_select="mdct"
2487 vorbis_encoder_select="mdct"
2488 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2489 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2490 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2491 vp6a_decoder_select="vp6_decoder"
2492 vp6f_decoder_select="vp6_decoder"
2493 vp7_decoder_select="h264pred videodsp vp8dsp"
2494 vp8_decoder_select="h264pred videodsp vp8dsp"
2495 vp9_decoder_select="videodsp vp9_parser"
2496 webp_decoder_select="vp8_decoder exif"
2497 wmalossless_decoder_select="llauddsp"
2498 wmapro_decoder_select="mdct sinewin wma_freqs"
2499 wmav1_decoder_select="mdct sinewin wma_freqs"
2500 wmav1_encoder_select="mdct sinewin wma_freqs"
2501 wmav2_decoder_select="mdct sinewin wma_freqs"
2502 wmav2_encoder_select="mdct sinewin wma_freqs"
2503 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2504 wmv1_decoder_select="h263_decoder"
2505 wmv1_encoder_select="h263_encoder"
2506 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2507 wmv2_encoder_select="h263_encoder wmv2dsp"
2508 wmv3_decoder_select="vc1_decoder"
2509 wmv3image_decoder_select="wmv3_decoder"
2510 xma1_decoder_select="wmapro_decoder"
2511 xma2_decoder_select="wmapro_decoder"
2512 zerocodec_decoder_select="zlib"
2513 zlib_decoder_select="zlib"
2514 zlib_encoder_select="zlib"
2515 zmbv_decoder_select="zlib"
2516 zmbv_encoder_select="zlib"
2517
2518 # platform codecs
2519 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2520 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2521
2522 # hardware accelerators
2523 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2524 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2525 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2526 vaapi_deps="va_va_h"
2527 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2528 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2529 vda_deps="vda_framework pthreads"
2530 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2531 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2532 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2533 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2534 xvmc_deps="X11_extensions_XvMClib_h"
2535
2536 h263_vaapi_hwaccel_deps="vaapi"
2537 h263_vaapi_hwaccel_select="h263_decoder"
2538 h263_videotoolbox_hwaccel_deps="videotoolbox"
2539 h263_videotoolbox_hwaccel_select="h263_decoder"
2540 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2541 h264_d3d11va_hwaccel_deps="d3d11va"
2542 h264_d3d11va_hwaccel_select="h264_decoder"
2543 h264_dxva2_hwaccel_deps="dxva2"
2544 h264_dxva2_hwaccel_select="h264_decoder"
2545 h264_mediacodec_decoder_deps="mediacodec"
2546 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2547 h264_mmal_decoder_deps="mmal"
2548 h264_mmal_decoder_select="mmal"
2549 h264_mmal_hwaccel_deps="mmal"
2550 h264_omx_encoder_deps="omx"
2551 h264_qsv_hwaccel_deps="libmfx"
2552 h264_vaapi_hwaccel_deps="vaapi"
2553 h264_vaapi_hwaccel_select="h264_decoder"
2554 h264_vda_decoder_deps="vda"
2555 h264_vda_decoder_select="h264_decoder"
2556 h264_vda_hwaccel_deps="vda"
2557 h264_vda_hwaccel_select="h264_decoder"
2558 h264_vda_old_hwaccel_deps="vda"
2559 h264_vda_old_hwaccel_select="h264_decoder"
2560 h264_vdpau_decoder_deps="vdpau"
2561 h264_vdpau_decoder_select="h264_decoder"
2562 h264_vdpau_hwaccel_deps="vdpau"
2563 h264_vdpau_hwaccel_select="h264_decoder"
2564 h264_videotoolbox_hwaccel_deps="videotoolbox"
2565 h264_videotoolbox_hwaccel_select="h264_decoder"
2566 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2567 hevc_d3d11va_hwaccel_select="hevc_decoder"
2568 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2569 hevc_dxva2_hwaccel_select="hevc_decoder"
2570 hevc_qsv_hwaccel_deps="libmfx"
2571 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2572 hevc_vaapi_hwaccel_select="hevc_decoder"
2573 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2574 hevc_vdpau_hwaccel_select="hevc_decoder"
2575 mpeg_vdpau_decoder_deps="vdpau"
2576 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2577 mpeg_xvmc_hwaccel_deps="xvmc"
2578 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2579 mpeg1_vdpau_decoder_deps="vdpau"
2580 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2581 mpeg1_vdpau_hwaccel_deps="vdpau"
2582 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2583 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2584 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2585 mpeg1_xvmc_hwaccel_deps="xvmc"
2586 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2587 mpeg2_crystalhd_decoder_select="crystalhd"
2588 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2589 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2590 mpeg2_dxva2_hwaccel_deps="dxva2"
2591 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2592 mpeg2_mmal_decoder_deps="mmal"
2593 mpeg2_mmal_decoder_select="mmal"
2594 mpeg2_mmal_hwaccel_deps="mmal"
2595 mpeg2_qsv_hwaccel_deps="libmfx"
2596 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2597 mpeg2_vaapi_hwaccel_deps="vaapi"
2598 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2599 mpeg2_vdpau_hwaccel_deps="vdpau"
2600 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2601 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2602 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2603 mpeg2_xvmc_hwaccel_deps="xvmc"
2604 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2605 mpeg4_crystalhd_decoder_select="crystalhd"
2606 mpeg4_mmal_decoder_deps="mmal"
2607 mpeg4_mmal_decoder_select="mmal"
2608 mpeg4_mmal_hwaccel_deps="mmal"
2609 mpeg4_omx_encoder_deps="omx"
2610 mpeg4_vaapi_hwaccel_deps="vaapi"
2611 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2612 mpeg4_vdpau_decoder_deps="vdpau"
2613 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2614 mpeg4_vdpau_hwaccel_deps="vdpau"
2615 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2616 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2617 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2618 msmpeg4_crystalhd_decoder_select="crystalhd"
2619 vc1_crystalhd_decoder_select="crystalhd"
2620 vc1_d3d11va_hwaccel_deps="d3d11va"
2621 vc1_d3d11va_hwaccel_select="vc1_decoder"
2622 vc1_dxva2_hwaccel_deps="dxva2"
2623 vc1_dxva2_hwaccel_select="vc1_decoder"
2624 vc1_mmal_decoder_deps="mmal"
2625 vc1_mmal_decoder_select="mmal"
2626 vc1_mmal_hwaccel_deps="mmal"
2627 vc1_qsv_hwaccel_deps="libmfx"
2628 vc1_qsv_hwaccel_select="qsvdec_vc1"
2629 vc1_vaapi_hwaccel_deps="vaapi"
2630 vc1_vaapi_hwaccel_select="vc1_decoder"
2631 vc1_vdpau_decoder_deps="vdpau"
2632 vc1_vdpau_decoder_select="vc1_decoder"
2633 vc1_vdpau_hwaccel_deps="vdpau"
2634 vc1_vdpau_hwaccel_select="vc1_decoder"
2635 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2636 vp9_d3d11va_hwaccel_select="vp9_decoder"
2637 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2638 vp9_dxva2_hwaccel_select="vp9_decoder"
2639 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2640 vp9_vaapi_hwaccel_select="vp9_decoder"
2641 wmv3_crystalhd_decoder_select="crystalhd"
2642 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2643 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2644 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2645 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2646 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2647
2648 # hardware-accelerated codecs
2649 omx_deps="dlopen pthreads"
2650 omx_extralibs='$ldl'
2651 qsvdec_select="qsv"
2652 qsvenc_select="qsv"
2653 vaapi_encode_deps="vaapi"
2654
2655 hwupload_cuda_filter_deps="cuda"
2656 scale_npp_filter_deps="cuda libnpp"
2657
2658 nvenc_encoder_deps="nvenc"
2659 h264_qsv_decoder_deps="libmfx"
2660 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2661 h264_qsv_encoder_deps="libmfx"
2662 h264_qsv_encoder_select="qsvenc"
2663 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2664 h264_vaapi_encoder_select="vaapi_encode golomb"
2665
2666 hevc_qsv_decoder_deps="libmfx"
2667 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2668 hevc_qsv_encoder_deps="libmfx"
2669 hevc_qsv_encoder_select="qsvenc"
2670 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2671 hevc_vaapi_encoder_select="vaapi_encode golomb"
2672 mpeg2_qsv_decoder_deps="libmfx"
2673 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2674 mpeg2_qsv_encoder_deps="libmfx"
2675 mpeg2_qsv_encoder_select="qsvenc"
2676 nvenc_h264_encoder_deps="nvenc"
2677 nvenc_hevc_encoder_deps="nvenc"
2678
2679 # parsers
2680 h264_parser_select="h264_decoder"
2681 hevc_parser_select="golomb"
2682 mpegvideo_parser_select="mpegvideo"
2683 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2684 vc1_parser_select="vc1dsp"
2685
2686 # bitstream_filters
2687 mjpeg2jpeg_bsf_select="jpegtables"
2688
2689 # external libraries
2690 aac_at_decoder_deps="audiotoolbox"
2691 ac3_at_decoder_deps="audiotoolbox"
2692 ac3_at_decoder_select="ac3_parser"
2693 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2694 alac_at_decoder_deps="audiotoolbox"
2695 amr_nb_at_decoder_deps="audiotoolbox"
2696 eac3_at_decoder_deps="audiotoolbox"
2697 eac3_at_decoder_select="ac3_parser"
2698 gsm_ms_at_decoder_deps="audiotoolbox"
2699 ilbc_at_decoder_deps="audiotoolbox"
2700 mp1_at_decoder_deps="audiotoolbox"
2701 mp2_at_decoder_deps="audiotoolbox"
2702 mp3_at_decoder_deps="audiotoolbox"
2703 pcm_alaw_at_decoder_deps="audiotoolbox"
2704 pcm_mulaw_at_decoder_deps="audiotoolbox"
2705 qdmc_at_decoder_deps="audiotoolbox"
2706 qdm2_at_decoder_deps="audiotoolbox"
2707 aac_at_encoder_deps="audiotoolbox"
2708 aac_at_encoder_select="audio_frame_queue"
2709 alac_at_encoder_deps="audiotoolbox"
2710 alac_at_encoder_select="audio_frame_queue"
2711 ilbc_at_encoder_deps="audiotoolbox"
2712 ilbc_at_encoder_select="audio_frame_queue"
2713 pcm_alaw_at_encoder_deps="audiotoolbox"
2714 pcm_alaw_at_encoder_select="audio_frame_queue"
2715 pcm_mulaw_at_encoder_deps="audiotoolbox"
2716 pcm_mulaw_at_encoder_select="audio_frame_queue"
2717 chromaprint_muxer_deps="chromaprint"
2718 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2719 libcelt_decoder_deps="libcelt"
2720 libfaac_encoder_deps="libfaac"
2721 libfaac_encoder_select="audio_frame_queue"
2722 libfdk_aac_decoder_deps="libfdk_aac"
2723 libfdk_aac_encoder_deps="libfdk_aac"
2724 libfdk_aac_encoder_select="audio_frame_queue"
2725 libgme_demuxer_deps="libgme"
2726 libgsm_decoder_deps="libgsm"
2727 libgsm_encoder_deps="libgsm"
2728 libgsm_ms_decoder_deps="libgsm"
2729 libgsm_ms_encoder_deps="libgsm"
2730 libilbc_decoder_deps="libilbc"
2731 libilbc_encoder_deps="libilbc"
2732 libkvazaar_encoder_deps="libkvazaar"
2733 libmodplug_demuxer_deps="libmodplug"
2734 libmp3lame_encoder_deps="libmp3lame"
2735 libmp3lame_encoder_select="audio_frame_queue"
2736 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2737 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2738 libopencore_amrnb_encoder_select="audio_frame_queue"
2739 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2740 libopenh264_encoder_deps="libopenh264"
2741 libopenjpeg_decoder_deps="libopenjpeg"
2742 libopenjpeg_encoder_deps="libopenjpeg"
2743 libopus_decoder_deps="libopus"
2744 libopus_encoder_deps="libopus"
2745 libopus_encoder_select="audio_frame_queue"
2746 libschroedinger_decoder_deps="libschroedinger"
2747 libschroedinger_encoder_deps="libschroedinger"
2748 libshine_encoder_deps="libshine"
2749 libshine_encoder_select="audio_frame_queue"
2750 libspeex_decoder_deps="libspeex"
2751 libspeex_encoder_deps="libspeex"
2752 libspeex_encoder_select="audio_frame_queue"
2753 libtheora_encoder_deps="libtheora"
2754 libtwolame_encoder_deps="libtwolame"
2755 libutvideo_decoder_deps="libutvideo"
2756 libutvideo_encoder_deps="libutvideo"
2757 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2758 libvorbis_decoder_deps="libvorbis"
2759 libvorbis_encoder_deps="libvorbis"
2760 libvorbis_encoder_select="audio_frame_queue"
2761 libvpx_vp8_decoder_deps="libvpx"
2762 libvpx_vp8_encoder_deps="libvpx"
2763 libvpx_vp9_decoder_deps="libvpx"
2764 libvpx_vp9_encoder_deps="libvpx"
2765 libwavpack_encoder_deps="libwavpack"
2766 libwebp_encoder_deps="libwebp"
2767 libwebp_anim_encoder_deps="libwebp"
2768 libx262_encoder_deps="libx262"
2769 libx264_encoder_deps="libx264"
2770 libx264rgb_encoder_deps="libx264"
2771 libx264rgb_encoder_select="libx264_encoder"
2772 libx265_encoder_deps="libx265"
2773 libxavs_encoder_deps="libxavs"
2774 libxvid_encoder_deps="libxvid"
2775 libzvbi_teletext_decoder_deps="libzvbi"
2776 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2777 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2778 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2779 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2780 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2781
2782 # demuxers / muxers
2783 ac3_demuxer_select="ac3_parser"
2784 asf_demuxer_select="riffdec"
2785 asf_o_demuxer_select="riffdec"
2786 asf_muxer_select="riffenc"
2787 asf_stream_muxer_select="asf_muxer"
2788 avi_demuxer_select="iso_media riffdec exif"
2789 avi_muxer_select="riffenc"
2790 avisynth_demuxer_deps="avisynth"
2791 avisynth_demuxer_select="riffdec"
2792 caf_demuxer_select="iso_media riffdec"
2793 dash_muxer_select="mp4_muxer"
2794 dirac_demuxer_select="dirac_parser"
2795 dts_demuxer_select="dca_parser"
2796 dtshd_demuxer_select="dca_parser"
2797 dv_demuxer_select="dvprofile"
2798 dv_muxer_select="dvprofile"
2799 dxa_demuxer_select="riffdec"
2800 eac3_demuxer_select="ac3_parser"
2801 f4v_muxer_select="mov_muxer"
2802 flac_demuxer_select="flac_parser"
2803 hds_muxer_select="flv_muxer"
2804 hls_muxer_select="mpegts_muxer"
2805 image2_alias_pix_demuxer_select="image2_demuxer"
2806 image2_brender_pix_demuxer_select="image2_demuxer"
2807 ipod_muxer_select="mov_muxer"
2808 ismv_muxer_select="mov_muxer"
2809 libnut_demuxer_deps="libnut"
2810 libnut_muxer_deps="libnut"
2811 matroska_audio_muxer_select="matroska_muxer"
2812 matroska_demuxer_select="iso_media riffdec"
2813 matroska_demuxer_suggest="bzlib lzo zlib"
2814 matroska_muxer_select="iso_media riffenc"
2815 mmf_muxer_select="riffenc"
2816 mov_demuxer_select="iso_media riffdec"
2817 mov_demuxer_suggest="zlib"
2818 mov_muxer_select="iso_media riffenc rtpenc_chain"
2819 mp3_demuxer_select="mpegaudio_parser"
2820 mp4_muxer_select="mov_muxer"
2821 mpegts_demuxer_select="iso_media"
2822 mpegts_muxer_select="adts_muxer latm_muxer"
2823 mpegtsraw_demuxer_select="mpegts_demuxer"
2824 mxf_d10_muxer_select="mxf_muxer"
2825 mxf_opatom_muxer_select="mxf_muxer"
2826 nut_muxer_select="riffenc"
2827 nuv_demuxer_select="riffdec"
2828 oga_muxer_select="ogg_muxer"
2829 ogg_demuxer_select="dirac_parse"
2830 opus_muxer_select="ogg_muxer"
2831 psp_muxer_select="mov_muxer"
2832 rtp_demuxer_select="sdp_demuxer"
2833 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2834 rtsp_demuxer_select="http_protocol rtpdec"
2835 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2836 sap_demuxer_select="sdp_demuxer"
2837 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2838 sdp_demuxer_select="rtpdec"
2839 smoothstreaming_muxer_select="ismv_muxer"
2840 spdif_muxer_select="aac_parser"
2841 spx_muxer_select="ogg_muxer"
2842 swf_demuxer_suggest="zlib"
2843 tak_demuxer_select="tak_parser"
2844 tg2_muxer_select="mov_muxer"
2845 tgp_muxer_select="mov_muxer"
2846 vobsub_demuxer_select="mpegps_demuxer"
2847 w64_demuxer_select="wav_demuxer"
2848 w64_muxer_select="wav_muxer"
2849 wav_demuxer_select="riffdec"
2850 wav_muxer_select="riffenc"
2851 webm_muxer_select="iso_media riffenc"
2852 webm_dash_manifest_demuxer_select="matroska_demuxer"
2853 wtv_demuxer_select="mpegts_demuxer riffdec"
2854 wtv_muxer_select="mpegts_muxer riffenc"
2855 xmv_demuxer_select="riffdec"
2856 xwma_demuxer_select="riffdec"
2857
2858 # indevs / outdevs
2859 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2860 alsa_outdev_deps="alsa_asoundlib_h"
2861 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2862 avfoundation_indev_select="avfoundation"
2863 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2864 caca_outdev_deps="libcaca"
2865 decklink_indev_deps="decklink pthreads"
2866 decklink_indev_extralibs="-lstdc++"
2867 decklink_outdev_deps="decklink pthreads"
2868 decklink_outdev_extralibs="-lstdc++"
2869 dshow_indev_deps="IBaseFilter"
2870 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2871 dv1394_indev_deps="dv1394"
2872 dv1394_indev_select="dv_demuxer"
2873 fbdev_indev_deps="linux_fb_h"
2874 fbdev_outdev_deps="linux_fb_h"
2875 gdigrab_indev_deps="CreateDIBSection"
2876 gdigrab_indev_extralibs="-lgdi32"
2877 gdigrab_indev_select="bmp_decoder"
2878 iec61883_indev_deps="libiec61883"
2879 jack_indev_deps="jack_jack_h"
2880 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2881 lavfi_indev_deps="avfilter"
2882 libcdio_indev_deps="libcdio"
2883 libdc1394_indev_deps="libdc1394"
2884 libv4l2_indev_deps="libv4l2"
2885 openal_indev_deps="openal"
2886 opengl_outdev_deps="opengl"
2887 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2888 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2889 pulse_indev_deps="libpulse"
2890 pulse_outdev_deps="libpulse"
2891 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2892 qtkit_indev_select="qtkit"
2893 sdl_outdev_deps="sdl"
2894 sndio_indev_deps="sndio_h"
2895 sndio_outdev_deps="sndio_h"
2896 v4l_indev_deps="linux_videodev_h"
2897 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2898 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2899 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2900 vfwcap_indev_extralibs="-lavicap32"
2901 x11grab_indev_deps="x11grab"
2902 x11grab_xcb_indev_deps="libxcb"
2903 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2904 xv_outdev_extralibs="-lXv -lX11 -lXext"
2905
2906 # protocols
2907 async_protocol_deps="threads"
2908 bluray_protocol_deps="libbluray"
2909 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2910 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2911 ffrtmpcrypt_protocol_select="tcp_protocol"
2912 ffrtmphttp_protocol_deps="!librtmp_protocol"
2913 ffrtmphttp_protocol_select="http_protocol"
2914 ftp_protocol_select="tcp_protocol"
2915 gopher_protocol_select="network"
2916 http_protocol_select="tcp_protocol"
2917 httpproxy_protocol_select="tcp_protocol"
2918 https_protocol_select="tls_protocol"
2919 icecast_protocol_select="http_protocol"
2920 librtmp_protocol_deps="librtmp"
2921 librtmpe_protocol_deps="librtmp"
2922 librtmps_protocol_deps="librtmp"
2923 librtmpt_protocol_deps="librtmp"
2924 librtmpte_protocol_deps="librtmp"
2925 libsmbclient_protocol_deps="libsmbclient gplv3"
2926 libssh_protocol_deps="libssh"
2927 mmsh_protocol_select="http_protocol"
2928 mmst_protocol_select="network"
2929 rtmp_protocol_deps="!librtmp_protocol"
2930 rtmp_protocol_select="tcp_protocol"
2931 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2932 rtmps_protocol_deps="!librtmp_protocol"
2933 rtmps_protocol_select="tls_protocol"
2934 rtmpt_protocol_select="ffrtmphttp_protocol"
2935 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2936 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2937 rtp_protocol_select="udp_protocol"
2938 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2939 sctp_protocol_select="network"
2940 srtp_protocol_select="rtp_protocol srtp"
2941 tcp_protocol_select="network"
2942 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2943 tls_gnutls_protocol_select="tcp_protocol"
2944 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2945 tls_openssl_protocol_select="tcp_protocol"
2946 tls_schannel_protocol_deps="schannel"
2947 tls_schannel_protocol_select="tcp_protocol"
2948 tls_securetransport_protocol_deps="securetransport"
2949 tls_securetransport_protocol_select="tcp_protocol"
2950 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2951 udp_protocol_select="network"
2952 udplite_protocol_select="network"
2953 unix_protocol_deps="sys_un_h"
2954 unix_protocol_select="network"
2955
2956 # filters
2957 afftfilt_filter_deps="avcodec"
2958 afftfilt_filter_select="fft"
2959 amovie_filter_deps="avcodec avformat"
2960 aresample_filter_deps="swresample"
2961 ass_filter_deps="libass"
2962 asyncts_filter_deps="avresample"
2963 atempo_filter_deps="avcodec"
2964 atempo_filter_select="rdft"
2965 azmq_filter_deps="libzmq"
2966 blackframe_filter_deps="gpl"
2967 boxblur_filter_deps="gpl"
2968 bs2b_filter_deps="libbs2b"
2969 colormatrix_filter_deps="gpl"
2970 cover_rect_filter_deps="avcodec avformat gpl"
2971 cropdetect_filter_deps="gpl"
2972 delogo_filter_deps="gpl"
2973 deshake_filter_select="pixelutils"
2974 drawtext_filter_deps="libfreetype"
2975 ebur128_filter_deps="gpl"
2976 eq_filter_deps="gpl"
2977 fftfilt_filter_deps="avcodec"
2978 fftfilt_filter_select="rdft"
2979 find_rect_filter_deps="avcodec avformat gpl"
2980 firequalizer_filter_deps="avcodec"
2981 firequalizer_filter_select="rdft"
2982 flite_filter_deps="libflite"
2983 framerate_filter_select="pixelutils"
2984 frei0r_filter_deps="frei0r dlopen"
2985 frei0r_src_filter_deps="frei0r dlopen"
2986 fspp_filter_deps="gpl"
2987 geq_filter_deps="gpl"
2988 histeq_filter_deps="gpl"
2989 hqdn3d_filter_deps="gpl"
2990 interlace_filter_deps="gpl"
2991 kerndeint_filter_deps="gpl"
2992 ladspa_filter_deps="ladspa dlopen"
2993 loudnorm_filter_deps="libebur128"
2994 mcdeint_filter_deps="avcodec gpl"
2995 movie_filter_deps="avcodec avformat"
2996 mpdecimate_filter_deps="gpl"
2997 mpdecimate_filter_select="pixelutils"
2998 mptestsrc_filter_deps="gpl"
2999 negate_filter_deps="lut_filter"
3000 nnedi_filter_deps="gpl"
3001 ocr_filter_deps="libtesseract"
3002 ocv_filter_deps="libopencv"
3003 owdenoise_filter_deps="gpl"
3004 pan_filter_deps="swresample"
3005 perspective_filter_deps="gpl"
3006 phase_filter_deps="gpl"
3007 pp7_filter_deps="gpl"
3008 pp_filter_deps="gpl postproc"
3009 pullup_filter_deps="gpl"
3010 removelogo_filter_deps="avcodec avformat swscale"
3011 repeatfields_filter_deps="gpl"
3012 resample_filter_deps="avresample"
3013 rubberband_filter_deps="librubberband"
3014 sab_filter_deps="gpl swscale"
3015 scale2ref_filter_deps="swscale"
3016 scale_filter_deps="swscale"
3017 select_filter_select="pixelutils"
3018 showcqt_filter_deps="avcodec avformat swscale"
3019 showcqt_filter_select="fft"
3020 showfreqs_filter_deps="avcodec"
3021 showfreqs_filter_select="fft"
3022 showspectrum_filter_deps="avcodec"
3023 showspectrum_filter_select="fft"
3024 showspectrumpic_filter_deps="avcodec"
3025 showspectrumpic_filter_select="fft"
3026 smartblur_filter_deps="gpl swscale"
3027 sofalizer_filter_deps="netcdf avcodec"
3028 sofalizer_filter_select="fft"
3029 spectrumsynth_filter_deps="avcodec"
3030 spectrumsynth_filter_select="fft"
3031 spp_filter_deps="gpl avcodec"
3032 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3033 stereo3d_filter_deps="gpl"
3034 subtitles_filter_deps="avformat avcodec libass"
3035 super2xsai_filter_deps="gpl"
3036 pixfmts_super2xsai_test_deps="super2xsai_filter"
3037 tinterlace_filter_deps="gpl"
3038 tinterlace_merge_test_deps="tinterlace_filter"
3039 tinterlace_pad_test_deps="tinterlace_filter"
3040 uspp_filter_deps="gpl avcodec"
3041 vidstabdetect_filter_deps="libvidstab"
3042 vidstabtransform_filter_deps="libvidstab"
3043 zmq_filter_deps="libzmq"
3044 zoompan_filter_deps="swscale"
3045 zscale_filter_deps="libzimg"
3046 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3047
3048 # examples
3049 avcodec_example_deps="avcodec avutil"
3050 avio_dir_cmd="avformat avutil"
3051 avio_reading="avformat avcodec avutil"
3052 decoding_encoding_example_deps="avcodec avformat avutil"
3053 demuxing_decoding_example_deps="avcodec avformat avutil"
3054 extract_mvs_example_deps="avcodec avformat avutil"
3055 filter_audio_example_deps="avfilter avutil"
3056 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3057 filtering_video_example_deps="avfilter avcodec avformat avutil"
3058 metadata_example_deps="avformat avutil"
3059 muxing_example_deps="avcodec avformat avutil swscale"
3060 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3061 remuxing_example_deps="avcodec avformat avutil"
3062 resampling_audio_example_deps="avutil swresample"
3063 scaling_video_example_deps="avutil swscale"
3064 transcode_aac_example_deps="avcodec avformat swresample"
3065 transcoding_example_deps="avfilter avcodec avformat avutil"
3066
3067 # libraries, in linking order
3068 avcodec_deps="avutil"
3069 avdevice_deps="avformat avcodec avutil"
3070 avfilter_deps="avutil"
3071 avformat_deps="avcodec avutil"
3072 avresample_deps="avutil"
3073 postproc_deps="avutil gpl"
3074 swresample_deps="avutil"
3075 swscale_deps="avutil"
3076
3077 # programs
3078 ffmpeg_deps="avcodec avfilter avformat swresample"
3079 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3080                null_filter
3081                setpts_filter trim_filter"
3082 ffplay_deps="avcodec avformat swscale swresample sdl"
3083 ffplay_libs='$sdl_libs'
3084 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3085 ffprobe_deps="avcodec avformat"
3086 ffserver_deps="avformat fork sarestart"
3087 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3088
3089 # documentation
3090 podpages_deps="perl"
3091 manpages_deps="perl pod2man"
3092 htmlpages_deps="perl"
3093 htmlpages_deps_any="makeinfo_html texi2html"
3094 txtpages_deps="perl makeinfo"
3095 doc_deps_any="manpages htmlpages podpages txtpages"
3096
3097 # default parameters
3098
3099 logfile="config.log"
3100
3101 # installation paths
3102 prefix_default="/usr/local"
3103 bindir_default='${prefix}/bin'
3104 datadir_default='${prefix}/share/ffmpeg'
3105 docdir_default='${prefix}/share/doc/ffmpeg'
3106 incdir_default='${prefix}/include'
3107 libdir_default='${prefix}/lib'
3108 mandir_default='${prefix}/share/man'
3109
3110 # toolchain
3111 ar_default="ar"
3112 cc_default="gcc"
3113 cxx_default="g++"
3114 host_cc_default="gcc"
3115 cp_f="cp -f"
3116 doxygen_default="doxygen"
3117 install="install"
3118 ln_s_default="ln -s -f"
3119 nm_default="nm -g"
3120 objformat="elf"
3121 pkg_config_default=pkg-config
3122 ranlib_default="ranlib"
3123 strip_default="strip"
3124 yasmexe_default="yasm"
3125 windres_default="windres"
3126
3127 # OS
3128 target_os_default=$(tolower $(uname -s))
3129 host_os=$target_os_default
3130
3131 # machine
3132 if test "$target_os_default" = aix; then
3133     arch_default=$(uname -p)
3134     strip_default="strip -X32_64"
3135 else
3136     arch_default=$(uname -m)
3137 fi
3138 cpu="generic"
3139 intrinsics="none"
3140
3141 # configurable options
3142 enable $PROGRAM_LIST
3143 enable $DOCUMENT_LIST
3144 enable $EXAMPLE_LIST
3145 enable $(filter_out avresample $LIBRARY_LIST)
3146 enable stripping
3147
3148 enable asm
3149 enable debug
3150 enable doc
3151 enable faan faandct faanidct
3152 enable optimizations
3153 enable runtime_cpudetect
3154 enable safe_bitstream_reader
3155 enable static
3156 enable swscale_alpha
3157 enable valgrind_backtrace
3158
3159 sws_max_filter_size_default=256
3160 set_default sws_max_filter_size
3161
3162 # Enable platform codecs by default.
3163 enable audiotoolbox
3164
3165 # Enable hwaccels by default.
3166 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3167 enable xlib
3168
3169 enable vda_framework videotoolbox videotoolbox_encoder
3170
3171 # build settings
3172 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3173 LIBPREF="lib"
3174 LIBSUF=".a"
3175 FULLNAME='$(NAME)$(BUILDSUF)'
3176 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3177 SLIBPREF="lib"
3178 SLIBSUF=".so"
3179 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3180 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3181 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3182 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3183 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3184 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3185
3186 asflags_filter=echo
3187 cflags_filter=echo
3188 ldflags_filter=echo
3189
3190 AS_C='-c'
3191 AS_O='-o $@'
3192 CC_C='-c'
3193 CC_E='-E -o $@'
3194 CC_O='-o $@'
3195 CXX_C='-c'
3196 CXX_O='-o $@'
3197 OBJCC_C='-c'
3198 OBJCC_E='-E -o $@'
3199 OBJCC_O='-o $@'
3200 LD_O='-o $@'
3201 LD_LIB='-l%'
3202 LD_PATH='-L'
3203 HOSTCC_C='-c'
3204 HOSTCC_E='-E -o $@'
3205 HOSTCC_O='-o $@'
3206 HOSTLD_O='-o $@'
3207
3208 host_libs='-lm'
3209 host_cflags_filter=echo
3210 host_ldflags_filter=echo
3211
3212 target_path='$(CURDIR)'
3213
3214 # since the object filename is not given with the -MM flag, the compiler
3215 # is only able to print the basename, and we must add the path ourselves
3216 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3217 DEPFLAGS='-MM'
3218
3219 # find source path
3220 if test -f configure; then
3221     source_path=.
3222 else
3223     source_path=$(cd $(dirname "$0"); pwd)
3224     case "$source_path" in
3225         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3226     esac
3227     test -e "$source_path/config.h" &&
3228         die "Out of tree builds are impossible with config.h in source dir."
3229 fi
3230
3231 for v in "$@"; do
3232     r=${v#*=}
3233     l=${v%"$r"}
3234     r=$(sh_quote "$r")
3235     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3236 done
3237
3238 find_things(){
3239     thing=$1
3240     pattern=$2
3241     file=$source_path/$3
3242     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3243 }
3244
3245 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3246 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3247 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3248 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3249 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3250 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3251 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3252 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3253 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3254
3255 find_things_extern(){
3256     thing=$1
3257     pattern=$2
3258     file=$source_path/$3
3259     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3260 }
3261
3262 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3263 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3264
3265 ALL_COMPONENTS="
3266     $BSF_LIST
3267     $DECODER_LIST
3268     $DEMUXER_LIST
3269     $ENCODER_LIST
3270     $FILTER_LIST
3271     $HWACCEL_LIST
3272     $INDEV_LIST
3273     $MUXER_LIST
3274     $OUTDEV_LIST
3275     $PARSER_LIST
3276     $PROTOCOL_LIST
3277 "
3278
3279 for n in $COMPONENT_LIST; do
3280     v=$(toupper ${n%s})_LIST
3281     eval enable \$$v
3282     eval ${n}_if_any="\$$v"
3283 done
3284
3285 enable $ARCH_EXT_LIST
3286
3287 die_unknown(){
3288     echo "Unknown option \"$1\"."
3289     echo "See $0 --help for available options."
3290     exit 1
3291 }
3292
3293 print_in_columns() {
3294     cols=$(expr $ncols / 24)
3295     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3296 }
3297
3298 show_list() {
3299     suffix=_$1
3300     shift
3301     echo $* | sed s/$suffix//g | print_in_columns
3302     exit 0
3303 }
3304
3305 rand_list(){
3306     IFS=', '
3307     set -- $*
3308     unset IFS
3309     for thing; do
3310         comp=${thing%:*}
3311         prob=${thing#$comp}
3312         prob=${prob#:}
3313         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3314         echo "prob ${prob:-0.5}"
3315         printf '%s\n' $comp
3316     done
3317 }
3318
3319 do_random(){
3320     action=$1
3321     shift
3322     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3323     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3324 }
3325
3326 for opt do
3327     optval="${opt#*=}"
3328     case "$opt" in
3329         --extra-ldflags=*)
3330             add_ldflags $optval
3331         ;;
3332         --extra-ldexeflags=*)
3333             add_ldexeflags $optval
3334         ;;
3335         --extra-ldlibflags=*)
3336             add_ldlibflags $optval
3337         ;;
3338         --extra-libs=*)
3339             add_extralibs $optval
3340         ;;
3341         --disable-devices)
3342             disable $INDEV_LIST $OUTDEV_LIST
3343         ;;
3344         --enable-debug=*)
3345             debuglevel="$optval"
3346         ;;
3347         --disable-programs)
3348             disable $PROGRAM_LIST
3349         ;;
3350         --disable-everything)
3351             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3352         ;;
3353         --disable-all)
3354             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3355             disable $LIBRARY_LIST $PROGRAM_LIST doc
3356             enable avutil
3357         ;;
3358         --enable-random|--disable-random)
3359             action=${opt%%-random}
3360             do_random ${action#--} $COMPONENT_LIST
3361         ;;
3362         --enable-random=*|--disable-random=*)
3363             action=${opt%%-random=*}
3364             do_random ${action#--} $optval
3365         ;;
3366         --enable-*=*|--disable-*=*)
3367             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3368             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3369             eval list=\$$(toupper $thing)_LIST
3370             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3371             list=$(filter "$name" $list)
3372             [ "$list" = "" ] && warn "Option $opt did not match anything"
3373             $action $list
3374         ;;
3375         --enable-?*|--disable-?*)
3376             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3377             if is_in $option $COMPONENT_LIST; then
3378                 test $action = disable && action=unset
3379                 eval $action \$$(toupper ${option%s})_LIST
3380             elif is_in $option $CMDLINE_SELECT; then
3381                 $action $option
3382             else
3383                 die_unknown $opt
3384             fi
3385         ;;
3386         --list-*)
3387             NAME="${opt#--list-}"
3388             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3389             NAME=${NAME%s}
3390             eval show_list $NAME \$$(toupper $NAME)_LIST
3391         ;;
3392         --help|-h) show_help
3393         ;;
3394         --fatal-warnings) enable fatal_warnings
3395         ;;
3396         *)
3397             optname="${opt%%=*}"
3398             optname="${optname#--}"
3399             optname=$(echo "$optname" | sed 's/-/_/g')
3400             if is_in $optname $CMDLINE_SET; then
3401                 eval $optname='$optval'
3402             elif is_in $optname $CMDLINE_APPEND; then
3403                 append $optname "$optval"
3404             else
3405                 die_unknown $opt
3406             fi
3407         ;;
3408     esac
3409 done
3410
3411 for e in $env; do
3412     eval "export $e"
3413 done
3414
3415 disabled logging && logfile=/dev/null
3416
3417 # Disable all the library-specific components if the library itself
3418 # is disabled, see AVCODEC_LIST and following _LIST variables.
3419
3420 disable_components(){
3421     disabled ${1} && disable $(
3422         eval components="\$$(toupper ${1})_COMPONENTS"
3423         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3424     )
3425 }
3426
3427 map 'disable_components $v' $LIBRARY_LIST
3428
3429 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3430 set >> $logfile
3431
3432 test -n "$valgrind" && toolchain="valgrind-memcheck"
3433
3434 case "$toolchain" in
3435     *-asan)
3436         cc_default="${toolchain%-asan}"
3437         add_cflags  -fsanitize=address
3438         add_ldflags -fsanitize=address
3439     ;;
3440     *-msan)
3441         cc_default="${toolchain%-msan}"
3442         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3443         add_ldflags -fsanitize=memory
3444     ;;
3445     *-tsan)
3446         cc_default="${toolchain%-tsan}"
3447         add_cflags  -fsanitize=thread -pie
3448         add_ldflags -fsanitize=thread -pie
3449         case "$toolchain" in
3450             gcc-tsan)
3451                 add_cflags  -fPIC
3452                 add_ldflags -fPIC
3453                 ;;
3454         esac
3455     ;;
3456     *-usan)
3457         cc_default="${toolchain%-usan}"
3458         add_cflags  -fsanitize=undefined
3459         add_ldflags -fsanitize=undefined
3460     ;;
3461     valgrind-*)
3462         target_exec_default="valgrind"
3463         case "$toolchain" in
3464             valgrind-massif)
3465                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3466                 ;;
3467             valgrind-memcheck)
3468                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3469                 ;;
3470         esac
3471     ;;
3472     msvc)
3473         # Check whether the current MSVC version needs the C99 converter.
3474         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3475         # support enough of C99 to build ffmpeg. Default to the new
3476         # behaviour if the regexp was unable to match anything, since this
3477         # successfully parses the version number of existing supported
3478         # versions that require the converter (MSVC 2010 and 2012).
3479         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3480         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3481             cc_default="cl"
3482         else
3483             cc_default="c99wrap cl"
3484         fi
3485         ld_default="$source_path/compat/windows/mslink"
3486         nm_default="dumpbin -symbols"
3487         ar_default="lib"
3488         case "$arch" in
3489         arm*)
3490             as_default="armasm"
3491             ;;
3492         esac
3493         target_os_default="win32"
3494         # Use a relative path for TMPDIR. This makes sure all the
3495         # ffconf temp files are written with a relative path, avoiding
3496         # issues with msys/win32 path conversion for MSVC parameters
3497         # such as -Fo<file> or -out:<file>.
3498         TMPDIR=.
3499     ;;
3500     icl)
3501         cc_default="icl"
3502         ld_default="xilink"
3503         nm_default="dumpbin -symbols"
3504         ar_default="xilib"
3505         target_os_default="win32"
3506         TMPDIR=.
3507     ;;
3508     gcov)
3509         add_cflags  -fprofile-arcs -ftest-coverage
3510         add_ldflags -fprofile-arcs -ftest-coverage
3511     ;;
3512     llvm-cov)
3513         add_cflags -fprofile-arcs -ftest-coverage
3514         add_ldflags --coverage
3515     ;;
3516     hardened)
3517         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3518         add_cflags   -fno-strict-overflow -fstack-protector-all
3519         add_ldflags  -Wl,-z,relro -Wl,-z,now
3520     ;;
3521     ?*)
3522         die "Unknown toolchain $toolchain"
3523     ;;
3524 esac
3525
3526 test -n "$cross_prefix" && enable cross_compile
3527
3528 if enabled cross_compile; then
3529     test -n "$arch" && test -n "$target_os" ||
3530         die "Must specify target arch and OS when cross-compiling"
3531 fi
3532
3533 ar_default="${cross_prefix}${ar_default}"
3534 cc_default="${cross_prefix}${cc_default}"
3535 cxx_default="${cross_prefix}${cxx_default}"
3536 nm_default="${cross_prefix}${nm_default}"
3537 pkg_config_default="${cross_prefix}${pkg_config_default}"
3538 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3539     ranlib_default="${cross_prefix}${ranlib_default} -D"
3540 else
3541     ranlib_default="${cross_prefix}${ranlib_default}"
3542 fi
3543 strip_default="${cross_prefix}${strip_default}"
3544 windres_default="${cross_prefix}${windres_default}"
3545
3546 sysinclude_default="${sysroot}/usr/include"
3547
3548 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3549     target_exec target_os yasmexe
3550 enabled cross_compile || host_cc_default=$cc
3551 set_default host_cc
3552
3553 pkg_config_fail_message=""
3554 if ! $pkg_config --version >/dev/null 2>&1; then
3555     warn "$pkg_config not found, library detection may fail."
3556     pkg_config=false
3557 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3558     pkg_config_fail_message="
3559 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3560 fi
3561
3562 if test $doxygen != $doxygen_default && \
3563   ! $doxygen --version >/dev/null 2>&1; then
3564     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3565 fi
3566
3567 exesuf() {
3568     case $1 in
3569         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3570     esac
3571 }
3572
3573 EXESUF=$(exesuf $target_os)
3574 HOSTEXESUF=$(exesuf $host_os)
3575
3576 # set temporary file name
3577 : ${TMPDIR:=$TEMPDIR}
3578 : ${TMPDIR:=$TMP}
3579 : ${TMPDIR:=/tmp}
3580
3581 if [ -n "$tempprefix" ] ; then
3582     mktemp(){
3583         echo $tempprefix.${HOSTNAME}.${UID}
3584     }
3585 elif ! check_cmd mktemp -u XXXXXX; then
3586     # simple replacement for missing mktemp
3587     # NOT SAFE FOR GENERAL USE
3588     mktemp(){
3589         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3590     }
3591 fi
3592
3593 tmpfile(){
3594     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3595         (set -C; exec > $tmp) 2>/dev/null ||
3596         die "Unable to create temporary file in $TMPDIR."
3597     append TMPFILES $tmp
3598     eval $1=$tmp
3599 }
3600
3601 trap 'rm -f -- $TMPFILES' EXIT
3602
3603 tmpfile TMPASM .asm
3604 tmpfile TMPC   .c
3605 tmpfile TMPCPP .cpp
3606 tmpfile TMPE   $EXESUF
3607 tmpfile TMPH   .h
3608 tmpfile TMPM   .m
3609 tmpfile TMPO   .o
3610 tmpfile TMPS   .S
3611 tmpfile TMPSH  .sh
3612 tmpfile TMPV   .ver
3613
3614 unset -f mktemp
3615
3616 chmod +x $TMPE
3617
3618 # make sure we can execute files in $TMPDIR
3619 cat > $TMPSH 2>> $logfile <<EOF
3620 #! /bin/sh
3621 EOF
3622 chmod +x $TMPSH >> $logfile 2>&1
3623 if ! $TMPSH >> $logfile 2>&1; then
3624     cat <<EOF
3625 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3626 variable to another directory and make sure that it is not mounted noexec.
3627 EOF
3628     die "Sanity test failed."
3629 fi
3630
3631 armasm_flags(){
3632     for flag; do
3633         case $flag in
3634             # Filter out MSVC cl.exe options from cflags that shouldn't
3635             # be passed to gas-preprocessor
3636             -M[TD]*)                                            ;;
3637             *)                  echo $flag                      ;;
3638         esac
3639    done
3640 }
3641
3642 ccc_flags(){
3643     for flag; do
3644         case $flag in
3645             -std=c99)           echo -c99                       ;;
3646             -mcpu=*)            echo -arch ${flag#*=}           ;;
3647             -mieee)             echo -ieee                      ;;
3648             -O*|-fast)          echo $flag                      ;;
3649             -fno-math-errno)    echo -assume nomath_errno       ;;
3650             -g)                 echo -g3                        ;;
3651             -Wall)              echo -msg_enable level2         ;;
3652             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3653             -Wl,*)              echo $flag                      ;;
3654             -f*|-W*)                                            ;;
3655             *)                  echo $flag                      ;;
3656         esac
3657    done
3658 }
3659
3660 cparser_flags(){
3661     for flag; do
3662         case $flag in
3663             -Wno-switch)             echo -Wno-switch-enum ;;
3664             -Wno-format-zero-length) ;;
3665             -Wdisabled-optimization) ;;
3666             -Wno-pointer-sign)       echo -Wno-other ;;
3667             *)                       echo $flag ;;
3668         esac
3669     done
3670 }
3671
3672 msvc_common_flags(){
3673     for flag; do
3674         case $flag in
3675             # In addition to specifying certain flags under the compiler
3676             # specific filters, they must be specified here as well or else the
3677             # generic catch all at the bottom will print the original flag.
3678             -Wall)                ;;
3679             -std=c99)             ;;
3680             # Common flags
3681             -fomit-frame-pointer) ;;
3682             -g)                   echo -Z7 ;;
3683             -fno-math-errno)      ;;
3684             -fno-common)          ;;
3685             -fno-signed-zeros)    ;;
3686             -fPIC)                ;;
3687             -mthumb)              ;;
3688             -march=*)             ;;
3689             -lz)                  echo zlib.lib ;;
3690             -lavifil32)           echo vfw32.lib ;;
3691             -lavicap32)           echo vfw32.lib user32.lib ;;
3692             -lx264)               echo libx264.lib ;;
3693             -l*)                  echo ${flag#-l}.lib ;;
3694             -LARGEADDRESSAWARE)   echo $flag ;;
3695             -L*)                  echo -libpath:${flag#-L} ;;
3696             *)                    echo $flag ;;
3697         esac
3698     done
3699 }
3700
3701 msvc_flags(){
3702     msvc_common_flags "$@"
3703     for flag; do
3704         case $flag in
3705             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3706                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3707                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3708                                        -wd4307 \
3709                                        -wd4273 -wd4554 -wd4701 ;;
3710         esac
3711     done
3712 }
3713
3714 icl_flags(){
3715     msvc_common_flags "$@"
3716     for flag; do
3717         case $flag in
3718             # Despite what Intel's documentation says -Wall, which is supported
3719             # on Windows, does enable remarks so disable them here.
3720             -Wall)                echo $flag -Qdiag-disable:remark ;;
3721             -std=c99)             echo -Qstd=c99 ;;
3722             -flto)                echo -ipo ;;
3723         esac
3724     done
3725 }
3726
3727 icc_flags(){
3728     for flag; do
3729         case $flag in
3730             -flto)                echo -ipo ;;
3731             *)                    echo $flag ;;
3732         esac
3733     done
3734 }
3735
3736 pgi_flags(){
3737     for flag; do
3738         case $flag in
3739             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3740             -fomit-frame-pointer) echo -Mnoframe ;;
3741             -g)                   echo -gopt ;;
3742             *)                    echo $flag ;;
3743         esac
3744     done
3745 }
3746
3747 suncc_flags(){
3748     for flag; do
3749         case $flag in
3750             -march=*|-mcpu=*)
3751                 case "${flag#*=}" in
3752                     native)                   echo -xtarget=native       ;;
3753                     v9|niagara)               echo -xarch=sparc          ;;
3754                     ultrasparc)               echo -xarch=sparcvis       ;;
3755                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3756                     i586|pentium)             echo -xchip=pentium        ;;
3757                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3758                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3759                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3760                     pentium4*)          echo -xtarget=pentium4           ;;
3761                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3762                     *-sse3)             echo -xarch=sse3                 ;;
3763                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3764                     bonnell)                   echo -xarch=ssse3         ;;
3765                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3766                     westmere)                  echo -xtarget=westmere    ;;
3767                     silvermont)                echo -xarch=sse4_2        ;;
3768                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3769                     core-avx*|ivybridge|haswell|broadwell)
3770                                                echo -xarch=avx           ;;
3771                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3772                     btver1)                    echo -xarch=amdsse4a      ;;
3773                     btver2|bdver*)             echo -xarch=avx           ;;
3774                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3775                     k8|opteron|athlon64|athlon-fx)
3776                                                echo -xarch=sse2a         ;;
3777                     athlon*)                   echo -xarch=pentium_proa  ;;
3778                 esac
3779                 ;;
3780             -std=c99)             echo -xc99              ;;
3781             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3782             -fPIC)                echo -KPIC -xcode=pic32 ;;
3783             -W*,*)                echo $flag              ;;
3784             -f*-*|-W*|-mimpure-text)                      ;;
3785             -shared)              echo -G                 ;;
3786             *)                    echo $flag              ;;
3787         esac
3788     done
3789 }
3790
3791 tms470_flags(){
3792     for flag; do
3793         case $flag in
3794             -march=*|-mcpu=*)
3795                 case "${flag#*=}" in
3796                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3797                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3798                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3799                     armv6*|arm11*)          echo -mv=6   ;;
3800                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3801                                             echo -mv=5e  ;;
3802                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3803                 esac
3804                 ;;
3805             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3806             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3807             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3808             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3809             -msoft-float)   echo --float_support=vfplib       ;;
3810             -O[0-3]|-mf=*)  echo $flag                        ;;
3811             -g)             echo -g -mn                       ;;
3812             -pds=*)         echo $flag                        ;;
3813             -D*|-I*)        echo $flag                        ;;
3814             --gcc|--abi=*)  echo $flag                        ;;
3815             -me)            echo $flag                        ;;
3816         esac
3817     done
3818 }
3819
3820 probe_cc(){
3821     pfx=$1
3822     _cc=$2
3823     first=$3
3824
3825     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3826     unset _ld_o _ldflags _ld_lib _ld_path
3827     unset _depflags _DEPCMD _DEPFLAGS
3828     _flags_filter=echo
3829
3830     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3831         true # no-op to avoid reading stdin in following checks
3832     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3833         _type=llvm_gcc
3834         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3835         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3836         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3837         _cflags_speed='-O3'
3838         _cflags_size='-Os'
3839     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3840         _type=gcc
3841         gcc_version=$($_cc --version | head -n1)
3842         gcc_basever=$($_cc -dumpversion)
3843         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3844         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3845         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3846         case $gcc_basever in
3847             2) ;;
3848             2.*) ;;
3849             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3850         esac
3851         if [ "$first" = true ]; then
3852             case $gcc_basever in
3853                 4.2*)
3854                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3855             esac
3856         fi
3857         _cflags_speed='-O3'
3858         _cflags_size='-Os'
3859     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3860         _type=icc
3861         _ident=$($_cc --version | head -n1)
3862         _depflags='-MMD'
3863         _cflags_speed='-O3'
3864         _cflags_size='-Os'
3865         _cflags_noopt='-O1'
3866         _flags_filter=icc_flags
3867     elif $_cc -v 2>&1 | grep -q xlc; then
3868         _type=xlc
3869         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3870         _cflags_speed='-O5'
3871         _cflags_size='-O5 -qcompact'
3872     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3873         _type=ccc
3874         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3875         _DEPFLAGS='-M'
3876         _cflags_speed='-fast'
3877         _cflags_size='-O1'
3878         _flags_filter=ccc_flags
3879     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3880         test -d "$sysroot" || die "No valid sysroot specified."
3881         _type=armcc
3882         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3883         armcc_conf="$PWD/armcc.conf"
3884         $_cc --arm_linux_configure                 \
3885              --arm_linux_config_file="$armcc_conf" \
3886              --configure_sysroot="$sysroot"        \
3887              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3888              die "Error creating armcc configuration file."
3889         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3890         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3891         as_default="${cross_prefix}gcc"
3892         _depflags='-MMD'
3893         _cflags_speed='-O3'
3894         _cflags_size='-Os'
3895     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3896         _type=tms470
3897         _ident=$($_cc -version | head -n1 | tr -s ' ')
3898         _flags='--gcc --abi=eabi -me'
3899         _cc_e='-ppl -fe=$@'
3900         _cc_o='-fe=$@'
3901         _depflags='-ppa -ppd=$(@:.o=.d)'
3902         _cflags_speed='-O3 -mf=5'
3903         _cflags_size='-O3 -mf=2'
3904         _flags_filter=tms470_flags
3905     elif $_cc -v 2>&1 | grep -q clang; then
3906         _type=clang
3907         _ident=$($_cc --version 2>/dev/null | head -n1)
3908         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3909         _cflags_speed='-O3'
3910         _cflags_size='-Os'
3911     elif $_cc -V 2>&1 | grep -q Sun; then
3912         _type=suncc
3913         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3914         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3915         _DEPFLAGS='-xM1 -xc99'
3916         _ldflags='-std=c99'
3917         _cflags_speed='-O5'
3918         _cflags_size='-O5 -xspace'
3919         _flags_filter=suncc_flags
3920     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3921         _type=pathscale
3922         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3923         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3924         _cflags_speed='-O2'
3925         _cflags_size='-Os'
3926         _flags_filter='filter_out -Wdisabled-optimization'
3927     elif $_cc -v 2>&1 | grep -q Open64; then
3928         _type=open64
3929         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3930         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3931         _cflags_speed='-O2'
3932         _cflags_size='-Os'
3933         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3934     elif $_cc -V 2>&1 | grep -q Portland; then
3935         _type=pgi
3936         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3937         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3938         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3939         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3940         _cflags_noopt="-O"
3941         _flags_filter=pgi_flags
3942     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3943         _type=armasm
3944         _ident=$($_cc | head -n1)
3945         # 4509: "This form of conditional instruction is deprecated"
3946         _flags="-nologo -ignore 4509"
3947         _flags_filter=armasm_flags
3948     elif $_cc 2>&1 | grep -q Intel; then
3949         _type=icl
3950         _ident=$($_cc 2>&1 | head -n1)
3951         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3952         # Not only is O3 broken on 13.x+ but it is slower on all previous
3953         # versions (tested) as well.
3954         _cflags_speed="-O2"
3955         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3956         if $_cc 2>&1 | grep -q Linker; then
3957             _ld_o='-out:$@'
3958         else
3959             _ld_o='-Fe$@'
3960         fi
3961         _cc_o='-Fo$@'
3962         _cc_e='-P'
3963         _flags_filter=icl_flags
3964         _ld_lib='lib%.a'
3965         _ld_path='-libpath:'
3966         # -Qdiag-error to make icl error when seeing certain unknown arguments
3967         _flags='-nologo -Qdiag-error:4044,10157'
3968         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3969         # with MSVC which enables it by default.
3970         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3971         disable stripping
3972     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3973         _type=msvc
3974         _ident=$($_cc 2>&1 | head -n1)
3975         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3976         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3977         _cflags_speed="-O2"
3978         _cflags_size="-O1"
3979         if $_cc -nologo- 2>&1 | grep -q Linker; then
3980             _ld_o='-out:$@'
3981         else
3982             _ld_o='-Fe$@'
3983         fi
3984         _cc_o='-Fo$@'
3985         _cc_e='-P -Fi$@'
3986         _flags_filter=msvc_flags
3987         _ld_lib='lib%.a'
3988         _ld_path='-libpath:'
3989         _flags='-nologo'
3990         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3991         disable stripping
3992     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3993         _type=cparser
3994         _ident=$($_cc --version | head -n1)
3995         _depflags='-MMD'
3996         _cflags_speed='-O4'
3997         _cflags_size='-O2'
3998         _flags_filter=cparser_flags
3999     fi
4000
4001     eval ${pfx}_type=\$_type
4002     eval ${pfx}_ident=\$_ident
4003 }
4004
4005 set_ccvars(){
4006     eval ${1}_C=\${_cc_c-\${${1}_C}}
4007     eval ${1}_E=\${_cc_e-\${${1}_E}}
4008     eval ${1}_O=\${_cc_o-\${${1}_O}}
4009
4010     if [ -n "$_depflags" ]; then
4011         eval ${1}_DEPFLAGS=\$_depflags
4012     else
4013         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4014         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4015         eval DEP${1}FLAGS=\$_flags
4016     fi
4017 }
4018
4019 probe_cc cc "$cc" "true"
4020 cflags_filter=$_flags_filter
4021 cflags_speed=$_cflags_speed
4022 cflags_size=$_cflags_size
4023 cflags_noopt=$_cflags_noopt
4024 add_cflags $_flags $_cflags
4025 cc_ldflags=$_ldflags
4026 set_ccvars CC
4027
4028 probe_cc hostcc "$host_cc"
4029 host_cflags_filter=$_flags_filter
4030 add_host_cflags  $_flags $_cflags
4031 set_ccvars HOSTCC
4032
4033 test -n "$cc_type" && enable $cc_type ||
4034     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4035
4036 : ${as_default:=$cc}
4037 : ${objcc_default:=$cc}
4038 : ${dep_cc_default:=$cc}
4039 : ${ld_default:=$cc}
4040 : ${host_ld_default:=$host_cc}
4041 set_default ar as objcc dep_cc ld ln_s host_ld windres
4042
4043 probe_cc as "$as"
4044 asflags_filter=$_flags_filter
4045 add_asflags $_flags $_cflags
4046 set_ccvars AS
4047
4048 probe_cc objcc "$objcc"
4049 objcflags_filter=$_flags_filter
4050 add_objcflags $_flags $_cflags
4051 set_ccvars OBJC
4052
4053 probe_cc ld "$ld"
4054 ldflags_filter=$_flags_filter
4055 add_ldflags $_flags $_ldflags
4056 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4057 LD_O=${_ld_o-$LD_O}
4058 LD_LIB=${_ld_lib-$LD_LIB}
4059 LD_PATH=${_ld_path-$LD_PATH}
4060
4061 probe_cc hostld "$host_ld"
4062 host_ldflags_filter=$_flags_filter
4063 add_host_ldflags $_flags $_ldflags
4064 HOSTLD_O=${_ld_o-$HOSTLD_O}
4065
4066 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4067     probe_cc depcc "$dep_cc"
4068     CCDEP=${_DEPCMD:-$DEPCMD}
4069     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4070     DEPCCFLAGS=$_flags
4071 fi
4072
4073 if $ar 2>&1 | grep -q Microsoft; then
4074     arflags="-nologo"
4075     ar_o='-out:$@'
4076 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4077     arflags="rq"
4078     ar_o='$@'
4079 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4080     arflags='-Xany -r -c'
4081     ar_o='$@'
4082 elif $ar 2>&1 | grep -q "\[D\] "; then
4083     arflags="rcD"
4084     ar_o='$@'
4085 else
4086     arflags="rc"
4087     ar_o='$@'
4088 fi
4089
4090 add_cflags $extra_cflags
4091 add_cxxflags $extra_cxxflags
4092 add_objcflags $extra_objcflags
4093 add_asflags $extra_cflags
4094
4095 if test -n "$sysroot"; then
4096     case "$cc_type" in
4097         gcc|llvm_gcc|clang)
4098             add_cppflags --sysroot="$sysroot"
4099             add_ldflags --sysroot="$sysroot"
4100 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4101             add_cppflags -isysroot "$sysroot"
4102             add_ldflags -isysroot "$sysroot"
4103         ;;
4104         tms470)
4105             add_cppflags -I"$sysinclude"
4106             add_ldflags  --sysroot="$sysroot"
4107         ;;
4108     esac
4109 fi
4110
4111 if test "$cpu" = host; then
4112     enabled cross_compile &&
4113         die "--cpu=host makes no sense when cross-compiling."
4114
4115     case "$cc_type" in
4116         gcc|llvm_gcc)
4117             check_native(){
4118                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4119                 sed -n "/cc1.*$1=/{
4120                             s/.*$1=\\([^ ]*\\).*/\\1/
4121                             p
4122                             q
4123                         }" $TMPE
4124             }
4125             cpu=$(check_native -march || check_native -mcpu)
4126         ;;
4127         clang)
4128             check_native(){
4129                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4130                 sed -n "/cc1.*-target-cpu /{
4131                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4132                             p
4133                             q
4134                         }" $TMPE
4135             }
4136             cpu=$(check_native -march)
4137         ;;
4138     esac
4139
4140     test "${cpu:-host}" = host &&
4141         die "--cpu=host not supported with compiler $cc"
4142 fi
4143
4144 # Deal with common $arch aliases
4145 case "$arch" in
4146     aarch64|arm64)
4147         arch="aarch64"
4148     ;;
4149     arm*|iPad*|iPhone*)
4150         arch="arm"
4151     ;;
4152     mips*|IP*)
4153         case "$arch" in
4154         *el)
4155             add_cppflags -EL
4156             add_ldflags -EL
4157         ;;
4158         *eb)
4159             add_cppflags -EB
4160             add_ldflags -EB
4161         ;;
4162         esac
4163         arch="mips"
4164     ;;
4165     parisc*|hppa*)
4166         arch="parisc"
4167     ;;
4168     "Power Macintosh"|ppc*|powerpc*)
4169         arch="ppc"
4170     ;;
4171     s390|s390x)
4172         arch="s390"
4173     ;;
4174     sh4|sh)
4175         arch="sh4"
4176     ;;
4177     sun4u|sparc*)
4178         arch="sparc"
4179     ;;
4180     tilegx|tile-gx)
4181         arch="tilegx"
4182     ;;
4183     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4184         arch="x86"
4185     ;;
4186 esac
4187
4188 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4189 enable $arch
4190
4191 # Add processor-specific flags
4192 if enabled aarch64; then
4193
4194     case $cpu in
4195         armv*)
4196             cpuflags="-march=$cpu"
4197         ;;
4198         *)
4199             cpuflags="-mcpu=$cpu"
4200         ;;
4201     esac
4202
4203 elif enabled alpha; then
4204
4205     cpuflags="-mcpu=$cpu"
4206
4207 elif enabled arm; then
4208
4209     check_arm_arch() {
4210         check_cpp_condition stddef.h \
4211             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4212             $cpuflags
4213     }
4214
4215     probe_arm_arch() {
4216         if   check_arm_arch 4;        then echo armv4
4217         elif check_arm_arch 4T;       then echo armv4t
4218         elif check_arm_arch 5;        then echo armv5
4219         elif check_arm_arch 5E;       then echo armv5e
4220         elif check_arm_arch 5T;       then echo armv5t
4221         elif check_arm_arch 5TE;      then echo armv5te
4222         elif check_arm_arch 5TEJ;     then echo armv5te
4223         elif check_arm_arch 6;        then echo armv6
4224         elif check_arm_arch 6J;       then echo armv6j
4225         elif check_arm_arch 6K;       then echo armv6k
4226         elif check_arm_arch 6Z;       then echo armv6z
4227         elif check_arm_arch 6ZK;      then echo armv6zk
4228         elif check_arm_arch 6T2;      then echo armv6t2
4229         elif check_arm_arch 7;        then echo armv7
4230         elif check_arm_arch 7A  7_A;  then echo armv7-a
4231         elif check_arm_arch 7S;       then echo armv7-a
4232         elif check_arm_arch 7R  7_R;  then echo armv7-r
4233         elif check_arm_arch 7M  7_M;  then echo armv7-m
4234         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4235         elif check_arm_arch 8A  8_A;  then echo armv8-a
4236         fi
4237     }
4238
4239     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4240
4241     case $cpu in
4242         armv*)
4243             cpuflags="-march=$cpu"
4244             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4245         ;;
4246         *)
4247             cpuflags="-mcpu=$cpu"
4248             case $cpu in
4249                 cortex-a*)                               subarch=armv7a  ;;
4250                 cortex-r*)                               subarch=armv7r  ;;
4251                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4252                 arm11*)                                  subarch=armv6   ;;
4253                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4254                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4255                 *)                             subarch=$(probe_arm_arch) ;;
4256             esac
4257         ;;
4258     esac
4259
4260     case "$subarch" in
4261         armv5t*)    enable fast_clz                ;;
4262         armv[6-8]*)
4263             enable fast_clz
4264             disabled fast_unaligned || enable fast_unaligned
4265             ;;
4266     esac
4267
4268 elif enabled avr32; then
4269
4270     case $cpu in
4271         ap7[02]0[0-2])
4272             subarch="avr32_ap"
4273             cpuflags="-mpart=$cpu"
4274         ;;
4275         ap)
4276             subarch="avr32_ap"
4277             cpuflags="-march=$cpu"
4278         ;;
4279         uc3[ab]*)
4280             subarch="avr32_uc"
4281             cpuflags="-mcpu=$cpu"
4282         ;;
4283         uc)
4284             subarch="avr32_uc"
4285             cpuflags="-march=$cpu"
4286         ;;
4287     esac
4288
4289 elif enabled bfin; then
4290
4291     cpuflags="-mcpu=$cpu"
4292
4293 elif enabled mips; then
4294
4295     cpuflags="-march=$cpu"
4296
4297     if [ "$cpu" != "generic" ]; then
4298         disable mips32r2
4299         disable mips32r5
4300         disable mips64r2
4301         disable mips32r6
4302         disable mips64r6
4303         disable loongson2
4304         disable loongson3
4305
4306         case $cpu in
4307             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4308                 enable mips32r2
4309                 disable msa
4310             ;;
4311             p5600|i6400)
4312                 disable mipsdsp
4313                 disable mipsdspr2
4314             ;;
4315             loongson*)
4316                 enable loongson2
4317                 enable loongson3
4318                 enable local_aligned_8 local_aligned_16 local_aligned_32
4319                 enable simd_align_16
4320                 enable fast_64bit
4321                 enable fast_clz
4322                 enable fast_cmov
4323                 enable fast_unaligned
4324                 disable aligned_stack
4325                 case $cpu in
4326                     loongson3*)
4327                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4328                     ;;
4329                     loongson2e)
4330                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4331                     ;;
4332                     loongson2f)
4333                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4334                     ;;
4335                 esac
4336             ;;
4337             *)
4338                 # Unknown CPU. Disable everything.
4339                 warn "unknown CPU. Disabling all MIPS optimizations."
4340                 disable mipsfpu
4341                 disable mipsdsp
4342                 disable mipsdspr2
4343                 disable msa
4344                 disable mmi
4345             ;;
4346         esac
4347
4348         case $cpu in
4349             24kc)
4350                 disable mipsfpu
4351                 disable mipsdsp
4352                 disable mipsdspr2
4353             ;;
4354             24kf*)
4355                 disable mipsdsp
4356                 disable mipsdspr2
4357             ;;
4358             24kec|34kc|1004kc)
4359                 disable mipsfpu
4360                 disable mipsdspr2
4361             ;;
4362             24kef*|34kf*|1004kf*)
4363                 disable mipsdspr2
4364             ;;
4365             74kc)
4366                 disable mipsfpu
4367             ;;
4368             p5600)
4369                 enable mips32r5
4370                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4371             ;;
4372             i6400)
4373                 enable mips64r6
4374                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4375             ;;
4376         esac
4377     else
4378         # We do not disable anything. Is up to the user to disable the unwanted features.
4379         warn 'generic cpu selected'
4380     fi
4381
4382 elif enabled ppc; then
4383
4384     disable ldbrx
4385
4386     case $(tolower $cpu) in
4387         601|ppc601|powerpc601)
4388             cpuflags="-mcpu=601"
4389             disable altivec
4390         ;;
4391         603*|ppc603*|powerpc603*)
4392             cpuflags="-mcpu=603"
4393             disable altivec
4394         ;;
4395         604*|ppc604*|powerpc604*)
4396             cpuflags="-mcpu=604"
4397             disable altivec
4398         ;;
4399         g3|75*|ppc75*|powerpc75*)
4400             cpuflags="-mcpu=750"
4401             disable altivec
4402         ;;
4403         g4|745*|ppc745*|powerpc745*)
4404             cpuflags="-mcpu=7450"
4405             disable vsx
4406         ;;
4407         74*|ppc74*|powerpc74*)
4408             cpuflags="-mcpu=7400"
4409             disable vsx
4410         ;;
4411         g5|970|ppc970|powerpc970)
4412             cpuflags="-mcpu=970"
4413             disable vsx
4414         ;;
4415         power[3-6]*)
4416             cpuflags="-mcpu=$cpu"
4417             disable vsx
4418         ;;
4419         power[7-8]*)
4420             cpuflags="-mcpu=$cpu"
4421         ;;
4422         cell)
4423             cpuflags="-mcpu=cell"
4424             enable ldbrx
4425             disable vsx
4426         ;;
4427         e500mc)
4428             cpuflags="-mcpu=e500mc"
4429             disable altivec
4430         ;;
4431         e500v2)
4432             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4433             disable altivec
4434             disable dcbzl
4435         ;;
4436         e500)
4437             cpuflags="-mcpu=8540 -mhard-float"
4438             disable altivec
4439             disable dcbzl
4440         ;;
4441     esac
4442
4443 elif enabled sparc; then
4444
4445     case $cpu in
4446         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4447             cpuflags="-mcpu=$cpu"
4448         ;;
4449         ultrasparc*|niagara[234])
4450             cpuflags="-mcpu=$cpu"
4451         ;;
4452     esac
4453
4454 elif enabled x86; then
4455
4456     case $cpu in
4457         i[345]86|pentium)
4458             cpuflags="-march=$cpu"
4459             disable i686
4460             disable mmx
4461         ;;
4462         # targets that do NOT support nopl and conditional mov (cmov)
4463         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4464             cpuflags="-march=$cpu"
4465             disable i686
4466         ;;
4467         # targets that do support nopl and conditional mov (cmov)
4468         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4469         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4470             cpuflags="-march=$cpu"
4471             enable i686
4472             enable fast_cmov
4473         ;;
4474         # targets that do support conditional mov but on which it's slow
4475         pentium4|pentium4m|prescott|nocona)
4476             cpuflags="-march=$cpu"
4477             enable i686
4478             disable fast_cmov
4479         ;;
4480     esac
4481
4482 fi
4483
4484 if [ "$cpu" != generic ]; then
4485     add_cflags  $cpuflags
4486     add_asflags $cpuflags
4487     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4488 fi
4489
4490 # compiler sanity check
4491 check_exec <<EOF
4492 int main(void){ return 0; }
4493 EOF
4494 if test "$?" != 0; then
4495     echo "$cc is unable to create an executable file."
4496     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4497         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4498         echo "Only do this if you know what cross compiling means."
4499     fi
4500     die "C compiler test failed."
4501 fi
4502
4503 add_cppflags -D_ISOC99_SOURCE
4504 add_cxxflags -D__STDC_CONSTANT_MACROS
4505 check_cflags -std=c99
4506 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4507 #include <stdlib.h>
4508 EOF
4509 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4510 #include <stdlib.h>
4511 EOF
4512
4513 add_host_cppflags -D_ISOC99_SOURCE
4514 check_host_cflags -std=c99
4515 check_host_cflags -Wall
4516 check_host_cflags -O3
4517
4518 check_64bit(){
4519     arch32=$1
4520     arch64=$2
4521     expr=$3
4522     check_code cc "" "int test[2*($expr) - 1]" &&
4523         subarch=$arch64 || subarch=$arch32
4524 }
4525
4526 case "$arch" in
4527     aarch64|alpha|ia64)
4528         spic=$shared
4529     ;;
4530     mips)
4531         check_64bit mips mips64 '_MIPS_SIM > 1'
4532         spic=$shared
4533     ;;
4534     parisc)
4535         check_64bit parisc parisc64 'sizeof(void *) > 4'
4536         spic=$shared
4537     ;;
4538     ppc)
4539         check_64bit ppc ppc64 'sizeof(void *) > 4'
4540         spic=$shared
4541     ;;
4542     s390)
4543         check_64bit s390 s390x 'sizeof(void *) > 4'
4544         spic=$shared
4545     ;;
4546     sparc)
4547         check_64bit sparc sparc64 'sizeof(void *) > 4'
4548         spic=$shared
4549     ;;
4550     x86)
4551         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4552         # Treat x32 as x64 for now. Note it also needs spic=$shared
4553         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4554             subarch=x86_64
4555         if test "$subarch" = "x86_64"; then
4556             spic=$shared
4557         fi
4558     ;;
4559     ppc)
4560         check_cc <<EOF && subarch="ppc64"
4561         int test[(int)sizeof(char*) - 7];
4562 EOF
4563     ;;
4564 esac
4565
4566 enable $subarch
4567 enabled spic && enable_weak pic
4568
4569 # OS specific
4570 case $target_os in
4571     aix)
4572         SHFLAGS=-shared
4573         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4574         enabled shared && add_ldflags -Wl,-brtl
4575         ;;
4576     android)
4577         disable symver
4578         enable section_data_rel_ro
4579         SLIB_INSTALL_NAME='$(SLIBNAME)'
4580         SLIB_INSTALL_LINKS=
4581         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4582         ;;
4583     haiku)
4584         prefix_default="/boot/common"
4585         network_extralibs="-lnetwork"
4586         host_libs=
4587         ;;
4588     sunos)
4589         SHFLAGS='-shared -Wl,-h,$$(@F)'
4590         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4591         network_extralibs="-lsocket -lnsl"
4592         add_cppflags -D__EXTENSIONS__
4593         # When using suncc to build, the Solaris linker will mark
4594         # an executable with each instruction set encountered by
4595         # the Solaris assembler.  As our libraries contain their own
4596         # guards for processor-specific code, instead suppress
4597         # generation of the HWCAPS ELF section on Solaris x86 only.
4598         enabled_all suncc x86 &&
4599             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4600             add_ldflags -Wl,-M,mapfile
4601         nm_default='nm -P -g'
4602         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4603         ;;
4604     netbsd)
4605         disable symver
4606         oss_indev_extralibs="-lossaudio"
4607         oss_outdev_extralibs="-lossaudio"
4608         enabled gcc || check_ldflags -Wl,-zmuldefs
4609         ;;
4610     openbsd|bitrig)
4611         disable symver
4612         SHFLAGS='-shared'
4613         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4614         SLIB_INSTALL_LINKS=
4615         oss_indev_extralibs="-lossaudio"
4616         oss_outdev_extralibs="-lossaudio"
4617         ;;
4618     dragonfly)
4619         disable symver
4620         ;;
4621     freebsd)
4622         ;;
4623     bsd/os)
4624         add_extralibs -lpoll -lgnugetopt
4625         strip="strip -d"
4626         ;;
4627     darwin)
4628         enabled ppc && add_asflags -force_cpusubtype_ALL
4629         install_name_dir_default='$(SHLIBDIR)'
4630         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4631         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4632         strip="${strip} -x"
4633         add_ldflags -Wl,-dynamic,-search_paths_first
4634         SLIBSUF=".dylib"
4635         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4636         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4637         objformat="macho"
4638         enabled x86_64 && objformat="macho64"
4639         enabled_any pic shared x86_64 ||
4640             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4641         check_header dispatch/dispatch.h &&
4642             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4643         ;;
4644     msys*)
4645         die "Native MSYS builds are discouraged, please use the MINGW environment."
4646         ;;
4647     mingw32*|mingw64*)
4648         if test $target_os = "mingw32ce"; then
4649             disable network
4650         else
4651             target_os=mingw32
4652         fi
4653         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4654         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4655         LIBTARGET=i386
4656         if enabled x86_64; then
4657             LIBTARGET="i386:x86-64"
4658         elif enabled arm; then
4659             LIBTARGET=arm-wince
4660         fi
4661         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4662         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4663         shlibdir_default="$bindir_default"
4664         SLIBPREF=""
4665         SLIBSUF=".dll"
4666         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4667         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4668         dlltool="${cross_prefix}dlltool"
4669         if check_cmd lib.exe -list; then
4670             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4671             if enabled x86_64; then
4672                 LIBTARGET=x64
4673             fi
4674         elif check_cmd $dlltool --version; then
4675             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4676         fi
4677         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4678         SLIB_INSTALL_LINKS=
4679         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4680         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4681         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4682         objformat="win32"
4683         ranlib=:
4684         enable dos_paths
4685         check_ldflags -Wl,--nxcompat,--dynamicbase
4686         # Lets work around some stupidity in binutils.
4687         # ld will strip relocations from executables even though we need them
4688         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4689         # however ld then forgets what the entry point should be (oops) so we
4690         # have to manually (re)set it.
4691         if enabled x86_32; then
4692             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4693         elif enabled x86_64; then
4694             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4695             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4696             # Set image base >4GB for extra entropy with HEASLR
4697             add_ldexeflags -Wl,--image-base,0x140000000
4698             append SHFLAGS -Wl,--image-base,0x180000000
4699         fi
4700         ;;
4701     win32|win64)
4702         disable symver
4703         if enabled shared; then
4704             # Link to the import library instead of the normal static library
4705             # for shared libs.
4706             LD_LIB='%.lib'
4707             # Cannot build both shared and static libs with MSVC or icl.
4708             disable static
4709         fi
4710         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4711         shlibdir_default="$bindir_default"
4712         SLIBPREF=""
4713         SLIBSUF=".dll"
4714         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4715         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4716         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4717         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4718         SLIB_INSTALL_LINKS=
4719         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4720         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4721         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4722         objformat="win32"
4723         ranlib=:
4724         enable dos_paths
4725         ;;
4726     cygwin*)
4727         target_os=cygwin
4728         shlibdir_default="$bindir_default"
4729         SLIBPREF="cyg"
4730         SLIBSUF=".dll"
4731         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4732         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4733         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4734         SLIB_INSTALL_LINKS=
4735         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4736         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4737         objformat="win32"
4738         enable dos_paths
4739         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4740         ;;
4741     *-dos|freedos|opendos)
4742         network_extralibs="-lsocket"
4743         objformat="coff"
4744         enable dos_paths
4745         add_cppflags -U__STRICT_ANSI__
4746         ;;
4747     linux)
4748         enable dv1394
4749         enable section_data_rel_ro
4750         ;;
4751     irix*)
4752         target_os=irix
4753         ranlib="echo ignoring ranlib"
4754         ;;
4755     os/2*)
4756         strip="lxlite -CS"
4757         objformat="aout"
4758         add_cppflags -D_GNU_SOURCE
4759         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4760         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4761         LIBSUF="_s.a"
4762         SLIBPREF=""
4763         SLIBSUF=".dll"
4764         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4765         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4766         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4767             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4768             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4769             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4770             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4771         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4772             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4773         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4774         SLIB_INSTALL_LINKS=
4775         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4776         enable dos_paths
4777         enable_weak os2threads
4778         ;;
4779     gnu/kfreebsd)
4780         add_cppflags -D_BSD_SOURCE
4781         ;;
4782     gnu)
4783         ;;
4784     qnx)
4785         add_cppflags -D_QNX_SOURCE
4786         network_extralibs="-lsocket"
4787         ;;
4788     symbian)
4789         SLIBSUF=".dll"
4790         enable dos_paths
4791         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4792         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4793         add_ldflags -Wl,--target1-abs,--no-undefined \
4794                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4795                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4796         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4797                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4798                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4799         ;;
4800     osf1)
4801         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4802         ;;
4803     minix)
4804         ;;
4805     plan9)
4806         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4807                      -D_REENTRANT_SOURCE        \
4808                      -D_RESEARCH_SOURCE         \
4809                      -DFD_SETSIZE=96            \
4810                      -DHAVE_SOCK_OPTS
4811         add_compat strtod.o strtod=avpriv_strtod
4812         network_extralibs='-lbsd'
4813         exeobjs=compat/plan9/main.o
4814         disable ffserver
4815         cp_f='cp'
4816         ;;
4817     none)
4818         ;;
4819     *)
4820         die "Unknown OS '$target_os'."
4821         ;;
4822 esac
4823
4824 # test if creating links works
4825 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4826 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4827 mkdir "$link_dest"
4828 $ln_s "$link_dest" "$link_name"
4829 touch "$link_dest/test_file"
4830 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4831     # create link to source path
4832     [ -e src ] && rm src
4833     $ln_s "$source_path" src
4834     source_link=src
4835 else
4836     # creating directory links doesn't work
4837     # fall back to using the full source path
4838     source_link="$source_path"
4839 fi
4840 # cleanup
4841 rm -r "$link_dest"
4842 rm -r "$link_name"
4843
4844 # determine libc flavour
4845
4846 probe_libc(){
4847     pfx=$1
4848     pfx_no_=${pfx%_}
4849     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4850     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4851         eval ${pfx}libc_type=uclibc
4852         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4853     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4854         eval ${pfx}libc_type=glibc
4855         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4856     # MinGW headers can be installed on Cygwin, so check for newlib first.
4857     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4858         eval ${pfx}libc_type=newlib
4859         add_${pfx}cppflags -U__STRICT_ANSI__
4860     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4861     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4862         eval ${pfx}libc_type=mingw64
4863         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4864             add_compat msvcrt/snprintf.o
4865             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4866         fi
4867         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4868         eval test \$${pfx_no_}cc_type = "gcc" &&
4869             add_${pfx}cppflags -D__printf__=__gnu_printf__
4870     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4871          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4872         eval ${pfx}libc_type=mingw32
4873         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4874             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4875             die "ERROR: MinGW32 runtime version must be >= 3.15."
4876         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4877         eval test \$${pfx_no_}cc_type = "gcc" &&
4878             add_${pfx}cppflags -D__printf__=__gnu_printf__
4879     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4880         eval ${pfx}libc_type=msvcrt
4881         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4882             if [ "$pfx" = host_ ]; then
4883                 add_host_cppflags -Dsnprintf=_snprintf
4884             else
4885                 add_compat strtod.o strtod=avpriv_strtod
4886                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4887                                              _snprintf=avpriv_snprintf  \
4888                                              vsnprintf=avpriv_vsnprintf
4889             fi
4890         fi
4891         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4892         # 0x601 by default unless something else is set by the user.
4893         # This can easily lead to us detecting functions only present
4894         # in such new versions and producing binaries requiring windows 7.0.
4895         # Therefore explicitly set the default to XP unless the user has
4896         # set something else on the command line.
4897         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4898         # family. For these cases, configure is free to use any functions
4899         # found in the SDK headers by default. (Alternatively, we could force
4900         # _WIN32_WINNT to 0x0602 in that case.)
4901         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4902             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4903 #ifdef WINAPI_FAMILY
4904 #include <winapifamily.h>
4905 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4906 #error not desktop
4907 #endif
4908 #endif
4909 EOF
4910     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4911         eval ${pfx}libc_type=klibc
4912     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4913         eval ${pfx}libc_type=bionic
4914     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4915         eval ${pfx}libc_type=solaris
4916         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4917     fi
4918     check_${pfx}cc <<EOF
4919 #include <time.h>
4920 void *v = localtime_r;
4921 EOF
4922 test "$?" != 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
4923 #include <time.h>
4924 void *v = localtime_r;
4925 EOF
4926
4927 }
4928
4929 probe_libc
4930 test -n "$libc_type" && enable libc_$libc_type
4931 probe_libc host_
4932 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4933
4934 case $libc_type in
4935     bionic)
4936         add_compat strtod.o strtod=avpriv_strtod
4937         ;;
4938 esac
4939
4940 # hacks for compiler/libc/os combinations
4941
4942 if enabled_all tms470 libc_glibc; then
4943     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4944     add_cppflags -D__USER_LABEL_PREFIX__=
4945     add_cppflags -D__builtin_memset=memset
4946     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4947     add_cflags   -pds=48    # incompatible redefinition of macro
4948 fi
4949
4950 if enabled_all ccc libc_glibc; then
4951     add_ldflags -Wl,-z,now  # calls to libots crash without this
4952 fi
4953
4954 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4955     add_cppflags '-I\$(SRC_PATH)/compat/float'
4956
4957 esc(){
4958     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4959 }
4960
4961 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4962
4963 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4964
4965 set_default libdir
4966 : ${shlibdir_default:="$libdir"}
4967 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4968
4969 set_default $PATHS_LIST
4970 set_default nm
4971
4972 # we need to build at least one lib type
4973 if ! enabled_any static shared; then
4974     cat <<EOF
4975 At least one library type must be built.
4976 Specify --enable-static to build the static libraries or --enable-shared to
4977 build the shared libraries as well. To only build the shared libraries specify
4978 --disable-static in addition to --enable-shared.
4979 EOF
4980     exit 1
4981 fi
4982
4983 die_license_disabled() {
4984     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4985 }
4986
4987 die_license_disabled_gpl() {
4988     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4989 }
4990
4991 die_license_disabled gpl frei0r
4992 die_license_disabled gpl libcdio
4993 die_license_disabled gpl librubberband
4994 die_license_disabled gpl libsmbclient
4995 die_license_disabled gpl libutvideo
4996 die_license_disabled gpl libvidstab
4997 die_license_disabled gpl libx264
4998 die_license_disabled gpl libx265
4999 die_license_disabled gpl libxavs
5000 die_license_disabled gpl libxvid
5001 die_license_disabled gpl x11grab
5002
5003 die_license_disabled nonfree cuda
5004 die_license_disabled nonfree libfaac
5005 die_license_disabled nonfree libnpp
5006 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5007 enabled gpl && die_license_disabled_gpl nonfree openssl
5008
5009 die_license_disabled version3 gmp
5010 die_license_disabled version3 libopencore_amrnb
5011 die_license_disabled version3 libopencore_amrwb
5012 die_license_disabled version3 libsmbclient
5013 die_license_disabled version3 libvo_amrwbenc
5014
5015 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5016
5017 disabled optimizations || check_cflags -fomit-frame-pointer
5018
5019 enable_weak_pic() {
5020     disabled pic && return
5021     enable pic
5022     add_cppflags -DPIC
5023     case "$target_os" in
5024     mingw*|cygwin*)
5025         ;;
5026     *)
5027         add_cflags -fPIC
5028         ;;
5029     esac
5030     add_asflags  -fPIC
5031 }
5032
5033 enabled pic && enable_weak_pic
5034
5035 check_cc <<EOF || die "Symbol mangling check failed."
5036 int ff_extern;
5037 EOF
5038 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5039 extern_prefix=${sym%%ff_extern*}
5040
5041 check_cc <<EOF && enable_weak inline_asm
5042 void foo(void) { __asm__ volatile ("" ::); }
5043 EOF
5044
5045 _restrict=
5046 for restrict_keyword in restrict __restrict__ __restrict; do
5047     check_cc <<EOF && _restrict=$restrict_keyword && break
5048 void foo(char * $restrict_keyword p);
5049 EOF
5050 done
5051
5052 check_cc <<EOF && enable pragma_deprecated
5053 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5054 EOF
5055
5056 check_cc <<EOF && enable attribute_packed
5057 struct { int x; } __attribute__((packed)) x;
5058 EOF
5059
5060 check_cc <<EOF && enable attribute_may_alias
5061 union { int x; } __attribute__((may_alias)) x;
5062 EOF
5063
5064 check_cc <<EOF || die "endian test failed"
5065 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5066 EOF
5067 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5068
5069 if ! enabled ppc64 || enabled bigendian; then
5070     disable vsx
5071 fi
5072
5073 check_gas() {
5074     log "check_gas using '$as' as AS"
5075     # :vararg is used on aarch64, arm and ppc altivec
5076     check_as <<EOF || return 1
5077 .macro m n, y:vararg=0
5078 \n: .int \y
5079 .endm
5080 m x
5081 EOF
5082     # .altmacro is only used in arm asm
5083     ! enabled arm || check_as <<EOF || return 1
5084 .altmacro
5085 EOF
5086     enable gnu_as
5087     return 0
5088 }
5089
5090 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5091     nogas=:
5092     enabled_any arm aarch64 && nogas=die
5093     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5094     as_noop=-v
5095
5096     case $as_type in
5097         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5098         gcc)  gaspp_as_type=gas ;;
5099         *)    gaspp_as_type=$as_type ;;
5100     esac
5101
5102     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5103
5104     test "${as#*gas-preprocessor.pl}" != "$as" ||
5105     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5106         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5107
5108     if ! check_gas ; then
5109         as=${gas:=$as}
5110         check_gas || \
5111             $nogas "GNU assembler not found, install/update gas-preprocessor"
5112     fi
5113
5114     check_as <<EOF && enable as_func
5115 .func test
5116 .endfunc
5117 EOF
5118 fi
5119
5120 check_inline_asm inline_asm_labels '"1:\n"'
5121
5122 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5123
5124 if enabled aarch64; then
5125     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5126     # internal assembler in clang 3.3 does not support this instruction
5127     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5128     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5129
5130     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5131
5132 elif enabled alpha; then
5133
5134     check_cflags -mieee
5135
5136 elif enabled arm; then
5137
5138     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5139
5140     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5141 float func(float a, float b){ return a+b; }
5142 EOF
5143
5144     enabled thumb && check_cflags -mthumb || check_cflags -marm
5145
5146     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5147         enable vfp_args
5148     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5149         enable vfp_args
5150     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5151         case "${cross_prefix:-$cc}" in
5152             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5153             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5154 __asm__ (".eabi_attribute 28, 1");
5155 int main(void) { return 0; }
5156 EOF
5157         esac
5158         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5159     fi
5160
5161     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5162     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5163     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5164     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5165     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5166     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5167     enabled setend  && check_insn setend  'setend be'
5168
5169     [ $target_os = linux ] || [ $target_os = android ] ||
5170         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5171             $ARCH_EXT_LIST_ARM
5172
5173     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5174
5175     check_as <<EOF && enable as_dn_directive
5176 ra .dn d0.i16
5177 .unreq ra
5178 EOF
5179
5180     # llvm's integrated assembler supports .object_arch from llvm 3.5
5181     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5182 .object_arch armv4
5183 EOF
5184
5185     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5186
5187 elif enabled mips; then
5188
5189     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5190     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5191     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5192
5193     # Enable minimum ISA based on selected options
5194     if enabled mips64; then
5195         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5196         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5197         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5198     else
5199         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5200         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5201         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5202         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5203     fi
5204
5205     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5206     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5207     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5208     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5209     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5210
5211 elif enabled parisc; then
5212
5213     if enabled gcc; then
5214         case $($cc -dumpversion) in
5215             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5216         esac
5217     fi
5218
5219 elif enabled ppc; then
5220
5221     enable local_aligned_8 local_aligned_16 local_aligned_32
5222
5223     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5224     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5225     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5226     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5227
5228     # AltiVec flags: The FSF version of GCC differs from the Apple version
5229     if enabled altivec; then
5230         check_cflags -maltivec -mabi=altivec &&
5231         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5232         check_cflags -faltivec
5233
5234         # check if our compiler supports Motorola AltiVec C API
5235         check_cc <<EOF || disable altivec
5236 $inc_altivec_h
5237 int main(void) {
5238     vector signed int v1 = (vector signed int) { 0 };
5239     vector signed int v2 = (vector signed int) { 1 };
5240     v1 = vec_add(v1, v2);
5241     return 0;
5242 }
5243 EOF
5244
5245         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5246     fi
5247
5248     if enabled vsx; then
5249         check_cflags -mvsx &&
5250         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5251     fi
5252
5253     if enabled power8; then
5254         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5255     fi
5256
5257 elif enabled x86; then
5258
5259     check_builtin rdtsc    intrin.h   "__rdtsc()"
5260     check_builtin mm_empty mmintrin.h "_mm_empty()"
5261
5262     enable local_aligned_8 local_aligned_16 local_aligned_32
5263
5264     # check whether EBP is available on x86
5265     # As 'i' is stored on the stack, this program will crash
5266     # if the base pointer is used to access it because the
5267     # base pointer is cleared in the inline assembly code.
5268     check_exec_crash <<EOF && enable ebp_available
5269 volatile int i=0;
5270 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5271 return i;
5272 EOF
5273
5274     # check whether EBX is available on x86
5275     check_inline_asm ebx_available '""::"b"(0)' &&
5276         check_inline_asm ebx_available '"":::"%ebx"'
5277
5278     # check whether xmm clobbers are supported
5279     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5280
5281     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5282         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5283
5284     # check whether binutils is new enough to compile SSSE3/MMXEXT
5285     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5286     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5287
5288     if ! disabled_any asm mmx yasm; then
5289         if check_cmd $yasmexe --version; then
5290             enabled x86_64 && yasm_extra="-m amd64"
5291             yasm_debug="-g dwarf2"
5292         elif check_cmd nasm -v; then
5293             yasmexe=nasm
5294             yasm_debug="-g -F dwarf"
5295             if enabled x86_64; then
5296                 case "$objformat" in
5297                     elf)   objformat=elf64 ;;
5298                     win32) objformat=win64 ;;
5299                 esac
5300             fi
5301         fi
5302
5303         YASMFLAGS="-f $objformat $yasm_extra"
5304         enabled pic               && append YASMFLAGS "-DPIC"
5305         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5306         case "$objformat" in
5307             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5308         esac
5309
5310         check_yasm "movbe ecx, [5]" && enable yasm ||
5311             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5312         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5313         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5314         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5315         check_yasm "CPU amdnop" || disable cpunop
5316     fi
5317
5318     case "$cpu" in
5319         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5320             disable fast_clz
5321         ;;
5322     esac
5323
5324 fi
5325
5326 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5327
5328 check_ldflags -Wl,--as-needed
5329 check_ldflags -Wl,-z,noexecstack
5330
5331 if check_func dlopen; then
5332     ldl=
5333 elif check_func dlopen -ldl; then
5334     ldl=-ldl
5335 fi
5336
5337 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5338 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5339 frei0r_filter_extralibs='$ldl'
5340 frei0r_src_filter_extralibs='$ldl'
5341 ladspa_filter_extralibs='$ldl'
5342 nvenc_encoder_extralibs='$ldl'
5343 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5344 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5345
5346 if ! disabled network; then
5347     check_func getaddrinfo $network_extralibs
5348     check_func inet_aton $network_extralibs
5349
5350     check_type netdb.h "struct addrinfo"
5351     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5352     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5353     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5354     check_type poll.h "struct pollfd"
5355     check_type netinet/sctp.h "struct sctp_event_subscribe"
5356     check_struct "sys/socket.h" "struct msghdr" msg_flags
5357     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5358     check_type netinet/in.h "struct sockaddr_in6"
5359     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5360     check_type "sys/types.h sys/socket.h" socklen_t
5361
5362     # Prefer arpa/inet.h over winsock2
5363     if check_header arpa/inet.h ; then
5364         check_func closesocket
5365     elif check_header winsock2.h ; then
5366         check_func_headers winsock2.h closesocket -lws2 &&
5367             network_extralibs="-lws2" ||
5368         { check_func_headers winsock2.h closesocket -lws2_32 &&
5369             network_extralibs="-lws2_32"; } || disable winsock2_h network
5370         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5371
5372         check_type ws2tcpip.h socklen_t
5373         check_type ws2tcpip.h "struct addrinfo"
5374         check_type ws2tcpip.h "struct group_source_req"
5375         check_type ws2tcpip.h "struct ip_mreq_source"
5376         check_type ws2tcpip.h "struct ipv6_mreq"
5377         check_type winsock2.h "struct pollfd"
5378         check_struct winsock2.h "struct sockaddr" sa_len
5379         check_type ws2tcpip.h "struct sockaddr_in6"
5380         check_type ws2tcpip.h "struct sockaddr_storage"
5381     else
5382         disable network
5383     fi
5384 fi
5385
5386 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5387 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5388 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5389 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5390 check_builtin sarestart signal.h "SA_RESTART"
5391 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5392 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5393 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5394 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5395
5396 case "$custom_allocator" in
5397     jemalloc)
5398         # jemalloc by default does not use a prefix
5399         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5400     ;;
5401     tcmalloc)
5402         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5403         malloc_prefix=tc_
5404     ;;
5405 esac
5406
5407 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5408 check_func  ${malloc_prefix}memalign            && enable memalign
5409 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5410
5411 check_func  access
5412 check_func  arc4random
5413 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5414 check_func  fcntl
5415 check_func  fork
5416 check_func  gethrtime
5417 check_func  getopt
5418 check_func  getrusage
5419 check_func  gettimeofday
5420 check_func  isatty
5421 check_func  mach_absolute_time
5422 check_func  mkstemp
5423 check_func  mmap
5424 check_func  mprotect
5425 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5426 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5427 check_func  sched_getaffinity
5428 check_func  setrlimit
5429 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5430 check_func  strerror_r
5431 check_func  sysconf
5432 check_func  sysctl
5433 check_func  usleep
5434
5435 check_func_headers conio.h kbhit
5436 check_func_headers io.h setmode
5437 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5438 check_func_headers stdlib.h getenv
5439 check_func_headers sys/stat.h lstat
5440
5441 check_func_headers windows.h CoTaskMemFree -lole32
5442 check_func_headers windows.h GetProcessAffinityMask
5443 check_func_headers windows.h GetProcessTimes
5444 check_func_headers windows.h GetSystemTimeAsFileTime
5445 check_func_headers windows.h MapViewOfFile
5446 check_func_headers windows.h PeekNamedPipe
5447 check_func_headers windows.h SetConsoleTextAttribute
5448 check_func_headers windows.h SetConsoleCtrlHandler
5449 check_func_headers windows.h Sleep
5450 check_func_headers windows.h VirtualAlloc
5451 check_struct windows.h "CONDITION_VARIABLE" Ptr
5452 check_func_headers glob.h glob
5453 enabled xlib &&
5454     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5455
5456 check_header AudioToolbox/AudioToolbox.h
5457 check_header direct.h
5458 check_header dirent.h
5459 check_header dlfcn.h
5460 check_header d3d11.h
5461 check_header dxva.h
5462 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5463 check_header io.h
5464 check_header libcrystalhd/libcrystalhd_if.h
5465 check_header mach/mach_time.h
5466 check_header malloc.h
5467 check_header net/udplite.h
5468 check_header poll.h
5469 check_header sys/mman.h
5470 check_header sys/param.h
5471 check_header sys/resource.h
5472 check_header sys/select.h
5473 check_header sys/time.h
5474 check_header sys/un.h
5475 check_header termios.h
5476 check_header unistd.h
5477 check_header valgrind/valgrind.h
5478 check_header vdpau/vdpau.h
5479 check_header vdpau/vdpau_x11.h
5480 check_header VideoDecodeAcceleration/VDADecoder.h
5481 check_header VideoToolbox/VideoToolbox.h
5482 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5483 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5484 check_header windows.h
5485 check_header X11/extensions/XvMClib.h
5486 check_header asm/types.h
5487
5488 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5489 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5490 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5491 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5492
5493 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5494
5495 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5496 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5497 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5498 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5499 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5500
5501 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5502 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5503 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5504 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5505 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5506 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5507
5508 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5509
5510 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5511
5512 if ! disabled w32threads && ! enabled pthreads; then
5513     check_func_headers "windows.h process.h" _beginthreadex &&
5514         enable w32threads || disable w32threads
5515     if ! enabled w32threads && enabled winrt; then
5516         check_func_headers "windows.h" CreateThread &&
5517             enable w32threads || disable w32threads
5518     fi
5519 fi
5520
5521 # check for some common methods of building with pthread support
5522 # do this before the optional library checks as some of them require pthreads
5523 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5524     enable pthreads
5525     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5526         add_cflags -pthread
5527         add_extralibs -pthread
5528     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5529         add_cflags -pthreads
5530         add_extralibs -pthreads
5531     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5532         add_cflags -ldl -pthread
5533         add_extralibs -ldl -pthread
5534     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5535         add_extralibs -lpthreadGC2
5536     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5537         :
5538     elif ! check_func pthread_join && ! check_func pthread_create; then
5539         disable pthreads
5540     fi
5541     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5542 fi
5543
5544
5545 if enabled pthreads; then
5546   check_func pthread_cancel
5547 fi
5548
5549 enabled pthreads &&
5550     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5551
5552 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5553 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5554 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5555
5556 check_lib math.h sin -lm && LIBM="-lm"
5557 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5558
5559 atan2f_args=2
5560 copysign_args=2
5561 hypot_args=2
5562 ldexpf_args=2
5563 powf_args=2
5564
5565 for func in $MATH_FUNCS; do
5566     eval check_mathfunc $func \${${func}_args:-1}
5567 done
5568
5569 for func in $COMPLEX_FUNCS; do
5570     eval check_complexfunc $func \${${func}_args:-1}
5571 done
5572
5573 # these are off by default, so fail if requested and not available
5574 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5575 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5576                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5577 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5578                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5579                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5580 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
5581                                die "ERROR: CUDA not found"; }
5582 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5583 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5584 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5585 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5586 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5587 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5588 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5589 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5590                                check_lib2 "dlfcn.h" dlopen -ldl; }
5591 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5592 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5593 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5594 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5595 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5596 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5597                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5598                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5599 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5600 enabled libebur128        && require ebur128 ebur128.h ebur128_relative_threshold -lebur128
5601 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5602 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5603                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5604                                  warn "using libfdk without pkg-config"; } }
5605 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"
5606 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5607 enabled fontconfig        && enable libfontconfig
5608 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5609 enabled libfreetype       && require_libfreetype
5610 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5611 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5612 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5613                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5614                                done || die "ERROR: libgsm not found"; }
5615 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5616 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5617 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5618 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5619 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5620 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5621 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5622 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5623 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5624 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5625                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5626                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5627                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5628 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5629 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5630                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5631                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5632                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5633                                die "ERROR: libopenjpeg not found"; }
5634 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5635 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5636 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5637 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5638 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5639 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5640 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5641                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5642 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5643 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5644 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5645 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5646 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5647 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5648 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5649                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5650                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5651 enabled libutvideo        && { require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++ &&
5652                                check_cpp_condition utvideo/utvideo.h "!defined(UTVIDEO_VERSION_MAJOR) || UTVIDEO_VERSION_MAJOR < 15 || UTVIDEO_VERSION_MAJOR == 15 && UTVIDEO_VERSION_MINOR < 4" ||
5653                                die "ERROR: libutvideo version must be <= 15.3.0."; }
5654 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5655 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5656 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5657 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5658
5659 enabled libvpx            && {
5660     enabled libvpx_vp8_decoder && {
5661         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5662             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5663                 die "ERROR: libvpx decoder version must be >=0.9.1";
5664     }
5665     enabled libvpx_vp8_encoder && {
5666         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5667             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5668                 die "ERROR: libvpx encoder version must be >=0.9.7";
5669     }
5670     enabled libvpx_vp9_decoder && {
5671         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5672             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5673                 disable libvpx_vp9_decoder;
5674     }
5675     enabled libvpx_vp9_encoder && {
5676         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5677             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5678                 disable libvpx_vp9_encoder;
5679     }
5680     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5681         die "libvpx enabled but no supported decoders found"
5682     fi
5683 }
5684
5685 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5686 enabled libwebp           && {
5687     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5688     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5689 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5690                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5691                                  warn "using libx264 without pkg-config"; } } &&
5692                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5693                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5694                              { check_cpp_condition x264.h "X264_MPEG2" &&
5695                                enable libx262; }
5696 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5697                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5698                                die "ERROR: libx265 version must be >= 68."; }
5699 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5700 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5701 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5702 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5703 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5704                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5705                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5706 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5707 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5708                                 { ! enabled cross_compile && {
5709                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5710                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5711                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5712                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5713                                die "ERROR: mmal not found"; }
5714 enabled mmal &&
5715     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5716      die "ERROR: mmal firmware headers too old")
5717
5718 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5719 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5720                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
5721                                die "ERROR: NVENC API version 5 or older is not supported"; } &&
5722                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5723 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5724                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5725                                die "ERROR: openal not found"; } &&
5726                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5727                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5728 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5729                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5730                                die "ERROR: opencl not found"; } &&
5731                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5732                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5733                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5734 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5735                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5736                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5737                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5738                                die "ERROR: opengl not found."
5739                              }
5740 enabled omx_rpi && enable omx
5741 enabled omx               && { check_header OMX_Core.h ||
5742                                 { ! enabled cross_compile && enabled omx_rpi && {
5743                                     add_cflags -isystem/opt/vc/include/IL ; }
5744                                 check_header OMX_Core.h ; } ||
5745                                die "ERROR: OpenMAX IL headers not found"; }
5746 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5747                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5748                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5749                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5750                                die "ERROR: openssl not found"; }
5751 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5752
5753 # libdc1394 check
5754 if enabled libdc1394; then
5755     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5756         enable libdc1394_2; } ||
5757     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5758         enable libdc1394_1; } ||
5759     die "ERROR: No version of libdc1394 found "
5760 fi
5761
5762 if enabled gcrypt; then
5763     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5764     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5765         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5766         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5767         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5768             die "ERROR: gcrypt not found"
5769         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5770     else
5771         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5772     fi
5773 fi
5774
5775 if ! disabled sdl; then
5776     SDL_CONFIG="${cross_prefix}sdl-config"
5777     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5778         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5779         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5780         enable sdl
5781     else
5782         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5783             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5784             sdl_libs=$("${SDL_CONFIG}" --libs)
5785             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5786             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5787             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5788             enable sdl
5789         elif enabled sdl ; then
5790             die "ERROR: SDL not found"
5791         else
5792             disable sdl
5793         fi
5794     fi
5795     if test $target_os = "mingw32"; then
5796         sdl_libs="$sdl_libs -mconsole"
5797     fi
5798 fi
5799 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5800
5801 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5802     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5803     enable securetransport; }
5804
5805 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5806                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5807
5808 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5809 enabled makeinfo \
5810     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5811     && enable makeinfo_html || disable makeinfo_html
5812 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5813 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5814 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5815 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5816
5817 check_header linux/fb.h
5818 check_header linux/videodev.h
5819 check_header linux/videodev2.h
5820 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5821
5822 check_header sys/videoio.h
5823 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5824
5825 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5826 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5827 # w32api 3.12 had it defined wrong
5828 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5829
5830 check_type "dshow.h" IBaseFilter
5831
5832 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5833 { check_header dev/bktr/ioctl_meteor.h &&
5834   check_header dev/bktr/ioctl_bt848.h; } ||
5835 { check_header machine/ioctl_meteor.h &&
5836   check_header machine/ioctl_bt848.h; } ||
5837 { check_header dev/video/meteor/ioctl_meteor.h &&
5838   check_header dev/video/bktr/ioctl_bt848.h; } ||
5839 check_header dev/ic/bt8xx.h
5840
5841 check_header sndio.h
5842 if check_struct sys/soundcard.h audio_buf_info bytes; then
5843     enable_safe sys/soundcard.h
5844 else
5845     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5846     #include <sys/soundcard.h>
5847     audio_buf_info abc;
5848 EOF
5849 fi
5850 check_header soundcard.h
5851
5852 enabled_any alsa_indev alsa_outdev &&
5853     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5854
5855 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5856     check_func jack_port_get_latency_range -ljack
5857
5858 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5859
5860 if enabled libcdio; then
5861     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5862     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5863     die "ERROR: No usable libcdio/cdparanoia found"
5864 fi
5865
5866 enabled xlib &&
5867     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5868
5869 if ! disabled libxcb; then
5870     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5871         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5872     } && disable x11grab && enable libxcb
5873
5874 if enabled libxcb; then
5875     disabled libxcb_shm || {
5876         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5877             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5878         } && check_header sys/shm.h && enable libxcb_shm; }
5879
5880     disabled libxcb_xfixes || {
5881         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5882             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5883         } && enable libxcb_xfixes; }
5884
5885     disabled libxcb_shape || {
5886         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5887             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5888         } && enable libxcb_shape; }
5889
5890     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5891     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5892 fi
5893 fi
5894
5895 if enabled x11grab; then
5896     enabled xlib || die "ERROR: Xlib not found"
5897     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5898     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5899 fi
5900
5901 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5902
5903 enabled dxva2api_h &&
5904     check_cc <<EOF && enable dxva2api_cobj
5905 #define _WIN32_WINNT 0x0600
5906 #define COBJMACROS
5907 #include <windows.h>
5908 #include <d3d9.h>
5909 #include <dxva2api.h>
5910 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5911 EOF
5912
5913 enabled vaapi &&
5914     check_lib va/va.h vaInitialize -lva ||
5915     disable vaapi
5916
5917 enabled vaapi &&
5918     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
5919     disable vaapi
5920
5921 if enabled vaapi ; then
5922     enabled xlib &&
5923     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5924     enable vaapi_x11
5925
5926     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
5927     enable vaapi_drm
5928 fi
5929
5930 enabled vdpau &&
5931     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5932     disable vdpau
5933
5934 enabled vdpau && enabled xlib &&
5935     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5936     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5937     enable vdpau_x11
5938
5939 # Funny iconv installations are not unusual, so check it after all flags have been set
5940 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5941
5942 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5943
5944 # add some useful compiler flags if supported
5945 check_cflags -Wdeclaration-after-statement
5946 check_cflags -Wall
5947 check_cflags -Wdisabled-optimization
5948 check_cflags -Wpointer-arith
5949 check_cflags -Wredundant-decls
5950 check_cflags -Wwrite-strings
5951 check_cflags -Wtype-limits
5952 check_cflags -Wundef
5953 check_cflags -Wmissing-prototypes
5954 check_cflags -Wno-pointer-to-int-cast
5955 check_cflags -Wstrict-prototypes
5956 check_cflags -Wempty-body
5957 enabled extra_warnings && check_cflags -Winline
5958 enabled extra_warnings && check_cflags -Wcast-qual
5959
5960 check_disable_warning(){
5961     warning_flag=-W${1#-Wno-}
5962     test_cflags $warning_flag && add_cflags $1
5963 }
5964
5965 check_disable_warning -Wno-parentheses
5966 check_disable_warning -Wno-switch
5967 check_disable_warning -Wno-format-zero-length
5968 check_disable_warning -Wno-pointer-sign
5969 check_disable_warning -Wno-unused-const-variable
5970
5971 # add some linker flags
5972 check_ldflags -Wl,--warn-common
5973 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5974 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5975 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5976 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5977
5978 # add some strip flags
5979 # -wN '..@*' is more selective than -x, but not available everywhere.
5980 check_stripflags -wN \'..@*\' || check_stripflags -x
5981
5982 enabled neon_clobber_test &&
5983     check_ldflags -Wl,--wrap,avcodec_open2              \
5984                   -Wl,--wrap,avcodec_decode_audio4      \
5985                   -Wl,--wrap,avcodec_decode_video2      \
5986                   -Wl,--wrap,avcodec_decode_subtitle2   \
5987                   -Wl,--wrap,avcodec_encode_audio2      \
5988                   -Wl,--wrap,avcodec_encode_video2      \
5989                   -Wl,--wrap,avcodec_encode_subtitle    \
5990                   -Wl,--wrap,swr_convert                \
5991                   -Wl,--wrap,avresample_convert ||
5992     disable neon_clobber_test
5993
5994 enabled xmm_clobber_test &&
5995     check_ldflags -Wl,--wrap,avcodec_open2              \
5996                   -Wl,--wrap,avcodec_decode_audio4      \
5997                   -Wl,--wrap,avcodec_decode_video2      \
5998                   -Wl,--wrap,avcodec_decode_subtitle2   \
5999                   -Wl,--wrap,avcodec_encode_audio2      \
6000                   -Wl,--wrap,avcodec_encode_video2      \
6001                   -Wl,--wrap,avcodec_encode_subtitle    \
6002                   -Wl,--wrap,swr_convert                \
6003                   -Wl,--wrap,avresample_convert         \
6004                   -Wl,--wrap,sws_scale ||
6005     disable xmm_clobber_test
6006
6007 echo "X { local: *; };" > $TMPV
6008 if test_ldflags -Wl,--version-script,$TMPV; then
6009     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
6010 elif test_ldflags -Wl,-M,$TMPV; then
6011     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
6012 fi
6013
6014 check_cc <<EOF && enable symver_asm_label
6015 void ff_foo(void) __asm__ ("av_foo@VERSION");
6016 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6017 EOF
6018     check_cc <<EOF && enable symver_gnu_asm
6019 __asm__(".symver ff_foo,av_foo@VERSION");
6020 void ff_foo(void) {}
6021 EOF
6022
6023 if [ -z "$optflags" ]; then
6024     if enabled small; then
6025         optflags=$cflags_size
6026     elif enabled optimizations; then
6027         optflags=$cflags_speed
6028     else
6029         optflags=$cflags_noopt
6030     fi
6031 fi
6032
6033 check_optflags(){
6034     check_cflags "$@"
6035     enabled lto && check_ldflags "$@"
6036 }
6037
6038
6039 if enabled lto; then
6040     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6041     check_cflags  -flto
6042     check_ldflags -flto $cpuflags
6043     disable inline_asm_direct_symbol_refs
6044 fi
6045
6046 check_optflags $optflags
6047 check_optflags -fno-math-errno
6048 check_optflags -fno-signed-zeros
6049
6050 enabled ftrapv && check_cflags -ftrapv
6051
6052 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6053 int x;
6054 EOF
6055
6056
6057 if enabled icc; then
6058     # Just warnings, no remarks
6059     check_cflags -w1
6060     # -wd: Disable following warnings
6061     # 144, 167, 556: -Wno-pointer-sign
6062     # 188: enumerated type mixed with another type
6063     # 1292: attribute "foo" ignored
6064     # 1419: external declaration in primary source file
6065     # 10006: ignoring unknown option -fno-signed-zeros
6066     # 10148: ignoring unknown option -Wno-parentheses
6067     # 10156: ignoring option '-W'; no argument required
6068     # 13200: No EMMS instruction before call to function
6069     # 13203: No EMMS instruction before return from function
6070     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6071     # 11030: Warning unknown option --as-needed
6072     # 10156: ignoring option '-export'; no argument required
6073     check_ldflags -wd10156,11030
6074     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6075     enable ebp_available
6076     # The test above does not test linking
6077     enabled lto && disable symver_asm_label
6078     if enabled x86_32; then
6079         icc_version=$($cc -dumpversion)
6080         test ${icc_version%%.*} -ge 11 &&
6081             check_cflags -falign-stack=maintain-16-byte ||
6082             disable aligned_stack
6083     fi
6084 elif enabled ccc; then
6085     # disable some annoying warnings
6086     add_cflags -msg_disable bitnotint
6087     add_cflags -msg_disable mixfuncvoid
6088     add_cflags -msg_disable nonstandcast
6089     add_cflags -msg_disable unsupieee
6090 elif enabled gcc; then
6091     case $gcc_basever in
6092         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
6093         4.*)                 check_optflags -fno-tree-vectorize ;;
6094         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
6095     esac
6096     check_cflags -Werror=format-security
6097     check_cflags -Werror=implicit-function-declaration
6098     check_cflags -Werror=missing-prototypes
6099     check_cflags -Werror=return-type
6100     check_cflags -Werror=vla
6101     check_cflags -Wformat
6102     check_cflags -fdiagnostics-color=auto
6103     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6104 elif enabled llvm_gcc; then
6105     check_cflags -mllvm -stack-alignment=16
6106 elif enabled clang; then
6107     check_cflags -mllvm -stack-alignment=16
6108     check_cflags -Qunused-arguments
6109     check_cflags -Werror=implicit-function-declaration
6110     check_cflags -Werror=missing-prototypes
6111     check_cflags -Werror=return-type
6112 elif enabled cparser; then
6113     add_cflags -Wno-missing-variable-declarations
6114     add_cflags -Wno-empty-statement
6115 elif enabled armcc; then
6116     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6117     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6118     # 2523: use of inline assembly is deprecated
6119     add_cflags -W${armcc_opt},--diag_suppress=2523
6120     add_cflags -W${armcc_opt},--diag_suppress=1207
6121     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6122     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6123     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6124     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6125 elif enabled tms470; then
6126     add_cflags -pds=824 -pds=837
6127     disable inline_asm
6128 elif enabled pathscale; then
6129     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6130 elif enabled_any msvc icl; then
6131     enabled x86_32 && disable aligned_stack
6132     enabled_all x86_32 debug && add_cflags -Oy-
6133     enabled debug && add_ldflags -debug
6134     enable pragma_deprecated
6135     if enabled icl; then
6136         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6137         # (correctly) on icl 13.x.
6138         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6139             add_cflags -Qansi-alias
6140         # Some inline asm is not compilable in debug
6141         if enabled debug; then
6142             disable ebp_available
6143             disable ebx_available
6144         fi
6145     fi
6146     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6147     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6148     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6149     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6150     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6151     # MSVC 2013 and newer can handle it fine.
6152     # If this declspec fails, force including stdlib.h before the restrict redefinition
6153     # happens in config.h.
6154     if [ $_restrict != restrict ]; then
6155         check_cc <<EOF || add_cflags -FIstdlib.h
6156 __declspec($_restrict) void* foo(int);
6157 EOF
6158     fi
6159     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6160 fi
6161
6162 for pfx in "" host_; do
6163     varname=${pfx%_}cc_type
6164     eval "type=\$$varname"
6165     if [ $type = "msvc" ]; then
6166         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6167 static inline int foo(int a) { return a; }
6168 EOF
6169     fi
6170 done
6171
6172 case $as_type in
6173     clang)
6174         add_asflags -Qunused-arguments
6175     ;;
6176 esac
6177
6178 case $ld_type in
6179     clang)
6180         check_ldflags -Qunused-arguments
6181     ;;
6182 esac
6183
6184 case $target_os in
6185     osf1)
6186         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6187     ;;
6188     plan9)
6189         add_cppflags -Dmain=plan9_main
6190     ;;
6191 esac
6192
6193 enable frame_thread_encoder
6194
6195 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6196
6197 check_deps $CONFIG_LIST       \
6198            $CONFIG_EXTRA      \
6199            $HAVE_LIST         \
6200            $ALL_COMPONENTS    \
6201
6202 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"
6203
6204
6205 if test $target_os = "haiku"; then
6206     disable memalign
6207     disable posix_memalign
6208 fi
6209
6210 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6211     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6212     enable dxva2_lib
6213
6214 ! enabled_any memalign posix_memalign aligned_malloc &&
6215     enabled simd_align_16 && enable memalign_hack
6216
6217 # add_dep lib dep
6218 # -> enable ${lib}_deps_${dep}
6219 # -> add $dep to ${lib}_deps only once
6220 add_dep() {
6221     lib=$1
6222     dep=$2
6223     enabled "${lib}_deps_${dep}" && return 0
6224     enable  "${lib}_deps_${dep}"
6225     prepend "${lib}_deps" $dep
6226 }
6227
6228 # merge deps lib components
6229 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6230 merge_deps() {
6231     lib=$1
6232     shift
6233     for comp in $*; do
6234         enabled $comp || continue
6235         eval "dep=\"\$${comp}_deps\""
6236         for d in $dep; do
6237             add_dep $lib $d
6238         done
6239     done
6240 }
6241
6242 merge_deps libavfilter $FILTER_LIST
6243
6244 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6245
6246 for thread in $THREADS_LIST; do
6247     if enabled $thread; then
6248         test -n "$thread_type" &&
6249             die "ERROR: Only one thread type must be selected." ||
6250             thread_type="$thread"
6251     fi
6252 done
6253
6254 enabled zlib && add_cppflags -DZLIB_CONST
6255
6256 # conditional library dependencies, in linking order
6257 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6258 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6259 enabled aresample_filter    && prepend avfilter_deps "swresample"
6260 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6261 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6262 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6263 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6264 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6265 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6266 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6267 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6268 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6269 enabled pan_filter          && prepend avfilter_deps "swresample"
6270 enabled pp_filter           && prepend avfilter_deps "postproc"
6271 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6272 enabled resample_filter && prepend avfilter_deps "avresample"
6273 enabled sab_filter          && prepend avfilter_deps "swscale"
6274 enabled scale_filter    && prepend avfilter_deps "swscale"
6275 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6276 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6277 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6278 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6279 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6280 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6281 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6282 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6283 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6284
6285 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6286
6287 enabled opus_decoder    && prepend avcodec_deps "swresample"
6288
6289 expand_deps(){
6290     lib_deps=${1}_deps
6291     eval "deps=\$$lib_deps"
6292     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6293     unique $lib_deps
6294 }
6295
6296 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6297 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6298
6299 map 'expand_deps $v' $LIBRARY_LIST
6300
6301 echo "install prefix            $prefix"
6302 echo "source path               $source_path"
6303 echo "C compiler                $cc"
6304 echo "C library                 $libc_type"
6305 if test "$host_cc" != "$cc"; then
6306     echo "host C compiler           $host_cc"
6307     echo "host C library            $host_libc_type"
6308 fi
6309 echo "ARCH                      $arch ($cpu)"
6310 if test "$build_suffix" != ""; then
6311     echo "build suffix              $build_suffix"
6312 fi
6313 if test "$progs_suffix" != ""; then
6314     echo "progs suffix              $progs_suffix"
6315 fi
6316 if test "$extra_version" != ""; then
6317     echo "version string suffix     $extra_version"
6318 fi
6319 echo "big-endian                ${bigendian-no}"
6320 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6321 if enabled x86; then
6322     echo "${yasmexe}                      ${yasm-no}"
6323     echo "MMX enabled               ${mmx-no}"
6324     echo "MMXEXT enabled            ${mmxext-no}"
6325     echo "3DNow! enabled            ${amd3dnow-no}"
6326     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6327     echo "SSE enabled               ${sse-no}"
6328     echo "SSSE3 enabled             ${ssse3-no}"
6329     echo "AESNI enabled             ${aesni-no}"
6330     echo "AVX enabled               ${avx-no}"
6331     echo "XOP enabled               ${xop-no}"
6332     echo "FMA3 enabled              ${fma3-no}"
6333     echo "FMA4 enabled              ${fma4-no}"
6334     echo "i686 features enabled     ${i686-no}"
6335     echo "CMOV is fast              ${fast_cmov-no}"
6336     echo "EBX available             ${ebx_available-no}"
6337     echo "EBP available             ${ebp_available-no}"
6338 fi
6339 if enabled aarch64; then
6340     echo "NEON enabled              ${neon-no}"
6341     echo "VFP enabled               ${vfp-no}"
6342 fi
6343 if enabled arm; then
6344     echo "ARMv5TE enabled           ${armv5te-no}"
6345     echo "ARMv6 enabled             ${armv6-no}"
6346     echo "ARMv6T2 enabled           ${armv6t2-no}"
6347     echo "VFP enabled               ${vfp-no}"
6348     echo "NEON enabled              ${neon-no}"
6349     echo "THUMB enabled             ${thumb-no}"
6350 fi
6351 if enabled mips; then
6352     echo "MIPS FPU enabled          ${mipsfpu-no}"
6353     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6354     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6355     echo "MIPS MSA enabled          ${msa-no}"
6356     echo "LOONGSON MMI enabled      ${mmi-no}"
6357 fi
6358 if enabled ppc; then
6359     echo "AltiVec enabled           ${altivec-no}"
6360     echo "VSX enabled               ${vsx-no}"
6361     echo "POWER8 enabled            ${power8-no}"
6362     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6363     echo "dcbzl available           ${dcbzl-no}"
6364 fi
6365 echo "debug symbols             ${debug-no}"
6366 echo "strip symbols             ${stripping-no}"
6367 echo "optimize for size         ${small-no}"
6368 echo "optimizations             ${optimizations-no}"
6369 echo "static                    ${static-no}"
6370 echo "shared                    ${shared-no}"
6371 echo "postprocessing support    ${postproc-no}"
6372 echo "new filter support        ${avfilter-no}"
6373 echo "network support           ${network-no}"
6374 echo "threading support         ${thread_type-no}"
6375 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6376 echo "SDL support               ${sdl-no}"
6377 echo "opencl enabled            ${opencl-no}"
6378 echo "JNI support               ${jni-no}"
6379 echo "texi2html enabled         ${texi2html-no}"
6380 echo "perl enabled              ${perl-no}"
6381 echo "pod2man enabled           ${pod2man-no}"
6382 echo "makeinfo enabled          ${makeinfo-no}"
6383 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6384 test -n "$random_seed" &&
6385     echo "random seed               ${random_seed}"
6386 echo
6387
6388 echo "Enabled programs:"
6389 print_enabled '' $PROGRAM_LIST | print_in_columns
6390 echo
6391
6392 echo "External libraries:"
6393 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6394 echo
6395
6396 echo "Libraries:"
6397 print_enabled '' $LIBRARY_LIST | print_in_columns
6398 echo
6399
6400 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6401     echo "Enabled ${type}s:"
6402     eval list=\$$(toupper $type)_LIST
6403     print_enabled '_*' $list | print_in_columns
6404     echo
6405 done
6406
6407 echo "Enabled Hardware-accelerated codecs:"
6408 print_enabled '' $HW_CODECS_LIST | print_in_columns
6409 echo
6410
6411 license="LGPL version 2.1 or later"
6412 if enabled nonfree; then
6413     license="nonfree and unredistributable"
6414 elif enabled gplv3; then
6415     license="GPL version 3 or later"
6416 elif enabled lgplv3; then
6417     license="LGPL version 3 or later"
6418 elif enabled gpl; then
6419     license="GPL version 2 or later"
6420 fi
6421
6422 echo "License: $license"
6423
6424 echo "Creating config.mak, config.h, and doc/config.texi..."
6425
6426 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6427
6428 enabled stripping || strip="echo skipping strip"
6429
6430 config_files="$TMPH config.mak doc/config.texi"
6431
6432 cat > config.mak <<EOF
6433 # Automatically generated by configure - do not modify!
6434 ifndef FFMPEG_CONFIG_MAK
6435 FFMPEG_CONFIG_MAK=1
6436 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6437 prefix=$prefix
6438 LIBDIR=\$(DESTDIR)$libdir
6439 SHLIBDIR=\$(DESTDIR)$shlibdir
6440 INCDIR=\$(DESTDIR)$incdir
6441 BINDIR=\$(DESTDIR)$bindir
6442 DATADIR=\$(DESTDIR)$datadir
6443 DOCDIR=\$(DESTDIR)$docdir
6444 MANDIR=\$(DESTDIR)$mandir
6445 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6446 INSTALL_NAME_DIR=$install_name_dir
6447 SRC_PATH=$source_path
6448 SRC_LINK=$source_link
6449 ifndef MAIN_MAKEFILE
6450 SRC_PATH:=\$(SRC_PATH:.%=..%)
6451 endif
6452 CC_IDENT=$cc_ident
6453 ARCH=$arch
6454 INTRINSICS=$intrinsics
6455 CC=$cc
6456 CXX=$cxx
6457 AS=$as
6458 OBJCC=$objcc
6459 LD=$ld
6460 DEPCC=$dep_cc
6461 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6462 DEPAS=$as
6463 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6464 YASM=$yasmexe
6465 DEPYASM=$yasmexe
6466 AR=$ar
6467 ARFLAGS=$arflags
6468 AR_O=$ar_o
6469 RANLIB=$ranlib
6470 STRIP=$strip
6471 CP=cp -p
6472 LN_S=$ln_s
6473 CPPFLAGS=$CPPFLAGS
6474 CFLAGS=$CFLAGS
6475 CXXFLAGS=$CXXFLAGS
6476 OBJCFLAGS=$OBJCFLAGS
6477 ASFLAGS=$ASFLAGS
6478 AS_C=$AS_C
6479 AS_O=$AS_O
6480 OBJCC_C=$OBJCC_C
6481 OBJCC_E=$OBJCC_E
6482 OBJCC_O=$OBJCC_O
6483 CC_C=$CC_C
6484 CC_E=$CC_E
6485 CC_O=$CC_O
6486 CXX_C=$CXX_C
6487 CXX_O=$CXX_O
6488 LD_O=$LD_O
6489 LD_LIB=$LD_LIB
6490 LD_PATH=$LD_PATH
6491 DLLTOOL=$dlltool
6492 WINDRES=$windres
6493 DEPWINDRES=$dep_cc
6494 DOXYGEN=$doxygen
6495 LDFLAGS=$LDFLAGS
6496 LDEXEFLAGS=$LDEXEFLAGS
6497 LDLIBFLAGS=$LDLIBFLAGS
6498 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6499 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6500 YASMFLAGS=$YASMFLAGS
6501 BUILDSUF=$build_suffix
6502 PROGSSUF=$progs_suffix
6503 FULLNAME=$FULLNAME
6504 LIBPREF=$LIBPREF
6505 LIBSUF=$LIBSUF
6506 LIBNAME=$LIBNAME
6507 SLIBPREF=$SLIBPREF
6508 SLIBSUF=$SLIBSUF
6509 EXESUF=$EXESUF
6510 EXTRA_VERSION=$extra_version
6511 CCDEP=$CCDEP
6512 CXXDEP=$CXXDEP
6513 CCDEP_FLAGS=$CCDEP_FLAGS
6514 ASDEP=$ASDEP
6515 ASDEP_FLAGS=$ASDEP_FLAGS
6516 CC_DEPFLAGS=$CC_DEPFLAGS
6517 AS_DEPFLAGS=$AS_DEPFLAGS
6518 HOSTCC=$host_cc
6519 HOSTLD=$host_ld
6520 HOSTCFLAGS=$host_cflags
6521 HOSTCPPFLAGS=$host_cppflags
6522 HOSTEXESUF=$HOSTEXESUF
6523 HOSTLDFLAGS=$host_ldflags
6524 HOSTLIBS=$host_libs
6525 DEPHOSTCC=$host_cc
6526 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6527 HOSTCCDEP=$HOSTCCDEP
6528 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6529 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6530 HOSTCC_C=$HOSTCC_C
6531 HOSTCC_O=$HOSTCC_O
6532 HOSTLD_O=$HOSTLD_O
6533 TARGET_EXEC=$target_exec $target_exec_args
6534 TARGET_PATH=$target_path
6535 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6536 CFLAGS-ffplay=$sdl_cflags
6537 ZLIB=$($ldflags_filter -lz)
6538 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6539 EXTRALIBS=$extralibs
6540 COMPAT_OBJS=$compat_objs
6541 EXEOBJS=$exeobjs
6542 INSTALL=$install
6543 LIBTARGET=${LIBTARGET}
6544 SLIBNAME=${SLIBNAME}
6545 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6546 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6547 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6548 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6549 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6550 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6551 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6552 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6553 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6554 NOREDZONE_FLAGS=$noredzone_flags
6555 EOF
6556
6557 get_version(){
6558     lcname=lib${1}
6559     name=$(toupper $lcname)
6560     file=$source_path/$lcname/version.h
6561     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6562     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6563     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6564     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6565     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6566     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6567 }
6568
6569 map 'get_version $v' $LIBRARY_LIST
6570
6571 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6572
6573 print_program_libs(){
6574     eval "program_libs=\$${1}_libs"
6575     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6576 }
6577
6578 map 'print_program_libs $v' $PROGRAM_LIST
6579
6580 cat > $TMPH <<EOF
6581 /* Automatically generated by configure - do not modify! */
6582 #ifndef FFMPEG_CONFIG_H
6583 #define FFMPEG_CONFIG_H
6584 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6585 #define FFMPEG_LICENSE "$(c_escape $license)"
6586 #define CONFIG_THIS_YEAR 2016
6587 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6588 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6589 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6590 #define av_restrict $_restrict
6591 #define EXTERN_PREFIX "${extern_prefix}"
6592 #define EXTERN_ASM ${extern_prefix}
6593 #define BUILDSUF "$build_suffix"
6594 #define SLIBSUF "$SLIBSUF"
6595 #define HAVE_MMX2 HAVE_MMXEXT
6596 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6597 EOF
6598
6599 test -n "$assert_level" &&
6600     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6601
6602 test -n "$malloc_prefix" &&
6603     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6604
6605 if enabled yasm; then
6606     append config_files $TMPASM
6607     printf '' >$TMPASM
6608 fi
6609
6610 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6611
6612
6613 mkdir -p doc
6614 mkdir -p tests
6615 mkdir -p tests/api
6616 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6617
6618 print_config ARCH_   "$config_files" $ARCH_LIST
6619 print_config HAVE_   "$config_files" $HAVE_LIST
6620 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6621                                      $CONFIG_EXTRA      \
6622                                      $ALL_COMPONENTS    \
6623
6624 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6625 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6626
6627 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6628 cp_if_changed $TMPH config.h
6629 touch .config
6630
6631 enabled yasm && cp_if_changed $TMPASM config.asm
6632
6633 cat > $TMPH <<EOF
6634 /* Generated by ffconf */
6635 #ifndef AVUTIL_AVCONFIG_H
6636 #define AVUTIL_AVCONFIG_H
6637 EOF
6638
6639 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6640
6641 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6642
6643 cp_if_changed $TMPH libavutil/avconfig.h
6644
6645 if test -n "$WARNINGS"; then
6646     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6647     enabled fatal_warnings && exit 1
6648 fi
6649
6650 # generate the lists of enabled components
6651 print_enabled_components(){
6652     file=$1
6653     struct_name=$2
6654     name=$3
6655     shift 3
6656     echo "static const $struct_name *$name[] = {" > $TMPH
6657     for c in $*; do
6658         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6659     done
6660     echo "    NULL };" >> $TMPH
6661     cp_if_changed $TMPH $file
6662 }
6663
6664 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6665 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6666
6667 # build pkg-config files
6668
6669 lib_version(){
6670     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6671 }
6672
6673 pkgconfig_generate(){
6674     name=$1
6675     shortname=${name#lib}${build_suffix}
6676     comment=$2
6677     version=$3
6678     libs=$4
6679     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6680     requires=${requires%, }
6681     enabled ${name#lib} || return 0
6682     mkdir -p $name
6683     cat <<EOF > $name/$name${build_suffix}.pc
6684 prefix=$prefix
6685 exec_prefix=\${prefix}
6686 libdir=$libdir
6687 includedir=$incdir
6688
6689 Name: $name
6690 Description: $comment
6691 Version: $version
6692 Requires: $(enabled shared || echo $requires)
6693 Requires.private: $(enabled shared && echo $requires)
6694 Conflicts:
6695 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6696 Libs.private: $(enabled shared && echo $libs)
6697 Cflags: -I\${includedir}
6698 EOF
6699
6700 mkdir -p doc/examples/pc-uninstalled
6701 includedir=${source_path}
6702 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6703     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6704 prefix=
6705 exec_prefix=
6706 libdir=\${pcfiledir}/../../../$name
6707 includedir=${includedir}
6708
6709 Name: $name
6710 Description: $comment
6711 Version: $version
6712 Requires: $requires
6713 Conflicts:
6714 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6715 Cflags: -I\${includedir}
6716 EOF
6717 }
6718
6719 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6720 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6721 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6722 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6723 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6724 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6725 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6726 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6727 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"