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
  95 Licensing options:
  96   --enable-gpl             allow use of GPL code, the resulting libs
  97                            and binaries will be under GPL [no]
  98   --enable-version3        upgrade (L)GPL to version 3 [no]
  99   --enable-nonfree         allow use of nonfree code, the resulting libs
 100                            and binaries will be unredistributable [no]
 101
 102 Configuration options:
 103   --disable-static         do not build static libraries [no]
 104   --enable-shared          build shared libraries [no]
 105   --enable-small           optimize for size instead of speed
 106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 107   --enable-gray            enable full grayscale support (slower color)
 108   --disable-swscale-alpha  disable alpha channel support in swscale
 109   --disable-all            disable building components, libraries and programs
 110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Hardware accelerators:
 152   --disable-d3d11va        disable D3D11VA code [autodetect]
 153   --disable-dxva2          disable DXVA2 code [autodetect]
 154   --disable-vaapi          disable VAAPI code [autodetect]
 155   --disable-vda            disable VDA code [autodetect]
 156   --disable-vdpau          disable VDPAU code [autodetect]
 157   --enable-videotoolbox    enable VideoToolbox code [autodetect]
 158
 159 Individual component options:
 160   --disable-everything     disable all components listed below
 161   --disable-encoder=NAME   disable encoder NAME
 162   --enable-encoder=NAME    enable encoder NAME
 163   --disable-encoders       disable all encoders
 164   --disable-decoder=NAME   disable decoder NAME
 165   --enable-decoder=NAME    enable decoder NAME
 166   --disable-decoders       disable all decoders
 167   --disable-hwaccel=NAME   disable hwaccel NAME
 168   --enable-hwaccel=NAME    enable hwaccel NAME
 169   --disable-hwaccels       disable all hwaccels
 170   --disable-muxer=NAME     disable muxer NAME
 171   --enable-muxer=NAME      enable muxer NAME
 172   --disable-muxers         disable all muxers
 173   --disable-demuxer=NAME   disable demuxer NAME
 174   --enable-demuxer=NAME    enable demuxer NAME
 175   --disable-demuxers       disable all demuxers
 176   --enable-parser=NAME     enable parser NAME
 177   --disable-parser=NAME    disable parser NAME
 178   --disable-parsers        disable all parsers
 179   --enable-bsf=NAME        enable bitstream filter NAME
 180   --disable-bsf=NAME       disable bitstream filter NAME
 181   --disable-bsfs           disable all bitstream filters
 182   --enable-protocol=NAME   enable protocol NAME
 183   --disable-protocol=NAME  disable protocol NAME
 184   --disable-protocols      disable all protocols
 185   --enable-indev=NAME      enable input device NAME
 186   --disable-indev=NAME     disable input device NAME
 187   --disable-indevs         disable input devices
 188   --enable-outdev=NAME     enable output device NAME
 189   --disable-outdev=NAME    disable output device NAME
 190   --disable-outdevs        disable output devices
 191   --disable-devices        disable all devices
 192   --enable-filter=NAME     enable filter NAME
 193   --disable-filter=NAME    disable filter NAME
 194   --disable-filters        disable all filters
 195
 196 External library support:
 197   --enable-avisynth        enable reading of AviSynth script files [no]
 198   --disable-bzlib          disable bzlib [autodetect]
 199   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 201   --enable-frei0r          enable frei0r video filtering [no]
 202   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 203                            if openssl, librtmp or gmp is not used [no]
 204   --enable-gmp             enable gmp, needed for rtmp(t)e support
 205                            if openssl or librtmp is not used [no]
 206   --enable-gnutls          enable gnutls, needed for https support
 207                            if openssl is not used [no]
 208   --disable-iconv          disable iconv [autodetect]
 209   --enable-ladspa          enable LADSPA audio filtering [no]
 210   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 211   --enable-libass          enable libass subtitles rendering,
 212                            needed for subtitles and ass filter [no]
 213   --enable-libbluray       enable BluRay reading using libbluray [no]
 214   --enable-libbs2b         enable bs2b DSP library [no]
 215   --enable-libcaca         enable textual display using libcaca [no]
 216   --enable-libcelt         enable CELT decoding via libcelt [no]
 217   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 218   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 219                            and libraw1394 [no]
 220   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 221   --enable-libfaac         enable AAC encoding via libfaac [no]
 222   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 223   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 224   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 225   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 226   --enable-libgme          enable Game Music Emu via libgme [no]
 227   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 228   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 229   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 230   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 231   --enable-libmfx          enable HW acceleration through libmfx
 232   --enable-libmodplug      enable ModPlug via libmodplug [no]
 233   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 234   --enable-libnut          enable NUT (de)muxing via libnut,
 235                            native (de)muxer exists [no]
 236   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 237   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 238   --enable-libopencv       enable video filtering via libopencv [no]
 239   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 240   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 241   --enable-libopus         enable Opus de/encoding via libopus [no]
 242   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 243   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 244   --enable-libquvi         enable quvi input via libquvi [no]
 245   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 246   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 247   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 248   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 249   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 250   --enable-libsoxr         enable Include libsoxr resampling [no]
 251   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 252   --enable-libssh          enable SFTP protocol via libssh [no]
 253   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 254   --enable-libtheora       enable Theora encoding via libtheora [no]
 255   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 256   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 258   --enable-libvidstab      enable video stabilization using vid.stab [no]
 259   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 260   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 261   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 262                            native implementation exists [no]
 263   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 264   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 265   --enable-libwebp         enable WebP encoding via libwebp [no]
 266   --enable-libx264         enable H.264 encoding via x264 [no]
 267   --enable-libx265         enable HEVC encoding via x265 [no]
 268   --enable-libxavs         enable AVS encoding via xavs [no]
 269   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 270   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 271   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 272   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 273   --enable-libxvid         enable Xvid encoding via xvidcore,
 274                            native MPEG-4/Xvid encoder exists [no]
 275   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 276   --enable-libzmq          enable message passing via libzmq [no]
 277   --enable-libzvbi         enable teletext support via libzvbi [no]
 278   --disable-lzma           disable lzma [autodetect]
 279   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 280   --enable-mmal            enable decoding via MMAL [no]
 281   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 282   --enable-nvenc           enable NVIDIA NVENC support [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl            disable sdl [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --enable-x11grab         enable X11 grabbing (legacy) [no]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297 Toolchain options:
 298   --arch=ARCH              select architecture [$arch]
 299   --cpu=CPU                select the minimum required CPU (affects
 300                            instruction selection, may crash on older CPUs)
 301   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 302   --progs-suffix=SUFFIX    program name suffix []
 303   --enable-cross-compile   assume a cross-compiler is used
 304   --sysroot=PATH           root of cross-build tree
 305   --sysinclude=PATH        location of cross-build system headers
 306   --target-os=OS           compiler targets OS [$target_os]
 307   --target-exec=CMD        command to run executables on target
 308   --target-path=DIR        path to view of build directory on target
 309   --target-samples=DIR     path to samples directory on target
 310   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 311   --toolchain=NAME         set tool defaults according to NAME
 312   --nm=NM                  use nm tool NM [$nm_default]
 313   --ar=AR                  use archive tool AR [$ar_default]
 314   --as=AS                  use assembler AS [$as_default]
 315   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 316   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 317   --cc=CC                  use C compiler CC [$cc_default]
 318   --cxx=CXX                use C compiler CXX [$cxx_default]
 319   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 320   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 321   --ld=LD                  use linker LD [$ld_default]
 322   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 323   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 324   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 325   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 326   --host-cc=HOSTCC         use host C compiler HOSTCC
 327   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 328   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 329   --host-ld=HOSTLD         use host linker HOSTLD
 330   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 331   --host-libs=HLIBS        use libs HLIBS when linking for host
 332   --host-os=OS             compiler host OS [$target_os]
 333   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 334   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 335   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 336   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 337   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 338   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 339   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 340   --extra-version=STRING   version string suffix []
 341   --optflags=OPTFLAGS      override optimization-related compiler flags
 342   --build-suffix=SUFFIX    library name suffix []
 343   --enable-pic             build position-independent code
 344   --enable-thumb           compile for Thumb instruction set
 345   --enable-lto             use link-time optimization
 346   --env="ENV=override"     override the environment variables
 347
 348 Advanced options (experts only):
 349   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 350   --custom-allocator=NAME  use a supported custom allocator
 351   --disable-symver         disable symbol versioning
 352   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 353   --disable-safe-bitstream-reader
 354                            disable buffer boundary checking in bitreaders
 355                            (faster, but may crash)
 356   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 357   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 358
 359 Optimization options (experts only):
 360   --disable-asm            disable all assembly optimizations
 361   --disable-altivec        disable AltiVec optimizations
 362   --disable-vsx            disable VSX optimizations
 363   --disable-power8         disable POWER8 optimizations
 364   --disable-amd3dnow       disable 3DNow! optimizations
 365   --disable-amd3dnowext    disable 3DNow! extended optimizations
 366   --disable-mmx            disable MMX optimizations
 367   --disable-mmxext         disable MMXEXT optimizations
 368   --disable-sse            disable SSE optimizations
 369   --disable-sse2           disable SSE2 optimizations
 370   --disable-sse3           disable SSE3 optimizations
 371   --disable-ssse3          disable SSSE3 optimizations
 372   --disable-sse4           disable SSE4 optimizations
 373   --disable-sse42          disable SSE4.2 optimizations
 374   --disable-avx            disable AVX optimizations
 375   --disable-xop            disable XOP optimizations
 376   --disable-fma3           disable FMA3 optimizations
 377   --disable-fma4           disable FMA4 optimizations
 378   --disable-avx2           disable AVX2 optimizations
 379   --disable-aesni          disable AESNI optimizations
 380   --disable-armv5te        disable armv5te optimizations
 381   --disable-armv6          disable armv6 optimizations
 382   --disable-armv6t2        disable armv6t2 optimizations
 383   --disable-vfp            disable VFP optimizations
 384   --disable-neon           disable NEON optimizations
 385   --disable-inline-asm     disable use of inline assembly
 386   --disable-yasm           disable use of nasm/yasm assembly
 387   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 388   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 389   --disable-msa            disable MSA optimizations
 390   --disable-mipsfpu        disable floating point MIPS optimizations
 391   --disable-mmi            disable Loongson SIMD optimizations
 392   --disable-fast-unaligned consider unaligned accesses slow
 393
 394 Developer options (useful when working on FFmpeg itself):
 395   --disable-debug          disable debugging symbols
 396   --enable-debug=LEVEL     set the debug level [$debuglevel]
 397   --disable-optimizations  disable compiler optimizations
 398   --enable-extra-warnings  enable more compiler warnings
 399   --disable-stripping      disable stripping of executables and shared libraries
 400   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 401                            2 causes a slowdown at runtime.
 402   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 403   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 404                            leaks and errors, using the specified valgrind binary.
 405                            Cannot be combined with --target-exec
 406   --enable-ftrapv          Trap arithmetic overflows
 407   --samples=PATH           location of test samples for FATE, if not set use
 408                            \$FATE_SAMPLES at make invocation time.
 409   --enable-neon-clobber-test check NEON registers for clobbering (should be
 410                            used only for debugging purposes)
 411   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 412                            should be used only for debugging purposes)
 413   --enable-random          randomly enable/disable components
 414   --disable-random
 415   --enable-random=LIST     randomly enable/disable specific components or
 416   --disable-random=LIST    component groups. LIST is a comma-separated list
 417                            of NAME[:PROB] entries where NAME is a component
 418                            (group) and PROB the probability associated with
 419                            NAME (default 0.5).
 420   --random-seed=VALUE      seed value for --enable/disable-random
 421   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 422                            (only applies to --disable-optimizations builds)
 423
 424 NOTE: Object files are built at the place where configure is launched.
 425 EOF
 426   exit 0
 427 }
 428
 429 quotes='""'
 430 if test -t 1 && which tput >/dev/null 2>&1; then
 431     ncolors=$(tput colors)
 432     if test -n "$ncolors" && test $ncolors -ge 8; then
 433         bold_color=$(tput bold)
 434         warn_color=$(tput setaf 3)
 435         error_color=$(tput setaf 1)
 436         reset_color=$(tput sgr0)
 437     fi
 438     # 72 used instead of 80 since that's the default of pr
 439     ncols=$(tput cols)
 440 fi
 441 : ${ncols:=72}
 442
 443 log(){
 444     echo "$@" >> $logfile
 445 }
 446
 447 log_file(){
 448     log BEGIN $1
 449     pr -n -t $1 >> $logfile
 450     log END $1
 451 }
 452
 453 warn(){
 454     log "WARNING: $*"
 455     WARNINGS="${WARNINGS}WARNING: $*\n"
 456 }
 457
 458 die(){
 459     log "$@"
 460     echo "$error_color$bold_color$@$reset_color"
 461     cat <<EOF
 462
 463 If you think configure made a mistake, make sure you are using the latest
 464 version from Git.  If the latest version fails, report the problem to the
 465 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 466 EOF
 467     if disabled logging; then
 468         cat <<EOF
 469 Rerun configure with logging enabled (do not use --disable-logging), and
 470 include the log this produces with your report.
 471 EOF
 472     else
 473         cat <<EOF
 474 Include the log file "$logfile" produced by configure as this will help
 475 solve the problem.
 476 EOF
 477     fi
 478     exit 1
 479 }
 480
 481 # Avoid locale weirdness, besides we really just want to translate ASCII.
 482 toupper(){
 483     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 484 }
 485
 486 tolower(){
 487     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 488 }
 489
 490 c_escape(){
 491     echo "$*" | sed 's/["\\]/\\\0/g'
 492 }
 493
 494 sh_quote(){
 495     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 496     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 497     echo "$v"
 498 }
 499
 500 cleanws(){
 501     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 502 }
 503
 504 filter(){
 505     pat=$1
 506     shift
 507     for v; do
 508         eval "case $v in $pat) echo $v ;; esac"
 509     done
 510 }
 511
 512 filter_out(){
 513     pat=$1
 514     shift
 515     for v; do
 516         eval "case $v in $pat) ;; *) echo $v ;; esac"
 517     done
 518 }
 519
 520 map(){
 521     m=$1
 522     shift
 523     for v; do eval $m; done
 524 }
 525
 526 add_suffix(){
 527     suffix=$1
 528     shift
 529     for v; do echo ${v}${suffix}; done
 530 }
 531
 532 set_all(){
 533     value=$1
 534     shift
 535     for var in $*; do
 536         eval $var=$value
 537     done
 538 }
 539
 540 set_weak(){
 541     value=$1
 542     shift
 543     for var; do
 544         eval : \${$var:=$value}
 545     done
 546 }
 547
 548 sanitize_var_name(){
 549     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 550 }
 551
 552 set_safe(){
 553     var=$1
 554     shift
 555     eval $(sanitize_var_name "$var")='$*'
 556 }
 557
 558 get_safe(){
 559     eval echo \$$(sanitize_var_name "$1")
 560 }
 561
 562 pushvar(){
 563     for pvar in $*; do
 564         eval level=\${${pvar}_level:=0}
 565         eval ${pvar}_${level}="\$$pvar"
 566         eval ${pvar}_level=$(($level+1))
 567     done
 568 }
 569
 570 popvar(){
 571     for pvar in $*; do
 572         eval level=\${${pvar}_level:-0}
 573         test $level = 0 && continue
 574         eval level=$(($level-1))
 575         eval $pvar="\${${pvar}_${level}}"
 576         eval ${pvar}_level=$level
 577         eval unset ${pvar}_${level}
 578     done
 579 }
 580
 581 enable(){
 582     set_all yes $*
 583 }
 584
 585 disable(){
 586     set_all no $*
 587 }
 588
 589 enable_weak(){
 590     set_weak yes $*
 591 }
 592
 593 disable_weak(){
 594     set_weak no $*
 595 }
 596
 597 enable_safe(){
 598     for var; do
 599         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 600     done
 601 }
 602
 603 disable_safe(){
 604     for var; do
 605         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 606     done
 607 }
 608
 609 do_enable_deep(){
 610     for var; do
 611         enabled $var && continue
 612         eval sel="\$${var}_select"
 613         eval sgs="\$${var}_suggest"
 614         pushvar var sgs
 615         enable_deep $sel
 616         popvar sgs
 617         enable_deep_weak $sgs
 618         popvar var
 619     done
 620 }
 621
 622 enable_deep(){
 623     do_enable_deep $*
 624     enable $*
 625 }
 626
 627 enable_deep_weak(){
 628     for var; do
 629         disabled $var && continue
 630         pushvar var
 631         do_enable_deep $var
 632         popvar var
 633         enable_weak $var
 634     done
 635 }
 636
 637 enabled(){
 638     test "${1#!}" = "$1" && op='=' || op=!=
 639     eval test "x\$${1#!}" $op "xyes"
 640 }
 641
 642 disabled(){
 643     test "${1#!}" = "$1" && op='=' || op=!=
 644     eval test "x\$${1#!}" $op "xno"
 645 }
 646
 647 enabled_all(){
 648     for opt; do
 649         enabled $opt || return 1
 650     done
 651 }
 652
 653 disabled_all(){
 654     for opt; do
 655         disabled $opt || return 1
 656     done
 657 }
 658
 659 enabled_any(){
 660     for opt; do
 661         enabled $opt && return 0
 662     done
 663 }
 664
 665 disabled_any(){
 666     for opt; do
 667         disabled $opt && return 0
 668     done
 669     return 1
 670 }
 671
 672 set_default(){
 673     for opt; do
 674         eval : \${$opt:=\$${opt}_default}
 675     done
 676 }
 677
 678 is_in(){
 679     value=$1
 680     shift
 681     for var in $*; do
 682         [ $var = $value ] && return 0
 683     done
 684     return 1
 685 }
 686
 687 do_check_deps(){
 688     for cfg; do
 689         cfg="${cfg#!}"
 690         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 691         disabled ${cfg}_checking && continue
 692         enable ${cfg}_checking
 693         append allopts $cfg
 694
 695         eval dep_all="\$${cfg}_deps"
 696         eval dep_any="\$${cfg}_deps_any"
 697         eval dep_sel="\$${cfg}_select"
 698         eval dep_sgs="\$${cfg}_suggest"
 699         eval dep_ifa="\$${cfg}_if"
 700         eval dep_ifn="\$${cfg}_if_any"
 701
 702         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 703         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 704         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 705
 706         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 707         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 708         enabled_all  $dep_all || disable $cfg
 709         enabled_any  $dep_any || disable $cfg
 710         disabled_any $dep_sel && disable $cfg
 711
 712         if enabled $cfg; then
 713             enable_deep $dep_sel
 714             enable_deep_weak $dep_sgs
 715         fi
 716
 717         disable ${cfg}_checking
 718     done
 719 }
 720
 721 check_deps(){
 722     unset allopts
 723
 724     do_check_deps "$@"
 725
 726     for cfg in $allopts; do
 727         enabled $cfg || continue
 728         eval dep_extralibs="\$${cfg}_extralibs"
 729         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 730     done
 731 }
 732
 733 print_config(){
 734     pfx=$1
 735     files=$2
 736     shift 2
 737     map 'eval echo "$v \${$v:-no}"' "$@" |
 738     awk "BEGIN { split(\"$files\", files) }
 739         {
 740             c = \"$pfx\" toupper(\$1);
 741             v = \$2;
 742             sub(/yes/, 1, v);
 743             sub(/no/,  0, v);
 744             for (f in files) {
 745                 file = files[f];
 746                 if (file ~ /\\.h\$/) {
 747                     printf(\"#define %s %d\\n\", c, v) >>file;
 748                 } else if (file ~ /\\.asm\$/) {
 749                     printf(\"%%define %s %d\\n\", c, v) >>file;
 750                 } else if (file ~ /\\.mak\$/) {
 751                     n = -v ? \"\" : \"!\";
 752                     printf(\"%s%s=yes\\n\", n, c) >>file;
 753                 } else if (file ~ /\\.texi\$/) {
 754                     pre = -v ? \"\" : \"@c \";
 755                     yesno = \$2;
 756                     c2 = tolower(c);
 757                     gsub(/_/, \"-\", c2);
 758                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 759                 }
 760             }
 761         }"
 762 }
 763
 764 print_enabled(){
 765     suf=$1
 766     shift
 767     for v; do
 768         enabled $v && printf "%s\n" ${v%$suf};
 769     done
 770 }
 771
 772 append(){
 773     var=$1
 774     shift
 775     eval "$var=\"\$$var $*\""
 776 }
 777
 778 prepend(){
 779     var=$1
 780     shift
 781     eval "$var=\"$* \$$var\""
 782 }
 783
 784 unique(){
 785     var=$1
 786     uniq_list=""
 787     for tok in $(eval echo \$$var); do
 788         uniq_list="$(filter_out $tok $uniq_list) $tok"
 789     done
 790     eval "$var=\"${uniq_list}\""
 791 }
 792
 793 add_cppflags(){
 794     append CPPFLAGS "$@"
 795 }
 796
 797 add_cflags(){
 798     append CFLAGS $($cflags_filter "$@")
 799 }
 800
 801 add_cxxflags(){
 802     append CXXFLAGS $($cflags_filter "$@")
 803 }
 804
 805 add_asflags(){
 806     append ASFLAGS $($asflags_filter "$@")
 807 }
 808
 809 add_objcflags(){
 810     append OBJCFLAGS $($objcflags_filter "$@")
 811 }
 812
 813 add_ldflags(){
 814     append LDFLAGS $($ldflags_filter "$@")
 815 }
 816
 817 add_ldexeflags(){
 818     append LDEXEFLAGS $($ldflags_filter "$@")
 819 }
 820
 821 add_ldlibflags(){
 822     append LDLIBFLAGS $($ldflags_filter "$@")
 823 }
 824
 825 add_stripflags(){
 826     append ASMSTRIPFLAGS "$@"
 827 }
 828
 829 add_extralibs(){
 830     prepend extralibs $($ldflags_filter "$@")
 831 }
 832
 833 add_host_cppflags(){
 834     append host_cppflags "$@"
 835 }
 836
 837 add_host_cflags(){
 838     append host_cflags $($host_cflags_filter "$@")
 839 }
 840
 841 add_host_ldflags(){
 842     append host_ldflags $($host_ldflags_filter "$@")
 843 }
 844
 845 add_compat(){
 846     append compat_objs $1
 847     shift
 848     map 'add_cppflags -D$v' "$@"
 849 }
 850
 851 check_cmd(){
 852     log "$@"
 853     "$@" >> $logfile 2>&1
 854 }
 855
 856 check_stat(){
 857     log check_stat "$@"
 858     stat "$1" >> $logfile 2>&1
 859 }
 860
 861 cc_o(){
 862     eval printf '%s\\n' $CC_O
 863 }
 864
 865 cc_e(){
 866     eval printf '%s\\n' $CC_E
 867 }
 868
 869 check_cc(){
 870     log check_cc "$@"
 871     cat > $TMPC
 872     log_file $TMPC
 873     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 874 }
 875
 876 check_cxx(){
 877     log check_cxx "$@"
 878     cat > $TMPCPP
 879     log_file $TMPCPP
 880     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 881 }
 882
 883 check_objcc(){
 884     log check_objcc "$@"
 885     cat > $TMPM
 886     log_file $TMPM
 887     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 888 }
 889
 890 check_cpp(){
 891     log check_cpp "$@"
 892     cat > $TMPC
 893     log_file $TMPC
 894     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 895 }
 896
 897 as_o(){
 898     eval printf '%s\\n' $AS_O
 899 }
 900
 901 check_as(){
 902     log check_as "$@"
 903     cat > $TMPS
 904     log_file $TMPS
 905     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 906 }
 907
 908 check_inline_asm(){
 909     log check_inline_asm "$@"
 910     name="$1"
 911     code="$2"
 912     shift 2
 913     disable $name
 914     check_cc "$@" <<EOF && enable $name
 915 void foo(void){ __asm__ volatile($code); }
 916 EOF
 917 }
 918
 919 check_insn(){
 920     log check_insn "$@"
 921     check_inline_asm ${1}_inline "\"$2\""
 922     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 923 }
 924
 925 check_yasm(){
 926     log check_yasm "$@"
 927     echo "$1" > $TMPS
 928     log_file $TMPS
 929     shift 1
 930     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 931 }
 932
 933 ld_o(){
 934     eval printf '%s\\n' $LD_O
 935 }
 936
 937 check_ld(){
 938     log check_ld "$@"
 939     type=$1
 940     shift 1
 941     flags=$(filter_out '-l*|*.so' $@)
 942     libs=$(filter '-l*|*.so' $@)
 943     check_$type $($cflags_filter $flags) || return
 944     flags=$($ldflags_filter $flags)
 945     libs=$($ldflags_filter $libs)
 946     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 947 }
 948
 949 print_include(){
 950     hdr=$1
 951     test "${hdr%.h}" = "${hdr}" &&
 952         echo "#include $hdr"    ||
 953         echo "#include <$hdr>"
 954 }
 955
 956 check_code(){
 957     log check_code "$@"
 958     check=$1
 959     headers=$2
 960     code=$3
 961     shift 3
 962     {
 963         for hdr in $headers; do
 964             print_include $hdr
 965         done
 966         echo "int main(void) { $code; return 0; }"
 967     } | check_$check "$@"
 968 }
 969
 970 check_cppflags(){
 971     log check_cppflags "$@"
 972     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 973 int x;
 974 EOF
 975 }
 976
 977 test_cflags(){
 978     log test_cflags "$@"
 979     set -- $($cflags_filter "$@")
 980     check_cc "$@" <<EOF
 981 int x;
 982 EOF
 983 }
 984
 985 check_cflags(){
 986     log check_cflags "$@"
 987     test_cflags "$@" && add_cflags "$@"
 988 }
 989
 990 check_cxxflags(){
 991     log check_cxxflags "$@"
 992     set -- $($cflags_filter "$@")
 993     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 994 int x;
 995 EOF
 996 }
 997
 998 test_objcflags(){
 999     log test_cflags "$@"
1000     set -- $($cflags_filter "$@")
1001     check_objcc "$@" <<EOF
1002 int x;
1003 EOF
1004 }
1005
1006 check_objcflags(){
1007     log check_cflags "$@"
1008     test_objcflags "$@" && add_objcflags "$@"
1009 }
1010
1011 test_ldflags(){
1012     log test_ldflags "$@"
1013     check_ld "cc" "$@" <<EOF
1014 int main(void){ return 0; }
1015 EOF
1016 }
1017
1018 check_ldflags(){
1019     log check_ldflags "$@"
1020     test_ldflags "$@" && add_ldflags "$@"
1021 }
1022
1023 test_stripflags(){
1024     log test_stripflags "$@"
1025     # call check_cc to get a fresh TMPO
1026     check_cc <<EOF
1027 int main(void) { return 0; }
1028 EOF
1029     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1030 }
1031
1032 check_stripflags(){
1033     log check_stripflags "$@"
1034     test_stripflags "$@" && add_stripflags "$@"
1035 }
1036
1037 check_header(){
1038     log check_header "$@"
1039     header=$1
1040     shift
1041     disable_safe $header
1042     check_cpp "$@" <<EOF && enable_safe $header
1043 #include <$header>
1044 int x;
1045 EOF
1046 }
1047
1048 check_header_objcc(){
1049     log check_header_objcc "$@"
1050     rm -f -- "$TMPO"
1051     header=$1
1052     shift
1053     disable_safe $header
1054     {
1055        echo "#include <$header>"
1056        echo "int main(void) { return 0; }"
1057     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1058 }
1059
1060 check_func(){
1061     log check_func "$@"
1062     func=$1
1063     shift
1064     disable $func
1065     check_ld "cc" "$@" <<EOF && enable $func
1066 extern int $func();
1067 int main(void){ $func(); }
1068 EOF
1069 }
1070
1071 check_complexfunc(){
1072     log check_complexfunc "$@"
1073     func=$1
1074     narg=$2
1075     shift 2
1076     test $narg = 2 && args="f, g" || args="f * I"
1077     disable $func
1078     check_ld "cc" "$@" <<EOF && enable $func
1079 #include <complex.h>
1080 #include <math.h>
1081 float foo(complex float f, complex float g) { return $func($args); }
1082 int main(void){ return (int) foo; }
1083 EOF
1084 }
1085
1086 check_mathfunc(){
1087     log check_mathfunc "$@"
1088     func=$1
1089     narg=$2
1090     shift 2
1091     test $narg = 2 && args="f, g" || args="f"
1092     disable $func
1093     check_ld "cc" "$@" <<EOF && enable $func
1094 #include <math.h>
1095 float foo(float f, float g) { return $func($args); }
1096 int main(void){ return (int) foo; }
1097 EOF
1098 }
1099
1100 check_func_headers(){
1101     log check_func_headers "$@"
1102     headers=$1
1103     funcs=$2
1104     shift 2
1105     {
1106         for hdr in $headers; do
1107             print_include $hdr
1108         done
1109         for func in $funcs; do
1110             echo "long check_$func(void) { return (long) $func; }"
1111         done
1112         echo "int main(void) { return 0; }"
1113     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1114 }
1115
1116 check_class_headers_cpp(){
1117     log check_class_headers_cpp "$@"
1118     headers=$1
1119     classes=$2
1120     shift 2
1121     {
1122         for hdr in $headers; do
1123             echo "#include <$hdr>"
1124         done
1125         echo "int main(void) { "
1126         i=1
1127         for class in $classes; do
1128             echo "$class obj$i;"
1129             i=$(expr $i + 1)
1130         done
1131         echo "return 0; }"
1132     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1133 }
1134
1135 check_cpp_condition(){
1136     log check_cpp_condition "$@"
1137     header=$1
1138     condition=$2
1139     shift 2
1140     check_cpp "$@" <<EOF
1141 #include <$header>
1142 #if !($condition)
1143 #error "unsatisfied condition: $condition"
1144 #endif
1145 EOF
1146 }
1147
1148 check_lib(){
1149     log check_lib "$@"
1150     header="$1"
1151     func="$2"
1152     shift 2
1153     check_header $header && check_func $func "$@" && add_extralibs "$@"
1154 }
1155
1156 check_lib2(){
1157     log check_lib2 "$@"
1158     headers="$1"
1159     funcs="$2"
1160     shift 2
1161     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1162 }
1163
1164 check_lib_cpp(){
1165     log check_lib_cpp "$@"
1166     headers="$1"
1167     classes="$2"
1168     shift 2
1169     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1170 }
1171
1172 check_pkg_config(){
1173     log check_pkg_config "$@"
1174     pkgandversion="$1"
1175     pkg="${1%% *}"
1176     headers="$2"
1177     funcs="$3"
1178     shift 3
1179     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1180     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1181     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1182     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1183         set_safe "${pkg}_cflags" $pkg_cflags   &&
1184         set_safe "${pkg}_libs"   $pkg_libs
1185 }
1186
1187 check_exec(){
1188     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1189 }
1190
1191 check_exec_crash(){
1192     code=$(cat)
1193
1194     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1195     # are safe but may not be available everywhere.  Thus we use
1196     # raise(SIGTERM) instead.  The check is run in a subshell so we
1197     # can redirect the "Terminated" message from the shell.  SIGBUS
1198     # is not defined by standard C so it is used conditionally.
1199
1200     (check_exec "$@") >> $logfile 2>&1 <<EOF
1201 #include <signal.h>
1202 static void sighandler(int sig){
1203     raise(SIGTERM);
1204 }
1205 int foo(void){
1206     $code
1207 }
1208 int (*func_ptr)(void) = foo;
1209 int main(void){
1210     signal(SIGILL, sighandler);
1211     signal(SIGFPE, sighandler);
1212     signal(SIGSEGV, sighandler);
1213 #ifdef SIGBUS
1214     signal(SIGBUS, sighandler);
1215 #endif
1216     return func_ptr();
1217 }
1218 EOF
1219 }
1220
1221 check_type(){
1222     log check_type "$@"
1223     headers=$1
1224     type=$2
1225     shift 2
1226     disable_safe "$type"
1227     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1228 }
1229
1230 check_struct(){
1231     log check_struct "$@"
1232     headers=$1
1233     struct=$2
1234     member=$3
1235     shift 3
1236     disable_safe "${struct}_${member}"
1237     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1238         enable_safe "${struct}_${member}"
1239 }
1240
1241 check_builtin(){
1242     log check_builtin "$@"
1243     name=$1
1244     headers=$2
1245     builtin=$3
1246     shift 3
1247     disable "$name"
1248     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1249 }
1250
1251 check_compile_assert(){
1252     log check_compile_assert "$@"
1253     name=$1
1254     headers=$2
1255     condition=$3
1256     shift 3
1257     disable "$name"
1258     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1259 }
1260
1261 require(){
1262     name="$1"
1263     header="$2"
1264     func="$3"
1265     shift 3
1266     check_lib $header $func "$@" || die "ERROR: $name not found"
1267 }
1268
1269 require2(){
1270     name="$1"
1271     headers="$2"
1272     func="$3"
1273     shift 3
1274     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1275 }
1276
1277 require_cpp(){
1278     name="$1"
1279     headers="$2"
1280     classes="$3"
1281     shift 3
1282     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1283 }
1284
1285 use_pkg_config(){
1286     pkg="$1"
1287     check_pkg_config "$@" || return 1
1288     add_cflags    $(get_safe "${pkg}_cflags")
1289     add_extralibs $(get_safe "${pkg}_libs")
1290 }
1291
1292 require_pkg_config(){
1293     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1294 }
1295
1296 require_libfreetype(){
1297     log require_libfreetype "$@"
1298     pkg="freetype2"
1299     check_cmd $pkg_config --exists --print-errors $pkg \
1300       || die "ERROR: $pkg not found"
1301     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1302     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1303     {
1304         echo "#include <ft2build.h>"
1305         echo "#include FT_FREETYPE_H"
1306         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1307         echo "int main(void) { return 0; }"
1308     } | check_ld "cc" $pkg_cflags $pkg_libs \
1309       && set_safe "${pkg}_cflags" $pkg_cflags \
1310       && set_safe "${pkg}_libs"   $pkg_libs \
1311       || die "ERROR: $pkg not found"
1312     add_cflags    $(get_safe "${pkg}_cflags")
1313     add_extralibs $(get_safe "${pkg}_libs")
1314 }
1315
1316 hostcc_e(){
1317     eval printf '%s\\n' $HOSTCC_E
1318 }
1319
1320 hostcc_o(){
1321     eval printf '%s\\n' $HOSTCC_O
1322 }
1323
1324 check_host_cc(){
1325     log check_host_cc "$@"
1326     cat > $TMPC
1327     log_file $TMPC
1328     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1329 }
1330
1331 check_host_cpp(){
1332     log check_host_cpp "$@"
1333     cat > $TMPC
1334     log_file $TMPC
1335     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1336 }
1337
1338 check_host_cppflags(){
1339     log check_host_cppflags "$@"
1340     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1341 int x;
1342 EOF
1343 }
1344
1345 check_host_cflags(){
1346     log check_host_cflags "$@"
1347     set -- $($host_cflags_filter "$@")
1348     check_host_cc "$@" <<EOF && append host_cflags "$@"
1349 int x;
1350 EOF
1351 }
1352
1353 check_host_cpp_condition(){
1354     log check_host_cpp_condition "$@"
1355     header=$1
1356     condition=$2
1357     shift 2
1358     check_host_cpp "$@" <<EOF
1359 #include <$header>
1360 #if !($condition)
1361 #error "unsatisfied condition: $condition"
1362 #endif
1363 EOF
1364 }
1365
1366 cp_if_changed(){
1367     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1368     mkdir -p "$(dirname $2)"
1369     $cp_f "$1" "$2"
1370 }
1371
1372 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1373 # system-dependent things.
1374
1375 AVCODEC_COMPONENTS="
1376     bsfs
1377     decoders
1378     encoders
1379     hwaccels
1380     parsers
1381 "
1382
1383 AVDEVICE_COMPONENTS="
1384     indevs
1385     outdevs
1386 "
1387 AVFILTER_COMPONENTS="
1388     filters
1389 "
1390 AVFORMAT_COMPONENTS="
1391     demuxers
1392     muxers
1393     protocols
1394 "
1395
1396 AVRESAMPLE_COMPONENTS=""
1397 AVUTIL_COMPONENTS=""
1398
1399 COMPONENT_LIST="
1400     $AVCODEC_COMPONENTS
1401     $AVDEVICE_COMPONENTS
1402     $AVFILTER_COMPONENTS
1403     $AVFORMAT_COMPONENTS
1404     $AVRESAMPLE_COMPONENTS
1405     $AVUTIL_COMPONENTS
1406 "
1407
1408 EXAMPLE_LIST="
1409     avio_reading_example
1410     avio_dir_cmd_example
1411     decoding_encoding_example
1412     demuxing_decoding_example
1413     extract_mvs_example
1414     filter_audio_example
1415     filtering_audio_example
1416     filtering_video_example
1417     metadata_example
1418     muxing_example
1419     qsvdec_example
1420     remuxing_example
1421     resampling_audio_example
1422     scaling_video_example
1423     transcode_aac_example
1424     transcoding_example
1425 "
1426
1427 EXTERNAL_LIBRARY_LIST="
1428     avisynth
1429     bzlib
1430     chromaprint
1431     crystalhd
1432     decklink
1433     frei0r
1434     gcrypt
1435     gmp
1436     gnutls
1437     iconv
1438     ladspa
1439     libaacplus
1440     libass
1441     libbluray
1442     libbs2b
1443     libcaca
1444     libcdio
1445     libcelt
1446     libdc1394
1447     libdcadec
1448     libfaac
1449     libfdk_aac
1450     libflite
1451     libfontconfig
1452     libfreetype
1453     libfribidi
1454     libgme
1455     libgsm
1456     libiec61883
1457     libilbc
1458     libkvazaar
1459     libmfx
1460     libmodplug
1461     libmp3lame
1462     libnut
1463     libopencore_amrnb
1464     libopencore_amrwb
1465     libopencv
1466     libopenh264
1467     libopenjpeg
1468     libopus
1469     libpulse
1470     libquvi
1471     librtmp
1472     librubberband
1473     libschroedinger
1474     libshine
1475     libsmbclient
1476     libsnappy
1477     libsoxr
1478     libspeex
1479     libssh
1480     libtesseract
1481     libtheora
1482     libtwolame
1483     libutvideo
1484     libv4l2
1485     libvidstab
1486     libvo_aacenc
1487     libvo_amrwbenc
1488     libvorbis
1489     libvpx
1490     libwavpack
1491     libwebp
1492     libx264
1493     libx265
1494     libxavs
1495     libxcb
1496     libxcb_shm
1497     libxcb_shape
1498     libxcb_xfixes
1499     libxvid
1500     libzimg
1501     libzmq
1502     libzvbi
1503     lzma
1504     mmal
1505     netcdf
1506     nvenc
1507     openal
1508     opencl
1509     opengl
1510     openssl
1511     schannel
1512     sdl
1513     securetransport
1514     x11grab
1515     xlib
1516     zlib
1517 "
1518
1519 DOCUMENT_LIST="
1520     doc
1521     htmlpages
1522     manpages
1523     podpages
1524     txtpages
1525 "
1526
1527 FEATURE_LIST="
1528     ftrapv
1529     gray
1530     hardcoded_tables
1531     runtime_cpudetect
1532     safe_bitstream_reader
1533     shared
1534     small
1535     static
1536     swscale_alpha
1537 "
1538
1539 HWACCEL_LIST="
1540     d3d11va
1541     dxva2
1542     vaapi
1543     vda
1544     vdpau
1545     videotoolbox
1546     xvmc
1547 "
1548
1549 LIBRARY_LIST="
1550     avcodec
1551     avdevice
1552     avfilter
1553     avformat
1554     avresample
1555     avutil
1556     postproc
1557     swresample
1558     swscale
1559 "
1560
1561 LICENSE_LIST="
1562     gpl
1563     nonfree
1564     version3
1565 "
1566
1567 PROGRAM_LIST="
1568     ffplay
1569     ffprobe
1570     ffserver
1571     ffmpeg
1572 "
1573
1574 SUBSYSTEM_LIST="
1575     dct
1576     dwt
1577     error_resilience
1578     faan
1579     fast_unaligned
1580     fft
1581     lsp
1582     lzo
1583     mdct
1584     pixelutils
1585     network
1586     rdft
1587 "
1588
1589 CONFIG_LIST="
1590     $COMPONENT_LIST
1591     $DOCUMENT_LIST
1592     $EXAMPLE_LIST
1593     $EXTERNAL_LIBRARY_LIST
1594     $FEATURE_LIST
1595     $HWACCEL_LIST
1596     $LICENSE_LIST
1597     $LIBRARY_LIST
1598     $PROGRAM_LIST
1599     $SUBSYSTEM_LIST
1600     fontconfig
1601     incompatible_libav_abi
1602     memalign_hack
1603     memory_poisoning
1604     neon_clobber_test
1605     pic
1606     pod2man
1607     raise_major
1608     thumb
1609     valgrind_backtrace
1610     xmm_clobber_test
1611 "
1612
1613 THREADS_LIST="
1614     pthreads
1615     os2threads
1616     w32threads
1617 "
1618
1619 ATOMICS_LIST="
1620     atomics_gcc
1621     atomics_suncc
1622     atomics_win32
1623 "
1624
1625 ARCH_LIST="
1626     aarch64
1627     alpha
1628     arm
1629     avr32
1630     avr32_ap
1631     avr32_uc
1632     bfin
1633     ia64
1634     m68k
1635     mips
1636     mips64
1637     parisc
1638     ppc
1639     ppc64
1640     s390
1641     sh4
1642     sparc
1643     sparc64
1644     tilegx
1645     tilepro
1646     tomi
1647     x86
1648     x86_32
1649     x86_64
1650 "
1651
1652 ARCH_EXT_LIST_ARM="
1653     armv5te
1654     armv6
1655     armv6t2
1656     armv8
1657     neon
1658     vfp
1659     vfpv3
1660     setend
1661 "
1662
1663 ARCH_EXT_LIST_MIPS="
1664     mipsfpu
1665     mips32r2
1666     mips64r2
1667     mips32r6
1668     mips64r6
1669     mipsdsp
1670     mipsdspr2
1671     msa
1672 "
1673
1674 ARCH_EXT_LIST_LOONGSON="
1675     loongson2
1676     loongson3
1677     mmi
1678 "
1679
1680 ARCH_EXT_LIST_X86_SIMD="
1681     aesni
1682     amd3dnow
1683     amd3dnowext
1684     avx
1685     avx2
1686     fma3
1687     fma4
1688     mmx
1689     mmxext
1690     sse
1691     sse2
1692     sse3
1693     sse4
1694     sse42
1695     ssse3
1696     xop
1697 "
1698
1699 ARCH_EXT_LIST_PPC="
1700     altivec
1701     dcbzl
1702     ldbrx
1703     power8
1704     ppc4xx
1705     vsx
1706 "
1707
1708 ARCH_EXT_LIST_X86="
1709     $ARCH_EXT_LIST_X86_SIMD
1710     cpunop
1711     i686
1712 "
1713
1714 ARCH_EXT_LIST="
1715     $ARCH_EXT_LIST_ARM
1716     $ARCH_EXT_LIST_PPC
1717     $ARCH_EXT_LIST_X86
1718     $ARCH_EXT_LIST_MIPS
1719     $ARCH_EXT_LIST_LOONGSON
1720 "
1721
1722 ARCH_FEATURES="
1723     aligned_stack
1724     fast_64bit
1725     fast_clz
1726     fast_cmov
1727     local_aligned_8
1728     local_aligned_16
1729     local_aligned_32
1730     simd_align_16
1731 "
1732
1733 BUILTIN_LIST="
1734     atomic_cas_ptr
1735     atomic_compare_exchange
1736     machine_rw_barrier
1737     MemoryBarrier
1738     mm_empty
1739     rdtsc
1740     sarestart
1741     sync_val_compare_and_swap
1742 "
1743 HAVE_LIST_CMDLINE="
1744     inline_asm
1745     symver
1746     yasm
1747 "
1748
1749 HAVE_LIST_PUB="
1750     bigendian
1751     fast_unaligned
1752     incompatible_libav_abi
1753 "
1754
1755 HEADERS_LIST="
1756     alsa_asoundlib_h
1757     altivec_h
1758     arpa_inet_h
1759     asm_types_h
1760     cdio_paranoia_h
1761     cdio_paranoia_paranoia_h
1762     dev_bktr_ioctl_bt848_h
1763     dev_bktr_ioctl_meteor_h
1764     dev_ic_bt8xx_h
1765     dev_video_bktr_ioctl_bt848_h
1766     dev_video_meteor_ioctl_meteor_h
1767     direct_h
1768     dirent_h
1769     dlfcn_h
1770     d3d11_h
1771     dxva_h
1772     ES2_gl_h
1773     gsm_h
1774     io_h
1775     mach_mach_time_h
1776     machine_ioctl_bt848_h
1777     machine_ioctl_meteor_h
1778     malloc_h
1779     openjpeg_2_1_openjpeg_h
1780     openjpeg_2_0_openjpeg_h
1781     openjpeg_1_5_openjpeg_h
1782     OpenGL_gl3_h
1783     poll_h
1784     sndio_h
1785     soundcard_h
1786     sys_mman_h
1787     sys_param_h
1788     sys_resource_h
1789     sys_select_h
1790     sys_soundcard_h
1791     sys_time_h
1792     sys_un_h
1793     sys_videoio_h
1794     termios_h
1795     udplite_h
1796     unistd_h
1797     valgrind_valgrind_h
1798     windows_h
1799     winsock2_h
1800 "
1801
1802 INTRINSICS_LIST="
1803     intrinsics_neon
1804 "
1805
1806 COMPLEX_FUNCS="
1807     cabs
1808     cexp
1809 "
1810
1811 MATH_FUNCS="
1812     atanf
1813     atan2f
1814     cbrt
1815     cbrtf
1816     copysign
1817     cosf
1818     erf
1819     exp2
1820     exp2f
1821     expf
1822     hypot
1823     isfinite
1824     isinf
1825     isnan
1826     ldexpf
1827     llrint
1828     llrintf
1829     log2
1830     log2f
1831     log10f
1832     lrint
1833     lrintf
1834     powf
1835     rint
1836     round
1837     roundf
1838     sinf
1839     trunc
1840     truncf
1841 "
1842
1843 SYSTEM_FUNCS="
1844     access
1845     aligned_malloc
1846     arc4random
1847     clock_gettime
1848     closesocket
1849     CommandLineToArgvW
1850     CoTaskMemFree
1851     CryptGenRandom
1852     dlopen
1853     fcntl
1854     flt_lim
1855     fork
1856     getaddrinfo
1857     gethrtime
1858     getopt
1859     GetProcessAffinityMask
1860     GetProcessMemoryInfo
1861     GetProcessTimes
1862     getrusage
1863     GetSystemTimeAsFileTime
1864     gettimeofday
1865     glob
1866     glXGetProcAddress
1867     gmtime_r
1868     inet_aton
1869     isatty
1870     jack_port_get_latency_range
1871     kbhit
1872     localtime_r
1873     lstat
1874     lzo1x_999_compress
1875     mach_absolute_time
1876     MapViewOfFile
1877     memalign
1878     mkstemp
1879     mmap
1880     mprotect
1881     nanosleep
1882     PeekNamedPipe
1883     posix_memalign
1884     pthread_cancel
1885     sched_getaffinity
1886     SetConsoleTextAttribute
1887     SetConsoleCtrlHandler
1888     setmode
1889     setrlimit
1890     Sleep
1891     strerror_r
1892     sysconf
1893     sysctl
1894     usleep
1895     UTGetOSTypeFromString
1896     VirtualAlloc
1897     wglGetProcAddress
1898 "
1899
1900 TOOLCHAIN_FEATURES="
1901     as_dn_directive
1902     as_func
1903     as_object_arch
1904     asm_mod_q
1905     attribute_may_alias
1906     attribute_packed
1907     ebp_available
1908     ebx_available
1909     gnu_as
1910     gnu_windres
1911     ibm_asm
1912     inline_asm_labels
1913     inline_asm_nonlocal_labels
1914     inline_asm_direct_symbol_refs
1915     pragma_deprecated
1916     rsync_contimeout
1917     symver_asm_label
1918     symver_gnu_asm
1919     vfp_args
1920     xform_asm
1921     xmm_clobbers
1922 "
1923
1924 TYPES_LIST="
1925     CONDITION_VARIABLE_Ptr
1926     socklen_t
1927     struct_addrinfo
1928     struct_group_source_req
1929     struct_ip_mreq_source
1930     struct_ipv6_mreq
1931     struct_pollfd
1932     struct_rusage_ru_maxrss
1933     struct_sctp_event_subscribe
1934     struct_sockaddr_in6
1935     struct_sockaddr_sa_len
1936     struct_sockaddr_storage
1937     struct_stat_st_mtim_tv_nsec
1938     struct_v4l2_frmivalenum_discrete
1939 "
1940
1941 HAVE_LIST="
1942     $ARCH_EXT_LIST
1943     $(add_suffix _external $ARCH_EXT_LIST)
1944     $(add_suffix _inline   $ARCH_EXT_LIST)
1945     $ARCH_FEATURES
1946     $ATOMICS_LIST
1947     $BUILTIN_LIST
1948     $COMPLEX_FUNCS
1949     $HAVE_LIST_CMDLINE
1950     $HAVE_LIST_PUB
1951     $HEADERS_LIST
1952     $INTRINSICS_LIST
1953     $MATH_FUNCS
1954     $SYSTEM_FUNCS
1955     $THREADS_LIST
1956     $TOOLCHAIN_FEATURES
1957     $TYPES_LIST
1958     atomics_native
1959     dos_paths
1960     dxva2api_cobj
1961     dxva2_lib
1962     winrt
1963     libc_msvcrt
1964     libdc1394_1
1965     libdc1394_2
1966     makeinfo
1967     makeinfo_html
1968     perl
1969     pod2man
1970     sdl
1971     section_data_rel_ro
1972     texi2html
1973     threads
1974     vaapi_x11
1975     vdpau_x11
1976     xlib
1977 "
1978
1979 # options emitted with CONFIG_ prefix but not available on the command line
1980 CONFIG_EXTRA="
1981     aandcttables
1982     ac3dsp
1983     audio_frame_queue
1984     audiodsp
1985     blockdsp
1986     bswapdsp
1987     cabac
1988     dirac_parse
1989     dvprofile
1990     exif
1991     faandct
1992     faanidct
1993     fdctdsp
1994     flacdsp
1995     fmtconvert
1996     frame_thread_encoder
1997     g722dsp
1998     golomb
1999     gplv3
2000     h263dsp
2001     h264chroma
2002     h264dsp
2003     h264pred
2004     h264qpel
2005     hpeldsp
2006     huffman
2007     huffyuvdsp
2008     huffyuvencdsp
2009     idctdsp
2010     iirfilter
2011     imdct15
2012     intrax8
2013     ividsp
2014     jpegtables
2015     libx262
2016     lgplv3
2017     llauddsp
2018     llviddsp
2019     lpc
2020     lzf
2021     me_cmp
2022     mpeg_er
2023     mpegaudio
2024     mpegaudiodsp
2025     mpegvideo
2026     mpegvideoenc
2027     mss34dsp
2028     pixblockdsp
2029     qpeldsp
2030     qsv
2031     qsvdec
2032     qsvenc
2033     rangecoder
2034     riffdec
2035     riffenc
2036     rtpdec
2037     rtpenc_chain
2038     rv34dsp
2039     sinewin
2040     snappy
2041     startcode
2042     texturedsp
2043     texturedspenc
2044     tpeldsp
2045     videodsp
2046     vp3dsp
2047     vp56dsp
2048     vp8dsp
2049     wma_freqs
2050     wmv2dsp
2051 "
2052
2053 CMDLINE_SELECT="
2054     $ARCH_EXT_LIST
2055     $CONFIG_LIST
2056     $HAVE_LIST_CMDLINE
2057     $THREADS_LIST
2058     asm
2059     cross_compile
2060     debug
2061     extra_warnings
2062     logging
2063     lto
2064     optimizations
2065     rpath
2066     stripping
2067 "
2068
2069 PATHS_LIST="
2070     bindir
2071     datadir
2072     docdir
2073     incdir
2074     libdir
2075     mandir
2076     pkgconfigdir
2077     prefix
2078     shlibdir
2079 "
2080
2081 CMDLINE_SET="
2082     $PATHS_LIST
2083     ar
2084     arch
2085     as
2086     assert_level
2087     build_suffix
2088     cc
2089     objcc
2090     cpu
2091     cross_prefix
2092     custom_allocator
2093     cxx
2094     dep_cc
2095     doxygen
2096     env
2097     extra_version
2098     gas
2099     host_cc
2100     host_cflags
2101     host_ld
2102     host_ldflags
2103     host_libs
2104     host_os
2105     install
2106     ld
2107     logfile
2108     malloc_prefix
2109     nm
2110     optflags
2111     pkg_config
2112     pkg_config_flags
2113     progs_suffix
2114     random_seed
2115     ranlib
2116     samples
2117     strip
2118     sws_max_filter_size
2119     sysinclude
2120     sysroot
2121     target_exec
2122     target_os
2123     target_path
2124     target_samples
2125     tempprefix
2126     toolchain
2127     valgrind
2128     yasmexe
2129 "
2130
2131 CMDLINE_APPEND="
2132     extra_cflags
2133     extra_cxxflags
2134     extra_objcflags
2135     host_cppflags
2136 "
2137
2138 # code dependency declarations
2139
2140 # architecture extensions
2141
2142 armv5te_deps="arm"
2143 armv6_deps="arm"
2144 armv6t2_deps="arm"
2145 armv8_deps="aarch64"
2146 neon_deps_any="aarch64 arm"
2147 intrinsics_neon_deps="neon"
2148 vfp_deps_any="aarch64 arm"
2149 vfpv3_deps="vfp"
2150 setend_deps="arm"
2151
2152 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2153
2154 mipsfpu_deps="mips"
2155 mipsdsp_deps="mips"
2156 mipsdspr2_deps="mips"
2157 mips32r2_deps="mips"
2158 mips32r6_deps="mips"
2159 mips64r2_deps="mips"
2160 mips64r6_deps="mips"
2161 msa_deps="mips"
2162 mmi_deps="mips"
2163
2164 altivec_deps="ppc"
2165 dcbzl_deps="ppc"
2166 ldbrx_deps="ppc"
2167 ppc4xx_deps="ppc"
2168 vsx_deps="altivec"
2169 power8_deps="vsx"
2170
2171 cpunop_deps="i686"
2172 x86_64_select="i686"
2173 x86_64_suggest="fast_cmov"
2174
2175 amd3dnow_deps="mmx"
2176 amd3dnowext_deps="amd3dnow"
2177 i686_deps="x86"
2178 mmx_deps="x86"
2179 mmxext_deps="mmx"
2180 sse_deps="mmxext"
2181 sse2_deps="sse"
2182 sse3_deps="sse2"
2183 ssse3_deps="sse3"
2184 sse4_deps="ssse3"
2185 sse42_deps="sse4"
2186 aesni_deps="sse42"
2187 avx_deps="sse42"
2188 xop_deps="avx"
2189 fma3_deps="avx"
2190 fma4_deps="avx"
2191 avx2_deps="avx"
2192
2193 mmx_external_deps="yasm"
2194 mmx_inline_deps="inline_asm"
2195 mmx_suggest="mmx_external mmx_inline"
2196
2197 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2198     eval dep=\$${ext}_deps
2199     eval ${ext}_external_deps='"${dep}_external"'
2200     eval ${ext}_inline_deps='"${dep}_inline"'
2201     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2202 done
2203
2204 aligned_stack_if_any="aarch64 ppc x86"
2205 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2206 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2207 fast_unaligned_if_any="aarch64 ppc x86"
2208 simd_align_16_if_any="altivec neon sse"
2209
2210 # system capabilities
2211 symver_if_any="symver_asm_label symver_gnu_asm"
2212 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2213
2214 # threading support
2215 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2216 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2217 atomics_win32_if="MemoryBarrier"
2218 atomics_native_if_any="$ATOMICS_LIST"
2219 w32threads_deps="atomics_native"
2220 threads_if_any="$THREADS_LIST"
2221
2222 # subsystems
2223 dct_select="rdft"
2224 dirac_parse_select="golomb"
2225 error_resilience_select="me_cmp"
2226 faandct_deps="faan fdctdsp"
2227 faanidct_deps="faan idctdsp"
2228 frame_thread_encoder_deps="encoders threads"
2229 intrax8_select="error_resilience"
2230 mdct_select="fft"
2231 rdft_select="fft"
2232 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2233 mpeg_er_select="error_resilience"
2234 mpegaudio_select="mpegaudiodsp"
2235 mpegaudiodsp_select="dct"
2236 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2237 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2238 qsvdec_select="qsv"
2239 qsvenc_select="qsv"
2240
2241 # decoders / encoders
2242 aac_decoder_select="imdct15 mdct sinewin"
2243 aac_fixed_decoder_select="mdct sinewin"
2244 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2245 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2246 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2247 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2248 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2249 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2250 adpcm_g722_decoder_select="g722dsp"
2251 adpcm_g722_encoder_select="g722dsp"
2252 aic_decoder_select="golomb idctdsp"
2253 alac_encoder_select="lpc"
2254 als_decoder_select="bswapdsp"
2255 amrnb_decoder_select="lsp"
2256 amrwb_decoder_select="lsp"
2257 amv_decoder_select="sp5x_decoder exif"
2258 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2259 ape_decoder_select="bswapdsp llauddsp"
2260 apng_decoder_select="zlib"
2261 apng_encoder_select="huffyuvencdsp zlib"
2262 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2263 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2264 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2265 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2266 atrac1_decoder_select="mdct sinewin"
2267 atrac3_decoder_select="mdct"
2268 atrac3p_decoder_select="mdct sinewin"
2269 avrn_decoder_select="exif jpegtables"
2270 bink_decoder_select="blockdsp hpeldsp"
2271 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2272 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2273 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2274 cllc_decoder_select="bswapdsp"
2275 comfortnoise_encoder_select="lpc"
2276 cook_decoder_select="audiodsp mdct sinewin"
2277 cscd_decoder_select="lzo"
2278 cscd_decoder_suggest="zlib"
2279 dca_decoder_select="fmtconvert mdct"
2280 dds_decoder_select="texturedsp"
2281 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2282 dnxhd_decoder_select="blockdsp idctdsp"
2283 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2284 dvvideo_decoder_select="dvprofile idctdsp"
2285 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2286 dxa_decoder_select="zlib"
2287 dxv_decoder_select="lzf texturedsp"
2288 eac3_decoder_select="ac3_decoder"
2289 eac3_encoder_select="ac3_encoder"
2290 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2291 eatgq_decoder_select="aandcttables"
2292 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2293 exr_decoder_select="zlib"
2294 ffv1_decoder_select="golomb rangecoder"
2295 ffv1_encoder_select="rangecoder"
2296 ffvhuff_decoder_select="huffyuv_decoder"
2297 ffvhuff_encoder_select="huffyuv_encoder"
2298 fic_decoder_select="golomb"
2299 flac_decoder_select="flacdsp golomb"
2300 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2301 flashsv_decoder_select="zlib"
2302 flashsv_encoder_select="zlib"
2303 flashsv2_encoder_select="zlib"
2304 flashsv2_decoder_select="zlib"
2305 flv_decoder_select="h263_decoder"
2306 flv_encoder_select="h263_encoder"
2307 fourxm_decoder_select="blockdsp bswapdsp"
2308 fraps_decoder_select="bswapdsp huffman"
2309 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2310 g729_decoder_select="audiodsp"
2311 h261_decoder_select="mpegvideo"
2312 h261_encoder_select="aandcttables mpegvideoenc"
2313 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2314 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2315 h263i_decoder_select="h263_decoder"
2316 h263p_decoder_select="h263_decoder"
2317 h263p_encoder_select="h263_encoder"
2318 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2319 h264_decoder_suggest="error_resilience"
2320 h264_qsv_decoder_deps="libmfx"
2321 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2322 h264_qsv_encoder_deps="libmfx"
2323 h264_qsv_encoder_select="qsvenc"
2324 hap_decoder_select="snappy texturedsp"
2325 hap_encoder_deps="libsnappy"
2326 hap_encoder_select="texturedspenc"
2327 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2328 hevc_qsv_encoder_deps="libmfx"
2329 hevc_qsv_decoder_deps="libmfx"
2330 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2331 hevc_qsv_encoder_select="qsvenc"
2332 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2333 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2334 iac_decoder_select="imc_decoder"
2335 imc_decoder_select="bswapdsp fft mdct sinewin"
2336 indeo3_decoder_select="hpeldsp"
2337 indeo4_decoder_select="ividsp"
2338 indeo5_decoder_select="ividsp"
2339 interplay_video_decoder_select="hpeldsp"
2340 jpegls_decoder_select="golomb mjpeg_decoder"
2341 jpegls_encoder_select="golomb"
2342 jv_decoder_select="blockdsp"
2343 lagarith_decoder_select="huffyuvdsp"
2344 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2345 loco_decoder_select="golomb"
2346 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2347 metasound_decoder_select="lsp mdct sinewin"
2348 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2349 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2350 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2351 mjpegb_decoder_select="mjpeg_decoder"
2352 mlp_decoder_select="mlp_parser"
2353 motionpixels_decoder_select="bswapdsp"
2354 mp1_decoder_select="mpegaudio"
2355 mp1float_decoder_select="mpegaudio"
2356 mp2_decoder_select="mpegaudio"
2357 mp2float_decoder_select="mpegaudio"
2358 mp3_decoder_select="mpegaudio"
2359 mp3adu_decoder_select="mpegaudio"
2360 mp3adufloat_decoder_select="mpegaudio"
2361 mp3float_decoder_select="mpegaudio"
2362 mp3on4_decoder_select="mpegaudio"
2363 mp3on4float_decoder_select="mpegaudio"
2364 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2365 mpc8_decoder_select="mpegaudiodsp"
2366 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2367 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2368 mpegvideo_decoder_select="mpegvideo"
2369 mpeg1video_decoder_select="mpegvideo"
2370 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2371 mpeg2video_decoder_select="mpegvideo"
2372 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2373 mpeg2_qsv_decoder_deps="libmfx"
2374 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2375 mpeg2_qsv_encoder_deps="libmfx"
2376 mpeg2_qsv_encoder_select="qsvenc"
2377 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2378 mpeg4_encoder_select="h263_encoder"
2379 msa1_decoder_select="mss34dsp"
2380 msmpeg4v1_decoder_select="h263_decoder"
2381 msmpeg4v2_decoder_select="h263_decoder"
2382 msmpeg4v2_encoder_select="h263_encoder"
2383 msmpeg4v3_decoder_select="h263_decoder"
2384 msmpeg4v3_encoder_select="h263_encoder"
2385 mss2_decoder_select="vc1_decoder"
2386 mts2_decoder_select="mss34dsp"
2387 mxpeg_decoder_select="mjpeg_decoder"
2388 nellymoser_decoder_select="mdct sinewin"
2389 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2390 nuv_decoder_select="idctdsp lzo"
2391 on2avc_decoder_select="mdct"
2392 opus_decoder_deps="swresample"
2393 opus_decoder_select="imdct15"
2394 png_decoder_select="zlib"
2395 png_encoder_select="huffyuvencdsp zlib"
2396 prores_decoder_select="blockdsp idctdsp"
2397 prores_encoder_select="fdctdsp"
2398 qcelp_decoder_select="lsp"
2399 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2400 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2401 ra_144_decoder_select="audiodsp"
2402 ralf_decoder_select="golomb"
2403 rawvideo_decoder_select="bswapdsp"
2404 rscc_decoder_select="zlib"
2405 rtjpeg_decoder_select="me_cmp"
2406 rv10_decoder_select="h263_decoder"
2407 rv10_encoder_select="h263_encoder"
2408 rv20_decoder_select="h263_decoder"
2409 rv20_encoder_select="h263_encoder"
2410 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2411 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2412 screenpresso_decoder_select="zlib"
2413 shorten_decoder_select="golomb"
2414 sipr_decoder_select="lsp"
2415 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2416 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2417 sonic_decoder_select="golomb rangecoder"
2418 sonic_encoder_select="golomb rangecoder"
2419 sonic_ls_encoder_select="golomb rangecoder"
2420 sp5x_decoder_select="mjpeg_decoder"
2421 svq1_decoder_select="hpeldsp"
2422 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2423 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2424 svq3_decoder_suggest="zlib"
2425 tak_decoder_select="audiodsp"
2426 tdsc_decoder_select="zlib mjpeg_decoder"
2427 theora_decoder_select="vp3_decoder"
2428 thp_decoder_select="mjpeg_decoder"
2429 tiff_decoder_suggest="zlib lzma"
2430 tiff_encoder_suggest="zlib"
2431 truehd_decoder_select="mlp_parser"
2432 truemotion2_decoder_select="bswapdsp"
2433 truespeech_decoder_select="bswapdsp"
2434 tscc_decoder_select="zlib"
2435 twinvq_decoder_select="mdct lsp sinewin"
2436 txd_decoder_select="texturedsp"
2437 utvideo_decoder_select="bswapdsp"
2438 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2439 vble_decoder_select="huffyuvdsp"
2440 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2441 vc1image_decoder_select="vc1_decoder"
2442 vc1_qsv_decoder_deps="libmfx"
2443 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2444 vorbis_decoder_select="mdct"
2445 vorbis_encoder_select="mdct"
2446 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2447 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2448 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2449 vp6a_decoder_select="vp6_decoder"
2450 vp6f_decoder_select="vp6_decoder"
2451 vp7_decoder_select="h264pred videodsp vp8dsp"
2452 vp8_decoder_select="h264pred videodsp vp8dsp"
2453 vp9_decoder_select="videodsp vp9_parser"
2454 webp_decoder_select="vp8_decoder"
2455 wmalossless_decoder_select="llauddsp"
2456 wmapro_decoder_select="mdct sinewin wma_freqs"
2457 wmav1_decoder_select="mdct sinewin wma_freqs"
2458 wmav1_encoder_select="mdct sinewin wma_freqs"
2459 wmav2_decoder_select="mdct sinewin wma_freqs"
2460 wmav2_encoder_select="mdct sinewin wma_freqs"
2461 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2462 wmv1_decoder_select="h263_decoder"
2463 wmv1_encoder_select="h263_encoder"
2464 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2465 wmv2_encoder_select="h263_encoder wmv2dsp"
2466 wmv3_decoder_select="vc1_decoder"
2467 wmv3image_decoder_select="wmv3_decoder"
2468 zerocodec_decoder_select="zlib"
2469 zlib_decoder_select="zlib"
2470 zlib_encoder_select="zlib"
2471 zmbv_decoder_select="zlib"
2472 zmbv_encoder_select="zlib"
2473
2474 # hardware accelerators
2475 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2476 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2477 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2478 vaapi_deps="va_va_h"
2479 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2480 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2481 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2482 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2483 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2484 xvmc_deps="X11_extensions_XvMClib_h"
2485
2486 h263_vaapi_hwaccel_deps="vaapi"
2487 h263_vaapi_hwaccel_select="h263_decoder"
2488 h263_videotoolbox_hwaccel_deps="videotoolbox"
2489 h263_videotoolbox_hwaccel_select="h263_decoder"
2490 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2491 h264_d3d11va_hwaccel_deps="d3d11va"
2492 h264_d3d11va_hwaccel_select="h264_decoder"
2493 h264_dxva2_hwaccel_deps="dxva2"
2494 h264_dxva2_hwaccel_select="h264_decoder"
2495 h264_mmal_decoder_deps="mmal"
2496 h264_mmal_hwaccel_deps="mmal"
2497 h264_mmal_decoder_select="h264_decoder"
2498 h264_mmal_encoder_deps="mmal"
2499 h264_qsv_hwaccel_deps="libmfx"
2500 h264_vaapi_hwaccel_deps="vaapi"
2501 h264_vaapi_hwaccel_select="h264_decoder"
2502 h264_vda_decoder_deps="vda"
2503 h264_vda_decoder_select="h264_decoder"
2504 h264_vda_hwaccel_deps="vda"
2505 h264_vda_hwaccel_select="h264_decoder"
2506 h264_vda_old_hwaccel_deps="vda"
2507 h264_vda_old_hwaccel_select="h264_decoder"
2508 h264_vdpau_decoder_deps="vdpau"
2509 h264_vdpau_decoder_select="h264_decoder"
2510 h264_vdpau_hwaccel_deps="vdpau"
2511 h264_vdpau_hwaccel_select="h264_decoder"
2512 h264_videotoolbox_hwaccel_deps="videotoolbox"
2513 h264_videotoolbox_hwaccel_select="h264_decoder"
2514 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2515 hevc_d3d11va_hwaccel_select="hevc_decoder"
2516 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2517 hevc_dxva2_hwaccel_select="hevc_decoder"
2518 hevc_qsv_hwaccel_deps="libmfx"
2519 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2520 hevc_vaapi_hwaccel_select="hevc_decoder"
2521 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2522 hevc_vdpau_hwaccel_select="hevc_decoder"
2523 mpeg_vdpau_decoder_deps="vdpau"
2524 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2525 mpeg_xvmc_hwaccel_deps="xvmc"
2526 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2527 mpeg1_vdpau_decoder_deps="vdpau"
2528 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2529 mpeg1_vdpau_hwaccel_deps="vdpau"
2530 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2531 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2532 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2533 mpeg1_xvmc_hwaccel_deps="xvmc"
2534 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2535 mpeg2_crystalhd_decoder_select="crystalhd"
2536 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2537 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2538 mpeg2_dxva2_hwaccel_deps="dxva2"
2539 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2540 mpeg2_mmal_decoder_deps="mmal"
2541 mpeg2_mmal_hwaccel_deps="mmal"
2542 mpeg2_mmal_decoder_select="mpeg2video_decoder"
2543 mpeg2_qsv_hwaccel_deps="libmfx"
2544 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2545 mpeg2_vaapi_hwaccel_deps="vaapi"
2546 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2547 mpeg2_vdpau_hwaccel_deps="vdpau"
2548 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2549 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2550 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2551 mpeg2_xvmc_hwaccel_deps="xvmc"
2552 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2553 mpeg4_crystalhd_decoder_select="crystalhd"
2554 mpeg4_vaapi_hwaccel_deps="vaapi"
2555 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2556 mpeg4_vdpau_decoder_deps="vdpau"
2557 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2558 mpeg4_vdpau_hwaccel_deps="vdpau"
2559 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2560 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2561 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2562 msmpeg4_crystalhd_decoder_select="crystalhd"
2563 vc1_crystalhd_decoder_select="crystalhd"
2564 vc1_d3d11va_hwaccel_deps="d3d11va"
2565 vc1_d3d11va_hwaccel_select="vc1_decoder"
2566 vc1_dxva2_hwaccel_deps="dxva2"
2567 vc1_dxva2_hwaccel_select="vc1_decoder"
2568 vc1_vaapi_hwaccel_deps="vaapi"
2569 vc1_vaapi_hwaccel_select="vc1_decoder"
2570 vc1_vdpau_decoder_deps="vdpau"
2571 vc1_vdpau_decoder_select="vc1_decoder"
2572 vc1_vdpau_hwaccel_deps="vdpau"
2573 vc1_vdpau_hwaccel_select="vc1_decoder"
2574 vc1_mmal_decoder_deps="mmal"
2575 vc1_mmal_hwaccel_deps="mmal"
2576 vc1_mmal_decoder_select="vc1_decoder"
2577 vc1_qsv_hwaccel_deps="libmfx"
2578 vc1_qsv_hwaccel_select="qsvdec_vc1"
2579 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2580 vp9_d3d11va_hwaccel_select="vp9_decoder"
2581 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2582 vp9_dxva2_hwaccel_select="vp9_decoder"
2583 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2584 vp9_vaapi_hwaccel_select="vp9_decoder"
2585 wmv3_crystalhd_decoder_select="crystalhd"
2586 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2587 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2588 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2589 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2590 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2591
2592 # parsers
2593 h264_parser_select="h264_decoder"
2594 hevc_parser_select="golomb"
2595 mpegvideo_parser_select="mpegvideo"
2596 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2597 vc1_parser_select="mpegvideo startcode vc1_decoder"
2598
2599 # bitstream_filters
2600 mjpeg2jpeg_bsf_select="jpegtables"
2601
2602 # external libraries
2603 chromaprint_muxer_deps="chromaprint"
2604 libaacplus_encoder_deps="libaacplus"
2605 libcelt_decoder_deps="libcelt"
2606 libdcadec_decoder_deps="libdcadec"
2607 libfaac_encoder_deps="libfaac"
2608 libfaac_encoder_select="audio_frame_queue"
2609 libfdk_aac_decoder_deps="libfdk_aac"
2610 libfdk_aac_encoder_deps="libfdk_aac"
2611 libfdk_aac_encoder_select="audio_frame_queue"
2612 libgme_demuxer_deps="libgme"
2613 libgsm_decoder_deps="libgsm"
2614 libgsm_encoder_deps="libgsm"
2615 libgsm_ms_decoder_deps="libgsm"
2616 libgsm_ms_encoder_deps="libgsm"
2617 libilbc_decoder_deps="libilbc"
2618 libilbc_encoder_deps="libilbc"
2619 libkvazaar_encoder_deps="libkvazaar"
2620 libmodplug_demuxer_deps="libmodplug"
2621 libmp3lame_encoder_deps="libmp3lame"
2622 libmp3lame_encoder_select="audio_frame_queue"
2623 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2624 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2625 libopencore_amrnb_encoder_select="audio_frame_queue"
2626 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2627 libopenh264_encoder_deps="libopenh264"
2628 libopenjpeg_decoder_deps="libopenjpeg"
2629 libopenjpeg_encoder_deps="libopenjpeg"
2630 libopus_decoder_deps="libopus"
2631 libopus_encoder_deps="libopus"
2632 libopus_encoder_select="audio_frame_queue"
2633 libquvi_demuxer_deps="libquvi"
2634 libschroedinger_decoder_deps="libschroedinger"
2635 libschroedinger_encoder_deps="libschroedinger"
2636 libshine_encoder_deps="libshine"
2637 libshine_encoder_select="audio_frame_queue"
2638 libspeex_decoder_deps="libspeex"
2639 libspeex_encoder_deps="libspeex"
2640 libspeex_encoder_select="audio_frame_queue"
2641 libtheora_encoder_deps="libtheora"
2642 libtwolame_encoder_deps="libtwolame"
2643 libvo_aacenc_encoder_deps="libvo_aacenc"
2644 libvo_aacenc_encoder_select="audio_frame_queue"
2645 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2646 libvorbis_decoder_deps="libvorbis"
2647 libvorbis_encoder_deps="libvorbis"
2648 libvorbis_encoder_select="audio_frame_queue"
2649 libvpx_vp8_decoder_deps="libvpx"
2650 libvpx_vp8_encoder_deps="libvpx"
2651 libvpx_vp9_decoder_deps="libvpx"
2652 libvpx_vp9_encoder_deps="libvpx"
2653 libwavpack_encoder_deps="libwavpack"
2654 libwebp_encoder_deps="libwebp"
2655 libwebp_anim_encoder_deps="libwebp"
2656 libx262_encoder_deps="libx262"
2657 libx264_encoder_deps="libx264"
2658 libx264rgb_encoder_deps="libx264"
2659 libx264rgb_encoder_select="libx264_encoder"
2660 libx265_encoder_deps="libx265"
2661 libxavs_encoder_deps="libxavs"
2662 libxvid_encoder_deps="libxvid"
2663 libutvideo_decoder_deps="libutvideo"
2664 libutvideo_encoder_deps="libutvideo"
2665 libzvbi_teletext_decoder_deps="libzvbi"
2666 nvenc_encoder_deps="nvenc"
2667 nvenc_h264_encoder_deps="nvenc"
2668 nvenc_hevc_encoder_deps="nvenc"
2669
2670 # demuxers / muxers
2671 ac3_demuxer_select="ac3_parser"
2672 asf_demuxer_select="riffdec"
2673 asf_o_demuxer_select="riffdec"
2674 asf_muxer_select="riffenc"
2675 asf_stream_muxer_select="asf_muxer"
2676 avi_demuxer_select="riffdec exif"
2677 avi_muxer_select="riffenc"
2678 avisynth_demuxer_deps="avisynth"
2679 avisynth_demuxer_select="riffdec"
2680 caf_demuxer_select="riffdec"
2681 dash_muxer_select="mp4_muxer"
2682 dirac_demuxer_select="dirac_parser"
2683 dts_demuxer_select="dca_parser"
2684 dtshd_demuxer_select="dca_parser"
2685 dv_demuxer_select="dvprofile"
2686 dv_muxer_select="dvprofile"
2687 dxa_demuxer_select="riffdec"
2688 eac3_demuxer_select="ac3_parser"
2689 f4v_muxer_select="mov_muxer"
2690 flac_demuxer_select="flac_parser"
2691 hds_muxer_select="flv_muxer"
2692 hls_muxer_select="mpegts_muxer"
2693 image2_alias_pix_demuxer_select="image2_demuxer"
2694 image2_brender_pix_demuxer_select="image2_demuxer"
2695 ipod_muxer_select="mov_muxer"
2696 ismv_muxer_select="mov_muxer"
2697 libnut_demuxer_deps="libnut"
2698 libnut_muxer_deps="libnut"
2699 matroska_audio_muxer_select="matroska_muxer"
2700 matroska_demuxer_select="riffdec"
2701 matroska_demuxer_suggest="bzlib lzo zlib"
2702 matroska_muxer_select="riffenc"
2703 mmf_muxer_select="riffenc"
2704 mov_demuxer_select="riffdec"
2705 mov_demuxer_suggest="zlib"
2706 mov_muxer_select="riffenc rtpenc_chain"
2707 mp3_demuxer_select="mpegaudio_parser"
2708 mp4_muxer_select="mov_muxer"
2709 mpegts_muxer_select="adts_muxer latm_muxer"
2710 mpegtsraw_demuxer_select="mpegts_demuxer"
2711 mxf_d10_muxer_select="mxf_muxer"
2712 mxf_opatom_muxer_select="mxf_muxer"
2713 nut_muxer_select="riffenc"
2714 nuv_demuxer_select="riffdec"
2715 oga_muxer_select="ogg_muxer"
2716 ogg_demuxer_select="dirac_parse"
2717 opus_muxer_select="ogg_muxer"
2718 psp_muxer_select="mov_muxer"
2719 rtp_demuxer_select="sdp_demuxer"
2720 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2721 rtsp_demuxer_select="http_protocol rtpdec"
2722 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2723 sap_demuxer_select="sdp_demuxer"
2724 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2725 sdp_demuxer_select="rtpdec"
2726 smoothstreaming_muxer_select="ismv_muxer"
2727 spdif_muxer_select="aac_parser"
2728 spx_muxer_select="ogg_muxer"
2729 tak_demuxer_select="tak_parser"
2730 tg2_muxer_select="mov_muxer"
2731 tgp_muxer_select="mov_muxer"
2732 vobsub_demuxer_select="mpegps_demuxer"
2733 w64_demuxer_select="wav_demuxer"
2734 w64_muxer_select="wav_muxer"
2735 wav_demuxer_select="riffdec"
2736 wav_muxer_select="riffenc"
2737 webm_muxer_select="riffenc"
2738 wtv_demuxer_select="riffdec"
2739 wtv_muxer_select="riffenc"
2740 xmv_demuxer_select="riffdec"
2741 xwma_demuxer_select="riffdec"
2742
2743 # indevs / outdevs
2744 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2745 alsa_outdev_deps="alsa_asoundlib_h"
2746 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2747 avfoundation_indev_select="avfoundation"
2748 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2749 caca_outdev_deps="libcaca"
2750 decklink_outdev_deps="decklink pthreads"
2751 decklink_outdev_extralibs="-lstdc++"
2752 decklink_indev_deps="decklink pthreads"
2753 decklink_indev_extralibs="-lstdc++"
2754 dshow_indev_deps="IBaseFilter"
2755 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2756 dv1394_indev_deps="dv1394"
2757 dv1394_indev_select="dv_demuxer"
2758 fbdev_indev_deps="linux_fb_h"
2759 fbdev_outdev_deps="linux_fb_h"
2760 gdigrab_indev_deps="CreateDIBSection"
2761 gdigrab_indev_extralibs="-lgdi32"
2762 gdigrab_indev_select="bmp_decoder"
2763 iec61883_indev_deps="libiec61883"
2764 jack_indev_deps="jack_jack_h sem_timedwait"
2765 lavfi_indev_deps="avfilter"
2766 libcdio_indev_deps="libcdio"
2767 libdc1394_indev_deps="libdc1394"
2768 libv4l2_indev_deps="libv4l2"
2769 openal_indev_deps="openal"
2770 opengl_outdev_deps="opengl"
2771 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2772 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2773 pulse_indev_deps="libpulse"
2774 pulse_outdev_deps="libpulse"
2775 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2776 qtkit_indev_select="qtkit"
2777 sdl_outdev_deps="sdl"
2778 sndio_indev_deps="sndio_h"
2779 sndio_outdev_deps="sndio_h"
2780 v4l_indev_deps="linux_videodev_h"
2781 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2782 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2783 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2784 vfwcap_indev_extralibs="-lavicap32"
2785 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2786 xv_outdev_extralibs="-lXv -lX11 -lXext"
2787 x11grab_indev_deps="x11grab"
2788 x11grab_xcb_indev_deps="libxcb"
2789
2790 # protocols
2791 async_protocol_deps="threads"
2792 bluray_protocol_deps="libbluray"
2793 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2794 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2795 ffrtmpcrypt_protocol_select="tcp_protocol"
2796 ffrtmphttp_protocol_deps="!librtmp_protocol"
2797 ffrtmphttp_protocol_select="http_protocol"
2798 ftp_protocol_select="tcp_protocol"
2799 gopher_protocol_select="network"
2800 http_protocol_select="tcp_protocol"
2801 httpproxy_protocol_select="tcp_protocol"
2802 https_protocol_select="tls_protocol"
2803 icecast_protocol_select="http_protocol"
2804 librtmp_protocol_deps="librtmp"
2805 librtmpe_protocol_deps="librtmp"
2806 librtmps_protocol_deps="librtmp"
2807 librtmpt_protocol_deps="librtmp"
2808 librtmpte_protocol_deps="librtmp"
2809 libsmbclient_protocol_deps="libsmbclient gplv3"
2810 libssh_protocol_deps="libssh"
2811 mmsh_protocol_select="http_protocol"
2812 mmst_protocol_select="network"
2813 rtmp_protocol_deps="!librtmp_protocol"
2814 rtmp_protocol_select="tcp_protocol"
2815 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2816 rtmps_protocol_deps="!librtmp_protocol"
2817 rtmps_protocol_select="tls_protocol"
2818 rtmpt_protocol_select="ffrtmphttp_protocol"
2819 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2820 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2821 rtp_protocol_select="udp_protocol"
2822 sctp_protocol_deps="struct_sctp_event_subscribe"
2823 sctp_protocol_select="network"
2824 srtp_protocol_select="rtp_protocol"
2825 tcp_protocol_select="network"
2826 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2827 tls_gnutls_protocol_select="tcp_protocol"
2828 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2829 tls_openssl_protocol_select="tcp_protocol"
2830 tls_schannel_protocol_deps="schannel"
2831 tls_schannel_protocol_select="tcp_protocol"
2832 tls_securetransport_protocol_deps="securetransport"
2833 tls_securetransport_protocol_select="tcp_protocol"
2834 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2835 udp_protocol_select="network"
2836 udplite_protocol_select="network"
2837 unix_protocol_deps="sys_un_h"
2838 unix_protocol_select="network"
2839
2840 # filters
2841 amovie_filter_deps="avcodec avformat"
2842 aresample_filter_deps="swresample"
2843 ass_filter_deps="libass"
2844 asyncts_filter_deps="avresample"
2845 atempo_filter_deps="avcodec"
2846 atempo_filter_select="rdft"
2847 azmq_filter_deps="libzmq"
2848 blackframe_filter_deps="gpl"
2849 boxblur_filter_deps="gpl"
2850 bs2b_filter_deps="libbs2b"
2851 colormatrix_filter_deps="gpl"
2852 cover_rect_filter_deps="avcodec avformat gpl"
2853 cropdetect_filter_deps="gpl"
2854 delogo_filter_deps="gpl"
2855 deshake_filter_select="pixelutils"
2856 drawtext_filter_deps="libfreetype"
2857 ebur128_filter_deps="gpl"
2858 eq_filter_deps="gpl"
2859 fftfilt_filter_deps="avcodec"
2860 fftfilt_filter_select="rdft"
2861 flite_filter_deps="libflite"
2862 find_rect_filter_deps="avcodec avformat gpl"
2863 frei0r_filter_deps="frei0r dlopen"
2864 frei0r_src_filter_deps="frei0r dlopen"
2865 fspp_filter_deps="gpl"
2866 geq_filter_deps="gpl"
2867 histeq_filter_deps="gpl"
2868 hqdn3d_filter_deps="gpl"
2869 interlace_filter_deps="gpl"
2870 kerndeint_filter_deps="gpl"
2871 ladspa_filter_deps="ladspa dlopen"
2872 mcdeint_filter_deps="avcodec gpl"
2873 movie_filter_deps="avcodec avformat"
2874 mpdecimate_filter_deps="gpl"
2875 mpdecimate_filter_select="pixelutils"
2876 mptestsrc_filter_deps="gpl"
2877 negate_filter_deps="lut_filter"
2878 perspective_filter_deps="gpl"
2879 pp7_filter_deps="gpl"
2880 ocr_filter_deps="libtesseract"
2881 ocv_filter_deps="libopencv"
2882 owdenoise_filter_deps="gpl"
2883 pan_filter_deps="swresample"
2884 phase_filter_deps="gpl"
2885 pp_filter_deps="gpl postproc"
2886 pullup_filter_deps="gpl"
2887 removelogo_filter_deps="avcodec avformat swscale"
2888 repeatfields_filter_deps="gpl"
2889 resample_filter_deps="avresample"
2890 rubberband_filter_deps="librubberband"
2891 sab_filter_deps="gpl swscale"
2892 scale_filter_deps="swscale"
2893 scale2ref_filter_deps="swscale"
2894 select_filter_select="pixelutils"
2895 smartblur_filter_deps="gpl swscale"
2896 showcqt_filter_deps="avcodec avformat swscale"
2897 showcqt_filter_select="fft"
2898 showfreqs_filter_deps="avcodec"
2899 showfreqs_filter_select="fft"
2900 showspectrum_filter_deps="avcodec"
2901 showspectrum_filter_select="fft"
2902 showspectrumpic_filter_deps="avcodec"
2903 showspectrumpic_filter_select="fft"
2904 sofalizer_filter_deps="netcdf avcodec"
2905 sofalizer_filter_select="fft"
2906 spectrumsynth_filter_deps="avcodec"
2907 spectrumsynth_filter_select="fft"
2908 spp_filter_deps="gpl avcodec"
2909 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2910 stereo3d_filter_deps="gpl"
2911 subtitles_filter_deps="avformat avcodec libass"
2912 super2xsai_filter_deps="gpl"
2913 tinterlace_filter_deps="gpl"
2914 vidstabdetect_filter_deps="libvidstab"
2915 vidstabtransform_filter_deps="libvidstab"
2916 pixfmts_super2xsai_test_deps="super2xsai_filter"
2917 tinterlace_merge_test_deps="tinterlace_filter"
2918 tinterlace_pad_test_deps="tinterlace_filter"
2919 uspp_filter_deps="gpl avcodec"
2920 zmq_filter_deps="libzmq"
2921 zoompan_filter_deps="swscale"
2922 zscale_filter_deps="libzimg"
2923
2924 # examples
2925 avio_reading="avformat avcodec avutil"
2926 avio_dir_cmd="avformat avutil"
2927 avcodec_example_deps="avcodec avutil"
2928 decoding_encoding_example_deps="avcodec avformat avutil"
2929 demuxing_decoding_example_deps="avcodec avformat avutil"
2930 extract_mvs_example_deps="avcodec avformat avutil"
2931 filter_audio_example_deps="avfilter avutil"
2932 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2933 filtering_video_example_deps="avfilter avcodec avformat avutil"
2934 metadata_example_deps="avformat avutil"
2935 muxing_example_deps="avcodec avformat avutil swscale"
2936 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2937 remuxing_example_deps="avcodec avformat avutil"
2938 resampling_audio_example_deps="avutil swresample"
2939 scaling_video_example_deps="avutil swscale"
2940 transcode_aac_example_deps="avcodec avformat swresample"
2941 transcoding_example_deps="avfilter avcodec avformat avutil"
2942
2943 # libraries, in linking order
2944 avcodec_deps="avutil"
2945 avdevice_deps="avformat avcodec avutil"
2946 avfilter_deps="avutil"
2947 avformat_deps="avcodec avutil"
2948 avresample_deps="avutil"
2949 postproc_deps="avutil gpl"
2950 swresample_deps="avutil"
2951 swscale_deps="avutil"
2952
2953 # programs
2954 ffmpeg_deps="avcodec avfilter avformat swresample"
2955 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2956                null_filter
2957                setpts_filter trim_filter"
2958 ffplay_deps="avcodec avformat swscale swresample sdl"
2959 ffplay_libs='$sdl_libs'
2960 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2961 ffprobe_deps="avcodec avformat"
2962 ffserver_deps="avformat fork sarestart"
2963 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2964
2965 # documentation
2966 podpages_deps="perl"
2967 manpages_deps="perl pod2man"
2968 htmlpages_deps="perl"
2969 htmlpages_deps_any="makeinfo_html texi2html"
2970 txtpages_deps="perl makeinfo"
2971 doc_deps_any="manpages htmlpages podpages txtpages"
2972
2973 # default parameters
2974
2975 logfile="config.log"
2976
2977 # installation paths
2978 prefix_default="/usr/local"
2979 bindir_default='${prefix}/bin'
2980 datadir_default='${prefix}/share/ffmpeg'
2981 docdir_default='${prefix}/share/doc/ffmpeg'
2982 incdir_default='${prefix}/include'
2983 libdir_default='${prefix}/lib'
2984 mandir_default='${prefix}/share/man'
2985
2986 # toolchain
2987 ar_default="ar"
2988 cc_default="gcc"
2989 cxx_default="g++"
2990 host_cc_default="gcc"
2991 cp_f="cp -f"
2992 doxygen_default="doxygen"
2993 install="install"
2994 ln_s="ln -s -f"
2995 nm_default="nm -g"
2996 objformat="elf"
2997 pkg_config_default=pkg-config
2998 ranlib_default="ranlib"
2999 strip_default="strip"
3000 yasmexe_default="yasm"
3001 windres_default="windres"
3002
3003 # OS
3004 target_os_default=$(tolower $(uname -s))
3005 host_os=$target_os_default
3006
3007 # machine
3008 if test "$target_os_default" = aix; then
3009     arch_default=$(uname -p)
3010     strip_default="strip -X32_64"
3011 else
3012     arch_default=$(uname -m)
3013 fi
3014 cpu="generic"
3015 intrinsics="none"
3016
3017 # configurable options
3018 enable $PROGRAM_LIST
3019 enable $DOCUMENT_LIST
3020 enable $EXAMPLE_LIST
3021 enable $(filter_out avresample $LIBRARY_LIST)
3022 enable stripping
3023
3024 enable asm
3025 enable debug
3026 enable doc
3027 enable faan faandct faanidct
3028 enable optimizations
3029 enable runtime_cpudetect
3030 enable safe_bitstream_reader
3031 enable static
3032 enable swscale_alpha
3033 enable valgrind_backtrace
3034
3035 sws_max_filter_size_default=256
3036 set_default sws_max_filter_size
3037
3038 # Enable hwaccels by default.
3039 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3040 enable xlib
3041
3042 # build settings
3043 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3044 LIBPREF="lib"
3045 LIBSUF=".a"
3046 FULLNAME='$(NAME)$(BUILDSUF)'
3047 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3048 SLIBPREF="lib"
3049 SLIBSUF=".so"
3050 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3051 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3052 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3053 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3054 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3055 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3056
3057 asflags_filter=echo
3058 cflags_filter=echo
3059 ldflags_filter=echo
3060
3061 AS_C='-c'
3062 AS_O='-o $@'
3063 CC_C='-c'
3064 CC_E='-E -o $@'
3065 CC_O='-o $@'
3066 CXX_C='-c'
3067 CXX_O='-o $@'
3068 OBJCC_C='-c'
3069 OBJCC_E='-E -o $@'
3070 OBJCC_O='-o $@'
3071 LD_O='-o $@'
3072 LD_LIB='-l%'
3073 LD_PATH='-L'
3074 HOSTCC_C='-c'
3075 HOSTCC_E='-E -o $@'
3076 HOSTCC_O='-o $@'
3077 HOSTLD_O='-o $@'
3078
3079 host_libs='-lm'
3080 host_cflags_filter=echo
3081 host_ldflags_filter=echo
3082
3083 target_path='$(CURDIR)'
3084
3085 # since the object filename is not given with the -MM flag, the compiler
3086 # is only able to print the basename, and we must add the path ourselves
3087 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3088 DEPFLAGS='-MM'
3089
3090 # find source path
3091 if test -f configure; then
3092     source_path=.
3093 else
3094     source_path=$(cd $(dirname "$0"); pwd)
3095     case "$source_path" in
3096         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3097     esac
3098     test -e "$source_path/config.h" &&
3099         die "Out of tree builds are impossible with config.h in source dir."
3100 fi
3101
3102 for v in "$@"; do
3103     r=${v#*=}
3104     l=${v%"$r"}
3105     r=$(sh_quote "$r")
3106     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3107 done
3108
3109 find_things(){
3110     thing=$1
3111     pattern=$2
3112     file=$source_path/$3
3113     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3114 }
3115
3116 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3117 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3118 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3119 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3120 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3121 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3122 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3123 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3124 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3125 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3126 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3127
3128 ALL_COMPONENTS="
3129     $BSF_LIST
3130     $DECODER_LIST
3131     $DEMUXER_LIST
3132     $ENCODER_LIST
3133     $FILTER_LIST
3134     $HWACCEL_LIST
3135     $INDEV_LIST
3136     $MUXER_LIST
3137     $OUTDEV_LIST
3138     $PARSER_LIST
3139     $PROTOCOL_LIST
3140 "
3141
3142 for n in $COMPONENT_LIST; do
3143     v=$(toupper ${n%s})_LIST
3144     eval enable \$$v
3145     eval ${n}_if_any="\$$v"
3146 done
3147
3148 enable $ARCH_EXT_LIST
3149
3150 die_unknown(){
3151     echo "Unknown option \"$1\"."
3152     echo "See $0 --help for available options."
3153     exit 1
3154 }
3155
3156 print_in_columns() {
3157     cols=$(expr $ncols / 24)
3158     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3159 }
3160
3161 show_list() {
3162     suffix=_$1
3163     shift
3164     echo $* | sed s/$suffix//g | print_in_columns
3165     exit 0
3166 }
3167
3168 rand_list(){
3169     IFS=', '
3170     set -- $*
3171     unset IFS
3172     for thing; do
3173         comp=${thing%:*}
3174         prob=${thing#$comp}
3175         prob=${prob#:}
3176         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3177         echo "prob ${prob:-0.5}"
3178         printf '%s\n' $comp
3179     done
3180 }
3181
3182 do_random(){
3183     action=$1
3184     shift
3185     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3186     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3187 }
3188
3189 for opt do
3190     optval="${opt#*=}"
3191     case "$opt" in
3192         --extra-ldflags=*)
3193             add_ldflags $optval
3194         ;;
3195         --extra-ldexeflags=*)
3196             add_ldexeflags $optval
3197         ;;
3198         --extra-ldlibflags=*)
3199             add_ldlibflags $optval
3200         ;;
3201         --extra-libs=*)
3202             add_extralibs $optval
3203         ;;
3204         --disable-devices)
3205             disable $INDEV_LIST $OUTDEV_LIST
3206         ;;
3207         --enable-debug=*)
3208             debuglevel="$optval"
3209         ;;
3210         --disable-programs)
3211             disable $PROGRAM_LIST
3212         ;;
3213         --disable-everything)
3214             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3215         ;;
3216         --disable-all)
3217             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3218             disable $LIBRARY_LIST $PROGRAM_LIST doc
3219             enable avutil
3220         ;;
3221         --enable-random|--disable-random)
3222             action=${opt%%-random}
3223             do_random ${action#--} $COMPONENT_LIST
3224         ;;
3225         --enable-random=*|--disable-random=*)
3226             action=${opt%%-random=*}
3227             do_random ${action#--} $optval
3228         ;;
3229         --enable-*=*|--disable-*=*)
3230             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3231             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3232             eval list=\$$(toupper $thing)_LIST
3233             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3234             list=$(filter "$name" $list)
3235             [ "$list" = "" ] && warn "Option $opt did not match anything"
3236             $action $list
3237         ;;
3238         --enable-?*|--disable-?*)
3239             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3240             if is_in $option $COMPONENT_LIST; then
3241                 test $action = disable && action=unset
3242                 eval $action \$$(toupper ${option%s})_LIST
3243             elif is_in $option $CMDLINE_SELECT; then
3244                 $action $option
3245             else
3246                 die_unknown $opt
3247             fi
3248         ;;
3249         --list-*)
3250             NAME="${opt#--list-}"
3251             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3252             NAME=${NAME%s}
3253             eval show_list $NAME \$$(toupper $NAME)_LIST
3254         ;;
3255         --help|-h) show_help
3256         ;;
3257         --fatal-warnings) enable fatal_warnings
3258         ;;
3259         *)
3260             optname="${opt%%=*}"
3261             optname="${optname#--}"
3262             optname=$(echo "$optname" | sed 's/-/_/g')
3263             if is_in $optname $CMDLINE_SET; then
3264                 eval $optname='$optval'
3265             elif is_in $optname $CMDLINE_APPEND; then
3266                 append $optname "$optval"
3267             else
3268                 die_unknown $opt
3269             fi
3270         ;;
3271     esac
3272 done
3273
3274 for e in $env; do
3275     eval "export $e"
3276 done
3277
3278 disabled logging && logfile=/dev/null
3279
3280 # Disable all the library-specific components if the library itself
3281 # is disabled, see AVCODEC_LIST and following _LIST variables.
3282
3283 disable_components(){
3284     disabled ${1} && disable $(
3285         eval components="\$$(toupper ${1})_COMPONENTS"
3286         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3287     )
3288 }
3289
3290 map 'disable_components $v' $LIBRARY_LIST
3291
3292 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3293 set >> $logfile
3294
3295 test -n "$valgrind" && toolchain="valgrind-memcheck"
3296
3297 case "$toolchain" in
3298     clang-asan)
3299         cc_default="clang"
3300         add_cflags  -fsanitize=address
3301         add_ldflags -fsanitize=address
3302     ;;
3303     clang-tsan)
3304         cc_default="clang"
3305         add_cflags  -fsanitize=thread -pie
3306         add_ldflags -fsanitize=thread -pie
3307     ;;
3308     clang-usan)
3309         cc_default="clang"
3310         add_cflags  -fsanitize=undefined
3311         add_ldflags -fsanitize=undefined
3312     ;;
3313     gcc-asan)
3314         cc_default="gcc"
3315         add_cflags  -fsanitize=address
3316         add_ldflags -fsanitize=address
3317     ;;
3318     gcc-tsan)
3319         cc_default="gcc"
3320         add_cflags  -fsanitize=thread -pie -fPIC
3321         add_ldflags -fsanitize=thread -pie -fPIC
3322     ;;
3323     gcc-usan)
3324         cc_default="gcc"
3325         add_cflags  -fsanitize=undefined
3326         add_ldflags -fsanitize=undefined
3327     ;;
3328     valgrind-massif)
3329         target_exec_default=${valgrind:-"valgrind"}
3330         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"
3331     ;;
3332     valgrind-memcheck)
3333         target_exec_default=${valgrind:-"valgrind"}
3334         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3335     ;;
3336     msvc)
3337         # Check whether the current MSVC version needs the C99 converter.
3338         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3339         # support enough of C99 to build ffmpeg. Default to the new
3340         # behaviour if the regexp was unable to match anything, since this
3341         # successfully parses the version number of existing supported
3342         # versions that require the converter (MSVC 2010 and 2012).
3343         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3344         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3345             cc_default="cl"
3346         else
3347             cc_default="c99wrap cl"
3348         fi
3349         ld_default="$source_path/compat/windows/mslink"
3350         nm_default="dumpbin -symbols"
3351         ar_default="lib"
3352         case "$arch" in
3353         arm*)
3354             as_default="armasm"
3355             ;;
3356         esac
3357         target_os_default="win32"
3358         # Use a relative path for TMPDIR. This makes sure all the
3359         # ffconf temp files are written with a relative path, avoiding
3360         # issues with msys/win32 path conversion for MSVC parameters
3361         # such as -Fo<file> or -out:<file>.
3362         TMPDIR=.
3363     ;;
3364     icl)
3365         cc_default="icl"
3366         ld_default="xilink"
3367         nm_default="dumpbin -symbols"
3368         ar_default="xilib"
3369         target_os_default="win32"
3370         TMPDIR=.
3371     ;;
3372     gcov)
3373         add_cflags  -fprofile-arcs -ftest-coverage
3374         add_ldflags -fprofile-arcs -ftest-coverage
3375     ;;
3376     hardened)
3377         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3378         add_cflags   -fno-strict-overflow -fstack-protector-all
3379         add_ldflags  -Wl,-z,relro -Wl,-z,now
3380     ;;
3381     ?*)
3382         die "Unknown toolchain $toolchain"
3383     ;;
3384 esac
3385
3386 test -n "$cross_prefix" && enable cross_compile
3387
3388 if enabled cross_compile; then
3389     test -n "$arch" && test -n "$target_os" ||
3390         die "Must specify target arch and OS when cross-compiling"
3391 fi
3392
3393 ar_default="${cross_prefix}${ar_default}"
3394 cc_default="${cross_prefix}${cc_default}"
3395 cxx_default="${cross_prefix}${cxx_default}"
3396 nm_default="${cross_prefix}${nm_default}"
3397 pkg_config_default="${cross_prefix}${pkg_config_default}"
3398 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3399     ranlib_default="${cross_prefix}${ranlib_default} -D"
3400 else
3401     ranlib_default="${cross_prefix}${ranlib_default}"
3402 fi
3403 strip_default="${cross_prefix}${strip_default}"
3404 windres_default="${cross_prefix}${windres_default}"
3405
3406 sysinclude_default="${sysroot}/usr/include"
3407
3408 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3409     target_exec target_os yasmexe
3410 enabled cross_compile || host_cc_default=$cc
3411 set_default host_cc
3412
3413 pkg_config_fail_message=""
3414 if ! $pkg_config --version >/dev/null 2>&1; then
3415     warn "$pkg_config not found, library detection may fail."
3416     pkg_config=false
3417 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3418     pkg_config_fail_message="
3419 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3420 fi
3421
3422 if test $doxygen != $doxygen_default && \
3423   ! $doxygen --version >/dev/null 2>&1; then
3424     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3425 fi
3426
3427 exesuf() {
3428     case $1 in
3429         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3430     esac
3431 }
3432
3433 EXESUF=$(exesuf $target_os)
3434 HOSTEXESUF=$(exesuf $host_os)
3435
3436 # set temporary file name
3437 : ${TMPDIR:=$TEMPDIR}
3438 : ${TMPDIR:=$TMP}
3439 : ${TMPDIR:=/tmp}
3440
3441 if [ -n "$tempprefix" ] ; then
3442     mktemp(){
3443         echo $tempprefix.${HOSTNAME}.${UID}
3444     }
3445 elif ! check_cmd mktemp -u XXXXXX; then
3446     # simple replacement for missing mktemp
3447     # NOT SAFE FOR GENERAL USE
3448     mktemp(){
3449         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3450     }
3451 fi
3452
3453 tmpfile(){
3454     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3455         (set -C; exec > $tmp) 2>/dev/null ||
3456         die "Unable to create temporary file in $TMPDIR."
3457     append TMPFILES $tmp
3458     eval $1=$tmp
3459 }
3460
3461 trap 'rm -f -- $TMPFILES' EXIT
3462
3463 tmpfile TMPASM .asm
3464 tmpfile TMPC   .c
3465 tmpfile TMPCPP .cpp
3466 tmpfile TMPE   $EXESUF
3467 tmpfile TMPH   .h
3468 tmpfile TMPM   .m
3469 tmpfile TMPO   .o
3470 tmpfile TMPS   .S
3471 tmpfile TMPSH  .sh
3472 tmpfile TMPV   .ver
3473
3474 unset -f mktemp
3475
3476 chmod +x $TMPE
3477
3478 # make sure we can execute files in $TMPDIR
3479 cat > $TMPSH 2>> $logfile <<EOF
3480 #! /bin/sh
3481 EOF
3482 chmod +x $TMPSH >> $logfile 2>&1
3483 if ! $TMPSH >> $logfile 2>&1; then
3484     cat <<EOF
3485 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3486 variable to another directory and make sure that it is not mounted noexec.
3487 EOF
3488     die "Sanity test failed."
3489 fi
3490
3491 armasm_flags(){
3492     for flag; do
3493         case $flag in
3494             # Filter out MSVC cl.exe options from cflags that shouldn't
3495             # be passed to gas-preprocessor
3496             -M[TD]*)                                            ;;
3497             *)                  echo $flag                      ;;
3498         esac
3499    done
3500 }
3501
3502 ccc_flags(){
3503     for flag; do
3504         case $flag in
3505             -std=c99)           echo -c99                       ;;
3506             -mcpu=*)            echo -arch ${flag#*=}           ;;
3507             -mieee)             echo -ieee                      ;;
3508             -O*|-fast)          echo $flag                      ;;
3509             -fno-math-errno)    echo -assume nomath_errno       ;;
3510             -g)                 echo -g3                        ;;
3511             -Wall)              echo -msg_enable level2         ;;
3512             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3513             -Wl,*)              echo $flag                      ;;
3514             -f*|-W*)                                            ;;
3515             *)                  echo $flag                      ;;
3516         esac
3517    done
3518 }
3519
3520 cparser_flags(){
3521     for flag; do
3522         case $flag in
3523             -Wno-switch)             echo -Wno-switch-enum ;;
3524             -Wno-format-zero-length) ;;
3525             -Wdisabled-optimization) ;;
3526             -Wno-pointer-sign)       echo -Wno-other ;;
3527             *)                       echo $flag ;;
3528         esac
3529     done
3530 }
3531
3532 msvc_common_flags(){
3533     for flag; do
3534         case $flag in
3535             # In addition to specifying certain flags under the compiler
3536             # specific filters, they must be specified here as well or else the
3537             # generic catch all at the bottom will print the original flag.
3538             -Wall)                ;;
3539             -std=c99)             ;;
3540             # Common flags
3541             -fomit-frame-pointer) ;;
3542             -g)                   echo -Z7 ;;
3543             -fno-math-errno)      ;;
3544             -fno-common)          ;;
3545             -fno-signed-zeros)    ;;
3546             -fPIC)                ;;
3547             -mthumb)              ;;
3548             -march=*)             ;;
3549             -lz)                  echo zlib.lib ;;
3550             -lavifil32)           echo vfw32.lib ;;
3551             -lavicap32)           echo vfw32.lib user32.lib ;;
3552             -l*)                  echo ${flag#-l}.lib ;;
3553             -LARGEADDRESSAWARE)   echo $flag ;;
3554             -L*)                  echo -libpath:${flag#-L} ;;
3555             *)                    echo $flag ;;
3556         esac
3557     done
3558 }
3559
3560 msvc_flags(){
3561     msvc_common_flags "$@"
3562     for flag; do
3563         case $flag in
3564             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3565                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3566                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3567                                        -wd4307 \
3568                                        -wd4273 -wd4554 -wd4701 ;;
3569         esac
3570     done
3571 }
3572
3573 icl_flags(){
3574     msvc_common_flags "$@"
3575     for flag; do
3576         case $flag in
3577             # Despite what Intel's documentation says -Wall, which is supported
3578             # on Windows, does enable remarks so disable them here.
3579             -Wall)                echo $flag -Qdiag-disable:remark ;;
3580             -std=c99)             echo -Qstd=c99 ;;
3581             -flto)                echo -ipo ;;
3582         esac
3583     done
3584 }
3585
3586 icc_flags(){
3587     for flag; do
3588         case $flag in
3589             -flto)                echo -ipo ;;
3590             *)                    echo $flag ;;
3591         esac
3592     done
3593 }
3594
3595 pgi_flags(){
3596     for flag; do
3597         case $flag in
3598             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3599             -fomit-frame-pointer) echo -Mnoframe ;;
3600             -g)                   echo -gopt ;;
3601             *)                    echo $flag ;;
3602         esac
3603     done
3604 }
3605
3606 suncc_flags(){
3607     for flag; do
3608         case $flag in
3609             -march=*|-mcpu=*)
3610                 case "${flag#*=}" in
3611                     native)                   echo -xtarget=native       ;;
3612                     v9|niagara)               echo -xarch=sparc          ;;
3613                     ultrasparc)               echo -xarch=sparcvis       ;;
3614                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3615                     i586|pentium)             echo -xchip=pentium        ;;
3616                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3617                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3618                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3619                     pentium4*)          echo -xtarget=pentium4           ;;
3620                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3621                     *-sse3)             echo -xarch=sse3                 ;;
3622                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3623                     bonnell)                   echo -xarch=ssse3         ;;
3624                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3625                     westmere)                  echo -xtarget=westmere    ;;
3626                     silvermont)                echo -xarch=sse4_2        ;;
3627                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3628                     core-avx*|ivybridge|haswell|broadwell)
3629                                                echo -xarch=avx           ;;
3630                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3631                     btver1)                    echo -xarch=amdsse4a      ;;
3632                     btver2|bdver*)             echo -xarch=avx           ;;
3633                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3634                     k8|opteron|athlon64|athlon-fx)
3635                                                echo -xarch=sse2a         ;;
3636                     athlon*)                   echo -xarch=pentium_proa  ;;
3637                 esac
3638                 ;;
3639             -std=c99)             echo -xc99              ;;
3640             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3641             -fPIC)                echo -KPIC -xcode=pic32 ;;
3642             -W*,*)                echo $flag              ;;
3643             -f*-*|-W*|-mimpure-text)                      ;;
3644             -shared)              echo -G                 ;;
3645             *)                    echo $flag              ;;
3646         esac
3647     done
3648 }
3649
3650 tms470_flags(){
3651     for flag; do
3652         case $flag in
3653             -march=*|-mcpu=*)
3654                 case "${flag#*=}" in
3655                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3656                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3657                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3658                     armv6*|arm11*)          echo -mv=6   ;;
3659                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3660                                             echo -mv=5e  ;;
3661                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3662                 esac
3663                 ;;
3664             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3665             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3666             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3667             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3668             -msoft-float)   echo --float_support=vfplib       ;;
3669             -O[0-3]|-mf=*)  echo $flag                        ;;
3670             -g)             echo -g -mn                       ;;
3671             -pds=*)         echo $flag                        ;;
3672             -D*|-I*)        echo $flag                        ;;
3673             --gcc|--abi=*)  echo $flag                        ;;
3674             -me)            echo $flag                        ;;
3675         esac
3676     done
3677 }
3678
3679 probe_cc(){
3680     pfx=$1
3681     _cc=$2
3682     first=$3
3683
3684     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3685     unset _ld_o _ldflags _ld_lib _ld_path
3686     unset _depflags _DEPCMD _DEPFLAGS
3687     _flags_filter=echo
3688
3689     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3690         true # no-op to avoid reading stdin in following checks
3691     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3692         _type=llvm_gcc
3693         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3694         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3695         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3696         _cflags_speed='-O3'
3697         _cflags_size='-Os'
3698     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3699         _type=gcc
3700         gcc_version=$($_cc --version | head -n1)
3701         gcc_basever=$($_cc -dumpversion)
3702         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3703         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3704         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3705         case $gcc_basever in
3706             2) ;;
3707             2.*) ;;
3708             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3709         esac
3710         if [ "$first" = true ]; then
3711             case $gcc_basever in
3712                 4.2*)
3713                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3714             esac
3715         fi
3716         _cflags_speed='-O3'
3717         _cflags_size='-Os'
3718     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3719         _type=icc
3720         _ident=$($_cc --version | head -n1)
3721         _depflags='-MMD'
3722         _cflags_speed='-O3'
3723         _cflags_size='-Os'
3724         _cflags_noopt='-O1'
3725         _flags_filter=icc_flags
3726     elif $_cc -v 2>&1 | grep -q xlc; then
3727         _type=xlc
3728         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3729         _cflags_speed='-O5'
3730         _cflags_size='-O5 -qcompact'
3731     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3732         _type=ccc
3733         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3734         _DEPFLAGS='-M'
3735         _cflags_speed='-fast'
3736         _cflags_size='-O1'
3737         _flags_filter=ccc_flags
3738     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3739         test -d "$sysroot" || die "No valid sysroot specified."
3740         _type=armcc
3741         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3742         armcc_conf="$PWD/armcc.conf"
3743         $_cc --arm_linux_configure                 \
3744              --arm_linux_config_file="$armcc_conf" \
3745              --configure_sysroot="$sysroot"        \
3746              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3747              die "Error creating armcc configuration file."
3748         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3749         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3750         as_default="${cross_prefix}gcc"
3751         _depflags='-MMD'
3752         _cflags_speed='-O3'
3753         _cflags_size='-Os'
3754     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3755         _type=tms470
3756         _ident=$($_cc -version | head -n1 | tr -s ' ')
3757         _flags='--gcc --abi=eabi -me'
3758         _cc_e='-ppl -fe=$@'
3759         _cc_o='-fe=$@'
3760         _depflags='-ppa -ppd=$(@:.o=.d)'
3761         _cflags_speed='-O3 -mf=5'
3762         _cflags_size='-O3 -mf=2'
3763         _flags_filter=tms470_flags
3764     elif $_cc -v 2>&1 | grep -q clang; then
3765         _type=clang
3766         _ident=$($_cc --version 2>/dev/null | head -n1)
3767         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3768         _cflags_speed='-O3'
3769         _cflags_size='-Os'
3770     elif $_cc -V 2>&1 | grep -q Sun; then
3771         _type=suncc
3772         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3773         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3774         _DEPFLAGS='-xM1 -xc99'
3775         _ldflags='-std=c99'
3776         _cflags_speed='-O5'
3777         _cflags_size='-O5 -xspace'
3778         _flags_filter=suncc_flags
3779     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3780         _type=pathscale
3781         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3782         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3783         _cflags_speed='-O2'
3784         _cflags_size='-Os'
3785         _flags_filter='filter_out -Wdisabled-optimization'
3786     elif $_cc -v 2>&1 | grep -q Open64; then
3787         _type=open64
3788         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3789         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3790         _cflags_speed='-O2'
3791         _cflags_size='-Os'
3792         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3793     elif $_cc -V 2>&1 | grep -q Portland; then
3794         _type=pgi
3795         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3796         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3797         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3798         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3799         _cflags_noopt="-O"
3800         _flags_filter=pgi_flags
3801     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3802         _type=armasm
3803         _ident=$($_cc | head -n1)
3804         # 4509: "This form of conditional instruction is deprecated"
3805         _flags="-nologo -ignore 4509"
3806         _flags_filter=armasm_flags
3807     elif $_cc 2>&1 | grep -q Intel; then
3808         _type=icl
3809         _ident=$($_cc 2>&1 | head -n1)
3810         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3811         # Not only is O3 broken on 13.x+ but it is slower on all previous
3812         # versions (tested) as well.
3813         _cflags_speed="-O2"
3814         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3815         if $_cc 2>&1 | grep -q Linker; then
3816             _ld_o='-out:$@'
3817         else
3818             _ld_o='-Fe$@'
3819         fi
3820         _cc_o='-Fo$@'
3821         _cc_e='-P'
3822         _flags_filter=icl_flags
3823         _ld_lib='lib%.a'
3824         _ld_path='-libpath:'
3825         # -Qdiag-error to make icl error when seeing certain unknown arguments
3826         _flags='-nologo -Qdiag-error:4044,10157'
3827         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3828         # with MSVC which enables it by default.
3829         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3830         disable stripping
3831     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3832         _type=msvc
3833         _ident=$($_cc 2>&1 | head -n1)
3834         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3835         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3836         _cflags_speed="-O2"
3837         _cflags_size="-O1"
3838         if $_cc -nologo- 2>&1 | grep -q Linker; then
3839             _ld_o='-out:$@'
3840         else
3841             _ld_o='-Fe$@'
3842         fi
3843         _cc_o='-Fo$@'
3844         _cc_e='-P -Fi$@'
3845         _flags_filter=msvc_flags
3846         _ld_lib='lib%.a'
3847         _ld_path='-libpath:'
3848         _flags='-nologo'
3849         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3850         disable stripping
3851     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3852         _type=cparser
3853         _ident=$($_cc --version | head -n1)
3854         _depflags='-MMD'
3855         _cflags_speed='-O4'
3856         _cflags_size='-O2'
3857         _flags_filter=cparser_flags
3858     fi
3859
3860     eval ${pfx}_type=\$_type
3861     eval ${pfx}_ident=\$_ident
3862 }
3863
3864 set_ccvars(){
3865     eval ${1}_C=\${_cc_c-\${${1}_C}}
3866     eval ${1}_E=\${_cc_e-\${${1}_E}}
3867     eval ${1}_O=\${_cc_o-\${${1}_O}}
3868
3869     if [ -n "$_depflags" ]; then
3870         eval ${1}_DEPFLAGS=\$_depflags
3871     else
3872         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3873         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3874         eval DEP${1}FLAGS=\$_flags
3875     fi
3876 }
3877
3878 probe_cc cc "$cc" "true"
3879 cflags_filter=$_flags_filter
3880 cflags_speed=$_cflags_speed
3881 cflags_size=$_cflags_size
3882 cflags_noopt=$_cflags_noopt
3883 add_cflags $_flags $_cflags
3884 cc_ldflags=$_ldflags
3885 set_ccvars CC
3886
3887 probe_cc hostcc "$host_cc"
3888 host_cflags_filter=$_flags_filter
3889 add_host_cflags  $_flags $_cflags
3890 set_ccvars HOSTCC
3891
3892 test -n "$cc_type" && enable $cc_type ||
3893     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3894
3895 : ${as_default:=$cc}
3896 : ${objcc_default:=$cc}
3897 : ${dep_cc_default:=$cc}
3898 : ${ld_default:=$cc}
3899 : ${host_ld_default:=$host_cc}
3900 set_default ar as objcc dep_cc ld host_ld windres
3901
3902 probe_cc as "$as"
3903 asflags_filter=$_flags_filter
3904 add_asflags $_flags $_cflags
3905 set_ccvars AS
3906
3907 probe_cc objcc "$objcc"
3908 objcflags_filter=$_flags_filter
3909 add_objcflags $_flags $_cflags
3910 set_ccvars OBJC
3911
3912 probe_cc ld "$ld"
3913 ldflags_filter=$_flags_filter
3914 add_ldflags $_flags $_ldflags
3915 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3916 LD_O=${_ld_o-$LD_O}
3917 LD_LIB=${_ld_lib-$LD_LIB}
3918 LD_PATH=${_ld_path-$LD_PATH}
3919
3920 probe_cc hostld "$host_ld"
3921 host_ldflags_filter=$_flags_filter
3922 add_host_ldflags $_flags $_ldflags
3923 HOSTLD_O=${_ld_o-$HOSTLD_O}
3924
3925 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3926     probe_cc depcc "$dep_cc"
3927     CCDEP=${_DEPCMD:-$DEPCMD}
3928     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3929     DEPCCFLAGS=$_flags
3930 fi
3931
3932 if $ar 2>&1 | grep -q Microsoft; then
3933     arflags="-nologo"
3934     ar_o='-out:$@'
3935 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3936     arflags="rq"
3937     ar_o='$@'
3938 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3939     arflags='-Xany -r -c'
3940     ar_o='$@'
3941 elif $ar 2>&1 | grep -q "\[D\] "; then
3942     arflags="rcD"
3943     ar_o='$@'
3944 else
3945     arflags="rc"
3946     ar_o='$@'
3947 fi
3948
3949 add_cflags $extra_cflags
3950 add_cxxflags $extra_cxxflags
3951 add_objcflags $extra_objcflags
3952 add_asflags $extra_cflags
3953
3954 if test -n "$sysroot"; then
3955     case "$cc_type" in
3956         gcc|llvm_gcc|clang)
3957             add_cppflags --sysroot="$sysroot"
3958             add_ldflags --sysroot="$sysroot"
3959 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3960             add_cppflags -isysroot "$sysroot"
3961             add_ldflags -isysroot "$sysroot"
3962         ;;
3963         tms470)
3964             add_cppflags -I"$sysinclude"
3965             add_ldflags  --sysroot="$sysroot"
3966         ;;
3967     esac
3968 fi
3969
3970 if test "$cpu" = host; then
3971     enabled cross_compile &&
3972         die "--cpu=host makes no sense when cross-compiling."
3973
3974     case "$cc_type" in
3975         gcc|llvm_gcc)
3976             check_native(){
3977                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3978                 sed -n "/cc1.*$1=/{
3979                             s/.*$1=\\([^ ]*\\).*/\\1/
3980                             p
3981                             q
3982                         }" $TMPE
3983             }
3984             cpu=$(check_native -march || check_native -mcpu)
3985         ;;
3986         clang)
3987             check_native(){
3988                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3989                 sed -n "/cc1.*-target-cpu /{
3990                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3991                             p
3992                             q
3993                         }" $TMPE
3994             }
3995             cpu=$(check_native -march)
3996         ;;
3997     esac
3998
3999     test "${cpu:-host}" = host &&
4000         die "--cpu=host not supported with compiler $cc"
4001 fi
4002
4003 # Deal with common $arch aliases
4004 case "$arch" in
4005     aarch64|arm64)
4006         arch="aarch64"
4007     ;;
4008     arm*|iPad*|iPhone*)
4009         arch="arm"
4010     ;;
4011     mips*|IP*)
4012         arch="mips"
4013     ;;
4014     parisc*|hppa*)
4015         arch="parisc"
4016     ;;
4017     "Power Macintosh"|ppc*|powerpc*)
4018         arch="ppc"
4019     ;;
4020     s390|s390x)
4021         arch="s390"
4022     ;;
4023     sh4|sh)
4024         arch="sh4"
4025     ;;
4026     sun4u|sparc*)
4027         arch="sparc"
4028     ;;
4029     tilegx|tile-gx)
4030         arch="tilegx"
4031     ;;
4032     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4033         arch="x86"
4034     ;;
4035 esac
4036
4037 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4038 enable $arch
4039
4040 # Add processor-specific flags
4041 if enabled aarch64; then
4042
4043     case $cpu in
4044         armv*)
4045             cpuflags="-march=$cpu"
4046         ;;
4047         *)
4048             cpuflags="-mcpu=$cpu"
4049         ;;
4050     esac
4051
4052 elif enabled alpha; then
4053
4054     cpuflags="-mcpu=$cpu"
4055
4056 elif enabled arm; then
4057
4058     check_arm_arch() {
4059         check_cpp_condition stddef.h \
4060             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4061             $cpuflags
4062     }
4063
4064     probe_arm_arch() {
4065         if   check_arm_arch 4;        then echo armv4;
4066         elif check_arm_arch 4T;       then echo armv4t;
4067         elif check_arm_arch 5;        then echo armv5;
4068         elif check_arm_arch 5E;       then echo armv5e;
4069         elif check_arm_arch 5T;       then echo armv5t;
4070         elif check_arm_arch 5TE;      then echo armv5te;
4071         elif check_arm_arch 5TEJ;     then echo armv5te;
4072         elif check_arm_arch 6;        then echo armv6;
4073         elif check_arm_arch 6J;       then echo armv6j;
4074         elif check_arm_arch 6K;       then echo armv6k;
4075         elif check_arm_arch 6Z;       then echo armv6z;
4076         elif check_arm_arch 6ZK;      then echo armv6zk;
4077         elif check_arm_arch 6T2;      then echo armv6t2;
4078         elif check_arm_arch 7;        then echo armv7;
4079         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4080         elif check_arm_arch 7S;       then echo armv7-a;
4081         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4082         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4083         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4084         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4085         fi
4086     }
4087
4088     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4089
4090     case $cpu in
4091         armv*)
4092             cpuflags="-march=$cpu"
4093             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4094         ;;
4095         *)
4096             cpuflags="-mcpu=$cpu"
4097             case $cpu in
4098                 cortex-a*)                               subarch=armv7a  ;;
4099                 cortex-r*)                               subarch=armv7r  ;;
4100                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4101                 arm11*)                                  subarch=armv6   ;;
4102                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4103                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4104                 *)                             subarch=$(probe_arm_arch) ;;
4105             esac
4106         ;;
4107     esac
4108
4109     case "$subarch" in
4110         armv5t*)    enable fast_clz                ;;
4111         armv[6-8]*)
4112             enable fast_clz
4113             disabled fast_unaligned || enable fast_unaligned
4114             ;;
4115     esac
4116
4117 elif enabled avr32; then
4118
4119     case $cpu in
4120         ap7[02]0[0-2])
4121             subarch="avr32_ap"
4122             cpuflags="-mpart=$cpu"
4123         ;;
4124         ap)
4125             subarch="avr32_ap"
4126             cpuflags="-march=$cpu"
4127         ;;
4128         uc3[ab]*)
4129             subarch="avr32_uc"
4130             cpuflags="-mcpu=$cpu"
4131         ;;
4132         uc)
4133             subarch="avr32_uc"
4134             cpuflags="-march=$cpu"
4135         ;;
4136     esac
4137
4138 elif enabled bfin; then
4139
4140     cpuflags="-mcpu=$cpu"
4141
4142 elif enabled mips; then
4143
4144     cpuflags="-march=$cpu"
4145
4146     case $cpu in
4147         24kc)
4148             disable mips32r6
4149             disable mips64r2
4150             disable mips64r6
4151             disable mipsfpu
4152             disable mipsdsp
4153             disable mipsdspr2
4154             disable msa
4155         ;;
4156         24kf*)
4157             disable mips32r6
4158             disable mips64r2
4159             disable mips64r6
4160             disable mipsdsp
4161             disable mipsdspr2
4162             disable msa
4163         ;;
4164         24kec|34kc|1004kc)
4165             disable mips32r6
4166             disable mips64r2
4167             disable mips64r6
4168             disable mipsfpu
4169             disable mipsdspr2
4170             disable msa
4171         ;;
4172         24kef*|34kf*|1004kf*)
4173             disable mips32r6
4174             disable mips64r2
4175             disable mips64r6
4176             disable mipsdspr2
4177             disable msa
4178         ;;
4179         74kc)
4180             disable mips32r6
4181             disable mips64r2
4182             disable mips64r6
4183             disable mipsfpu
4184             disable msa
4185         ;;
4186         74kf)
4187             disable mips32r6
4188             disable mips64r2
4189             disable mips64r6
4190             disable msa
4191         ;;
4192         p5600)
4193             disable mips32r6
4194             disable mips64r2
4195             disable mips64r6
4196             disable mipsdsp
4197             disable mipsdspr2
4198             check_cflags "-mtune=p5600" &&
4199             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4200             add_asflags "-mfp64"
4201         ;;
4202         i6400)
4203             disable mips32r2
4204             disable mips32r6
4205             disable mips64r2
4206             disable mipsdsp
4207             disable mipsdspr2
4208             check_cflags "-mtune=i6400 -mabi=64" &&
4209             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4210             check_ldflags "-mabi=64" &&
4211             add_asflags "-mfp64"
4212         ;;
4213         loongson*)
4214             disable mips32r2
4215             disable mips32r6
4216             disable mips64r2
4217             disable mips64r6
4218             disable mipsfpu
4219             disable mipsdsp
4220             disable mipsdspr2
4221             disable msa
4222             enable local_aligned_8 local_aligned_16 local_aligned_32
4223             enable simd_align_16
4224             enable fast_64bit
4225             enable fast_clz
4226             enable fast_cmov
4227             enable fast_unaligned
4228             disable aligned_stack
4229             case $cpu in
4230                 loongson3*)
4231                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4232                 ;;
4233                 loongson2e)
4234                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4235                 ;;
4236                 loongson2f)
4237                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4238                 ;;
4239             esac
4240         ;;
4241         generic)
4242             disable mips64r6
4243             disable msa
4244         ;;
4245         *)
4246             # Unknown CPU. Disable everything.
4247             warn "unknown CPU. Disabling all MIPS optimizations."
4248             disable mipsfpu
4249             disable mips32r2
4250             disable mips32r6
4251             disable mips64r2
4252             disable mips64r6
4253             disable mipsdsp
4254             disable mipsdspr2
4255             disable msa
4256         ;;
4257     esac
4258
4259 elif enabled ppc; then
4260
4261     disable ldbrx
4262
4263     case $(tolower $cpu) in
4264         601|ppc601|powerpc601)
4265             cpuflags="-mcpu=601"
4266             disable altivec
4267         ;;
4268         603*|ppc603*|powerpc603*)
4269             cpuflags="-mcpu=603"
4270             disable altivec
4271         ;;
4272         604*|ppc604*|powerpc604*)
4273             cpuflags="-mcpu=604"
4274             disable altivec
4275         ;;
4276         g3|75*|ppc75*|powerpc75*)
4277             cpuflags="-mcpu=750"
4278             disable altivec
4279         ;;
4280         g4|745*|ppc745*|powerpc745*)
4281             cpuflags="-mcpu=7450"
4282             disable vsx
4283         ;;
4284         74*|ppc74*|powerpc74*)
4285             cpuflags="-mcpu=7400"
4286             disable vsx
4287         ;;
4288         g5|970|ppc970|powerpc970)
4289             cpuflags="-mcpu=970"
4290             disable vsx
4291         ;;
4292         power[3-6]*)
4293             cpuflags="-mcpu=$cpu"
4294             disable vsx
4295         ;;
4296         power[7-8]*)
4297             cpuflags="-mcpu=$cpu"
4298         ;;
4299         cell)
4300             cpuflags="-mcpu=cell"
4301             enable ldbrx
4302             disable vsx
4303         ;;
4304         e500mc)
4305             cpuflags="-mcpu=e500mc"
4306             disable altivec
4307         ;;
4308         e500v2)
4309             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4310             disable altivec
4311             disable dcbzl
4312         ;;
4313         e500)
4314             cpuflags="-mcpu=8540 -mhard-float"
4315             disable altivec
4316             disable dcbzl
4317         ;;
4318     esac
4319
4320 elif enabled sparc; then
4321
4322     case $cpu in
4323         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4324             cpuflags="-mcpu=$cpu"
4325         ;;
4326         ultrasparc*|niagara[234])
4327             cpuflags="-mcpu=$cpu"
4328         ;;
4329     esac
4330
4331 elif enabled x86; then
4332
4333     case $cpu in
4334         i[345]86|pentium)
4335             cpuflags="-march=$cpu"
4336             disable i686
4337             disable mmx
4338         ;;
4339         # targets that do NOT support nopl and conditional mov (cmov)
4340         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4341             cpuflags="-march=$cpu"
4342             disable i686
4343         ;;
4344         # targets that do support nopl and conditional mov (cmov)
4345         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4346         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4347             cpuflags="-march=$cpu"
4348             enable i686
4349             enable fast_cmov
4350         ;;
4351         # targets that do support conditional mov but on which it's slow
4352         pentium4|pentium4m|prescott|nocona)
4353             cpuflags="-march=$cpu"
4354             enable i686
4355             disable fast_cmov
4356         ;;
4357     esac
4358
4359 fi
4360
4361 if [ "$cpu" != generic ]; then
4362     add_cflags  $cpuflags
4363     add_asflags $cpuflags
4364     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4365 fi
4366
4367 # compiler sanity check
4368 check_exec <<EOF
4369 int main(void){ return 0; }
4370 EOF
4371 if test "$?" != 0; then
4372     echo "$cc is unable to create an executable file."
4373     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4374         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4375         echo "Only do this if you know what cross compiling means."
4376     fi
4377     die "C compiler test failed."
4378 fi
4379
4380 add_cppflags -D_ISOC99_SOURCE
4381 add_cxxflags -D__STDC_CONSTANT_MACROS
4382 check_cflags -std=c99
4383 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4384 #include <stdlib.h>
4385 EOF
4386 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4387 #include <stdlib.h>
4388 EOF
4389
4390 add_host_cppflags -D_ISOC99_SOURCE
4391 check_host_cflags -std=c99
4392 check_host_cflags -Wall
4393 check_host_cflags -O3
4394
4395 check_64bit(){
4396     arch32=$1
4397     arch64=$2
4398     expr=$3
4399     check_code cc "" "int test[2*($expr) - 1]" &&
4400         subarch=$arch64 || subarch=$arch32
4401 }
4402
4403 case "$arch" in
4404     aarch64|alpha|ia64)
4405         spic=$shared
4406     ;;
4407     mips)
4408         check_64bit mips mips64 '_MIPS_SIM > 1'
4409         spic=$shared
4410     ;;
4411     parisc)
4412         check_64bit parisc parisc64 'sizeof(void *) > 4'
4413         spic=$shared
4414     ;;
4415     ppc)
4416         check_64bit ppc ppc64 'sizeof(void *) > 4'
4417         spic=$shared
4418     ;;
4419     s390)
4420         check_64bit s390 s390x 'sizeof(void *) > 4'
4421         spic=$shared
4422     ;;
4423     sparc)
4424         check_64bit sparc sparc64 'sizeof(void *) > 4'
4425         spic=$shared
4426     ;;
4427     x86)
4428         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4429         # Treat x32 as x64 for now. Note it also needs spic=$shared
4430         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4431             subarch=x86_64
4432         if test "$subarch" = "x86_64"; then
4433             spic=$shared
4434         fi
4435     ;;
4436     ppc)
4437         check_cc <<EOF && subarch="ppc64"
4438         int test[(int)sizeof(char*) - 7];
4439 EOF
4440     ;;
4441 esac
4442
4443 enable $subarch
4444 enabled spic && enable_weak pic
4445
4446 # OS specific
4447 case $target_os in
4448     aix)
4449         SHFLAGS=-shared
4450         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4451         enabled shared && add_ldflags -Wl,-brtl
4452         ;;
4453     android)
4454         disable symver
4455         enable section_data_rel_ro
4456         SLIB_INSTALL_NAME='$(SLIBNAME)'
4457         SLIB_INSTALL_LINKS=
4458         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4459         ;;
4460     haiku)
4461         prefix_default="/boot/common"
4462         network_extralibs="-lnetwork"
4463         host_libs=
4464         ;;
4465     sunos)
4466         SHFLAGS='-shared -Wl,-h,$$(@F)'
4467         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4468         network_extralibs="-lsocket -lnsl"
4469         add_cppflags -D__EXTENSIONS__
4470         # When using suncc to build, the Solaris linker will mark
4471         # an executable with each instruction set encountered by
4472         # the Solaris assembler.  As our libraries contain their own
4473         # guards for processor-specific code, instead suppress
4474         # generation of the HWCAPS ELF section on Solaris x86 only.
4475         enabled_all suncc x86 &&
4476             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4477             add_ldflags -Wl,-M,mapfile
4478         nm_default='nm -P -g'
4479         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4480         ;;
4481     netbsd)
4482         disable symver
4483         oss_indev_extralibs="-lossaudio"
4484         oss_outdev_extralibs="-lossaudio"
4485         enabled gcc || check_ldflags -Wl,-zmuldefs
4486         ;;
4487     openbsd|bitrig)
4488         disable symver
4489         SHFLAGS='-shared'
4490         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4491         SLIB_INSTALL_LINKS=
4492         oss_indev_extralibs="-lossaudio"
4493         oss_outdev_extralibs="-lossaudio"
4494         ;;
4495     dragonfly)
4496         disable symver
4497         ;;
4498     freebsd)
4499         ;;
4500     bsd/os)
4501         add_extralibs -lpoll -lgnugetopt
4502         strip="strip -d"
4503         ;;
4504     darwin)
4505         enabled ppc && add_asflags -force_cpusubtype_ALL
4506         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4507         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4508         strip="${strip} -x"
4509         add_ldflags -Wl,-dynamic,-search_paths_first
4510         SLIBSUF=".dylib"
4511         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4512         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4513         objformat="macho"
4514         enabled x86_64 && objformat="macho64"
4515         enabled_any pic shared x86_64 ||
4516             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4517         ;;
4518     msys*)
4519         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4520         ;;
4521     mingw32*|mingw64*)
4522         if test $target_os = "mingw32ce"; then
4523             disable network
4524         else
4525             target_os=mingw32
4526         fi
4527         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4528         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4529         LIBTARGET=i386
4530         if enabled x86_64; then
4531             LIBTARGET="i386:x86-64"
4532         elif enabled arm; then
4533             LIBTARGET=arm-wince
4534         fi
4535         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4536         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4537         shlibdir_default="$bindir_default"
4538         SLIBPREF=""
4539         SLIBSUF=".dll"
4540         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4541         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4542         dlltool="${cross_prefix}dlltool"
4543         if check_cmd lib.exe -list; then
4544             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4545             if enabled x86_64; then
4546                 LIBTARGET=x64
4547             fi
4548         elif check_cmd $dlltool --version; then
4549             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4550         fi
4551         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4552         SLIB_INSTALL_LINKS=
4553         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4554         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4555         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4556         objformat="win32"
4557         ranlib=:
4558         enable dos_paths
4559         check_ldflags -Wl,--nxcompat,--dynamicbase
4560         # Lets work around some stupidity in binutils.
4561         # ld will strip relocations from executables even though we need them
4562         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4563         # however ld then forgets what the entry point should be (oops) so we
4564         # have to manually (re)set it.
4565         if enabled x86_32; then
4566             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4567         elif enabled x86_64; then
4568             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4569             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4570             # Set image base >4GB for extra entropy with HEASLR
4571             add_ldexeflags -Wl,--image-base,0x140000000
4572             append SHFLAGS -Wl,--image-base,0x180000000
4573         fi
4574         ;;
4575     win32|win64)
4576         disable symver
4577         if enabled shared; then
4578             # Link to the import library instead of the normal static library
4579             # for shared libs.
4580             LD_LIB='%.lib'
4581             # Cannot build both shared and static libs with MSVC or icl.
4582             disable static
4583         fi
4584         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4585         shlibdir_default="$bindir_default"
4586         SLIBPREF=""
4587         SLIBSUF=".dll"
4588         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4589         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4590         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4591         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4592         SLIB_INSTALL_LINKS=
4593         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4594         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4595         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4596         objformat="win32"
4597         ranlib=:
4598         enable dos_paths
4599         ;;
4600     cygwin*)
4601         target_os=cygwin
4602         shlibdir_default="$bindir_default"
4603         SLIBPREF="cyg"
4604         SLIBSUF=".dll"
4605         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4606         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4607         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4608         SLIB_INSTALL_LINKS=
4609         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4610         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4611         objformat="win32"
4612         enable dos_paths
4613         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4614         ;;
4615     *-dos|freedos|opendos)
4616         network_extralibs="-lsocket"
4617         objformat="coff"
4618         enable dos_paths
4619         add_cppflags -U__STRICT_ANSI__
4620         ;;
4621     linux)
4622         enable dv1394
4623         enable section_data_rel_ro
4624         ;;
4625     irix*)
4626         target_os=irix
4627         ranlib="echo ignoring ranlib"
4628         ;;
4629     os/2*)
4630         strip="lxlite -CS"
4631         ln_s="cp -f"
4632         objformat="aout"
4633         add_cppflags -D_GNU_SOURCE
4634         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4635         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4636         LIBSUF="_s.a"
4637         SLIBPREF=""
4638         SLIBSUF=".dll"
4639         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4640         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4641         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4642             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4643             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4644             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4645             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4646         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4647             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4648         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4649         enable dos_paths
4650         enable_weak os2threads
4651         ;;
4652     gnu/kfreebsd)
4653         add_cppflags -D_BSD_SOURCE
4654         ;;
4655     gnu)
4656         ;;
4657     qnx)
4658         add_cppflags -D_QNX_SOURCE
4659         network_extralibs="-lsocket"
4660         ;;
4661     symbian)
4662         SLIBSUF=".dll"
4663         enable dos_paths
4664         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4665         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4666         add_ldflags -Wl,--target1-abs,--no-undefined \
4667                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4668                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4669         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4670                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4671                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4672         ;;
4673     osf1)
4674         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4675         ;;
4676     minix)
4677         ;;
4678     plan9)
4679         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4680                      -D_REENTRANT_SOURCE        \
4681                      -D_RESEARCH_SOURCE         \
4682                      -DFD_SETSIZE=96            \
4683                      -DHAVE_SOCK_OPTS
4684         add_compat strtod.o strtod=avpriv_strtod
4685         network_extralibs='-lbsd'
4686         exeobjs=compat/plan9/main.o
4687         disable ffserver
4688         cp_f='cp'
4689         ;;
4690     none)
4691         ;;
4692     *)
4693         die "Unknown OS '$target_os'."
4694         ;;
4695 esac
4696
4697 # determine libc flavour
4698
4699 probe_libc(){
4700     pfx=$1
4701     pfx_no_=${pfx%_}
4702     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4703     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4704         eval ${pfx}libc_type=uclibc
4705         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4706     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4707         eval ${pfx}libc_type=glibc
4708         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4709     # MinGW headers can be installed on Cygwin, so check for newlib first.
4710     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4711         eval ${pfx}libc_type=newlib
4712         add_${pfx}cppflags -U__STRICT_ANSI__
4713     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4714     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4715         eval ${pfx}libc_type=mingw64
4716         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4717             add_compat msvcrt/snprintf.o
4718             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4719         fi
4720         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4721         eval test \$${pfx_no_}cc_type = "gcc" &&
4722             add_${pfx}cppflags -D__printf__=__gnu_printf__
4723     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4724          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4725         eval ${pfx}libc_type=mingw32
4726         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4727             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4728             die "ERROR: MinGW32 runtime version must be >= 3.15."
4729         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4730         eval test \$${pfx_no_}cc_type = "gcc" &&
4731             add_${pfx}cppflags -D__printf__=__gnu_printf__
4732     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4733         eval ${pfx}libc_type=msvcrt
4734         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4735             if [ "$pfx" = host_ ]; then
4736                 add_host_cppflags -Dsnprintf=_snprintf
4737             else
4738                 add_compat strtod.o strtod=avpriv_strtod
4739                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4740                                              _snprintf=avpriv_snprintf  \
4741                                              vsnprintf=avpriv_vsnprintf
4742             fi
4743         fi
4744         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4745         # 0x601 by default unless something else is set by the user.
4746         # This can easily lead to us detecting functions only present
4747         # in such new versions and producing binaries requiring windows 7.0.
4748         # Therefore explicitly set the default to XP unless the user has
4749         # set something else on the command line.
4750         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4751         # family. For these cases, configure is free to use any functions
4752         # found in the SDK headers by default. (Alternatively, we could force
4753         # _WIN32_WINNT to 0x0602 in that case.)
4754         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4755             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4756 #ifdef WINAPI_FAMILY
4757 #include <winapifamily.h>
4758 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4759 #error not desktop
4760 #endif
4761 #endif
4762 EOF
4763     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4764         eval ${pfx}libc_type=klibc
4765     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4766         eval ${pfx}libc_type=bionic
4767     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4768         eval ${pfx}libc_type=solaris
4769         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4770     fi
4771     check_${pfx}cc <<EOF
4772 #include <time.h>
4773 void *v = localtime_r;
4774 EOF
4775 test "$?" != 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
4776 #include <time.h>
4777 void *v = localtime_r;
4778 EOF
4779
4780 }
4781
4782 probe_libc
4783 test -n "$libc_type" && enable libc_$libc_type
4784 probe_libc host_
4785 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4786
4787 case $libc_type in
4788     bionic)
4789         add_compat strtod.o strtod=avpriv_strtod
4790         ;;
4791 esac
4792
4793 # hacks for compiler/libc/os combinations
4794
4795 if enabled_all tms470 libc_glibc; then
4796     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4797     add_cppflags -D__USER_LABEL_PREFIX__=
4798     add_cppflags -D__builtin_memset=memset
4799     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4800     add_cflags   -pds=48    # incompatible redefinition of macro
4801 fi
4802
4803 if enabled_all ccc libc_glibc; then
4804     add_ldflags -Wl,-z,now  # calls to libots crash without this
4805 fi
4806
4807 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4808     add_cppflags '-I\$(SRC_PATH)/compat/float'
4809
4810 esc(){
4811     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4812 }
4813
4814 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4815
4816 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4817
4818 set_default libdir
4819 : ${shlibdir_default:="$libdir"}
4820 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4821
4822 set_default $PATHS_LIST
4823 set_default nm
4824
4825 # we need to build at least one lib type
4826 if ! enabled_any static shared; then
4827     cat <<EOF
4828 At least one library type must be built.
4829 Specify --enable-static to build the static libraries or --enable-shared to
4830 build the shared libraries as well. To only build the shared libraries specify
4831 --disable-static in addition to --enable-shared.
4832 EOF
4833     exit 1;
4834 fi
4835
4836 die_license_disabled() {
4837     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4838 }
4839
4840 die_license_disabled_gpl() {
4841     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4842 }
4843
4844 die_license_disabled gpl frei0r
4845 die_license_disabled gpl libcdio
4846 die_license_disabled gpl librubberband
4847 die_license_disabled gpl libsmbclient
4848 die_license_disabled gpl libutvideo
4849 die_license_disabled gpl libvidstab
4850 die_license_disabled gpl libx264
4851 die_license_disabled gpl libx265
4852 die_license_disabled gpl libxavs
4853 die_license_disabled gpl libxvid
4854 die_license_disabled gpl libzvbi
4855 die_license_disabled gpl x11grab
4856
4857 die_license_disabled nonfree libaacplus
4858 die_license_disabled nonfree libfaac
4859 die_license_disabled nonfree nvenc
4860 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4861 enabled gpl && die_license_disabled_gpl nonfree openssl
4862
4863 die_license_disabled version3 gmp
4864 die_license_disabled version3 libopencore_amrnb
4865 die_license_disabled version3 libopencore_amrwb
4866 die_license_disabled version3 libsmbclient
4867 die_license_disabled version3 libvo_aacenc
4868 die_license_disabled version3 libvo_amrwbenc
4869
4870 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4871
4872 disabled optimizations || check_cflags -fomit-frame-pointer
4873
4874 enable_weak_pic() {
4875     disabled pic && return
4876     enable pic
4877     add_cppflags -DPIC
4878     case "$target_os" in
4879     mingw*|cygwin*)
4880         ;;
4881     *)
4882         add_cflags -fPIC
4883         ;;
4884     esac
4885     add_asflags  -fPIC
4886 }
4887
4888 enabled pic && enable_weak_pic
4889
4890 check_cc <<EOF || die "Symbol mangling check failed."
4891 int ff_extern;
4892 EOF
4893 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4894 extern_prefix=${sym%%ff_extern*}
4895
4896 check_cc <<EOF && enable_weak inline_asm
4897 void foo(void) { __asm__ volatile ("" ::); }
4898 EOF
4899
4900 _restrict=
4901 for restrict_keyword in restrict __restrict__ __restrict; do
4902     check_cc <<EOF && _restrict=$restrict_keyword && break
4903 void foo(char * $restrict_keyword p);
4904 EOF
4905 done
4906
4907 check_cc <<EOF && enable pragma_deprecated
4908 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4909 EOF
4910
4911 check_cc <<EOF && enable attribute_packed
4912 struct { int x; } __attribute__((packed)) x;
4913 EOF
4914
4915 check_cc <<EOF && enable attribute_may_alias
4916 union { int x; } __attribute__((may_alias)) x;
4917 EOF
4918
4919 check_cc <<EOF || die "endian test failed"
4920 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4921 EOF
4922 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4923
4924 if ! enabled ppc64 || enabled bigendian; then
4925     disable vsx
4926 fi
4927
4928 check_gas() {
4929     log "check_gas using '$as' as AS"
4930     # :vararg is used on aarch64, arm and ppc altivec
4931     check_as <<EOF || return 1
4932 .macro m n, y:vararg=0
4933 \n: .int \y
4934 .endm
4935 m x
4936 EOF
4937     # .altmacro is only used in arm asm
4938     ! enabled arm || check_as <<EOF || return 1
4939 .altmacro
4940 EOF
4941     enable gnu_as
4942     return 0
4943 }
4944
4945 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4946     nogas=:
4947     enabled_any arm aarch64 && nogas=die
4948     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4949     as_noop=-v
4950
4951     case $as_type in
4952         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4953         gcc)  gaspp_as_type=gas ;;
4954         *)    gaspp_as_type=$as_type ;;
4955     esac
4956
4957     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4958
4959     test "${as#*gas-preprocessor.pl}" != "$as" ||
4960     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4961         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4962
4963     if ! check_gas ; then
4964         as=${gas:=$as}
4965         check_gas || \
4966             $nogas "GNU assembler not found, install/update gas-preprocessor"
4967     fi
4968
4969     check_as <<EOF && enable as_func
4970 .func test
4971 .endfunc
4972 EOF
4973 fi
4974
4975 check_inline_asm inline_asm_labels '"1:\n"'
4976
4977 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4978
4979 if enabled aarch64; then
4980     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4981     # internal assembler in clang 3.3 does not support this instruction
4982     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4983     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4984
4985     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4986
4987 elif enabled alpha; then
4988
4989     check_cflags -mieee
4990
4991 elif enabled arm; then
4992
4993     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4994
4995     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4996 float func(float a, float b){ return a+b; }
4997 EOF
4998
4999     enabled thumb && check_cflags -mthumb || check_cflags -marm
5000
5001     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5002         enable vfp_args
5003     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5004         enable vfp_args
5005     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5006         case "${cross_prefix:-$cc}" in
5007             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5008             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5009 __asm__ (".eabi_attribute 28, 1");
5010 int main(void) { return 0; }
5011 EOF
5012         esac
5013         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5014     fi
5015
5016     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5017     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5018     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5019     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5020     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5021     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5022     enabled setend  && check_insn setend  'setend be'
5023
5024     [ $target_os = linux ] || [ $target_os = android ] ||
5025         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5026             $ARCH_EXT_LIST_ARM
5027
5028     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5029
5030     check_as <<EOF && enable as_dn_directive
5031 ra .dn d0.i16
5032 .unreq ra
5033 EOF
5034
5035     # llvm's integrated assembler supports .object_arch from llvm 3.5
5036     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5037 .object_arch armv4
5038 EOF
5039
5040     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5041
5042 elif enabled mips; then
5043
5044     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5045     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5046     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5047
5048     # Enable minimum ISA based on selected options
5049     if enabled mips64 && (enabled mipsdsp || enabled mipsdspr2); then
5050         add_cflags "-mips64r2"
5051         add_asflags "-mips64r2"
5052     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
5053         add_cflags "-mips64"
5054         add_asflags "-mips64"
5055     elif enabled mipsdsp || enabled mipsdspr2; then
5056         add_cflags "-mips32r2 -mfp32"
5057         add_asflags "-mips32r2 -mfp32"
5058     fi
5059
5060     enabled mipsdsp && add_cflags "-mdsp" && add_asflags "-mdsp" &&
5061      check_inline_asm mipsdsp '"addu.qb $t0, $t1, $t2"'
5062     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
5063      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
5064     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
5065      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
5066     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
5067      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
5068
5069     enabled msa && add_asflags "-mmsa"
5070
5071 elif enabled parisc; then
5072
5073     if enabled gcc; then
5074         case $($cc -dumpversion) in
5075             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5076         esac
5077     fi
5078
5079 elif enabled ppc; then
5080
5081     enable local_aligned_8 local_aligned_16 local_aligned_32
5082
5083     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5084     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5085     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5086     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5087
5088     # AltiVec flags: The FSF version of GCC differs from the Apple version
5089     if enabled altivec; then
5090         check_cflags -maltivec -mabi=altivec &&
5091         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5092         check_cflags -faltivec
5093
5094         # check if our compiler supports Motorola AltiVec C API
5095         check_cc <<EOF || disable altivec
5096 $inc_altivec_h
5097 int main(void) {
5098     vector signed int v1 = (vector signed int) { 0 };
5099     vector signed int v2 = (vector signed int) { 1 };
5100     v1 = vec_add(v1, v2);
5101     return 0;
5102 }
5103 EOF
5104
5105         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5106     fi
5107
5108     if enabled vsx; then
5109         check_cflags -mvsx &&
5110         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5111     fi
5112
5113     if enabled power8; then
5114         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5115     fi
5116
5117 elif enabled x86; then
5118
5119     check_builtin rdtsc    intrin.h   "__rdtsc()"
5120     check_builtin mm_empty mmintrin.h "_mm_empty()"
5121
5122     enable local_aligned_8 local_aligned_16 local_aligned_32
5123
5124     # check whether EBP is available on x86
5125     # As 'i' is stored on the stack, this program will crash
5126     # if the base pointer is used to access it because the
5127     # base pointer is cleared in the inline assembly code.
5128     check_exec_crash <<EOF && enable ebp_available
5129 volatile int i=0;
5130 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5131 return i;
5132 EOF
5133
5134     # check whether EBX is available on x86
5135     check_inline_asm ebx_available '""::"b"(0)' &&
5136         check_inline_asm ebx_available '"":::"%ebx"'
5137
5138     # check whether xmm clobbers are supported
5139     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5140
5141     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5142         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5143
5144     # check whether binutils is new enough to compile SSSE3/MMXEXT
5145     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5146     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5147
5148     if ! disabled_any asm mmx yasm; then
5149         if check_cmd $yasmexe --version; then
5150             enabled x86_64 && yasm_extra="-m amd64"
5151             yasm_debug="-g dwarf2"
5152         elif check_cmd nasm -v; then
5153             yasmexe=nasm
5154             yasm_debug="-g -F dwarf"
5155             if enabled x86_64; then
5156                 case "$objformat" in
5157                     elf)   objformat=elf64 ;;
5158                     win32) objformat=win64 ;;
5159                 esac
5160             fi
5161         fi
5162
5163         YASMFLAGS="-f $objformat $yasm_extra"
5164         enabled pic               && append YASMFLAGS "-DPIC"
5165         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5166         case "$objformat" in
5167             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5168         esac
5169
5170         check_yasm "movbe ecx, [5]" && enable yasm ||
5171             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5172         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5173         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5174         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5175         check_yasm "CPU amdnop" || disable cpunop
5176     fi
5177
5178     case "$cpu" in
5179         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5180             disable fast_clz
5181         ;;
5182     esac
5183
5184 fi
5185
5186 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5187
5188 check_ldflags -Wl,--as-needed
5189 check_ldflags -Wl,-z,noexecstack
5190
5191 if check_func dlopen; then
5192     ldl=
5193 elif check_func dlopen -ldl; then
5194     ldl=-ldl
5195 fi
5196
5197 frei0r_filter_extralibs='$ldl'
5198 frei0r_src_filter_extralibs='$ldl'
5199 ladspa_filter_extralibs='$ldl'
5200 nvenc_encoder_extralibs='$ldl'
5201
5202 if ! disabled network; then
5203     check_func getaddrinfo $network_extralibs
5204     check_func inet_aton $network_extralibs
5205
5206     check_type netdb.h "struct addrinfo"
5207     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5208     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5209     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5210     check_type poll.h "struct pollfd"
5211     check_type netinet/sctp.h "struct sctp_event_subscribe"
5212     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5213     check_type netinet/in.h "struct sockaddr_in6"
5214     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5215     check_type "sys/types.h sys/socket.h" socklen_t
5216
5217     # Prefer arpa/inet.h over winsock2
5218     if check_header arpa/inet.h ; then
5219         check_func closesocket
5220     elif check_header winsock2.h ; then
5221         check_func_headers winsock2.h closesocket -lws2 &&
5222             network_extralibs="-lws2" ||
5223         { check_func_headers winsock2.h closesocket -lws2_32 &&
5224             network_extralibs="-lws2_32"; } || disable winsock2_h network
5225         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5226
5227         check_type ws2tcpip.h socklen_t
5228         check_type ws2tcpip.h "struct addrinfo"
5229         check_type ws2tcpip.h "struct group_source_req"
5230         check_type ws2tcpip.h "struct ip_mreq_source"
5231         check_type ws2tcpip.h "struct ipv6_mreq"
5232         check_type winsock2.h "struct pollfd"
5233         check_struct winsock2.h "struct sockaddr" sa_len
5234         check_type ws2tcpip.h "struct sockaddr_in6"
5235         check_type ws2tcpip.h "struct sockaddr_storage"
5236     else
5237         disable network
5238     fi
5239 fi
5240
5241 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5242 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5243 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5244 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5245 check_builtin sarestart signal.h "SA_RESTART"
5246 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5247 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5248 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5249
5250 case "$custom_allocator" in
5251     jemalloc)
5252         # jemalloc by default does not use a prefix
5253         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5254     ;;
5255     tcmalloc)
5256         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5257         malloc_prefix=tc_
5258     ;;
5259 esac
5260
5261 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5262 check_func  ${malloc_prefix}memalign            && enable memalign
5263 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5264
5265 check_func  access
5266 check_func  arc4random
5267 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5268 check_func  fcntl
5269 check_func  fork
5270 check_func  gethrtime
5271 check_func  getopt
5272 check_func  getrusage
5273 check_func  gettimeofday
5274 check_func  isatty
5275 check_func  mach_absolute_time
5276 check_func  mkstemp
5277 check_func  mmap
5278 check_func  mprotect
5279 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5280 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5281 check_func  sched_getaffinity
5282 check_func  setrlimit
5283 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5284 check_func  strerror_r
5285 check_func  sysconf
5286 check_func  sysctl
5287 check_func  usleep
5288
5289 check_func_headers conio.h kbhit
5290 check_func_headers io.h setmode
5291 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5292 check_func_headers stdlib.h getenv
5293 check_func_headers sys/stat.h lstat
5294
5295 check_func_headers windows.h CoTaskMemFree -lole32
5296 check_func_headers windows.h GetProcessAffinityMask
5297 check_func_headers windows.h GetProcessTimes
5298 check_func_headers windows.h GetSystemTimeAsFileTime
5299 check_func_headers windows.h MapViewOfFile
5300 check_func_headers windows.h PeekNamedPipe
5301 check_func_headers windows.h SetConsoleTextAttribute
5302 check_func_headers windows.h SetConsoleCtrlHandler
5303 check_func_headers windows.h Sleep
5304 check_func_headers windows.h VirtualAlloc
5305 check_struct windows.h "CONDITION_VARIABLE" Ptr
5306 check_func_headers glob.h glob
5307 enabled xlib &&
5308     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5309
5310 check_header direct.h
5311 check_header dirent.h
5312 check_header dlfcn.h
5313 check_header d3d11.h
5314 check_header dxva.h
5315 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5316 check_header io.h
5317 check_header libcrystalhd/libcrystalhd_if.h
5318 check_header mach/mach_time.h
5319 check_header malloc.h
5320 check_header net/udplite.h
5321 check_header poll.h
5322 check_header sys/mman.h
5323 check_header sys/param.h
5324 check_header sys/resource.h
5325 check_header sys/select.h
5326 check_header sys/time.h
5327 check_header sys/un.h
5328 check_header termios.h
5329 check_header unistd.h
5330 check_header valgrind/valgrind.h
5331 check_header vdpau/vdpau.h
5332 check_header vdpau/vdpau_x11.h
5333 check_header VideoDecodeAcceleration/VDADecoder.h
5334 check_header VideoToolbox/VideoToolbox.h
5335 check_header windows.h
5336 check_header X11/extensions/XvMClib.h
5337 check_header asm/types.h
5338
5339 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5340 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5341 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5342 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5343
5344 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5345
5346 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5347 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5348 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5349 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5350 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5351
5352 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5353 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5354
5355 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5356
5357 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5358
5359 if ! disabled w32threads && ! enabled pthreads; then
5360     check_func_headers "windows.h process.h" _beginthreadex &&
5361         enable w32threads || disable w32threads
5362     if ! enabled w32threads && enabled winrt; then
5363         check_func_headers "windows.h" CreateThread &&
5364             enable w32threads || disable w32threads
5365     fi
5366 fi
5367
5368 # check for some common methods of building with pthread support
5369 # do this before the optional library checks as some of them require pthreads
5370 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5371     enable pthreads
5372     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5373         add_cflags -pthread
5374         add_extralibs -pthread
5375     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5376         add_cflags -pthreads
5377         add_extralibs -pthreads
5378     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5379         add_cflags -ldl -pthread
5380         add_extralibs -ldl -pthread
5381     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5382         add_extralibs -lpthreadGC2
5383     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5384         :
5385     elif ! check_func pthread_join && ! check_func pthread_create; then
5386         disable pthreads
5387     fi
5388     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5389 fi
5390
5391
5392 if enabled pthreads; then
5393   check_func pthread_cancel
5394 fi
5395
5396 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5397 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5398 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5399
5400 check_lib math.h sin -lm && LIBM="-lm"
5401 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5402
5403 atan2f_args=2
5404 copysign_args=2
5405 hypot_args=2
5406 ldexpf_args=2
5407 powf_args=2
5408
5409 for func in $MATH_FUNCS; do
5410     eval check_mathfunc $func \${${func}_args:-1}
5411 done
5412
5413 for func in $COMPLEX_FUNCS; do
5414     eval check_complexfunc $func \${${func}_args:-1}
5415 done
5416
5417 # these are off by default, so fail if requested and not available
5418 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5419 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5420                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5421 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5422                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5423                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5424 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5425 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5426 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5427 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5428 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5429 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5430 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5431 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5432 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5433 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5434 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5435 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5436                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5437                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5438 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5439 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5440 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5441 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5442                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5443                                  warn "using libfdk without pkg-config"; } }
5444 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"
5445 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5446 enabled fontconfig        && enable libfontconfig
5447 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5448 enabled libfreetype       && require_libfreetype
5449 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5450 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5451 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5452                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5453                                done || die "ERROR: libgsm not found"; }
5454 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5455 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.7.1" kvazaar.h kvz_api_get
5456 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5457 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5458 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5459 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5460 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5461 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5462 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5463 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5464 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5465                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5466                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5467                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5468                                die "ERROR: libopenjpeg not found"; }
5469 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5470 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5471 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5472 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5473 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5474 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5475 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5476 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5477                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5478 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5479 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5480 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5481 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5482 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5483 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5484 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5485                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5486                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5487 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5488 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5489 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5490 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5491 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5492 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5493
5494 enabled libvpx            && {
5495     enabled libvpx_vp8_decoder && {
5496         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5497             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5498                 die "ERROR: libvpx decoder version must be >=0.9.1";
5499     }
5500     enabled libvpx_vp8_encoder && {
5501         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5502             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5503                 die "ERROR: libvpx encoder version must be >=0.9.7";
5504     }
5505     enabled libvpx_vp9_decoder && {
5506         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5507             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5508                 disable libvpx_vp9_decoder;
5509     }
5510     enabled libvpx_vp9_encoder && {
5511         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5512             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5513                 disable libvpx_vp9_encoder;
5514     }
5515     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5516         die "libvpx enabled but no supported decoders found"
5517     fi
5518 }
5519
5520 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5521 enabled libwebp           && {
5522     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5523     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5524 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5525                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5526                                  warn "using libx264 without pkg-config"; } } &&
5527                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5528                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5529                              { check_cpp_condition x264.h "X264_MPEG2" &&
5530                                enable libx262; }
5531 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5532                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5533                                die "ERROR: libx265 version must be >= 57."; }
5534 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5535 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5536 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5537 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5538 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5539 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5540                                 { ! enabled cross_compile && {
5541                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5542                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5543                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5544                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5545                                die "ERROR: mmal not found"; }
5546 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5547 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5548                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5549                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5550                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5551 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5552                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5553                                die "ERROR: openal not found"; } &&
5554                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5555                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5556 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5557                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5558                                die "ERROR: opencl not found"; } &&
5559                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5560                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5561                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5562 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5563                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5564                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5565                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5566                                die "ERROR: opengl not found."
5567                              }
5568 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5569                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5570                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5571                                die "ERROR: openssl not found"; }
5572 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5573
5574 # libdc1394 check
5575 if enabled libdc1394; then
5576     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5577         enable libdc1394_2; } ||
5578     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5579         enable libdc1394_1; } ||
5580     die "ERROR: No version of libdc1394 found "
5581 fi
5582
5583 if enabled gcrypt; then
5584     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5585     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5586         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5587         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5588         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5589             die "ERROR: gcrypt not found"
5590         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5591     else
5592         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5593     fi
5594 fi
5595
5596 if ! disabled sdl; then
5597     SDL_CONFIG="${cross_prefix}sdl-config"
5598     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5599         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5600         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5601         enable sdl
5602     else
5603         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5604             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5605             sdl_libs=$("${SDL_CONFIG}" --libs)
5606             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5607             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5608             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5609             enable sdl
5610         elif enabled sdl ; then
5611             die "ERROR: SDL not found"
5612         else
5613             disable sdl
5614         fi
5615     fi
5616     if test $target_os = "mingw32"; then
5617         sdl_libs="$sdl_libs -mconsole"
5618     fi
5619 fi
5620 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5621
5622 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5623     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5624     enable securetransport; }
5625
5626 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5627                        enable schannel && add_extralibs -lSecur32; }
5628
5629 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5630 enabled makeinfo \
5631     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5632     && enable makeinfo_html || disable makeinfo_html
5633 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5634 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5635 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5636 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5637
5638 check_header linux/fb.h
5639 check_header linux/videodev.h
5640 check_header linux/videodev2.h
5641 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5642
5643 check_header sys/videoio.h
5644 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5645
5646 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5647 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5648 # w32api 3.12 had it defined wrong
5649 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5650
5651 check_type "dshow.h" IBaseFilter
5652
5653 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5654 { check_header dev/bktr/ioctl_meteor.h &&
5655   check_header dev/bktr/ioctl_bt848.h; } ||
5656 { check_header machine/ioctl_meteor.h &&
5657   check_header machine/ioctl_bt848.h; } ||
5658 { check_header dev/video/meteor/ioctl_meteor.h &&
5659   check_header dev/video/bktr/ioctl_bt848.h; } ||
5660 check_header dev/ic/bt8xx.h
5661
5662 check_header sndio.h
5663 if check_struct sys/soundcard.h audio_buf_info bytes; then
5664     enable_safe sys/soundcard.h
5665 else
5666     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5667     #include <sys/soundcard.h>
5668     audio_buf_info abc;
5669 EOF
5670 fi
5671 check_header soundcard.h
5672
5673 enabled_any alsa_indev alsa_outdev &&
5674     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5675
5676 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5677     check_func jack_port_get_latency_range -ljack
5678
5679 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5680
5681 if enabled libcdio; then
5682     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5683     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5684     die "ERROR: No usable libcdio/cdparanoia found"
5685 fi
5686
5687 enabled xlib &&
5688     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5689
5690 if ! disabled libxcb; then
5691     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5692         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5693     } && disable x11grab && enable libxcb
5694
5695 if enabled libxcb; then
5696     disabled libxcb_shm || {
5697         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5698             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5699         } && check_header sys/shm.h && enable libxcb_shm; }
5700
5701     disabled libxcb_xfixes || {
5702         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5703             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5704         } && enable libxcb_xfixes; }
5705
5706     disabled libxcb_shape || {
5707         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5708             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5709         } && enable libxcb_shape; }
5710
5711     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5712     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5713 fi
5714 fi
5715
5716 if enabled x11grab; then
5717     enabled xlib || die "ERROR: Xlib not found"
5718     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5719     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5720 fi
5721
5722 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5723
5724 enabled dxva2api_h &&
5725     check_cc <<EOF && enable dxva2api_cobj
5726 #define _WIN32_WINNT 0x0600
5727 #define COBJMACROS
5728 #include <windows.h>
5729 #include <d3d9.h>
5730 #include <dxva2api.h>
5731 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5732 EOF
5733
5734 enabled vaapi &&
5735     check_lib va/va.h vaInitialize -lva ||
5736     disable vaapi
5737
5738 enabled vaapi && enabled xlib &&
5739     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5740     enable vaapi_x11
5741
5742 enabled vdpau &&
5743     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5744     disable vdpau
5745
5746 enabled vdpau && enabled xlib &&
5747     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5748     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5749     enable vdpau_x11
5750
5751 # Funny iconv installations are not unusual, so check it after all flags have been set
5752 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5753
5754 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5755
5756 # add some useful compiler flags if supported
5757 check_cflags -Wdeclaration-after-statement
5758 check_cflags -Wall
5759 check_cflags -Wdisabled-optimization
5760 check_cflags -Wpointer-arith
5761 check_cflags -Wredundant-decls
5762 check_cflags -Wwrite-strings
5763 check_cflags -Wtype-limits
5764 check_cflags -Wundef
5765 check_cflags -Wmissing-prototypes
5766 check_cflags -Wno-pointer-to-int-cast
5767 check_cflags -Wstrict-prototypes
5768 check_cflags -Wempty-body
5769 enabled extra_warnings && check_cflags -Winline
5770 enabled extra_warnings && check_cflags -Wcast-qual
5771
5772 check_disable_warning(){
5773     warning_flag=-W${1#-Wno-}
5774     test_cflags $warning_flag && add_cflags $1
5775 }
5776
5777 check_disable_warning -Wno-parentheses
5778 check_disable_warning -Wno-switch
5779 check_disable_warning -Wno-format-zero-length
5780 check_disable_warning -Wno-pointer-sign
5781
5782 # add some linker flags
5783 check_ldflags -Wl,--warn-common
5784 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5785 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5786 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5787 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5788
5789 # add some strip flags
5790 # -wN '..@*' is more selective than -x, but not available everywhere.
5791 check_stripflags -wN \'..@*\' || check_stripflags -x
5792
5793 enabled neon_clobber_test &&
5794     check_ldflags -Wl,--wrap,avcodec_open2              \
5795                   -Wl,--wrap,avcodec_decode_audio4      \
5796                   -Wl,--wrap,avcodec_decode_video2      \
5797                   -Wl,--wrap,avcodec_decode_subtitle2   \
5798                   -Wl,--wrap,avcodec_encode_audio2      \
5799                   -Wl,--wrap,avcodec_encode_video2      \
5800                   -Wl,--wrap,avcodec_encode_subtitle    \
5801                   -Wl,--wrap,swr_convert                \
5802                   -Wl,--wrap,avresample_convert ||
5803     disable neon_clobber_test
5804
5805 enabled xmm_clobber_test &&
5806     check_ldflags -Wl,--wrap,avcodec_open2              \
5807                   -Wl,--wrap,avcodec_decode_audio4      \
5808                   -Wl,--wrap,avcodec_decode_video2      \
5809                   -Wl,--wrap,avcodec_decode_subtitle2   \
5810                   -Wl,--wrap,avcodec_encode_audio2      \
5811                   -Wl,--wrap,avcodec_encode_video2      \
5812                   -Wl,--wrap,avcodec_encode_subtitle    \
5813                   -Wl,--wrap,swr_convert                \
5814                   -Wl,--wrap,avresample_convert         \
5815                   -Wl,--wrap,sws_scale ||
5816     disable xmm_clobber_test
5817
5818 echo "X { local: *; };" > $TMPV
5819 if test_ldflags -Wl,--version-script,$TMPV; then
5820     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5821 elif test_ldflags -Wl,-M,$TMPV; then
5822     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5823 fi
5824
5825 check_cc <<EOF && enable symver_asm_label
5826 void ff_foo(void) __asm__ ("av_foo@VERSION");
5827 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5828 EOF
5829     check_cc <<EOF && enable symver_gnu_asm
5830 __asm__(".symver ff_foo,av_foo@VERSION");
5831 void ff_foo(void) {}
5832 EOF
5833
5834 if [ -z "$optflags" ]; then
5835     if enabled small; then
5836         optflags=$cflags_size
5837     elif enabled optimizations; then
5838         optflags=$cflags_speed
5839     else
5840         optflags=$cflags_noopt
5841     fi
5842 fi
5843
5844 check_optflags(){
5845     check_cflags "$@"
5846     enabled lto && check_ldflags "$@"
5847 }
5848
5849
5850 if enabled lto; then
5851     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5852     check_cflags  -flto
5853     check_ldflags -flto $cpuflags
5854     disable inline_asm_direct_symbol_refs
5855 fi
5856
5857 check_optflags $optflags
5858 check_optflags -fno-math-errno
5859 check_optflags -fno-signed-zeros
5860
5861 enabled ftrapv && check_cflags -ftrapv
5862
5863 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5864 int x;
5865 EOF
5866
5867
5868 if enabled icc; then
5869     # Just warnings, no remarks
5870     check_cflags -w1
5871     # -wd: Disable following warnings
5872     # 144, 167, 556: -Wno-pointer-sign
5873     # 188: enumerated type mixed with another type
5874     # 1292: attribute "foo" ignored
5875     # 1419: external declaration in primary source file
5876     # 10006: ignoring unknown option -fno-signed-zeros
5877     # 10148: ignoring unknown option -Wno-parentheses
5878     # 10156: ignoring option '-W'; no argument required
5879     # 13200: No EMMS instruction before call to function
5880     # 13203: No EMMS instruction before return from function
5881     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5882     # 11030: Warning unknown option --as-needed
5883     # 10156: ignoring option '-export'; no argument required
5884     check_ldflags -wd10156,11030
5885     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5886     enable ebp_available
5887     # The test above does not test linking
5888     enabled lto && disable symver_asm_label
5889     if enabled x86_32; then
5890         icc_version=$($cc -dumpversion)
5891         test ${icc_version%%.*} -ge 11 &&
5892             check_cflags -falign-stack=maintain-16-byte ||
5893             disable aligned_stack
5894     fi
5895 elif enabled ccc; then
5896     # disable some annoying warnings
5897     add_cflags -msg_disable bitnotint
5898     add_cflags -msg_disable mixfuncvoid
5899     add_cflags -msg_disable nonstandcast
5900     add_cflags -msg_disable unsupieee
5901 elif enabled gcc; then
5902     check_optflags -fno-tree-vectorize
5903     check_cflags -Werror=format-security
5904     check_cflags -Werror=implicit-function-declaration
5905     check_cflags -Werror=missing-prototypes
5906     check_cflags -Werror=return-type
5907     check_cflags -Werror=vla
5908     check_cflags -Wformat
5909     check_cflags -fdiagnostics-color=auto
5910     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5911 elif enabled llvm_gcc; then
5912     check_cflags -mllvm -stack-alignment=16
5913 elif enabled clang; then
5914     check_cflags -mllvm -stack-alignment=16
5915     check_cflags -Qunused-arguments
5916     check_cflags -Werror=implicit-function-declaration
5917     check_cflags -Werror=missing-prototypes
5918     check_cflags -Werror=return-type
5919 elif enabled cparser; then
5920     add_cflags -Wno-missing-variable-declarations
5921     add_cflags -Wno-empty-statement
5922 elif enabled armcc; then
5923     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5924     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5925     # 2523: use of inline assembly is deprecated
5926     add_cflags -W${armcc_opt},--diag_suppress=2523
5927     add_cflags -W${armcc_opt},--diag_suppress=1207
5928     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5929     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5930     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5931     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5932 elif enabled tms470; then
5933     add_cflags -pds=824 -pds=837
5934     disable inline_asm
5935 elif enabled pathscale; then
5936     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5937 elif enabled_any msvc icl; then
5938     enabled x86_32 && disable aligned_stack
5939     enabled_all x86_32 debug && add_cflags -Oy-
5940     enabled debug && add_ldflags -debug
5941     enable pragma_deprecated
5942     if enabled icl; then
5943         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5944         # (correctly) on icl 13.x.
5945         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5946             add_cflags -Qansi-alias
5947         # Some inline asm is not compilable in debug
5948         if enabled debug; then
5949             disable ebp_available
5950             disable ebx_available
5951         fi
5952     fi
5953     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5954     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5955     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5956     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5957     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5958     # MSVC 2013 and newer can handle it fine.
5959     # If this declspec fails, force including stdlib.h before the restrict redefinition
5960     # happens in config.h.
5961     if [ $_restrict != restrict ]; then
5962         check_cc <<EOF || add_cflags -FIstdlib.h
5963 __declspec($_restrict) void* foo(int);
5964 EOF
5965     fi
5966     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5967 fi
5968
5969 for pfx in "" host_; do
5970     varname=${pfx%_}cc_type
5971     eval "type=\$$varname"
5972     if [ $type = "msvc" ]; then
5973         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5974 static inline int foo(int a) { return a; }
5975 EOF
5976     fi
5977 done
5978
5979 case $as_type in
5980     clang)
5981         add_asflags -Qunused-arguments
5982     ;;
5983 esac
5984
5985 case $ld_type in
5986     clang)
5987         check_ldflags -Qunused-arguments
5988     ;;
5989 esac
5990
5991 case $target_os in
5992     osf1)
5993         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5994     ;;
5995     plan9)
5996         add_cppflags -Dmain=plan9_main
5997     ;;
5998 esac
5999
6000 enable frame_thread_encoder
6001
6002 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6003
6004 check_deps $CONFIG_LIST       \
6005            $CONFIG_EXTRA      \
6006            $HAVE_LIST         \
6007            $ALL_COMPONENTS    \
6008
6009 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"
6010
6011
6012 if test $target_os = "haiku"; then
6013     disable memalign
6014     disable posix_memalign
6015 fi
6016
6017 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6018     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6019     enable dxva2_lib
6020
6021 ! enabled_any memalign posix_memalign aligned_malloc &&
6022     enabled simd_align_16 && enable memalign_hack
6023
6024 # add_dep lib dep
6025 # -> enable ${lib}_deps_${dep}
6026 # -> add $dep to ${lib}_deps only once
6027 add_dep() {
6028     lib=$1
6029     dep=$2
6030     enabled "${lib}_deps_${dep}" && return 0
6031     enable  "${lib}_deps_${dep}"
6032     prepend "${lib}_deps" $dep
6033 }
6034
6035 # merge deps lib components
6036 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6037 merge_deps() {
6038     lib=$1
6039     shift
6040     for comp in $*; do
6041         enabled $comp || continue
6042         eval "dep=\"\$${comp}_deps\""
6043         for d in $dep; do
6044             add_dep $lib $d
6045         done
6046     done
6047 }
6048
6049 merge_deps libavfilter $FILTER_LIST
6050
6051 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6052
6053 for thread in $THREADS_LIST; do
6054     if enabled $thread; then
6055         test -n "$thread_type" &&
6056             die "ERROR: Only one thread type must be selected." ||
6057             thread_type="$thread"
6058     fi
6059 done
6060
6061 enabled zlib && add_cppflags -DZLIB_CONST
6062
6063 # conditional library dependencies, in linking order
6064 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6065 enabled aresample_filter    && prepend avfilter_deps "swresample"
6066 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6067 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6068 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6069 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6070 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6071 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6072 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6073 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6074 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6075 enabled pan_filter          && prepend avfilter_deps "swresample"
6076 enabled pp_filter           && prepend avfilter_deps "postproc"
6077 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6078 enabled resample_filter && prepend avfilter_deps "avresample"
6079 enabled sab_filter          && prepend avfilter_deps "swscale"
6080 enabled scale_filter    && prepend avfilter_deps "swscale"
6081 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6082 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6083 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6084 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6085 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6086 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6087 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6088 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6089
6090 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6091
6092 enabled opus_decoder    && prepend avcodec_deps "swresample"
6093
6094 expand_deps(){
6095     lib_deps=${1}_deps
6096     eval "deps=\$$lib_deps"
6097     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6098     unique $lib_deps
6099 }
6100
6101 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6102 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6103
6104 map 'expand_deps $v' $LIBRARY_LIST
6105
6106 echo "install prefix            $prefix"
6107 echo "source path               $source_path"
6108 echo "C compiler                $cc"
6109 echo "C library                 $libc_type"
6110 if test "$host_cc" != "$cc"; then
6111     echo "host C compiler           $host_cc"
6112     echo "host C library            $host_libc_type"
6113 fi
6114 echo "ARCH                      $arch ($cpu)"
6115 if test "$build_suffix" != ""; then
6116     echo "build suffix              $build_suffix"
6117 fi
6118 if test "$progs_suffix" != ""; then
6119     echo "progs suffix              $progs_suffix"
6120 fi
6121 if test "$extra_version" != ""; then
6122     echo "version string suffix     $extra_version"
6123 fi
6124 echo "big-endian                ${bigendian-no}"
6125 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6126 if enabled x86; then
6127     echo "${yasmexe}                      ${yasm-no}"
6128     echo "MMX enabled               ${mmx-no}"
6129     echo "MMXEXT enabled            ${mmxext-no}"
6130     echo "3DNow! enabled            ${amd3dnow-no}"
6131     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6132     echo "SSE enabled               ${sse-no}"
6133     echo "SSSE3 enabled             ${ssse3-no}"
6134     echo "AESNI enabled             ${aesni-no}"
6135     echo "AVX enabled               ${avx-no}"
6136     echo "XOP enabled               ${xop-no}"
6137     echo "FMA3 enabled              ${fma3-no}"
6138     echo "FMA4 enabled              ${fma4-no}"
6139     echo "i686 features enabled     ${i686-no}"
6140     echo "CMOV is fast              ${fast_cmov-no}"
6141     echo "EBX available             ${ebx_available-no}"
6142     echo "EBP available             ${ebp_available-no}"
6143 fi
6144 if enabled aarch64; then
6145     echo "NEON enabled              ${neon-no}"
6146     echo "VFP enabled               ${vfp-no}"
6147 fi
6148 if enabled arm; then
6149     echo "ARMv5TE enabled           ${armv5te-no}"
6150     echo "ARMv6 enabled             ${armv6-no}"
6151     echo "ARMv6T2 enabled           ${armv6t2-no}"
6152     echo "VFP enabled               ${vfp-no}"
6153     echo "NEON enabled              ${neon-no}"
6154     echo "THUMB enabled             ${thumb-no}"
6155 fi
6156 if enabled mips; then
6157     echo "MIPS FPU enabled          ${mipsfpu-no}"
6158     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6159     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6160     echo "MIPS MSA enabled          ${msa-no}"
6161     echo "LOONGSON MMI enabled      ${mmi-no}"
6162 fi
6163 if enabled ppc; then
6164     echo "AltiVec enabled           ${altivec-no}"
6165     echo "VSX enabled               ${vsx-no}"
6166     echo "POWER8 enabled            ${power8-no}"
6167     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6168     echo "dcbzl available           ${dcbzl-no}"
6169 fi
6170 echo "debug symbols             ${debug-no}"
6171 echo "strip symbols             ${stripping-no}"
6172 echo "optimize for size         ${small-no}"
6173 echo "optimizations             ${optimizations-no}"
6174 echo "static                    ${static-no}"
6175 echo "shared                    ${shared-no}"
6176 echo "postprocessing support    ${postproc-no}"
6177 echo "new filter support        ${avfilter-no}"
6178 echo "network support           ${network-no}"
6179 echo "threading support         ${thread_type-no}"
6180 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6181 echo "SDL support               ${sdl-no}"
6182 echo "opencl enabled            ${opencl-no}"
6183 echo "texi2html enabled         ${texi2html-no}"
6184 echo "perl enabled              ${perl-no}"
6185 echo "pod2man enabled           ${pod2man-no}"
6186 echo "makeinfo enabled          ${makeinfo-no}"
6187 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6188 test -n "$random_seed" &&
6189     echo "random seed               ${random_seed}"
6190 echo
6191
6192 echo "Enabled programs:"
6193 print_enabled '' $PROGRAM_LIST | print_in_columns
6194 echo
6195
6196 echo "External libraries:"
6197 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6198 echo
6199
6200 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6201     echo "Enabled ${type}s:"
6202     eval list=\$$(toupper $type)_LIST
6203     print_enabled '_*' $list | print_in_columns
6204     echo
6205 done
6206
6207 license="LGPL version 2.1 or later"
6208 if enabled nonfree; then
6209     license="nonfree and unredistributable"
6210 elif enabled gplv3; then
6211     license="GPL version 3 or later"
6212 elif enabled lgplv3; then
6213     license="LGPL version 3 or later"
6214 elif enabled gpl; then
6215     license="GPL version 2 or later"
6216 fi
6217
6218 echo "License: $license"
6219
6220 echo "Creating config.mak, config.h, and doc/config.texi..."
6221
6222 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6223
6224 enabled stripping || strip="echo skipping strip"
6225
6226 config_files="$TMPH config.mak doc/config.texi"
6227
6228 cat > config.mak <<EOF
6229 # Automatically generated by configure - do not modify!
6230 ifndef FFMPEG_CONFIG_MAK
6231 FFMPEG_CONFIG_MAK=1
6232 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6233 prefix=$prefix
6234 LIBDIR=\$(DESTDIR)$libdir
6235 SHLIBDIR=\$(DESTDIR)$shlibdir
6236 INCDIR=\$(DESTDIR)$incdir
6237 BINDIR=\$(DESTDIR)$bindir
6238 DATADIR=\$(DESTDIR)$datadir
6239 DOCDIR=\$(DESTDIR)$docdir
6240 MANDIR=\$(DESTDIR)$mandir
6241 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6242 SRC_PATH=$source_path
6243 ifndef MAIN_MAKEFILE
6244 SRC_PATH:=\$(SRC_PATH:.%=..%)
6245 endif
6246 CC_IDENT=$cc_ident
6247 ARCH=$arch
6248 INTRINSICS=$intrinsics
6249 CC=$cc
6250 CXX=$cxx
6251 AS=$as
6252 OBJCC=$objcc
6253 LD=$ld
6254 DEPCC=$dep_cc
6255 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6256 DEPAS=$as
6257 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6258 YASM=$yasmexe
6259 DEPYASM=$yasmexe
6260 AR=$ar
6261 ARFLAGS=$arflags
6262 AR_O=$ar_o
6263 RANLIB=$ranlib
6264 STRIP=$strip
6265 CP=cp -p
6266 LN_S=$ln_s
6267 CPPFLAGS=$CPPFLAGS
6268 CFLAGS=$CFLAGS
6269 CXXFLAGS=$CXXFLAGS
6270 OBJCFLAGS=$OBJCFLAGS
6271 ASFLAGS=$ASFLAGS
6272 AS_C=$AS_C
6273 AS_O=$AS_O
6274 OBJCC_C=$OBJCC_C
6275 OBJCC_E=$OBJCC_E
6276 OBJCC_O=$OBJCC_O
6277 CC_C=$CC_C
6278 CC_E=$CC_E
6279 CC_O=$CC_O
6280 CXX_C=$CXX_C
6281 CXX_O=$CXX_O
6282 LD_O=$LD_O
6283 LD_LIB=$LD_LIB
6284 LD_PATH=$LD_PATH
6285 DLLTOOL=$dlltool
6286 WINDRES=$windres
6287 DEPWINDRES=$dep_cc
6288 DOXYGEN=$doxygen
6289 LDFLAGS=$LDFLAGS
6290 LDEXEFLAGS=$LDEXEFLAGS
6291 LDLIBFLAGS=$LDLIBFLAGS
6292 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6293 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6294 YASMFLAGS=$YASMFLAGS
6295 BUILDSUF=$build_suffix
6296 PROGSSUF=$progs_suffix
6297 FULLNAME=$FULLNAME
6298 LIBPREF=$LIBPREF
6299 LIBSUF=$LIBSUF
6300 LIBNAME=$LIBNAME
6301 SLIBPREF=$SLIBPREF
6302 SLIBSUF=$SLIBSUF
6303 EXESUF=$EXESUF
6304 EXTRA_VERSION=$extra_version
6305 CCDEP=$CCDEP
6306 CXXDEP=$CXXDEP
6307 CCDEP_FLAGS=$CCDEP_FLAGS
6308 ASDEP=$ASDEP
6309 ASDEP_FLAGS=$ASDEP_FLAGS
6310 CC_DEPFLAGS=$CC_DEPFLAGS
6311 AS_DEPFLAGS=$AS_DEPFLAGS
6312 HOSTCC=$host_cc
6313 HOSTLD=$host_ld
6314 HOSTCFLAGS=$host_cflags
6315 HOSTCPPFLAGS=$host_cppflags
6316 HOSTEXESUF=$HOSTEXESUF
6317 HOSTLDFLAGS=$host_ldflags
6318 HOSTLIBS=$host_libs
6319 DEPHOSTCC=$host_cc
6320 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6321 HOSTCCDEP=$HOSTCCDEP
6322 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6323 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6324 HOSTCC_C=$HOSTCC_C
6325 HOSTCC_O=$HOSTCC_O
6326 HOSTLD_O=$HOSTLD_O
6327 TARGET_EXEC=$target_exec $target_exec_args
6328 TARGET_PATH=$target_path
6329 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6330 CFLAGS-ffplay=$sdl_cflags
6331 ZLIB=$($ldflags_filter -lz)
6332 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6333 EXTRALIBS=$extralibs
6334 COMPAT_OBJS=$compat_objs
6335 EXEOBJS=$exeobjs
6336 INSTALL=$install
6337 LIBTARGET=${LIBTARGET}
6338 SLIBNAME=${SLIBNAME}
6339 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6340 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6341 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6342 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6343 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6344 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6345 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6346 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6347 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6348 NOREDZONE_FLAGS=$noredzone_flags
6349 EOF
6350
6351 get_version(){
6352     lcname=lib${1}
6353     name=$(toupper $lcname)
6354     file=$source_path/$lcname/version.h
6355     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6356     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6357     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6358     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6359     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6360     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6361 }
6362
6363 map 'get_version $v' $LIBRARY_LIST
6364
6365 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6366
6367 print_program_libs(){
6368     eval "program_libs=\$${1}_libs"
6369     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6370 }
6371
6372 map 'print_program_libs $v' $PROGRAM_LIST
6373
6374 cat > $TMPH <<EOF
6375 /* Automatically generated by configure - do not modify! */
6376 #ifndef FFMPEG_CONFIG_H
6377 #define FFMPEG_CONFIG_H
6378 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6379 #define FFMPEG_LICENSE "$(c_escape $license)"
6380 #define CONFIG_THIS_YEAR 2016
6381 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6382 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6383 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6384 #define av_restrict $_restrict
6385 #define EXTERN_PREFIX "${extern_prefix}"
6386 #define EXTERN_ASM ${extern_prefix}
6387 #define BUILDSUF "$build_suffix"
6388 #define SLIBSUF "$SLIBSUF"
6389 #define HAVE_MMX2 HAVE_MMXEXT
6390 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6391 EOF
6392
6393 test -n "$assert_level" &&
6394     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6395
6396 test -n "$malloc_prefix" &&
6397     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6398
6399 if enabled yasm; then
6400     append config_files $TMPASM
6401     printf '' >$TMPASM
6402 fi
6403
6404 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6405
6406
6407 mkdir -p doc
6408 mkdir -p tests
6409 mkdir -p tests/api
6410 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6411
6412 print_config ARCH_   "$config_files" $ARCH_LIST
6413 print_config HAVE_   "$config_files" $HAVE_LIST
6414 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6415                                      $CONFIG_EXTRA      \
6416                                      $ALL_COMPONENTS    \
6417
6418 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6419 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6420
6421 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6422 cp_if_changed $TMPH config.h
6423 touch .config
6424
6425 enabled yasm && cp_if_changed $TMPASM config.asm
6426
6427 cat > $TMPH <<EOF
6428 /* Generated by ffconf */
6429 #ifndef AVUTIL_AVCONFIG_H
6430 #define AVUTIL_AVCONFIG_H
6431 EOF
6432
6433 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6434
6435 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6436
6437 cp_if_changed $TMPH libavutil/avconfig.h
6438
6439 if test -n "$WARNINGS"; then
6440     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6441     enabled fatal_warnings && exit 1
6442 fi
6443
6444 # build pkg-config files
6445
6446 lib_version(){
6447     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6448 }
6449
6450 pkgconfig_generate(){
6451     name=$1
6452     shortname=${name#lib}${build_suffix}
6453     comment=$2
6454     version=$3
6455     libs=$4
6456     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6457     requires=${requires%, }
6458     enabled ${name#lib} || return 0
6459     mkdir -p $name
6460     cat <<EOF > $name/$name${build_suffix}.pc
6461 prefix=$prefix
6462 exec_prefix=\${prefix}
6463 libdir=$libdir
6464 includedir=$incdir
6465
6466 Name: $name
6467 Description: $comment
6468 Version: $version
6469 Requires: $(enabled shared || echo $requires)
6470 Requires.private: $(enabled shared && echo $requires)
6471 Conflicts:
6472 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6473 Libs.private: $(enabled shared && echo $libs)
6474 Cflags: -I\${includedir}
6475 EOF
6476
6477 mkdir -p doc/examples/pc-uninstalled
6478 includedir=${source_path}
6479 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6480     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6481 prefix=
6482 exec_prefix=
6483 libdir=\${pcfiledir}/../../../$name
6484 includedir=${includedir}
6485
6486 Name: $name
6487 Description: $comment
6488 Version: $version
6489 Requires: $requires
6490 Conflicts:
6491 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6492 Cflags: -I\${includedir}
6493 EOF
6494 }
6495
6496 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6497 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6498 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6499 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6500 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6501 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6502 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6503 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6504 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"