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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 112   --enable-raise-major     increase major version numbers in sonames [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --enable-avisynth        enable reading of AviSynth script files [no]
 205   --disable-bzlib          disable bzlib [autodetect]
 206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 207   --enable-frei0r          enable frei0r video filtering [no]
 208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 209                            if openssl, librtmp or gmp is not used [no]
 210   --enable-gmp             enable gmp, needed for rtmp(t)e support
 211                            if openssl or librtmp is not used [no]
 212   --enable-gnutls          enable gnutls, needed for https support
 213                            if openssl is not used [no]
 214   --disable-iconv          disable iconv [autodetect]
 215   --enable-jni             enable JNI support [no]
 216   --enable-ladspa          enable LADSPA audio filtering [no]
 217   --enable-libass          enable libass subtitles rendering,
 218                            needed for subtitles and ass filter [no]
 219   --enable-libbluray       enable BluRay reading using libbluray [no]
 220   --enable-libbs2b         enable bs2b DSP library [no]
 221   --enable-libcaca         enable textual display using libcaca [no]
 222   --enable-libcelt         enable CELT decoding via libcelt [no]
 223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 225                            and libraw1394 [no]
 226   --enable-libebur128      enable libebur128 for EBU R128 measurement,
 227                            needed for loudnorm filter [no]
 228   --enable-libfaac         enable AAC encoding via libfaac [no]
 229   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 230   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 231   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 232   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 233   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 234   --enable-libgme          enable Game Music Emu via libgme [no]
 235   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 236   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 237   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 238   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 239   --enable-libmodplug      enable ModPlug via libmodplug [no]
 240   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 241   --enable-libnut          enable NUT (de)muxing via libnut,
 242                            native (de)muxer exists [no]
 243   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 244   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 245   --enable-libopencv       enable video filtering via libopencv [no]
 246   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 247   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 248   --enable-libopus         enable Opus de/encoding via libopus [no]
 249   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 250   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 251   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 252   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 253   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 254   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 255   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 256   --enable-libsoxr         enable Include libsoxr resampling [no]
 257   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 258   --enable-libssh          enable SFTP protocol via libssh [no]
 259   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 260   --enable-libtheora       enable Theora encoding via libtheora [no]
 261   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 262   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 263   --enable-libvidstab      enable video stabilization using vid.stab [no]
 264   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 265   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 266                            native implementation exists [no]
 267   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 268   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 269   --enable-libwebp         enable WebP encoding via libwebp [no]
 270   --enable-libx264         enable H.264 encoding via x264 [no]
 271   --enable-libx265         enable HEVC encoding via x265 [no]
 272   --enable-libxavs         enable AVS encoding via xavs [no]
 273   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 274   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 275   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 276   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 277   --enable-libxvid         enable Xvid encoding via xvidcore,
 278                            native MPEG-4/Xvid encoder exists [no]
 279   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 280   --enable-libzmq          enable message passing via libzmq [no]
 281   --enable-libzvbi         enable teletext support via libzvbi [no]
 282   --disable-lzma           disable lzma [autodetect]
 283   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 284   --enable-mediacodec      enable Android MediaCodec support [no]
 285   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 286   --enable-openal          enable OpenAL 1.1 capture support [no]
 287   --enable-opencl          enable OpenCL code
 288   --enable-opengl          enable OpenGL rendering [no]
 289   --enable-openssl         enable openssl, needed for https support
 290                            if gnutls is not used [no]
 291   --disable-schannel       disable SChannel SSP, needed for TLS support on
 292                            Windows if openssl and gnutls are not used [autodetect]
 293   --disable-sdl            disable sdl [autodetect]
 294   --disable-securetransport disable Secure Transport, needed for TLS support
 295                            on OSX if openssl and gnutls are not used [autodetect]
 296   --enable-x11grab         enable X11 grabbing (legacy) [no]
 297   --disable-xlib           disable xlib [autodetect]
 298   --disable-zlib           disable zlib [autodetect]
 299
 300   The following libraries provide various hardware acceleration features:
 301   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 302   --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
 303   --enable-cuvid           enable Nvidia CUVID support [autodetect]
 304   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 305   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 306   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 307   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 308   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 309   --enable-nvenc           enable Nvidia video encoding code [no]
 310   --enable-omx             enable OpenMAX IL code [no]
 311   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 312   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 313   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 314   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 315   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 316
 317 Toolchain options:
 318   --arch=ARCH              select architecture [$arch]
 319   --cpu=CPU                select the minimum required CPU (affects
 320                            instruction selection, may crash on older CPUs)
 321   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 322   --progs-suffix=SUFFIX    program name suffix []
 323   --enable-cross-compile   assume a cross-compiler is used
 324   --sysroot=PATH           root of cross-build tree
 325   --sysinclude=PATH        location of cross-build system headers
 326   --target-os=OS           compiler targets OS [$target_os]
 327   --target-exec=CMD        command to run executables on target
 328   --target-path=DIR        path to view of build directory on target
 329   --target-samples=DIR     path to samples directory on target
 330   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 331   --toolchain=NAME         set tool defaults according to NAME
 332   --nm=NM                  use nm tool NM [$nm_default]
 333   --ar=AR                  use archive tool AR [$ar_default]
 334   --as=AS                  use assembler AS [$as_default]
 335   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 336   --strip=STRIP            use strip tool STRIP [$strip_default]
 337   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 338   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 339   --cc=CC                  use C compiler CC [$cc_default]
 340   --cxx=CXX                use C compiler CXX [$cxx_default]
 341   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 342   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 343   --ld=LD                  use linker LD [$ld_default]
 344   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 345   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 346   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 347   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 348   --host-cc=HOSTCC         use host C compiler HOSTCC
 349   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 350   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 351   --host-ld=HOSTLD         use host linker HOSTLD
 352   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 353   --host-libs=HLIBS        use libs HLIBS when linking for host
 354   --host-os=OS             compiler host OS [$target_os]
 355   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 356   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 357   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 358   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 359   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 360   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 361   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 362   --extra-version=STRING   version string suffix []
 363   --optflags=OPTFLAGS      override optimization-related compiler flags
 364   --build-suffix=SUFFIX    library name suffix []
 365   --enable-pic             build position-independent code
 366   --enable-thumb           compile for Thumb instruction set
 367   --enable-lto             use link-time optimization
 368   --env="ENV=override"     override the environment variables
 369
 370 Advanced options (experts only):
 371   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 372   --custom-allocator=NAME  use a supported custom allocator
 373   --disable-symver         disable symbol versioning
 374   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 375   --disable-safe-bitstream-reader
 376                            disable buffer boundary checking in bitreaders
 377                            (faster, but may crash)
 378   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 379   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 380
 381 Optimization options (experts only):
 382   --disable-asm            disable all assembly optimizations
 383   --disable-altivec        disable AltiVec optimizations
 384   --disable-vsx            disable VSX optimizations
 385   --disable-power8         disable POWER8 optimizations
 386   --disable-amd3dnow       disable 3DNow! optimizations
 387   --disable-amd3dnowext    disable 3DNow! extended optimizations
 388   --disable-mmx            disable MMX optimizations
 389   --disable-mmxext         disable MMXEXT optimizations
 390   --disable-sse            disable SSE optimizations
 391   --disable-sse2           disable SSE2 optimizations
 392   --disable-sse3           disable SSE3 optimizations
 393   --disable-ssse3          disable SSSE3 optimizations
 394   --disable-sse4           disable SSE4 optimizations
 395   --disable-sse42          disable SSE4.2 optimizations
 396   --disable-avx            disable AVX optimizations
 397   --disable-xop            disable XOP optimizations
 398   --disable-fma3           disable FMA3 optimizations
 399   --disable-fma4           disable FMA4 optimizations
 400   --disable-avx2           disable AVX2 optimizations
 401   --disable-aesni          disable AESNI optimizations
 402   --disable-armv5te        disable armv5te optimizations
 403   --disable-armv6          disable armv6 optimizations
 404   --disable-armv6t2        disable armv6t2 optimizations
 405   --disable-vfp            disable VFP optimizations
 406   --disable-neon           disable NEON optimizations
 407   --disable-inline-asm     disable use of inline assembly
 408   --disable-yasm           disable use of nasm/yasm assembly
 409   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 410   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 411   --disable-msa            disable MSA optimizations
 412   --disable-mipsfpu        disable floating point MIPS optimizations
 413   --disable-mmi            disable Loongson SIMD optimizations
 414   --disable-fast-unaligned consider unaligned accesses slow
 415
 416 Developer options (useful when working on FFmpeg itself):
 417   --disable-debug          disable debugging symbols
 418   --enable-debug=LEVEL     set the debug level [$debuglevel]
 419   --disable-optimizations  disable compiler optimizations
 420   --enable-extra-warnings  enable more compiler warnings
 421   --disable-stripping      disable stripping of executables and shared libraries
 422   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 423                            2 causes a slowdown at runtime.
 424   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 425   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 426                            leaks and errors, using the specified valgrind binary.
 427                            Cannot be combined with --target-exec
 428   --enable-ftrapv          Trap arithmetic overflows
 429   --samples=PATH           location of test samples for FATE, if not set use
 430                            \$FATE_SAMPLES at make invocation time.
 431   --enable-neon-clobber-test check NEON registers for clobbering (should be
 432                            used only for debugging purposes)
 433   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 434                            should be used only for debugging purposes)
 435   --enable-random          randomly enable/disable components
 436   --disable-random
 437   --enable-random=LIST     randomly enable/disable specific components or
 438   --disable-random=LIST    component groups. LIST is a comma-separated list
 439                            of NAME[:PROB] entries where NAME is a component
 440                            (group) and PROB the probability associated with
 441                            NAME (default 0.5).
 442   --random-seed=VALUE      seed value for --enable/disable-random
 443   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 444                            (only applies to --disable-optimizations builds)
 445
 446 NOTE: Object files are built at the place where configure is launched.
 447 EOF
 448   exit 0
 449 }
 450
 451 quotes='""'
 452 if test -t 1 && which tput >/dev/null 2>&1; then
 453     ncolors=$(tput colors)
 454     if test -n "$ncolors" && test $ncolors -ge 8; then
 455         bold_color=$(tput bold)
 456         warn_color=$(tput setaf 3)
 457         error_color=$(tput setaf 1)
 458         reset_color=$(tput sgr0)
 459     fi
 460     # 72 used instead of 80 since that's the default of pr
 461     ncols=$(tput cols)
 462 fi
 463 : ${ncols:=72}
 464
 465 log(){
 466     echo "$@" >> $logfile
 467 }
 468
 469 log_file(){
 470     log BEGIN $1
 471     pr -n -t $1 >> $logfile
 472     log END $1
 473 }
 474
 475 warn(){
 476     log "WARNING: $*"
 477     WARNINGS="${WARNINGS}WARNING: $*\n"
 478 }
 479
 480 die(){
 481     log "$@"
 482     echo "$error_color$bold_color$@$reset_color"
 483     cat <<EOF
 484
 485 If you think configure made a mistake, make sure you are using the latest
 486 version from Git.  If the latest version fails, report the problem to the
 487 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 488 EOF
 489     if disabled logging; then
 490         cat <<EOF
 491 Rerun configure with logging enabled (do not use --disable-logging), and
 492 include the log this produces with your report.
 493 EOF
 494     else
 495         cat <<EOF
 496 Include the log file "$logfile" produced by configure as this will help
 497 solve the problem.
 498 EOF
 499     fi
 500     exit 1
 501 }
 502
 503 # Avoid locale weirdness, besides we really just want to translate ASCII.
 504 toupper(){
 505     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 506 }
 507
 508 tolower(){
 509     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 510 }
 511
 512 c_escape(){
 513     echo "$*" | sed 's/["\\]/\\\0/g'
 514 }
 515
 516 sh_quote(){
 517     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 518     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 519     echo "$v"
 520 }
 521
 522 cleanws(){
 523     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 524 }
 525
 526 filter(){
 527     pat=$1
 528     shift
 529     for v; do
 530         eval "case $v in $pat) echo $v ;; esac"
 531     done
 532 }
 533
 534 filter_out(){
 535     pat=$1
 536     shift
 537     for v; do
 538         eval "case $v in $pat) ;; *) echo $v ;; esac"
 539     done
 540 }
 541
 542 map(){
 543     m=$1
 544     shift
 545     for v; do eval $m; done
 546 }
 547
 548 add_suffix(){
 549     suffix=$1
 550     shift
 551     for v; do echo ${v}${suffix}; done
 552 }
 553
 554 set_all(){
 555     value=$1
 556     shift
 557     for var in $*; do
 558         eval $var=$value
 559     done
 560 }
 561
 562 set_weak(){
 563     value=$1
 564     shift
 565     for var; do
 566         eval : \${$var:=$value}
 567     done
 568 }
 569
 570 sanitize_var_name(){
 571     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 572 }
 573
 574 set_safe(){
 575     var=$1
 576     shift
 577     eval $(sanitize_var_name "$var")='$*'
 578 }
 579
 580 get_safe(){
 581     eval echo \$$(sanitize_var_name "$1")
 582 }
 583
 584 pushvar(){
 585     for pvar in $*; do
 586         eval level=\${${pvar}_level:=0}
 587         eval ${pvar}_${level}="\$$pvar"
 588         eval ${pvar}_level=$(($level+1))
 589     done
 590 }
 591
 592 popvar(){
 593     for pvar in $*; do
 594         eval level=\${${pvar}_level:-0}
 595         test $level = 0 && continue
 596         eval level=$(($level-1))
 597         eval $pvar="\${${pvar}_${level}}"
 598         eval ${pvar}_level=$level
 599         eval unset ${pvar}_${level}
 600     done
 601 }
 602
 603 enable(){
 604     set_all yes $*
 605 }
 606
 607 disable(){
 608     set_all no $*
 609 }
 610
 611 enable_weak(){
 612     set_weak yes $*
 613 }
 614
 615 disable_weak(){
 616     set_weak no $*
 617 }
 618
 619 enable_safe(){
 620     for var; do
 621         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 622     done
 623 }
 624
 625 disable_safe(){
 626     for var; do
 627         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 628     done
 629 }
 630
 631 do_enable_deep(){
 632     for var; do
 633         enabled $var && continue
 634         eval sel="\$${var}_select"
 635         eval sgs="\$${var}_suggest"
 636         pushvar var sgs
 637         enable_deep $sel
 638         popvar sgs
 639         enable_deep_weak $sgs
 640         popvar var
 641     done
 642 }
 643
 644 enable_deep(){
 645     do_enable_deep $*
 646     enable $*
 647 }
 648
 649 enable_deep_weak(){
 650     for var; do
 651         disabled $var && continue
 652         pushvar var
 653         do_enable_deep $var
 654         popvar var
 655         enable_weak $var
 656     done
 657 }
 658
 659 enabled(){
 660     test "${1#!}" = "$1" && op='=' || op=!=
 661     eval test "x\$${1#!}" $op "xyes"
 662 }
 663
 664 disabled(){
 665     test "${1#!}" = "$1" && op='=' || op=!=
 666     eval test "x\$${1#!}" $op "xno"
 667 }
 668
 669 enabled_all(){
 670     for opt; do
 671         enabled $opt || return 1
 672     done
 673 }
 674
 675 disabled_all(){
 676     for opt; do
 677         disabled $opt || return 1
 678     done
 679 }
 680
 681 enabled_any(){
 682     for opt; do
 683         enabled $opt && return 0
 684     done
 685 }
 686
 687 disabled_any(){
 688     for opt; do
 689         disabled $opt && return 0
 690     done
 691     return 1
 692 }
 693
 694 set_default(){
 695     for opt; do
 696         eval : \${$opt:=\$${opt}_default}
 697     done
 698 }
 699
 700 is_in(){
 701     value=$1
 702     shift
 703     for var in $*; do
 704         [ $var = $value ] && return 0
 705     done
 706     return 1
 707 }
 708
 709 do_check_deps(){
 710     for cfg; do
 711         cfg="${cfg#!}"
 712         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 713         disabled ${cfg}_checking && continue
 714         enable ${cfg}_checking
 715         append allopts $cfg
 716
 717         eval dep_all="\$${cfg}_deps"
 718         eval dep_any="\$${cfg}_deps_any"
 719         eval dep_sel="\$${cfg}_select"
 720         eval dep_sgs="\$${cfg}_suggest"
 721         eval dep_ifa="\$${cfg}_if"
 722         eval dep_ifn="\$${cfg}_if_any"
 723
 724         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 725         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 726         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 727
 728         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 729         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 730         enabled_all  $dep_all || disable $cfg
 731         enabled_any  $dep_any || disable $cfg
 732         disabled_any $dep_sel && disable $cfg
 733
 734         if enabled $cfg; then
 735             enable_deep $dep_sel
 736             enable_deep_weak $dep_sgs
 737         fi
 738
 739         disable ${cfg}_checking
 740     done
 741 }
 742
 743 check_deps(){
 744     unset allopts
 745
 746     do_check_deps "$@"
 747
 748     for cfg in $allopts; do
 749         enabled $cfg || continue
 750         eval dep_extralibs="\$${cfg}_extralibs"
 751         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 752     done
 753 }
 754
 755 print_config(){
 756     pfx=$1
 757     files=$2
 758     shift 2
 759     map 'eval echo "$v \${$v:-no}"' "$@" |
 760     awk "BEGIN { split(\"$files\", files) }
 761         {
 762             c = \"$pfx\" toupper(\$1);
 763             v = \$2;
 764             sub(/yes/, 1, v);
 765             sub(/no/,  0, v);
 766             for (f in files) {
 767                 file = files[f];
 768                 if (file ~ /\\.h\$/) {
 769                     printf(\"#define %s %d\\n\", c, v) >>file;
 770                 } else if (file ~ /\\.asm\$/) {
 771                     printf(\"%%define %s %d\\n\", c, v) >>file;
 772                 } else if (file ~ /\\.mak\$/) {
 773                     n = -v ? \"\" : \"!\";
 774                     printf(\"%s%s=yes\\n\", n, c) >>file;
 775                 } else if (file ~ /\\.texi\$/) {
 776                     pre = -v ? \"\" : \"@c \";
 777                     yesno = \$2;
 778                     c2 = tolower(c);
 779                     gsub(/_/, \"-\", c2);
 780                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 781                 }
 782             }
 783         }"
 784 }
 785
 786 print_enabled(){
 787     suf=$1
 788     shift
 789     for v; do
 790         enabled $v && printf "%s\n" ${v%$suf}
 791     done
 792 }
 793
 794 append(){
 795     var=$1
 796     shift
 797     eval "$var=\"\$$var $*\""
 798 }
 799
 800 prepend(){
 801     var=$1
 802     shift
 803     eval "$var=\"$* \$$var\""
 804 }
 805
 806 unique(){
 807     var=$1
 808     uniq_list=""
 809     for tok in $(eval echo \$$var); do
 810         uniq_list="$(filter_out $tok $uniq_list) $tok"
 811     done
 812     eval "$var=\"${uniq_list}\""
 813 }
 814
 815 add_cppflags(){
 816     append CPPFLAGS "$@"
 817 }
 818
 819 add_cflags(){
 820     append CFLAGS $($cflags_filter "$@")
 821 }
 822
 823 add_cxxflags(){
 824     append CXXFLAGS $($cflags_filter "$@")
 825 }
 826
 827 add_asflags(){
 828     append ASFLAGS $($asflags_filter "$@")
 829 }
 830
 831 add_objcflags(){
 832     append OBJCFLAGS $($objcflags_filter "$@")
 833 }
 834
 835 add_ldflags(){
 836     append LDFLAGS $($ldflags_filter "$@")
 837 }
 838
 839 add_ldexeflags(){
 840     append LDEXEFLAGS $($ldflags_filter "$@")
 841 }
 842
 843 add_ldlibflags(){
 844     append LDLIBFLAGS $($ldflags_filter "$@")
 845 }
 846
 847 add_stripflags(){
 848     append ASMSTRIPFLAGS "$@"
 849 }
 850
 851 add_extralibs(){
 852     prepend extralibs $($ldflags_filter "$@")
 853 }
 854
 855 add_host_cppflags(){
 856     append host_cppflags "$@"
 857 }
 858
 859 add_host_cflags(){
 860     append host_cflags $($host_cflags_filter "$@")
 861 }
 862
 863 add_host_ldflags(){
 864     append host_ldflags $($host_ldflags_filter "$@")
 865 }
 866
 867 add_compat(){
 868     append compat_objs $1
 869     shift
 870     map 'add_cppflags -D$v' "$@"
 871 }
 872
 873 check_cmd(){
 874     log "$@"
 875     "$@" >> $logfile 2>&1
 876 }
 877
 878 check_stat(){
 879     log check_stat "$@"
 880     stat "$1" >> $logfile 2>&1
 881 }
 882
 883 cc_o(){
 884     eval printf '%s\\n' $CC_O
 885 }
 886
 887 cc_e(){
 888     eval printf '%s\\n' $CC_E
 889 }
 890
 891 check_cc(){
 892     log check_cc "$@"
 893     cat > $TMPC
 894     log_file $TMPC
 895     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 896 }
 897
 898 check_cxx(){
 899     log check_cxx "$@"
 900     cat > $TMPCPP
 901     log_file $TMPCPP
 902     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 903 }
 904
 905 check_objcc(){
 906     log check_objcc "$@"
 907     cat > $TMPM
 908     log_file $TMPM
 909     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 910 }
 911
 912 check_cpp(){
 913     log check_cpp "$@"
 914     cat > $TMPC
 915     log_file $TMPC
 916     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 917 }
 918
 919 as_o(){
 920     eval printf '%s\\n' $AS_O
 921 }
 922
 923 check_as(){
 924     log check_as "$@"
 925     cat > $TMPS
 926     log_file $TMPS
 927     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 928 }
 929
 930 check_inline_asm(){
 931     log check_inline_asm "$@"
 932     name="$1"
 933     code="$2"
 934     shift 2
 935     disable $name
 936     check_cc "$@" <<EOF && enable $name
 937 void foo(void){ __asm__ volatile($code); }
 938 EOF
 939 }
 940
 941 check_inline_asm_flags(){
 942     log check_inline_asm_flags "$@"
 943     name="$1"
 944     code="$2"
 945     flags=''
 946     shift 2
 947     while [ "$1" != "" ]; do
 948       append flags $1
 949       shift
 950     done;
 951     disable $name
 952     cat > $TMPC <<EOF
 953 void foo(void){ __asm__ volatile($code); }
 954 EOF
 955     log_file $TMPC
 956     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 957     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 958 }
 959
 960 check_insn(){
 961     log check_insn "$@"
 962     check_inline_asm ${1}_inline "\"$2\""
 963     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 964 }
 965
 966 check_yasm(){
 967     log check_yasm "$@"
 968     echo "$1" > $TMPS
 969     log_file $TMPS
 970     shift 1
 971     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 972 }
 973
 974 ld_o(){
 975     eval printf '%s\\n' $LD_O
 976 }
 977
 978 check_ld(){
 979     log check_ld "$@"
 980     type=$1
 981     shift 1
 982     flags=$(filter_out '-l*|*.so' $@)
 983     libs=$(filter '-l*|*.so' $@)
 984     check_$type $($cflags_filter $flags) || return
 985     flags=$($ldflags_filter $flags)
 986     libs=$($ldflags_filter $libs)
 987     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 988 }
 989
 990 print_include(){
 991     hdr=$1
 992     test "${hdr%.h}" = "${hdr}" &&
 993         echo "#include $hdr"    ||
 994         echo "#include <$hdr>"
 995 }
 996
 997 check_code(){
 998     log check_code "$@"
 999     check=$1
1000     headers=$2
1001     code=$3
1002     shift 3
1003     {
1004         for hdr in $headers; do
1005             print_include $hdr
1006         done
1007         echo "int main(void) { $code; return 0; }"
1008     } | check_$check "$@"
1009 }
1010
1011 check_cppflags(){
1012     log check_cppflags "$@"
1013     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1014 int x;
1015 EOF
1016 }
1017
1018 test_cflags(){
1019     log test_cflags "$@"
1020     set -- $($cflags_filter "$@")
1021     check_cc "$@" <<EOF
1022 int x;
1023 EOF
1024 }
1025
1026 check_cflags(){
1027     log check_cflags "$@"
1028     test_cflags "$@" && add_cflags "$@"
1029 }
1030
1031 check_cxxflags(){
1032     log check_cxxflags "$@"
1033     set -- $($cflags_filter "$@")
1034     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1035 int x;
1036 EOF
1037 }
1038
1039 test_objcflags(){
1040     log test_cflags "$@"
1041     set -- $($cflags_filter "$@")
1042     check_objcc "$@" <<EOF
1043 int x;
1044 EOF
1045 }
1046
1047 check_objcflags(){
1048     log check_cflags "$@"
1049     test_objcflags "$@" && add_objcflags "$@"
1050 }
1051
1052 test_ldflags(){
1053     log test_ldflags "$@"
1054     check_ld "cc" "$@" <<EOF
1055 int main(void){ return 0; }
1056 EOF
1057 }
1058
1059 check_ldflags(){
1060     log check_ldflags "$@"
1061     test_ldflags "$@" && add_ldflags "$@"
1062 }
1063
1064 test_stripflags(){
1065     log test_stripflags "$@"
1066     # call check_cc to get a fresh TMPO
1067     check_cc <<EOF
1068 int main(void) { return 0; }
1069 EOF
1070     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1071 }
1072
1073 check_stripflags(){
1074     log check_stripflags "$@"
1075     test_stripflags "$@" && add_stripflags "$@"
1076 }
1077
1078 check_header(){
1079     log check_header "$@"
1080     header=$1
1081     shift
1082     disable_safe $header
1083     check_cpp "$@" <<EOF && enable_safe $header
1084 #include <$header>
1085 int x;
1086 EOF
1087 }
1088
1089 check_header_objcc(){
1090     log check_header_objcc "$@"
1091     rm -f -- "$TMPO"
1092     header=$1
1093     shift
1094     disable_safe $header
1095     {
1096        echo "#include <$header>"
1097        echo "int main(void) { return 0; }"
1098     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1099 }
1100
1101 check_func(){
1102     log check_func "$@"
1103     func=$1
1104     shift
1105     disable $func
1106     check_ld "cc" "$@" <<EOF && enable $func
1107 extern int $func();
1108 int main(void){ $func(); }
1109 EOF
1110 }
1111
1112 check_complexfunc(){
1113     log check_complexfunc "$@"
1114     func=$1
1115     narg=$2
1116     shift 2
1117     test $narg = 2 && args="f, g" || args="f * I"
1118     disable $func
1119     check_ld "cc" "$@" <<EOF && enable $func
1120 #include <complex.h>
1121 #include <math.h>
1122 float foo(complex float f, complex float g) { return $func($args); }
1123 int main(void){ return (int) foo; }
1124 EOF
1125 }
1126
1127 check_mathfunc(){
1128     log check_mathfunc "$@"
1129     func=$1
1130     narg=$2
1131     shift 2
1132     test $narg = 2 && args="f, g" || args="f"
1133     disable $func
1134     check_ld "cc" "$@" <<EOF && enable $func
1135 #include <math.h>
1136 float foo(float f, float g) { return $func($args); }
1137 int main(void){ return (int) foo; }
1138 EOF
1139 }
1140
1141 check_func_headers(){
1142     log check_func_headers "$@"
1143     headers=$1
1144     funcs=$2
1145     shift 2
1146     {
1147         for hdr in $headers; do
1148             print_include $hdr
1149         done
1150         for func in $funcs; do
1151             echo "long check_$func(void) { return (long) $func; }"
1152         done
1153         echo "int main(void) { return 0; }"
1154     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1155 }
1156
1157 check_class_headers_cpp(){
1158     log check_class_headers_cpp "$@"
1159     headers=$1
1160     classes=$2
1161     shift 2
1162     {
1163         for hdr in $headers; do
1164             echo "#include <$hdr>"
1165         done
1166         echo "int main(void) { "
1167         i=1
1168         for class in $classes; do
1169             echo "$class obj$i;"
1170             i=$(expr $i + 1)
1171         done
1172         echo "return 0; }"
1173     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1174 }
1175
1176 check_cpp_condition(){
1177     log check_cpp_condition "$@"
1178     header=$1
1179     condition=$2
1180     shift 2
1181     check_cpp "$@" <<EOF
1182 #include <$header>
1183 #if !($condition)
1184 #error "unsatisfied condition: $condition"
1185 #endif
1186 EOF
1187 }
1188
1189 check_lib(){
1190     log check_lib "$@"
1191     header="$1"
1192     func="$2"
1193     shift 2
1194     check_header $header && check_func $func "$@" && add_extralibs "$@"
1195 }
1196
1197 check_lib2(){
1198     log check_lib2 "$@"
1199     headers="$1"
1200     funcs="$2"
1201     shift 2
1202     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1203 }
1204
1205 check_lib_cpp(){
1206     log check_lib_cpp "$@"
1207     headers="$1"
1208     classes="$2"
1209     shift 2
1210     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1211 }
1212
1213 check_pkg_config(){
1214     log check_pkg_config "$@"
1215     pkgandversion="$1"
1216     pkg="${1%% *}"
1217     headers="$2"
1218     funcs="$3"
1219     shift 3
1220     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1221     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1222     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1223     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1224         set_safe "${pkg}_cflags" $pkg_cflags   &&
1225         set_safe "${pkg}_libs"   $pkg_libs
1226 }
1227
1228 check_exec(){
1229     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1230 }
1231
1232 check_exec_crash(){
1233     code=$(cat)
1234
1235     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1236     # are safe but may not be available everywhere.  Thus we use
1237     # raise(SIGTERM) instead.  The check is run in a subshell so we
1238     # can redirect the "Terminated" message from the shell.  SIGBUS
1239     # is not defined by standard C so it is used conditionally.
1240
1241     (check_exec "$@") >> $logfile 2>&1 <<EOF
1242 #include <signal.h>
1243 static void sighandler(int sig){
1244     raise(SIGTERM);
1245 }
1246 int foo(void){
1247     $code
1248 }
1249 int (*func_ptr)(void) = foo;
1250 int main(void){
1251     signal(SIGILL, sighandler);
1252     signal(SIGFPE, sighandler);
1253     signal(SIGSEGV, sighandler);
1254 #ifdef SIGBUS
1255     signal(SIGBUS, sighandler);
1256 #endif
1257     return func_ptr();
1258 }
1259 EOF
1260 }
1261
1262 check_type(){
1263     log check_type "$@"
1264     headers=$1
1265     type=$2
1266     shift 2
1267     disable_safe "$type"
1268     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1269 }
1270
1271 check_struct(){
1272     log check_struct "$@"
1273     headers=$1
1274     struct=$2
1275     member=$3
1276     shift 3
1277     disable_safe "${struct}_${member}"
1278     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1279         enable_safe "${struct}_${member}"
1280 }
1281
1282 check_builtin(){
1283     log check_builtin "$@"
1284     name=$1
1285     headers=$2
1286     builtin=$3
1287     shift 3
1288     disable "$name"
1289     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1290 }
1291
1292 check_compile_assert(){
1293     log check_compile_assert "$@"
1294     name=$1
1295     headers=$2
1296     condition=$3
1297     shift 3
1298     disable "$name"
1299     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1300 }
1301
1302 require(){
1303     name="$1"
1304     header="$2"
1305     func="$3"
1306     shift 3
1307     check_lib $header $func "$@" || die "ERROR: $name not found"
1308 }
1309
1310 require2(){
1311     name="$1"
1312     headers="$2"
1313     func="$3"
1314     shift 3
1315     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1316 }
1317
1318 require_cpp(){
1319     name="$1"
1320     headers="$2"
1321     classes="$3"
1322     shift 3
1323     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1324 }
1325
1326 use_pkg_config(){
1327     pkg="$1"
1328     check_pkg_config "$@" || return 1
1329     add_cflags    $(get_safe "${pkg}_cflags")
1330     add_extralibs $(get_safe "${pkg}_libs")
1331 }
1332
1333 require_pkg_config(){
1334     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1335 }
1336
1337 require_libfreetype(){
1338     log require_libfreetype "$@"
1339     pkg="freetype2"
1340     check_cmd $pkg_config --exists --print-errors $pkg \
1341       || die "ERROR: $pkg not found"
1342     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1343     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1344     {
1345         echo "#include <ft2build.h>"
1346         echo "#include FT_FREETYPE_H"
1347         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1348         echo "int main(void) { return 0; }"
1349     } | check_ld "cc" $pkg_cflags $pkg_libs \
1350       && set_safe "${pkg}_cflags" $pkg_cflags \
1351       && set_safe "${pkg}_libs"   $pkg_libs \
1352       || die "ERROR: $pkg not found"
1353     add_cflags    $(get_safe "${pkg}_cflags")
1354     add_extralibs $(get_safe "${pkg}_libs")
1355 }
1356
1357 hostcc_e(){
1358     eval printf '%s\\n' $HOSTCC_E
1359 }
1360
1361 hostcc_o(){
1362     eval printf '%s\\n' $HOSTCC_O
1363 }
1364
1365 check_host_cc(){
1366     log check_host_cc "$@"
1367     cat > $TMPC
1368     log_file $TMPC
1369     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1370 }
1371
1372 check_host_cpp(){
1373     log check_host_cpp "$@"
1374     cat > $TMPC
1375     log_file $TMPC
1376     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1377 }
1378
1379 check_host_cppflags(){
1380     log check_host_cppflags "$@"
1381     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1382 int x;
1383 EOF
1384 }
1385
1386 check_host_cflags(){
1387     log check_host_cflags "$@"
1388     set -- $($host_cflags_filter "$@")
1389     check_host_cc "$@" <<EOF && append host_cflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cpp_condition(){
1395     log check_host_cpp_condition "$@"
1396     header=$1
1397     condition=$2
1398     shift 2
1399     check_host_cpp "$@" <<EOF
1400 #include <$header>
1401 #if !($condition)
1402 #error "unsatisfied condition: $condition"
1403 #endif
1404 EOF
1405 }
1406
1407 cp_if_changed(){
1408     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1409     mkdir -p "$(dirname $2)"
1410     $cp_f "$1" "$2"
1411 }
1412
1413 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1414 # system-dependent things.
1415
1416 AVCODEC_COMPONENTS="
1417     bsfs
1418     decoders
1419     encoders
1420     hwaccels
1421     parsers
1422 "
1423
1424 AVDEVICE_COMPONENTS="
1425     indevs
1426     outdevs
1427 "
1428 AVFILTER_COMPONENTS="
1429     filters
1430 "
1431 AVFORMAT_COMPONENTS="
1432     demuxers
1433     muxers
1434     protocols
1435 "
1436
1437 AVRESAMPLE_COMPONENTS=""
1438 AVUTIL_COMPONENTS=""
1439
1440 COMPONENT_LIST="
1441     $AVCODEC_COMPONENTS
1442     $AVDEVICE_COMPONENTS
1443     $AVFILTER_COMPONENTS
1444     $AVFORMAT_COMPONENTS
1445     $AVRESAMPLE_COMPONENTS
1446     $AVUTIL_COMPONENTS
1447 "
1448
1449 EXAMPLE_LIST="
1450     avio_reading_example
1451     avio_dir_cmd_example
1452     decoding_encoding_example
1453     demuxing_decoding_example
1454     extract_mvs_example
1455     filter_audio_example
1456     filtering_audio_example
1457     filtering_video_example
1458     metadata_example
1459     muxing_example
1460     qsvdec_example
1461     remuxing_example
1462     resampling_audio_example
1463     scaling_video_example
1464     transcode_aac_example
1465     transcoding_example
1466 "
1467
1468 EXTERNAL_LIBRARY_LIST="
1469     audiotoolbox
1470     avisynth
1471     bzlib
1472     chromaprint
1473     crystalhd
1474     decklink
1475     frei0r
1476     gcrypt
1477     gmp
1478     gnutls
1479     iconv
1480     jni
1481     ladspa
1482     libass
1483     libbluray
1484     libbs2b
1485     libcaca
1486     libcdio
1487     libcelt
1488     libdc1394
1489     libebur128
1490     libfaac
1491     libfdk_aac
1492     libflite
1493     libfontconfig
1494     libfreetype
1495     libfribidi
1496     libgme
1497     libgsm
1498     libiec61883
1499     libilbc
1500     libkvazaar
1501     libmodplug
1502     libmp3lame
1503     libnut
1504     libnpp
1505     libopencore_amrnb
1506     libopencore_amrwb
1507     libopencv
1508     libopenh264
1509     libopenjpeg
1510     libopus
1511     libpulse
1512     librtmp
1513     librubberband
1514     libschroedinger
1515     libshine
1516     libsmbclient
1517     libsnappy
1518     libsoxr
1519     libspeex
1520     libssh
1521     libtesseract
1522     libtheora
1523     libtwolame
1524     libv4l2
1525     libvidstab
1526     libvo_amrwbenc
1527     libvorbis
1528     libvpx
1529     libwavpack
1530     libwebp
1531     libx264
1532     libx265
1533     libxavs
1534     libxcb
1535     libxcb_shm
1536     libxcb_shape
1537     libxcb_xfixes
1538     libxvid
1539     libzimg
1540     libzmq
1541     libzvbi
1542     lzma
1543     mediacodec
1544     netcdf
1545     openal
1546     opencl
1547     opengl
1548     openssl
1549     schannel
1550     sdl
1551     securetransport
1552     videotoolbox
1553     x11grab
1554     xlib
1555     zlib
1556 "
1557
1558 DOCUMENT_LIST="
1559     doc
1560     htmlpages
1561     manpages
1562     podpages
1563     txtpages
1564 "
1565
1566 FEATURE_LIST="
1567     ftrapv
1568     gray
1569     hardcoded_tables
1570     omx_rpi
1571     runtime_cpudetect
1572     safe_bitstream_reader
1573     shared
1574     small
1575     static
1576     swscale_alpha
1577 "
1578
1579 HW_CODECS_LIST="
1580     cuda
1581     cuvid
1582     libmfx
1583     mmal
1584     nvenc
1585     omx
1586 "
1587
1588 HWACCEL_LIST="
1589     d3d11va
1590     dxva2
1591     vaapi
1592     vda
1593     vdpau
1594     videotoolbox_hwaccel
1595     xvmc
1596 "
1597
1598 LIBRARY_LIST="
1599     avcodec
1600     avdevice
1601     avfilter
1602     avformat
1603     avresample
1604     avutil
1605     postproc
1606     swresample
1607     swscale
1608 "
1609
1610 LICENSE_LIST="
1611     gpl
1612     nonfree
1613     version3
1614 "
1615
1616 PROGRAM_LIST="
1617     ffplay
1618     ffprobe
1619     ffserver
1620     ffmpeg
1621 "
1622
1623 SUBSYSTEM_LIST="
1624     dct
1625     dwt
1626     error_resilience
1627     faan
1628     fast_unaligned
1629     fft
1630     lsp
1631     lzo
1632     mdct
1633     pixelutils
1634     network
1635     rdft
1636 "
1637
1638 CONFIG_LIST="
1639     $COMPONENT_LIST
1640     $DOCUMENT_LIST
1641     $EXAMPLE_LIST
1642     $EXTERNAL_LIBRARY_LIST
1643     $FEATURE_LIST
1644     $HW_CODECS_LIST
1645     $HWACCEL_LIST
1646     $LICENSE_LIST
1647     $LIBRARY_LIST
1648     $PROGRAM_LIST
1649     $SUBSYSTEM_LIST
1650     fontconfig
1651     incompatible_libav_abi
1652     memalign_hack
1653     memory_poisoning
1654     neon_clobber_test
1655     pic
1656     pod2man
1657     raise_major
1658     thumb
1659     valgrind_backtrace
1660     xmm_clobber_test
1661 "
1662
1663 THREADS_LIST="
1664     pthreads
1665     os2threads
1666     w32threads
1667 "
1668
1669 ATOMICS_LIST="
1670     atomics_gcc
1671     atomics_suncc
1672     atomics_win32
1673 "
1674
1675 ARCH_LIST="
1676     aarch64
1677     alpha
1678     arm
1679     avr32
1680     avr32_ap
1681     avr32_uc
1682     bfin
1683     ia64
1684     m68k
1685     mips
1686     mips64
1687     parisc
1688     ppc
1689     ppc64
1690     s390
1691     sh4
1692     sparc
1693     sparc64
1694     tilegx
1695     tilepro
1696     tomi
1697     x86
1698     x86_32
1699     x86_64
1700 "
1701
1702 ARCH_EXT_LIST_ARM="
1703     armv5te
1704     armv6
1705     armv6t2
1706     armv8
1707     neon
1708     vfp
1709     vfpv3
1710     setend
1711 "
1712
1713 ARCH_EXT_LIST_MIPS="
1714     mipsfpu
1715     mips32r2
1716     mips32r5
1717     mips64r2
1718     mips32r6
1719     mips64r6
1720     mipsdsp
1721     mipsdspr2
1722     msa
1723 "
1724
1725 ARCH_EXT_LIST_LOONGSON="
1726     loongson2
1727     loongson3
1728     mmi
1729 "
1730
1731 ARCH_EXT_LIST_X86_SIMD="
1732     aesni
1733     amd3dnow
1734     amd3dnowext
1735     avx
1736     avx2
1737     fma3
1738     fma4
1739     mmx
1740     mmxext
1741     sse
1742     sse2
1743     sse3
1744     sse4
1745     sse42
1746     ssse3
1747     xop
1748 "
1749
1750 ARCH_EXT_LIST_PPC="
1751     altivec
1752     dcbzl
1753     ldbrx
1754     power8
1755     ppc4xx
1756     vsx
1757 "
1758
1759 ARCH_EXT_LIST_X86="
1760     $ARCH_EXT_LIST_X86_SIMD
1761     cpunop
1762     i686
1763 "
1764
1765 ARCH_EXT_LIST="
1766     $ARCH_EXT_LIST_ARM
1767     $ARCH_EXT_LIST_PPC
1768     $ARCH_EXT_LIST_X86
1769     $ARCH_EXT_LIST_MIPS
1770     $ARCH_EXT_LIST_LOONGSON
1771 "
1772
1773 ARCH_FEATURES="
1774     aligned_stack
1775     fast_64bit
1776     fast_clz
1777     fast_cmov
1778     local_aligned_8
1779     local_aligned_16
1780     local_aligned_32
1781     simd_align_16
1782 "
1783
1784 BUILTIN_LIST="
1785     atomic_cas_ptr
1786     atomic_compare_exchange
1787     machine_rw_barrier
1788     MemoryBarrier
1789     mm_empty
1790     rdtsc
1791     sarestart
1792     sem_timedwait
1793     sync_val_compare_and_swap
1794 "
1795 HAVE_LIST_CMDLINE="
1796     inline_asm
1797     symver
1798     yasm
1799 "
1800
1801 HAVE_LIST_PUB="
1802     bigendian
1803     fast_unaligned
1804     incompatible_libav_abi
1805 "
1806
1807 HEADERS_LIST="
1808     alsa_asoundlib_h
1809     altivec_h
1810     arpa_inet_h
1811     asm_types_h
1812     cdio_paranoia_h
1813     cdio_paranoia_paranoia_h
1814     dispatch_dispatch_h
1815     dev_bktr_ioctl_bt848_h
1816     dev_bktr_ioctl_meteor_h
1817     dev_ic_bt8xx_h
1818     dev_video_bktr_ioctl_bt848_h
1819     dev_video_meteor_ioctl_meteor_h
1820     direct_h
1821     dirent_h
1822     dlfcn_h
1823     d3d11_h
1824     dxva_h
1825     ES2_gl_h
1826     gsm_h
1827     io_h
1828     mach_mach_time_h
1829     machine_ioctl_bt848_h
1830     machine_ioctl_meteor_h
1831     malloc_h
1832     opencv2_core_core_c_h
1833     openjpeg_2_1_openjpeg_h
1834     openjpeg_2_0_openjpeg_h
1835     openjpeg_1_5_openjpeg_h
1836     OpenGL_gl3_h
1837     poll_h
1838     sndio_h
1839     soundcard_h
1840     sys_mman_h
1841     sys_param_h
1842     sys_resource_h
1843     sys_select_h
1844     sys_soundcard_h
1845     sys_time_h
1846     sys_un_h
1847     sys_videoio_h
1848     termios_h
1849     udplite_h
1850     unistd_h
1851     valgrind_valgrind_h
1852     windows_h
1853     winsock2_h
1854 "
1855
1856 INTRINSICS_LIST="
1857     intrinsics_neon
1858 "
1859
1860 COMPLEX_FUNCS="
1861     cabs
1862     cexp
1863 "
1864
1865 MATH_FUNCS="
1866     atanf
1867     atan2f
1868     cbrt
1869     cbrtf
1870     copysign
1871     cosf
1872     erf
1873     exp2
1874     exp2f
1875     expf
1876     hypot
1877     isfinite
1878     isinf
1879     isnan
1880     ldexpf
1881     llrint
1882     llrintf
1883     log2
1884     log2f
1885     log10f
1886     lrint
1887     lrintf
1888     powf
1889     rint
1890     round
1891     roundf
1892     sinf
1893     trunc
1894     truncf
1895 "
1896
1897 SYSTEM_FUNCS="
1898     access
1899     aligned_malloc
1900     arc4random
1901     clock_gettime
1902     closesocket
1903     CommandLineToArgvW
1904     CoTaskMemFree
1905     CryptGenRandom
1906     dlopen
1907     fcntl
1908     flt_lim
1909     fork
1910     getaddrinfo
1911     gethrtime
1912     getopt
1913     GetProcessAffinityMask
1914     GetProcessMemoryInfo
1915     GetProcessTimes
1916     getrusage
1917     GetSystemTimeAsFileTime
1918     gettimeofday
1919     glob
1920     glXGetProcAddress
1921     gmtime_r
1922     inet_aton
1923     isatty
1924     jack_port_get_latency_range
1925     kbhit
1926     localtime_r
1927     lstat
1928     lzo1x_999_compress
1929     mach_absolute_time
1930     MapViewOfFile
1931     memalign
1932     mkstemp
1933     mmap
1934     mprotect
1935     nanosleep
1936     PeekNamedPipe
1937     posix_memalign
1938     pthread_cancel
1939     sched_getaffinity
1940     SetConsoleTextAttribute
1941     SetConsoleCtrlHandler
1942     setmode
1943     setrlimit
1944     Sleep
1945     strerror_r
1946     sysconf
1947     sysctl
1948     usleep
1949     UTGetOSTypeFromString
1950     VirtualAlloc
1951     wglGetProcAddress
1952 "
1953
1954 TOOLCHAIN_FEATURES="
1955     as_dn_directive
1956     as_func
1957     as_object_arch
1958     asm_mod_q
1959     attribute_may_alias
1960     attribute_packed
1961     ebp_available
1962     ebx_available
1963     gnu_as
1964     gnu_windres
1965     ibm_asm
1966     inline_asm_direct_symbol_refs
1967     inline_asm_labels
1968     inline_asm_nonlocal_labels
1969     pragma_deprecated
1970     rsync_contimeout
1971     symver_asm_label
1972     symver_gnu_asm
1973     vfp_args
1974     xform_asm
1975     xmm_clobbers
1976 "
1977
1978 TYPES_LIST="
1979     CONDITION_VARIABLE_Ptr
1980     socklen_t
1981     struct_addrinfo
1982     struct_group_source_req
1983     struct_ip_mreq_source
1984     struct_ipv6_mreq
1985     struct_msghdr_msg_flags
1986     struct_pollfd
1987     struct_rusage_ru_maxrss
1988     struct_sctp_event_subscribe
1989     struct_sockaddr_in6
1990     struct_sockaddr_sa_len
1991     struct_sockaddr_storage
1992     struct_stat_st_mtim_tv_nsec
1993     struct_v4l2_frmivalenum_discrete
1994 "
1995
1996 HAVE_LIST="
1997     $ARCH_EXT_LIST
1998     $(add_suffix _external $ARCH_EXT_LIST)
1999     $(add_suffix _inline   $ARCH_EXT_LIST)
2000     $ARCH_FEATURES
2001     $ATOMICS_LIST
2002     $BUILTIN_LIST
2003     $COMPLEX_FUNCS
2004     $HAVE_LIST_CMDLINE
2005     $HAVE_LIST_PUB
2006     $HEADERS_LIST
2007     $INTRINSICS_LIST
2008     $MATH_FUNCS
2009     $SYSTEM_FUNCS
2010     $THREADS_LIST
2011     $TOOLCHAIN_FEATURES
2012     $TYPES_LIST
2013     atomics_native
2014     dos_paths
2015     dxva2_lib
2016     dxva2api_cobj
2017     libc_msvcrt
2018     libdc1394_1
2019     libdc1394_2
2020     makeinfo
2021     makeinfo_html
2022     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2023     perl
2024     pod2man
2025     sdl
2026     section_data_rel_ro
2027     texi2html
2028     threads
2029     vaapi_drm
2030     vaapi_x11
2031     vdpau_x11
2032     winrt
2033     xlib
2034 "
2035
2036 # options emitted with CONFIG_ prefix but not available on the command line
2037 CONFIG_EXTRA="
2038     aandcttables
2039     ac3dsp
2040     audio_frame_queue
2041     audiodsp
2042     blockdsp
2043     bswapdsp
2044     cabac
2045     dirac_parse
2046     dvprofile
2047     exif
2048     faandct
2049     faanidct
2050     fdctdsp
2051     flacdsp
2052     fmtconvert
2053     frame_thread_encoder
2054     g722dsp
2055     golomb
2056     gplv3
2057     h263dsp
2058     h264chroma
2059     h264dsp
2060     h264pred
2061     h264qpel
2062     hpeldsp
2063     huffman
2064     huffyuvdsp
2065     huffyuvencdsp
2066     idctdsp
2067     iirfilter
2068     imdct15
2069     intrax8
2070     iso_media
2071     ividsp
2072     jpegtables
2073     lgplv3
2074     libx262
2075     llauddsp
2076     llviddsp
2077     lpc
2078     lzf
2079     me_cmp
2080     mpeg_er
2081     mpegaudio
2082     mpegaudiodsp
2083     mpegvideo
2084     mpegvideoenc
2085     mss34dsp
2086     pixblockdsp
2087     qpeldsp
2088     qsv
2089     qsvdec
2090     qsvenc
2091     rangecoder
2092     riffdec
2093     riffenc
2094     rtpdec
2095     rtpenc_chain
2096     rv34dsp
2097     sinewin
2098     snappy
2099     srtp
2100     startcode
2101     texturedsp
2102     texturedspenc
2103     tpeldsp
2104     vaapi_encode
2105     vc1dsp
2106     videodsp
2107     vp3dsp
2108     vp56dsp
2109     vp8dsp
2110     vt_bt2020
2111     wma_freqs
2112     wmv2dsp
2113 "
2114
2115 CMDLINE_SELECT="
2116     $ARCH_EXT_LIST
2117     $CONFIG_LIST
2118     $HAVE_LIST_CMDLINE
2119     $THREADS_LIST
2120     asm
2121     cross_compile
2122     debug
2123     extra_warnings
2124     logging
2125     lto
2126     optimizations
2127     rpath
2128     stripping
2129 "
2130
2131 PATHS_LIST="
2132     bindir
2133     datadir
2134     docdir
2135     incdir
2136     libdir
2137     mandir
2138     pkgconfigdir
2139     prefix
2140     shlibdir
2141     install_name_dir
2142 "
2143
2144 CMDLINE_SET="
2145     $PATHS_LIST
2146     ar
2147     arch
2148     as
2149     assert_level
2150     build_suffix
2151     cc
2152     objcc
2153     cpu
2154     cross_prefix
2155     custom_allocator
2156     cxx
2157     dep_cc
2158     doxygen
2159     env
2160     extra_version
2161     gas
2162     host_cc
2163     host_cflags
2164     host_ld
2165     host_ldflags
2166     host_libs
2167     host_os
2168     install
2169     ld
2170     ln_s
2171     logfile
2172     malloc_prefix
2173     nm
2174     optflags
2175     pkg_config
2176     pkg_config_flags
2177     progs_suffix
2178     random_seed
2179     ranlib
2180     samples
2181     strip
2182     sws_max_filter_size
2183     sysinclude
2184     sysroot
2185     target_exec
2186     target_os
2187     target_path
2188     target_samples
2189     tempprefix
2190     toolchain
2191     valgrind
2192     yasmexe
2193 "
2194
2195 CMDLINE_APPEND="
2196     extra_cflags
2197     extra_cxxflags
2198     extra_objcflags
2199     host_cppflags
2200 "
2201
2202 # code dependency declarations
2203
2204 # architecture extensions
2205
2206 armv5te_deps="arm"
2207 armv6_deps="arm"
2208 armv6t2_deps="arm"
2209 armv8_deps="aarch64"
2210 neon_deps_any="aarch64 arm"
2211 intrinsics_neon_deps="neon"
2212 vfp_deps_any="aarch64 arm"
2213 vfpv3_deps="vfp"
2214 setend_deps="arm"
2215
2216 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2217
2218 mipsfpu_deps="mips"
2219 mipsdsp_deps="mips"
2220 mipsdspr2_deps="mips"
2221 mips32r2_deps="mips"
2222 mips32r5_deps="mips"
2223 mips32r6_deps="mips"
2224 mips64r2_deps="mips"
2225 mips64r6_deps="mips"
2226 msa_deps="mipsfpu"
2227 mmi_deps="mips"
2228
2229 altivec_deps="ppc"
2230 dcbzl_deps="ppc"
2231 ldbrx_deps="ppc"
2232 ppc4xx_deps="ppc"
2233 vsx_deps="altivec"
2234 power8_deps="vsx"
2235
2236 cpunop_deps="i686"
2237 x86_64_select="i686"
2238 x86_64_suggest="fast_cmov"
2239
2240 amd3dnow_deps="mmx"
2241 amd3dnowext_deps="amd3dnow"
2242 i686_deps="x86"
2243 mmx_deps="x86"
2244 mmxext_deps="mmx"
2245 sse_deps="mmxext"
2246 sse2_deps="sse"
2247 sse3_deps="sse2"
2248 ssse3_deps="sse3"
2249 sse4_deps="ssse3"
2250 sse42_deps="sse4"
2251 aesni_deps="sse42"
2252 avx_deps="sse42"
2253 xop_deps="avx"
2254 fma3_deps="avx"
2255 fma4_deps="avx"
2256 avx2_deps="avx"
2257
2258 mmx_external_deps="yasm"
2259 mmx_inline_deps="inline_asm"
2260 mmx_suggest="mmx_external mmx_inline"
2261
2262 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2263     eval dep=\$${ext}_deps
2264     eval ${ext}_external_deps='"${dep}_external"'
2265     eval ${ext}_inline_deps='"${dep}_inline"'
2266     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2267 done
2268
2269 aligned_stack_if_any="aarch64 ppc x86"
2270 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2271 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2272 fast_unaligned_if_any="aarch64 ppc x86"
2273 simd_align_16_if_any="altivec neon sse"
2274
2275 # system capabilities
2276 symver_if_any="symver_asm_label symver_gnu_asm"
2277 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2278
2279 # threading support
2280 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2281 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2282 atomics_win32_if="MemoryBarrier"
2283 atomics_native_if_any="$ATOMICS_LIST"
2284 w32threads_deps="atomics_native"
2285 threads_if_any="$THREADS_LIST"
2286
2287 # subsystems
2288 dct_select="rdft"
2289 dirac_parse_select="golomb"
2290 error_resilience_select="me_cmp"
2291 faandct_deps="faan fdctdsp"
2292 faanidct_deps="faan idctdsp"
2293 h264dsp_select="startcode"
2294 frame_thread_encoder_deps="encoders threads"
2295 intrax8_select="blockdsp idctdsp"
2296 mdct_select="fft"
2297 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2298 mpeg_er_select="error_resilience"
2299 mpegaudio_select="mpegaudiodsp"
2300 mpegaudiodsp_select="dct"
2301 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2302 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2303 vc1dsp_select="h264chroma qpeldsp startcode"
2304 rdft_select="fft"
2305
2306 # decoders / encoders
2307 aac_decoder_select="imdct15 mdct sinewin"
2308 aac_fixed_decoder_select="mdct sinewin"
2309 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2310 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2311 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2312 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2313 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2314 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2315 adpcm_g722_decoder_select="g722dsp"
2316 adpcm_g722_encoder_select="g722dsp"
2317 aic_decoder_select="golomb idctdsp"
2318 alac_encoder_select="lpc"
2319 als_decoder_select="bswapdsp"
2320 amrnb_decoder_select="lsp"
2321 amrwb_decoder_select="lsp"
2322 amv_decoder_select="sp5x_decoder exif"
2323 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2324 ape_decoder_select="bswapdsp llauddsp"
2325 apng_decoder_select="zlib"
2326 apng_encoder_select="huffyuvencdsp zlib"
2327 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2328 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2329 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2330 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2331 atrac1_decoder_select="mdct sinewin"
2332 atrac3_decoder_select="mdct"
2333 atrac3p_decoder_select="mdct sinewin"
2334 avrn_decoder_select="exif jpegtables"
2335 bink_decoder_select="blockdsp hpeldsp"
2336 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2337 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2338 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2339 cllc_decoder_select="bswapdsp"
2340 comfortnoise_encoder_select="lpc"
2341 cook_decoder_select="audiodsp mdct sinewin"
2342 cscd_decoder_select="lzo"
2343 cscd_decoder_suggest="zlib"
2344 dca_decoder_select="mdct"
2345 dds_decoder_select="texturedsp"
2346 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2347 dnxhd_decoder_select="blockdsp idctdsp"
2348 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2349 dvvideo_decoder_select="dvprofile idctdsp"
2350 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2351 dxa_decoder_select="zlib"
2352 dxv_decoder_select="lzf texturedsp"
2353 eac3_decoder_select="ac3_decoder"
2354 eac3_encoder_select="ac3_encoder"
2355 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2356 eatgq_decoder_select="aandcttables"
2357 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2358 exr_decoder_select="zlib"
2359 ffv1_decoder_select="golomb rangecoder"
2360 ffv1_encoder_select="rangecoder"
2361 ffvhuff_decoder_select="huffyuv_decoder"
2362 ffvhuff_encoder_select="huffyuv_encoder"
2363 fic_decoder_select="golomb"
2364 flac_decoder_select="flacdsp golomb"
2365 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2366 flashsv2_decoder_select="zlib"
2367 flashsv2_encoder_select="zlib"
2368 flashsv_decoder_select="zlib"
2369 flashsv_encoder_select="zlib"
2370 flv_decoder_select="h263_decoder"
2371 flv_encoder_select="h263_encoder"
2372 fourxm_decoder_select="blockdsp bswapdsp"
2373 fraps_decoder_select="bswapdsp huffman"
2374 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2375 g729_decoder_select="audiodsp"
2376 h261_decoder_select="mpegvideo"
2377 h261_encoder_select="aandcttables mpegvideoenc"
2378 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2379 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2380 h263i_decoder_select="h263_decoder"
2381 h263p_decoder_select="h263_decoder"
2382 h263p_encoder_select="h263_encoder"
2383 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2384 h264_decoder_suggest="error_resilience"
2385 hap_decoder_select="snappy texturedsp"
2386 hap_encoder_deps="libsnappy"
2387 hap_encoder_select="texturedspenc"
2388 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2389 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2390 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2391 iac_decoder_select="imc_decoder"
2392 imc_decoder_select="bswapdsp fft mdct sinewin"
2393 indeo3_decoder_select="hpeldsp"
2394 indeo4_decoder_select="ividsp"
2395 indeo5_decoder_select="ividsp"
2396 interplay_video_decoder_select="hpeldsp"
2397 jpegls_decoder_select="golomb mjpeg_decoder"
2398 jpegls_encoder_select="golomb"
2399 jv_decoder_select="blockdsp"
2400 lagarith_decoder_select="huffyuvdsp"
2401 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2402 loco_decoder_select="golomb"
2403 magicyuv_decoder_select="huffyuvdsp"
2404 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2405 metasound_decoder_select="lsp mdct sinewin"
2406 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2407 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2408 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2409 mjpegb_decoder_select="mjpeg_decoder"
2410 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2411 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2412 mlp_decoder_select="mlp_parser"
2413 motionpixels_decoder_select="bswapdsp"
2414 mp1_decoder_select="mpegaudio"
2415 mp1float_decoder_select="mpegaudio"
2416 mp2_decoder_select="mpegaudio"
2417 mp2float_decoder_select="mpegaudio"
2418 mp3_decoder_select="mpegaudio"
2419 mp3adu_decoder_select="mpegaudio"
2420 mp3adufloat_decoder_select="mpegaudio"
2421 mp3float_decoder_select="mpegaudio"
2422 mp3on4_decoder_select="mpegaudio"
2423 mp3on4float_decoder_select="mpegaudio"
2424 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2425 mpc8_decoder_select="mpegaudiodsp"
2426 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2427 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2428 mpegvideo_decoder_select="mpegvideo"
2429 mpeg1video_decoder_select="mpegvideo"
2430 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2431 mpeg2video_decoder_select="mpegvideo"
2432 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2433 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2434 mpeg4_encoder_select="h263_encoder"
2435 msa1_decoder_select="mss34dsp"
2436 msmpeg4v1_decoder_select="h263_decoder"
2437 msmpeg4v2_decoder_select="h263_decoder"
2438 msmpeg4v2_encoder_select="h263_encoder"
2439 msmpeg4v3_decoder_select="h263_decoder"
2440 msmpeg4v3_encoder_select="h263_encoder"
2441 mss2_decoder_select="vc1_decoder mpegvideo"
2442 mts2_decoder_select="mss34dsp"
2443 mxpeg_decoder_select="mjpeg_decoder"
2444 nellymoser_decoder_select="mdct sinewin"
2445 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2446 nuv_decoder_select="idctdsp lzo"
2447 on2avc_decoder_select="mdct"
2448 opus_decoder_deps="swresample"
2449 opus_decoder_select="imdct15"
2450 png_decoder_select="zlib"
2451 png_encoder_select="huffyuvencdsp zlib"
2452 prores_decoder_select="blockdsp idctdsp"
2453 prores_encoder_select="fdctdsp"
2454 qcelp_decoder_select="lsp"
2455 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2456 ra_144_decoder_select="audiodsp"
2457 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2458 ralf_decoder_select="golomb"
2459 rawvideo_decoder_select="bswapdsp"
2460 rscc_decoder_select="zlib"
2461 rtjpeg_decoder_select="me_cmp"
2462 rv10_decoder_select="h263_decoder"
2463 rv10_encoder_select="h263_encoder"
2464 rv20_decoder_select="h263_decoder"
2465 rv20_encoder_select="h263_encoder"
2466 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2467 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2468 screenpresso_decoder_select="zlib"
2469 shorten_decoder_select="golomb"
2470 sipr_decoder_select="lsp"
2471 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2472 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2473 sonic_decoder_select="golomb rangecoder"
2474 sonic_encoder_select="golomb rangecoder"
2475 sonic_ls_encoder_select="golomb rangecoder"
2476 sp5x_decoder_select="mjpeg_decoder"
2477 svq1_decoder_select="hpeldsp"
2478 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2479 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2480 svq3_decoder_suggest="zlib"
2481 tak_decoder_select="audiodsp"
2482 tdsc_decoder_select="zlib mjpeg_decoder"
2483 theora_decoder_select="vp3_decoder"
2484 thp_decoder_select="mjpeg_decoder"
2485 tiff_decoder_suggest="zlib lzma"
2486 tiff_encoder_suggest="zlib"
2487 truehd_decoder_select="mlp_parser"
2488 truemotion2_decoder_select="bswapdsp"
2489 truespeech_decoder_select="bswapdsp"
2490 tscc_decoder_select="zlib"
2491 twinvq_decoder_select="mdct lsp sinewin"
2492 txd_decoder_select="texturedsp"
2493 utvideo_decoder_select="bswapdsp"
2494 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2495 vble_decoder_select="huffyuvdsp"
2496 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2497 vc1_qsv_decoder_deps="libmfx"
2498 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2499 vc1image_decoder_select="vc1_decoder"
2500 vorbis_decoder_select="mdct"
2501 vorbis_encoder_select="mdct"
2502 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2503 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2504 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2505 vp6a_decoder_select="vp6_decoder"
2506 vp6f_decoder_select="vp6_decoder"
2507 vp7_decoder_select="h264pred videodsp vp8dsp"
2508 vp8_decoder_select="h264pred videodsp vp8dsp"
2509 vp9_decoder_select="videodsp vp9_parser"
2510 webp_decoder_select="vp8_decoder exif"
2511 wmalossless_decoder_select="llauddsp"
2512 wmapro_decoder_select="mdct sinewin wma_freqs"
2513 wmav1_decoder_select="mdct sinewin wma_freqs"
2514 wmav1_encoder_select="mdct sinewin wma_freqs"
2515 wmav2_decoder_select="mdct sinewin wma_freqs"
2516 wmav2_encoder_select="mdct sinewin wma_freqs"
2517 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2518 wmv1_decoder_select="h263_decoder"
2519 wmv1_encoder_select="h263_encoder"
2520 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2521 wmv2_encoder_select="h263_encoder wmv2dsp"
2522 wmv3_decoder_select="vc1_decoder"
2523 wmv3image_decoder_select="wmv3_decoder"
2524 xma1_decoder_select="wmapro_decoder"
2525 xma2_decoder_select="wmapro_decoder"
2526 zerocodec_decoder_select="zlib"
2527 zlib_decoder_select="zlib"
2528 zlib_encoder_select="zlib"
2529 zmbv_decoder_select="zlib"
2530 zmbv_encoder_select="zlib"
2531
2532 # platform codecs
2533 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2534 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2535
2536 # hardware accelerators
2537 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2538 cuvid_deps="cuda"
2539 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2540 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2541 vaapi_deps="va_va_h"
2542 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2543 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2544 vda_deps="vda_framework pthreads"
2545 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2546 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2547 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2548 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2549 xvmc_deps="X11_extensions_XvMClib_h"
2550
2551 h263_vaapi_hwaccel_deps="vaapi"
2552 h263_vaapi_hwaccel_select="h263_decoder"
2553 h263_videotoolbox_hwaccel_deps="videotoolbox"
2554 h263_videotoolbox_hwaccel_select="h263_decoder"
2555 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2556 h264_cuvid_hwaccel_deps="cuda cuvid CUVIDH264PICPARAMS"
2557 h264_d3d11va_hwaccel_deps="d3d11va"
2558 h264_d3d11va_hwaccel_select="h264_decoder"
2559 h264_dxva2_hwaccel_deps="dxva2"
2560 h264_dxva2_hwaccel_select="h264_decoder"
2561 h264_mediacodec_decoder_deps="mediacodec"
2562 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2563 h264_mmal_decoder_deps="mmal"
2564 h264_mmal_decoder_select="mmal"
2565 h264_mmal_hwaccel_deps="mmal"
2566 h264_omx_encoder_deps="omx"
2567 h264_qsv_hwaccel_deps="libmfx"
2568 h264_vaapi_hwaccel_deps="vaapi"
2569 h264_vaapi_hwaccel_select="h264_decoder"
2570 h264_vda_decoder_deps="vda"
2571 h264_vda_decoder_select="h264_decoder"
2572 h264_vda_hwaccel_deps="vda"
2573 h264_vda_hwaccel_select="h264_decoder"
2574 h264_vda_old_hwaccel_deps="vda"
2575 h264_vda_old_hwaccel_select="h264_decoder"
2576 h264_vdpau_decoder_deps="vdpau"
2577 h264_vdpau_decoder_select="h264_decoder"
2578 h264_vdpau_hwaccel_deps="vdpau"
2579 h264_vdpau_hwaccel_select="h264_decoder"
2580 h264_videotoolbox_hwaccel_deps="videotoolbox"
2581 h264_videotoolbox_hwaccel_select="h264_decoder"
2582 hevc_cuvid_hwaccel_deps="cuda cuvid CUVIDHEVCPICPARAMS"
2583 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2584 hevc_d3d11va_hwaccel_select="hevc_decoder"
2585 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2586 hevc_dxva2_hwaccel_select="hevc_decoder"
2587 hevc_qsv_hwaccel_deps="libmfx"
2588 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2589 hevc_vaapi_hwaccel_select="hevc_decoder"
2590 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2591 hevc_vdpau_hwaccel_select="hevc_decoder"
2592 mpeg_vdpau_decoder_deps="vdpau"
2593 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2594 mpeg_xvmc_hwaccel_deps="xvmc"
2595 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2596 mpeg1_vdpau_decoder_deps="vdpau"
2597 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2598 mpeg1_vdpau_hwaccel_deps="vdpau"
2599 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2600 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2601 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2602 mpeg1_xvmc_hwaccel_deps="xvmc"
2603 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2604 mpeg2_crystalhd_decoder_select="crystalhd"
2605 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2606 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2607 mpeg2_dxva2_hwaccel_deps="dxva2"
2608 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2609 mpeg2_mmal_decoder_deps="mmal"
2610 mpeg2_mmal_decoder_select="mmal"
2611 mpeg2_mmal_hwaccel_deps="mmal"
2612 mpeg2_qsv_hwaccel_deps="libmfx"
2613 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2614 mpeg2_vaapi_hwaccel_deps="vaapi"
2615 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2616 mpeg2_vdpau_hwaccel_deps="vdpau"
2617 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2618 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2619 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2620 mpeg2_xvmc_hwaccel_deps="xvmc"
2621 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2622 mpeg4_crystalhd_decoder_select="crystalhd"
2623 mpeg4_mmal_decoder_deps="mmal"
2624 mpeg4_mmal_decoder_select="mmal"
2625 mpeg4_mmal_hwaccel_deps="mmal"
2626 mpeg4_omx_encoder_deps="omx"
2627 mpeg4_vaapi_hwaccel_deps="vaapi"
2628 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2629 mpeg4_vdpau_decoder_deps="vdpau"
2630 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2631 mpeg4_vdpau_hwaccel_deps="vdpau"
2632 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2633 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2634 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2635 msmpeg4_crystalhd_decoder_select="crystalhd"
2636 vc1_crystalhd_decoder_select="crystalhd"
2637 vc1_cuvid_hwaccel_deps="cuda cuvid CUVIDVC1PICPARAMS"
2638 vc1_d3d11va_hwaccel_deps="d3d11va"
2639 vc1_d3d11va_hwaccel_select="vc1_decoder"
2640 vc1_dxva2_hwaccel_deps="dxva2"
2641 vc1_dxva2_hwaccel_select="vc1_decoder"
2642 vc1_mmal_decoder_deps="mmal"
2643 vc1_mmal_decoder_select="mmal"
2644 vc1_mmal_hwaccel_deps="mmal"
2645 vc1_qsv_hwaccel_deps="libmfx"
2646 vc1_qsv_hwaccel_select="qsvdec_vc1"
2647 vc1_vaapi_hwaccel_deps="vaapi"
2648 vc1_vaapi_hwaccel_select="vc1_decoder"
2649 vc1_vdpau_decoder_deps="vdpau"
2650 vc1_vdpau_decoder_select="vc1_decoder"
2651 vc1_vdpau_hwaccel_deps="vdpau"
2652 vc1_vdpau_hwaccel_select="vc1_decoder"
2653 vp8_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
2654 vp9_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
2655 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2656 vp9_d3d11va_hwaccel_select="vp9_decoder"
2657 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2658 vp9_dxva2_hwaccel_select="vp9_decoder"
2659 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2660 vp9_vaapi_hwaccel_select="vp9_decoder"
2661 wmv3_crystalhd_decoder_select="crystalhd"
2662 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2663 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2664 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2665 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2666 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2667
2668 # hardware-accelerated codecs
2669 omx_deps="dlopen pthreads"
2670 omx_extralibs='$ldl'
2671 qsvdec_select="qsv"
2672 qsvenc_select="qsv"
2673 vaapi_encode_deps="vaapi"
2674
2675 hwupload_cuda_filter_deps="cuda"
2676 scale_npp_filter_deps="cuda libnpp"
2677
2678 nvenc_encoder_deps="nvenc"
2679 h264_cuvid_decoder_deps="cuda cuvid CUVIDH264PICPARAMS"
2680 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2681 h264_qsv_decoder_deps="libmfx"
2682 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2683 h264_qsv_encoder_deps="libmfx"
2684 h264_qsv_encoder_select="qsvenc"
2685 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2686 h264_vaapi_encoder_select="vaapi_encode golomb"
2687
2688 hevc_cuvid_decoder_deps="cuda cuvid CUVIDHEVCPICPARAMS"
2689 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2690 hevc_qsv_decoder_deps="libmfx"
2691 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2692 hevc_qsv_encoder_deps="libmfx"
2693 hevc_qsv_encoder_select="qsvenc"
2694 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2695 hevc_vaapi_encoder_select="vaapi_encode golomb"
2696 mpeg2_qsv_decoder_deps="libmfx"
2697 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2698 mpeg2_qsv_encoder_deps="libmfx"
2699 mpeg2_qsv_encoder_select="qsvenc"
2700 nvenc_h264_encoder_deps="nvenc"
2701 nvenc_hevc_encoder_deps="nvenc"
2702
2703 vc1_cuvid_decoder_deps="cuda cuvid CUVIDVC1PICPARAMS"
2704 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2705 vp8_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
2706 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2707 vp9_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
2708 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2709
2710 # parsers
2711 h264_parser_select="golomb h264dsp"
2712 hevc_parser_select="golomb"
2713 mpegvideo_parser_select="mpegvideo"
2714 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2715 vc1_parser_select="vc1dsp"
2716
2717 # bitstream_filters
2718 mjpeg2jpeg_bsf_select="jpegtables"
2719
2720 # external libraries
2721 aac_at_decoder_deps="audiotoolbox"
2722 ac3_at_decoder_deps="audiotoolbox"
2723 ac3_at_decoder_select="ac3_parser"
2724 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2725 alac_at_decoder_deps="audiotoolbox"
2726 amr_nb_at_decoder_deps="audiotoolbox"
2727 eac3_at_decoder_deps="audiotoolbox"
2728 eac3_at_decoder_select="ac3_parser"
2729 gsm_ms_at_decoder_deps="audiotoolbox"
2730 ilbc_at_decoder_deps="audiotoolbox"
2731 mp1_at_decoder_deps="audiotoolbox"
2732 mp2_at_decoder_deps="audiotoolbox"
2733 mp3_at_decoder_deps="audiotoolbox"
2734 pcm_alaw_at_decoder_deps="audiotoolbox"
2735 pcm_mulaw_at_decoder_deps="audiotoolbox"
2736 qdmc_at_decoder_deps="audiotoolbox"
2737 qdm2_at_decoder_deps="audiotoolbox"
2738 aac_at_encoder_deps="audiotoolbox"
2739 aac_at_encoder_select="audio_frame_queue"
2740 alac_at_encoder_deps="audiotoolbox"
2741 alac_at_encoder_select="audio_frame_queue"
2742 ilbc_at_encoder_deps="audiotoolbox"
2743 ilbc_at_encoder_select="audio_frame_queue"
2744 pcm_alaw_at_encoder_deps="audiotoolbox"
2745 pcm_alaw_at_encoder_select="audio_frame_queue"
2746 pcm_mulaw_at_encoder_deps="audiotoolbox"
2747 pcm_mulaw_at_encoder_select="audio_frame_queue"
2748 chromaprint_muxer_deps="chromaprint"
2749 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2750 libcelt_decoder_deps="libcelt"
2751 libfaac_encoder_deps="libfaac"
2752 libfaac_encoder_select="audio_frame_queue"
2753 libfdk_aac_decoder_deps="libfdk_aac"
2754 libfdk_aac_encoder_deps="libfdk_aac"
2755 libfdk_aac_encoder_select="audio_frame_queue"
2756 libgme_demuxer_deps="libgme"
2757 libgsm_decoder_deps="libgsm"
2758 libgsm_encoder_deps="libgsm"
2759 libgsm_ms_decoder_deps="libgsm"
2760 libgsm_ms_encoder_deps="libgsm"
2761 libilbc_decoder_deps="libilbc"
2762 libilbc_encoder_deps="libilbc"
2763 libkvazaar_encoder_deps="libkvazaar"
2764 libmodplug_demuxer_deps="libmodplug"
2765 libmp3lame_encoder_deps="libmp3lame"
2766 libmp3lame_encoder_select="audio_frame_queue"
2767 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2768 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2769 libopencore_amrnb_encoder_select="audio_frame_queue"
2770 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2771 libopenh264_encoder_deps="libopenh264"
2772 libopenjpeg_decoder_deps="libopenjpeg"
2773 libopenjpeg_encoder_deps="libopenjpeg"
2774 libopus_decoder_deps="libopus"
2775 libopus_encoder_deps="libopus"
2776 libopus_encoder_select="audio_frame_queue"
2777 libschroedinger_decoder_deps="libschroedinger"
2778 libschroedinger_encoder_deps="libschroedinger"
2779 libshine_encoder_deps="libshine"
2780 libshine_encoder_select="audio_frame_queue"
2781 libspeex_decoder_deps="libspeex"
2782 libspeex_encoder_deps="libspeex"
2783 libspeex_encoder_select="audio_frame_queue"
2784 libtheora_encoder_deps="libtheora"
2785 libtwolame_encoder_deps="libtwolame"
2786 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2787 libvorbis_decoder_deps="libvorbis"
2788 libvorbis_encoder_deps="libvorbis"
2789 libvorbis_encoder_select="audio_frame_queue"
2790 libvpx_vp8_decoder_deps="libvpx"
2791 libvpx_vp8_encoder_deps="libvpx"
2792 libvpx_vp9_decoder_deps="libvpx"
2793 libvpx_vp9_encoder_deps="libvpx"
2794 libwavpack_encoder_deps="libwavpack"
2795 libwebp_encoder_deps="libwebp"
2796 libwebp_anim_encoder_deps="libwebp"
2797 libx262_encoder_deps="libx262"
2798 libx264_encoder_deps="libx264"
2799 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2800 libx264rgb_encoder_select="libx264_encoder"
2801 libx265_encoder_deps="libx265"
2802 libxavs_encoder_deps="libxavs"
2803 libxvid_encoder_deps="libxvid"
2804 libzvbi_teletext_decoder_deps="libzvbi"
2805 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2806 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2807 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2808 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2809 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2810
2811 # demuxers / muxers
2812 ac3_demuxer_select="ac3_parser"
2813 asf_demuxer_select="riffdec"
2814 asf_o_demuxer_select="riffdec"
2815 asf_muxer_select="riffenc"
2816 asf_stream_muxer_select="asf_muxer"
2817 avi_demuxer_select="iso_media riffdec exif"
2818 avi_muxer_select="riffenc"
2819 avisynth_demuxer_deps="avisynth"
2820 avisynth_demuxer_select="riffdec"
2821 caf_demuxer_select="iso_media riffdec"
2822 dash_muxer_select="mp4_muxer"
2823 dirac_demuxer_select="dirac_parser"
2824 dts_demuxer_select="dca_parser"
2825 dtshd_demuxer_select="dca_parser"
2826 dv_demuxer_select="dvprofile"
2827 dv_muxer_select="dvprofile"
2828 dxa_demuxer_select="riffdec"
2829 eac3_demuxer_select="ac3_parser"
2830 f4v_muxer_select="mov_muxer"
2831 flac_demuxer_select="flac_parser"
2832 hds_muxer_select="flv_muxer"
2833 hls_muxer_select="mpegts_muxer"
2834 image2_alias_pix_demuxer_select="image2_demuxer"
2835 image2_brender_pix_demuxer_select="image2_demuxer"
2836 ipod_muxer_select="mov_muxer"
2837 ismv_muxer_select="mov_muxer"
2838 libnut_demuxer_deps="libnut"
2839 libnut_muxer_deps="libnut"
2840 matroska_audio_muxer_select="matroska_muxer"
2841 matroska_demuxer_select="iso_media riffdec"
2842 matroska_demuxer_suggest="bzlib lzo zlib"
2843 matroska_muxer_select="iso_media riffenc"
2844 mmf_muxer_select="riffenc"
2845 mov_demuxer_select="iso_media riffdec"
2846 mov_demuxer_suggest="zlib"
2847 mov_muxer_select="iso_media riffenc rtpenc_chain"
2848 mp3_demuxer_select="mpegaudio_parser"
2849 mp4_muxer_select="mov_muxer"
2850 mpegts_demuxer_select="iso_media"
2851 mpegts_muxer_select="adts_muxer latm_muxer"
2852 mpegtsraw_demuxer_select="mpegts_demuxer"
2853 mxf_d10_muxer_select="mxf_muxer"
2854 mxf_opatom_muxer_select="mxf_muxer"
2855 nut_muxer_select="riffenc"
2856 nuv_demuxer_select="riffdec"
2857 oga_muxer_select="ogg_muxer"
2858 ogg_demuxer_select="dirac_parse"
2859 opus_muxer_select="ogg_muxer"
2860 psp_muxer_select="mov_muxer"
2861 rtp_demuxer_select="sdp_demuxer"
2862 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2863 rtsp_demuxer_select="http_protocol rtpdec"
2864 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2865 sap_demuxer_select="sdp_demuxer"
2866 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2867 sdp_demuxer_select="rtpdec"
2868 smoothstreaming_muxer_select="ismv_muxer"
2869 spdif_muxer_select="aac_parser"
2870 spx_muxer_select="ogg_muxer"
2871 swf_demuxer_suggest="zlib"
2872 tak_demuxer_select="tak_parser"
2873 tg2_muxer_select="mov_muxer"
2874 tgp_muxer_select="mov_muxer"
2875 vobsub_demuxer_select="mpegps_demuxer"
2876 w64_demuxer_select="wav_demuxer"
2877 w64_muxer_select="wav_muxer"
2878 wav_demuxer_select="riffdec"
2879 wav_muxer_select="riffenc"
2880 webm_muxer_select="iso_media riffenc"
2881 webm_dash_manifest_demuxer_select="matroska_demuxer"
2882 wtv_demuxer_select="mpegts_demuxer riffdec"
2883 wtv_muxer_select="mpegts_muxer riffenc"
2884 xmv_demuxer_select="riffdec"
2885 xwma_demuxer_select="riffdec"
2886
2887 # indevs / outdevs
2888 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2889 alsa_outdev_deps="alsa_asoundlib_h"
2890 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2891 avfoundation_indev_select="avfoundation"
2892 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2893 caca_outdev_deps="libcaca"
2894 decklink_indev_deps="decklink pthreads"
2895 decklink_indev_extralibs="-lstdc++"
2896 decklink_outdev_deps="decklink pthreads"
2897 decklink_outdev_extralibs="-lstdc++"
2898 dshow_indev_deps="IBaseFilter"
2899 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2900 dv1394_indev_deps="dv1394"
2901 dv1394_indev_select="dv_demuxer"
2902 fbdev_indev_deps="linux_fb_h"
2903 fbdev_outdev_deps="linux_fb_h"
2904 gdigrab_indev_deps="CreateDIBSection"
2905 gdigrab_indev_extralibs="-lgdi32"
2906 gdigrab_indev_select="bmp_decoder"
2907 iec61883_indev_deps="libiec61883"
2908 jack_indev_deps="jack_jack_h"
2909 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2910 lavfi_indev_deps="avfilter"
2911 libcdio_indev_deps="libcdio"
2912 libdc1394_indev_deps="libdc1394"
2913 libv4l2_indev_deps="libv4l2"
2914 openal_indev_deps="openal"
2915 opengl_outdev_deps="opengl"
2916 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2917 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2918 pulse_indev_deps="libpulse"
2919 pulse_outdev_deps="libpulse"
2920 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2921 qtkit_indev_select="qtkit"
2922 sdl_outdev_deps="sdl"
2923 sndio_indev_deps="sndio_h"
2924 sndio_outdev_deps="sndio_h"
2925 v4l_indev_deps="linux_videodev_h"
2926 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2927 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2928 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2929 vfwcap_indev_extralibs="-lavicap32"
2930 x11grab_indev_deps="x11grab"
2931 x11grab_xcb_indev_deps="libxcb"
2932 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2933 xv_outdev_extralibs="-lXv -lX11 -lXext"
2934
2935 # protocols
2936 async_protocol_deps="threads"
2937 bluray_protocol_deps="libbluray"
2938 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2939 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2940 ffrtmpcrypt_protocol_select="tcp_protocol"
2941 ffrtmphttp_protocol_deps="!librtmp_protocol"
2942 ffrtmphttp_protocol_select="http_protocol"
2943 ftp_protocol_select="tcp_protocol"
2944 gopher_protocol_select="network"
2945 http_protocol_select="tcp_protocol"
2946 httpproxy_protocol_select="tcp_protocol"
2947 https_protocol_select="tls_protocol"
2948 icecast_protocol_select="http_protocol"
2949 librtmp_protocol_deps="librtmp"
2950 librtmpe_protocol_deps="librtmp"
2951 librtmps_protocol_deps="librtmp"
2952 librtmpt_protocol_deps="librtmp"
2953 librtmpte_protocol_deps="librtmp"
2954 libsmbclient_protocol_deps="libsmbclient gplv3"
2955 libssh_protocol_deps="libssh"
2956 mmsh_protocol_select="http_protocol"
2957 mmst_protocol_select="network"
2958 rtmp_protocol_deps="!librtmp_protocol"
2959 rtmp_protocol_select="tcp_protocol"
2960 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2961 rtmps_protocol_deps="!librtmp_protocol"
2962 rtmps_protocol_select="tls_protocol"
2963 rtmpt_protocol_select="ffrtmphttp_protocol"
2964 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2965 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2966 rtp_protocol_select="udp_protocol"
2967 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2968 sctp_protocol_select="network"
2969 srtp_protocol_select="rtp_protocol srtp"
2970 tcp_protocol_select="network"
2971 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2972 tls_gnutls_protocol_select="tcp_protocol"
2973 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2974 tls_openssl_protocol_select="tcp_protocol"
2975 tls_schannel_protocol_deps="schannel"
2976 tls_schannel_protocol_select="tcp_protocol"
2977 tls_securetransport_protocol_deps="securetransport"
2978 tls_securetransport_protocol_select="tcp_protocol"
2979 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2980 udp_protocol_select="network"
2981 udplite_protocol_select="network"
2982 unix_protocol_deps="sys_un_h"
2983 unix_protocol_select="network"
2984
2985 # filters
2986 afftfilt_filter_deps="avcodec"
2987 afftfilt_filter_select="fft"
2988 amovie_filter_deps="avcodec avformat"
2989 aresample_filter_deps="swresample"
2990 ass_filter_deps="libass"
2991 asyncts_filter_deps="avresample"
2992 atempo_filter_deps="avcodec"
2993 atempo_filter_select="rdft"
2994 azmq_filter_deps="libzmq"
2995 blackframe_filter_deps="gpl"
2996 boxblur_filter_deps="gpl"
2997 bs2b_filter_deps="libbs2b"
2998 colormatrix_filter_deps="gpl"
2999 cover_rect_filter_deps="avcodec avformat gpl"
3000 cropdetect_filter_deps="gpl"
3001 delogo_filter_deps="gpl"
3002 deshake_filter_select="pixelutils"
3003 drawtext_filter_deps="libfreetype"
3004 ebur128_filter_deps="gpl"
3005 eq_filter_deps="gpl"
3006 fftfilt_filter_deps="avcodec"
3007 fftfilt_filter_select="rdft"
3008 find_rect_filter_deps="avcodec avformat gpl"
3009 firequalizer_filter_deps="avcodec"
3010 firequalizer_filter_select="rdft"
3011 flite_filter_deps="libflite"
3012 framerate_filter_select="pixelutils"
3013 frei0r_filter_deps="frei0r dlopen"
3014 frei0r_src_filter_deps="frei0r dlopen"
3015 fspp_filter_deps="gpl"
3016 geq_filter_deps="gpl"
3017 histeq_filter_deps="gpl"
3018 hqdn3d_filter_deps="gpl"
3019 interlace_filter_deps="gpl"
3020 kerndeint_filter_deps="gpl"
3021 ladspa_filter_deps="ladspa dlopen"
3022 loudnorm_filter_deps="libebur128"
3023 mcdeint_filter_deps="avcodec gpl"
3024 movie_filter_deps="avcodec avformat"
3025 mpdecimate_filter_deps="gpl"
3026 mpdecimate_filter_select="pixelutils"
3027 mptestsrc_filter_deps="gpl"
3028 negate_filter_deps="lut_filter"
3029 nnedi_filter_deps="gpl"
3030 ocr_filter_deps="libtesseract"
3031 ocv_filter_deps="libopencv"
3032 owdenoise_filter_deps="gpl"
3033 pan_filter_deps="swresample"
3034 perspective_filter_deps="gpl"
3035 phase_filter_deps="gpl"
3036 pp7_filter_deps="gpl"
3037 pp_filter_deps="gpl postproc"
3038 pullup_filter_deps="gpl"
3039 removelogo_filter_deps="avcodec avformat swscale"
3040 repeatfields_filter_deps="gpl"
3041 resample_filter_deps="avresample"
3042 rubberband_filter_deps="librubberband"
3043 sab_filter_deps="gpl swscale"
3044 scale2ref_filter_deps="swscale"
3045 scale_filter_deps="swscale"
3046 select_filter_select="pixelutils"
3047 showcqt_filter_deps="avcodec avformat swscale"
3048 showcqt_filter_select="fft"
3049 showfreqs_filter_deps="avcodec"
3050 showfreqs_filter_select="fft"
3051 showspectrum_filter_deps="avcodec"
3052 showspectrum_filter_select="fft"
3053 showspectrumpic_filter_deps="avcodec"
3054 showspectrumpic_filter_select="fft"
3055 smartblur_filter_deps="gpl swscale"
3056 sofalizer_filter_deps="netcdf avcodec"
3057 sofalizer_filter_select="fft"
3058 spectrumsynth_filter_deps="avcodec"
3059 spectrumsynth_filter_select="fft"
3060 spp_filter_deps="gpl avcodec"
3061 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3062 stereo3d_filter_deps="gpl"
3063 subtitles_filter_deps="avformat avcodec libass"
3064 super2xsai_filter_deps="gpl"
3065 pixfmts_super2xsai_test_deps="super2xsai_filter"
3066 tinterlace_filter_deps="gpl"
3067 tinterlace_merge_test_deps="tinterlace_filter"
3068 tinterlace_pad_test_deps="tinterlace_filter"
3069 uspp_filter_deps="gpl avcodec"
3070 vidstabdetect_filter_deps="libvidstab"
3071 vidstabtransform_filter_deps="libvidstab"
3072 zmq_filter_deps="libzmq"
3073 zoompan_filter_deps="swscale"
3074 zscale_filter_deps="libzimg"
3075 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3076
3077 # examples
3078 avcodec_example_deps="avcodec avutil"
3079 avio_dir_cmd="avformat avutil"
3080 avio_reading="avformat avcodec avutil"
3081 decoding_encoding_example_deps="avcodec avformat avutil"
3082 demuxing_decoding_example_deps="avcodec avformat avutil"
3083 extract_mvs_example_deps="avcodec avformat avutil"
3084 filter_audio_example_deps="avfilter avutil"
3085 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3086 filtering_video_example_deps="avfilter avcodec avformat avutil"
3087 metadata_example_deps="avformat avutil"
3088 muxing_example_deps="avcodec avformat avutil swscale"
3089 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3090 remuxing_example_deps="avcodec avformat avutil"
3091 resampling_audio_example_deps="avutil swresample"
3092 scaling_video_example_deps="avutil swscale"
3093 transcode_aac_example_deps="avcodec avformat swresample"
3094 transcoding_example_deps="avfilter avcodec avformat avutil"
3095
3096 # libraries, in linking order
3097 avcodec_deps="avutil"
3098 avdevice_deps="avformat avcodec avutil"
3099 avfilter_deps="avutil"
3100 avformat_deps="avcodec avutil"
3101 avresample_deps="avutil"
3102 postproc_deps="avutil gpl"
3103 swresample_deps="avutil"
3104 swscale_deps="avutil"
3105
3106 # programs
3107 ffmpeg_deps="avcodec avfilter avformat swresample"
3108 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3109                null_filter
3110                setpts_filter trim_filter"
3111 ffplay_deps="avcodec avformat swscale swresample sdl"
3112 ffplay_libs='$sdl_libs'
3113 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3114 ffprobe_deps="avcodec avformat"
3115 ffserver_deps="avformat fork sarestart"
3116 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3117
3118 # documentation
3119 podpages_deps="perl"
3120 manpages_deps="perl pod2man"
3121 htmlpages_deps="perl"
3122 htmlpages_deps_any="makeinfo_html texi2html"
3123 txtpages_deps="perl makeinfo"
3124 doc_deps_any="manpages htmlpages podpages txtpages"
3125
3126 # default parameters
3127
3128 logfile="config.log"
3129
3130 # installation paths
3131 prefix_default="/usr/local"
3132 bindir_default='${prefix}/bin'
3133 datadir_default='${prefix}/share/ffmpeg'
3134 docdir_default='${prefix}/share/doc/ffmpeg'
3135 incdir_default='${prefix}/include'
3136 libdir_default='${prefix}/lib'
3137 mandir_default='${prefix}/share/man'
3138
3139 # toolchain
3140 ar_default="ar"
3141 cc_default="gcc"
3142 cxx_default="g++"
3143 host_cc_default="gcc"
3144 cp_f="cp -f"
3145 doxygen_default="doxygen"
3146 install="install"
3147 ln_s_default="ln -s -f"
3148 nm_default="nm -g"
3149 objformat="elf"
3150 pkg_config_default=pkg-config
3151 ranlib_default="ranlib"
3152 strip_default="strip"
3153 yasmexe_default="yasm"
3154 windres_default="windres"
3155
3156 # OS
3157 target_os_default=$(tolower $(uname -s))
3158 host_os=$target_os_default
3159
3160 # machine
3161 if test "$target_os_default" = aix; then
3162     arch_default=$(uname -p)
3163     strip_default="strip -X32_64"
3164 else
3165     arch_default=$(uname -m)
3166 fi
3167 cpu="generic"
3168 intrinsics="none"
3169
3170 # configurable options
3171 enable $PROGRAM_LIST
3172 enable $DOCUMENT_LIST
3173 enable $EXAMPLE_LIST
3174 enable $(filter_out avresample $LIBRARY_LIST)
3175 enable stripping
3176
3177 enable asm
3178 enable debug
3179 enable doc
3180 enable faan faandct faanidct
3181 enable optimizations
3182 enable runtime_cpudetect
3183 enable safe_bitstream_reader
3184 enable static
3185 enable swscale_alpha
3186 enable valgrind_backtrace
3187
3188 sws_max_filter_size_default=256
3189 set_default sws_max_filter_size
3190
3191 # Enable platform codecs by default.
3192 enable audiotoolbox
3193
3194 # Enable hwaccels by default.
3195 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3196 enable xlib
3197
3198 enable vda_framework videotoolbox videotoolbox_encoder
3199
3200 # build settings
3201 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3202 LIBPREF="lib"
3203 LIBSUF=".a"
3204 FULLNAME='$(NAME)$(BUILDSUF)'
3205 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3206 SLIBPREF="lib"
3207 SLIBSUF=".so"
3208 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3209 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3210 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3211 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3212 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3213 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3214
3215 asflags_filter=echo
3216 cflags_filter=echo
3217 ldflags_filter=echo
3218
3219 AS_C='-c'
3220 AS_O='-o $@'
3221 CC_C='-c'
3222 CC_E='-E -o $@'
3223 CC_O='-o $@'
3224 CXX_C='-c'
3225 CXX_O='-o $@'
3226 OBJCC_C='-c'
3227 OBJCC_E='-E -o $@'
3228 OBJCC_O='-o $@'
3229 LD_O='-o $@'
3230 LD_LIB='-l%'
3231 LD_PATH='-L'
3232 HOSTCC_C='-c'
3233 HOSTCC_E='-E -o $@'
3234 HOSTCC_O='-o $@'
3235 HOSTLD_O='-o $@'
3236
3237 host_libs='-lm'
3238 host_cflags_filter=echo
3239 host_ldflags_filter=echo
3240
3241 target_path='$(CURDIR)'
3242
3243 # since the object filename is not given with the -MM flag, the compiler
3244 # is only able to print the basename, and we must add the path ourselves
3245 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3246 DEPFLAGS='-MM'
3247
3248 # find source path
3249 if test -f configure; then
3250     source_path=.
3251 else
3252     source_path=$(cd $(dirname "$0"); pwd)
3253     case "$source_path" in
3254         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3255     esac
3256     test -e "$source_path/config.h" &&
3257         die "Out of tree builds are impossible with config.h in source dir."
3258 fi
3259
3260 for v in "$@"; do
3261     r=${v#*=}
3262     l=${v%"$r"}
3263     r=$(sh_quote "$r")
3264     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3265 done
3266
3267 find_things(){
3268     thing=$1
3269     pattern=$2
3270     file=$source_path/$3
3271     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3272 }
3273
3274 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3275 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3276 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3277 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3278 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3279 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3280 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3281 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3282 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3283
3284 find_things_extern(){
3285     thing=$1
3286     pattern=$2
3287     file=$source_path/$3
3288     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3289 }
3290
3291 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3292 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3293
3294 ALL_COMPONENTS="
3295     $BSF_LIST
3296     $DECODER_LIST
3297     $DEMUXER_LIST
3298     $ENCODER_LIST
3299     $FILTER_LIST
3300     $HWACCEL_LIST
3301     $INDEV_LIST
3302     $MUXER_LIST
3303     $OUTDEV_LIST
3304     $PARSER_LIST
3305     $PROTOCOL_LIST
3306 "
3307
3308 for n in $COMPONENT_LIST; do
3309     v=$(toupper ${n%s})_LIST
3310     eval enable \$$v
3311     eval ${n}_if_any="\$$v"
3312 done
3313
3314 enable $ARCH_EXT_LIST
3315
3316 die_unknown(){
3317     echo "Unknown option \"$1\"."
3318     echo "See $0 --help for available options."
3319     exit 1
3320 }
3321
3322 print_in_columns() {
3323     cols=$(expr $ncols / 24)
3324     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3325 }
3326
3327 show_list() {
3328     suffix=_$1
3329     shift
3330     echo $* | sed s/$suffix//g | print_in_columns
3331     exit 0
3332 }
3333
3334 rand_list(){
3335     IFS=', '
3336     set -- $*
3337     unset IFS
3338     for thing; do
3339         comp=${thing%:*}
3340         prob=${thing#$comp}
3341         prob=${prob#:}
3342         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3343         echo "prob ${prob:-0.5}"
3344         printf '%s\n' $comp
3345     done
3346 }
3347
3348 do_random(){
3349     action=$1
3350     shift
3351     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3352     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3353 }
3354
3355 for opt do
3356     optval="${opt#*=}"
3357     case "$opt" in
3358         --extra-ldflags=*)
3359             add_ldflags $optval
3360         ;;
3361         --extra-ldexeflags=*)
3362             add_ldexeflags $optval
3363         ;;
3364         --extra-ldlibflags=*)
3365             add_ldlibflags $optval
3366         ;;
3367         --extra-libs=*)
3368             add_extralibs $optval
3369         ;;
3370         --disable-devices)
3371             disable $INDEV_LIST $OUTDEV_LIST
3372         ;;
3373         --enable-debug=*)
3374             debuglevel="$optval"
3375         ;;
3376         --disable-programs)
3377             disable $PROGRAM_LIST
3378         ;;
3379         --disable-everything)
3380             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3381         ;;
3382         --disable-all)
3383             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3384             disable $LIBRARY_LIST $PROGRAM_LIST doc
3385             enable avutil
3386         ;;
3387         --enable-random|--disable-random)
3388             action=${opt%%-random}
3389             do_random ${action#--} $COMPONENT_LIST
3390         ;;
3391         --enable-random=*|--disable-random=*)
3392             action=${opt%%-random=*}
3393             do_random ${action#--} $optval
3394         ;;
3395         --enable-*=*|--disable-*=*)
3396             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3397             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3398             eval list=\$$(toupper $thing)_LIST
3399             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3400             list=$(filter "$name" $list)
3401             [ "$list" = "" ] && warn "Option $opt did not match anything"
3402             $action $list
3403         ;;
3404         --enable-?*|--disable-?*)
3405             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3406             if is_in $option $COMPONENT_LIST; then
3407                 test $action = disable && action=unset
3408                 eval $action \$$(toupper ${option%s})_LIST
3409             elif is_in $option $CMDLINE_SELECT; then
3410                 $action $option
3411             else
3412                 die_unknown $opt
3413             fi
3414         ;;
3415         --list-*)
3416             NAME="${opt#--list-}"
3417             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3418             NAME=${NAME%s}
3419             eval show_list $NAME \$$(toupper $NAME)_LIST
3420         ;;
3421         --help|-h) show_help
3422         ;;
3423         --fatal-warnings) enable fatal_warnings
3424         ;;
3425         *)
3426             optname="${opt%%=*}"
3427             optname="${optname#--}"
3428             optname=$(echo "$optname" | sed 's/-/_/g')
3429             if is_in $optname $CMDLINE_SET; then
3430                 eval $optname='$optval'
3431             elif is_in $optname $CMDLINE_APPEND; then
3432                 append $optname "$optval"
3433             else
3434                 die_unknown $opt
3435             fi
3436         ;;
3437     esac
3438 done
3439
3440 for e in $env; do
3441     eval "export $e"
3442 done
3443
3444 disabled logging && logfile=/dev/null
3445
3446 # Disable all the library-specific components if the library itself
3447 # is disabled, see AVCODEC_LIST and following _LIST variables.
3448
3449 disable_components(){
3450     disabled ${1} && disable $(
3451         eval components="\$$(toupper ${1})_COMPONENTS"
3452         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3453     )
3454 }
3455
3456 map 'disable_components $v' $LIBRARY_LIST
3457
3458 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3459 set >> $logfile
3460
3461 test -n "$valgrind" && toolchain="valgrind-memcheck"
3462
3463 case "$toolchain" in
3464     *-asan)
3465         cc_default="${toolchain%-asan}"
3466         add_cflags  -fsanitize=address
3467         add_ldflags -fsanitize=address
3468     ;;
3469     *-msan)
3470         cc_default="${toolchain%-msan}"
3471         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3472         add_ldflags -fsanitize=memory
3473     ;;
3474     *-tsan)
3475         cc_default="${toolchain%-tsan}"
3476         add_cflags  -fsanitize=thread -pie
3477         add_ldflags -fsanitize=thread -pie
3478         case "$toolchain" in
3479             gcc-tsan)
3480                 add_cflags  -fPIC
3481                 add_ldflags -fPIC
3482                 ;;
3483         esac
3484     ;;
3485     *-usan)
3486         cc_default="${toolchain%-usan}"
3487         add_cflags  -fsanitize=undefined
3488         add_ldflags -fsanitize=undefined
3489     ;;
3490     valgrind-*)
3491         target_exec_default="valgrind"
3492         case "$toolchain" in
3493             valgrind-massif)
3494                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3495                 ;;
3496             valgrind-memcheck)
3497                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3498                 ;;
3499         esac
3500     ;;
3501     msvc)
3502         # Check whether the current MSVC version needs the C99 converter.
3503         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3504         # support enough of C99 to build ffmpeg. Default to the new
3505         # behaviour if the regexp was unable to match anything, since this
3506         # successfully parses the version number of existing supported
3507         # versions that require the converter (MSVC 2010 and 2012).
3508         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3509         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3510             cc_default="cl"
3511         else
3512             cc_default="c99wrap cl"
3513         fi
3514         ld_default="$source_path/compat/windows/mslink"
3515         nm_default="dumpbin -symbols"
3516         ar_default="lib"
3517         case "$arch" in
3518         arm*)
3519             as_default="armasm"
3520             ;;
3521         esac
3522         target_os_default="win32"
3523         # Use a relative path for TMPDIR. This makes sure all the
3524         # ffconf temp files are written with a relative path, avoiding
3525         # issues with msys/win32 path conversion for MSVC parameters
3526         # such as -Fo<file> or -out:<file>.
3527         TMPDIR=.
3528     ;;
3529     icl)
3530         cc_default="icl"
3531         ld_default="xilink"
3532         nm_default="dumpbin -symbols"
3533         ar_default="xilib"
3534         target_os_default="win32"
3535         TMPDIR=.
3536     ;;
3537     gcov)
3538         add_cflags  -fprofile-arcs -ftest-coverage
3539         add_ldflags -fprofile-arcs -ftest-coverage
3540     ;;
3541     llvm-cov)
3542         add_cflags -fprofile-arcs -ftest-coverage
3543         add_ldflags --coverage
3544     ;;
3545     hardened)
3546         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3547         add_cflags   -fno-strict-overflow -fstack-protector-all
3548         add_ldflags  -Wl,-z,relro -Wl,-z,now
3549     ;;
3550     ?*)
3551         die "Unknown toolchain $toolchain"
3552     ;;
3553 esac
3554
3555 test -n "$cross_prefix" && enable cross_compile
3556
3557 if enabled cross_compile; then
3558     test -n "$arch" && test -n "$target_os" ||
3559         die "Must specify target arch and OS when cross-compiling"
3560 fi
3561
3562 ar_default="${cross_prefix}${ar_default}"
3563 cc_default="${cross_prefix}${cc_default}"
3564 cxx_default="${cross_prefix}${cxx_default}"
3565 nm_default="${cross_prefix}${nm_default}"
3566 pkg_config_default="${cross_prefix}${pkg_config_default}"
3567 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3568     ranlib_default="${cross_prefix}${ranlib_default} -D"
3569 else
3570     ranlib_default="${cross_prefix}${ranlib_default}"
3571 fi
3572 strip_default="${cross_prefix}${strip_default}"
3573 windres_default="${cross_prefix}${windres_default}"
3574
3575 sysinclude_default="${sysroot}/usr/include"
3576
3577 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3578     target_exec target_os yasmexe
3579 enabled cross_compile || host_cc_default=$cc
3580 set_default host_cc
3581
3582 pkg_config_fail_message=""
3583 if ! $pkg_config --version >/dev/null 2>&1; then
3584     warn "$pkg_config not found, library detection may fail."
3585     pkg_config=false
3586 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3587     pkg_config_fail_message="
3588 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3589 fi
3590
3591 if test $doxygen != $doxygen_default && \
3592   ! $doxygen --version >/dev/null 2>&1; then
3593     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3594 fi
3595
3596 exesuf() {
3597     case $1 in
3598         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3599     esac
3600 }
3601
3602 EXESUF=$(exesuf $target_os)
3603 HOSTEXESUF=$(exesuf $host_os)
3604
3605 # set temporary file name
3606 : ${TMPDIR:=$TEMPDIR}
3607 : ${TMPDIR:=$TMP}
3608 : ${TMPDIR:=/tmp}
3609
3610 if [ -n "$tempprefix" ] ; then
3611     mktemp(){
3612         echo $tempprefix.${HOSTNAME}.${UID}
3613     }
3614 elif ! check_cmd mktemp -u XXXXXX; then
3615     # simple replacement for missing mktemp
3616     # NOT SAFE FOR GENERAL USE
3617     mktemp(){
3618         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3619     }
3620 fi
3621
3622 tmpfile(){
3623     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3624         (set -C; exec > $tmp) 2>/dev/null ||
3625         die "Unable to create temporary file in $TMPDIR."
3626     append TMPFILES $tmp
3627     eval $1=$tmp
3628 }
3629
3630 trap 'rm -f -- $TMPFILES' EXIT
3631
3632 tmpfile TMPASM .asm
3633 tmpfile TMPC   .c
3634 tmpfile TMPCPP .cpp
3635 tmpfile TMPE   $EXESUF
3636 tmpfile TMPH   .h
3637 tmpfile TMPM   .m
3638 tmpfile TMPO   .o
3639 tmpfile TMPS   .S
3640 tmpfile TMPSH  .sh
3641 tmpfile TMPV   .ver
3642
3643 unset -f mktemp
3644
3645 chmod +x $TMPE
3646
3647 # make sure we can execute files in $TMPDIR
3648 cat > $TMPSH 2>> $logfile <<EOF
3649 #! /bin/sh
3650 EOF
3651 chmod +x $TMPSH >> $logfile 2>&1
3652 if ! $TMPSH >> $logfile 2>&1; then
3653     cat <<EOF
3654 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3655 variable to another directory and make sure that it is not mounted noexec.
3656 EOF
3657     die "Sanity test failed."
3658 fi
3659
3660 armasm_flags(){
3661     for flag; do
3662         case $flag in
3663             # Filter out MSVC cl.exe options from cflags that shouldn't
3664             # be passed to gas-preprocessor
3665             -M[TD]*)                                            ;;
3666             *)                  echo $flag                      ;;
3667         esac
3668    done
3669 }
3670
3671 ccc_flags(){
3672     for flag; do
3673         case $flag in
3674             -std=c99)           echo -c99                       ;;
3675             -mcpu=*)            echo -arch ${flag#*=}           ;;
3676             -mieee)             echo -ieee                      ;;
3677             -O*|-fast)          echo $flag                      ;;
3678             -fno-math-errno)    echo -assume nomath_errno       ;;
3679             -g)                 echo -g3                        ;;
3680             -Wall)              echo -msg_enable level2         ;;
3681             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3682             -Wl,*)              echo $flag                      ;;
3683             -f*|-W*)                                            ;;
3684             *)                  echo $flag                      ;;
3685         esac
3686    done
3687 }
3688
3689 cparser_flags(){
3690     for flag; do
3691         case $flag in
3692             -Wno-switch)             echo -Wno-switch-enum ;;
3693             -Wno-format-zero-length) ;;
3694             -Wdisabled-optimization) ;;
3695             -Wno-pointer-sign)       echo -Wno-other ;;
3696             *)                       echo $flag ;;
3697         esac
3698     done
3699 }
3700
3701 msvc_common_flags(){
3702     for flag; do
3703         case $flag in
3704             # In addition to specifying certain flags under the compiler
3705             # specific filters, they must be specified here as well or else the
3706             # generic catch all at the bottom will print the original flag.
3707             -Wall)                ;;
3708             -std=c99)             ;;
3709             # Common flags
3710             -fomit-frame-pointer) ;;
3711             -g)                   echo -Z7 ;;
3712             -fno-math-errno)      ;;
3713             -fno-common)          ;;
3714             -fno-signed-zeros)    ;;
3715             -fPIC)                ;;
3716             -mthumb)              ;;
3717             -march=*)             ;;
3718             -lz)                  echo zlib.lib ;;
3719             -lavifil32)           echo vfw32.lib ;;
3720             -lavicap32)           echo vfw32.lib user32.lib ;;
3721             -lx264)               echo libx264.lib ;;
3722             -l*)                  echo ${flag#-l}.lib ;;
3723             -LARGEADDRESSAWARE)   echo $flag ;;
3724             -L*)                  echo -libpath:${flag#-L} ;;
3725             *)                    echo $flag ;;
3726         esac
3727     done
3728 }
3729
3730 msvc_flags(){
3731     msvc_common_flags "$@"
3732     for flag; do
3733         case $flag in
3734             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3735                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3736                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3737                                        -wd4307 \
3738                                        -wd4273 -wd4554 -wd4701 ;;
3739         esac
3740     done
3741 }
3742
3743 icl_flags(){
3744     msvc_common_flags "$@"
3745     for flag; do
3746         case $flag in
3747             # Despite what Intel's documentation says -Wall, which is supported
3748             # on Windows, does enable remarks so disable them here.
3749             -Wall)                echo $flag -Qdiag-disable:remark ;;
3750             -std=c99)             echo -Qstd=c99 ;;
3751             -flto)                echo -ipo ;;
3752         esac
3753     done
3754 }
3755
3756 icc_flags(){
3757     for flag; do
3758         case $flag in
3759             -flto)                echo -ipo ;;
3760             *)                    echo $flag ;;
3761         esac
3762     done
3763 }
3764
3765 pgi_flags(){
3766     for flag; do
3767         case $flag in
3768             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3769             -fomit-frame-pointer) echo -Mnoframe ;;
3770             -g)                   echo -gopt ;;
3771             *)                    echo $flag ;;
3772         esac
3773     done
3774 }
3775
3776 suncc_flags(){
3777     for flag; do
3778         case $flag in
3779             -march=*|-mcpu=*)
3780                 case "${flag#*=}" in
3781                     native)                   echo -xtarget=native       ;;
3782                     v9|niagara)               echo -xarch=sparc          ;;
3783                     ultrasparc)               echo -xarch=sparcvis       ;;
3784                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3785                     i586|pentium)             echo -xchip=pentium        ;;
3786                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3787                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3788                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3789                     pentium4*)          echo -xtarget=pentium4           ;;
3790                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3791                     *-sse3)             echo -xarch=sse3                 ;;
3792                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3793                     bonnell)                   echo -xarch=ssse3         ;;
3794                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3795                     westmere)                  echo -xtarget=westmere    ;;
3796                     silvermont)                echo -xarch=sse4_2        ;;
3797                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3798                     core-avx*|ivybridge|haswell|broadwell)
3799                                                echo -xarch=avx           ;;
3800                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3801                     btver1)                    echo -xarch=amdsse4a      ;;
3802                     btver2|bdver*)             echo -xarch=avx           ;;
3803                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3804                     k8|opteron|athlon64|athlon-fx)
3805                                                echo -xarch=sse2a         ;;
3806                     athlon*)                   echo -xarch=pentium_proa  ;;
3807                 esac
3808                 ;;
3809             -std=c99)             echo -xc99              ;;
3810             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3811             -fPIC)                echo -KPIC -xcode=pic32 ;;
3812             -W*,*)                echo $flag              ;;
3813             -f*-*|-W*|-mimpure-text)                      ;;
3814             -shared)              echo -G                 ;;
3815             *)                    echo $flag              ;;
3816         esac
3817     done
3818 }
3819
3820 tms470_flags(){
3821     for flag; do
3822         case $flag in
3823             -march=*|-mcpu=*)
3824                 case "${flag#*=}" in
3825                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3826                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3827                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3828                     armv6*|arm11*)          echo -mv=6   ;;
3829                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3830                                             echo -mv=5e  ;;
3831                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3832                 esac
3833                 ;;
3834             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3835             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3836             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3837             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3838             -msoft-float)   echo --float_support=vfplib       ;;
3839             -O[0-3]|-mf=*)  echo $flag                        ;;
3840             -g)             echo -g -mn                       ;;
3841             -pds=*)         echo $flag                        ;;
3842             -D*|-I*)        echo $flag                        ;;
3843             --gcc|--abi=*)  echo $flag                        ;;
3844             -me)            echo $flag                        ;;
3845         esac
3846     done
3847 }
3848
3849 probe_cc(){
3850     pfx=$1
3851     _cc=$2
3852     first=$3
3853
3854     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3855     unset _ld_o _ldflags _ld_lib _ld_path
3856     unset _depflags _DEPCMD _DEPFLAGS
3857     _flags_filter=echo
3858
3859     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3860         true # no-op to avoid reading stdin in following checks
3861     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3862         _type=llvm_gcc
3863         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3864         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3865         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3866         _cflags_speed='-O3'
3867         _cflags_size='-Os'
3868     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3869         _type=gcc
3870         gcc_version=$($_cc --version | head -n1)
3871         gcc_basever=$($_cc -dumpversion)
3872         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3873         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3874         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3875         case $gcc_basever in
3876             2) ;;
3877             2.*) ;;
3878             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3879         esac
3880         if [ "$first" = true ]; then
3881             case $gcc_basever in
3882                 4.2*)
3883                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3884             esac
3885         fi
3886         _cflags_speed='-O3'
3887         _cflags_size='-Os'
3888     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3889         _type=icc
3890         _ident=$($_cc --version | head -n1)
3891         _depflags='-MMD'
3892         _cflags_speed='-O3'
3893         _cflags_size='-Os'
3894         _cflags_noopt='-O1'
3895         _flags_filter=icc_flags
3896     elif $_cc -v 2>&1 | grep -q xlc; then
3897         _type=xlc
3898         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3899         _cflags_speed='-O5'
3900         _cflags_size='-O5 -qcompact'
3901     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3902         _type=ccc
3903         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3904         _DEPFLAGS='-M'
3905         _cflags_speed='-fast'
3906         _cflags_size='-O1'
3907         _flags_filter=ccc_flags
3908     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3909         test -d "$sysroot" || die "No valid sysroot specified."
3910         _type=armcc
3911         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3912         armcc_conf="$PWD/armcc.conf"
3913         $_cc --arm_linux_configure                 \
3914              --arm_linux_config_file="$armcc_conf" \
3915              --configure_sysroot="$sysroot"        \
3916              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3917              die "Error creating armcc configuration file."
3918         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3919         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3920         as_default="${cross_prefix}gcc"
3921         _depflags='-MMD'
3922         _cflags_speed='-O3'
3923         _cflags_size='-Os'
3924     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3925         _type=tms470
3926         _ident=$($_cc -version | head -n1 | tr -s ' ')
3927         _flags='--gcc --abi=eabi -me'
3928         _cc_e='-ppl -fe=$@'
3929         _cc_o='-fe=$@'
3930         _depflags='-ppa -ppd=$(@:.o=.d)'
3931         _cflags_speed='-O3 -mf=5'
3932         _cflags_size='-O3 -mf=2'
3933         _flags_filter=tms470_flags
3934     elif $_cc -v 2>&1 | grep -q clang; then
3935         _type=clang
3936         _ident=$($_cc --version 2>/dev/null | head -n1)
3937         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3938         _cflags_speed='-O3'
3939         _cflags_size='-Os'
3940     elif $_cc -V 2>&1 | grep -q Sun; then
3941         _type=suncc
3942         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3943         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3944         _DEPFLAGS='-xM1 -xc99'
3945         _ldflags='-std=c99'
3946         _cflags_speed='-O5'
3947         _cflags_size='-O5 -xspace'
3948         _flags_filter=suncc_flags
3949     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3950         _type=pathscale
3951         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3952         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3953         _cflags_speed='-O2'
3954         _cflags_size='-Os'
3955         _flags_filter='filter_out -Wdisabled-optimization'
3956     elif $_cc -v 2>&1 | grep -q Open64; then
3957         _type=open64
3958         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3959         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3960         _cflags_speed='-O2'
3961         _cflags_size='-Os'
3962         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3963     elif $_cc -V 2>&1 | grep -q Portland; then
3964         _type=pgi
3965         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3966         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3967         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3968         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3969         _cflags_noopt="-O"
3970         _flags_filter=pgi_flags
3971     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3972         _type=armasm
3973         _ident=$($_cc | head -n1)
3974         # 4509: "This form of conditional instruction is deprecated"
3975         _flags="-nologo -ignore 4509"
3976         _flags_filter=armasm_flags
3977     elif $_cc 2>&1 | grep -q Intel; then
3978         _type=icl
3979         _ident=$($_cc 2>&1 | head -n1)
3980         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3981         # Not only is O3 broken on 13.x+ but it is slower on all previous
3982         # versions (tested) as well.
3983         _cflags_speed="-O2"
3984         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3985         if $_cc 2>&1 | grep -q Linker; then
3986             _ld_o='-out:$@'
3987         else
3988             _ld_o='-Fe$@'
3989         fi
3990         _cc_o='-Fo$@'
3991         _cc_e='-P'
3992         _flags_filter=icl_flags
3993         _ld_lib='lib%.a'
3994         _ld_path='-libpath:'
3995         # -Qdiag-error to make icl error when seeing certain unknown arguments
3996         _flags='-nologo -Qdiag-error:4044,10157'
3997         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3998         # with MSVC which enables it by default.
3999         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4000         disable stripping
4001     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4002         _type=msvc
4003         _ident=$($_cc 2>&1 | head -n1)
4004         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4005         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4006         _cflags_speed="-O2"
4007         _cflags_size="-O1"
4008         if $_cc -nologo- 2>&1 | grep -q Linker; then
4009             _ld_o='-out:$@'
4010         else
4011             _ld_o='-Fe$@'
4012         fi
4013         _cc_o='-Fo$@'
4014         _cc_e='-P -Fi$@'
4015         _flags_filter=msvc_flags
4016         _ld_lib='lib%.a'
4017         _ld_path='-libpath:'
4018         _flags='-nologo'
4019         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4020         disable stripping
4021     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4022         _type=cparser
4023         _ident=$($_cc --version | head -n1)
4024         _depflags='-MMD'
4025         _cflags_speed='-O4'
4026         _cflags_size='-O2'
4027         _flags_filter=cparser_flags
4028     fi
4029
4030     eval ${pfx}_type=\$_type
4031     eval ${pfx}_ident=\$_ident
4032 }
4033
4034 set_ccvars(){
4035     eval ${1}_C=\${_cc_c-\${${1}_C}}
4036     eval ${1}_E=\${_cc_e-\${${1}_E}}
4037     eval ${1}_O=\${_cc_o-\${${1}_O}}
4038
4039     if [ -n "$_depflags" ]; then
4040         eval ${1}_DEPFLAGS=\$_depflags
4041     else
4042         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4043         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4044         eval DEP${1}FLAGS=\$_flags
4045     fi
4046 }
4047
4048 probe_cc cc "$cc" "true"
4049 cflags_filter=$_flags_filter
4050 cflags_speed=$_cflags_speed
4051 cflags_size=$_cflags_size
4052 cflags_noopt=$_cflags_noopt
4053 add_cflags $_flags $_cflags
4054 cc_ldflags=$_ldflags
4055 set_ccvars CC
4056
4057 probe_cc hostcc "$host_cc"
4058 host_cflags_filter=$_flags_filter
4059 add_host_cflags  $_flags $_cflags
4060 set_ccvars HOSTCC
4061
4062 test -n "$cc_type" && enable $cc_type ||
4063     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4064
4065 : ${as_default:=$cc}
4066 : ${objcc_default:=$cc}
4067 : ${dep_cc_default:=$cc}
4068 : ${ld_default:=$cc}
4069 : ${host_ld_default:=$host_cc}
4070 set_default ar as objcc dep_cc ld ln_s host_ld windres
4071
4072 probe_cc as "$as"
4073 asflags_filter=$_flags_filter
4074 add_asflags $_flags $_cflags
4075 set_ccvars AS
4076
4077 probe_cc objcc "$objcc"
4078 objcflags_filter=$_flags_filter
4079 add_objcflags $_flags $_cflags
4080 set_ccvars OBJC
4081
4082 probe_cc ld "$ld"
4083 ldflags_filter=$_flags_filter
4084 add_ldflags $_flags $_ldflags
4085 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4086 LD_O=${_ld_o-$LD_O}
4087 LD_LIB=${_ld_lib-$LD_LIB}
4088 LD_PATH=${_ld_path-$LD_PATH}
4089
4090 probe_cc hostld "$host_ld"
4091 host_ldflags_filter=$_flags_filter
4092 add_host_ldflags $_flags $_ldflags
4093 HOSTLD_O=${_ld_o-$HOSTLD_O}
4094
4095 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4096     probe_cc depcc "$dep_cc"
4097     CCDEP=${_DEPCMD:-$DEPCMD}
4098     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4099     DEPCCFLAGS=$_flags
4100 fi
4101
4102 if $ar 2>&1 | grep -q Microsoft; then
4103     arflags="-nologo"
4104     ar_o='-out:$@'
4105 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4106     arflags="rq"
4107     ar_o='$@'
4108 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4109     arflags='-Xany -r -c'
4110     ar_o='$@'
4111 elif $ar 2>&1 | grep -q "\[D\] "; then
4112     arflags="rcD"
4113     ar_o='$@'
4114 else
4115     arflags="rc"
4116     ar_o='$@'
4117 fi
4118
4119 add_cflags $extra_cflags
4120 add_cxxflags $extra_cxxflags
4121 add_objcflags $extra_objcflags
4122 add_asflags $extra_cflags
4123
4124 if test -n "$sysroot"; then
4125     case "$cc_type" in
4126         gcc|llvm_gcc|clang)
4127             add_cppflags --sysroot="$sysroot"
4128             add_ldflags --sysroot="$sysroot"
4129 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4130             add_cppflags -isysroot "$sysroot"
4131             add_ldflags -isysroot "$sysroot"
4132         ;;
4133         tms470)
4134             add_cppflags -I"$sysinclude"
4135             add_ldflags  --sysroot="$sysroot"
4136         ;;
4137     esac
4138 fi
4139
4140 if test "$cpu" = host; then
4141     enabled cross_compile &&
4142         die "--cpu=host makes no sense when cross-compiling."
4143
4144     case "$cc_type" in
4145         gcc|llvm_gcc)
4146             check_native(){
4147                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4148                 sed -n "/cc1.*$1=/{
4149                             s/.*$1=\\([^ ]*\\).*/\\1/
4150                             p
4151                             q
4152                         }" $TMPE
4153             }
4154             cpu=$(check_native -march || check_native -mcpu)
4155         ;;
4156         clang)
4157             check_native(){
4158                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4159                 sed -n "/cc1.*-target-cpu /{
4160                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4161                             p
4162                             q
4163                         }" $TMPE
4164             }
4165             cpu=$(check_native -march)
4166         ;;
4167     esac
4168
4169     test "${cpu:-host}" = host &&
4170         die "--cpu=host not supported with compiler $cc"
4171 fi
4172
4173 # Deal with common $arch aliases
4174 case "$arch" in
4175     aarch64|arm64)
4176         arch="aarch64"
4177     ;;
4178     arm*|iPad*|iPhone*)
4179         arch="arm"
4180     ;;
4181     mips*|IP*)
4182         case "$arch" in
4183         *el)
4184             add_cppflags -EL
4185             add_ldflags -EL
4186         ;;
4187         *eb)
4188             add_cppflags -EB
4189             add_ldflags -EB
4190         ;;
4191         esac
4192         arch="mips"
4193     ;;
4194     parisc*|hppa*)
4195         arch="parisc"
4196     ;;
4197     "Power Macintosh"|ppc*|powerpc*)
4198         arch="ppc"
4199     ;;
4200     s390|s390x)
4201         arch="s390"
4202     ;;
4203     sh4|sh)
4204         arch="sh4"
4205     ;;
4206     sun4u|sparc*)
4207         arch="sparc"
4208     ;;
4209     tilegx|tile-gx)
4210         arch="tilegx"
4211     ;;
4212     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4213         arch="x86"
4214     ;;
4215 esac
4216
4217 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4218 enable $arch
4219
4220 # Add processor-specific flags
4221 if enabled aarch64; then
4222
4223     case $cpu in
4224         armv*)
4225             cpuflags="-march=$cpu"
4226         ;;
4227         *)
4228             cpuflags="-mcpu=$cpu"
4229         ;;
4230     esac
4231
4232 elif enabled alpha; then
4233
4234     cpuflags="-mcpu=$cpu"
4235
4236 elif enabled arm; then
4237
4238     check_arm_arch() {
4239         check_cpp_condition stddef.h \
4240             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4241             $cpuflags
4242     }
4243
4244     probe_arm_arch() {
4245         if   check_arm_arch 4;        then echo armv4
4246         elif check_arm_arch 4T;       then echo armv4t
4247         elif check_arm_arch 5;        then echo armv5
4248         elif check_arm_arch 5E;       then echo armv5e
4249         elif check_arm_arch 5T;       then echo armv5t
4250         elif check_arm_arch 5TE;      then echo armv5te
4251         elif check_arm_arch 5TEJ;     then echo armv5te
4252         elif check_arm_arch 6;        then echo armv6
4253         elif check_arm_arch 6J;       then echo armv6j
4254         elif check_arm_arch 6K;       then echo armv6k
4255         elif check_arm_arch 6Z;       then echo armv6z
4256         elif check_arm_arch 6ZK;      then echo armv6zk
4257         elif check_arm_arch 6T2;      then echo armv6t2
4258         elif check_arm_arch 7;        then echo armv7
4259         elif check_arm_arch 7A  7_A;  then echo armv7-a
4260         elif check_arm_arch 7S;       then echo armv7-a
4261         elif check_arm_arch 7R  7_R;  then echo armv7-r
4262         elif check_arm_arch 7M  7_M;  then echo armv7-m
4263         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4264         elif check_arm_arch 8A  8_A;  then echo armv8-a
4265         fi
4266     }
4267
4268     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4269
4270     case $cpu in
4271         armv*)
4272             cpuflags="-march=$cpu"
4273             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4274         ;;
4275         *)
4276             cpuflags="-mcpu=$cpu"
4277             case $cpu in
4278                 cortex-a*)                               subarch=armv7a  ;;
4279                 cortex-r*)                               subarch=armv7r  ;;
4280                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4281                 arm11*)                                  subarch=armv6   ;;
4282                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4283                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4284                 *)                             subarch=$(probe_arm_arch) ;;
4285             esac
4286         ;;
4287     esac
4288
4289     case "$subarch" in
4290         armv5t*)    enable fast_clz                ;;
4291         armv[6-8]*)
4292             enable fast_clz
4293             disabled fast_unaligned || enable fast_unaligned
4294             ;;
4295     esac
4296
4297 elif enabled avr32; then
4298
4299     case $cpu in
4300         ap7[02]0[0-2])
4301             subarch="avr32_ap"
4302             cpuflags="-mpart=$cpu"
4303         ;;
4304         ap)
4305             subarch="avr32_ap"
4306             cpuflags="-march=$cpu"
4307         ;;
4308         uc3[ab]*)
4309             subarch="avr32_uc"
4310             cpuflags="-mcpu=$cpu"
4311         ;;
4312         uc)
4313             subarch="avr32_uc"
4314             cpuflags="-march=$cpu"
4315         ;;
4316     esac
4317
4318 elif enabled bfin; then
4319
4320     cpuflags="-mcpu=$cpu"
4321
4322 elif enabled mips; then
4323
4324     cpuflags="-march=$cpu"
4325
4326     if [ "$cpu" != "generic" ]; then
4327         disable mips32r2
4328         disable mips32r5
4329         disable mips64r2
4330         disable mips32r6
4331         disable mips64r6
4332         disable loongson2
4333         disable loongson3
4334
4335         case $cpu in
4336             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4337                 enable mips32r2
4338                 disable msa
4339             ;;
4340             p5600|i6400)
4341                 disable mipsdsp
4342                 disable mipsdspr2
4343             ;;
4344             loongson*)
4345                 enable loongson2
4346                 enable loongson3
4347                 enable local_aligned_8 local_aligned_16 local_aligned_32
4348                 enable simd_align_16
4349                 enable fast_64bit
4350                 enable fast_clz
4351                 enable fast_cmov
4352                 enable fast_unaligned
4353                 disable aligned_stack
4354                 case $cpu in
4355                     loongson3*)
4356                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4357                     ;;
4358                     loongson2e)
4359                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4360                     ;;
4361                     loongson2f)
4362                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4363                     ;;
4364                 esac
4365             ;;
4366             *)
4367                 # Unknown CPU. Disable everything.
4368                 warn "unknown CPU. Disabling all MIPS optimizations."
4369                 disable mipsfpu
4370                 disable mipsdsp
4371                 disable mipsdspr2
4372                 disable msa
4373                 disable mmi
4374             ;;
4375         esac
4376
4377         case $cpu in
4378             24kc)
4379                 disable mipsfpu
4380                 disable mipsdsp
4381                 disable mipsdspr2
4382             ;;
4383             24kf*)
4384                 disable mipsdsp
4385                 disable mipsdspr2
4386             ;;
4387             24kec|34kc|1004kc)
4388                 disable mipsfpu
4389                 disable mipsdspr2
4390             ;;
4391             24kef*|34kf*|1004kf*)
4392                 disable mipsdspr2
4393             ;;
4394             74kc)
4395                 disable mipsfpu
4396             ;;
4397             p5600)
4398                 enable mips32r5
4399                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4400             ;;
4401             i6400)
4402                 enable mips64r6
4403                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4404             ;;
4405         esac
4406     else
4407         # We do not disable anything. Is up to the user to disable the unwanted features.
4408         warn 'generic cpu selected'
4409     fi
4410
4411 elif enabled ppc; then
4412
4413     disable ldbrx
4414
4415     case $(tolower $cpu) in
4416         601|ppc601|powerpc601)
4417             cpuflags="-mcpu=601"
4418             disable altivec
4419         ;;
4420         603*|ppc603*|powerpc603*)
4421             cpuflags="-mcpu=603"
4422             disable altivec
4423         ;;
4424         604*|ppc604*|powerpc604*)
4425             cpuflags="-mcpu=604"
4426             disable altivec
4427         ;;
4428         g3|75*|ppc75*|powerpc75*)
4429             cpuflags="-mcpu=750"
4430             disable altivec
4431         ;;
4432         g4|745*|ppc745*|powerpc745*)
4433             cpuflags="-mcpu=7450"
4434             disable vsx
4435         ;;
4436         74*|ppc74*|powerpc74*)
4437             cpuflags="-mcpu=7400"
4438             disable vsx
4439         ;;
4440         g5|970|ppc970|powerpc970)
4441             cpuflags="-mcpu=970"
4442             disable vsx
4443         ;;
4444         power[3-6]*)
4445             cpuflags="-mcpu=$cpu"
4446             disable vsx
4447         ;;
4448         power[7-8]*)
4449             cpuflags="-mcpu=$cpu"
4450         ;;
4451         cell)
4452             cpuflags="-mcpu=cell"
4453             enable ldbrx
4454             disable vsx
4455         ;;
4456         e500mc)
4457             cpuflags="-mcpu=e500mc"
4458             disable altivec
4459         ;;
4460         e500v2)
4461             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4462             disable altivec
4463             disable dcbzl
4464         ;;
4465         e500)
4466             cpuflags="-mcpu=8540 -mhard-float"
4467             disable altivec
4468             disable dcbzl
4469         ;;
4470     esac
4471
4472 elif enabled sparc; then
4473
4474     case $cpu in
4475         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4476             cpuflags="-mcpu=$cpu"
4477         ;;
4478         ultrasparc*|niagara[234])
4479             cpuflags="-mcpu=$cpu"
4480         ;;
4481     esac
4482
4483 elif enabled x86; then
4484
4485     case $cpu in
4486         i[345]86|pentium)
4487             cpuflags="-march=$cpu"
4488             disable i686
4489             disable mmx
4490         ;;
4491         # targets that do NOT support nopl and conditional mov (cmov)
4492         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4493             cpuflags="-march=$cpu"
4494             disable i686
4495         ;;
4496         # targets that do support nopl and conditional mov (cmov)
4497         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4498         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4499             cpuflags="-march=$cpu"
4500             enable i686
4501             enable fast_cmov
4502         ;;
4503         # targets that do support conditional mov but on which it's slow
4504         pentium4|pentium4m|prescott|nocona)
4505             cpuflags="-march=$cpu"
4506             enable i686
4507             disable fast_cmov
4508         ;;
4509     esac
4510
4511 fi
4512
4513 if [ "$cpu" != generic ]; then
4514     add_cflags  $cpuflags
4515     add_asflags $cpuflags
4516     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4517 fi
4518
4519 # compiler sanity check
4520 check_exec <<EOF
4521 int main(void){ return 0; }
4522 EOF
4523 if test "$?" != 0; then
4524     echo "$cc is unable to create an executable file."
4525     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4526         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4527         echo "Only do this if you know what cross compiling means."
4528     fi
4529     die "C compiler test failed."
4530 fi
4531
4532 add_cppflags -D_ISOC99_SOURCE
4533 add_cxxflags -D__STDC_CONSTANT_MACROS
4534 add_cxxflags -std=c++11
4535 check_cflags -std=c99
4536 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4537 #include <stdlib.h>
4538 EOF
4539 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4540 #include <stdlib.h>
4541 EOF
4542
4543 add_host_cppflags -D_ISOC99_SOURCE
4544 check_host_cflags -std=c99
4545 check_host_cflags -Wall
4546 check_host_cflags -O3
4547
4548 check_64bit(){
4549     arch32=$1
4550     arch64=$2
4551     expr=$3
4552     check_code cc "" "int test[2*($expr) - 1]" &&
4553         subarch=$arch64 || subarch=$arch32
4554 }
4555
4556 case "$arch" in
4557     aarch64|alpha|ia64)
4558         spic=$shared
4559     ;;
4560     mips)
4561         check_64bit mips mips64 '_MIPS_SIM > 1'
4562         spic=$shared
4563     ;;
4564     parisc)
4565         check_64bit parisc parisc64 'sizeof(void *) > 4'
4566         spic=$shared
4567     ;;
4568     ppc)
4569         check_64bit ppc ppc64 'sizeof(void *) > 4'
4570         spic=$shared
4571     ;;
4572     s390)
4573         check_64bit s390 s390x 'sizeof(void *) > 4'
4574         spic=$shared
4575     ;;
4576     sparc)
4577         check_64bit sparc sparc64 'sizeof(void *) > 4'
4578         spic=$shared
4579     ;;
4580     x86)
4581         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4582         # Treat x32 as x64 for now. Note it also needs spic=$shared
4583         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4584             subarch=x86_64
4585         if test "$subarch" = "x86_64"; then
4586             spic=$shared
4587         fi
4588     ;;
4589     ppc)
4590         check_cc <<EOF && subarch="ppc64"
4591         int test[(int)sizeof(char*) - 7];
4592 EOF
4593     ;;
4594 esac
4595
4596 enable $subarch
4597 enabled spic && enable_weak pic
4598
4599 # OS specific
4600 case $target_os in
4601     aix)
4602         SHFLAGS=-shared
4603         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4604         enabled shared && add_ldflags -Wl,-brtl
4605         ;;
4606     android)
4607         disable symver
4608         enable section_data_rel_ro
4609         SLIB_INSTALL_NAME='$(SLIBNAME)'
4610         SLIB_INSTALL_LINKS=
4611         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4612         ;;
4613     haiku)
4614         prefix_default="/boot/common"
4615         network_extralibs="-lnetwork"
4616         host_libs=
4617         ;;
4618     sunos)
4619         SHFLAGS='-shared -Wl,-h,$$(@F)'
4620         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4621         network_extralibs="-lsocket -lnsl"
4622         add_cppflags -D__EXTENSIONS__
4623         # When using suncc to build, the Solaris linker will mark
4624         # an executable with each instruction set encountered by
4625         # the Solaris assembler.  As our libraries contain their own
4626         # guards for processor-specific code, instead suppress
4627         # generation of the HWCAPS ELF section on Solaris x86 only.
4628         enabled_all suncc x86 &&
4629             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4630             add_ldflags -Wl,-M,mapfile
4631         nm_default='nm -P -g'
4632         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4633         ;;
4634     netbsd)
4635         disable symver
4636         oss_indev_extralibs="-lossaudio"
4637         oss_outdev_extralibs="-lossaudio"
4638         enabled gcc || check_ldflags -Wl,-zmuldefs
4639         ;;
4640     openbsd|bitrig)
4641         disable symver
4642         SHFLAGS='-shared'
4643         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4644         SLIB_INSTALL_LINKS=
4645         oss_indev_extralibs="-lossaudio"
4646         oss_outdev_extralibs="-lossaudio"
4647         ;;
4648     dragonfly)
4649         disable symver
4650         ;;
4651     freebsd)
4652         ;;
4653     bsd/os)
4654         add_extralibs -lpoll -lgnugetopt
4655         strip="strip -d"
4656         ;;
4657     darwin)
4658         enabled ppc && add_asflags -force_cpusubtype_ALL
4659         install_name_dir_default='$(SHLIBDIR)'
4660         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4661         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4662         strip="${strip} -x"
4663         add_ldflags -Wl,-dynamic,-search_paths_first
4664         SLIBSUF=".dylib"
4665         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4666         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4667         objformat="macho"
4668         enabled x86_64 && objformat="macho64"
4669         enabled_any pic shared x86_64 ||
4670             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4671         check_header dispatch/dispatch.h &&
4672             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4673         ;;
4674     msys*)
4675         die "Native MSYS builds are discouraged, please use the MINGW environment."
4676         ;;
4677     mingw32*|mingw64*)
4678         if test $target_os = "mingw32ce"; then
4679             disable network
4680         else
4681             target_os=mingw32
4682         fi
4683         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4684         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4685         LIBTARGET=i386
4686         if enabled x86_64; then
4687             LIBTARGET="i386:x86-64"
4688         elif enabled arm; then
4689             LIBTARGET=arm-wince
4690         fi
4691         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4692         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4693         shlibdir_default="$bindir_default"
4694         SLIBPREF=""
4695         SLIBSUF=".dll"
4696         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4697         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4698         dlltool="${cross_prefix}dlltool"
4699         if check_cmd lib.exe -list; then
4700             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4701             if enabled x86_64; then
4702                 LIBTARGET=x64
4703             fi
4704         elif check_cmd $dlltool --version; then
4705             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4706         fi
4707         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4708         SLIB_INSTALL_LINKS=
4709         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4710         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4711         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4712         objformat="win32"
4713         ranlib=:
4714         enable dos_paths
4715         check_ldflags -Wl,--nxcompat,--dynamicbase
4716         # Lets work around some stupidity in binutils.
4717         # ld will strip relocations from executables even though we need them
4718         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4719         # however ld then forgets what the entry point should be (oops) so we
4720         # have to manually (re)set it.
4721         if enabled x86_32; then
4722             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4723         elif enabled x86_64; then
4724             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4725             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4726             # Set image base >4GB for extra entropy with HEASLR
4727             add_ldexeflags -Wl,--image-base,0x140000000
4728             append SHFLAGS -Wl,--image-base,0x180000000
4729         fi
4730         ;;
4731     win32|win64)
4732         disable symver
4733         if enabled shared; then
4734             # Link to the import library instead of the normal static library
4735             # for shared libs.
4736             LD_LIB='%.lib'
4737             # Cannot build both shared and static libs with MSVC or icl.
4738             disable static
4739         fi
4740         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4741         shlibdir_default="$bindir_default"
4742         SLIBPREF=""
4743         SLIBSUF=".dll"
4744         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4745         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4746         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4747         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4748         SLIB_INSTALL_LINKS=
4749         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4750         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4751         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4752         objformat="win32"
4753         ranlib=:
4754         enable dos_paths
4755         ;;
4756     cygwin*)
4757         target_os=cygwin
4758         shlibdir_default="$bindir_default"
4759         SLIBPREF="cyg"
4760         SLIBSUF=".dll"
4761         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4762         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4763         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4764         SLIB_INSTALL_LINKS=
4765         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4766         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4767         objformat="win32"
4768         enable dos_paths
4769         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4770         ;;
4771     *-dos|freedos|opendos)
4772         network_extralibs="-lsocket"
4773         objformat="coff"
4774         enable dos_paths
4775         add_cppflags -U__STRICT_ANSI__
4776         ;;
4777     linux)
4778         enable dv1394
4779         enable section_data_rel_ro
4780         ;;
4781     irix*)
4782         target_os=irix
4783         ranlib="echo ignoring ranlib"
4784         ;;
4785     os/2*)
4786         strip="lxlite -CS"
4787         objformat="aout"
4788         add_cppflags -D_GNU_SOURCE
4789         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4790         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4791         LIBSUF="_s.a"
4792         SLIBPREF=""
4793         SLIBSUF=".dll"
4794         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4795         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4796         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4797             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4798             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4799             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4800             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4801         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4802             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4803         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4804         SLIB_INSTALL_LINKS=
4805         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4806         enable dos_paths
4807         enable_weak os2threads
4808         ;;
4809     gnu/kfreebsd)
4810         add_cppflags -D_BSD_SOURCE
4811         ;;
4812     gnu)
4813         ;;
4814     qnx)
4815         add_cppflags -D_QNX_SOURCE
4816         network_extralibs="-lsocket"
4817         ;;
4818     symbian)
4819         SLIBSUF=".dll"
4820         enable dos_paths
4821         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4822         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4823         add_ldflags -Wl,--target1-abs,--no-undefined \
4824                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4825                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4826         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4827                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4828                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4829         ;;
4830     osf1)
4831         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4832         ;;
4833     minix)
4834         ;;
4835     plan9)
4836         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4837                      -D_REENTRANT_SOURCE        \
4838                      -D_RESEARCH_SOURCE         \
4839                      -DFD_SETSIZE=96            \
4840                      -DHAVE_SOCK_OPTS
4841         add_compat strtod.o strtod=avpriv_strtod
4842         network_extralibs='-lbsd'
4843         exeobjs=compat/plan9/main.o
4844         disable ffserver
4845         cp_f='cp'
4846         ;;
4847     none)
4848         ;;
4849     *)
4850         die "Unknown OS '$target_os'."
4851         ;;
4852 esac
4853
4854 # test if creating links works
4855 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4856 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4857 mkdir "$link_dest"
4858 $ln_s "$link_dest" "$link_name"
4859 touch "$link_dest/test_file"
4860 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4861     # create link to source path
4862     [ -e src ] && rm src
4863     $ln_s "$source_path" src
4864     source_link=src
4865 else
4866     # creating directory links doesn't work
4867     # fall back to using the full source path
4868     source_link="$source_path"
4869 fi
4870 # cleanup
4871 rm -r "$link_dest"
4872 rm -r "$link_name"
4873
4874 # determine libc flavour
4875
4876 probe_libc(){
4877     pfx=$1
4878     pfx_no_=${pfx%_}
4879     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4880     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4881         eval ${pfx}libc_type=uclibc
4882         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4883     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4884         eval ${pfx}libc_type=glibc
4885         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4886     # MinGW headers can be installed on Cygwin, so check for newlib first.
4887     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4888         eval ${pfx}libc_type=newlib
4889         add_${pfx}cppflags -U__STRICT_ANSI__
4890     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4891     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4892         eval ${pfx}libc_type=mingw64
4893         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4894             add_compat msvcrt/snprintf.o
4895             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4896         fi
4897         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4898         eval test \$${pfx_no_}cc_type = "gcc" &&
4899             add_${pfx}cppflags -D__printf__=__gnu_printf__
4900     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4901          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4902         eval ${pfx}libc_type=mingw32
4903         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4904             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4905             die "ERROR: MinGW32 runtime version must be >= 3.15."
4906         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4907         eval test \$${pfx_no_}cc_type = "gcc" &&
4908             add_${pfx}cppflags -D__printf__=__gnu_printf__
4909     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4910         eval ${pfx}libc_type=msvcrt
4911         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4912             if [ "$pfx" = host_ ]; then
4913                 add_host_cppflags -Dsnprintf=_snprintf
4914             else
4915                 add_compat strtod.o strtod=avpriv_strtod
4916                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4917                                              _snprintf=avpriv_snprintf  \
4918                                              vsnprintf=avpriv_vsnprintf
4919             fi
4920         fi
4921         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4922         # 0x601 by default unless something else is set by the user.
4923         # This can easily lead to us detecting functions only present
4924         # in such new versions and producing binaries requiring windows 7.0.
4925         # Therefore explicitly set the default to XP unless the user has
4926         # set something else on the command line.
4927         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4928         # family. For these cases, configure is free to use any functions
4929         # found in the SDK headers by default. (Alternatively, we could force
4930         # _WIN32_WINNT to 0x0602 in that case.)
4931         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4932             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4933 #ifdef WINAPI_FAMILY
4934 #include <winapifamily.h>
4935 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4936 #error not desktop
4937 #endif
4938 #endif
4939 EOF
4940     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4941         eval ${pfx}libc_type=klibc
4942     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4943         eval ${pfx}libc_type=bionic
4944     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4945         eval ${pfx}libc_type=solaris
4946         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4947     fi
4948     check_${pfx}cc <<EOF
4949 #include <time.h>
4950 void *v = localtime_r;
4951 EOF
4952 test "$?" != 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
4953 #include <time.h>
4954 void *v = localtime_r;
4955 EOF
4956
4957 }
4958
4959 probe_libc
4960 test -n "$libc_type" && enable libc_$libc_type
4961 probe_libc host_
4962 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4963
4964 case $libc_type in
4965     bionic)
4966         add_compat strtod.o strtod=avpriv_strtod
4967         ;;
4968 esac
4969
4970 # hacks for compiler/libc/os combinations
4971
4972 if enabled_all tms470 libc_glibc; then
4973     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4974     add_cppflags -D__USER_LABEL_PREFIX__=
4975     add_cppflags -D__builtin_memset=memset
4976     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4977     add_cflags   -pds=48    # incompatible redefinition of macro
4978 fi
4979
4980 if enabled_all ccc libc_glibc; then
4981     add_ldflags -Wl,-z,now  # calls to libots crash without this
4982 fi
4983
4984 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4985     add_cppflags '-I\$(SRC_PATH)/compat/float'
4986
4987 esc(){
4988     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4989 }
4990
4991 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4992
4993 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4994
4995 set_default libdir
4996 : ${shlibdir_default:="$libdir"}
4997 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4998
4999 set_default $PATHS_LIST
5000 set_default nm
5001
5002 # we need to build at least one lib type
5003 if ! enabled_any static shared; then
5004     cat <<EOF
5005 At least one library type must be built.
5006 Specify --enable-static to build the static libraries or --enable-shared to
5007 build the shared libraries as well. To only build the shared libraries specify
5008 --disable-static in addition to --enable-shared.
5009 EOF
5010     exit 1
5011 fi
5012
5013 die_license_disabled() {
5014     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5015 }
5016
5017 die_license_disabled_gpl() {
5018     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5019 }
5020
5021 die_license_disabled gpl frei0r
5022 die_license_disabled gpl libcdio
5023 die_license_disabled gpl librubberband
5024 die_license_disabled gpl libsmbclient
5025 die_license_disabled gpl libvidstab
5026 die_license_disabled gpl libx264
5027 die_license_disabled gpl libx265
5028 die_license_disabled gpl libxavs
5029 die_license_disabled gpl libxvid
5030 die_license_disabled gpl x11grab
5031
5032 die_license_disabled nonfree cuda
5033 die_license_disabled nonfree cuvid
5034 die_license_disabled nonfree libfaac
5035 die_license_disabled nonfree libnpp
5036 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5037 enabled gpl && die_license_disabled_gpl nonfree openssl
5038
5039 die_license_disabled version3 gmp
5040 die_license_disabled version3 libopencore_amrnb
5041 die_license_disabled version3 libopencore_amrwb
5042 die_license_disabled version3 libsmbclient
5043 die_license_disabled version3 libvo_amrwbenc
5044
5045 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5046
5047 disabled optimizations || check_cflags -fomit-frame-pointer
5048
5049 enable_weak_pic() {
5050     disabled pic && return
5051     enable pic
5052     add_cppflags -DPIC
5053     case "$target_os" in
5054     mingw*|cygwin*)
5055         ;;
5056     *)
5057         add_cflags -fPIC
5058         ;;
5059     esac
5060     add_asflags  -fPIC
5061 }
5062
5063 enabled pic && enable_weak_pic
5064
5065 check_cc <<EOF || die "Symbol mangling check failed."
5066 int ff_extern;
5067 EOF
5068 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5069 extern_prefix=${sym%%ff_extern*}
5070
5071 check_cc <<EOF && enable_weak inline_asm
5072 void foo(void) { __asm__ volatile ("" ::); }
5073 EOF
5074
5075 _restrict=
5076 for restrict_keyword in restrict __restrict__ __restrict; do
5077     check_cc <<EOF && _restrict=$restrict_keyword && break
5078 void foo(char * $restrict_keyword p);
5079 EOF
5080 done
5081
5082 check_cc <<EOF && enable pragma_deprecated
5083 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5084 EOF
5085
5086 check_cc <<EOF && enable attribute_packed
5087 struct { int x; } __attribute__((packed)) x;
5088 EOF
5089
5090 check_cc <<EOF && enable attribute_may_alias
5091 union { int x; } __attribute__((may_alias)) x;
5092 EOF
5093
5094 check_cc <<EOF || die "endian test failed"
5095 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5096 EOF
5097 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5098
5099 if ! enabled ppc64 || enabled bigendian; then
5100     disable vsx
5101 fi
5102
5103 check_gas() {
5104     log "check_gas using '$as' as AS"
5105     # :vararg is used on aarch64, arm and ppc altivec
5106     check_as <<EOF || return 1
5107 .macro m n, y:vararg=0
5108 \n: .int \y
5109 .endm
5110 m x
5111 EOF
5112     # .altmacro is only used in arm asm
5113     ! enabled arm || check_as <<EOF || return 1
5114 .altmacro
5115 EOF
5116     enable gnu_as
5117     return 0
5118 }
5119
5120 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5121     nogas=:
5122     enabled_any arm aarch64 && nogas=die
5123     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5124     as_noop=-v
5125
5126     case $as_type in
5127         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5128         gcc)  gaspp_as_type=gas ;;
5129         *)    gaspp_as_type=$as_type ;;
5130     esac
5131
5132     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5133
5134     test "${as#*gas-preprocessor.pl}" != "$as" ||
5135     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5136         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5137
5138     if ! check_gas ; then
5139         as=${gas:=$as}
5140         check_gas || \
5141             $nogas "GNU assembler not found, install/update gas-preprocessor"
5142     fi
5143
5144     check_as <<EOF && enable as_func
5145 .func test
5146 .endfunc
5147 EOF
5148 fi
5149
5150 check_inline_asm inline_asm_labels '"1:\n"'
5151
5152 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5153
5154 if enabled aarch64; then
5155     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5156     # internal assembler in clang 3.3 does not support this instruction
5157     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5158     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5159
5160     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5161
5162 elif enabled alpha; then
5163
5164     check_cflags -mieee
5165
5166 elif enabled arm; then
5167
5168     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5169
5170     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5171 float func(float a, float b){ return a+b; }
5172 EOF
5173
5174     enabled thumb && check_cflags -mthumb || check_cflags -marm
5175
5176     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5177         enable vfp_args
5178     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5179         enable vfp_args
5180     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5181         case "${cross_prefix:-$cc}" in
5182             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5183             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5184 __asm__ (".eabi_attribute 28, 1");
5185 int main(void) { return 0; }
5186 EOF
5187         esac
5188         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5189     fi
5190
5191     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5192     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5193     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5194     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5195     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5196     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5197     enabled setend  && check_insn setend  'setend be'
5198
5199     [ $target_os = linux ] || [ $target_os = android ] ||
5200         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5201             $ARCH_EXT_LIST_ARM
5202
5203     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5204
5205     check_as <<EOF && enable as_dn_directive
5206 ra .dn d0.i16
5207 .unreq ra
5208 EOF
5209
5210     # llvm's integrated assembler supports .object_arch from llvm 3.5
5211     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5212 .object_arch armv4
5213 EOF
5214
5215     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5216
5217 elif enabled mips; then
5218
5219     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5220     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5221     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5222
5223     # Enable minimum ISA based on selected options
5224     if enabled mips64; then
5225         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5226         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5227         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5228     else
5229         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5230         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5231         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5232         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5233     fi
5234
5235     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5236     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5237     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5238     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5239     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5240
5241 elif enabled parisc; then
5242
5243     if enabled gcc; then
5244         case $($cc -dumpversion) in
5245             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5246         esac
5247     fi
5248
5249 elif enabled ppc; then
5250
5251     enable local_aligned_8 local_aligned_16 local_aligned_32
5252
5253     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5254     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5255     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5256     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5257
5258     # AltiVec flags: The FSF version of GCC differs from the Apple version
5259     if enabled altivec; then
5260         check_cflags -maltivec -mabi=altivec &&
5261         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5262         check_cflags -faltivec
5263
5264         # check if our compiler supports Motorola AltiVec C API
5265         check_cc <<EOF || disable altivec
5266 $inc_altivec_h
5267 int main(void) {
5268     vector signed int v1 = (vector signed int) { 0 };
5269     vector signed int v2 = (vector signed int) { 1 };
5270     v1 = vec_add(v1, v2);
5271     return 0;
5272 }
5273 EOF
5274
5275         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5276     fi
5277
5278     if enabled vsx; then
5279         check_cflags -mvsx &&
5280         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5281     fi
5282
5283     if enabled power8; then
5284         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5285     fi
5286
5287 elif enabled x86; then
5288
5289     check_builtin rdtsc    intrin.h   "__rdtsc()"
5290     check_builtin mm_empty mmintrin.h "_mm_empty()"
5291
5292     enable local_aligned_8 local_aligned_16 local_aligned_32
5293
5294     # check whether EBP is available on x86
5295     # As 'i' is stored on the stack, this program will crash
5296     # if the base pointer is used to access it because the
5297     # base pointer is cleared in the inline assembly code.
5298     check_exec_crash <<EOF && enable ebp_available
5299 volatile int i=0;
5300 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5301 return i;
5302 EOF
5303
5304     # check whether EBX is available on x86
5305     check_inline_asm ebx_available '""::"b"(0)' &&
5306         check_inline_asm ebx_available '"":::"%ebx"'
5307
5308     # check whether xmm clobbers are supported
5309     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5310
5311     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5312         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5313
5314     # check whether binutils is new enough to compile SSSE3/MMXEXT
5315     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5316     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5317
5318     if ! disabled_any asm mmx yasm; then
5319         if check_cmd $yasmexe --version; then
5320             enabled x86_64 && yasm_extra="-m amd64"
5321             yasm_debug="-g dwarf2"
5322         elif check_cmd nasm -v; then
5323             yasmexe=nasm
5324             yasm_debug="-g -F dwarf"
5325             if enabled x86_64; then
5326                 case "$objformat" in
5327                     elf)   objformat=elf64 ;;
5328                     win32) objformat=win64 ;;
5329                 esac
5330             fi
5331         fi
5332
5333         YASMFLAGS="-f $objformat $yasm_extra"
5334         enabled pic               && append YASMFLAGS "-DPIC"
5335         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5336         case "$objformat" in
5337             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5338         esac
5339
5340         check_yasm "movbe ecx, [5]" && enable yasm ||
5341             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5342         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5343         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5344         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5345         check_yasm "CPU amdnop" || disable cpunop
5346     fi
5347
5348     case "$cpu" in
5349         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5350             disable fast_clz
5351         ;;
5352     esac
5353
5354 fi
5355
5356 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5357
5358 check_ldflags -Wl,--as-needed
5359 check_ldflags -Wl,-z,noexecstack
5360
5361 if check_func dlopen; then
5362     ldl=
5363 elif check_func dlopen -ldl; then
5364     ldl=-ldl
5365 fi
5366
5367 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5368 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5369 frei0r_filter_extralibs='$ldl'
5370 frei0r_src_filter_extralibs='$ldl'
5371 ladspa_filter_extralibs='$ldl'
5372 nvenc_encoder_extralibs='$ldl'
5373 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5374 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5375
5376 if ! disabled network; then
5377     check_func getaddrinfo $network_extralibs
5378     check_func inet_aton $network_extralibs
5379
5380     check_type netdb.h "struct addrinfo"
5381     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5382     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5383     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5384     check_type poll.h "struct pollfd"
5385     check_type netinet/sctp.h "struct sctp_event_subscribe"
5386     check_struct "sys/socket.h" "struct msghdr" msg_flags
5387     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5388     check_type netinet/in.h "struct sockaddr_in6"
5389     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5390     check_type "sys/types.h sys/socket.h" socklen_t
5391
5392     # Prefer arpa/inet.h over winsock2
5393     if check_header arpa/inet.h ; then
5394         check_func closesocket
5395     elif check_header winsock2.h ; then
5396         check_func_headers winsock2.h closesocket -lws2 &&
5397             network_extralibs="-lws2" ||
5398         { check_func_headers winsock2.h closesocket -lws2_32 &&
5399             network_extralibs="-lws2_32"; } || disable winsock2_h network
5400         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5401
5402         check_type ws2tcpip.h socklen_t
5403         check_type ws2tcpip.h "struct addrinfo"
5404         check_type ws2tcpip.h "struct group_source_req"
5405         check_type ws2tcpip.h "struct ip_mreq_source"
5406         check_type ws2tcpip.h "struct ipv6_mreq"
5407         check_type winsock2.h "struct pollfd"
5408         check_struct winsock2.h "struct sockaddr" sa_len
5409         check_type ws2tcpip.h "struct sockaddr_in6"
5410         check_type ws2tcpip.h "struct sockaddr_storage"
5411     else
5412         disable network
5413     fi
5414 fi
5415
5416 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5417 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5418 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5419 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5420 check_builtin sarestart signal.h "SA_RESTART"
5421 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5422 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5423 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5424 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5425 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5426
5427 case "$custom_allocator" in
5428     jemalloc)
5429         # jemalloc by default does not use a prefix
5430         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5431     ;;
5432     tcmalloc)
5433         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5434         malloc_prefix=tc_
5435     ;;
5436 esac
5437
5438 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5439 check_func  ${malloc_prefix}memalign            && enable memalign
5440 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5441
5442 check_func  access
5443 check_func  arc4random
5444 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5445 check_func  fcntl
5446 check_func  fork
5447 check_func  gethrtime
5448 check_func  getopt
5449 check_func  getrusage
5450 check_func  gettimeofday
5451 check_func  isatty
5452 check_func  mach_absolute_time
5453 check_func  mkstemp
5454 check_func  mmap
5455 check_func  mprotect
5456 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5457 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5458 check_func  sched_getaffinity
5459 check_func  setrlimit
5460 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5461 check_func  strerror_r
5462 check_func  sysconf
5463 check_func  sysctl
5464 check_func  usleep
5465
5466 check_func_headers conio.h kbhit
5467 check_func_headers io.h setmode
5468 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5469 check_func_headers stdlib.h getenv
5470 check_func_headers sys/stat.h lstat
5471
5472 check_func_headers windows.h CoTaskMemFree -lole32
5473 check_func_headers windows.h GetProcessAffinityMask
5474 check_func_headers windows.h GetProcessTimes
5475 check_func_headers windows.h GetSystemTimeAsFileTime
5476 check_func_headers windows.h MapViewOfFile
5477 check_func_headers windows.h PeekNamedPipe
5478 check_func_headers windows.h SetConsoleTextAttribute
5479 check_func_headers windows.h SetConsoleCtrlHandler
5480 check_func_headers windows.h Sleep
5481 check_func_headers windows.h VirtualAlloc
5482 check_struct windows.h "CONDITION_VARIABLE" Ptr
5483 check_func_headers glob.h glob
5484 enabled xlib &&
5485     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5486
5487 check_header AudioToolbox/AudioToolbox.h
5488 check_header direct.h
5489 check_header dirent.h
5490 check_header dlfcn.h
5491 check_header d3d11.h
5492 check_header dxva.h
5493 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5494 check_header io.h
5495 check_header libcrystalhd/libcrystalhd_if.h
5496 check_header mach/mach_time.h
5497 check_header malloc.h
5498 check_header net/udplite.h
5499 check_header poll.h
5500 check_header sys/mman.h
5501 check_header sys/param.h
5502 check_header sys/resource.h
5503 check_header sys/select.h
5504 check_header sys/time.h
5505 check_header sys/un.h
5506 check_header termios.h
5507 check_header unistd.h
5508 check_header valgrind/valgrind.h
5509 check_header vdpau/vdpau.h
5510 check_header vdpau/vdpau_x11.h
5511 check_header VideoDecodeAcceleration/VDADecoder.h
5512 check_header VideoToolbox/VideoToolbox.h
5513 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5514 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5515 check_header windows.h
5516 check_header X11/extensions/XvMClib.h
5517 check_header asm/types.h
5518
5519 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5520 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5521 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5522 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5523
5524 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5525
5526 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5527 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5528 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5529 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5530 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5531
5532 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5533 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5534 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5535 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5536 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5537 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5538
5539 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5540
5541 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
5542 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
5543 check_type "cuviddec.h" "CUVIDVC1PICPARAMS"
5544 check_type "cuviddec.h" "CUVIDVP9PICPARAMS"
5545
5546 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5547
5548 if ! disabled w32threads && ! enabled pthreads; then
5549     check_func_headers "windows.h process.h" _beginthreadex &&
5550         enable w32threads || disable w32threads
5551     if ! enabled w32threads && enabled winrt; then
5552         check_func_headers "windows.h" CreateThread &&
5553             enable w32threads || disable w32threads
5554     fi
5555 fi
5556
5557 # check for some common methods of building with pthread support
5558 # do this before the optional library checks as some of them require pthreads
5559 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5560     enable pthreads
5561     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5562         add_cflags -pthread
5563         add_extralibs -pthread
5564     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5565         add_cflags -pthreads
5566         add_extralibs -pthreads
5567     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5568         add_cflags -ldl -pthread
5569         add_extralibs -ldl -pthread
5570     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5571         add_extralibs -lpthreadGC2
5572     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5573         :
5574     elif ! check_func pthread_join && ! check_func pthread_create; then
5575         disable pthreads
5576     fi
5577     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5578 fi
5579
5580
5581 if enabled pthreads; then
5582   check_func pthread_cancel
5583 fi
5584
5585 enabled pthreads &&
5586     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5587
5588 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5589 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5590 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5591
5592 check_lib math.h sin -lm && LIBM="-lm"
5593 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5594
5595 atan2f_args=2
5596 copysign_args=2
5597 hypot_args=2
5598 ldexpf_args=2
5599 powf_args=2
5600
5601 for func in $MATH_FUNCS; do
5602     eval check_mathfunc $func \${${func}_args:-1}
5603 done
5604
5605 for func in $COMPLEX_FUNCS; do
5606     eval check_complexfunc $func \${${func}_args:-1}
5607 done
5608
5609 # Enable CUVID by default if CUDA is enabled
5610 if enabled cuda && ! disabled cuvid; then
5611     enable cuvid
5612 fi
5613
5614 # these are off by default, so fail if requested and not available
5615 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5616 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5617                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5618 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5619                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5620                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5621 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
5622                                die "ERROR: CUDA not found"; }
5623 enabled cuvid             && { check_lib cuviddec.h cuvidCreateDecoder -lnvcuvid ||
5624                                die "ERROR: CUVID not found"; } &&
5625                              { enabled cuda ||
5626                                die "ERROR: CUVID requires CUDA"; }
5627 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5628 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5629 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5630 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5631 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5632 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5633 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5634 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5635                                check_lib2 "dlfcn.h" dlopen -ldl; }
5636 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5637 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5638 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5639 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5640 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5641 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5642                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5643                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5644 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5645 enabled libebur128        && require ebur128 ebur128.h ebur128_relative_threshold -lebur128
5646 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5647 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5648                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5649                                  warn "using libfdk without pkg-config"; } }
5650 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"
5651 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5652 enabled fontconfig        && enable libfontconfig
5653 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5654 enabled libfreetype       && require_libfreetype
5655 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5656 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5657 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5658                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5659                                done || die "ERROR: libgsm not found"; }
5660 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5661 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5662 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5663 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5664 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5665 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5666 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5667 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5668 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5669 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5670                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5671                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5672                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5673 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5674 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5675                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5676                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5677                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5678                                die "ERROR: libopenjpeg not found"; }
5679 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5680 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5681 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5682 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5683 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5684 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5685 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5686                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5687 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5688 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5689 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5690 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5691 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5692 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5693 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5694                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5695                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5696 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5697 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5698 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5699 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5700
5701 enabled libvpx            && {
5702     enabled libvpx_vp8_decoder && {
5703         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5704             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5705                 die "ERROR: libvpx decoder version must be >=0.9.1";
5706     }
5707     enabled libvpx_vp8_encoder && {
5708         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5709             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5710                 die "ERROR: libvpx encoder version must be >=0.9.7";
5711     }
5712     enabled libvpx_vp9_decoder && {
5713         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5714             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5715                 disable libvpx_vp9_decoder;
5716     }
5717     enabled libvpx_vp9_encoder && {
5718         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5719             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5720                 disable libvpx_vp9_encoder;
5721     }
5722     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5723         die "libvpx enabled but no supported decoders found"
5724     fi
5725 }
5726
5727 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5728 enabled libwebp           && {
5729     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5730     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5731 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5732                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5733                                  warn "using libx264 without pkg-config"; } } &&
5734                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5735                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5736                              { check_cpp_condition x264.h "X264_MPEG2" &&
5737                                enable libx262; }
5738 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5739                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5740                                die "ERROR: libx265 version must be >= 68."; }
5741 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5742 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5743 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5744 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5745 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5746                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5747                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5748 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5749 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5750                                 { ! enabled cross_compile && {
5751                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5752                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5753                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5754                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5755                                die "ERROR: mmal not found"; }
5756 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5757
5758 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5759 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5760                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
5761                                die "ERROR: NVENC API version 5 or older is not supported"; } &&
5762                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5763 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5764                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5765                                die "ERROR: openal not found"; } &&
5766                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5767                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5768 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5769                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5770                                die "ERROR: opencl not found"; } &&
5771                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5772                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5773                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5774 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5775                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5776                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5777                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5778                                die "ERROR: opengl not found."
5779                              }
5780 enabled omx_rpi && enable omx
5781 enabled omx               && { check_header OMX_Core.h ||
5782                                 { ! enabled cross_compile && enabled omx_rpi && {
5783                                     add_cflags -isystem/opt/vc/include/IL ; }
5784                                 check_header OMX_Core.h ; } ||
5785                                die "ERROR: OpenMAX IL headers not found"; }
5786 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5787                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5788                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5789                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5790                                die "ERROR: openssl not found"; }
5791 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5792
5793 # libdc1394 check
5794 if enabled libdc1394; then
5795     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5796         enable libdc1394_2; } ||
5797     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5798         enable libdc1394_1; } ||
5799     die "ERROR: No version of libdc1394 found "
5800 fi
5801
5802 if enabled gcrypt; then
5803     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5804     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5805         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5806         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5807         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5808             die "ERROR: gcrypt not found"
5809         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5810     else
5811         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5812     fi
5813 fi
5814
5815 if ! disabled sdl; then
5816     SDL_CONFIG="${cross_prefix}sdl-config"
5817     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5818         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5819         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5820         enable sdl
5821     else
5822         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5823             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5824             sdl_libs=$("${SDL_CONFIG}" --libs)
5825             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5826             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5827             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5828             enable sdl
5829         elif enabled sdl ; then
5830             die "ERROR: SDL not found"
5831         else
5832             disable sdl
5833         fi
5834     fi
5835     if test $target_os = "mingw32"; then
5836         sdl_libs="$sdl_libs -mconsole"
5837     fi
5838 fi
5839 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5840
5841 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5842     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5843     enable securetransport; }
5844
5845 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5846                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5847
5848 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5849 enabled makeinfo \
5850     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5851     && enable makeinfo_html || disable makeinfo_html
5852 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5853 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5854 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5855 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5856
5857 check_header linux/fb.h
5858 check_header linux/videodev.h
5859 check_header linux/videodev2.h
5860 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5861
5862 check_header sys/videoio.h
5863 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5864
5865 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5866 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5867 # w32api 3.12 had it defined wrong
5868 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5869
5870 check_type "dshow.h" IBaseFilter
5871
5872 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5873 { check_header dev/bktr/ioctl_meteor.h &&
5874   check_header dev/bktr/ioctl_bt848.h; } ||
5875 { check_header machine/ioctl_meteor.h &&
5876   check_header machine/ioctl_bt848.h; } ||
5877 { check_header dev/video/meteor/ioctl_meteor.h &&
5878   check_header dev/video/bktr/ioctl_bt848.h; } ||
5879 check_header dev/ic/bt8xx.h
5880
5881 check_header sndio.h
5882 if check_struct sys/soundcard.h audio_buf_info bytes; then
5883     enable_safe sys/soundcard.h
5884 else
5885     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5886     #include <sys/soundcard.h>
5887     audio_buf_info abc;
5888 EOF
5889 fi
5890 check_header soundcard.h
5891
5892 enabled_any alsa_indev alsa_outdev &&
5893     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5894
5895 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5896     check_func jack_port_get_latency_range -ljack
5897
5898 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5899
5900 if enabled libcdio; then
5901     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5902     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5903     die "ERROR: No usable libcdio/cdparanoia found"
5904 fi
5905
5906 enabled xlib &&
5907     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5908
5909 if ! disabled libxcb; then
5910     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5911         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5912     } && disable x11grab && enable libxcb
5913
5914 if enabled libxcb; then
5915     disabled libxcb_shm || {
5916         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5917             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5918         } && check_header sys/shm.h && enable libxcb_shm; }
5919
5920     disabled libxcb_xfixes || {
5921         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5922             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5923         } && enable libxcb_xfixes; }
5924
5925     disabled libxcb_shape || {
5926         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5927             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5928         } && enable libxcb_shape; }
5929
5930     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5931     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5932 fi
5933 fi
5934
5935 if enabled x11grab; then
5936     enabled xlib || die "ERROR: Xlib not found"
5937     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5938     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5939 fi
5940
5941 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5942
5943 enabled dxva2api_h &&
5944     check_cc <<EOF && enable dxva2api_cobj
5945 #define _WIN32_WINNT 0x0600
5946 #define COBJMACROS
5947 #include <windows.h>
5948 #include <d3d9.h>
5949 #include <dxva2api.h>
5950 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5951 EOF
5952
5953 enabled vaapi &&
5954     check_lib va/va.h vaInitialize -lva ||
5955     disable vaapi
5956
5957 enabled vaapi &&
5958     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
5959     disable vaapi
5960
5961 if enabled vaapi ; then
5962     enabled xlib &&
5963     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5964     enable vaapi_x11
5965
5966     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
5967     enable vaapi_drm
5968 fi
5969
5970 enabled vdpau &&
5971     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5972     disable vdpau
5973
5974 enabled vdpau && enabled xlib &&
5975     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5976     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5977     enable vdpau_x11
5978
5979 # Funny iconv installations are not unusual, so check it after all flags have been set
5980 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5981
5982 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5983
5984 # add some useful compiler flags if supported
5985 check_cflags -Wdeclaration-after-statement
5986 check_cflags -Wall
5987 check_cflags -Wdisabled-optimization
5988 check_cflags -Wpointer-arith
5989 check_cflags -Wredundant-decls
5990 check_cflags -Wwrite-strings
5991 check_cflags -Wtype-limits
5992 check_cflags -Wundef
5993 check_cflags -Wmissing-prototypes
5994 check_cflags -Wno-pointer-to-int-cast
5995 check_cflags -Wstrict-prototypes
5996 check_cflags -Wempty-body
5997 enabled extra_warnings && check_cflags -Winline
5998 enabled extra_warnings && check_cflags -Wcast-qual
5999
6000 check_disable_warning(){
6001     warning_flag=-W${1#-Wno-}
6002     test_cflags $warning_flag && add_cflags $1
6003 }
6004
6005 check_disable_warning -Wno-parentheses
6006 check_disable_warning -Wno-switch
6007 check_disable_warning -Wno-format-zero-length
6008 check_disable_warning -Wno-pointer-sign
6009 check_disable_warning -Wno-unused-const-variable
6010
6011 # add some linker flags
6012 check_ldflags -Wl,--warn-common
6013 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6014 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6015 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6016 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6017
6018 # add some strip flags
6019 # -wN '..@*' is more selective than -x, but not available everywhere.
6020 check_stripflags -wN \'..@*\' || check_stripflags -x
6021
6022 enabled neon_clobber_test &&
6023     check_ldflags -Wl,--wrap,avcodec_open2              \
6024                   -Wl,--wrap,avcodec_decode_audio4      \
6025                   -Wl,--wrap,avcodec_decode_video2      \
6026                   -Wl,--wrap,avcodec_decode_subtitle2   \
6027                   -Wl,--wrap,avcodec_encode_audio2      \
6028                   -Wl,--wrap,avcodec_encode_video2      \
6029                   -Wl,--wrap,avcodec_encode_subtitle    \
6030                   -Wl,--wrap,swr_convert                \
6031                   -Wl,--wrap,avresample_convert ||
6032     disable neon_clobber_test
6033
6034 enabled xmm_clobber_test &&
6035     check_ldflags -Wl,--wrap,avcodec_open2              \
6036                   -Wl,--wrap,avcodec_decode_audio4      \
6037                   -Wl,--wrap,avcodec_decode_video2      \
6038                   -Wl,--wrap,avcodec_decode_subtitle2   \
6039                   -Wl,--wrap,avcodec_encode_audio2      \
6040                   -Wl,--wrap,avcodec_encode_video2      \
6041                   -Wl,--wrap,avcodec_encode_subtitle    \
6042                   -Wl,--wrap,swr_convert                \
6043                   -Wl,--wrap,avresample_convert         \
6044                   -Wl,--wrap,sws_scale ||
6045     disable xmm_clobber_test
6046
6047 echo "X { local: *; };" > $TMPV
6048 if test_ldflags -Wl,--version-script,$TMPV; then
6049     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
6050 elif test_ldflags -Wl,-M,$TMPV; then
6051     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
6052 fi
6053
6054 check_cc <<EOF && enable symver_asm_label
6055 void ff_foo(void) __asm__ ("av_foo@VERSION");
6056 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6057 EOF
6058     check_cc <<EOF && enable symver_gnu_asm
6059 __asm__(".symver ff_foo,av_foo@VERSION");
6060 void ff_foo(void) {}
6061 EOF
6062
6063 if [ -z "$optflags" ]; then
6064     if enabled small; then
6065         optflags=$cflags_size
6066     elif enabled optimizations; then
6067         optflags=$cflags_speed
6068     else
6069         optflags=$cflags_noopt
6070     fi
6071 fi
6072
6073 check_optflags(){
6074     check_cflags "$@"
6075     enabled lto && check_ldflags "$@"
6076 }
6077
6078
6079 if enabled lto; then
6080     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6081     check_cflags  -flto
6082     check_ldflags -flto $cpuflags
6083     disable inline_asm_direct_symbol_refs
6084 fi
6085
6086 check_optflags $optflags
6087 check_optflags -fno-math-errno
6088 check_optflags -fno-signed-zeros
6089
6090 enabled ftrapv && check_cflags -ftrapv
6091
6092 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6093 int x;
6094 EOF
6095
6096
6097 if enabled icc; then
6098     # Just warnings, no remarks
6099     check_cflags -w1
6100     # -wd: Disable following warnings
6101     # 144, 167, 556: -Wno-pointer-sign
6102     # 188: enumerated type mixed with another type
6103     # 1292: attribute "foo" ignored
6104     # 1419: external declaration in primary source file
6105     # 10006: ignoring unknown option -fno-signed-zeros
6106     # 10148: ignoring unknown option -Wno-parentheses
6107     # 10156: ignoring option '-W'; no argument required
6108     # 13200: No EMMS instruction before call to function
6109     # 13203: No EMMS instruction before return from function
6110     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6111     # 11030: Warning unknown option --as-needed
6112     # 10156: ignoring option '-export'; no argument required
6113     check_ldflags -wd10156,11030
6114     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6115     enable ebp_available
6116     # The test above does not test linking
6117     enabled lto && disable symver_asm_label
6118     if enabled x86_32; then
6119         icc_version=$($cc -dumpversion)
6120         test ${icc_version%%.*} -ge 11 &&
6121             check_cflags -falign-stack=maintain-16-byte ||
6122             disable aligned_stack
6123     fi
6124 elif enabled ccc; then
6125     # disable some annoying warnings
6126     add_cflags -msg_disable bitnotint
6127     add_cflags -msg_disable mixfuncvoid
6128     add_cflags -msg_disable nonstandcast
6129     add_cflags -msg_disable unsupieee
6130 elif enabled gcc; then
6131     case $gcc_basever in
6132         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
6133         4.*)                 check_optflags -fno-tree-vectorize ;;
6134         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
6135     esac
6136     check_cflags -Werror=format-security
6137     check_cflags -Werror=implicit-function-declaration
6138     check_cflags -Werror=missing-prototypes
6139     check_cflags -Werror=return-type
6140     check_cflags -Werror=vla
6141     check_cflags -Wformat
6142     check_cflags -fdiagnostics-color=auto
6143     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6144 elif enabled llvm_gcc; then
6145     check_cflags -mllvm -stack-alignment=16
6146 elif enabled clang; then
6147     check_cflags -mllvm -stack-alignment=16
6148     check_cflags -Qunused-arguments
6149     check_cflags -Werror=implicit-function-declaration
6150     check_cflags -Werror=missing-prototypes
6151     check_cflags -Werror=return-type
6152 elif enabled cparser; then
6153     add_cflags -Wno-missing-variable-declarations
6154     add_cflags -Wno-empty-statement
6155 elif enabled armcc; then
6156     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6157     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6158     # 2523: use of inline assembly is deprecated
6159     add_cflags -W${armcc_opt},--diag_suppress=2523
6160     add_cflags -W${armcc_opt},--diag_suppress=1207
6161     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6162     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6163     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6164     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6165 elif enabled tms470; then
6166     add_cflags -pds=824 -pds=837
6167     disable inline_asm
6168 elif enabled pathscale; then
6169     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6170 elif enabled_any msvc icl; then
6171     enabled x86_32 && disable aligned_stack
6172     enabled_all x86_32 debug && add_cflags -Oy-
6173     enabled debug && add_ldflags -debug
6174     enable pragma_deprecated
6175     if enabled icl; then
6176         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6177         # (correctly) on icl 13.x.
6178         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6179             add_cflags -Qansi-alias
6180         # Some inline asm is not compilable in debug
6181         if enabled debug; then
6182             disable ebp_available
6183             disable ebx_available
6184         fi
6185     fi
6186     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6187     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6188     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6189     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6190     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6191     # MSVC 2013 and newer can handle it fine.
6192     # If this declspec fails, force including stdlib.h before the restrict redefinition
6193     # happens in config.h.
6194     if [ $_restrict != restrict ]; then
6195         check_cc <<EOF || add_cflags -FIstdlib.h
6196 __declspec($_restrict) void* foo(int);
6197 EOF
6198     fi
6199     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6200 fi
6201
6202 for pfx in "" host_; do
6203     varname=${pfx%_}cc_type
6204     eval "type=\$$varname"
6205     if [ $type = "msvc" ]; then
6206         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6207 static inline int foo(int a) { return a; }
6208 EOF
6209     fi
6210 done
6211
6212 case $as_type in
6213     clang)
6214         add_asflags -Qunused-arguments
6215     ;;
6216 esac
6217
6218 case $ld_type in
6219     clang)
6220         check_ldflags -Qunused-arguments
6221     ;;
6222 esac
6223
6224 case $target_os in
6225     osf1)
6226         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6227     ;;
6228     plan9)
6229         add_cppflags -Dmain=plan9_main
6230     ;;
6231 esac
6232
6233 enable frame_thread_encoder
6234
6235 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6236
6237 check_deps $CONFIG_LIST       \
6238            $CONFIG_EXTRA      \
6239            $HAVE_LIST         \
6240            $ALL_COMPONENTS    \
6241
6242 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"
6243
6244
6245 if test $target_os = "haiku"; then
6246     disable memalign
6247     disable posix_memalign
6248 fi
6249
6250 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6251     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6252     enable dxva2_lib
6253
6254 ! enabled_any memalign posix_memalign aligned_malloc &&
6255     enabled simd_align_16 && enable memalign_hack
6256
6257 # add_dep lib dep
6258 # -> enable ${lib}_deps_${dep}
6259 # -> add $dep to ${lib}_deps only once
6260 add_dep() {
6261     lib=$1
6262     dep=$2
6263     enabled "${lib}_deps_${dep}" && return 0
6264     enable  "${lib}_deps_${dep}"
6265     prepend "${lib}_deps" $dep
6266 }
6267
6268 # merge deps lib components
6269 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6270 merge_deps() {
6271     lib=$1
6272     shift
6273     for comp in $*; do
6274         enabled $comp || continue
6275         eval "dep=\"\$${comp}_deps\""
6276         for d in $dep; do
6277             add_dep $lib $d
6278         done
6279     done
6280 }
6281
6282 merge_deps libavfilter $FILTER_LIST
6283
6284 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6285
6286 for thread in $THREADS_LIST; do
6287     if enabled $thread; then
6288         test -n "$thread_type" &&
6289             die "ERROR: Only one thread type must be selected." ||
6290             thread_type="$thread"
6291     fi
6292 done
6293
6294 enabled zlib && add_cppflags -DZLIB_CONST
6295
6296 # conditional library dependencies, in linking order
6297 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6298 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6299 enabled aresample_filter    && prepend avfilter_deps "swresample"
6300 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6301 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6302 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6303 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6304 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6305 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6306 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6307 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6308 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6309 enabled pan_filter          && prepend avfilter_deps "swresample"
6310 enabled pp_filter           && prepend avfilter_deps "postproc"
6311 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6312 enabled resample_filter && prepend avfilter_deps "avresample"
6313 enabled sab_filter          && prepend avfilter_deps "swscale"
6314 enabled scale_filter    && prepend avfilter_deps "swscale"
6315 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6316 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6317 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6318 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6319 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6320 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6321 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6322 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6323 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6324
6325 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6326
6327 enabled opus_decoder    && prepend avcodec_deps "swresample"
6328
6329 expand_deps(){
6330     lib_deps=${1}_deps
6331     eval "deps=\$$lib_deps"
6332     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6333     unique $lib_deps
6334 }
6335
6336 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6337 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6338
6339 map 'expand_deps $v' $LIBRARY_LIST
6340
6341 echo "install prefix            $prefix"
6342 echo "source path               $source_path"
6343 echo "C compiler                $cc"
6344 echo "C library                 $libc_type"
6345 if test "$host_cc" != "$cc"; then
6346     echo "host C compiler           $host_cc"
6347     echo "host C library            $host_libc_type"
6348 fi
6349 echo "ARCH                      $arch ($cpu)"
6350 if test "$build_suffix" != ""; then
6351     echo "build suffix              $build_suffix"
6352 fi
6353 if test "$progs_suffix" != ""; then
6354     echo "progs suffix              $progs_suffix"
6355 fi
6356 if test "$extra_version" != ""; then
6357     echo "version string suffix     $extra_version"
6358 fi
6359 echo "big-endian                ${bigendian-no}"
6360 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6361 if enabled x86; then
6362     echo "${yasmexe}                      ${yasm-no}"
6363     echo "MMX enabled               ${mmx-no}"
6364     echo "MMXEXT enabled            ${mmxext-no}"
6365     echo "3DNow! enabled            ${amd3dnow-no}"
6366     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6367     echo "SSE enabled               ${sse-no}"
6368     echo "SSSE3 enabled             ${ssse3-no}"
6369     echo "AESNI enabled             ${aesni-no}"
6370     echo "AVX enabled               ${avx-no}"
6371     echo "XOP enabled               ${xop-no}"
6372     echo "FMA3 enabled              ${fma3-no}"
6373     echo "FMA4 enabled              ${fma4-no}"
6374     echo "i686 features enabled     ${i686-no}"
6375     echo "CMOV is fast              ${fast_cmov-no}"
6376     echo "EBX available             ${ebx_available-no}"
6377     echo "EBP available             ${ebp_available-no}"
6378 fi
6379 if enabled aarch64; then
6380     echo "NEON enabled              ${neon-no}"
6381     echo "VFP enabled               ${vfp-no}"
6382 fi
6383 if enabled arm; then
6384     echo "ARMv5TE enabled           ${armv5te-no}"
6385     echo "ARMv6 enabled             ${armv6-no}"
6386     echo "ARMv6T2 enabled           ${armv6t2-no}"
6387     echo "VFP enabled               ${vfp-no}"
6388     echo "NEON enabled              ${neon-no}"
6389     echo "THUMB enabled             ${thumb-no}"
6390 fi
6391 if enabled mips; then
6392     echo "MIPS FPU enabled          ${mipsfpu-no}"
6393     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6394     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6395     echo "MIPS MSA enabled          ${msa-no}"
6396     echo "LOONGSON MMI enabled      ${mmi-no}"
6397 fi
6398 if enabled ppc; then
6399     echo "AltiVec enabled           ${altivec-no}"
6400     echo "VSX enabled               ${vsx-no}"
6401     echo "POWER8 enabled            ${power8-no}"
6402     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6403     echo "dcbzl available           ${dcbzl-no}"
6404 fi
6405 echo "debug symbols             ${debug-no}"
6406 echo "strip symbols             ${stripping-no}"
6407 echo "optimize for size         ${small-no}"
6408 echo "optimizations             ${optimizations-no}"
6409 echo "static                    ${static-no}"
6410 echo "shared                    ${shared-no}"
6411 echo "postprocessing support    ${postproc-no}"
6412 echo "new filter support        ${avfilter-no}"
6413 echo "network support           ${network-no}"
6414 echo "threading support         ${thread_type-no}"
6415 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6416 echo "SDL support               ${sdl-no}"
6417 echo "opencl enabled            ${opencl-no}"
6418 echo "JNI support               ${jni-no}"
6419 echo "texi2html enabled         ${texi2html-no}"
6420 echo "perl enabled              ${perl-no}"
6421 echo "pod2man enabled           ${pod2man-no}"
6422 echo "makeinfo enabled          ${makeinfo-no}"
6423 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6424 test -n "$random_seed" &&
6425     echo "random seed               ${random_seed}"
6426 echo
6427
6428 echo "Enabled programs:"
6429 print_enabled '' $PROGRAM_LIST | print_in_columns
6430 echo
6431
6432 echo "External libraries:"
6433 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6434 echo
6435
6436 echo "Libraries:"
6437 print_enabled '' $LIBRARY_LIST | print_in_columns
6438 echo
6439
6440 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6441     echo "Enabled ${type}s:"
6442     eval list=\$$(toupper $type)_LIST
6443     print_enabled '_*' $list | print_in_columns
6444     echo
6445 done
6446
6447 echo "Enabled Hardware-accelerated codecs:"
6448 print_enabled '' $HW_CODECS_LIST | print_in_columns
6449 echo
6450
6451 license="LGPL version 2.1 or later"
6452 if enabled nonfree; then
6453     license="nonfree and unredistributable"
6454 elif enabled gplv3; then
6455     license="GPL version 3 or later"
6456 elif enabled lgplv3; then
6457     license="LGPL version 3 or later"
6458 elif enabled gpl; then
6459     license="GPL version 2 or later"
6460 fi
6461
6462 echo "License: $license"
6463
6464 echo "Creating config.mak, config.h, and doc/config.texi..."
6465
6466 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6467
6468 enabled stripping || strip="echo skipping strip"
6469
6470 config_files="$TMPH config.mak doc/config.texi"
6471
6472 cat > config.mak <<EOF
6473 # Automatically generated by configure - do not modify!
6474 ifndef FFMPEG_CONFIG_MAK
6475 FFMPEG_CONFIG_MAK=1
6476 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6477 prefix=$prefix
6478 LIBDIR=\$(DESTDIR)$libdir
6479 SHLIBDIR=\$(DESTDIR)$shlibdir
6480 INCDIR=\$(DESTDIR)$incdir
6481 BINDIR=\$(DESTDIR)$bindir
6482 DATADIR=\$(DESTDIR)$datadir
6483 DOCDIR=\$(DESTDIR)$docdir
6484 MANDIR=\$(DESTDIR)$mandir
6485 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6486 INSTALL_NAME_DIR=$install_name_dir
6487 SRC_PATH=$source_path
6488 SRC_LINK=$source_link
6489 ifndef MAIN_MAKEFILE
6490 SRC_PATH:=\$(SRC_PATH:.%=..%)
6491 endif
6492 CC_IDENT=$cc_ident
6493 ARCH=$arch
6494 INTRINSICS=$intrinsics
6495 CC=$cc
6496 CXX=$cxx
6497 AS=$as
6498 OBJCC=$objcc
6499 LD=$ld
6500 DEPCC=$dep_cc
6501 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6502 DEPAS=$as
6503 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6504 YASM=$yasmexe
6505 DEPYASM=$yasmexe
6506 AR=$ar
6507 ARFLAGS=$arflags
6508 AR_O=$ar_o
6509 RANLIB=$ranlib
6510 STRIP=$strip
6511 CP=cp -p
6512 LN_S=$ln_s
6513 CPPFLAGS=$CPPFLAGS
6514 CFLAGS=$CFLAGS
6515 CXXFLAGS=$CXXFLAGS
6516 OBJCFLAGS=$OBJCFLAGS
6517 ASFLAGS=$ASFLAGS
6518 AS_C=$AS_C
6519 AS_O=$AS_O
6520 OBJCC_C=$OBJCC_C
6521 OBJCC_E=$OBJCC_E
6522 OBJCC_O=$OBJCC_O
6523 CC_C=$CC_C
6524 CC_E=$CC_E
6525 CC_O=$CC_O
6526 CXX_C=$CXX_C
6527 CXX_O=$CXX_O
6528 LD_O=$LD_O
6529 LD_LIB=$LD_LIB
6530 LD_PATH=$LD_PATH
6531 DLLTOOL=$dlltool
6532 WINDRES=$windres
6533 DEPWINDRES=$dep_cc
6534 DOXYGEN=$doxygen
6535 LDFLAGS=$LDFLAGS
6536 LDEXEFLAGS=$LDEXEFLAGS
6537 LDLIBFLAGS=$LDLIBFLAGS
6538 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6539 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6540 YASMFLAGS=$YASMFLAGS
6541 BUILDSUF=$build_suffix
6542 PROGSSUF=$progs_suffix
6543 FULLNAME=$FULLNAME
6544 LIBPREF=$LIBPREF
6545 LIBSUF=$LIBSUF
6546 LIBNAME=$LIBNAME
6547 SLIBPREF=$SLIBPREF
6548 SLIBSUF=$SLIBSUF
6549 EXESUF=$EXESUF
6550 EXTRA_VERSION=$extra_version
6551 CCDEP=$CCDEP
6552 CXXDEP=$CXXDEP
6553 CCDEP_FLAGS=$CCDEP_FLAGS
6554 ASDEP=$ASDEP
6555 ASDEP_FLAGS=$ASDEP_FLAGS
6556 CC_DEPFLAGS=$CC_DEPFLAGS
6557 AS_DEPFLAGS=$AS_DEPFLAGS
6558 HOSTCC=$host_cc
6559 HOSTLD=$host_ld
6560 HOSTCFLAGS=$host_cflags
6561 HOSTCPPFLAGS=$host_cppflags
6562 HOSTEXESUF=$HOSTEXESUF
6563 HOSTLDFLAGS=$host_ldflags
6564 HOSTLIBS=$host_libs
6565 DEPHOSTCC=$host_cc
6566 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6567 HOSTCCDEP=$HOSTCCDEP
6568 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6569 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6570 HOSTCC_C=$HOSTCC_C
6571 HOSTCC_O=$HOSTCC_O
6572 HOSTLD_O=$HOSTLD_O
6573 TARGET_EXEC=$target_exec $target_exec_args
6574 TARGET_PATH=$target_path
6575 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6576 CFLAGS-ffplay=$sdl_cflags
6577 ZLIB=$($ldflags_filter -lz)
6578 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6579 EXTRALIBS=$extralibs
6580 COMPAT_OBJS=$compat_objs
6581 EXEOBJS=$exeobjs
6582 INSTALL=$install
6583 LIBTARGET=${LIBTARGET}
6584 SLIBNAME=${SLIBNAME}
6585 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6586 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6587 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6588 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6589 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6590 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6591 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6592 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6593 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6594 NOREDZONE_FLAGS=$noredzone_flags
6595 EOF
6596
6597 get_version(){
6598     lcname=lib${1}
6599     name=$(toupper $lcname)
6600     file=$source_path/$lcname/version.h
6601     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6602     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6603     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6604     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6605     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6606     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6607 }
6608
6609 map 'get_version $v' $LIBRARY_LIST
6610
6611 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6612
6613 print_program_libs(){
6614     eval "program_libs=\$${1}_libs"
6615     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6616 }
6617
6618 map 'print_program_libs $v' $PROGRAM_LIST
6619
6620 cat > $TMPH <<EOF
6621 /* Automatically generated by configure - do not modify! */
6622 #ifndef FFMPEG_CONFIG_H
6623 #define FFMPEG_CONFIG_H
6624 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6625 #define FFMPEG_LICENSE "$(c_escape $license)"
6626 #define CONFIG_THIS_YEAR 2016
6627 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6628 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6629 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6630 #define av_restrict $_restrict
6631 #define EXTERN_PREFIX "${extern_prefix}"
6632 #define EXTERN_ASM ${extern_prefix}
6633 #define BUILDSUF "$build_suffix"
6634 #define SLIBSUF "$SLIBSUF"
6635 #define HAVE_MMX2 HAVE_MMXEXT
6636 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6637 EOF
6638
6639 test -n "$assert_level" &&
6640     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6641
6642 test -n "$malloc_prefix" &&
6643     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6644
6645 if enabled yasm; then
6646     append config_files $TMPASM
6647     printf '' >$TMPASM
6648 fi
6649
6650 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6651
6652
6653 mkdir -p doc
6654 mkdir -p tests
6655 mkdir -p tests/api
6656 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6657
6658 print_config ARCH_   "$config_files" $ARCH_LIST
6659 print_config HAVE_   "$config_files" $HAVE_LIST
6660 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6661                                      $CONFIG_EXTRA      \
6662                                      $ALL_COMPONENTS    \
6663
6664 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6665 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6666
6667 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6668 cp_if_changed $TMPH config.h
6669 touch .config
6670
6671 enabled yasm && cp_if_changed $TMPASM config.asm
6672
6673 cat > $TMPH <<EOF
6674 /* Generated by ffconf */
6675 #ifndef AVUTIL_AVCONFIG_H
6676 #define AVUTIL_AVCONFIG_H
6677 EOF
6678
6679 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6680
6681 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6682
6683 cp_if_changed $TMPH libavutil/avconfig.h
6684
6685 if test -n "$WARNINGS"; then
6686     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6687     enabled fatal_warnings && exit 1
6688 fi
6689
6690 # generate the lists of enabled components
6691 print_enabled_components(){
6692     file=$1
6693     struct_name=$2
6694     name=$3
6695     shift 3
6696     echo "static const $struct_name *$name[] = {" > $TMPH
6697     for c in $*; do
6698         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6699     done
6700     echo "    NULL };" >> $TMPH
6701     cp_if_changed $TMPH $file
6702 }
6703
6704 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6705 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6706
6707 # build pkg-config files
6708
6709 lib_version(){
6710     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6711 }
6712
6713 pkgconfig_generate(){
6714     name=$1
6715     shortname=${name#lib}${build_suffix}
6716     comment=$2
6717     version=$3
6718     libs=$4
6719     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6720     requires=${requires%, }
6721     enabled ${name#lib} || return 0
6722     mkdir -p $name
6723     cat <<EOF > $name/$name${build_suffix}.pc
6724 prefix=$prefix
6725 exec_prefix=\${prefix}
6726 libdir=$libdir
6727 includedir=$incdir
6728
6729 Name: $name
6730 Description: $comment
6731 Version: $version
6732 Requires: $(enabled shared || echo $requires)
6733 Requires.private: $(enabled shared && echo $requires)
6734 Conflicts:
6735 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6736 Libs.private: $(enabled shared && echo $libs)
6737 Cflags: -I\${includedir}
6738 EOF
6739
6740 mkdir -p doc/examples/pc-uninstalled
6741 includedir=${source_path}
6742 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6743     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6744 prefix=
6745 exec_prefix=
6746 libdir=\${pcfiledir}/../../../$name
6747 includedir=${includedir}
6748
6749 Name: $name
6750 Description: $comment
6751 Version: $version
6752 Requires: $requires
6753 Conflicts:
6754 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6755 Cflags: -I\${includedir}
6756 EOF
6757 }
6758
6759 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6760 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6761 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6762 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6763 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6764 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6765 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6766 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6767 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"