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-libopenmpt      enable decoding tracked files via libopenmpt [no]
 249   --enable-libopus         enable Opus de/encoding via libopus [no]
 250   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 251   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 252   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 253   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 254   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 255   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 256   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 257   --enable-libsoxr         enable Include libsoxr resampling [no]
 258   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 259   --enable-libssh          enable SFTP protocol via libssh [no]
 260   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 261   --enable-libtheora       enable Theora encoding via libtheora [no]
 262   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 263   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 264   --enable-libvidstab      enable video stabilization using vid.stab [no]
 265   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 266   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 267                            native implementation exists [no]
 268   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 269   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 270   --enable-libwebp         enable WebP encoding via libwebp [no]
 271   --enable-libx264         enable H.264 encoding via x264 [no]
 272   --enable-libx265         enable HEVC encoding via x265 [no]
 273   --enable-libxavs         enable AVS encoding via xavs [no]
 274   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 275   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 276   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 277   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 278   --enable-libxvid         enable Xvid encoding via xvidcore,
 279                            native MPEG-4/Xvid encoder exists [no]
 280   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 281   --enable-libzmq          enable message passing via libzmq [no]
 282   --enable-libzvbi         enable teletext support via libzvbi [no]
 283   --disable-lzma           disable lzma [autodetect]
 284   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 285   --enable-mediacodec      enable Android MediaCodec support [no]
 286   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 287   --enable-openal          enable OpenAL 1.1 capture support [no]
 288   --enable-opencl          enable OpenCL code
 289   --enable-opengl          enable OpenGL rendering [no]
 290   --enable-openssl         enable openssl, needed for https support
 291                            if gnutls is not used [no]
 292   --disable-schannel       disable SChannel SSP, needed for TLS support on
 293                            Windows if openssl and gnutls are not used [autodetect]
 294   --disable-sdl            disable sdl [autodetect]
 295   --disable-securetransport disable Secure Transport, needed for TLS support
 296                            on OSX if openssl and gnutls are not used [autodetect]
 297   --enable-x11grab         enable X11 grabbing (legacy) [no]
 298   --disable-xlib           disable xlib [autodetect]
 299   --disable-zlib           disable zlib [autodetect]
 300
 301   The following libraries provide various hardware acceleration features:
 302   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 303   --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
 304   --enable-cuvid           enable Nvidia CUVID support [autodetect]
 305   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 306   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 307   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 308   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 309   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 310   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 311   --enable-omx             enable OpenMAX IL code [no]
 312   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 313   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 314   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 315   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 316   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 317
 318 Toolchain options:
 319   --arch=ARCH              select architecture [$arch]
 320   --cpu=CPU                select the minimum required CPU (affects
 321                            instruction selection, may crash on older CPUs)
 322   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 323   --progs-suffix=SUFFIX    program name suffix []
 324   --enable-cross-compile   assume a cross-compiler is used
 325   --sysroot=PATH           root of cross-build tree
 326   --sysinclude=PATH        location of cross-build system headers
 327   --target-os=OS           compiler targets OS [$target_os]
 328   --target-exec=CMD        command to run executables on target
 329   --target-path=DIR        path to view of build directory on target
 330   --target-samples=DIR     path to samples directory on target
 331   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 332   --toolchain=NAME         set tool defaults according to NAME
 333   --nm=NM                  use nm tool NM [$nm_default]
 334   --ar=AR                  use archive tool AR [$ar_default]
 335   --as=AS                  use assembler AS [$as_default]
 336   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 337   --strip=STRIP            use strip tool STRIP [$strip_default]
 338   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 339   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 340   --cc=CC                  use C compiler CC [$cc_default]
 341   --cxx=CXX                use C compiler CXX [$cxx_default]
 342   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 343   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 344   --ld=LD                  use linker LD [$ld_default]
 345   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 346   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 347   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 348   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 349   --host-cc=HOSTCC         use host C compiler HOSTCC
 350   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 351   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 352   --host-ld=HOSTLD         use host linker HOSTLD
 353   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 354   --host-libs=HLIBS        use libs HLIBS when linking for host
 355   --host-os=OS             compiler host OS [$target_os]
 356   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 357   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 358   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 359   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 360   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 361   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 362   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 363   --extra-version=STRING   version string suffix []
 364   --optflags=OPTFLAGS      override optimization-related compiler flags
 365   --build-suffix=SUFFIX    library name suffix []
 366   --enable-pic             build position-independent code
 367   --enable-thumb           compile for Thumb instruction set
 368   --enable-lto             use link-time optimization
 369   --env="ENV=override"     override the environment variables
 370
 371 Advanced options (experts only):
 372   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 373   --custom-allocator=NAME  use a supported custom allocator
 374   --disable-symver         disable symbol versioning
 375   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 376   --disable-safe-bitstream-reader
 377                            disable buffer boundary checking in bitreaders
 378                            (faster, but may crash)
 379   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 380   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 381
 382 Optimization options (experts only):
 383   --disable-asm            disable all assembly optimizations
 384   --disable-altivec        disable AltiVec optimizations
 385   --disable-vsx            disable VSX optimizations
 386   --disable-power8         disable POWER8 optimizations
 387   --disable-amd3dnow       disable 3DNow! optimizations
 388   --disable-amd3dnowext    disable 3DNow! extended optimizations
 389   --disable-mmx            disable MMX optimizations
 390   --disable-mmxext         disable MMXEXT optimizations
 391   --disable-sse            disable SSE optimizations
 392   --disable-sse2           disable SSE2 optimizations
 393   --disable-sse3           disable SSE3 optimizations
 394   --disable-ssse3          disable SSSE3 optimizations
 395   --disable-sse4           disable SSE4 optimizations
 396   --disable-sse42          disable SSE4.2 optimizations
 397   --disable-avx            disable AVX optimizations
 398   --disable-xop            disable XOP optimizations
 399   --disable-fma3           disable FMA3 optimizations
 400   --disable-fma4           disable FMA4 optimizations
 401   --disable-avx2           disable AVX2 optimizations
 402   --disable-aesni          disable AESNI optimizations
 403   --disable-armv5te        disable armv5te optimizations
 404   --disable-armv6          disable armv6 optimizations
 405   --disable-armv6t2        disable armv6t2 optimizations
 406   --disable-vfp            disable VFP optimizations
 407   --disable-neon           disable NEON optimizations
 408   --disable-inline-asm     disable use of inline assembly
 409   --disable-yasm           disable use of nasm/yasm assembly
 410   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 411   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 412   --disable-msa            disable MSA optimizations
 413   --disable-mipsfpu        disable floating point MIPS optimizations
 414   --disable-mmi            disable Loongson SIMD optimizations
 415   --disable-fast-unaligned consider unaligned accesses slow
 416
 417 Developer options (useful when working on FFmpeg itself):
 418   --disable-debug          disable debugging symbols
 419   --enable-debug=LEVEL     set the debug level [$debuglevel]
 420   --disable-optimizations  disable compiler optimizations
 421   --enable-extra-warnings  enable more compiler warnings
 422   --disable-stripping      disable stripping of executables and shared libraries
 423   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 424                            2 causes a slowdown at runtime.
 425   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 426   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 427                            leaks and errors, using the specified valgrind binary.
 428                            Cannot be combined with --target-exec
 429   --enable-ftrapv          Trap arithmetic overflows
 430   --samples=PATH           location of test samples for FATE, if not set use
 431                            \$FATE_SAMPLES at make invocation time.
 432   --enable-neon-clobber-test check NEON registers for clobbering (should be
 433                            used only for debugging purposes)
 434   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 435                            should be used only for debugging purposes)
 436   --enable-random          randomly enable/disable components
 437   --disable-random
 438   --enable-random=LIST     randomly enable/disable specific components or
 439   --disable-random=LIST    component groups. LIST is a comma-separated list
 440                            of NAME[:PROB] entries where NAME is a component
 441                            (group) and PROB the probability associated with
 442                            NAME (default 0.5).
 443   --random-seed=VALUE      seed value for --enable/disable-random
 444   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 445                            (only applies to --disable-optimizations builds)
 446
 447 NOTE: Object files are built at the place where configure is launched.
 448 EOF
 449   exit 0
 450 }
 451
 452 quotes='""'
 453 if test -t 1 && which tput >/dev/null 2>&1; then
 454     ncolors=$(tput colors)
 455     if test -n "$ncolors" && test $ncolors -ge 8; then
 456         bold_color=$(tput bold)
 457         warn_color=$(tput setaf 3)
 458         error_color=$(tput setaf 1)
 459         reset_color=$(tput sgr0)
 460     fi
 461     # 72 used instead of 80 since that's the default of pr
 462     ncols=$(tput cols)
 463 fi
 464 : ${ncols:=72}
 465
 466 log(){
 467     echo "$@" >> $logfile
 468 }
 469
 470 log_file(){
 471     log BEGIN $1
 472     pr -n -t $1 >> $logfile
 473     log END $1
 474 }
 475
 476 warn(){
 477     log "WARNING: $*"
 478     WARNINGS="${WARNINGS}WARNING: $*\n"
 479 }
 480
 481 die(){
 482     log "$@"
 483     echo "$error_color$bold_color$@$reset_color"
 484     cat <<EOF
 485
 486 If you think configure made a mistake, make sure you are using the latest
 487 version from Git.  If the latest version fails, report the problem to the
 488 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 489 EOF
 490     if disabled logging; then
 491         cat <<EOF
 492 Rerun configure with logging enabled (do not use --disable-logging), and
 493 include the log this produces with your report.
 494 EOF
 495     else
 496         cat <<EOF
 497 Include the log file "$logfile" produced by configure as this will help
 498 solve the problem.
 499 EOF
 500     fi
 501     exit 1
 502 }
 503
 504 # Avoid locale weirdness, besides we really just want to translate ASCII.
 505 toupper(){
 506     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 507 }
 508
 509 tolower(){
 510     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 511 }
 512
 513 c_escape(){
 514     echo "$*" | sed 's/["\\]/\\\0/g'
 515 }
 516
 517 sh_quote(){
 518     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 519     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 520     echo "$v"
 521 }
 522
 523 cleanws(){
 524     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 525 }
 526
 527 filter(){
 528     pat=$1
 529     shift
 530     for v; do
 531         eval "case $v in $pat) echo $v ;; esac"
 532     done
 533 }
 534
 535 filter_out(){
 536     pat=$1
 537     shift
 538     for v; do
 539         eval "case $v in $pat) ;; *) echo $v ;; esac"
 540     done
 541 }
 542
 543 map(){
 544     m=$1
 545     shift
 546     for v; do eval $m; done
 547 }
 548
 549 add_suffix(){
 550     suffix=$1
 551     shift
 552     for v; do echo ${v}${suffix}; done
 553 }
 554
 555 set_all(){
 556     value=$1
 557     shift
 558     for var in $*; do
 559         eval $var=$value
 560     done
 561 }
 562
 563 set_weak(){
 564     value=$1
 565     shift
 566     for var; do
 567         eval : \${$var:=$value}
 568     done
 569 }
 570
 571 sanitize_var_name(){
 572     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 573 }
 574
 575 set_safe(){
 576     var=$1
 577     shift
 578     eval $(sanitize_var_name "$var")='$*'
 579 }
 580
 581 get_safe(){
 582     eval echo \$$(sanitize_var_name "$1")
 583 }
 584
 585 pushvar(){
 586     for pvar in $*; do
 587         eval level=\${${pvar}_level:=0}
 588         eval ${pvar}_${level}="\$$pvar"
 589         eval ${pvar}_level=$(($level+1))
 590     done
 591 }
 592
 593 popvar(){
 594     for pvar in $*; do
 595         eval level=\${${pvar}_level:-0}
 596         test $level = 0 && continue
 597         eval level=$(($level-1))
 598         eval $pvar="\${${pvar}_${level}}"
 599         eval ${pvar}_level=$level
 600         eval unset ${pvar}_${level}
 601     done
 602 }
 603
 604 enable(){
 605     set_all yes $*
 606 }
 607
 608 disable(){
 609     set_all no $*
 610 }
 611
 612 enable_weak(){
 613     set_weak yes $*
 614 }
 615
 616 disable_weak(){
 617     set_weak no $*
 618 }
 619
 620 enable_safe(){
 621     for var; do
 622         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 623     done
 624 }
 625
 626 disable_safe(){
 627     for var; do
 628         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 629     done
 630 }
 631
 632 do_enable_deep(){
 633     for var; do
 634         enabled $var && continue
 635         eval sel="\$${var}_select"
 636         eval sgs="\$${var}_suggest"
 637         pushvar var sgs
 638         enable_deep $sel
 639         popvar sgs
 640         enable_deep_weak $sgs
 641         popvar var
 642     done
 643 }
 644
 645 enable_deep(){
 646     do_enable_deep $*
 647     enable $*
 648 }
 649
 650 enable_deep_weak(){
 651     for var; do
 652         disabled $var && continue
 653         pushvar var
 654         do_enable_deep $var
 655         popvar var
 656         enable_weak $var
 657     done
 658 }
 659
 660 enabled(){
 661     test "${1#!}" = "$1" && op='=' || op=!=
 662     eval test "x\$${1#!}" $op "xyes"
 663 }
 664
 665 disabled(){
 666     test "${1#!}" = "$1" && op='=' || op=!=
 667     eval test "x\$${1#!}" $op "xno"
 668 }
 669
 670 enabled_all(){
 671     for opt; do
 672         enabled $opt || return 1
 673     done
 674 }
 675
 676 disabled_all(){
 677     for opt; do
 678         disabled $opt || return 1
 679     done
 680 }
 681
 682 enabled_any(){
 683     for opt; do
 684         enabled $opt && return 0
 685     done
 686 }
 687
 688 disabled_any(){
 689     for opt; do
 690         disabled $opt && return 0
 691     done
 692     return 1
 693 }
 694
 695 set_default(){
 696     for opt; do
 697         eval : \${$opt:=\$${opt}_default}
 698     done
 699 }
 700
 701 is_in(){
 702     value=$1
 703     shift
 704     for var in $*; do
 705         [ $var = $value ] && return 0
 706     done
 707     return 1
 708 }
 709
 710 do_check_deps(){
 711     for cfg; do
 712         cfg="${cfg#!}"
 713         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 714         disabled ${cfg}_checking && continue
 715         enable ${cfg}_checking
 716         append allopts $cfg
 717
 718         eval dep_all="\$${cfg}_deps"
 719         eval dep_any="\$${cfg}_deps_any"
 720         eval dep_sel="\$${cfg}_select"
 721         eval dep_sgs="\$${cfg}_suggest"
 722         eval dep_ifa="\$${cfg}_if"
 723         eval dep_ifn="\$${cfg}_if_any"
 724
 725         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 726         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 727         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 728
 729         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 730         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 731         enabled_all  $dep_all || disable $cfg
 732         enabled_any  $dep_any || disable $cfg
 733         disabled_any $dep_sel && disable $cfg
 734
 735         if enabled $cfg; then
 736             enable_deep $dep_sel
 737             enable_deep_weak $dep_sgs
 738         fi
 739
 740         disable ${cfg}_checking
 741     done
 742 }
 743
 744 check_deps(){
 745     unset allopts
 746
 747     do_check_deps "$@"
 748
 749     for cfg in $allopts; do
 750         enabled $cfg || continue
 751         eval dep_extralibs="\$${cfg}_extralibs"
 752         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 753     done
 754 }
 755
 756 print_config(){
 757     pfx=$1
 758     files=$2
 759     shift 2
 760     map 'eval echo "$v \${$v:-no}"' "$@" |
 761     awk "BEGIN { split(\"$files\", files) }
 762         {
 763             c = \"$pfx\" toupper(\$1);
 764             v = \$2;
 765             sub(/yes/, 1, v);
 766             sub(/no/,  0, v);
 767             for (f in files) {
 768                 file = files[f];
 769                 if (file ~ /\\.h\$/) {
 770                     printf(\"#define %s %d\\n\", c, v) >>file;
 771                 } else if (file ~ /\\.asm\$/) {
 772                     printf(\"%%define %s %d\\n\", c, v) >>file;
 773                 } else if (file ~ /\\.mak\$/) {
 774                     n = -v ? \"\" : \"!\";
 775                     printf(\"%s%s=yes\\n\", n, c) >>file;
 776                 } else if (file ~ /\\.texi\$/) {
 777                     pre = -v ? \"\" : \"@c \";
 778                     yesno = \$2;
 779                     c2 = tolower(c);
 780                     gsub(/_/, \"-\", c2);
 781                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 782                 }
 783             }
 784         }"
 785 }
 786
 787 print_enabled(){
 788     suf=$1
 789     shift
 790     for v; do
 791         enabled $v && printf "%s\n" ${v%$suf}
 792     done
 793 }
 794
 795 append(){
 796     var=$1
 797     shift
 798     eval "$var=\"\$$var $*\""
 799 }
 800
 801 prepend(){
 802     var=$1
 803     shift
 804     eval "$var=\"$* \$$var\""
 805 }
 806
 807 unique(){
 808     var=$1
 809     uniq_list=""
 810     for tok in $(eval echo \$$var); do
 811         uniq_list="$(filter_out $tok $uniq_list) $tok"
 812     done
 813     eval "$var=\"${uniq_list}\""
 814 }
 815
 816 add_cppflags(){
 817     append CPPFLAGS "$@"
 818 }
 819
 820 add_cflags(){
 821     append CFLAGS $($cflags_filter "$@")
 822 }
 823
 824 add_cxxflags(){
 825     append CXXFLAGS $($cflags_filter "$@")
 826 }
 827
 828 add_asflags(){
 829     append ASFLAGS $($asflags_filter "$@")
 830 }
 831
 832 add_objcflags(){
 833     append OBJCFLAGS $($objcflags_filter "$@")
 834 }
 835
 836 add_ldflags(){
 837     append LDFLAGS $($ldflags_filter "$@")
 838 }
 839
 840 add_ldexeflags(){
 841     append LDEXEFLAGS $($ldflags_filter "$@")
 842 }
 843
 844 add_ldlibflags(){
 845     append LDLIBFLAGS $($ldflags_filter "$@")
 846 }
 847
 848 add_stripflags(){
 849     append ASMSTRIPFLAGS "$@"
 850 }
 851
 852 add_extralibs(){
 853     prepend extralibs $($ldflags_filter "$@")
 854 }
 855
 856 add_host_cppflags(){
 857     append host_cppflags "$@"
 858 }
 859
 860 add_host_cflags(){
 861     append host_cflags $($host_cflags_filter "$@")
 862 }
 863
 864 add_host_ldflags(){
 865     append host_ldflags $($host_ldflags_filter "$@")
 866 }
 867
 868 add_compat(){
 869     append compat_objs $1
 870     shift
 871     map 'add_cppflags -D$v' "$@"
 872 }
 873
 874 check_cmd(){
 875     log "$@"
 876     "$@" >> $logfile 2>&1
 877 }
 878
 879 check_stat(){
 880     log check_stat "$@"
 881     stat "$1" >> $logfile 2>&1
 882 }
 883
 884 cc_o(){
 885     eval printf '%s\\n' $CC_O
 886 }
 887
 888 cc_e(){
 889     eval printf '%s\\n' $CC_E
 890 }
 891
 892 check_cc(){
 893     log check_cc "$@"
 894     cat > $TMPC
 895     log_file $TMPC
 896     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 897 }
 898
 899 check_cxx(){
 900     log check_cxx "$@"
 901     cat > $TMPCPP
 902     log_file $TMPCPP
 903     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 904 }
 905
 906 check_objcc(){
 907     log check_objcc "$@"
 908     cat > $TMPM
 909     log_file $TMPM
 910     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 911 }
 912
 913 check_cpp(){
 914     log check_cpp "$@"
 915     cat > $TMPC
 916     log_file $TMPC
 917     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 918 }
 919
 920 as_o(){
 921     eval printf '%s\\n' $AS_O
 922 }
 923
 924 check_as(){
 925     log check_as "$@"
 926     cat > $TMPS
 927     log_file $TMPS
 928     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 929 }
 930
 931 check_inline_asm(){
 932     log check_inline_asm "$@"
 933     name="$1"
 934     code="$2"
 935     shift 2
 936     disable $name
 937     check_cc "$@" <<EOF && enable $name
 938 void foo(void){ __asm__ volatile($code); }
 939 EOF
 940 }
 941
 942 check_inline_asm_flags(){
 943     log check_inline_asm_flags "$@"
 944     name="$1"
 945     code="$2"
 946     flags=''
 947     shift 2
 948     while [ "$1" != "" ]; do
 949       append flags $1
 950       shift
 951     done;
 952     disable $name
 953     cat > $TMPC <<EOF
 954 void foo(void){ __asm__ volatile($code); }
 955 EOF
 956     log_file $TMPC
 957     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 958     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 959 }
 960
 961 check_insn(){
 962     log check_insn "$@"
 963     check_inline_asm ${1}_inline "\"$2\""
 964     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 965 }
 966
 967 check_yasm(){
 968     log check_yasm "$@"
 969     echo "$1" > $TMPS
 970     log_file $TMPS
 971     shift 1
 972     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 973 }
 974
 975 ld_o(){
 976     eval printf '%s\\n' $LD_O
 977 }
 978
 979 check_ld(){
 980     log check_ld "$@"
 981     type=$1
 982     shift 1
 983     flags=$(filter_out '-l*|*.so' $@)
 984     libs=$(filter '-l*|*.so' $@)
 985     check_$type $($cflags_filter $flags) || return
 986     flags=$($ldflags_filter $flags)
 987     libs=$($ldflags_filter $libs)
 988     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 989 }
 990
 991 print_include(){
 992     hdr=$1
 993     test "${hdr%.h}" = "${hdr}" &&
 994         echo "#include $hdr"    ||
 995         echo "#include <$hdr>"
 996 }
 997
 998 check_code(){
 999     log check_code "$@"
1000     check=$1
1001     headers=$2
1002     code=$3
1003     shift 3
1004     {
1005         for hdr in $headers; do
1006             print_include $hdr
1007         done
1008         echo "int main(void) { $code; return 0; }"
1009     } | check_$check "$@"
1010 }
1011
1012 check_cppflags(){
1013     log check_cppflags "$@"
1014     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1015 int x;
1016 EOF
1017 }
1018
1019 test_cflags(){
1020     log test_cflags "$@"
1021     set -- $($cflags_filter "$@")
1022     check_cc "$@" <<EOF
1023 int x;
1024 EOF
1025 }
1026
1027 check_cflags(){
1028     log check_cflags "$@"
1029     test_cflags "$@" && add_cflags "$@"
1030 }
1031
1032 check_cxxflags(){
1033     log check_cxxflags "$@"
1034     set -- $($cflags_filter "$@")
1035     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1036 int x;
1037 EOF
1038 }
1039
1040 test_objcflags(){
1041     log test_cflags "$@"
1042     set -- $($cflags_filter "$@")
1043     check_objcc "$@" <<EOF
1044 int x;
1045 EOF
1046 }
1047
1048 check_objcflags(){
1049     log check_cflags "$@"
1050     test_objcflags "$@" && add_objcflags "$@"
1051 }
1052
1053 test_ldflags(){
1054     log test_ldflags "$@"
1055     check_ld "cc" "$@" <<EOF
1056 int main(void){ return 0; }
1057 EOF
1058 }
1059
1060 check_ldflags(){
1061     log check_ldflags "$@"
1062     test_ldflags "$@" && add_ldflags "$@"
1063 }
1064
1065 test_stripflags(){
1066     log test_stripflags "$@"
1067     # call check_cc to get a fresh TMPO
1068     check_cc <<EOF
1069 int main(void) { return 0; }
1070 EOF
1071     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1072 }
1073
1074 check_stripflags(){
1075     log check_stripflags "$@"
1076     test_stripflags "$@" && add_stripflags "$@"
1077 }
1078
1079 check_header(){
1080     log check_header "$@"
1081     header=$1
1082     shift
1083     disable_safe $header
1084     check_cpp "$@" <<EOF && enable_safe $header
1085 #include <$header>
1086 int x;
1087 EOF
1088 }
1089
1090 check_header_objcc(){
1091     log check_header_objcc "$@"
1092     rm -f -- "$TMPO"
1093     header=$1
1094     shift
1095     disable_safe $header
1096     {
1097        echo "#include <$header>"
1098        echo "int main(void) { return 0; }"
1099     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1100 }
1101
1102 check_func(){
1103     log check_func "$@"
1104     func=$1
1105     shift
1106     disable $func
1107     check_ld "cc" "$@" <<EOF && enable $func
1108 extern int $func();
1109 int main(void){ $func(); }
1110 EOF
1111 }
1112
1113 check_complexfunc(){
1114     log check_complexfunc "$@"
1115     func=$1
1116     narg=$2
1117     shift 2
1118     test $narg = 2 && args="f, g" || args="f * I"
1119     disable $func
1120     check_ld "cc" "$@" <<EOF && enable $func
1121 #include <complex.h>
1122 #include <math.h>
1123 float foo(complex float f, complex float g) { return $func($args); }
1124 int main(void){ return (int) foo; }
1125 EOF
1126 }
1127
1128 check_mathfunc(){
1129     log check_mathfunc "$@"
1130     func=$1
1131     narg=$2
1132     shift 2
1133     test $narg = 2 && args="f, g" || args="f"
1134     disable $func
1135     check_ld "cc" "$@" <<EOF && enable $func
1136 #include <math.h>
1137 float foo(float f, float g) { return $func($args); }
1138 int main(void){ return (int) foo; }
1139 EOF
1140 }
1141
1142 check_func_headers(){
1143     log check_func_headers "$@"
1144     headers=$1
1145     funcs=$2
1146     shift 2
1147     {
1148         for hdr in $headers; do
1149             print_include $hdr
1150         done
1151         for func in $funcs; do
1152             echo "long check_$func(void) { return (long) $func; }"
1153         done
1154         echo "int main(void) { return 0; }"
1155     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1156 }
1157
1158 check_class_headers_cpp(){
1159     log check_class_headers_cpp "$@"
1160     headers=$1
1161     classes=$2
1162     shift 2
1163     {
1164         for hdr in $headers; do
1165             echo "#include <$hdr>"
1166         done
1167         echo "int main(void) { "
1168         i=1
1169         for class in $classes; do
1170             echo "$class obj$i;"
1171             i=$(expr $i + 1)
1172         done
1173         echo "return 0; }"
1174     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1175 }
1176
1177 check_cpp_condition(){
1178     log check_cpp_condition "$@"
1179     header=$1
1180     condition=$2
1181     shift 2
1182     check_cpp "$@" <<EOF
1183 #include <$header>
1184 #if !($condition)
1185 #error "unsatisfied condition: $condition"
1186 #endif
1187 EOF
1188 }
1189
1190 check_lib(){
1191     log check_lib "$@"
1192     header="$1"
1193     func="$2"
1194     shift 2
1195     check_header $header && check_func $func "$@" && add_extralibs "$@"
1196 }
1197
1198 check_lib2(){
1199     log check_lib2 "$@"
1200     headers="$1"
1201     funcs="$2"
1202     shift 2
1203     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1204 }
1205
1206 check_lib_cpp(){
1207     log check_lib_cpp "$@"
1208     headers="$1"
1209     classes="$2"
1210     shift 2
1211     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1212 }
1213
1214 check_pkg_config(){
1215     log check_pkg_config "$@"
1216     pkgandversion="$1"
1217     pkg="${1%% *}"
1218     headers="$2"
1219     funcs="$3"
1220     shift 3
1221     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1222     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1223     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1224     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1225         set_safe "${pkg}_cflags" $pkg_cflags   &&
1226         set_safe "${pkg}_libs"   $pkg_libs
1227 }
1228
1229 check_exec(){
1230     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1231 }
1232
1233 check_exec_crash(){
1234     code=$(cat)
1235
1236     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1237     # are safe but may not be available everywhere.  Thus we use
1238     # raise(SIGTERM) instead.  The check is run in a subshell so we
1239     # can redirect the "Terminated" message from the shell.  SIGBUS
1240     # is not defined by standard C so it is used conditionally.
1241
1242     (check_exec "$@") >> $logfile 2>&1 <<EOF
1243 #include <signal.h>
1244 static void sighandler(int sig){
1245     raise(SIGTERM);
1246 }
1247 int foo(void){
1248     $code
1249 }
1250 int (*func_ptr)(void) = foo;
1251 int main(void){
1252     signal(SIGILL, sighandler);
1253     signal(SIGFPE, sighandler);
1254     signal(SIGSEGV, sighandler);
1255 #ifdef SIGBUS
1256     signal(SIGBUS, sighandler);
1257 #endif
1258     return func_ptr();
1259 }
1260 EOF
1261 }
1262
1263 check_type(){
1264     log check_type "$@"
1265     headers=$1
1266     type=$2
1267     shift 2
1268     disable_safe "$type"
1269     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1270 }
1271
1272 check_struct(){
1273     log check_struct "$@"
1274     headers=$1
1275     struct=$2
1276     member=$3
1277     shift 3
1278     disable_safe "${struct}_${member}"
1279     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1280         enable_safe "${struct}_${member}"
1281 }
1282
1283 check_builtin(){
1284     log check_builtin "$@"
1285     name=$1
1286     headers=$2
1287     builtin=$3
1288     shift 3
1289     disable "$name"
1290     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1291 }
1292
1293 check_compile_assert(){
1294     log check_compile_assert "$@"
1295     name=$1
1296     headers=$2
1297     condition=$3
1298     shift 3
1299     disable "$name"
1300     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1301 }
1302
1303 require(){
1304     name="$1"
1305     header="$2"
1306     func="$3"
1307     shift 3
1308     check_lib $header $func "$@" || die "ERROR: $name not found"
1309 }
1310
1311 require2(){
1312     name="$1"
1313     headers="$2"
1314     func="$3"
1315     shift 3
1316     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1317 }
1318
1319 require_cpp(){
1320     name="$1"
1321     headers="$2"
1322     classes="$3"
1323     shift 3
1324     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1325 }
1326
1327 use_pkg_config(){
1328     pkg="$1"
1329     check_pkg_config "$@" || return 1
1330     add_cflags    $(get_safe "${pkg}_cflags")
1331     add_extralibs $(get_safe "${pkg}_libs")
1332 }
1333
1334 require_pkg_config(){
1335     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1336 }
1337
1338 require_libfreetype(){
1339     log require_libfreetype "$@"
1340     pkg="freetype2"
1341     check_cmd $pkg_config --exists --print-errors $pkg \
1342       || die "ERROR: $pkg not found"
1343     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1344     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1345     {
1346         echo "#include <ft2build.h>"
1347         echo "#include FT_FREETYPE_H"
1348         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1349         echo "int main(void) { return 0; }"
1350     } | check_ld "cc" $pkg_cflags $pkg_libs \
1351       && set_safe "${pkg}_cflags" $pkg_cflags \
1352       && set_safe "${pkg}_libs"   $pkg_libs \
1353       || die "ERROR: $pkg not found"
1354     add_cflags    $(get_safe "${pkg}_cflags")
1355     add_extralibs $(get_safe "${pkg}_libs")
1356 }
1357
1358 hostcc_e(){
1359     eval printf '%s\\n' $HOSTCC_E
1360 }
1361
1362 hostcc_o(){
1363     eval printf '%s\\n' $HOSTCC_O
1364 }
1365
1366 check_host_cc(){
1367     log check_host_cc "$@"
1368     cat > $TMPC
1369     log_file $TMPC
1370     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1371 }
1372
1373 check_host_cpp(){
1374     log check_host_cpp "$@"
1375     cat > $TMPC
1376     log_file $TMPC
1377     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1378 }
1379
1380 check_host_cppflags(){
1381     log check_host_cppflags "$@"
1382     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1383 int x;
1384 EOF
1385 }
1386
1387 check_host_cflags(){
1388     log check_host_cflags "$@"
1389     set -- $($host_cflags_filter "$@")
1390     check_host_cc "$@" <<EOF && append host_cflags "$@"
1391 int x;
1392 EOF
1393 }
1394
1395 check_host_cpp_condition(){
1396     log check_host_cpp_condition "$@"
1397     header=$1
1398     condition=$2
1399     shift 2
1400     check_host_cpp "$@" <<EOF
1401 #include <$header>
1402 #if !($condition)
1403 #error "unsatisfied condition: $condition"
1404 #endif
1405 EOF
1406 }
1407
1408 cp_if_changed(){
1409     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1410     mkdir -p "$(dirname $2)"
1411     $cp_f "$1" "$2"
1412 }
1413
1414 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1415 # system-dependent things.
1416
1417 AVCODEC_COMPONENTS="
1418     bsfs
1419     decoders
1420     encoders
1421     hwaccels
1422     parsers
1423 "
1424
1425 AVDEVICE_COMPONENTS="
1426     indevs
1427     outdevs
1428 "
1429 AVFILTER_COMPONENTS="
1430     filters
1431 "
1432 AVFORMAT_COMPONENTS="
1433     demuxers
1434     muxers
1435     protocols
1436 "
1437
1438 AVRESAMPLE_COMPONENTS=""
1439 AVUTIL_COMPONENTS=""
1440
1441 COMPONENT_LIST="
1442     $AVCODEC_COMPONENTS
1443     $AVDEVICE_COMPONENTS
1444     $AVFILTER_COMPONENTS
1445     $AVFORMAT_COMPONENTS
1446     $AVRESAMPLE_COMPONENTS
1447     $AVUTIL_COMPONENTS
1448 "
1449
1450 EXAMPLE_LIST="
1451     avio_reading_example
1452     avio_dir_cmd_example
1453     decoding_encoding_example
1454     demuxing_decoding_example
1455     extract_mvs_example
1456     filter_audio_example
1457     filtering_audio_example
1458     filtering_video_example
1459     metadata_example
1460     muxing_example
1461     qsvdec_example
1462     remuxing_example
1463     resampling_audio_example
1464     scaling_video_example
1465     transcode_aac_example
1466     transcoding_example
1467 "
1468
1469 EXTERNAL_LIBRARY_LIST="
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     libopencore_amrnb
1505     libopencore_amrwb
1506     libopencv
1507     libopenh264
1508     libopenjpeg
1509     libopenmpt
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 HWACCEL_LIBRARY_LIST="
1559     audiotoolbox
1560     cuda
1561     cuvid
1562     d3d11va
1563     dxva2
1564     libmfx
1565     libnpp
1566     mmal
1567     nvenc
1568     omx
1569     vaapi
1570     vda
1571     vdpau
1572     videotoolbox_hwaccel
1573     xvmc
1574 "
1575
1576 DOCUMENT_LIST="
1577     doc
1578     htmlpages
1579     manpages
1580     podpages
1581     txtpages
1582 "
1583
1584 FEATURE_LIST="
1585     ftrapv
1586     gray
1587     hardcoded_tables
1588     omx_rpi
1589     runtime_cpudetect
1590     safe_bitstream_reader
1591     shared
1592     small
1593     static
1594     swscale_alpha
1595 "
1596
1597 LIBRARY_LIST="
1598     avcodec
1599     avdevice
1600     avfilter
1601     avformat
1602     avresample
1603     avutil
1604     postproc
1605     swresample
1606     swscale
1607 "
1608
1609 LICENSE_LIST="
1610     gpl
1611     nonfree
1612     version3
1613 "
1614
1615 PROGRAM_LIST="
1616     ffplay
1617     ffprobe
1618     ffserver
1619     ffmpeg
1620 "
1621
1622 SUBSYSTEM_LIST="
1623     dct
1624     dwt
1625     error_resilience
1626     faan
1627     fast_unaligned
1628     fft
1629     lsp
1630     lzo
1631     mdct
1632     pixelutils
1633     network
1634     rdft
1635 "
1636
1637 CONFIG_LIST="
1638     $COMPONENT_LIST
1639     $DOCUMENT_LIST
1640     $EXAMPLE_LIST
1641     $EXTERNAL_LIBRARY_LIST
1642     $HWACCEL_LIBRARY_LIST
1643     $FEATURE_LIST
1644     $LICENSE_LIST
1645     $LIBRARY_LIST
1646     $PROGRAM_LIST
1647     $SUBSYSTEM_LIST
1648     fontconfig
1649     incompatible_libav_abi
1650     memalign_hack
1651     memory_poisoning
1652     neon_clobber_test
1653     pic
1654     pod2man
1655     raise_major
1656     thumb
1657     valgrind_backtrace
1658     xmm_clobber_test
1659 "
1660
1661 THREADS_LIST="
1662     pthreads
1663     os2threads
1664     w32threads
1665 "
1666
1667 ATOMICS_LIST="
1668     atomics_gcc
1669     atomics_suncc
1670     atomics_win32
1671 "
1672
1673 ARCH_LIST="
1674     aarch64
1675     alpha
1676     arm
1677     avr32
1678     avr32_ap
1679     avr32_uc
1680     bfin
1681     ia64
1682     m68k
1683     mips
1684     mips64
1685     parisc
1686     ppc
1687     ppc64
1688     s390
1689     sh4
1690     sparc
1691     sparc64
1692     tilegx
1693     tilepro
1694     tomi
1695     x86
1696     x86_32
1697     x86_64
1698 "
1699
1700 ARCH_EXT_LIST_ARM="
1701     armv5te
1702     armv6
1703     armv6t2
1704     armv8
1705     neon
1706     vfp
1707     vfpv3
1708     setend
1709 "
1710
1711 ARCH_EXT_LIST_MIPS="
1712     mipsfpu
1713     mips32r2
1714     mips32r5
1715     mips64r2
1716     mips32r6
1717     mips64r6
1718     mipsdsp
1719     mipsdspr2
1720     msa
1721 "
1722
1723 ARCH_EXT_LIST_LOONGSON="
1724     loongson2
1725     loongson3
1726     mmi
1727 "
1728
1729 ARCH_EXT_LIST_X86_SIMD="
1730     aesni
1731     amd3dnow
1732     amd3dnowext
1733     avx
1734     avx2
1735     fma3
1736     fma4
1737     mmx
1738     mmxext
1739     sse
1740     sse2
1741     sse3
1742     sse4
1743     sse42
1744     ssse3
1745     xop
1746 "
1747
1748 ARCH_EXT_LIST_PPC="
1749     altivec
1750     dcbzl
1751     ldbrx
1752     power8
1753     ppc4xx
1754     vsx
1755 "
1756
1757 ARCH_EXT_LIST_X86="
1758     $ARCH_EXT_LIST_X86_SIMD
1759     cpunop
1760     i686
1761 "
1762
1763 ARCH_EXT_LIST="
1764     $ARCH_EXT_LIST_ARM
1765     $ARCH_EXT_LIST_PPC
1766     $ARCH_EXT_LIST_X86
1767     $ARCH_EXT_LIST_MIPS
1768     $ARCH_EXT_LIST_LOONGSON
1769 "
1770
1771 ARCH_FEATURES="
1772     aligned_stack
1773     fast_64bit
1774     fast_clz
1775     fast_cmov
1776     local_aligned_8
1777     local_aligned_16
1778     local_aligned_32
1779     simd_align_16
1780 "
1781
1782 BUILTIN_LIST="
1783     atomic_cas_ptr
1784     atomic_compare_exchange
1785     machine_rw_barrier
1786     MemoryBarrier
1787     mm_empty
1788     rdtsc
1789     sarestart
1790     sem_timedwait
1791     sync_val_compare_and_swap
1792 "
1793 HAVE_LIST_CMDLINE="
1794     inline_asm
1795     symver
1796     yasm
1797 "
1798
1799 HAVE_LIST_PUB="
1800     bigendian
1801     fast_unaligned
1802     incompatible_libav_abi
1803 "
1804
1805 HEADERS_LIST="
1806     alsa_asoundlib_h
1807     altivec_h
1808     arpa_inet_h
1809     asm_types_h
1810     cdio_paranoia_h
1811     cdio_paranoia_paranoia_h
1812     dispatch_dispatch_h
1813     dev_bktr_ioctl_bt848_h
1814     dev_bktr_ioctl_meteor_h
1815     dev_ic_bt8xx_h
1816     dev_video_bktr_ioctl_bt848_h
1817     dev_video_meteor_ioctl_meteor_h
1818     direct_h
1819     dirent_h
1820     dlfcn_h
1821     d3d11_h
1822     dxva_h
1823     ES2_gl_h
1824     gsm_h
1825     io_h
1826     mach_mach_time_h
1827     machine_ioctl_bt848_h
1828     machine_ioctl_meteor_h
1829     malloc_h
1830     opencv2_core_core_c_h
1831     openjpeg_2_1_openjpeg_h
1832     openjpeg_2_0_openjpeg_h
1833     openjpeg_1_5_openjpeg_h
1834     OpenGL_gl3_h
1835     poll_h
1836     sndio_h
1837     soundcard_h
1838     sys_mman_h
1839     sys_param_h
1840     sys_resource_h
1841     sys_select_h
1842     sys_soundcard_h
1843     sys_time_h
1844     sys_un_h
1845     sys_videoio_h
1846     termios_h
1847     udplite_h
1848     unistd_h
1849     valgrind_valgrind_h
1850     windows_h
1851     winsock2_h
1852 "
1853
1854 INTRINSICS_LIST="
1855     intrinsics_neon
1856 "
1857
1858 COMPLEX_FUNCS="
1859     cabs
1860     cexp
1861 "
1862
1863 MATH_FUNCS="
1864     atanf
1865     atan2f
1866     cbrt
1867     cbrtf
1868     copysign
1869     cosf
1870     erf
1871     exp2
1872     exp2f
1873     expf
1874     hypot
1875     isfinite
1876     isinf
1877     isnan
1878     ldexpf
1879     llrint
1880     llrintf
1881     log2
1882     log2f
1883     log10f
1884     lrint
1885     lrintf
1886     powf
1887     rint
1888     round
1889     roundf
1890     sinf
1891     trunc
1892     truncf
1893 "
1894
1895 SYSTEM_FUNCS="
1896     access
1897     aligned_malloc
1898     arc4random
1899     clock_gettime
1900     closesocket
1901     CommandLineToArgvW
1902     CoTaskMemFree
1903     CryptGenRandom
1904     dlopen
1905     fcntl
1906     flt_lim
1907     fork
1908     getaddrinfo
1909     gethrtime
1910     getopt
1911     GetProcessAffinityMask
1912     GetProcessMemoryInfo
1913     GetProcessTimes
1914     getrusage
1915     GetSystemTimeAsFileTime
1916     gettimeofday
1917     glob
1918     glXGetProcAddress
1919     gmtime_r
1920     inet_aton
1921     isatty
1922     jack_port_get_latency_range
1923     kbhit
1924     LoadLibrary
1925     localtime_r
1926     lstat
1927     lzo1x_999_compress
1928     mach_absolute_time
1929     MapViewOfFile
1930     memalign
1931     mkstemp
1932     mmap
1933     mprotect
1934     nanosleep
1935     PeekNamedPipe
1936     posix_memalign
1937     pthread_cancel
1938     sched_getaffinity
1939     SetConsoleTextAttribute
1940     SetConsoleCtrlHandler
1941     setmode
1942     setrlimit
1943     Sleep
1944     strerror_r
1945     sysconf
1946     sysctl
1947     usleep
1948     UTGetOSTypeFromString
1949     VirtualAlloc
1950     wglGetProcAddress
1951 "
1952
1953 TOOLCHAIN_FEATURES="
1954     as_dn_directive
1955     as_func
1956     as_object_arch
1957     asm_mod_q
1958     attribute_may_alias
1959     attribute_packed
1960     ebp_available
1961     ebx_available
1962     gnu_as
1963     gnu_windres
1964     ibm_asm
1965     inline_asm_direct_symbol_refs
1966     inline_asm_labels
1967     inline_asm_nonlocal_labels
1968     pragma_deprecated
1969     rsync_contimeout
1970     symver_asm_label
1971     symver_gnu_asm
1972     vfp_args
1973     xform_asm
1974     xmm_clobbers
1975 "
1976
1977 TYPES_LIST="
1978     CONDITION_VARIABLE_Ptr
1979     socklen_t
1980     struct_addrinfo
1981     struct_group_source_req
1982     struct_ip_mreq_source
1983     struct_ipv6_mreq
1984     struct_msghdr_msg_flags
1985     struct_pollfd
1986     struct_rusage_ru_maxrss
1987     struct_sctp_event_subscribe
1988     struct_sockaddr_in6
1989     struct_sockaddr_sa_len
1990     struct_sockaddr_storage
1991     struct_stat_st_mtim_tv_nsec
1992     struct_v4l2_frmivalenum_discrete
1993 "
1994
1995 HAVE_LIST="
1996     $ARCH_EXT_LIST
1997     $(add_suffix _external $ARCH_EXT_LIST)
1998     $(add_suffix _inline   $ARCH_EXT_LIST)
1999     $ARCH_FEATURES
2000     $ATOMICS_LIST
2001     $BUILTIN_LIST
2002     $COMPLEX_FUNCS
2003     $HAVE_LIST_CMDLINE
2004     $HAVE_LIST_PUB
2005     $HEADERS_LIST
2006     $INTRINSICS_LIST
2007     $MATH_FUNCS
2008     $SYSTEM_FUNCS
2009     $THREADS_LIST
2010     $TOOLCHAIN_FEATURES
2011     $TYPES_LIST
2012     atomics_native
2013     dos_paths
2014     dxva2_lib
2015     dxva2api_cobj
2016     libc_msvcrt
2017     libdc1394_1
2018     libdc1394_2
2019     makeinfo
2020     makeinfo_html
2021     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2022     perl
2023     pod2man
2024     sdl
2025     section_data_rel_ro
2026     texi2html
2027     threads
2028     vaapi_drm
2029     vaapi_x11
2030     vdpau_x11
2031     winrt
2032     xlib
2033 "
2034
2035 # options emitted with CONFIG_ prefix but not available on the command line
2036 CONFIG_EXTRA="
2037     aandcttables
2038     ac3dsp
2039     audio_frame_queue
2040     audiodsp
2041     blockdsp
2042     bswapdsp
2043     cabac
2044     dirac_parse
2045     dvprofile
2046     exif
2047     faandct
2048     faanidct
2049     fdctdsp
2050     flacdsp
2051     fmtconvert
2052     frame_thread_encoder
2053     g722dsp
2054     golomb
2055     gplv3
2056     h263dsp
2057     h264chroma
2058     h264dsp
2059     h264pred
2060     h264qpel
2061     hpeldsp
2062     huffman
2063     huffyuvdsp
2064     huffyuvencdsp
2065     idctdsp
2066     iirfilter
2067     imdct15
2068     intrax8
2069     iso_media
2070     ividsp
2071     jpegtables
2072     lgplv3
2073     libx262
2074     llauddsp
2075     llviddsp
2076     lpc
2077     lzf
2078     me_cmp
2079     mpeg_er
2080     mpegaudio
2081     mpegaudiodsp
2082     mpegvideo
2083     mpegvideoenc
2084     mss34dsp
2085     pixblockdsp
2086     qpeldsp
2087     qsv
2088     qsvdec
2089     qsvenc
2090     rangecoder
2091     riffdec
2092     riffenc
2093     rtpdec
2094     rtpenc_chain
2095     rv34dsp
2096     sinewin
2097     snappy
2098     srtp
2099     startcode
2100     texturedsp
2101     texturedspenc
2102     tpeldsp
2103     vaapi_encode
2104     vc1dsp
2105     videodsp
2106     vp3dsp
2107     vp56dsp
2108     vp8dsp
2109     vt_bt2020
2110     wma_freqs
2111     wmv2dsp
2112 "
2113
2114 CMDLINE_SELECT="
2115     $ARCH_EXT_LIST
2116     $CONFIG_LIST
2117     $HAVE_LIST_CMDLINE
2118     $THREADS_LIST
2119     asm
2120     cross_compile
2121     debug
2122     extra_warnings
2123     logging
2124     lto
2125     optimizations
2126     rpath
2127     stripping
2128 "
2129
2130 PATHS_LIST="
2131     bindir
2132     datadir
2133     docdir
2134     incdir
2135     libdir
2136     mandir
2137     pkgconfigdir
2138     prefix
2139     shlibdir
2140     install_name_dir
2141 "
2142
2143 CMDLINE_SET="
2144     $PATHS_LIST
2145     ar
2146     arch
2147     as
2148     assert_level
2149     build_suffix
2150     cc
2151     objcc
2152     cpu
2153     cross_prefix
2154     custom_allocator
2155     cxx
2156     dep_cc
2157     doxygen
2158     env
2159     extra_version
2160     gas
2161     host_cc
2162     host_cflags
2163     host_ld
2164     host_ldflags
2165     host_libs
2166     host_os
2167     install
2168     ld
2169     ln_s
2170     logfile
2171     malloc_prefix
2172     nm
2173     optflags
2174     pkg_config
2175     pkg_config_flags
2176     progs_suffix
2177     random_seed
2178     ranlib
2179     samples
2180     strip
2181     sws_max_filter_size
2182     sysinclude
2183     sysroot
2184     target_exec
2185     target_os
2186     target_path
2187     target_samples
2188     tempprefix
2189     toolchain
2190     valgrind
2191     yasmexe
2192 "
2193
2194 CMDLINE_APPEND="
2195     extra_cflags
2196     extra_cxxflags
2197     extra_objcflags
2198     host_cppflags
2199 "
2200
2201 # code dependency declarations
2202
2203 # architecture extensions
2204
2205 armv5te_deps="arm"
2206 armv6_deps="arm"
2207 armv6t2_deps="arm"
2208 armv8_deps="aarch64"
2209 neon_deps_any="aarch64 arm"
2210 intrinsics_neon_deps="neon"
2211 vfp_deps_any="aarch64 arm"
2212 vfpv3_deps="vfp"
2213 setend_deps="arm"
2214
2215 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2216
2217 loongson2_deps="mips"
2218 loongson3_deps="mips"
2219 mipsfpu_deps="mips"
2220 mipsdsp_deps="mips"
2221 mipsdspr2_deps="mips"
2222 mips32r2_deps="mips"
2223 mips32r5_deps="mips"
2224 mips32r6_deps="mips"
2225 mips64r2_deps="mips"
2226 mips64r6_deps="mips"
2227 msa_deps="mipsfpu"
2228 mmi_deps="mips"
2229
2230 altivec_deps="ppc"
2231 dcbzl_deps="ppc"
2232 ldbrx_deps="ppc"
2233 ppc4xx_deps="ppc"
2234 vsx_deps="altivec"
2235 power8_deps="vsx"
2236
2237 cpunop_deps="i686"
2238 x86_64_select="i686"
2239 x86_64_suggest="fast_cmov"
2240
2241 amd3dnow_deps="mmx"
2242 amd3dnowext_deps="amd3dnow"
2243 i686_deps="x86"
2244 mmx_deps="x86"
2245 mmxext_deps="mmx"
2246 sse_deps="mmxext"
2247 sse2_deps="sse"
2248 sse3_deps="sse2"
2249 ssse3_deps="sse3"
2250 sse4_deps="ssse3"
2251 sse42_deps="sse4"
2252 aesni_deps="sse42"
2253 avx_deps="sse42"
2254 xop_deps="avx"
2255 fma3_deps="avx"
2256 fma4_deps="avx"
2257 avx2_deps="avx"
2258
2259 mmx_external_deps="yasm"
2260 mmx_inline_deps="inline_asm"
2261 mmx_suggest="mmx_external mmx_inline"
2262
2263 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2264     eval dep=\$${ext}_deps
2265     eval ${ext}_external_deps='"${dep}_external"'
2266     eval ${ext}_inline_deps='"${dep}_inline"'
2267     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2268 done
2269
2270 aligned_stack_if_any="aarch64 ppc x86"
2271 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2272 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2273 fast_unaligned_if_any="aarch64 ppc x86"
2274 simd_align_16_if_any="altivec neon sse"
2275
2276 # system capabilities
2277 symver_if_any="symver_asm_label symver_gnu_asm"
2278 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2279
2280 # threading support
2281 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2282 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2283 atomics_win32_if="MemoryBarrier"
2284 atomics_native_if_any="$ATOMICS_LIST"
2285 w32threads_deps="atomics_native"
2286 threads_if_any="$THREADS_LIST"
2287
2288 # subsystems
2289 dct_select="rdft"
2290 dirac_parse_select="golomb"
2291 error_resilience_select="me_cmp"
2292 faandct_deps="faan fdctdsp"
2293 faanidct_deps="faan idctdsp"
2294 h264dsp_select="startcode"
2295 frame_thread_encoder_deps="encoders threads"
2296 intrax8_select="blockdsp idctdsp"
2297 mdct_select="fft"
2298 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2299 mpeg_er_select="error_resilience"
2300 mpegaudio_select="mpegaudiodsp"
2301 mpegaudiodsp_select="dct"
2302 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2303 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2304 vc1dsp_select="h264chroma qpeldsp startcode"
2305 rdft_select="fft"
2306
2307 # decoders / encoders
2308 aac_decoder_select="imdct15 mdct sinewin"
2309 aac_fixed_decoder_select="mdct sinewin"
2310 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2311 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2312 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2313 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2314 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2315 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2316 adpcm_g722_decoder_select="g722dsp"
2317 adpcm_g722_encoder_select="g722dsp"
2318 aic_decoder_select="golomb idctdsp"
2319 alac_encoder_select="lpc"
2320 als_decoder_select="bswapdsp"
2321 amrnb_decoder_select="lsp"
2322 amrwb_decoder_select="lsp"
2323 amv_decoder_select="sp5x_decoder exif"
2324 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2325 ape_decoder_select="bswapdsp llauddsp"
2326 apng_decoder_select="zlib"
2327 apng_encoder_select="huffyuvencdsp zlib"
2328 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2329 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2330 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2331 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2332 atrac1_decoder_select="mdct sinewin"
2333 atrac3_decoder_select="mdct"
2334 atrac3p_decoder_select="mdct sinewin"
2335 avrn_decoder_select="exif jpegtables"
2336 bink_decoder_select="blockdsp hpeldsp"
2337 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2338 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2339 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2340 cllc_decoder_select="bswapdsp"
2341 comfortnoise_encoder_select="lpc"
2342 cook_decoder_select="audiodsp mdct sinewin"
2343 cscd_decoder_select="lzo"
2344 cscd_decoder_suggest="zlib"
2345 dca_decoder_select="mdct"
2346 dds_decoder_select="texturedsp"
2347 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2348 dnxhd_decoder_select="blockdsp idctdsp"
2349 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2350 dvvideo_decoder_select="dvprofile idctdsp"
2351 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2352 dxa_decoder_select="zlib"
2353 dxv_decoder_select="lzf texturedsp"
2354 eac3_decoder_select="ac3_decoder"
2355 eac3_encoder_select="ac3_encoder"
2356 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2357 eatgq_decoder_select="aandcttables"
2358 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2359 exr_decoder_select="zlib"
2360 ffv1_decoder_select="golomb rangecoder"
2361 ffv1_encoder_select="rangecoder"
2362 ffvhuff_decoder_select="huffyuv_decoder"
2363 ffvhuff_encoder_select="huffyuv_encoder"
2364 fic_decoder_select="golomb"
2365 flac_decoder_select="flacdsp golomb"
2366 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2367 flashsv2_decoder_select="zlib"
2368 flashsv2_encoder_select="zlib"
2369 flashsv_decoder_select="zlib"
2370 flashsv_encoder_select="zlib"
2371 flv_decoder_select="h263_decoder"
2372 flv_encoder_select="h263_encoder"
2373 fourxm_decoder_select="blockdsp bswapdsp"
2374 fraps_decoder_select="bswapdsp huffman"
2375 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2376 g729_decoder_select="audiodsp"
2377 h261_decoder_select="mpegvideo"
2378 h261_encoder_select="aandcttables mpegvideoenc"
2379 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2380 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2381 h263i_decoder_select="h263_decoder"
2382 h263p_decoder_select="h263_decoder"
2383 h263p_encoder_select="h263_encoder"
2384 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2385 h264_decoder_suggest="error_resilience"
2386 hap_decoder_select="snappy texturedsp"
2387 hap_encoder_deps="libsnappy"
2388 hap_encoder_select="texturedspenc"
2389 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2390 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2391 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2392 iac_decoder_select="imc_decoder"
2393 imc_decoder_select="bswapdsp fft mdct sinewin"
2394 indeo3_decoder_select="hpeldsp"
2395 indeo4_decoder_select="ividsp"
2396 indeo5_decoder_select="ividsp"
2397 interplay_video_decoder_select="hpeldsp"
2398 jpegls_decoder_select="golomb mjpeg_decoder"
2399 jpegls_encoder_select="golomb"
2400 jv_decoder_select="blockdsp"
2401 lagarith_decoder_select="huffyuvdsp"
2402 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2403 loco_decoder_select="golomb"
2404 magicyuv_decoder_select="huffyuvdsp"
2405 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2406 metasound_decoder_select="lsp mdct sinewin"
2407 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2408 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2409 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2410 mjpegb_decoder_select="mjpeg_decoder"
2411 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2412 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2413 mlp_decoder_select="mlp_parser"
2414 motionpixels_decoder_select="bswapdsp"
2415 mp1_decoder_select="mpegaudio"
2416 mp1float_decoder_select="mpegaudio"
2417 mp2_decoder_select="mpegaudio"
2418 mp2float_decoder_select="mpegaudio"
2419 mp3_decoder_select="mpegaudio"
2420 mp3adu_decoder_select="mpegaudio"
2421 mp3adufloat_decoder_select="mpegaudio"
2422 mp3float_decoder_select="mpegaudio"
2423 mp3on4_decoder_select="mpegaudio"
2424 mp3on4float_decoder_select="mpegaudio"
2425 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2426 mpc8_decoder_select="mpegaudiodsp"
2427 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2428 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2429 mpegvideo_decoder_select="mpegvideo"
2430 mpeg1video_decoder_select="mpegvideo"
2431 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2432 mpeg2video_decoder_select="mpegvideo"
2433 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2434 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2435 mpeg4_encoder_select="h263_encoder"
2436 msa1_decoder_select="mss34dsp"
2437 msmpeg4v1_decoder_select="h263_decoder"
2438 msmpeg4v2_decoder_select="h263_decoder"
2439 msmpeg4v2_encoder_select="h263_encoder"
2440 msmpeg4v3_decoder_select="h263_decoder"
2441 msmpeg4v3_encoder_select="h263_encoder"
2442 mss2_decoder_select="vc1_decoder mpegvideo"
2443 mts2_decoder_select="mss34dsp"
2444 mxpeg_decoder_select="mjpeg_decoder"
2445 nellymoser_decoder_select="mdct sinewin"
2446 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2447 nuv_decoder_select="idctdsp lzo"
2448 on2avc_decoder_select="mdct"
2449 opus_decoder_deps="swresample"
2450 opus_decoder_select="imdct15"
2451 png_decoder_select="zlib"
2452 png_encoder_select="huffyuvencdsp zlib"
2453 prores_decoder_select="blockdsp idctdsp"
2454 prores_encoder_select="fdctdsp"
2455 qcelp_decoder_select="lsp"
2456 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2457 ra_144_decoder_select="audiodsp"
2458 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2459 ralf_decoder_select="golomb"
2460 rawvideo_decoder_select="bswapdsp"
2461 rscc_decoder_select="zlib"
2462 rtjpeg_decoder_select="me_cmp"
2463 rv10_decoder_select="h263_decoder"
2464 rv10_encoder_select="h263_encoder"
2465 rv20_decoder_select="h263_decoder"
2466 rv20_encoder_select="h263_encoder"
2467 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2468 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2469 screenpresso_decoder_select="zlib"
2470 shorten_decoder_select="golomb"
2471 sipr_decoder_select="lsp"
2472 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2473 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2474 sonic_decoder_select="golomb rangecoder"
2475 sonic_encoder_select="golomb rangecoder"
2476 sonic_ls_encoder_select="golomb rangecoder"
2477 sp5x_decoder_select="mjpeg_decoder"
2478 svq1_decoder_select="hpeldsp"
2479 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2480 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2481 svq3_decoder_suggest="zlib"
2482 tak_decoder_select="audiodsp"
2483 tdsc_decoder_select="zlib mjpeg_decoder"
2484 theora_decoder_select="vp3_decoder"
2485 thp_decoder_select="mjpeg_decoder"
2486 tiff_decoder_suggest="zlib lzma"
2487 tiff_encoder_suggest="zlib"
2488 truehd_decoder_select="mlp_parser"
2489 truemotion2_decoder_select="bswapdsp"
2490 truespeech_decoder_select="bswapdsp"
2491 tscc_decoder_select="zlib"
2492 twinvq_decoder_select="mdct lsp sinewin"
2493 txd_decoder_select="texturedsp"
2494 utvideo_decoder_select="bswapdsp"
2495 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2496 vble_decoder_select="huffyuvdsp"
2497 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2498 vc1_qsv_decoder_deps="libmfx"
2499 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2500 vc1image_decoder_select="vc1_decoder"
2501 vorbis_decoder_select="mdct"
2502 vorbis_encoder_select="mdct"
2503 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2504 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2505 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2506 vp6a_decoder_select="vp6_decoder"
2507 vp6f_decoder_select="vp6_decoder"
2508 vp7_decoder_select="h264pred videodsp vp8dsp"
2509 vp8_decoder_select="h264pred videodsp vp8dsp"
2510 vp9_decoder_select="videodsp vp9_parser"
2511 webp_decoder_select="vp8_decoder exif"
2512 wmalossless_decoder_select="llauddsp"
2513 wmapro_decoder_select="mdct sinewin wma_freqs"
2514 wmav1_decoder_select="mdct sinewin wma_freqs"
2515 wmav1_encoder_select="mdct sinewin wma_freqs"
2516 wmav2_decoder_select="mdct sinewin wma_freqs"
2517 wmav2_encoder_select="mdct sinewin wma_freqs"
2518 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2519 wmv1_decoder_select="h263_decoder"
2520 wmv1_encoder_select="h263_encoder"
2521 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2522 wmv2_encoder_select="h263_encoder wmv2dsp"
2523 wmv3_decoder_select="vc1_decoder"
2524 wmv3image_decoder_select="wmv3_decoder"
2525 xma1_decoder_select="wmapro_decoder"
2526 xma2_decoder_select="wmapro_decoder"
2527 zerocodec_decoder_select="zlib"
2528 zlib_decoder_select="zlib"
2529 zlib_encoder_select="zlib"
2530 zmbv_decoder_select="zlib"
2531 zmbv_encoder_select="zlib"
2532
2533 # platform codecs
2534 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2535 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2536
2537 # hardware accelerators
2538 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2539 cuvid_deps="cuda"
2540 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2541 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2542 vaapi_deps="va_va_h"
2543 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2544 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2545 vda_deps="vda_framework pthreads"
2546 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2547 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2548 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2549 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2550 xvmc_deps="X11_extensions_XvMClib_h"
2551
2552 h263_cuvid_hwaccel_deps="cuda cuvid CUVIDMPEG4PICPARAMS"
2553 h263_vaapi_hwaccel_deps="vaapi"
2554 h263_vaapi_hwaccel_select="h263_decoder"
2555 h263_videotoolbox_hwaccel_deps="videotoolbox"
2556 h263_videotoolbox_hwaccel_select="h263_decoder"
2557 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2558 h264_cuvid_hwaccel_deps="cuda cuvid CUVIDH264PICPARAMS"
2559 h264_d3d11va_hwaccel_deps="d3d11va"
2560 h264_d3d11va_hwaccel_select="h264_decoder"
2561 h264_dxva2_hwaccel_deps="dxva2"
2562 h264_dxva2_hwaccel_select="h264_decoder"
2563 h264_mediacodec_decoder_deps="mediacodec"
2564 h264_mediacodec_hwaccel_deps="mediacodec"
2565 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2566 h264_mmal_decoder_deps="mmal"
2567 h264_mmal_decoder_select="mmal"
2568 h264_mmal_hwaccel_deps="mmal"
2569 h264_omx_encoder_deps="omx"
2570 h264_qsv_hwaccel_deps="libmfx"
2571 h264_vaapi_hwaccel_deps="vaapi"
2572 h264_vaapi_hwaccel_select="h264_decoder"
2573 h264_vda_decoder_deps="vda"
2574 h264_vda_decoder_select="h264_decoder"
2575 h264_vda_hwaccel_deps="vda"
2576 h264_vda_hwaccel_select="h264_decoder"
2577 h264_vda_old_hwaccel_deps="vda"
2578 h264_vda_old_hwaccel_select="h264_decoder"
2579 h264_vdpau_decoder_deps="vdpau"
2580 h264_vdpau_decoder_select="h264_decoder"
2581 h264_vdpau_hwaccel_deps="vdpau"
2582 h264_vdpau_hwaccel_select="h264_decoder"
2583 h264_videotoolbox_hwaccel_deps="videotoolbox"
2584 h264_videotoolbox_hwaccel_select="h264_decoder"
2585 hevc_cuvid_hwaccel_deps="cuda cuvid CUVIDHEVCPICPARAMS"
2586 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2587 hevc_d3d11va_hwaccel_select="hevc_decoder"
2588 hevc_mediacodec_decoder_deps="mediacodec"
2589 hevc_mediacodec_hwaccel_deps="mediacodec"
2590 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2591 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2592 hevc_dxva2_hwaccel_select="hevc_decoder"
2593 hevc_qsv_hwaccel_deps="libmfx"
2594 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2595 hevc_vaapi_hwaccel_select="hevc_decoder"
2596 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2597 hevc_vdpau_hwaccel_select="hevc_decoder"
2598 mjpeg_cuvid_hwaccel_deps="cuda cuvid CUVIDJPEGPICPARAMS"
2599 mpeg_vdpau_decoder_deps="vdpau"
2600 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2601 mpeg_xvmc_hwaccel_deps="xvmc"
2602 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2603 mpeg1_cuvid_hwaccel_deps="cuda cuvid CUVIDMPEG2PICPARAMS"
2604 mpeg1_vdpau_decoder_deps="vdpau"
2605 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2606 mpeg1_vdpau_hwaccel_deps="vdpau"
2607 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2608 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2609 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2610 mpeg1_xvmc_hwaccel_deps="xvmc"
2611 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2612 mpeg2_crystalhd_decoder_select="crystalhd"
2613 mpeg2_cuvid_hwaccel_deps="cuda cuvid CUVIDMPEG2PICPARAMS"
2614 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2615 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2616 mpeg2_dxva2_hwaccel_deps="dxva2"
2617 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2618 mpeg2_mmal_decoder_deps="mmal"
2619 mpeg2_mmal_decoder_select="mmal"
2620 mpeg2_mmal_hwaccel_deps="mmal"
2621 mpeg2_qsv_hwaccel_deps="libmfx"
2622 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2623 mpeg2_vaapi_hwaccel_deps="vaapi"
2624 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2625 mpeg2_vdpau_hwaccel_deps="vdpau"
2626 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2627 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2628 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2629 mpeg2_xvmc_hwaccel_deps="xvmc"
2630 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2631 mpeg4_crystalhd_decoder_select="crystalhd"
2632 mpeg4_cuvid_hwaccel_deps="cuda cuvid CUVIDMPEG4PICPARAMS"
2633 mpeg4_mmal_decoder_deps="mmal"
2634 mpeg4_mmal_decoder_select="mmal"
2635 mpeg4_mmal_hwaccel_deps="mmal"
2636 mpeg4_omx_encoder_deps="omx"
2637 mpeg4_vaapi_hwaccel_deps="vaapi"
2638 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2639 mpeg4_vdpau_decoder_deps="vdpau"
2640 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2641 mpeg4_vdpau_hwaccel_deps="vdpau"
2642 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2643 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2644 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2645 msmpeg4_crystalhd_decoder_select="crystalhd"
2646 vc1_crystalhd_decoder_select="crystalhd"
2647 vc1_cuvid_hwaccel_deps="cuda cuvid CUVIDVC1PICPARAMS"
2648 vc1_d3d11va_hwaccel_deps="d3d11va"
2649 vc1_d3d11va_hwaccel_select="vc1_decoder"
2650 vc1_dxva2_hwaccel_deps="dxva2"
2651 vc1_dxva2_hwaccel_select="vc1_decoder"
2652 vc1_mmal_decoder_deps="mmal"
2653 vc1_mmal_decoder_select="mmal"
2654 vc1_mmal_hwaccel_deps="mmal"
2655 vc1_qsv_hwaccel_deps="libmfx"
2656 vc1_qsv_hwaccel_select="qsvdec_vc1"
2657 vc1_vaapi_hwaccel_deps="vaapi"
2658 vc1_vaapi_hwaccel_select="vc1_decoder"
2659 vc1_vdpau_decoder_deps="vdpau"
2660 vc1_vdpau_decoder_select="vc1_decoder"
2661 vc1_vdpau_hwaccel_deps="vdpau"
2662 vc1_vdpau_hwaccel_select="vc1_decoder"
2663 vp8_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
2664 vp9_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
2665 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2666 vp9_d3d11va_hwaccel_select="vp9_decoder"
2667 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2668 vp9_dxva2_hwaccel_select="vp9_decoder"
2669 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2670 vp9_vaapi_hwaccel_select="vp9_decoder"
2671 wmv3_crystalhd_decoder_select="crystalhd"
2672 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2673 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2674 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2675 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2676 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2677
2678 # hardware-accelerated codecs
2679 omx_deps="dlopen pthreads"
2680 omx_extralibs='$ldl'
2681 qsvdec_select="qsv"
2682 qsvenc_select="qsv"
2683 vaapi_encode_deps="vaapi"
2684
2685 hwupload_cuda_filter_deps="cuda"
2686 scale_npp_filter_deps="cuda libnpp"
2687
2688 nvenc_deps_any="dlopen LoadLibrary"
2689 nvenc_encoder_deps="nvenc"
2690 h263_cuvid_decoder_deps="cuda cuvid CUVIDMPEG4PICPARAMS"
2691 h263_cuvid_decoder_select="h263_cuvid_hwaccel"
2692 h264_cuvid_decoder_deps="cuda cuvid CUVIDH264PICPARAMS"
2693 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2694 h264_nvenc_encoder_deps="nvenc"
2695 h264_qsv_decoder_deps="libmfx"
2696 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2697 h264_qsv_encoder_deps="libmfx"
2698 h264_qsv_encoder_select="qsvenc"
2699 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2700 h264_vaapi_encoder_select="vaapi_encode golomb"
2701
2702 hevc_cuvid_decoder_deps="cuda cuvid CUVIDHEVCPICPARAMS"
2703 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2704 hevc_nvenc_encoder_deps="nvenc"
2705 hevc_qsv_decoder_deps="libmfx"
2706 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2707 hevc_qsv_encoder_deps="libmfx"
2708 hevc_qsv_encoder_select="qsvenc"
2709 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2710 hevc_vaapi_encoder_select="vaapi_encode golomb"
2711 mjpeg_cuvid_decoder_deps="cuda cuvid CUVIDJPEGPICPARAMS"
2712 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2713 mpeg1_cuvid_decoder_deps="cuda cuvid CUVIDMPEG2PICPARAMS"
2714 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2715 mpeg2_cuvid_decoder_deps="cuda cuvid CUVIDMPEG2PICPARAMS"
2716 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2717 mpeg2_qsv_decoder_deps="libmfx"
2718 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2719 mpeg2_qsv_encoder_deps="libmfx"
2720 mpeg2_qsv_encoder_select="qsvenc"
2721 mpeg4_cuvid_decoder_deps="cuda cuvid CUVIDMPEG4PICPARAMS"
2722 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2723 nvenc_h264_encoder_deps="nvenc"
2724 nvenc_hevc_encoder_deps="nvenc"
2725
2726 vc1_cuvid_decoder_deps="cuda cuvid CUVIDVC1PICPARAMS"
2727 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2728 vp8_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
2729 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2730 vp9_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
2731 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2732
2733 # parsers
2734 h264_parser_select="golomb h264dsp"
2735 hevc_parser_select="golomb"
2736 mpegvideo_parser_select="mpegvideo"
2737 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2738 vc1_parser_select="vc1dsp"
2739
2740 # bitstream_filters
2741 mjpeg2jpeg_bsf_select="jpegtables"
2742
2743 # external libraries
2744 aac_at_decoder_deps="audiotoolbox"
2745 ac3_at_decoder_deps="audiotoolbox"
2746 ac3_at_decoder_select="ac3_parser"
2747 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2748 alac_at_decoder_deps="audiotoolbox"
2749 amr_nb_at_decoder_deps="audiotoolbox"
2750 eac3_at_decoder_deps="audiotoolbox"
2751 eac3_at_decoder_select="ac3_parser"
2752 gsm_ms_at_decoder_deps="audiotoolbox"
2753 ilbc_at_decoder_deps="audiotoolbox"
2754 mp1_at_decoder_deps="audiotoolbox"
2755 mp2_at_decoder_deps="audiotoolbox"
2756 mp3_at_decoder_deps="audiotoolbox"
2757 pcm_alaw_at_decoder_deps="audiotoolbox"
2758 pcm_mulaw_at_decoder_deps="audiotoolbox"
2759 qdmc_at_decoder_deps="audiotoolbox"
2760 qdm2_at_decoder_deps="audiotoolbox"
2761 aac_at_encoder_deps="audiotoolbox"
2762 aac_at_encoder_select="audio_frame_queue"
2763 alac_at_encoder_deps="audiotoolbox"
2764 alac_at_encoder_select="audio_frame_queue"
2765 ilbc_at_encoder_deps="audiotoolbox"
2766 ilbc_at_encoder_select="audio_frame_queue"
2767 pcm_alaw_at_encoder_deps="audiotoolbox"
2768 pcm_alaw_at_encoder_select="audio_frame_queue"
2769 pcm_mulaw_at_encoder_deps="audiotoolbox"
2770 pcm_mulaw_at_encoder_select="audio_frame_queue"
2771 chromaprint_muxer_deps="chromaprint"
2772 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2773 libcelt_decoder_deps="libcelt"
2774 libfaac_encoder_deps="libfaac"
2775 libfaac_encoder_select="audio_frame_queue"
2776 libfdk_aac_decoder_deps="libfdk_aac"
2777 libfdk_aac_encoder_deps="libfdk_aac"
2778 libfdk_aac_encoder_select="audio_frame_queue"
2779 libgme_demuxer_deps="libgme"
2780 libgsm_decoder_deps="libgsm"
2781 libgsm_encoder_deps="libgsm"
2782 libgsm_ms_decoder_deps="libgsm"
2783 libgsm_ms_encoder_deps="libgsm"
2784 libilbc_decoder_deps="libilbc"
2785 libilbc_encoder_deps="libilbc"
2786 libkvazaar_encoder_deps="libkvazaar"
2787 libmodplug_demuxer_deps="libmodplug"
2788 libmp3lame_encoder_deps="libmp3lame"
2789 libmp3lame_encoder_select="audio_frame_queue"
2790 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2791 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2792 libopencore_amrnb_encoder_select="audio_frame_queue"
2793 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2794 libopenh264_decoder_deps="libopenh264"
2795 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2796 libopenh264_encoder_deps="libopenh264"
2797 libopenjpeg_decoder_deps="libopenjpeg"
2798 libopenjpeg_encoder_deps="libopenjpeg"
2799 libopenmpt_demuxer_deps="libopenmpt"
2800 libopus_decoder_deps="libopus"
2801 libopus_encoder_deps="libopus"
2802 libopus_encoder_select="audio_frame_queue"
2803 libschroedinger_decoder_deps="libschroedinger"
2804 libschroedinger_encoder_deps="libschroedinger"
2805 libshine_encoder_deps="libshine"
2806 libshine_encoder_select="audio_frame_queue"
2807 libspeex_decoder_deps="libspeex"
2808 libspeex_encoder_deps="libspeex"
2809 libspeex_encoder_select="audio_frame_queue"
2810 libtheora_encoder_deps="libtheora"
2811 libtwolame_encoder_deps="libtwolame"
2812 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2813 libvorbis_decoder_deps="libvorbis"
2814 libvorbis_encoder_deps="libvorbis"
2815 libvorbis_encoder_select="audio_frame_queue"
2816 libvpx_vp8_decoder_deps="libvpx"
2817 libvpx_vp8_encoder_deps="libvpx"
2818 libvpx_vp9_decoder_deps="libvpx"
2819 libvpx_vp9_encoder_deps="libvpx"
2820 libwavpack_encoder_deps="libwavpack"
2821 libwebp_encoder_deps="libwebp"
2822 libwebp_anim_encoder_deps="libwebp"
2823 libx262_encoder_deps="libx262"
2824 libx264_encoder_deps="libx264"
2825 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2826 libx264rgb_encoder_select="libx264_encoder"
2827 libx265_encoder_deps="libx265"
2828 libxavs_encoder_deps="libxavs"
2829 libxvid_encoder_deps="libxvid"
2830 libzvbi_teletext_decoder_deps="libzvbi"
2831 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2832 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2833 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2834 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2835 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2836
2837 # demuxers / muxers
2838 ac3_demuxer_select="ac3_parser"
2839 asf_demuxer_select="riffdec"
2840 asf_o_demuxer_select="riffdec"
2841 asf_muxer_select="riffenc"
2842 asf_stream_muxer_select="asf_muxer"
2843 avi_demuxer_select="iso_media riffdec exif"
2844 avi_muxer_select="riffenc"
2845 avisynth_demuxer_deps="avisynth"
2846 avisynth_demuxer_select="riffdec"
2847 caf_demuxer_select="iso_media riffdec"
2848 dash_muxer_select="mp4_muxer"
2849 dirac_demuxer_select="dirac_parser"
2850 dts_demuxer_select="dca_parser"
2851 dtshd_demuxer_select="dca_parser"
2852 dv_demuxer_select="dvprofile"
2853 dv_muxer_select="dvprofile"
2854 dxa_demuxer_select="riffdec"
2855 eac3_demuxer_select="ac3_parser"
2856 f4v_muxer_select="mov_muxer"
2857 fifo_muxer_deps="threads"
2858 flac_demuxer_select="flac_parser"
2859 hds_muxer_select="flv_muxer"
2860 hls_muxer_select="mpegts_muxer"
2861 image2_alias_pix_demuxer_select="image2_demuxer"
2862 image2_brender_pix_demuxer_select="image2_demuxer"
2863 ipod_muxer_select="mov_muxer"
2864 ismv_muxer_select="mov_muxer"
2865 libnut_demuxer_deps="libnut"
2866 libnut_muxer_deps="libnut"
2867 matroska_audio_muxer_select="matroska_muxer"
2868 matroska_demuxer_select="iso_media riffdec"
2869 matroska_demuxer_suggest="bzlib lzo zlib"
2870 matroska_muxer_select="iso_media riffenc"
2871 mmf_muxer_select="riffenc"
2872 mov_demuxer_select="iso_media riffdec"
2873 mov_demuxer_suggest="zlib"
2874 mov_muxer_select="iso_media riffenc rtpenc_chain"
2875 mp3_demuxer_select="mpegaudio_parser"
2876 mp4_muxer_select="mov_muxer"
2877 mpegts_demuxer_select="iso_media"
2878 mpegts_muxer_select="adts_muxer latm_muxer"
2879 mpegtsraw_demuxer_select="mpegts_demuxer"
2880 mxf_d10_muxer_select="mxf_muxer"
2881 mxf_opatom_muxer_select="mxf_muxer"
2882 nut_muxer_select="riffenc"
2883 nuv_demuxer_select="riffdec"
2884 oga_muxer_select="ogg_muxer"
2885 ogg_demuxer_select="dirac_parse"
2886 ogv_muxer_select="ogg_muxer"
2887 opus_muxer_select="ogg_muxer"
2888 psp_muxer_select="mov_muxer"
2889 rtp_demuxer_select="sdp_demuxer"
2890 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2891 rtsp_demuxer_select="http_protocol rtpdec"
2892 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2893 sap_demuxer_select="sdp_demuxer"
2894 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2895 sdp_demuxer_select="rtpdec"
2896 smoothstreaming_muxer_select="ismv_muxer"
2897 spdif_muxer_select="aac_parser"
2898 spx_muxer_select="ogg_muxer"
2899 swf_demuxer_suggest="zlib"
2900 tak_demuxer_select="tak_parser"
2901 tg2_muxer_select="mov_muxer"
2902 tgp_muxer_select="mov_muxer"
2903 vobsub_demuxer_select="mpegps_demuxer"
2904 w64_demuxer_select="wav_demuxer"
2905 w64_muxer_select="wav_muxer"
2906 wav_demuxer_select="riffdec"
2907 wav_muxer_select="riffenc"
2908 webm_muxer_select="iso_media riffenc"
2909 webm_dash_manifest_demuxer_select="matroska_demuxer"
2910 wtv_demuxer_select="mpegts_demuxer riffdec"
2911 wtv_muxer_select="mpegts_muxer riffenc"
2912 xmv_demuxer_select="riffdec"
2913 xwma_demuxer_select="riffdec"
2914
2915 # indevs / outdevs
2916 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2917 alsa_outdev_deps="alsa_asoundlib_h"
2918 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2919 avfoundation_indev_select="avfoundation"
2920 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2921 caca_outdev_deps="libcaca"
2922 decklink_indev_deps="decklink pthreads"
2923 decklink_indev_extralibs="-lstdc++"
2924 decklink_outdev_deps="decklink pthreads"
2925 decklink_outdev_extralibs="-lstdc++"
2926 dshow_indev_deps="IBaseFilter"
2927 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2928 dv1394_indev_deps="dv1394"
2929 dv1394_indev_select="dv_demuxer"
2930 fbdev_indev_deps="linux_fb_h"
2931 fbdev_outdev_deps="linux_fb_h"
2932 gdigrab_indev_deps="CreateDIBSection"
2933 gdigrab_indev_extralibs="-lgdi32"
2934 gdigrab_indev_select="bmp_decoder"
2935 iec61883_indev_deps="libiec61883"
2936 jack_indev_deps="jack_jack_h"
2937 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2938 lavfi_indev_deps="avfilter"
2939 libcdio_indev_deps="libcdio"
2940 libdc1394_indev_deps="libdc1394"
2941 libv4l2_indev_deps="libv4l2"
2942 openal_indev_deps="openal"
2943 opengl_outdev_deps="opengl"
2944 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2945 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2946 pulse_indev_deps="libpulse"
2947 pulse_outdev_deps="libpulse"
2948 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2949 qtkit_indev_select="qtkit"
2950 sdl_outdev_deps="sdl"
2951 sndio_indev_deps="sndio_h"
2952 sndio_outdev_deps="sndio_h"
2953 v4l_indev_deps="linux_videodev_h"
2954 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2955 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2956 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2957 vfwcap_indev_extralibs="-lavicap32"
2958 x11grab_indev_deps="x11grab"
2959 x11grab_xcb_indev_deps="libxcb"
2960 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2961 xv_outdev_extralibs="-lXv -lX11 -lXext"
2962
2963 # protocols
2964 async_protocol_deps="threads"
2965 bluray_protocol_deps="libbluray"
2966 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2967 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2968 ffrtmpcrypt_protocol_select="tcp_protocol"
2969 ffrtmphttp_protocol_deps="!librtmp_protocol"
2970 ffrtmphttp_protocol_select="http_protocol"
2971 ftp_protocol_select="tcp_protocol"
2972 gopher_protocol_select="network"
2973 http_protocol_select="tcp_protocol"
2974 httpproxy_protocol_select="tcp_protocol"
2975 https_protocol_select="tls_protocol"
2976 icecast_protocol_select="http_protocol"
2977 librtmp_protocol_deps="librtmp"
2978 librtmpe_protocol_deps="librtmp"
2979 librtmps_protocol_deps="librtmp"
2980 librtmpt_protocol_deps="librtmp"
2981 librtmpte_protocol_deps="librtmp"
2982 libsmbclient_protocol_deps="libsmbclient gplv3"
2983 libssh_protocol_deps="libssh"
2984 mmsh_protocol_select="http_protocol"
2985 mmst_protocol_select="network"
2986 rtmp_protocol_deps="!librtmp_protocol"
2987 rtmp_protocol_select="tcp_protocol"
2988 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2989 rtmps_protocol_deps="!librtmp_protocol"
2990 rtmps_protocol_select="tls_protocol"
2991 rtmpt_protocol_select="ffrtmphttp_protocol"
2992 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2993 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2994 rtp_protocol_select="udp_protocol"
2995 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2996 sctp_protocol_select="network"
2997 srtp_protocol_select="rtp_protocol srtp"
2998 tcp_protocol_select="network"
2999 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3000 tls_gnutls_protocol_select="tcp_protocol"
3001 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3002 tls_openssl_protocol_select="tcp_protocol"
3003 tls_schannel_protocol_deps="schannel"
3004 tls_schannel_protocol_select="tcp_protocol"
3005 tls_securetransport_protocol_deps="securetransport"
3006 tls_securetransport_protocol_select="tcp_protocol"
3007 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3008 udp_protocol_select="network"
3009 udplite_protocol_select="network"
3010 unix_protocol_deps="sys_un_h"
3011 unix_protocol_select="network"
3012
3013 # filters
3014 afftfilt_filter_deps="avcodec"
3015 afftfilt_filter_select="fft"
3016 amovie_filter_deps="avcodec avformat"
3017 aresample_filter_deps="swresample"
3018 ass_filter_deps="libass"
3019 asyncts_filter_deps="avresample"
3020 atempo_filter_deps="avcodec"
3021 atempo_filter_select="rdft"
3022 azmq_filter_deps="libzmq"
3023 blackframe_filter_deps="gpl"
3024 boxblur_filter_deps="gpl"
3025 bs2b_filter_deps="libbs2b"
3026 colormatrix_filter_deps="gpl"
3027 cover_rect_filter_deps="avcodec avformat gpl"
3028 cropdetect_filter_deps="gpl"
3029 delogo_filter_deps="gpl"
3030 deshake_filter_select="pixelutils"
3031 drawtext_filter_deps="libfreetype"
3032 ebur128_filter_deps="gpl"
3033 eq_filter_deps="gpl"
3034 fftfilt_filter_deps="avcodec"
3035 fftfilt_filter_select="rdft"
3036 find_rect_filter_deps="avcodec avformat gpl"
3037 firequalizer_filter_deps="avcodec"
3038 firequalizer_filter_select="rdft"
3039 flite_filter_deps="libflite"
3040 framerate_filter_select="pixelutils"
3041 frei0r_filter_deps="frei0r dlopen"
3042 frei0r_src_filter_deps="frei0r dlopen"
3043 fspp_filter_deps="gpl"
3044 geq_filter_deps="gpl"
3045 histeq_filter_deps="gpl"
3046 hqdn3d_filter_deps="gpl"
3047 interlace_filter_deps="gpl"
3048 kerndeint_filter_deps="gpl"
3049 ladspa_filter_deps="ladspa dlopen"
3050 loudnorm_filter_deps="libebur128"
3051 mcdeint_filter_deps="avcodec gpl"
3052 movie_filter_deps="avcodec avformat"
3053 mpdecimate_filter_deps="gpl"
3054 mpdecimate_filter_select="pixelutils"
3055 mptestsrc_filter_deps="gpl"
3056 negate_filter_deps="lut_filter"
3057 nnedi_filter_deps="gpl"
3058 ocr_filter_deps="libtesseract"
3059 ocv_filter_deps="libopencv"
3060 owdenoise_filter_deps="gpl"
3061 pan_filter_deps="swresample"
3062 perspective_filter_deps="gpl"
3063 phase_filter_deps="gpl"
3064 pp7_filter_deps="gpl"
3065 pp_filter_deps="gpl postproc"
3066 pullup_filter_deps="gpl"
3067 removelogo_filter_deps="avcodec avformat swscale"
3068 repeatfields_filter_deps="gpl"
3069 resample_filter_deps="avresample"
3070 rubberband_filter_deps="librubberband"
3071 sab_filter_deps="gpl swscale"
3072 scale2ref_filter_deps="swscale"
3073 scale_filter_deps="swscale"
3074 select_filter_select="pixelutils"
3075 showcqt_filter_deps="avcodec avformat swscale"
3076 showcqt_filter_select="fft"
3077 showfreqs_filter_deps="avcodec"
3078 showfreqs_filter_select="fft"
3079 showspectrum_filter_deps="avcodec"
3080 showspectrum_filter_select="fft"
3081 showspectrumpic_filter_deps="avcodec"
3082 showspectrumpic_filter_select="fft"
3083 smartblur_filter_deps="gpl swscale"
3084 sofalizer_filter_deps="netcdf avcodec"
3085 sofalizer_filter_select="fft"
3086 spectrumsynth_filter_deps="avcodec"
3087 spectrumsynth_filter_select="fft"
3088 spp_filter_deps="gpl avcodec"
3089 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3090 stereo3d_filter_deps="gpl"
3091 subtitles_filter_deps="avformat avcodec libass"
3092 super2xsai_filter_deps="gpl"
3093 pixfmts_super2xsai_test_deps="super2xsai_filter"
3094 tinterlace_filter_deps="gpl"
3095 tinterlace_merge_test_deps="tinterlace_filter"
3096 tinterlace_pad_test_deps="tinterlace_filter"
3097 uspp_filter_deps="gpl avcodec"
3098 vaguedenoiser_filter_deps="gpl"
3099 vidstabdetect_filter_deps="libvidstab"
3100 vidstabtransform_filter_deps="libvidstab"
3101 zmq_filter_deps="libzmq"
3102 zoompan_filter_deps="swscale"
3103 zscale_filter_deps="libzimg"
3104 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3105
3106 # examples
3107 avcodec_example_deps="avcodec avutil"
3108 avio_dir_cmd="avformat avutil"
3109 avio_reading="avformat avcodec avutil"
3110 decoding_encoding_example_deps="avcodec avformat avutil"
3111 demuxing_decoding_example_deps="avcodec avformat avutil"
3112 extract_mvs_example_deps="avcodec avformat avutil"
3113 filter_audio_example_deps="avfilter avutil"
3114 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3115 filtering_video_example_deps="avfilter avcodec avformat avutil"
3116 metadata_example_deps="avformat avutil"
3117 muxing_example_deps="avcodec avformat avutil swscale"
3118 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3119 remuxing_example_deps="avcodec avformat avutil"
3120 resampling_audio_example_deps="avutil swresample"
3121 scaling_video_example_deps="avutil swscale"
3122 transcode_aac_example_deps="avcodec avformat swresample"
3123 transcoding_example_deps="avfilter avcodec avformat avutil"
3124
3125 # libraries, in linking order
3126 avcodec_deps="avutil"
3127 avdevice_deps="avformat avcodec avutil"
3128 avfilter_deps="avutil"
3129 avformat_deps="avcodec avutil"
3130 avresample_deps="avutil"
3131 postproc_deps="avutil gpl"
3132 swresample_deps="avutil"
3133 swscale_deps="avutil"
3134
3135 # programs
3136 ffmpeg_deps="avcodec avfilter avformat swresample"
3137 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3138                null_filter
3139                setpts_filter trim_filter"
3140 ffplay_deps="avcodec avformat swscale swresample sdl"
3141 ffplay_libs='$sdl_libs'
3142 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3143 ffprobe_deps="avcodec avformat"
3144 ffserver_deps="avformat fork sarestart"
3145 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3146
3147 # documentation
3148 podpages_deps="perl"
3149 manpages_deps="perl pod2man"
3150 htmlpages_deps="perl"
3151 htmlpages_deps_any="makeinfo_html texi2html"
3152 txtpages_deps="perl makeinfo"
3153 doc_deps_any="manpages htmlpages podpages txtpages"
3154
3155 # default parameters
3156
3157 logfile="config.log"
3158
3159 # installation paths
3160 prefix_default="/usr/local"
3161 bindir_default='${prefix}/bin'
3162 datadir_default='${prefix}/share/ffmpeg'
3163 docdir_default='${prefix}/share/doc/ffmpeg'
3164 incdir_default='${prefix}/include'
3165 libdir_default='${prefix}/lib'
3166 mandir_default='${prefix}/share/man'
3167
3168 # toolchain
3169 ar_default="ar"
3170 cc_default="gcc"
3171 cxx_default="g++"
3172 host_cc_default="gcc"
3173 cp_f="cp -f"
3174 doxygen_default="doxygen"
3175 install="install"
3176 ln_s_default="ln -s -f"
3177 nm_default="nm -g"
3178 objformat="elf"
3179 pkg_config_default=pkg-config
3180 ranlib_default="ranlib"
3181 strip_default="strip"
3182 version_script='--version-script'
3183 yasmexe_default="yasm"
3184 windres_default="windres"
3185
3186 # OS
3187 target_os_default=$(tolower $(uname -s))
3188 host_os=$target_os_default
3189
3190 # machine
3191 if test "$target_os_default" = aix; then
3192     arch_default=$(uname -p)
3193     strip_default="strip -X32_64"
3194 else
3195     arch_default=$(uname -m)
3196 fi
3197 cpu="generic"
3198 intrinsics="none"
3199
3200 # configurable options
3201 enable $PROGRAM_LIST
3202 enable $DOCUMENT_LIST
3203 enable $EXAMPLE_LIST
3204 enable $(filter_out avresample $LIBRARY_LIST)
3205 enable stripping
3206
3207 enable asm
3208 enable debug
3209 enable doc
3210 enable faan faandct faanidct
3211 enable optimizations
3212 enable runtime_cpudetect
3213 enable safe_bitstream_reader
3214 enable static
3215 enable swscale_alpha
3216 enable valgrind_backtrace
3217
3218 sws_max_filter_size_default=256
3219 set_default sws_max_filter_size
3220
3221 # Enable platform codecs by default.
3222 enable audiotoolbox
3223
3224 # Enable hwaccels by default.
3225 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3226 enable xlib
3227
3228 enable nvenc vda_framework videotoolbox videotoolbox_encoder
3229
3230 # build settings
3231 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3232 LIBPREF="lib"
3233 LIBSUF=".a"
3234 FULLNAME='$(NAME)$(BUILDSUF)'
3235 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3236 SLIBPREF="lib"
3237 SLIBSUF=".so"
3238 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3239 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3240 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3241 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3242 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3243 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3244 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3245
3246 asflags_filter=echo
3247 cflags_filter=echo
3248 ldflags_filter=echo
3249
3250 AS_C='-c'
3251 AS_O='-o $@'
3252 CC_C='-c'
3253 CC_E='-E -o $@'
3254 CC_O='-o $@'
3255 CXX_C='-c'
3256 CXX_O='-o $@'
3257 OBJCC_C='-c'
3258 OBJCC_E='-E -o $@'
3259 OBJCC_O='-o $@'
3260 LD_O='-o $@'
3261 LD_LIB='-l%'
3262 LD_PATH='-L'
3263 HOSTCC_C='-c'
3264 HOSTCC_E='-E -o $@'
3265 HOSTCC_O='-o $@'
3266 HOSTLD_O='-o $@'
3267
3268 host_libs='-lm'
3269 host_cflags_filter=echo
3270 host_ldflags_filter=echo
3271
3272 target_path='$(CURDIR)'
3273
3274 # since the object filename is not given with the -MM flag, the compiler
3275 # is only able to print the basename, and we must add the path ourselves
3276 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3277 DEPFLAGS='-MM'
3278
3279 # find source path
3280 if test -f configure; then
3281     source_path=.
3282 else
3283     source_path=$(cd $(dirname "$0"); pwd)
3284     case "$source_path" in
3285         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3286     esac
3287     test -e "$source_path/config.h" &&
3288         die "Out of tree builds are impossible with config.h in source dir."
3289 fi
3290
3291 for v in "$@"; do
3292     r=${v#*=}
3293     l=${v%"$r"}
3294     r=$(sh_quote "$r")
3295     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3296 done
3297
3298 find_things(){
3299     thing=$1
3300     pattern=$2
3301     file=$source_path/$3
3302     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3303 }
3304
3305 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3306 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3307 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3308 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3309 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3310 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3311 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3312 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3313 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3314
3315 find_things_extern(){
3316     thing=$1
3317     pattern=$2
3318     file=$source_path/$3
3319     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3320 }
3321
3322 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3323 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3324
3325 ALL_COMPONENTS="
3326     $BSF_LIST
3327     $DECODER_LIST
3328     $DEMUXER_LIST
3329     $ENCODER_LIST
3330     $FILTER_LIST
3331     $HWACCEL_LIST
3332     $INDEV_LIST
3333     $MUXER_LIST
3334     $OUTDEV_LIST
3335     $PARSER_LIST
3336     $PROTOCOL_LIST
3337 "
3338
3339 for n in $COMPONENT_LIST; do
3340     v=$(toupper ${n%s})_LIST
3341     eval enable \$$v
3342     eval ${n}_if_any="\$$v"
3343 done
3344
3345 enable $ARCH_EXT_LIST
3346
3347 die_unknown(){
3348     echo "Unknown option \"$1\"."
3349     echo "See $0 --help for available options."
3350     exit 1
3351 }
3352
3353 print_in_columns() {
3354     cols=$(expr $ncols / 24)
3355     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3356 }
3357
3358 show_list() {
3359     suffix=_$1
3360     shift
3361     echo $* | sed s/$suffix//g | print_in_columns
3362     exit 0
3363 }
3364
3365 rand_list(){
3366     IFS=', '
3367     set -- $*
3368     unset IFS
3369     for thing; do
3370         comp=${thing%:*}
3371         prob=${thing#$comp}
3372         prob=${prob#:}
3373         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3374         echo "prob ${prob:-0.5}"
3375         printf '%s\n' $comp
3376     done
3377 }
3378
3379 do_random(){
3380     action=$1
3381     shift
3382     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3383     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3384 }
3385
3386 for opt do
3387     optval="${opt#*=}"
3388     case "$opt" in
3389         --extra-ldflags=*)
3390             add_ldflags $optval
3391         ;;
3392         --extra-ldexeflags=*)
3393             add_ldexeflags $optval
3394         ;;
3395         --extra-ldlibflags=*)
3396             add_ldlibflags $optval
3397         ;;
3398         --extra-libs=*)
3399             add_extralibs $optval
3400         ;;
3401         --disable-devices)
3402             disable $INDEV_LIST $OUTDEV_LIST
3403         ;;
3404         --enable-debug=*)
3405             debuglevel="$optval"
3406         ;;
3407         --disable-programs)
3408             disable $PROGRAM_LIST
3409         ;;
3410         --disable-everything)
3411             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3412         ;;
3413         --disable-all)
3414             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3415             disable $LIBRARY_LIST $PROGRAM_LIST doc
3416             enable avutil
3417         ;;
3418         --enable-random|--disable-random)
3419             action=${opt%%-random}
3420             do_random ${action#--} $COMPONENT_LIST
3421         ;;
3422         --enable-random=*|--disable-random=*)
3423             action=${opt%%-random=*}
3424             do_random ${action#--} $optval
3425         ;;
3426         --enable-*=*|--disable-*=*)
3427             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3428             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3429             eval list=\$$(toupper $thing)_LIST
3430             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3431             list=$(filter "$name" $list)
3432             [ "$list" = "" ] && warn "Option $opt did not match anything"
3433             $action $list
3434         ;;
3435         --enable-?*|--disable-?*)
3436             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3437             if is_in $option $COMPONENT_LIST; then
3438                 test $action = disable && action=unset
3439                 eval $action \$$(toupper ${option%s})_LIST
3440             elif is_in $option $CMDLINE_SELECT; then
3441                 $action $option
3442             else
3443                 die_unknown $opt
3444             fi
3445         ;;
3446         --list-*)
3447             NAME="${opt#--list-}"
3448             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3449             NAME=${NAME%s}
3450             eval show_list $NAME \$$(toupper $NAME)_LIST
3451         ;;
3452         --help|-h) show_help
3453         ;;
3454         --fatal-warnings) enable fatal_warnings
3455         ;;
3456         *)
3457             optname="${opt%%=*}"
3458             optname="${optname#--}"
3459             optname=$(echo "$optname" | sed 's/-/_/g')
3460             if is_in $optname $CMDLINE_SET; then
3461                 eval $optname='$optval'
3462             elif is_in $optname $CMDLINE_APPEND; then
3463                 append $optname "$optval"
3464             else
3465                 die_unknown $opt
3466             fi
3467         ;;
3468     esac
3469 done
3470
3471 for e in $env; do
3472     eval "export $e"
3473 done
3474
3475 disabled logging && logfile=/dev/null
3476
3477 # Disable all the library-specific components if the library itself
3478 # is disabled, see AVCODEC_LIST and following _LIST variables.
3479
3480 disable_components(){
3481     disabled ${1} && disable $(
3482         eval components="\$$(toupper ${1})_COMPONENTS"
3483         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3484     )
3485 }
3486
3487 map 'disable_components $v' $LIBRARY_LIST
3488
3489 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3490 set >> $logfile
3491
3492 test -n "$valgrind" && toolchain="valgrind-memcheck"
3493
3494 case "$toolchain" in
3495     *-asan)
3496         cc_default="${toolchain%-asan}"
3497         add_cflags  -fsanitize=address
3498         add_ldflags -fsanitize=address
3499     ;;
3500     *-msan)
3501         cc_default="${toolchain%-msan}"
3502         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3503         add_ldflags -fsanitize=memory
3504     ;;
3505     *-tsan)
3506         cc_default="${toolchain%-tsan}"
3507         add_cflags  -fsanitize=thread -pie
3508         add_ldflags -fsanitize=thread -pie
3509         case "$toolchain" in
3510             gcc-tsan)
3511                 add_cflags  -fPIC
3512                 add_ldflags -fPIC
3513                 ;;
3514         esac
3515     ;;
3516     *-usan)
3517         cc_default="${toolchain%-usan}"
3518         add_cflags  -fsanitize=undefined
3519         add_ldflags -fsanitize=undefined
3520     ;;
3521     valgrind-*)
3522         target_exec_default="valgrind"
3523         case "$toolchain" in
3524             valgrind-massif)
3525                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3526                 ;;
3527             valgrind-memcheck)
3528                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3529                 ;;
3530         esac
3531     ;;
3532     msvc)
3533         # Check whether the current MSVC version needs the C99 converter.
3534         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3535         # support enough of C99 to build ffmpeg. Default to the new
3536         # behaviour if the regexp was unable to match anything, since this
3537         # successfully parses the version number of existing supported
3538         # versions that require the converter (MSVC 2010 and 2012).
3539         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3540         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3541             cc_default="cl"
3542         else
3543             cc_default="c99wrap cl"
3544         fi
3545         ld_default="$source_path/compat/windows/mslink"
3546         nm_default="dumpbin -symbols"
3547         ar_default="lib"
3548         case "$arch" in
3549         arm*)
3550             as_default="armasm"
3551             ;;
3552         esac
3553         target_os_default="win32"
3554         # Use a relative path for TMPDIR. This makes sure all the
3555         # ffconf temp files are written with a relative path, avoiding
3556         # issues with msys/win32 path conversion for MSVC parameters
3557         # such as -Fo<file> or -out:<file>.
3558         TMPDIR=.
3559     ;;
3560     icl)
3561         cc_default="icl"
3562         ld_default="xilink"
3563         nm_default="dumpbin -symbols"
3564         ar_default="xilib"
3565         target_os_default="win32"
3566         TMPDIR=.
3567     ;;
3568     gcov)
3569         add_cflags  -fprofile-arcs -ftest-coverage
3570         add_ldflags -fprofile-arcs -ftest-coverage
3571     ;;
3572     llvm-cov)
3573         add_cflags -fprofile-arcs -ftest-coverage
3574         add_ldflags --coverage
3575     ;;
3576     hardened)
3577         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3578         add_cflags   -fno-strict-overflow -fstack-protector-all
3579         add_ldflags  -Wl,-z,relro -Wl,-z,now
3580     ;;
3581     ?*)
3582         die "Unknown toolchain $toolchain"
3583     ;;
3584 esac
3585
3586 test -n "$cross_prefix" && enable cross_compile
3587
3588 if enabled cross_compile; then
3589     test -n "$arch" && test -n "$target_os" ||
3590         die "Must specify target arch and OS when cross-compiling"
3591 fi
3592
3593 ar_default="${cross_prefix}${ar_default}"
3594 cc_default="${cross_prefix}${cc_default}"
3595 cxx_default="${cross_prefix}${cxx_default}"
3596 nm_default="${cross_prefix}${nm_default}"
3597 pkg_config_default="${cross_prefix}${pkg_config_default}"
3598 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3599     ranlib_default="${cross_prefix}${ranlib_default} -D"
3600 else
3601     ranlib_default="${cross_prefix}${ranlib_default}"
3602 fi
3603 strip_default="${cross_prefix}${strip_default}"
3604 windres_default="${cross_prefix}${windres_default}"
3605
3606 sysinclude_default="${sysroot}/usr/include"
3607
3608 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3609     target_exec target_os yasmexe
3610 enabled cross_compile || host_cc_default=$cc
3611 set_default host_cc
3612
3613 pkg_config_fail_message=""
3614 if ! $pkg_config --version >/dev/null 2>&1; then
3615     warn "$pkg_config not found, library detection may fail."
3616     pkg_config=false
3617 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3618     pkg_config_fail_message="
3619 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3620 fi
3621
3622 if test $doxygen != $doxygen_default && \
3623   ! $doxygen --version >/dev/null 2>&1; then
3624     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3625 fi
3626
3627 exesuf() {
3628     case $1 in
3629         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3630     esac
3631 }
3632
3633 EXESUF=$(exesuf $target_os)
3634 HOSTEXESUF=$(exesuf $host_os)
3635
3636 # set temporary file name
3637 : ${TMPDIR:=$TEMPDIR}
3638 : ${TMPDIR:=$TMP}
3639 : ${TMPDIR:=/tmp}
3640
3641 if [ -n "$tempprefix" ] ; then
3642     mktemp(){
3643         echo $tempprefix.${HOSTNAME}.${UID}
3644     }
3645 elif ! check_cmd mktemp -u XXXXXX; then
3646     # simple replacement for missing mktemp
3647     # NOT SAFE FOR GENERAL USE
3648     mktemp(){
3649         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3650     }
3651 fi
3652
3653 tmpfile(){
3654     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3655         (set -C; exec > $tmp) 2>/dev/null ||
3656         die "Unable to create temporary file in $TMPDIR."
3657     append TMPFILES $tmp
3658     eval $1=$tmp
3659 }
3660
3661 trap 'rm -f -- $TMPFILES' EXIT
3662
3663 tmpfile TMPASM .asm
3664 tmpfile TMPC   .c
3665 tmpfile TMPCPP .cpp
3666 tmpfile TMPE   $EXESUF
3667 tmpfile TMPH   .h
3668 tmpfile TMPM   .m
3669 tmpfile TMPO   .o
3670 tmpfile TMPS   .S
3671 tmpfile TMPSH  .sh
3672 tmpfile TMPV   .ver
3673
3674 unset -f mktemp
3675
3676 chmod +x $TMPE
3677
3678 # make sure we can execute files in $TMPDIR
3679 cat > $TMPSH 2>> $logfile <<EOF
3680 #! /bin/sh
3681 EOF
3682 chmod +x $TMPSH >> $logfile 2>&1
3683 if ! $TMPSH >> $logfile 2>&1; then
3684     cat <<EOF
3685 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3686 variable to another directory and make sure that it is not mounted noexec.
3687 EOF
3688     die "Sanity test failed."
3689 fi
3690
3691 armasm_flags(){
3692     for flag; do
3693         case $flag in
3694             # Filter out MSVC cl.exe options from cflags that shouldn't
3695             # be passed to gas-preprocessor
3696             -M[TD]*)                                            ;;
3697             *)                  echo $flag                      ;;
3698         esac
3699    done
3700 }
3701
3702 ccc_flags(){
3703     for flag; do
3704         case $flag in
3705             -std=c99)           echo -c99                       ;;
3706             -mcpu=*)            echo -arch ${flag#*=}           ;;
3707             -mieee)             echo -ieee                      ;;
3708             -O*|-fast)          echo $flag                      ;;
3709             -fno-math-errno)    echo -assume nomath_errno       ;;
3710             -g)                 echo -g3                        ;;
3711             -Wall)              echo -msg_enable level2         ;;
3712             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3713             -Wl,*)              echo $flag                      ;;
3714             -f*|-W*)                                            ;;
3715             *)                  echo $flag                      ;;
3716         esac
3717    done
3718 }
3719
3720 cparser_flags(){
3721     for flag; do
3722         case $flag in
3723             -Wno-switch)             echo -Wno-switch-enum ;;
3724             -Wno-format-zero-length) ;;
3725             -Wdisabled-optimization) ;;
3726             -Wno-pointer-sign)       echo -Wno-other ;;
3727             *)                       echo $flag ;;
3728         esac
3729     done
3730 }
3731
3732 msvc_common_flags(){
3733     for flag; do
3734         case $flag in
3735             # In addition to specifying certain flags under the compiler
3736             # specific filters, they must be specified here as well or else the
3737             # generic catch all at the bottom will print the original flag.
3738             -Wall)                ;;
3739             -std=c99)             ;;
3740             # Common flags
3741             -fomit-frame-pointer) ;;
3742             -g)                   echo -Z7 ;;
3743             -fno-math-errno)      ;;
3744             -fno-common)          ;;
3745             -fno-signed-zeros)    ;;
3746             -fPIC)                ;;
3747             -mthumb)              ;;
3748             -march=*)             ;;
3749             -lz)                  echo zlib.lib ;;
3750             -lavifil32)           echo vfw32.lib ;;
3751             -lavicap32)           echo vfw32.lib user32.lib ;;
3752             -lx264)               echo libx264.lib ;;
3753             -l*)                  echo ${flag#-l}.lib ;;
3754             -LARGEADDRESSAWARE)   echo $flag ;;
3755             -L*)                  echo -libpath:${flag#-L} ;;
3756             *)                    echo $flag ;;
3757         esac
3758     done
3759 }
3760
3761 msvc_flags(){
3762     msvc_common_flags "$@"
3763     for flag; do
3764         case $flag in
3765             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3766                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3767                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3768                                        -wd4307 \
3769                                        -wd4273 -wd4554 -wd4701 ;;
3770         esac
3771     done
3772 }
3773
3774 icl_flags(){
3775     msvc_common_flags "$@"
3776     for flag; do
3777         case $flag in
3778             # Despite what Intel's documentation says -Wall, which is supported
3779             # on Windows, does enable remarks so disable them here.
3780             -Wall)                echo $flag -Qdiag-disable:remark ;;
3781             -std=c99)             echo -Qstd=c99 ;;
3782             -flto)                echo -ipo ;;
3783         esac
3784     done
3785 }
3786
3787 icc_flags(){
3788     for flag; do
3789         case $flag in
3790             -flto)                echo -ipo ;;
3791             *)                    echo $flag ;;
3792         esac
3793     done
3794 }
3795
3796 pgi_flags(){
3797     for flag; do
3798         case $flag in
3799             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3800             -fomit-frame-pointer) echo -Mnoframe ;;
3801             -g)                   echo -gopt ;;
3802             *)                    echo $flag ;;
3803         esac
3804     done
3805 }
3806
3807 suncc_flags(){
3808     for flag; do
3809         case $flag in
3810             -march=*|-mcpu=*)
3811                 case "${flag#*=}" in
3812                     native)                   echo -xtarget=native       ;;
3813                     v9|niagara)               echo -xarch=sparc          ;;
3814                     ultrasparc)               echo -xarch=sparcvis       ;;
3815                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3816                     i586|pentium)             echo -xchip=pentium        ;;
3817                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3818                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3819                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3820                     pentium4*)          echo -xtarget=pentium4           ;;
3821                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3822                     *-sse3)             echo -xarch=sse3                 ;;
3823                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3824                     bonnell)                   echo -xarch=ssse3         ;;
3825                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3826                     westmere)                  echo -xtarget=westmere    ;;
3827                     silvermont)                echo -xarch=sse4_2        ;;
3828                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3829                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3830                                                echo -xarch=avx           ;;
3831                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3832                     btver1)                    echo -xarch=amdsse4a      ;;
3833                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3834                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3835                     k8|opteron|athlon64|athlon-fx)
3836                                                echo -xarch=sse2a         ;;
3837                     athlon*)                   echo -xarch=pentium_proa  ;;
3838                 esac
3839                 ;;
3840             -std=c99)             echo -xc99              ;;
3841             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3842             -fPIC)                echo -KPIC -xcode=pic32 ;;
3843             -W*,*)                echo $flag              ;;
3844             -f*-*|-W*|-mimpure-text)                      ;;
3845             -shared)              echo -G                 ;;
3846             *)                    echo $flag              ;;
3847         esac
3848     done
3849 }
3850
3851 tms470_flags(){
3852     for flag; do
3853         case $flag in
3854             -march=*|-mcpu=*)
3855                 case "${flag#*=}" in
3856                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3857                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3858                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3859                     armv6*|arm11*)          echo -mv=6   ;;
3860                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3861                                             echo -mv=5e  ;;
3862                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3863                 esac
3864                 ;;
3865             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3866             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3867             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3868             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3869             -msoft-float)   echo --float_support=vfplib       ;;
3870             -O[0-3]|-mf=*)  echo $flag                        ;;
3871             -g)             echo -g -mn                       ;;
3872             -pds=*)         echo $flag                        ;;
3873             -D*|-I*)        echo $flag                        ;;
3874             --gcc|--abi=*)  echo $flag                        ;;
3875             -me)            echo $flag                        ;;
3876         esac
3877     done
3878 }
3879
3880 probe_cc(){
3881     pfx=$1
3882     _cc=$2
3883     first=$3
3884
3885     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3886     unset _ld_o _ldflags _ld_lib _ld_path
3887     unset _depflags _DEPCMD _DEPFLAGS
3888     _flags_filter=echo
3889
3890     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3891         true # no-op to avoid reading stdin in following checks
3892     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3893         _type=llvm_gcc
3894         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3895         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3896         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3897         _cflags_speed='-O3'
3898         _cflags_size='-Os'
3899     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3900         _type=gcc
3901         gcc_version=$($_cc --version | head -n1)
3902         gcc_basever=$($_cc -dumpversion)
3903         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3904         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3905         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3906         case $gcc_basever in
3907             2) ;;
3908             2.*) ;;
3909             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3910         esac
3911         if [ "$first" = true ]; then
3912             case $gcc_basever in
3913                 4.2*)
3914                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3915             esac
3916         fi
3917         _cflags_speed='-O3'
3918         _cflags_size='-Os'
3919     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3920         _type=icc
3921         _ident=$($_cc --version | head -n1)
3922         _depflags='-MMD'
3923         _cflags_speed='-O3'
3924         _cflags_size='-Os'
3925         _cflags_noopt='-O1'
3926         _flags_filter=icc_flags
3927     elif $_cc -v 2>&1 | grep -q xlc; then
3928         _type=xlc
3929         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3930         _cflags_speed='-O5'
3931         _cflags_size='-O5 -qcompact'
3932     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3933         _type=ccc
3934         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3935         _DEPFLAGS='-M'
3936         _cflags_speed='-fast'
3937         _cflags_size='-O1'
3938         _flags_filter=ccc_flags
3939     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3940         test -d "$sysroot" || die "No valid sysroot specified."
3941         _type=armcc
3942         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3943         armcc_conf="$PWD/armcc.conf"
3944         $_cc --arm_linux_configure                 \
3945              --arm_linux_config_file="$armcc_conf" \
3946              --configure_sysroot="$sysroot"        \
3947              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3948              die "Error creating armcc configuration file."
3949         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3950         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3951         as_default="${cross_prefix}gcc"
3952         _depflags='-MMD'
3953         _cflags_speed='-O3'
3954         _cflags_size='-Os'
3955     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3956         _type=tms470
3957         _ident=$($_cc -version | head -n1 | tr -s ' ')
3958         _flags='--gcc --abi=eabi -me'
3959         _cc_e='-ppl -fe=$@'
3960         _cc_o='-fe=$@'
3961         _depflags='-ppa -ppd=$(@:.o=.d)'
3962         _cflags_speed='-O3 -mf=5'
3963         _cflags_size='-O3 -mf=2'
3964         _flags_filter=tms470_flags
3965     elif $_cc -v 2>&1 | grep -q clang; then
3966         _type=clang
3967         _ident=$($_cc --version 2>/dev/null | head -n1)
3968         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3969         _cflags_speed='-O3'
3970         _cflags_size='-Os'
3971     elif $_cc -V 2>&1 | grep -q Sun; then
3972         _type=suncc
3973         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3974         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3975         _DEPFLAGS='-xM1 -xc99'
3976         _ldflags='-std=c99'
3977         _cflags_speed='-O5'
3978         _cflags_size='-O5 -xspace'
3979         _flags_filter=suncc_flags
3980     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3981         _type=pathscale
3982         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3983         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3984         _cflags_speed='-O2'
3985         _cflags_size='-Os'
3986         _flags_filter='filter_out -Wdisabled-optimization'
3987     elif $_cc -v 2>&1 | grep -q Open64; then
3988         _type=open64
3989         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3990         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3991         _cflags_speed='-O2'
3992         _cflags_size='-Os'
3993         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3994     elif $_cc -V 2>&1 | grep -q Portland; then
3995         _type=pgi
3996         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3997         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3998         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3999         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4000         _cflags_noopt="-O"
4001         _flags_filter=pgi_flags
4002     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4003         _type=armasm
4004         _ident=$($_cc | head -n1)
4005         # 4509: "This form of conditional instruction is deprecated"
4006         _flags="-nologo -ignore 4509"
4007         _flags_filter=armasm_flags
4008     elif $_cc 2>&1 | grep -q Intel; then
4009         _type=icl
4010         _ident=$($_cc 2>&1 | head -n1)
4011         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4012         # Not only is O3 broken on 13.x+ but it is slower on all previous
4013         # versions (tested) as well.
4014         _cflags_speed="-O2"
4015         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4016         if $_cc 2>&1 | grep -q Linker; then
4017             _ld_o='-out:$@'
4018         else
4019             _ld_o='-Fe$@'
4020         fi
4021         _cc_o='-Fo$@'
4022         _cc_e='-P'
4023         _flags_filter=icl_flags
4024         _ld_lib='lib%.a'
4025         _ld_path='-libpath:'
4026         # -Qdiag-error to make icl error when seeing certain unknown arguments
4027         _flags='-nologo -Qdiag-error:4044,10157'
4028         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4029         # with MSVC which enables it by default.
4030         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4031         disable stripping
4032     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4033         _type=msvc
4034         _ident=$($_cc 2>&1 | head -n1)
4035         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4036         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4037         _cflags_speed="-O2"
4038         _cflags_size="-O1"
4039         if $_cc -nologo- 2>&1 | grep -q Linker; then
4040             _ld_o='-out:$@'
4041         else
4042             _ld_o='-Fe$@'
4043         fi
4044         _cc_o='-Fo$@'
4045         _cc_e='-P -Fi$@'
4046         _flags_filter=msvc_flags
4047         _ld_lib='lib%.a'
4048         _ld_path='-libpath:'
4049         _flags='-nologo'
4050         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4051         disable stripping
4052     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4053         _type=cparser
4054         _ident=$($_cc --version | head -n1)
4055         _depflags='-MMD'
4056         _cflags_speed='-O4'
4057         _cflags_size='-O2'
4058         _flags_filter=cparser_flags
4059     fi
4060
4061     eval ${pfx}_type=\$_type
4062     eval ${pfx}_ident=\$_ident
4063 }
4064
4065 set_ccvars(){
4066     eval ${1}_C=\${_cc_c-\${${1}_C}}
4067     eval ${1}_E=\${_cc_e-\${${1}_E}}
4068     eval ${1}_O=\${_cc_o-\${${1}_O}}
4069
4070     if [ -n "$_depflags" ]; then
4071         eval ${1}_DEPFLAGS=\$_depflags
4072     else
4073         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4074         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4075         eval DEP${1}FLAGS=\$_flags
4076     fi
4077 }
4078
4079 probe_cc cc "$cc" "true"
4080 cflags_filter=$_flags_filter
4081 cflags_speed=$_cflags_speed
4082 cflags_size=$_cflags_size
4083 cflags_noopt=$_cflags_noopt
4084 add_cflags $_flags $_cflags
4085 cc_ldflags=$_ldflags
4086 set_ccvars CC
4087
4088 probe_cc hostcc "$host_cc"
4089 host_cflags_filter=$_flags_filter
4090 add_host_cflags  $_flags $_cflags
4091 set_ccvars HOSTCC
4092
4093 test -n "$cc_type" && enable $cc_type ||
4094     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4095
4096 : ${as_default:=$cc}
4097 : ${objcc_default:=$cc}
4098 : ${dep_cc_default:=$cc}
4099 : ${ld_default:=$cc}
4100 : ${host_ld_default:=$host_cc}
4101 set_default ar as objcc dep_cc ld ln_s host_ld windres
4102
4103 probe_cc as "$as"
4104 asflags_filter=$_flags_filter
4105 add_asflags $_flags $_cflags
4106 set_ccvars AS
4107
4108 probe_cc objcc "$objcc"
4109 objcflags_filter=$_flags_filter
4110 add_objcflags $_flags $_cflags
4111 set_ccvars OBJC
4112
4113 probe_cc ld "$ld"
4114 ldflags_filter=$_flags_filter
4115 add_ldflags $_flags $_ldflags
4116 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4117 LD_O=${_ld_o-$LD_O}
4118 LD_LIB=${_ld_lib-$LD_LIB}
4119 LD_PATH=${_ld_path-$LD_PATH}
4120
4121 probe_cc hostld "$host_ld"
4122 host_ldflags_filter=$_flags_filter
4123 add_host_ldflags $_flags $_ldflags
4124 HOSTLD_O=${_ld_o-$HOSTLD_O}
4125
4126 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4127     probe_cc depcc "$dep_cc"
4128     CCDEP=${_DEPCMD:-$DEPCMD}
4129     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4130     DEPCCFLAGS=$_flags
4131 fi
4132
4133 if $ar 2>&1 | grep -q Microsoft; then
4134     arflags="-nologo"
4135     ar_o='-out:$@'
4136 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4137     arflags="rq"
4138     ar_o='$@'
4139 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4140     arflags='-Xany -r -c'
4141     ar_o='$@'
4142 elif $ar 2>&1 | grep -q "\[D\] "; then
4143     arflags="rcD"
4144     ar_o='$@'
4145 else
4146     arflags="rc"
4147     ar_o='$@'
4148 fi
4149
4150 add_cflags $extra_cflags
4151 add_cxxflags $extra_cxxflags
4152 add_objcflags $extra_objcflags
4153 add_asflags $extra_cflags
4154
4155 if test -n "$sysroot"; then
4156     case "$cc_type" in
4157         gcc|llvm_gcc|clang)
4158             add_cppflags --sysroot="$sysroot"
4159             add_ldflags --sysroot="$sysroot"
4160 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4161             add_cppflags -isysroot "$sysroot"
4162             add_ldflags -isysroot "$sysroot"
4163         ;;
4164         tms470)
4165             add_cppflags -I"$sysinclude"
4166             add_ldflags  --sysroot="$sysroot"
4167         ;;
4168     esac
4169 fi
4170
4171 if test "$cpu" = host; then
4172     enabled cross_compile &&
4173         die "--cpu=host makes no sense when cross-compiling."
4174
4175     case "$cc_type" in
4176         gcc|llvm_gcc)
4177             check_native(){
4178                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4179                 sed -n "/cc1.*$1=/{
4180                             s/.*$1=\\([^ ]*\\).*/\\1/
4181                             p
4182                             q
4183                         }" $TMPE
4184             }
4185             cpu=$(check_native -march || check_native -mcpu)
4186         ;;
4187         clang)
4188             check_native(){
4189                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4190                 sed -n "/cc1.*-target-cpu /{
4191                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4192                             p
4193                             q
4194                         }" $TMPE
4195             }
4196             cpu=$(check_native -march)
4197         ;;
4198     esac
4199
4200     test "${cpu:-host}" = host &&
4201         die "--cpu=host not supported with compiler $cc"
4202 fi
4203
4204 # Deal with common $arch aliases
4205 case "$arch" in
4206     aarch64|arm64)
4207         arch="aarch64"
4208     ;;
4209     arm*|iPad*|iPhone*)
4210         arch="arm"
4211     ;;
4212     mips*|IP*)
4213         case "$arch" in
4214         *el)
4215             add_cppflags -EL
4216             add_ldflags -EL
4217         ;;
4218         *eb)
4219             add_cppflags -EB
4220             add_ldflags -EB
4221         ;;
4222         esac
4223         arch="mips"
4224     ;;
4225     parisc*|hppa*)
4226         arch="parisc"
4227     ;;
4228     "Power Macintosh"|ppc*|powerpc*)
4229         arch="ppc"
4230     ;;
4231     s390|s390x)
4232         arch="s390"
4233     ;;
4234     sh4|sh)
4235         arch="sh4"
4236     ;;
4237     sun4*|sparc*)
4238         arch="sparc"
4239     ;;
4240     tilegx|tile-gx)
4241         arch="tilegx"
4242     ;;
4243     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4244         arch="x86"
4245     ;;
4246 esac
4247
4248 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4249 enable $arch
4250
4251 # Add processor-specific flags
4252 if enabled aarch64; then
4253
4254     case $cpu in
4255         armv*)
4256             cpuflags="-march=$cpu"
4257         ;;
4258         *)
4259             cpuflags="-mcpu=$cpu"
4260         ;;
4261     esac
4262
4263 elif enabled alpha; then
4264
4265     cpuflags="-mcpu=$cpu"
4266
4267 elif enabled arm; then
4268
4269     check_arm_arch() {
4270         check_cpp_condition stddef.h \
4271             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4272             $cpuflags
4273     }
4274
4275     probe_arm_arch() {
4276         if   check_arm_arch 4;        then echo armv4
4277         elif check_arm_arch 4T;       then echo armv4t
4278         elif check_arm_arch 5;        then echo armv5
4279         elif check_arm_arch 5E;       then echo armv5e
4280         elif check_arm_arch 5T;       then echo armv5t
4281         elif check_arm_arch 5TE;      then echo armv5te
4282         elif check_arm_arch 5TEJ;     then echo armv5te
4283         elif check_arm_arch 6;        then echo armv6
4284         elif check_arm_arch 6J;       then echo armv6j
4285         elif check_arm_arch 6K;       then echo armv6k
4286         elif check_arm_arch 6Z;       then echo armv6z
4287         elif check_arm_arch 6ZK;      then echo armv6zk
4288         elif check_arm_arch 6T2;      then echo armv6t2
4289         elif check_arm_arch 7;        then echo armv7
4290         elif check_arm_arch 7A  7_A;  then echo armv7-a
4291         elif check_arm_arch 7S;       then echo armv7-a
4292         elif check_arm_arch 7R  7_R;  then echo armv7-r
4293         elif check_arm_arch 7M  7_M;  then echo armv7-m
4294         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4295         elif check_arm_arch 8A  8_A;  then echo armv8-a
4296         fi
4297     }
4298
4299     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4300
4301     case $cpu in
4302         armv*)
4303             cpuflags="-march=$cpu"
4304             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4305         ;;
4306         *)
4307             cpuflags="-mcpu=$cpu"
4308             case $cpu in
4309                 cortex-a*)                               subarch=armv7a  ;;
4310                 cortex-r*)                               subarch=armv7r  ;;
4311                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4312                 arm11*)                                  subarch=armv6   ;;
4313                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4314                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4315                 *)                             subarch=$(probe_arm_arch) ;;
4316             esac
4317         ;;
4318     esac
4319
4320     case "$subarch" in
4321         armv5t*)    enable fast_clz                ;;
4322         armv[6-8]*)
4323             enable fast_clz
4324             disabled fast_unaligned || enable fast_unaligned
4325             ;;
4326     esac
4327
4328 elif enabled avr32; then
4329
4330     case $cpu in
4331         ap7[02]0[0-2])
4332             subarch="avr32_ap"
4333             cpuflags="-mpart=$cpu"
4334         ;;
4335         ap)
4336             subarch="avr32_ap"
4337             cpuflags="-march=$cpu"
4338         ;;
4339         uc3[ab]*)
4340             subarch="avr32_uc"
4341             cpuflags="-mcpu=$cpu"
4342         ;;
4343         uc)
4344             subarch="avr32_uc"
4345             cpuflags="-march=$cpu"
4346         ;;
4347     esac
4348
4349 elif enabled bfin; then
4350
4351     cpuflags="-mcpu=$cpu"
4352
4353 elif enabled mips; then
4354
4355     cpuflags="-march=$cpu"
4356
4357     if [ "$cpu" != "generic" ]; then
4358         disable mips32r2
4359         disable mips32r5
4360         disable mips64r2
4361         disable mips32r6
4362         disable mips64r6
4363         disable loongson2
4364         disable loongson3
4365
4366         case $cpu in
4367             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4368                 enable mips32r2
4369                 disable msa
4370             ;;
4371             p5600|i6400|p6600)
4372                 disable mipsdsp
4373                 disable mipsdspr2
4374             ;;
4375             loongson*)
4376                 enable loongson2
4377                 enable loongson3
4378                 enable local_aligned_8 local_aligned_16 local_aligned_32
4379                 enable simd_align_16
4380                 enable fast_64bit
4381                 enable fast_clz
4382                 enable fast_cmov
4383                 enable fast_unaligned
4384                 disable aligned_stack
4385                 case $cpu in
4386                     loongson3*)
4387                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4388                     ;;
4389                     loongson2e)
4390                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4391                     ;;
4392                     loongson2f)
4393                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4394                     ;;
4395                 esac
4396             ;;
4397             *)
4398                 # Unknown CPU. Disable everything.
4399                 warn "unknown CPU. Disabling all MIPS optimizations."
4400                 disable mipsfpu
4401                 disable mipsdsp
4402                 disable mipsdspr2
4403                 disable msa
4404                 disable mmi
4405             ;;
4406         esac
4407
4408         case $cpu in
4409             24kc)
4410                 disable mipsfpu
4411                 disable mipsdsp
4412                 disable mipsdspr2
4413             ;;
4414             24kf*)
4415                 disable mipsdsp
4416                 disable mipsdspr2
4417             ;;
4418             24kec|34kc|1004kc)
4419                 disable mipsfpu
4420                 disable mipsdspr2
4421             ;;
4422             24kef*|34kf*|1004kf*)
4423                 disable mipsdspr2
4424             ;;
4425             74kc)
4426                 disable mipsfpu
4427             ;;
4428             p5600)
4429                 enable mips32r5
4430                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4431             ;;
4432             i6400)
4433                 enable mips64r6
4434                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4435             ;;
4436             p6600)
4437                 enable mips64r6
4438                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4439             ;;
4440         esac
4441     else
4442         # We do not disable anything. Is up to the user to disable the unwanted features.
4443         warn 'generic cpu selected'
4444     fi
4445
4446 elif enabled ppc; then
4447
4448     disable ldbrx
4449
4450     case $(tolower $cpu) in
4451         601|ppc601|powerpc601)
4452             cpuflags="-mcpu=601"
4453             disable altivec
4454         ;;
4455         603*|ppc603*|powerpc603*)
4456             cpuflags="-mcpu=603"
4457             disable altivec
4458         ;;
4459         604*|ppc604*|powerpc604*)
4460             cpuflags="-mcpu=604"
4461             disable altivec
4462         ;;
4463         g3|75*|ppc75*|powerpc75*)
4464             cpuflags="-mcpu=750"
4465             disable altivec
4466         ;;
4467         g4|745*|ppc745*|powerpc745*)
4468             cpuflags="-mcpu=7450"
4469             disable vsx
4470         ;;
4471         74*|ppc74*|powerpc74*)
4472             cpuflags="-mcpu=7400"
4473             disable vsx
4474         ;;
4475         g5|970|ppc970|powerpc970)
4476             cpuflags="-mcpu=970"
4477             disable vsx
4478         ;;
4479         power[3-6]*)
4480             cpuflags="-mcpu=$cpu"
4481             disable vsx
4482         ;;
4483         power[7-8]*)
4484             cpuflags="-mcpu=$cpu"
4485         ;;
4486         cell)
4487             cpuflags="-mcpu=cell"
4488             enable ldbrx
4489             disable vsx
4490         ;;
4491         e500mc)
4492             cpuflags="-mcpu=e500mc"
4493             disable altivec
4494         ;;
4495         e500v2)
4496             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4497             disable altivec
4498             disable dcbzl
4499         ;;
4500         e500)
4501             cpuflags="-mcpu=8540 -mhard-float"
4502             disable altivec
4503             disable dcbzl
4504         ;;
4505     esac
4506
4507 elif enabled sparc; then
4508
4509     case $cpu in
4510         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4511             cpuflags="-mcpu=$cpu"
4512         ;;
4513         ultrasparc*|niagara[234])
4514             cpuflags="-mcpu=$cpu"
4515         ;;
4516     esac
4517
4518 elif enabled x86; then
4519
4520     case $cpu in
4521         i[345]86|pentium)
4522             cpuflags="-march=$cpu"
4523             disable i686
4524             disable mmx
4525         ;;
4526         # targets that do NOT support nopl and conditional mov (cmov)
4527         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4528             cpuflags="-march=$cpu"
4529             disable i686
4530         ;;
4531         # targets that do support nopl and conditional mov (cmov)
4532         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4533         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4534         |amdfam10|barcelona|b[dt]ver*|znver*)
4535             cpuflags="-march=$cpu"
4536             enable i686
4537             enable fast_cmov
4538         ;;
4539         # targets that do support conditional mov but on which it's slow
4540         pentium4|pentium4m|prescott|nocona)
4541             cpuflags="-march=$cpu"
4542             enable i686
4543             disable fast_cmov
4544         ;;
4545     esac
4546
4547 fi
4548
4549 if [ "$cpu" != generic ]; then
4550     add_cflags  $cpuflags
4551     add_asflags $cpuflags
4552     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4553 fi
4554
4555 # compiler sanity check
4556 check_exec <<EOF
4557 int main(void){ return 0; }
4558 EOF
4559 if test "$?" != 0; then
4560     echo "$cc is unable to create an executable file."
4561     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4562         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4563         echo "Only do this if you know what cross compiling means."
4564     fi
4565     die "C compiler test failed."
4566 fi
4567
4568 add_cppflags -D_ISOC99_SOURCE
4569 add_cxxflags -D__STDC_CONSTANT_MACROS
4570 add_cxxflags -std=c++98
4571 check_cflags -std=c99
4572 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4573 #include <stdlib.h>
4574 EOF
4575 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4576 #include <stdlib.h>
4577 EOF
4578
4579 add_host_cppflags -D_ISOC99_SOURCE
4580 check_host_cflags -std=c99
4581 check_host_cflags -Wall
4582 check_host_cflags -O3
4583
4584 check_64bit(){
4585     arch32=$1
4586     arch64=$2
4587     expr=$3
4588     check_code cc "" "int test[2*($expr) - 1]" &&
4589         subarch=$arch64 || subarch=$arch32
4590 }
4591
4592 case "$arch" in
4593     aarch64|alpha|ia64)
4594         spic=$shared
4595     ;;
4596     mips)
4597         check_64bit mips mips64 '_MIPS_SIM > 1'
4598         spic=$shared
4599     ;;
4600     parisc)
4601         check_64bit parisc parisc64 'sizeof(void *) > 4'
4602         spic=$shared
4603     ;;
4604     ppc)
4605         check_64bit ppc ppc64 'sizeof(void *) > 4'
4606         spic=$shared
4607     ;;
4608     s390)
4609         check_64bit s390 s390x 'sizeof(void *) > 4'
4610         spic=$shared
4611     ;;
4612     sparc)
4613         check_64bit sparc sparc64 'sizeof(void *) > 4'
4614         spic=$shared
4615     ;;
4616     x86)
4617         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4618         # Treat x32 as x64 for now. Note it also needs spic=$shared
4619         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4620             subarch=x86_64
4621         if test "$subarch" = "x86_64"; then
4622             spic=$shared
4623         fi
4624     ;;
4625     ppc)
4626         check_cc <<EOF && subarch="ppc64"
4627         int test[(int)sizeof(char*) - 7];
4628 EOF
4629     ;;
4630 esac
4631
4632 enable $subarch
4633 enabled spic && enable_weak pic
4634
4635 # OS specific
4636 case $target_os in
4637     aix)
4638         SHFLAGS=-shared
4639         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4640         enabled shared && add_ldflags -Wl,-brtl
4641         ;;
4642     android)
4643         disable symver
4644         enable section_data_rel_ro
4645         SLIB_INSTALL_NAME='$(SLIBNAME)'
4646         SLIB_INSTALL_LINKS=
4647         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4648         ;;
4649     haiku)
4650         prefix_default="/boot/common"
4651         network_extralibs="-lnetwork"
4652         host_libs=
4653         ;;
4654     sunos)
4655         SHFLAGS='-shared -Wl,-h,$$(@F)'
4656         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4657         network_extralibs="-lsocket -lnsl"
4658         add_cppflags -D__EXTENSIONS__
4659         # When using suncc to build, the Solaris linker will mark
4660         # an executable with each instruction set encountered by
4661         # the Solaris assembler.  As our libraries contain their own
4662         # guards for processor-specific code, instead suppress
4663         # generation of the HWCAPS ELF section on Solaris x86 only.
4664         enabled_all suncc x86 &&
4665             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4666             add_ldflags -Wl,-M,mapfile
4667         nm_default='nm -P -g'
4668         version_script='-M'
4669         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4670         ;;
4671     netbsd)
4672         disable symver
4673         oss_indev_extralibs="-lossaudio"
4674         oss_outdev_extralibs="-lossaudio"
4675         enabled gcc || check_ldflags -Wl,-zmuldefs
4676         ;;
4677     openbsd|bitrig)
4678         disable symver
4679         SHFLAGS='-shared'
4680         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4681         SLIB_INSTALL_LINKS=
4682         oss_indev_extralibs="-lossaudio"
4683         oss_outdev_extralibs="-lossaudio"
4684         ;;
4685     dragonfly)
4686         disable symver
4687         ;;
4688     freebsd)
4689         ;;
4690     bsd/os)
4691         add_extralibs -lpoll -lgnugetopt
4692         strip="strip -d"
4693         ;;
4694     darwin)
4695         enabled ppc && add_asflags -force_cpusubtype_ALL
4696         install_name_dir_default='$(SHLIBDIR)'
4697         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4698         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4699         strip="${strip} -x"
4700         add_ldflags -Wl,-dynamic,-search_paths_first
4701         SLIBSUF=".dylib"
4702         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4703         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4704         objformat="macho"
4705         enabled x86_64 && objformat="macho64"
4706         enabled_any pic shared x86_64 ||
4707             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4708         check_header dispatch/dispatch.h &&
4709             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4710         ;;
4711     msys*)
4712         die "Native MSYS builds are discouraged, please use the MINGW environment."
4713         ;;
4714     mingw32*|mingw64*)
4715         if test $target_os = "mingw32ce"; then
4716             disable network
4717         else
4718             target_os=mingw32
4719         fi
4720         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4721         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4722         LIBTARGET=i386
4723         if enabled x86_64; then
4724             LIBTARGET="i386:x86-64"
4725         elif enabled arm; then
4726             LIBTARGET=arm-wince
4727         fi
4728         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4729         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4730         shlibdir_default="$bindir_default"
4731         SLIBPREF=""
4732         SLIBSUF=".dll"
4733         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4734         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4735         dlltool="${cross_prefix}dlltool"
4736         if check_cmd lib.exe -list; then
4737             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4738             if enabled x86_64; then
4739                 LIBTARGET=x64
4740             fi
4741         elif check_cmd $dlltool --version; then
4742             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4743         fi
4744         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4745         SLIB_INSTALL_LINKS=
4746         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4747         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4748         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4749         objformat="win32"
4750         ranlib=:
4751         enable dos_paths
4752         check_ldflags -Wl,--nxcompat,--dynamicbase
4753         # Lets work around some stupidity in binutils.
4754         # ld will strip relocations from executables even though we need them
4755         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4756         # however ld then forgets what the entry point should be (oops) so we
4757         # have to manually (re)set it.
4758         if enabled x86_32; then
4759             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4760         elif enabled x86_64; then
4761             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4762             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4763             # Set image base >4GB for extra entropy with HEASLR
4764             add_ldexeflags -Wl,--image-base,0x140000000
4765             append SHFLAGS -Wl,--image-base,0x180000000
4766         fi
4767         ;;
4768     win32|win64)
4769         disable symver
4770         if enabled shared; then
4771             # Link to the import library instead of the normal static library
4772             # for shared libs.
4773             LD_LIB='%.lib'
4774             # Cannot build both shared and static libs with MSVC or icl.
4775             disable static
4776         fi
4777         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4778         shlibdir_default="$bindir_default"
4779         SLIBPREF=""
4780         SLIBSUF=".dll"
4781         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4782         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4783         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4784         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4785         SLIB_INSTALL_LINKS=
4786         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4787         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4788         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4789         objformat="win32"
4790         ranlib=:
4791         enable dos_paths
4792         ;;
4793     cygwin*)
4794         target_os=cygwin
4795         shlibdir_default="$bindir_default"
4796         SLIBPREF="cyg"
4797         SLIBSUF=".dll"
4798         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4799         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4800         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4801         SLIB_INSTALL_LINKS=
4802         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4803         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4804         objformat="win32"
4805         enable dos_paths
4806         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4807         ;;
4808     *-dos|freedos|opendos)
4809         network_extralibs="-lsocket"
4810         objformat="coff"
4811         enable dos_paths
4812         add_cppflags -U__STRICT_ANSI__
4813         ;;
4814     linux)
4815         enable dv1394
4816         enable section_data_rel_ro
4817         ;;
4818     irix*)
4819         target_os=irix
4820         ranlib="echo ignoring ranlib"
4821         ;;
4822     os/2*)
4823         strip="lxlite -CS"
4824         objformat="aout"
4825         add_cppflags -D_GNU_SOURCE
4826         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4827         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4828         LIBSUF="_s.a"
4829         SLIBPREF=""
4830         SLIBSUF=".dll"
4831         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4832         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4833         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4834             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4835             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4836             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4837             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4838         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4839             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4840         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4841         SLIB_INSTALL_LINKS=
4842         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4843         enable dos_paths
4844         enable_weak os2threads
4845         ;;
4846     gnu/kfreebsd)
4847         add_cppflags -D_BSD_SOURCE
4848         ;;
4849     gnu)
4850         ;;
4851     qnx)
4852         add_cppflags -D_QNX_SOURCE
4853         network_extralibs="-lsocket"
4854         ;;
4855     symbian)
4856         SLIBSUF=".dll"
4857         enable dos_paths
4858         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4859         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4860         add_ldflags -Wl,--target1-abs,--no-undefined \
4861                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4862                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4863         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4864                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4865                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4866         ;;
4867     osf1)
4868         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4869         ;;
4870     minix)
4871         ;;
4872     plan9)
4873         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4874                      -D_REENTRANT_SOURCE        \
4875                      -D_RESEARCH_SOURCE         \
4876                      -DFD_SETSIZE=96            \
4877                      -DHAVE_SOCK_OPTS
4878         add_compat strtod.o strtod=avpriv_strtod
4879         network_extralibs='-lbsd'
4880         exeobjs=compat/plan9/main.o
4881         disable ffserver
4882         cp_f='cp'
4883         ;;
4884     none)
4885         ;;
4886     *)
4887         die "Unknown OS '$target_os'."
4888         ;;
4889 esac
4890
4891 # test if creating links works
4892 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4893 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4894 mkdir "$link_dest"
4895 $ln_s "$link_dest" "$link_name"
4896 touch "$link_dest/test_file"
4897 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4898     # create link to source path
4899     [ -e src ] && rm src
4900     $ln_s "$source_path" src
4901     source_link=src
4902 else
4903     # creating directory links doesn't work
4904     # fall back to using the full source path
4905     source_link="$source_path"
4906 fi
4907 # cleanup
4908 rm -r "$link_dest"
4909 rm -r "$link_name"
4910
4911 # determine libc flavour
4912
4913 probe_libc(){
4914     pfx=$1
4915     pfx_no_=${pfx%_}
4916     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4917     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4918         eval ${pfx}libc_type=uclibc
4919         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4920     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4921         eval ${pfx}libc_type=glibc
4922         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4923     # MinGW headers can be installed on Cygwin, so check for newlib first.
4924     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4925         eval ${pfx}libc_type=newlib
4926         add_${pfx}cppflags -U__STRICT_ANSI__
4927     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4928     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4929         eval ${pfx}libc_type=mingw64
4930         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4931             add_compat msvcrt/snprintf.o
4932             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4933         fi
4934         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4935         eval test \$${pfx_no_}cc_type = "gcc" &&
4936             add_${pfx}cppflags -D__printf__=__gnu_printf__
4937     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4938          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4939         eval ${pfx}libc_type=mingw32
4940         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4941             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4942             die "ERROR: MinGW32 runtime version must be >= 3.15."
4943         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4944         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
4945             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4946         eval test \$${pfx_no_}cc_type = "gcc" &&
4947             add_${pfx}cppflags -D__printf__=__gnu_printf__
4948     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4949         eval ${pfx}libc_type=msvcrt
4950         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4951             if [ "$pfx" = host_ ]; then
4952                 add_host_cppflags -Dsnprintf=_snprintf
4953             else
4954                 add_compat strtod.o strtod=avpriv_strtod
4955                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4956                                              _snprintf=avpriv_snprintf  \
4957                                              vsnprintf=avpriv_vsnprintf
4958             fi
4959         fi
4960         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4961         # 0x601 by default unless something else is set by the user.
4962         # This can easily lead to us detecting functions only present
4963         # in such new versions and producing binaries requiring windows 7.0.
4964         # Therefore explicitly set the default to XP unless the user has
4965         # set something else on the command line.
4966         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4967         # family. For these cases, configure is free to use any functions
4968         # found in the SDK headers by default. (Alternatively, we could force
4969         # _WIN32_WINNT to 0x0602 in that case.)
4970         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4971             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4972 #ifdef WINAPI_FAMILY
4973 #include <winapifamily.h>
4974 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4975 #error not desktop
4976 #endif
4977 #endif
4978 EOF
4979     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4980         eval ${pfx}libc_type=klibc
4981     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4982         eval ${pfx}libc_type=bionic
4983     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4984         eval ${pfx}libc_type=solaris
4985         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4986     fi
4987     check_${pfx}cc <<EOF
4988 #include <time.h>
4989 void *v = localtime_r;
4990 EOF
4991 test "$?" != 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
4992 #include <time.h>
4993 void *v = localtime_r;
4994 EOF
4995
4996 }
4997
4998 probe_libc
4999 test -n "$libc_type" && enable libc_$libc_type
5000 probe_libc host_
5001 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5002
5003 case $libc_type in
5004     bionic)
5005         add_compat strtod.o strtod=avpriv_strtod
5006         ;;
5007 esac
5008
5009 # hacks for compiler/libc/os combinations
5010
5011 if enabled_all tms470 libc_glibc; then
5012     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5013     add_cppflags -D__USER_LABEL_PREFIX__=
5014     add_cppflags -D__builtin_memset=memset
5015     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5016     add_cflags   -pds=48    # incompatible redefinition of macro
5017 fi
5018
5019 if enabled_all ccc libc_glibc; then
5020     add_ldflags -Wl,-z,now  # calls to libots crash without this
5021 fi
5022
5023 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5024     add_cppflags '-I\$(SRC_PATH)/compat/float'
5025
5026 esc(){
5027     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5028 }
5029
5030 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5031
5032 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5033
5034 set_default libdir
5035 : ${shlibdir_default:="$libdir"}
5036 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5037
5038 set_default $PATHS_LIST
5039 set_default nm
5040
5041 # we need to build at least one lib type
5042 if ! enabled_any static shared; then
5043     cat <<EOF
5044 At least one library type must be built.
5045 Specify --enable-static to build the static libraries or --enable-shared to
5046 build the shared libraries as well. To only build the shared libraries specify
5047 --disable-static in addition to --enable-shared.
5048 EOF
5049     exit 1
5050 fi
5051
5052 die_license_disabled() {
5053     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5054 }
5055
5056 die_license_disabled_gpl() {
5057     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5058 }
5059
5060 die_license_disabled gpl frei0r
5061 die_license_disabled gpl libcdio
5062 die_license_disabled gpl librubberband
5063 die_license_disabled gpl libsmbclient
5064 die_license_disabled gpl libvidstab
5065 die_license_disabled gpl libx264
5066 die_license_disabled gpl libx265
5067 die_license_disabled gpl libxavs
5068 die_license_disabled gpl libxvid
5069 die_license_disabled gpl x11grab
5070
5071 die_license_disabled nonfree cuda
5072 die_license_disabled nonfree cuvid
5073 die_license_disabled nonfree libfaac
5074 die_license_disabled nonfree libnpp
5075 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5076 enabled gpl && die_license_disabled_gpl nonfree openssl
5077
5078 die_license_disabled version3 gmp
5079 die_license_disabled version3 libopencore_amrnb
5080 die_license_disabled version3 libopencore_amrwb
5081 die_license_disabled version3 libsmbclient
5082 die_license_disabled version3 libvo_amrwbenc
5083
5084 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5085
5086 disabled optimizations || check_cflags -fomit-frame-pointer
5087
5088 enable_weak_pic() {
5089     disabled pic && return
5090     enable pic
5091     add_cppflags -DPIC
5092     case "$target_os" in
5093     mingw*|cygwin*)
5094         ;;
5095     *)
5096         add_cflags -fPIC
5097         ;;
5098     esac
5099     add_asflags  -fPIC
5100 }
5101
5102 enabled pic && enable_weak_pic
5103
5104 check_cc <<EOF || die "Symbol mangling check failed."
5105 int ff_extern;
5106 EOF
5107 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5108 extern_prefix=${sym%%ff_extern*}
5109
5110 check_cc <<EOF && enable_weak inline_asm
5111 void foo(void) { __asm__ volatile ("" ::); }
5112 EOF
5113
5114 _restrict=
5115 for restrict_keyword in restrict __restrict__ __restrict; do
5116     check_cc <<EOF && _restrict=$restrict_keyword && break
5117 void foo(char * $restrict_keyword p);
5118 EOF
5119 done
5120
5121 check_cc <<EOF && enable pragma_deprecated
5122 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5123 EOF
5124
5125 check_cc <<EOF && enable attribute_packed
5126 struct { int x; } __attribute__((packed)) x;
5127 EOF
5128
5129 check_cc <<EOF && enable attribute_may_alias
5130 union { int x; } __attribute__((may_alias)) x;
5131 EOF
5132
5133 check_cc <<EOF || die "endian test failed"
5134 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5135 EOF
5136 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5137
5138 if ! enabled ppc64 || enabled bigendian; then
5139     disable vsx
5140 fi
5141
5142 check_gas() {
5143     log "check_gas using '$as' as AS"
5144     # :vararg is used on aarch64, arm and ppc altivec
5145     check_as <<EOF || return 1
5146 .macro m n, y:vararg=0
5147 \n: .int \y
5148 .endm
5149 m x
5150 EOF
5151     # .altmacro is only used in arm asm
5152     ! enabled arm || check_as <<EOF || return 1
5153 .altmacro
5154 EOF
5155     enable gnu_as
5156     return 0
5157 }
5158
5159 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5160     nogas=:
5161     enabled_any arm aarch64 && nogas=die
5162     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5163     as_noop=-v
5164
5165     case $as_type in
5166         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5167         gcc)  gaspp_as_type=gas ;;
5168         *)    gaspp_as_type=$as_type ;;
5169     esac
5170
5171     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5172
5173     test "${as#*gas-preprocessor.pl}" != "$as" ||
5174     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5175         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5176
5177     if ! check_gas ; then
5178         as=${gas:=$as}
5179         check_gas || \
5180             $nogas "GNU assembler not found, install/update gas-preprocessor"
5181     fi
5182
5183     check_as <<EOF && enable as_func
5184 .func test
5185 .endfunc
5186 EOF
5187 fi
5188
5189 check_inline_asm inline_asm_labels '"1:\n"'
5190
5191 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5192
5193 if enabled aarch64; then
5194     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5195     # internal assembler in clang 3.3 does not support this instruction
5196     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5197     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5198
5199     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5200
5201 elif enabled alpha; then
5202
5203     check_cflags -mieee
5204
5205 elif enabled arm; then
5206
5207     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5208
5209     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5210 float func(float a, float b){ return a+b; }
5211 EOF
5212
5213     enabled thumb && check_cflags -mthumb || check_cflags -marm
5214
5215     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5216         enable vfp_args
5217     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5218         enable vfp_args
5219     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5220         case "${cross_prefix:-$cc}" in
5221             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5222             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5223 __asm__ (".eabi_attribute 28, 1");
5224 int main(void) { return 0; }
5225 EOF
5226         esac
5227         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5228     fi
5229
5230     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5231     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5232     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5233     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5234     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5235     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5236     enabled setend  && check_insn setend  'setend be'
5237
5238     [ $target_os = linux ] || [ $target_os = android ] ||
5239         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5240             $ARCH_EXT_LIST_ARM
5241
5242     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5243
5244     check_as <<EOF && enable as_dn_directive
5245 ra .dn d0.i16
5246 .unreq ra
5247 EOF
5248
5249     # llvm's integrated assembler supports .object_arch from llvm 3.5
5250     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5251 .object_arch armv4
5252 EOF
5253
5254     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5255
5256 elif enabled mips; then
5257
5258     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5259     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5260     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5261
5262     # Enable minimum ISA based on selected options
5263     if enabled mips64; then
5264         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5265         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5266         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5267     else
5268         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5269         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5270         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5271         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5272     fi
5273
5274     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5275     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5276     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5277     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5278     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5279
5280 elif enabled parisc; then
5281
5282     if enabled gcc; then
5283         case $($cc -dumpversion) in
5284             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5285         esac
5286     fi
5287
5288 elif enabled ppc; then
5289
5290     enable local_aligned_8 local_aligned_16 local_aligned_32
5291
5292     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5293     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5294     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5295     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5296
5297     # AltiVec flags: The FSF version of GCC differs from the Apple version
5298     if enabled altivec; then
5299         check_cflags -maltivec -mabi=altivec &&
5300         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5301         check_cflags -faltivec
5302
5303         # check if our compiler supports Motorola AltiVec C API
5304         check_cc <<EOF || disable altivec
5305 $inc_altivec_h
5306 int main(void) {
5307     vector signed int v1 = (vector signed int) { 0 };
5308     vector signed int v2 = (vector signed int) { 1 };
5309     v1 = vec_add(v1, v2);
5310     return 0;
5311 }
5312 EOF
5313
5314         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5315     fi
5316
5317     if enabled vsx; then
5318         check_cflags -mvsx &&
5319         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5320     fi
5321
5322     if enabled power8; then
5323         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5324     fi
5325
5326 elif enabled x86; then
5327
5328     check_builtin rdtsc    intrin.h   "__rdtsc()"
5329     check_builtin mm_empty mmintrin.h "_mm_empty()"
5330
5331     enable local_aligned_8 local_aligned_16 local_aligned_32
5332
5333     # check whether EBP is available on x86
5334     # As 'i' is stored on the stack, this program will crash
5335     # if the base pointer is used to access it because the
5336     # base pointer is cleared in the inline assembly code.
5337     check_exec_crash <<EOF && enable ebp_available
5338 volatile int i=0;
5339 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5340 return i;
5341 EOF
5342
5343     # check whether EBX is available on x86
5344     check_inline_asm ebx_available '""::"b"(0)' &&
5345         check_inline_asm ebx_available '"":::"%ebx"'
5346
5347     # check whether xmm clobbers are supported
5348     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5349
5350     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5351         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5352
5353     # check whether binutils is new enough to compile SSSE3/MMXEXT
5354     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5355     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5356
5357     if ! disabled_any asm mmx yasm; then
5358         if check_cmd $yasmexe --version; then
5359             enabled x86_64 && yasm_extra="-m amd64"
5360             yasm_debug="-g dwarf2"
5361         elif check_cmd nasm -v; then
5362             yasmexe=nasm
5363             yasm_debug="-g -F dwarf"
5364             if enabled x86_64; then
5365                 case "$objformat" in
5366                     elf)   objformat=elf64 ;;
5367                     win32) objformat=win64 ;;
5368                 esac
5369             fi
5370         fi
5371
5372         YASMFLAGS="-f $objformat $yasm_extra"
5373         enabled pic               && append YASMFLAGS "-DPIC"
5374         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5375         case "$objformat" in
5376             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5377         esac
5378
5379         check_yasm "movbe ecx, [5]" && enable yasm ||
5380             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5381         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5382         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5383         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5384         check_yasm "CPU amdnop" || disable cpunop
5385     fi
5386
5387     case "$cpu" in
5388         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5389             disable fast_clz
5390         ;;
5391     esac
5392
5393 fi
5394
5395 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5396
5397 check_ldflags -Wl,--as-needed
5398 check_ldflags -Wl,-z,noexecstack
5399
5400 if check_func dlopen && check_func dlsym; then
5401     ldl=
5402 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5403     ldl=-ldl
5404 fi
5405
5406 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5407 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5408 frei0r_filter_extralibs='$ldl'
5409 frei0r_src_filter_extralibs='$ldl'
5410 ladspa_filter_extralibs='$ldl'
5411 nvenc_extralibs='$ldl'
5412 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5413 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5414
5415 if ! disabled network; then
5416     check_func getaddrinfo $network_extralibs
5417     check_func inet_aton $network_extralibs
5418
5419     check_type netdb.h "struct addrinfo"
5420     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5421     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5422     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5423     check_type poll.h "struct pollfd"
5424     check_type netinet/sctp.h "struct sctp_event_subscribe"
5425     check_struct "sys/socket.h" "struct msghdr" msg_flags
5426     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5427     check_type netinet/in.h "struct sockaddr_in6"
5428     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5429     check_type "sys/types.h sys/socket.h" socklen_t
5430
5431     # Prefer arpa/inet.h over winsock2
5432     if check_header arpa/inet.h ; then
5433         check_func closesocket
5434     elif check_header winsock2.h ; then
5435         check_func_headers winsock2.h closesocket -lws2 &&
5436             network_extralibs="-lws2" ||
5437         { check_func_headers winsock2.h closesocket -lws2_32 &&
5438             network_extralibs="-lws2_32"; } || disable winsock2_h network
5439         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5440
5441         check_type ws2tcpip.h socklen_t
5442         check_type ws2tcpip.h "struct addrinfo"
5443         check_type ws2tcpip.h "struct group_source_req"
5444         check_type ws2tcpip.h "struct ip_mreq_source"
5445         check_type ws2tcpip.h "struct ipv6_mreq"
5446         check_type winsock2.h "struct pollfd"
5447         check_struct winsock2.h "struct sockaddr" sa_len
5448         check_type ws2tcpip.h "struct sockaddr_in6"
5449         check_type ws2tcpip.h "struct sockaddr_storage"
5450     else
5451         disable network
5452     fi
5453 fi
5454
5455 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5456 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5457 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5458 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5459 check_builtin sarestart signal.h "SA_RESTART"
5460 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5461 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5462 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5463 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5464 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5465
5466 case "$custom_allocator" in
5467     jemalloc)
5468         # jemalloc by default does not use a prefix
5469         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5470     ;;
5471     tcmalloc)
5472         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5473         malloc_prefix=tc_
5474     ;;
5475 esac
5476
5477 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5478 check_func  ${malloc_prefix}memalign            && enable memalign
5479 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5480
5481 check_func  access
5482 check_func_headers stdlib.h arc4random
5483 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5484 check_func  fcntl
5485 check_func  fork
5486 check_func  gethrtime
5487 check_func  getopt
5488 check_func  getrusage
5489 check_func  gettimeofday
5490 check_func  isatty
5491 check_func  mach_absolute_time
5492 check_func  mkstemp
5493 check_func  mmap
5494 check_func  mprotect
5495 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5496 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5497 check_func  sched_getaffinity
5498 check_func  setrlimit
5499 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5500 check_func  strerror_r
5501 check_func  sysconf
5502 check_func  sysctl
5503 check_func  usleep
5504
5505 check_func_headers conio.h kbhit
5506 check_func_headers io.h setmode
5507 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5508 check_func_headers stdlib.h getenv
5509 check_func_headers sys/stat.h lstat
5510
5511 check_func_headers windows.h CoTaskMemFree -lole32
5512 check_func_headers windows.h GetProcessAffinityMask
5513 check_func_headers windows.h GetProcessTimes
5514 check_func_headers windows.h GetSystemTimeAsFileTime
5515 check_func_headers windows.h LoadLibrary
5516 check_func_headers windows.h MapViewOfFile
5517 check_func_headers windows.h PeekNamedPipe
5518 check_func_headers windows.h SetConsoleTextAttribute
5519 check_func_headers windows.h SetConsoleCtrlHandler
5520 check_func_headers windows.h Sleep
5521 check_func_headers windows.h VirtualAlloc
5522 check_struct windows.h "CONDITION_VARIABLE" Ptr
5523 check_func_headers glob.h glob
5524 enabled xlib &&
5525     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5526
5527 check_header AudioToolbox/AudioToolbox.h
5528 check_header direct.h
5529 check_header dirent.h
5530 check_header dlfcn.h
5531 check_header d3d11.h
5532 check_header dxva.h
5533 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5534 check_header io.h
5535 check_header libcrystalhd/libcrystalhd_if.h
5536 check_header mach/mach_time.h
5537 check_header malloc.h
5538 check_header net/udplite.h
5539 check_header poll.h
5540 check_header sys/mman.h
5541 check_header sys/param.h
5542 check_header sys/resource.h
5543 check_header sys/select.h
5544 check_header sys/time.h
5545 check_header sys/un.h
5546 check_header termios.h
5547 check_header unistd.h
5548 check_header valgrind/valgrind.h
5549 check_header vdpau/vdpau.h
5550 check_header vdpau/vdpau_x11.h
5551 check_header VideoDecodeAcceleration/VDADecoder.h
5552 check_header VideoToolbox/VideoToolbox.h
5553 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5554 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5555 check_header windows.h
5556 check_header X11/extensions/XvMClib.h
5557 check_header asm/types.h
5558
5559 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5560 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5561 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5562 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5563
5564 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5565
5566 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5567 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5568 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5569 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5570 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5571
5572 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5573 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5574 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5575 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5576 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5577 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5578
5579 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5580
5581 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
5582 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
5583 check_type "cuviddec.h" "CUVIDJPEGPICPARAMS"
5584 check_type "cuviddec.h" "CUVIDMPEG2PICPARAMS"
5585 check_type "cuviddec.h" "CUVIDMPEG4PICPARAMS"
5586 check_type "cuviddec.h" "CUVIDVC1PICPARAMS"
5587 check_type "cuviddec.h" "CUVIDVP9PICPARAMS"
5588
5589 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5590
5591 if ! disabled w32threads && ! enabled pthreads; then
5592     check_func_headers "windows.h process.h" _beginthreadex &&
5593         enable w32threads || disable w32threads
5594     if ! enabled w32threads && enabled winrt; then
5595         check_func_headers "windows.h" CreateThread &&
5596             enable w32threads || disable w32threads
5597     fi
5598 fi
5599
5600 # check for some common methods of building with pthread support
5601 # do this before the optional library checks as some of them require pthreads
5602 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5603     enable pthreads
5604     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5605         add_cflags -pthread
5606         add_extralibs -pthread
5607     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5608         add_cflags -pthreads
5609         add_extralibs -pthreads
5610     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5611         add_cflags -ldl -pthread
5612         add_extralibs -ldl -pthread
5613     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5614         add_extralibs -lpthreadGC2
5615     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5616         :
5617     elif ! check_func pthread_join && ! check_func pthread_create; then
5618         disable pthreads
5619     fi
5620     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5621 fi
5622
5623
5624 if enabled pthreads; then
5625   check_func pthread_cancel
5626 fi
5627
5628 enabled pthreads &&
5629     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5630
5631 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5632 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5633 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5634
5635 check_lib math.h sin -lm && LIBM="-lm"
5636 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5637
5638 atan2f_args=2
5639 copysign_args=2
5640 hypot_args=2
5641 ldexpf_args=2
5642 powf_args=2
5643
5644 for func in $MATH_FUNCS; do
5645     eval check_mathfunc $func \${${func}_args:-1}
5646 done
5647
5648 for func in $COMPLEX_FUNCS; do
5649     eval check_complexfunc $func \${${func}_args:-1}
5650 done
5651
5652 # Enable CUVID by default if CUDA is enabled
5653 if enabled cuda && ! disabled cuvid; then
5654     enable cuvid
5655 fi
5656
5657 # these are off by default, so fail if requested and not available
5658 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5659 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5660                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5661 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5662                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5663                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5664 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
5665                                die "ERROR: CUDA not found"; }
5666 enabled cuvid             && { check_lib cuviddec.h cuvidCreateDecoder -lnvcuvid ||
5667                                die "ERROR: CUVID not found"; } &&
5668                              { enabled cuda ||
5669                                die "ERROR: CUVID requires CUDA"; }
5670 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5671 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5672 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5673 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5674                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5675 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5676 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5677 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5678 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5679                                check_lib2 "dlfcn.h" dlopen -ldl; }
5680 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5681 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5682 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5683 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5684 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5685 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5686                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5687                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5688 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5689 enabled libebur128        && require ebur128 ebur128.h ebur128_relative_threshold -lebur128
5690 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5691 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5692                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5693                                  warn "using libfdk without pkg-config"; } }
5694 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"
5695 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5696 enabled fontconfig        && enable libfontconfig
5697 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5698 enabled libfreetype       && require_libfreetype
5699 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5700 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5701 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5702                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5703                                done || die "ERROR: libgsm not found"; }
5704 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5705 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5706 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5707 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5708 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5709 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5710 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5711 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5712 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5713 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5714                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5715                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5716                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5717 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5718 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5719                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5720                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5721                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5722                                die "ERROR: libopenjpeg not found"; }
5723 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5724 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5725 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5726 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5727 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5728 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5729 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5730 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5731                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5732 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5733 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5734 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5735 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5736 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5737 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5738 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5739                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5740                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5741 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5742 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5743 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5744 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5745
5746 enabled libvpx            && {
5747     enabled libvpx_vp8_decoder && {
5748         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5749             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5750                 die "ERROR: libvpx decoder version must be >=0.9.1";
5751     }
5752     enabled libvpx_vp8_encoder && {
5753         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5754             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5755                 die "ERROR: libvpx encoder version must be >=0.9.7";
5756     }
5757     enabled libvpx_vp9_decoder && {
5758         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5759             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5760                 disable libvpx_vp9_decoder;
5761     }
5762     enabled libvpx_vp9_encoder && {
5763         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5764             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5765                 disable libvpx_vp9_encoder;
5766     }
5767     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5768         die "libvpx enabled but no supported decoders found"
5769     fi
5770 }
5771
5772 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5773 enabled libwebp           && {
5774     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5775     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5776 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5777                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5778                                  warn "using libx264 without pkg-config"; } } &&
5779                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5780                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5781                              { check_cpp_condition x264.h "X264_MPEG2" &&
5782                                enable libx262; }
5783 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5784                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5785                                die "ERROR: libx265 version must be >= 68."; }
5786 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5787 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5788 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5789 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5790 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5791                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5792                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5793 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5794 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5795                                 { ! enabled cross_compile && {
5796                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5797                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5798                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5799                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5800                                die "ERROR: mmal not found"; }
5801 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5802
5803 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5804 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5805                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5806                                die "ERROR: openal not found"; } &&
5807                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5808                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5809 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5810                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5811                                die "ERROR: opencl not found"; } &&
5812                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5813                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5814                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5815 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5816                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5817                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5818                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5819                                die "ERROR: opengl not found."
5820                              }
5821 enabled omx_rpi && enable omx
5822 enabled omx               && { check_header OMX_Core.h ||
5823                                 { ! enabled cross_compile && enabled omx_rpi && {
5824                                     add_cflags -isystem/opt/vc/include/IL ; }
5825                                 check_header OMX_Core.h ; } ||
5826                                die "ERROR: OpenMAX IL headers not found"; }
5827 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5828                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5829                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5830                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5831                                die "ERROR: openssl not found"; }
5832 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5833
5834 # libdc1394 check
5835 if enabled libdc1394; then
5836     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5837         enable libdc1394_2; } ||
5838     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5839         enable libdc1394_1; } ||
5840     die "ERROR: No version of libdc1394 found "
5841 fi
5842
5843 if enabled gcrypt; then
5844     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5845     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5846         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5847         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5848         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5849             die "ERROR: gcrypt not found"
5850         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5851     else
5852         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5853     fi
5854 fi
5855
5856 if ! disabled sdl; then
5857     SDL_CONFIG="${cross_prefix}sdl-config"
5858     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5859         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5860         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5861         enable sdl
5862     else
5863         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5864             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5865             sdl_libs=$("${SDL_CONFIG}" --libs)
5866             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5867             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5868             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5869             enable sdl
5870         elif enabled sdl ; then
5871             die "ERROR: SDL not found"
5872         else
5873             disable sdl
5874         fi
5875     fi
5876     if test $target_os = "mingw32"; then
5877         sdl_libs="$sdl_libs -mconsole"
5878     fi
5879 fi
5880 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5881
5882 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5883     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5884     enable securetransport; }
5885
5886 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5887                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5888
5889 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5890 enabled makeinfo \
5891     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5892     && enable makeinfo_html || disable makeinfo_html
5893 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5894 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5895 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5896 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5897
5898 check_header linux/fb.h
5899 check_header linux/videodev.h
5900 check_header linux/videodev2.h
5901 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5902
5903 check_header sys/videoio.h
5904 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5905
5906 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5907 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5908 # w32api 3.12 had it defined wrong
5909 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5910
5911 check_type "dshow.h" IBaseFilter
5912
5913 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5914 { check_header dev/bktr/ioctl_meteor.h &&
5915   check_header dev/bktr/ioctl_bt848.h; } ||
5916 { check_header machine/ioctl_meteor.h &&
5917   check_header machine/ioctl_bt848.h; } ||
5918 { check_header dev/video/meteor/ioctl_meteor.h &&
5919   check_header dev/video/bktr/ioctl_bt848.h; } ||
5920 check_header dev/ic/bt8xx.h
5921
5922 check_header sndio.h
5923 if check_struct sys/soundcard.h audio_buf_info bytes; then
5924     enable_safe sys/soundcard.h
5925 else
5926     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5927     #include <sys/soundcard.h>
5928     audio_buf_info abc;
5929 EOF
5930 fi
5931 check_header soundcard.h
5932
5933 enabled_any alsa_indev alsa_outdev &&
5934     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5935
5936 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5937     check_func jack_port_get_latency_range -ljack
5938
5939 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5940
5941 if enabled libcdio; then
5942     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5943     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5944     die "ERROR: No usable libcdio/cdparanoia found"
5945 fi
5946
5947 enabled xlib &&
5948     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5949
5950 if ! disabled libxcb; then
5951     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5952         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5953     } && disable x11grab && enable libxcb
5954
5955 if enabled libxcb; then
5956     disabled libxcb_shm || {
5957         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5958             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5959         } && check_header sys/shm.h && enable libxcb_shm; }
5960
5961     disabled libxcb_xfixes || {
5962         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5963             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5964         } && enable libxcb_xfixes; }
5965
5966     disabled libxcb_shape || {
5967         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5968             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5969         } && enable libxcb_shape; }
5970
5971     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5972     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5973 fi
5974 fi
5975
5976 if enabled x11grab; then
5977     enabled xlib || die "ERROR: Xlib not found"
5978     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5979     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5980 fi
5981
5982 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5983
5984 enabled dxva2api_h &&
5985     check_cc <<EOF && enable dxva2api_cobj
5986 #define _WIN32_WINNT 0x0600
5987 #define COBJMACROS
5988 #include <windows.h>
5989 #include <d3d9.h>
5990 #include <dxva2api.h>
5991 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5992 EOF
5993
5994 enabled vaapi &&
5995     check_lib va/va.h vaInitialize -lva ||
5996     disable vaapi
5997
5998 enabled vaapi &&
5999     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6000     disable vaapi
6001
6002 if enabled vaapi ; then
6003     enabled xlib &&
6004     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6005     enable vaapi_x11
6006
6007     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6008     enable vaapi_drm
6009 fi
6010
6011 enabled vdpau &&
6012     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6013     disable vdpau
6014
6015 enabled vdpau && enabled xlib &&
6016     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6017     enable vdpau_x11
6018
6019 if enabled x86; then
6020     case $target_os in
6021         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6022             ;;
6023         *)
6024             disable nvenc
6025             ;;
6026     esac
6027 else
6028     disable nvenc
6029 fi
6030
6031 enabled nvenc &&
6032     check_cc -I$source_path <<EOF || disable nvenc
6033 #include "compat/nvenc/nvEncodeAPI.h"
6034 NV_ENCODE_API_FUNCTION_LIST flist;
6035 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6036 int main(void) { return 0; }
6037 EOF
6038
6039 # Funny iconv installations are not unusual, so check it after all flags have been set
6040 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6041
6042 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6043
6044 # add some useful compiler flags if supported
6045 check_cflags -Wdeclaration-after-statement
6046 check_cflags -Wall
6047 check_cflags -Wdisabled-optimization
6048 check_cflags -Wpointer-arith
6049 check_cflags -Wredundant-decls
6050 check_cflags -Wwrite-strings
6051 check_cflags -Wtype-limits
6052 check_cflags -Wundef
6053 check_cflags -Wmissing-prototypes
6054 check_cflags -Wno-pointer-to-int-cast
6055 check_cflags -Wstrict-prototypes
6056 check_cflags -Wempty-body
6057 enabled extra_warnings && check_cflags -Winline
6058 enabled extra_warnings && check_cflags -Wcast-qual
6059
6060 check_disable_warning(){
6061     warning_flag=-W${1#-Wno-}
6062     test_cflags $warning_flag && add_cflags $1
6063 }
6064
6065 check_disable_warning -Wno-parentheses
6066 check_disable_warning -Wno-switch
6067 check_disable_warning -Wno-format-zero-length
6068 check_disable_warning -Wno-pointer-sign
6069 check_disable_warning -Wno-unused-const-variable
6070
6071 # add some linker flags
6072 check_ldflags -Wl,--warn-common
6073 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6074 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6075 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6076 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6077
6078 # add some strip flags
6079 # -wN '..@*' is more selective than -x, but not available everywhere.
6080 check_stripflags -wN \'..@*\' || check_stripflags -x
6081
6082 enabled neon_clobber_test &&
6083     check_ldflags -Wl,--wrap,avcodec_open2              \
6084                   -Wl,--wrap,avcodec_decode_audio4      \
6085                   -Wl,--wrap,avcodec_decode_video2      \
6086                   -Wl,--wrap,avcodec_decode_subtitle2   \
6087                   -Wl,--wrap,avcodec_encode_audio2      \
6088                   -Wl,--wrap,avcodec_encode_video2      \
6089                   -Wl,--wrap,avcodec_send_packet        \
6090                   -Wl,--wrap,avcodec_receive_frame      \
6091                   -Wl,--wrap,avcodec_encode_subtitle    \
6092                   -Wl,--wrap,swr_convert                \
6093                   -Wl,--wrap,avresample_convert ||
6094     disable neon_clobber_test
6095
6096 enabled xmm_clobber_test &&
6097     check_ldflags -Wl,--wrap,avcodec_open2              \
6098                   -Wl,--wrap,avcodec_decode_audio4      \
6099                   -Wl,--wrap,avcodec_decode_video2      \
6100                   -Wl,--wrap,avcodec_decode_subtitle2   \
6101                   -Wl,--wrap,avcodec_encode_audio2      \
6102                   -Wl,--wrap,avcodec_encode_video2      \
6103                   -Wl,--wrap,avcodec_encode_subtitle    \
6104                   -Wl,--wrap,avcodec_send_packet        \
6105                   -Wl,--wrap,avcodec_receive_frame      \
6106                   -Wl,--wrap,swr_convert                \
6107                   -Wl,--wrap,avresample_convert         \
6108                   -Wl,--wrap,sws_scale ||
6109     disable xmm_clobber_test
6110
6111 check_ld "cc" <<EOF && enable proper_dce
6112 extern const int array[512];
6113 static inline int func(void) { return array[0]; }
6114 int main(void) { return 0; }
6115 EOF
6116
6117 if enabled proper_dce; then
6118     echo "X { local: *; };" > $TMPV
6119     if test_ldflags -Wl,${version_script},$TMPV; then
6120         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6121         check_cc <<EOF && enable symver_asm_label
6122 void ff_foo(void) __asm__ ("av_foo@VERSION");
6123 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6124 EOF
6125         check_cc <<EOF && enable symver_gnu_asm
6126 __asm__(".symver ff_foo,av_foo@VERSION");
6127 void ff_foo(void) {}
6128 EOF
6129     fi
6130 fi
6131
6132 if [ -z "$optflags" ]; then
6133     if enabled small; then
6134         optflags=$cflags_size
6135     elif enabled optimizations; then
6136         optflags=$cflags_speed
6137     else
6138         optflags=$cflags_noopt
6139     fi
6140 fi
6141
6142 check_optflags(){
6143     check_cflags "$@"
6144     enabled lto && check_ldflags "$@"
6145 }
6146
6147
6148 if enabled lto; then
6149     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6150     check_cflags  -flto
6151     check_ldflags -flto $cpuflags
6152     disable inline_asm_direct_symbol_refs
6153 fi
6154
6155 check_optflags $optflags
6156 check_optflags -fno-math-errno
6157 check_optflags -fno-signed-zeros
6158
6159 enabled ftrapv && check_cflags -ftrapv
6160
6161 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6162 int x;
6163 EOF
6164
6165
6166 if enabled icc; then
6167     # Just warnings, no remarks
6168     check_cflags -w1
6169     # -wd: Disable following warnings
6170     # 144, 167, 556: -Wno-pointer-sign
6171     # 188: enumerated type mixed with another type
6172     # 1292: attribute "foo" ignored
6173     # 1419: external declaration in primary source file
6174     # 10006: ignoring unknown option -fno-signed-zeros
6175     # 10148: ignoring unknown option -Wno-parentheses
6176     # 10156: ignoring option '-W'; no argument required
6177     # 13200: No EMMS instruction before call to function
6178     # 13203: No EMMS instruction before return from function
6179     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6180     # 11030: Warning unknown option --as-needed
6181     # 10156: ignoring option '-export'; no argument required
6182     check_ldflags -wd10156,11030
6183     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6184     enable ebp_available
6185     # The test above does not test linking
6186     enabled lto && disable symver_asm_label
6187     if enabled x86_32; then
6188         icc_version=$($cc -dumpversion)
6189         test ${icc_version%%.*} -ge 11 &&
6190             check_cflags -falign-stack=maintain-16-byte ||
6191             disable aligned_stack
6192     fi
6193 elif enabled ccc; then
6194     # disable some annoying warnings
6195     add_cflags -msg_disable bitnotint
6196     add_cflags -msg_disable mixfuncvoid
6197     add_cflags -msg_disable nonstandcast
6198     add_cflags -msg_disable unsupieee
6199 elif enabled gcc; then
6200     check_optflags -fno-tree-vectorize
6201     check_cflags -Werror=format-security
6202     check_cflags -Werror=implicit-function-declaration
6203     check_cflags -Werror=missing-prototypes
6204     check_cflags -Werror=return-type
6205     check_cflags -Werror=vla
6206     check_cflags -Wformat
6207     check_cflags -fdiagnostics-color=auto
6208     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6209 elif enabled llvm_gcc; then
6210     check_cflags -mllvm -stack-alignment=16
6211 elif enabled clang; then
6212     check_cflags -mllvm -stack-alignment=16
6213     check_cflags -Qunused-arguments
6214     check_cflags -Werror=implicit-function-declaration
6215     check_cflags -Werror=missing-prototypes
6216     check_cflags -Werror=return-type
6217 elif enabled cparser; then
6218     add_cflags -Wno-missing-variable-declarations
6219     add_cflags -Wno-empty-statement
6220 elif enabled armcc; then
6221     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6222     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6223     # 2523: use of inline assembly is deprecated
6224     add_cflags -W${armcc_opt},--diag_suppress=2523
6225     add_cflags -W${armcc_opt},--diag_suppress=1207
6226     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6227     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6228     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6229     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6230 elif enabled tms470; then
6231     add_cflags -pds=824 -pds=837
6232     disable inline_asm
6233 elif enabled pathscale; then
6234     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6235 elif enabled_any msvc icl; then
6236     enabled x86_32 && disable aligned_stack
6237     enabled_all x86_32 debug && add_cflags -Oy-
6238     enabled debug && add_ldflags -debug
6239     enable pragma_deprecated
6240     if enabled icl; then
6241         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6242         # (correctly) on icl 13.x.
6243         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6244             add_cflags -Qansi-alias
6245         # Some inline asm is not compilable in debug
6246         if enabled debug; then
6247             disable ebp_available
6248             disable ebx_available
6249         fi
6250     fi
6251     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6252     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6253     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6254     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6255     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6256     # MSVC 2013 and newer can handle it fine.
6257     # If this declspec fails, force including stdlib.h before the restrict redefinition
6258     # happens in config.h.
6259     if [ $_restrict != restrict ]; then
6260         check_cc <<EOF || add_cflags -FIstdlib.h
6261 __declspec($_restrict) void* foo(int);
6262 EOF
6263     fi
6264     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6265     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6266     # this flag should be re-checked on newer compiler releases and put under a
6267     # version check once its fixed
6268     check_cflags -d2SSAOptimizer-
6269 fi
6270
6271 for pfx in "" host_; do
6272     varname=${pfx%_}cc_type
6273     eval "type=\$$varname"
6274     if [ $type = "msvc" ]; then
6275         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6276 static inline int foo(int a) { return a; }
6277 EOF
6278     fi
6279 done
6280
6281 case $as_type in
6282     clang)
6283         add_asflags -Qunused-arguments
6284     ;;
6285 esac
6286
6287 case $ld_type in
6288     clang)
6289         check_ldflags -Qunused-arguments
6290     ;;
6291 esac
6292
6293 case $target_os in
6294     osf1)
6295         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6296     ;;
6297     plan9)
6298         add_cppflags -Dmain=plan9_main
6299     ;;
6300 esac
6301
6302 enable frame_thread_encoder
6303
6304 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6305
6306 check_deps $CONFIG_LIST       \
6307            $CONFIG_EXTRA      \
6308            $HAVE_LIST         \
6309            $ALL_COMPONENTS    \
6310
6311 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"
6312
6313
6314 if test $target_os = "haiku"; then
6315     disable memalign
6316     disable posix_memalign
6317 fi
6318
6319 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6320     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6321     enable dxva2_lib
6322
6323 ! enabled_any memalign posix_memalign aligned_malloc &&
6324     enabled simd_align_16 && enable memalign_hack
6325
6326 # add_dep lib dep
6327 # -> enable ${lib}_deps_${dep}
6328 # -> add $dep to ${lib}_deps only once
6329 add_dep() {
6330     lib=$1
6331     dep=$2
6332     enabled "${lib}_deps_${dep}" && return 0
6333     enable  "${lib}_deps_${dep}"
6334     prepend "${lib}_deps" $dep
6335 }
6336
6337 # merge deps lib components
6338 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6339 merge_deps() {
6340     lib=$1
6341     shift
6342     for comp in $*; do
6343         enabled $comp || continue
6344         eval "dep=\"\$${comp}_deps\""
6345         for d in $dep; do
6346             add_dep $lib $d
6347         done
6348     done
6349 }
6350
6351 merge_deps libavfilter $FILTER_LIST
6352
6353 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6354
6355 for thread in $THREADS_LIST; do
6356     if enabled $thread; then
6357         test -n "$thread_type" &&
6358             die "ERROR: Only one thread type must be selected." ||
6359             thread_type="$thread"
6360     fi
6361 done
6362
6363 enabled zlib && add_cppflags -DZLIB_CONST
6364
6365 # conditional library dependencies, in linking order
6366 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6367 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6368 enabled aresample_filter    && prepend avfilter_deps "swresample"
6369 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6370 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6371 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6372 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6373 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6374 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6375 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6376 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6377 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6378 enabled pan_filter          && prepend avfilter_deps "swresample"
6379 enabled pp_filter           && prepend avfilter_deps "postproc"
6380 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6381 enabled resample_filter && prepend avfilter_deps "avresample"
6382 enabled sab_filter          && prepend avfilter_deps "swscale"
6383 enabled scale_filter    && prepend avfilter_deps "swscale"
6384 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6385 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6386 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6387 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6388 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6389 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6390 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6391 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6392 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6393
6394 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6395
6396 enabled opus_decoder    && prepend avcodec_deps "swresample"
6397
6398 expand_deps(){
6399     lib_deps=${1}_deps
6400     eval "deps=\$$lib_deps"
6401     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6402     unique $lib_deps
6403 }
6404
6405 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6406 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6407
6408 map 'expand_deps $v' $LIBRARY_LIST
6409
6410 echo "install prefix            $prefix"
6411 echo "source path               $source_path"
6412 echo "C compiler                $cc"
6413 echo "C library                 $libc_type"
6414 if test "$host_cc" != "$cc"; then
6415     echo "host C compiler           $host_cc"
6416     echo "host C library            $host_libc_type"
6417 fi
6418 echo "ARCH                      $arch ($cpu)"
6419 if test "$build_suffix" != ""; then
6420     echo "build suffix              $build_suffix"
6421 fi
6422 if test "$progs_suffix" != ""; then
6423     echo "progs suffix              $progs_suffix"
6424 fi
6425 if test "$extra_version" != ""; then
6426     echo "version string suffix     $extra_version"
6427 fi
6428 echo "big-endian                ${bigendian-no}"
6429 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6430 if enabled x86; then
6431     echo "${yasmexe}                      ${yasm-no}"
6432     echo "MMX enabled               ${mmx-no}"
6433     echo "MMXEXT enabled            ${mmxext-no}"
6434     echo "3DNow! enabled            ${amd3dnow-no}"
6435     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6436     echo "SSE enabled               ${sse-no}"
6437     echo "SSSE3 enabled             ${ssse3-no}"
6438     echo "AESNI enabled             ${aesni-no}"
6439     echo "AVX enabled               ${avx-no}"
6440     echo "XOP enabled               ${xop-no}"
6441     echo "FMA3 enabled              ${fma3-no}"
6442     echo "FMA4 enabled              ${fma4-no}"
6443     echo "i686 features enabled     ${i686-no}"
6444     echo "CMOV is fast              ${fast_cmov-no}"
6445     echo "EBX available             ${ebx_available-no}"
6446     echo "EBP available             ${ebp_available-no}"
6447 fi
6448 if enabled aarch64; then
6449     echo "NEON enabled              ${neon-no}"
6450     echo "VFP enabled               ${vfp-no}"
6451 fi
6452 if enabled arm; then
6453     echo "ARMv5TE enabled           ${armv5te-no}"
6454     echo "ARMv6 enabled             ${armv6-no}"
6455     echo "ARMv6T2 enabled           ${armv6t2-no}"
6456     echo "VFP enabled               ${vfp-no}"
6457     echo "NEON enabled              ${neon-no}"
6458     echo "THUMB enabled             ${thumb-no}"
6459 fi
6460 if enabled mips; then
6461     echo "MIPS FPU enabled          ${mipsfpu-no}"
6462     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6463     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6464     echo "MIPS MSA enabled          ${msa-no}"
6465     echo "LOONGSON MMI enabled      ${mmi-no}"
6466 fi
6467 if enabled ppc; then
6468     echo "AltiVec enabled           ${altivec-no}"
6469     echo "VSX enabled               ${vsx-no}"
6470     echo "POWER8 enabled            ${power8-no}"
6471     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6472     echo "dcbzl available           ${dcbzl-no}"
6473 fi
6474 echo "debug symbols             ${debug-no}"
6475 echo "strip symbols             ${stripping-no}"
6476 echo "optimize for size         ${small-no}"
6477 echo "optimizations             ${optimizations-no}"
6478 echo "static                    ${static-no}"
6479 echo "shared                    ${shared-no}"
6480 echo "postprocessing support    ${postproc-no}"
6481 echo "new filter support        ${avfilter-no}"
6482 echo "network support           ${network-no}"
6483 echo "threading support         ${thread_type-no}"
6484 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6485 echo "SDL support               ${sdl-no}"
6486 echo "opencl enabled            ${opencl-no}"
6487 echo "JNI support               ${jni-no}"
6488 echo "texi2html enabled         ${texi2html-no}"
6489 echo "perl enabled              ${perl-no}"
6490 echo "pod2man enabled           ${pod2man-no}"
6491 echo "makeinfo enabled          ${makeinfo-no}"
6492 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6493 test -n "$random_seed" &&
6494     echo "random seed               ${random_seed}"
6495 echo
6496
6497 echo "Enabled programs:"
6498 print_enabled '' $PROGRAM_LIST | print_in_columns
6499 echo
6500
6501 echo "External libraries:"
6502 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6503 echo
6504
6505 echo "External libraries providing hardware acceleration:"
6506 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6507 echo
6508
6509 echo "Libraries:"
6510 print_enabled '' $LIBRARY_LIST | print_in_columns
6511 echo
6512
6513 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6514     echo "Enabled ${type}s:"
6515     eval list=\$$(toupper $type)_LIST
6516     print_enabled '_*' $list | print_in_columns
6517     echo
6518 done
6519
6520 license="LGPL version 2.1 or later"
6521 if enabled nonfree; then
6522     license="nonfree and unredistributable"
6523 elif enabled gplv3; then
6524     license="GPL version 3 or later"
6525 elif enabled lgplv3; then
6526     license="LGPL version 3 or later"
6527 elif enabled gpl; then
6528     license="GPL version 2 or later"
6529 fi
6530
6531 echo "License: $license"
6532
6533 echo "Creating config.mak, config.h, and doc/config.texi..."
6534
6535 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6536
6537 enabled stripping || strip="echo skipping strip"
6538
6539 config_files="$TMPH config.mak doc/config.texi"
6540
6541 cat > config.mak <<EOF
6542 # Automatically generated by configure - do not modify!
6543 ifndef FFMPEG_CONFIG_MAK
6544 FFMPEG_CONFIG_MAK=1
6545 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6546 prefix=$prefix
6547 LIBDIR=\$(DESTDIR)$libdir
6548 SHLIBDIR=\$(DESTDIR)$shlibdir
6549 INCDIR=\$(DESTDIR)$incdir
6550 BINDIR=\$(DESTDIR)$bindir
6551 DATADIR=\$(DESTDIR)$datadir
6552 DOCDIR=\$(DESTDIR)$docdir
6553 MANDIR=\$(DESTDIR)$mandir
6554 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6555 INSTALL_NAME_DIR=$install_name_dir
6556 SRC_PATH=$source_path
6557 SRC_LINK=$source_link
6558 ifndef MAIN_MAKEFILE
6559 SRC_PATH:=\$(SRC_PATH:.%=..%)
6560 endif
6561 CC_IDENT=$cc_ident
6562 ARCH=$arch
6563 INTRINSICS=$intrinsics
6564 CC=$cc
6565 CXX=$cxx
6566 AS=$as
6567 OBJCC=$objcc
6568 LD=$ld
6569 DEPCC=$dep_cc
6570 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6571 DEPAS=$as
6572 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6573 YASM=$yasmexe
6574 DEPYASM=$yasmexe
6575 AR=$ar
6576 ARFLAGS=$arflags
6577 AR_O=$ar_o
6578 RANLIB=$ranlib
6579 STRIP=$strip
6580 CP=cp -p
6581 LN_S=$ln_s
6582 CPPFLAGS=$CPPFLAGS
6583 CFLAGS=$CFLAGS
6584 CXXFLAGS=$CXXFLAGS
6585 OBJCFLAGS=$OBJCFLAGS
6586 ASFLAGS=$ASFLAGS
6587 AS_C=$AS_C
6588 AS_O=$AS_O
6589 OBJCC_C=$OBJCC_C
6590 OBJCC_E=$OBJCC_E
6591 OBJCC_O=$OBJCC_O
6592 CC_C=$CC_C
6593 CC_E=$CC_E
6594 CC_O=$CC_O
6595 CXX_C=$CXX_C
6596 CXX_O=$CXX_O
6597 LD_O=$LD_O
6598 LD_LIB=$LD_LIB
6599 LD_PATH=$LD_PATH
6600 DLLTOOL=$dlltool
6601 WINDRES=$windres
6602 DEPWINDRES=$dep_cc
6603 DOXYGEN=$doxygen
6604 LDFLAGS=$LDFLAGS
6605 LDEXEFLAGS=$LDEXEFLAGS
6606 LDLIBFLAGS=$LDLIBFLAGS
6607 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6608 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6609 YASMFLAGS=$YASMFLAGS
6610 BUILDSUF=$build_suffix
6611 PROGSSUF=$progs_suffix
6612 FULLNAME=$FULLNAME
6613 LIBPREF=$LIBPREF
6614 LIBSUF=$LIBSUF
6615 LIBNAME=$LIBNAME
6616 SLIBPREF=$SLIBPREF
6617 SLIBSUF=$SLIBSUF
6618 EXESUF=$EXESUF
6619 EXTRA_VERSION=$extra_version
6620 CCDEP=$CCDEP
6621 CXXDEP=$CXXDEP
6622 CCDEP_FLAGS=$CCDEP_FLAGS
6623 ASDEP=$ASDEP
6624 ASDEP_FLAGS=$ASDEP_FLAGS
6625 CC_DEPFLAGS=$CC_DEPFLAGS
6626 AS_DEPFLAGS=$AS_DEPFLAGS
6627 HOSTCC=$host_cc
6628 HOSTLD=$host_ld
6629 HOSTCFLAGS=$host_cflags
6630 HOSTCPPFLAGS=$host_cppflags
6631 HOSTEXESUF=$HOSTEXESUF
6632 HOSTLDFLAGS=$host_ldflags
6633 HOSTLIBS=$host_libs
6634 DEPHOSTCC=$host_cc
6635 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6636 HOSTCCDEP=$HOSTCCDEP
6637 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6638 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6639 HOSTCC_C=$HOSTCC_C
6640 HOSTCC_O=$HOSTCC_O
6641 HOSTLD_O=$HOSTLD_O
6642 TARGET_EXEC=$target_exec $target_exec_args
6643 TARGET_PATH=$target_path
6644 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6645 CFLAGS-ffplay=$sdl_cflags
6646 ZLIB=$($ldflags_filter -lz)
6647 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6648 EXTRALIBS=$extralibs
6649 COMPAT_OBJS=$compat_objs
6650 EXEOBJS=$exeobjs
6651 INSTALL=$install
6652 LIBTARGET=${LIBTARGET}
6653 SLIBNAME=${SLIBNAME}
6654 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6655 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6656 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6657 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6658 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6659 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6660 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6661 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6662 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6663 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6664 NOREDZONE_FLAGS=$noredzone_flags
6665 EOF
6666
6667 get_version(){
6668     lcname=lib${1}
6669     name=$(toupper $lcname)
6670     file=$source_path/$lcname/version.h
6671     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6672     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6673     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6674     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6675     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6676     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6677 }
6678
6679 map 'get_version $v' $LIBRARY_LIST
6680
6681 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6682
6683 print_program_libs(){
6684     eval "program_libs=\$${1}_libs"
6685     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6686 }
6687
6688 map 'print_program_libs $v' $PROGRAM_LIST
6689
6690 cat > $TMPH <<EOF
6691 /* Automatically generated by configure - do not modify! */
6692 #ifndef FFMPEG_CONFIG_H
6693 #define FFMPEG_CONFIG_H
6694 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6695 #define FFMPEG_LICENSE "$(c_escape $license)"
6696 #define CONFIG_THIS_YEAR 2016
6697 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6698 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6699 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6700 #define av_restrict $_restrict
6701 #define EXTERN_PREFIX "${extern_prefix}"
6702 #define EXTERN_ASM ${extern_prefix}
6703 #define BUILDSUF "$build_suffix"
6704 #define SLIBSUF "$SLIBSUF"
6705 #define HAVE_MMX2 HAVE_MMXEXT
6706 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6707 EOF
6708
6709 test -n "$assert_level" &&
6710     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6711
6712 test -n "$malloc_prefix" &&
6713     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6714
6715 if enabled yasm; then
6716     append config_files $TMPASM
6717     printf '' >$TMPASM
6718 fi
6719
6720 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6721
6722
6723 mkdir -p doc
6724 mkdir -p tests
6725 mkdir -p tests/api
6726 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6727
6728 print_config ARCH_   "$config_files" $ARCH_LIST
6729 print_config HAVE_   "$config_files" $HAVE_LIST
6730 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6731                                      $CONFIG_EXTRA      \
6732                                      $ALL_COMPONENTS    \
6733
6734 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6735 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6736
6737 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6738 cp_if_changed $TMPH config.h
6739 touch .config
6740
6741 enabled yasm && cp_if_changed $TMPASM config.asm
6742
6743 cat > $TMPH <<EOF
6744 /* Generated by ffconf */
6745 #ifndef AVUTIL_AVCONFIG_H
6746 #define AVUTIL_AVCONFIG_H
6747 EOF
6748
6749 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6750
6751 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6752
6753 cp_if_changed $TMPH libavutil/avconfig.h
6754
6755 if test -n "$WARNINGS"; then
6756     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6757     enabled fatal_warnings && exit 1
6758 fi
6759
6760 # generate the lists of enabled components
6761 print_enabled_components(){
6762     file=$1
6763     struct_name=$2
6764     name=$3
6765     shift 3
6766     echo "static const $struct_name *$name[] = {" > $TMPH
6767     for c in $*; do
6768         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6769     done
6770     echo "    NULL };" >> $TMPH
6771     cp_if_changed $TMPH $file
6772 }
6773
6774 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6775 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6776
6777 # build pkg-config files
6778
6779 lib_version(){
6780     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6781 }
6782
6783 pkgconfig_generate(){
6784     name=$1
6785     shortname=${name#lib}${build_suffix}
6786     comment=$2
6787     version=$3
6788     libs=$4
6789     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6790     requires=${requires%, }
6791     enabled ${name#lib} || return 0
6792     mkdir -p $name
6793     cat <<EOF > $name/$name${build_suffix}.pc
6794 prefix=$prefix
6795 exec_prefix=\${prefix}
6796 libdir=$libdir
6797 includedir=$incdir
6798
6799 Name: $name
6800 Description: $comment
6801 Version: $version
6802 Requires: $(enabled shared || echo $requires)
6803 Requires.private: $(enabled shared && echo $requires)
6804 Conflicts:
6805 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6806 Libs.private: $(enabled shared && echo $libs)
6807 Cflags: -I\${includedir}
6808 EOF
6809
6810 mkdir -p doc/examples/pc-uninstalled
6811 includedir=${source_path}
6812 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6813     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6814 prefix=
6815 exec_prefix=
6816 libdir=\${pcfiledir}/../../../$name
6817 includedir=${includedir}
6818
6819 Name: $name
6820 Description: $comment
6821 Version: $version
6822 Requires: $requires
6823 Conflicts:
6824 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6825 Cflags: -I\${includedir}
6826 EOF
6827 }
6828
6829 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6830 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6831 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6832 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6833 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6834 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6835 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6836 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6837 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"