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   --enable-nvenc           enable Nvidia video encoding code [no]
 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     localtime_r
1925     lstat
1926     lzo1x_999_compress
1927     mach_absolute_time
1928     MapViewOfFile
1929     memalign
1930     mkstemp
1931     mmap
1932     mprotect
1933     nanosleep
1934     PeekNamedPipe
1935     posix_memalign
1936     pthread_cancel
1937     sched_getaffinity
1938     SetConsoleTextAttribute
1939     SetConsoleCtrlHandler
1940     setmode
1941     setrlimit
1942     Sleep
1943     strerror_r
1944     sysconf
1945     sysctl
1946     usleep
1947     UTGetOSTypeFromString
1948     VirtualAlloc
1949     wglGetProcAddress
1950 "
1951
1952 TOOLCHAIN_FEATURES="
1953     as_dn_directive
1954     as_func
1955     as_object_arch
1956     asm_mod_q
1957     attribute_may_alias
1958     attribute_packed
1959     ebp_available
1960     ebx_available
1961     gnu_as
1962     gnu_windres
1963     ibm_asm
1964     inline_asm_direct_symbol_refs
1965     inline_asm_labels
1966     inline_asm_nonlocal_labels
1967     pragma_deprecated
1968     rsync_contimeout
1969     symver_asm_label
1970     symver_gnu_asm
1971     vfp_args
1972     xform_asm
1973     xmm_clobbers
1974 "
1975
1976 TYPES_LIST="
1977     CONDITION_VARIABLE_Ptr
1978     socklen_t
1979     struct_addrinfo
1980     struct_group_source_req
1981     struct_ip_mreq_source
1982     struct_ipv6_mreq
1983     struct_msghdr_msg_flags
1984     struct_pollfd
1985     struct_rusage_ru_maxrss
1986     struct_sctp_event_subscribe
1987     struct_sockaddr_in6
1988     struct_sockaddr_sa_len
1989     struct_sockaddr_storage
1990     struct_stat_st_mtim_tv_nsec
1991     struct_v4l2_frmivalenum_discrete
1992 "
1993
1994 HAVE_LIST="
1995     $ARCH_EXT_LIST
1996     $(add_suffix _external $ARCH_EXT_LIST)
1997     $(add_suffix _inline   $ARCH_EXT_LIST)
1998     $ARCH_FEATURES
1999     $ATOMICS_LIST
2000     $BUILTIN_LIST
2001     $COMPLEX_FUNCS
2002     $HAVE_LIST_CMDLINE
2003     $HAVE_LIST_PUB
2004     $HEADERS_LIST
2005     $INTRINSICS_LIST
2006     $MATH_FUNCS
2007     $SYSTEM_FUNCS
2008     $THREADS_LIST
2009     $TOOLCHAIN_FEATURES
2010     $TYPES_LIST
2011     atomics_native
2012     dos_paths
2013     dxva2_lib
2014     dxva2api_cobj
2015     libc_msvcrt
2016     libdc1394_1
2017     libdc1394_2
2018     makeinfo
2019     makeinfo_html
2020     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2021     perl
2022     pod2man
2023     sdl
2024     section_data_rel_ro
2025     texi2html
2026     threads
2027     vaapi_drm
2028     vaapi_x11
2029     vdpau_x11
2030     winrt
2031     xlib
2032 "
2033
2034 # options emitted with CONFIG_ prefix but not available on the command line
2035 CONFIG_EXTRA="
2036     aandcttables
2037     ac3dsp
2038     audio_frame_queue
2039     audiodsp
2040     blockdsp
2041     bswapdsp
2042     cabac
2043     dirac_parse
2044     dvprofile
2045     exif
2046     faandct
2047     faanidct
2048     fdctdsp
2049     flacdsp
2050     fmtconvert
2051     frame_thread_encoder
2052     g722dsp
2053     golomb
2054     gplv3
2055     h263dsp
2056     h264chroma
2057     h264dsp
2058     h264pred
2059     h264qpel
2060     hpeldsp
2061     huffman
2062     huffyuvdsp
2063     huffyuvencdsp
2064     idctdsp
2065     iirfilter
2066     imdct15
2067     intrax8
2068     iso_media
2069     ividsp
2070     jpegtables
2071     lgplv3
2072     libx262
2073     llauddsp
2074     llviddsp
2075     lpc
2076     lzf
2077     me_cmp
2078     mpeg_er
2079     mpegaudio
2080     mpegaudiodsp
2081     mpegvideo
2082     mpegvideoenc
2083     mss34dsp
2084     pixblockdsp
2085     qpeldsp
2086     qsv
2087     qsvdec
2088     qsvenc
2089     rangecoder
2090     riffdec
2091     riffenc
2092     rtpdec
2093     rtpenc_chain
2094     rv34dsp
2095     sinewin
2096     snappy
2097     srtp
2098     startcode
2099     texturedsp
2100     texturedspenc
2101     tpeldsp
2102     vaapi_encode
2103     vc1dsp
2104     videodsp
2105     vp3dsp
2106     vp56dsp
2107     vp8dsp
2108     vt_bt2020
2109     wma_freqs
2110     wmv2dsp
2111 "
2112
2113 CMDLINE_SELECT="
2114     $ARCH_EXT_LIST
2115     $CONFIG_LIST
2116     $HAVE_LIST_CMDLINE
2117     $THREADS_LIST
2118     asm
2119     cross_compile
2120     debug
2121     extra_warnings
2122     logging
2123     lto
2124     optimizations
2125     rpath
2126     stripping
2127 "
2128
2129 PATHS_LIST="
2130     bindir
2131     datadir
2132     docdir
2133     incdir
2134     libdir
2135     mandir
2136     pkgconfigdir
2137     prefix
2138     shlibdir
2139     install_name_dir
2140 "
2141
2142 CMDLINE_SET="
2143     $PATHS_LIST
2144     ar
2145     arch
2146     as
2147     assert_level
2148     build_suffix
2149     cc
2150     objcc
2151     cpu
2152     cross_prefix
2153     custom_allocator
2154     cxx
2155     dep_cc
2156     doxygen
2157     env
2158     extra_version
2159     gas
2160     host_cc
2161     host_cflags
2162     host_ld
2163     host_ldflags
2164     host_libs
2165     host_os
2166     install
2167     ld
2168     ln_s
2169     logfile
2170     malloc_prefix
2171     nm
2172     optflags
2173     pkg_config
2174     pkg_config_flags
2175     progs_suffix
2176     random_seed
2177     ranlib
2178     samples
2179     strip
2180     sws_max_filter_size
2181     sysinclude
2182     sysroot
2183     target_exec
2184     target_os
2185     target_path
2186     target_samples
2187     tempprefix
2188     toolchain
2189     valgrind
2190     yasmexe
2191 "
2192
2193 CMDLINE_APPEND="
2194     extra_cflags
2195     extra_cxxflags
2196     extra_objcflags
2197     host_cppflags
2198 "
2199
2200 # code dependency declarations
2201
2202 # architecture extensions
2203
2204 armv5te_deps="arm"
2205 armv6_deps="arm"
2206 armv6t2_deps="arm"
2207 armv8_deps="aarch64"
2208 neon_deps_any="aarch64 arm"
2209 intrinsics_neon_deps="neon"
2210 vfp_deps_any="aarch64 arm"
2211 vfpv3_deps="vfp"
2212 setend_deps="arm"
2213
2214 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2215
2216 loongson2_deps="mips"
2217 loongson3_deps="mips"
2218 mipsfpu_deps="mips"
2219 mipsdsp_deps="mips"
2220 mipsdspr2_deps="mips"
2221 mips32r2_deps="mips"
2222 mips32r5_deps="mips"
2223 mips32r6_deps="mips"
2224 mips64r2_deps="mips"
2225 mips64r6_deps="mips"
2226 msa_deps="mipsfpu"
2227 mmi_deps="mips"
2228
2229 altivec_deps="ppc"
2230 dcbzl_deps="ppc"
2231 ldbrx_deps="ppc"
2232 ppc4xx_deps="ppc"
2233 vsx_deps="altivec"
2234 power8_deps="vsx"
2235
2236 cpunop_deps="i686"
2237 x86_64_select="i686"
2238 x86_64_suggest="fast_cmov"
2239
2240 amd3dnow_deps="mmx"
2241 amd3dnowext_deps="amd3dnow"
2242 i686_deps="x86"
2243 mmx_deps="x86"
2244 mmxext_deps="mmx"
2245 sse_deps="mmxext"
2246 sse2_deps="sse"
2247 sse3_deps="sse2"
2248 ssse3_deps="sse3"
2249 sse4_deps="ssse3"
2250 sse42_deps="sse4"
2251 aesni_deps="sse42"
2252 avx_deps="sse42"
2253 xop_deps="avx"
2254 fma3_deps="avx"
2255 fma4_deps="avx"
2256 avx2_deps="avx"
2257
2258 mmx_external_deps="yasm"
2259 mmx_inline_deps="inline_asm"
2260 mmx_suggest="mmx_external mmx_inline"
2261
2262 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2263     eval dep=\$${ext}_deps
2264     eval ${ext}_external_deps='"${dep}_external"'
2265     eval ${ext}_inline_deps='"${dep}_inline"'
2266     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2267 done
2268
2269 aligned_stack_if_any="aarch64 ppc x86"
2270 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2271 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2272 fast_unaligned_if_any="aarch64 ppc x86"
2273 simd_align_16_if_any="altivec neon sse"
2274
2275 # system capabilities
2276 symver_if_any="symver_asm_label symver_gnu_asm"
2277 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2278
2279 # threading support
2280 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2281 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2282 atomics_win32_if="MemoryBarrier"
2283 atomics_native_if_any="$ATOMICS_LIST"
2284 w32threads_deps="atomics_native"
2285 threads_if_any="$THREADS_LIST"
2286
2287 # subsystems
2288 dct_select="rdft"
2289 dirac_parse_select="golomb"
2290 error_resilience_select="me_cmp"
2291 faandct_deps="faan fdctdsp"
2292 faanidct_deps="faan idctdsp"
2293 h264dsp_select="startcode"
2294 frame_thread_encoder_deps="encoders threads"
2295 intrax8_select="blockdsp idctdsp"
2296 mdct_select="fft"
2297 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2298 mpeg_er_select="error_resilience"
2299 mpegaudio_select="mpegaudiodsp"
2300 mpegaudiodsp_select="dct"
2301 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2302 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2303 vc1dsp_select="h264chroma qpeldsp startcode"
2304 rdft_select="fft"
2305
2306 # decoders / encoders
2307 aac_decoder_select="imdct15 mdct sinewin"
2308 aac_fixed_decoder_select="mdct sinewin"
2309 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2310 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2311 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2312 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2313 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2314 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2315 adpcm_g722_decoder_select="g722dsp"
2316 adpcm_g722_encoder_select="g722dsp"
2317 aic_decoder_select="golomb idctdsp"
2318 alac_encoder_select="lpc"
2319 als_decoder_select="bswapdsp"
2320 amrnb_decoder_select="lsp"
2321 amrwb_decoder_select="lsp"
2322 amv_decoder_select="sp5x_decoder exif"
2323 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2324 ape_decoder_select="bswapdsp llauddsp"
2325 apng_decoder_select="zlib"
2326 apng_encoder_select="huffyuvencdsp zlib"
2327 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2328 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2329 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2330 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2331 atrac1_decoder_select="mdct sinewin"
2332 atrac3_decoder_select="mdct"
2333 atrac3p_decoder_select="mdct sinewin"
2334 avrn_decoder_select="exif jpegtables"
2335 bink_decoder_select="blockdsp hpeldsp"
2336 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2337 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2338 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2339 cllc_decoder_select="bswapdsp"
2340 comfortnoise_encoder_select="lpc"
2341 cook_decoder_select="audiodsp mdct sinewin"
2342 cscd_decoder_select="lzo"
2343 cscd_decoder_suggest="zlib"
2344 dca_decoder_select="mdct"
2345 dds_decoder_select="texturedsp"
2346 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2347 dnxhd_decoder_select="blockdsp idctdsp"
2348 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2349 dvvideo_decoder_select="dvprofile idctdsp"
2350 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2351 dxa_decoder_select="zlib"
2352 dxv_decoder_select="lzf texturedsp"
2353 eac3_decoder_select="ac3_decoder"
2354 eac3_encoder_select="ac3_encoder"
2355 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2356 eatgq_decoder_select="aandcttables"
2357 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2358 exr_decoder_select="zlib"
2359 ffv1_decoder_select="golomb rangecoder"
2360 ffv1_encoder_select="rangecoder"
2361 ffvhuff_decoder_select="huffyuv_decoder"
2362 ffvhuff_encoder_select="huffyuv_encoder"
2363 fic_decoder_select="golomb"
2364 flac_decoder_select="flacdsp golomb"
2365 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2366 flashsv2_decoder_select="zlib"
2367 flashsv2_encoder_select="zlib"
2368 flashsv_decoder_select="zlib"
2369 flashsv_encoder_select="zlib"
2370 flv_decoder_select="h263_decoder"
2371 flv_encoder_select="h263_encoder"
2372 fourxm_decoder_select="blockdsp bswapdsp"
2373 fraps_decoder_select="bswapdsp huffman"
2374 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2375 g729_decoder_select="audiodsp"
2376 h261_decoder_select="mpegvideo"
2377 h261_encoder_select="aandcttables mpegvideoenc"
2378 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2379 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2380 h263i_decoder_select="h263_decoder"
2381 h263p_decoder_select="h263_decoder"
2382 h263p_encoder_select="h263_encoder"
2383 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2384 h264_decoder_suggest="error_resilience"
2385 hap_decoder_select="snappy texturedsp"
2386 hap_encoder_deps="libsnappy"
2387 hap_encoder_select="texturedspenc"
2388 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2389 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2390 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2391 iac_decoder_select="imc_decoder"
2392 imc_decoder_select="bswapdsp fft mdct sinewin"
2393 indeo3_decoder_select="hpeldsp"
2394 indeo4_decoder_select="ividsp"
2395 indeo5_decoder_select="ividsp"
2396 interplay_video_decoder_select="hpeldsp"
2397 jpegls_decoder_select="golomb mjpeg_decoder"
2398 jpegls_encoder_select="golomb"
2399 jv_decoder_select="blockdsp"
2400 lagarith_decoder_select="huffyuvdsp"
2401 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2402 loco_decoder_select="golomb"
2403 magicyuv_decoder_select="huffyuvdsp"
2404 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2405 metasound_decoder_select="lsp mdct sinewin"
2406 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2407 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2408 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2409 mjpegb_decoder_select="mjpeg_decoder"
2410 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2411 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2412 mlp_decoder_select="mlp_parser"
2413 motionpixels_decoder_select="bswapdsp"
2414 mp1_decoder_select="mpegaudio"
2415 mp1float_decoder_select="mpegaudio"
2416 mp2_decoder_select="mpegaudio"
2417 mp2float_decoder_select="mpegaudio"
2418 mp3_decoder_select="mpegaudio"
2419 mp3adu_decoder_select="mpegaudio"
2420 mp3adufloat_decoder_select="mpegaudio"
2421 mp3float_decoder_select="mpegaudio"
2422 mp3on4_decoder_select="mpegaudio"
2423 mp3on4float_decoder_select="mpegaudio"
2424 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2425 mpc8_decoder_select="mpegaudiodsp"
2426 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2427 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2428 mpegvideo_decoder_select="mpegvideo"
2429 mpeg1video_decoder_select="mpegvideo"
2430 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2431 mpeg2video_decoder_select="mpegvideo"
2432 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2433 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2434 mpeg4_encoder_select="h263_encoder"
2435 msa1_decoder_select="mss34dsp"
2436 msmpeg4v1_decoder_select="h263_decoder"
2437 msmpeg4v2_decoder_select="h263_decoder"
2438 msmpeg4v2_encoder_select="h263_encoder"
2439 msmpeg4v3_decoder_select="h263_decoder"
2440 msmpeg4v3_encoder_select="h263_encoder"
2441 mss2_decoder_select="vc1_decoder mpegvideo"
2442 mts2_decoder_select="mss34dsp"
2443 mxpeg_decoder_select="mjpeg_decoder"
2444 nellymoser_decoder_select="mdct sinewin"
2445 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2446 nuv_decoder_select="idctdsp lzo"
2447 on2avc_decoder_select="mdct"
2448 opus_decoder_deps="swresample"
2449 opus_decoder_select="imdct15"
2450 png_decoder_select="zlib"
2451 png_encoder_select="huffyuvencdsp zlib"
2452 prores_decoder_select="blockdsp idctdsp"
2453 prores_encoder_select="fdctdsp"
2454 qcelp_decoder_select="lsp"
2455 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2456 ra_144_decoder_select="audiodsp"
2457 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2458 ralf_decoder_select="golomb"
2459 rawvideo_decoder_select="bswapdsp"
2460 rscc_decoder_select="zlib"
2461 rtjpeg_decoder_select="me_cmp"
2462 rv10_decoder_select="h263_decoder"
2463 rv10_encoder_select="h263_encoder"
2464 rv20_decoder_select="h263_decoder"
2465 rv20_encoder_select="h263_encoder"
2466 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2467 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2468 screenpresso_decoder_select="zlib"
2469 shorten_decoder_select="golomb"
2470 sipr_decoder_select="lsp"
2471 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2472 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2473 sonic_decoder_select="golomb rangecoder"
2474 sonic_encoder_select="golomb rangecoder"
2475 sonic_ls_encoder_select="golomb rangecoder"
2476 sp5x_decoder_select="mjpeg_decoder"
2477 svq1_decoder_select="hpeldsp"
2478 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2479 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2480 svq3_decoder_suggest="zlib"
2481 tak_decoder_select="audiodsp"
2482 tdsc_decoder_select="zlib mjpeg_decoder"
2483 theora_decoder_select="vp3_decoder"
2484 thp_decoder_select="mjpeg_decoder"
2485 tiff_decoder_suggest="zlib lzma"
2486 tiff_encoder_suggest="zlib"
2487 truehd_decoder_select="mlp_parser"
2488 truemotion2_decoder_select="bswapdsp"
2489 truespeech_decoder_select="bswapdsp"
2490 tscc_decoder_select="zlib"
2491 twinvq_decoder_select="mdct lsp sinewin"
2492 txd_decoder_select="texturedsp"
2493 utvideo_decoder_select="bswapdsp"
2494 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2495 vble_decoder_select="huffyuvdsp"
2496 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2497 vc1_qsv_decoder_deps="libmfx"
2498 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2499 vc1image_decoder_select="vc1_decoder"
2500 vorbis_decoder_select="mdct"
2501 vorbis_encoder_select="mdct"
2502 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2503 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2504 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2505 vp6a_decoder_select="vp6_decoder"
2506 vp6f_decoder_select="vp6_decoder"
2507 vp7_decoder_select="h264pred videodsp vp8dsp"
2508 vp8_decoder_select="h264pred videodsp vp8dsp"
2509 vp9_decoder_select="videodsp vp9_parser"
2510 webp_decoder_select="vp8_decoder exif"
2511 wmalossless_decoder_select="llauddsp"
2512 wmapro_decoder_select="mdct sinewin wma_freqs"
2513 wmav1_decoder_select="mdct sinewin wma_freqs"
2514 wmav1_encoder_select="mdct sinewin wma_freqs"
2515 wmav2_decoder_select="mdct sinewin wma_freqs"
2516 wmav2_encoder_select="mdct sinewin wma_freqs"
2517 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2518 wmv1_decoder_select="h263_decoder"
2519 wmv1_encoder_select="h263_encoder"
2520 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2521 wmv2_encoder_select="h263_encoder wmv2dsp"
2522 wmv3_decoder_select="vc1_decoder"
2523 wmv3image_decoder_select="wmv3_decoder"
2524 xma1_decoder_select="wmapro_decoder"
2525 xma2_decoder_select="wmapro_decoder"
2526 zerocodec_decoder_select="zlib"
2527 zlib_decoder_select="zlib"
2528 zlib_encoder_select="zlib"
2529 zmbv_decoder_select="zlib"
2530 zmbv_encoder_select="zlib"
2531
2532 # platform codecs
2533 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2534 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2535
2536 # hardware accelerators
2537 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2538 cuvid_deps="cuda"
2539 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2540 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2541 vaapi_deps="va_va_h"
2542 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2543 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2544 vda_deps="vda_framework pthreads"
2545 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2546 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2547 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2548 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2549 xvmc_deps="X11_extensions_XvMClib_h"
2550
2551 h263_vaapi_hwaccel_deps="vaapi"
2552 h263_vaapi_hwaccel_select="h263_decoder"
2553 h263_videotoolbox_hwaccel_deps="videotoolbox"
2554 h263_videotoolbox_hwaccel_select="h263_decoder"
2555 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2556 h264_cuvid_hwaccel_deps="cuda cuvid CUVIDH264PICPARAMS"
2557 h264_d3d11va_hwaccel_deps="d3d11va"
2558 h264_d3d11va_hwaccel_select="h264_decoder"
2559 h264_dxva2_hwaccel_deps="dxva2"
2560 h264_dxva2_hwaccel_select="h264_decoder"
2561 h264_mediacodec_decoder_deps="mediacodec"
2562 h264_mediacodec_hwaccel_deps="mediacodec"
2563 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2564 h264_mmal_decoder_deps="mmal"
2565 h264_mmal_decoder_select="mmal"
2566 h264_mmal_hwaccel_deps="mmal"
2567 h264_omx_encoder_deps="omx"
2568 h264_qsv_hwaccel_deps="libmfx"
2569 h264_vaapi_hwaccel_deps="vaapi"
2570 h264_vaapi_hwaccel_select="h264_decoder"
2571 h264_vda_decoder_deps="vda"
2572 h264_vda_decoder_select="h264_decoder"
2573 h264_vda_hwaccel_deps="vda"
2574 h264_vda_hwaccel_select="h264_decoder"
2575 h264_vda_old_hwaccel_deps="vda"
2576 h264_vda_old_hwaccel_select="h264_decoder"
2577 h264_vdpau_decoder_deps="vdpau"
2578 h264_vdpau_decoder_select="h264_decoder"
2579 h264_vdpau_hwaccel_deps="vdpau"
2580 h264_vdpau_hwaccel_select="h264_decoder"
2581 h264_videotoolbox_hwaccel_deps="videotoolbox"
2582 h264_videotoolbox_hwaccel_select="h264_decoder"
2583 hevc_cuvid_hwaccel_deps="cuda cuvid CUVIDHEVCPICPARAMS"
2584 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2585 hevc_d3d11va_hwaccel_select="hevc_decoder"
2586 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2587 hevc_dxva2_hwaccel_select="hevc_decoder"
2588 hevc_qsv_hwaccel_deps="libmfx"
2589 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2590 hevc_vaapi_hwaccel_select="hevc_decoder"
2591 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2592 hevc_vdpau_hwaccel_select="hevc_decoder"
2593 mpeg_vdpau_decoder_deps="vdpau"
2594 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2595 mpeg_xvmc_hwaccel_deps="xvmc"
2596 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2597 mpeg1_vdpau_decoder_deps="vdpau"
2598 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2599 mpeg1_vdpau_hwaccel_deps="vdpau"
2600 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2601 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2602 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2603 mpeg1_xvmc_hwaccel_deps="xvmc"
2604 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2605 mpeg2_crystalhd_decoder_select="crystalhd"
2606 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2607 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2608 mpeg2_dxva2_hwaccel_deps="dxva2"
2609 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2610 mpeg2_mmal_decoder_deps="mmal"
2611 mpeg2_mmal_decoder_select="mmal"
2612 mpeg2_mmal_hwaccel_deps="mmal"
2613 mpeg2_qsv_hwaccel_deps="libmfx"
2614 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2615 mpeg2_vaapi_hwaccel_deps="vaapi"
2616 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2617 mpeg2_vdpau_hwaccel_deps="vdpau"
2618 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2619 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2620 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2621 mpeg2_xvmc_hwaccel_deps="xvmc"
2622 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2623 mpeg4_crystalhd_decoder_select="crystalhd"
2624 mpeg4_mmal_decoder_deps="mmal"
2625 mpeg4_mmal_decoder_select="mmal"
2626 mpeg4_mmal_hwaccel_deps="mmal"
2627 mpeg4_omx_encoder_deps="omx"
2628 mpeg4_vaapi_hwaccel_deps="vaapi"
2629 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2630 mpeg4_vdpau_decoder_deps="vdpau"
2631 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2632 mpeg4_vdpau_hwaccel_deps="vdpau"
2633 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2634 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2635 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2636 msmpeg4_crystalhd_decoder_select="crystalhd"
2637 vc1_crystalhd_decoder_select="crystalhd"
2638 vc1_cuvid_hwaccel_deps="cuda cuvid CUVIDVC1PICPARAMS"
2639 vc1_d3d11va_hwaccel_deps="d3d11va"
2640 vc1_d3d11va_hwaccel_select="vc1_decoder"
2641 vc1_dxva2_hwaccel_deps="dxva2"
2642 vc1_dxva2_hwaccel_select="vc1_decoder"
2643 vc1_mmal_decoder_deps="mmal"
2644 vc1_mmal_decoder_select="mmal"
2645 vc1_mmal_hwaccel_deps="mmal"
2646 vc1_qsv_hwaccel_deps="libmfx"
2647 vc1_qsv_hwaccel_select="qsvdec_vc1"
2648 vc1_vaapi_hwaccel_deps="vaapi"
2649 vc1_vaapi_hwaccel_select="vc1_decoder"
2650 vc1_vdpau_decoder_deps="vdpau"
2651 vc1_vdpau_decoder_select="vc1_decoder"
2652 vc1_vdpau_hwaccel_deps="vdpau"
2653 vc1_vdpau_hwaccel_select="vc1_decoder"
2654 vp8_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
2655 vp9_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
2656 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2657 vp9_d3d11va_hwaccel_select="vp9_decoder"
2658 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2659 vp9_dxva2_hwaccel_select="vp9_decoder"
2660 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2661 vp9_vaapi_hwaccel_select="vp9_decoder"
2662 wmv3_crystalhd_decoder_select="crystalhd"
2663 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2664 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2665 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2666 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2667 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2668
2669 # hardware-accelerated codecs
2670 omx_deps="dlopen pthreads"
2671 omx_extralibs='$ldl'
2672 qsvdec_select="qsv"
2673 qsvenc_select="qsv"
2674 vaapi_encode_deps="vaapi"
2675
2676 hwupload_cuda_filter_deps="cuda"
2677 scale_npp_filter_deps="cuda libnpp"
2678
2679 nvenc_encoder_deps="nvenc"
2680 h264_cuvid_decoder_deps="cuda cuvid CUVIDH264PICPARAMS"
2681 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2682 h264_nvenc_encoder_deps="nvenc"
2683 h264_qsv_decoder_deps="libmfx"
2684 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2685 h264_qsv_encoder_deps="libmfx"
2686 h264_qsv_encoder_select="qsvenc"
2687 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2688 h264_vaapi_encoder_select="vaapi_encode golomb"
2689
2690 hevc_cuvid_decoder_deps="cuda cuvid CUVIDHEVCPICPARAMS"
2691 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2692 hevc_nvenc_encoder_deps="nvenc"
2693 hevc_qsv_decoder_deps="libmfx"
2694 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2695 hevc_qsv_encoder_deps="libmfx"
2696 hevc_qsv_encoder_select="qsvenc"
2697 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2698 hevc_vaapi_encoder_select="vaapi_encode golomb"
2699 mpeg2_qsv_decoder_deps="libmfx"
2700 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2701 mpeg2_qsv_encoder_deps="libmfx"
2702 mpeg2_qsv_encoder_select="qsvenc"
2703 nvenc_h264_encoder_deps="nvenc"
2704 nvenc_hevc_encoder_deps="nvenc"
2705
2706 vc1_cuvid_decoder_deps="cuda cuvid CUVIDVC1PICPARAMS"
2707 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2708 vp8_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
2709 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2710 vp9_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
2711 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2712
2713 # parsers
2714 h264_parser_select="golomb h264dsp"
2715 hevc_parser_select="golomb"
2716 mpegvideo_parser_select="mpegvideo"
2717 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2718 vc1_parser_select="vc1dsp"
2719
2720 # bitstream_filters
2721 mjpeg2jpeg_bsf_select="jpegtables"
2722
2723 # external libraries
2724 aac_at_decoder_deps="audiotoolbox"
2725 ac3_at_decoder_deps="audiotoolbox"
2726 ac3_at_decoder_select="ac3_parser"
2727 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2728 alac_at_decoder_deps="audiotoolbox"
2729 amr_nb_at_decoder_deps="audiotoolbox"
2730 eac3_at_decoder_deps="audiotoolbox"
2731 eac3_at_decoder_select="ac3_parser"
2732 gsm_ms_at_decoder_deps="audiotoolbox"
2733 ilbc_at_decoder_deps="audiotoolbox"
2734 mp1_at_decoder_deps="audiotoolbox"
2735 mp2_at_decoder_deps="audiotoolbox"
2736 mp3_at_decoder_deps="audiotoolbox"
2737 pcm_alaw_at_decoder_deps="audiotoolbox"
2738 pcm_mulaw_at_decoder_deps="audiotoolbox"
2739 qdmc_at_decoder_deps="audiotoolbox"
2740 qdm2_at_decoder_deps="audiotoolbox"
2741 aac_at_encoder_deps="audiotoolbox"
2742 aac_at_encoder_select="audio_frame_queue"
2743 alac_at_encoder_deps="audiotoolbox"
2744 alac_at_encoder_select="audio_frame_queue"
2745 ilbc_at_encoder_deps="audiotoolbox"
2746 ilbc_at_encoder_select="audio_frame_queue"
2747 pcm_alaw_at_encoder_deps="audiotoolbox"
2748 pcm_alaw_at_encoder_select="audio_frame_queue"
2749 pcm_mulaw_at_encoder_deps="audiotoolbox"
2750 pcm_mulaw_at_encoder_select="audio_frame_queue"
2751 chromaprint_muxer_deps="chromaprint"
2752 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2753 libcelt_decoder_deps="libcelt"
2754 libfaac_encoder_deps="libfaac"
2755 libfaac_encoder_select="audio_frame_queue"
2756 libfdk_aac_decoder_deps="libfdk_aac"
2757 libfdk_aac_encoder_deps="libfdk_aac"
2758 libfdk_aac_encoder_select="audio_frame_queue"
2759 libgme_demuxer_deps="libgme"
2760 libgsm_decoder_deps="libgsm"
2761 libgsm_encoder_deps="libgsm"
2762 libgsm_ms_decoder_deps="libgsm"
2763 libgsm_ms_encoder_deps="libgsm"
2764 libilbc_decoder_deps="libilbc"
2765 libilbc_encoder_deps="libilbc"
2766 libkvazaar_encoder_deps="libkvazaar"
2767 libmodplug_demuxer_deps="libmodplug"
2768 libmp3lame_encoder_deps="libmp3lame"
2769 libmp3lame_encoder_select="audio_frame_queue"
2770 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2771 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2772 libopencore_amrnb_encoder_select="audio_frame_queue"
2773 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2774 libopenh264_encoder_deps="libopenh264"
2775 libopenjpeg_decoder_deps="libopenjpeg"
2776 libopenjpeg_encoder_deps="libopenjpeg"
2777 libopenmpt_demuxer_deps="libopenmpt"
2778 libopus_decoder_deps="libopus"
2779 libopus_encoder_deps="libopus"
2780 libopus_encoder_select="audio_frame_queue"
2781 libschroedinger_decoder_deps="libschroedinger"
2782 libschroedinger_encoder_deps="libschroedinger"
2783 libshine_encoder_deps="libshine"
2784 libshine_encoder_select="audio_frame_queue"
2785 libspeex_decoder_deps="libspeex"
2786 libspeex_encoder_deps="libspeex"
2787 libspeex_encoder_select="audio_frame_queue"
2788 libtheora_encoder_deps="libtheora"
2789 libtwolame_encoder_deps="libtwolame"
2790 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2791 libvorbis_decoder_deps="libvorbis"
2792 libvorbis_encoder_deps="libvorbis"
2793 libvorbis_encoder_select="audio_frame_queue"
2794 libvpx_vp8_decoder_deps="libvpx"
2795 libvpx_vp8_encoder_deps="libvpx"
2796 libvpx_vp9_decoder_deps="libvpx"
2797 libvpx_vp9_encoder_deps="libvpx"
2798 libwavpack_encoder_deps="libwavpack"
2799 libwebp_encoder_deps="libwebp"
2800 libwebp_anim_encoder_deps="libwebp"
2801 libx262_encoder_deps="libx262"
2802 libx264_encoder_deps="libx264"
2803 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2804 libx264rgb_encoder_select="libx264_encoder"
2805 libx265_encoder_deps="libx265"
2806 libxavs_encoder_deps="libxavs"
2807 libxvid_encoder_deps="libxvid"
2808 libzvbi_teletext_decoder_deps="libzvbi"
2809 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2810 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2811 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2812 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2813 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2814
2815 # demuxers / muxers
2816 ac3_demuxer_select="ac3_parser"
2817 asf_demuxer_select="riffdec"
2818 asf_o_demuxer_select="riffdec"
2819 asf_muxer_select="riffenc"
2820 asf_stream_muxer_select="asf_muxer"
2821 avi_demuxer_select="iso_media riffdec exif"
2822 avi_muxer_select="riffenc"
2823 avisynth_demuxer_deps="avisynth"
2824 avisynth_demuxer_select="riffdec"
2825 caf_demuxer_select="iso_media riffdec"
2826 dash_muxer_select="mp4_muxer"
2827 dirac_demuxer_select="dirac_parser"
2828 dts_demuxer_select="dca_parser"
2829 dtshd_demuxer_select="dca_parser"
2830 dv_demuxer_select="dvprofile"
2831 dv_muxer_select="dvprofile"
2832 dxa_demuxer_select="riffdec"
2833 eac3_demuxer_select="ac3_parser"
2834 f4v_muxer_select="mov_muxer"
2835 flac_demuxer_select="flac_parser"
2836 hds_muxer_select="flv_muxer"
2837 hls_muxer_select="mpegts_muxer"
2838 image2_alias_pix_demuxer_select="image2_demuxer"
2839 image2_brender_pix_demuxer_select="image2_demuxer"
2840 ipod_muxer_select="mov_muxer"
2841 ismv_muxer_select="mov_muxer"
2842 libnut_demuxer_deps="libnut"
2843 libnut_muxer_deps="libnut"
2844 matroska_audio_muxer_select="matroska_muxer"
2845 matroska_demuxer_select="iso_media riffdec"
2846 matroska_demuxer_suggest="bzlib lzo zlib"
2847 matroska_muxer_select="iso_media riffenc"
2848 mmf_muxer_select="riffenc"
2849 mov_demuxer_select="iso_media riffdec"
2850 mov_demuxer_suggest="zlib"
2851 mov_muxer_select="iso_media riffenc rtpenc_chain"
2852 mp3_demuxer_select="mpegaudio_parser"
2853 mp4_muxer_select="mov_muxer"
2854 mpegts_demuxer_select="iso_media"
2855 mpegts_muxer_select="adts_muxer latm_muxer"
2856 mpegtsraw_demuxer_select="mpegts_demuxer"
2857 mxf_d10_muxer_select="mxf_muxer"
2858 mxf_opatom_muxer_select="mxf_muxer"
2859 nut_muxer_select="riffenc"
2860 nuv_demuxer_select="riffdec"
2861 oga_muxer_select="ogg_muxer"
2862 ogg_demuxer_select="dirac_parse"
2863 ogv_muxer_select="ogg_muxer"
2864 opus_muxer_select="ogg_muxer"
2865 psp_muxer_select="mov_muxer"
2866 rtp_demuxer_select="sdp_demuxer"
2867 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2868 rtsp_demuxer_select="http_protocol rtpdec"
2869 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2870 sap_demuxer_select="sdp_demuxer"
2871 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2872 sdp_demuxer_select="rtpdec"
2873 smoothstreaming_muxer_select="ismv_muxer"
2874 spdif_muxer_select="aac_parser"
2875 spx_muxer_select="ogg_muxer"
2876 swf_demuxer_suggest="zlib"
2877 tak_demuxer_select="tak_parser"
2878 tg2_muxer_select="mov_muxer"
2879 tgp_muxer_select="mov_muxer"
2880 vobsub_demuxer_select="mpegps_demuxer"
2881 w64_demuxer_select="wav_demuxer"
2882 w64_muxer_select="wav_muxer"
2883 wav_demuxer_select="riffdec"
2884 wav_muxer_select="riffenc"
2885 webm_muxer_select="iso_media riffenc"
2886 webm_dash_manifest_demuxer_select="matroska_demuxer"
2887 wtv_demuxer_select="mpegts_demuxer riffdec"
2888 wtv_muxer_select="mpegts_muxer riffenc"
2889 xmv_demuxer_select="riffdec"
2890 xwma_demuxer_select="riffdec"
2891
2892 # indevs / outdevs
2893 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2894 alsa_outdev_deps="alsa_asoundlib_h"
2895 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2896 avfoundation_indev_select="avfoundation"
2897 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2898 caca_outdev_deps="libcaca"
2899 decklink_indev_deps="decklink pthreads"
2900 decklink_indev_extralibs="-lstdc++"
2901 decklink_outdev_deps="decklink pthreads"
2902 decklink_outdev_extralibs="-lstdc++"
2903 dshow_indev_deps="IBaseFilter"
2904 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2905 dv1394_indev_deps="dv1394"
2906 dv1394_indev_select="dv_demuxer"
2907 fbdev_indev_deps="linux_fb_h"
2908 fbdev_outdev_deps="linux_fb_h"
2909 gdigrab_indev_deps="CreateDIBSection"
2910 gdigrab_indev_extralibs="-lgdi32"
2911 gdigrab_indev_select="bmp_decoder"
2912 iec61883_indev_deps="libiec61883"
2913 jack_indev_deps="jack_jack_h"
2914 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2915 lavfi_indev_deps="avfilter"
2916 libcdio_indev_deps="libcdio"
2917 libdc1394_indev_deps="libdc1394"
2918 libv4l2_indev_deps="libv4l2"
2919 openal_indev_deps="openal"
2920 opengl_outdev_deps="opengl"
2921 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2922 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2923 pulse_indev_deps="libpulse"
2924 pulse_outdev_deps="libpulse"
2925 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2926 qtkit_indev_select="qtkit"
2927 sdl_outdev_deps="sdl"
2928 sndio_indev_deps="sndio_h"
2929 sndio_outdev_deps="sndio_h"
2930 v4l_indev_deps="linux_videodev_h"
2931 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2932 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2933 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2934 vfwcap_indev_extralibs="-lavicap32"
2935 x11grab_indev_deps="x11grab"
2936 x11grab_xcb_indev_deps="libxcb"
2937 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2938 xv_outdev_extralibs="-lXv -lX11 -lXext"
2939
2940 # protocols
2941 async_protocol_deps="threads"
2942 bluray_protocol_deps="libbluray"
2943 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2944 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2945 ffrtmpcrypt_protocol_select="tcp_protocol"
2946 ffrtmphttp_protocol_deps="!librtmp_protocol"
2947 ffrtmphttp_protocol_select="http_protocol"
2948 ftp_protocol_select="tcp_protocol"
2949 gopher_protocol_select="network"
2950 http_protocol_select="tcp_protocol"
2951 httpproxy_protocol_select="tcp_protocol"
2952 https_protocol_select="tls_protocol"
2953 icecast_protocol_select="http_protocol"
2954 librtmp_protocol_deps="librtmp"
2955 librtmpe_protocol_deps="librtmp"
2956 librtmps_protocol_deps="librtmp"
2957 librtmpt_protocol_deps="librtmp"
2958 librtmpte_protocol_deps="librtmp"
2959 libsmbclient_protocol_deps="libsmbclient gplv3"
2960 libssh_protocol_deps="libssh"
2961 mmsh_protocol_select="http_protocol"
2962 mmst_protocol_select="network"
2963 rtmp_protocol_deps="!librtmp_protocol"
2964 rtmp_protocol_select="tcp_protocol"
2965 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2966 rtmps_protocol_deps="!librtmp_protocol"
2967 rtmps_protocol_select="tls_protocol"
2968 rtmpt_protocol_select="ffrtmphttp_protocol"
2969 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2970 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2971 rtp_protocol_select="udp_protocol"
2972 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2973 sctp_protocol_select="network"
2974 srtp_protocol_select="rtp_protocol srtp"
2975 tcp_protocol_select="network"
2976 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2977 tls_gnutls_protocol_select="tcp_protocol"
2978 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2979 tls_openssl_protocol_select="tcp_protocol"
2980 tls_schannel_protocol_deps="schannel"
2981 tls_schannel_protocol_select="tcp_protocol"
2982 tls_securetransport_protocol_deps="securetransport"
2983 tls_securetransport_protocol_select="tcp_protocol"
2984 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2985 udp_protocol_select="network"
2986 udplite_protocol_select="network"
2987 unix_protocol_deps="sys_un_h"
2988 unix_protocol_select="network"
2989
2990 # filters
2991 afftfilt_filter_deps="avcodec"
2992 afftfilt_filter_select="fft"
2993 amovie_filter_deps="avcodec avformat"
2994 aresample_filter_deps="swresample"
2995 ass_filter_deps="libass"
2996 asyncts_filter_deps="avresample"
2997 atempo_filter_deps="avcodec"
2998 atempo_filter_select="rdft"
2999 azmq_filter_deps="libzmq"
3000 blackframe_filter_deps="gpl"
3001 boxblur_filter_deps="gpl"
3002 bs2b_filter_deps="libbs2b"
3003 colormatrix_filter_deps="gpl"
3004 cover_rect_filter_deps="avcodec avformat gpl"
3005 cropdetect_filter_deps="gpl"
3006 delogo_filter_deps="gpl"
3007 deshake_filter_select="pixelutils"
3008 drawtext_filter_deps="libfreetype"
3009 ebur128_filter_deps="gpl"
3010 eq_filter_deps="gpl"
3011 fftfilt_filter_deps="avcodec"
3012 fftfilt_filter_select="rdft"
3013 find_rect_filter_deps="avcodec avformat gpl"
3014 firequalizer_filter_deps="avcodec"
3015 firequalizer_filter_select="rdft"
3016 flite_filter_deps="libflite"
3017 framerate_filter_select="pixelutils"
3018 frei0r_filter_deps="frei0r dlopen"
3019 frei0r_src_filter_deps="frei0r dlopen"
3020 fspp_filter_deps="gpl"
3021 geq_filter_deps="gpl"
3022 histeq_filter_deps="gpl"
3023 hqdn3d_filter_deps="gpl"
3024 interlace_filter_deps="gpl"
3025 kerndeint_filter_deps="gpl"
3026 ladspa_filter_deps="ladspa dlopen"
3027 loudnorm_filter_deps="libebur128"
3028 mcdeint_filter_deps="avcodec gpl"
3029 movie_filter_deps="avcodec avformat"
3030 mpdecimate_filter_deps="gpl"
3031 mpdecimate_filter_select="pixelutils"
3032 mptestsrc_filter_deps="gpl"
3033 negate_filter_deps="lut_filter"
3034 nnedi_filter_deps="gpl"
3035 ocr_filter_deps="libtesseract"
3036 ocv_filter_deps="libopencv"
3037 owdenoise_filter_deps="gpl"
3038 pan_filter_deps="swresample"
3039 perspective_filter_deps="gpl"
3040 phase_filter_deps="gpl"
3041 pp7_filter_deps="gpl"
3042 pp_filter_deps="gpl postproc"
3043 pullup_filter_deps="gpl"
3044 removelogo_filter_deps="avcodec avformat swscale"
3045 repeatfields_filter_deps="gpl"
3046 resample_filter_deps="avresample"
3047 rubberband_filter_deps="librubberband"
3048 sab_filter_deps="gpl swscale"
3049 scale2ref_filter_deps="swscale"
3050 scale_filter_deps="swscale"
3051 select_filter_select="pixelutils"
3052 showcqt_filter_deps="avcodec avformat swscale"
3053 showcqt_filter_select="fft"
3054 showfreqs_filter_deps="avcodec"
3055 showfreqs_filter_select="fft"
3056 showspectrum_filter_deps="avcodec"
3057 showspectrum_filter_select="fft"
3058 showspectrumpic_filter_deps="avcodec"
3059 showspectrumpic_filter_select="fft"
3060 smartblur_filter_deps="gpl swscale"
3061 sofalizer_filter_deps="netcdf avcodec"
3062 sofalizer_filter_select="fft"
3063 spectrumsynth_filter_deps="avcodec"
3064 spectrumsynth_filter_select="fft"
3065 spp_filter_deps="gpl avcodec"
3066 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3067 stereo3d_filter_deps="gpl"
3068 subtitles_filter_deps="avformat avcodec libass"
3069 super2xsai_filter_deps="gpl"
3070 pixfmts_super2xsai_test_deps="super2xsai_filter"
3071 tinterlace_filter_deps="gpl"
3072 tinterlace_merge_test_deps="tinterlace_filter"
3073 tinterlace_pad_test_deps="tinterlace_filter"
3074 uspp_filter_deps="gpl avcodec"
3075 vidstabdetect_filter_deps="libvidstab"
3076 vidstabtransform_filter_deps="libvidstab"
3077 zmq_filter_deps="libzmq"
3078 zoompan_filter_deps="swscale"
3079 zscale_filter_deps="libzimg"
3080 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3081
3082 # examples
3083 avcodec_example_deps="avcodec avutil"
3084 avio_dir_cmd="avformat avutil"
3085 avio_reading="avformat avcodec avutil"
3086 decoding_encoding_example_deps="avcodec avformat avutil"
3087 demuxing_decoding_example_deps="avcodec avformat avutil"
3088 extract_mvs_example_deps="avcodec avformat avutil"
3089 filter_audio_example_deps="avfilter avutil"
3090 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3091 filtering_video_example_deps="avfilter avcodec avformat avutil"
3092 metadata_example_deps="avformat avutil"
3093 muxing_example_deps="avcodec avformat avutil swscale"
3094 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3095 remuxing_example_deps="avcodec avformat avutil"
3096 resampling_audio_example_deps="avutil swresample"
3097 scaling_video_example_deps="avutil swscale"
3098 transcode_aac_example_deps="avcodec avformat swresample"
3099 transcoding_example_deps="avfilter avcodec avformat avutil"
3100
3101 # libraries, in linking order
3102 avcodec_deps="avutil"
3103 avdevice_deps="avformat avcodec avutil"
3104 avfilter_deps="avutil"
3105 avformat_deps="avcodec avutil"
3106 avresample_deps="avutil"
3107 postproc_deps="avutil gpl"
3108 swresample_deps="avutil"
3109 swscale_deps="avutil"
3110
3111 # programs
3112 ffmpeg_deps="avcodec avfilter avformat swresample"
3113 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3114                null_filter
3115                setpts_filter trim_filter"
3116 ffplay_deps="avcodec avformat swscale swresample sdl"
3117 ffplay_libs='$sdl_libs'
3118 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3119 ffprobe_deps="avcodec avformat"
3120 ffserver_deps="avformat fork sarestart"
3121 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3122
3123 # documentation
3124 podpages_deps="perl"
3125 manpages_deps="perl pod2man"
3126 htmlpages_deps="perl"
3127 htmlpages_deps_any="makeinfo_html texi2html"
3128 txtpages_deps="perl makeinfo"
3129 doc_deps_any="manpages htmlpages podpages txtpages"
3130
3131 # default parameters
3132
3133 logfile="config.log"
3134
3135 # installation paths
3136 prefix_default="/usr/local"
3137 bindir_default='${prefix}/bin'
3138 datadir_default='${prefix}/share/ffmpeg'
3139 docdir_default='${prefix}/share/doc/ffmpeg'
3140 incdir_default='${prefix}/include'
3141 libdir_default='${prefix}/lib'
3142 mandir_default='${prefix}/share/man'
3143
3144 # toolchain
3145 ar_default="ar"
3146 cc_default="gcc"
3147 cxx_default="g++"
3148 host_cc_default="gcc"
3149 cp_f="cp -f"
3150 doxygen_default="doxygen"
3151 install="install"
3152 ln_s_default="ln -s -f"
3153 nm_default="nm -g"
3154 objformat="elf"
3155 pkg_config_default=pkg-config
3156 ranlib_default="ranlib"
3157 strip_default="strip"
3158 version_script='--version-script'
3159 yasmexe_default="yasm"
3160 windres_default="windres"
3161
3162 # OS
3163 target_os_default=$(tolower $(uname -s))
3164 host_os=$target_os_default
3165
3166 # machine
3167 if test "$target_os_default" = aix; then
3168     arch_default=$(uname -p)
3169     strip_default="strip -X32_64"
3170 else
3171     arch_default=$(uname -m)
3172 fi
3173 cpu="generic"
3174 intrinsics="none"
3175
3176 # configurable options
3177 enable $PROGRAM_LIST
3178 enable $DOCUMENT_LIST
3179 enable $EXAMPLE_LIST
3180 enable $(filter_out avresample $LIBRARY_LIST)
3181 enable stripping
3182
3183 enable asm
3184 enable debug
3185 enable doc
3186 enable faan faandct faanidct
3187 enable optimizations
3188 enable runtime_cpudetect
3189 enable safe_bitstream_reader
3190 enable static
3191 enable swscale_alpha
3192 enable valgrind_backtrace
3193
3194 sws_max_filter_size_default=256
3195 set_default sws_max_filter_size
3196
3197 # Enable platform codecs by default.
3198 enable audiotoolbox
3199
3200 # Enable hwaccels by default.
3201 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3202 enable xlib
3203
3204 enable vda_framework videotoolbox videotoolbox_encoder
3205
3206 # build settings
3207 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3208 LIBPREF="lib"
3209 LIBSUF=".a"
3210 FULLNAME='$(NAME)$(BUILDSUF)'
3211 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3212 SLIBPREF="lib"
3213 SLIBSUF=".so"
3214 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3215 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3216 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3217 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3218 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3219 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3220 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3221
3222 asflags_filter=echo
3223 cflags_filter=echo
3224 ldflags_filter=echo
3225
3226 AS_C='-c'
3227 AS_O='-o $@'
3228 CC_C='-c'
3229 CC_E='-E -o $@'
3230 CC_O='-o $@'
3231 CXX_C='-c'
3232 CXX_O='-o $@'
3233 OBJCC_C='-c'
3234 OBJCC_E='-E -o $@'
3235 OBJCC_O='-o $@'
3236 LD_O='-o $@'
3237 LD_LIB='-l%'
3238 LD_PATH='-L'
3239 HOSTCC_C='-c'
3240 HOSTCC_E='-E -o $@'
3241 HOSTCC_O='-o $@'
3242 HOSTLD_O='-o $@'
3243
3244 host_libs='-lm'
3245 host_cflags_filter=echo
3246 host_ldflags_filter=echo
3247
3248 target_path='$(CURDIR)'
3249
3250 # since the object filename is not given with the -MM flag, the compiler
3251 # is only able to print the basename, and we must add the path ourselves
3252 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3253 DEPFLAGS='-MM'
3254
3255 # find source path
3256 if test -f configure; then
3257     source_path=.
3258 else
3259     source_path=$(cd $(dirname "$0"); pwd)
3260     case "$source_path" in
3261         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3262     esac
3263     test -e "$source_path/config.h" &&
3264         die "Out of tree builds are impossible with config.h in source dir."
3265 fi
3266
3267 for v in "$@"; do
3268     r=${v#*=}
3269     l=${v%"$r"}
3270     r=$(sh_quote "$r")
3271     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3272 done
3273
3274 find_things(){
3275     thing=$1
3276     pattern=$2
3277     file=$source_path/$3
3278     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3279 }
3280
3281 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3282 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3283 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3284 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3285 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3286 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3287 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3288 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3289 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3290
3291 find_things_extern(){
3292     thing=$1
3293     pattern=$2
3294     file=$source_path/$3
3295     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3296 }
3297
3298 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3299 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3300
3301 ALL_COMPONENTS="
3302     $BSF_LIST
3303     $DECODER_LIST
3304     $DEMUXER_LIST
3305     $ENCODER_LIST
3306     $FILTER_LIST
3307     $HWACCEL_LIST
3308     $INDEV_LIST
3309     $MUXER_LIST
3310     $OUTDEV_LIST
3311     $PARSER_LIST
3312     $PROTOCOL_LIST
3313 "
3314
3315 for n in $COMPONENT_LIST; do
3316     v=$(toupper ${n%s})_LIST
3317     eval enable \$$v
3318     eval ${n}_if_any="\$$v"
3319 done
3320
3321 enable $ARCH_EXT_LIST
3322
3323 die_unknown(){
3324     echo "Unknown option \"$1\"."
3325     echo "See $0 --help for available options."
3326     exit 1
3327 }
3328
3329 print_in_columns() {
3330     cols=$(expr $ncols / 24)
3331     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3332 }
3333
3334 show_list() {
3335     suffix=_$1
3336     shift
3337     echo $* | sed s/$suffix//g | print_in_columns
3338     exit 0
3339 }
3340
3341 rand_list(){
3342     IFS=', '
3343     set -- $*
3344     unset IFS
3345     for thing; do
3346         comp=${thing%:*}
3347         prob=${thing#$comp}
3348         prob=${prob#:}
3349         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3350         echo "prob ${prob:-0.5}"
3351         printf '%s\n' $comp
3352     done
3353 }
3354
3355 do_random(){
3356     action=$1
3357     shift
3358     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3359     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3360 }
3361
3362 for opt do
3363     optval="${opt#*=}"
3364     case "$opt" in
3365         --extra-ldflags=*)
3366             add_ldflags $optval
3367         ;;
3368         --extra-ldexeflags=*)
3369             add_ldexeflags $optval
3370         ;;
3371         --extra-ldlibflags=*)
3372             add_ldlibflags $optval
3373         ;;
3374         --extra-libs=*)
3375             add_extralibs $optval
3376         ;;
3377         --disable-devices)
3378             disable $INDEV_LIST $OUTDEV_LIST
3379         ;;
3380         --enable-debug=*)
3381             debuglevel="$optval"
3382         ;;
3383         --disable-programs)
3384             disable $PROGRAM_LIST
3385         ;;
3386         --disable-everything)
3387             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3388         ;;
3389         --disable-all)
3390             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3391             disable $LIBRARY_LIST $PROGRAM_LIST doc
3392             enable avutil
3393         ;;
3394         --enable-random|--disable-random)
3395             action=${opt%%-random}
3396             do_random ${action#--} $COMPONENT_LIST
3397         ;;
3398         --enable-random=*|--disable-random=*)
3399             action=${opt%%-random=*}
3400             do_random ${action#--} $optval
3401         ;;
3402         --enable-*=*|--disable-*=*)
3403             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3404             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3405             eval list=\$$(toupper $thing)_LIST
3406             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3407             list=$(filter "$name" $list)
3408             [ "$list" = "" ] && warn "Option $opt did not match anything"
3409             $action $list
3410         ;;
3411         --enable-?*|--disable-?*)
3412             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3413             if is_in $option $COMPONENT_LIST; then
3414                 test $action = disable && action=unset
3415                 eval $action \$$(toupper ${option%s})_LIST
3416             elif is_in $option $CMDLINE_SELECT; then
3417                 $action $option
3418             else
3419                 die_unknown $opt
3420             fi
3421         ;;
3422         --list-*)
3423             NAME="${opt#--list-}"
3424             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3425             NAME=${NAME%s}
3426             eval show_list $NAME \$$(toupper $NAME)_LIST
3427         ;;
3428         --help|-h) show_help
3429         ;;
3430         --fatal-warnings) enable fatal_warnings
3431         ;;
3432         *)
3433             optname="${opt%%=*}"
3434             optname="${optname#--}"
3435             optname=$(echo "$optname" | sed 's/-/_/g')
3436             if is_in $optname $CMDLINE_SET; then
3437                 eval $optname='$optval'
3438             elif is_in $optname $CMDLINE_APPEND; then
3439                 append $optname "$optval"
3440             else
3441                 die_unknown $opt
3442             fi
3443         ;;
3444     esac
3445 done
3446
3447 for e in $env; do
3448     eval "export $e"
3449 done
3450
3451 disabled logging && logfile=/dev/null
3452
3453 # Disable all the library-specific components if the library itself
3454 # is disabled, see AVCODEC_LIST and following _LIST variables.
3455
3456 disable_components(){
3457     disabled ${1} && disable $(
3458         eval components="\$$(toupper ${1})_COMPONENTS"
3459         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3460     )
3461 }
3462
3463 map 'disable_components $v' $LIBRARY_LIST
3464
3465 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3466 set >> $logfile
3467
3468 test -n "$valgrind" && toolchain="valgrind-memcheck"
3469
3470 case "$toolchain" in
3471     *-asan)
3472         cc_default="${toolchain%-asan}"
3473         add_cflags  -fsanitize=address
3474         add_ldflags -fsanitize=address
3475     ;;
3476     *-msan)
3477         cc_default="${toolchain%-msan}"
3478         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3479         add_ldflags -fsanitize=memory
3480     ;;
3481     *-tsan)
3482         cc_default="${toolchain%-tsan}"
3483         add_cflags  -fsanitize=thread -pie
3484         add_ldflags -fsanitize=thread -pie
3485         case "$toolchain" in
3486             gcc-tsan)
3487                 add_cflags  -fPIC
3488                 add_ldflags -fPIC
3489                 ;;
3490         esac
3491     ;;
3492     *-usan)
3493         cc_default="${toolchain%-usan}"
3494         add_cflags  -fsanitize=undefined
3495         add_ldflags -fsanitize=undefined
3496     ;;
3497     valgrind-*)
3498         target_exec_default="valgrind"
3499         case "$toolchain" in
3500             valgrind-massif)
3501                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3502                 ;;
3503             valgrind-memcheck)
3504                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3505                 ;;
3506         esac
3507     ;;
3508     msvc)
3509         # Check whether the current MSVC version needs the C99 converter.
3510         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3511         # support enough of C99 to build ffmpeg. Default to the new
3512         # behaviour if the regexp was unable to match anything, since this
3513         # successfully parses the version number of existing supported
3514         # versions that require the converter (MSVC 2010 and 2012).
3515         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3516         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3517             cc_default="cl"
3518         else
3519             cc_default="c99wrap cl"
3520         fi
3521         ld_default="$source_path/compat/windows/mslink"
3522         nm_default="dumpbin -symbols"
3523         ar_default="lib"
3524         case "$arch" in
3525         arm*)
3526             as_default="armasm"
3527             ;;
3528         esac
3529         target_os_default="win32"
3530         # Use a relative path for TMPDIR. This makes sure all the
3531         # ffconf temp files are written with a relative path, avoiding
3532         # issues with msys/win32 path conversion for MSVC parameters
3533         # such as -Fo<file> or -out:<file>.
3534         TMPDIR=.
3535     ;;
3536     icl)
3537         cc_default="icl"
3538         ld_default="xilink"
3539         nm_default="dumpbin -symbols"
3540         ar_default="xilib"
3541         target_os_default="win32"
3542         TMPDIR=.
3543     ;;
3544     gcov)
3545         add_cflags  -fprofile-arcs -ftest-coverage
3546         add_ldflags -fprofile-arcs -ftest-coverage
3547     ;;
3548     llvm-cov)
3549         add_cflags -fprofile-arcs -ftest-coverage
3550         add_ldflags --coverage
3551     ;;
3552     hardened)
3553         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3554         add_cflags   -fno-strict-overflow -fstack-protector-all
3555         add_ldflags  -Wl,-z,relro -Wl,-z,now
3556     ;;
3557     ?*)
3558         die "Unknown toolchain $toolchain"
3559     ;;
3560 esac
3561
3562 test -n "$cross_prefix" && enable cross_compile
3563
3564 if enabled cross_compile; then
3565     test -n "$arch" && test -n "$target_os" ||
3566         die "Must specify target arch and OS when cross-compiling"
3567 fi
3568
3569 ar_default="${cross_prefix}${ar_default}"
3570 cc_default="${cross_prefix}${cc_default}"
3571 cxx_default="${cross_prefix}${cxx_default}"
3572 nm_default="${cross_prefix}${nm_default}"
3573 pkg_config_default="${cross_prefix}${pkg_config_default}"
3574 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3575     ranlib_default="${cross_prefix}${ranlib_default} -D"
3576 else
3577     ranlib_default="${cross_prefix}${ranlib_default}"
3578 fi
3579 strip_default="${cross_prefix}${strip_default}"
3580 windres_default="${cross_prefix}${windres_default}"
3581
3582 sysinclude_default="${sysroot}/usr/include"
3583
3584 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3585     target_exec target_os yasmexe
3586 enabled cross_compile || host_cc_default=$cc
3587 set_default host_cc
3588
3589 pkg_config_fail_message=""
3590 if ! $pkg_config --version >/dev/null 2>&1; then
3591     warn "$pkg_config not found, library detection may fail."
3592     pkg_config=false
3593 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3594     pkg_config_fail_message="
3595 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3596 fi
3597
3598 if test $doxygen != $doxygen_default && \
3599   ! $doxygen --version >/dev/null 2>&1; then
3600     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3601 fi
3602
3603 exesuf() {
3604     case $1 in
3605         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3606     esac
3607 }
3608
3609 EXESUF=$(exesuf $target_os)
3610 HOSTEXESUF=$(exesuf $host_os)
3611
3612 # set temporary file name
3613 : ${TMPDIR:=$TEMPDIR}
3614 : ${TMPDIR:=$TMP}
3615 : ${TMPDIR:=/tmp}
3616
3617 if [ -n "$tempprefix" ] ; then
3618     mktemp(){
3619         echo $tempprefix.${HOSTNAME}.${UID}
3620     }
3621 elif ! check_cmd mktemp -u XXXXXX; then
3622     # simple replacement for missing mktemp
3623     # NOT SAFE FOR GENERAL USE
3624     mktemp(){
3625         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3626     }
3627 fi
3628
3629 tmpfile(){
3630     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3631         (set -C; exec > $tmp) 2>/dev/null ||
3632         die "Unable to create temporary file in $TMPDIR."
3633     append TMPFILES $tmp
3634     eval $1=$tmp
3635 }
3636
3637 trap 'rm -f -- $TMPFILES' EXIT
3638
3639 tmpfile TMPASM .asm
3640 tmpfile TMPC   .c
3641 tmpfile TMPCPP .cpp
3642 tmpfile TMPE   $EXESUF
3643 tmpfile TMPH   .h
3644 tmpfile TMPM   .m
3645 tmpfile TMPO   .o
3646 tmpfile TMPS   .S
3647 tmpfile TMPSH  .sh
3648 tmpfile TMPV   .ver
3649
3650 unset -f mktemp
3651
3652 chmod +x $TMPE
3653
3654 # make sure we can execute files in $TMPDIR
3655 cat > $TMPSH 2>> $logfile <<EOF
3656 #! /bin/sh
3657 EOF
3658 chmod +x $TMPSH >> $logfile 2>&1
3659 if ! $TMPSH >> $logfile 2>&1; then
3660     cat <<EOF
3661 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3662 variable to another directory and make sure that it is not mounted noexec.
3663 EOF
3664     die "Sanity test failed."
3665 fi
3666
3667 armasm_flags(){
3668     for flag; do
3669         case $flag in
3670             # Filter out MSVC cl.exe options from cflags that shouldn't
3671             # be passed to gas-preprocessor
3672             -M[TD]*)                                            ;;
3673             *)                  echo $flag                      ;;
3674         esac
3675    done
3676 }
3677
3678 ccc_flags(){
3679     for flag; do
3680         case $flag in
3681             -std=c99)           echo -c99                       ;;
3682             -mcpu=*)            echo -arch ${flag#*=}           ;;
3683             -mieee)             echo -ieee                      ;;
3684             -O*|-fast)          echo $flag                      ;;
3685             -fno-math-errno)    echo -assume nomath_errno       ;;
3686             -g)                 echo -g3                        ;;
3687             -Wall)              echo -msg_enable level2         ;;
3688             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3689             -Wl,*)              echo $flag                      ;;
3690             -f*|-W*)                                            ;;
3691             *)                  echo $flag                      ;;
3692         esac
3693    done
3694 }
3695
3696 cparser_flags(){
3697     for flag; do
3698         case $flag in
3699             -Wno-switch)             echo -Wno-switch-enum ;;
3700             -Wno-format-zero-length) ;;
3701             -Wdisabled-optimization) ;;
3702             -Wno-pointer-sign)       echo -Wno-other ;;
3703             *)                       echo $flag ;;
3704         esac
3705     done
3706 }
3707
3708 msvc_common_flags(){
3709     for flag; do
3710         case $flag in
3711             # In addition to specifying certain flags under the compiler
3712             # specific filters, they must be specified here as well or else the
3713             # generic catch all at the bottom will print the original flag.
3714             -Wall)                ;;
3715             -std=c99)             ;;
3716             # Common flags
3717             -fomit-frame-pointer) ;;
3718             -g)                   echo -Z7 ;;
3719             -fno-math-errno)      ;;
3720             -fno-common)          ;;
3721             -fno-signed-zeros)    ;;
3722             -fPIC)                ;;
3723             -mthumb)              ;;
3724             -march=*)             ;;
3725             -lz)                  echo zlib.lib ;;
3726             -lavifil32)           echo vfw32.lib ;;
3727             -lavicap32)           echo vfw32.lib user32.lib ;;
3728             -lx264)               echo libx264.lib ;;
3729             -l*)                  echo ${flag#-l}.lib ;;
3730             -LARGEADDRESSAWARE)   echo $flag ;;
3731             -L*)                  echo -libpath:${flag#-L} ;;
3732             *)                    echo $flag ;;
3733         esac
3734     done
3735 }
3736
3737 msvc_flags(){
3738     msvc_common_flags "$@"
3739     for flag; do
3740         case $flag in
3741             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3742                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3743                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3744                                        -wd4307 \
3745                                        -wd4273 -wd4554 -wd4701 ;;
3746         esac
3747     done
3748 }
3749
3750 icl_flags(){
3751     msvc_common_flags "$@"
3752     for flag; do
3753         case $flag in
3754             # Despite what Intel's documentation says -Wall, which is supported
3755             # on Windows, does enable remarks so disable them here.
3756             -Wall)                echo $flag -Qdiag-disable:remark ;;
3757             -std=c99)             echo -Qstd=c99 ;;
3758             -flto)                echo -ipo ;;
3759         esac
3760     done
3761 }
3762
3763 icc_flags(){
3764     for flag; do
3765         case $flag in
3766             -flto)                echo -ipo ;;
3767             *)                    echo $flag ;;
3768         esac
3769     done
3770 }
3771
3772 pgi_flags(){
3773     for flag; do
3774         case $flag in
3775             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3776             -fomit-frame-pointer) echo -Mnoframe ;;
3777             -g)                   echo -gopt ;;
3778             *)                    echo $flag ;;
3779         esac
3780     done
3781 }
3782
3783 suncc_flags(){
3784     for flag; do
3785         case $flag in
3786             -march=*|-mcpu=*)
3787                 case "${flag#*=}" in
3788                     native)                   echo -xtarget=native       ;;
3789                     v9|niagara)               echo -xarch=sparc          ;;
3790                     ultrasparc)               echo -xarch=sparcvis       ;;
3791                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3792                     i586|pentium)             echo -xchip=pentium        ;;
3793                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3794                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3795                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3796                     pentium4*)          echo -xtarget=pentium4           ;;
3797                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3798                     *-sse3)             echo -xarch=sse3                 ;;
3799                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3800                     bonnell)                   echo -xarch=ssse3         ;;
3801                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3802                     westmere)                  echo -xtarget=westmere    ;;
3803                     silvermont)                echo -xarch=sse4_2        ;;
3804                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3805                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3806                                                echo -xarch=avx           ;;
3807                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3808                     btver1)                    echo -xarch=amdsse4a      ;;
3809                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3810                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3811                     k8|opteron|athlon64|athlon-fx)
3812                                                echo -xarch=sse2a         ;;
3813                     athlon*)                   echo -xarch=pentium_proa  ;;
3814                 esac
3815                 ;;
3816             -std=c99)             echo -xc99              ;;
3817             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3818             -fPIC)                echo -KPIC -xcode=pic32 ;;
3819             -W*,*)                echo $flag              ;;
3820             -f*-*|-W*|-mimpure-text)                      ;;
3821             -shared)              echo -G                 ;;
3822             *)                    echo $flag              ;;
3823         esac
3824     done
3825 }
3826
3827 tms470_flags(){
3828     for flag; do
3829         case $flag in
3830             -march=*|-mcpu=*)
3831                 case "${flag#*=}" in
3832                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3833                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3834                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3835                     armv6*|arm11*)          echo -mv=6   ;;
3836                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3837                                             echo -mv=5e  ;;
3838                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3839                 esac
3840                 ;;
3841             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3842             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3843             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3844             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3845             -msoft-float)   echo --float_support=vfplib       ;;
3846             -O[0-3]|-mf=*)  echo $flag                        ;;
3847             -g)             echo -g -mn                       ;;
3848             -pds=*)         echo $flag                        ;;
3849             -D*|-I*)        echo $flag                        ;;
3850             --gcc|--abi=*)  echo $flag                        ;;
3851             -me)            echo $flag                        ;;
3852         esac
3853     done
3854 }
3855
3856 probe_cc(){
3857     pfx=$1
3858     _cc=$2
3859     first=$3
3860
3861     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3862     unset _ld_o _ldflags _ld_lib _ld_path
3863     unset _depflags _DEPCMD _DEPFLAGS
3864     _flags_filter=echo
3865
3866     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3867         true # no-op to avoid reading stdin in following checks
3868     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3869         _type=llvm_gcc
3870         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3871         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3872         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3873         _cflags_speed='-O3'
3874         _cflags_size='-Os'
3875     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3876         _type=gcc
3877         gcc_version=$($_cc --version | head -n1)
3878         gcc_basever=$($_cc -dumpversion)
3879         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3880         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3881         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3882         case $gcc_basever in
3883             2) ;;
3884             2.*) ;;
3885             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3886         esac
3887         if [ "$first" = true ]; then
3888             case $gcc_basever in
3889                 4.2*)
3890                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3891             esac
3892         fi
3893         _cflags_speed='-O3'
3894         _cflags_size='-Os'
3895     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3896         _type=icc
3897         _ident=$($_cc --version | head -n1)
3898         _depflags='-MMD'
3899         _cflags_speed='-O3'
3900         _cflags_size='-Os'
3901         _cflags_noopt='-O1'
3902         _flags_filter=icc_flags
3903     elif $_cc -v 2>&1 | grep -q xlc; then
3904         _type=xlc
3905         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3906         _cflags_speed='-O5'
3907         _cflags_size='-O5 -qcompact'
3908     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3909         _type=ccc
3910         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3911         _DEPFLAGS='-M'
3912         _cflags_speed='-fast'
3913         _cflags_size='-O1'
3914         _flags_filter=ccc_flags
3915     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3916         test -d "$sysroot" || die "No valid sysroot specified."
3917         _type=armcc
3918         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3919         armcc_conf="$PWD/armcc.conf"
3920         $_cc --arm_linux_configure                 \
3921              --arm_linux_config_file="$armcc_conf" \
3922              --configure_sysroot="$sysroot"        \
3923              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3924              die "Error creating armcc configuration file."
3925         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3926         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3927         as_default="${cross_prefix}gcc"
3928         _depflags='-MMD'
3929         _cflags_speed='-O3'
3930         _cflags_size='-Os'
3931     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3932         _type=tms470
3933         _ident=$($_cc -version | head -n1 | tr -s ' ')
3934         _flags='--gcc --abi=eabi -me'
3935         _cc_e='-ppl -fe=$@'
3936         _cc_o='-fe=$@'
3937         _depflags='-ppa -ppd=$(@:.o=.d)'
3938         _cflags_speed='-O3 -mf=5'
3939         _cflags_size='-O3 -mf=2'
3940         _flags_filter=tms470_flags
3941     elif $_cc -v 2>&1 | grep -q clang; then
3942         _type=clang
3943         _ident=$($_cc --version 2>/dev/null | head -n1)
3944         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3945         _cflags_speed='-O3'
3946         _cflags_size='-Os'
3947     elif $_cc -V 2>&1 | grep -q Sun; then
3948         _type=suncc
3949         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3950         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3951         _DEPFLAGS='-xM1 -xc99'
3952         _ldflags='-std=c99'
3953         _cflags_speed='-O5'
3954         _cflags_size='-O5 -xspace'
3955         _flags_filter=suncc_flags
3956     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3957         _type=pathscale
3958         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3959         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3960         _cflags_speed='-O2'
3961         _cflags_size='-Os'
3962         _flags_filter='filter_out -Wdisabled-optimization'
3963     elif $_cc -v 2>&1 | grep -q Open64; then
3964         _type=open64
3965         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3966         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3967         _cflags_speed='-O2'
3968         _cflags_size='-Os'
3969         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3970     elif $_cc -V 2>&1 | grep -q Portland; then
3971         _type=pgi
3972         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3973         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3974         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3975         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3976         _cflags_noopt="-O"
3977         _flags_filter=pgi_flags
3978     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3979         _type=armasm
3980         _ident=$($_cc | head -n1)
3981         # 4509: "This form of conditional instruction is deprecated"
3982         _flags="-nologo -ignore 4509"
3983         _flags_filter=armasm_flags
3984     elif $_cc 2>&1 | grep -q Intel; then
3985         _type=icl
3986         _ident=$($_cc 2>&1 | head -n1)
3987         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3988         # Not only is O3 broken on 13.x+ but it is slower on all previous
3989         # versions (tested) as well.
3990         _cflags_speed="-O2"
3991         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3992         if $_cc 2>&1 | grep -q Linker; then
3993             _ld_o='-out:$@'
3994         else
3995             _ld_o='-Fe$@'
3996         fi
3997         _cc_o='-Fo$@'
3998         _cc_e='-P'
3999         _flags_filter=icl_flags
4000         _ld_lib='lib%.a'
4001         _ld_path='-libpath:'
4002         # -Qdiag-error to make icl error when seeing certain unknown arguments
4003         _flags='-nologo -Qdiag-error:4044,10157'
4004         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4005         # with MSVC which enables it by default.
4006         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4007         disable stripping
4008     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4009         _type=msvc
4010         _ident=$($_cc 2>&1 | head -n1)
4011         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4012         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4013         _cflags_speed="-O2"
4014         _cflags_size="-O1"
4015         if $_cc -nologo- 2>&1 | grep -q Linker; then
4016             _ld_o='-out:$@'
4017         else
4018             _ld_o='-Fe$@'
4019         fi
4020         _cc_o='-Fo$@'
4021         _cc_e='-P -Fi$@'
4022         _flags_filter=msvc_flags
4023         _ld_lib='lib%.a'
4024         _ld_path='-libpath:'
4025         _flags='-nologo'
4026         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4027         disable stripping
4028     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4029         _type=cparser
4030         _ident=$($_cc --version | head -n1)
4031         _depflags='-MMD'
4032         _cflags_speed='-O4'
4033         _cflags_size='-O2'
4034         _flags_filter=cparser_flags
4035     fi
4036
4037     eval ${pfx}_type=\$_type
4038     eval ${pfx}_ident=\$_ident
4039 }
4040
4041 set_ccvars(){
4042     eval ${1}_C=\${_cc_c-\${${1}_C}}
4043     eval ${1}_E=\${_cc_e-\${${1}_E}}
4044     eval ${1}_O=\${_cc_o-\${${1}_O}}
4045
4046     if [ -n "$_depflags" ]; then
4047         eval ${1}_DEPFLAGS=\$_depflags
4048     else
4049         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4050         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4051         eval DEP${1}FLAGS=\$_flags
4052     fi
4053 }
4054
4055 probe_cc cc "$cc" "true"
4056 cflags_filter=$_flags_filter
4057 cflags_speed=$_cflags_speed
4058 cflags_size=$_cflags_size
4059 cflags_noopt=$_cflags_noopt
4060 add_cflags $_flags $_cflags
4061 cc_ldflags=$_ldflags
4062 set_ccvars CC
4063
4064 probe_cc hostcc "$host_cc"
4065 host_cflags_filter=$_flags_filter
4066 add_host_cflags  $_flags $_cflags
4067 set_ccvars HOSTCC
4068
4069 test -n "$cc_type" && enable $cc_type ||
4070     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4071
4072 : ${as_default:=$cc}
4073 : ${objcc_default:=$cc}
4074 : ${dep_cc_default:=$cc}
4075 : ${ld_default:=$cc}
4076 : ${host_ld_default:=$host_cc}
4077 set_default ar as objcc dep_cc ld ln_s host_ld windres
4078
4079 probe_cc as "$as"
4080 asflags_filter=$_flags_filter
4081 add_asflags $_flags $_cflags
4082 set_ccvars AS
4083
4084 probe_cc objcc "$objcc"
4085 objcflags_filter=$_flags_filter
4086 add_objcflags $_flags $_cflags
4087 set_ccvars OBJC
4088
4089 probe_cc ld "$ld"
4090 ldflags_filter=$_flags_filter
4091 add_ldflags $_flags $_ldflags
4092 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4093 LD_O=${_ld_o-$LD_O}
4094 LD_LIB=${_ld_lib-$LD_LIB}
4095 LD_PATH=${_ld_path-$LD_PATH}
4096
4097 probe_cc hostld "$host_ld"
4098 host_ldflags_filter=$_flags_filter
4099 add_host_ldflags $_flags $_ldflags
4100 HOSTLD_O=${_ld_o-$HOSTLD_O}
4101
4102 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4103     probe_cc depcc "$dep_cc"
4104     CCDEP=${_DEPCMD:-$DEPCMD}
4105     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4106     DEPCCFLAGS=$_flags
4107 fi
4108
4109 if $ar 2>&1 | grep -q Microsoft; then
4110     arflags="-nologo"
4111     ar_o='-out:$@'
4112 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4113     arflags="rq"
4114     ar_o='$@'
4115 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4116     arflags='-Xany -r -c'
4117     ar_o='$@'
4118 elif $ar 2>&1 | grep -q "\[D\] "; then
4119     arflags="rcD"
4120     ar_o='$@'
4121 else
4122     arflags="rc"
4123     ar_o='$@'
4124 fi
4125
4126 add_cflags $extra_cflags
4127 add_cxxflags $extra_cxxflags
4128 add_objcflags $extra_objcflags
4129 add_asflags $extra_cflags
4130
4131 if test -n "$sysroot"; then
4132     case "$cc_type" in
4133         gcc|llvm_gcc|clang)
4134             add_cppflags --sysroot="$sysroot"
4135             add_ldflags --sysroot="$sysroot"
4136 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4137             add_cppflags -isysroot "$sysroot"
4138             add_ldflags -isysroot "$sysroot"
4139         ;;
4140         tms470)
4141             add_cppflags -I"$sysinclude"
4142             add_ldflags  --sysroot="$sysroot"
4143         ;;
4144     esac
4145 fi
4146
4147 if test "$cpu" = host; then
4148     enabled cross_compile &&
4149         die "--cpu=host makes no sense when cross-compiling."
4150
4151     case "$cc_type" in
4152         gcc|llvm_gcc)
4153             check_native(){
4154                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4155                 sed -n "/cc1.*$1=/{
4156                             s/.*$1=\\([^ ]*\\).*/\\1/
4157                             p
4158                             q
4159                         }" $TMPE
4160             }
4161             cpu=$(check_native -march || check_native -mcpu)
4162         ;;
4163         clang)
4164             check_native(){
4165                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4166                 sed -n "/cc1.*-target-cpu /{
4167                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4168                             p
4169                             q
4170                         }" $TMPE
4171             }
4172             cpu=$(check_native -march)
4173         ;;
4174     esac
4175
4176     test "${cpu:-host}" = host &&
4177         die "--cpu=host not supported with compiler $cc"
4178 fi
4179
4180 # Deal with common $arch aliases
4181 case "$arch" in
4182     aarch64|arm64)
4183         arch="aarch64"
4184     ;;
4185     arm*|iPad*|iPhone*)
4186         arch="arm"
4187     ;;
4188     mips*|IP*)
4189         case "$arch" in
4190         *el)
4191             add_cppflags -EL
4192             add_ldflags -EL
4193         ;;
4194         *eb)
4195             add_cppflags -EB
4196             add_ldflags -EB
4197         ;;
4198         esac
4199         arch="mips"
4200     ;;
4201     parisc*|hppa*)
4202         arch="parisc"
4203     ;;
4204     "Power Macintosh"|ppc*|powerpc*)
4205         arch="ppc"
4206     ;;
4207     s390|s390x)
4208         arch="s390"
4209     ;;
4210     sh4|sh)
4211         arch="sh4"
4212     ;;
4213     sun4u|sparc*)
4214         arch="sparc"
4215     ;;
4216     tilegx|tile-gx)
4217         arch="tilegx"
4218     ;;
4219     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4220         arch="x86"
4221     ;;
4222 esac
4223
4224 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4225 enable $arch
4226
4227 # Add processor-specific flags
4228 if enabled aarch64; then
4229
4230     case $cpu in
4231         armv*)
4232             cpuflags="-march=$cpu"
4233         ;;
4234         *)
4235             cpuflags="-mcpu=$cpu"
4236         ;;
4237     esac
4238
4239 elif enabled alpha; then
4240
4241     cpuflags="-mcpu=$cpu"
4242
4243 elif enabled arm; then
4244
4245     check_arm_arch() {
4246         check_cpp_condition stddef.h \
4247             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4248             $cpuflags
4249     }
4250
4251     probe_arm_arch() {
4252         if   check_arm_arch 4;        then echo armv4
4253         elif check_arm_arch 4T;       then echo armv4t
4254         elif check_arm_arch 5;        then echo armv5
4255         elif check_arm_arch 5E;       then echo armv5e
4256         elif check_arm_arch 5T;       then echo armv5t
4257         elif check_arm_arch 5TE;      then echo armv5te
4258         elif check_arm_arch 5TEJ;     then echo armv5te
4259         elif check_arm_arch 6;        then echo armv6
4260         elif check_arm_arch 6J;       then echo armv6j
4261         elif check_arm_arch 6K;       then echo armv6k
4262         elif check_arm_arch 6Z;       then echo armv6z
4263         elif check_arm_arch 6ZK;      then echo armv6zk
4264         elif check_arm_arch 6T2;      then echo armv6t2
4265         elif check_arm_arch 7;        then echo armv7
4266         elif check_arm_arch 7A  7_A;  then echo armv7-a
4267         elif check_arm_arch 7S;       then echo armv7-a
4268         elif check_arm_arch 7R  7_R;  then echo armv7-r
4269         elif check_arm_arch 7M  7_M;  then echo armv7-m
4270         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4271         elif check_arm_arch 8A  8_A;  then echo armv8-a
4272         fi
4273     }
4274
4275     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4276
4277     case $cpu in
4278         armv*)
4279             cpuflags="-march=$cpu"
4280             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4281         ;;
4282         *)
4283             cpuflags="-mcpu=$cpu"
4284             case $cpu in
4285                 cortex-a*)                               subarch=armv7a  ;;
4286                 cortex-r*)                               subarch=armv7r  ;;
4287                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4288                 arm11*)                                  subarch=armv6   ;;
4289                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4290                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4291                 *)                             subarch=$(probe_arm_arch) ;;
4292             esac
4293         ;;
4294     esac
4295
4296     case "$subarch" in
4297         armv5t*)    enable fast_clz                ;;
4298         armv[6-8]*)
4299             enable fast_clz
4300             disabled fast_unaligned || enable fast_unaligned
4301             ;;
4302     esac
4303
4304 elif enabled avr32; then
4305
4306     case $cpu in
4307         ap7[02]0[0-2])
4308             subarch="avr32_ap"
4309             cpuflags="-mpart=$cpu"
4310         ;;
4311         ap)
4312             subarch="avr32_ap"
4313             cpuflags="-march=$cpu"
4314         ;;
4315         uc3[ab]*)
4316             subarch="avr32_uc"
4317             cpuflags="-mcpu=$cpu"
4318         ;;
4319         uc)
4320             subarch="avr32_uc"
4321             cpuflags="-march=$cpu"
4322         ;;
4323     esac
4324
4325 elif enabled bfin; then
4326
4327     cpuflags="-mcpu=$cpu"
4328
4329 elif enabled mips; then
4330
4331     cpuflags="-march=$cpu"
4332
4333     if [ "$cpu" != "generic" ]; then
4334         disable mips32r2
4335         disable mips32r5
4336         disable mips64r2
4337         disable mips32r6
4338         disable mips64r6
4339         disable loongson2
4340         disable loongson3
4341
4342         case $cpu in
4343             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4344                 enable mips32r2
4345                 disable msa
4346             ;;
4347             p5600|i6400)
4348                 disable mipsdsp
4349                 disable mipsdspr2
4350             ;;
4351             loongson*)
4352                 enable loongson2
4353                 enable loongson3
4354                 enable local_aligned_8 local_aligned_16 local_aligned_32
4355                 enable simd_align_16
4356                 enable fast_64bit
4357                 enable fast_clz
4358                 enable fast_cmov
4359                 enable fast_unaligned
4360                 disable aligned_stack
4361                 case $cpu in
4362                     loongson3*)
4363                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4364                     ;;
4365                     loongson2e)
4366                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4367                     ;;
4368                     loongson2f)
4369                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4370                     ;;
4371                 esac
4372             ;;
4373             *)
4374                 # Unknown CPU. Disable everything.
4375                 warn "unknown CPU. Disabling all MIPS optimizations."
4376                 disable mipsfpu
4377                 disable mipsdsp
4378                 disable mipsdspr2
4379                 disable msa
4380                 disable mmi
4381             ;;
4382         esac
4383
4384         case $cpu in
4385             24kc)
4386                 disable mipsfpu
4387                 disable mipsdsp
4388                 disable mipsdspr2
4389             ;;
4390             24kf*)
4391                 disable mipsdsp
4392                 disable mipsdspr2
4393             ;;
4394             24kec|34kc|1004kc)
4395                 disable mipsfpu
4396                 disable mipsdspr2
4397             ;;
4398             24kef*|34kf*|1004kf*)
4399                 disable mipsdspr2
4400             ;;
4401             74kc)
4402                 disable mipsfpu
4403             ;;
4404             p5600)
4405                 enable mips32r5
4406                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4407             ;;
4408             i6400)
4409                 enable mips64r6
4410                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4411             ;;
4412         esac
4413     else
4414         # We do not disable anything. Is up to the user to disable the unwanted features.
4415         warn 'generic cpu selected'
4416     fi
4417
4418 elif enabled ppc; then
4419
4420     disable ldbrx
4421
4422     case $(tolower $cpu) in
4423         601|ppc601|powerpc601)
4424             cpuflags="-mcpu=601"
4425             disable altivec
4426         ;;
4427         603*|ppc603*|powerpc603*)
4428             cpuflags="-mcpu=603"
4429             disable altivec
4430         ;;
4431         604*|ppc604*|powerpc604*)
4432             cpuflags="-mcpu=604"
4433             disable altivec
4434         ;;
4435         g3|75*|ppc75*|powerpc75*)
4436             cpuflags="-mcpu=750"
4437             disable altivec
4438         ;;
4439         g4|745*|ppc745*|powerpc745*)
4440             cpuflags="-mcpu=7450"
4441             disable vsx
4442         ;;
4443         74*|ppc74*|powerpc74*)
4444             cpuflags="-mcpu=7400"
4445             disable vsx
4446         ;;
4447         g5|970|ppc970|powerpc970)
4448             cpuflags="-mcpu=970"
4449             disable vsx
4450         ;;
4451         power[3-6]*)
4452             cpuflags="-mcpu=$cpu"
4453             disable vsx
4454         ;;
4455         power[7-8]*)
4456             cpuflags="-mcpu=$cpu"
4457         ;;
4458         cell)
4459             cpuflags="-mcpu=cell"
4460             enable ldbrx
4461             disable vsx
4462         ;;
4463         e500mc)
4464             cpuflags="-mcpu=e500mc"
4465             disable altivec
4466         ;;
4467         e500v2)
4468             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4469             disable altivec
4470             disable dcbzl
4471         ;;
4472         e500)
4473             cpuflags="-mcpu=8540 -mhard-float"
4474             disable altivec
4475             disable dcbzl
4476         ;;
4477     esac
4478
4479 elif enabled sparc; then
4480
4481     case $cpu in
4482         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4483             cpuflags="-mcpu=$cpu"
4484         ;;
4485         ultrasparc*|niagara[234])
4486             cpuflags="-mcpu=$cpu"
4487         ;;
4488     esac
4489
4490 elif enabled x86; then
4491
4492     case $cpu in
4493         i[345]86|pentium)
4494             cpuflags="-march=$cpu"
4495             disable i686
4496             disable mmx
4497         ;;
4498         # targets that do NOT support nopl and conditional mov (cmov)
4499         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4500             cpuflags="-march=$cpu"
4501             disable i686
4502         ;;
4503         # targets that do support nopl and conditional mov (cmov)
4504         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4505         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4506         |amdfam10|barcelona|b[dt]ver*|znver*)
4507             cpuflags="-march=$cpu"
4508             enable i686
4509             enable fast_cmov
4510         ;;
4511         # targets that do support conditional mov but on which it's slow
4512         pentium4|pentium4m|prescott|nocona)
4513             cpuflags="-march=$cpu"
4514             enable i686
4515             disable fast_cmov
4516         ;;
4517     esac
4518
4519 fi
4520
4521 if [ "$cpu" != generic ]; then
4522     add_cflags  $cpuflags
4523     add_asflags $cpuflags
4524     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4525 fi
4526
4527 # compiler sanity check
4528 check_exec <<EOF
4529 int main(void){ return 0; }
4530 EOF
4531 if test "$?" != 0; then
4532     echo "$cc is unable to create an executable file."
4533     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4534         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4535         echo "Only do this if you know what cross compiling means."
4536     fi
4537     die "C compiler test failed."
4538 fi
4539
4540 add_cppflags -D_ISOC99_SOURCE
4541 add_cxxflags -D__STDC_CONSTANT_MACROS
4542 add_cxxflags -std=c++98
4543 check_cflags -std=c99
4544 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4545 #include <stdlib.h>
4546 EOF
4547 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4548 #include <stdlib.h>
4549 EOF
4550
4551 add_host_cppflags -D_ISOC99_SOURCE
4552 check_host_cflags -std=c99
4553 check_host_cflags -Wall
4554 check_host_cflags -O3
4555
4556 check_64bit(){
4557     arch32=$1
4558     arch64=$2
4559     expr=$3
4560     check_code cc "" "int test[2*($expr) - 1]" &&
4561         subarch=$arch64 || subarch=$arch32
4562 }
4563
4564 case "$arch" in
4565     aarch64|alpha|ia64)
4566         spic=$shared
4567     ;;
4568     mips)
4569         check_64bit mips mips64 '_MIPS_SIM > 1'
4570         spic=$shared
4571     ;;
4572     parisc)
4573         check_64bit parisc parisc64 'sizeof(void *) > 4'
4574         spic=$shared
4575     ;;
4576     ppc)
4577         check_64bit ppc ppc64 'sizeof(void *) > 4'
4578         spic=$shared
4579     ;;
4580     s390)
4581         check_64bit s390 s390x 'sizeof(void *) > 4'
4582         spic=$shared
4583     ;;
4584     sparc)
4585         check_64bit sparc sparc64 'sizeof(void *) > 4'
4586         spic=$shared
4587     ;;
4588     x86)
4589         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4590         # Treat x32 as x64 for now. Note it also needs spic=$shared
4591         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4592             subarch=x86_64
4593         if test "$subarch" = "x86_64"; then
4594             spic=$shared
4595         fi
4596     ;;
4597     ppc)
4598         check_cc <<EOF && subarch="ppc64"
4599         int test[(int)sizeof(char*) - 7];
4600 EOF
4601     ;;
4602 esac
4603
4604 enable $subarch
4605 enabled spic && enable_weak pic
4606
4607 # OS specific
4608 case $target_os in
4609     aix)
4610         SHFLAGS=-shared
4611         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4612         enabled shared && add_ldflags -Wl,-brtl
4613         ;;
4614     android)
4615         disable symver
4616         enable section_data_rel_ro
4617         SLIB_INSTALL_NAME='$(SLIBNAME)'
4618         SLIB_INSTALL_LINKS=
4619         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4620         ;;
4621     haiku)
4622         prefix_default="/boot/common"
4623         network_extralibs="-lnetwork"
4624         host_libs=
4625         ;;
4626     sunos)
4627         SHFLAGS='-shared -Wl,-h,$$(@F)'
4628         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4629         network_extralibs="-lsocket -lnsl"
4630         add_cppflags -D__EXTENSIONS__
4631         # When using suncc to build, the Solaris linker will mark
4632         # an executable with each instruction set encountered by
4633         # the Solaris assembler.  As our libraries contain their own
4634         # guards for processor-specific code, instead suppress
4635         # generation of the HWCAPS ELF section on Solaris x86 only.
4636         enabled_all suncc x86 &&
4637             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4638             add_ldflags -Wl,-M,mapfile
4639         nm_default='nm -P -g'
4640         version_script='-M'
4641         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4642         ;;
4643     netbsd)
4644         disable symver
4645         oss_indev_extralibs="-lossaudio"
4646         oss_outdev_extralibs="-lossaudio"
4647         enabled gcc || check_ldflags -Wl,-zmuldefs
4648         ;;
4649     openbsd|bitrig)
4650         disable symver
4651         SHFLAGS='-shared'
4652         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4653         SLIB_INSTALL_LINKS=
4654         oss_indev_extralibs="-lossaudio"
4655         oss_outdev_extralibs="-lossaudio"
4656         ;;
4657     dragonfly)
4658         disable symver
4659         ;;
4660     freebsd)
4661         ;;
4662     bsd/os)
4663         add_extralibs -lpoll -lgnugetopt
4664         strip="strip -d"
4665         ;;
4666     darwin)
4667         enabled ppc && add_asflags -force_cpusubtype_ALL
4668         install_name_dir_default='$(SHLIBDIR)'
4669         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4670         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4671         strip="${strip} -x"
4672         add_ldflags -Wl,-dynamic,-search_paths_first
4673         SLIBSUF=".dylib"
4674         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4675         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4676         objformat="macho"
4677         enabled x86_64 && objformat="macho64"
4678         enabled_any pic shared x86_64 ||
4679             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4680         check_header dispatch/dispatch.h &&
4681             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4682         ;;
4683     msys*)
4684         die "Native MSYS builds are discouraged, please use the MINGW environment."
4685         ;;
4686     mingw32*|mingw64*)
4687         if test $target_os = "mingw32ce"; then
4688             disable network
4689         else
4690             target_os=mingw32
4691         fi
4692         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4693         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4694         LIBTARGET=i386
4695         if enabled x86_64; then
4696             LIBTARGET="i386:x86-64"
4697         elif enabled arm; then
4698             LIBTARGET=arm-wince
4699         fi
4700         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4701         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4702         shlibdir_default="$bindir_default"
4703         SLIBPREF=""
4704         SLIBSUF=".dll"
4705         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4706         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4707         dlltool="${cross_prefix}dlltool"
4708         if check_cmd lib.exe -list; then
4709             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4710             if enabled x86_64; then
4711                 LIBTARGET=x64
4712             fi
4713         elif check_cmd $dlltool --version; then
4714             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4715         fi
4716         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4717         SLIB_INSTALL_LINKS=
4718         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4719         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4720         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4721         objformat="win32"
4722         ranlib=:
4723         enable dos_paths
4724         check_ldflags -Wl,--nxcompat,--dynamicbase
4725         # Lets work around some stupidity in binutils.
4726         # ld will strip relocations from executables even though we need them
4727         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4728         # however ld then forgets what the entry point should be (oops) so we
4729         # have to manually (re)set it.
4730         if enabled x86_32; then
4731             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4732         elif enabled x86_64; then
4733             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4734             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4735             # Set image base >4GB for extra entropy with HEASLR
4736             add_ldexeflags -Wl,--image-base,0x140000000
4737             append SHFLAGS -Wl,--image-base,0x180000000
4738         fi
4739         ;;
4740     win32|win64)
4741         disable symver
4742         if enabled shared; then
4743             # Link to the import library instead of the normal static library
4744             # for shared libs.
4745             LD_LIB='%.lib'
4746             # Cannot build both shared and static libs with MSVC or icl.
4747             disable static
4748         fi
4749         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4750         shlibdir_default="$bindir_default"
4751         SLIBPREF=""
4752         SLIBSUF=".dll"
4753         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4754         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4755         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4756         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4757         SLIB_INSTALL_LINKS=
4758         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4759         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4760         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4761         objformat="win32"
4762         ranlib=:
4763         enable dos_paths
4764         ;;
4765     cygwin*)
4766         target_os=cygwin
4767         shlibdir_default="$bindir_default"
4768         SLIBPREF="cyg"
4769         SLIBSUF=".dll"
4770         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4771         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4772         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4773         SLIB_INSTALL_LINKS=
4774         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4775         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4776         objformat="win32"
4777         enable dos_paths
4778         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4779         ;;
4780     *-dos|freedos|opendos)
4781         network_extralibs="-lsocket"
4782         objformat="coff"
4783         enable dos_paths
4784         add_cppflags -U__STRICT_ANSI__
4785         ;;
4786     linux)
4787         enable dv1394
4788         enable section_data_rel_ro
4789         ;;
4790     irix*)
4791         target_os=irix
4792         ranlib="echo ignoring ranlib"
4793         ;;
4794     os/2*)
4795         strip="lxlite -CS"
4796         objformat="aout"
4797         add_cppflags -D_GNU_SOURCE
4798         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4799         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4800         LIBSUF="_s.a"
4801         SLIBPREF=""
4802         SLIBSUF=".dll"
4803         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4804         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4805         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4806             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4807             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4808             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4809             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4810         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4811             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4812         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4813         SLIB_INSTALL_LINKS=
4814         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4815         enable dos_paths
4816         enable_weak os2threads
4817         ;;
4818     gnu/kfreebsd)
4819         add_cppflags -D_BSD_SOURCE
4820         ;;
4821     gnu)
4822         ;;
4823     qnx)
4824         add_cppflags -D_QNX_SOURCE
4825         network_extralibs="-lsocket"
4826         ;;
4827     symbian)
4828         SLIBSUF=".dll"
4829         enable dos_paths
4830         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4831         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4832         add_ldflags -Wl,--target1-abs,--no-undefined \
4833                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4834                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4835         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4836                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4837                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4838         ;;
4839     osf1)
4840         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4841         ;;
4842     minix)
4843         ;;
4844     plan9)
4845         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4846                      -D_REENTRANT_SOURCE        \
4847                      -D_RESEARCH_SOURCE         \
4848                      -DFD_SETSIZE=96            \
4849                      -DHAVE_SOCK_OPTS
4850         add_compat strtod.o strtod=avpriv_strtod
4851         network_extralibs='-lbsd'
4852         exeobjs=compat/plan9/main.o
4853         disable ffserver
4854         cp_f='cp'
4855         ;;
4856     none)
4857         ;;
4858     *)
4859         die "Unknown OS '$target_os'."
4860         ;;
4861 esac
4862
4863 # test if creating links works
4864 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4865 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4866 mkdir "$link_dest"
4867 $ln_s "$link_dest" "$link_name"
4868 touch "$link_dest/test_file"
4869 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4870     # create link to source path
4871     [ -e src ] && rm src
4872     $ln_s "$source_path" src
4873     source_link=src
4874 else
4875     # creating directory links doesn't work
4876     # fall back to using the full source path
4877     source_link="$source_path"
4878 fi
4879 # cleanup
4880 rm -r "$link_dest"
4881 rm -r "$link_name"
4882
4883 # determine libc flavour
4884
4885 probe_libc(){
4886     pfx=$1
4887     pfx_no_=${pfx%_}
4888     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4889     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4890         eval ${pfx}libc_type=uclibc
4891         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4892     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4893         eval ${pfx}libc_type=glibc
4894         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4895     # MinGW headers can be installed on Cygwin, so check for newlib first.
4896     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4897         eval ${pfx}libc_type=newlib
4898         add_${pfx}cppflags -U__STRICT_ANSI__
4899     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4900     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4901         eval ${pfx}libc_type=mingw64
4902         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4903             add_compat msvcrt/snprintf.o
4904             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4905         fi
4906         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4907         eval test \$${pfx_no_}cc_type = "gcc" &&
4908             add_${pfx}cppflags -D__printf__=__gnu_printf__
4909     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4910          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4911         eval ${pfx}libc_type=mingw32
4912         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4913             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4914             die "ERROR: MinGW32 runtime version must be >= 3.15."
4915         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4916         eval test \$${pfx_no_}cc_type = "gcc" &&
4917             add_${pfx}cppflags -D__printf__=__gnu_printf__
4918     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4919         eval ${pfx}libc_type=msvcrt
4920         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4921             if [ "$pfx" = host_ ]; then
4922                 add_host_cppflags -Dsnprintf=_snprintf
4923             else
4924                 add_compat strtod.o strtod=avpriv_strtod
4925                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4926                                              _snprintf=avpriv_snprintf  \
4927                                              vsnprintf=avpriv_vsnprintf
4928             fi
4929         fi
4930         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4931         # 0x601 by default unless something else is set by the user.
4932         # This can easily lead to us detecting functions only present
4933         # in such new versions and producing binaries requiring windows 7.0.
4934         # Therefore explicitly set the default to XP unless the user has
4935         # set something else on the command line.
4936         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4937         # family. For these cases, configure is free to use any functions
4938         # found in the SDK headers by default. (Alternatively, we could force
4939         # _WIN32_WINNT to 0x0602 in that case.)
4940         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4941             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4942 #ifdef WINAPI_FAMILY
4943 #include <winapifamily.h>
4944 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4945 #error not desktop
4946 #endif
4947 #endif
4948 EOF
4949     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4950         eval ${pfx}libc_type=klibc
4951     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4952         eval ${pfx}libc_type=bionic
4953     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4954         eval ${pfx}libc_type=solaris
4955         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4956     fi
4957     check_${pfx}cc <<EOF
4958 #include <time.h>
4959 void *v = localtime_r;
4960 EOF
4961 test "$?" != 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
4962 #include <time.h>
4963 void *v = localtime_r;
4964 EOF
4965
4966 }
4967
4968 probe_libc
4969 test -n "$libc_type" && enable libc_$libc_type
4970 probe_libc host_
4971 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4972
4973 case $libc_type in
4974     bionic)
4975         add_compat strtod.o strtod=avpriv_strtod
4976         ;;
4977 esac
4978
4979 # hacks for compiler/libc/os combinations
4980
4981 if enabled_all tms470 libc_glibc; then
4982     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4983     add_cppflags -D__USER_LABEL_PREFIX__=
4984     add_cppflags -D__builtin_memset=memset
4985     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4986     add_cflags   -pds=48    # incompatible redefinition of macro
4987 fi
4988
4989 if enabled_all ccc libc_glibc; then
4990     add_ldflags -Wl,-z,now  # calls to libots crash without this
4991 fi
4992
4993 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4994     add_cppflags '-I\$(SRC_PATH)/compat/float'
4995
4996 esc(){
4997     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4998 }
4999
5000 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5001
5002 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5003
5004 set_default libdir
5005 : ${shlibdir_default:="$libdir"}
5006 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5007
5008 set_default $PATHS_LIST
5009 set_default nm
5010
5011 # we need to build at least one lib type
5012 if ! enabled_any static shared; then
5013     cat <<EOF
5014 At least one library type must be built.
5015 Specify --enable-static to build the static libraries or --enable-shared to
5016 build the shared libraries as well. To only build the shared libraries specify
5017 --disable-static in addition to --enable-shared.
5018 EOF
5019     exit 1
5020 fi
5021
5022 die_license_disabled() {
5023     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5024 }
5025
5026 die_license_disabled_gpl() {
5027     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5028 }
5029
5030 die_license_disabled gpl frei0r
5031 die_license_disabled gpl libcdio
5032 die_license_disabled gpl librubberband
5033 die_license_disabled gpl libsmbclient
5034 die_license_disabled gpl libvidstab
5035 die_license_disabled gpl libx264
5036 die_license_disabled gpl libx265
5037 die_license_disabled gpl libxavs
5038 die_license_disabled gpl libxvid
5039 die_license_disabled gpl x11grab
5040
5041 die_license_disabled nonfree cuda
5042 die_license_disabled nonfree cuvid
5043 die_license_disabled nonfree libfaac
5044 die_license_disabled nonfree libnpp
5045 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5046 enabled gpl && die_license_disabled_gpl nonfree openssl
5047
5048 die_license_disabled version3 gmp
5049 die_license_disabled version3 libopencore_amrnb
5050 die_license_disabled version3 libopencore_amrwb
5051 die_license_disabled version3 libsmbclient
5052 die_license_disabled version3 libvo_amrwbenc
5053
5054 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5055
5056 disabled optimizations || check_cflags -fomit-frame-pointer
5057
5058 enable_weak_pic() {
5059     disabled pic && return
5060     enable pic
5061     add_cppflags -DPIC
5062     case "$target_os" in
5063     mingw*|cygwin*)
5064         ;;
5065     *)
5066         add_cflags -fPIC
5067         ;;
5068     esac
5069     add_asflags  -fPIC
5070 }
5071
5072 enabled pic && enable_weak_pic
5073
5074 check_cc <<EOF || die "Symbol mangling check failed."
5075 int ff_extern;
5076 EOF
5077 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5078 extern_prefix=${sym%%ff_extern*}
5079
5080 check_cc <<EOF && enable_weak inline_asm
5081 void foo(void) { __asm__ volatile ("" ::); }
5082 EOF
5083
5084 _restrict=
5085 for restrict_keyword in restrict __restrict__ __restrict; do
5086     check_cc <<EOF && _restrict=$restrict_keyword && break
5087 void foo(char * $restrict_keyword p);
5088 EOF
5089 done
5090
5091 check_cc <<EOF && enable pragma_deprecated
5092 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5093 EOF
5094
5095 check_cc <<EOF && enable attribute_packed
5096 struct { int x; } __attribute__((packed)) x;
5097 EOF
5098
5099 check_cc <<EOF && enable attribute_may_alias
5100 union { int x; } __attribute__((may_alias)) x;
5101 EOF
5102
5103 check_cc <<EOF || die "endian test failed"
5104 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5105 EOF
5106 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5107
5108 if ! enabled ppc64 || enabled bigendian; then
5109     disable vsx
5110 fi
5111
5112 check_gas() {
5113     log "check_gas using '$as' as AS"
5114     # :vararg is used on aarch64, arm and ppc altivec
5115     check_as <<EOF || return 1
5116 .macro m n, y:vararg=0
5117 \n: .int \y
5118 .endm
5119 m x
5120 EOF
5121     # .altmacro is only used in arm asm
5122     ! enabled arm || check_as <<EOF || return 1
5123 .altmacro
5124 EOF
5125     enable gnu_as
5126     return 0
5127 }
5128
5129 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5130     nogas=:
5131     enabled_any arm aarch64 && nogas=die
5132     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5133     as_noop=-v
5134
5135     case $as_type in
5136         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5137         gcc)  gaspp_as_type=gas ;;
5138         *)    gaspp_as_type=$as_type ;;
5139     esac
5140
5141     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5142
5143     test "${as#*gas-preprocessor.pl}" != "$as" ||
5144     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5145         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5146
5147     if ! check_gas ; then
5148         as=${gas:=$as}
5149         check_gas || \
5150             $nogas "GNU assembler not found, install/update gas-preprocessor"
5151     fi
5152
5153     check_as <<EOF && enable as_func
5154 .func test
5155 .endfunc
5156 EOF
5157 fi
5158
5159 check_inline_asm inline_asm_labels '"1:\n"'
5160
5161 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5162
5163 if enabled aarch64; then
5164     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5165     # internal assembler in clang 3.3 does not support this instruction
5166     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5167     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5168
5169     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5170
5171 elif enabled alpha; then
5172
5173     check_cflags -mieee
5174
5175 elif enabled arm; then
5176
5177     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5178
5179     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5180 float func(float a, float b){ return a+b; }
5181 EOF
5182
5183     enabled thumb && check_cflags -mthumb || check_cflags -marm
5184
5185     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5186         enable vfp_args
5187     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5188         enable vfp_args
5189     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5190         case "${cross_prefix:-$cc}" in
5191             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5192             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5193 __asm__ (".eabi_attribute 28, 1");
5194 int main(void) { return 0; }
5195 EOF
5196         esac
5197         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5198     fi
5199
5200     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5201     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5202     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5203     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5204     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5205     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5206     enabled setend  && check_insn setend  'setend be'
5207
5208     [ $target_os = linux ] || [ $target_os = android ] ||
5209         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5210             $ARCH_EXT_LIST_ARM
5211
5212     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5213
5214     check_as <<EOF && enable as_dn_directive
5215 ra .dn d0.i16
5216 .unreq ra
5217 EOF
5218
5219     # llvm's integrated assembler supports .object_arch from llvm 3.5
5220     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5221 .object_arch armv4
5222 EOF
5223
5224     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5225
5226 elif enabled mips; then
5227
5228     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5229     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5230     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5231
5232     # Enable minimum ISA based on selected options
5233     if enabled mips64; then
5234         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5235         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5236         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5237     else
5238         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5239         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5240         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5241         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5242     fi
5243
5244     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5245     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5246     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5247     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5248     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5249
5250 elif enabled parisc; then
5251
5252     if enabled gcc; then
5253         case $($cc -dumpversion) in
5254             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5255         esac
5256     fi
5257
5258 elif enabled ppc; then
5259
5260     enable local_aligned_8 local_aligned_16 local_aligned_32
5261
5262     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5263     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5264     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5265     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5266
5267     # AltiVec flags: The FSF version of GCC differs from the Apple version
5268     if enabled altivec; then
5269         check_cflags -maltivec -mabi=altivec &&
5270         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5271         check_cflags -faltivec
5272
5273         # check if our compiler supports Motorola AltiVec C API
5274         check_cc <<EOF || disable altivec
5275 $inc_altivec_h
5276 int main(void) {
5277     vector signed int v1 = (vector signed int) { 0 };
5278     vector signed int v2 = (vector signed int) { 1 };
5279     v1 = vec_add(v1, v2);
5280     return 0;
5281 }
5282 EOF
5283
5284         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5285     fi
5286
5287     if enabled vsx; then
5288         check_cflags -mvsx &&
5289         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5290     fi
5291
5292     if enabled power8; then
5293         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5294     fi
5295
5296 elif enabled x86; then
5297
5298     check_builtin rdtsc    intrin.h   "__rdtsc()"
5299     check_builtin mm_empty mmintrin.h "_mm_empty()"
5300
5301     enable local_aligned_8 local_aligned_16 local_aligned_32
5302
5303     # check whether EBP is available on x86
5304     # As 'i' is stored on the stack, this program will crash
5305     # if the base pointer is used to access it because the
5306     # base pointer is cleared in the inline assembly code.
5307     check_exec_crash <<EOF && enable ebp_available
5308 volatile int i=0;
5309 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5310 return i;
5311 EOF
5312
5313     # check whether EBX is available on x86
5314     check_inline_asm ebx_available '""::"b"(0)' &&
5315         check_inline_asm ebx_available '"":::"%ebx"'
5316
5317     # check whether xmm clobbers are supported
5318     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5319
5320     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5321         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5322
5323     # check whether binutils is new enough to compile SSSE3/MMXEXT
5324     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5325     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5326
5327     if ! disabled_any asm mmx yasm; then
5328         if check_cmd $yasmexe --version; then
5329             enabled x86_64 && yasm_extra="-m amd64"
5330             yasm_debug="-g dwarf2"
5331         elif check_cmd nasm -v; then
5332             yasmexe=nasm
5333             yasm_debug="-g -F dwarf"
5334             if enabled x86_64; then
5335                 case "$objformat" in
5336                     elf)   objformat=elf64 ;;
5337                     win32) objformat=win64 ;;
5338                 esac
5339             fi
5340         fi
5341
5342         YASMFLAGS="-f $objformat $yasm_extra"
5343         enabled pic               && append YASMFLAGS "-DPIC"
5344         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5345         case "$objformat" in
5346             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5347         esac
5348
5349         check_yasm "movbe ecx, [5]" && enable yasm ||
5350             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5351         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5352         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5353         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5354         check_yasm "CPU amdnop" || disable cpunop
5355     fi
5356
5357     case "$cpu" in
5358         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5359             disable fast_clz
5360         ;;
5361     esac
5362
5363 fi
5364
5365 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5366
5367 check_ldflags -Wl,--as-needed
5368 check_ldflags -Wl,-z,noexecstack
5369
5370 if check_func dlopen; then
5371     ldl=
5372 elif check_func dlopen -ldl; then
5373     ldl=-ldl
5374 fi
5375
5376 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5377 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5378 frei0r_filter_extralibs='$ldl'
5379 frei0r_src_filter_extralibs='$ldl'
5380 ladspa_filter_extralibs='$ldl'
5381 nvenc_encoder_extralibs='$ldl'
5382 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5383 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5384
5385 if ! disabled network; then
5386     check_func getaddrinfo $network_extralibs
5387     check_func inet_aton $network_extralibs
5388
5389     check_type netdb.h "struct addrinfo"
5390     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5391     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5392     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5393     check_type poll.h "struct pollfd"
5394     check_type netinet/sctp.h "struct sctp_event_subscribe"
5395     check_struct "sys/socket.h" "struct msghdr" msg_flags
5396     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5397     check_type netinet/in.h "struct sockaddr_in6"
5398     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5399     check_type "sys/types.h sys/socket.h" socklen_t
5400
5401     # Prefer arpa/inet.h over winsock2
5402     if check_header arpa/inet.h ; then
5403         check_func closesocket
5404     elif check_header winsock2.h ; then
5405         check_func_headers winsock2.h closesocket -lws2 &&
5406             network_extralibs="-lws2" ||
5407         { check_func_headers winsock2.h closesocket -lws2_32 &&
5408             network_extralibs="-lws2_32"; } || disable winsock2_h network
5409         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5410
5411         check_type ws2tcpip.h socklen_t
5412         check_type ws2tcpip.h "struct addrinfo"
5413         check_type ws2tcpip.h "struct group_source_req"
5414         check_type ws2tcpip.h "struct ip_mreq_source"
5415         check_type ws2tcpip.h "struct ipv6_mreq"
5416         check_type winsock2.h "struct pollfd"
5417         check_struct winsock2.h "struct sockaddr" sa_len
5418         check_type ws2tcpip.h "struct sockaddr_in6"
5419         check_type ws2tcpip.h "struct sockaddr_storage"
5420     else
5421         disable network
5422     fi
5423 fi
5424
5425 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5426 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5427 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5428 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5429 check_builtin sarestart signal.h "SA_RESTART"
5430 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5431 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5432 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5433 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5434 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5435
5436 case "$custom_allocator" in
5437     jemalloc)
5438         # jemalloc by default does not use a prefix
5439         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5440     ;;
5441     tcmalloc)
5442         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5443         malloc_prefix=tc_
5444     ;;
5445 esac
5446
5447 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5448 check_func  ${malloc_prefix}memalign            && enable memalign
5449 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5450
5451 check_func  access
5452 check_func  arc4random
5453 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5454 check_func  fcntl
5455 check_func  fork
5456 check_func  gethrtime
5457 check_func  getopt
5458 check_func  getrusage
5459 check_func  gettimeofday
5460 check_func  isatty
5461 check_func  mach_absolute_time
5462 check_func  mkstemp
5463 check_func  mmap
5464 check_func  mprotect
5465 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5466 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5467 check_func  sched_getaffinity
5468 check_func  setrlimit
5469 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5470 check_func  strerror_r
5471 check_func  sysconf
5472 check_func  sysctl
5473 check_func  usleep
5474
5475 check_func_headers conio.h kbhit
5476 check_func_headers io.h setmode
5477 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5478 check_func_headers stdlib.h getenv
5479 check_func_headers sys/stat.h lstat
5480
5481 check_func_headers windows.h CoTaskMemFree -lole32
5482 check_func_headers windows.h GetProcessAffinityMask
5483 check_func_headers windows.h GetProcessTimes
5484 check_func_headers windows.h GetSystemTimeAsFileTime
5485 check_func_headers windows.h MapViewOfFile
5486 check_func_headers windows.h PeekNamedPipe
5487 check_func_headers windows.h SetConsoleTextAttribute
5488 check_func_headers windows.h SetConsoleCtrlHandler
5489 check_func_headers windows.h Sleep
5490 check_func_headers windows.h VirtualAlloc
5491 check_struct windows.h "CONDITION_VARIABLE" Ptr
5492 check_func_headers glob.h glob
5493 enabled xlib &&
5494     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5495
5496 check_header AudioToolbox/AudioToolbox.h
5497 check_header direct.h
5498 check_header dirent.h
5499 check_header dlfcn.h
5500 check_header d3d11.h
5501 check_header dxva.h
5502 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5503 check_header io.h
5504 check_header libcrystalhd/libcrystalhd_if.h
5505 check_header mach/mach_time.h
5506 check_header malloc.h
5507 check_header net/udplite.h
5508 check_header poll.h
5509 check_header sys/mman.h
5510 check_header sys/param.h
5511 check_header sys/resource.h
5512 check_header sys/select.h
5513 check_header sys/time.h
5514 check_header sys/un.h
5515 check_header termios.h
5516 check_header unistd.h
5517 check_header valgrind/valgrind.h
5518 check_header vdpau/vdpau.h
5519 check_header vdpau/vdpau_x11.h
5520 check_header VideoDecodeAcceleration/VDADecoder.h
5521 check_header VideoToolbox/VideoToolbox.h
5522 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5523 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5524 check_header windows.h
5525 check_header X11/extensions/XvMClib.h
5526 check_header asm/types.h
5527
5528 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5529 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5530 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5531 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5532
5533 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5534
5535 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5536 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5537 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5538 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5539 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5540
5541 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5542 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5543 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5544 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5545 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5546 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5547
5548 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5549
5550 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
5551 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
5552 check_type "cuviddec.h" "CUVIDVC1PICPARAMS"
5553 check_type "cuviddec.h" "CUVIDVP9PICPARAMS"
5554
5555 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5556
5557 if ! disabled w32threads && ! enabled pthreads; then
5558     check_func_headers "windows.h process.h" _beginthreadex &&
5559         enable w32threads || disable w32threads
5560     if ! enabled w32threads && enabled winrt; then
5561         check_func_headers "windows.h" CreateThread &&
5562             enable w32threads || disable w32threads
5563     fi
5564 fi
5565
5566 # check for some common methods of building with pthread support
5567 # do this before the optional library checks as some of them require pthreads
5568 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5569     enable pthreads
5570     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5571         add_cflags -pthread
5572         add_extralibs -pthread
5573     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5574         add_cflags -pthreads
5575         add_extralibs -pthreads
5576     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5577         add_cflags -ldl -pthread
5578         add_extralibs -ldl -pthread
5579     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5580         add_extralibs -lpthreadGC2
5581     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5582         :
5583     elif ! check_func pthread_join && ! check_func pthread_create; then
5584         disable pthreads
5585     fi
5586     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5587 fi
5588
5589
5590 if enabled pthreads; then
5591   check_func pthread_cancel
5592 fi
5593
5594 enabled pthreads &&
5595     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5596
5597 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5598 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5599 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5600
5601 check_lib math.h sin -lm && LIBM="-lm"
5602 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5603
5604 atan2f_args=2
5605 copysign_args=2
5606 hypot_args=2
5607 ldexpf_args=2
5608 powf_args=2
5609
5610 for func in $MATH_FUNCS; do
5611     eval check_mathfunc $func \${${func}_args:-1}
5612 done
5613
5614 for func in $COMPLEX_FUNCS; do
5615     eval check_complexfunc $func \${${func}_args:-1}
5616 done
5617
5618 # Enable CUVID by default if CUDA is enabled
5619 if enabled cuda && ! disabled cuvid; then
5620     enable cuvid
5621 fi
5622
5623 # these are off by default, so fail if requested and not available
5624 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5625 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5626                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5627 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5628                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5629                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5630 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
5631                                die "ERROR: CUDA not found"; }
5632 enabled cuvid             && { check_lib cuviddec.h cuvidCreateDecoder -lnvcuvid ||
5633                                die "ERROR: CUVID not found"; } &&
5634                              { enabled cuda ||
5635                                die "ERROR: CUVID requires CUDA"; }
5636 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5637 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5638 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5639 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5640                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5641 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5642 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5643 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5644 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5645                                check_lib2 "dlfcn.h" dlopen -ldl; }
5646 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5647 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5648 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5649 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5650 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5651 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5652                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5653                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5654 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5655 enabled libebur128        && require ebur128 ebur128.h ebur128_relative_threshold -lebur128
5656 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5657 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5658                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5659                                  warn "using libfdk without pkg-config"; } }
5660 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"
5661 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5662 enabled fontconfig        && enable libfontconfig
5663 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5664 enabled libfreetype       && require_libfreetype
5665 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5666 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5667 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5668                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5669                                done || die "ERROR: libgsm not found"; }
5670 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5671 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5672 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5673 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5674 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5675 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5676 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5677 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5678 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5679 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5680                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5681                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5682                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5683 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5684 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5685                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5686                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5687                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5688                                die "ERROR: libopenjpeg not found"; }
5689 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5690 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5691 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5692 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5693 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5694 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5695 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5696 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5697                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5698 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5699 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5700 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5701 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5702 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5703 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5704 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5705                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5706                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5707 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5708 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5709 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5710 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5711
5712 enabled libvpx            && {
5713     enabled libvpx_vp8_decoder && {
5714         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5715             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5716                 die "ERROR: libvpx decoder version must be >=0.9.1";
5717     }
5718     enabled libvpx_vp8_encoder && {
5719         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5720             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5721                 die "ERROR: libvpx encoder version must be >=0.9.7";
5722     }
5723     enabled libvpx_vp9_decoder && {
5724         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5725             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5726                 disable libvpx_vp9_decoder;
5727     }
5728     enabled libvpx_vp9_encoder && {
5729         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5730             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5731                 disable libvpx_vp9_encoder;
5732     }
5733     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5734         die "libvpx enabled but no supported decoders found"
5735     fi
5736 }
5737
5738 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5739 enabled libwebp           && {
5740     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5741     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5742 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5743                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5744                                  warn "using libx264 without pkg-config"; } } &&
5745                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5746                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5747                              { check_cpp_condition x264.h "X264_MPEG2" &&
5748                                enable libx262; }
5749 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5750                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5751                                die "ERROR: libx265 version must be >= 68."; }
5752 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5753 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5754 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5755 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5756 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5757                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5758                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5759 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5760 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5761                                 { ! enabled cross_compile && {
5762                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5763                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5764                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5765                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5766                                die "ERROR: mmal not found"; }
5767 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5768
5769 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5770 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5771                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
5772                                die "ERROR: NVENC API version 5 or older is not supported"; } &&
5773                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5774 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5775                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5776                                die "ERROR: openal not found"; } &&
5777                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5778                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5779 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5780                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5781                                die "ERROR: opencl not found"; } &&
5782                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5783                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5784                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5785 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5786                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5787                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5788                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5789                                die "ERROR: opengl not found."
5790                              }
5791 enabled omx_rpi && enable omx
5792 enabled omx               && { check_header OMX_Core.h ||
5793                                 { ! enabled cross_compile && enabled omx_rpi && {
5794                                     add_cflags -isystem/opt/vc/include/IL ; }
5795                                 check_header OMX_Core.h ; } ||
5796                                die "ERROR: OpenMAX IL headers not found"; }
5797 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5798                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5799                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5800                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5801                                die "ERROR: openssl not found"; }
5802 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5803
5804 # libdc1394 check
5805 if enabled libdc1394; then
5806     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5807         enable libdc1394_2; } ||
5808     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5809         enable libdc1394_1; } ||
5810     die "ERROR: No version of libdc1394 found "
5811 fi
5812
5813 if enabled gcrypt; then
5814     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5815     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5816         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5817         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5818         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5819             die "ERROR: gcrypt not found"
5820         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5821     else
5822         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5823     fi
5824 fi
5825
5826 if ! disabled sdl; then
5827     SDL_CONFIG="${cross_prefix}sdl-config"
5828     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5829         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5830         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5831         enable sdl
5832     else
5833         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5834             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5835             sdl_libs=$("${SDL_CONFIG}" --libs)
5836             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5837             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5838             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5839             enable sdl
5840         elif enabled sdl ; then
5841             die "ERROR: SDL not found"
5842         else
5843             disable sdl
5844         fi
5845     fi
5846     if test $target_os = "mingw32"; then
5847         sdl_libs="$sdl_libs -mconsole"
5848     fi
5849 fi
5850 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5851
5852 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5853     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5854     enable securetransport; }
5855
5856 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5857                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5858
5859 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5860 enabled makeinfo \
5861     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5862     && enable makeinfo_html || disable makeinfo_html
5863 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5864 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5865 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5866 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5867
5868 check_header linux/fb.h
5869 check_header linux/videodev.h
5870 check_header linux/videodev2.h
5871 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5872
5873 check_header sys/videoio.h
5874 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5875
5876 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5877 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5878 # w32api 3.12 had it defined wrong
5879 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5880
5881 check_type "dshow.h" IBaseFilter
5882
5883 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5884 { check_header dev/bktr/ioctl_meteor.h &&
5885   check_header dev/bktr/ioctl_bt848.h; } ||
5886 { check_header machine/ioctl_meteor.h &&
5887   check_header machine/ioctl_bt848.h; } ||
5888 { check_header dev/video/meteor/ioctl_meteor.h &&
5889   check_header dev/video/bktr/ioctl_bt848.h; } ||
5890 check_header dev/ic/bt8xx.h
5891
5892 check_header sndio.h
5893 if check_struct sys/soundcard.h audio_buf_info bytes; then
5894     enable_safe sys/soundcard.h
5895 else
5896     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5897     #include <sys/soundcard.h>
5898     audio_buf_info abc;
5899 EOF
5900 fi
5901 check_header soundcard.h
5902
5903 enabled_any alsa_indev alsa_outdev &&
5904     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5905
5906 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5907     check_func jack_port_get_latency_range -ljack
5908
5909 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5910
5911 if enabled libcdio; then
5912     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5913     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5914     die "ERROR: No usable libcdio/cdparanoia found"
5915 fi
5916
5917 enabled xlib &&
5918     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5919
5920 if ! disabled libxcb; then
5921     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5922         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5923     } && disable x11grab && enable libxcb
5924
5925 if enabled libxcb; then
5926     disabled libxcb_shm || {
5927         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5928             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5929         } && check_header sys/shm.h && enable libxcb_shm; }
5930
5931     disabled libxcb_xfixes || {
5932         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5933             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5934         } && enable libxcb_xfixes; }
5935
5936     disabled libxcb_shape || {
5937         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5938             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5939         } && enable libxcb_shape; }
5940
5941     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5942     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5943 fi
5944 fi
5945
5946 if enabled x11grab; then
5947     enabled xlib || die "ERROR: Xlib not found"
5948     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5949     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5950 fi
5951
5952 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5953
5954 enabled dxva2api_h &&
5955     check_cc <<EOF && enable dxva2api_cobj
5956 #define _WIN32_WINNT 0x0600
5957 #define COBJMACROS
5958 #include <windows.h>
5959 #include <d3d9.h>
5960 #include <dxva2api.h>
5961 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5962 EOF
5963
5964 enabled vaapi &&
5965     check_lib va/va.h vaInitialize -lva ||
5966     disable vaapi
5967
5968 enabled vaapi &&
5969     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
5970     disable vaapi
5971
5972 if enabled vaapi ; then
5973     enabled xlib &&
5974     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5975     enable vaapi_x11
5976
5977     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
5978     enable vaapi_drm
5979 fi
5980
5981 enabled vdpau &&
5982     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5983     disable vdpau
5984
5985 enabled vdpau && enabled xlib &&
5986     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5987     enable vdpau_x11
5988
5989 # Funny iconv installations are not unusual, so check it after all flags have been set
5990 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5991
5992 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5993
5994 # add some useful compiler flags if supported
5995 check_cflags -Wdeclaration-after-statement
5996 check_cflags -Wall
5997 check_cflags -Wdisabled-optimization
5998 check_cflags -Wpointer-arith
5999 check_cflags -Wredundant-decls
6000 check_cflags -Wwrite-strings
6001 check_cflags -Wtype-limits
6002 check_cflags -Wundef
6003 check_cflags -Wmissing-prototypes
6004 check_cflags -Wno-pointer-to-int-cast
6005 check_cflags -Wstrict-prototypes
6006 check_cflags -Wempty-body
6007 enabled extra_warnings && check_cflags -Winline
6008 enabled extra_warnings && check_cflags -Wcast-qual
6009
6010 check_disable_warning(){
6011     warning_flag=-W${1#-Wno-}
6012     test_cflags $warning_flag && add_cflags $1
6013 }
6014
6015 check_disable_warning -Wno-parentheses
6016 check_disable_warning -Wno-switch
6017 check_disable_warning -Wno-format-zero-length
6018 check_disable_warning -Wno-pointer-sign
6019 check_disable_warning -Wno-unused-const-variable
6020
6021 # add some linker flags
6022 check_ldflags -Wl,--warn-common
6023 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6024 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6025 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6026 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6027
6028 # add some strip flags
6029 # -wN '..@*' is more selective than -x, but not available everywhere.
6030 check_stripflags -wN \'..@*\' || check_stripflags -x
6031
6032 enabled neon_clobber_test &&
6033     check_ldflags -Wl,--wrap,avcodec_open2              \
6034                   -Wl,--wrap,avcodec_decode_audio4      \
6035                   -Wl,--wrap,avcodec_decode_video2      \
6036                   -Wl,--wrap,avcodec_decode_subtitle2   \
6037                   -Wl,--wrap,avcodec_encode_audio2      \
6038                   -Wl,--wrap,avcodec_encode_video2      \
6039                   -Wl,--wrap,avcodec_send_packet        \
6040                   -Wl,--wrap,avcodec_receive_frame      \
6041                   -Wl,--wrap,avcodec_encode_subtitle    \
6042                   -Wl,--wrap,swr_convert                \
6043                   -Wl,--wrap,avresample_convert ||
6044     disable neon_clobber_test
6045
6046 enabled xmm_clobber_test &&
6047     check_ldflags -Wl,--wrap,avcodec_open2              \
6048                   -Wl,--wrap,avcodec_decode_audio4      \
6049                   -Wl,--wrap,avcodec_decode_video2      \
6050                   -Wl,--wrap,avcodec_decode_subtitle2   \
6051                   -Wl,--wrap,avcodec_encode_audio2      \
6052                   -Wl,--wrap,avcodec_encode_video2      \
6053                   -Wl,--wrap,avcodec_encode_subtitle    \
6054                   -Wl,--wrap,avcodec_send_packet        \
6055                   -Wl,--wrap,avcodec_receive_frame      \
6056                   -Wl,--wrap,swr_convert                \
6057                   -Wl,--wrap,avresample_convert         \
6058                   -Wl,--wrap,sws_scale ||
6059     disable xmm_clobber_test
6060
6061 check_ld "cc" <<EOF && enable proper_dce
6062 extern const int array[512];
6063 static inline int func(void) { return array[0]; }
6064 int main(void) { return 0; }
6065 EOF
6066
6067 if enabled proper_dce; then
6068     echo "X { local: *; };" > $TMPV
6069     if test_ldflags -Wl,${version_script},$TMPV; then
6070         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6071         check_cc <<EOF && enable symver_asm_label
6072 void ff_foo(void) __asm__ ("av_foo@VERSION");
6073 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6074 EOF
6075         check_cc <<EOF && enable symver_gnu_asm
6076 __asm__(".symver ff_foo,av_foo@VERSION");
6077 void ff_foo(void) {}
6078 EOF
6079     fi
6080 fi
6081
6082 if [ -z "$optflags" ]; then
6083     if enabled small; then
6084         optflags=$cflags_size
6085     elif enabled optimizations; then
6086         optflags=$cflags_speed
6087     else
6088         optflags=$cflags_noopt
6089     fi
6090 fi
6091
6092 check_optflags(){
6093     check_cflags "$@"
6094     enabled lto && check_ldflags "$@"
6095 }
6096
6097
6098 if enabled lto; then
6099     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6100     check_cflags  -flto
6101     check_ldflags -flto $cpuflags
6102     disable inline_asm_direct_symbol_refs
6103 fi
6104
6105 check_optflags $optflags
6106 check_optflags -fno-math-errno
6107 check_optflags -fno-signed-zeros
6108
6109 enabled ftrapv && check_cflags -ftrapv
6110
6111 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6112 int x;
6113 EOF
6114
6115
6116 if enabled icc; then
6117     # Just warnings, no remarks
6118     check_cflags -w1
6119     # -wd: Disable following warnings
6120     # 144, 167, 556: -Wno-pointer-sign
6121     # 188: enumerated type mixed with another type
6122     # 1292: attribute "foo" ignored
6123     # 1419: external declaration in primary source file
6124     # 10006: ignoring unknown option -fno-signed-zeros
6125     # 10148: ignoring unknown option -Wno-parentheses
6126     # 10156: ignoring option '-W'; no argument required
6127     # 13200: No EMMS instruction before call to function
6128     # 13203: No EMMS instruction before return from function
6129     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6130     # 11030: Warning unknown option --as-needed
6131     # 10156: ignoring option '-export'; no argument required
6132     check_ldflags -wd10156,11030
6133     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6134     enable ebp_available
6135     # The test above does not test linking
6136     enabled lto && disable symver_asm_label
6137     if enabled x86_32; then
6138         icc_version=$($cc -dumpversion)
6139         test ${icc_version%%.*} -ge 11 &&
6140             check_cflags -falign-stack=maintain-16-byte ||
6141             disable aligned_stack
6142     fi
6143 elif enabled ccc; then
6144     # disable some annoying warnings
6145     add_cflags -msg_disable bitnotint
6146     add_cflags -msg_disable mixfuncvoid
6147     add_cflags -msg_disable nonstandcast
6148     add_cflags -msg_disable unsupieee
6149 elif enabled gcc; then
6150     check_optflags -fno-tree-vectorize
6151     check_cflags -Werror=format-security
6152     check_cflags -Werror=implicit-function-declaration
6153     check_cflags -Werror=missing-prototypes
6154     check_cflags -Werror=return-type
6155     check_cflags -Werror=vla
6156     check_cflags -Wformat
6157     check_cflags -fdiagnostics-color=auto
6158     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6159 elif enabled llvm_gcc; then
6160     check_cflags -mllvm -stack-alignment=16
6161 elif enabled clang; then
6162     check_cflags -mllvm -stack-alignment=16
6163     check_cflags -Qunused-arguments
6164     check_cflags -Werror=implicit-function-declaration
6165     check_cflags -Werror=missing-prototypes
6166     check_cflags -Werror=return-type
6167 elif enabled cparser; then
6168     add_cflags -Wno-missing-variable-declarations
6169     add_cflags -Wno-empty-statement
6170 elif enabled armcc; then
6171     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6172     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6173     # 2523: use of inline assembly is deprecated
6174     add_cflags -W${armcc_opt},--diag_suppress=2523
6175     add_cflags -W${armcc_opt},--diag_suppress=1207
6176     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6177     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6178     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6179     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6180 elif enabled tms470; then
6181     add_cflags -pds=824 -pds=837
6182     disable inline_asm
6183 elif enabled pathscale; then
6184     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6185 elif enabled_any msvc icl; then
6186     enabled x86_32 && disable aligned_stack
6187     enabled_all x86_32 debug && add_cflags -Oy-
6188     enabled debug && add_ldflags -debug
6189     enable pragma_deprecated
6190     if enabled icl; then
6191         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6192         # (correctly) on icl 13.x.
6193         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6194             add_cflags -Qansi-alias
6195         # Some inline asm is not compilable in debug
6196         if enabled debug; then
6197             disable ebp_available
6198             disable ebx_available
6199         fi
6200     fi
6201     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6202     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6203     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6204     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6205     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6206     # MSVC 2013 and newer can handle it fine.
6207     # If this declspec fails, force including stdlib.h before the restrict redefinition
6208     # happens in config.h.
6209     if [ $_restrict != restrict ]; then
6210         check_cc <<EOF || add_cflags -FIstdlib.h
6211 __declspec($_restrict) void* foo(int);
6212 EOF
6213     fi
6214     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6215     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6216     # this flag should be re-checked on newer compiler releases and put under a
6217     # version check once its fixed
6218     check_cflags -d2SSAOptimizer-
6219 fi
6220
6221 for pfx in "" host_; do
6222     varname=${pfx%_}cc_type
6223     eval "type=\$$varname"
6224     if [ $type = "msvc" ]; then
6225         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6226 static inline int foo(int a) { return a; }
6227 EOF
6228     fi
6229 done
6230
6231 case $as_type in
6232     clang)
6233         add_asflags -Qunused-arguments
6234     ;;
6235 esac
6236
6237 case $ld_type in
6238     clang)
6239         check_ldflags -Qunused-arguments
6240     ;;
6241 esac
6242
6243 case $target_os in
6244     osf1)
6245         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6246     ;;
6247     plan9)
6248         add_cppflags -Dmain=plan9_main
6249     ;;
6250 esac
6251
6252 enable frame_thread_encoder
6253
6254 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6255
6256 check_deps $CONFIG_LIST       \
6257            $CONFIG_EXTRA      \
6258            $HAVE_LIST         \
6259            $ALL_COMPONENTS    \
6260
6261 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"
6262
6263
6264 if test $target_os = "haiku"; then
6265     disable memalign
6266     disable posix_memalign
6267 fi
6268
6269 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6270     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6271     enable dxva2_lib
6272
6273 ! enabled_any memalign posix_memalign aligned_malloc &&
6274     enabled simd_align_16 && enable memalign_hack
6275
6276 # add_dep lib dep
6277 # -> enable ${lib}_deps_${dep}
6278 # -> add $dep to ${lib}_deps only once
6279 add_dep() {
6280     lib=$1
6281     dep=$2
6282     enabled "${lib}_deps_${dep}" && return 0
6283     enable  "${lib}_deps_${dep}"
6284     prepend "${lib}_deps" $dep
6285 }
6286
6287 # merge deps lib components
6288 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6289 merge_deps() {
6290     lib=$1
6291     shift
6292     for comp in $*; do
6293         enabled $comp || continue
6294         eval "dep=\"\$${comp}_deps\""
6295         for d in $dep; do
6296             add_dep $lib $d
6297         done
6298     done
6299 }
6300
6301 merge_deps libavfilter $FILTER_LIST
6302
6303 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6304
6305 for thread in $THREADS_LIST; do
6306     if enabled $thread; then
6307         test -n "$thread_type" &&
6308             die "ERROR: Only one thread type must be selected." ||
6309             thread_type="$thread"
6310     fi
6311 done
6312
6313 enabled zlib && add_cppflags -DZLIB_CONST
6314
6315 # conditional library dependencies, in linking order
6316 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6317 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6318 enabled aresample_filter    && prepend avfilter_deps "swresample"
6319 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6320 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6321 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6322 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6323 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6324 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6325 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6326 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6327 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6328 enabled pan_filter          && prepend avfilter_deps "swresample"
6329 enabled pp_filter           && prepend avfilter_deps "postproc"
6330 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6331 enabled resample_filter && prepend avfilter_deps "avresample"
6332 enabled sab_filter          && prepend avfilter_deps "swscale"
6333 enabled scale_filter    && prepend avfilter_deps "swscale"
6334 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6335 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6336 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6337 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6338 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6339 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6340 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6341 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6342 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6343
6344 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6345
6346 enabled opus_decoder    && prepend avcodec_deps "swresample"
6347
6348 expand_deps(){
6349     lib_deps=${1}_deps
6350     eval "deps=\$$lib_deps"
6351     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6352     unique $lib_deps
6353 }
6354
6355 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6356 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6357
6358 map 'expand_deps $v' $LIBRARY_LIST
6359
6360 echo "install prefix            $prefix"
6361 echo "source path               $source_path"
6362 echo "C compiler                $cc"
6363 echo "C library                 $libc_type"
6364 if test "$host_cc" != "$cc"; then
6365     echo "host C compiler           $host_cc"
6366     echo "host C library            $host_libc_type"
6367 fi
6368 echo "ARCH                      $arch ($cpu)"
6369 if test "$build_suffix" != ""; then
6370     echo "build suffix              $build_suffix"
6371 fi
6372 if test "$progs_suffix" != ""; then
6373     echo "progs suffix              $progs_suffix"
6374 fi
6375 if test "$extra_version" != ""; then
6376     echo "version string suffix     $extra_version"
6377 fi
6378 echo "big-endian                ${bigendian-no}"
6379 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6380 if enabled x86; then
6381     echo "${yasmexe}                      ${yasm-no}"
6382     echo "MMX enabled               ${mmx-no}"
6383     echo "MMXEXT enabled            ${mmxext-no}"
6384     echo "3DNow! enabled            ${amd3dnow-no}"
6385     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6386     echo "SSE enabled               ${sse-no}"
6387     echo "SSSE3 enabled             ${ssse3-no}"
6388     echo "AESNI enabled             ${aesni-no}"
6389     echo "AVX enabled               ${avx-no}"
6390     echo "XOP enabled               ${xop-no}"
6391     echo "FMA3 enabled              ${fma3-no}"
6392     echo "FMA4 enabled              ${fma4-no}"
6393     echo "i686 features enabled     ${i686-no}"
6394     echo "CMOV is fast              ${fast_cmov-no}"
6395     echo "EBX available             ${ebx_available-no}"
6396     echo "EBP available             ${ebp_available-no}"
6397 fi
6398 if enabled aarch64; then
6399     echo "NEON enabled              ${neon-no}"
6400     echo "VFP enabled               ${vfp-no}"
6401 fi
6402 if enabled arm; then
6403     echo "ARMv5TE enabled           ${armv5te-no}"
6404     echo "ARMv6 enabled             ${armv6-no}"
6405     echo "ARMv6T2 enabled           ${armv6t2-no}"
6406     echo "VFP enabled               ${vfp-no}"
6407     echo "NEON enabled              ${neon-no}"
6408     echo "THUMB enabled             ${thumb-no}"
6409 fi
6410 if enabled mips; then
6411     echo "MIPS FPU enabled          ${mipsfpu-no}"
6412     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6413     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6414     echo "MIPS MSA enabled          ${msa-no}"
6415     echo "LOONGSON MMI enabled      ${mmi-no}"
6416 fi
6417 if enabled ppc; then
6418     echo "AltiVec enabled           ${altivec-no}"
6419     echo "VSX enabled               ${vsx-no}"
6420     echo "POWER8 enabled            ${power8-no}"
6421     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6422     echo "dcbzl available           ${dcbzl-no}"
6423 fi
6424 echo "debug symbols             ${debug-no}"
6425 echo "strip symbols             ${stripping-no}"
6426 echo "optimize for size         ${small-no}"
6427 echo "optimizations             ${optimizations-no}"
6428 echo "static                    ${static-no}"
6429 echo "shared                    ${shared-no}"
6430 echo "postprocessing support    ${postproc-no}"
6431 echo "new filter support        ${avfilter-no}"
6432 echo "network support           ${network-no}"
6433 echo "threading support         ${thread_type-no}"
6434 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6435 echo "SDL support               ${sdl-no}"
6436 echo "opencl enabled            ${opencl-no}"
6437 echo "JNI support               ${jni-no}"
6438 echo "texi2html enabled         ${texi2html-no}"
6439 echo "perl enabled              ${perl-no}"
6440 echo "pod2man enabled           ${pod2man-no}"
6441 echo "makeinfo enabled          ${makeinfo-no}"
6442 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6443 test -n "$random_seed" &&
6444     echo "random seed               ${random_seed}"
6445 echo
6446
6447 echo "Enabled programs:"
6448 print_enabled '' $PROGRAM_LIST | print_in_columns
6449 echo
6450
6451 echo "External libraries:"
6452 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6453 echo
6454
6455 echo "External libraries providing hardware acceleration:"
6456 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6457 echo
6458
6459 echo "Libraries:"
6460 print_enabled '' $LIBRARY_LIST | print_in_columns
6461 echo
6462
6463 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6464     echo "Enabled ${type}s:"
6465     eval list=\$$(toupper $type)_LIST
6466     print_enabled '_*' $list | print_in_columns
6467     echo
6468 done
6469
6470 license="LGPL version 2.1 or later"
6471 if enabled nonfree; then
6472     license="nonfree and unredistributable"
6473 elif enabled gplv3; then
6474     license="GPL version 3 or later"
6475 elif enabled lgplv3; then
6476     license="LGPL version 3 or later"
6477 elif enabled gpl; then
6478     license="GPL version 2 or later"
6479 fi
6480
6481 echo "License: $license"
6482
6483 echo "Creating config.mak, config.h, and doc/config.texi..."
6484
6485 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6486
6487 enabled stripping || strip="echo skipping strip"
6488
6489 config_files="$TMPH config.mak doc/config.texi"
6490
6491 cat > config.mak <<EOF
6492 # Automatically generated by configure - do not modify!
6493 ifndef FFMPEG_CONFIG_MAK
6494 FFMPEG_CONFIG_MAK=1
6495 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6496 prefix=$prefix
6497 LIBDIR=\$(DESTDIR)$libdir
6498 SHLIBDIR=\$(DESTDIR)$shlibdir
6499 INCDIR=\$(DESTDIR)$incdir
6500 BINDIR=\$(DESTDIR)$bindir
6501 DATADIR=\$(DESTDIR)$datadir
6502 DOCDIR=\$(DESTDIR)$docdir
6503 MANDIR=\$(DESTDIR)$mandir
6504 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6505 INSTALL_NAME_DIR=$install_name_dir
6506 SRC_PATH=$source_path
6507 SRC_LINK=$source_link
6508 ifndef MAIN_MAKEFILE
6509 SRC_PATH:=\$(SRC_PATH:.%=..%)
6510 endif
6511 CC_IDENT=$cc_ident
6512 ARCH=$arch
6513 INTRINSICS=$intrinsics
6514 CC=$cc
6515 CXX=$cxx
6516 AS=$as
6517 OBJCC=$objcc
6518 LD=$ld
6519 DEPCC=$dep_cc
6520 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6521 DEPAS=$as
6522 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6523 YASM=$yasmexe
6524 DEPYASM=$yasmexe
6525 AR=$ar
6526 ARFLAGS=$arflags
6527 AR_O=$ar_o
6528 RANLIB=$ranlib
6529 STRIP=$strip
6530 CP=cp -p
6531 LN_S=$ln_s
6532 CPPFLAGS=$CPPFLAGS
6533 CFLAGS=$CFLAGS
6534 CXXFLAGS=$CXXFLAGS
6535 OBJCFLAGS=$OBJCFLAGS
6536 ASFLAGS=$ASFLAGS
6537 AS_C=$AS_C
6538 AS_O=$AS_O
6539 OBJCC_C=$OBJCC_C
6540 OBJCC_E=$OBJCC_E
6541 OBJCC_O=$OBJCC_O
6542 CC_C=$CC_C
6543 CC_E=$CC_E
6544 CC_O=$CC_O
6545 CXX_C=$CXX_C
6546 CXX_O=$CXX_O
6547 LD_O=$LD_O
6548 LD_LIB=$LD_LIB
6549 LD_PATH=$LD_PATH
6550 DLLTOOL=$dlltool
6551 WINDRES=$windres
6552 DEPWINDRES=$dep_cc
6553 DOXYGEN=$doxygen
6554 LDFLAGS=$LDFLAGS
6555 LDEXEFLAGS=$LDEXEFLAGS
6556 LDLIBFLAGS=$LDLIBFLAGS
6557 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6558 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6559 YASMFLAGS=$YASMFLAGS
6560 BUILDSUF=$build_suffix
6561 PROGSSUF=$progs_suffix
6562 FULLNAME=$FULLNAME
6563 LIBPREF=$LIBPREF
6564 LIBSUF=$LIBSUF
6565 LIBNAME=$LIBNAME
6566 SLIBPREF=$SLIBPREF
6567 SLIBSUF=$SLIBSUF
6568 EXESUF=$EXESUF
6569 EXTRA_VERSION=$extra_version
6570 CCDEP=$CCDEP
6571 CXXDEP=$CXXDEP
6572 CCDEP_FLAGS=$CCDEP_FLAGS
6573 ASDEP=$ASDEP
6574 ASDEP_FLAGS=$ASDEP_FLAGS
6575 CC_DEPFLAGS=$CC_DEPFLAGS
6576 AS_DEPFLAGS=$AS_DEPFLAGS
6577 HOSTCC=$host_cc
6578 HOSTLD=$host_ld
6579 HOSTCFLAGS=$host_cflags
6580 HOSTCPPFLAGS=$host_cppflags
6581 HOSTEXESUF=$HOSTEXESUF
6582 HOSTLDFLAGS=$host_ldflags
6583 HOSTLIBS=$host_libs
6584 DEPHOSTCC=$host_cc
6585 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6586 HOSTCCDEP=$HOSTCCDEP
6587 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6588 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6589 HOSTCC_C=$HOSTCC_C
6590 HOSTCC_O=$HOSTCC_O
6591 HOSTLD_O=$HOSTLD_O
6592 TARGET_EXEC=$target_exec $target_exec_args
6593 TARGET_PATH=$target_path
6594 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6595 CFLAGS-ffplay=$sdl_cflags
6596 ZLIB=$($ldflags_filter -lz)
6597 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6598 EXTRALIBS=$extralibs
6599 COMPAT_OBJS=$compat_objs
6600 EXEOBJS=$exeobjs
6601 INSTALL=$install
6602 LIBTARGET=${LIBTARGET}
6603 SLIBNAME=${SLIBNAME}
6604 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6605 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6606 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6607 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6608 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6609 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6610 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6611 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6612 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6613 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6614 NOREDZONE_FLAGS=$noredzone_flags
6615 EOF
6616
6617 get_version(){
6618     lcname=lib${1}
6619     name=$(toupper $lcname)
6620     file=$source_path/$lcname/version.h
6621     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6622     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6623     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6624     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6625     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6626     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6627 }
6628
6629 map 'get_version $v' $LIBRARY_LIST
6630
6631 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6632
6633 print_program_libs(){
6634     eval "program_libs=\$${1}_libs"
6635     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6636 }
6637
6638 map 'print_program_libs $v' $PROGRAM_LIST
6639
6640 cat > $TMPH <<EOF
6641 /* Automatically generated by configure - do not modify! */
6642 #ifndef FFMPEG_CONFIG_H
6643 #define FFMPEG_CONFIG_H
6644 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6645 #define FFMPEG_LICENSE "$(c_escape $license)"
6646 #define CONFIG_THIS_YEAR 2016
6647 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6648 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6649 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6650 #define av_restrict $_restrict
6651 #define EXTERN_PREFIX "${extern_prefix}"
6652 #define EXTERN_ASM ${extern_prefix}
6653 #define BUILDSUF "$build_suffix"
6654 #define SLIBSUF "$SLIBSUF"
6655 #define HAVE_MMX2 HAVE_MMXEXT
6656 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6657 EOF
6658
6659 test -n "$assert_level" &&
6660     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6661
6662 test -n "$malloc_prefix" &&
6663     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6664
6665 if enabled yasm; then
6666     append config_files $TMPASM
6667     printf '' >$TMPASM
6668 fi
6669
6670 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6671
6672
6673 mkdir -p doc
6674 mkdir -p tests
6675 mkdir -p tests/api
6676 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6677
6678 print_config ARCH_   "$config_files" $ARCH_LIST
6679 print_config HAVE_   "$config_files" $HAVE_LIST
6680 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6681                                      $CONFIG_EXTRA      \
6682                                      $ALL_COMPONENTS    \
6683
6684 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6685 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6686
6687 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6688 cp_if_changed $TMPH config.h
6689 touch .config
6690
6691 enabled yasm && cp_if_changed $TMPASM config.asm
6692
6693 cat > $TMPH <<EOF
6694 /* Generated by ffconf */
6695 #ifndef AVUTIL_AVCONFIG_H
6696 #define AVUTIL_AVCONFIG_H
6697 EOF
6698
6699 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6700
6701 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6702
6703 cp_if_changed $TMPH libavutil/avconfig.h
6704
6705 if test -n "$WARNINGS"; then
6706     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6707     enabled fatal_warnings && exit 1
6708 fi
6709
6710 # generate the lists of enabled components
6711 print_enabled_components(){
6712     file=$1
6713     struct_name=$2
6714     name=$3
6715     shift 3
6716     echo "static const $struct_name *$name[] = {" > $TMPH
6717     for c in $*; do
6718         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6719     done
6720     echo "    NULL };" >> $TMPH
6721     cp_if_changed $TMPH $file
6722 }
6723
6724 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6725 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6726
6727 # build pkg-config files
6728
6729 lib_version(){
6730     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6731 }
6732
6733 pkgconfig_generate(){
6734     name=$1
6735     shortname=${name#lib}${build_suffix}
6736     comment=$2
6737     version=$3
6738     libs=$4
6739     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6740     requires=${requires%, }
6741     enabled ${name#lib} || return 0
6742     mkdir -p $name
6743     cat <<EOF > $name/$name${build_suffix}.pc
6744 prefix=$prefix
6745 exec_prefix=\${prefix}
6746 libdir=$libdir
6747 includedir=$incdir
6748
6749 Name: $name
6750 Description: $comment
6751 Version: $version
6752 Requires: $(enabled shared || echo $requires)
6753 Requires.private: $(enabled shared && echo $requires)
6754 Conflicts:
6755 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6756 Libs.private: $(enabled shared && echo $libs)
6757 Cflags: -I\${includedir}
6758 EOF
6759
6760 mkdir -p doc/examples/pc-uninstalled
6761 includedir=${source_path}
6762 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6763     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6764 prefix=
6765 exec_prefix=
6766 libdir=\${pcfiledir}/../../../$name
6767 includedir=${includedir}
6768
6769 Name: $name
6770 Description: $comment
6771 Version: $version
6772 Requires: $requires
6773 Conflicts:
6774 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6775 Cflags: -I\${includedir}
6776 EOF
6777 }
6778
6779 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6780 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6781 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6782 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6783 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6784 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6785 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6786 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6787 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"