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