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_decoder_deps="libopenh264"
2775 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2776 libopenh264_encoder_deps="libopenh264"
2777 libopenjpeg_decoder_deps="libopenjpeg"
2778 libopenjpeg_encoder_deps="libopenjpeg"
2779 libopenmpt_demuxer_deps="libopenmpt"
2780 libopus_decoder_deps="libopus"
2781 libopus_encoder_deps="libopus"
2782 libopus_encoder_select="audio_frame_queue"
2783 libschroedinger_decoder_deps="libschroedinger"
2784 libschroedinger_encoder_deps="libschroedinger"
2785 libshine_encoder_deps="libshine"
2786 libshine_encoder_select="audio_frame_queue"
2787 libspeex_decoder_deps="libspeex"
2788 libspeex_encoder_deps="libspeex"
2789 libspeex_encoder_select="audio_frame_queue"
2790 libtheora_encoder_deps="libtheora"
2791 libtwolame_encoder_deps="libtwolame"
2792 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2793 libvorbis_decoder_deps="libvorbis"
2794 libvorbis_encoder_deps="libvorbis"
2795 libvorbis_encoder_select="audio_frame_queue"
2796 libvpx_vp8_decoder_deps="libvpx"
2797 libvpx_vp8_encoder_deps="libvpx"
2798 libvpx_vp9_decoder_deps="libvpx"
2799 libvpx_vp9_encoder_deps="libvpx"
2800 libwavpack_encoder_deps="libwavpack"
2801 libwebp_encoder_deps="libwebp"
2802 libwebp_anim_encoder_deps="libwebp"
2803 libx262_encoder_deps="libx262"
2804 libx264_encoder_deps="libx264"
2805 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2806 libx264rgb_encoder_select="libx264_encoder"
2807 libx265_encoder_deps="libx265"
2808 libxavs_encoder_deps="libxavs"
2809 libxvid_encoder_deps="libxvid"
2810 libzvbi_teletext_decoder_deps="libzvbi"
2811 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2812 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2813 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2814 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2815 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2816
2817 # demuxers / muxers
2818 ac3_demuxer_select="ac3_parser"
2819 asf_demuxer_select="riffdec"
2820 asf_o_demuxer_select="riffdec"
2821 asf_muxer_select="riffenc"
2822 asf_stream_muxer_select="asf_muxer"
2823 avi_demuxer_select="iso_media riffdec exif"
2824 avi_muxer_select="riffenc"
2825 avisynth_demuxer_deps="avisynth"
2826 avisynth_demuxer_select="riffdec"
2827 caf_demuxer_select="iso_media riffdec"
2828 dash_muxer_select="mp4_muxer"
2829 dirac_demuxer_select="dirac_parser"
2830 dts_demuxer_select="dca_parser"
2831 dtshd_demuxer_select="dca_parser"
2832 dv_demuxer_select="dvprofile"
2833 dv_muxer_select="dvprofile"
2834 dxa_demuxer_select="riffdec"
2835 eac3_demuxer_select="ac3_parser"
2836 f4v_muxer_select="mov_muxer"
2837 flac_demuxer_select="flac_parser"
2838 hds_muxer_select="flv_muxer"
2839 hls_muxer_select="mpegts_muxer"
2840 image2_alias_pix_demuxer_select="image2_demuxer"
2841 image2_brender_pix_demuxer_select="image2_demuxer"
2842 ipod_muxer_select="mov_muxer"
2843 ismv_muxer_select="mov_muxer"
2844 libnut_demuxer_deps="libnut"
2845 libnut_muxer_deps="libnut"
2846 matroska_audio_muxer_select="matroska_muxer"
2847 matroska_demuxer_select="iso_media riffdec"
2848 matroska_demuxer_suggest="bzlib lzo zlib"
2849 matroska_muxer_select="iso_media riffenc"
2850 mmf_muxer_select="riffenc"
2851 mov_demuxer_select="iso_media riffdec"
2852 mov_demuxer_suggest="zlib"
2853 mov_muxer_select="iso_media riffenc rtpenc_chain"
2854 mp3_demuxer_select="mpegaudio_parser"
2855 mp4_muxer_select="mov_muxer"
2856 mpegts_demuxer_select="iso_media"
2857 mpegts_muxer_select="adts_muxer latm_muxer"
2858 mpegtsraw_demuxer_select="mpegts_demuxer"
2859 mxf_d10_muxer_select="mxf_muxer"
2860 mxf_opatom_muxer_select="mxf_muxer"
2861 nut_muxer_select="riffenc"
2862 nuv_demuxer_select="riffdec"
2863 oga_muxer_select="ogg_muxer"
2864 ogg_demuxer_select="dirac_parse"
2865 ogv_muxer_select="ogg_muxer"
2866 opus_muxer_select="ogg_muxer"
2867 psp_muxer_select="mov_muxer"
2868 rtp_demuxer_select="sdp_demuxer"
2869 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2870 rtsp_demuxer_select="http_protocol rtpdec"
2871 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2872 sap_demuxer_select="sdp_demuxer"
2873 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2874 sdp_demuxer_select="rtpdec"
2875 smoothstreaming_muxer_select="ismv_muxer"
2876 spdif_muxer_select="aac_parser"
2877 spx_muxer_select="ogg_muxer"
2878 swf_demuxer_suggest="zlib"
2879 tak_demuxer_select="tak_parser"
2880 tg2_muxer_select="mov_muxer"
2881 tgp_muxer_select="mov_muxer"
2882 vobsub_demuxer_select="mpegps_demuxer"
2883 w64_demuxer_select="wav_demuxer"
2884 w64_muxer_select="wav_muxer"
2885 wav_demuxer_select="riffdec"
2886 wav_muxer_select="riffenc"
2887 webm_muxer_select="iso_media riffenc"
2888 webm_dash_manifest_demuxer_select="matroska_demuxer"
2889 wtv_demuxer_select="mpegts_demuxer riffdec"
2890 wtv_muxer_select="mpegts_muxer riffenc"
2891 xmv_demuxer_select="riffdec"
2892 xwma_demuxer_select="riffdec"
2893
2894 # indevs / outdevs
2895 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2896 alsa_outdev_deps="alsa_asoundlib_h"
2897 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2898 avfoundation_indev_select="avfoundation"
2899 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2900 caca_outdev_deps="libcaca"
2901 decklink_indev_deps="decklink pthreads"
2902 decklink_indev_extralibs="-lstdc++"
2903 decklink_outdev_deps="decklink pthreads"
2904 decklink_outdev_extralibs="-lstdc++"
2905 dshow_indev_deps="IBaseFilter"
2906 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2907 dv1394_indev_deps="dv1394"
2908 dv1394_indev_select="dv_demuxer"
2909 fbdev_indev_deps="linux_fb_h"
2910 fbdev_outdev_deps="linux_fb_h"
2911 gdigrab_indev_deps="CreateDIBSection"
2912 gdigrab_indev_extralibs="-lgdi32"
2913 gdigrab_indev_select="bmp_decoder"
2914 iec61883_indev_deps="libiec61883"
2915 jack_indev_deps="jack_jack_h"
2916 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2917 lavfi_indev_deps="avfilter"
2918 libcdio_indev_deps="libcdio"
2919 libdc1394_indev_deps="libdc1394"
2920 libv4l2_indev_deps="libv4l2"
2921 openal_indev_deps="openal"
2922 opengl_outdev_deps="opengl"
2923 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2924 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2925 pulse_indev_deps="libpulse"
2926 pulse_outdev_deps="libpulse"
2927 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2928 qtkit_indev_select="qtkit"
2929 sdl_outdev_deps="sdl"
2930 sndio_indev_deps="sndio_h"
2931 sndio_outdev_deps="sndio_h"
2932 v4l_indev_deps="linux_videodev_h"
2933 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2934 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2935 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2936 vfwcap_indev_extralibs="-lavicap32"
2937 x11grab_indev_deps="x11grab"
2938 x11grab_xcb_indev_deps="libxcb"
2939 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2940 xv_outdev_extralibs="-lXv -lX11 -lXext"
2941
2942 # protocols
2943 async_protocol_deps="threads"
2944 bluray_protocol_deps="libbluray"
2945 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2946 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2947 ffrtmpcrypt_protocol_select="tcp_protocol"
2948 ffrtmphttp_protocol_deps="!librtmp_protocol"
2949 ffrtmphttp_protocol_select="http_protocol"
2950 ftp_protocol_select="tcp_protocol"
2951 gopher_protocol_select="network"
2952 http_protocol_select="tcp_protocol"
2953 httpproxy_protocol_select="tcp_protocol"
2954 https_protocol_select="tls_protocol"
2955 icecast_protocol_select="http_protocol"
2956 librtmp_protocol_deps="librtmp"
2957 librtmpe_protocol_deps="librtmp"
2958 librtmps_protocol_deps="librtmp"
2959 librtmpt_protocol_deps="librtmp"
2960 librtmpte_protocol_deps="librtmp"
2961 libsmbclient_protocol_deps="libsmbclient gplv3"
2962 libssh_protocol_deps="libssh"
2963 mmsh_protocol_select="http_protocol"
2964 mmst_protocol_select="network"
2965 rtmp_protocol_deps="!librtmp_protocol"
2966 rtmp_protocol_select="tcp_protocol"
2967 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2968 rtmps_protocol_deps="!librtmp_protocol"
2969 rtmps_protocol_select="tls_protocol"
2970 rtmpt_protocol_select="ffrtmphttp_protocol"
2971 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2972 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2973 rtp_protocol_select="udp_protocol"
2974 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2975 sctp_protocol_select="network"
2976 srtp_protocol_select="rtp_protocol srtp"
2977 tcp_protocol_select="network"
2978 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2979 tls_gnutls_protocol_select="tcp_protocol"
2980 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2981 tls_openssl_protocol_select="tcp_protocol"
2982 tls_schannel_protocol_deps="schannel"
2983 tls_schannel_protocol_select="tcp_protocol"
2984 tls_securetransport_protocol_deps="securetransport"
2985 tls_securetransport_protocol_select="tcp_protocol"
2986 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2987 udp_protocol_select="network"
2988 udplite_protocol_select="network"
2989 unix_protocol_deps="sys_un_h"
2990 unix_protocol_select="network"
2991
2992 # filters
2993 afftfilt_filter_deps="avcodec"
2994 afftfilt_filter_select="fft"
2995 amovie_filter_deps="avcodec avformat"
2996 aresample_filter_deps="swresample"
2997 ass_filter_deps="libass"
2998 asyncts_filter_deps="avresample"
2999 atempo_filter_deps="avcodec"
3000 atempo_filter_select="rdft"
3001 azmq_filter_deps="libzmq"
3002 blackframe_filter_deps="gpl"
3003 boxblur_filter_deps="gpl"
3004 bs2b_filter_deps="libbs2b"
3005 colormatrix_filter_deps="gpl"
3006 cover_rect_filter_deps="avcodec avformat gpl"
3007 cropdetect_filter_deps="gpl"
3008 delogo_filter_deps="gpl"
3009 deshake_filter_select="pixelutils"
3010 drawtext_filter_deps="libfreetype"
3011 ebur128_filter_deps="gpl"
3012 eq_filter_deps="gpl"
3013 fftfilt_filter_deps="avcodec"
3014 fftfilt_filter_select="rdft"
3015 find_rect_filter_deps="avcodec avformat gpl"
3016 firequalizer_filter_deps="avcodec"
3017 firequalizer_filter_select="rdft"
3018 flite_filter_deps="libflite"
3019 framerate_filter_select="pixelutils"
3020 frei0r_filter_deps="frei0r dlopen"
3021 frei0r_src_filter_deps="frei0r dlopen"
3022 fspp_filter_deps="gpl"
3023 geq_filter_deps="gpl"
3024 histeq_filter_deps="gpl"
3025 hqdn3d_filter_deps="gpl"
3026 interlace_filter_deps="gpl"
3027 kerndeint_filter_deps="gpl"
3028 ladspa_filter_deps="ladspa dlopen"
3029 loudnorm_filter_deps="libebur128"
3030 mcdeint_filter_deps="avcodec gpl"
3031 movie_filter_deps="avcodec avformat"
3032 mpdecimate_filter_deps="gpl"
3033 mpdecimate_filter_select="pixelutils"
3034 mptestsrc_filter_deps="gpl"
3035 negate_filter_deps="lut_filter"
3036 nnedi_filter_deps="gpl"
3037 ocr_filter_deps="libtesseract"
3038 ocv_filter_deps="libopencv"
3039 owdenoise_filter_deps="gpl"
3040 pan_filter_deps="swresample"
3041 perspective_filter_deps="gpl"
3042 phase_filter_deps="gpl"
3043 pp7_filter_deps="gpl"
3044 pp_filter_deps="gpl postproc"
3045 pullup_filter_deps="gpl"
3046 removelogo_filter_deps="avcodec avformat swscale"
3047 repeatfields_filter_deps="gpl"
3048 resample_filter_deps="avresample"
3049 rubberband_filter_deps="librubberband"
3050 sab_filter_deps="gpl swscale"
3051 scale2ref_filter_deps="swscale"
3052 scale_filter_deps="swscale"
3053 select_filter_select="pixelutils"
3054 showcqt_filter_deps="avcodec avformat swscale"
3055 showcqt_filter_select="fft"
3056 showfreqs_filter_deps="avcodec"
3057 showfreqs_filter_select="fft"
3058 showspectrum_filter_deps="avcodec"
3059 showspectrum_filter_select="fft"
3060 showspectrumpic_filter_deps="avcodec"
3061 showspectrumpic_filter_select="fft"
3062 smartblur_filter_deps="gpl swscale"
3063 sofalizer_filter_deps="netcdf avcodec"
3064 sofalizer_filter_select="fft"
3065 spectrumsynth_filter_deps="avcodec"
3066 spectrumsynth_filter_select="fft"
3067 spp_filter_deps="gpl avcodec"
3068 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3069 stereo3d_filter_deps="gpl"
3070 subtitles_filter_deps="avformat avcodec libass"
3071 super2xsai_filter_deps="gpl"
3072 pixfmts_super2xsai_test_deps="super2xsai_filter"
3073 tinterlace_filter_deps="gpl"
3074 tinterlace_merge_test_deps="tinterlace_filter"
3075 tinterlace_pad_test_deps="tinterlace_filter"
3076 uspp_filter_deps="gpl avcodec"
3077 vidstabdetect_filter_deps="libvidstab"
3078 vidstabtransform_filter_deps="libvidstab"
3079 zmq_filter_deps="libzmq"
3080 zoompan_filter_deps="swscale"
3081 zscale_filter_deps="libzimg"
3082 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3083
3084 # examples
3085 avcodec_example_deps="avcodec avutil"
3086 avio_dir_cmd="avformat avutil"
3087 avio_reading="avformat avcodec avutil"
3088 decoding_encoding_example_deps="avcodec avformat avutil"
3089 demuxing_decoding_example_deps="avcodec avformat avutil"
3090 extract_mvs_example_deps="avcodec avformat avutil"
3091 filter_audio_example_deps="avfilter avutil"
3092 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3093 filtering_video_example_deps="avfilter avcodec avformat avutil"
3094 metadata_example_deps="avformat avutil"
3095 muxing_example_deps="avcodec avformat avutil swscale"
3096 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3097 remuxing_example_deps="avcodec avformat avutil"
3098 resampling_audio_example_deps="avutil swresample"
3099 scaling_video_example_deps="avutil swscale"
3100 transcode_aac_example_deps="avcodec avformat swresample"
3101 transcoding_example_deps="avfilter avcodec avformat avutil"
3102
3103 # libraries, in linking order
3104 avcodec_deps="avutil"
3105 avdevice_deps="avformat avcodec avutil"
3106 avfilter_deps="avutil"
3107 avformat_deps="avcodec avutil"
3108 avresample_deps="avutil"
3109 postproc_deps="avutil gpl"
3110 swresample_deps="avutil"
3111 swscale_deps="avutil"
3112
3113 # programs
3114 ffmpeg_deps="avcodec avfilter avformat swresample"
3115 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3116                null_filter
3117                setpts_filter trim_filter"
3118 ffplay_deps="avcodec avformat swscale swresample sdl"
3119 ffplay_libs='$sdl_libs'
3120 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3121 ffprobe_deps="avcodec avformat"
3122 ffserver_deps="avformat fork sarestart"
3123 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3124
3125 # documentation
3126 podpages_deps="perl"
3127 manpages_deps="perl pod2man"
3128 htmlpages_deps="perl"
3129 htmlpages_deps_any="makeinfo_html texi2html"
3130 txtpages_deps="perl makeinfo"
3131 doc_deps_any="manpages htmlpages podpages txtpages"
3132
3133 # default parameters
3134
3135 logfile="config.log"
3136
3137 # installation paths
3138 prefix_default="/usr/local"
3139 bindir_default='${prefix}/bin'
3140 datadir_default='${prefix}/share/ffmpeg'
3141 docdir_default='${prefix}/share/doc/ffmpeg'
3142 incdir_default='${prefix}/include'
3143 libdir_default='${prefix}/lib'
3144 mandir_default='${prefix}/share/man'
3145
3146 # toolchain
3147 ar_default="ar"
3148 cc_default="gcc"
3149 cxx_default="g++"
3150 host_cc_default="gcc"
3151 cp_f="cp -f"
3152 doxygen_default="doxygen"
3153 install="install"
3154 ln_s_default="ln -s -f"
3155 nm_default="nm -g"
3156 objformat="elf"
3157 pkg_config_default=pkg-config
3158 ranlib_default="ranlib"
3159 strip_default="strip"
3160 version_script='--version-script'
3161 yasmexe_default="yasm"
3162 windres_default="windres"
3163
3164 # OS
3165 target_os_default=$(tolower $(uname -s))
3166 host_os=$target_os_default
3167
3168 # machine
3169 if test "$target_os_default" = aix; then
3170     arch_default=$(uname -p)
3171     strip_default="strip -X32_64"
3172 else
3173     arch_default=$(uname -m)
3174 fi
3175 cpu="generic"
3176 intrinsics="none"
3177
3178 # configurable options
3179 enable $PROGRAM_LIST
3180 enable $DOCUMENT_LIST
3181 enable $EXAMPLE_LIST
3182 enable $(filter_out avresample $LIBRARY_LIST)
3183 enable stripping
3184
3185 enable asm
3186 enable debug
3187 enable doc
3188 enable faan faandct faanidct
3189 enable optimizations
3190 enable runtime_cpudetect
3191 enable safe_bitstream_reader
3192 enable static
3193 enable swscale_alpha
3194 enable valgrind_backtrace
3195
3196 sws_max_filter_size_default=256
3197 set_default sws_max_filter_size
3198
3199 # Enable platform codecs by default.
3200 enable audiotoolbox
3201
3202 # Enable hwaccels by default.
3203 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3204 enable xlib
3205
3206 enable vda_framework videotoolbox videotoolbox_encoder
3207
3208 # build settings
3209 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3210 LIBPREF="lib"
3211 LIBSUF=".a"
3212 FULLNAME='$(NAME)$(BUILDSUF)'
3213 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3214 SLIBPREF="lib"
3215 SLIBSUF=".so"
3216 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3217 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3218 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3219 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3220 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3221 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3222 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3223
3224 asflags_filter=echo
3225 cflags_filter=echo
3226 ldflags_filter=echo
3227
3228 AS_C='-c'
3229 AS_O='-o $@'
3230 CC_C='-c'
3231 CC_E='-E -o $@'
3232 CC_O='-o $@'
3233 CXX_C='-c'
3234 CXX_O='-o $@'
3235 OBJCC_C='-c'
3236 OBJCC_E='-E -o $@'
3237 OBJCC_O='-o $@'
3238 LD_O='-o $@'
3239 LD_LIB='-l%'
3240 LD_PATH='-L'
3241 HOSTCC_C='-c'
3242 HOSTCC_E='-E -o $@'
3243 HOSTCC_O='-o $@'
3244 HOSTLD_O='-o $@'
3245
3246 host_libs='-lm'
3247 host_cflags_filter=echo
3248 host_ldflags_filter=echo
3249
3250 target_path='$(CURDIR)'
3251
3252 # since the object filename is not given with the -MM flag, the compiler
3253 # is only able to print the basename, and we must add the path ourselves
3254 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3255 DEPFLAGS='-MM'
3256
3257 # find source path
3258 if test -f configure; then
3259     source_path=.
3260 else
3261     source_path=$(cd $(dirname "$0"); pwd)
3262     case "$source_path" in
3263         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3264     esac
3265     test -e "$source_path/config.h" &&
3266         die "Out of tree builds are impossible with config.h in source dir."
3267 fi
3268
3269 for v in "$@"; do
3270     r=${v#*=}
3271     l=${v%"$r"}
3272     r=$(sh_quote "$r")
3273     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3274 done
3275
3276 find_things(){
3277     thing=$1
3278     pattern=$2
3279     file=$source_path/$3
3280     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3281 }
3282
3283 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3284 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3285 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3286 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3287 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3288 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3289 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3290 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3291 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3292
3293 find_things_extern(){
3294     thing=$1
3295     pattern=$2
3296     file=$source_path/$3
3297     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3298 }
3299
3300 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3301 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3302
3303 ALL_COMPONENTS="
3304     $BSF_LIST
3305     $DECODER_LIST
3306     $DEMUXER_LIST
3307     $ENCODER_LIST
3308     $FILTER_LIST
3309     $HWACCEL_LIST
3310     $INDEV_LIST
3311     $MUXER_LIST
3312     $OUTDEV_LIST
3313     $PARSER_LIST
3314     $PROTOCOL_LIST
3315 "
3316
3317 for n in $COMPONENT_LIST; do
3318     v=$(toupper ${n%s})_LIST
3319     eval enable \$$v
3320     eval ${n}_if_any="\$$v"
3321 done
3322
3323 enable $ARCH_EXT_LIST
3324
3325 die_unknown(){
3326     echo "Unknown option \"$1\"."
3327     echo "See $0 --help for available options."
3328     exit 1
3329 }
3330
3331 print_in_columns() {
3332     cols=$(expr $ncols / 24)
3333     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3334 }
3335
3336 show_list() {
3337     suffix=_$1
3338     shift
3339     echo $* | sed s/$suffix//g | print_in_columns
3340     exit 0
3341 }
3342
3343 rand_list(){
3344     IFS=', '
3345     set -- $*
3346     unset IFS
3347     for thing; do
3348         comp=${thing%:*}
3349         prob=${thing#$comp}
3350         prob=${prob#:}
3351         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3352         echo "prob ${prob:-0.5}"
3353         printf '%s\n' $comp
3354     done
3355 }
3356
3357 do_random(){
3358     action=$1
3359     shift
3360     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3361     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3362 }
3363
3364 for opt do
3365     optval="${opt#*=}"
3366     case "$opt" in
3367         --extra-ldflags=*)
3368             add_ldflags $optval
3369         ;;
3370         --extra-ldexeflags=*)
3371             add_ldexeflags $optval
3372         ;;
3373         --extra-ldlibflags=*)
3374             add_ldlibflags $optval
3375         ;;
3376         --extra-libs=*)
3377             add_extralibs $optval
3378         ;;
3379         --disable-devices)
3380             disable $INDEV_LIST $OUTDEV_LIST
3381         ;;
3382         --enable-debug=*)
3383             debuglevel="$optval"
3384         ;;
3385         --disable-programs)
3386             disable $PROGRAM_LIST
3387         ;;
3388         --disable-everything)
3389             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3390         ;;
3391         --disable-all)
3392             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3393             disable $LIBRARY_LIST $PROGRAM_LIST doc
3394             enable avutil
3395         ;;
3396         --enable-random|--disable-random)
3397             action=${opt%%-random}
3398             do_random ${action#--} $COMPONENT_LIST
3399         ;;
3400         --enable-random=*|--disable-random=*)
3401             action=${opt%%-random=*}
3402             do_random ${action#--} $optval
3403         ;;
3404         --enable-*=*|--disable-*=*)
3405             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3406             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3407             eval list=\$$(toupper $thing)_LIST
3408             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3409             list=$(filter "$name" $list)
3410             [ "$list" = "" ] && warn "Option $opt did not match anything"
3411             $action $list
3412         ;;
3413         --enable-?*|--disable-?*)
3414             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3415             if is_in $option $COMPONENT_LIST; then
3416                 test $action = disable && action=unset
3417                 eval $action \$$(toupper ${option%s})_LIST
3418             elif is_in $option $CMDLINE_SELECT; then
3419                 $action $option
3420             else
3421                 die_unknown $opt
3422             fi
3423         ;;
3424         --list-*)
3425             NAME="${opt#--list-}"
3426             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3427             NAME=${NAME%s}
3428             eval show_list $NAME \$$(toupper $NAME)_LIST
3429         ;;
3430         --help|-h) show_help
3431         ;;
3432         --fatal-warnings) enable fatal_warnings
3433         ;;
3434         *)
3435             optname="${opt%%=*}"
3436             optname="${optname#--}"
3437             optname=$(echo "$optname" | sed 's/-/_/g')
3438             if is_in $optname $CMDLINE_SET; then
3439                 eval $optname='$optval'
3440             elif is_in $optname $CMDLINE_APPEND; then
3441                 append $optname "$optval"
3442             else
3443                 die_unknown $opt
3444             fi
3445         ;;
3446     esac
3447 done
3448
3449 for e in $env; do
3450     eval "export $e"
3451 done
3452
3453 disabled logging && logfile=/dev/null
3454
3455 # Disable all the library-specific components if the library itself
3456 # is disabled, see AVCODEC_LIST and following _LIST variables.
3457
3458 disable_components(){
3459     disabled ${1} && disable $(
3460         eval components="\$$(toupper ${1})_COMPONENTS"
3461         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3462     )
3463 }
3464
3465 map 'disable_components $v' $LIBRARY_LIST
3466
3467 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3468 set >> $logfile
3469
3470 test -n "$valgrind" && toolchain="valgrind-memcheck"
3471
3472 case "$toolchain" in
3473     *-asan)
3474         cc_default="${toolchain%-asan}"
3475         add_cflags  -fsanitize=address
3476         add_ldflags -fsanitize=address
3477     ;;
3478     *-msan)
3479         cc_default="${toolchain%-msan}"
3480         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3481         add_ldflags -fsanitize=memory
3482     ;;
3483     *-tsan)
3484         cc_default="${toolchain%-tsan}"
3485         add_cflags  -fsanitize=thread -pie
3486         add_ldflags -fsanitize=thread -pie
3487         case "$toolchain" in
3488             gcc-tsan)
3489                 add_cflags  -fPIC
3490                 add_ldflags -fPIC
3491                 ;;
3492         esac
3493     ;;
3494     *-usan)
3495         cc_default="${toolchain%-usan}"
3496         add_cflags  -fsanitize=undefined
3497         add_ldflags -fsanitize=undefined
3498     ;;
3499     valgrind-*)
3500         target_exec_default="valgrind"
3501         case "$toolchain" in
3502             valgrind-massif)
3503                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3504                 ;;
3505             valgrind-memcheck)
3506                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3507                 ;;
3508         esac
3509     ;;
3510     msvc)
3511         # Check whether the current MSVC version needs the C99 converter.
3512         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3513         # support enough of C99 to build ffmpeg. Default to the new
3514         # behaviour if the regexp was unable to match anything, since this
3515         # successfully parses the version number of existing supported
3516         # versions that require the converter (MSVC 2010 and 2012).
3517         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3518         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3519             cc_default="cl"
3520         else
3521             cc_default="c99wrap cl"
3522         fi
3523         ld_default="$source_path/compat/windows/mslink"
3524         nm_default="dumpbin -symbols"
3525         ar_default="lib"
3526         case "$arch" in
3527         arm*)
3528             as_default="armasm"
3529             ;;
3530         esac
3531         target_os_default="win32"
3532         # Use a relative path for TMPDIR. This makes sure all the
3533         # ffconf temp files are written with a relative path, avoiding
3534         # issues with msys/win32 path conversion for MSVC parameters
3535         # such as -Fo<file> or -out:<file>.
3536         TMPDIR=.
3537     ;;
3538     icl)
3539         cc_default="icl"
3540         ld_default="xilink"
3541         nm_default="dumpbin -symbols"
3542         ar_default="xilib"
3543         target_os_default="win32"
3544         TMPDIR=.
3545     ;;
3546     gcov)
3547         add_cflags  -fprofile-arcs -ftest-coverage
3548         add_ldflags -fprofile-arcs -ftest-coverage
3549     ;;
3550     llvm-cov)
3551         add_cflags -fprofile-arcs -ftest-coverage
3552         add_ldflags --coverage
3553     ;;
3554     hardened)
3555         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3556         add_cflags   -fno-strict-overflow -fstack-protector-all
3557         add_ldflags  -Wl,-z,relro -Wl,-z,now
3558     ;;
3559     ?*)
3560         die "Unknown toolchain $toolchain"
3561     ;;
3562 esac
3563
3564 test -n "$cross_prefix" && enable cross_compile
3565
3566 if enabled cross_compile; then
3567     test -n "$arch" && test -n "$target_os" ||
3568         die "Must specify target arch and OS when cross-compiling"
3569 fi
3570
3571 ar_default="${cross_prefix}${ar_default}"
3572 cc_default="${cross_prefix}${cc_default}"
3573 cxx_default="${cross_prefix}${cxx_default}"
3574 nm_default="${cross_prefix}${nm_default}"
3575 pkg_config_default="${cross_prefix}${pkg_config_default}"
3576 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3577     ranlib_default="${cross_prefix}${ranlib_default} -D"
3578 else
3579     ranlib_default="${cross_prefix}${ranlib_default}"
3580 fi
3581 strip_default="${cross_prefix}${strip_default}"
3582 windres_default="${cross_prefix}${windres_default}"
3583
3584 sysinclude_default="${sysroot}/usr/include"
3585
3586 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3587     target_exec target_os yasmexe
3588 enabled cross_compile || host_cc_default=$cc
3589 set_default host_cc
3590
3591 pkg_config_fail_message=""
3592 if ! $pkg_config --version >/dev/null 2>&1; then
3593     warn "$pkg_config not found, library detection may fail."
3594     pkg_config=false
3595 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3596     pkg_config_fail_message="
3597 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3598 fi
3599
3600 if test $doxygen != $doxygen_default && \
3601   ! $doxygen --version >/dev/null 2>&1; then
3602     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3603 fi
3604
3605 exesuf() {
3606     case $1 in
3607         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3608     esac
3609 }
3610
3611 EXESUF=$(exesuf $target_os)
3612 HOSTEXESUF=$(exesuf $host_os)
3613
3614 # set temporary file name
3615 : ${TMPDIR:=$TEMPDIR}
3616 : ${TMPDIR:=$TMP}
3617 : ${TMPDIR:=/tmp}
3618
3619 if [ -n "$tempprefix" ] ; then
3620     mktemp(){
3621         echo $tempprefix.${HOSTNAME}.${UID}
3622     }
3623 elif ! check_cmd mktemp -u XXXXXX; then
3624     # simple replacement for missing mktemp
3625     # NOT SAFE FOR GENERAL USE
3626     mktemp(){
3627         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3628     }
3629 fi
3630
3631 tmpfile(){
3632     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3633         (set -C; exec > $tmp) 2>/dev/null ||
3634         die "Unable to create temporary file in $TMPDIR."
3635     append TMPFILES $tmp
3636     eval $1=$tmp
3637 }
3638
3639 trap 'rm -f -- $TMPFILES' EXIT
3640
3641 tmpfile TMPASM .asm
3642 tmpfile TMPC   .c
3643 tmpfile TMPCPP .cpp
3644 tmpfile TMPE   $EXESUF
3645 tmpfile TMPH   .h
3646 tmpfile TMPM   .m
3647 tmpfile TMPO   .o
3648 tmpfile TMPS   .S
3649 tmpfile TMPSH  .sh
3650 tmpfile TMPV   .ver
3651
3652 unset -f mktemp
3653
3654 chmod +x $TMPE
3655
3656 # make sure we can execute files in $TMPDIR
3657 cat > $TMPSH 2>> $logfile <<EOF
3658 #! /bin/sh
3659 EOF
3660 chmod +x $TMPSH >> $logfile 2>&1
3661 if ! $TMPSH >> $logfile 2>&1; then
3662     cat <<EOF
3663 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3664 variable to another directory and make sure that it is not mounted noexec.
3665 EOF
3666     die "Sanity test failed."
3667 fi
3668
3669 armasm_flags(){
3670     for flag; do
3671         case $flag in
3672             # Filter out MSVC cl.exe options from cflags that shouldn't
3673             # be passed to gas-preprocessor
3674             -M[TD]*)                                            ;;
3675             *)                  echo $flag                      ;;
3676         esac
3677    done
3678 }
3679
3680 ccc_flags(){
3681     for flag; do
3682         case $flag in
3683             -std=c99)           echo -c99                       ;;
3684             -mcpu=*)            echo -arch ${flag#*=}           ;;
3685             -mieee)             echo -ieee                      ;;
3686             -O*|-fast)          echo $flag                      ;;
3687             -fno-math-errno)    echo -assume nomath_errno       ;;
3688             -g)                 echo -g3                        ;;
3689             -Wall)              echo -msg_enable level2         ;;
3690             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3691             -Wl,*)              echo $flag                      ;;
3692             -f*|-W*)                                            ;;
3693             *)                  echo $flag                      ;;
3694         esac
3695    done
3696 }
3697
3698 cparser_flags(){
3699     for flag; do
3700         case $flag in
3701             -Wno-switch)             echo -Wno-switch-enum ;;
3702             -Wno-format-zero-length) ;;
3703             -Wdisabled-optimization) ;;
3704             -Wno-pointer-sign)       echo -Wno-other ;;
3705             *)                       echo $flag ;;
3706         esac
3707     done
3708 }
3709
3710 msvc_common_flags(){
3711     for flag; do
3712         case $flag in
3713             # In addition to specifying certain flags under the compiler
3714             # specific filters, they must be specified here as well or else the
3715             # generic catch all at the bottom will print the original flag.
3716             -Wall)                ;;
3717             -std=c99)             ;;
3718             # Common flags
3719             -fomit-frame-pointer) ;;
3720             -g)                   echo -Z7 ;;
3721             -fno-math-errno)      ;;
3722             -fno-common)          ;;
3723             -fno-signed-zeros)    ;;
3724             -fPIC)                ;;
3725             -mthumb)              ;;
3726             -march=*)             ;;
3727             -lz)                  echo zlib.lib ;;
3728             -lavifil32)           echo vfw32.lib ;;
3729             -lavicap32)           echo vfw32.lib user32.lib ;;
3730             -lx264)               echo libx264.lib ;;
3731             -l*)                  echo ${flag#-l}.lib ;;
3732             -LARGEADDRESSAWARE)   echo $flag ;;
3733             -L*)                  echo -libpath:${flag#-L} ;;
3734             *)                    echo $flag ;;
3735         esac
3736     done
3737 }
3738
3739 msvc_flags(){
3740     msvc_common_flags "$@"
3741     for flag; do
3742         case $flag in
3743             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3744                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3745                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3746                                        -wd4307 \
3747                                        -wd4273 -wd4554 -wd4701 ;;
3748         esac
3749     done
3750 }
3751
3752 icl_flags(){
3753     msvc_common_flags "$@"
3754     for flag; do
3755         case $flag in
3756             # Despite what Intel's documentation says -Wall, which is supported
3757             # on Windows, does enable remarks so disable them here.
3758             -Wall)                echo $flag -Qdiag-disable:remark ;;
3759             -std=c99)             echo -Qstd=c99 ;;
3760             -flto)                echo -ipo ;;
3761         esac
3762     done
3763 }
3764
3765 icc_flags(){
3766     for flag; do
3767         case $flag in
3768             -flto)                echo -ipo ;;
3769             *)                    echo $flag ;;
3770         esac
3771     done
3772 }
3773
3774 pgi_flags(){
3775     for flag; do
3776         case $flag in
3777             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3778             -fomit-frame-pointer) echo -Mnoframe ;;
3779             -g)                   echo -gopt ;;
3780             *)                    echo $flag ;;
3781         esac
3782     done
3783 }
3784
3785 suncc_flags(){
3786     for flag; do
3787         case $flag in
3788             -march=*|-mcpu=*)
3789                 case "${flag#*=}" in
3790                     native)                   echo -xtarget=native       ;;
3791                     v9|niagara)               echo -xarch=sparc          ;;
3792                     ultrasparc)               echo -xarch=sparcvis       ;;
3793                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3794                     i586|pentium)             echo -xchip=pentium        ;;
3795                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3796                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3797                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3798                     pentium4*)          echo -xtarget=pentium4           ;;
3799                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3800                     *-sse3)             echo -xarch=sse3                 ;;
3801                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3802                     bonnell)                   echo -xarch=ssse3         ;;
3803                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3804                     westmere)                  echo -xtarget=westmere    ;;
3805                     silvermont)                echo -xarch=sse4_2        ;;
3806                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3807                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3808                                                echo -xarch=avx           ;;
3809                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3810                     btver1)                    echo -xarch=amdsse4a      ;;
3811                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3812                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3813                     k8|opteron|athlon64|athlon-fx)
3814                                                echo -xarch=sse2a         ;;
3815                     athlon*)                   echo -xarch=pentium_proa  ;;
3816                 esac
3817                 ;;
3818             -std=c99)             echo -xc99              ;;
3819             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3820             -fPIC)                echo -KPIC -xcode=pic32 ;;
3821             -W*,*)                echo $flag              ;;
3822             -f*-*|-W*|-mimpure-text)                      ;;
3823             -shared)              echo -G                 ;;
3824             *)                    echo $flag              ;;
3825         esac
3826     done
3827 }
3828
3829 tms470_flags(){
3830     for flag; do
3831         case $flag in
3832             -march=*|-mcpu=*)
3833                 case "${flag#*=}" in
3834                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3835                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3836                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3837                     armv6*|arm11*)          echo -mv=6   ;;
3838                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3839                                             echo -mv=5e  ;;
3840                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3841                 esac
3842                 ;;
3843             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3844             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3845             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3846             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3847             -msoft-float)   echo --float_support=vfplib       ;;
3848             -O[0-3]|-mf=*)  echo $flag                        ;;
3849             -g)             echo -g -mn                       ;;
3850             -pds=*)         echo $flag                        ;;
3851             -D*|-I*)        echo $flag                        ;;
3852             --gcc|--abi=*)  echo $flag                        ;;
3853             -me)            echo $flag                        ;;
3854         esac
3855     done
3856 }
3857
3858 probe_cc(){
3859     pfx=$1
3860     _cc=$2
3861     first=$3
3862
3863     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3864     unset _ld_o _ldflags _ld_lib _ld_path
3865     unset _depflags _DEPCMD _DEPFLAGS
3866     _flags_filter=echo
3867
3868     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3869         true # no-op to avoid reading stdin in following checks
3870     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3871         _type=llvm_gcc
3872         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3873         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3874         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3875         _cflags_speed='-O3'
3876         _cflags_size='-Os'
3877     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3878         _type=gcc
3879         gcc_version=$($_cc --version | head -n1)
3880         gcc_basever=$($_cc -dumpversion)
3881         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3882         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3883         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3884         case $gcc_basever in
3885             2) ;;
3886             2.*) ;;
3887             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3888         esac
3889         if [ "$first" = true ]; then
3890             case $gcc_basever in
3891                 4.2*)
3892                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3893             esac
3894         fi
3895         _cflags_speed='-O3'
3896         _cflags_size='-Os'
3897     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3898         _type=icc
3899         _ident=$($_cc --version | head -n1)
3900         _depflags='-MMD'
3901         _cflags_speed='-O3'
3902         _cflags_size='-Os'
3903         _cflags_noopt='-O1'
3904         _flags_filter=icc_flags
3905     elif $_cc -v 2>&1 | grep -q xlc; then
3906         _type=xlc
3907         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3908         _cflags_speed='-O5'
3909         _cflags_size='-O5 -qcompact'
3910     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3911         _type=ccc
3912         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3913         _DEPFLAGS='-M'
3914         _cflags_speed='-fast'
3915         _cflags_size='-O1'
3916         _flags_filter=ccc_flags
3917     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3918         test -d "$sysroot" || die "No valid sysroot specified."
3919         _type=armcc
3920         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3921         armcc_conf="$PWD/armcc.conf"
3922         $_cc --arm_linux_configure                 \
3923              --arm_linux_config_file="$armcc_conf" \
3924              --configure_sysroot="$sysroot"        \
3925              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3926              die "Error creating armcc configuration file."
3927         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3928         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3929         as_default="${cross_prefix}gcc"
3930         _depflags='-MMD'
3931         _cflags_speed='-O3'
3932         _cflags_size='-Os'
3933     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3934         _type=tms470
3935         _ident=$($_cc -version | head -n1 | tr -s ' ')
3936         _flags='--gcc --abi=eabi -me'
3937         _cc_e='-ppl -fe=$@'
3938         _cc_o='-fe=$@'
3939         _depflags='-ppa -ppd=$(@:.o=.d)'
3940         _cflags_speed='-O3 -mf=5'
3941         _cflags_size='-O3 -mf=2'
3942         _flags_filter=tms470_flags
3943     elif $_cc -v 2>&1 | grep -q clang; then
3944         _type=clang
3945         _ident=$($_cc --version 2>/dev/null | head -n1)
3946         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3947         _cflags_speed='-O3'
3948         _cflags_size='-Os'
3949     elif $_cc -V 2>&1 | grep -q Sun; then
3950         _type=suncc
3951         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3952         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3953         _DEPFLAGS='-xM1 -xc99'
3954         _ldflags='-std=c99'
3955         _cflags_speed='-O5'
3956         _cflags_size='-O5 -xspace'
3957         _flags_filter=suncc_flags
3958     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3959         _type=pathscale
3960         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3961         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3962         _cflags_speed='-O2'
3963         _cflags_size='-Os'
3964         _flags_filter='filter_out -Wdisabled-optimization'
3965     elif $_cc -v 2>&1 | grep -q Open64; then
3966         _type=open64
3967         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3968         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3969         _cflags_speed='-O2'
3970         _cflags_size='-Os'
3971         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3972     elif $_cc -V 2>&1 | grep -q Portland; then
3973         _type=pgi
3974         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3975         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3976         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3977         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3978         _cflags_noopt="-O"
3979         _flags_filter=pgi_flags
3980     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3981         _type=armasm
3982         _ident=$($_cc | head -n1)
3983         # 4509: "This form of conditional instruction is deprecated"
3984         _flags="-nologo -ignore 4509"
3985         _flags_filter=armasm_flags
3986     elif $_cc 2>&1 | grep -q Intel; then
3987         _type=icl
3988         _ident=$($_cc 2>&1 | head -n1)
3989         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3990         # Not only is O3 broken on 13.x+ but it is slower on all previous
3991         # versions (tested) as well.
3992         _cflags_speed="-O2"
3993         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3994         if $_cc 2>&1 | grep -q Linker; then
3995             _ld_o='-out:$@'
3996         else
3997             _ld_o='-Fe$@'
3998         fi
3999         _cc_o='-Fo$@'
4000         _cc_e='-P'
4001         _flags_filter=icl_flags
4002         _ld_lib='lib%.a'
4003         _ld_path='-libpath:'
4004         # -Qdiag-error to make icl error when seeing certain unknown arguments
4005         _flags='-nologo -Qdiag-error:4044,10157'
4006         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4007         # with MSVC which enables it by default.
4008         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4009         disable stripping
4010     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4011         _type=msvc
4012         _ident=$($_cc 2>&1 | head -n1)
4013         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4014         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4015         _cflags_speed="-O2"
4016         _cflags_size="-O1"
4017         if $_cc -nologo- 2>&1 | grep -q Linker; then
4018             _ld_o='-out:$@'
4019         else
4020             _ld_o='-Fe$@'
4021         fi
4022         _cc_o='-Fo$@'
4023         _cc_e='-P -Fi$@'
4024         _flags_filter=msvc_flags
4025         _ld_lib='lib%.a'
4026         _ld_path='-libpath:'
4027         _flags='-nologo'
4028         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4029         disable stripping
4030     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4031         _type=cparser
4032         _ident=$($_cc --version | head -n1)
4033         _depflags='-MMD'
4034         _cflags_speed='-O4'
4035         _cflags_size='-O2'
4036         _flags_filter=cparser_flags
4037     fi
4038
4039     eval ${pfx}_type=\$_type
4040     eval ${pfx}_ident=\$_ident
4041 }
4042
4043 set_ccvars(){
4044     eval ${1}_C=\${_cc_c-\${${1}_C}}
4045     eval ${1}_E=\${_cc_e-\${${1}_E}}
4046     eval ${1}_O=\${_cc_o-\${${1}_O}}
4047
4048     if [ -n "$_depflags" ]; then
4049         eval ${1}_DEPFLAGS=\$_depflags
4050     else
4051         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4052         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4053         eval DEP${1}FLAGS=\$_flags
4054     fi
4055 }
4056
4057 probe_cc cc "$cc" "true"
4058 cflags_filter=$_flags_filter
4059 cflags_speed=$_cflags_speed
4060 cflags_size=$_cflags_size
4061 cflags_noopt=$_cflags_noopt
4062 add_cflags $_flags $_cflags
4063 cc_ldflags=$_ldflags
4064 set_ccvars CC
4065
4066 probe_cc hostcc "$host_cc"
4067 host_cflags_filter=$_flags_filter
4068 add_host_cflags  $_flags $_cflags
4069 set_ccvars HOSTCC
4070
4071 test -n "$cc_type" && enable $cc_type ||
4072     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4073
4074 : ${as_default:=$cc}
4075 : ${objcc_default:=$cc}
4076 : ${dep_cc_default:=$cc}
4077 : ${ld_default:=$cc}
4078 : ${host_ld_default:=$host_cc}
4079 set_default ar as objcc dep_cc ld ln_s host_ld windres
4080
4081 probe_cc as "$as"
4082 asflags_filter=$_flags_filter
4083 add_asflags $_flags $_cflags
4084 set_ccvars AS
4085
4086 probe_cc objcc "$objcc"
4087 objcflags_filter=$_flags_filter
4088 add_objcflags $_flags $_cflags
4089 set_ccvars OBJC
4090
4091 probe_cc ld "$ld"
4092 ldflags_filter=$_flags_filter
4093 add_ldflags $_flags $_ldflags
4094 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4095 LD_O=${_ld_o-$LD_O}
4096 LD_LIB=${_ld_lib-$LD_LIB}
4097 LD_PATH=${_ld_path-$LD_PATH}
4098
4099 probe_cc hostld "$host_ld"
4100 host_ldflags_filter=$_flags_filter
4101 add_host_ldflags $_flags $_ldflags
4102 HOSTLD_O=${_ld_o-$HOSTLD_O}
4103
4104 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4105     probe_cc depcc "$dep_cc"
4106     CCDEP=${_DEPCMD:-$DEPCMD}
4107     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4108     DEPCCFLAGS=$_flags
4109 fi
4110
4111 if $ar 2>&1 | grep -q Microsoft; then
4112     arflags="-nologo"
4113     ar_o='-out:$@'
4114 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4115     arflags="rq"
4116     ar_o='$@'
4117 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4118     arflags='-Xany -r -c'
4119     ar_o='$@'
4120 elif $ar 2>&1 | grep -q "\[D\] "; then
4121     arflags="rcD"
4122     ar_o='$@'
4123 else
4124     arflags="rc"
4125     ar_o='$@'
4126 fi
4127
4128 add_cflags $extra_cflags
4129 add_cxxflags $extra_cxxflags
4130 add_objcflags $extra_objcflags
4131 add_asflags $extra_cflags
4132
4133 if test -n "$sysroot"; then
4134     case "$cc_type" in
4135         gcc|llvm_gcc|clang)
4136             add_cppflags --sysroot="$sysroot"
4137             add_ldflags --sysroot="$sysroot"
4138 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4139             add_cppflags -isysroot "$sysroot"
4140             add_ldflags -isysroot "$sysroot"
4141         ;;
4142         tms470)
4143             add_cppflags -I"$sysinclude"
4144             add_ldflags  --sysroot="$sysroot"
4145         ;;
4146     esac
4147 fi
4148
4149 if test "$cpu" = host; then
4150     enabled cross_compile &&
4151         die "--cpu=host makes no sense when cross-compiling."
4152
4153     case "$cc_type" in
4154         gcc|llvm_gcc)
4155             check_native(){
4156                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4157                 sed -n "/cc1.*$1=/{
4158                             s/.*$1=\\([^ ]*\\).*/\\1/
4159                             p
4160                             q
4161                         }" $TMPE
4162             }
4163             cpu=$(check_native -march || check_native -mcpu)
4164         ;;
4165         clang)
4166             check_native(){
4167                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4168                 sed -n "/cc1.*-target-cpu /{
4169                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4170                             p
4171                             q
4172                         }" $TMPE
4173             }
4174             cpu=$(check_native -march)
4175         ;;
4176     esac
4177
4178     test "${cpu:-host}" = host &&
4179         die "--cpu=host not supported with compiler $cc"
4180 fi
4181
4182 # Deal with common $arch aliases
4183 case "$arch" in
4184     aarch64|arm64)
4185         arch="aarch64"
4186     ;;
4187     arm*|iPad*|iPhone*)
4188         arch="arm"
4189     ;;
4190     mips*|IP*)
4191         case "$arch" in
4192         *el)
4193             add_cppflags -EL
4194             add_ldflags -EL
4195         ;;
4196         *eb)
4197             add_cppflags -EB
4198             add_ldflags -EB
4199         ;;
4200         esac
4201         arch="mips"
4202     ;;
4203     parisc*|hppa*)
4204         arch="parisc"
4205     ;;
4206     "Power Macintosh"|ppc*|powerpc*)
4207         arch="ppc"
4208     ;;
4209     s390|s390x)
4210         arch="s390"
4211     ;;
4212     sh4|sh)
4213         arch="sh4"
4214     ;;
4215     sun4u|sparc*)
4216         arch="sparc"
4217     ;;
4218     tilegx|tile-gx)
4219         arch="tilegx"
4220     ;;
4221     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4222         arch="x86"
4223     ;;
4224 esac
4225
4226 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4227 enable $arch
4228
4229 # Add processor-specific flags
4230 if enabled aarch64; then
4231
4232     case $cpu in
4233         armv*)
4234             cpuflags="-march=$cpu"
4235         ;;
4236         *)
4237             cpuflags="-mcpu=$cpu"
4238         ;;
4239     esac
4240
4241 elif enabled alpha; then
4242
4243     cpuflags="-mcpu=$cpu"
4244
4245 elif enabled arm; then
4246
4247     check_arm_arch() {
4248         check_cpp_condition stddef.h \
4249             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4250             $cpuflags
4251     }
4252
4253     probe_arm_arch() {
4254         if   check_arm_arch 4;        then echo armv4
4255         elif check_arm_arch 4T;       then echo armv4t
4256         elif check_arm_arch 5;        then echo armv5
4257         elif check_arm_arch 5E;       then echo armv5e
4258         elif check_arm_arch 5T;       then echo armv5t
4259         elif check_arm_arch 5TE;      then echo armv5te
4260         elif check_arm_arch 5TEJ;     then echo armv5te
4261         elif check_arm_arch 6;        then echo armv6
4262         elif check_arm_arch 6J;       then echo armv6j
4263         elif check_arm_arch 6K;       then echo armv6k
4264         elif check_arm_arch 6Z;       then echo armv6z
4265         elif check_arm_arch 6ZK;      then echo armv6zk
4266         elif check_arm_arch 6T2;      then echo armv6t2
4267         elif check_arm_arch 7;        then echo armv7
4268         elif check_arm_arch 7A  7_A;  then echo armv7-a
4269         elif check_arm_arch 7S;       then echo armv7-a
4270         elif check_arm_arch 7R  7_R;  then echo armv7-r
4271         elif check_arm_arch 7M  7_M;  then echo armv7-m
4272         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4273         elif check_arm_arch 8A  8_A;  then echo armv8-a
4274         fi
4275     }
4276
4277     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4278
4279     case $cpu in
4280         armv*)
4281             cpuflags="-march=$cpu"
4282             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4283         ;;
4284         *)
4285             cpuflags="-mcpu=$cpu"
4286             case $cpu in
4287                 cortex-a*)                               subarch=armv7a  ;;
4288                 cortex-r*)                               subarch=armv7r  ;;
4289                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4290                 arm11*)                                  subarch=armv6   ;;
4291                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4292                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4293                 *)                             subarch=$(probe_arm_arch) ;;
4294             esac
4295         ;;
4296     esac
4297
4298     case "$subarch" in
4299         armv5t*)    enable fast_clz                ;;
4300         armv[6-8]*)
4301             enable fast_clz
4302             disabled fast_unaligned || enable fast_unaligned
4303             ;;
4304     esac
4305
4306 elif enabled avr32; then
4307
4308     case $cpu in
4309         ap7[02]0[0-2])
4310             subarch="avr32_ap"
4311             cpuflags="-mpart=$cpu"
4312         ;;
4313         ap)
4314             subarch="avr32_ap"
4315             cpuflags="-march=$cpu"
4316         ;;
4317         uc3[ab]*)
4318             subarch="avr32_uc"
4319             cpuflags="-mcpu=$cpu"
4320         ;;
4321         uc)
4322             subarch="avr32_uc"
4323             cpuflags="-march=$cpu"
4324         ;;
4325     esac
4326
4327 elif enabled bfin; then
4328
4329     cpuflags="-mcpu=$cpu"
4330
4331 elif enabled mips; then
4332
4333     cpuflags="-march=$cpu"
4334
4335     if [ "$cpu" != "generic" ]; then
4336         disable mips32r2
4337         disable mips32r5
4338         disable mips64r2
4339         disable mips32r6
4340         disable mips64r6
4341         disable loongson2
4342         disable loongson3
4343
4344         case $cpu in
4345             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4346                 enable mips32r2
4347                 disable msa
4348             ;;
4349             p5600|i6400)
4350                 disable mipsdsp
4351                 disable mipsdspr2
4352             ;;
4353             loongson*)
4354                 enable loongson2
4355                 enable loongson3
4356                 enable local_aligned_8 local_aligned_16 local_aligned_32
4357                 enable simd_align_16
4358                 enable fast_64bit
4359                 enable fast_clz
4360                 enable fast_cmov
4361                 enable fast_unaligned
4362                 disable aligned_stack
4363                 case $cpu in
4364                     loongson3*)
4365                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4366                     ;;
4367                     loongson2e)
4368                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4369                     ;;
4370                     loongson2f)
4371                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4372                     ;;
4373                 esac
4374             ;;
4375             *)
4376                 # Unknown CPU. Disable everything.
4377                 warn "unknown CPU. Disabling all MIPS optimizations."
4378                 disable mipsfpu
4379                 disable mipsdsp
4380                 disable mipsdspr2
4381                 disable msa
4382                 disable mmi
4383             ;;
4384         esac
4385
4386         case $cpu in
4387             24kc)
4388                 disable mipsfpu
4389                 disable mipsdsp
4390                 disable mipsdspr2
4391             ;;
4392             24kf*)
4393                 disable mipsdsp
4394                 disable mipsdspr2
4395             ;;
4396             24kec|34kc|1004kc)
4397                 disable mipsfpu
4398                 disable mipsdspr2
4399             ;;
4400             24kef*|34kf*|1004kf*)
4401                 disable mipsdspr2
4402             ;;
4403             74kc)
4404                 disable mipsfpu
4405             ;;
4406             p5600)
4407                 enable mips32r5
4408                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4409             ;;
4410             i6400)
4411                 enable mips64r6
4412                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4413             ;;
4414         esac
4415     else
4416         # We do not disable anything. Is up to the user to disable the unwanted features.
4417         warn 'generic cpu selected'
4418     fi
4419
4420 elif enabled ppc; then
4421
4422     disable ldbrx
4423
4424     case $(tolower $cpu) in
4425         601|ppc601|powerpc601)
4426             cpuflags="-mcpu=601"
4427             disable altivec
4428         ;;
4429         603*|ppc603*|powerpc603*)
4430             cpuflags="-mcpu=603"
4431             disable altivec
4432         ;;
4433         604*|ppc604*|powerpc604*)
4434             cpuflags="-mcpu=604"
4435             disable altivec
4436         ;;
4437         g3|75*|ppc75*|powerpc75*)
4438             cpuflags="-mcpu=750"
4439             disable altivec
4440         ;;
4441         g4|745*|ppc745*|powerpc745*)
4442             cpuflags="-mcpu=7450"
4443             disable vsx
4444         ;;
4445         74*|ppc74*|powerpc74*)
4446             cpuflags="-mcpu=7400"
4447             disable vsx
4448         ;;
4449         g5|970|ppc970|powerpc970)
4450             cpuflags="-mcpu=970"
4451             disable vsx
4452         ;;
4453         power[3-6]*)
4454             cpuflags="-mcpu=$cpu"
4455             disable vsx
4456         ;;
4457         power[7-8]*)
4458             cpuflags="-mcpu=$cpu"
4459         ;;
4460         cell)
4461             cpuflags="-mcpu=cell"
4462             enable ldbrx
4463             disable vsx
4464         ;;
4465         e500mc)
4466             cpuflags="-mcpu=e500mc"
4467             disable altivec
4468         ;;
4469         e500v2)
4470             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4471             disable altivec
4472             disable dcbzl
4473         ;;
4474         e500)
4475             cpuflags="-mcpu=8540 -mhard-float"
4476             disable altivec
4477             disable dcbzl
4478         ;;
4479     esac
4480
4481 elif enabled sparc; then
4482
4483     case $cpu in
4484         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4485             cpuflags="-mcpu=$cpu"
4486         ;;
4487         ultrasparc*|niagara[234])
4488             cpuflags="-mcpu=$cpu"
4489         ;;
4490     esac
4491
4492 elif enabled x86; then
4493
4494     case $cpu in
4495         i[345]86|pentium)
4496             cpuflags="-march=$cpu"
4497             disable i686
4498             disable mmx
4499         ;;
4500         # targets that do NOT support nopl and conditional mov (cmov)
4501         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4502             cpuflags="-march=$cpu"
4503             disable i686
4504         ;;
4505         # targets that do support nopl and conditional mov (cmov)
4506         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4507         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4508         |amdfam10|barcelona|b[dt]ver*|znver*)
4509             cpuflags="-march=$cpu"
4510             enable i686
4511             enable fast_cmov
4512         ;;
4513         # targets that do support conditional mov but on which it's slow
4514         pentium4|pentium4m|prescott|nocona)
4515             cpuflags="-march=$cpu"
4516             enable i686
4517             disable fast_cmov
4518         ;;
4519     esac
4520
4521 fi
4522
4523 if [ "$cpu" != generic ]; then
4524     add_cflags  $cpuflags
4525     add_asflags $cpuflags
4526     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4527 fi
4528
4529 # compiler sanity check
4530 check_exec <<EOF
4531 int main(void){ return 0; }
4532 EOF
4533 if test "$?" != 0; then
4534     echo "$cc is unable to create an executable file."
4535     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4536         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4537         echo "Only do this if you know what cross compiling means."
4538     fi
4539     die "C compiler test failed."
4540 fi
4541
4542 add_cppflags -D_ISOC99_SOURCE
4543 add_cxxflags -D__STDC_CONSTANT_MACROS
4544 add_cxxflags -std=c++98
4545 check_cflags -std=c99
4546 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4547 #include <stdlib.h>
4548 EOF
4549 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4550 #include <stdlib.h>
4551 EOF
4552
4553 add_host_cppflags -D_ISOC99_SOURCE
4554 check_host_cflags -std=c99
4555 check_host_cflags -Wall
4556 check_host_cflags -O3
4557
4558 check_64bit(){
4559     arch32=$1
4560     arch64=$2
4561     expr=$3
4562     check_code cc "" "int test[2*($expr) - 1]" &&
4563         subarch=$arch64 || subarch=$arch32
4564 }
4565
4566 case "$arch" in
4567     aarch64|alpha|ia64)
4568         spic=$shared
4569     ;;
4570     mips)
4571         check_64bit mips mips64 '_MIPS_SIM > 1'
4572         spic=$shared
4573     ;;
4574     parisc)
4575         check_64bit parisc parisc64 'sizeof(void *) > 4'
4576         spic=$shared
4577     ;;
4578     ppc)
4579         check_64bit ppc ppc64 'sizeof(void *) > 4'
4580         spic=$shared
4581     ;;
4582     s390)
4583         check_64bit s390 s390x 'sizeof(void *) > 4'
4584         spic=$shared
4585     ;;
4586     sparc)
4587         check_64bit sparc sparc64 'sizeof(void *) > 4'
4588         spic=$shared
4589     ;;
4590     x86)
4591         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4592         # Treat x32 as x64 for now. Note it also needs spic=$shared
4593         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4594             subarch=x86_64
4595         if test "$subarch" = "x86_64"; then
4596             spic=$shared
4597         fi
4598     ;;
4599     ppc)
4600         check_cc <<EOF && subarch="ppc64"
4601         int test[(int)sizeof(char*) - 7];
4602 EOF
4603     ;;
4604 esac
4605
4606 enable $subarch
4607 enabled spic && enable_weak pic
4608
4609 # OS specific
4610 case $target_os in
4611     aix)
4612         SHFLAGS=-shared
4613         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4614         enabled shared && add_ldflags -Wl,-brtl
4615         ;;
4616     android)
4617         disable symver
4618         enable section_data_rel_ro
4619         SLIB_INSTALL_NAME='$(SLIBNAME)'
4620         SLIB_INSTALL_LINKS=
4621         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4622         ;;
4623     haiku)
4624         prefix_default="/boot/common"
4625         network_extralibs="-lnetwork"
4626         host_libs=
4627         ;;
4628     sunos)
4629         SHFLAGS='-shared -Wl,-h,$$(@F)'
4630         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4631         network_extralibs="-lsocket -lnsl"
4632         add_cppflags -D__EXTENSIONS__
4633         # When using suncc to build, the Solaris linker will mark
4634         # an executable with each instruction set encountered by
4635         # the Solaris assembler.  As our libraries contain their own
4636         # guards for processor-specific code, instead suppress
4637         # generation of the HWCAPS ELF section on Solaris x86 only.
4638         enabled_all suncc x86 &&
4639             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4640             add_ldflags -Wl,-M,mapfile
4641         nm_default='nm -P -g'
4642         version_script='-M'
4643         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4644         ;;
4645     netbsd)
4646         disable symver
4647         oss_indev_extralibs="-lossaudio"
4648         oss_outdev_extralibs="-lossaudio"
4649         enabled gcc || check_ldflags -Wl,-zmuldefs
4650         ;;
4651     openbsd|bitrig)
4652         disable symver
4653         SHFLAGS='-shared'
4654         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4655         SLIB_INSTALL_LINKS=
4656         oss_indev_extralibs="-lossaudio"
4657         oss_outdev_extralibs="-lossaudio"
4658         ;;
4659     dragonfly)
4660         disable symver
4661         ;;
4662     freebsd)
4663         ;;
4664     bsd/os)
4665         add_extralibs -lpoll -lgnugetopt
4666         strip="strip -d"
4667         ;;
4668     darwin)
4669         enabled ppc && add_asflags -force_cpusubtype_ALL
4670         install_name_dir_default='$(SHLIBDIR)'
4671         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4672         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4673         strip="${strip} -x"
4674         add_ldflags -Wl,-dynamic,-search_paths_first
4675         SLIBSUF=".dylib"
4676         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4677         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4678         objformat="macho"
4679         enabled x86_64 && objformat="macho64"
4680         enabled_any pic shared x86_64 ||
4681             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4682         check_header dispatch/dispatch.h &&
4683             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4684         ;;
4685     msys*)
4686         die "Native MSYS builds are discouraged, please use the MINGW environment."
4687         ;;
4688     mingw32*|mingw64*)
4689         if test $target_os = "mingw32ce"; then
4690             disable network
4691         else
4692             target_os=mingw32
4693         fi
4694         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4695         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4696         LIBTARGET=i386
4697         if enabled x86_64; then
4698             LIBTARGET="i386:x86-64"
4699         elif enabled arm; then
4700             LIBTARGET=arm-wince
4701         fi
4702         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4703         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4704         shlibdir_default="$bindir_default"
4705         SLIBPREF=""
4706         SLIBSUF=".dll"
4707         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4708         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4709         dlltool="${cross_prefix}dlltool"
4710         if check_cmd lib.exe -list; then
4711             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4712             if enabled x86_64; then
4713                 LIBTARGET=x64
4714             fi
4715         elif check_cmd $dlltool --version; then
4716             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4717         fi
4718         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4719         SLIB_INSTALL_LINKS=
4720         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4721         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4722         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4723         objformat="win32"
4724         ranlib=:
4725         enable dos_paths
4726         check_ldflags -Wl,--nxcompat,--dynamicbase
4727         # Lets work around some stupidity in binutils.
4728         # ld will strip relocations from executables even though we need them
4729         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4730         # however ld then forgets what the entry point should be (oops) so we
4731         # have to manually (re)set it.
4732         if enabled x86_32; then
4733             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4734         elif enabled x86_64; then
4735             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4736             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4737             # Set image base >4GB for extra entropy with HEASLR
4738             add_ldexeflags -Wl,--image-base,0x140000000
4739             append SHFLAGS -Wl,--image-base,0x180000000
4740         fi
4741         ;;
4742     win32|win64)
4743         disable symver
4744         if enabled shared; then
4745             # Link to the import library instead of the normal static library
4746             # for shared libs.
4747             LD_LIB='%.lib'
4748             # Cannot build both shared and static libs with MSVC or icl.
4749             disable static
4750         fi
4751         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4752         shlibdir_default="$bindir_default"
4753         SLIBPREF=""
4754         SLIBSUF=".dll"
4755         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4756         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4757         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4758         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4759         SLIB_INSTALL_LINKS=
4760         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4761         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4762         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4763         objformat="win32"
4764         ranlib=:
4765         enable dos_paths
4766         ;;
4767     cygwin*)
4768         target_os=cygwin
4769         shlibdir_default="$bindir_default"
4770         SLIBPREF="cyg"
4771         SLIBSUF=".dll"
4772         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4773         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4774         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4775         SLIB_INSTALL_LINKS=
4776         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4777         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4778         objformat="win32"
4779         enable dos_paths
4780         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4781         ;;
4782     *-dos|freedos|opendos)
4783         network_extralibs="-lsocket"
4784         objformat="coff"
4785         enable dos_paths
4786         add_cppflags -U__STRICT_ANSI__
4787         ;;
4788     linux)
4789         enable dv1394
4790         enable section_data_rel_ro
4791         ;;
4792     irix*)
4793         target_os=irix
4794         ranlib="echo ignoring ranlib"
4795         ;;
4796     os/2*)
4797         strip="lxlite -CS"
4798         objformat="aout"
4799         add_cppflags -D_GNU_SOURCE
4800         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4801         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4802         LIBSUF="_s.a"
4803         SLIBPREF=""
4804         SLIBSUF=".dll"
4805         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4806         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4807         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4808             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4809             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4810             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4811             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4812         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4813             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4814         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4815         SLIB_INSTALL_LINKS=
4816         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4817         enable dos_paths
4818         enable_weak os2threads
4819         ;;
4820     gnu/kfreebsd)
4821         add_cppflags -D_BSD_SOURCE
4822         ;;
4823     gnu)
4824         ;;
4825     qnx)
4826         add_cppflags -D_QNX_SOURCE
4827         network_extralibs="-lsocket"
4828         ;;
4829     symbian)
4830         SLIBSUF=".dll"
4831         enable dos_paths
4832         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4833         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4834         add_ldflags -Wl,--target1-abs,--no-undefined \
4835                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4836                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4837         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4838                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4839                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4840         ;;
4841     osf1)
4842         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4843         ;;
4844     minix)
4845         ;;
4846     plan9)
4847         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4848                      -D_REENTRANT_SOURCE        \
4849                      -D_RESEARCH_SOURCE         \
4850                      -DFD_SETSIZE=96            \
4851                      -DHAVE_SOCK_OPTS
4852         add_compat strtod.o strtod=avpriv_strtod
4853         network_extralibs='-lbsd'
4854         exeobjs=compat/plan9/main.o
4855         disable ffserver
4856         cp_f='cp'
4857         ;;
4858     none)
4859         ;;
4860     *)
4861         die "Unknown OS '$target_os'."
4862         ;;
4863 esac
4864
4865 # test if creating links works
4866 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4867 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4868 mkdir "$link_dest"
4869 $ln_s "$link_dest" "$link_name"
4870 touch "$link_dest/test_file"
4871 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4872     # create link to source path
4873     [ -e src ] && rm src
4874     $ln_s "$source_path" src
4875     source_link=src
4876 else
4877     # creating directory links doesn't work
4878     # fall back to using the full source path
4879     source_link="$source_path"
4880 fi
4881 # cleanup
4882 rm -r "$link_dest"
4883 rm -r "$link_name"
4884
4885 # determine libc flavour
4886
4887 probe_libc(){
4888     pfx=$1
4889     pfx_no_=${pfx%_}
4890     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4891     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4892         eval ${pfx}libc_type=uclibc
4893         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4894     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4895         eval ${pfx}libc_type=glibc
4896         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4897     # MinGW headers can be installed on Cygwin, so check for newlib first.
4898     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4899         eval ${pfx}libc_type=newlib
4900         add_${pfx}cppflags -U__STRICT_ANSI__
4901     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4902     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4903         eval ${pfx}libc_type=mingw64
4904         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4905             add_compat msvcrt/snprintf.o
4906             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4907         fi
4908         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4909         eval test \$${pfx_no_}cc_type = "gcc" &&
4910             add_${pfx}cppflags -D__printf__=__gnu_printf__
4911     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4912          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4913         eval ${pfx}libc_type=mingw32
4914         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4915             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4916             die "ERROR: MinGW32 runtime version must be >= 3.15."
4917         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4918         eval test \$${pfx_no_}cc_type = "gcc" &&
4919             add_${pfx}cppflags -D__printf__=__gnu_printf__
4920     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4921         eval ${pfx}libc_type=msvcrt
4922         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4923             if [ "$pfx" = host_ ]; then
4924                 add_host_cppflags -Dsnprintf=_snprintf
4925             else
4926                 add_compat strtod.o strtod=avpriv_strtod
4927                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4928                                              _snprintf=avpriv_snprintf  \
4929                                              vsnprintf=avpriv_vsnprintf
4930             fi
4931         fi
4932         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4933         # 0x601 by default unless something else is set by the user.
4934         # This can easily lead to us detecting functions only present
4935         # in such new versions and producing binaries requiring windows 7.0.
4936         # Therefore explicitly set the default to XP unless the user has
4937         # set something else on the command line.
4938         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4939         # family. For these cases, configure is free to use any functions
4940         # found in the SDK headers by default. (Alternatively, we could force
4941         # _WIN32_WINNT to 0x0602 in that case.)
4942         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4943             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4944 #ifdef WINAPI_FAMILY
4945 #include <winapifamily.h>
4946 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4947 #error not desktop
4948 #endif
4949 #endif
4950 EOF
4951     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4952         eval ${pfx}libc_type=klibc
4953     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4954         eval ${pfx}libc_type=bionic
4955     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4956         eval ${pfx}libc_type=solaris
4957         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4958     fi
4959     check_${pfx}cc <<EOF
4960 #include <time.h>
4961 void *v = localtime_r;
4962 EOF
4963 test "$?" != 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
4964 #include <time.h>
4965 void *v = localtime_r;
4966 EOF
4967
4968 }
4969
4970 probe_libc
4971 test -n "$libc_type" && enable libc_$libc_type
4972 probe_libc host_
4973 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4974
4975 case $libc_type in
4976     bionic)
4977         add_compat strtod.o strtod=avpriv_strtod
4978         ;;
4979 esac
4980
4981 # hacks for compiler/libc/os combinations
4982
4983 if enabled_all tms470 libc_glibc; then
4984     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4985     add_cppflags -D__USER_LABEL_PREFIX__=
4986     add_cppflags -D__builtin_memset=memset
4987     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4988     add_cflags   -pds=48    # incompatible redefinition of macro
4989 fi
4990
4991 if enabled_all ccc libc_glibc; then
4992     add_ldflags -Wl,-z,now  # calls to libots crash without this
4993 fi
4994
4995 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4996     add_cppflags '-I\$(SRC_PATH)/compat/float'
4997
4998 esc(){
4999     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5000 }
5001
5002 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5003
5004 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5005
5006 set_default libdir
5007 : ${shlibdir_default:="$libdir"}
5008 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5009
5010 set_default $PATHS_LIST
5011 set_default nm
5012
5013 # we need to build at least one lib type
5014 if ! enabled_any static shared; then
5015     cat <<EOF
5016 At least one library type must be built.
5017 Specify --enable-static to build the static libraries or --enable-shared to
5018 build the shared libraries as well. To only build the shared libraries specify
5019 --disable-static in addition to --enable-shared.
5020 EOF
5021     exit 1
5022 fi
5023
5024 die_license_disabled() {
5025     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5026 }
5027
5028 die_license_disabled_gpl() {
5029     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5030 }
5031
5032 die_license_disabled gpl frei0r
5033 die_license_disabled gpl libcdio
5034 die_license_disabled gpl librubberband
5035 die_license_disabled gpl libsmbclient
5036 die_license_disabled gpl libvidstab
5037 die_license_disabled gpl libx264
5038 die_license_disabled gpl libx265
5039 die_license_disabled gpl libxavs
5040 die_license_disabled gpl libxvid
5041 die_license_disabled gpl x11grab
5042
5043 die_license_disabled nonfree cuda
5044 die_license_disabled nonfree cuvid
5045 die_license_disabled nonfree libfaac
5046 die_license_disabled nonfree libnpp
5047 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5048 enabled gpl && die_license_disabled_gpl nonfree openssl
5049
5050 die_license_disabled version3 gmp
5051 die_license_disabled version3 libopencore_amrnb
5052 die_license_disabled version3 libopencore_amrwb
5053 die_license_disabled version3 libsmbclient
5054 die_license_disabled version3 libvo_amrwbenc
5055
5056 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5057
5058 disabled optimizations || check_cflags -fomit-frame-pointer
5059
5060 enable_weak_pic() {
5061     disabled pic && return
5062     enable pic
5063     add_cppflags -DPIC
5064     case "$target_os" in
5065     mingw*|cygwin*)
5066         ;;
5067     *)
5068         add_cflags -fPIC
5069         ;;
5070     esac
5071     add_asflags  -fPIC
5072 }
5073
5074 enabled pic && enable_weak_pic
5075
5076 check_cc <<EOF || die "Symbol mangling check failed."
5077 int ff_extern;
5078 EOF
5079 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5080 extern_prefix=${sym%%ff_extern*}
5081
5082 check_cc <<EOF && enable_weak inline_asm
5083 void foo(void) { __asm__ volatile ("" ::); }
5084 EOF
5085
5086 _restrict=
5087 for restrict_keyword in restrict __restrict__ __restrict; do
5088     check_cc <<EOF && _restrict=$restrict_keyword && break
5089 void foo(char * $restrict_keyword p);
5090 EOF
5091 done
5092
5093 check_cc <<EOF && enable pragma_deprecated
5094 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5095 EOF
5096
5097 check_cc <<EOF && enable attribute_packed
5098 struct { int x; } __attribute__((packed)) x;
5099 EOF
5100
5101 check_cc <<EOF && enable attribute_may_alias
5102 union { int x; } __attribute__((may_alias)) x;
5103 EOF
5104
5105 check_cc <<EOF || die "endian test failed"
5106 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5107 EOF
5108 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5109
5110 if ! enabled ppc64 || enabled bigendian; then
5111     disable vsx
5112 fi
5113
5114 check_gas() {
5115     log "check_gas using '$as' as AS"
5116     # :vararg is used on aarch64, arm and ppc altivec
5117     check_as <<EOF || return 1
5118 .macro m n, y:vararg=0
5119 \n: .int \y
5120 .endm
5121 m x
5122 EOF
5123     # .altmacro is only used in arm asm
5124     ! enabled arm || check_as <<EOF || return 1
5125 .altmacro
5126 EOF
5127     enable gnu_as
5128     return 0
5129 }
5130
5131 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5132     nogas=:
5133     enabled_any arm aarch64 && nogas=die
5134     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5135     as_noop=-v
5136
5137     case $as_type in
5138         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5139         gcc)  gaspp_as_type=gas ;;
5140         *)    gaspp_as_type=$as_type ;;
5141     esac
5142
5143     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5144
5145     test "${as#*gas-preprocessor.pl}" != "$as" ||
5146     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5147         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5148
5149     if ! check_gas ; then
5150         as=${gas:=$as}
5151         check_gas || \
5152             $nogas "GNU assembler not found, install/update gas-preprocessor"
5153     fi
5154
5155     check_as <<EOF && enable as_func
5156 .func test
5157 .endfunc
5158 EOF
5159 fi
5160
5161 check_inline_asm inline_asm_labels '"1:\n"'
5162
5163 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5164
5165 if enabled aarch64; then
5166     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5167     # internal assembler in clang 3.3 does not support this instruction
5168     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5169     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5170
5171     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5172
5173 elif enabled alpha; then
5174
5175     check_cflags -mieee
5176
5177 elif enabled arm; then
5178
5179     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5180
5181     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5182 float func(float a, float b){ return a+b; }
5183 EOF
5184
5185     enabled thumb && check_cflags -mthumb || check_cflags -marm
5186
5187     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5188         enable vfp_args
5189     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5190         enable vfp_args
5191     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5192         case "${cross_prefix:-$cc}" in
5193             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5194             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5195 __asm__ (".eabi_attribute 28, 1");
5196 int main(void) { return 0; }
5197 EOF
5198         esac
5199         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5200     fi
5201
5202     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5203     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5204     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5205     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5206     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5207     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5208     enabled setend  && check_insn setend  'setend be'
5209
5210     [ $target_os = linux ] || [ $target_os = android ] ||
5211         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5212             $ARCH_EXT_LIST_ARM
5213
5214     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5215
5216     check_as <<EOF && enable as_dn_directive
5217 ra .dn d0.i16
5218 .unreq ra
5219 EOF
5220
5221     # llvm's integrated assembler supports .object_arch from llvm 3.5
5222     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5223 .object_arch armv4
5224 EOF
5225
5226     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5227
5228 elif enabled mips; then
5229
5230     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5231     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5232     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5233
5234     # Enable minimum ISA based on selected options
5235     if enabled mips64; then
5236         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5237         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5238         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5239     else
5240         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5241         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5242         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5243         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5244     fi
5245
5246     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5247     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5248     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5249     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5250     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5251
5252 elif enabled parisc; then
5253
5254     if enabled gcc; then
5255         case $($cc -dumpversion) in
5256             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5257         esac
5258     fi
5259
5260 elif enabled ppc; then
5261
5262     enable local_aligned_8 local_aligned_16 local_aligned_32
5263
5264     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5265     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5266     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5267     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5268
5269     # AltiVec flags: The FSF version of GCC differs from the Apple version
5270     if enabled altivec; then
5271         check_cflags -maltivec -mabi=altivec &&
5272         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5273         check_cflags -faltivec
5274
5275         # check if our compiler supports Motorola AltiVec C API
5276         check_cc <<EOF || disable altivec
5277 $inc_altivec_h
5278 int main(void) {
5279     vector signed int v1 = (vector signed int) { 0 };
5280     vector signed int v2 = (vector signed int) { 1 };
5281     v1 = vec_add(v1, v2);
5282     return 0;
5283 }
5284 EOF
5285
5286         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5287     fi
5288
5289     if enabled vsx; then
5290         check_cflags -mvsx &&
5291         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5292     fi
5293
5294     if enabled power8; then
5295         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5296     fi
5297
5298 elif enabled x86; then
5299
5300     check_builtin rdtsc    intrin.h   "__rdtsc()"
5301     check_builtin mm_empty mmintrin.h "_mm_empty()"
5302
5303     enable local_aligned_8 local_aligned_16 local_aligned_32
5304
5305     # check whether EBP is available on x86
5306     # As 'i' is stored on the stack, this program will crash
5307     # if the base pointer is used to access it because the
5308     # base pointer is cleared in the inline assembly code.
5309     check_exec_crash <<EOF && enable ebp_available
5310 volatile int i=0;
5311 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5312 return i;
5313 EOF
5314
5315     # check whether EBX is available on x86
5316     check_inline_asm ebx_available '""::"b"(0)' &&
5317         check_inline_asm ebx_available '"":::"%ebx"'
5318
5319     # check whether xmm clobbers are supported
5320     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5321
5322     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5323         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5324
5325     # check whether binutils is new enough to compile SSSE3/MMXEXT
5326     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5327     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5328
5329     if ! disabled_any asm mmx yasm; then
5330         if check_cmd $yasmexe --version; then
5331             enabled x86_64 && yasm_extra="-m amd64"
5332             yasm_debug="-g dwarf2"
5333         elif check_cmd nasm -v; then
5334             yasmexe=nasm
5335             yasm_debug="-g -F dwarf"
5336             if enabled x86_64; then
5337                 case "$objformat" in
5338                     elf)   objformat=elf64 ;;
5339                     win32) objformat=win64 ;;
5340                 esac
5341             fi
5342         fi
5343
5344         YASMFLAGS="-f $objformat $yasm_extra"
5345         enabled pic               && append YASMFLAGS "-DPIC"
5346         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5347         case "$objformat" in
5348             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5349         esac
5350
5351         check_yasm "movbe ecx, [5]" && enable yasm ||
5352             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5353         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5354         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5355         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5356         check_yasm "CPU amdnop" || disable cpunop
5357     fi
5358
5359     case "$cpu" in
5360         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5361             disable fast_clz
5362         ;;
5363     esac
5364
5365 fi
5366
5367 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5368
5369 check_ldflags -Wl,--as-needed
5370 check_ldflags -Wl,-z,noexecstack
5371
5372 if check_func dlopen; then
5373     ldl=
5374 elif check_func dlopen -ldl; then
5375     ldl=-ldl
5376 fi
5377
5378 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5379 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5380 frei0r_filter_extralibs='$ldl'
5381 frei0r_src_filter_extralibs='$ldl'
5382 ladspa_filter_extralibs='$ldl'
5383 nvenc_encoder_extralibs='$ldl'
5384 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5385 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5386
5387 if ! disabled network; then
5388     check_func getaddrinfo $network_extralibs
5389     check_func inet_aton $network_extralibs
5390
5391     check_type netdb.h "struct addrinfo"
5392     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5393     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5394     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5395     check_type poll.h "struct pollfd"
5396     check_type netinet/sctp.h "struct sctp_event_subscribe"
5397     check_struct "sys/socket.h" "struct msghdr" msg_flags
5398     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5399     check_type netinet/in.h "struct sockaddr_in6"
5400     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5401     check_type "sys/types.h sys/socket.h" socklen_t
5402
5403     # Prefer arpa/inet.h over winsock2
5404     if check_header arpa/inet.h ; then
5405         check_func closesocket
5406     elif check_header winsock2.h ; then
5407         check_func_headers winsock2.h closesocket -lws2 &&
5408             network_extralibs="-lws2" ||
5409         { check_func_headers winsock2.h closesocket -lws2_32 &&
5410             network_extralibs="-lws2_32"; } || disable winsock2_h network
5411         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5412
5413         check_type ws2tcpip.h socklen_t
5414         check_type ws2tcpip.h "struct addrinfo"
5415         check_type ws2tcpip.h "struct group_source_req"
5416         check_type ws2tcpip.h "struct ip_mreq_source"
5417         check_type ws2tcpip.h "struct ipv6_mreq"
5418         check_type winsock2.h "struct pollfd"
5419         check_struct winsock2.h "struct sockaddr" sa_len
5420         check_type ws2tcpip.h "struct sockaddr_in6"
5421         check_type ws2tcpip.h "struct sockaddr_storage"
5422     else
5423         disable network
5424     fi
5425 fi
5426
5427 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5428 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5429 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5430 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5431 check_builtin sarestart signal.h "SA_RESTART"
5432 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5433 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5434 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5435 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5436 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5437
5438 case "$custom_allocator" in
5439     jemalloc)
5440         # jemalloc by default does not use a prefix
5441         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5442     ;;
5443     tcmalloc)
5444         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5445         malloc_prefix=tc_
5446     ;;
5447 esac
5448
5449 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5450 check_func  ${malloc_prefix}memalign            && enable memalign
5451 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5452
5453 check_func  access
5454 check_func  arc4random
5455 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5456 check_func  fcntl
5457 check_func  fork
5458 check_func  gethrtime
5459 check_func  getopt
5460 check_func  getrusage
5461 check_func  gettimeofday
5462 check_func  isatty
5463 check_func  mach_absolute_time
5464 check_func  mkstemp
5465 check_func  mmap
5466 check_func  mprotect
5467 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5468 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5469 check_func  sched_getaffinity
5470 check_func  setrlimit
5471 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5472 check_func  strerror_r
5473 check_func  sysconf
5474 check_func  sysctl
5475 check_func  usleep
5476
5477 check_func_headers conio.h kbhit
5478 check_func_headers io.h setmode
5479 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5480 check_func_headers stdlib.h getenv
5481 check_func_headers sys/stat.h lstat
5482
5483 check_func_headers windows.h CoTaskMemFree -lole32
5484 check_func_headers windows.h GetProcessAffinityMask
5485 check_func_headers windows.h GetProcessTimes
5486 check_func_headers windows.h GetSystemTimeAsFileTime
5487 check_func_headers windows.h MapViewOfFile
5488 check_func_headers windows.h PeekNamedPipe
5489 check_func_headers windows.h SetConsoleTextAttribute
5490 check_func_headers windows.h SetConsoleCtrlHandler
5491 check_func_headers windows.h Sleep
5492 check_func_headers windows.h VirtualAlloc
5493 check_struct windows.h "CONDITION_VARIABLE" Ptr
5494 check_func_headers glob.h glob
5495 enabled xlib &&
5496     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5497
5498 check_header AudioToolbox/AudioToolbox.h
5499 check_header direct.h
5500 check_header dirent.h
5501 check_header dlfcn.h
5502 check_header d3d11.h
5503 check_header dxva.h
5504 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5505 check_header io.h
5506 check_header libcrystalhd/libcrystalhd_if.h
5507 check_header mach/mach_time.h
5508 check_header malloc.h
5509 check_header net/udplite.h
5510 check_header poll.h
5511 check_header sys/mman.h
5512 check_header sys/param.h
5513 check_header sys/resource.h
5514 check_header sys/select.h
5515 check_header sys/time.h
5516 check_header sys/un.h
5517 check_header termios.h
5518 check_header unistd.h
5519 check_header valgrind/valgrind.h
5520 check_header vdpau/vdpau.h
5521 check_header vdpau/vdpau_x11.h
5522 check_header VideoDecodeAcceleration/VDADecoder.h
5523 check_header VideoToolbox/VideoToolbox.h
5524 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5525 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5526 check_header windows.h
5527 check_header X11/extensions/XvMClib.h
5528 check_header asm/types.h
5529
5530 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5531 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5532 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5533 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5534
5535 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5536
5537 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5538 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5539 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5540 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5541 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5542
5543 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5544 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5545 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5546 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5547 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5548 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5549
5550 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5551
5552 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
5553 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
5554 check_type "cuviddec.h" "CUVIDVC1PICPARAMS"
5555 check_type "cuviddec.h" "CUVIDVP9PICPARAMS"
5556
5557 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5558
5559 if ! disabled w32threads && ! enabled pthreads; then
5560     check_func_headers "windows.h process.h" _beginthreadex &&
5561         enable w32threads || disable w32threads
5562     if ! enabled w32threads && enabled winrt; then
5563         check_func_headers "windows.h" CreateThread &&
5564             enable w32threads || disable w32threads
5565     fi
5566 fi
5567
5568 # check for some common methods of building with pthread support
5569 # do this before the optional library checks as some of them require pthreads
5570 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5571     enable pthreads
5572     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5573         add_cflags -pthread
5574         add_extralibs -pthread
5575     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5576         add_cflags -pthreads
5577         add_extralibs -pthreads
5578     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5579         add_cflags -ldl -pthread
5580         add_extralibs -ldl -pthread
5581     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5582         add_extralibs -lpthreadGC2
5583     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5584         :
5585     elif ! check_func pthread_join && ! check_func pthread_create; then
5586         disable pthreads
5587     fi
5588     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5589 fi
5590
5591
5592 if enabled pthreads; then
5593   check_func pthread_cancel
5594 fi
5595
5596 enabled pthreads &&
5597     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5598
5599 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5600 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5601 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5602
5603 check_lib math.h sin -lm && LIBM="-lm"
5604 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5605
5606 atan2f_args=2
5607 copysign_args=2
5608 hypot_args=2
5609 ldexpf_args=2
5610 powf_args=2
5611
5612 for func in $MATH_FUNCS; do
5613     eval check_mathfunc $func \${${func}_args:-1}
5614 done
5615
5616 for func in $COMPLEX_FUNCS; do
5617     eval check_complexfunc $func \${${func}_args:-1}
5618 done
5619
5620 # Enable CUVID by default if CUDA is enabled
5621 if enabled cuda && ! disabled cuvid; then
5622     enable cuvid
5623 fi
5624
5625 # these are off by default, so fail if requested and not available
5626 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5627 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5628                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5629 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5630                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5631                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5632 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
5633                                die "ERROR: CUDA not found"; }
5634 enabled cuvid             && { check_lib cuviddec.h cuvidCreateDecoder -lnvcuvid ||
5635                                die "ERROR: CUVID not found"; } &&
5636                              { enabled cuda ||
5637                                die "ERROR: CUVID requires CUDA"; }
5638 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5639 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5640 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5641 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5642                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5643 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5644 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5645 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5646 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5647                                check_lib2 "dlfcn.h" dlopen -ldl; }
5648 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5649 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5650 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5651 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5652 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5653 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5654                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5655                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5656 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5657 enabled libebur128        && require ebur128 ebur128.h ebur128_relative_threshold -lebur128
5658 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5659 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5660                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5661                                  warn "using libfdk without pkg-config"; } }
5662 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"
5663 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5664 enabled fontconfig        && enable libfontconfig
5665 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5666 enabled libfreetype       && require_libfreetype
5667 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5668 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5669 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5670                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5671                                done || die "ERROR: libgsm not found"; }
5672 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5673 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5674 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5675 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5676 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5677 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5678 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5679 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5680 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5681 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5682                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5683                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5684                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5685 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5686 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5687                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5688                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5689                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5690                                die "ERROR: libopenjpeg not found"; }
5691 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5692 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5693 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5694 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5695 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5696 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5697 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5698 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5699                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5700 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5701 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5702 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5703 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5704 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5705 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5706 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5707                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5708                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5709 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5710 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5711 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5712 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5713
5714 enabled libvpx            && {
5715     enabled libvpx_vp8_decoder && {
5716         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5717             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5718                 die "ERROR: libvpx decoder version must be >=0.9.1";
5719     }
5720     enabled libvpx_vp8_encoder && {
5721         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5722             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5723                 die "ERROR: libvpx encoder version must be >=0.9.7";
5724     }
5725     enabled libvpx_vp9_decoder && {
5726         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5727             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5728                 disable libvpx_vp9_decoder;
5729     }
5730     enabled libvpx_vp9_encoder && {
5731         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5732             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5733                 disable libvpx_vp9_encoder;
5734     }
5735     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5736         die "libvpx enabled but no supported decoders found"
5737     fi
5738 }
5739
5740 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5741 enabled libwebp           && {
5742     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5743     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5744 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5745                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5746                                  warn "using libx264 without pkg-config"; } } &&
5747                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5748                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5749                              { check_cpp_condition x264.h "X264_MPEG2" &&
5750                                enable libx262; }
5751 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5752                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5753                                die "ERROR: libx265 version must be >= 68."; }
5754 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5755 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5756 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5757 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5758 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5759                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5760                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5761 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5762 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5763                                 { ! enabled cross_compile && {
5764                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5765                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5766                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5767                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5768                                die "ERROR: mmal not found"; }
5769 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5770
5771 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5772 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5773                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
5774                                die "ERROR: NVENC API version 5 or older is not supported"; } &&
5775                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5776 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5777                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5778                                die "ERROR: openal not found"; } &&
5779                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5780                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5781 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5782                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5783                                die "ERROR: opencl not found"; } &&
5784                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5785                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5786                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5787 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5788                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5789                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5790                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5791                                die "ERROR: opengl not found."
5792                              }
5793 enabled omx_rpi && enable omx
5794 enabled omx               && { check_header OMX_Core.h ||
5795                                 { ! enabled cross_compile && enabled omx_rpi && {
5796                                     add_cflags -isystem/opt/vc/include/IL ; }
5797                                 check_header OMX_Core.h ; } ||
5798                                die "ERROR: OpenMAX IL headers not found"; }
5799 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5800                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5801                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5802                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5803                                die "ERROR: openssl not found"; }
5804 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5805
5806 # libdc1394 check
5807 if enabled libdc1394; then
5808     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5809         enable libdc1394_2; } ||
5810     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5811         enable libdc1394_1; } ||
5812     die "ERROR: No version of libdc1394 found "
5813 fi
5814
5815 if enabled gcrypt; then
5816     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5817     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5818         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5819         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5820         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5821             die "ERROR: gcrypt not found"
5822         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5823     else
5824         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5825     fi
5826 fi
5827
5828 if ! disabled sdl; then
5829     SDL_CONFIG="${cross_prefix}sdl-config"
5830     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5831         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5832         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5833         enable sdl
5834     else
5835         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5836             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5837             sdl_libs=$("${SDL_CONFIG}" --libs)
5838             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5839             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5840             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5841             enable sdl
5842         elif enabled sdl ; then
5843             die "ERROR: SDL not found"
5844         else
5845             disable sdl
5846         fi
5847     fi
5848     if test $target_os = "mingw32"; then
5849         sdl_libs="$sdl_libs -mconsole"
5850     fi
5851 fi
5852 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5853
5854 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5855     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5856     enable securetransport; }
5857
5858 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5859                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5860
5861 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5862 enabled makeinfo \
5863     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5864     && enable makeinfo_html || disable makeinfo_html
5865 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5866 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5867 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5868 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5869
5870 check_header linux/fb.h
5871 check_header linux/videodev.h
5872 check_header linux/videodev2.h
5873 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5874
5875 check_header sys/videoio.h
5876 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5877
5878 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5879 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5880 # w32api 3.12 had it defined wrong
5881 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5882
5883 check_type "dshow.h" IBaseFilter
5884
5885 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5886 { check_header dev/bktr/ioctl_meteor.h &&
5887   check_header dev/bktr/ioctl_bt848.h; } ||
5888 { check_header machine/ioctl_meteor.h &&
5889   check_header machine/ioctl_bt848.h; } ||
5890 { check_header dev/video/meteor/ioctl_meteor.h &&
5891   check_header dev/video/bktr/ioctl_bt848.h; } ||
5892 check_header dev/ic/bt8xx.h
5893
5894 check_header sndio.h
5895 if check_struct sys/soundcard.h audio_buf_info bytes; then
5896     enable_safe sys/soundcard.h
5897 else
5898     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5899     #include <sys/soundcard.h>
5900     audio_buf_info abc;
5901 EOF
5902 fi
5903 check_header soundcard.h
5904
5905 enabled_any alsa_indev alsa_outdev &&
5906     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5907
5908 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5909     check_func jack_port_get_latency_range -ljack
5910
5911 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5912
5913 if enabled libcdio; then
5914     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5915     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5916     die "ERROR: No usable libcdio/cdparanoia found"
5917 fi
5918
5919 enabled xlib &&
5920     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5921
5922 if ! disabled libxcb; then
5923     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5924         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5925     } && disable x11grab && enable libxcb
5926
5927 if enabled libxcb; then
5928     disabled libxcb_shm || {
5929         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5930             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5931         } && check_header sys/shm.h && enable libxcb_shm; }
5932
5933     disabled libxcb_xfixes || {
5934         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5935             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5936         } && enable libxcb_xfixes; }
5937
5938     disabled libxcb_shape || {
5939         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5940             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5941         } && enable libxcb_shape; }
5942
5943     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5944     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5945 fi
5946 fi
5947
5948 if enabled x11grab; then
5949     enabled xlib || die "ERROR: Xlib not found"
5950     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5951     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5952 fi
5953
5954 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5955
5956 enabled dxva2api_h &&
5957     check_cc <<EOF && enable dxva2api_cobj
5958 #define _WIN32_WINNT 0x0600
5959 #define COBJMACROS
5960 #include <windows.h>
5961 #include <d3d9.h>
5962 #include <dxva2api.h>
5963 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5964 EOF
5965
5966 enabled vaapi &&
5967     check_lib va/va.h vaInitialize -lva ||
5968     disable vaapi
5969
5970 enabled vaapi &&
5971     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
5972     disable vaapi
5973
5974 if enabled vaapi ; then
5975     enabled xlib &&
5976     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5977     enable vaapi_x11
5978
5979     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
5980     enable vaapi_drm
5981 fi
5982
5983 enabled vdpau &&
5984     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5985     disable vdpau
5986
5987 enabled vdpau && enabled xlib &&
5988     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5989     enable vdpau_x11
5990
5991 # Funny iconv installations are not unusual, so check it after all flags have been set
5992 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5993
5994 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5995
5996 # add some useful compiler flags if supported
5997 check_cflags -Wdeclaration-after-statement
5998 check_cflags -Wall
5999 check_cflags -Wdisabled-optimization
6000 check_cflags -Wpointer-arith
6001 check_cflags -Wredundant-decls
6002 check_cflags -Wwrite-strings
6003 check_cflags -Wtype-limits
6004 check_cflags -Wundef
6005 check_cflags -Wmissing-prototypes
6006 check_cflags -Wno-pointer-to-int-cast
6007 check_cflags -Wstrict-prototypes
6008 check_cflags -Wempty-body
6009 enabled extra_warnings && check_cflags -Winline
6010 enabled extra_warnings && check_cflags -Wcast-qual
6011
6012 check_disable_warning(){
6013     warning_flag=-W${1#-Wno-}
6014     test_cflags $warning_flag && add_cflags $1
6015 }
6016
6017 check_disable_warning -Wno-parentheses
6018 check_disable_warning -Wno-switch
6019 check_disable_warning -Wno-format-zero-length
6020 check_disable_warning -Wno-pointer-sign
6021 check_disable_warning -Wno-unused-const-variable
6022
6023 # add some linker flags
6024 check_ldflags -Wl,--warn-common
6025 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6026 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6027 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6028 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6029
6030 # add some strip flags
6031 # -wN '..@*' is more selective than -x, but not available everywhere.
6032 check_stripflags -wN \'..@*\' || check_stripflags -x
6033
6034 enabled neon_clobber_test &&
6035     check_ldflags -Wl,--wrap,avcodec_open2              \
6036                   -Wl,--wrap,avcodec_decode_audio4      \
6037                   -Wl,--wrap,avcodec_decode_video2      \
6038                   -Wl,--wrap,avcodec_decode_subtitle2   \
6039                   -Wl,--wrap,avcodec_encode_audio2      \
6040                   -Wl,--wrap,avcodec_encode_video2      \
6041                   -Wl,--wrap,avcodec_send_packet        \
6042                   -Wl,--wrap,avcodec_receive_frame      \
6043                   -Wl,--wrap,avcodec_encode_subtitle    \
6044                   -Wl,--wrap,swr_convert                \
6045                   -Wl,--wrap,avresample_convert ||
6046     disable neon_clobber_test
6047
6048 enabled xmm_clobber_test &&
6049     check_ldflags -Wl,--wrap,avcodec_open2              \
6050                   -Wl,--wrap,avcodec_decode_audio4      \
6051                   -Wl,--wrap,avcodec_decode_video2      \
6052                   -Wl,--wrap,avcodec_decode_subtitle2   \
6053                   -Wl,--wrap,avcodec_encode_audio2      \
6054                   -Wl,--wrap,avcodec_encode_video2      \
6055                   -Wl,--wrap,avcodec_encode_subtitle    \
6056                   -Wl,--wrap,avcodec_send_packet        \
6057                   -Wl,--wrap,avcodec_receive_frame      \
6058                   -Wl,--wrap,swr_convert                \
6059                   -Wl,--wrap,avresample_convert         \
6060                   -Wl,--wrap,sws_scale ||
6061     disable xmm_clobber_test
6062
6063 check_ld "cc" <<EOF && enable proper_dce
6064 extern const int array[512];
6065 static inline int func(void) { return array[0]; }
6066 int main(void) { return 0; }
6067 EOF
6068
6069 if enabled proper_dce; then
6070     echo "X { local: *; };" > $TMPV
6071     if test_ldflags -Wl,${version_script},$TMPV; then
6072         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6073         check_cc <<EOF && enable symver_asm_label
6074 void ff_foo(void) __asm__ ("av_foo@VERSION");
6075 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6076 EOF
6077         check_cc <<EOF && enable symver_gnu_asm
6078 __asm__(".symver ff_foo,av_foo@VERSION");
6079 void ff_foo(void) {}
6080 EOF
6081     fi
6082 fi
6083
6084 if [ -z "$optflags" ]; then
6085     if enabled small; then
6086         optflags=$cflags_size
6087     elif enabled optimizations; then
6088         optflags=$cflags_speed
6089     else
6090         optflags=$cflags_noopt
6091     fi
6092 fi
6093
6094 check_optflags(){
6095     check_cflags "$@"
6096     enabled lto && check_ldflags "$@"
6097 }
6098
6099
6100 if enabled lto; then
6101     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6102     check_cflags  -flto
6103     check_ldflags -flto $cpuflags
6104     disable inline_asm_direct_symbol_refs
6105 fi
6106
6107 check_optflags $optflags
6108 check_optflags -fno-math-errno
6109 check_optflags -fno-signed-zeros
6110
6111 enabled ftrapv && check_cflags -ftrapv
6112
6113 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6114 int x;
6115 EOF
6116
6117
6118 if enabled icc; then
6119     # Just warnings, no remarks
6120     check_cflags -w1
6121     # -wd: Disable following warnings
6122     # 144, 167, 556: -Wno-pointer-sign
6123     # 188: enumerated type mixed with another type
6124     # 1292: attribute "foo" ignored
6125     # 1419: external declaration in primary source file
6126     # 10006: ignoring unknown option -fno-signed-zeros
6127     # 10148: ignoring unknown option -Wno-parentheses
6128     # 10156: ignoring option '-W'; no argument required
6129     # 13200: No EMMS instruction before call to function
6130     # 13203: No EMMS instruction before return from function
6131     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6132     # 11030: Warning unknown option --as-needed
6133     # 10156: ignoring option '-export'; no argument required
6134     check_ldflags -wd10156,11030
6135     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6136     enable ebp_available
6137     # The test above does not test linking
6138     enabled lto && disable symver_asm_label
6139     if enabled x86_32; then
6140         icc_version=$($cc -dumpversion)
6141         test ${icc_version%%.*} -ge 11 &&
6142             check_cflags -falign-stack=maintain-16-byte ||
6143             disable aligned_stack
6144     fi
6145 elif enabled ccc; then
6146     # disable some annoying warnings
6147     add_cflags -msg_disable bitnotint
6148     add_cflags -msg_disable mixfuncvoid
6149     add_cflags -msg_disable nonstandcast
6150     add_cflags -msg_disable unsupieee
6151 elif enabled gcc; then
6152     check_optflags -fno-tree-vectorize
6153     check_cflags -Werror=format-security
6154     check_cflags -Werror=implicit-function-declaration
6155     check_cflags -Werror=missing-prototypes
6156     check_cflags -Werror=return-type
6157     check_cflags -Werror=vla
6158     check_cflags -Wformat
6159     check_cflags -fdiagnostics-color=auto
6160     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6161 elif enabled llvm_gcc; then
6162     check_cflags -mllvm -stack-alignment=16
6163 elif enabled clang; then
6164     check_cflags -mllvm -stack-alignment=16
6165     check_cflags -Qunused-arguments
6166     check_cflags -Werror=implicit-function-declaration
6167     check_cflags -Werror=missing-prototypes
6168     check_cflags -Werror=return-type
6169 elif enabled cparser; then
6170     add_cflags -Wno-missing-variable-declarations
6171     add_cflags -Wno-empty-statement
6172 elif enabled armcc; then
6173     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6174     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6175     # 2523: use of inline assembly is deprecated
6176     add_cflags -W${armcc_opt},--diag_suppress=2523
6177     add_cflags -W${armcc_opt},--diag_suppress=1207
6178     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6179     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6180     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6181     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6182 elif enabled tms470; then
6183     add_cflags -pds=824 -pds=837
6184     disable inline_asm
6185 elif enabled pathscale; then
6186     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6187 elif enabled_any msvc icl; then
6188     enabled x86_32 && disable aligned_stack
6189     enabled_all x86_32 debug && add_cflags -Oy-
6190     enabled debug && add_ldflags -debug
6191     enable pragma_deprecated
6192     if enabled icl; then
6193         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6194         # (correctly) on icl 13.x.
6195         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6196             add_cflags -Qansi-alias
6197         # Some inline asm is not compilable in debug
6198         if enabled debug; then
6199             disable ebp_available
6200             disable ebx_available
6201         fi
6202     fi
6203     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6204     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6205     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6206     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6207     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6208     # MSVC 2013 and newer can handle it fine.
6209     # If this declspec fails, force including stdlib.h before the restrict redefinition
6210     # happens in config.h.
6211     if [ $_restrict != restrict ]; then
6212         check_cc <<EOF || add_cflags -FIstdlib.h
6213 __declspec($_restrict) void* foo(int);
6214 EOF
6215     fi
6216     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6217     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6218     # this flag should be re-checked on newer compiler releases and put under a
6219     # version check once its fixed
6220     check_cflags -d2SSAOptimizer-
6221 fi
6222
6223 for pfx in "" host_; do
6224     varname=${pfx%_}cc_type
6225     eval "type=\$$varname"
6226     if [ $type = "msvc" ]; then
6227         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6228 static inline int foo(int a) { return a; }
6229 EOF
6230     fi
6231 done
6232
6233 case $as_type in
6234     clang)
6235         add_asflags -Qunused-arguments
6236     ;;
6237 esac
6238
6239 case $ld_type in
6240     clang)
6241         check_ldflags -Qunused-arguments
6242     ;;
6243 esac
6244
6245 case $target_os in
6246     osf1)
6247         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6248     ;;
6249     plan9)
6250         add_cppflags -Dmain=plan9_main
6251     ;;
6252 esac
6253
6254 enable frame_thread_encoder
6255
6256 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6257
6258 check_deps $CONFIG_LIST       \
6259            $CONFIG_EXTRA      \
6260            $HAVE_LIST         \
6261            $ALL_COMPONENTS    \
6262
6263 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"
6264
6265
6266 if test $target_os = "haiku"; then
6267     disable memalign
6268     disable posix_memalign
6269 fi
6270
6271 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6272     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6273     enable dxva2_lib
6274
6275 ! enabled_any memalign posix_memalign aligned_malloc &&
6276     enabled simd_align_16 && enable memalign_hack
6277
6278 # add_dep lib dep
6279 # -> enable ${lib}_deps_${dep}
6280 # -> add $dep to ${lib}_deps only once
6281 add_dep() {
6282     lib=$1
6283     dep=$2
6284     enabled "${lib}_deps_${dep}" && return 0
6285     enable  "${lib}_deps_${dep}"
6286     prepend "${lib}_deps" $dep
6287 }
6288
6289 # merge deps lib components
6290 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6291 merge_deps() {
6292     lib=$1
6293     shift
6294     for comp in $*; do
6295         enabled $comp || continue
6296         eval "dep=\"\$${comp}_deps\""
6297         for d in $dep; do
6298             add_dep $lib $d
6299         done
6300     done
6301 }
6302
6303 merge_deps libavfilter $FILTER_LIST
6304
6305 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6306
6307 for thread in $THREADS_LIST; do
6308     if enabled $thread; then
6309         test -n "$thread_type" &&
6310             die "ERROR: Only one thread type must be selected." ||
6311             thread_type="$thread"
6312     fi
6313 done
6314
6315 enabled zlib && add_cppflags -DZLIB_CONST
6316
6317 # conditional library dependencies, in linking order
6318 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6319 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6320 enabled aresample_filter    && prepend avfilter_deps "swresample"
6321 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6322 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6323 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6324 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6325 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6326 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6327 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6328 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6329 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6330 enabled pan_filter          && prepend avfilter_deps "swresample"
6331 enabled pp_filter           && prepend avfilter_deps "postproc"
6332 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6333 enabled resample_filter && prepend avfilter_deps "avresample"
6334 enabled sab_filter          && prepend avfilter_deps "swscale"
6335 enabled scale_filter    && prepend avfilter_deps "swscale"
6336 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6337 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6338 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6339 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6340 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6341 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6342 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6343 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6344 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6345
6346 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6347
6348 enabled opus_decoder    && prepend avcodec_deps "swresample"
6349
6350 expand_deps(){
6351     lib_deps=${1}_deps
6352     eval "deps=\$$lib_deps"
6353     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6354     unique $lib_deps
6355 }
6356
6357 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6358 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6359
6360 map 'expand_deps $v' $LIBRARY_LIST
6361
6362 echo "install prefix            $prefix"
6363 echo "source path               $source_path"
6364 echo "C compiler                $cc"
6365 echo "C library                 $libc_type"
6366 if test "$host_cc" != "$cc"; then
6367     echo "host C compiler           $host_cc"
6368     echo "host C library            $host_libc_type"
6369 fi
6370 echo "ARCH                      $arch ($cpu)"
6371 if test "$build_suffix" != ""; then
6372     echo "build suffix              $build_suffix"
6373 fi
6374 if test "$progs_suffix" != ""; then
6375     echo "progs suffix              $progs_suffix"
6376 fi
6377 if test "$extra_version" != ""; then
6378     echo "version string suffix     $extra_version"
6379 fi
6380 echo "big-endian                ${bigendian-no}"
6381 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6382 if enabled x86; then
6383     echo "${yasmexe}                      ${yasm-no}"
6384     echo "MMX enabled               ${mmx-no}"
6385     echo "MMXEXT enabled            ${mmxext-no}"
6386     echo "3DNow! enabled            ${amd3dnow-no}"
6387     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6388     echo "SSE enabled               ${sse-no}"
6389     echo "SSSE3 enabled             ${ssse3-no}"
6390     echo "AESNI enabled             ${aesni-no}"
6391     echo "AVX enabled               ${avx-no}"
6392     echo "XOP enabled               ${xop-no}"
6393     echo "FMA3 enabled              ${fma3-no}"
6394     echo "FMA4 enabled              ${fma4-no}"
6395     echo "i686 features enabled     ${i686-no}"
6396     echo "CMOV is fast              ${fast_cmov-no}"
6397     echo "EBX available             ${ebx_available-no}"
6398     echo "EBP available             ${ebp_available-no}"
6399 fi
6400 if enabled aarch64; then
6401     echo "NEON enabled              ${neon-no}"
6402     echo "VFP enabled               ${vfp-no}"
6403 fi
6404 if enabled arm; then
6405     echo "ARMv5TE enabled           ${armv5te-no}"
6406     echo "ARMv6 enabled             ${armv6-no}"
6407     echo "ARMv6T2 enabled           ${armv6t2-no}"
6408     echo "VFP enabled               ${vfp-no}"
6409     echo "NEON enabled              ${neon-no}"
6410     echo "THUMB enabled             ${thumb-no}"
6411 fi
6412 if enabled mips; then
6413     echo "MIPS FPU enabled          ${mipsfpu-no}"
6414     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6415     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6416     echo "MIPS MSA enabled          ${msa-no}"
6417     echo "LOONGSON MMI enabled      ${mmi-no}"
6418 fi
6419 if enabled ppc; then
6420     echo "AltiVec enabled           ${altivec-no}"
6421     echo "VSX enabled               ${vsx-no}"
6422     echo "POWER8 enabled            ${power8-no}"
6423     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6424     echo "dcbzl available           ${dcbzl-no}"
6425 fi
6426 echo "debug symbols             ${debug-no}"
6427 echo "strip symbols             ${stripping-no}"
6428 echo "optimize for size         ${small-no}"
6429 echo "optimizations             ${optimizations-no}"
6430 echo "static                    ${static-no}"
6431 echo "shared                    ${shared-no}"
6432 echo "postprocessing support    ${postproc-no}"
6433 echo "new filter support        ${avfilter-no}"
6434 echo "network support           ${network-no}"
6435 echo "threading support         ${thread_type-no}"
6436 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6437 echo "SDL support               ${sdl-no}"
6438 echo "opencl enabled            ${opencl-no}"
6439 echo "JNI support               ${jni-no}"
6440 echo "texi2html enabled         ${texi2html-no}"
6441 echo "perl enabled              ${perl-no}"
6442 echo "pod2man enabled           ${pod2man-no}"
6443 echo "makeinfo enabled          ${makeinfo-no}"
6444 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6445 test -n "$random_seed" &&
6446     echo "random seed               ${random_seed}"
6447 echo
6448
6449 echo "Enabled programs:"
6450 print_enabled '' $PROGRAM_LIST | print_in_columns
6451 echo
6452
6453 echo "External libraries:"
6454 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6455 echo
6456
6457 echo "External libraries providing hardware acceleration:"
6458 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6459 echo
6460
6461 echo "Libraries:"
6462 print_enabled '' $LIBRARY_LIST | print_in_columns
6463 echo
6464
6465 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6466     echo "Enabled ${type}s:"
6467     eval list=\$$(toupper $type)_LIST
6468     print_enabled '_*' $list | print_in_columns
6469     echo
6470 done
6471
6472 license="LGPL version 2.1 or later"
6473 if enabled nonfree; then
6474     license="nonfree and unredistributable"
6475 elif enabled gplv3; then
6476     license="GPL version 3 or later"
6477 elif enabled lgplv3; then
6478     license="LGPL version 3 or later"
6479 elif enabled gpl; then
6480     license="GPL version 2 or later"
6481 fi
6482
6483 echo "License: $license"
6484
6485 echo "Creating config.mak, config.h, and doc/config.texi..."
6486
6487 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6488
6489 enabled stripping || strip="echo skipping strip"
6490
6491 config_files="$TMPH config.mak doc/config.texi"
6492
6493 cat > config.mak <<EOF
6494 # Automatically generated by configure - do not modify!
6495 ifndef FFMPEG_CONFIG_MAK
6496 FFMPEG_CONFIG_MAK=1
6497 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6498 prefix=$prefix
6499 LIBDIR=\$(DESTDIR)$libdir
6500 SHLIBDIR=\$(DESTDIR)$shlibdir
6501 INCDIR=\$(DESTDIR)$incdir
6502 BINDIR=\$(DESTDIR)$bindir
6503 DATADIR=\$(DESTDIR)$datadir
6504 DOCDIR=\$(DESTDIR)$docdir
6505 MANDIR=\$(DESTDIR)$mandir
6506 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6507 INSTALL_NAME_DIR=$install_name_dir
6508 SRC_PATH=$source_path
6509 SRC_LINK=$source_link
6510 ifndef MAIN_MAKEFILE
6511 SRC_PATH:=\$(SRC_PATH:.%=..%)
6512 endif
6513 CC_IDENT=$cc_ident
6514 ARCH=$arch
6515 INTRINSICS=$intrinsics
6516 CC=$cc
6517 CXX=$cxx
6518 AS=$as
6519 OBJCC=$objcc
6520 LD=$ld
6521 DEPCC=$dep_cc
6522 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6523 DEPAS=$as
6524 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6525 YASM=$yasmexe
6526 DEPYASM=$yasmexe
6527 AR=$ar
6528 ARFLAGS=$arflags
6529 AR_O=$ar_o
6530 RANLIB=$ranlib
6531 STRIP=$strip
6532 CP=cp -p
6533 LN_S=$ln_s
6534 CPPFLAGS=$CPPFLAGS
6535 CFLAGS=$CFLAGS
6536 CXXFLAGS=$CXXFLAGS
6537 OBJCFLAGS=$OBJCFLAGS
6538 ASFLAGS=$ASFLAGS
6539 AS_C=$AS_C
6540 AS_O=$AS_O
6541 OBJCC_C=$OBJCC_C
6542 OBJCC_E=$OBJCC_E
6543 OBJCC_O=$OBJCC_O
6544 CC_C=$CC_C
6545 CC_E=$CC_E
6546 CC_O=$CC_O
6547 CXX_C=$CXX_C
6548 CXX_O=$CXX_O
6549 LD_O=$LD_O
6550 LD_LIB=$LD_LIB
6551 LD_PATH=$LD_PATH
6552 DLLTOOL=$dlltool
6553 WINDRES=$windres
6554 DEPWINDRES=$dep_cc
6555 DOXYGEN=$doxygen
6556 LDFLAGS=$LDFLAGS
6557 LDEXEFLAGS=$LDEXEFLAGS
6558 LDLIBFLAGS=$LDLIBFLAGS
6559 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6560 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6561 YASMFLAGS=$YASMFLAGS
6562 BUILDSUF=$build_suffix
6563 PROGSSUF=$progs_suffix
6564 FULLNAME=$FULLNAME
6565 LIBPREF=$LIBPREF
6566 LIBSUF=$LIBSUF
6567 LIBNAME=$LIBNAME
6568 SLIBPREF=$SLIBPREF
6569 SLIBSUF=$SLIBSUF
6570 EXESUF=$EXESUF
6571 EXTRA_VERSION=$extra_version
6572 CCDEP=$CCDEP
6573 CXXDEP=$CXXDEP
6574 CCDEP_FLAGS=$CCDEP_FLAGS
6575 ASDEP=$ASDEP
6576 ASDEP_FLAGS=$ASDEP_FLAGS
6577 CC_DEPFLAGS=$CC_DEPFLAGS
6578 AS_DEPFLAGS=$AS_DEPFLAGS
6579 HOSTCC=$host_cc
6580 HOSTLD=$host_ld
6581 HOSTCFLAGS=$host_cflags
6582 HOSTCPPFLAGS=$host_cppflags
6583 HOSTEXESUF=$HOSTEXESUF
6584 HOSTLDFLAGS=$host_ldflags
6585 HOSTLIBS=$host_libs
6586 DEPHOSTCC=$host_cc
6587 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6588 HOSTCCDEP=$HOSTCCDEP
6589 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6590 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6591 HOSTCC_C=$HOSTCC_C
6592 HOSTCC_O=$HOSTCC_O
6593 HOSTLD_O=$HOSTLD_O
6594 TARGET_EXEC=$target_exec $target_exec_args
6595 TARGET_PATH=$target_path
6596 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6597 CFLAGS-ffplay=$sdl_cflags
6598 ZLIB=$($ldflags_filter -lz)
6599 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6600 EXTRALIBS=$extralibs
6601 COMPAT_OBJS=$compat_objs
6602 EXEOBJS=$exeobjs
6603 INSTALL=$install
6604 LIBTARGET=${LIBTARGET}
6605 SLIBNAME=${SLIBNAME}
6606 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6607 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6608 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6609 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6610 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6611 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6612 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6613 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6614 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6615 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6616 NOREDZONE_FLAGS=$noredzone_flags
6617 EOF
6618
6619 get_version(){
6620     lcname=lib${1}
6621     name=$(toupper $lcname)
6622     file=$source_path/$lcname/version.h
6623     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6624     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6625     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6626     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6627     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6628     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6629 }
6630
6631 map 'get_version $v' $LIBRARY_LIST
6632
6633 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6634
6635 print_program_libs(){
6636     eval "program_libs=\$${1}_libs"
6637     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6638 }
6639
6640 map 'print_program_libs $v' $PROGRAM_LIST
6641
6642 cat > $TMPH <<EOF
6643 /* Automatically generated by configure - do not modify! */
6644 #ifndef FFMPEG_CONFIG_H
6645 #define FFMPEG_CONFIG_H
6646 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6647 #define FFMPEG_LICENSE "$(c_escape $license)"
6648 #define CONFIG_THIS_YEAR 2016
6649 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6650 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6651 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6652 #define av_restrict $_restrict
6653 #define EXTERN_PREFIX "${extern_prefix}"
6654 #define EXTERN_ASM ${extern_prefix}
6655 #define BUILDSUF "$build_suffix"
6656 #define SLIBSUF "$SLIBSUF"
6657 #define HAVE_MMX2 HAVE_MMXEXT
6658 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6659 EOF
6660
6661 test -n "$assert_level" &&
6662     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6663
6664 test -n "$malloc_prefix" &&
6665     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6666
6667 if enabled yasm; then
6668     append config_files $TMPASM
6669     printf '' >$TMPASM
6670 fi
6671
6672 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6673
6674
6675 mkdir -p doc
6676 mkdir -p tests
6677 mkdir -p tests/api
6678 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6679
6680 print_config ARCH_   "$config_files" $ARCH_LIST
6681 print_config HAVE_   "$config_files" $HAVE_LIST
6682 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6683                                      $CONFIG_EXTRA      \
6684                                      $ALL_COMPONENTS    \
6685
6686 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6687 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6688
6689 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6690 cp_if_changed $TMPH config.h
6691 touch .config
6692
6693 enabled yasm && cp_if_changed $TMPASM config.asm
6694
6695 cat > $TMPH <<EOF
6696 /* Generated by ffconf */
6697 #ifndef AVUTIL_AVCONFIG_H
6698 #define AVUTIL_AVCONFIG_H
6699 EOF
6700
6701 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6702
6703 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6704
6705 cp_if_changed $TMPH libavutil/avconfig.h
6706
6707 if test -n "$WARNINGS"; then
6708     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6709     enabled fatal_warnings && exit 1
6710 fi
6711
6712 # generate the lists of enabled components
6713 print_enabled_components(){
6714     file=$1
6715     struct_name=$2
6716     name=$3
6717     shift 3
6718     echo "static const $struct_name *$name[] = {" > $TMPH
6719     for c in $*; do
6720         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6721     done
6722     echo "    NULL };" >> $TMPH
6723     cp_if_changed $TMPH $file
6724 }
6725
6726 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6727 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6728
6729 # build pkg-config files
6730
6731 lib_version(){
6732     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6733 }
6734
6735 pkgconfig_generate(){
6736     name=$1
6737     shortname=${name#lib}${build_suffix}
6738     comment=$2
6739     version=$3
6740     libs=$4
6741     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6742     requires=${requires%, }
6743     enabled ${name#lib} || return 0
6744     mkdir -p $name
6745     cat <<EOF > $name/$name${build_suffix}.pc
6746 prefix=$prefix
6747 exec_prefix=\${prefix}
6748 libdir=$libdir
6749 includedir=$incdir
6750
6751 Name: $name
6752 Description: $comment
6753 Version: $version
6754 Requires: $(enabled shared || echo $requires)
6755 Requires.private: $(enabled shared && echo $requires)
6756 Conflicts:
6757 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6758 Libs.private: $(enabled shared && echo $libs)
6759 Cflags: -I\${includedir}
6760 EOF
6761
6762 mkdir -p doc/examples/pc-uninstalled
6763 includedir=${source_path}
6764 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6765     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6766 prefix=
6767 exec_prefix=
6768 libdir=\${pcfiledir}/../../../$name
6769 includedir=${includedir}
6770
6771 Name: $name
6772 Description: $comment
6773 Version: $version
6774 Requires: $requires
6775 Conflicts:
6776 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6777 Cflags: -I\${includedir}
6778 EOF
6779 }
6780
6781 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6782 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6783 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6784 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6785 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6786 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6787 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6788 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6789 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"