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-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 230   --enable-libgme          enable Game Music Emu via libgme [no]
 231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 235   --enable-libmodplug      enable ModPlug via libmodplug [no]
 236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 237   --enable-libnut          enable NUT (de)muxing via libnut,
 238                            native (de)muxer exists [no]
 239   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 240   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 241   --enable-libopencv       enable video filtering via libopencv [no]
 242   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 243   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 244   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 245   --enable-libopus         enable Opus de/encoding via libopus [no]
 246   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 247   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 248   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 249   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 250   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 251   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 252   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 253   --enable-libsoxr         enable Include libsoxr resampling [no]
 254   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 255   --enable-libssh          enable SFTP protocol via libssh [no]
 256   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 257   --enable-libtheora       enable Theora encoding via libtheora [no]
 258   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 259   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 260   --enable-libvidstab      enable video stabilization using vid.stab [no]
 261   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 262   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 263                            native implementation exists [no]
 264   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 265   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 266   --enable-libwebp         enable WebP encoding via libwebp [no]
 267   --enable-libx264         enable H.264 encoding via x264 [no]
 268   --enable-libx265         enable HEVC encoding via x265 [no]
 269   --enable-libxavs         enable AVS encoding via xavs [no]
 270   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 271   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 272   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 273   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 274   --enable-libxvid         enable Xvid encoding via xvidcore,
 275                            native MPEG-4/Xvid encoder exists [no]
 276   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 277   --enable-libzmq          enable message passing via libzmq [no]
 278   --enable-libzvbi         enable teletext support via libzvbi [no]
 279   --disable-lzma           disable lzma [autodetect]
 280   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 281   --enable-mediacodec      enable Android MediaCodec support [no]
 282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl2           disable sdl2 [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --enable-x11grab         enable X11 grabbing (legacy) [no]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297   The following libraries provide various hardware acceleration features:
 298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 300   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 307   --enable-omx             enable OpenMAX IL code [no]
 308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 313
 314 Toolchain options:
 315   --arch=ARCH              select architecture [$arch]
 316   --cpu=CPU                select the minimum required CPU (affects
 317                            instruction selection, may crash on older CPUs)
 318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 319   --progs-suffix=SUFFIX    program name suffix []
 320   --enable-cross-compile   assume a cross-compiler is used
 321   --sysroot=PATH           root of cross-build tree
 322   --sysinclude=PATH        location of cross-build system headers
 323   --target-os=OS           compiler targets OS [$target_os]
 324   --target-exec=CMD        command to run executables on target
 325   --target-path=DIR        path to view of build directory on target
 326   --target-samples=DIR     path to samples directory on target
 327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 328   --toolchain=NAME         set tool defaults according to NAME
 329   --nm=NM                  use nm tool NM [$nm_default]
 330   --ar=AR                  use archive tool AR [$ar_default]
 331   --as=AS                  use assembler AS [$as_default]
 332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 333   --strip=STRIP            use strip tool STRIP [$strip_default]
 334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 336   --cc=CC                  use C compiler CC [$cc_default]
 337   --cxx=CXX                use C compiler CXX [$cxx_default]
 338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 340   --ld=LD                  use linker LD [$ld_default]
 341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 345   --host-cc=HOSTCC         use host C compiler HOSTCC
 346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 348   --host-ld=HOSTLD         use host linker HOSTLD
 349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 350   --host-libs=HLIBS        use libs HLIBS when linking for host
 351   --host-os=OS             compiler host OS [$target_os]
 352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 359   --extra-version=STRING   version string suffix []
 360   --optflags=OPTFLAGS      override optimization-related compiler flags
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 376   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 377
 378 Optimization options (experts only):
 379   --disable-asm            disable all assembly optimizations
 380   --disable-altivec        disable AltiVec optimizations
 381   --disable-vsx            disable VSX optimizations
 382   --disable-power8         disable POWER8 optimizations
 383   --disable-amd3dnow       disable 3DNow! optimizations
 384   --disable-amd3dnowext    disable 3DNow! extended optimizations
 385   --disable-mmx            disable MMX optimizations
 386   --disable-mmxext         disable MMXEXT optimizations
 387   --disable-sse            disable SSE optimizations
 388   --disable-sse2           disable SSE2 optimizations
 389   --disable-sse3           disable SSE3 optimizations
 390   --disable-ssse3          disable SSSE3 optimizations
 391   --disable-sse4           disable SSE4 optimizations
 392   --disable-sse42          disable SSE4.2 optimizations
 393   --disable-avx            disable AVX optimizations
 394   --disable-xop            disable XOP optimizations
 395   --disable-fma3           disable FMA3 optimizations
 396   --disable-fma4           disable FMA4 optimizations
 397   --disable-avx2           disable AVX2 optimizations
 398   --disable-aesni          disable AESNI optimizations
 399   --disable-armv5te        disable armv5te optimizations
 400   --disable-armv6          disable armv6 optimizations
 401   --disable-armv6t2        disable armv6t2 optimizations
 402   --disable-vfp            disable VFP optimizations
 403   --disable-neon           disable NEON optimizations
 404   --disable-inline-asm     disable use of inline assembly
 405   --disable-yasm           disable use of nasm/yasm assembly
 406   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 407   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 408   --disable-msa            disable MSA optimizations
 409   --disable-mipsfpu        disable floating point MIPS optimizations
 410   --disable-mmi            disable Loongson SIMD optimizations
 411   --disable-fast-unaligned consider unaligned accesses slow
 412
 413 Developer options (useful when working on FFmpeg itself):
 414   --disable-debug          disable debugging symbols
 415   --enable-debug=LEVEL     set the debug level [$debuglevel]
 416   --disable-optimizations  disable compiler optimizations
 417   --enable-extra-warnings  enable more compiler warnings
 418   --disable-stripping      disable stripping of executables and shared libraries
 419   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 420                            2 causes a slowdown at runtime.
 421   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 422   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 423                            leaks and errors, using the specified valgrind binary.
 424                            Cannot be combined with --target-exec
 425   --enable-ftrapv          Trap arithmetic overflows
 426   --samples=PATH           location of test samples for FATE, if not set use
 427                            \$FATE_SAMPLES at make invocation time.
 428   --enable-neon-clobber-test check NEON registers for clobbering (should be
 429                            used only for debugging purposes)
 430   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 431                            should be used only for debugging purposes)
 432   --enable-random          randomly enable/disable components
 433   --disable-random
 434   --enable-random=LIST     randomly enable/disable specific components or
 435   --disable-random=LIST    component groups. LIST is a comma-separated list
 436                            of NAME[:PROB] entries where NAME is a component
 437                            (group) and PROB the probability associated with
 438                            NAME (default 0.5).
 439   --random-seed=VALUE      seed value for --enable/disable-random
 440   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 441                            (only applies to --disable-optimizations builds)
 442
 443 NOTE: Object files are built at the place where configure is launched.
 444 EOF
 445   exit 0
 446 }
 447
 448 quotes='""'
 449 if test -t 1 && which tput >/dev/null 2>&1; then
 450     ncolors=$(tput colors)
 451     if test -n "$ncolors" && test $ncolors -ge 8; then
 452         bold_color=$(tput bold)
 453         warn_color=$(tput setaf 3)
 454         error_color=$(tput setaf 1)
 455         reset_color=$(tput sgr0)
 456     fi
 457     # 72 used instead of 80 since that's the default of pr
 458     ncols=$(tput cols)
 459 fi
 460 : ${ncols:=72}
 461
 462 log(){
 463     echo "$@" >> $logfile
 464 }
 465
 466 log_file(){
 467     log BEGIN $1
 468     pr -n -t $1 >> $logfile
 469     log END $1
 470 }
 471
 472 warn(){
 473     log "WARNING: $*"
 474     WARNINGS="${WARNINGS}WARNING: $*\n"
 475 }
 476
 477 die(){
 478     log "$@"
 479     echo "$error_color$bold_color$@$reset_color"
 480     cat <<EOF
 481
 482 If you think configure made a mistake, make sure you are using the latest
 483 version from Git.  If the latest version fails, report the problem to the
 484 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 485 EOF
 486     if disabled logging; then
 487         cat <<EOF
 488 Rerun configure with logging enabled (do not use --disable-logging), and
 489 include the log this produces with your report.
 490 EOF
 491     else
 492         cat <<EOF
 493 Include the log file "$logfile" produced by configure as this will help
 494 solve the problem.
 495 EOF
 496     fi
 497     exit 1
 498 }
 499
 500 # Avoid locale weirdness, besides we really just want to translate ASCII.
 501 toupper(){
 502     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 503 }
 504
 505 tolower(){
 506     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 507 }
 508
 509 c_escape(){
 510     echo "$*" | sed 's/["\\]/\\\0/g'
 511 }
 512
 513 sh_quote(){
 514     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 515     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 516     echo "$v"
 517 }
 518
 519 cleanws(){
 520     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 521 }
 522
 523 filter(){
 524     pat=$1
 525     shift
 526     for v; do
 527         eval "case $v in $pat) echo $v ;; esac"
 528     done
 529 }
 530
 531 filter_out(){
 532     pat=$1
 533     shift
 534     for v; do
 535         eval "case $v in $pat) ;; *) echo $v ;; esac"
 536     done
 537 }
 538
 539 map(){
 540     m=$1
 541     shift
 542     for v; do eval $m; done
 543 }
 544
 545 add_suffix(){
 546     suffix=$1
 547     shift
 548     for v; do echo ${v}${suffix}; done
 549 }
 550
 551 set_all(){
 552     value=$1
 553     shift
 554     for var in $*; do
 555         eval $var=$value
 556     done
 557 }
 558
 559 set_weak(){
 560     value=$1
 561     shift
 562     for var; do
 563         eval : \${$var:=$value}
 564     done
 565 }
 566
 567 sanitize_var_name(){
 568     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 569 }
 570
 571 set_safe(){
 572     var=$1
 573     shift
 574     eval $(sanitize_var_name "$var")='$*'
 575 }
 576
 577 get_safe(){
 578     eval echo \$$(sanitize_var_name "$1")
 579 }
 580
 581 pushvar(){
 582     for pvar in $*; do
 583         eval level=\${${pvar}_level:=0}
 584         eval ${pvar}_${level}="\$$pvar"
 585         eval ${pvar}_level=$(($level+1))
 586     done
 587 }
 588
 589 popvar(){
 590     for pvar in $*; do
 591         eval level=\${${pvar}_level:-0}
 592         test $level = 0 && continue
 593         eval level=$(($level-1))
 594         eval $pvar="\${${pvar}_${level}}"
 595         eval ${pvar}_level=$level
 596         eval unset ${pvar}_${level}
 597     done
 598 }
 599
 600 request(){
 601     for var in $*; do
 602         eval ${var}_requested=yes
 603         eval $var=
 604     done
 605 }
 606
 607 enable(){
 608     set_all yes $*
 609 }
 610
 611 disable(){
 612     set_all no $*
 613 }
 614
 615 enable_weak(){
 616     set_weak yes $*
 617 }
 618
 619 disable_weak(){
 620     set_weak no $*
 621 }
 622
 623 enable_safe(){
 624     for var; do
 625         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 626     done
 627 }
 628
 629 disable_safe(){
 630     for var; do
 631         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 632     done
 633 }
 634
 635 do_enable_deep(){
 636     for var; do
 637         enabled $var && continue
 638         eval sel="\$${var}_select"
 639         eval sgs="\$${var}_suggest"
 640         pushvar var sgs
 641         enable_deep $sel
 642         popvar sgs
 643         enable_deep_weak $sgs
 644         popvar var
 645     done
 646 }
 647
 648 enable_deep(){
 649     do_enable_deep $*
 650     enable $*
 651 }
 652
 653 enable_deep_weak(){
 654     for var; do
 655         disabled $var && continue
 656         pushvar var
 657         do_enable_deep $var
 658         popvar var
 659         enable_weak $var
 660     done
 661 }
 662
 663 requested(){
 664     test "${1#!}" = "$1" && op='=' || op=!=
 665     eval test "x\$${1#!}_requested" $op "xyes"
 666 }
 667
 668 enabled(){
 669     test "${1#!}" = "$1" && op='=' || op=!=
 670     eval test "x\$${1#!}" $op "xyes"
 671 }
 672
 673 disabled(){
 674     test "${1#!}" = "$1" && op='=' || op=!=
 675     eval test "x\$${1#!}" $op "xno"
 676 }
 677
 678 enabled_all(){
 679     for opt; do
 680         enabled $opt || return 1
 681     done
 682 }
 683
 684 disabled_all(){
 685     for opt; do
 686         disabled $opt || return 1
 687     done
 688 }
 689
 690 enabled_any(){
 691     for opt; do
 692         enabled $opt && return 0
 693     done
 694 }
 695
 696 disabled_any(){
 697     for opt; do
 698         disabled $opt && return 0
 699     done
 700     return 1
 701 }
 702
 703 set_default(){
 704     for opt; do
 705         eval : \${$opt:=\$${opt}_default}
 706     done
 707 }
 708
 709 is_in(){
 710     value=$1
 711     shift
 712     for var in $*; do
 713         [ $var = $value ] && return 0
 714     done
 715     return 1
 716 }
 717
 718 do_check_deps(){
 719     for cfg; do
 720         cfg="${cfg#!}"
 721         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 722         disabled ${cfg}_checking && continue
 723         enable ${cfg}_checking
 724         append allopts $cfg
 725
 726         eval dep_all="\$${cfg}_deps"
 727         eval dep_any="\$${cfg}_deps_any"
 728         eval dep_sel="\$${cfg}_select"
 729         eval dep_sgs="\$${cfg}_suggest"
 730         eval dep_ifa="\$${cfg}_if"
 731         eval dep_ifn="\$${cfg}_if_any"
 732
 733         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 734         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 735         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 736
 737         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 738         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 739         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 740         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 741         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 742
 743         if enabled $cfg; then
 744             enable_deep $dep_sel
 745             enable_deep_weak $dep_sgs
 746         fi
 747
 748         disable ${cfg}_checking
 749     done
 750 }
 751
 752 check_deps(){
 753     unset allopts
 754
 755     do_check_deps "$@"
 756
 757     for cfg in $allopts; do
 758         enabled $cfg || continue
 759         eval dep_extralibs="\$${cfg}_extralibs"
 760         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 761     done
 762 }
 763
 764 print_config(){
 765     pfx=$1
 766     files=$2
 767     shift 2
 768     map 'eval echo "$v \${$v:-no}"' "$@" |
 769     awk "BEGIN { split(\"$files\", files) }
 770         {
 771             c = \"$pfx\" toupper(\$1);
 772             v = \$2;
 773             sub(/yes/, 1, v);
 774             sub(/no/,  0, v);
 775             for (f in files) {
 776                 file = files[f];
 777                 if (file ~ /\\.h\$/) {
 778                     printf(\"#define %s %d\\n\", c, v) >>file;
 779                 } else if (file ~ /\\.asm\$/) {
 780                     printf(\"%%define %s %d\\n\", c, v) >>file;
 781                 } else if (file ~ /\\.mak\$/) {
 782                     n = -v ? \"\" : \"!\";
 783                     printf(\"%s%s=yes\\n\", n, c) >>file;
 784                 } else if (file ~ /\\.texi\$/) {
 785                     pre = -v ? \"\" : \"@c \";
 786                     yesno = \$2;
 787                     c2 = tolower(c);
 788                     gsub(/_/, \"-\", c2);
 789                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 790                 }
 791             }
 792         }"
 793 }
 794
 795 print_enabled(){
 796     suf=$1
 797     shift
 798     for v; do
 799         enabled $v && printf "%s\n" ${v%$suf}
 800     done
 801 }
 802
 803 append(){
 804     var=$1
 805     shift
 806     eval "$var=\"\$$var $*\""
 807 }
 808
 809 prepend(){
 810     var=$1
 811     shift
 812     eval "$var=\"$* \$$var\""
 813 }
 814
 815 unique(){
 816     var=$1
 817     uniq_list=""
 818     for tok in $(eval echo \$$var); do
 819         uniq_list="$(filter_out $tok $uniq_list) $tok"
 820     done
 821     eval "$var=\"${uniq_list}\""
 822 }
 823
 824 add_cppflags(){
 825     append CPPFLAGS "$@"
 826 }
 827
 828 add_cflags(){
 829     append CFLAGS $($cflags_filter "$@")
 830 }
 831
 832 add_cxxflags(){
 833     append CXXFLAGS $($cflags_filter "$@")
 834 }
 835
 836 add_asflags(){
 837     append ASFLAGS $($asflags_filter "$@")
 838 }
 839
 840 add_objcflags(){
 841     append OBJCFLAGS $($objcflags_filter "$@")
 842 }
 843
 844 add_ldflags(){
 845     append LDFLAGS $($ldflags_filter "$@")
 846 }
 847
 848 add_ldexeflags(){
 849     append LDEXEFLAGS $($ldflags_filter "$@")
 850 }
 851
 852 add_ldlibflags(){
 853     append LDLIBFLAGS $($ldflags_filter "$@")
 854 }
 855
 856 add_stripflags(){
 857     append ASMSTRIPFLAGS "$@"
 858 }
 859
 860 add_extralibs(){
 861     prepend extralibs $($ldflags_filter "$@")
 862 }
 863
 864 add_host_cppflags(){
 865     append host_cppflags "$@"
 866 }
 867
 868 add_host_cflags(){
 869     append host_cflags $($host_cflags_filter "$@")
 870 }
 871
 872 add_host_ldflags(){
 873     append host_ldflags $($host_ldflags_filter "$@")
 874 }
 875
 876 add_compat(){
 877     append compat_objs $1
 878     shift
 879     map 'add_cppflags -D$v' "$@"
 880 }
 881
 882 check_cmd(){
 883     log "$@"
 884     "$@" >> $logfile 2>&1
 885 }
 886
 887 check_stat(){
 888     log check_stat "$@"
 889     stat "$1" >> $logfile 2>&1
 890 }
 891
 892 cc_o(){
 893     eval printf '%s\\n' $CC_O
 894 }
 895
 896 cc_e(){
 897     eval printf '%s\\n' $CC_E
 898 }
 899
 900 check_cc(){
 901     log check_cc "$@"
 902     cat > $TMPC
 903     log_file $TMPC
 904     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 905 }
 906
 907 check_cxx(){
 908     log check_cxx "$@"
 909     cat > $TMPCPP
 910     log_file $TMPCPP
 911     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 912 }
 913
 914 check_objcc(){
 915     log check_objcc "$@"
 916     cat > $TMPM
 917     log_file $TMPM
 918     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 919 }
 920
 921 check_cpp(){
 922     log check_cpp "$@"
 923     cat > $TMPC
 924     log_file $TMPC
 925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 926 }
 927
 928 as_o(){
 929     eval printf '%s\\n' $AS_O
 930 }
 931
 932 check_as(){
 933     log check_as "$@"
 934     cat > $TMPS
 935     log_file $TMPS
 936     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 937 }
 938
 939 check_inline_asm(){
 940     log check_inline_asm "$@"
 941     name="$1"
 942     code="$2"
 943     shift 2
 944     disable $name
 945     check_cc "$@" <<EOF && enable $name
 946 void foo(void){ __asm__ volatile($code); }
 947 EOF
 948 }
 949
 950 check_inline_asm_flags(){
 951     log check_inline_asm_flags "$@"
 952     name="$1"
 953     code="$2"
 954     flags=''
 955     shift 2
 956     while [ "$1" != "" ]; do
 957       append flags $1
 958       shift
 959     done;
 960     disable $name
 961     cat > $TMPC <<EOF
 962 void foo(void){ __asm__ volatile($code); }
 963 EOF
 964     log_file $TMPC
 965     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 966     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 967 }
 968
 969 check_insn(){
 970     log check_insn "$@"
 971     check_inline_asm ${1}_inline "\"$2\""
 972     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 973 }
 974
 975 check_yasm(){
 976     log check_yasm "$@"
 977     echo "$1" > $TMPS
 978     log_file $TMPS
 979     shift 1
 980     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 981 }
 982
 983 ld_o(){
 984     eval printf '%s\\n' $LD_O
 985 }
 986
 987 check_ld(){
 988     log check_ld "$@"
 989     type=$1
 990     shift 1
 991     flags=$(filter_out '-l*|*.so' $@)
 992     libs=$(filter '-l*|*.so' $@)
 993     check_$type $($cflags_filter $flags) || return
 994     flags=$($ldflags_filter $flags)
 995     libs=$($ldflags_filter $libs)
 996     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 997 }
 998
 999 print_include(){
1000     hdr=$1
1001     test "${hdr%.h}" = "${hdr}" &&
1002         echo "#include $hdr"    ||
1003         echo "#include <$hdr>"
1004 }
1005
1006 check_code(){
1007     log check_code "$@"
1008     check=$1
1009     headers=$2
1010     code=$3
1011     shift 3
1012     {
1013         for hdr in $headers; do
1014             print_include $hdr
1015         done
1016         echo "int main(void) { $code; return 0; }"
1017     } | check_$check "$@"
1018 }
1019
1020 check_cppflags(){
1021     log check_cppflags "$@"
1022     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1023 int x;
1024 EOF
1025 }
1026
1027 test_cflags(){
1028     log test_cflags "$@"
1029     set -- $($cflags_filter "$@")
1030     check_cc "$@" <<EOF
1031 int x;
1032 EOF
1033 }
1034
1035 check_cflags(){
1036     log check_cflags "$@"
1037     test_cflags "$@" && add_cflags "$@"
1038 }
1039
1040 check_cxxflags(){
1041     log check_cxxflags "$@"
1042     set -- $($cflags_filter "$@")
1043     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1044 int x;
1045 EOF
1046 }
1047
1048 test_objcflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_objcc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_objcflags(){
1057     log check_cflags "$@"
1058     test_objcflags "$@" && add_objcflags "$@"
1059 }
1060
1061 test_ldflags(){
1062     log test_ldflags "$@"
1063     check_ld "cc" "$@" <<EOF
1064 int main(void){ return 0; }
1065 EOF
1066 }
1067
1068 check_ldflags(){
1069     log check_ldflags "$@"
1070     test_ldflags "$@" && add_ldflags "$@"
1071 }
1072
1073 test_stripflags(){
1074     log test_stripflags "$@"
1075     # call check_cc to get a fresh TMPO
1076     check_cc <<EOF
1077 int main(void) { return 0; }
1078 EOF
1079     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1080 }
1081
1082 check_stripflags(){
1083     log check_stripflags "$@"
1084     test_stripflags "$@" && add_stripflags "$@"
1085 }
1086
1087 check_header(){
1088     log check_header "$@"
1089     header=$1
1090     shift
1091     disable_safe $header
1092     check_cpp "$@" <<EOF && enable_safe $header
1093 #include <$header>
1094 int x;
1095 EOF
1096 }
1097
1098 check_header_objcc(){
1099     log check_header_objcc "$@"
1100     rm -f -- "$TMPO"
1101     header=$1
1102     shift
1103     disable_safe $header
1104     {
1105        echo "#include <$header>"
1106        echo "int main(void) { return 0; }"
1107     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1108 }
1109
1110 check_func(){
1111     log check_func "$@"
1112     func=$1
1113     shift
1114     disable $func
1115     check_ld "cc" "$@" <<EOF && enable $func
1116 extern int $func();
1117 int main(void){ $func(); }
1118 EOF
1119 }
1120
1121 check_complexfunc(){
1122     log check_complexfunc "$@"
1123     func=$1
1124     narg=$2
1125     shift 2
1126     test $narg = 2 && args="f, g" || args="f * I"
1127     disable $func
1128     check_ld "cc" "$@" <<EOF && enable $func
1129 #include <complex.h>
1130 #include <math.h>
1131 float foo(complex float f, complex float g) { return $func($args); }
1132 int main(void){ return (int) foo; }
1133 EOF
1134 }
1135
1136 check_mathfunc(){
1137     log check_mathfunc "$@"
1138     func=$1
1139     narg=$2
1140     shift 2
1141     test $narg = 2 && args="f, g" || args="f"
1142     disable $func
1143     check_ld "cc" "$@" <<EOF && enable $func
1144 #include <math.h>
1145 float foo(float f, float g) { return $func($args); }
1146 int main(void){ return (int) foo; }
1147 EOF
1148 }
1149
1150 check_func_headers(){
1151     log check_func_headers "$@"
1152     headers=$1
1153     funcs=$2
1154     shift 2
1155     {
1156         for hdr in $headers; do
1157             print_include $hdr
1158         done
1159         echo "#include <stdint.h>"
1160         for func in $funcs; do
1161             echo "long check_$func(void) { return (long) $func; }"
1162         done
1163         echo "int main(void) { int ret = 0;"
1164         # LTO could optimize out the test functions without this
1165         for func in $funcs; do
1166             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1167         done
1168         echo "return ret; }"
1169     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1170 }
1171
1172 check_class_headers_cpp(){
1173     log check_class_headers_cpp "$@"
1174     headers=$1
1175     classes=$2
1176     shift 2
1177     {
1178         for hdr in $headers; do
1179             echo "#include <$hdr>"
1180         done
1181         echo "int main(void) { "
1182         i=1
1183         for class in $classes; do
1184             echo "$class obj$i;"
1185             i=$(expr $i + 1)
1186         done
1187         echo "return 0; }"
1188     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1189 }
1190
1191 check_cpp_condition(){
1192     log check_cpp_condition "$@"
1193     header=$1
1194     condition=$2
1195     shift 2
1196     check_cpp "$@" <<EOF
1197 #include <$header>
1198 #if !($condition)
1199 #error "unsatisfied condition: $condition"
1200 #endif
1201 EOF
1202 }
1203
1204 test_cflags_cc(){
1205     log test_cflags_cc "$@"
1206     flags=$1
1207     header=$2
1208     condition=$3
1209     shift 3
1210     set -- $($cflags_filter "$flags")
1211     check_cc "$@" <<EOF
1212 #include <$header>
1213 #if !($condition)
1214 #error "unsatisfied condition: $condition"
1215 #endif
1216 EOF
1217 }
1218
1219 check_lib(){
1220     log check_lib "$@"
1221     header="$1"
1222     func="$2"
1223     shift 2
1224     check_header $header && check_func $func "$@" && add_extralibs "$@"
1225 }
1226
1227 check_lib2(){
1228     log check_lib2 "$@"
1229     headers="$1"
1230     funcs="$2"
1231     shift 2
1232     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1233 }
1234
1235 check_lib_cpp(){
1236     log check_lib_cpp "$@"
1237     headers="$1"
1238     classes="$2"
1239     shift 2
1240     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1241 }
1242
1243 check_pkg_config(){
1244     log check_pkg_config "$@"
1245     pkgandversion="$1"
1246     pkg="${1%% *}"
1247     headers="$2"
1248     funcs="$3"
1249     shift 3
1250     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1251     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1252     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1253     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1254         set_safe "${pkg}_cflags" $pkg_cflags   &&
1255         set_safe "${pkg}_libs"   $pkg_libs
1256 }
1257
1258 check_exec(){
1259     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1260 }
1261
1262 check_exec_crash(){
1263     code=$(cat)
1264
1265     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1266     # are safe but may not be available everywhere.  Thus we use
1267     # raise(SIGTERM) instead.  The check is run in a subshell so we
1268     # can redirect the "Terminated" message from the shell.  SIGBUS
1269     # is not defined by standard C so it is used conditionally.
1270
1271     (check_exec "$@") >> $logfile 2>&1 <<EOF
1272 #include <signal.h>
1273 static void sighandler(int sig){
1274     raise(SIGTERM);
1275 }
1276 int foo(void){
1277     $code
1278 }
1279 int (*func_ptr)(void) = foo;
1280 int main(void){
1281     signal(SIGILL, sighandler);
1282     signal(SIGFPE, sighandler);
1283     signal(SIGSEGV, sighandler);
1284 #ifdef SIGBUS
1285     signal(SIGBUS, sighandler);
1286 #endif
1287     return func_ptr();
1288 }
1289 EOF
1290 }
1291
1292 check_type(){
1293     log check_type "$@"
1294     headers=$1
1295     type=$2
1296     shift 2
1297     disable_safe "$type"
1298     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1299 }
1300
1301 check_struct(){
1302     log check_struct "$@"
1303     headers=$1
1304     struct=$2
1305     member=$3
1306     shift 3
1307     disable_safe "${struct}_${member}"
1308     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1309         enable_safe "${struct}_${member}"
1310 }
1311
1312 check_builtin(){
1313     log check_builtin "$@"
1314     name=$1
1315     headers=$2
1316     builtin=$3
1317     shift 3
1318     disable "$name"
1319     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1320 }
1321
1322 check_compile_assert(){
1323     log check_compile_assert "$@"
1324     name=$1
1325     headers=$2
1326     condition=$3
1327     shift 3
1328     disable "$name"
1329     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1330 }
1331
1332 require(){
1333     name="$1"
1334     header="$2"
1335     func="$3"
1336     shift 3
1337     check_lib $header $func "$@" || die "ERROR: $name not found"
1338 }
1339
1340 require2(){
1341     name="$1"
1342     headers="$2"
1343     func="$3"
1344     shift 3
1345     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1346 }
1347
1348 require_cpp(){
1349     name="$1"
1350     headers="$2"
1351     classes="$3"
1352     shift 3
1353     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1354 }
1355
1356 use_pkg_config(){
1357     pkg="$1"
1358     check_pkg_config "$@" || return 1
1359     add_cflags    $(get_safe "${pkg}_cflags")
1360     add_extralibs $(get_safe "${pkg}_libs")
1361 }
1362
1363 require_pkg_config(){
1364     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1365 }
1366
1367 require_libfreetype(){
1368     log require_libfreetype "$@"
1369     pkg="freetype2"
1370     check_cmd $pkg_config --exists --print-errors $pkg \
1371       || die "ERROR: $pkg not found"
1372     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1373     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1374     {
1375         echo "#include <ft2build.h>"
1376         echo "#include FT_FREETYPE_H"
1377         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1378         echo "int main(void) { return 0; }"
1379     } | check_ld "cc" $pkg_cflags $pkg_libs \
1380       && set_safe "${pkg}_cflags" $pkg_cflags \
1381       && set_safe "${pkg}_libs"   $pkg_libs \
1382       || die "ERROR: $pkg not found"
1383     add_cflags    $(get_safe "${pkg}_cflags")
1384     add_extralibs $(get_safe "${pkg}_libs")
1385 }
1386
1387 hostcc_e(){
1388     eval printf '%s\\n' $HOSTCC_E
1389 }
1390
1391 hostcc_o(){
1392     eval printf '%s\\n' $HOSTCC_O
1393 }
1394
1395 check_host_cc(){
1396     log check_host_cc "$@"
1397     cat > $TMPC
1398     log_file $TMPC
1399     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1400 }
1401
1402 check_host_cpp(){
1403     log check_host_cpp "$@"
1404     cat > $TMPC
1405     log_file $TMPC
1406     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1407 }
1408
1409 check_host_cppflags(){
1410     log check_host_cppflags "$@"
1411     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1412 int x;
1413 EOF
1414 }
1415
1416 check_host_cflags(){
1417     log check_host_cflags "$@"
1418     set -- $($host_cflags_filter "$@")
1419     check_host_cc "$@" <<EOF && append host_cflags "$@"
1420 int x;
1421 EOF
1422 }
1423
1424 check_host_cpp_condition(){
1425     log check_host_cpp_condition "$@"
1426     header=$1
1427     condition=$2
1428     shift 2
1429     check_host_cpp "$@" <<EOF
1430 #include <$header>
1431 #if !($condition)
1432 #error "unsatisfied condition: $condition"
1433 #endif
1434 EOF
1435 }
1436
1437 cp_if_changed(){
1438     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1439     mkdir -p "$(dirname $2)"
1440     $cp_f "$1" "$2"
1441 }
1442
1443 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1444 # system-dependent things.
1445
1446 AVCODEC_COMPONENTS="
1447     bsfs
1448     decoders
1449     encoders
1450     hwaccels
1451     parsers
1452 "
1453
1454 AVDEVICE_COMPONENTS="
1455     indevs
1456     outdevs
1457 "
1458 AVFILTER_COMPONENTS="
1459     filters
1460 "
1461 AVFORMAT_COMPONENTS="
1462     demuxers
1463     muxers
1464     protocols
1465 "
1466
1467 AVRESAMPLE_COMPONENTS=""
1468 AVUTIL_COMPONENTS=""
1469
1470 COMPONENT_LIST="
1471     $AVCODEC_COMPONENTS
1472     $AVDEVICE_COMPONENTS
1473     $AVFILTER_COMPONENTS
1474     $AVFORMAT_COMPONENTS
1475     $AVRESAMPLE_COMPONENTS
1476     $AVUTIL_COMPONENTS
1477 "
1478
1479 EXAMPLE_LIST="
1480     avio_dir_cmd_example
1481     avio_reading_example
1482     decoding_encoding_example
1483     demuxing_decoding_example
1484     extract_mvs_example
1485     filter_audio_example
1486     filtering_audio_example
1487     filtering_video_example
1488     http_multiclient_example
1489     metadata_example
1490     muxing_example
1491     qsvdec_example
1492     remuxing_example
1493     resampling_audio_example
1494     scaling_video_example
1495     transcode_aac_example
1496     transcoding_example
1497 "
1498 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1499     bzlib
1500     iconv
1501     libxcb
1502     libxcb_shm
1503     libxcb_shape
1504     libxcb_xfixes
1505     lzma
1506     schannel
1507     sdl
1508     sdl2
1509     securetransport
1510     xlib
1511     zlib
1512 "
1513
1514 EXTERNAL_LIBRARY_LIST="
1515     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1516     avisynth
1517     chromaprint
1518     crystalhd
1519     decklink
1520     frei0r
1521     gcrypt
1522     gmp
1523     gnutls
1524     jni
1525     ladspa
1526     libass
1527     libbluray
1528     libbs2b
1529     libcaca
1530     libcdio
1531     libcelt
1532     libdc1394
1533     libfdk_aac
1534     libflite
1535     libfontconfig
1536     libfreetype
1537     libfribidi
1538     libgme
1539     libgsm
1540     libiec61883
1541     libilbc
1542     libkvazaar
1543     libmodplug
1544     libmp3lame
1545     libnut
1546     libopencore_amrnb
1547     libopencore_amrwb
1548     libopencv
1549     libopenh264
1550     libopenjpeg
1551     libopenmpt
1552     libopus
1553     libpulse
1554     librtmp
1555     librubberband
1556     libschroedinger
1557     libshine
1558     libsmbclient
1559     libsnappy
1560     libsoxr
1561     libspeex
1562     libssh
1563     libtesseract
1564     libtheora
1565     libtwolame
1566     libv4l2
1567     libvidstab
1568     libvo_amrwbenc
1569     libvorbis
1570     libvpx
1571     libwavpack
1572     libwebp
1573     libx264
1574     libx265
1575     libxavs
1576     libxvid
1577     libzimg
1578     libzmq
1579     libzvbi
1580     mediacodec
1581     netcdf
1582     openal
1583     opencl
1584     opengl
1585     openssl
1586     videotoolbox
1587     x11grab
1588 "
1589 HWACCEL_AUTODETECT_LIBRARY_LIST="
1590     audiotoolbox
1591     cuda
1592     cuvid
1593     d3d11va
1594     dxva2
1595     nvenc
1596     vaapi
1597     vda
1598     vdpau
1599     videotoolbox_hwaccel
1600     xvmc
1601 "
1602
1603 HWACCEL_LIBRARY_LIST="
1604     $HWACCEL_AUTODETECT_LIBRARY_LIST
1605     libmfx
1606     libnpp
1607     mmal
1608     omx
1609 "
1610
1611 DOCUMENT_LIST="
1612     doc
1613     htmlpages
1614     manpages
1615     podpages
1616     txtpages
1617 "
1618
1619 FEATURE_LIST="
1620     ftrapv
1621     gray
1622     hardcoded_tables
1623     omx_rpi
1624     runtime_cpudetect
1625     safe_bitstream_reader
1626     shared
1627     small
1628     static
1629     swscale_alpha
1630 "
1631
1632 LIBRARY_LIST="
1633     avcodec
1634     avdevice
1635     avfilter
1636     avformat
1637     avresample
1638     avutil
1639     postproc
1640     swresample
1641     swscale
1642 "
1643
1644 LICENSE_LIST="
1645     gpl
1646     nonfree
1647     version3
1648 "
1649
1650 PROGRAM_LIST="
1651     ffplay
1652     ffprobe
1653     ffserver
1654     ffmpeg
1655 "
1656
1657 SUBSYSTEM_LIST="
1658     dct
1659     dwt
1660     error_resilience
1661     faan
1662     fast_unaligned
1663     fft
1664     lsp
1665     lzo
1666     mdct
1667     pixelutils
1668     network
1669     rdft
1670 "
1671
1672 CONFIG_LIST="
1673     $COMPONENT_LIST
1674     $DOCUMENT_LIST
1675     $EXAMPLE_LIST
1676     $EXTERNAL_LIBRARY_LIST
1677     $HWACCEL_LIBRARY_LIST
1678     $FEATURE_LIST
1679     $LICENSE_LIST
1680     $LIBRARY_LIST
1681     $PROGRAM_LIST
1682     $SUBSYSTEM_LIST
1683     fontconfig
1684     memalign_hack
1685     memory_poisoning
1686     neon_clobber_test
1687     pic
1688     pod2man
1689     raise_major
1690     thumb
1691     valgrind_backtrace
1692     xmm_clobber_test
1693 "
1694
1695 THREADS_LIST="
1696     pthreads
1697     os2threads
1698     w32threads
1699 "
1700
1701 ATOMICS_LIST="
1702     atomics_gcc
1703     atomics_suncc
1704     atomics_win32
1705 "
1706
1707 AUTODETECT_LIBS="
1708     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1709     $HWACCEL_AUTODETECT_LIBRARY_LIST
1710     $THREADS_LIST
1711 "
1712
1713 ARCH_LIST="
1714     aarch64
1715     alpha
1716     arm
1717     avr32
1718     avr32_ap
1719     avr32_uc
1720     bfin
1721     ia64
1722     m68k
1723     mips
1724     mips64
1725     parisc
1726     ppc
1727     ppc64
1728     s390
1729     sh4
1730     sparc
1731     sparc64
1732     tilegx
1733     tilepro
1734     tomi
1735     x86
1736     x86_32
1737     x86_64
1738 "
1739
1740 ARCH_EXT_LIST_ARM="
1741     armv5te
1742     armv6
1743     armv6t2
1744     armv8
1745     neon
1746     vfp
1747     vfpv3
1748     setend
1749 "
1750
1751 ARCH_EXT_LIST_MIPS="
1752     mipsfpu
1753     mips32r2
1754     mips32r5
1755     mips64r2
1756     mips32r6
1757     mips64r6
1758     mipsdsp
1759     mipsdspr2
1760     msa
1761 "
1762
1763 ARCH_EXT_LIST_LOONGSON="
1764     loongson2
1765     loongson3
1766     mmi
1767 "
1768
1769 ARCH_EXT_LIST_X86_SIMD="
1770     aesni
1771     amd3dnow
1772     amd3dnowext
1773     avx
1774     avx2
1775     fma3
1776     fma4
1777     mmx
1778     mmxext
1779     sse
1780     sse2
1781     sse3
1782     sse4
1783     sse42
1784     ssse3
1785     xop
1786 "
1787
1788 ARCH_EXT_LIST_PPC="
1789     altivec
1790     dcbzl
1791     ldbrx
1792     power8
1793     ppc4xx
1794     vsx
1795 "
1796
1797 ARCH_EXT_LIST_X86="
1798     $ARCH_EXT_LIST_X86_SIMD
1799     cpunop
1800     i686
1801 "
1802
1803 ARCH_EXT_LIST="
1804     $ARCH_EXT_LIST_ARM
1805     $ARCH_EXT_LIST_PPC
1806     $ARCH_EXT_LIST_X86
1807     $ARCH_EXT_LIST_MIPS
1808     $ARCH_EXT_LIST_LOONGSON
1809 "
1810
1811 ARCH_FEATURES="
1812     aligned_stack
1813     fast_64bit
1814     fast_clz
1815     fast_cmov
1816     local_aligned_8
1817     local_aligned_16
1818     local_aligned_32
1819     simd_align_16
1820 "
1821
1822 BUILTIN_LIST="
1823     atomic_cas_ptr
1824     atomic_compare_exchange
1825     machine_rw_barrier
1826     MemoryBarrier
1827     mm_empty
1828     rdtsc
1829     sarestart
1830     sem_timedwait
1831     sync_val_compare_and_swap
1832 "
1833 HAVE_LIST_CMDLINE="
1834     inline_asm
1835     symver
1836     yasm
1837 "
1838
1839 HAVE_LIST_PUB="
1840     bigendian
1841     fast_unaligned
1842 "
1843
1844 HEADERS_LIST="
1845     alsa_asoundlib_h
1846     altivec_h
1847     arpa_inet_h
1848     asm_types_h
1849     cdio_paranoia_h
1850     cdio_paranoia_paranoia_h
1851     cuda_h
1852     dispatch_dispatch_h
1853     dev_bktr_ioctl_bt848_h
1854     dev_bktr_ioctl_meteor_h
1855     dev_ic_bt8xx_h
1856     dev_video_bktr_ioctl_bt848_h
1857     dev_video_meteor_ioctl_meteor_h
1858     direct_h
1859     dirent_h
1860     dlfcn_h
1861     d3d11_h
1862     dxva_h
1863     ES2_gl_h
1864     gsm_h
1865     io_h
1866     mach_mach_time_h
1867     machine_ioctl_bt848_h
1868     machine_ioctl_meteor_h
1869     malloc_h
1870     opencv2_core_core_c_h
1871     openjpeg_2_1_openjpeg_h
1872     openjpeg_2_0_openjpeg_h
1873     openjpeg_1_5_openjpeg_h
1874     OpenGL_gl3_h
1875     poll_h
1876     sndio_h
1877     soundcard_h
1878     stdatomic_h
1879     sys_mman_h
1880     sys_param_h
1881     sys_resource_h
1882     sys_select_h
1883     sys_soundcard_h
1884     sys_time_h
1885     sys_un_h
1886     sys_videoio_h
1887     termios_h
1888     udplite_h
1889     unistd_h
1890     valgrind_valgrind_h
1891     windows_h
1892     winsock2_h
1893 "
1894
1895 INTRINSICS_LIST="
1896     intrinsics_neon
1897 "
1898
1899 COMPLEX_FUNCS="
1900     cabs
1901     cexp
1902 "
1903
1904 MATH_FUNCS="
1905     atanf
1906     atan2f
1907     cbrt
1908     cbrtf
1909     copysign
1910     cosf
1911     erf
1912     exp2
1913     exp2f
1914     expf
1915     hypot
1916     isfinite
1917     isinf
1918     isnan
1919     ldexpf
1920     llrint
1921     llrintf
1922     log2
1923     log2f
1924     log10f
1925     lrint
1926     lrintf
1927     powf
1928     rint
1929     round
1930     roundf
1931     sinf
1932     trunc
1933     truncf
1934 "
1935
1936 SYSTEM_FUNCS="
1937     access
1938     aligned_malloc
1939     arc4random
1940     clock_gettime
1941     closesocket
1942     CommandLineToArgvW
1943     CoTaskMemFree
1944     CryptGenRandom
1945     dlopen
1946     fcntl
1947     flt_lim
1948     fork
1949     getaddrinfo
1950     gethrtime
1951     getopt
1952     GetProcessAffinityMask
1953     GetProcessMemoryInfo
1954     GetProcessTimes
1955     getrusage
1956     GetSystemTimeAsFileTime
1957     gettimeofday
1958     glob
1959     glXGetProcAddress
1960     gmtime_r
1961     inet_aton
1962     isatty
1963     jack_port_get_latency_range
1964     kbhit
1965     LoadLibrary
1966     localtime_r
1967     lstat
1968     lzo1x_999_compress
1969     mach_absolute_time
1970     MapViewOfFile
1971     memalign
1972     mkstemp
1973     mmap
1974     mprotect
1975     nanosleep
1976     PeekNamedPipe
1977     posix_memalign
1978     pthread_cancel
1979     sched_getaffinity
1980     SetConsoleTextAttribute
1981     SetConsoleCtrlHandler
1982     setmode
1983     setrlimit
1984     Sleep
1985     strerror_r
1986     sysconf
1987     sysctl
1988     usleep
1989     UTGetOSTypeFromString
1990     VirtualAlloc
1991     wglGetProcAddress
1992 "
1993
1994 TOOLCHAIN_FEATURES="
1995     as_dn_directive
1996     as_fpu_directive
1997     as_func
1998     as_object_arch
1999     asm_mod_q
2000     attribute_may_alias
2001     attribute_packed
2002     ebp_available
2003     ebx_available
2004     gnu_as
2005     gnu_windres
2006     ibm_asm
2007     inline_asm_direct_symbol_refs
2008     inline_asm_labels
2009     inline_asm_nonlocal_labels
2010     pragma_deprecated
2011     rsync_contimeout
2012     symver_asm_label
2013     symver_gnu_asm
2014     vfp_args
2015     xform_asm
2016     xmm_clobbers
2017 "
2018
2019 TYPES_LIST="
2020     CONDITION_VARIABLE_Ptr
2021     socklen_t
2022     struct_addrinfo
2023     struct_group_source_req
2024     struct_ip_mreq_source
2025     struct_ipv6_mreq
2026     struct_msghdr_msg_flags
2027     struct_pollfd
2028     struct_rusage_ru_maxrss
2029     struct_sctp_event_subscribe
2030     struct_sockaddr_in6
2031     struct_sockaddr_sa_len
2032     struct_sockaddr_storage
2033     struct_stat_st_mtim_tv_nsec
2034     struct_v4l2_frmivalenum_discrete
2035 "
2036
2037 HAVE_LIST="
2038     $ARCH_EXT_LIST
2039     $(add_suffix _external $ARCH_EXT_LIST)
2040     $(add_suffix _inline   $ARCH_EXT_LIST)
2041     $ARCH_FEATURES
2042     $ATOMICS_LIST
2043     $BUILTIN_LIST
2044     $COMPLEX_FUNCS
2045     $HAVE_LIST_CMDLINE
2046     $HAVE_LIST_PUB
2047     $HEADERS_LIST
2048     $INTRINSICS_LIST
2049     $MATH_FUNCS
2050     $SYSTEM_FUNCS
2051     $THREADS_LIST
2052     $TOOLCHAIN_FEATURES
2053     $TYPES_LIST
2054     atomics_native
2055     dos_paths
2056     dxva2_lib
2057     dxva2api_cobj
2058     libc_msvcrt
2059     libdc1394_1
2060     libdc1394_2
2061     makeinfo
2062     makeinfo_html
2063     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2064     perl
2065     pod2man
2066     sdl2
2067     section_data_rel_ro
2068     texi2html
2069     threads
2070     vaapi_drm
2071     vaapi_x11
2072     vdpau_x11
2073     winrt
2074     xlib
2075 "
2076
2077 # options emitted with CONFIG_ prefix but not available on the command line
2078 CONFIG_EXTRA="
2079     aandcttables
2080     ac3dsp
2081     audio_frame_queue
2082     audiodsp
2083     blockdsp
2084     bswapdsp
2085     cabac
2086     dirac_parse
2087     dvprofile
2088     exif
2089     faandct
2090     faanidct
2091     fdctdsp
2092     flacdsp
2093     fmtconvert
2094     frame_thread_encoder
2095     g722dsp
2096     golomb
2097     gplv3
2098     h263dsp
2099     h264chroma
2100     h264dsp
2101     h264parse
2102     h264pred
2103     h264qpel
2104     hpeldsp
2105     huffman
2106     huffyuvdsp
2107     huffyuvencdsp
2108     idctdsp
2109     iirfilter
2110     mdct15
2111     intrax8
2112     iso_media
2113     ividsp
2114     jpegtables
2115     lgplv3
2116     libx262
2117     llauddsp
2118     llviddsp
2119     llvidencdsp
2120     lpc
2121     lzf
2122     me_cmp
2123     mpeg_er
2124     mpegaudio
2125     mpegaudiodsp
2126     mpegvideo
2127     mpegvideoenc
2128     mss34dsp
2129     pixblockdsp
2130     qpeldsp
2131     qsv
2132     qsvdec
2133     qsvenc
2134     rangecoder
2135     riffdec
2136     riffenc
2137     rtpdec
2138     rtpenc_chain
2139     rv34dsp
2140     sinewin
2141     snappy
2142     srtp
2143     startcode
2144     texturedsp
2145     texturedspenc
2146     tpeldsp
2147     vaapi_encode
2148     vc1dsp
2149     videodsp
2150     vp3dsp
2151     vp56dsp
2152     vp8dsp
2153     vt_bt2020
2154     wma_freqs
2155     wmv2dsp
2156 "
2157
2158 CMDLINE_SELECT="
2159     $ARCH_EXT_LIST
2160     $CONFIG_LIST
2161     $HAVE_LIST_CMDLINE
2162     $THREADS_LIST
2163     asm
2164     cross_compile
2165     debug
2166     extra_warnings
2167     logging
2168     lto
2169     optimizations
2170     rpath
2171     stripping
2172 "
2173
2174 PATHS_LIST="
2175     bindir
2176     datadir
2177     docdir
2178     incdir
2179     libdir
2180     mandir
2181     pkgconfigdir
2182     prefix
2183     shlibdir
2184     install_name_dir
2185 "
2186
2187 CMDLINE_SET="
2188     $PATHS_LIST
2189     ar
2190     arch
2191     as
2192     assert_level
2193     build_suffix
2194     cc
2195     objcc
2196     cpu
2197     cross_prefix
2198     custom_allocator
2199     cxx
2200     dep_cc
2201     doxygen
2202     env
2203     extra_version
2204     gas
2205     host_cc
2206     host_cflags
2207     host_ld
2208     host_ldflags
2209     host_libs
2210     host_os
2211     install
2212     ld
2213     ln_s
2214     logfile
2215     malloc_prefix
2216     nm
2217     optflags
2218     pkg_config
2219     pkg_config_flags
2220     progs_suffix
2221     random_seed
2222     ranlib
2223     samples
2224     strip
2225     sws_max_filter_size
2226     sysinclude
2227     sysroot
2228     target_exec
2229     target_os
2230     target_path
2231     target_samples
2232     tempprefix
2233     toolchain
2234     valgrind
2235     yasmexe
2236 "
2237
2238 CMDLINE_APPEND="
2239     extra_cflags
2240     extra_cxxflags
2241     extra_objcflags
2242     host_cppflags
2243 "
2244
2245 # code dependency declarations
2246
2247 # architecture extensions
2248
2249 armv5te_deps="arm"
2250 armv6_deps="arm"
2251 armv6t2_deps="arm"
2252 armv8_deps="aarch64"
2253 neon_deps_any="aarch64 arm"
2254 intrinsics_neon_deps="neon"
2255 vfp_deps_any="aarch64 arm"
2256 vfpv3_deps="vfp"
2257 setend_deps="arm"
2258
2259 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2260
2261 loongson2_deps="mips"
2262 loongson3_deps="mips"
2263 mipsfpu_deps="mips"
2264 mipsdsp_deps="mips"
2265 mipsdspr2_deps="mips"
2266 mips32r2_deps="mips"
2267 mips32r5_deps="mips"
2268 mips32r6_deps="mips"
2269 mips64r2_deps="mips"
2270 mips64r6_deps="mips"
2271 msa_deps="mipsfpu"
2272 mmi_deps="mips"
2273
2274 altivec_deps="ppc"
2275 dcbzl_deps="ppc"
2276 ldbrx_deps="ppc"
2277 ppc4xx_deps="ppc"
2278 vsx_deps="altivec"
2279 power8_deps="vsx"
2280
2281 cpunop_deps="i686"
2282 x86_64_select="i686"
2283 x86_64_suggest="fast_cmov"
2284
2285 amd3dnow_deps="mmx"
2286 amd3dnowext_deps="amd3dnow"
2287 i686_deps="x86"
2288 mmx_deps="x86"
2289 mmxext_deps="mmx"
2290 sse_deps="mmxext"
2291 sse2_deps="sse"
2292 sse3_deps="sse2"
2293 ssse3_deps="sse3"
2294 sse4_deps="ssse3"
2295 sse42_deps="sse4"
2296 aesni_deps="sse42"
2297 avx_deps="sse42"
2298 xop_deps="avx"
2299 fma3_deps="avx"
2300 fma4_deps="avx"
2301 avx2_deps="avx"
2302
2303 mmx_external_deps="yasm"
2304 mmx_inline_deps="inline_asm"
2305 mmx_suggest="mmx_external mmx_inline"
2306
2307 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2308     eval dep=\$${ext}_deps
2309     eval ${ext}_external_deps='"${dep}_external"'
2310     eval ${ext}_inline_deps='"${dep}_inline"'
2311     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2312 done
2313
2314 aligned_stack_if_any="aarch64 ppc x86"
2315 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2316 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2317 fast_unaligned_if_any="aarch64 ppc x86"
2318 simd_align_16_if_any="altivec neon sse"
2319
2320 # system capabilities
2321 symver_if_any="symver_asm_label symver_gnu_asm"
2322 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2323
2324 # threading support
2325 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2326 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2327 atomics_win32_if="MemoryBarrier"
2328 atomics_native_if_any="$ATOMICS_LIST"
2329 w32threads_deps="atomics_native"
2330 threads_if_any="$THREADS_LIST"
2331
2332 # subsystems
2333 dct_select="rdft"
2334 dirac_parse_select="golomb"
2335 error_resilience_select="me_cmp"
2336 faandct_deps="faan fdctdsp"
2337 faanidct_deps="faan idctdsp"
2338 h264dsp_select="startcode"
2339 frame_thread_encoder_deps="encoders threads"
2340 intrax8_select="blockdsp idctdsp"
2341 mdct_select="fft"
2342 mdct15_select="fft"
2343 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2344 mpeg_er_select="error_resilience"
2345 mpegaudio_select="mpegaudiodsp"
2346 mpegaudiodsp_select="dct"
2347 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2348 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2349 vc1dsp_select="h264chroma qpeldsp startcode"
2350 rdft_select="fft"
2351
2352 # decoders / encoders
2353 aac_decoder_select="mdct15 mdct sinewin"
2354 aac_fixed_decoder_select="mdct sinewin"
2355 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2356 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2357 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2358 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2359 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2360 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2361 adpcm_g722_decoder_select="g722dsp"
2362 adpcm_g722_encoder_select="g722dsp"
2363 aic_decoder_select="golomb idctdsp"
2364 alac_encoder_select="lpc"
2365 als_decoder_select="bswapdsp"
2366 amrnb_decoder_select="lsp"
2367 amrwb_decoder_select="lsp"
2368 amv_decoder_select="sp5x_decoder exif"
2369 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2370 ape_decoder_select="bswapdsp llauddsp"
2371 apng_decoder_select="zlib"
2372 apng_encoder_select="llvidencdsp zlib"
2373 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2374 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2375 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2376 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2377 atrac1_decoder_select="mdct sinewin"
2378 atrac3_decoder_select="mdct"
2379 atrac3p_decoder_select="mdct sinewin"
2380 avrn_decoder_select="exif jpegtables"
2381 bink_decoder_select="blockdsp hpeldsp"
2382 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2383 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2384 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2385 cllc_decoder_select="bswapdsp"
2386 comfortnoise_encoder_select="lpc"
2387 cook_decoder_select="audiodsp mdct sinewin"
2388 cscd_decoder_select="lzo"
2389 cscd_decoder_suggest="zlib"
2390 dca_decoder_select="mdct"
2391 dds_decoder_select="texturedsp"
2392 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2393 dnxhd_decoder_select="blockdsp idctdsp"
2394 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2395 dvvideo_decoder_select="dvprofile idctdsp"
2396 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2397 dxa_decoder_select="zlib"
2398 dxv_decoder_select="lzf texturedsp"
2399 eac3_decoder_select="ac3_decoder"
2400 eac3_encoder_select="ac3_encoder"
2401 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2402 eatgq_decoder_select="aandcttables"
2403 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2404 exr_decoder_select="zlib"
2405 ffv1_decoder_select="golomb rangecoder"
2406 ffv1_encoder_select="rangecoder"
2407 ffvhuff_decoder_select="huffyuv_decoder"
2408 ffvhuff_encoder_select="huffyuv_encoder"
2409 fic_decoder_select="golomb"
2410 flac_decoder_select="flacdsp golomb"
2411 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2412 flashsv2_decoder_select="zlib"
2413 flashsv2_encoder_select="zlib"
2414 flashsv_decoder_select="zlib"
2415 flashsv_encoder_select="zlib"
2416 flv_decoder_select="h263_decoder"
2417 flv_encoder_select="h263_encoder"
2418 fourxm_decoder_select="blockdsp bswapdsp"
2419 fraps_decoder_select="bswapdsp huffman"
2420 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2421 g729_decoder_select="audiodsp"
2422 h261_decoder_select="mpegvideo"
2423 h261_encoder_select="aandcttables mpegvideoenc"
2424 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2425 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2426 h263i_decoder_select="h263_decoder"
2427 h263p_decoder_select="h263_decoder"
2428 h263p_encoder_select="h263_encoder"
2429 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2430 h264_decoder_suggest="error_resilience"
2431 hap_decoder_select="snappy texturedsp"
2432 hap_encoder_deps="libsnappy"
2433 hap_encoder_select="texturedspenc"
2434 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2435 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2436 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2437 iac_decoder_select="imc_decoder"
2438 imc_decoder_select="bswapdsp fft mdct sinewin"
2439 indeo3_decoder_select="hpeldsp"
2440 indeo4_decoder_select="ividsp"
2441 indeo5_decoder_select="ividsp"
2442 interplay_video_decoder_select="hpeldsp"
2443 jpegls_decoder_select="golomb mjpeg_decoder"
2444 jpegls_encoder_select="golomb"
2445 jv_decoder_select="blockdsp"
2446 lagarith_decoder_select="llviddsp"
2447 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2448 loco_decoder_select="golomb"
2449 magicyuv_decoder_select="llviddsp"
2450 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2451 metasound_decoder_select="lsp mdct sinewin"
2452 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2453 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2454 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2455 mjpegb_decoder_select="mjpeg_decoder"
2456 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2457 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2458 mlp_decoder_select="mlp_parser"
2459 motionpixels_decoder_select="bswapdsp"
2460 mp1_decoder_select="mpegaudio"
2461 mp1float_decoder_select="mpegaudio"
2462 mp2_decoder_select="mpegaudio"
2463 mp2float_decoder_select="mpegaudio"
2464 mp3_decoder_select="mpegaudio"
2465 mp3adu_decoder_select="mpegaudio"
2466 mp3adufloat_decoder_select="mpegaudio"
2467 mp3float_decoder_select="mpegaudio"
2468 mp3on4_decoder_select="mpegaudio"
2469 mp3on4float_decoder_select="mpegaudio"
2470 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2471 mpc8_decoder_select="mpegaudiodsp"
2472 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2473 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2474 mpegvideo_decoder_select="mpegvideo"
2475 mpeg1video_decoder_select="mpegvideo"
2476 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2477 mpeg2video_decoder_select="mpegvideo"
2478 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2479 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2480 mpeg4_encoder_select="h263_encoder"
2481 msa1_decoder_select="mss34dsp"
2482 msmpeg4v1_decoder_select="h263_decoder"
2483 msmpeg4v2_decoder_select="h263_decoder"
2484 msmpeg4v2_encoder_select="h263_encoder"
2485 msmpeg4v3_decoder_select="h263_decoder"
2486 msmpeg4v3_encoder_select="h263_encoder"
2487 mss2_decoder_select="vc1_decoder mpegvideo"
2488 mts2_decoder_select="mss34dsp"
2489 mxpeg_decoder_select="mjpeg_decoder"
2490 nellymoser_decoder_select="mdct sinewin"
2491 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2492 nuv_decoder_select="idctdsp lzo"
2493 on2avc_decoder_select="mdct"
2494 opus_decoder_deps="swresample"
2495 opus_decoder_select="mdct15"
2496 opus_encoder_select="audio_frame_queue mdct15"
2497 png_decoder_select="zlib"
2498 png_encoder_select="llvidencdsp zlib"
2499 prores_decoder_select="blockdsp idctdsp"
2500 prores_encoder_select="fdctdsp"
2501 qcelp_decoder_select="lsp"
2502 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2503 ra_144_decoder_select="audiodsp"
2504 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2505 ralf_decoder_select="golomb"
2506 rawvideo_decoder_select="bswapdsp"
2507 rscc_decoder_select="zlib"
2508 rtjpeg_decoder_select="me_cmp"
2509 rv10_decoder_select="h263_decoder"
2510 rv10_encoder_select="h263_encoder"
2511 rv20_decoder_select="h263_decoder"
2512 rv20_encoder_select="h263_encoder"
2513 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2514 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2515 screenpresso_decoder_select="zlib"
2516 shorten_decoder_select="golomb bswapdsp"
2517 sipr_decoder_select="lsp"
2518 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2519 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2520 sonic_decoder_select="golomb rangecoder"
2521 sonic_encoder_select="golomb rangecoder"
2522 sonic_ls_encoder_select="golomb rangecoder"
2523 sp5x_decoder_select="mjpeg_decoder"
2524 svq1_decoder_select="hpeldsp"
2525 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2526 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2527 svq3_decoder_suggest="zlib"
2528 tak_decoder_select="audiodsp"
2529 tdsc_decoder_select="zlib mjpeg_decoder"
2530 theora_decoder_select="vp3_decoder"
2531 thp_decoder_select="mjpeg_decoder"
2532 tiff_decoder_suggest="zlib lzma"
2533 tiff_encoder_suggest="zlib"
2534 truehd_decoder_select="mlp_parser"
2535 truemotion2_decoder_select="bswapdsp"
2536 truespeech_decoder_select="bswapdsp"
2537 tscc_decoder_select="zlib"
2538 twinvq_decoder_select="mdct lsp sinewin"
2539 txd_decoder_select="texturedsp"
2540 utvideo_decoder_select="bswapdsp llviddsp"
2541 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2542 vble_decoder_select="llviddsp"
2543 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2544 vc1_qsv_decoder_deps="libmfx"
2545 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2546 vc1image_decoder_select="vc1_decoder"
2547 vorbis_decoder_select="mdct"
2548 vorbis_encoder_select="mdct"
2549 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2550 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2551 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2552 vp6a_decoder_select="vp6_decoder"
2553 vp6f_decoder_select="vp6_decoder"
2554 vp7_decoder_select="h264pred videodsp vp8dsp"
2555 vp8_decoder_select="h264pred videodsp vp8dsp"
2556 vp9_decoder_select="videodsp vp9_parser"
2557 webp_decoder_select="vp8_decoder exif"
2558 wmalossless_decoder_select="llauddsp"
2559 wmapro_decoder_select="mdct sinewin wma_freqs"
2560 wmav1_decoder_select="mdct sinewin wma_freqs"
2561 wmav1_encoder_select="mdct sinewin wma_freqs"
2562 wmav2_decoder_select="mdct sinewin wma_freqs"
2563 wmav2_encoder_select="mdct sinewin wma_freqs"
2564 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2565 wmv1_decoder_select="h263_decoder"
2566 wmv1_encoder_select="h263_encoder"
2567 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2568 wmv2_encoder_select="h263_encoder wmv2dsp"
2569 wmv3_decoder_select="vc1_decoder"
2570 wmv3image_decoder_select="wmv3_decoder"
2571 xma1_decoder_select="wmapro_decoder"
2572 xma2_decoder_select="wmapro_decoder"
2573 zerocodec_decoder_select="zlib"
2574 zlib_decoder_select="zlib"
2575 zlib_encoder_select="zlib"
2576 zmbv_decoder_select="zlib"
2577 zmbv_encoder_select="zlib"
2578
2579 # platform codecs
2580 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2581 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2582
2583 # hardware accelerators
2584 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2585 cuda_deps_any="dlopen LoadLibrary"
2586 cuvid_deps="cuda"
2587 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2588 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2589 dxva2_extralibs="-luser32"
2590 vaapi_deps="va_va_h"
2591 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2592 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2593 vda_deps="vda_framework pthreads"
2594 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2595 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2596 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2597 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2598 xvmc_deps="X11_extensions_XvMClib_h"
2599
2600 h263_vaapi_hwaccel_deps="vaapi"
2601 h263_vaapi_hwaccel_select="h263_decoder"
2602 h263_videotoolbox_hwaccel_deps="videotoolbox"
2603 h263_videotoolbox_hwaccel_select="h263_decoder"
2604 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2605 h264_cuvid_hwaccel_deps="cuda cuvid"
2606 h264_d3d11va_hwaccel_deps="d3d11va"
2607 h264_d3d11va_hwaccel_select="h264_decoder"
2608 h264_dxva2_hwaccel_deps="dxva2"
2609 h264_dxva2_hwaccel_select="h264_decoder"
2610 h264_mediacodec_decoder_deps="mediacodec"
2611 h264_mediacodec_hwaccel_deps="mediacodec"
2612 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2613 h264_mmal_decoder_deps="mmal"
2614 h264_mmal_decoder_select="mmal"
2615 h264_mmal_hwaccel_deps="mmal"
2616 h264_omx_encoder_deps="omx"
2617 h264_qsv_hwaccel_deps="libmfx"
2618 h264_vaapi_hwaccel_deps="vaapi"
2619 h264_vaapi_hwaccel_select="h264_decoder"
2620 h264_vda_decoder_deps="vda"
2621 h264_vda_decoder_select="h264_decoder"
2622 h264_vda_hwaccel_deps="vda"
2623 h264_vda_hwaccel_select="h264_decoder"
2624 h264_vda_old_hwaccel_deps="vda"
2625 h264_vda_old_hwaccel_select="h264_decoder"
2626 h264_vdpau_decoder_deps="vdpau"
2627 h264_vdpau_decoder_select="h264_decoder"
2628 h264_vdpau_hwaccel_deps="vdpau"
2629 h264_vdpau_hwaccel_select="h264_decoder"
2630 h264_videotoolbox_hwaccel_deps="videotoolbox"
2631 h264_videotoolbox_hwaccel_select="h264_decoder"
2632 hevc_cuvid_hwaccel_deps="cuda cuvid"
2633 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2634 hevc_d3d11va_hwaccel_select="hevc_decoder"
2635 hevc_mediacodec_decoder_deps="mediacodec"
2636 hevc_mediacodec_hwaccel_deps="mediacodec"
2637 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2638 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2639 hevc_dxva2_hwaccel_select="hevc_decoder"
2640 hevc_qsv_hwaccel_deps="libmfx"
2641 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2642 hevc_vaapi_hwaccel_select="hevc_decoder"
2643 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2644 hevc_vdpau_hwaccel_select="hevc_decoder"
2645 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2646 mpeg_vdpau_decoder_deps="vdpau"
2647 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2648 mpeg_xvmc_hwaccel_deps="xvmc"
2649 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2650 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2651 mpeg1_vdpau_decoder_deps="vdpau"
2652 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2653 mpeg1_vdpau_hwaccel_deps="vdpau"
2654 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2655 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2656 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2657 mpeg1_xvmc_hwaccel_deps="xvmc"
2658 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2659 mpeg2_crystalhd_decoder_select="crystalhd"
2660 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2661 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2662 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2663 mpeg2_dxva2_hwaccel_deps="dxva2"
2664 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2665 mpeg2_mmal_decoder_deps="mmal"
2666 mpeg2_mmal_decoder_select="mmal"
2667 mpeg2_mmal_hwaccel_deps="mmal"
2668 mpeg2_qsv_hwaccel_deps="libmfx"
2669 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2670 mpeg2_vaapi_hwaccel_deps="vaapi"
2671 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2672 mpeg2_vdpau_hwaccel_deps="vdpau"
2673 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2674 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2675 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2676 mpeg2_xvmc_hwaccel_deps="xvmc"
2677 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2678 mpeg4_crystalhd_decoder_select="crystalhd"
2679 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2680 mpeg4_mediacodec_decoder_deps="mediacodec"
2681 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2682 mpeg4_mmal_decoder_deps="mmal"
2683 mpeg4_mmal_decoder_select="mmal"
2684 mpeg4_mmal_hwaccel_deps="mmal"
2685 mpeg4_omx_encoder_deps="omx"
2686 mpeg4_vaapi_hwaccel_deps="vaapi"
2687 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2688 mpeg4_vdpau_decoder_deps="vdpau"
2689 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2690 mpeg4_vdpau_hwaccel_deps="vdpau"
2691 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2692 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2693 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2694 msmpeg4_crystalhd_decoder_select="crystalhd"
2695 vc1_crystalhd_decoder_select="crystalhd"
2696 vc1_cuvid_hwaccel_deps="cuda cuvid"
2697 vc1_d3d11va_hwaccel_deps="d3d11va"
2698 vc1_d3d11va_hwaccel_select="vc1_decoder"
2699 vc1_dxva2_hwaccel_deps="dxva2"
2700 vc1_dxva2_hwaccel_select="vc1_decoder"
2701 vc1_mmal_decoder_deps="mmal"
2702 vc1_mmal_decoder_select="mmal"
2703 vc1_mmal_hwaccel_deps="mmal"
2704 vc1_qsv_hwaccel_deps="libmfx"
2705 vc1_qsv_hwaccel_select="qsvdec_vc1"
2706 vc1_vaapi_hwaccel_deps="vaapi"
2707 vc1_vaapi_hwaccel_select="vc1_decoder"
2708 vc1_vdpau_decoder_deps="vdpau"
2709 vc1_vdpau_decoder_select="vc1_decoder"
2710 vc1_vdpau_hwaccel_deps="vdpau"
2711 vc1_vdpau_hwaccel_select="vc1_decoder"
2712 vp8_cuvid_hwaccel_deps="cuda cuvid"
2713 vp9_cuvid_hwaccel_deps="cuda cuvid"
2714 vp8_mediacodec_decoder_deps="mediacodec"
2715 vp8_mediacodec_hwaccel_deps="mediacodec"
2716 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2717 vp9_d3d11va_hwaccel_select="vp9_decoder"
2718 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2719 vp9_dxva2_hwaccel_select="vp9_decoder"
2720 vp9_mediacodec_decoder_deps="mediacodec"
2721 vp9_mediacodec_hwaccel_deps="mediacodec"
2722 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2723 vp9_vaapi_hwaccel_select="vp9_decoder"
2724 wmv3_crystalhd_decoder_select="crystalhd"
2725 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2726 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2727 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2728 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2729 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2730
2731 # hardware-accelerated codecs
2732 omx_deps="dlopen pthreads"
2733 omx_extralibs='$ldl'
2734 qsvdec_select="qsv"
2735 qsvenc_select="qsv"
2736 vaapi_encode_deps="vaapi"
2737
2738 hwupload_cuda_filter_deps="cuda"
2739 scale_npp_filter_deps="cuda libnpp"
2740
2741 nvenc_deps="cuda"
2742 nvenc_deps_any="dlopen LoadLibrary"
2743 nvenc_encoder_deps="nvenc"
2744 h264_cuvid_decoder_deps="cuda cuvid"
2745 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2746 h264_nvenc_encoder_deps="nvenc"
2747 h264_qsv_decoder_deps="libmfx"
2748 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2749 h264_qsv_encoder_deps="libmfx"
2750 h264_qsv_encoder_select="qsvenc"
2751 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2752 h264_vaapi_encoder_select="vaapi_encode golomb"
2753
2754 hevc_cuvid_decoder_deps="cuda cuvid"
2755 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2756 hevc_nvenc_encoder_deps="nvenc"
2757 hevc_qsv_decoder_deps="libmfx"
2758 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2759 hevc_qsv_encoder_deps="libmfx"
2760 hevc_qsv_encoder_select="qsvenc"
2761 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2762 hevc_vaapi_encoder_select="vaapi_encode golomb"
2763 mjpeg_cuvid_decoder_deps="cuda cuvid"
2764 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2765 mpeg1_cuvid_decoder_deps="cuda cuvid"
2766 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2767 mpeg2_cuvid_decoder_deps="cuda cuvid"
2768 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2769 mpeg2_qsv_decoder_deps="libmfx"
2770 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2771 mpeg2_qsv_encoder_deps="libmfx"
2772 mpeg2_qsv_encoder_select="qsvenc"
2773 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2774 mpeg2_vaapi_encoder_select="vaapi_encode"
2775 mpeg4_cuvid_decoder_deps="cuda cuvid"
2776 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2777 nvenc_h264_encoder_deps="nvenc"
2778 nvenc_hevc_encoder_deps="nvenc"
2779
2780 vc1_cuvid_decoder_deps="cuda cuvid"
2781 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2782 vp8_cuvid_decoder_deps="cuda cuvid"
2783 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2784 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2785 vp8_vaapi_encoder_select="vaapi_encode"
2786 vp9_cuvid_decoder_deps="cuda cuvid"
2787 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2788
2789 # parsers
2790 h264_parser_select="golomb h264dsp h264parse"
2791 hevc_parser_select="golomb"
2792 mpegvideo_parser_select="mpegvideo"
2793 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2794 vc1_parser_select="vc1dsp"
2795
2796 # bitstream_filters
2797 mjpeg2jpeg_bsf_select="jpegtables"
2798
2799 # external libraries
2800 aac_at_decoder_deps="audiotoolbox"
2801 ac3_at_decoder_deps="audiotoolbox"
2802 ac3_at_decoder_select="ac3_parser"
2803 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2804 alac_at_decoder_deps="audiotoolbox"
2805 amr_nb_at_decoder_deps="audiotoolbox"
2806 avisynth_deps_any="dlopen LoadLibrary"
2807 avisynth_demuxer_deps="avisynth"
2808 avisynth_demuxer_select="riffdec"
2809 eac3_at_decoder_deps="audiotoolbox"
2810 eac3_at_decoder_select="ac3_parser"
2811 gsm_ms_at_decoder_deps="audiotoolbox"
2812 ilbc_at_decoder_deps="audiotoolbox"
2813 mp1_at_decoder_deps="audiotoolbox"
2814 mp2_at_decoder_deps="audiotoolbox"
2815 mp3_at_decoder_deps="audiotoolbox"
2816 pcm_alaw_at_decoder_deps="audiotoolbox"
2817 pcm_mulaw_at_decoder_deps="audiotoolbox"
2818 qdmc_at_decoder_deps="audiotoolbox"
2819 qdm2_at_decoder_deps="audiotoolbox"
2820 aac_at_encoder_deps="audiotoolbox"
2821 aac_at_encoder_select="audio_frame_queue"
2822 alac_at_encoder_deps="audiotoolbox"
2823 alac_at_encoder_select="audio_frame_queue"
2824 ilbc_at_encoder_deps="audiotoolbox"
2825 ilbc_at_encoder_select="audio_frame_queue"
2826 pcm_alaw_at_encoder_deps="audiotoolbox"
2827 pcm_alaw_at_encoder_select="audio_frame_queue"
2828 pcm_mulaw_at_encoder_deps="audiotoolbox"
2829 pcm_mulaw_at_encoder_select="audio_frame_queue"
2830 chromaprint_muxer_deps="chromaprint"
2831 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2832 libcelt_decoder_deps="libcelt"
2833 libfdk_aac_decoder_deps="libfdk_aac"
2834 libfdk_aac_encoder_deps="libfdk_aac"
2835 libfdk_aac_encoder_select="audio_frame_queue"
2836 libgme_demuxer_deps="libgme"
2837 libgsm_decoder_deps="libgsm"
2838 libgsm_encoder_deps="libgsm"
2839 libgsm_ms_decoder_deps="libgsm"
2840 libgsm_ms_encoder_deps="libgsm"
2841 libilbc_decoder_deps="libilbc"
2842 libilbc_encoder_deps="libilbc"
2843 libkvazaar_encoder_deps="libkvazaar"
2844 libmodplug_demuxer_deps="libmodplug"
2845 libmp3lame_encoder_deps="libmp3lame"
2846 libmp3lame_encoder_select="audio_frame_queue"
2847 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2848 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2849 libopencore_amrnb_encoder_select="audio_frame_queue"
2850 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2851 libopenh264_decoder_deps="libopenh264"
2852 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2853 libopenh264_encoder_deps="libopenh264"
2854 libopenjpeg_decoder_deps="libopenjpeg"
2855 libopenjpeg_encoder_deps="libopenjpeg"
2856 libopenmpt_demuxer_deps="libopenmpt"
2857 libopus_decoder_deps="libopus"
2858 libopus_encoder_deps="libopus"
2859 libopus_encoder_select="audio_frame_queue"
2860 libschroedinger_decoder_deps="libschroedinger"
2861 libschroedinger_encoder_deps="libschroedinger"
2862 libshine_encoder_deps="libshine"
2863 libshine_encoder_select="audio_frame_queue"
2864 libspeex_decoder_deps="libspeex"
2865 libspeex_encoder_deps="libspeex"
2866 libspeex_encoder_select="audio_frame_queue"
2867 libtheora_encoder_deps="libtheora"
2868 libtwolame_encoder_deps="libtwolame"
2869 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2870 libvorbis_decoder_deps="libvorbis"
2871 libvorbis_encoder_deps="libvorbis"
2872 libvorbis_encoder_select="audio_frame_queue"
2873 libvpx_vp8_decoder_deps="libvpx"
2874 libvpx_vp8_encoder_deps="libvpx"
2875 libvpx_vp9_decoder_deps="libvpx"
2876 libvpx_vp9_encoder_deps="libvpx"
2877 libwavpack_encoder_deps="libwavpack"
2878 libwebp_encoder_deps="libwebp"
2879 libwebp_anim_encoder_deps="libwebp"
2880 libx262_encoder_deps="libx262"
2881 libx264_encoder_deps="libx264"
2882 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2883 libx264rgb_encoder_select="libx264_encoder"
2884 libx265_encoder_deps="libx265"
2885 libxavs_encoder_deps="libxavs"
2886 libxvid_encoder_deps="libxvid"
2887 libzvbi_teletext_decoder_deps="libzvbi"
2888 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2889 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2890 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2891 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2892 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2893
2894 # demuxers / muxers
2895 ac3_demuxer_select="ac3_parser"
2896 aiff_muxer_select="iso_media"
2897 asf_demuxer_select="riffdec"
2898 asf_o_demuxer_select="riffdec"
2899 asf_muxer_select="riffenc"
2900 asf_stream_muxer_select="asf_muxer"
2901 avi_demuxer_select="iso_media riffdec exif"
2902 avi_muxer_select="riffenc"
2903 caf_demuxer_select="iso_media riffdec"
2904 caf_muxer_select="iso_media"
2905 dash_muxer_select="mp4_muxer"
2906 dirac_demuxer_select="dirac_parser"
2907 dts_demuxer_select="dca_parser"
2908 dtshd_demuxer_select="dca_parser"
2909 dv_demuxer_select="dvprofile"
2910 dv_muxer_select="dvprofile"
2911 dxa_demuxer_select="riffdec"
2912 eac3_demuxer_select="ac3_parser"
2913 f4v_muxer_select="mov_muxer"
2914 fifo_muxer_deps="threads"
2915 flac_demuxer_select="flac_parser"
2916 hds_muxer_select="flv_muxer"
2917 hls_muxer_select="mpegts_muxer"
2918 image2_alias_pix_demuxer_select="image2_demuxer"
2919 image2_brender_pix_demuxer_select="image2_demuxer"
2920 ipod_muxer_select="mov_muxer"
2921 ismv_muxer_select="mov_muxer"
2922 libnut_demuxer_deps="libnut"
2923 libnut_muxer_deps="libnut"
2924 matroska_audio_muxer_select="matroska_muxer"
2925 matroska_demuxer_select="iso_media riffdec"
2926 matroska_demuxer_suggest="bzlib lzo zlib"
2927 matroska_muxer_select="iso_media riffenc"
2928 mmf_muxer_select="riffenc"
2929 mov_demuxer_select="iso_media riffdec"
2930 mov_demuxer_suggest="zlib"
2931 mov_muxer_select="iso_media riffenc rtpenc_chain"
2932 mp3_demuxer_select="mpegaudio_parser"
2933 mp4_muxer_select="mov_muxer"
2934 mpegts_demuxer_select="iso_media"
2935 mpegts_muxer_select="adts_muxer latm_muxer"
2936 mpegtsraw_demuxer_select="mpegts_demuxer"
2937 mxf_d10_muxer_select="mxf_muxer"
2938 mxf_opatom_muxer_select="mxf_muxer"
2939 nut_muxer_select="riffenc"
2940 nuv_demuxer_select="riffdec"
2941 oga_muxer_select="ogg_muxer"
2942 ogg_demuxer_select="dirac_parse"
2943 ogv_muxer_select="ogg_muxer"
2944 opus_muxer_select="ogg_muxer"
2945 psp_muxer_select="mov_muxer"
2946 rtp_demuxer_select="sdp_demuxer"
2947 rtp_muxer_select="golomb"
2948 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2949 rtsp_demuxer_select="http_protocol rtpdec"
2950 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2951 sap_demuxer_select="sdp_demuxer"
2952 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2953 sdp_demuxer_select="rtpdec"
2954 smoothstreaming_muxer_select="ismv_muxer"
2955 spdif_muxer_select="aac_parser"
2956 spx_muxer_select="ogg_muxer"
2957 swf_demuxer_suggest="zlib"
2958 tak_demuxer_select="tak_parser"
2959 tg2_muxer_select="mov_muxer"
2960 tgp_muxer_select="mov_muxer"
2961 vobsub_demuxer_select="mpegps_demuxer"
2962 w64_demuxer_select="wav_demuxer"
2963 w64_muxer_select="wav_muxer"
2964 wav_demuxer_select="riffdec"
2965 wav_muxer_select="riffenc"
2966 webm_muxer_select="iso_media riffenc"
2967 webm_dash_manifest_demuxer_select="matroska_demuxer"
2968 wtv_demuxer_select="mpegts_demuxer riffdec"
2969 wtv_muxer_select="mpegts_muxer riffenc"
2970 xmv_demuxer_select="riffdec"
2971 xwma_demuxer_select="riffdec"
2972
2973 # indevs / outdevs
2974 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2975 alsa_outdev_deps="alsa_asoundlib_h"
2976 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2977 avfoundation_indev_select="avfoundation"
2978 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2979 caca_outdev_deps="libcaca"
2980 decklink_indev_deps="decklink pthreads"
2981 decklink_indev_extralibs="-lstdc++"
2982 decklink_outdev_deps="decklink pthreads"
2983 decklink_outdev_extralibs="-lstdc++"
2984 dshow_indev_deps="IBaseFilter"
2985 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2986 dv1394_indev_deps="dv1394"
2987 dv1394_indev_select="dv_demuxer"
2988 fbdev_indev_deps="linux_fb_h"
2989 fbdev_outdev_deps="linux_fb_h"
2990 gdigrab_indev_deps="CreateDIBSection"
2991 gdigrab_indev_extralibs="-lgdi32"
2992 gdigrab_indev_select="bmp_decoder"
2993 iec61883_indev_deps="libiec61883"
2994 jack_indev_deps="jack_jack_h"
2995 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2996 lavfi_indev_deps="avfilter"
2997 libcdio_indev_deps="libcdio"
2998 libdc1394_indev_deps="libdc1394"
2999 libv4l2_indev_deps="libv4l2"
3000 openal_indev_deps="openal"
3001 opengl_outdev_deps="opengl"
3002 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3003 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3004 pulse_indev_deps="libpulse"
3005 pulse_outdev_deps="libpulse"
3006 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3007 qtkit_indev_select="qtkit"
3008 sdl2_outdev_deps="sdl2"
3009 sndio_indev_deps="sndio_h"
3010 sndio_outdev_deps="sndio_h"
3011 v4l_indev_deps="linux_videodev_h"
3012 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3013 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3014 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3015 vfwcap_indev_extralibs="-lavicap32"
3016 x11grab_indev_deps="x11grab"
3017 x11grab_xcb_indev_deps="libxcb"
3018 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3019 xv_outdev_extralibs="-lXv -lX11 -lXext"
3020
3021 # protocols
3022 async_protocol_deps="threads"
3023 bluray_protocol_deps="libbluray"
3024 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3025 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3026 ffrtmpcrypt_protocol_select="tcp_protocol"
3027 ffrtmphttp_protocol_deps="!librtmp_protocol"
3028 ffrtmphttp_protocol_select="http_protocol"
3029 ftp_protocol_select="tcp_protocol"
3030 gopher_protocol_select="network"
3031 http_protocol_select="tcp_protocol"
3032 httpproxy_protocol_select="tcp_protocol"
3033 https_protocol_select="tls_protocol"
3034 icecast_protocol_select="http_protocol"
3035 librtmp_protocol_deps="librtmp"
3036 librtmpe_protocol_deps="librtmp"
3037 librtmps_protocol_deps="librtmp"
3038 librtmpt_protocol_deps="librtmp"
3039 librtmpte_protocol_deps="librtmp"
3040 libsmbclient_protocol_deps="libsmbclient gplv3"
3041 libssh_protocol_deps="libssh"
3042 mmsh_protocol_select="http_protocol"
3043 mmst_protocol_select="network"
3044 rtmp_protocol_deps="!librtmp_protocol"
3045 rtmp_protocol_select="tcp_protocol"
3046 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3047 rtmps_protocol_deps="!librtmp_protocol"
3048 rtmps_protocol_select="tls_protocol"
3049 rtmpt_protocol_select="ffrtmphttp_protocol"
3050 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3051 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3052 rtp_protocol_select="udp_protocol"
3053 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3054 sctp_protocol_select="network"
3055 srtp_protocol_select="rtp_protocol srtp"
3056 tcp_protocol_select="network"
3057 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3058 tls_gnutls_protocol_select="tcp_protocol"
3059 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3060 tls_openssl_protocol_select="tcp_protocol"
3061 tls_schannel_protocol_deps="schannel"
3062 tls_schannel_protocol_select="tcp_protocol"
3063 tls_securetransport_protocol_deps="securetransport"
3064 tls_securetransport_protocol_select="tcp_protocol"
3065 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3066 udp_protocol_select="network"
3067 udplite_protocol_select="network"
3068 unix_protocol_deps="sys_un_h"
3069 unix_protocol_select="network"
3070
3071 # filters
3072 afftfilt_filter_deps="avcodec"
3073 afftfilt_filter_select="fft"
3074 amovie_filter_deps="avcodec avformat"
3075 aresample_filter_deps="swresample"
3076 ass_filter_deps="libass"
3077 asyncts_filter_deps="avresample"
3078 atempo_filter_deps="avcodec"
3079 atempo_filter_select="rdft"
3080 azmq_filter_deps="libzmq"
3081 blackframe_filter_deps="gpl"
3082 boxblur_filter_deps="gpl"
3083 bs2b_filter_deps="libbs2b"
3084 colormatrix_filter_deps="gpl"
3085 cover_rect_filter_deps="avcodec avformat gpl"
3086 cropdetect_filter_deps="gpl"
3087 deinterlace_vaapi_filter_deps="vaapi"
3088 delogo_filter_deps="gpl"
3089 deshake_filter_select="pixelutils"
3090 drawtext_filter_deps="libfreetype"
3091 eq_filter_deps="gpl"
3092 fftfilt_filter_deps="avcodec"
3093 fftfilt_filter_select="rdft"
3094 find_rect_filter_deps="avcodec avformat gpl"
3095 firequalizer_filter_deps="avcodec"
3096 firequalizer_filter_select="rdft"
3097 flite_filter_deps="libflite"
3098 framerate_filter_select="pixelutils"
3099 frei0r_filter_deps="frei0r dlopen"
3100 frei0r_src_filter_deps="frei0r dlopen"
3101 fspp_filter_deps="gpl"
3102 geq_filter_deps="gpl"
3103 histeq_filter_deps="gpl"
3104 hqdn3d_filter_deps="gpl"
3105 interlace_filter_deps="gpl"
3106 kerndeint_filter_deps="gpl"
3107 ladspa_filter_deps="ladspa dlopen"
3108 mcdeint_filter_deps="avcodec gpl"
3109 movie_filter_deps="avcodec avformat"
3110 mpdecimate_filter_deps="gpl"
3111 mpdecimate_filter_select="pixelutils"
3112 mptestsrc_filter_deps="gpl"
3113 negate_filter_deps="lut_filter"
3114 nnedi_filter_deps="gpl"
3115 ocr_filter_deps="libtesseract"
3116 ocv_filter_deps="libopencv"
3117 owdenoise_filter_deps="gpl"
3118 pan_filter_deps="swresample"
3119 perspective_filter_deps="gpl"
3120 phase_filter_deps="gpl"
3121 pp7_filter_deps="gpl"
3122 pp_filter_deps="gpl postproc"
3123 pullup_filter_deps="gpl"
3124 removelogo_filter_deps="avcodec avformat swscale"
3125 repeatfields_filter_deps="gpl"
3126 resample_filter_deps="avresample"
3127 rubberband_filter_deps="librubberband"
3128 sab_filter_deps="gpl swscale"
3129 scale2ref_filter_deps="swscale"
3130 scale_filter_deps="swscale"
3131 select_filter_select="pixelutils"
3132 showcqt_filter_deps="avcodec avformat swscale"
3133 showcqt_filter_select="fft"
3134 showfreqs_filter_deps="avcodec"
3135 showfreqs_filter_select="fft"
3136 showspectrum_filter_deps="avcodec"
3137 showspectrum_filter_select="fft"
3138 showspectrumpic_filter_deps="avcodec"
3139 showspectrumpic_filter_select="fft"
3140 smartblur_filter_deps="gpl swscale"
3141 sofalizer_filter_deps="netcdf avcodec"
3142 sofalizer_filter_select="fft"
3143 spectrumsynth_filter_deps="avcodec"
3144 spectrumsynth_filter_select="fft"
3145 spp_filter_deps="gpl avcodec"
3146 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3147 stereo3d_filter_deps="gpl"
3148 subtitles_filter_deps="avformat avcodec libass"
3149 super2xsai_filter_deps="gpl"
3150 pixfmts_super2xsai_test_deps="super2xsai_filter"
3151 tinterlace_filter_deps="gpl"
3152 tinterlace_merge_test_deps="tinterlace_filter"
3153 tinterlace_pad_test_deps="tinterlace_filter"
3154 uspp_filter_deps="gpl avcodec"
3155 vaguedenoiser_filter_deps="gpl"
3156 vidstabdetect_filter_deps="libvidstab"
3157 vidstabtransform_filter_deps="libvidstab"
3158 zmq_filter_deps="libzmq"
3159 zoompan_filter_deps="swscale"
3160 zscale_filter_deps="libzimg"
3161 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3162
3163 # examples
3164 avio_dir_cmd_deps="avformat avutil"
3165 avio_reading_deps="avformat avcodec avutil"
3166 decoding_encoding_example_deps="avcodec avformat avutil"
3167 demuxing_decoding_example_deps="avcodec avformat avutil"
3168 extract_mvs_example_deps="avcodec avformat avutil"
3169 filter_audio_example_deps="avfilter avutil"
3170 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3171 filtering_video_example_deps="avfilter avcodec avformat avutil"
3172 http_multiclient_example_deps="avformat avutil fork"
3173 metadata_example_deps="avformat avutil"
3174 muxing_example_deps="avcodec avformat avutil swscale"
3175 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3176 remuxing_example_deps="avcodec avformat avutil"
3177 resampling_audio_example_deps="avutil swresample"
3178 scaling_video_example_deps="avutil swscale"
3179 transcode_aac_example_deps="avcodec avformat swresample"
3180 transcoding_example_deps="avfilter avcodec avformat avutil"
3181
3182 # libraries, in linking order
3183 avcodec_deps="avutil"
3184 avdevice_deps="avformat avcodec avutil"
3185 avfilter_deps="avutil"
3186 avformat_deps="avcodec avutil"
3187 avresample_deps="avutil"
3188 postproc_deps="avutil gpl"
3189 swresample_deps="avutil"
3190 swscale_deps="avutil"
3191
3192 # programs
3193 ffmpeg_deps="avcodec avfilter avformat swresample"
3194 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3195                null_filter
3196                setpts_filter trim_filter"
3197 ffplay_deps="avcodec avformat swscale swresample sdl2"
3198 ffplay_libs='$sdl2_libs'
3199 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3200 ffprobe_deps="avcodec avformat"
3201 ffserver_deps="avformat fork sarestart"
3202 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3203
3204 # documentation
3205 podpages_deps="perl"
3206 manpages_deps="perl pod2man"
3207 htmlpages_deps="perl"
3208 htmlpages_deps_any="makeinfo_html texi2html"
3209 txtpages_deps="perl makeinfo"
3210 doc_deps_any="manpages htmlpages podpages txtpages"
3211
3212 # default parameters
3213
3214 logfile="config.log"
3215
3216 # installation paths
3217 prefix_default="/usr/local"
3218 bindir_default='${prefix}/bin'
3219 datadir_default='${prefix}/share/ffmpeg'
3220 docdir_default='${prefix}/share/doc/ffmpeg'
3221 incdir_default='${prefix}/include'
3222 libdir_default='${prefix}/lib'
3223 mandir_default='${prefix}/share/man'
3224
3225 # toolchain
3226 ar_default="ar"
3227 cc_default="gcc"
3228 cxx_default="g++"
3229 host_cc_default="gcc"
3230 cp_f="cp -f"
3231 doxygen_default="doxygen"
3232 install="install"
3233 ln_s_default="ln -s -f"
3234 nm_default="nm -g"
3235 objformat="elf"
3236 pkg_config_default=pkg-config
3237 ranlib_default="ranlib"
3238 strip_default="strip"
3239 version_script='--version-script'
3240 yasmexe_default="yasm"
3241 windres_default="windres"
3242
3243 # OS
3244 target_os_default=$(tolower $(uname -s))
3245 host_os=$target_os_default
3246
3247 # machine
3248 if test "$target_os_default" = aix; then
3249     arch_default=$(uname -p)
3250     strip_default="strip -X32_64"
3251 else
3252     arch_default=$(uname -m)
3253 fi
3254 cpu="generic"
3255 intrinsics="none"
3256
3257 # configurable options
3258 enable $PROGRAM_LIST
3259 enable $DOCUMENT_LIST
3260 enable $EXAMPLE_LIST
3261 enable $(filter_out avresample $LIBRARY_LIST)
3262 enable stripping
3263
3264 enable asm
3265 enable debug
3266 enable doc
3267 enable faan faandct faanidct
3268 enable optimizations
3269 enable runtime_cpudetect
3270 enable safe_bitstream_reader
3271 enable static
3272 enable swscale_alpha
3273 enable valgrind_backtrace
3274
3275 sws_max_filter_size_default=256
3276 set_default sws_max_filter_size
3277
3278 # build settings
3279 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3280 LIBPREF="lib"
3281 LIBSUF=".a"
3282 FULLNAME='$(NAME)$(BUILDSUF)'
3283 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3284 SLIBPREF="lib"
3285 SLIBSUF=".so"
3286 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3287 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3288 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3289 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3290 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3291 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3292 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3293
3294 asflags_filter=echo
3295 cflags_filter=echo
3296 ldflags_filter=echo
3297
3298 AS_C='-c'
3299 AS_O='-o $@'
3300 CC_C='-c'
3301 CC_E='-E -o $@'
3302 CC_O='-o $@'
3303 CXX_C='-c'
3304 CXX_O='-o $@'
3305 OBJCC_C='-c'
3306 OBJCC_E='-E -o $@'
3307 OBJCC_O='-o $@'
3308 LD_O='-o $@'
3309 LD_LIB='-l%'
3310 LD_PATH='-L'
3311 HOSTCC_C='-c'
3312 HOSTCC_E='-E -o $@'
3313 HOSTCC_O='-o $@'
3314 HOSTLD_O='-o $@'
3315
3316 host_libs='-lm'
3317 host_cflags_filter=echo
3318 host_ldflags_filter=echo
3319
3320 target_path='$(CURDIR)'
3321
3322 # since the object filename is not given with the -MM flag, the compiler
3323 # is only able to print the basename, and we must add the path ourselves
3324 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3325 DEPFLAGS='-MM'
3326
3327 # find source path
3328 if test -f configure; then
3329     source_path=.
3330 else
3331     source_path=$(cd $(dirname "$0"); pwd)
3332     case "$source_path" in
3333         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3334     esac
3335     test -e "$source_path/config.h" &&
3336         die "Out of tree builds are impossible with config.h in source dir."
3337 fi
3338
3339 for v in "$@"; do
3340     r=${v#*=}
3341     l=${v%"$r"}
3342     r=$(sh_quote "$r")
3343     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3344 done
3345
3346 find_things(){
3347     thing=$1
3348     pattern=$2
3349     file=$source_path/$3
3350     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3351 }
3352
3353 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3354 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3355 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3356 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3357 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3358 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3359 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3360 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3361 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3362
3363 find_things_extern(){
3364     thing=$1
3365     pattern=$2
3366     file=$source_path/$3
3367     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3368 }
3369
3370 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3371 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3372
3373 ALL_COMPONENTS="
3374     $BSF_LIST
3375     $DECODER_LIST
3376     $DEMUXER_LIST
3377     $ENCODER_LIST
3378     $FILTER_LIST
3379     $HWACCEL_LIST
3380     $INDEV_LIST
3381     $MUXER_LIST
3382     $OUTDEV_LIST
3383     $PARSER_LIST
3384     $PROTOCOL_LIST
3385 "
3386
3387 for n in $COMPONENT_LIST; do
3388     v=$(toupper ${n%s})_LIST
3389     eval enable \$$v
3390     eval ${n}_if_any="\$$v"
3391 done
3392
3393 enable $ARCH_EXT_LIST
3394
3395 die_unknown(){
3396     echo "Unknown option \"$1\"."
3397     echo "See $0 --help for available options."
3398     exit 1
3399 }
3400
3401 print_in_columns() {
3402     cols=$(expr $ncols / 24)
3403     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3404 }
3405
3406 show_list() {
3407     suffix=_$1
3408     shift
3409     echo $* | sed s/$suffix//g | print_in_columns
3410     exit 0
3411 }
3412
3413 rand_list(){
3414     IFS=', '
3415     set -- $*
3416     unset IFS
3417     for thing; do
3418         comp=${thing%:*}
3419         prob=${thing#$comp}
3420         prob=${prob#:}
3421         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3422         echo "prob ${prob:-0.5}"
3423         printf '%s\n' $comp
3424     done
3425 }
3426
3427 do_random(){
3428     action=$1
3429     shift
3430     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3431     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3432 }
3433
3434 for opt do
3435     optval="${opt#*=}"
3436     case "$opt" in
3437         --extra-ldflags=*)
3438             add_ldflags $optval
3439         ;;
3440         --extra-ldexeflags=*)
3441             add_ldexeflags $optval
3442         ;;
3443         --extra-ldlibflags=*)
3444             add_ldlibflags $optval
3445         ;;
3446         --extra-libs=*)
3447             add_extralibs $optval
3448         ;;
3449         --disable-devices)
3450             disable $INDEV_LIST $OUTDEV_LIST
3451         ;;
3452         --enable-debug=*)
3453             debuglevel="$optval"
3454         ;;
3455         --disable-programs)
3456             disable $PROGRAM_LIST
3457         ;;
3458         --disable-everything)
3459             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3460         ;;
3461         --disable-all)
3462             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3463             disable $LIBRARY_LIST $PROGRAM_LIST doc
3464             enable avutil
3465         ;;
3466         --enable-random|--disable-random)
3467             action=${opt%%-random}
3468             do_random ${action#--} $COMPONENT_LIST
3469         ;;
3470         --enable-random=*|--disable-random=*)
3471             action=${opt%%-random=*}
3472             do_random ${action#--} $optval
3473         ;;
3474         --enable-*=*|--disable-*=*)
3475             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3476             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3477             eval list=\$$(toupper $thing)_LIST
3478             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3479             list=$(filter "$name" $list)
3480             [ "$list" = "" ] && warn "Option $opt did not match anything"
3481             $action $list
3482         ;;
3483         --enable-?*|--disable-?*)
3484             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3485             if is_in $option $COMPONENT_LIST; then
3486                 test $action = disable && action=unset
3487                 eval $action \$$(toupper ${option%s})_LIST
3488             elif is_in $option $CMDLINE_SELECT; then
3489                 $action $option
3490             else
3491                 die_unknown $opt
3492             fi
3493         ;;
3494         --list-*)
3495             NAME="${opt#--list-}"
3496             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3497             NAME=${NAME%s}
3498             eval show_list $NAME \$$(toupper $NAME)_LIST
3499         ;;
3500         --help|-h) show_help
3501         ;;
3502         --fatal-warnings) enable fatal_warnings
3503         ;;
3504         *)
3505             optname="${opt%%=*}"
3506             optname="${optname#--}"
3507             optname=$(echo "$optname" | sed 's/-/_/g')
3508             if is_in $optname $CMDLINE_SET; then
3509                 eval $optname='$optval'
3510             elif is_in $optname $CMDLINE_APPEND; then
3511                 append $optname "$optval"
3512             else
3513                 die_unknown $opt
3514             fi
3515         ;;
3516     esac
3517 done
3518
3519 for e in $env; do
3520     eval "export $e"
3521 done
3522
3523 # Mark specifically enabled, but normally autodetected libraries as requested.
3524 for lib in $AUTODETECT_LIBS; do
3525     enabled $lib && request $lib
3526 done
3527
3528 # Enable platform codecs by default.
3529 enable_weak audiotoolbox
3530
3531 # Enable hwaccels by default.
3532 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3533 enable_weak xlib
3534
3535 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3536
3537 disabled logging && logfile=/dev/null
3538
3539 # Disable all the library-specific components if the library itself
3540 # is disabled, see AVCODEC_LIST and following _LIST variables.
3541
3542 disable_components(){
3543     disabled ${1} && disable $(
3544         eval components="\$$(toupper ${1})_COMPONENTS"
3545         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3546     )
3547 }
3548
3549 map 'disable_components $v' $LIBRARY_LIST
3550
3551 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3552 set >> $logfile
3553
3554 test -n "$valgrind" && toolchain="valgrind-memcheck"
3555
3556 case "$toolchain" in
3557     *-asan)
3558         cc_default="${toolchain%-asan}"
3559         add_cflags  -fsanitize=address
3560         add_ldflags -fsanitize=address
3561     ;;
3562     *-msan)
3563         cc_default="${toolchain%-msan}"
3564         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3565         add_ldflags -fsanitize=memory
3566     ;;
3567     *-tsan)
3568         cc_default="${toolchain%-tsan}"
3569         add_cflags  -fsanitize=thread -fPIE
3570         add_ldflags -fsanitize=thread -pie
3571         case "$toolchain" in
3572             gcc-tsan)
3573                 add_cflags  -fPIC
3574                 add_ldflags -fPIC
3575                 ;;
3576         esac
3577     ;;
3578     *-usan)
3579         cc_default="${toolchain%-usan}"
3580         add_cflags  -fsanitize=undefined
3581         add_ldflags -fsanitize=undefined
3582     ;;
3583     valgrind-*)
3584         target_exec_default="valgrind"
3585         case "$toolchain" in
3586             valgrind-massif)
3587                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3588                 ;;
3589             valgrind-memcheck)
3590                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3591                 ;;
3592         esac
3593     ;;
3594     msvc)
3595         # Check whether the current MSVC version needs the C99 converter.
3596         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3597         # support enough of C99 to build ffmpeg. Default to the new
3598         # behaviour if the regexp was unable to match anything, since this
3599         # successfully parses the version number of existing supported
3600         # versions that require the converter (MSVC 2010 and 2012).
3601         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3602         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3603             cc_default="cl"
3604         else
3605             cc_default="c99wrap cl"
3606         fi
3607         ld_default="$source_path/compat/windows/mslink"
3608         nm_default="dumpbin -symbols"
3609         ar_default="lib"
3610         case "$arch" in
3611         arm*)
3612             as_default="armasm"
3613             ;;
3614         esac
3615         target_os_default="win32"
3616         # Use a relative path for TMPDIR. This makes sure all the
3617         # ffconf temp files are written with a relative path, avoiding
3618         # issues with msys/win32 path conversion for MSVC parameters
3619         # such as -Fo<file> or -out:<file>.
3620         TMPDIR=.
3621     ;;
3622     icl)
3623         cc_default="icl"
3624         ld_default="xilink"
3625         nm_default="dumpbin -symbols"
3626         ar_default="xilib"
3627         target_os_default="win32"
3628         TMPDIR=.
3629     ;;
3630     gcov)
3631         add_cflags  -fprofile-arcs -ftest-coverage
3632         add_ldflags -fprofile-arcs -ftest-coverage
3633     ;;
3634     llvm-cov)
3635         add_cflags -fprofile-arcs -ftest-coverage
3636         add_ldflags --coverage
3637     ;;
3638     hardened)
3639         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3640         add_cflags   -fno-strict-overflow -fstack-protector-all
3641         add_ldflags  -Wl,-z,relro -Wl,-z,now
3642         add_cflags   -fPIE
3643         add_ldexeflags -fPIE -pie
3644     ;;
3645     ?*)
3646         die "Unknown toolchain $toolchain"
3647     ;;
3648 esac
3649
3650 test -n "$cross_prefix" && enable cross_compile
3651
3652 if enabled cross_compile; then
3653     test -n "$arch" && test -n "$target_os" ||
3654         die "Must specify target arch and OS when cross-compiling"
3655 fi
3656
3657 ar_default="${cross_prefix}${ar_default}"
3658 cc_default="${cross_prefix}${cc_default}"
3659 cxx_default="${cross_prefix}${cxx_default}"
3660 nm_default="${cross_prefix}${nm_default}"
3661 pkg_config_default="${cross_prefix}${pkg_config_default}"
3662 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3663     ranlib_default="${cross_prefix}${ranlib_default} -D"
3664 else
3665     ranlib_default="${cross_prefix}${ranlib_default}"
3666 fi
3667 strip_default="${cross_prefix}${strip_default}"
3668 windres_default="${cross_prefix}${windres_default}"
3669
3670 sysinclude_default="${sysroot}/usr/include"
3671
3672 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3673     target_exec target_os yasmexe
3674 enabled cross_compile || host_cc_default=$cc
3675 set_default host_cc
3676
3677 pkg_config_fail_message=""
3678 if ! $pkg_config --version >/dev/null 2>&1; then
3679     warn "$pkg_config not found, library detection may fail."
3680     pkg_config=false
3681 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3682     pkg_config_fail_message="
3683 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3684 fi
3685
3686 if test $doxygen != $doxygen_default && \
3687   ! $doxygen --version >/dev/null 2>&1; then
3688     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3689 fi
3690
3691 exesuf() {
3692     case $1 in
3693         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3694     esac
3695 }
3696
3697 EXESUF=$(exesuf $target_os)
3698 HOSTEXESUF=$(exesuf $host_os)
3699
3700 # set temporary file name
3701 : ${TMPDIR:=$TEMPDIR}
3702 : ${TMPDIR:=$TMP}
3703 : ${TMPDIR:=/tmp}
3704
3705 if [ -n "$tempprefix" ] ; then
3706     mktemp(){
3707         echo $tempprefix.${HOSTNAME}.${UID}
3708     }
3709 elif ! check_cmd mktemp -u XXXXXX; then
3710     # simple replacement for missing mktemp
3711     # NOT SAFE FOR GENERAL USE
3712     mktemp(){
3713         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3714     }
3715 fi
3716
3717 tmpfile(){
3718     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3719         (set -C; exec > $tmp) 2>/dev/null ||
3720         die "Unable to create temporary file in $TMPDIR."
3721     append TMPFILES $tmp
3722     eval $1=$tmp
3723 }
3724
3725 trap 'rm -f -- $TMPFILES' EXIT
3726
3727 tmpfile TMPASM .asm
3728 tmpfile TMPC   .c
3729 tmpfile TMPCPP .cpp
3730 tmpfile TMPE   $EXESUF
3731 tmpfile TMPH   .h
3732 tmpfile TMPM   .m
3733 tmpfile TMPO   .o
3734 tmpfile TMPS   .S
3735 tmpfile TMPSH  .sh
3736 tmpfile TMPV   .ver
3737
3738 unset -f mktemp
3739
3740 chmod +x $TMPE
3741
3742 # make sure we can execute files in $TMPDIR
3743 cat > $TMPSH 2>> $logfile <<EOF
3744 #! /bin/sh
3745 EOF
3746 chmod +x $TMPSH >> $logfile 2>&1
3747 if ! $TMPSH >> $logfile 2>&1; then
3748     cat <<EOF
3749 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3750 variable to another directory and make sure that it is not mounted noexec.
3751 EOF
3752     die "Sanity test failed."
3753 fi
3754
3755 armasm_flags(){
3756     for flag; do
3757         case $flag in
3758             # Filter out MSVC cl.exe options from cflags that shouldn't
3759             # be passed to gas-preprocessor
3760             -M[TD]*)                                            ;;
3761             *)                  echo $flag                      ;;
3762         esac
3763    done
3764 }
3765
3766 ccc_flags(){
3767     for flag; do
3768         case $flag in
3769             -std=c99)           echo -c99                       ;;
3770             -mcpu=*)            echo -arch ${flag#*=}           ;;
3771             -mieee)             echo -ieee                      ;;
3772             -O*|-fast)          echo $flag                      ;;
3773             -fno-math-errno)    echo -assume nomath_errno       ;;
3774             -g)                 echo -g3                        ;;
3775             -Wall)              echo -msg_enable level2         ;;
3776             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3777             -Wl,*)              echo $flag                      ;;
3778             -f*|-W*)                                            ;;
3779             *)                  echo $flag                      ;;
3780         esac
3781    done
3782 }
3783
3784 cparser_flags(){
3785     for flag; do
3786         case $flag in
3787             -Wno-switch)             echo -Wno-switch-enum ;;
3788             -Wno-format-zero-length) ;;
3789             -Wdisabled-optimization) ;;
3790             -Wno-pointer-sign)       echo -Wno-other ;;
3791             *)                       echo $flag ;;
3792         esac
3793     done
3794 }
3795
3796 msvc_common_flags(){
3797     for flag; do
3798         case $flag in
3799             # In addition to specifying certain flags under the compiler
3800             # specific filters, they must be specified here as well or else the
3801             # generic catch all at the bottom will print the original flag.
3802             -Wall)                ;;
3803             -std=c99)             ;;
3804             # Common flags
3805             -fomit-frame-pointer) ;;
3806             -g)                   echo -Z7 ;;
3807             -fno-math-errno)      ;;
3808             -fno-common)          ;;
3809             -fno-signed-zeros)    ;;
3810             -fPIC)                ;;
3811             -mthumb)              ;;
3812             -march=*)             ;;
3813             -lz)                  echo zlib.lib ;;
3814             -lavifil32)           echo vfw32.lib ;;
3815             -lavicap32)           echo vfw32.lib user32.lib ;;
3816             -lx264)               echo libx264.lib ;;
3817             -l*)                  echo ${flag#-l}.lib ;;
3818             -LARGEADDRESSAWARE)   echo $flag ;;
3819             -L*)                  echo -libpath:${flag#-L} ;;
3820             *)                    echo $flag ;;
3821         esac
3822     done
3823 }
3824
3825 msvc_flags(){
3826     msvc_common_flags "$@"
3827     for flag; do
3828         case $flag in
3829             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3830                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3831                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3832                                        -wd4307 \
3833                                        -wd4273 -wd4554 -wd4701 ;;
3834         esac
3835     done
3836 }
3837
3838 icl_flags(){
3839     msvc_common_flags "$@"
3840     for flag; do
3841         case $flag in
3842             # Despite what Intel's documentation says -Wall, which is supported
3843             # on Windows, does enable remarks so disable them here.
3844             -Wall)                echo $flag -Qdiag-disable:remark ;;
3845             -std=c99)             echo -Qstd=c99 ;;
3846             -flto)                echo -ipo ;;
3847         esac
3848     done
3849 }
3850
3851 icc_flags(){
3852     for flag; do
3853         case $flag in
3854             -flto)                echo -ipo ;;
3855             *)                    echo $flag ;;
3856         esac
3857     done
3858 }
3859
3860 pgi_flags(){
3861     for flag; do
3862         case $flag in
3863             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3864             -fomit-frame-pointer) echo -Mnoframe ;;
3865             -g)                   echo -gopt ;;
3866             *)                    echo $flag ;;
3867         esac
3868     done
3869 }
3870
3871 suncc_flags(){
3872     for flag; do
3873         case $flag in
3874             -march=*|-mcpu=*)
3875                 case "${flag#*=}" in
3876                     native)                   echo -xtarget=native       ;;
3877                     v9|niagara)               echo -xarch=sparc          ;;
3878                     ultrasparc)               echo -xarch=sparcvis       ;;
3879                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3880                     i586|pentium)             echo -xchip=pentium        ;;
3881                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3882                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3883                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3884                     pentium4*)          echo -xtarget=pentium4           ;;
3885                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3886                     *-sse3)             echo -xarch=sse3                 ;;
3887                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3888                     bonnell)                   echo -xarch=ssse3         ;;
3889                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3890                     westmere)                  echo -xtarget=westmere    ;;
3891                     silvermont)                echo -xarch=sse4_2        ;;
3892                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3893                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3894                                                echo -xarch=avx           ;;
3895                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3896                     btver1)                    echo -xarch=amdsse4a      ;;
3897                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3898                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3899                     k8|opteron|athlon64|athlon-fx)
3900                                                echo -xarch=sse2a         ;;
3901                     athlon*)                   echo -xarch=pentium_proa  ;;
3902                 esac
3903                 ;;
3904             -std=c99)             echo -xc99              ;;
3905             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3906             -fPIC)                echo -KPIC -xcode=pic32 ;;
3907             -W*,*)                echo $flag              ;;
3908             -f*-*|-W*|-mimpure-text)                      ;;
3909             -shared)              echo -G                 ;;
3910             *)                    echo $flag              ;;
3911         esac
3912     done
3913 }
3914
3915 tms470_flags(){
3916     for flag; do
3917         case $flag in
3918             -march=*|-mcpu=*)
3919                 case "${flag#*=}" in
3920                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3921                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3922                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3923                     armv6*|arm11*)          echo -mv=6   ;;
3924                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3925                                             echo -mv=5e  ;;
3926                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3927                 esac
3928                 ;;
3929             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3930             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3931             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3932             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3933             -msoft-float)   echo --float_support=vfplib       ;;
3934             -O[0-3]|-mf=*)  echo $flag                        ;;
3935             -g)             echo -g -mn                       ;;
3936             -pds=*)         echo $flag                        ;;
3937             -D*|-I*)        echo $flag                        ;;
3938             --gcc|--abi=*)  echo $flag                        ;;
3939             -me)            echo $flag                        ;;
3940         esac
3941     done
3942 }
3943
3944 probe_cc(){
3945     pfx=$1
3946     _cc=$2
3947     first=$3
3948
3949     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3950     unset _ld_o _ldflags _ld_lib _ld_path
3951     unset _depflags _DEPCMD _DEPFLAGS
3952     _flags_filter=echo
3953
3954     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3955         true # no-op to avoid reading stdin in following checks
3956     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3957         _type=llvm_gcc
3958         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3959         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3960         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3961         _cflags_speed='-O3'
3962         _cflags_size='-Os'
3963     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3964         _type=gcc
3965         gcc_version=$($_cc --version | head -n1)
3966         gcc_basever=$($_cc -dumpversion)
3967         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3968         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3969         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3970         case $gcc_basever in
3971             2) ;;
3972             2.*) ;;
3973             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3974         esac
3975         if [ "$first" = true ]; then
3976             case $gcc_basever in
3977                 4.2*)
3978                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3979             esac
3980         fi
3981         _cflags_speed='-O3'
3982         _cflags_size='-Os'
3983     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3984         _type=icc
3985         _ident=$($_cc --version | head -n1)
3986         _depflags='-MMD'
3987         _cflags_speed='-O3'
3988         _cflags_size='-Os'
3989         _cflags_noopt='-O1'
3990         _flags_filter=icc_flags
3991     elif $_cc -v 2>&1 | grep -q xlc; then
3992         _type=xlc
3993         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3994         _cflags_speed='-O5'
3995         _cflags_size='-O5 -qcompact'
3996     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3997         _type=ccc
3998         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3999         _DEPFLAGS='-M'
4000         _cflags_speed='-fast'
4001         _cflags_size='-O1'
4002         _flags_filter=ccc_flags
4003     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4004         test -d "$sysroot" || die "No valid sysroot specified."
4005         _type=armcc
4006         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4007         armcc_conf="$PWD/armcc.conf"
4008         $_cc --arm_linux_configure                 \
4009              --arm_linux_config_file="$armcc_conf" \
4010              --configure_sysroot="$sysroot"        \
4011              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4012              die "Error creating armcc configuration file."
4013         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4014         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4015         as_default="${cross_prefix}gcc"
4016         _depflags='-MMD'
4017         _cflags_speed='-O3'
4018         _cflags_size='-Os'
4019     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4020         _type=tms470
4021         _ident=$($_cc -version | head -n1 | tr -s ' ')
4022         _flags='--gcc --abi=eabi -me'
4023         _cc_e='-ppl -fe=$@'
4024         _cc_o='-fe=$@'
4025         _depflags='-ppa -ppd=$(@:.o=.d)'
4026         _cflags_speed='-O3 -mf=5'
4027         _cflags_size='-O3 -mf=2'
4028         _flags_filter=tms470_flags
4029     elif $_cc -v 2>&1 | grep -q clang; then
4030         _type=clang
4031         _ident=$($_cc --version 2>/dev/null | head -n1)
4032         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4033         _cflags_speed='-O3'
4034         _cflags_size='-Os'
4035     elif $_cc -V 2>&1 | grep -q Sun; then
4036         _type=suncc
4037         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4038         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4039         _DEPFLAGS='-xM1 -xc99'
4040         _ldflags='-std=c99'
4041         _cflags_speed='-O5'
4042         _cflags_size='-O5 -xspace'
4043         _flags_filter=suncc_flags
4044     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4045         _type=pathscale
4046         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4047         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4048         _cflags_speed='-O2'
4049         _cflags_size='-Os'
4050         _flags_filter='filter_out -Wdisabled-optimization'
4051     elif $_cc -v 2>&1 | grep -q Open64; then
4052         _type=open64
4053         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4054         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4055         _cflags_speed='-O2'
4056         _cflags_size='-Os'
4057         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4058     elif $_cc -V 2>&1 | grep -q Portland; then
4059         _type=pgi
4060         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4061         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4062         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4063         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4064         _cflags_noopt="-O"
4065         _flags_filter=pgi_flags
4066     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4067         _type=armasm
4068         _ident=$($_cc | head -n1)
4069         # 4509: "This form of conditional instruction is deprecated"
4070         _flags="-nologo -ignore 4509"
4071         _flags_filter=armasm_flags
4072     elif $_cc 2>&1 | grep -q Intel; then
4073         _type=icl
4074         _ident=$($_cc 2>&1 | head -n1)
4075         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4076         # Not only is O3 broken on 13.x+ but it is slower on all previous
4077         # versions (tested) as well.
4078         _cflags_speed="-O2"
4079         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4080         if $_cc 2>&1 | grep -q Linker; then
4081             _ld_o='-out:$@'
4082         else
4083             _ld_o='-Fe$@'
4084         fi
4085         _cc_o='-Fo$@'
4086         _cc_e='-P'
4087         _flags_filter=icl_flags
4088         _ld_lib='lib%.a'
4089         _ld_path='-libpath:'
4090         # -Qdiag-error to make icl error when seeing certain unknown arguments
4091         _flags='-nologo -Qdiag-error:4044,10157'
4092         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4093         # with MSVC which enables it by default.
4094         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4095         disable stripping
4096     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4097         _type=msvc
4098         _ident=$($_cc 2>&1 | head -n1)
4099         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4100         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4101         _cflags_speed="-O2"
4102         _cflags_size="-O1"
4103         if $_cc -nologo- 2>&1 | grep -q Linker; then
4104             _ld_o='-out:$@'
4105         else
4106             _ld_o='-Fe$@'
4107         fi
4108         _cc_o='-Fo$@'
4109         _cc_e='-P -Fi$@'
4110         _flags_filter=msvc_flags
4111         _ld_lib='lib%.a'
4112         _ld_path='-libpath:'
4113         _flags='-nologo'
4114         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4115         disable stripping
4116     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4117         _type=cparser
4118         _ident=$($_cc --version | head -n1)
4119         _depflags='-MMD'
4120         _cflags_speed='-O4'
4121         _cflags_size='-O2'
4122         _flags_filter=cparser_flags
4123     fi
4124
4125     eval ${pfx}_type=\$_type
4126     eval ${pfx}_ident=\$_ident
4127 }
4128
4129 set_ccvars(){
4130     eval ${1}_C=\${_cc_c-\${${1}_C}}
4131     eval ${1}_E=\${_cc_e-\${${1}_E}}
4132     eval ${1}_O=\${_cc_o-\${${1}_O}}
4133
4134     if [ -n "$_depflags" ]; then
4135         eval ${1}_DEPFLAGS=\$_depflags
4136     else
4137         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4138         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4139         eval DEP${1}FLAGS=\$_flags
4140     fi
4141 }
4142
4143 probe_cc cc "$cc" "true"
4144 cflags_filter=$_flags_filter
4145 cflags_speed=$_cflags_speed
4146 cflags_size=$_cflags_size
4147 cflags_noopt=$_cflags_noopt
4148 add_cflags $_flags $_cflags
4149 cc_ldflags=$_ldflags
4150 set_ccvars CC
4151
4152 probe_cc hostcc "$host_cc"
4153 host_cflags_filter=$_flags_filter
4154 add_host_cflags  $_flags $_cflags
4155 set_ccvars HOSTCC
4156
4157 test -n "$cc_type" && enable $cc_type ||
4158     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4159
4160 : ${as_default:=$cc}
4161 : ${objcc_default:=$cc}
4162 : ${dep_cc_default:=$cc}
4163 : ${ld_default:=$cc}
4164 : ${host_ld_default:=$host_cc}
4165 set_default ar as objcc dep_cc ld ln_s host_ld windres
4166
4167 probe_cc as "$as"
4168 asflags_filter=$_flags_filter
4169 add_asflags $_flags $_cflags
4170 set_ccvars AS
4171
4172 probe_cc objcc "$objcc"
4173 objcflags_filter=$_flags_filter
4174 add_objcflags $_flags $_cflags
4175 set_ccvars OBJC
4176
4177 probe_cc ld "$ld"
4178 ldflags_filter=$_flags_filter
4179 add_ldflags $_flags $_ldflags
4180 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4181 LD_O=${_ld_o-$LD_O}
4182 LD_LIB=${_ld_lib-$LD_LIB}
4183 LD_PATH=${_ld_path-$LD_PATH}
4184
4185 probe_cc hostld "$host_ld"
4186 host_ldflags_filter=$_flags_filter
4187 add_host_ldflags $_flags $_ldflags
4188 HOSTLD_O=${_ld_o-$HOSTLD_O}
4189
4190 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4191     probe_cc depcc "$dep_cc"
4192     CCDEP=${_DEPCMD:-$DEPCMD}
4193     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4194     DEPCCFLAGS=$_flags
4195 fi
4196
4197 if $ar 2>&1 | grep -q Microsoft; then
4198     arflags="-nologo"
4199     ar_o='-out:$@'
4200 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4201     arflags="rq"
4202     ar_o='$@'
4203 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4204     arflags='-Xany -r -c'
4205     ar_o='$@'
4206 elif $ar 2>&1 | grep -q "\[D\] "; then
4207     arflags="rcD"
4208     ar_o='$@'
4209 else
4210     arflags="rc"
4211     ar_o='$@'
4212 fi
4213
4214 add_cflags $extra_cflags
4215 add_cxxflags $extra_cxxflags
4216 add_objcflags $extra_objcflags
4217 add_asflags $extra_cflags
4218
4219 if test -n "$sysroot"; then
4220     case "$cc_type" in
4221         gcc|llvm_gcc|clang)
4222             add_cppflags --sysroot="$sysroot"
4223             add_ldflags --sysroot="$sysroot"
4224 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4225             add_cppflags -isysroot "$sysroot"
4226             add_ldflags -isysroot "$sysroot"
4227         ;;
4228         tms470)
4229             add_cppflags -I"$sysinclude"
4230             add_ldflags  --sysroot="$sysroot"
4231         ;;
4232     esac
4233 fi
4234
4235 if test "$cpu" = host; then
4236     enabled cross_compile &&
4237         die "--cpu=host makes no sense when cross-compiling."
4238
4239     case "$cc_type" in
4240         gcc|llvm_gcc)
4241             check_native(){
4242                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4243                 sed -n "/cc1.*$1=/{
4244                             s/.*$1=\\([^ ]*\\).*/\\1/
4245                             p
4246                             q
4247                         }" $TMPE
4248             }
4249             cpu=$(check_native -march || check_native -mcpu)
4250         ;;
4251         clang)
4252             check_native(){
4253                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4254                 sed -n "/cc1.*-target-cpu /{
4255                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4256                             p
4257                             q
4258                         }" $TMPE
4259             }
4260             cpu=$(check_native -march)
4261         ;;
4262     esac
4263
4264     test "${cpu:-host}" = host &&
4265         die "--cpu=host not supported with compiler $cc"
4266 fi
4267
4268 # Deal with common $arch aliases
4269 case "$arch" in
4270     aarch64|arm64)
4271         arch="aarch64"
4272     ;;
4273     arm*|iPad*|iPhone*)
4274         arch="arm"
4275     ;;
4276     mips*|IP*)
4277         case "$arch" in
4278         *el)
4279             add_cppflags -EL
4280             add_ldflags -EL
4281         ;;
4282         *eb)
4283             add_cppflags -EB
4284             add_ldflags -EB
4285         ;;
4286         esac
4287         arch="mips"
4288     ;;
4289     parisc*|hppa*)
4290         arch="parisc"
4291     ;;
4292     "Power Macintosh"|ppc*|powerpc*)
4293         arch="ppc"
4294     ;;
4295     s390|s390x)
4296         arch="s390"
4297     ;;
4298     sh4|sh)
4299         arch="sh4"
4300     ;;
4301     sun4*|sparc*)
4302         arch="sparc"
4303     ;;
4304     tilegx|tile-gx)
4305         arch="tilegx"
4306     ;;
4307     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4308         arch="x86"
4309     ;;
4310 esac
4311
4312 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4313 enable $arch
4314
4315 # Add processor-specific flags
4316 if enabled aarch64; then
4317
4318     case $cpu in
4319         armv*)
4320             cpuflags="-march=$cpu"
4321         ;;
4322         *)
4323             cpuflags="-mcpu=$cpu"
4324         ;;
4325     esac
4326
4327 elif enabled alpha; then
4328
4329     cpuflags="-mcpu=$cpu"
4330
4331 elif enabled arm; then
4332
4333     check_arm_arch() {
4334         check_cpp_condition stddef.h \
4335             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4336             $cpuflags
4337     }
4338
4339     probe_arm_arch() {
4340         if   check_arm_arch 4;        then echo armv4
4341         elif check_arm_arch 4T;       then echo armv4t
4342         elif check_arm_arch 5;        then echo armv5
4343         elif check_arm_arch 5E;       then echo armv5e
4344         elif check_arm_arch 5T;       then echo armv5t
4345         elif check_arm_arch 5TE;      then echo armv5te
4346         elif check_arm_arch 5TEJ;     then echo armv5te
4347         elif check_arm_arch 6;        then echo armv6
4348         elif check_arm_arch 6J;       then echo armv6j
4349         elif check_arm_arch 6K;       then echo armv6k
4350         elif check_arm_arch 6Z;       then echo armv6z
4351         elif check_arm_arch 6ZK;      then echo armv6zk
4352         elif check_arm_arch 6T2;      then echo armv6t2
4353         elif check_arm_arch 7;        then echo armv7
4354         elif check_arm_arch 7A  7_A;  then echo armv7-a
4355         elif check_arm_arch 7S;       then echo armv7-a
4356         elif check_arm_arch 7R  7_R;  then echo armv7-r
4357         elif check_arm_arch 7M  7_M;  then echo armv7-m
4358         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4359         elif check_arm_arch 8A  8_A;  then echo armv8-a
4360         fi
4361     }
4362
4363     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4364
4365     case $cpu in
4366         armv*)
4367             cpuflags="-march=$cpu"
4368             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4369         ;;
4370         *)
4371             cpuflags="-mcpu=$cpu"
4372             case $cpu in
4373                 cortex-a*)                               subarch=armv7a  ;;
4374                 cortex-r*)                               subarch=armv7r  ;;
4375                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4376                 arm11*)                                  subarch=armv6   ;;
4377                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4378                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4379                 *)                             subarch=$(probe_arm_arch) ;;
4380             esac
4381         ;;
4382     esac
4383
4384     case "$subarch" in
4385         armv5t*)    enable fast_clz                ;;
4386         armv[6-8]*)
4387             enable fast_clz
4388             disabled fast_unaligned || enable fast_unaligned
4389             ;;
4390     esac
4391
4392 elif enabled avr32; then
4393
4394     case $cpu in
4395         ap7[02]0[0-2])
4396             subarch="avr32_ap"
4397             cpuflags="-mpart=$cpu"
4398         ;;
4399         ap)
4400             subarch="avr32_ap"
4401             cpuflags="-march=$cpu"
4402         ;;
4403         uc3[ab]*)
4404             subarch="avr32_uc"
4405             cpuflags="-mcpu=$cpu"
4406         ;;
4407         uc)
4408             subarch="avr32_uc"
4409             cpuflags="-march=$cpu"
4410         ;;
4411     esac
4412
4413 elif enabled bfin; then
4414
4415     cpuflags="-mcpu=$cpu"
4416
4417 elif enabled mips; then
4418
4419     cpuflags="-march=$cpu"
4420
4421     if [ "$cpu" != "generic" ]; then
4422         disable mips32r2
4423         disable mips32r5
4424         disable mips64r2
4425         disable mips32r6
4426         disable mips64r6
4427         disable loongson2
4428         disable loongson3
4429
4430         case $cpu in
4431             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4432                 enable mips32r2
4433                 disable msa
4434             ;;
4435             p5600|i6400|p6600)
4436                 disable mipsdsp
4437                 disable mipsdspr2
4438             ;;
4439             loongson*)
4440                 enable loongson2
4441                 enable loongson3
4442                 enable local_aligned_8 local_aligned_16 local_aligned_32
4443                 enable simd_align_16
4444                 enable fast_64bit
4445                 enable fast_clz
4446                 enable fast_cmov
4447                 enable fast_unaligned
4448                 disable aligned_stack
4449                 disable mipsfpu
4450                 disable mipsdsp
4451                 disable mipsdspr2
4452                 case $cpu in
4453                     loongson3*)
4454                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4455                     ;;
4456                     loongson2e)
4457                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4458                     ;;
4459                     loongson2f)
4460                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4461                     ;;
4462                 esac
4463             ;;
4464             *)
4465                 # Unknown CPU. Disable everything.
4466                 warn "unknown CPU. Disabling all MIPS optimizations."
4467                 disable mipsfpu
4468                 disable mipsdsp
4469                 disable mipsdspr2
4470                 disable msa
4471                 disable mmi
4472             ;;
4473         esac
4474
4475         case $cpu in
4476             24kc)
4477                 disable mipsfpu
4478                 disable mipsdsp
4479                 disable mipsdspr2
4480             ;;
4481             24kf*)
4482                 disable mipsdsp
4483                 disable mipsdspr2
4484             ;;
4485             24kec|34kc|1004kc)
4486                 disable mipsfpu
4487                 disable mipsdspr2
4488             ;;
4489             24kef*|34kf*|1004kf*)
4490                 disable mipsdspr2
4491             ;;
4492             74kc)
4493                 disable mipsfpu
4494             ;;
4495             p5600)
4496                 enable mips32r5
4497                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4498             ;;
4499             i6400)
4500                 enable mips64r6
4501                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4502             ;;
4503             p6600)
4504                 enable mips64r6
4505                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4506             ;;
4507         esac
4508     else
4509         # We do not disable anything. Is up to the user to disable the unwanted features.
4510         warn 'generic cpu selected'
4511     fi
4512
4513 elif enabled ppc; then
4514
4515     disable ldbrx
4516
4517     case $(tolower $cpu) in
4518         601|ppc601|powerpc601)
4519             cpuflags="-mcpu=601"
4520             disable altivec
4521         ;;
4522         603*|ppc603*|powerpc603*)
4523             cpuflags="-mcpu=603"
4524             disable altivec
4525         ;;
4526         604*|ppc604*|powerpc604*)
4527             cpuflags="-mcpu=604"
4528             disable altivec
4529         ;;
4530         g3|75*|ppc75*|powerpc75*)
4531             cpuflags="-mcpu=750"
4532             disable altivec
4533         ;;
4534         g4|745*|ppc745*|powerpc745*)
4535             cpuflags="-mcpu=7450"
4536             disable vsx
4537         ;;
4538         74*|ppc74*|powerpc74*)
4539             cpuflags="-mcpu=7400"
4540             disable vsx
4541         ;;
4542         g5|970|ppc970|powerpc970)
4543             cpuflags="-mcpu=970"
4544             disable vsx
4545         ;;
4546         power[3-6]*)
4547             cpuflags="-mcpu=$cpu"
4548             disable vsx
4549         ;;
4550         power[7-8]*)
4551             cpuflags="-mcpu=$cpu"
4552         ;;
4553         cell)
4554             cpuflags="-mcpu=cell"
4555             enable ldbrx
4556             disable vsx
4557         ;;
4558         e500mc)
4559             cpuflags="-mcpu=e500mc"
4560             disable altivec
4561         ;;
4562         e500v2)
4563             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4564             disable altivec
4565             disable dcbzl
4566         ;;
4567         e500)
4568             cpuflags="-mcpu=8540 -mhard-float"
4569             disable altivec
4570             disable dcbzl
4571         ;;
4572     esac
4573
4574 elif enabled sparc; then
4575
4576     case $cpu in
4577         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4578             cpuflags="-mcpu=$cpu"
4579         ;;
4580         ultrasparc*|niagara[234])
4581             cpuflags="-mcpu=$cpu"
4582         ;;
4583     esac
4584
4585 elif enabled x86; then
4586
4587     case $cpu in
4588         i[345]86|pentium)
4589             cpuflags="-march=$cpu"
4590             disable i686
4591             disable mmx
4592         ;;
4593         # targets that do NOT support nopl and conditional mov (cmov)
4594         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4595             cpuflags="-march=$cpu"
4596             disable i686
4597         ;;
4598         # targets that do support nopl and conditional mov (cmov)
4599         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4600         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4601         |amdfam10|barcelona|b[dt]ver*|znver*)
4602             cpuflags="-march=$cpu"
4603             enable i686
4604             enable fast_cmov
4605         ;;
4606         # targets that do support conditional mov but on which it's slow
4607         pentium4|pentium4m|prescott|nocona)
4608             cpuflags="-march=$cpu"
4609             enable i686
4610             disable fast_cmov
4611         ;;
4612     esac
4613
4614 fi
4615
4616 if [ "$cpu" != generic ]; then
4617     add_cflags  $cpuflags
4618     add_asflags $cpuflags
4619     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4620 fi
4621
4622 # compiler sanity check
4623 check_exec <<EOF
4624 int main(void){ return 0; }
4625 EOF
4626 if test "$?" != 0; then
4627     echo "$cc is unable to create an executable file."
4628     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4629         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4630         echo "Only do this if you know what cross compiling means."
4631     fi
4632     die "C compiler test failed."
4633 fi
4634
4635 add_cppflags -D_ISOC99_SOURCE
4636 add_cxxflags -D__STDC_CONSTANT_MACROS
4637 add_cxxflags -std=c++98
4638
4639 # some compilers silently accept -std=c11, so we also need to check that the
4640 # version macro is defined properly
4641 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4642     add_cflags -std=c11
4643 else
4644     check_cflags -std=c99
4645 fi
4646
4647 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4648 #include <stdlib.h>
4649 EOF
4650 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4651 #include <stdlib.h>
4652 EOF
4653
4654 add_host_cppflags -D_ISOC99_SOURCE
4655 check_host_cflags -std=c99
4656 check_host_cflags -Wall
4657 check_host_cflags -O3
4658
4659 check_64bit(){
4660     arch32=$1
4661     arch64=$2
4662     expr=$3
4663     check_code cc "" "int test[2*($expr) - 1]" &&
4664         subarch=$arch64 || subarch=$arch32
4665 }
4666
4667 case "$arch" in
4668     aarch64|alpha|ia64)
4669         spic=$shared
4670     ;;
4671     mips)
4672         check_64bit mips mips64 '_MIPS_SIM > 1'
4673         spic=$shared
4674     ;;
4675     parisc)
4676         check_64bit parisc parisc64 'sizeof(void *) > 4'
4677         spic=$shared
4678     ;;
4679     ppc)
4680         check_64bit ppc ppc64 'sizeof(void *) > 4'
4681         spic=$shared
4682     ;;
4683     s390)
4684         check_64bit s390 s390x 'sizeof(void *) > 4'
4685         spic=$shared
4686     ;;
4687     sparc)
4688         check_64bit sparc sparc64 'sizeof(void *) > 4'
4689         spic=$shared
4690     ;;
4691     x86)
4692         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4693         # Treat x32 as x64 for now. Note it also needs spic=$shared
4694         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4695             subarch=x86_64
4696         if test "$subarch" = "x86_64"; then
4697             spic=$shared
4698         fi
4699     ;;
4700     ppc)
4701         check_cc <<EOF && subarch="ppc64"
4702         int test[(int)sizeof(char*) - 7];
4703 EOF
4704     ;;
4705 esac
4706
4707 enable $subarch
4708 enabled spic && enable_weak pic
4709
4710 # OS specific
4711 case $target_os in
4712     aix)
4713         SHFLAGS=-shared
4714         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4715         enabled shared && add_ldflags -Wl,-brtl
4716         ;;
4717     android)
4718         disable symver
4719         enable section_data_rel_ro
4720         SLIB_INSTALL_NAME='$(SLIBNAME)'
4721         SLIB_INSTALL_LINKS=
4722         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4723         ;;
4724     haiku)
4725         prefix_default="/boot/common"
4726         network_extralibs="-lnetwork"
4727         host_libs=
4728         ;;
4729     sunos)
4730         SHFLAGS='-shared -Wl,-h,$$(@F)'
4731         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4732         network_extralibs="-lsocket -lnsl"
4733         add_cppflags -D__EXTENSIONS__
4734         # When using suncc to build, the Solaris linker will mark
4735         # an executable with each instruction set encountered by
4736         # the Solaris assembler.  As our libraries contain their own
4737         # guards for processor-specific code, instead suppress
4738         # generation of the HWCAPS ELF section on Solaris x86 only.
4739         enabled_all suncc x86 &&
4740             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4741             add_ldflags -Wl,-M,mapfile
4742         nm_default='nm -P -g'
4743         version_script='-M'
4744         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4745         ;;
4746     netbsd)
4747         disable symver
4748         oss_indev_extralibs="-lossaudio"
4749         oss_outdev_extralibs="-lossaudio"
4750         enabled gcc || check_ldflags -Wl,-zmuldefs
4751         ;;
4752     openbsd|bitrig)
4753         disable symver
4754         SHFLAGS='-shared'
4755         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4756         SLIB_INSTALL_LINKS=
4757         oss_indev_extralibs="-lossaudio"
4758         oss_outdev_extralibs="-lossaudio"
4759         ;;
4760     dragonfly)
4761         disable symver
4762         ;;
4763     freebsd)
4764         ;;
4765     bsd/os)
4766         add_extralibs -lpoll -lgnugetopt
4767         strip="strip -d"
4768         ;;
4769     darwin)
4770         enabled ppc && add_asflags -force_cpusubtype_ALL
4771         install_name_dir_default='$(SHLIBDIR)'
4772         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4773         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4774         strip="${strip} -x"
4775         add_ldflags -Wl,-dynamic,-search_paths_first
4776         SLIBSUF=".dylib"
4777         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4778         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4779         objformat="macho"
4780         enabled x86_64 && objformat="macho64"
4781         enabled_any pic shared x86_64 ||
4782             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4783         check_header dispatch/dispatch.h &&
4784             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4785         version_script='-exported_symbols_list'
4786         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4787         ;;
4788     msys*)
4789         die "Native MSYS builds are discouraged, please use the MINGW environment."
4790         ;;
4791     mingw32*|mingw64*)
4792         if test $target_os = "mingw32ce"; then
4793             disable network
4794         else
4795             target_os=mingw32
4796         fi
4797         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4798         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4799         LIBTARGET=i386
4800         if enabled x86_64; then
4801             LIBTARGET="i386:x86-64"
4802         elif enabled arm; then
4803             LIBTARGET=arm-wince
4804         fi
4805         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4806         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4807         shlibdir_default="$bindir_default"
4808         SLIBPREF=""
4809         SLIBSUF=".dll"
4810         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4811         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4812         dlltool="${cross_prefix}dlltool"
4813         if check_cmd lib.exe -list; then
4814             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4815             if enabled x86_64; then
4816                 LIBTARGET=x64
4817             fi
4818         elif check_cmd $dlltool --version; then
4819             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4820         fi
4821         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4822         SLIB_INSTALL_LINKS=
4823         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4824         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4825         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4826         objformat="win32"
4827         ranlib=:
4828         enable dos_paths
4829         check_ldflags -Wl,--nxcompat,--dynamicbase
4830         # Lets work around some stupidity in binutils.
4831         # ld will strip relocations from executables even though we need them
4832         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4833         # however ld then forgets what the entry point should be (oops) so we
4834         # have to manually (re)set it.
4835         if enabled x86_32; then
4836             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4837         elif enabled x86_64; then
4838             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4839             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4840             # Set image base >4GB for extra entropy with HEASLR
4841             add_ldexeflags -Wl,--image-base,0x140000000
4842             append SHFLAGS -Wl,--image-base,0x180000000
4843         fi
4844         ;;
4845     win32|win64)
4846         disable symver
4847         if enabled shared; then
4848             # Link to the import library instead of the normal static library
4849             # for shared libs.
4850             LD_LIB='%.lib'
4851             # Cannot build both shared and static libs with MSVC or icl.
4852             disable static
4853         fi
4854         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4855         shlibdir_default="$bindir_default"
4856         SLIBPREF=""
4857         SLIBSUF=".dll"
4858         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4859         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4860         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4861         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4862         SLIB_INSTALL_LINKS=
4863         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4864         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4865         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4866         objformat="win32"
4867         ranlib=:
4868         enable dos_paths
4869         ;;
4870     cygwin*)
4871         target_os=cygwin
4872         shlibdir_default="$bindir_default"
4873         SLIBPREF="cyg"
4874         SLIBSUF=".dll"
4875         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4876         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4877         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4878         SLIB_INSTALL_LINKS=
4879         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4880         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4881         objformat="win32"
4882         enable dos_paths
4883         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4884         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4885         ;;
4886     *-dos|freedos|opendos)
4887         network_extralibs="-lsocket"
4888         objformat="coff"
4889         enable dos_paths
4890         add_cppflags -U__STRICT_ANSI__
4891         ;;
4892     linux)
4893         enable dv1394
4894         enable section_data_rel_ro
4895         ;;
4896     irix*)
4897         target_os=irix
4898         ranlib="echo ignoring ranlib"
4899         ;;
4900     os/2*)
4901         strip="lxlite -CS"
4902         objformat="aout"
4903         add_cppflags -D_GNU_SOURCE
4904         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4905         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4906         LIBSUF="_s.a"
4907         SLIBPREF=""
4908         SLIBSUF=".dll"
4909         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4910         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4911         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4912             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4913             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4914             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4915             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4916         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4917             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4918         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4919         SLIB_INSTALL_LINKS=
4920         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4921         enable dos_paths
4922         enable_weak os2threads
4923         ;;
4924     gnu/kfreebsd)
4925         add_cppflags -D_BSD_SOURCE
4926         ;;
4927     gnu)
4928         ;;
4929     qnx)
4930         add_cppflags -D_QNX_SOURCE
4931         network_extralibs="-lsocket"
4932         ;;
4933     symbian)
4934         SLIBSUF=".dll"
4935         enable dos_paths
4936         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4937         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4938         add_ldflags -Wl,--target1-abs,--no-undefined \
4939                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4940                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4941         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4942                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4943                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4944         ;;
4945     osf1)
4946         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4947         ;;
4948     minix)
4949         ;;
4950     plan9)
4951         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4952                      -D_REENTRANT_SOURCE        \
4953                      -D_RESEARCH_SOURCE         \
4954                      -DFD_SETSIZE=96            \
4955                      -DHAVE_SOCK_OPTS
4956         add_compat strtod.o strtod=avpriv_strtod
4957         network_extralibs='-lbsd'
4958         exeobjs=compat/plan9/main.o
4959         disable ffserver
4960         cp_f='cp'
4961         ;;
4962     none)
4963         ;;
4964     *)
4965         die "Unknown OS '$target_os'."
4966         ;;
4967 esac
4968
4969 # test if creating links works
4970 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4971 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4972 mkdir "$link_dest"
4973 $ln_s "$link_dest" "$link_name"
4974 touch "$link_dest/test_file"
4975 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4976     # create link to source path
4977     [ -e src ] && rm src
4978     $ln_s "$source_path" src
4979     source_link=src
4980 else
4981     # creating directory links doesn't work
4982     # fall back to using the full source path
4983     source_link="$source_path"
4984 fi
4985 # cleanup
4986 rm -r "$link_dest"
4987 rm -r "$link_name"
4988
4989 # determine libc flavour
4990
4991 probe_libc(){
4992     pfx=$1
4993     pfx_no_=${pfx%_}
4994     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4995     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4996         eval ${pfx}libc_type=uclibc
4997         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4998     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4999         eval ${pfx}libc_type=glibc
5000         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5001     # MinGW headers can be installed on Cygwin, so check for newlib first.
5002     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5003         eval ${pfx}libc_type=newlib
5004         add_${pfx}cppflags -U__STRICT_ANSI__
5005     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5006     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5007         eval ${pfx}libc_type=mingw64
5008         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5009             add_compat msvcrt/snprintf.o
5010             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5011         fi
5012         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5013         eval test \$${pfx_no_}cc_type = "gcc" &&
5014             add_${pfx}cppflags -D__printf__=__gnu_printf__
5015     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5016          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5017         eval ${pfx}libc_type=mingw32
5018         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5019             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5020             die "ERROR: MinGW32 runtime version must be >= 3.15."
5021         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5022         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5023             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5024         eval test \$${pfx_no_}cc_type = "gcc" &&
5025             add_${pfx}cppflags -D__printf__=__gnu_printf__
5026     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5027         eval ${pfx}libc_type=msvcrt
5028         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5029             if [ "$pfx" = host_ ]; then
5030                 add_host_cppflags -Dsnprintf=_snprintf
5031             else
5032                 add_compat strtod.o strtod=avpriv_strtod
5033                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5034                                              _snprintf=avpriv_snprintf  \
5035                                              vsnprintf=avpriv_vsnprintf
5036             fi
5037         fi
5038         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5039         # 0x601 by default unless something else is set by the user.
5040         # This can easily lead to us detecting functions only present
5041         # in such new versions and producing binaries requiring windows 7.0.
5042         # Therefore explicitly set the default to XP unless the user has
5043         # set something else on the command line.
5044         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5045         # family. For these cases, configure is free to use any functions
5046         # found in the SDK headers by default. (Alternatively, we could force
5047         # _WIN32_WINNT to 0x0602 in that case.)
5048         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5049             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5050 #ifdef WINAPI_FAMILY
5051 #include <winapifamily.h>
5052 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5053 #error not desktop
5054 #endif
5055 #endif
5056 EOF
5057     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5058         eval ${pfx}libc_type=klibc
5059     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5060         eval ${pfx}libc_type=bionic
5061     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5062         eval ${pfx}libc_type=solaris
5063         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5064     fi
5065     check_${pfx}cc <<EOF
5066 #include <time.h>
5067 void *v = localtime_r;
5068 EOF
5069 test "$?" != 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
5070 #include <time.h>
5071 void *v = localtime_r;
5072 EOF
5073
5074 }
5075
5076 probe_libc
5077 test -n "$libc_type" && enable libc_$libc_type
5078 probe_libc host_
5079 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5080
5081 case $libc_type in
5082     bionic)
5083         add_compat strtod.o strtod=avpriv_strtod
5084         ;;
5085 esac
5086
5087 # hacks for compiler/libc/os combinations
5088
5089 if enabled_all tms470 libc_glibc; then
5090     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5091     add_cppflags -D__USER_LABEL_PREFIX__=
5092     add_cppflags -D__builtin_memset=memset
5093     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5094     add_cflags   -pds=48    # incompatible redefinition of macro
5095 fi
5096
5097 if enabled_all ccc libc_glibc; then
5098     add_ldflags -Wl,-z,now  # calls to libots crash without this
5099 fi
5100
5101 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5102     add_cppflags '-I\$(SRC_PATH)/compat/float'
5103
5104 esc(){
5105     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5106 }
5107
5108 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5109
5110 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5111
5112 set_default libdir
5113 : ${shlibdir_default:="$libdir"}
5114 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5115
5116 set_default $PATHS_LIST
5117 set_default nm
5118
5119 # we need to build at least one lib type
5120 if ! enabled_any static shared; then
5121     cat <<EOF
5122 At least one library type must be built.
5123 Specify --enable-static to build the static libraries or --enable-shared to
5124 build the shared libraries as well. To only build the shared libraries specify
5125 --disable-static in addition to --enable-shared.
5126 EOF
5127     exit 1
5128 fi
5129
5130 die_license_disabled() {
5131     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5132 }
5133
5134 die_license_disabled_gpl() {
5135     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5136 }
5137
5138 die_license_disabled gpl frei0r
5139 die_license_disabled gpl libcdio
5140 die_license_disabled gpl librubberband
5141 die_license_disabled gpl libsmbclient
5142 die_license_disabled gpl libvidstab
5143 die_license_disabled gpl libx264
5144 die_license_disabled gpl libx265
5145 die_license_disabled gpl libxavs
5146 die_license_disabled gpl libxvid
5147 die_license_disabled gpl x11grab
5148
5149 die_license_disabled nonfree libnpp
5150 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5151 enabled gpl && die_license_disabled_gpl nonfree openssl
5152
5153 die_license_disabled version3 gmp
5154 die_license_disabled version3 libopencore_amrnb
5155 die_license_disabled version3 libopencore_amrwb
5156 die_license_disabled version3 libsmbclient
5157 die_license_disabled version3 libvo_amrwbenc
5158
5159 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5160
5161 disabled optimizations || check_cflags -fomit-frame-pointer
5162
5163 enable_weak_pic() {
5164     disabled pic && return
5165     enable pic
5166     add_cppflags -DPIC
5167     case "$target_os" in
5168     mingw*|cygwin*)
5169         ;;
5170     *)
5171         add_cflags -fPIC
5172         ;;
5173     esac
5174     add_asflags  -fPIC
5175 }
5176
5177 enabled pic && enable_weak_pic
5178
5179 check_cc <<EOF || die "Symbol mangling check failed."
5180 int ff_extern;
5181 EOF
5182 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5183 extern_prefix=${sym%%ff_extern*}
5184
5185 check_cc <<EOF && enable_weak inline_asm
5186 void foo(void) { __asm__ volatile ("" ::); }
5187 EOF
5188
5189 _restrict=
5190 for restrict_keyword in restrict __restrict__ __restrict; do
5191     check_cc <<EOF && _restrict=$restrict_keyword && break
5192 void foo(char * $restrict_keyword p);
5193 EOF
5194 done
5195
5196 check_cc <<EOF && enable pragma_deprecated
5197 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5198 EOF
5199
5200 check_cc <<EOF && enable attribute_packed
5201 struct { int x; } __attribute__((packed)) x;
5202 EOF
5203
5204 check_cc <<EOF && enable attribute_may_alias
5205 union { int x; } __attribute__((may_alias)) x;
5206 EOF
5207
5208 check_cc <<EOF || die "endian test failed"
5209 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5210 EOF
5211 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5212
5213 if ! enabled ppc64 || enabled bigendian; then
5214     disable vsx
5215 fi
5216
5217 check_gas() {
5218     log "check_gas using '$as' as AS"
5219     # :vararg is used on aarch64, arm and ppc altivec
5220     check_as <<EOF || return 1
5221 .macro m n, y:vararg=0
5222 \n: .int \y
5223 .endm
5224 m x
5225 EOF
5226     # .altmacro is only used in arm asm
5227     ! enabled arm || check_as <<EOF || return 1
5228 .altmacro
5229 EOF
5230     enable gnu_as
5231     return 0
5232 }
5233
5234 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5235     nogas=:
5236     enabled_any arm aarch64 && nogas=die
5237     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5238     as_noop=-v
5239
5240     case $as_type in
5241         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5242         gcc)  gaspp_as_type=gas ;;
5243         *)    gaspp_as_type=$as_type ;;
5244     esac
5245
5246     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5247
5248     test "${as#*gas-preprocessor.pl}" != "$as" ||
5249     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5250         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5251
5252     if ! check_gas ; then
5253         as=${gas:=$as}
5254         check_gas || \
5255             $nogas "GNU assembler not found, install/update gas-preprocessor"
5256     fi
5257
5258     check_as <<EOF && enable as_func
5259 .func test
5260 .endfunc
5261 EOF
5262 fi
5263
5264 check_inline_asm inline_asm_labels '"1:\n"'
5265
5266 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5267
5268 if enabled aarch64; then
5269     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5270     # internal assembler in clang 3.3 does not support this instruction
5271     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5272     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5273
5274     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5275
5276 elif enabled alpha; then
5277
5278     check_cflags -mieee
5279
5280 elif enabled arm; then
5281
5282     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5283
5284     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5285 float func(float a, float b){ return a+b; }
5286 EOF
5287
5288     enabled thumb && check_cflags -mthumb || check_cflags -marm
5289
5290     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5291         enable vfp_args
5292     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5293         enable vfp_args
5294     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5295         case "${cross_prefix:-$cc}" in
5296             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5297             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5298 __asm__ (".eabi_attribute 28, 1");
5299 int main(void) { return 0; }
5300 EOF
5301         esac
5302         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5303     fi
5304
5305     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5306     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5307     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5308     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5309     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5310     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5311     enabled setend  && check_insn setend  'setend be'
5312
5313     [ $target_os = linux ] || [ $target_os = android ] ||
5314         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5315             $ARCH_EXT_LIST_ARM
5316
5317     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5318
5319     check_as <<EOF && enable as_dn_directive
5320 ra .dn d0.i16
5321 .unreq ra
5322 EOF
5323     check_as <<EOF && enable as_fpu_directive
5324 .fpu neon
5325 EOF
5326
5327     # llvm's integrated assembler supports .object_arch from llvm 3.5
5328     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5329 .object_arch armv4
5330 EOF
5331
5332     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5333
5334 elif enabled mips; then
5335
5336     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5337     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5338     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5339
5340     # Enable minimum ISA based on selected options
5341     if enabled mips64; then
5342         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5343         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5344         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5345     else
5346         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5347         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5348         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5349         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5350     fi
5351
5352     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5353     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5354     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5355     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5356     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5357
5358 elif enabled parisc; then
5359
5360     if enabled gcc; then
5361         case $($cc -dumpversion) in
5362             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5363         esac
5364     fi
5365
5366 elif enabled ppc; then
5367
5368     enable local_aligned_8 local_aligned_16 local_aligned_32
5369
5370     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5371     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5372     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5373     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5374
5375     # AltiVec flags: The FSF version of GCC differs from the Apple version
5376     if enabled altivec; then
5377         check_cflags -maltivec -mabi=altivec &&
5378         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5379         check_cflags -faltivec
5380
5381         # check if our compiler supports Motorola AltiVec C API
5382         check_cc <<EOF || disable altivec
5383 $inc_altivec_h
5384 int main(void) {
5385     vector signed int v1 = (vector signed int) { 0 };
5386     vector signed int v2 = (vector signed int) { 1 };
5387     v1 = vec_add(v1, v2);
5388     return 0;
5389 }
5390 EOF
5391
5392         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5393     fi
5394
5395     if enabled vsx; then
5396         check_cflags -mvsx &&
5397         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5398     fi
5399
5400     if enabled power8; then
5401         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5402     fi
5403
5404 elif enabled x86; then
5405
5406     check_builtin rdtsc    intrin.h   "__rdtsc()"
5407     check_builtin mm_empty mmintrin.h "_mm_empty()"
5408
5409     enable local_aligned_8 local_aligned_16 local_aligned_32
5410
5411     # check whether EBP is available on x86
5412     # As 'i' is stored on the stack, this program will crash
5413     # if the base pointer is used to access it because the
5414     # base pointer is cleared in the inline assembly code.
5415     check_exec_crash <<EOF && enable ebp_available
5416 volatile int i=0;
5417 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5418 return i;
5419 EOF
5420
5421     # check whether EBX is available on x86
5422     check_inline_asm ebx_available '""::"b"(0)' &&
5423         check_inline_asm ebx_available '"":::"%ebx"'
5424
5425     # check whether xmm clobbers are supported
5426     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5427
5428     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5429         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5430
5431     # check whether binutils is new enough to compile SSSE3/MMXEXT
5432     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5433     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5434
5435     if ! disabled_any asm mmx yasm; then
5436         if check_cmd $yasmexe --version; then
5437             enabled x86_64 && yasm_extra="-m amd64"
5438             yasm_debug="-g dwarf2"
5439         elif check_cmd nasm -v; then
5440             yasmexe=nasm
5441             yasm_debug="-g -F dwarf"
5442             if enabled x86_64; then
5443                 case "$objformat" in
5444                     elf)   objformat=elf64 ;;
5445                     win32) objformat=win64 ;;
5446                 esac
5447             fi
5448         fi
5449
5450         YASMFLAGS="-f $objformat $yasm_extra"
5451         enabled pic               && append YASMFLAGS "-DPIC"
5452         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5453         case "$objformat" in
5454             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5455         esac
5456
5457         check_yasm "movbe ecx, [5]" && enable yasm ||
5458             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5459         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5460         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5461         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5462         check_yasm "CPU amdnop" || disable cpunop
5463     fi
5464
5465     case "$cpu" in
5466         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5467             disable fast_clz
5468         ;;
5469     esac
5470
5471 fi
5472
5473 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5474
5475 check_ldflags -Wl,--as-needed
5476 check_ldflags -Wl,-z,noexecstack
5477
5478 if check_func dlopen && check_func dlsym; then
5479     ldl=
5480 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5481     ldl=-ldl
5482 fi
5483
5484 avisynth_demuxer_extralibs='$ldl'
5485 cuda_extralibs='$ldl'
5486 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5487 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5488 frei0r_filter_extralibs='$ldl'
5489 frei0r_src_filter_extralibs='$ldl'
5490 ladspa_filter_extralibs='$ldl'
5491 nvenc_extralibs='$ldl'
5492 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5493 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5494
5495 if ! disabled network; then
5496     check_func getaddrinfo $network_extralibs
5497     check_func inet_aton $network_extralibs
5498
5499     check_type netdb.h "struct addrinfo"
5500     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5501     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5502     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5503     check_type poll.h "struct pollfd"
5504     check_type netinet/sctp.h "struct sctp_event_subscribe"
5505     check_struct "sys/socket.h" "struct msghdr" msg_flags
5506     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5507     check_type netinet/in.h "struct sockaddr_in6"
5508     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5509     check_type "sys/types.h sys/socket.h" socklen_t
5510
5511     # Prefer arpa/inet.h over winsock2
5512     if check_header arpa/inet.h ; then
5513         check_func closesocket
5514     elif check_header winsock2.h ; then
5515         check_func_headers winsock2.h closesocket -lws2 &&
5516             network_extralibs="-lws2" ||
5517         { check_func_headers winsock2.h closesocket -lws2_32 &&
5518             network_extralibs="-lws2_32"; } || disable winsock2_h network
5519         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5520
5521         check_type ws2tcpip.h socklen_t
5522         check_type ws2tcpip.h "struct addrinfo"
5523         check_type ws2tcpip.h "struct group_source_req"
5524         check_type ws2tcpip.h "struct ip_mreq_source"
5525         check_type ws2tcpip.h "struct ipv6_mreq"
5526         check_type winsock2.h "struct pollfd"
5527         check_struct winsock2.h "struct sockaddr" sa_len
5528         check_type ws2tcpip.h "struct sockaddr_in6"
5529         check_type ws2tcpip.h "struct sockaddr_storage"
5530     else
5531         disable network
5532     fi
5533 fi
5534
5535 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5536 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5537 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5538 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5539 check_builtin sarestart signal.h "SA_RESTART"
5540 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5541 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5542 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5543 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5544 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5545
5546 case "$custom_allocator" in
5547     jemalloc)
5548         # jemalloc by default does not use a prefix
5549         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5550     ;;
5551     tcmalloc)
5552         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5553         malloc_prefix=tc_
5554     ;;
5555 esac
5556
5557 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5558 check_func  ${malloc_prefix}memalign            && enable memalign
5559 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5560
5561 check_func  access
5562 check_func_headers stdlib.h arc4random
5563 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5564 check_func  fcntl
5565 check_func  fork
5566 check_func  gethrtime
5567 check_func  getopt
5568 check_func  getrusage
5569 check_func  gettimeofday
5570 check_func  isatty
5571 check_func  mach_absolute_time
5572 check_func  mkstemp
5573 check_func  mmap
5574 check_func  mprotect
5575 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5576 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5577 check_func  sched_getaffinity
5578 check_func  setrlimit
5579 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5580 check_func  strerror_r
5581 check_func  sysconf
5582 check_func  sysctl
5583 check_func  usleep
5584
5585 check_func_headers conio.h kbhit
5586 check_func_headers io.h setmode
5587 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5588 check_func_headers stdlib.h getenv
5589 check_func_headers sys/stat.h lstat
5590
5591 check_func_headers windows.h CoTaskMemFree -lole32
5592 check_func_headers windows.h GetProcessAffinityMask
5593 check_func_headers windows.h GetProcessTimes
5594 check_func_headers windows.h GetSystemTimeAsFileTime
5595 check_func_headers windows.h LoadLibrary
5596 check_func_headers windows.h MapViewOfFile
5597 check_func_headers windows.h PeekNamedPipe
5598 check_func_headers windows.h SetConsoleTextAttribute
5599 check_func_headers windows.h SetConsoleCtrlHandler
5600 check_func_headers windows.h Sleep
5601 check_func_headers windows.h VirtualAlloc
5602 check_struct windows.h "CONDITION_VARIABLE" Ptr
5603 check_func_headers glob.h glob
5604 enabled xlib &&
5605     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5606
5607 check_header AudioToolbox/AudioToolbox.h
5608 check_header direct.h
5609 check_header dirent.h
5610 check_header dlfcn.h
5611 check_header d3d11.h
5612 check_header dxva.h
5613 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5614 check_header io.h
5615 check_header libcrystalhd/libcrystalhd_if.h
5616 check_header mach/mach_time.h
5617 check_header malloc.h
5618 check_header net/udplite.h
5619 check_header poll.h
5620 check_header sys/mman.h
5621 check_header sys/param.h
5622 check_header sys/resource.h
5623 check_header sys/select.h
5624 check_header sys/time.h
5625 check_header sys/un.h
5626 check_header termios.h
5627 check_header unistd.h
5628 check_header valgrind/valgrind.h
5629 check_header vdpau/vdpau.h
5630 check_header vdpau/vdpau_x11.h
5631 check_header VideoDecodeAcceleration/VDADecoder.h
5632 check_header VideoToolbox/VideoToolbox.h
5633 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5634 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5635 check_header windows.h
5636 check_header X11/extensions/XvMClib.h
5637 check_header asm/types.h
5638
5639 # it seems there are versions of clang in some distros that try to use the
5640 # gcc headers, which explodes for stdatomic
5641 # so we also check that atomics actually work here
5642 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5643
5644 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5645 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5646 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5647 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5648
5649 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5650
5651 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5652 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5653 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5654 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5655 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5656
5657 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5658 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5659 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5660 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5661 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5662 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5663 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5664 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5665
5666 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5667
5668 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5669
5670 if ! disabled w32threads && ! enabled pthreads; then
5671     check_func_headers "windows.h process.h" _beginthreadex &&
5672         enable w32threads || disable w32threads
5673     if ! enabled w32threads && enabled winrt; then
5674         check_func_headers "windows.h" CreateThread &&
5675             enable w32threads || disable w32threads
5676     fi
5677 fi
5678
5679 # check for some common methods of building with pthread support
5680 # do this before the optional library checks as some of them require pthreads
5681 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5682     enable pthreads
5683     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5684         add_cflags -pthread
5685         add_extralibs -pthread
5686     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5687         add_cflags -pthreads
5688         add_extralibs -pthreads
5689     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5690         add_cflags -ldl -pthread
5691         add_extralibs -ldl -pthread
5692     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5693         add_extralibs -lpthreadGC2
5694     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5695         :
5696     elif ! check_func pthread_join && ! check_func pthread_create; then
5697         disable pthreads
5698     fi
5699     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5700 fi
5701
5702
5703 if enabled pthreads; then
5704   check_func pthread_cancel
5705 fi
5706
5707 enabled pthreads &&
5708     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5709
5710 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5711 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5712 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5713
5714 check_lib math.h sin -lm && LIBM="-lm"
5715 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5716
5717 atan2f_args=2
5718 copysign_args=2
5719 hypot_args=2
5720 ldexpf_args=2
5721 powf_args=2
5722
5723 for func in $MATH_FUNCS; do
5724     eval check_mathfunc $func \${${func}_args:-1}
5725 done
5726
5727 for func in $COMPLEX_FUNCS; do
5728     eval check_complexfunc $func \${${func}_args:-1}
5729 done
5730
5731 # these are off by default, so fail if requested and not available
5732 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5733 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5734                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5735 enabled cuda              && check_header cuda.h # this is not a dependency
5736 enabled cuvid             && { enabled cuda ||
5737                                die "ERROR: CUVID requires CUDA"; }
5738 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5739 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5740 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5741 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5742                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5743 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5744 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5745 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5746 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5747                                check_lib2 "dlfcn.h" dlopen -ldl; }
5748 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5749 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5750 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5751 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5752 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5753 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5754                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5755                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5756 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5757 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5758                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5759                                  warn "using libfdk without pkg-config"; } }
5760 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"
5761 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5762 enabled fontconfig        && enable libfontconfig
5763 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5764 enabled libfreetype       && require_libfreetype
5765 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5766 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5767 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5768                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5769                                done || die "ERROR: libgsm not found"; }
5770 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5771 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5772 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5773 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5774 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5775 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5776 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5777 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5778 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5779 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5780                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5781                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5782                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5783 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5784 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5785                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5786                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5787                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5788                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5789                                die "ERROR: libopenjpeg not found"; }
5790 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5791 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5792 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5793 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5794 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5795 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5796 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5797 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5798                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5799 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5800 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5801 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5802 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5803 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5804 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5805 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5806                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5807                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5808 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5809 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5810 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5811 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5812
5813 enabled libvpx            && {
5814     enabled libvpx_vp8_decoder && {
5815         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5816             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5817                 die "ERROR: libvpx decoder version must be >=0.9.1";
5818     }
5819     enabled libvpx_vp8_encoder && {
5820         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5821             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5822                 die "ERROR: libvpx encoder version must be >=0.9.7";
5823     }
5824     enabled libvpx_vp9_decoder && {
5825         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5826             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5827                 disable libvpx_vp9_decoder;
5828     }
5829     enabled libvpx_vp9_encoder && {
5830         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5831             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5832                 disable libvpx_vp9_encoder;
5833     }
5834     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5835         die "libvpx enabled but no supported decoders found"
5836     fi
5837 }
5838
5839 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5840 enabled libwebp           && {
5841     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5842     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5843 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5844                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5845                                  warn "using libx264 without pkg-config"; } } &&
5846                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5847                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5848                              { check_cpp_condition x264.h "X264_MPEG2" &&
5849                                enable libx262; }
5850 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5851                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5852                                die "ERROR: libx265 version must be >= 68."; }
5853 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5854 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5855 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5856 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5857 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5858                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5859                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5860 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5861 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5862                                 { ! enabled cross_compile && {
5863                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5864                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5865                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5866                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5867                                die "ERROR: mmal not found"; }
5868 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5869
5870 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5871 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5872                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5873                                die "ERROR: openal not found"; } &&
5874                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5875                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5876 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5877                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5878                                die "ERROR: opencl not found"; } &&
5879                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5880                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5881                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5882 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5883                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5884                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5885                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5886                                die "ERROR: opengl not found."
5887                              }
5888 enabled omx_rpi && enable omx
5889 enabled omx               && { check_header OMX_Core.h ||
5890                                 { ! enabled cross_compile && enabled omx_rpi && {
5891                                     add_cflags -isystem/opt/vc/include/IL ; }
5892                                 check_header OMX_Core.h ; } ||
5893                                die "ERROR: OpenMAX IL headers not found"; }
5894 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5895                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5896                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5897                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5898                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5899                                die "ERROR: openssl not found"; }
5900 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5901
5902 # libdc1394 check
5903 if enabled libdc1394; then
5904     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5905         enable libdc1394_2; } ||
5906     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5907         enable libdc1394_1; } ||
5908     die "ERROR: No version of libdc1394 found "
5909 fi
5910
5911 if enabled gcrypt; then
5912     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5913     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5914         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5915         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5916         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5917             die "ERROR: gcrypt not found"
5918         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5919     else
5920         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5921     fi
5922 fi
5923
5924 disabled sdl && disable sdl2
5925 if ! disabled sdl2; then
5926     SDL2_CONFIG="${cross_prefix}sdl2-config"
5927     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5928         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5929         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5930         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5931     else
5932       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5933         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5934         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5935         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5936         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5937         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5938       fi
5939     fi
5940     if test $target_os = "mingw32"; then
5941         sdl2_libs="$sdl2_libs -mconsole"
5942     fi
5943 fi
5944 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5945
5946 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5947     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5948     enable securetransport; }
5949
5950 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5951                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5952
5953 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5954 enabled makeinfo \
5955     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5956     && enable makeinfo_html || disable makeinfo_html
5957 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5958 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5959 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5960 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5961
5962 check_header linux/fb.h
5963 check_header linux/videodev.h
5964 check_header linux/videodev2.h
5965 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5966
5967 check_header sys/videoio.h
5968 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5969
5970 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5971 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5972 # w32api 3.12 had it defined wrong
5973 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5974
5975 check_type "dshow.h" IBaseFilter
5976
5977 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5978 { check_header dev/bktr/ioctl_meteor.h &&
5979   check_header dev/bktr/ioctl_bt848.h; } ||
5980 { check_header machine/ioctl_meteor.h &&
5981   check_header machine/ioctl_bt848.h; } ||
5982 { check_header dev/video/meteor/ioctl_meteor.h &&
5983   check_header dev/video/bktr/ioctl_bt848.h; } ||
5984 check_header dev/ic/bt8xx.h
5985
5986 check_header sndio.h
5987 if check_struct sys/soundcard.h audio_buf_info bytes; then
5988     enable_safe sys/soundcard.h
5989 else
5990     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5991     #include <sys/soundcard.h>
5992     audio_buf_info abc;
5993 EOF
5994 fi
5995 check_header soundcard.h
5996
5997 enabled_any alsa_indev alsa_outdev &&
5998     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5999
6000 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
6001     check_func jack_port_get_latency_range -ljack
6002
6003 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
6004
6005 if enabled libcdio; then
6006     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6007     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6008     die "ERROR: No usable libcdio/cdparanoia found"
6009 fi
6010
6011 enabled xlib &&
6012     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
6013
6014 if ! disabled libxcb; then
6015     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6016         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6017     } && disable x11grab && enable libxcb
6018
6019 if enabled libxcb; then
6020     disabled libxcb_shm || {
6021         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6022             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6023         } && check_header sys/shm.h && enable libxcb_shm; }
6024
6025     disabled libxcb_xfixes || {
6026         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6027             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6028         } && enable libxcb_xfixes; }
6029
6030     disabled libxcb_shape || {
6031         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6032             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6033         } && enable libxcb_shape; }
6034
6035     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6036     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6037 fi
6038 fi
6039
6040 if enabled x11grab; then
6041     enabled xlib || die "ERROR: Xlib not found"
6042     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
6043     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
6044 fi
6045
6046 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6047
6048 enabled dxva2api_h &&
6049     check_cc <<EOF && enable dxva2api_cobj
6050 #define _WIN32_WINNT 0x0600
6051 #define COBJMACROS
6052 #include <windows.h>
6053 #include <d3d9.h>
6054 #include <dxva2api.h>
6055 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6056 EOF
6057
6058 enabled vaapi &&
6059     check_lib va/va.h vaInitialize -lva ||
6060     disable vaapi
6061
6062 enabled vaapi &&
6063     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6064     disable vaapi
6065
6066 if enabled vaapi ; then
6067     enabled xlib &&
6068     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6069     enable vaapi_x11
6070
6071     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6072     enable vaapi_drm
6073 fi
6074
6075 enabled vdpau &&
6076     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6077     disable vdpau
6078
6079 enabled vdpau && enabled xlib &&
6080     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6081     enable vdpau_x11
6082
6083 if enabled x86; then
6084     case $target_os in
6085         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6086             ;;
6087         *)
6088             disable cuda cuvid nvenc
6089             ;;
6090     esac
6091 else
6092     disable cuda cuvid nvenc
6093 fi
6094
6095 enabled nvenc &&
6096     check_cc -I$source_path <<EOF || disable nvenc
6097 #include "compat/nvenc/nvEncodeAPI.h"
6098 NV_ENCODE_API_FUNCTION_LIST flist;
6099 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6100 int main(void) { return 0; }
6101 EOF
6102
6103 # Funny iconv installations are not unusual, so check it after all flags have been set
6104 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6105
6106 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6107
6108 # add some useful compiler flags if supported
6109 check_cflags -Wdeclaration-after-statement
6110 check_cflags -Wall
6111 check_cflags -Wdisabled-optimization
6112 check_cflags -Wpointer-arith
6113 check_cflags -Wredundant-decls
6114 check_cflags -Wwrite-strings
6115 check_cflags -Wtype-limits
6116 check_cflags -Wundef
6117 check_cflags -Wmissing-prototypes
6118 check_cflags -Wno-pointer-to-int-cast
6119 check_cflags -Wstrict-prototypes
6120 check_cflags -Wempty-body
6121 enabled extra_warnings && check_cflags -Winline
6122 enabled extra_warnings && check_cflags -Wcast-qual
6123
6124 check_disable_warning(){
6125     warning_flag=-W${1#-Wno-}
6126     test_cflags $warning_flag && add_cflags $1
6127 }
6128
6129 check_disable_warning -Wno-parentheses
6130 check_disable_warning -Wno-switch
6131 check_disable_warning -Wno-format-zero-length
6132 check_disable_warning -Wno-pointer-sign
6133 check_disable_warning -Wno-unused-const-variable
6134
6135 # add some linker flags
6136 check_ldflags -Wl,--warn-common
6137 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6138 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6139 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6140 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6141
6142 # add some strip flags
6143 # -wN '..@*' is more selective than -x, but not available everywhere.
6144 check_stripflags -wN \'..@*\' || check_stripflags -x
6145
6146 enabled neon_clobber_test &&
6147     check_ldflags -Wl,--wrap,avcodec_open2              \
6148                   -Wl,--wrap,avcodec_decode_audio4      \
6149                   -Wl,--wrap,avcodec_decode_video2      \
6150                   -Wl,--wrap,avcodec_decode_subtitle2   \
6151                   -Wl,--wrap,avcodec_encode_audio2      \
6152                   -Wl,--wrap,avcodec_encode_video2      \
6153                   -Wl,--wrap,avcodec_send_packet        \
6154                   -Wl,--wrap,avcodec_receive_frame      \
6155                   -Wl,--wrap,avcodec_send_frame         \
6156                   -Wl,--wrap,avcodec_receive_packet     \
6157                   -Wl,--wrap,avcodec_encode_subtitle    \
6158                   -Wl,--wrap,swr_convert                \
6159                   -Wl,--wrap,avresample_convert ||
6160     disable neon_clobber_test
6161
6162 enabled xmm_clobber_test &&
6163     check_ldflags -Wl,--wrap,avcodec_open2              \
6164                   -Wl,--wrap,avcodec_decode_audio4      \
6165                   -Wl,--wrap,avcodec_decode_video2      \
6166                   -Wl,--wrap,avcodec_decode_subtitle2   \
6167                   -Wl,--wrap,avcodec_encode_audio2      \
6168                   -Wl,--wrap,avcodec_encode_video2      \
6169                   -Wl,--wrap,avcodec_encode_subtitle    \
6170                   -Wl,--wrap,avcodec_send_packet        \
6171                   -Wl,--wrap,avcodec_receive_frame      \
6172                   -Wl,--wrap,avcodec_send_frame         \
6173                   -Wl,--wrap,avcodec_receive_packet     \
6174                   -Wl,--wrap,swr_convert                \
6175                   -Wl,--wrap,avresample_convert         \
6176                   -Wl,--wrap,sws_scale ||
6177     disable xmm_clobber_test
6178
6179 check_ld "cc" <<EOF && enable proper_dce
6180 extern const int array[512];
6181 static inline int func(void) { return array[0]; }
6182 int main(void) { return 0; }
6183 EOF
6184
6185 if enabled proper_dce; then
6186     echo "X { local: *; };" > $TMPV
6187     if test_ldflags -Wl,${version_script},$TMPV; then
6188         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6189         check_cc <<EOF && enable symver_asm_label
6190 void ff_foo(void) __asm__ ("av_foo@VERSION");
6191 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6192 EOF
6193         check_cc <<EOF && enable symver_gnu_asm
6194 __asm__(".symver ff_foo,av_foo@VERSION");
6195 void ff_foo(void) {}
6196 EOF
6197     fi
6198 fi
6199
6200 if [ -z "$optflags" ]; then
6201     if enabled small; then
6202         optflags=$cflags_size
6203     elif enabled optimizations; then
6204         optflags=$cflags_speed
6205     else
6206         optflags=$cflags_noopt
6207     fi
6208 fi
6209
6210 check_optflags(){
6211     check_cflags "$@"
6212     enabled lto && check_ldflags "$@"
6213 }
6214
6215
6216 if enabled lto; then
6217     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6218     check_cflags  -flto
6219     check_ldflags -flto $cpuflags
6220     disable inline_asm_direct_symbol_refs
6221 fi
6222
6223 check_optflags $optflags
6224 check_optflags -fno-math-errno
6225 check_optflags -fno-signed-zeros
6226
6227 enabled ftrapv && check_cflags -ftrapv
6228
6229 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6230 int x;
6231 EOF
6232
6233
6234 if enabled icc; then
6235     # Just warnings, no remarks
6236     check_cflags -w1
6237     # -wd: Disable following warnings
6238     # 144, 167, 556: -Wno-pointer-sign
6239     # 188: enumerated type mixed with another type
6240     # 1292: attribute "foo" ignored
6241     # 1419: external declaration in primary source file
6242     # 10006: ignoring unknown option -fno-signed-zeros
6243     # 10148: ignoring unknown option -Wno-parentheses
6244     # 10156: ignoring option '-W'; no argument required
6245     # 13200: No EMMS instruction before call to function
6246     # 13203: No EMMS instruction before return from function
6247     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6248     # 11030: Warning unknown option --as-needed
6249     # 10156: ignoring option '-export'; no argument required
6250     check_ldflags -wd10156,11030
6251     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6252     enable ebp_available
6253     # The test above does not test linking
6254     enabled lto && disable symver_asm_label
6255     if enabled x86_32; then
6256         icc_version=$($cc -dumpversion)
6257         test ${icc_version%%.*} -ge 11 &&
6258             check_cflags -falign-stack=maintain-16-byte ||
6259             disable aligned_stack
6260     fi
6261 elif enabled ccc; then
6262     # disable some annoying warnings
6263     add_cflags -msg_disable bitnotint
6264     add_cflags -msg_disable mixfuncvoid
6265     add_cflags -msg_disable nonstandcast
6266     add_cflags -msg_disable unsupieee
6267 elif enabled gcc; then
6268     check_optflags -fno-tree-vectorize
6269     check_cflags -Werror=format-security
6270     check_cflags -Werror=implicit-function-declaration
6271     check_cflags -Werror=missing-prototypes
6272     check_cflags -Werror=return-type
6273     check_cflags -Werror=vla
6274     check_cflags -Wformat
6275     check_cflags -fdiagnostics-color=auto
6276     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6277 elif enabled llvm_gcc; then
6278     check_cflags -mllvm -stack-alignment=16
6279 elif enabled clang; then
6280     check_cflags -mllvm -stack-alignment=16
6281     check_cflags -mstack-alignment=16
6282     check_cflags -Qunused-arguments
6283     check_cflags -Werror=implicit-function-declaration
6284     check_cflags -Werror=missing-prototypes
6285     check_cflags -Werror=return-type
6286 elif enabled cparser; then
6287     add_cflags -Wno-missing-variable-declarations
6288     add_cflags -Wno-empty-statement
6289 elif enabled armcc; then
6290     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6291     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6292     # 2523: use of inline assembly is deprecated
6293     add_cflags -W${armcc_opt},--diag_suppress=2523
6294     add_cflags -W${armcc_opt},--diag_suppress=1207
6295     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6296     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6297     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6298     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6299 elif enabled tms470; then
6300     add_cflags -pds=824 -pds=837
6301     disable inline_asm
6302 elif enabled pathscale; then
6303     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6304 elif enabled_any msvc icl; then
6305     enabled x86_32 && disable aligned_stack
6306     enabled_all x86_32 debug && add_cflags -Oy-
6307     enabled debug && add_ldflags -debug
6308     enable pragma_deprecated
6309     if enabled icl; then
6310         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6311         # (correctly) on icl 13.x.
6312         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6313             add_cflags -Qansi-alias
6314         # Some inline asm is not compilable in debug
6315         if enabled debug; then
6316             disable ebp_available
6317             disable ebx_available
6318         fi
6319     fi
6320     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6321     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6322     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6323     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6324     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6325     # MSVC 2013 and newer can handle it fine.
6326     # If this declspec fails, force including stdlib.h before the restrict redefinition
6327     # happens in config.h.
6328     if [ $_restrict != restrict ]; then
6329         check_cc <<EOF || add_cflags -FIstdlib.h
6330 __declspec($_restrict) void* foo(int);
6331 EOF
6332     fi
6333     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6334     check_func strtoull || add_cflags -Dstrtoull=_strtoui64
6335     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6336     # Issue has been fixed in MSVC v19.00.24218.
6337     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6338         check_cflags -d2SSAOptimizer-
6339     # enable utf-8 source processing on VS2015 U2 and newer
6340     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6341         add_cflags -utf-8
6342 fi
6343
6344 for pfx in "" host_; do
6345     varname=${pfx%_}cc_type
6346     eval "type=\$$varname"
6347     if [ $type = "msvc" ]; then
6348         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6349 static inline int foo(int a) { return a; }
6350 EOF
6351     fi
6352 done
6353
6354 case $as_type in
6355     clang)
6356         add_asflags -Qunused-arguments
6357     ;;
6358 esac
6359
6360 case $ld_type in
6361     clang)
6362         check_ldflags -Qunused-arguments
6363     ;;
6364 esac
6365
6366 case $target_os in
6367     osf1)
6368         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6369     ;;
6370     plan9)
6371         add_cppflags -Dmain=plan9_main
6372     ;;
6373 esac
6374
6375 enable frame_thread_encoder
6376
6377 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6378
6379 check_deps $CONFIG_LIST       \
6380            $CONFIG_EXTRA      \
6381            $HAVE_LIST         \
6382            $ALL_COMPONENTS    \
6383
6384 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"
6385
6386
6387 if test $target_os = "haiku"; then
6388     disable memalign
6389     disable posix_memalign
6390 fi
6391
6392 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6393     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6394     enable dxva2_lib
6395
6396 ! enabled_any memalign posix_memalign aligned_malloc &&
6397     enabled simd_align_16 && enable memalign_hack
6398
6399 # add_dep lib dep
6400 # -> enable ${lib}_deps_${dep}
6401 # -> add $dep to ${lib}_deps only once
6402 add_dep() {
6403     lib=$1
6404     dep=$2
6405     enabled "${lib}_deps_${dep}" && return 0
6406     enable  "${lib}_deps_${dep}"
6407     prepend "${lib}_deps" $dep
6408 }
6409
6410 # merge deps lib components
6411 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6412 merge_deps() {
6413     lib=$1
6414     shift
6415     for comp in $*; do
6416         enabled $comp || continue
6417         eval "dep=\"\$${comp}_deps\""
6418         for d in $dep; do
6419             add_dep $lib $d
6420         done
6421     done
6422 }
6423
6424 merge_deps libavfilter $FILTER_LIST
6425
6426 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6427
6428 for thread in $THREADS_LIST; do
6429     if enabled $thread; then
6430         test -n "$thread_type" &&
6431             die "ERROR: Only one thread type must be selected." ||
6432             thread_type="$thread"
6433     fi
6434 done
6435
6436 if disabled stdatomic_h; then
6437     if enabled atomics_gcc; then
6438         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6439     elif enabled atomics_win32; then
6440         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6441     elif enabled atomics_suncc; then
6442         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6443     elif enabled pthreads; then
6444         add_compat atomics/pthread/stdatomic.o
6445         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6446     else
6447         enabled threads && die "Threading is enabled, but no atomics are available"
6448         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6449     fi
6450 fi
6451
6452 # Check if requested libraries were found.
6453 for lib in $AUTODETECT_LIBS; do
6454     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6455 done
6456
6457 enabled zlib && add_cppflags -DZLIB_CONST
6458
6459 # conditional library dependencies, in linking order
6460 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6461 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6462 enabled aresample_filter    && prepend avfilter_deps "swresample"
6463 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6464 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6465 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6466 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6467 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6468 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6469 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6470 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6471 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6472 enabled pan_filter          && prepend avfilter_deps "swresample"
6473 enabled pp_filter           && prepend avfilter_deps "postproc"
6474 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6475 enabled resample_filter && prepend avfilter_deps "avresample"
6476 enabled sab_filter          && prepend avfilter_deps "swscale"
6477 enabled scale_filter    && prepend avfilter_deps "swscale"
6478 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6479 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6480 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6481 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6482 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6483 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6484 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6485 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6486 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6487
6488 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6489
6490 enabled opus_decoder    && prepend avcodec_deps "swresample"
6491
6492 expand_deps(){
6493     lib_deps=${1}_deps
6494     eval "deps=\$$lib_deps"
6495     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6496     unique $lib_deps
6497 }
6498
6499 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6500 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6501
6502 map 'expand_deps $v' $LIBRARY_LIST
6503
6504 echo "install prefix            $prefix"
6505 echo "source path               $source_path"
6506 echo "C compiler                $cc"
6507 echo "C library                 $libc_type"
6508 if test "$host_cc" != "$cc"; then
6509     echo "host C compiler           $host_cc"
6510     echo "host C library            $host_libc_type"
6511 fi
6512 echo "ARCH                      $arch ($cpu)"
6513 if test "$build_suffix" != ""; then
6514     echo "build suffix              $build_suffix"
6515 fi
6516 if test "$progs_suffix" != ""; then
6517     echo "progs suffix              $progs_suffix"
6518 fi
6519 if test "$extra_version" != ""; then
6520     echo "version string suffix     $extra_version"
6521 fi
6522 echo "big-endian                ${bigendian-no}"
6523 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6524 if enabled x86; then
6525     echo "${yasmexe}                      ${yasm-no}"
6526     echo "MMX enabled               ${mmx-no}"
6527     echo "MMXEXT enabled            ${mmxext-no}"
6528     echo "3DNow! enabled            ${amd3dnow-no}"
6529     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6530     echo "SSE enabled               ${sse-no}"
6531     echo "SSSE3 enabled             ${ssse3-no}"
6532     echo "AESNI enabled             ${aesni-no}"
6533     echo "AVX enabled               ${avx-no}"
6534     echo "XOP enabled               ${xop-no}"
6535     echo "FMA3 enabled              ${fma3-no}"
6536     echo "FMA4 enabled              ${fma4-no}"
6537     echo "i686 features enabled     ${i686-no}"
6538     echo "CMOV is fast              ${fast_cmov-no}"
6539     echo "EBX available             ${ebx_available-no}"
6540     echo "EBP available             ${ebp_available-no}"
6541 fi
6542 if enabled aarch64; then
6543     echo "NEON enabled              ${neon-no}"
6544     echo "VFP enabled               ${vfp-no}"
6545 fi
6546 if enabled arm; then
6547     echo "ARMv5TE enabled           ${armv5te-no}"
6548     echo "ARMv6 enabled             ${armv6-no}"
6549     echo "ARMv6T2 enabled           ${armv6t2-no}"
6550     echo "VFP enabled               ${vfp-no}"
6551     echo "NEON enabled              ${neon-no}"
6552     echo "THUMB enabled             ${thumb-no}"
6553 fi
6554 if enabled mips; then
6555     echo "MIPS FPU enabled          ${mipsfpu-no}"
6556     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6557     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6558     echo "MIPS MSA enabled          ${msa-no}"
6559     echo "LOONGSON MMI enabled      ${mmi-no}"
6560 fi
6561 if enabled ppc; then
6562     echo "AltiVec enabled           ${altivec-no}"
6563     echo "VSX enabled               ${vsx-no}"
6564     echo "POWER8 enabled            ${power8-no}"
6565     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6566     echo "dcbzl available           ${dcbzl-no}"
6567 fi
6568 echo "debug symbols             ${debug-no}"
6569 echo "strip symbols             ${stripping-no}"
6570 echo "optimize for size         ${small-no}"
6571 echo "optimizations             ${optimizations-no}"
6572 echo "static                    ${static-no}"
6573 echo "shared                    ${shared-no}"
6574 echo "postprocessing support    ${postproc-no}"
6575 echo "new filter support        ${avfilter-no}"
6576 echo "network support           ${network-no}"
6577 echo "threading support         ${thread_type-no}"
6578 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6579 echo "SDL2 support              ${sdl2-no}"
6580 echo "opencl enabled            ${opencl-no}"
6581 echo "JNI support               ${jni-no}"
6582 echo "texi2html enabled         ${texi2html-no}"
6583 echo "perl enabled              ${perl-no}"
6584 echo "pod2man enabled           ${pod2man-no}"
6585 echo "makeinfo enabled          ${makeinfo-no}"
6586 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6587 test -n "$random_seed" &&
6588     echo "random seed               ${random_seed}"
6589 echo
6590
6591 echo "Enabled programs:"
6592 print_enabled '' $PROGRAM_LIST | print_in_columns
6593 echo
6594
6595 echo "External libraries:"
6596 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6597 echo
6598
6599 echo "External libraries providing hardware acceleration:"
6600 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6601 echo
6602
6603 echo "Libraries:"
6604 print_enabled '' $LIBRARY_LIST | print_in_columns
6605 echo
6606
6607 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6608     echo "Enabled ${type}s:"
6609     eval list=\$$(toupper $type)_LIST
6610     print_enabled '_*' $list | print_in_columns
6611     echo
6612 done
6613
6614 license="LGPL version 2.1 or later"
6615 if enabled nonfree; then
6616     license="nonfree and unredistributable"
6617 elif enabled gplv3; then
6618     license="GPL version 3 or later"
6619 elif enabled lgplv3; then
6620     license="LGPL version 3 or later"
6621 elif enabled gpl; then
6622     license="GPL version 2 or later"
6623 fi
6624
6625 echo "License: $license"
6626
6627 echo "Creating config.mak, config.h, and doc/config.texi..."
6628
6629 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6630
6631 enabled stripping || strip="echo skipping strip"
6632
6633 config_files="$TMPH config.mak doc/config.texi"
6634
6635 cat > config.mak <<EOF
6636 # Automatically generated by configure - do not modify!
6637 ifndef FFMPEG_CONFIG_MAK
6638 FFMPEG_CONFIG_MAK=1
6639 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6640 prefix=$prefix
6641 LIBDIR=\$(DESTDIR)$libdir
6642 SHLIBDIR=\$(DESTDIR)$shlibdir
6643 INCDIR=\$(DESTDIR)$incdir
6644 BINDIR=\$(DESTDIR)$bindir
6645 DATADIR=\$(DESTDIR)$datadir
6646 DOCDIR=\$(DESTDIR)$docdir
6647 MANDIR=\$(DESTDIR)$mandir
6648 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6649 INSTALL_NAME_DIR=$install_name_dir
6650 SRC_PATH=$source_path
6651 SRC_LINK=$source_link
6652 ifndef MAIN_MAKEFILE
6653 SRC_PATH:=\$(SRC_PATH:.%=..%)
6654 endif
6655 CC_IDENT=$cc_ident
6656 ARCH=$arch
6657 INTRINSICS=$intrinsics
6658 CC=$cc
6659 CXX=$cxx
6660 AS=$as
6661 OBJCC=$objcc
6662 LD=$ld
6663 DEPCC=$dep_cc
6664 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6665 DEPAS=$as
6666 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6667 YASM=$yasmexe
6668 DEPYASM=$yasmexe
6669 AR=$ar
6670 ARFLAGS=$arflags
6671 AR_O=$ar_o
6672 RANLIB=$ranlib
6673 STRIP=$strip
6674 CP=cp -p
6675 LN_S=$ln_s
6676 CPPFLAGS=$CPPFLAGS
6677 CFLAGS=$CFLAGS
6678 CXXFLAGS=$CXXFLAGS
6679 OBJCFLAGS=$OBJCFLAGS
6680 ASFLAGS=$ASFLAGS
6681 AS_C=$AS_C
6682 AS_O=$AS_O
6683 OBJCC_C=$OBJCC_C
6684 OBJCC_E=$OBJCC_E
6685 OBJCC_O=$OBJCC_O
6686 CC_C=$CC_C
6687 CC_E=$CC_E
6688 CC_O=$CC_O
6689 CXX_C=$CXX_C
6690 CXX_O=$CXX_O
6691 LD_O=$LD_O
6692 LD_LIB=$LD_LIB
6693 LD_PATH=$LD_PATH
6694 DLLTOOL=$dlltool
6695 WINDRES=$windres
6696 DEPWINDRES=$dep_cc
6697 DOXYGEN=$doxygen
6698 LDFLAGS=$LDFLAGS
6699 LDEXEFLAGS=$LDEXEFLAGS
6700 LDLIBFLAGS=$LDLIBFLAGS
6701 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6702 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6703 YASMFLAGS=$YASMFLAGS
6704 BUILDSUF=$build_suffix
6705 PROGSSUF=$progs_suffix
6706 FULLNAME=$FULLNAME
6707 LIBPREF=$LIBPREF
6708 LIBSUF=$LIBSUF
6709 LIBNAME=$LIBNAME
6710 SLIBPREF=$SLIBPREF
6711 SLIBSUF=$SLIBSUF
6712 EXESUF=$EXESUF
6713 EXTRA_VERSION=$extra_version
6714 CCDEP=$CCDEP
6715 CXXDEP=$CXXDEP
6716 CCDEP_FLAGS=$CCDEP_FLAGS
6717 ASDEP=$ASDEP
6718 ASDEP_FLAGS=$ASDEP_FLAGS
6719 CC_DEPFLAGS=$CC_DEPFLAGS
6720 AS_DEPFLAGS=$AS_DEPFLAGS
6721 HOSTCC=$host_cc
6722 HOSTLD=$host_ld
6723 HOSTCFLAGS=$host_cflags
6724 HOSTCPPFLAGS=$host_cppflags
6725 HOSTEXESUF=$HOSTEXESUF
6726 HOSTLDFLAGS=$host_ldflags
6727 HOSTLIBS=$host_libs
6728 DEPHOSTCC=$host_cc
6729 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6730 HOSTCCDEP=$HOSTCCDEP
6731 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6732 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6733 HOSTCC_C=$HOSTCC_C
6734 HOSTCC_O=$HOSTCC_O
6735 HOSTLD_O=$HOSTLD_O
6736 TARGET_EXEC=$target_exec $target_exec_args
6737 TARGET_PATH=$target_path
6738 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6739 CFLAGS-ffplay=${sdl2_cflags}
6740 ZLIB=$($ldflags_filter -lz)
6741 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6742 EXTRALIBS=$extralibs
6743 COMPAT_OBJS=$compat_objs
6744 EXEOBJS=$exeobjs
6745 INSTALL=$install
6746 LIBTARGET=${LIBTARGET}
6747 SLIBNAME=${SLIBNAME}
6748 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6749 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6750 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6751 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6752 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6753 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6754 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6755 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6756 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6757 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6758 NOREDZONE_FLAGS=$noredzone_flags
6759 EOF
6760
6761 get_version(){
6762     lcname=lib${1}
6763     name=$(toupper $lcname)
6764     file=$source_path/$lcname/version.h
6765     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6766     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6767     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6768     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6769     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6770     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6771 }
6772
6773 map 'get_version $v' $LIBRARY_LIST
6774
6775 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6776
6777 print_program_libs(){
6778     eval "program_libs=\$${1}_libs"
6779     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6780 }
6781
6782 map 'print_program_libs $v' $PROGRAM_LIST
6783
6784 cat > $TMPH <<EOF
6785 /* Automatically generated by configure - do not modify! */
6786 #ifndef FFMPEG_CONFIG_H
6787 #define FFMPEG_CONFIG_H
6788 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6789 #define FFMPEG_LICENSE "$(c_escape $license)"
6790 #define CONFIG_THIS_YEAR 2017
6791 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6792 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6793 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6794 #define av_restrict $_restrict
6795 #define EXTERN_PREFIX "${extern_prefix}"
6796 #define EXTERN_ASM ${extern_prefix}
6797 #define BUILDSUF "$build_suffix"
6798 #define SLIBSUF "$SLIBSUF"
6799 #define HAVE_MMX2 HAVE_MMXEXT
6800 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6801 EOF
6802
6803 test -n "$assert_level" &&
6804     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6805
6806 test -n "$malloc_prefix" &&
6807     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6808
6809 if enabled yasm; then
6810     append config_files $TMPASM
6811     printf '' >$TMPASM
6812 fi
6813
6814 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6815
6816
6817 mkdir -p doc
6818 mkdir -p tests
6819 mkdir -p tests/api
6820 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6821
6822 print_config ARCH_   "$config_files" $ARCH_LIST
6823 print_config HAVE_   "$config_files" $HAVE_LIST
6824 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6825                                      $CONFIG_EXTRA      \
6826                                      $ALL_COMPONENTS    \
6827
6828 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6829 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6830
6831 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6832 cp_if_changed $TMPH config.h
6833 touch .config
6834
6835 enabled yasm && cp_if_changed $TMPASM config.asm
6836
6837 cat > $TMPH <<EOF
6838 /* Generated by ffconf */
6839 #ifndef AVUTIL_AVCONFIG_H
6840 #define AVUTIL_AVCONFIG_H
6841 EOF
6842
6843 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6844
6845 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6846
6847 cp_if_changed $TMPH libavutil/avconfig.h
6848
6849 if test -n "$WARNINGS"; then
6850     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6851     enabled fatal_warnings && exit 1
6852 fi
6853
6854 # generate the lists of enabled components
6855 print_enabled_components(){
6856     file=$1
6857     struct_name=$2
6858     name=$3
6859     shift 3
6860     echo "static const $struct_name *$name[] = {" > $TMPH
6861     for c in $*; do
6862         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6863     done
6864     echo "    NULL };" >> $TMPH
6865     cp_if_changed $TMPH $file
6866 }
6867
6868 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6869 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6870
6871 # build pkg-config files
6872
6873 lib_version(){
6874     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6875 }
6876
6877 pkgconfig_generate(){
6878     name=$1
6879     shortname=${name#lib}${build_suffix}
6880     comment=$2
6881     version=$3
6882     libs=$4
6883     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6884     requires=${requires%, }
6885     enabled ${name#lib} || return 0
6886     mkdir -p $name
6887     cat <<EOF > $name/$name${build_suffix}.pc
6888 prefix=$prefix
6889 exec_prefix=\${prefix}
6890 libdir=$libdir
6891 includedir=$incdir
6892
6893 Name: $name
6894 Description: $comment
6895 Version: $version
6896 Requires: $(enabled shared || echo $requires)
6897 Requires.private: $(enabled shared && echo $requires)
6898 Conflicts:
6899 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6900 Libs.private: $(enabled shared && echo $libs)
6901 Cflags: -I\${includedir}
6902 EOF
6903
6904 mkdir -p doc/examples/pc-uninstalled
6905 includedir=${source_path}
6906 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6907     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6908 prefix=
6909 exec_prefix=
6910 libdir=\${pcfiledir}/../../../$name
6911 includedir=${includedir}
6912
6913 Name: $name
6914 Description: $comment
6915 Version: $version
6916 Requires: $requires
6917 Conflicts:
6918 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6919 Cflags: -I\${includedir}
6920 EOF
6921 }
6922
6923 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6924 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6925 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6926 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6927 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6928 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6929 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6930 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6931 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"