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   --disable-xlib           disable xlib [autodetect]
 294   --disable-zlib           disable zlib [autodetect]
 295
 296   The following libraries provide various hardware acceleration features:
 297   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 298   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 299   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 300   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 301   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 302   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 303   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 304   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 305   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 306   --enable-omx             enable OpenMAX IL code [no]
 307   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 308   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 309   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 310   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 311   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 312
 313 Toolchain options:
 314   --arch=ARCH              select architecture [$arch]
 315   --cpu=CPU                select the minimum required CPU (affects
 316                            instruction selection, may crash on older CPUs)
 317   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 318   --progs-suffix=SUFFIX    program name suffix []
 319   --enable-cross-compile   assume a cross-compiler is used
 320   --sysroot=PATH           root of cross-build tree
 321   --sysinclude=PATH        location of cross-build system headers
 322   --target-os=OS           compiler targets OS [$target_os]
 323   --target-exec=CMD        command to run executables on target
 324   --target-path=DIR        path to view of build directory on target
 325   --target-samples=DIR     path to samples directory on target
 326   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 327   --toolchain=NAME         set tool defaults according to NAME
 328   --nm=NM                  use nm tool NM [$nm_default]
 329   --ar=AR                  use archive tool AR [$ar_default]
 330   --as=AS                  use assembler AS [$as_default]
 331   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 332   --strip=STRIP            use strip tool STRIP [$strip_default]
 333   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 334   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 335   --cc=CC                  use C compiler CC [$cc_default]
 336   --cxx=CXX                use C compiler CXX [$cxx_default]
 337   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 338   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 339   --ld=LD                  use linker LD [$ld_default]
 340   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 341   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 342   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 343   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 344   --host-cc=HOSTCC         use host C compiler HOSTCC
 345   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 346   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 347   --host-ld=HOSTLD         use host linker HOSTLD
 348   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 349   --host-libs=HLIBS        use libs HLIBS when linking for host
 350   --host-os=OS             compiler host OS [$target_os]
 351   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 352   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 353   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 354   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 355   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 356   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 357   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 358   --extra-version=STRING   version string suffix []
 359   --optflags=OPTFLAGS      override optimization-related compiler flags
 360   --build-suffix=SUFFIX    library name suffix []
 361   --enable-pic             build position-independent code
 362   --enable-thumb           compile for Thumb instruction set
 363   --enable-lto             use link-time optimization
 364   --env="ENV=override"     override the environment variables
 365
 366 Advanced options (experts only):
 367   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 368   --custom-allocator=NAME  use a supported custom allocator
 369   --disable-symver         disable symbol versioning
 370   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 371   --disable-safe-bitstream-reader
 372                            disable buffer boundary checking in bitreaders
 373                            (faster, but may crash)
 374   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 375   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 376
 377 Optimization options (experts only):
 378   --disable-asm            disable all assembly optimizations
 379   --disable-altivec        disable AltiVec optimizations
 380   --disable-vsx            disable VSX optimizations
 381   --disable-power8         disable POWER8 optimizations
 382   --disable-amd3dnow       disable 3DNow! optimizations
 383   --disable-amd3dnowext    disable 3DNow! extended optimizations
 384   --disable-mmx            disable MMX optimizations
 385   --disable-mmxext         disable MMXEXT optimizations
 386   --disable-sse            disable SSE optimizations
 387   --disable-sse2           disable SSE2 optimizations
 388   --disable-sse3           disable SSE3 optimizations
 389   --disable-ssse3          disable SSSE3 optimizations
 390   --disable-sse4           disable SSE4 optimizations
 391   --disable-sse42          disable SSE4.2 optimizations
 392   --disable-avx            disable AVX optimizations
 393   --disable-xop            disable XOP optimizations
 394   --disable-fma3           disable FMA3 optimizations
 395   --disable-fma4           disable FMA4 optimizations
 396   --disable-avx2           disable AVX2 optimizations
 397   --disable-aesni          disable AESNI optimizations
 398   --disable-armv5te        disable armv5te optimizations
 399   --disable-armv6          disable armv6 optimizations
 400   --disable-armv6t2        disable armv6t2 optimizations
 401   --disable-vfp            disable VFP optimizations
 402   --disable-neon           disable NEON optimizations
 403   --disable-inline-asm     disable use of inline assembly
 404   --disable-yasm           disable use of nasm/yasm assembly
 405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 407   --disable-msa            disable MSA optimizations
 408   --disable-mipsfpu        disable floating point MIPS optimizations
 409   --disable-mmi            disable Loongson SIMD optimizations
 410   --disable-fast-unaligned consider unaligned accesses slow
 411
 412 Developer options (useful when working on FFmpeg itself):
 413   --disable-debug          disable debugging symbols
 414   --enable-debug=LEVEL     set the debug level [$debuglevel]
 415   --disable-optimizations  disable compiler optimizations
 416   --enable-extra-warnings  enable more compiler warnings
 417   --disable-stripping      disable stripping of executables and shared libraries
 418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 419                            2 causes a slowdown at runtime.
 420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 422                            leaks and errors, using the specified valgrind binary.
 423                            Cannot be combined with --target-exec
 424   --enable-ftrapv          Trap arithmetic overflows
 425   --samples=PATH           location of test samples for FATE, if not set use
 426                            \$FATE_SAMPLES at make invocation time.
 427   --enable-neon-clobber-test check NEON registers for clobbering (should be
 428                            used only for debugging purposes)
 429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 430                            should be used only for debugging purposes)
 431   --enable-random          randomly enable/disable components
 432   --disable-random
 433   --enable-random=LIST     randomly enable/disable specific components or
 434   --disable-random=LIST    component groups. LIST is a comma-separated list
 435                            of NAME[:PROB] entries where NAME is a component
 436                            (group) and PROB the probability associated with
 437                            NAME (default 0.5).
 438   --random-seed=VALUE      seed value for --enable/disable-random
 439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 440                            (only applies to --disable-optimizations builds)
 441
 442 NOTE: Object files are built at the place where configure is launched.
 443 EOF
 444   exit 0
 445 }
 446
 447 quotes='""'
 448 if test -t 1 && which tput >/dev/null 2>&1; then
 449     ncolors=$(tput colors)
 450     if test -n "$ncolors" && test $ncolors -ge 8; then
 451         bold_color=$(tput bold)
 452         warn_color=$(tput setaf 3)
 453         error_color=$(tput setaf 1)
 454         reset_color=$(tput sgr0)
 455     fi
 456     # 72 used instead of 80 since that's the default of pr
 457     ncols=$(tput cols)
 458 fi
 459 : ${ncols:=72}
 460
 461 log(){
 462     echo "$@" >> $logfile
 463 }
 464
 465 log_file(){
 466     log BEGIN $1
 467     pr -n -t $1 >> $logfile
 468     log END $1
 469 }
 470
 471 warn(){
 472     log "WARNING: $*"
 473     WARNINGS="${WARNINGS}WARNING: $*\n"
 474 }
 475
 476 die(){
 477     log "$@"
 478     echo "$error_color$bold_color$@$reset_color"
 479     cat <<EOF
 480
 481 If you think configure made a mistake, make sure you are using the latest
 482 version from Git.  If the latest version fails, report the problem to the
 483 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 484 EOF
 485     if disabled logging; then
 486         cat <<EOF
 487 Rerun configure with logging enabled (do not use --disable-logging), and
 488 include the log this produces with your report.
 489 EOF
 490     else
 491         cat <<EOF
 492 Include the log file "$logfile" produced by configure as this will help
 493 solve the problem.
 494 EOF
 495     fi
 496     exit 1
 497 }
 498
 499 # Avoid locale weirdness, besides we really just want to translate ASCII.
 500 toupper(){
 501     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 502 }
 503
 504 tolower(){
 505     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 506 }
 507
 508 c_escape(){
 509     echo "$*" | sed 's/["\\]/\\\0/g'
 510 }
 511
 512 sh_quote(){
 513     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 514     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 515     echo "$v"
 516 }
 517
 518 cleanws(){
 519     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 520 }
 521
 522 filter(){
 523     pat=$1
 524     shift
 525     for v; do
 526         eval "case $v in $pat) echo $v ;; esac"
 527     done
 528 }
 529
 530 filter_out(){
 531     pat=$1
 532     shift
 533     for v; do
 534         eval "case $v in $pat) ;; *) echo $v ;; esac"
 535     done
 536 }
 537
 538 map(){
 539     m=$1
 540     shift
 541     for v; do eval $m; done
 542 }
 543
 544 add_suffix(){
 545     suffix=$1
 546     shift
 547     for v; do echo ${v}${suffix}; done
 548 }
 549
 550 set_all(){
 551     value=$1
 552     shift
 553     for var in $*; do
 554         eval $var=$value
 555     done
 556 }
 557
 558 set_weak(){
 559     value=$1
 560     shift
 561     for var; do
 562         eval : \${$var:=$value}
 563     done
 564 }
 565
 566 sanitize_var_name(){
 567     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 568 }
 569
 570 set_safe(){
 571     var=$1
 572     shift
 573     eval $(sanitize_var_name "$var")='$*'
 574 }
 575
 576 get_safe(){
 577     eval echo \$$(sanitize_var_name "$1")
 578 }
 579
 580 pushvar(){
 581     for pvar in $*; do
 582         eval level=\${${pvar}_level:=0}
 583         eval ${pvar}_${level}="\$$pvar"
 584         eval ${pvar}_level=$(($level+1))
 585     done
 586 }
 587
 588 popvar(){
 589     for pvar in $*; do
 590         eval level=\${${pvar}_level:-0}
 591         test $level = 0 && continue
 592         eval level=$(($level-1))
 593         eval $pvar="\${${pvar}_${level}}"
 594         eval ${pvar}_level=$level
 595         eval unset ${pvar}_${level}
 596     done
 597 }
 598
 599 request(){
 600     for var in $*; do
 601         eval ${var}_requested=yes
 602         eval $var=
 603     done
 604 }
 605
 606 enable(){
 607     set_all yes $*
 608 }
 609
 610 disable(){
 611     set_all no $*
 612 }
 613
 614 enable_weak(){
 615     set_weak yes $*
 616 }
 617
 618 disable_weak(){
 619     set_weak no $*
 620 }
 621
 622 enable_safe(){
 623     for var; do
 624         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 625     done
 626 }
 627
 628 disable_safe(){
 629     for var; do
 630         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 631     done
 632 }
 633
 634 do_enable_deep(){
 635     for var; do
 636         enabled $var && continue
 637         eval sel="\$${var}_select"
 638         eval sgs="\$${var}_suggest"
 639         pushvar var sgs
 640         enable_deep $sel
 641         popvar sgs
 642         enable_deep_weak $sgs
 643         popvar var
 644     done
 645 }
 646
 647 enable_deep(){
 648     do_enable_deep $*
 649     enable $*
 650 }
 651
 652 enable_deep_weak(){
 653     for var; do
 654         disabled $var && continue
 655         pushvar var
 656         do_enable_deep $var
 657         popvar var
 658         enable_weak $var
 659     done
 660 }
 661
 662 requested(){
 663     test "${1#!}" = "$1" && op='=' || op=!=
 664     eval test "x\$${1#!}_requested" $op "xyes"
 665 }
 666
 667 enabled(){
 668     test "${1#!}" = "$1" && op='=' || op=!=
 669     eval test "x\$${1#!}" $op "xyes"
 670 }
 671
 672 disabled(){
 673     test "${1#!}" = "$1" && op='=' || op=!=
 674     eval test "x\$${1#!}" $op "xno"
 675 }
 676
 677 enabled_all(){
 678     for opt; do
 679         enabled $opt || return 1
 680     done
 681 }
 682
 683 disabled_all(){
 684     for opt; do
 685         disabled $opt || return 1
 686     done
 687 }
 688
 689 enabled_any(){
 690     for opt; do
 691         enabled $opt && return 0
 692     done
 693 }
 694
 695 disabled_any(){
 696     for opt; do
 697         disabled $opt && return 0
 698     done
 699     return 1
 700 }
 701
 702 set_default(){
 703     for opt; do
 704         eval : \${$opt:=\$${opt}_default}
 705     done
 706 }
 707
 708 is_in(){
 709     value=$1
 710     shift
 711     for var in $*; do
 712         [ $var = $value ] && return 0
 713     done
 714     return 1
 715 }
 716
 717 do_check_deps(){
 718     for cfg; do
 719         cfg="${cfg#!}"
 720         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 721         disabled ${cfg}_checking && continue
 722         enable ${cfg}_checking
 723         append allopts $cfg
 724
 725         eval dep_all="\$${cfg}_deps"
 726         eval dep_any="\$${cfg}_deps_any"
 727         eval dep_sel="\$${cfg}_select"
 728         eval dep_sgs="\$${cfg}_suggest"
 729         eval dep_ifa="\$${cfg}_if"
 730         eval dep_ifn="\$${cfg}_if_any"
 731
 732         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 733         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 734         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 735
 736         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 737         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 738         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 739         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 740         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 741
 742         if enabled $cfg; then
 743             enable_deep $dep_sel
 744             enable_deep_weak $dep_sgs
 745         fi
 746
 747         disable ${cfg}_checking
 748     done
 749 }
 750
 751 check_deps(){
 752     unset allopts
 753
 754     do_check_deps "$@"
 755
 756     for cfg in $allopts; do
 757         enabled $cfg || continue
 758         eval dep_extralibs="\$${cfg}_extralibs"
 759         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 760     done
 761 }
 762
 763 print_config(){
 764     pfx=$1
 765     files=$2
 766     shift 2
 767     map 'eval echo "$v \${$v:-no}"' "$@" |
 768     awk "BEGIN { split(\"$files\", files) }
 769         {
 770             c = \"$pfx\" toupper(\$1);
 771             v = \$2;
 772             sub(/yes/, 1, v);
 773             sub(/no/,  0, v);
 774             for (f in files) {
 775                 file = files[f];
 776                 if (file ~ /\\.h\$/) {
 777                     printf(\"#define %s %d\\n\", c, v) >>file;
 778                 } else if (file ~ /\\.asm\$/) {
 779                     printf(\"%%define %s %d\\n\", c, v) >>file;
 780                 } else if (file ~ /\\.mak\$/) {
 781                     n = -v ? \"\" : \"!\";
 782                     printf(\"%s%s=yes\\n\", n, c) >>file;
 783                 } else if (file ~ /\\.texi\$/) {
 784                     pre = -v ? \"\" : \"@c \";
 785                     yesno = \$2;
 786                     c2 = tolower(c);
 787                     gsub(/_/, \"-\", c2);
 788                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 789                 }
 790             }
 791         }"
 792 }
 793
 794 print_enabled(){
 795     suf=$1
 796     shift
 797     for v; do
 798         enabled $v && printf "%s\n" ${v%$suf}
 799     done
 800 }
 801
 802 append(){
 803     var=$1
 804     shift
 805     eval "$var=\"\$$var $*\""
 806 }
 807
 808 prepend(){
 809     var=$1
 810     shift
 811     eval "$var=\"$* \$$var\""
 812 }
 813
 814 unique(){
 815     var=$1
 816     uniq_list=""
 817     for tok in $(eval echo \$$var); do
 818         uniq_list="$(filter_out $tok $uniq_list) $tok"
 819     done
 820     eval "$var=\"${uniq_list}\""
 821 }
 822
 823 add_cppflags(){
 824     append CPPFLAGS "$@"
 825 }
 826
 827 add_cflags(){
 828     append CFLAGS $($cflags_filter "$@")
 829 }
 830
 831 add_cxxflags(){
 832     append CXXFLAGS $($cflags_filter "$@")
 833 }
 834
 835 add_asflags(){
 836     append ASFLAGS $($asflags_filter "$@")
 837 }
 838
 839 add_objcflags(){
 840     append OBJCFLAGS $($objcflags_filter "$@")
 841 }
 842
 843 add_ldflags(){
 844     append LDFLAGS $($ldflags_filter "$@")
 845 }
 846
 847 add_ldexeflags(){
 848     append LDEXEFLAGS $($ldflags_filter "$@")
 849 }
 850
 851 add_ldlibflags(){
 852     append LDLIBFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_stripflags(){
 856     append ASMSTRIPFLAGS "$@"
 857 }
 858
 859 add_extralibs(){
 860     prepend extralibs $($ldflags_filter "$@")
 861 }
 862
 863 add_host_cppflags(){
 864     append host_cppflags "$@"
 865 }
 866
 867 add_host_cflags(){
 868     append host_cflags $($host_cflags_filter "$@")
 869 }
 870
 871 add_host_ldflags(){
 872     append host_ldflags $($host_ldflags_filter "$@")
 873 }
 874
 875 add_compat(){
 876     append compat_objs $1
 877     shift
 878     map 'add_cppflags -D$v' "$@"
 879 }
 880
 881 check_cmd(){
 882     log "$@"
 883     "$@" >> $logfile 2>&1
 884 }
 885
 886 check_stat(){
 887     log check_stat "$@"
 888     stat "$1" >> $logfile 2>&1
 889 }
 890
 891 cc_o(){
 892     eval printf '%s\\n' $CC_O
 893 }
 894
 895 cc_e(){
 896     eval printf '%s\\n' $CC_E
 897 }
 898
 899 check_cc(){
 900     log check_cc "$@"
 901     cat > $TMPC
 902     log_file $TMPC
 903     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 904 }
 905
 906 check_cxx(){
 907     log check_cxx "$@"
 908     cat > $TMPCPP
 909     log_file $TMPCPP
 910     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 911 }
 912
 913 check_objcc(){
 914     log check_objcc "$@"
 915     cat > $TMPM
 916     log_file $TMPM
 917     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 918 }
 919
 920 check_cpp(){
 921     log check_cpp "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 925 }
 926
 927 as_o(){
 928     eval printf '%s\\n' $AS_O
 929 }
 930
 931 check_as(){
 932     log check_as "$@"
 933     cat > $TMPS
 934     log_file $TMPS
 935     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 936 }
 937
 938 check_inline_asm(){
 939     log check_inline_asm "$@"
 940     name="$1"
 941     code="$2"
 942     shift 2
 943     disable $name
 944     check_cc "$@" <<EOF && enable $name
 945 void foo(void){ __asm__ volatile($code); }
 946 EOF
 947 }
 948
 949 check_inline_asm_flags(){
 950     log check_inline_asm_flags "$@"
 951     name="$1"
 952     code="$2"
 953     flags=''
 954     shift 2
 955     while [ "$1" != "" ]; do
 956       append flags $1
 957       shift
 958     done;
 959     disable $name
 960     cat > $TMPC <<EOF
 961 void foo(void){ __asm__ volatile($code); }
 962 EOF
 963     log_file $TMPC
 964     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 965     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 966 }
 967
 968 check_insn(){
 969     log check_insn "$@"
 970     check_inline_asm ${1}_inline "\"$2\""
 971     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 972 }
 973
 974 check_yasm(){
 975     log check_yasm "$@"
 976     echo "$1" > $TMPS
 977     log_file $TMPS
 978     shift 1
 979     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 980 }
 981
 982 ld_o(){
 983     eval printf '%s\\n' $LD_O
 984 }
 985
 986 check_ld(){
 987     log check_ld "$@"
 988     type=$1
 989     shift 1
 990     flags=$(filter_out '-l*|*.so' $@)
 991     libs=$(filter '-l*|*.so' $@)
 992     check_$type $($cflags_filter $flags) || return
 993     flags=$($ldflags_filter $flags)
 994     libs=$($ldflags_filter $libs)
 995     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 996 }
 997
 998 print_include(){
 999     hdr=$1
1000     test "${hdr%.h}" = "${hdr}" &&
1001         echo "#include $hdr"    ||
1002         echo "#include <$hdr>"
1003 }
1004
1005 check_code(){
1006     log check_code "$@"
1007     check=$1
1008     headers=$2
1009     code=$3
1010     shift 3
1011     {
1012         for hdr in $headers; do
1013             print_include $hdr
1014         done
1015         echo "int main(void) { $code; return 0; }"
1016     } | check_$check "$@"
1017 }
1018
1019 check_cppflags(){
1020     log check_cppflags "$@"
1021     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1022 int x;
1023 EOF
1024 }
1025
1026 test_cflags(){
1027     log test_cflags "$@"
1028     set -- $($cflags_filter "$@")
1029     check_cc "$@" <<EOF
1030 int x;
1031 EOF
1032 }
1033
1034 check_cflags(){
1035     log check_cflags "$@"
1036     test_cflags "$@" && add_cflags "$@"
1037 }
1038
1039 check_cxxflags(){
1040     log check_cxxflags "$@"
1041     set -- $($cflags_filter "$@")
1042     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1043 int x;
1044 EOF
1045 }
1046
1047 test_objcflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_objcc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_objcflags(){
1056     log check_cflags "$@"
1057     test_objcflags "$@" && add_objcflags "$@"
1058 }
1059
1060 test_ldflags(){
1061     log test_ldflags "$@"
1062     check_ld "cc" "$@" <<EOF
1063 int main(void){ return 0; }
1064 EOF
1065 }
1066
1067 check_ldflags(){
1068     log check_ldflags "$@"
1069     test_ldflags "$@" && add_ldflags "$@"
1070 }
1071
1072 test_stripflags(){
1073     log test_stripflags "$@"
1074     # call check_cc to get a fresh TMPO
1075     check_cc <<EOF
1076 int main(void) { return 0; }
1077 EOF
1078     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1079 }
1080
1081 check_stripflags(){
1082     log check_stripflags "$@"
1083     test_stripflags "$@" && add_stripflags "$@"
1084 }
1085
1086 check_header(){
1087     log check_header "$@"
1088     header=$1
1089     shift
1090     disable_safe $header
1091     check_cpp "$@" <<EOF && enable_safe $header
1092 #include <$header>
1093 int x;
1094 EOF
1095 }
1096
1097 check_header_objcc(){
1098     log check_header_objcc "$@"
1099     rm -f -- "$TMPO"
1100     header=$1
1101     shift
1102     disable_safe $header
1103     {
1104        echo "#include <$header>"
1105        echo "int main(void) { return 0; }"
1106     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1107 }
1108
1109 check_func(){
1110     log check_func "$@"
1111     func=$1
1112     shift
1113     disable $func
1114     check_ld "cc" "$@" <<EOF && enable $func
1115 extern int $func();
1116 int main(void){ $func(); }
1117 EOF
1118 }
1119
1120 check_complexfunc(){
1121     log check_complexfunc "$@"
1122     func=$1
1123     narg=$2
1124     shift 2
1125     test $narg = 2 && args="f, g" || args="f * I"
1126     disable $func
1127     check_ld "cc" "$@" <<EOF && enable $func
1128 #include <complex.h>
1129 #include <math.h>
1130 float foo(complex float f, complex float g) { return $func($args); }
1131 int main(void){ return (int) foo; }
1132 EOF
1133 }
1134
1135 check_mathfunc(){
1136     log check_mathfunc "$@"
1137     func=$1
1138     narg=$2
1139     shift 2
1140     test $narg = 2 && args="f, g" || args="f"
1141     disable $func
1142     check_ld "cc" "$@" <<EOF && enable $func
1143 #include <math.h>
1144 float foo(float f, float g) { return $func($args); }
1145 int main(void){ return (int) foo; }
1146 EOF
1147 }
1148
1149 check_func_headers(){
1150     log check_func_headers "$@"
1151     headers=$1
1152     funcs=$2
1153     shift 2
1154     {
1155         for hdr in $headers; do
1156             print_include $hdr
1157         done
1158         echo "#include <stdint.h>"
1159         for func in $funcs; do
1160             echo "long check_$func(void) { return (long) $func; }"
1161         done
1162         echo "int main(void) { int ret = 0;"
1163         # LTO could optimize out the test functions without this
1164         for func in $funcs; do
1165             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1166         done
1167         echo "return ret; }"
1168     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1169 }
1170
1171 check_class_headers_cpp(){
1172     log check_class_headers_cpp "$@"
1173     headers=$1
1174     classes=$2
1175     shift 2
1176     {
1177         for hdr in $headers; do
1178             echo "#include <$hdr>"
1179         done
1180         echo "int main(void) { "
1181         i=1
1182         for class in $classes; do
1183             echo "$class obj$i;"
1184             i=$(expr $i + 1)
1185         done
1186         echo "return 0; }"
1187     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1188 }
1189
1190 check_cpp_condition(){
1191     log check_cpp_condition "$@"
1192     header=$1
1193     condition=$2
1194     shift 2
1195     check_cpp "$@" <<EOF
1196 #include <$header>
1197 #if !($condition)
1198 #error "unsatisfied condition: $condition"
1199 #endif
1200 EOF
1201 }
1202
1203 test_cflags_cc(){
1204     log test_cflags_cc "$@"
1205     flags=$1
1206     header=$2
1207     condition=$3
1208     shift 3
1209     set -- $($cflags_filter "$flags")
1210     check_cc "$@" <<EOF
1211 #include <$header>
1212 #if !($condition)
1213 #error "unsatisfied condition: $condition"
1214 #endif
1215 EOF
1216 }
1217
1218 check_lib(){
1219     log check_lib "$@"
1220     header="$1"
1221     func="$2"
1222     shift 2
1223     check_header $header && check_func $func "$@" && add_extralibs "$@"
1224 }
1225
1226 check_lib2(){
1227     log check_lib2 "$@"
1228     headers="$1"
1229     funcs="$2"
1230     shift 2
1231     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1232 }
1233
1234 check_lib_cpp(){
1235     log check_lib_cpp "$@"
1236     headers="$1"
1237     classes="$2"
1238     shift 2
1239     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1240 }
1241
1242 check_pkg_config(){
1243     log check_pkg_config "$@"
1244     pkgandversion="$1"
1245     pkg="${1%% *}"
1246     headers="$2"
1247     funcs="$3"
1248     shift 3
1249     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1250     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1251     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1252     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1253         set_safe "${pkg}_cflags" $pkg_cflags   &&
1254         set_safe "${pkg}_libs"   $pkg_libs
1255 }
1256
1257 check_exec(){
1258     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1259 }
1260
1261 check_exec_crash(){
1262     code=$(cat)
1263
1264     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1265     # are safe but may not be available everywhere.  Thus we use
1266     # raise(SIGTERM) instead.  The check is run in a subshell so we
1267     # can redirect the "Terminated" message from the shell.  SIGBUS
1268     # is not defined by standard C so it is used conditionally.
1269
1270     (check_exec "$@") >> $logfile 2>&1 <<EOF
1271 #include <signal.h>
1272 static void sighandler(int sig){
1273     raise(SIGTERM);
1274 }
1275 int foo(void){
1276     $code
1277 }
1278 int (*func_ptr)(void) = foo;
1279 int main(void){
1280     signal(SIGILL, sighandler);
1281     signal(SIGFPE, sighandler);
1282     signal(SIGSEGV, sighandler);
1283 #ifdef SIGBUS
1284     signal(SIGBUS, sighandler);
1285 #endif
1286     return func_ptr();
1287 }
1288 EOF
1289 }
1290
1291 check_type(){
1292     log check_type "$@"
1293     headers=$1
1294     type=$2
1295     shift 2
1296     disable_safe "$type"
1297     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1298 }
1299
1300 check_struct(){
1301     log check_struct "$@"
1302     headers=$1
1303     struct=$2
1304     member=$3
1305     shift 3
1306     disable_safe "${struct}_${member}"
1307     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1308         enable_safe "${struct}_${member}"
1309 }
1310
1311 check_builtin(){
1312     log check_builtin "$@"
1313     name=$1
1314     headers=$2
1315     builtin=$3
1316     shift 3
1317     disable "$name"
1318     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1319 }
1320
1321 check_compile_assert(){
1322     log check_compile_assert "$@"
1323     name=$1
1324     headers=$2
1325     condition=$3
1326     shift 3
1327     disable "$name"
1328     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1329 }
1330
1331 require(){
1332     name="$1"
1333     header="$2"
1334     func="$3"
1335     shift 3
1336     check_lib $header $func "$@" || die "ERROR: $name not found"
1337 }
1338
1339 require2(){
1340     name="$1"
1341     headers="$2"
1342     func="$3"
1343     shift 3
1344     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1345 }
1346
1347 require_cpp(){
1348     name="$1"
1349     headers="$2"
1350     classes="$3"
1351     shift 3
1352     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1353 }
1354
1355 use_pkg_config(){
1356     pkg="$1"
1357     check_pkg_config "$@" || return 1
1358     add_cflags    $(get_safe "${pkg}_cflags")
1359     add_extralibs $(get_safe "${pkg}_libs")
1360 }
1361
1362 require_pkg_config(){
1363     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1364 }
1365
1366 require_libfreetype(){
1367     log require_libfreetype "$@"
1368     pkg="freetype2"
1369     check_cmd $pkg_config --exists --print-errors $pkg \
1370       || die "ERROR: $pkg not found"
1371     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1372     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1373     {
1374         echo "#include <ft2build.h>"
1375         echo "#include FT_FREETYPE_H"
1376         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1377         echo "int main(void) { return 0; }"
1378     } | check_ld "cc" $pkg_cflags $pkg_libs \
1379       && set_safe "${pkg}_cflags" $pkg_cflags \
1380       && set_safe "${pkg}_libs"   $pkg_libs \
1381       || die "ERROR: $pkg not found"
1382     add_cflags    $(get_safe "${pkg}_cflags")
1383     add_extralibs $(get_safe "${pkg}_libs")
1384 }
1385
1386 hostcc_e(){
1387     eval printf '%s\\n' $HOSTCC_E
1388 }
1389
1390 hostcc_o(){
1391     eval printf '%s\\n' $HOSTCC_O
1392 }
1393
1394 check_host_cc(){
1395     log check_host_cc "$@"
1396     cat > $TMPC
1397     log_file $TMPC
1398     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1399 }
1400
1401 check_host_cpp(){
1402     log check_host_cpp "$@"
1403     cat > $TMPC
1404     log_file $TMPC
1405     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1406 }
1407
1408 check_host_cppflags(){
1409     log check_host_cppflags "$@"
1410     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1411 int x;
1412 EOF
1413 }
1414
1415 check_host_cflags(){
1416     log check_host_cflags "$@"
1417     set -- $($host_cflags_filter "$@")
1418     check_host_cc "$@" <<EOF && append host_cflags "$@"
1419 int x;
1420 EOF
1421 }
1422
1423 check_host_cpp_condition(){
1424     log check_host_cpp_condition "$@"
1425     header=$1
1426     condition=$2
1427     shift 2
1428     check_host_cpp "$@" <<EOF
1429 #include <$header>
1430 #if !($condition)
1431 #error "unsatisfied condition: $condition"
1432 #endif
1433 EOF
1434 }
1435
1436 cp_if_changed(){
1437     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1438     mkdir -p "$(dirname $2)"
1439     $cp_f "$1" "$2"
1440 }
1441
1442 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1443 # system-dependent things.
1444
1445 AVCODEC_COMPONENTS="
1446     bsfs
1447     decoders
1448     encoders
1449     hwaccels
1450     parsers
1451 "
1452
1453 AVDEVICE_COMPONENTS="
1454     indevs
1455     outdevs
1456 "
1457 AVFILTER_COMPONENTS="
1458     filters
1459 "
1460 AVFORMAT_COMPONENTS="
1461     demuxers
1462     muxers
1463     protocols
1464 "
1465
1466 AVRESAMPLE_COMPONENTS=""
1467 AVUTIL_COMPONENTS=""
1468
1469 COMPONENT_LIST="
1470     $AVCODEC_COMPONENTS
1471     $AVDEVICE_COMPONENTS
1472     $AVFILTER_COMPONENTS
1473     $AVFORMAT_COMPONENTS
1474     $AVRESAMPLE_COMPONENTS
1475     $AVUTIL_COMPONENTS
1476 "
1477
1478 EXAMPLE_LIST="
1479     avio_dir_cmd_example
1480     avio_reading_example
1481     decoding_encoding_example
1482     demuxing_decoding_example
1483     extract_mvs_example
1484     filter_audio_example
1485     filtering_audio_example
1486     filtering_video_example
1487     http_multiclient_example
1488     metadata_example
1489     muxing_example
1490     qsvdec_example
1491     remuxing_example
1492     resampling_audio_example
1493     scaling_video_example
1494     transcode_aac_example
1495     transcoding_example
1496 "
1497 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1498     bzlib
1499     iconv
1500     libxcb
1501     libxcb_shm
1502     libxcb_shape
1503     libxcb_xfixes
1504     lzma
1505     schannel
1506     sdl
1507     sdl2
1508     securetransport
1509     xlib
1510     zlib
1511 "
1512
1513 EXTERNAL_LIBRARY_GPL_LIST="
1514     frei0r
1515     libcdio
1516     librubberband
1517     libvidstab
1518     libx264
1519     libx265
1520     libxavs
1521     libxvid
1522 "
1523
1524 EXTERNAL_LIBRARY_NONFREE_LIST="
1525     libfdk_aac
1526     openssl
1527 "
1528
1529 EXTERNAL_LIBRARY_VERSION3_LIST="
1530     gmp
1531     libopencore_amrnb
1532     libopencore_amrwb
1533     libvo_amrwbenc
1534 "
1535
1536 EXTERNAL_LIBRARY_GPLV3_LIST="
1537     libsmbclient
1538 "
1539
1540 EXTERNAL_LIBRARY_LIST="
1541     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1542     $EXTERNAL_LIBRARY_GPL_LIST
1543     $EXTERNAL_LIBRARY_NONFREE_LIST
1544     $EXTERNAL_LIBRARY_VERSION3_LIST
1545     $EXTERNAL_LIBRARY_GPLV3_LIST
1546     avisynth
1547     chromaprint
1548     crystalhd
1549     decklink
1550     gcrypt
1551     gnutls
1552     jni
1553     ladspa
1554     libass
1555     libbluray
1556     libbs2b
1557     libcaca
1558     libcelt
1559     libdc1394
1560     libflite
1561     libfontconfig
1562     libfreetype
1563     libfribidi
1564     libgme
1565     libgsm
1566     libiec61883
1567     libilbc
1568     libkvazaar
1569     libmodplug
1570     libmp3lame
1571     libnut
1572     libopencv
1573     libopenh264
1574     libopenjpeg
1575     libopenmpt
1576     libopus
1577     libpulse
1578     librtmp
1579     libschroedinger
1580     libshine
1581     libsmbclient
1582     libsnappy
1583     libsoxr
1584     libspeex
1585     libssh
1586     libtesseract
1587     libtheora
1588     libtwolame
1589     libv4l2
1590     libvorbis
1591     libvpx
1592     libwavpack
1593     libwebp
1594     libzimg
1595     libzmq
1596     libzvbi
1597     mediacodec
1598     netcdf
1599     openal
1600     opencl
1601     opengl
1602     videotoolbox
1603 "
1604 HWACCEL_AUTODETECT_LIBRARY_LIST="
1605     audiotoolbox
1606     cuda
1607     cuvid
1608     d3d11va
1609     dxva2
1610     nvenc
1611     vaapi
1612     vda
1613     vdpau
1614     videotoolbox_hwaccel
1615     xvmc
1616 "
1617
1618 HWACCEL_LIBRARY_NONFREE_LIST="
1619     libnpp
1620 "
1621
1622 HWACCEL_LIBRARY_LIST="
1623     $HWACCEL_AUTODETECT_LIBRARY_LIST
1624     $HWACCEL_LIBRARY_NONFREE_LIST
1625     libmfx
1626     mmal
1627     omx
1628 "
1629
1630 DOCUMENT_LIST="
1631     doc
1632     htmlpages
1633     manpages
1634     podpages
1635     txtpages
1636 "
1637
1638 FEATURE_LIST="
1639     ftrapv
1640     gray
1641     hardcoded_tables
1642     omx_rpi
1643     runtime_cpudetect
1644     safe_bitstream_reader
1645     shared
1646     small
1647     static
1648     swscale_alpha
1649 "
1650
1651 LIBRARY_LIST="
1652     avcodec
1653     avdevice
1654     avfilter
1655     avformat
1656     avresample
1657     avutil
1658     postproc
1659     swresample
1660     swscale
1661 "
1662
1663 LICENSE_LIST="
1664     gpl
1665     nonfree
1666     version3
1667 "
1668
1669 PROGRAM_LIST="
1670     ffplay
1671     ffprobe
1672     ffserver
1673     ffmpeg
1674 "
1675
1676 SUBSYSTEM_LIST="
1677     dct
1678     dwt
1679     error_resilience
1680     faan
1681     fast_unaligned
1682     fft
1683     lsp
1684     lzo
1685     mdct
1686     pixelutils
1687     network
1688     rdft
1689 "
1690
1691 CONFIG_LIST="
1692     $COMPONENT_LIST
1693     $DOCUMENT_LIST
1694     $EXAMPLE_LIST
1695     $EXTERNAL_LIBRARY_LIST
1696     $HWACCEL_LIBRARY_LIST
1697     $FEATURE_LIST
1698     $LICENSE_LIST
1699     $LIBRARY_LIST
1700     $PROGRAM_LIST
1701     $SUBSYSTEM_LIST
1702     fontconfig
1703     memalign_hack
1704     memory_poisoning
1705     neon_clobber_test
1706     pic
1707     pod2man
1708     raise_major
1709     thumb
1710     valgrind_backtrace
1711     xmm_clobber_test
1712 "
1713
1714 THREADS_LIST="
1715     pthreads
1716     os2threads
1717     w32threads
1718 "
1719
1720 ATOMICS_LIST="
1721     atomics_gcc
1722     atomics_suncc
1723     atomics_win32
1724 "
1725
1726 AUTODETECT_LIBS="
1727     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1728     $HWACCEL_AUTODETECT_LIBRARY_LIST
1729     $THREADS_LIST
1730 "
1731
1732 ARCH_LIST="
1733     aarch64
1734     alpha
1735     arm
1736     avr32
1737     avr32_ap
1738     avr32_uc
1739     bfin
1740     ia64
1741     m68k
1742     mips
1743     mips64
1744     parisc
1745     ppc
1746     ppc64
1747     s390
1748     sh4
1749     sparc
1750     sparc64
1751     tilegx
1752     tilepro
1753     tomi
1754     x86
1755     x86_32
1756     x86_64
1757 "
1758
1759 ARCH_EXT_LIST_ARM="
1760     armv5te
1761     armv6
1762     armv6t2
1763     armv8
1764     neon
1765     vfp
1766     vfpv3
1767     setend
1768 "
1769
1770 ARCH_EXT_LIST_MIPS="
1771     mipsfpu
1772     mips32r2
1773     mips32r5
1774     mips64r2
1775     mips32r6
1776     mips64r6
1777     mipsdsp
1778     mipsdspr2
1779     msa
1780 "
1781
1782 ARCH_EXT_LIST_LOONGSON="
1783     loongson2
1784     loongson3
1785     mmi
1786 "
1787
1788 ARCH_EXT_LIST_X86_SIMD="
1789     aesni
1790     amd3dnow
1791     amd3dnowext
1792     avx
1793     avx2
1794     fma3
1795     fma4
1796     mmx
1797     mmxext
1798     sse
1799     sse2
1800     sse3
1801     sse4
1802     sse42
1803     ssse3
1804     xop
1805 "
1806
1807 ARCH_EXT_LIST_PPC="
1808     altivec
1809     dcbzl
1810     ldbrx
1811     power8
1812     ppc4xx
1813     vsx
1814 "
1815
1816 ARCH_EXT_LIST_X86="
1817     $ARCH_EXT_LIST_X86_SIMD
1818     cpunop
1819     i686
1820 "
1821
1822 ARCH_EXT_LIST="
1823     $ARCH_EXT_LIST_ARM
1824     $ARCH_EXT_LIST_PPC
1825     $ARCH_EXT_LIST_X86
1826     $ARCH_EXT_LIST_MIPS
1827     $ARCH_EXT_LIST_LOONGSON
1828 "
1829
1830 ARCH_FEATURES="
1831     aligned_stack
1832     fast_64bit
1833     fast_clz
1834     fast_cmov
1835     local_aligned_8
1836     local_aligned_16
1837     local_aligned_32
1838     simd_align
1839     simd_align_16
1840     simd_align_32
1841 "
1842
1843 BUILTIN_LIST="
1844     atomic_cas_ptr
1845     machine_rw_barrier
1846     MemoryBarrier
1847     mm_empty
1848     rdtsc
1849     sarestart
1850     sem_timedwait
1851     sync_val_compare_and_swap
1852 "
1853 HAVE_LIST_CMDLINE="
1854     inline_asm
1855     symver
1856     yasm
1857 "
1858
1859 HAVE_LIST_PUB="
1860     bigendian
1861     fast_unaligned
1862 "
1863
1864 HEADERS_LIST="
1865     alsa_asoundlib_h
1866     altivec_h
1867     arpa_inet_h
1868     asm_types_h
1869     cdio_paranoia_h
1870     cdio_paranoia_paranoia_h
1871     cuda_h
1872     dispatch_dispatch_h
1873     dev_bktr_ioctl_bt848_h
1874     dev_bktr_ioctl_meteor_h
1875     dev_ic_bt8xx_h
1876     dev_video_bktr_ioctl_bt848_h
1877     dev_video_meteor_ioctl_meteor_h
1878     direct_h
1879     dirent_h
1880     dlfcn_h
1881     d3d11_h
1882     dxva_h
1883     ES2_gl_h
1884     gsm_h
1885     io_h
1886     mach_mach_time_h
1887     machine_ioctl_bt848_h
1888     machine_ioctl_meteor_h
1889     malloc_h
1890     opencv2_core_core_c_h
1891     openjpeg_2_1_openjpeg_h
1892     openjpeg_2_0_openjpeg_h
1893     openjpeg_1_5_openjpeg_h
1894     OpenGL_gl3_h
1895     poll_h
1896     sndio_h
1897     soundcard_h
1898     stdatomic_h
1899     sys_mman_h
1900     sys_param_h
1901     sys_resource_h
1902     sys_select_h
1903     sys_soundcard_h
1904     sys_time_h
1905     sys_un_h
1906     sys_videoio_h
1907     termios_h
1908     udplite_h
1909     unistd_h
1910     valgrind_valgrind_h
1911     windows_h
1912     winsock2_h
1913 "
1914
1915 INTRINSICS_LIST="
1916     intrinsics_neon
1917 "
1918
1919 COMPLEX_FUNCS="
1920     cabs
1921     cexp
1922 "
1923
1924 MATH_FUNCS="
1925     atanf
1926     atan2f
1927     cbrt
1928     cbrtf
1929     copysign
1930     cosf
1931     erf
1932     exp2
1933     exp2f
1934     expf
1935     hypot
1936     isfinite
1937     isinf
1938     isnan
1939     ldexpf
1940     llrint
1941     llrintf
1942     log2
1943     log2f
1944     log10f
1945     lrint
1946     lrintf
1947     powf
1948     rint
1949     round
1950     roundf
1951     sinf
1952     trunc
1953     truncf
1954 "
1955
1956 SYSTEM_FUNCS="
1957     access
1958     aligned_malloc
1959     arc4random
1960     clock_gettime
1961     closesocket
1962     CommandLineToArgvW
1963     CoTaskMemFree
1964     CryptGenRandom
1965     dlopen
1966     fcntl
1967     flt_lim
1968     fork
1969     getaddrinfo
1970     gethrtime
1971     getopt
1972     GetProcessAffinityMask
1973     GetProcessMemoryInfo
1974     GetProcessTimes
1975     getrusage
1976     GetSystemTimeAsFileTime
1977     gettimeofday
1978     glob
1979     glXGetProcAddress
1980     gmtime_r
1981     inet_aton
1982     isatty
1983     jack_port_get_latency_range
1984     kbhit
1985     LoadLibrary
1986     localtime_r
1987     lstat
1988     lzo1x_999_compress
1989     mach_absolute_time
1990     MapViewOfFile
1991     memalign
1992     mkstemp
1993     mmap
1994     mprotect
1995     nanosleep
1996     PeekNamedPipe
1997     posix_memalign
1998     pthread_cancel
1999     sched_getaffinity
2000     SetConsoleTextAttribute
2001     SetConsoleCtrlHandler
2002     setmode
2003     setrlimit
2004     Sleep
2005     strerror_r
2006     sysconf
2007     sysctl
2008     usleep
2009     UTGetOSTypeFromString
2010     VirtualAlloc
2011     wglGetProcAddress
2012 "
2013
2014 TOOLCHAIN_FEATURES="
2015     as_dn_directive
2016     as_fpu_directive
2017     as_func
2018     as_object_arch
2019     asm_mod_q
2020     attribute_may_alias
2021     attribute_packed
2022     ebp_available
2023     ebx_available
2024     gnu_as
2025     gnu_windres
2026     ibm_asm
2027     inline_asm_direct_symbol_refs
2028     inline_asm_labels
2029     inline_asm_nonlocal_labels
2030     pragma_deprecated
2031     rsync_contimeout
2032     symver_asm_label
2033     symver_gnu_asm
2034     vfp_args
2035     xform_asm
2036     xmm_clobbers
2037 "
2038
2039 TYPES_LIST="
2040     CONDITION_VARIABLE_Ptr
2041     socklen_t
2042     struct_addrinfo
2043     struct_group_source_req
2044     struct_ip_mreq_source
2045     struct_ipv6_mreq
2046     struct_msghdr_msg_flags
2047     struct_pollfd
2048     struct_rusage_ru_maxrss
2049     struct_sctp_event_subscribe
2050     struct_sockaddr_in6
2051     struct_sockaddr_sa_len
2052     struct_sockaddr_storage
2053     struct_stat_st_mtim_tv_nsec
2054     struct_v4l2_frmivalenum_discrete
2055 "
2056
2057 HAVE_LIST="
2058     $ARCH_EXT_LIST
2059     $(add_suffix _external $ARCH_EXT_LIST)
2060     $(add_suffix _inline   $ARCH_EXT_LIST)
2061     $ARCH_FEATURES
2062     $ATOMICS_LIST
2063     $BUILTIN_LIST
2064     $COMPLEX_FUNCS
2065     $HAVE_LIST_CMDLINE
2066     $HAVE_LIST_PUB
2067     $HEADERS_LIST
2068     $INTRINSICS_LIST
2069     $MATH_FUNCS
2070     $SYSTEM_FUNCS
2071     $THREADS_LIST
2072     $TOOLCHAIN_FEATURES
2073     $TYPES_LIST
2074     atomics_native
2075     dos_paths
2076     dxva2_lib
2077     dxva2api_cobj
2078     libc_msvcrt
2079     libdc1394_1
2080     libdc1394_2
2081     makeinfo
2082     makeinfo_html
2083     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2084     perl
2085     pod2man
2086     sdl2
2087     section_data_rel_ro
2088     texi2html
2089     threads
2090     vaapi_drm
2091     vaapi_x11
2092     vdpau_x11
2093     winrt
2094     xlib
2095 "
2096
2097 # options emitted with CONFIG_ prefix but not available on the command line
2098 CONFIG_EXTRA="
2099     aandcttables
2100     ac3dsp
2101     audio_frame_queue
2102     audiodsp
2103     blockdsp
2104     bswapdsp
2105     cabac
2106     dirac_parse
2107     dvprofile
2108     exif
2109     faandct
2110     faanidct
2111     fdctdsp
2112     flacdsp
2113     fmtconvert
2114     frame_thread_encoder
2115     g722dsp
2116     golomb
2117     gplv3
2118     h263dsp
2119     h264chroma
2120     h264dsp
2121     h264parse
2122     h264pred
2123     h264qpel
2124     hpeldsp
2125     huffman
2126     huffyuvdsp
2127     huffyuvencdsp
2128     idctdsp
2129     iirfilter
2130     mdct15
2131     intrax8
2132     iso_media
2133     ividsp
2134     jpegtables
2135     lgplv3
2136     libx262
2137     llauddsp
2138     llviddsp
2139     llvidencdsp
2140     lpc
2141     lzf
2142     me_cmp
2143     mpeg_er
2144     mpegaudio
2145     mpegaudiodsp
2146     mpegvideo
2147     mpegvideoenc
2148     mss34dsp
2149     pixblockdsp
2150     qpeldsp
2151     qsv
2152     qsvdec
2153     qsvenc
2154     rangecoder
2155     riffdec
2156     riffenc
2157     rtpdec
2158     rtpenc_chain
2159     rv34dsp
2160     sinewin
2161     snappy
2162     srtp
2163     startcode
2164     texturedsp
2165     texturedspenc
2166     tpeldsp
2167     vaapi_encode
2168     vc1dsp
2169     videodsp
2170     vp3dsp
2171     vp56dsp
2172     vp8dsp
2173     vt_bt2020
2174     wma_freqs
2175     wmv2dsp
2176 "
2177
2178 CMDLINE_SELECT="
2179     $ARCH_EXT_LIST
2180     $CONFIG_LIST
2181     $HAVE_LIST_CMDLINE
2182     $THREADS_LIST
2183     asm
2184     cross_compile
2185     debug
2186     extra_warnings
2187     logging
2188     lto
2189     optimizations
2190     rpath
2191     stripping
2192 "
2193
2194 PATHS_LIST="
2195     bindir
2196     datadir
2197     docdir
2198     incdir
2199     libdir
2200     mandir
2201     pkgconfigdir
2202     prefix
2203     shlibdir
2204     install_name_dir
2205 "
2206
2207 CMDLINE_SET="
2208     $PATHS_LIST
2209     ar
2210     arch
2211     as
2212     assert_level
2213     build_suffix
2214     cc
2215     objcc
2216     cpu
2217     cross_prefix
2218     custom_allocator
2219     cxx
2220     dep_cc
2221     doxygen
2222     env
2223     extra_version
2224     gas
2225     host_cc
2226     host_cflags
2227     host_ld
2228     host_ldflags
2229     host_libs
2230     host_os
2231     install
2232     ld
2233     ln_s
2234     logfile
2235     malloc_prefix
2236     nm
2237     optflags
2238     pkg_config
2239     pkg_config_flags
2240     progs_suffix
2241     random_seed
2242     ranlib
2243     samples
2244     strip
2245     sws_max_filter_size
2246     sysinclude
2247     sysroot
2248     target_exec
2249     target_os
2250     target_path
2251     target_samples
2252     tempprefix
2253     toolchain
2254     valgrind
2255     yasmexe
2256 "
2257
2258 CMDLINE_APPEND="
2259     extra_cflags
2260     extra_cxxflags
2261     extra_objcflags
2262     host_cppflags
2263 "
2264
2265 # code dependency declarations
2266
2267 # architecture extensions
2268
2269 armv5te_deps="arm"
2270 armv6_deps="arm"
2271 armv6t2_deps="arm"
2272 armv8_deps="aarch64"
2273 neon_deps_any="aarch64 arm"
2274 intrinsics_neon_deps="neon"
2275 vfp_deps_any="aarch64 arm"
2276 vfpv3_deps="vfp"
2277 setend_deps="arm"
2278
2279 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2280
2281 loongson2_deps="mips"
2282 loongson3_deps="mips"
2283 mipsfpu_deps="mips"
2284 mipsdsp_deps="mips"
2285 mipsdspr2_deps="mips"
2286 mips32r2_deps="mips"
2287 mips32r5_deps="mips"
2288 mips32r6_deps="mips"
2289 mips64r2_deps="mips"
2290 mips64r6_deps="mips"
2291 msa_deps="mipsfpu"
2292 mmi_deps="mips"
2293
2294 altivec_deps="ppc"
2295 dcbzl_deps="ppc"
2296 ldbrx_deps="ppc"
2297 ppc4xx_deps="ppc"
2298 vsx_deps="altivec"
2299 power8_deps="vsx"
2300
2301 cpunop_deps="i686"
2302 x86_64_select="i686"
2303 x86_64_suggest="fast_cmov"
2304
2305 amd3dnow_deps="mmx"
2306 amd3dnowext_deps="amd3dnow"
2307 i686_deps="x86"
2308 mmx_deps="x86"
2309 mmxext_deps="mmx"
2310 sse_deps="mmxext"
2311 sse2_deps="sse"
2312 sse3_deps="sse2"
2313 ssse3_deps="sse3"
2314 sse4_deps="ssse3"
2315 sse42_deps="sse4"
2316 aesni_deps="sse42"
2317 avx_deps="sse42"
2318 xop_deps="avx"
2319 fma3_deps="avx"
2320 fma4_deps="avx"
2321 avx2_deps="avx"
2322
2323 mmx_external_deps="yasm"
2324 mmx_inline_deps="inline_asm"
2325 mmx_suggest="mmx_external mmx_inline"
2326
2327 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2328     eval dep=\$${ext}_deps
2329     eval ${ext}_external_deps='"${dep}_external"'
2330     eval ${ext}_inline_deps='"${dep}_inline"'
2331     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2332 done
2333
2334 aligned_stack_if_any="aarch64 ppc x86"
2335 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2336 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2337 fast_unaligned_if_any="aarch64 ppc x86"
2338 simd_align_if_any="simd_align_16 simd_align_32"
2339 simd_align_16_if_any="altivec neon sse"
2340 simd_align_32_if_any="avx"
2341
2342 # system capabilities
2343 symver_if_any="symver_asm_label symver_gnu_asm"
2344 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2345
2346 # threading support
2347 atomics_gcc_if="sync_val_compare_and_swap"
2348 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2349 atomics_win32_if="MemoryBarrier"
2350 atomics_native_if_any="$ATOMICS_LIST"
2351 w32threads_deps="atomics_native"
2352 threads_if_any="$THREADS_LIST"
2353
2354 # subsystems
2355 dct_select="rdft"
2356 dirac_parse_select="golomb"
2357 error_resilience_select="me_cmp"
2358 faandct_deps="faan fdctdsp"
2359 faanidct_deps="faan idctdsp"
2360 h264dsp_select="startcode"
2361 frame_thread_encoder_deps="encoders threads"
2362 intrax8_select="blockdsp idctdsp"
2363 mdct_select="fft"
2364 mdct15_select="fft"
2365 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2366 mpeg_er_select="error_resilience"
2367 mpegaudio_select="mpegaudiodsp"
2368 mpegaudiodsp_select="dct"
2369 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2370 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2371 vc1dsp_select="h264chroma qpeldsp startcode"
2372 rdft_select="fft"
2373
2374 # decoders / encoders
2375 aac_decoder_select="mdct15 mdct sinewin"
2376 aac_fixed_decoder_select="mdct sinewin"
2377 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2378 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2379 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2380 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2381 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2382 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2383 adpcm_g722_decoder_select="g722dsp"
2384 adpcm_g722_encoder_select="g722dsp"
2385 aic_decoder_select="golomb idctdsp"
2386 alac_encoder_select="lpc"
2387 als_decoder_select="bswapdsp"
2388 amrnb_decoder_select="lsp"
2389 amrwb_decoder_select="lsp"
2390 amv_decoder_select="sp5x_decoder exif"
2391 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2392 ape_decoder_select="bswapdsp llauddsp"
2393 apng_decoder_select="zlib"
2394 apng_encoder_select="llvidencdsp zlib"
2395 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2396 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2397 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2398 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2399 atrac1_decoder_select="mdct sinewin"
2400 atrac3_decoder_select="mdct"
2401 atrac3p_decoder_select="mdct sinewin"
2402 avrn_decoder_select="exif jpegtables"
2403 bink_decoder_select="blockdsp hpeldsp"
2404 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2405 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2406 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2407 cllc_decoder_select="bswapdsp"
2408 comfortnoise_encoder_select="lpc"
2409 cook_decoder_select="audiodsp mdct sinewin"
2410 cscd_decoder_select="lzo"
2411 cscd_decoder_suggest="zlib"
2412 dca_decoder_select="mdct"
2413 dds_decoder_select="texturedsp"
2414 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2415 dnxhd_decoder_select="blockdsp idctdsp"
2416 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2417 dvvideo_decoder_select="dvprofile idctdsp"
2418 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2419 dxa_decoder_select="zlib"
2420 dxv_decoder_select="lzf texturedsp"
2421 eac3_decoder_select="ac3_decoder"
2422 eac3_encoder_select="ac3_encoder"
2423 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2424 eatgq_decoder_select="aandcttables"
2425 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2426 exr_decoder_select="zlib"
2427 ffv1_decoder_select="golomb rangecoder"
2428 ffv1_encoder_select="rangecoder"
2429 ffvhuff_decoder_select="huffyuv_decoder"
2430 ffvhuff_encoder_select="huffyuv_encoder"
2431 fic_decoder_select="golomb"
2432 flac_decoder_select="flacdsp golomb"
2433 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2434 flashsv2_decoder_select="zlib"
2435 flashsv2_encoder_select="zlib"
2436 flashsv_decoder_select="zlib"
2437 flashsv_encoder_select="zlib"
2438 flv_decoder_select="h263_decoder"
2439 flv_encoder_select="h263_encoder"
2440 fourxm_decoder_select="blockdsp bswapdsp"
2441 fraps_decoder_select="bswapdsp huffman"
2442 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2443 g729_decoder_select="audiodsp"
2444 h261_decoder_select="mpegvideo"
2445 h261_encoder_select="aandcttables mpegvideoenc"
2446 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2447 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2448 h263i_decoder_select="h263_decoder"
2449 h263p_decoder_select="h263_decoder"
2450 h263p_encoder_select="h263_encoder"
2451 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2452 h264_decoder_suggest="error_resilience"
2453 hap_decoder_select="snappy texturedsp"
2454 hap_encoder_deps="libsnappy"
2455 hap_encoder_select="texturedspenc"
2456 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2457 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2458 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2459 iac_decoder_select="imc_decoder"
2460 imc_decoder_select="bswapdsp fft mdct sinewin"
2461 indeo3_decoder_select="hpeldsp"
2462 indeo4_decoder_select="ividsp"
2463 indeo5_decoder_select="ividsp"
2464 interplay_video_decoder_select="hpeldsp"
2465 jpegls_decoder_select="golomb mjpeg_decoder"
2466 jpegls_encoder_select="golomb"
2467 jv_decoder_select="blockdsp"
2468 lagarith_decoder_select="llviddsp"
2469 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2470 loco_decoder_select="golomb"
2471 magicyuv_decoder_select="llviddsp"
2472 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2473 metasound_decoder_select="lsp mdct sinewin"
2474 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2475 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2476 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2477 mjpegb_decoder_select="mjpeg_decoder"
2478 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2479 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2480 mlp_decoder_select="mlp_parser"
2481 motionpixels_decoder_select="bswapdsp"
2482 mp1_decoder_select="mpegaudio"
2483 mp1float_decoder_select="mpegaudio"
2484 mp2_decoder_select="mpegaudio"
2485 mp2float_decoder_select="mpegaudio"
2486 mp3_decoder_select="mpegaudio"
2487 mp3adu_decoder_select="mpegaudio"
2488 mp3adufloat_decoder_select="mpegaudio"
2489 mp3float_decoder_select="mpegaudio"
2490 mp3on4_decoder_select="mpegaudio"
2491 mp3on4float_decoder_select="mpegaudio"
2492 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2493 mpc8_decoder_select="mpegaudiodsp"
2494 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2495 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2496 mpegvideo_decoder_select="mpegvideo"
2497 mpeg1video_decoder_select="mpegvideo"
2498 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2499 mpeg2video_decoder_select="mpegvideo"
2500 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2501 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2502 mpeg4_encoder_select="h263_encoder"
2503 msa1_decoder_select="mss34dsp"
2504 msmpeg4v1_decoder_select="h263_decoder"
2505 msmpeg4v2_decoder_select="h263_decoder"
2506 msmpeg4v2_encoder_select="h263_encoder"
2507 msmpeg4v3_decoder_select="h263_decoder"
2508 msmpeg4v3_encoder_select="h263_encoder"
2509 mss2_decoder_select="vc1_decoder mpegvideo"
2510 mts2_decoder_select="mss34dsp"
2511 mxpeg_decoder_select="mjpeg_decoder"
2512 nellymoser_decoder_select="mdct sinewin"
2513 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2514 nuv_decoder_select="idctdsp lzo"
2515 on2avc_decoder_select="mdct"
2516 opus_decoder_deps="swresample"
2517 opus_decoder_select="mdct15"
2518 opus_encoder_select="audio_frame_queue mdct15"
2519 png_decoder_select="zlib"
2520 png_encoder_select="llvidencdsp zlib"
2521 prores_decoder_select="blockdsp idctdsp"
2522 prores_encoder_select="fdctdsp"
2523 qcelp_decoder_select="lsp"
2524 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2525 ra_144_decoder_select="audiodsp"
2526 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2527 ralf_decoder_select="golomb"
2528 rawvideo_decoder_select="bswapdsp"
2529 rscc_decoder_select="zlib"
2530 rtjpeg_decoder_select="me_cmp"
2531 rv10_decoder_select="h263_decoder"
2532 rv10_encoder_select="h263_encoder"
2533 rv20_decoder_select="h263_decoder"
2534 rv20_encoder_select="h263_encoder"
2535 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2536 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2537 screenpresso_decoder_select="zlib"
2538 shorten_decoder_select="golomb bswapdsp"
2539 sipr_decoder_select="lsp"
2540 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2541 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2542 sonic_decoder_select="golomb rangecoder"
2543 sonic_encoder_select="golomb rangecoder"
2544 sonic_ls_encoder_select="golomb rangecoder"
2545 sp5x_decoder_select="mjpeg_decoder"
2546 svq1_decoder_select="hpeldsp"
2547 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2548 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2549 svq3_decoder_suggest="zlib"
2550 tak_decoder_select="audiodsp"
2551 tdsc_decoder_select="zlib mjpeg_decoder"
2552 theora_decoder_select="vp3_decoder"
2553 thp_decoder_select="mjpeg_decoder"
2554 tiff_decoder_suggest="zlib lzma"
2555 tiff_encoder_suggest="zlib"
2556 truehd_decoder_select="mlp_parser"
2557 truemotion2_decoder_select="bswapdsp"
2558 truespeech_decoder_select="bswapdsp"
2559 tscc_decoder_select="zlib"
2560 twinvq_decoder_select="mdct lsp sinewin"
2561 txd_decoder_select="texturedsp"
2562 utvideo_decoder_select="bswapdsp llviddsp"
2563 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2564 vble_decoder_select="llviddsp"
2565 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2566 vc1_qsv_decoder_deps="libmfx"
2567 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2568 vc1image_decoder_select="vc1_decoder"
2569 vorbis_decoder_select="mdct"
2570 vorbis_encoder_select="mdct"
2571 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2572 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2573 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2574 vp6a_decoder_select="vp6_decoder"
2575 vp6f_decoder_select="vp6_decoder"
2576 vp7_decoder_select="h264pred videodsp vp8dsp"
2577 vp8_decoder_select="h264pred videodsp vp8dsp"
2578 vp9_decoder_select="videodsp vp9_parser"
2579 webp_decoder_select="vp8_decoder exif"
2580 wmalossless_decoder_select="llauddsp"
2581 wmapro_decoder_select="mdct sinewin wma_freqs"
2582 wmav1_decoder_select="mdct sinewin wma_freqs"
2583 wmav1_encoder_select="mdct sinewin wma_freqs"
2584 wmav2_decoder_select="mdct sinewin wma_freqs"
2585 wmav2_encoder_select="mdct sinewin wma_freqs"
2586 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2587 wmv1_decoder_select="h263_decoder"
2588 wmv1_encoder_select="h263_encoder"
2589 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2590 wmv2_encoder_select="h263_encoder wmv2dsp"
2591 wmv3_decoder_select="vc1_decoder"
2592 wmv3image_decoder_select="wmv3_decoder"
2593 xma1_decoder_select="wmapro_decoder"
2594 xma2_decoder_select="wmapro_decoder"
2595 zerocodec_decoder_select="zlib"
2596 zlib_decoder_select="zlib"
2597 zlib_encoder_select="zlib"
2598 zmbv_decoder_select="zlib"
2599 zmbv_encoder_select="zlib"
2600
2601 # platform codecs
2602 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2603 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2604
2605 # hardware accelerators
2606 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2607 cuda_deps_any="dlopen LoadLibrary"
2608 cuvid_deps="cuda"
2609 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2610 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2611 dxva2_extralibs="-luser32"
2612 vaapi_deps="va_va_h"
2613 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2614 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2615 vda_deps="vda_framework pthreads"
2616 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2617 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2618 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2619 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2620 xvmc_deps="X11_extensions_XvMClib_h"
2621
2622 h263_vaapi_hwaccel_deps="vaapi"
2623 h263_vaapi_hwaccel_select="h263_decoder"
2624 h263_videotoolbox_hwaccel_deps="videotoolbox"
2625 h263_videotoolbox_hwaccel_select="h263_decoder"
2626 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2627 h264_cuvid_hwaccel_deps="cuda cuvid"
2628 h264_d3d11va_hwaccel_deps="d3d11va"
2629 h264_d3d11va_hwaccel_select="h264_decoder"
2630 h264_dxva2_hwaccel_deps="dxva2"
2631 h264_dxva2_hwaccel_select="h264_decoder"
2632 h264_mediacodec_decoder_deps="mediacodec"
2633 h264_mediacodec_hwaccel_deps="mediacodec"
2634 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2635 h264_mmal_decoder_deps="mmal"
2636 h264_mmal_decoder_select="mmal"
2637 h264_mmal_hwaccel_deps="mmal"
2638 h264_omx_encoder_deps="omx"
2639 h264_qsv_hwaccel_deps="libmfx"
2640 h264_vaapi_hwaccel_deps="vaapi"
2641 h264_vaapi_hwaccel_select="h264_decoder"
2642 h264_vda_decoder_deps="vda"
2643 h264_vda_decoder_select="h264_decoder"
2644 h264_vda_hwaccel_deps="vda"
2645 h264_vda_hwaccel_select="h264_decoder"
2646 h264_vda_old_hwaccel_deps="vda"
2647 h264_vda_old_hwaccel_select="h264_decoder"
2648 h264_vdpau_decoder_deps="vdpau"
2649 h264_vdpau_decoder_select="h264_decoder"
2650 h264_vdpau_hwaccel_deps="vdpau"
2651 h264_vdpau_hwaccel_select="h264_decoder"
2652 h264_videotoolbox_hwaccel_deps="videotoolbox"
2653 h264_videotoolbox_hwaccel_select="h264_decoder"
2654 hevc_cuvid_hwaccel_deps="cuda cuvid"
2655 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2656 hevc_d3d11va_hwaccel_select="hevc_decoder"
2657 hevc_mediacodec_decoder_deps="mediacodec"
2658 hevc_mediacodec_hwaccel_deps="mediacodec"
2659 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2660 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2661 hevc_dxva2_hwaccel_select="hevc_decoder"
2662 hevc_qsv_hwaccel_deps="libmfx"
2663 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2664 hevc_vaapi_hwaccel_select="hevc_decoder"
2665 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2666 hevc_vdpau_hwaccel_select="hevc_decoder"
2667 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2668 mpeg_vdpau_decoder_deps="vdpau"
2669 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2670 mpeg_xvmc_hwaccel_deps="xvmc"
2671 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2672 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2673 mpeg1_vdpau_decoder_deps="vdpau"
2674 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2675 mpeg1_vdpau_hwaccel_deps="vdpau"
2676 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2677 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2678 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2679 mpeg1_xvmc_hwaccel_deps="xvmc"
2680 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2681 mpeg2_crystalhd_decoder_select="crystalhd"
2682 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2683 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2684 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2685 mpeg2_dxva2_hwaccel_deps="dxva2"
2686 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2687 mpeg2_mmal_decoder_deps="mmal"
2688 mpeg2_mmal_decoder_select="mmal"
2689 mpeg2_mmal_hwaccel_deps="mmal"
2690 mpeg2_qsv_hwaccel_deps="libmfx"
2691 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2692 mpeg2_vaapi_hwaccel_deps="vaapi"
2693 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2694 mpeg2_vdpau_hwaccel_deps="vdpau"
2695 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2696 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2697 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2698 mpeg2_xvmc_hwaccel_deps="xvmc"
2699 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2700 mpeg4_crystalhd_decoder_select="crystalhd"
2701 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2702 mpeg4_mediacodec_decoder_deps="mediacodec"
2703 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2704 mpeg4_mmal_decoder_deps="mmal"
2705 mpeg4_mmal_decoder_select="mmal"
2706 mpeg4_mmal_hwaccel_deps="mmal"
2707 mpeg4_omx_encoder_deps="omx"
2708 mpeg4_vaapi_hwaccel_deps="vaapi"
2709 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2710 mpeg4_vdpau_decoder_deps="vdpau"
2711 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2712 mpeg4_vdpau_hwaccel_deps="vdpau"
2713 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2714 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2715 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2716 msmpeg4_crystalhd_decoder_select="crystalhd"
2717 vc1_crystalhd_decoder_select="crystalhd"
2718 vc1_cuvid_hwaccel_deps="cuda cuvid"
2719 vc1_d3d11va_hwaccel_deps="d3d11va"
2720 vc1_d3d11va_hwaccel_select="vc1_decoder"
2721 vc1_dxva2_hwaccel_deps="dxva2"
2722 vc1_dxva2_hwaccel_select="vc1_decoder"
2723 vc1_mmal_decoder_deps="mmal"
2724 vc1_mmal_decoder_select="mmal"
2725 vc1_mmal_hwaccel_deps="mmal"
2726 vc1_qsv_hwaccel_deps="libmfx"
2727 vc1_qsv_hwaccel_select="qsvdec_vc1"
2728 vc1_vaapi_hwaccel_deps="vaapi"
2729 vc1_vaapi_hwaccel_select="vc1_decoder"
2730 vc1_vdpau_decoder_deps="vdpau"
2731 vc1_vdpau_decoder_select="vc1_decoder"
2732 vc1_vdpau_hwaccel_deps="vdpau"
2733 vc1_vdpau_hwaccel_select="vc1_decoder"
2734 vp8_cuvid_hwaccel_deps="cuda cuvid"
2735 vp9_cuvid_hwaccel_deps="cuda cuvid"
2736 vp8_mediacodec_decoder_deps="mediacodec"
2737 vp8_mediacodec_hwaccel_deps="mediacodec"
2738 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2739 vp9_d3d11va_hwaccel_select="vp9_decoder"
2740 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2741 vp9_dxva2_hwaccel_select="vp9_decoder"
2742 vp9_mediacodec_decoder_deps="mediacodec"
2743 vp9_mediacodec_hwaccel_deps="mediacodec"
2744 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2745 vp9_vaapi_hwaccel_select="vp9_decoder"
2746 wmv3_crystalhd_decoder_select="crystalhd"
2747 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2748 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2749 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2750 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2751 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2752
2753 # hardware-accelerated codecs
2754 omx_deps="dlopen pthreads"
2755 omx_extralibs='$ldl'
2756 qsvdec_select="qsv"
2757 qsvenc_select="qsv"
2758 vaapi_encode_deps="vaapi"
2759
2760 hwupload_cuda_filter_deps="cuda"
2761 scale_npp_filter_deps="cuda libnpp"
2762
2763 nvenc_deps="cuda"
2764 nvenc_deps_any="dlopen LoadLibrary"
2765 nvenc_encoder_deps="nvenc"
2766 h264_cuvid_decoder_deps="cuda cuvid"
2767 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2768 h264_nvenc_encoder_deps="nvenc"
2769 h264_qsv_decoder_deps="libmfx"
2770 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2771 h264_qsv_encoder_deps="libmfx"
2772 h264_qsv_encoder_select="qsvenc"
2773 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2774 h264_vaapi_encoder_select="vaapi_encode golomb"
2775
2776 hevc_cuvid_decoder_deps="cuda cuvid"
2777 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2778 hevc_nvenc_encoder_deps="nvenc"
2779 hevc_qsv_decoder_deps="libmfx"
2780 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2781 hevc_qsv_encoder_deps="libmfx"
2782 hevc_qsv_encoder_select="qsvenc"
2783 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2784 hevc_vaapi_encoder_select="vaapi_encode golomb"
2785 mjpeg_cuvid_decoder_deps="cuda cuvid"
2786 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2787 mpeg1_cuvid_decoder_deps="cuda cuvid"
2788 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2789 mpeg2_cuvid_decoder_deps="cuda cuvid"
2790 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2791 mpeg2_qsv_decoder_deps="libmfx"
2792 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2793 mpeg2_qsv_encoder_deps="libmfx"
2794 mpeg2_qsv_encoder_select="qsvenc"
2795 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2796 mpeg2_vaapi_encoder_select="vaapi_encode"
2797 mpeg4_cuvid_decoder_deps="cuda cuvid"
2798 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2799 nvenc_h264_encoder_deps="nvenc"
2800 nvenc_hevc_encoder_deps="nvenc"
2801
2802 vc1_cuvid_decoder_deps="cuda cuvid"
2803 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2804 vp8_cuvid_decoder_deps="cuda cuvid"
2805 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2806 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2807 vp8_vaapi_encoder_select="vaapi_encode"
2808 vp9_cuvid_decoder_deps="cuda cuvid"
2809 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2810
2811 # parsers
2812 h264_parser_select="golomb h264dsp h264parse"
2813 hevc_parser_select="golomb"
2814 mpegvideo_parser_select="mpegvideo"
2815 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2816 vc1_parser_select="vc1dsp"
2817
2818 # bitstream_filters
2819 mjpeg2jpeg_bsf_select="jpegtables"
2820
2821 # external libraries
2822 aac_at_decoder_deps="audiotoolbox"
2823 ac3_at_decoder_deps="audiotoolbox"
2824 ac3_at_decoder_select="ac3_parser"
2825 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2826 alac_at_decoder_deps="audiotoolbox"
2827 amr_nb_at_decoder_deps="audiotoolbox"
2828 avisynth_deps_any="dlopen LoadLibrary"
2829 avisynth_demuxer_deps="avisynth"
2830 avisynth_demuxer_select="riffdec"
2831 eac3_at_decoder_deps="audiotoolbox"
2832 eac3_at_decoder_select="ac3_parser"
2833 gsm_ms_at_decoder_deps="audiotoolbox"
2834 ilbc_at_decoder_deps="audiotoolbox"
2835 mp1_at_decoder_deps="audiotoolbox"
2836 mp2_at_decoder_deps="audiotoolbox"
2837 mp3_at_decoder_deps="audiotoolbox"
2838 pcm_alaw_at_decoder_deps="audiotoolbox"
2839 pcm_mulaw_at_decoder_deps="audiotoolbox"
2840 qdmc_at_decoder_deps="audiotoolbox"
2841 qdm2_at_decoder_deps="audiotoolbox"
2842 aac_at_encoder_deps="audiotoolbox"
2843 aac_at_encoder_select="audio_frame_queue"
2844 alac_at_encoder_deps="audiotoolbox"
2845 alac_at_encoder_select="audio_frame_queue"
2846 ilbc_at_encoder_deps="audiotoolbox"
2847 ilbc_at_encoder_select="audio_frame_queue"
2848 pcm_alaw_at_encoder_deps="audiotoolbox"
2849 pcm_alaw_at_encoder_select="audio_frame_queue"
2850 pcm_mulaw_at_encoder_deps="audiotoolbox"
2851 pcm_mulaw_at_encoder_select="audio_frame_queue"
2852 chromaprint_muxer_deps="chromaprint"
2853 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2854 libcelt_decoder_deps="libcelt"
2855 libfdk_aac_decoder_deps="libfdk_aac"
2856 libfdk_aac_encoder_deps="libfdk_aac"
2857 libfdk_aac_encoder_select="audio_frame_queue"
2858 libgme_demuxer_deps="libgme"
2859 libgsm_decoder_deps="libgsm"
2860 libgsm_encoder_deps="libgsm"
2861 libgsm_ms_decoder_deps="libgsm"
2862 libgsm_ms_encoder_deps="libgsm"
2863 libilbc_decoder_deps="libilbc"
2864 libilbc_encoder_deps="libilbc"
2865 libkvazaar_encoder_deps="libkvazaar"
2866 libmodplug_demuxer_deps="libmodplug"
2867 libmp3lame_encoder_deps="libmp3lame"
2868 libmp3lame_encoder_select="audio_frame_queue"
2869 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2870 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2871 libopencore_amrnb_encoder_select="audio_frame_queue"
2872 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2873 libopenh264_decoder_deps="libopenh264"
2874 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2875 libopenh264_encoder_deps="libopenh264"
2876 libopenjpeg_decoder_deps="libopenjpeg"
2877 libopenjpeg_encoder_deps="libopenjpeg"
2878 libopenmpt_demuxer_deps="libopenmpt"
2879 libopus_decoder_deps="libopus"
2880 libopus_encoder_deps="libopus"
2881 libopus_encoder_select="audio_frame_queue"
2882 libschroedinger_decoder_deps="libschroedinger"
2883 libschroedinger_encoder_deps="libschroedinger"
2884 libshine_encoder_deps="libshine"
2885 libshine_encoder_select="audio_frame_queue"
2886 libspeex_decoder_deps="libspeex"
2887 libspeex_encoder_deps="libspeex"
2888 libspeex_encoder_select="audio_frame_queue"
2889 libtheora_encoder_deps="libtheora"
2890 libtwolame_encoder_deps="libtwolame"
2891 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2892 libvorbis_decoder_deps="libvorbis"
2893 libvorbis_encoder_deps="libvorbis"
2894 libvorbis_encoder_select="audio_frame_queue"
2895 libvpx_vp8_decoder_deps="libvpx"
2896 libvpx_vp8_encoder_deps="libvpx"
2897 libvpx_vp9_decoder_deps="libvpx"
2898 libvpx_vp9_encoder_deps="libvpx"
2899 libwavpack_encoder_deps="libwavpack"
2900 libwebp_encoder_deps="libwebp"
2901 libwebp_anim_encoder_deps="libwebp"
2902 libx262_encoder_deps="libx262"
2903 libx264_encoder_deps="libx264"
2904 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2905 libx264rgb_encoder_select="libx264_encoder"
2906 libx265_encoder_deps="libx265"
2907 libxavs_encoder_deps="libxavs"
2908 libxvid_encoder_deps="libxvid"
2909 libzvbi_teletext_decoder_deps="libzvbi"
2910 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2911 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2912 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2913 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2914 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2915
2916 # demuxers / muxers
2917 ac3_demuxer_select="ac3_parser"
2918 aiff_muxer_select="iso_media"
2919 asf_demuxer_select="riffdec"
2920 asf_o_demuxer_select="riffdec"
2921 asf_muxer_select="riffenc"
2922 asf_stream_muxer_select="asf_muxer"
2923 avi_demuxer_select="iso_media riffdec exif"
2924 avi_muxer_select="riffenc"
2925 caf_demuxer_select="iso_media riffdec"
2926 caf_muxer_select="iso_media"
2927 dash_muxer_select="mp4_muxer"
2928 dirac_demuxer_select="dirac_parser"
2929 dts_demuxer_select="dca_parser"
2930 dtshd_demuxer_select="dca_parser"
2931 dv_demuxer_select="dvprofile"
2932 dv_muxer_select="dvprofile"
2933 dxa_demuxer_select="riffdec"
2934 eac3_demuxer_select="ac3_parser"
2935 f4v_muxer_select="mov_muxer"
2936 fifo_muxer_deps="threads"
2937 flac_demuxer_select="flac_parser"
2938 hds_muxer_select="flv_muxer"
2939 hls_muxer_select="mpegts_muxer"
2940 image2_alias_pix_demuxer_select="image2_demuxer"
2941 image2_brender_pix_demuxer_select="image2_demuxer"
2942 ipod_muxer_select="mov_muxer"
2943 ismv_muxer_select="mov_muxer"
2944 libnut_demuxer_deps="libnut"
2945 libnut_muxer_deps="libnut"
2946 matroska_audio_muxer_select="matroska_muxer"
2947 matroska_demuxer_select="iso_media riffdec"
2948 matroska_demuxer_suggest="bzlib lzo zlib"
2949 matroska_muxer_select="iso_media riffenc"
2950 mmf_muxer_select="riffenc"
2951 mov_demuxer_select="iso_media riffdec"
2952 mov_demuxer_suggest="zlib"
2953 mov_muxer_select="iso_media riffenc rtpenc_chain"
2954 mp3_demuxer_select="mpegaudio_parser"
2955 mp4_muxer_select="mov_muxer"
2956 mpegts_demuxer_select="iso_media"
2957 mpegts_muxer_select="adts_muxer latm_muxer"
2958 mpegtsraw_demuxer_select="mpegts_demuxer"
2959 mxf_d10_muxer_select="mxf_muxer"
2960 mxf_opatom_muxer_select="mxf_muxer"
2961 nut_muxer_select="riffenc"
2962 nuv_demuxer_select="riffdec"
2963 oga_muxer_select="ogg_muxer"
2964 ogg_demuxer_select="dirac_parse"
2965 ogv_muxer_select="ogg_muxer"
2966 opus_muxer_select="ogg_muxer"
2967 psp_muxer_select="mov_muxer"
2968 rtp_demuxer_select="sdp_demuxer"
2969 rtp_muxer_select="golomb"
2970 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2971 rtsp_demuxer_select="http_protocol rtpdec"
2972 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2973 sap_demuxer_select="sdp_demuxer"
2974 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2975 sdp_demuxer_select="rtpdec"
2976 smoothstreaming_muxer_select="ismv_muxer"
2977 spdif_muxer_select="aac_parser"
2978 spx_muxer_select="ogg_muxer"
2979 swf_demuxer_suggest="zlib"
2980 tak_demuxer_select="tak_parser"
2981 tg2_muxer_select="mov_muxer"
2982 tgp_muxer_select="mov_muxer"
2983 vobsub_demuxer_select="mpegps_demuxer"
2984 w64_demuxer_select="wav_demuxer"
2985 w64_muxer_select="wav_muxer"
2986 wav_demuxer_select="riffdec"
2987 wav_muxer_select="riffenc"
2988 webm_muxer_select="iso_media riffenc"
2989 webm_dash_manifest_demuxer_select="matroska_demuxer"
2990 wtv_demuxer_select="mpegts_demuxer riffdec"
2991 wtv_muxer_select="mpegts_muxer riffenc"
2992 xmv_demuxer_select="riffdec"
2993 xwma_demuxer_select="riffdec"
2994
2995 # indevs / outdevs
2996 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2997 alsa_outdev_deps="alsa_asoundlib_h"
2998 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2999 avfoundation_indev_select="avfoundation"
3000 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3001 caca_outdev_deps="libcaca"
3002 decklink_indev_deps="decklink pthreads"
3003 decklink_indev_extralibs="-lstdc++"
3004 decklink_outdev_deps="decklink pthreads"
3005 decklink_outdev_extralibs="-lstdc++"
3006 dshow_indev_deps="IBaseFilter"
3007 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3008 dv1394_indev_deps="dv1394"
3009 dv1394_indev_select="dv_demuxer"
3010 fbdev_indev_deps="linux_fb_h"
3011 fbdev_outdev_deps="linux_fb_h"
3012 gdigrab_indev_deps="CreateDIBSection"
3013 gdigrab_indev_extralibs="-lgdi32"
3014 gdigrab_indev_select="bmp_decoder"
3015 iec61883_indev_deps="libiec61883"
3016 jack_indev_deps="jack_jack_h"
3017 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3018 lavfi_indev_deps="avfilter"
3019 libcdio_indev_deps="libcdio"
3020 libdc1394_indev_deps="libdc1394"
3021 libv4l2_indev_deps="libv4l2"
3022 openal_indev_deps="openal"
3023 opengl_outdev_deps="opengl"
3024 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3025 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3026 pulse_indev_deps="libpulse"
3027 pulse_outdev_deps="libpulse"
3028 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3029 qtkit_indev_select="qtkit"
3030 sdl2_outdev_deps="sdl2"
3031 sndio_indev_deps="sndio_h"
3032 sndio_outdev_deps="sndio_h"
3033 v4l_indev_deps="linux_videodev_h"
3034 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3035 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3036 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3037 vfwcap_indev_extralibs="-lavicap32"
3038 xcbgrab_indev_deps="libxcb"
3039 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3040 xv_outdev_extralibs="-lXv -lX11 -lXext"
3041
3042 # protocols
3043 async_protocol_deps="threads"
3044 bluray_protocol_deps="libbluray"
3045 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3046 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3047 ffrtmpcrypt_protocol_select="tcp_protocol"
3048 ffrtmphttp_protocol_deps="!librtmp_protocol"
3049 ffrtmphttp_protocol_select="http_protocol"
3050 ftp_protocol_select="tcp_protocol"
3051 gopher_protocol_select="network"
3052 http_protocol_select="tcp_protocol"
3053 httpproxy_protocol_select="tcp_protocol"
3054 https_protocol_select="tls_protocol"
3055 icecast_protocol_select="http_protocol"
3056 librtmp_protocol_deps="librtmp"
3057 librtmpe_protocol_deps="librtmp"
3058 librtmps_protocol_deps="librtmp"
3059 librtmpt_protocol_deps="librtmp"
3060 librtmpte_protocol_deps="librtmp"
3061 libsmbclient_protocol_deps="libsmbclient gplv3"
3062 libssh_protocol_deps="libssh"
3063 mmsh_protocol_select="http_protocol"
3064 mmst_protocol_select="network"
3065 rtmp_protocol_deps="!librtmp_protocol"
3066 rtmp_protocol_select="tcp_protocol"
3067 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3068 rtmps_protocol_deps="!librtmp_protocol"
3069 rtmps_protocol_select="tls_protocol"
3070 rtmpt_protocol_select="ffrtmphttp_protocol"
3071 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3072 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3073 rtp_protocol_select="udp_protocol"
3074 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3075 sctp_protocol_select="network"
3076 srtp_protocol_select="rtp_protocol srtp"
3077 tcp_protocol_select="network"
3078 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3079 tls_gnutls_protocol_select="tcp_protocol"
3080 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3081 tls_openssl_protocol_select="tcp_protocol"
3082 tls_schannel_protocol_deps="schannel"
3083 tls_schannel_protocol_select="tcp_protocol"
3084 tls_securetransport_protocol_deps="securetransport"
3085 tls_securetransport_protocol_select="tcp_protocol"
3086 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3087 udp_protocol_select="network"
3088 udplite_protocol_select="network"
3089 unix_protocol_deps="sys_un_h"
3090 unix_protocol_select="network"
3091
3092 # filters
3093 afftfilt_filter_deps="avcodec"
3094 afftfilt_filter_select="fft"
3095 amovie_filter_deps="avcodec avformat"
3096 aresample_filter_deps="swresample"
3097 ass_filter_deps="libass"
3098 asyncts_filter_deps="avresample"
3099 atempo_filter_deps="avcodec"
3100 atempo_filter_select="rdft"
3101 azmq_filter_deps="libzmq"
3102 blackframe_filter_deps="gpl"
3103 boxblur_filter_deps="gpl"
3104 bs2b_filter_deps="libbs2b"
3105 colormatrix_filter_deps="gpl"
3106 cover_rect_filter_deps="avcodec avformat gpl"
3107 cropdetect_filter_deps="gpl"
3108 deinterlace_qsv_filter_deps="libmfx"
3109 deinterlace_vaapi_filter_deps="vaapi"
3110 delogo_filter_deps="gpl"
3111 deshake_filter_select="pixelutils"
3112 drawtext_filter_deps="libfreetype"
3113 eq_filter_deps="gpl"
3114 fftfilt_filter_deps="avcodec"
3115 fftfilt_filter_select="rdft"
3116 find_rect_filter_deps="avcodec avformat gpl"
3117 firequalizer_filter_deps="avcodec"
3118 firequalizer_filter_select="rdft"
3119 flite_filter_deps="libflite"
3120 framerate_filter_select="pixelutils"
3121 frei0r_filter_deps="frei0r dlopen"
3122 frei0r_src_filter_deps="frei0r dlopen"
3123 fspp_filter_deps="gpl"
3124 geq_filter_deps="gpl"
3125 histeq_filter_deps="gpl"
3126 hqdn3d_filter_deps="gpl"
3127 interlace_filter_deps="gpl"
3128 kerndeint_filter_deps="gpl"
3129 ladspa_filter_deps="ladspa dlopen"
3130 mcdeint_filter_deps="avcodec gpl"
3131 movie_filter_deps="avcodec avformat"
3132 mpdecimate_filter_deps="gpl"
3133 mpdecimate_filter_select="pixelutils"
3134 mptestsrc_filter_deps="gpl"
3135 negate_filter_deps="lut_filter"
3136 nnedi_filter_deps="gpl"
3137 ocr_filter_deps="libtesseract"
3138 ocv_filter_deps="libopencv"
3139 owdenoise_filter_deps="gpl"
3140 pan_filter_deps="swresample"
3141 perspective_filter_deps="gpl"
3142 phase_filter_deps="gpl"
3143 pp7_filter_deps="gpl"
3144 pp_filter_deps="gpl postproc"
3145 pullup_filter_deps="gpl"
3146 removelogo_filter_deps="avcodec avformat swscale"
3147 repeatfields_filter_deps="gpl"
3148 resample_filter_deps="avresample"
3149 rubberband_filter_deps="librubberband"
3150 sab_filter_deps="gpl swscale"
3151 scale2ref_filter_deps="swscale"
3152 scale_filter_deps="swscale"
3153 scale_qsv_filter_deps="libmfx"
3154 select_filter_select="pixelutils"
3155 showcqt_filter_deps="avcodec avformat swscale"
3156 showcqt_filter_select="fft"
3157 showfreqs_filter_deps="avcodec"
3158 showfreqs_filter_select="fft"
3159 showspectrum_filter_deps="avcodec"
3160 showspectrum_filter_select="fft"
3161 showspectrumpic_filter_deps="avcodec"
3162 showspectrumpic_filter_select="fft"
3163 smartblur_filter_deps="gpl swscale"
3164 sofalizer_filter_deps="netcdf avcodec"
3165 sofalizer_filter_select="fft"
3166 spectrumsynth_filter_deps="avcodec"
3167 spectrumsynth_filter_select="fft"
3168 spp_filter_deps="gpl avcodec"
3169 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3170 stereo3d_filter_deps="gpl"
3171 subtitles_filter_deps="avformat avcodec libass"
3172 super2xsai_filter_deps="gpl"
3173 pixfmts_super2xsai_test_deps="super2xsai_filter"
3174 tinterlace_filter_deps="gpl"
3175 tinterlace_merge_test_deps="tinterlace_filter"
3176 tinterlace_pad_test_deps="tinterlace_filter"
3177 uspp_filter_deps="gpl avcodec"
3178 vaguedenoiser_filter_deps="gpl"
3179 vidstabdetect_filter_deps="libvidstab"
3180 vidstabtransform_filter_deps="libvidstab"
3181 zmq_filter_deps="libzmq"
3182 zoompan_filter_deps="swscale"
3183 zscale_filter_deps="libzimg"
3184 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3185
3186 # examples
3187 avio_dir_cmd_deps="avformat avutil"
3188 avio_reading_deps="avformat avcodec avutil"
3189 decoding_encoding_example_deps="avcodec avformat avutil"
3190 demuxing_decoding_example_deps="avcodec avformat avutil"
3191 extract_mvs_example_deps="avcodec avformat avutil"
3192 filter_audio_example_deps="avfilter avutil"
3193 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3194 filtering_video_example_deps="avfilter avcodec avformat avutil"
3195 http_multiclient_example_deps="avformat avutil fork"
3196 metadata_example_deps="avformat avutil"
3197 muxing_example_deps="avcodec avformat avutil swscale"
3198 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3199 remuxing_example_deps="avcodec avformat avutil"
3200 resampling_audio_example_deps="avutil swresample"
3201 scaling_video_example_deps="avutil swscale"
3202 transcode_aac_example_deps="avcodec avformat swresample"
3203 transcoding_example_deps="avfilter avcodec avformat avutil"
3204
3205 # libraries, in linking order
3206 avcodec_deps="avutil"
3207 avdevice_deps="avformat avcodec avutil"
3208 avfilter_deps="avutil"
3209 avformat_deps="avcodec avutil"
3210 avresample_deps="avutil"
3211 postproc_deps="avutil gpl"
3212 swresample_deps="avutil"
3213 swscale_deps="avutil"
3214
3215 # programs
3216 ffmpeg_deps="avcodec avfilter avformat swresample"
3217 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3218                null_filter
3219                trim_filter"
3220 ffplay_deps="avcodec avformat swscale swresample sdl2"
3221 ffplay_libs='$sdl2_libs'
3222 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3223 ffprobe_deps="avcodec avformat"
3224 ffserver_deps="avformat fork sarestart"
3225 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3226
3227 # documentation
3228 podpages_deps="perl"
3229 manpages_deps="perl pod2man"
3230 htmlpages_deps="perl"
3231 htmlpages_deps_any="makeinfo_html texi2html"
3232 txtpages_deps="perl makeinfo"
3233 doc_deps_any="manpages htmlpages podpages txtpages"
3234
3235 # default parameters
3236
3237 logfile="config.log"
3238
3239 # installation paths
3240 prefix_default="/usr/local"
3241 bindir_default='${prefix}/bin'
3242 datadir_default='${prefix}/share/ffmpeg'
3243 docdir_default='${prefix}/share/doc/ffmpeg'
3244 incdir_default='${prefix}/include'
3245 libdir_default='${prefix}/lib'
3246 mandir_default='${prefix}/share/man'
3247
3248 # toolchain
3249 ar_default="ar"
3250 cc_default="gcc"
3251 cxx_default="g++"
3252 host_cc_default="gcc"
3253 cp_f="cp -f"
3254 doxygen_default="doxygen"
3255 install="install"
3256 ln_s_default="ln -s -f"
3257 nm_default="nm -g"
3258 objformat="elf"
3259 pkg_config_default=pkg-config
3260 ranlib_default="ranlib"
3261 strip_default="strip"
3262 version_script='--version-script'
3263 yasmexe_default="yasm"
3264 windres_default="windres"
3265
3266 # OS
3267 target_os_default=$(tolower $(uname -s))
3268 host_os=$target_os_default
3269
3270 # machine
3271 if test "$target_os_default" = aix; then
3272     arch_default=$(uname -p)
3273     strip_default="strip -X32_64"
3274 else
3275     arch_default=$(uname -m)
3276 fi
3277 cpu="generic"
3278 intrinsics="none"
3279
3280 # configurable options
3281 enable $PROGRAM_LIST
3282 enable $DOCUMENT_LIST
3283 enable $EXAMPLE_LIST
3284 enable $(filter_out avresample $LIBRARY_LIST)
3285 enable stripping
3286
3287 enable asm
3288 enable debug
3289 enable doc
3290 enable faan faandct faanidct
3291 enable optimizations
3292 enable runtime_cpudetect
3293 enable safe_bitstream_reader
3294 enable static
3295 enable swscale_alpha
3296 enable valgrind_backtrace
3297
3298 sws_max_filter_size_default=256
3299 set_default sws_max_filter_size
3300
3301 # build settings
3302 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3303 LIBPREF="lib"
3304 LIBSUF=".a"
3305 FULLNAME='$(NAME)$(BUILDSUF)'
3306 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3307 SLIBPREF="lib"
3308 SLIBSUF=".so"
3309 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3310 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3311 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3312 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3313 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3314 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3315 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3316
3317 asflags_filter=echo
3318 cflags_filter=echo
3319 ldflags_filter=echo
3320
3321 AS_C='-c'
3322 AS_O='-o $@'
3323 CC_C='-c'
3324 CC_E='-E -o $@'
3325 CC_O='-o $@'
3326 CXX_C='-c'
3327 CXX_O='-o $@'
3328 OBJCC_C='-c'
3329 OBJCC_E='-E -o $@'
3330 OBJCC_O='-o $@'
3331 LD_O='-o $@'
3332 LD_LIB='-l%'
3333 LD_PATH='-L'
3334 HOSTCC_C='-c'
3335 HOSTCC_E='-E -o $@'
3336 HOSTCC_O='-o $@'
3337 HOSTLD_O='-o $@'
3338
3339 host_libs='-lm'
3340 host_cflags_filter=echo
3341 host_ldflags_filter=echo
3342
3343 target_path='$(CURDIR)'
3344
3345 # since the object filename is not given with the -MM flag, the compiler
3346 # is only able to print the basename, and we must add the path ourselves
3347 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3348 DEPFLAGS='-MM'
3349
3350 # find source path
3351 if test -f configure; then
3352     source_path=.
3353 else
3354     source_path=$(cd $(dirname "$0"); pwd)
3355     case "$source_path" in
3356         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3357     esac
3358     test -e "$source_path/config.h" &&
3359         die "Out of tree builds are impossible with config.h in source dir."
3360 fi
3361
3362 for v in "$@"; do
3363     r=${v#*=}
3364     l=${v%"$r"}
3365     r=$(sh_quote "$r")
3366     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3367 done
3368
3369 find_things(){
3370     thing=$1
3371     pattern=$2
3372     file=$source_path/$3
3373     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3374 }
3375
3376 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3377 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3378 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3379 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3380 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3381 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3382 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3383 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3384 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3385
3386 find_things_extern(){
3387     thing=$1
3388     pattern=$2
3389     file=$source_path/$3
3390     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3391 }
3392
3393 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3394 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3395
3396 ALL_COMPONENTS="
3397     $BSF_LIST
3398     $DECODER_LIST
3399     $DEMUXER_LIST
3400     $ENCODER_LIST
3401     $FILTER_LIST
3402     $HWACCEL_LIST
3403     $INDEV_LIST
3404     $MUXER_LIST
3405     $OUTDEV_LIST
3406     $PARSER_LIST
3407     $PROTOCOL_LIST
3408 "
3409
3410 for n in $COMPONENT_LIST; do
3411     v=$(toupper ${n%s})_LIST
3412     eval enable \$$v
3413     eval ${n}_if_any="\$$v"
3414 done
3415
3416 enable $ARCH_EXT_LIST
3417
3418 die_unknown(){
3419     echo "Unknown option \"$1\"."
3420     echo "See $0 --help for available options."
3421     exit 1
3422 }
3423
3424 print_in_columns() {
3425     cols=$(expr $ncols / 24)
3426     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3427 }
3428
3429 show_list() {
3430     suffix=_$1
3431     shift
3432     echo $* | sed s/$suffix//g | print_in_columns
3433     exit 0
3434 }
3435
3436 rand_list(){
3437     IFS=', '
3438     set -- $*
3439     unset IFS
3440     for thing; do
3441         comp=${thing%:*}
3442         prob=${thing#$comp}
3443         prob=${prob#:}
3444         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3445         echo "prob ${prob:-0.5}"
3446         printf '%s\n' $comp
3447     done
3448 }
3449
3450 do_random(){
3451     action=$1
3452     shift
3453     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3454     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3455 }
3456
3457 for opt do
3458     optval="${opt#*=}"
3459     case "$opt" in
3460         --extra-ldflags=*)
3461             add_ldflags $optval
3462         ;;
3463         --extra-ldexeflags=*)
3464             add_ldexeflags $optval
3465         ;;
3466         --extra-ldlibflags=*)
3467             add_ldlibflags $optval
3468         ;;
3469         --extra-libs=*)
3470             add_extralibs $optval
3471         ;;
3472         --disable-devices)
3473             disable $INDEV_LIST $OUTDEV_LIST
3474         ;;
3475         --enable-debug=*)
3476             debuglevel="$optval"
3477         ;;
3478         --disable-programs)
3479             disable $PROGRAM_LIST
3480         ;;
3481         --disable-everything)
3482             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3483         ;;
3484         --disable-all)
3485             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3486             disable $LIBRARY_LIST $PROGRAM_LIST doc
3487             enable avutil
3488         ;;
3489         --enable-random|--disable-random)
3490             action=${opt%%-random}
3491             do_random ${action#--} $COMPONENT_LIST
3492         ;;
3493         --enable-random=*|--disable-random=*)
3494             action=${opt%%-random=*}
3495             do_random ${action#--} $optval
3496         ;;
3497         --enable-*=*|--disable-*=*)
3498             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3499             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3500             eval list=\$$(toupper $thing)_LIST
3501             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3502             list=$(filter "$name" $list)
3503             [ "$list" = "" ] && warn "Option $opt did not match anything"
3504             $action $list
3505         ;;
3506         --enable-?*|--disable-?*)
3507             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3508             if is_in $option $COMPONENT_LIST; then
3509                 test $action = disable && action=unset
3510                 eval $action \$$(toupper ${option%s})_LIST
3511             elif is_in $option $CMDLINE_SELECT; then
3512                 $action $option
3513             else
3514                 die_unknown $opt
3515             fi
3516         ;;
3517         --list-*)
3518             NAME="${opt#--list-}"
3519             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3520             NAME=${NAME%s}
3521             eval show_list $NAME \$$(toupper $NAME)_LIST
3522         ;;
3523         --help|-h) show_help
3524         ;;
3525         --fatal-warnings) enable fatal_warnings
3526         ;;
3527         *)
3528             optname="${opt%%=*}"
3529             optname="${optname#--}"
3530             optname=$(echo "$optname" | sed 's/-/_/g')
3531             if is_in $optname $CMDLINE_SET; then
3532                 eval $optname='$optval'
3533             elif is_in $optname $CMDLINE_APPEND; then
3534                 append $optname "$optval"
3535             else
3536                 die_unknown $opt
3537             fi
3538         ;;
3539     esac
3540 done
3541
3542 for e in $env; do
3543     eval "export $e"
3544 done
3545
3546 # Mark specifically enabled, but normally autodetected libraries as requested.
3547 for lib in $AUTODETECT_LIBS; do
3548     enabled $lib && request $lib
3549 done
3550
3551 # Enable platform codecs by default.
3552 enable_weak audiotoolbox
3553
3554 # Enable hwaccels by default.
3555 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3556 enable_weak xlib
3557
3558 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3559
3560 disabled logging && logfile=/dev/null
3561
3562 # Disable all the library-specific components if the library itself
3563 # is disabled, see AVCODEC_LIST and following _LIST variables.
3564
3565 disable_components(){
3566     disabled ${1} && disable $(
3567         eval components="\$$(toupper ${1})_COMPONENTS"
3568         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3569     )
3570 }
3571
3572 map 'disable_components $v' $LIBRARY_LIST
3573
3574 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3575 set >> $logfile
3576
3577 test -n "$valgrind" && toolchain="valgrind-memcheck"
3578
3579 case "$toolchain" in
3580     *-asan)
3581         cc_default="${toolchain%-asan}"
3582         add_cflags  -fsanitize=address
3583         add_ldflags -fsanitize=address
3584     ;;
3585     *-msan)
3586         cc_default="${toolchain%-msan}"
3587         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3588         add_ldflags -fsanitize=memory
3589     ;;
3590     *-tsan)
3591         cc_default="${toolchain%-tsan}"
3592         add_cflags  -fsanitize=thread -fPIE
3593         add_ldflags -fsanitize=thread -pie
3594         case "$toolchain" in
3595             gcc-tsan)
3596                 add_cflags  -fPIC
3597                 add_ldflags -fPIC
3598                 ;;
3599         esac
3600     ;;
3601     *-usan)
3602         cc_default="${toolchain%-usan}"
3603         add_cflags  -fsanitize=undefined
3604         add_ldflags -fsanitize=undefined
3605     ;;
3606     valgrind-*)
3607         target_exec_default="valgrind"
3608         case "$toolchain" in
3609             valgrind-massif)
3610                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3611                 ;;
3612             valgrind-memcheck)
3613                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3614                 ;;
3615         esac
3616     ;;
3617     msvc)
3618         # Check whether the current MSVC version needs the C99 converter.
3619         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3620         # support enough of C99 to build ffmpeg. Default to the new
3621         # behaviour if the regexp was unable to match anything, since this
3622         # successfully parses the version number of existing supported
3623         # versions that require the converter (MSVC 2010 and 2012).
3624         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3625         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3626             cc_default="cl"
3627         else
3628             cc_default="c99wrap cl"
3629         fi
3630         ld_default="$source_path/compat/windows/mslink"
3631         nm_default="dumpbin -symbols"
3632         ar_default="lib"
3633         case "$arch" in
3634         arm*)
3635             as_default="armasm"
3636             ;;
3637         esac
3638         target_os_default="win32"
3639         # Use a relative path for TMPDIR. This makes sure all the
3640         # ffconf temp files are written with a relative path, avoiding
3641         # issues with msys/win32 path conversion for MSVC parameters
3642         # such as -Fo<file> or -out:<file>.
3643         TMPDIR=.
3644     ;;
3645     icl)
3646         cc_default="icl"
3647         ld_default="xilink"
3648         nm_default="dumpbin -symbols"
3649         ar_default="xilib"
3650         target_os_default="win32"
3651         TMPDIR=.
3652     ;;
3653     gcov)
3654         add_cflags  -fprofile-arcs -ftest-coverage
3655         add_ldflags -fprofile-arcs -ftest-coverage
3656     ;;
3657     llvm-cov)
3658         add_cflags -fprofile-arcs -ftest-coverage
3659         add_ldflags --coverage
3660     ;;
3661     hardened)
3662         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3663         add_cflags   -fno-strict-overflow -fstack-protector-all
3664         add_ldflags  -Wl,-z,relro -Wl,-z,now
3665         add_cflags   -fPIE
3666         add_ldexeflags -fPIE -pie
3667     ;;
3668     ?*)
3669         die "Unknown toolchain $toolchain"
3670     ;;
3671 esac
3672
3673 test -n "$cross_prefix" && enable cross_compile
3674
3675 if enabled cross_compile; then
3676     test -n "$arch" && test -n "$target_os" ||
3677         die "Must specify target arch and OS when cross-compiling"
3678 fi
3679
3680 ar_default="${cross_prefix}${ar_default}"
3681 cc_default="${cross_prefix}${cc_default}"
3682 cxx_default="${cross_prefix}${cxx_default}"
3683 nm_default="${cross_prefix}${nm_default}"
3684 pkg_config_default="${cross_prefix}${pkg_config_default}"
3685 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3686     ranlib_default="${cross_prefix}${ranlib_default} -D"
3687 else
3688     ranlib_default="${cross_prefix}${ranlib_default}"
3689 fi
3690 strip_default="${cross_prefix}${strip_default}"
3691 windres_default="${cross_prefix}${windres_default}"
3692
3693 sysinclude_default="${sysroot}/usr/include"
3694
3695 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3696     target_exec target_os yasmexe
3697 enabled cross_compile || host_cc_default=$cc
3698 set_default host_cc
3699
3700 pkg_config_fail_message=""
3701 if ! $pkg_config --version >/dev/null 2>&1; then
3702     warn "$pkg_config not found, library detection may fail."
3703     pkg_config=false
3704 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3705     pkg_config_fail_message="
3706 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3707 fi
3708
3709 if test $doxygen != $doxygen_default && \
3710   ! $doxygen --version >/dev/null 2>&1; then
3711     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3712 fi
3713
3714 exesuf() {
3715     case $1 in
3716         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3717     esac
3718 }
3719
3720 EXESUF=$(exesuf $target_os)
3721 HOSTEXESUF=$(exesuf $host_os)
3722
3723 # set temporary file name
3724 : ${TMPDIR:=$TEMPDIR}
3725 : ${TMPDIR:=$TMP}
3726 : ${TMPDIR:=/tmp}
3727
3728 if [ -n "$tempprefix" ] ; then
3729     mktemp(){
3730         echo $tempprefix.${HOSTNAME}.${UID}
3731     }
3732 elif ! check_cmd mktemp -u XXXXXX; then
3733     # simple replacement for missing mktemp
3734     # NOT SAFE FOR GENERAL USE
3735     mktemp(){
3736         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3737     }
3738 fi
3739
3740 tmpfile(){
3741     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3742         (set -C; exec > $tmp) 2>/dev/null ||
3743         die "Unable to create temporary file in $TMPDIR."
3744     append TMPFILES $tmp
3745     eval $1=$tmp
3746 }
3747
3748 trap 'rm -f -- $TMPFILES' EXIT
3749
3750 tmpfile TMPASM .asm
3751 tmpfile TMPC   .c
3752 tmpfile TMPCPP .cpp
3753 tmpfile TMPE   $EXESUF
3754 tmpfile TMPH   .h
3755 tmpfile TMPM   .m
3756 tmpfile TMPO   .o
3757 tmpfile TMPS   .S
3758 tmpfile TMPSH  .sh
3759 tmpfile TMPV   .ver
3760
3761 unset -f mktemp
3762
3763 chmod +x $TMPE
3764
3765 # make sure we can execute files in $TMPDIR
3766 cat > $TMPSH 2>> $logfile <<EOF
3767 #! /bin/sh
3768 EOF
3769 chmod +x $TMPSH >> $logfile 2>&1
3770 if ! $TMPSH >> $logfile 2>&1; then
3771     cat <<EOF
3772 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3773 variable to another directory and make sure that it is not mounted noexec.
3774 EOF
3775     die "Sanity test failed."
3776 fi
3777
3778 armasm_flags(){
3779     for flag; do
3780         case $flag in
3781             # Filter out MSVC cl.exe options from cflags that shouldn't
3782             # be passed to gas-preprocessor
3783             -M[TD]*)                                            ;;
3784             *)                  echo $flag                      ;;
3785         esac
3786    done
3787 }
3788
3789 ccc_flags(){
3790     for flag; do
3791         case $flag in
3792             -std=c99)           echo -c99                       ;;
3793             -mcpu=*)            echo -arch ${flag#*=}           ;;
3794             -mieee)             echo -ieee                      ;;
3795             -O*|-fast)          echo $flag                      ;;
3796             -fno-math-errno)    echo -assume nomath_errno       ;;
3797             -g)                 echo -g3                        ;;
3798             -Wall)              echo -msg_enable level2         ;;
3799             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3800             -Wl,*)              echo $flag                      ;;
3801             -f*|-W*)                                            ;;
3802             *)                  echo $flag                      ;;
3803         esac
3804    done
3805 }
3806
3807 cparser_flags(){
3808     for flag; do
3809         case $flag in
3810             -Wno-switch)             echo -Wno-switch-enum ;;
3811             -Wno-format-zero-length) ;;
3812             -Wdisabled-optimization) ;;
3813             -Wno-pointer-sign)       echo -Wno-other ;;
3814             *)                       echo $flag ;;
3815         esac
3816     done
3817 }
3818
3819 msvc_common_flags(){
3820     for flag; do
3821         case $flag in
3822             # In addition to specifying certain flags under the compiler
3823             # specific filters, they must be specified here as well or else the
3824             # generic catch all at the bottom will print the original flag.
3825             -Wall)                ;;
3826             -std=c99)             ;;
3827             # Common flags
3828             -fomit-frame-pointer) ;;
3829             -g)                   echo -Z7 ;;
3830             -fno-math-errno)      ;;
3831             -fno-common)          ;;
3832             -fno-signed-zeros)    ;;
3833             -fPIC)                ;;
3834             -mthumb)              ;;
3835             -march=*)             ;;
3836             -lz)                  echo zlib.lib ;;
3837             -lavifil32)           echo vfw32.lib ;;
3838             -lavicap32)           echo vfw32.lib user32.lib ;;
3839             -lx264)               echo libx264.lib ;;
3840             -l*)                  echo ${flag#-l}.lib ;;
3841             -LARGEADDRESSAWARE)   echo $flag ;;
3842             -L*)                  echo -libpath:${flag#-L} ;;
3843             *)                    echo $flag ;;
3844         esac
3845     done
3846 }
3847
3848 msvc_flags(){
3849     msvc_common_flags "$@"
3850     for flag; do
3851         case $flag in
3852             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3853                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3854                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3855                                        -wd4307 \
3856                                        -wd4273 -wd4554 -wd4701 ;;
3857         esac
3858     done
3859 }
3860
3861 icl_flags(){
3862     msvc_common_flags "$@"
3863     for flag; do
3864         case $flag in
3865             # Despite what Intel's documentation says -Wall, which is supported
3866             # on Windows, does enable remarks so disable them here.
3867             -Wall)                echo $flag -Qdiag-disable:remark ;;
3868             -std=c99)             echo -Qstd=c99 ;;
3869             -flto)                echo -ipo ;;
3870         esac
3871     done
3872 }
3873
3874 icc_flags(){
3875     for flag; do
3876         case $flag in
3877             -flto)                echo -ipo ;;
3878             *)                    echo $flag ;;
3879         esac
3880     done
3881 }
3882
3883 pgi_flags(){
3884     for flag; do
3885         case $flag in
3886             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3887             -fomit-frame-pointer) echo -Mnoframe ;;
3888             -g)                   echo -gopt ;;
3889             *)                    echo $flag ;;
3890         esac
3891     done
3892 }
3893
3894 suncc_flags(){
3895     for flag; do
3896         case $flag in
3897             -march=*|-mcpu=*)
3898                 case "${flag#*=}" in
3899                     native)                   echo -xtarget=native       ;;
3900                     v9|niagara)               echo -xarch=sparc          ;;
3901                     ultrasparc)               echo -xarch=sparcvis       ;;
3902                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3903                     i586|pentium)             echo -xchip=pentium        ;;
3904                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3905                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3906                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3907                     pentium4*)          echo -xtarget=pentium4           ;;
3908                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3909                     *-sse3)             echo -xarch=sse3                 ;;
3910                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3911                     bonnell)                   echo -xarch=ssse3         ;;
3912                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3913                     westmere)                  echo -xtarget=westmere    ;;
3914                     silvermont)                echo -xarch=sse4_2        ;;
3915                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3916                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3917                                                echo -xarch=avx           ;;
3918                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3919                     btver1)                    echo -xarch=amdsse4a      ;;
3920                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3921                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3922                     k8|opteron|athlon64|athlon-fx)
3923                                                echo -xarch=sse2a         ;;
3924                     athlon*)                   echo -xarch=pentium_proa  ;;
3925                 esac
3926                 ;;
3927             -std=c99)             echo -xc99              ;;
3928             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3929             -fPIC)                echo -KPIC -xcode=pic32 ;;
3930             -W*,*)                echo $flag              ;;
3931             -f*-*|-W*|-mimpure-text)                      ;;
3932             -shared)              echo -G                 ;;
3933             *)                    echo $flag              ;;
3934         esac
3935     done
3936 }
3937
3938 tms470_flags(){
3939     for flag; do
3940         case $flag in
3941             -march=*|-mcpu=*)
3942                 case "${flag#*=}" in
3943                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3944                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3945                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3946                     armv6*|arm11*)          echo -mv=6   ;;
3947                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3948                                             echo -mv=5e  ;;
3949                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3950                 esac
3951                 ;;
3952             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3953             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3954             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3955             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3956             -msoft-float)   echo --float_support=vfplib       ;;
3957             -O[0-3]|-mf=*)  echo $flag                        ;;
3958             -g)             echo -g -mn                       ;;
3959             -pds=*)         echo $flag                        ;;
3960             -D*|-I*)        echo $flag                        ;;
3961             --gcc|--abi=*)  echo $flag                        ;;
3962             -me)            echo $flag                        ;;
3963         esac
3964     done
3965 }
3966
3967 probe_cc(){
3968     pfx=$1
3969     _cc=$2
3970     first=$3
3971
3972     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3973     unset _ld_o _ldflags _ld_lib _ld_path
3974     unset _depflags _DEPCMD _DEPFLAGS
3975     _flags_filter=echo
3976
3977     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3978         true # no-op to avoid reading stdin in following checks
3979     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3980         _type=llvm_gcc
3981         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3982         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3983         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3984         _cflags_speed='-O3'
3985         _cflags_size='-Os'
3986     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3987         _type=gcc
3988         gcc_version=$($_cc --version | head -n1)
3989         gcc_basever=$($_cc -dumpversion)
3990         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3991         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3992         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3993         case $gcc_basever in
3994             2) ;;
3995             2.*) ;;
3996             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3997         esac
3998         if [ "$first" = true ]; then
3999             case $gcc_basever in
4000                 4.2*)
4001                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4002             esac
4003         fi
4004         _cflags_speed='-O3'
4005         _cflags_size='-Os'
4006     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4007         _type=icc
4008         _ident=$($_cc --version | head -n1)
4009         _depflags='-MMD'
4010         _cflags_speed='-O3'
4011         _cflags_size='-Os'
4012         _cflags_noopt='-O1'
4013         _flags_filter=icc_flags
4014     elif $_cc -v 2>&1 | grep -q xlc; then
4015         _type=xlc
4016         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4017         _cflags_speed='-O5'
4018         _cflags_size='-O5 -qcompact'
4019     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4020         _type=ccc
4021         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4022         _DEPFLAGS='-M'
4023         _cflags_speed='-fast'
4024         _cflags_size='-O1'
4025         _flags_filter=ccc_flags
4026     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4027         test -d "$sysroot" || die "No valid sysroot specified."
4028         _type=armcc
4029         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4030         armcc_conf="$PWD/armcc.conf"
4031         $_cc --arm_linux_configure                 \
4032              --arm_linux_config_file="$armcc_conf" \
4033              --configure_sysroot="$sysroot"        \
4034              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4035              die "Error creating armcc configuration file."
4036         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4037         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4038         as_default="${cross_prefix}gcc"
4039         _depflags='-MMD'
4040         _cflags_speed='-O3'
4041         _cflags_size='-Os'
4042     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4043         _type=tms470
4044         _ident=$($_cc -version | head -n1 | tr -s ' ')
4045         _flags='--gcc --abi=eabi -me'
4046         _cc_e='-ppl -fe=$@'
4047         _cc_o='-fe=$@'
4048         _depflags='-ppa -ppd=$(@:.o=.d)'
4049         _cflags_speed='-O3 -mf=5'
4050         _cflags_size='-O3 -mf=2'
4051         _flags_filter=tms470_flags
4052     elif $_cc -v 2>&1 | grep -q clang; then
4053         _type=clang
4054         _ident=$($_cc --version 2>/dev/null | head -n1)
4055         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4056         _cflags_speed='-O3'
4057         _cflags_size='-Oz'
4058     elif $_cc -V 2>&1 | grep -q Sun; then
4059         _type=suncc
4060         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4061         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4062         _DEPFLAGS='-xM1 -xc99'
4063         _ldflags='-std=c99'
4064         _cflags_speed='-O5'
4065         _cflags_size='-O5 -xspace'
4066         _flags_filter=suncc_flags
4067     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4068         _type=pathscale
4069         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4070         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4071         _cflags_speed='-O2'
4072         _cflags_size='-Os'
4073         _flags_filter='filter_out -Wdisabled-optimization'
4074     elif $_cc -v 2>&1 | grep -q Open64; then
4075         _type=open64
4076         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4077         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4078         _cflags_speed='-O2'
4079         _cflags_size='-Os'
4080         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4081     elif $_cc -V 2>&1 | grep -q Portland; then
4082         _type=pgi
4083         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4084         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4085         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4086         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4087         _cflags_noopt="-O"
4088         _flags_filter=pgi_flags
4089     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4090         _type=armasm
4091         _ident=$($_cc | head -n1)
4092         # 4509: "This form of conditional instruction is deprecated"
4093         _flags="-nologo -ignore 4509"
4094         _flags_filter=armasm_flags
4095     elif $_cc 2>&1 | grep -q Intel; then
4096         _type=icl
4097         _ident=$($_cc 2>&1 | head -n1)
4098         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4099         # Not only is O3 broken on 13.x+ but it is slower on all previous
4100         # versions (tested) as well.
4101         _cflags_speed="-O2"
4102         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4103         if $_cc 2>&1 | grep -q Linker; then
4104             _ld_o='-out:$@'
4105         else
4106             _ld_o='-Fe$@'
4107         fi
4108         _cc_o='-Fo$@'
4109         _cc_e='-P'
4110         _flags_filter=icl_flags
4111         _ld_lib='lib%.a'
4112         _ld_path='-libpath:'
4113         # -Qdiag-error to make icl error when seeing certain unknown arguments
4114         _flags='-nologo -Qdiag-error:4044,10157'
4115         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4116         # with MSVC which enables it by default.
4117         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4118         disable stripping
4119     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4120         # lld can emulate multiple different linkers; in ms link.exe mode,
4121         # the -? parameter gives the help output which contains an identifyable
4122         # string, while it gives an error in other modes.
4123         _type=lld-link
4124         # The link.exe mode doesn't have a switch for getting the version,
4125         # but we can force it back to gnu mode and get the version from there.
4126         _ident=$($_cc -flavor gnu --version)
4127         _ld_o='-out:$@'
4128         _flags_filter=msvc_flags
4129         _ld_lib='lib%.a'
4130         _ld_path='-libpath:'
4131     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4132         _type=msvc
4133         _ident=$($_cc 2>&1 | head -n1)
4134         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4135         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4136         _cflags_speed="-O2"
4137         _cflags_size="-O1"
4138         if $_cc -nologo- 2>&1 | grep -q Linker; then
4139             _ld_o='-out:$@'
4140         else
4141             _ld_o='-Fe$@'
4142         fi
4143         _cc_o='-Fo$@'
4144         _cc_e='-P -Fi$@'
4145         _flags_filter=msvc_flags
4146         _ld_lib='lib%.a'
4147         _ld_path='-libpath:'
4148         _flags='-nologo'
4149         disable stripping
4150     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4151         _type=cparser
4152         _ident=$($_cc --version | head -n1)
4153         _depflags='-MMD'
4154         _cflags_speed='-O4'
4155         _cflags_size='-O2'
4156         _flags_filter=cparser_flags
4157     fi
4158
4159     eval ${pfx}_type=\$_type
4160     eval ${pfx}_ident=\$_ident
4161 }
4162
4163 set_ccvars(){
4164     eval ${1}_C=\${_cc_c-\${${1}_C}}
4165     eval ${1}_E=\${_cc_e-\${${1}_E}}
4166     eval ${1}_O=\${_cc_o-\${${1}_O}}
4167
4168     if [ -n "$_depflags" ]; then
4169         eval ${1}_DEPFLAGS=\$_depflags
4170     else
4171         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4172         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4173         eval DEP${1}FLAGS=\$_flags
4174     fi
4175 }
4176
4177 probe_cc cc "$cc" "true"
4178 cflags_filter=$_flags_filter
4179 cflags_speed=$_cflags_speed
4180 cflags_size=$_cflags_size
4181 cflags_noopt=$_cflags_noopt
4182 add_cflags $_flags $_cflags
4183 cc_ldflags=$_ldflags
4184 set_ccvars CC
4185
4186 probe_cc hostcc "$host_cc"
4187 host_cflags_filter=$_flags_filter
4188 add_host_cflags  $_flags $_cflags
4189 set_ccvars HOSTCC
4190
4191 test -n "$cc_type" && enable $cc_type ||
4192     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4193
4194 : ${as_default:=$cc}
4195 : ${objcc_default:=$cc}
4196 : ${dep_cc_default:=$cc}
4197 : ${ld_default:=$cc}
4198 : ${host_ld_default:=$host_cc}
4199 set_default ar as objcc dep_cc ld ln_s host_ld windres
4200
4201 probe_cc as "$as"
4202 asflags_filter=$_flags_filter
4203 add_asflags $_flags $_cflags
4204 set_ccvars AS
4205
4206 probe_cc objcc "$objcc"
4207 objcflags_filter=$_flags_filter
4208 add_objcflags $_flags $_cflags
4209 set_ccvars OBJC
4210
4211 probe_cc ld "$ld"
4212 ldflags_filter=$_flags_filter
4213 add_ldflags $_flags $_ldflags
4214 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4215 LD_O=${_ld_o-$LD_O}
4216 LD_LIB=${_ld_lib-$LD_LIB}
4217 LD_PATH=${_ld_path-$LD_PATH}
4218
4219 probe_cc hostld "$host_ld"
4220 host_ldflags_filter=$_flags_filter
4221 add_host_ldflags $_flags $_ldflags
4222 HOSTLD_O=${_ld_o-$HOSTLD_O}
4223
4224 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4225     probe_cc depcc "$dep_cc"
4226     CCDEP=${_DEPCMD:-$DEPCMD}
4227     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4228     DEPCCFLAGS=$_flags
4229 fi
4230
4231 if $ar 2>&1 | grep -q Microsoft; then
4232     arflags="-nologo"
4233     ar_o='-out:$@'
4234 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4235     arflags="rq"
4236     ar_o='$@'
4237 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4238     arflags='-Xany -r -c'
4239     ar_o='$@'
4240 elif $ar 2>&1 | grep -q "\[D\] "; then
4241     arflags="rcD"
4242     ar_o='$@'
4243 else
4244     arflags="rc"
4245     ar_o='$@'
4246 fi
4247
4248 add_cflags $extra_cflags
4249 add_cxxflags $extra_cxxflags
4250 add_objcflags $extra_objcflags
4251 add_asflags $extra_cflags
4252
4253 if test -n "$sysroot"; then
4254     case "$cc_type" in
4255         gcc|llvm_gcc|clang)
4256             add_cppflags --sysroot="$sysroot"
4257             add_ldflags --sysroot="$sysroot"
4258 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4259             add_cppflags -isysroot "$sysroot"
4260             add_ldflags -isysroot "$sysroot"
4261         ;;
4262         tms470)
4263             add_cppflags -I"$sysinclude"
4264             add_ldflags  --sysroot="$sysroot"
4265         ;;
4266     esac
4267 fi
4268
4269 if test "$cpu" = host; then
4270     enabled cross_compile &&
4271         die "--cpu=host makes no sense when cross-compiling."
4272
4273     case "$cc_type" in
4274         gcc|llvm_gcc)
4275             check_native(){
4276                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4277                 sed -n "/cc1.*$1=/{
4278                             s/.*$1=\\([^ ]*\\).*/\\1/
4279                             p
4280                             q
4281                         }" $TMPE
4282             }
4283             cpu=$(check_native -march || check_native -mcpu)
4284         ;;
4285         clang)
4286             check_native(){
4287                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4288                 sed -n "/cc1.*-target-cpu /{
4289                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4290                             p
4291                             q
4292                         }" $TMPE
4293             }
4294             cpu=$(check_native -march)
4295         ;;
4296     esac
4297
4298     test "${cpu:-host}" = host &&
4299         die "--cpu=host not supported with compiler $cc"
4300 fi
4301
4302 # Deal with common $arch aliases
4303 case "$arch" in
4304     aarch64|arm64)
4305         arch="aarch64"
4306     ;;
4307     arm*|iPad*|iPhone*)
4308         arch="arm"
4309     ;;
4310     mips*|IP*)
4311         case "$arch" in
4312         *el)
4313             add_cppflags -EL
4314             add_ldflags -EL
4315         ;;
4316         *eb)
4317             add_cppflags -EB
4318             add_ldflags -EB
4319         ;;
4320         esac
4321         arch="mips"
4322     ;;
4323     parisc*|hppa*)
4324         arch="parisc"
4325     ;;
4326     "Power Macintosh"|ppc*|powerpc*)
4327         arch="ppc"
4328     ;;
4329     s390|s390x)
4330         arch="s390"
4331     ;;
4332     sh4|sh)
4333         arch="sh4"
4334     ;;
4335     sun4*|sparc*)
4336         arch="sparc"
4337     ;;
4338     tilegx|tile-gx)
4339         arch="tilegx"
4340     ;;
4341     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4342         arch="x86"
4343     ;;
4344 esac
4345
4346 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4347 enable $arch
4348
4349 # Add processor-specific flags
4350 if enabled aarch64; then
4351
4352     case $cpu in
4353         armv*)
4354             cpuflags="-march=$cpu"
4355         ;;
4356         *)
4357             cpuflags="-mcpu=$cpu"
4358         ;;
4359     esac
4360
4361 elif enabled alpha; then
4362
4363     cpuflags="-mcpu=$cpu"
4364
4365 elif enabled arm; then
4366
4367     check_arm_arch() {
4368         check_cpp_condition stddef.h \
4369             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4370             $cpuflags
4371     }
4372
4373     probe_arm_arch() {
4374         if   check_arm_arch 4;        then echo armv4
4375         elif check_arm_arch 4T;       then echo armv4t
4376         elif check_arm_arch 5;        then echo armv5
4377         elif check_arm_arch 5E;       then echo armv5e
4378         elif check_arm_arch 5T;       then echo armv5t
4379         elif check_arm_arch 5TE;      then echo armv5te
4380         elif check_arm_arch 5TEJ;     then echo armv5te
4381         elif check_arm_arch 6;        then echo armv6
4382         elif check_arm_arch 6J;       then echo armv6j
4383         elif check_arm_arch 6K;       then echo armv6k
4384         elif check_arm_arch 6Z;       then echo armv6z
4385         elif check_arm_arch 6ZK;      then echo armv6zk
4386         elif check_arm_arch 6T2;      then echo armv6t2
4387         elif check_arm_arch 7;        then echo armv7
4388         elif check_arm_arch 7A  7_A;  then echo armv7-a
4389         elif check_arm_arch 7S;       then echo armv7-a
4390         elif check_arm_arch 7R  7_R;  then echo armv7-r
4391         elif check_arm_arch 7M  7_M;  then echo armv7-m
4392         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4393         elif check_arm_arch 8A  8_A;  then echo armv8-a
4394         fi
4395     }
4396
4397     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4398
4399     case $cpu in
4400         armv*)
4401             cpuflags="-march=$cpu"
4402             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4403         ;;
4404         *)
4405             cpuflags="-mcpu=$cpu"
4406             case $cpu in
4407                 cortex-a*)                               subarch=armv7a  ;;
4408                 cortex-r*)                               subarch=armv7r  ;;
4409                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4410                 arm11*)                                  subarch=armv6   ;;
4411                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4412                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4413                 *)                             subarch=$(probe_arm_arch) ;;
4414             esac
4415         ;;
4416     esac
4417
4418     case "$subarch" in
4419         armv5t*)    enable fast_clz                ;;
4420         armv[6-8]*)
4421             enable fast_clz
4422             disabled fast_unaligned || enable fast_unaligned
4423             ;;
4424     esac
4425
4426 elif enabled avr32; then
4427
4428     case $cpu in
4429         ap7[02]0[0-2])
4430             subarch="avr32_ap"
4431             cpuflags="-mpart=$cpu"
4432         ;;
4433         ap)
4434             subarch="avr32_ap"
4435             cpuflags="-march=$cpu"
4436         ;;
4437         uc3[ab]*)
4438             subarch="avr32_uc"
4439             cpuflags="-mcpu=$cpu"
4440         ;;
4441         uc)
4442             subarch="avr32_uc"
4443             cpuflags="-march=$cpu"
4444         ;;
4445     esac
4446
4447 elif enabled bfin; then
4448
4449     cpuflags="-mcpu=$cpu"
4450
4451 elif enabled mips; then
4452
4453     cpuflags="-march=$cpu"
4454
4455     if [ "$cpu" != "generic" ]; then
4456         disable mips32r2
4457         disable mips32r5
4458         disable mips64r2
4459         disable mips32r6
4460         disable mips64r6
4461         disable loongson2
4462         disable loongson3
4463
4464         case $cpu in
4465             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4466                 enable mips32r2
4467                 disable msa
4468             ;;
4469             p5600|i6400|p6600)
4470                 disable mipsdsp
4471                 disable mipsdspr2
4472             ;;
4473             loongson*)
4474                 enable loongson2
4475                 enable loongson3
4476                 enable local_aligned_8 local_aligned_16 local_aligned_32
4477                 enable simd_align_16
4478                 enable fast_64bit
4479                 enable fast_clz
4480                 enable fast_cmov
4481                 enable fast_unaligned
4482                 disable aligned_stack
4483                 disable mipsfpu
4484                 disable mipsdsp
4485                 disable mipsdspr2
4486                 case $cpu in
4487                     loongson3*)
4488                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4489                     ;;
4490                     loongson2e)
4491                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4492                     ;;
4493                     loongson2f)
4494                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4495                     ;;
4496                 esac
4497             ;;
4498             *)
4499                 # Unknown CPU. Disable everything.
4500                 warn "unknown CPU. Disabling all MIPS optimizations."
4501                 disable mipsfpu
4502                 disable mipsdsp
4503                 disable mipsdspr2
4504                 disable msa
4505                 disable mmi
4506             ;;
4507         esac
4508
4509         case $cpu in
4510             24kc)
4511                 disable mipsfpu
4512                 disable mipsdsp
4513                 disable mipsdspr2
4514             ;;
4515             24kf*)
4516                 disable mipsdsp
4517                 disable mipsdspr2
4518             ;;
4519             24kec|34kc|1004kc)
4520                 disable mipsfpu
4521                 disable mipsdspr2
4522             ;;
4523             24kef*|34kf*|1004kf*)
4524                 disable mipsdspr2
4525             ;;
4526             74kc)
4527                 disable mipsfpu
4528             ;;
4529             p5600)
4530                 enable mips32r5
4531                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4532             ;;
4533             i6400)
4534                 enable mips64r6
4535                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4536             ;;
4537             p6600)
4538                 enable mips64r6
4539                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4540             ;;
4541         esac
4542     else
4543         # We do not disable anything. Is up to the user to disable the unwanted features.
4544         warn 'generic cpu selected'
4545     fi
4546
4547 elif enabled ppc; then
4548
4549     disable ldbrx
4550
4551     case $(tolower $cpu) in
4552         601|ppc601|powerpc601)
4553             cpuflags="-mcpu=601"
4554             disable altivec
4555         ;;
4556         603*|ppc603*|powerpc603*)
4557             cpuflags="-mcpu=603"
4558             disable altivec
4559         ;;
4560         604*|ppc604*|powerpc604*)
4561             cpuflags="-mcpu=604"
4562             disable altivec
4563         ;;
4564         g3|75*|ppc75*|powerpc75*)
4565             cpuflags="-mcpu=750"
4566             disable altivec
4567         ;;
4568         g4|745*|ppc745*|powerpc745*)
4569             cpuflags="-mcpu=7450"
4570             disable vsx
4571         ;;
4572         74*|ppc74*|powerpc74*)
4573             cpuflags="-mcpu=7400"
4574             disable vsx
4575         ;;
4576         g5|970|ppc970|powerpc970)
4577             cpuflags="-mcpu=970"
4578             disable vsx
4579         ;;
4580         power[3-6]*)
4581             cpuflags="-mcpu=$cpu"
4582             disable vsx
4583         ;;
4584         power[7-8]*)
4585             cpuflags="-mcpu=$cpu"
4586         ;;
4587         cell)
4588             cpuflags="-mcpu=cell"
4589             enable ldbrx
4590             disable vsx
4591         ;;
4592         e500mc)
4593             cpuflags="-mcpu=e500mc"
4594             disable altivec
4595         ;;
4596         e500v2)
4597             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4598             disable altivec
4599             disable dcbzl
4600         ;;
4601         e500)
4602             cpuflags="-mcpu=8540 -mhard-float"
4603             disable altivec
4604             disable dcbzl
4605         ;;
4606     esac
4607
4608 elif enabled sparc; then
4609
4610     case $cpu in
4611         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4612             cpuflags="-mcpu=$cpu"
4613         ;;
4614         ultrasparc*|niagara[234])
4615             cpuflags="-mcpu=$cpu"
4616         ;;
4617     esac
4618
4619 elif enabled x86; then
4620
4621     case $cpu in
4622         i[345]86|pentium)
4623             cpuflags="-march=$cpu"
4624             disable i686
4625             disable mmx
4626         ;;
4627         # targets that do NOT support nopl and conditional mov (cmov)
4628         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4629             cpuflags="-march=$cpu"
4630             disable i686
4631         ;;
4632         # targets that do support nopl and conditional mov (cmov)
4633         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4634         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4635         |amdfam10|barcelona|b[dt]ver*|znver*)
4636             cpuflags="-march=$cpu"
4637             enable i686
4638             enable fast_cmov
4639         ;;
4640         # targets that do support conditional mov but on which it's slow
4641         pentium4|pentium4m|prescott|nocona)
4642             cpuflags="-march=$cpu"
4643             enable i686
4644             disable fast_cmov
4645         ;;
4646     esac
4647
4648 fi
4649
4650 if [ "$cpu" != generic ]; then
4651     add_cflags  $cpuflags
4652     add_asflags $cpuflags
4653     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4654 fi
4655
4656 # compiler sanity check
4657 check_exec <<EOF
4658 int main(void){ return 0; }
4659 EOF
4660 if test "$?" != 0; then
4661     echo "$cc is unable to create an executable file."
4662     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4663         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4664         echo "Only do this if you know what cross compiling means."
4665     fi
4666     die "C compiler test failed."
4667 fi
4668
4669 add_cppflags -D_ISOC99_SOURCE
4670 add_cxxflags -D__STDC_CONSTANT_MACROS
4671 add_cxxflags -std=c++98
4672
4673 # some compilers silently accept -std=c11, so we also need to check that the
4674 # version macro is defined properly
4675 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4676     add_cflags -std=c11
4677 else
4678     check_cflags -std=c99
4679 fi
4680
4681 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4682 #include <stdlib.h>
4683 EOF
4684 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4685 #include <stdlib.h>
4686 EOF
4687
4688 add_host_cppflags -D_ISOC99_SOURCE
4689 check_host_cflags -std=c99
4690 check_host_cflags -Wall
4691 check_host_cflags -O3
4692
4693 check_64bit(){
4694     arch32=$1
4695     arch64=$2
4696     expr=$3
4697     check_code cc "" "int test[2*($expr) - 1]" &&
4698         subarch=$arch64 || subarch=$arch32
4699 }
4700
4701 case "$arch" in
4702     aarch64|alpha|ia64)
4703         spic=$shared
4704     ;;
4705     mips)
4706         check_64bit mips mips64 '_MIPS_SIM > 1'
4707         spic=$shared
4708     ;;
4709     parisc)
4710         check_64bit parisc parisc64 'sizeof(void *) > 4'
4711         spic=$shared
4712     ;;
4713     ppc)
4714         check_64bit ppc ppc64 'sizeof(void *) > 4'
4715         spic=$shared
4716     ;;
4717     s390)
4718         check_64bit s390 s390x 'sizeof(void *) > 4'
4719         spic=$shared
4720     ;;
4721     sparc)
4722         check_64bit sparc sparc64 'sizeof(void *) > 4'
4723         spic=$shared
4724     ;;
4725     x86)
4726         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4727         # Treat x32 as x64 for now. Note it also needs spic=$shared
4728         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4729             subarch=x86_64
4730         if test "$subarch" = "x86_64"; then
4731             spic=$shared
4732         fi
4733     ;;
4734     ppc)
4735         check_cc <<EOF && subarch="ppc64"
4736         int test[(int)sizeof(char*) - 7];
4737 EOF
4738     ;;
4739 esac
4740
4741 enable $subarch
4742 enabled spic && enable_weak pic
4743
4744 # OS specific
4745 case $target_os in
4746     aix)
4747         SHFLAGS=-shared
4748         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4749         enabled shared && add_ldflags -Wl,-brtl
4750         ;;
4751     android)
4752         disable symver
4753         enable section_data_rel_ro
4754         SLIB_INSTALL_NAME='$(SLIBNAME)'
4755         SLIB_INSTALL_LINKS=
4756         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4757         ;;
4758     haiku)
4759         prefix_default="/boot/common"
4760         network_extralibs="-lnetwork"
4761         host_libs=
4762         ;;
4763     sunos)
4764         SHFLAGS='-shared -Wl,-h,$$(@F)'
4765         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4766         network_extralibs="-lsocket -lnsl"
4767         add_cppflags -D__EXTENSIONS__
4768         # When using suncc to build, the Solaris linker will mark
4769         # an executable with each instruction set encountered by
4770         # the Solaris assembler.  As our libraries contain their own
4771         # guards for processor-specific code, instead suppress
4772         # generation of the HWCAPS ELF section on Solaris x86 only.
4773         enabled_all suncc x86 &&
4774             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4775             add_ldflags -Wl,-M,mapfile
4776         nm_default='nm -P -g'
4777         version_script='-M'
4778         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4779         ;;
4780     netbsd)
4781         disable symver
4782         oss_indev_extralibs="-lossaudio"
4783         oss_outdev_extralibs="-lossaudio"
4784         enabled gcc || check_ldflags -Wl,-zmuldefs
4785         ;;
4786     openbsd|bitrig)
4787         disable symver
4788         SHFLAGS='-shared'
4789         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4790         SLIB_INSTALL_LINKS=
4791         oss_indev_extralibs="-lossaudio"
4792         oss_outdev_extralibs="-lossaudio"
4793         ;;
4794     dragonfly)
4795         disable symver
4796         ;;
4797     freebsd)
4798         ;;
4799     bsd/os)
4800         add_extralibs -lpoll -lgnugetopt
4801         strip="strip -d"
4802         ;;
4803     darwin)
4804         enabled ppc && add_asflags -force_cpusubtype_ALL
4805         install_name_dir_default='$(SHLIBDIR)'
4806         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4807         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4808         strip="${strip} -x"
4809         add_ldflags -Wl,-dynamic,-search_paths_first
4810         SLIBSUF=".dylib"
4811         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4812         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4813         objformat="macho"
4814         enabled x86_64 && objformat="macho64"
4815         enabled_any pic shared x86_64 ||
4816             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4817         check_header dispatch/dispatch.h &&
4818             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4819         version_script='-exported_symbols_list'
4820         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4821         ;;
4822     msys*)
4823         die "Native MSYS builds are discouraged, please use the MINGW environment."
4824         ;;
4825     mingw32*|mingw64*)
4826         if test $target_os = "mingw32ce"; then
4827             disable network
4828         else
4829             target_os=mingw32
4830         fi
4831         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4832         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4833         LIBTARGET=i386
4834         if enabled x86_64; then
4835             LIBTARGET="i386:x86-64"
4836         elif enabled arm; then
4837             LIBTARGET=arm-wince
4838         fi
4839         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4840         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4841         shlibdir_default="$bindir_default"
4842         SLIBPREF=""
4843         SLIBSUF=".dll"
4844         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4845         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4846         dlltool="${cross_prefix}dlltool"
4847         if check_cmd lib.exe -list; then
4848             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4849             if enabled x86_64; then
4850                 LIBTARGET=x64
4851             fi
4852         elif check_cmd $dlltool --version; then
4853             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4854         fi
4855         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4856         SLIB_INSTALL_LINKS=
4857         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4858         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4859         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4860         objformat="win32"
4861         ranlib=:
4862         enable dos_paths
4863         check_ldflags -Wl,--nxcompat,--dynamicbase
4864         # Lets work around some stupidity in binutils.
4865         # ld will strip relocations from executables even though we need them
4866         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4867         # however ld then forgets what the entry point should be (oops) so we
4868         # have to manually (re)set it.
4869         if enabled x86_32; then
4870             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4871         elif enabled x86_64; then
4872             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4873             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4874             # Set image base >4GB for extra entropy with HEASLR
4875             add_ldexeflags -Wl,--image-base,0x140000000
4876             append SHFLAGS -Wl,--image-base,0x180000000
4877         fi
4878         ;;
4879     win32|win64)
4880         disable symver
4881         if enabled shared; then
4882             # Link to the import library instead of the normal static library
4883             # for shared libs.
4884             LD_LIB='%.lib'
4885             # Cannot build both shared and static libs with MSVC or icl.
4886             disable static
4887         fi
4888         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4889         shlibdir_default="$bindir_default"
4890         SLIBPREF=""
4891         SLIBSUF=".dll"
4892         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4893         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4894         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4895         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4896         SLIB_INSTALL_LINKS=
4897         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4898         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4899         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4900         objformat="win32"
4901         ranlib=:
4902         enable dos_paths
4903         ;;
4904     cygwin*)
4905         target_os=cygwin
4906         shlibdir_default="$bindir_default"
4907         SLIBPREF="cyg"
4908         SLIBSUF=".dll"
4909         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4910         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4911         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4912         SLIB_INSTALL_LINKS=
4913         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4914         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4915         objformat="win32"
4916         enable dos_paths
4917         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4918         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4919         ;;
4920     *-dos|freedos|opendos)
4921         network_extralibs="-lsocket"
4922         objformat="coff"
4923         enable dos_paths
4924         add_cppflags -U__STRICT_ANSI__
4925         ;;
4926     linux)
4927         enable dv1394
4928         enable section_data_rel_ro
4929         ;;
4930     irix*)
4931         target_os=irix
4932         ranlib="echo ignoring ranlib"
4933         ;;
4934     os/2*)
4935         strip="lxlite -CS"
4936         objformat="aout"
4937         add_cppflags -D_GNU_SOURCE
4938         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4939         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4940         LIBSUF="_s.a"
4941         SLIBPREF=""
4942         SLIBSUF=".dll"
4943         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4944         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4945         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4946             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4947             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4948             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4949             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4950         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4951             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4952         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4953         SLIB_INSTALL_LINKS=
4954         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4955         enable dos_paths
4956         enable_weak os2threads
4957         ;;
4958     gnu/kfreebsd)
4959         add_cppflags -D_BSD_SOURCE
4960         ;;
4961     gnu)
4962         ;;
4963     qnx)
4964         add_cppflags -D_QNX_SOURCE
4965         network_extralibs="-lsocket"
4966         ;;
4967     symbian)
4968         SLIBSUF=".dll"
4969         enable dos_paths
4970         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4971         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4972         add_ldflags -Wl,--target1-abs,--no-undefined \
4973                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4974                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4975         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4976                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4977                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4978         ;;
4979     osf1)
4980         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4981         ;;
4982     minix)
4983         ;;
4984     plan9)
4985         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4986                      -D_REENTRANT_SOURCE        \
4987                      -D_RESEARCH_SOURCE         \
4988                      -DFD_SETSIZE=96            \
4989                      -DHAVE_SOCK_OPTS
4990         add_compat strtod.o strtod=avpriv_strtod
4991         network_extralibs='-lbsd'
4992         exeobjs=compat/plan9/main.o
4993         disable ffserver
4994         cp_f='cp'
4995         ;;
4996     none)
4997         ;;
4998     *)
4999         die "Unknown OS '$target_os'."
5000         ;;
5001 esac
5002
5003 # test if creating links works
5004 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5005 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5006 mkdir "$link_dest"
5007 $ln_s "$link_dest" "$link_name"
5008 touch "$link_dest/test_file"
5009 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5010     # create link to source path
5011     [ -e src ] && rm src
5012     $ln_s "$source_path" src
5013     source_link=src
5014 else
5015     # creating directory links doesn't work
5016     # fall back to using the full source path
5017     source_link="$source_path"
5018 fi
5019 # cleanup
5020 rm -r "$link_dest"
5021 rm -r "$link_name"
5022
5023 # determine libc flavour
5024
5025 probe_libc(){
5026     pfx=$1
5027     pfx_no_=${pfx%_}
5028     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5029     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5030         eval ${pfx}libc_type=uclibc
5031         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5032     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5033         eval ${pfx}libc_type=glibc
5034         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5035     # MinGW headers can be installed on Cygwin, so check for newlib first.
5036     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5037         eval ${pfx}libc_type=newlib
5038         add_${pfx}cppflags -U__STRICT_ANSI__
5039     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5040     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5041         eval ${pfx}libc_type=mingw64
5042         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5043             add_compat msvcrt/snprintf.o
5044             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5045         fi
5046         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5047         eval test \$${pfx_no_}cc_type = "gcc" &&
5048             add_${pfx}cppflags -D__printf__=__gnu_printf__
5049     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5050          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5051         eval ${pfx}libc_type=mingw32
5052         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5053             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5054             die "ERROR: MinGW32 runtime version must be >= 3.15."
5055         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5056         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5057             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5058         eval test \$${pfx_no_}cc_type = "gcc" &&
5059             add_${pfx}cppflags -D__printf__=__gnu_printf__
5060     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5061         eval ${pfx}libc_type=msvcrt
5062         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5063             if [ "$pfx" = host_ ]; then
5064                 add_host_cppflags -Dsnprintf=_snprintf
5065             else
5066                 add_compat strtod.o strtod=avpriv_strtod
5067                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5068                                              _snprintf=avpriv_snprintf  \
5069                                              vsnprintf=avpriv_vsnprintf
5070             fi
5071         fi
5072         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5073         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5074         # 0x601 by default unless something else is set by the user.
5075         # This can easily lead to us detecting functions only present
5076         # in such new versions and producing binaries requiring windows 7.0.
5077         # Therefore explicitly set the default to XP unless the user has
5078         # set something else on the command line.
5079         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5080         # family. For these cases, configure is free to use any functions
5081         # found in the SDK headers by default. (Alternatively, we could force
5082         # _WIN32_WINNT to 0x0602 in that case.)
5083         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5084             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5085 #ifdef WINAPI_FAMILY
5086 #include <winapifamily.h>
5087 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5088 #error not desktop
5089 #endif
5090 #endif
5091 EOF
5092         if [ "$pfx" = "" ]; then
5093             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5094             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5095         fi
5096     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5097         eval ${pfx}libc_type=klibc
5098     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5099         eval ${pfx}libc_type=bionic
5100     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5101         eval ${pfx}libc_type=solaris
5102         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5103     fi
5104     check_${pfx}cc <<EOF
5105 #include <time.h>
5106 void *v = localtime_r;
5107 EOF
5108 test "$?" != 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
5109 #include <time.h>
5110 void *v = localtime_r;
5111 EOF
5112
5113 }
5114
5115 probe_libc
5116 test -n "$libc_type" && enable libc_$libc_type
5117 probe_libc host_
5118 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5119
5120 case $libc_type in
5121     bionic)
5122         add_compat strtod.o strtod=avpriv_strtod
5123         ;;
5124 esac
5125
5126 # hacks for compiler/libc/os combinations
5127
5128 if enabled_all tms470 libc_glibc; then
5129     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5130     add_cppflags -D__USER_LABEL_PREFIX__=
5131     add_cppflags -D__builtin_memset=memset
5132     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5133     add_cflags   -pds=48    # incompatible redefinition of macro
5134 fi
5135
5136 if enabled_all ccc libc_glibc; then
5137     add_ldflags -Wl,-z,now  # calls to libots crash without this
5138 fi
5139
5140 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5141     add_cppflags '-I\$(SRC_PATH)/compat/float'
5142
5143 esc(){
5144     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5145 }
5146
5147 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5148
5149 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5150
5151 set_default libdir
5152 : ${shlibdir_default:="$libdir"}
5153 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5154
5155 set_default $PATHS_LIST
5156 set_default nm
5157
5158 # we need to build at least one lib type
5159 if ! enabled_any static shared; then
5160     cat <<EOF
5161 At least one library type must be built.
5162 Specify --enable-static to build the static libraries or --enable-shared to
5163 build the shared libraries as well. To only build the shared libraries specify
5164 --disable-static in addition to --enable-shared.
5165 EOF
5166     exit 1
5167 fi
5168
5169 die_license_disabled() {
5170     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
5171 }
5172
5173 die_license_disabled_gpl() {
5174     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
5175 }
5176
5177 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5178 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5179
5180 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
5181 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
5182
5183 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5184
5185 disabled optimizations || check_cflags -fomit-frame-pointer
5186
5187 enable_weak_pic() {
5188     disabled pic && return
5189     enable pic
5190     add_cppflags -DPIC
5191     case "$target_os" in
5192     mingw*|cygwin*)
5193         ;;
5194     *)
5195         add_cflags -fPIC
5196         ;;
5197     esac
5198     add_asflags  -fPIC
5199 }
5200
5201 enabled pic && enable_weak_pic
5202
5203 check_cc <<EOF || die "Symbol mangling check failed."
5204 int ff_extern;
5205 EOF
5206 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5207 extern_prefix=${sym%%ff_extern*}
5208
5209 check_cc <<EOF && enable_weak inline_asm
5210 void foo(void) { __asm__ volatile ("" ::); }
5211 EOF
5212
5213 _restrict=
5214 for restrict_keyword in restrict __restrict__ __restrict; do
5215     check_cc <<EOF && _restrict=$restrict_keyword && break
5216 void foo(char * $restrict_keyword p);
5217 EOF
5218 done
5219
5220 check_cc <<EOF && enable pragma_deprecated
5221 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5222 EOF
5223
5224 check_cc <<EOF && enable attribute_packed
5225 struct { int x; } __attribute__((packed)) x;
5226 EOF
5227
5228 check_cc <<EOF && enable attribute_may_alias
5229 union { int x; } __attribute__((may_alias)) x;
5230 EOF
5231
5232 check_cc <<EOF || die "endian test failed"
5233 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5234 EOF
5235 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5236
5237 if ! enabled ppc64 || enabled bigendian; then
5238     disable vsx
5239 fi
5240
5241 check_gas() {
5242     log "check_gas using '$as' as AS"
5243     # :vararg is used on aarch64, arm and ppc altivec
5244     check_as <<EOF || return 1
5245 .macro m n, y:vararg=0
5246 \n: .int \y
5247 .endm
5248 m x
5249 EOF
5250     # .altmacro is only used in arm asm
5251     ! enabled arm || check_as <<EOF || return 1
5252 .altmacro
5253 EOF
5254     enable gnu_as
5255     return 0
5256 }
5257
5258 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5259     nogas=:
5260     enabled_any arm aarch64 && nogas=die
5261     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5262     as_noop=-v
5263
5264     case $as_type in
5265         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5266         gcc)  gaspp_as_type=gas ;;
5267         *)    gaspp_as_type=$as_type ;;
5268     esac
5269
5270     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5271
5272     test "${as#*gas-preprocessor.pl}" != "$as" ||
5273     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5274         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5275
5276     if ! check_gas ; then
5277         as=${gas:=$as}
5278         check_gas || \
5279             $nogas "GNU assembler not found, install/update gas-preprocessor"
5280     fi
5281
5282     check_as <<EOF && enable as_func
5283 .func test
5284 .endfunc
5285 EOF
5286 fi
5287
5288 check_inline_asm inline_asm_labels '"1:\n"'
5289
5290 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5291
5292 if enabled aarch64; then
5293     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5294     # internal assembler in clang 3.3 does not support this instruction
5295     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5296     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5297
5298     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5299
5300 elif enabled alpha; then
5301
5302     check_cflags -mieee
5303
5304 elif enabled arm; then
5305
5306     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5307
5308     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5309 float func(float a, float b){ return a+b; }
5310 EOF
5311
5312     enabled thumb && check_cflags -mthumb || check_cflags -marm
5313
5314     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5315         enable vfp_args
5316     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5317         enable vfp_args
5318     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5319         case "${cross_prefix:-$cc}" in
5320             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5321             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5322 __asm__ (".eabi_attribute 28, 1");
5323 int main(void) { return 0; }
5324 EOF
5325         esac
5326         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5327     fi
5328
5329     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5330     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5331     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5332     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5333     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5334     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5335     enabled setend  && check_insn setend  'setend be'
5336
5337     [ $target_os = linux ] || [ $target_os = android ] ||
5338         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5339             $ARCH_EXT_LIST_ARM
5340
5341     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5342
5343     check_as <<EOF && enable as_dn_directive
5344 ra .dn d0.i16
5345 .unreq ra
5346 EOF
5347     check_as <<EOF && enable as_fpu_directive
5348 .fpu neon
5349 EOF
5350
5351     # llvm's integrated assembler supports .object_arch from llvm 3.5
5352     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5353 .object_arch armv4
5354 EOF
5355
5356     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5357
5358 elif enabled mips; then
5359
5360     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5361     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5362     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5363
5364     # Enable minimum ISA based on selected options
5365     if enabled mips64; then
5366         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5367         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5368         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5369     else
5370         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5371         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5372         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5373         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5374     fi
5375
5376     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5377     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5378     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5379     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5380     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5381
5382 elif enabled parisc; then
5383
5384     if enabled gcc; then
5385         case $($cc -dumpversion) in
5386             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5387         esac
5388     fi
5389
5390 elif enabled ppc; then
5391
5392     enable local_aligned_8 local_aligned_16 local_aligned_32
5393
5394     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5395     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5396     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5397     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5398
5399     # AltiVec flags: The FSF version of GCC differs from the Apple version
5400     if enabled altivec; then
5401         check_cflags -maltivec -mabi=altivec &&
5402         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5403         check_cflags -faltivec
5404
5405         # check if our compiler supports Motorola AltiVec C API
5406         check_cc <<EOF || disable altivec
5407 $inc_altivec_h
5408 int main(void) {
5409     vector signed int v1 = (vector signed int) { 0 };
5410     vector signed int v2 = (vector signed int) { 1 };
5411     v1 = vec_add(v1, v2);
5412     return 0;
5413 }
5414 EOF
5415
5416         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5417     fi
5418
5419     if enabled vsx; then
5420         check_cflags -mvsx &&
5421         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5422     fi
5423
5424     if enabled power8; then
5425         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5426     fi
5427
5428 elif enabled x86; then
5429
5430     check_builtin rdtsc    intrin.h   "__rdtsc()"
5431     check_builtin mm_empty mmintrin.h "_mm_empty()"
5432
5433     enable local_aligned_8 local_aligned_16 local_aligned_32
5434
5435     # check whether EBP is available on x86
5436     # As 'i' is stored on the stack, this program will crash
5437     # if the base pointer is used to access it because the
5438     # base pointer is cleared in the inline assembly code.
5439     check_exec_crash <<EOF && enable ebp_available
5440 volatile int i=0;
5441 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5442 return i;
5443 EOF
5444
5445     # check whether EBX is available on x86
5446     check_inline_asm ebx_available '""::"b"(0)' &&
5447         check_inline_asm ebx_available '"":::"%ebx"'
5448
5449     # check whether xmm clobbers are supported
5450     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5451
5452     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5453         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5454
5455     # check whether binutils is new enough to compile SSSE3/MMXEXT
5456     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5457     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5458
5459     if ! disabled_any asm mmx yasm; then
5460         if check_cmd $yasmexe --version; then
5461             enabled x86_64 && yasm_extra="-m amd64"
5462             yasm_debug="-g dwarf2"
5463         elif check_cmd nasm -v; then
5464             yasmexe=nasm
5465             yasm_debug="-g -F dwarf"
5466             if enabled x86_64; then
5467                 case "$objformat" in
5468                     elf)   objformat=elf64 ;;
5469                     win32) objformat=win64 ;;
5470                 esac
5471             fi
5472         fi
5473
5474         YASMFLAGS="-f $objformat $yasm_extra"
5475         enabled pic               && append YASMFLAGS "-DPIC"
5476         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5477         case "$objformat" in
5478             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5479         esac
5480
5481         check_yasm "movbe ecx, [5]" && enable yasm ||
5482             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5483         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5484         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5485         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5486         check_yasm "CPU amdnop" || disable cpunop
5487     fi
5488
5489     case "$cpu" in
5490         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5491             disable fast_clz
5492         ;;
5493     esac
5494
5495 fi
5496
5497 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5498
5499 check_ldflags -Wl,--as-needed
5500 check_ldflags -Wl,-z,noexecstack
5501
5502 if check_func dlopen && check_func dlsym; then
5503     ldl=
5504 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5505     ldl=-ldl
5506 fi
5507
5508 avisynth_demuxer_extralibs='$ldl'
5509 cuda_extralibs='$ldl'
5510 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5511 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5512 frei0r_filter_extralibs='$ldl'
5513 frei0r_src_filter_extralibs='$ldl'
5514 ladspa_filter_extralibs='$ldl'
5515 nvenc_extralibs='$ldl'
5516 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5517 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5518
5519 if ! disabled network; then
5520     check_func getaddrinfo $network_extralibs
5521     check_func inet_aton $network_extralibs
5522
5523     check_type netdb.h "struct addrinfo"
5524     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5525     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5526     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5527     check_type poll.h "struct pollfd"
5528     check_type netinet/sctp.h "struct sctp_event_subscribe"
5529     check_struct "sys/socket.h" "struct msghdr" msg_flags
5530     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5531     check_type netinet/in.h "struct sockaddr_in6"
5532     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5533     check_type "sys/types.h sys/socket.h" socklen_t
5534
5535     # Prefer arpa/inet.h over winsock2
5536     if check_header arpa/inet.h ; then
5537         check_func closesocket
5538     elif check_header winsock2.h ; then
5539         check_func_headers winsock2.h closesocket -lws2 &&
5540             network_extralibs="-lws2" ||
5541         { check_func_headers winsock2.h closesocket -lws2_32 &&
5542             network_extralibs="-lws2_32"; } || disable winsock2_h network
5543         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5544
5545         check_type ws2tcpip.h socklen_t
5546         check_type ws2tcpip.h "struct addrinfo"
5547         check_type ws2tcpip.h "struct group_source_req"
5548         check_type ws2tcpip.h "struct ip_mreq_source"
5549         check_type ws2tcpip.h "struct ipv6_mreq"
5550         check_type winsock2.h "struct pollfd"
5551         check_struct winsock2.h "struct sockaddr" sa_len
5552         check_type ws2tcpip.h "struct sockaddr_in6"
5553         check_type ws2tcpip.h "struct sockaddr_storage"
5554     else
5555         disable network
5556     fi
5557 fi
5558
5559 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5560 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5561 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5562 check_builtin sarestart signal.h "SA_RESTART"
5563 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5564 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5565 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5566 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5567 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5568
5569 case "$custom_allocator" in
5570     jemalloc)
5571         # jemalloc by default does not use a prefix
5572         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5573     ;;
5574     tcmalloc)
5575         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5576         malloc_prefix=tc_
5577     ;;
5578 esac
5579
5580 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5581 check_func  ${malloc_prefix}memalign            && enable memalign
5582 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5583
5584 check_func  access
5585 check_func_headers stdlib.h arc4random
5586 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5587 check_func  fcntl
5588 check_func  fork
5589 check_func  gethrtime
5590 check_func  getopt
5591 check_func  getrusage
5592 check_func  gettimeofday
5593 check_func  isatty
5594 check_func  mach_absolute_time
5595 check_func  mkstemp
5596 check_func  mmap
5597 check_func  mprotect
5598 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5599 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5600 check_func  sched_getaffinity
5601 check_func  setrlimit
5602 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5603 check_func  strerror_r
5604 check_func  sysconf
5605 check_func  sysctl
5606 check_func  usleep
5607
5608 check_func_headers conio.h kbhit
5609 check_func_headers io.h setmode
5610 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5611 check_func_headers stdlib.h getenv
5612 check_func_headers sys/stat.h lstat
5613
5614 check_func_headers windows.h CoTaskMemFree -lole32
5615 check_func_headers windows.h GetProcessAffinityMask
5616 check_func_headers windows.h GetProcessTimes
5617 check_func_headers windows.h GetSystemTimeAsFileTime
5618 check_func_headers windows.h LoadLibrary
5619 check_func_headers windows.h MapViewOfFile
5620 check_func_headers windows.h PeekNamedPipe
5621 check_func_headers windows.h SetConsoleTextAttribute
5622 check_func_headers windows.h SetConsoleCtrlHandler
5623 check_func_headers windows.h Sleep
5624 check_func_headers windows.h VirtualAlloc
5625 check_struct windows.h "CONDITION_VARIABLE" Ptr
5626 check_func_headers glob.h glob
5627 enabled xlib &&
5628     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5629
5630 check_header AudioToolbox/AudioToolbox.h
5631 check_header direct.h
5632 check_header dirent.h
5633 check_header dlfcn.h
5634 check_header d3d11.h
5635 check_header dxva.h
5636 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5637 check_header io.h
5638 check_header libcrystalhd/libcrystalhd_if.h
5639 check_header mach/mach_time.h
5640 check_header malloc.h
5641 check_header net/udplite.h
5642 check_header poll.h
5643 check_header sys/mman.h
5644 check_header sys/param.h
5645 check_header sys/resource.h
5646 check_header sys/select.h
5647 check_header sys/time.h
5648 check_header sys/un.h
5649 check_header termios.h
5650 check_header unistd.h
5651 check_header valgrind/valgrind.h
5652 check_header vdpau/vdpau.h
5653 check_header vdpau/vdpau_x11.h
5654 check_header VideoDecodeAcceleration/VDADecoder.h
5655 check_header VideoToolbox/VideoToolbox.h
5656 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5657 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5658 check_header windows.h
5659 check_header X11/extensions/XvMClib.h
5660 check_header asm/types.h
5661
5662 # it seems there are versions of clang in some distros that try to use the
5663 # gcc headers, which explodes for stdatomic
5664 # so we also check that atomics actually work here
5665 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5666
5667 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5668 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5669 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5670 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5671
5672 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5673
5674 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5675 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5676 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5677 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5678 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5679
5680 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5681 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5682 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5683 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5684 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5685 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5686 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5687 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5688
5689 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5690
5691 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5692
5693 if ! disabled w32threads && ! enabled pthreads; then
5694     check_func_headers "windows.h process.h" _beginthreadex &&
5695         enable w32threads || disable w32threads
5696     if ! enabled w32threads && enabled winrt; then
5697         check_func_headers "windows.h" CreateThread &&
5698             enable w32threads || disable w32threads
5699     fi
5700 fi
5701
5702 # check for some common methods of building with pthread support
5703 # do this before the optional library checks as some of them require pthreads
5704 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5705     enable pthreads
5706     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5707         add_cflags -pthread
5708         add_extralibs -pthread
5709     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5710         add_cflags -pthreads
5711         add_extralibs -pthreads
5712     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5713         add_cflags -ldl -pthread
5714         add_extralibs -ldl -pthread
5715     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5716         add_extralibs -lpthreadGC2
5717     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5718         :
5719     elif ! check_func pthread_join && ! check_func pthread_create; then
5720         disable pthreads
5721     fi
5722     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5723 fi
5724
5725
5726 if enabled pthreads; then
5727   check_func pthread_cancel
5728 fi
5729
5730 enabled pthreads &&
5731     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5732
5733 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5734 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5735 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5736
5737 check_lib math.h sin -lm && LIBM="-lm"
5738 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5739
5740 atan2f_args=2
5741 copysign_args=2
5742 hypot_args=2
5743 ldexpf_args=2
5744 powf_args=2
5745
5746 for func in $MATH_FUNCS; do
5747     eval check_mathfunc $func \${${func}_args:-1}
5748 done
5749
5750 for func in $COMPLEX_FUNCS; do
5751     eval check_complexfunc $func \${${func}_args:-1}
5752 done
5753
5754 # these are off by default, so fail if requested and not available
5755 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5756 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5757                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5758 enabled cuda              && check_header cuda.h # this is not a dependency
5759 enabled cuvid             && { enabled cuda ||
5760                                die "ERROR: CUVID requires CUDA"; }
5761 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5762 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5763 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5764 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5765                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5766 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5767 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5768 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5769 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5770                                check_lib2 "dlfcn.h" dlopen -ldl; }
5771 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5772 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5773 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5774 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5775 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5776 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5777                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5778                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5779 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5780 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5781                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5782                                  warn "using libfdk without pkg-config"; } }
5783 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"
5784 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5785 enabled fontconfig        && enable libfontconfig
5786 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5787 enabled libfreetype       && require_libfreetype
5788 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5789 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5790 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5791                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5792                                done || die "ERROR: libgsm not found"; }
5793 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5794 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5795 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5796 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5797 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5798 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5799 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5800 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5801 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5802 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5803                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5804                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5805                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5806 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5807 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5808                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5809                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5810                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5811                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5812                                die "ERROR: libopenjpeg not found"; }
5813 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5814 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5815 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5816 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5817 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5818 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5819 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5820 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5821                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5822 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5823 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5824 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5825 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5826 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5827 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5828 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5829                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5830                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5831 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5832 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5833 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5834 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5835
5836 enabled libvpx            && {
5837     enabled libvpx_vp8_decoder && {
5838         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5839             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5840                 die "ERROR: libvpx decoder version must be >=0.9.1";
5841     }
5842     enabled libvpx_vp8_encoder && {
5843         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5844             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5845                 die "ERROR: libvpx encoder version must be >=0.9.7";
5846     }
5847     enabled libvpx_vp9_decoder && {
5848         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5849             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5850                 disable libvpx_vp9_decoder;
5851     }
5852     enabled libvpx_vp9_encoder && {
5853         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5854             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5855                 disable libvpx_vp9_encoder;
5856     }
5857     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5858         die "libvpx enabled but no supported decoders found"
5859     fi
5860 }
5861
5862 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5863 enabled libwebp           && {
5864     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5865     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5866 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5867                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5868                                  warn "using libx264 without pkg-config"; } } &&
5869                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5870                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5871                              { check_cpp_condition x264.h "X264_MPEG2" &&
5872                                enable libx262; }
5873 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5874                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5875                                die "ERROR: libx265 version must be >= 68."; }
5876 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5877 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5878 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5879 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5880 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5881                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5882                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5883 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5884 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5885                                 { ! enabled cross_compile && {
5886                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5887                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5888                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5889                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5890                                die "ERROR: mmal not found"; }
5891 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5892
5893 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5894 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5895                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5896                                die "ERROR: openal not found"; } &&
5897                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5898                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5899 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5900                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5901                                die "ERROR: opencl not found"; } &&
5902                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5903                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5904                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5905 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5906                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5907                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5908                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5909                                die "ERROR: opengl not found."
5910                              }
5911 enabled omx_rpi && enable omx
5912 enabled omx               && { check_header OMX_Core.h ||
5913                                 { ! enabled cross_compile && enabled omx_rpi && {
5914                                     add_cflags -isystem/opt/vc/include/IL ; }
5915                                 check_header OMX_Core.h ; } ||
5916                                die "ERROR: OpenMAX IL headers not found"; }
5917 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5918                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5919                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5920                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5921                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5922                                die "ERROR: openssl not found"; }
5923 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5924
5925 # libdc1394 check
5926 if enabled libdc1394; then
5927     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5928         enable libdc1394_2; } ||
5929     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5930         enable libdc1394_1; } ||
5931     die "ERROR: No version of libdc1394 found "
5932 fi
5933
5934 if enabled gcrypt; then
5935     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5936     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5937         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5938         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5939         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5940             die "ERROR: gcrypt not found"
5941         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5942     else
5943         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5944     fi
5945 fi
5946
5947 disabled sdl && disable sdl2
5948 if ! disabled sdl2; then
5949     SDL2_CONFIG="${cross_prefix}sdl2-config"
5950     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5951         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5952         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5953         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5954     else
5955       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5956         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5957         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5958         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5959         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5960         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5961       fi
5962     fi
5963     if test $target_os = "mingw32"; then
5964         sdl2_libs="$sdl2_libs -mconsole"
5965     fi
5966 fi
5967 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5968
5969 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5970     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5971     enable securetransport; }
5972
5973 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5974                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5975
5976 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5977 enabled makeinfo \
5978     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5979     && enable makeinfo_html || disable makeinfo_html
5980 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5981 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5982 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5983 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5984
5985 check_header linux/fb.h
5986 check_header linux/videodev.h
5987 check_header linux/videodev2.h
5988 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5989
5990 check_header sys/videoio.h
5991 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5992
5993 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5994 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5995 # w32api 3.12 had it defined wrong
5996 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5997
5998 check_type "dshow.h" IBaseFilter
5999
6000 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6001 { check_header dev/bktr/ioctl_meteor.h &&
6002   check_header dev/bktr/ioctl_bt848.h; } ||
6003 { check_header machine/ioctl_meteor.h &&
6004   check_header machine/ioctl_bt848.h; } ||
6005 { check_header dev/video/meteor/ioctl_meteor.h &&
6006   check_header dev/video/bktr/ioctl_bt848.h; } ||
6007 check_header dev/ic/bt8xx.h
6008
6009 check_header sndio.h
6010 if check_struct sys/soundcard.h audio_buf_info bytes; then
6011     enable_safe sys/soundcard.h
6012 else
6013     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6014     #include <sys/soundcard.h>
6015     audio_buf_info abc;
6016 EOF
6017 fi
6018 check_header soundcard.h
6019
6020 enabled_any alsa_indev alsa_outdev &&
6021     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
6022
6023 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
6024     check_func jack_port_get_latency_range -ljack
6025
6026 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
6027
6028 if enabled libcdio; then
6029     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6030     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6031     die "ERROR: No usable libcdio/cdparanoia found"
6032 fi
6033
6034 enabled xlib &&
6035     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
6036
6037 if ! disabled libxcb; then
6038     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6039         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6040     } && enable libxcb
6041
6042 if enabled libxcb; then
6043     disabled libxcb_shm || {
6044         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6045             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6046         } && check_header sys/shm.h && enable libxcb_shm; }
6047
6048     disabled libxcb_xfixes || {
6049         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6050             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6051         } && enable libxcb_xfixes; }
6052
6053     disabled libxcb_shape || {
6054         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6055             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6056         } && enable libxcb_shape; }
6057
6058     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6059     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6060 fi
6061 fi
6062
6063 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6064
6065 enabled dxva2api_h &&
6066     check_cc <<EOF && enable dxva2api_cobj
6067 #define _WIN32_WINNT 0x0600
6068 #define COBJMACROS
6069 #include <windows.h>
6070 #include <d3d9.h>
6071 #include <dxva2api.h>
6072 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6073 EOF
6074
6075 enabled vaapi &&
6076     check_lib va/va.h vaInitialize -lva ||
6077     disable vaapi
6078
6079 enabled vaapi &&
6080     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6081     disable vaapi
6082
6083 if enabled vaapi ; then
6084     enabled xlib &&
6085     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6086     enable vaapi_x11
6087
6088     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6089     enable vaapi_drm
6090 fi
6091
6092 enabled vdpau &&
6093     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6094     disable vdpau
6095
6096 enabled vdpau && enabled xlib &&
6097     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6098     enable vdpau_x11
6099
6100 if enabled x86; then
6101     case $target_os in
6102         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6103             ;;
6104         *)
6105             disable cuda cuvid nvenc
6106             ;;
6107     esac
6108 else
6109     disable cuda cuvid nvenc
6110 fi
6111
6112 enabled nvenc &&
6113     check_cc -I$source_path <<EOF || disable nvenc
6114 #include "compat/nvenc/nvEncodeAPI.h"
6115 NV_ENCODE_API_FUNCTION_LIST flist;
6116 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6117 int main(void) { return 0; }
6118 EOF
6119
6120 # Funny iconv installations are not unusual, so check it after all flags have been set
6121 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6122
6123 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6124
6125 # add some useful compiler flags if supported
6126 check_cflags -Wdeclaration-after-statement
6127 check_cflags -Wall
6128 check_cflags -Wdisabled-optimization
6129 check_cflags -Wpointer-arith
6130 check_cflags -Wredundant-decls
6131 check_cflags -Wwrite-strings
6132 check_cflags -Wtype-limits
6133 check_cflags -Wundef
6134 check_cflags -Wmissing-prototypes
6135 check_cflags -Wno-pointer-to-int-cast
6136 check_cflags -Wstrict-prototypes
6137 check_cflags -Wempty-body
6138 enabled extra_warnings && check_cflags -Winline
6139 enabled extra_warnings && check_cflags -Wcast-qual
6140
6141 check_disable_warning(){
6142     warning_flag=-W${1#-Wno-}
6143     test_cflags $warning_flag && add_cflags $1
6144 }
6145
6146 check_disable_warning -Wno-parentheses
6147 check_disable_warning -Wno-switch
6148 check_disable_warning -Wno-format-zero-length
6149 check_disable_warning -Wno-pointer-sign
6150 check_disable_warning -Wno-unused-const-variable
6151
6152 # add some linker flags
6153 check_ldflags -Wl,--warn-common
6154 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6155 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6156 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6157 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6158
6159 # add some strip flags
6160 # -wN '..@*' is more selective than -x, but not available everywhere.
6161 check_stripflags -wN \'..@*\' || check_stripflags -x
6162
6163 enabled neon_clobber_test &&
6164     check_ldflags -Wl,--wrap,avcodec_open2              \
6165                   -Wl,--wrap,avcodec_decode_audio4      \
6166                   -Wl,--wrap,avcodec_decode_video2      \
6167                   -Wl,--wrap,avcodec_decode_subtitle2   \
6168                   -Wl,--wrap,avcodec_encode_audio2      \
6169                   -Wl,--wrap,avcodec_encode_video2      \
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,avcodec_encode_subtitle    \
6175                   -Wl,--wrap,swr_convert                \
6176                   -Wl,--wrap,avresample_convert ||
6177     disable neon_clobber_test
6178
6179 enabled xmm_clobber_test &&
6180     check_ldflags -Wl,--wrap,avcodec_open2              \
6181                   -Wl,--wrap,avcodec_decode_audio4      \
6182                   -Wl,--wrap,avcodec_decode_video2      \
6183                   -Wl,--wrap,avcodec_decode_subtitle2   \
6184                   -Wl,--wrap,avcodec_encode_audio2      \
6185                   -Wl,--wrap,avcodec_encode_video2      \
6186                   -Wl,--wrap,avcodec_encode_subtitle    \
6187                   -Wl,--wrap,avcodec_send_packet        \
6188                   -Wl,--wrap,avcodec_receive_frame      \
6189                   -Wl,--wrap,avcodec_send_frame         \
6190                   -Wl,--wrap,avcodec_receive_packet     \
6191                   -Wl,--wrap,swr_convert                \
6192                   -Wl,--wrap,avresample_convert         \
6193                   -Wl,--wrap,sws_scale ||
6194     disable xmm_clobber_test
6195
6196 check_ld "cc" <<EOF && enable proper_dce
6197 extern const int array[512];
6198 static inline int func(void) { return array[0]; }
6199 int main(void) { return 0; }
6200 EOF
6201
6202 if enabled proper_dce; then
6203     echo "X { local: *; };" > $TMPV
6204     if test_ldflags -Wl,${version_script},$TMPV; then
6205         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6206         check_cc <<EOF && enable symver_asm_label
6207 void ff_foo(void) __asm__ ("av_foo@VERSION");
6208 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6209 EOF
6210         check_cc <<EOF && enable symver_gnu_asm
6211 __asm__(".symver ff_foo,av_foo@VERSION");
6212 void ff_foo(void) {}
6213 EOF
6214     fi
6215 fi
6216
6217 if [ -z "$optflags" ]; then
6218     if enabled small; then
6219         optflags=$cflags_size
6220     elif enabled optimizations; then
6221         optflags=$cflags_speed
6222     else
6223         optflags=$cflags_noopt
6224     fi
6225 fi
6226
6227 check_optflags(){
6228     check_cflags "$@"
6229     enabled lto && check_ldflags "$@"
6230 }
6231
6232
6233 if enabled lto; then
6234     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6235     check_cflags  -flto
6236     check_ldflags -flto $cpuflags
6237     disable inline_asm_direct_symbol_refs
6238 fi
6239
6240 check_optflags $optflags
6241 check_optflags -fno-math-errno
6242 check_optflags -fno-signed-zeros
6243
6244 enabled ftrapv && check_cflags -ftrapv
6245
6246 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6247 int x;
6248 EOF
6249
6250
6251 if enabled icc; then
6252     # Just warnings, no remarks
6253     check_cflags -w1
6254     # -wd: Disable following warnings
6255     # 144, 167, 556: -Wno-pointer-sign
6256     # 188: enumerated type mixed with another type
6257     # 1292: attribute "foo" ignored
6258     # 1419: external declaration in primary source file
6259     # 10006: ignoring unknown option -fno-signed-zeros
6260     # 10148: ignoring unknown option -Wno-parentheses
6261     # 10156: ignoring option '-W'; no argument required
6262     # 13200: No EMMS instruction before call to function
6263     # 13203: No EMMS instruction before return from function
6264     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6265     # 11030: Warning unknown option --as-needed
6266     # 10156: ignoring option '-export'; no argument required
6267     check_ldflags -wd10156,11030
6268     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6269     enable ebp_available
6270     # The test above does not test linking
6271     enabled lto && disable symver_asm_label
6272     if enabled x86_32; then
6273         icc_version=$($cc -dumpversion)
6274         test ${icc_version%%.*} -ge 11 &&
6275             check_cflags -falign-stack=maintain-16-byte ||
6276             disable aligned_stack
6277     fi
6278 elif enabled ccc; then
6279     # disable some annoying warnings
6280     add_cflags -msg_disable bitnotint
6281     add_cflags -msg_disable mixfuncvoid
6282     add_cflags -msg_disable nonstandcast
6283     add_cflags -msg_disable unsupieee
6284 elif enabled gcc; then
6285     check_optflags -fno-tree-vectorize
6286     check_cflags -Werror=format-security
6287     check_cflags -Werror=implicit-function-declaration
6288     check_cflags -Werror=missing-prototypes
6289     check_cflags -Werror=return-type
6290     check_cflags -Werror=vla
6291     check_cflags -Wformat
6292     check_cflags -fdiagnostics-color=auto
6293     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6294 elif enabled llvm_gcc; then
6295     check_cflags -mllvm -stack-alignment=16
6296 elif enabled clang; then
6297     check_cflags -mllvm -stack-alignment=16
6298     check_cflags -mstack-alignment=16
6299     check_cflags -Qunused-arguments
6300     check_cflags -Werror=implicit-function-declaration
6301     check_cflags -Werror=missing-prototypes
6302     check_cflags -Werror=return-type
6303 elif enabled cparser; then
6304     add_cflags -Wno-missing-variable-declarations
6305     add_cflags -Wno-empty-statement
6306 elif enabled armcc; then
6307     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6308     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6309     # 2523: use of inline assembly is deprecated
6310     add_cflags -W${armcc_opt},--diag_suppress=2523
6311     add_cflags -W${armcc_opt},--diag_suppress=1207
6312     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6313     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6314     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6315     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6316 elif enabled tms470; then
6317     add_cflags -pds=824 -pds=837
6318     disable inline_asm
6319 elif enabled pathscale; then
6320     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6321 elif enabled_any msvc icl; then
6322     enabled x86_32 && disable aligned_stack
6323     enabled_all x86_32 debug && add_cflags -Oy-
6324     enabled debug && add_ldflags -debug
6325     enable pragma_deprecated
6326     if enabled icl; then
6327         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6328         # (correctly) on icl 13.x.
6329         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6330             add_cflags -Qansi-alias
6331         # Some inline asm is not compilable in debug
6332         if enabled debug; then
6333             disable ebp_available
6334             disable ebx_available
6335         fi
6336     fi
6337     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6338     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6339     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6340     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6341     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6342     # MSVC 2013 and newer can handle it fine.
6343     # If this declspec fails, force including stdlib.h before the restrict redefinition
6344     # happens in config.h.
6345     if [ $_restrict != restrict ]; then
6346         check_cc <<EOF || add_cflags -FIstdlib.h
6347 __declspec($_restrict) void* foo(int);
6348 EOF
6349     fi
6350     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6351     # Issue has been fixed in MSVC v19.00.24218.
6352     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6353         check_cflags -d2SSAOptimizer-
6354     # enable utf-8 source processing on VS2015 U2 and newer
6355     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6356         add_cflags -utf-8
6357 fi
6358
6359 for pfx in "" host_; do
6360     varname=${pfx%_}cc_type
6361     eval "type=\$$varname"
6362     if [ $type = "msvc" ]; then
6363         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6364 static inline int foo(int a) { return a; }
6365 EOF
6366     fi
6367 done
6368
6369 case $as_type in
6370     clang)
6371         add_asflags -Qunused-arguments
6372     ;;
6373 esac
6374
6375 case $ld_type in
6376     clang)
6377         check_ldflags -Qunused-arguments
6378     ;;
6379 esac
6380
6381 case $target_os in
6382     osf1)
6383         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6384     ;;
6385     plan9)
6386         add_cppflags -Dmain=plan9_main
6387     ;;
6388 esac
6389
6390 enable frame_thread_encoder
6391
6392 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6393
6394 check_deps $CONFIG_LIST       \
6395            $CONFIG_EXTRA      \
6396            $HAVE_LIST         \
6397            $ALL_COMPONENTS    \
6398
6399 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"
6400
6401
6402 if test $target_os = "haiku"; then
6403     disable memalign
6404     disable posix_memalign
6405 fi
6406
6407 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6408     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6409     enable dxva2_lib
6410
6411 ! enabled_any memalign posix_memalign aligned_malloc &&
6412     enabled simd_align && enable memalign_hack
6413
6414 # add_dep lib dep
6415 # -> enable ${lib}_deps_${dep}
6416 # -> add $dep to ${lib}_deps only once
6417 add_dep() {
6418     lib=$1
6419     dep=$2
6420     enabled "${lib}_deps_${dep}" && return 0
6421     enable  "${lib}_deps_${dep}"
6422     prepend "${lib}_deps" $dep
6423 }
6424
6425 # merge deps lib components
6426 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6427 merge_deps() {
6428     lib=$1
6429     shift
6430     for comp in $*; do
6431         enabled $comp || continue
6432         eval "dep=\"\$${comp}_deps\""
6433         for d in $dep; do
6434             add_dep $lib $d
6435         done
6436     done
6437 }
6438
6439 merge_deps libavfilter $FILTER_LIST
6440
6441 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6442
6443 for thread in $THREADS_LIST; do
6444     if enabled $thread; then
6445         test -n "$thread_type" &&
6446             die "ERROR: Only one thread type must be selected." ||
6447             thread_type="$thread"
6448     fi
6449 done
6450
6451 if disabled stdatomic_h; then
6452     if enabled atomics_gcc; then
6453         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6454     elif enabled atomics_win32; then
6455         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6456     elif enabled atomics_suncc; then
6457         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6458     elif enabled pthreads; then
6459         add_compat atomics/pthread/stdatomic.o
6460         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6461     else
6462         enabled threads && die "Threading is enabled, but no atomics are available"
6463         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6464     fi
6465 fi
6466
6467 # Check if requested libraries were found.
6468 for lib in $AUTODETECT_LIBS; do
6469     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6470 done
6471
6472 enabled zlib && add_cppflags -DZLIB_CONST
6473
6474 # conditional library dependencies, in linking order
6475 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6476 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6477 enabled aresample_filter    && prepend avfilter_deps "swresample"
6478 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6479 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6480 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6481 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6482 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6483 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6484 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6485 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6486 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6487 enabled pan_filter          && prepend avfilter_deps "swresample"
6488 enabled pp_filter           && prepend avfilter_deps "postproc"
6489 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6490 enabled resample_filter && prepend avfilter_deps "avresample"
6491 enabled sab_filter          && prepend avfilter_deps "swscale"
6492 enabled scale_filter    && prepend avfilter_deps "swscale"
6493 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6494 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6495 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6496 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6497 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6498 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6499 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6500 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6501 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6502
6503 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6504
6505 enabled opus_decoder    && prepend avcodec_deps "swresample"
6506
6507 expand_deps(){
6508     lib_deps=${1}_deps
6509     eval "deps=\$$lib_deps"
6510     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6511     unique $lib_deps
6512 }
6513
6514 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6515 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6516
6517 map 'expand_deps $v' $LIBRARY_LIST
6518
6519 echo "install prefix            $prefix"
6520 echo "source path               $source_path"
6521 echo "C compiler                $cc"
6522 echo "C library                 $libc_type"
6523 if test "$host_cc" != "$cc"; then
6524     echo "host C compiler           $host_cc"
6525     echo "host C library            $host_libc_type"
6526 fi
6527 echo "ARCH                      $arch ($cpu)"
6528 if test "$build_suffix" != ""; then
6529     echo "build suffix              $build_suffix"
6530 fi
6531 if test "$progs_suffix" != ""; then
6532     echo "progs suffix              $progs_suffix"
6533 fi
6534 if test "$extra_version" != ""; then
6535     echo "version string suffix     $extra_version"
6536 fi
6537 echo "big-endian                ${bigendian-no}"
6538 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6539 if enabled x86; then
6540     echo "${yasmexe}                      ${yasm-no}"
6541     echo "MMX enabled               ${mmx-no}"
6542     echo "MMXEXT enabled            ${mmxext-no}"
6543     echo "3DNow! enabled            ${amd3dnow-no}"
6544     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6545     echo "SSE enabled               ${sse-no}"
6546     echo "SSSE3 enabled             ${ssse3-no}"
6547     echo "AESNI enabled             ${aesni-no}"
6548     echo "AVX enabled               ${avx-no}"
6549     echo "XOP enabled               ${xop-no}"
6550     echo "FMA3 enabled              ${fma3-no}"
6551     echo "FMA4 enabled              ${fma4-no}"
6552     echo "i686 features enabled     ${i686-no}"
6553     echo "CMOV is fast              ${fast_cmov-no}"
6554     echo "EBX available             ${ebx_available-no}"
6555     echo "EBP available             ${ebp_available-no}"
6556 fi
6557 if enabled aarch64; then
6558     echo "NEON enabled              ${neon-no}"
6559     echo "VFP enabled               ${vfp-no}"
6560 fi
6561 if enabled arm; then
6562     echo "ARMv5TE enabled           ${armv5te-no}"
6563     echo "ARMv6 enabled             ${armv6-no}"
6564     echo "ARMv6T2 enabled           ${armv6t2-no}"
6565     echo "VFP enabled               ${vfp-no}"
6566     echo "NEON enabled              ${neon-no}"
6567     echo "THUMB enabled             ${thumb-no}"
6568 fi
6569 if enabled mips; then
6570     echo "MIPS FPU enabled          ${mipsfpu-no}"
6571     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6572     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6573     echo "MIPS MSA enabled          ${msa-no}"
6574     echo "LOONGSON MMI enabled      ${mmi-no}"
6575 fi
6576 if enabled ppc; then
6577     echo "AltiVec enabled           ${altivec-no}"
6578     echo "VSX enabled               ${vsx-no}"
6579     echo "POWER8 enabled            ${power8-no}"
6580     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6581     echo "dcbzl available           ${dcbzl-no}"
6582 fi
6583 echo "debug symbols             ${debug-no}"
6584 echo "strip symbols             ${stripping-no}"
6585 echo "optimize for size         ${small-no}"
6586 echo "optimizations             ${optimizations-no}"
6587 echo "static                    ${static-no}"
6588 echo "shared                    ${shared-no}"
6589 echo "postprocessing support    ${postproc-no}"
6590 echo "new filter support        ${avfilter-no}"
6591 echo "network support           ${network-no}"
6592 echo "threading support         ${thread_type-no}"
6593 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6594 echo "SDL2 support              ${sdl2-no}"
6595 echo "opencl enabled            ${opencl-no}"
6596 echo "JNI support               ${jni-no}"
6597 echo "texi2html enabled         ${texi2html-no}"
6598 echo "perl enabled              ${perl-no}"
6599 echo "pod2man enabled           ${pod2man-no}"
6600 echo "makeinfo enabled          ${makeinfo-no}"
6601 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6602 test -n "$random_seed" &&
6603     echo "random seed               ${random_seed}"
6604 echo
6605
6606 echo "Enabled programs:"
6607 print_enabled '' $PROGRAM_LIST | print_in_columns
6608 echo
6609
6610 echo "External libraries:"
6611 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6612 echo
6613
6614 echo "External libraries providing hardware acceleration:"
6615 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6616 echo
6617
6618 echo "Libraries:"
6619 print_enabled '' $LIBRARY_LIST | print_in_columns
6620 echo
6621
6622 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6623     echo "Enabled ${type}s:"
6624     eval list=\$$(toupper $type)_LIST
6625     print_enabled '_*' $list | print_in_columns
6626     echo
6627 done
6628
6629 license="LGPL version 2.1 or later"
6630 if enabled nonfree; then
6631     license="nonfree and unredistributable"
6632 elif enabled gplv3; then
6633     license="GPL version 3 or later"
6634 elif enabled lgplv3; then
6635     license="LGPL version 3 or later"
6636 elif enabled gpl; then
6637     license="GPL version 2 or later"
6638 fi
6639
6640 echo "License: $license"
6641
6642 echo "Creating config.mak, config.h, and doc/config.texi..."
6643
6644 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6645
6646 enabled stripping || strip="echo skipping strip"
6647
6648 config_files="$TMPH config.mak doc/config.texi"
6649
6650 cat > config.mak <<EOF
6651 # Automatically generated by configure - do not modify!
6652 ifndef FFMPEG_CONFIG_MAK
6653 FFMPEG_CONFIG_MAK=1
6654 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6655 prefix=$prefix
6656 LIBDIR=\$(DESTDIR)$libdir
6657 SHLIBDIR=\$(DESTDIR)$shlibdir
6658 INCDIR=\$(DESTDIR)$incdir
6659 BINDIR=\$(DESTDIR)$bindir
6660 DATADIR=\$(DESTDIR)$datadir
6661 DOCDIR=\$(DESTDIR)$docdir
6662 MANDIR=\$(DESTDIR)$mandir
6663 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6664 INSTALL_NAME_DIR=$install_name_dir
6665 SRC_PATH=$source_path
6666 SRC_LINK=$source_link
6667 ifndef MAIN_MAKEFILE
6668 SRC_PATH:=\$(SRC_PATH:.%=..%)
6669 endif
6670 CC_IDENT=$cc_ident
6671 ARCH=$arch
6672 INTRINSICS=$intrinsics
6673 CC=$cc
6674 CXX=$cxx
6675 AS=$as
6676 OBJCC=$objcc
6677 LD=$ld
6678 DEPCC=$dep_cc
6679 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6680 DEPAS=$as
6681 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6682 YASM=$yasmexe
6683 DEPYASM=$yasmexe
6684 AR=$ar
6685 ARFLAGS=$arflags
6686 AR_O=$ar_o
6687 RANLIB=$ranlib
6688 STRIP=$strip
6689 CP=cp -p
6690 LN_S=$ln_s
6691 CPPFLAGS=$CPPFLAGS
6692 CFLAGS=$CFLAGS
6693 CXXFLAGS=$CXXFLAGS
6694 OBJCFLAGS=$OBJCFLAGS
6695 ASFLAGS=$ASFLAGS
6696 AS_C=$AS_C
6697 AS_O=$AS_O
6698 OBJCC_C=$OBJCC_C
6699 OBJCC_E=$OBJCC_E
6700 OBJCC_O=$OBJCC_O
6701 CC_C=$CC_C
6702 CC_E=$CC_E
6703 CC_O=$CC_O
6704 CXX_C=$CXX_C
6705 CXX_O=$CXX_O
6706 LD_O=$LD_O
6707 LD_LIB=$LD_LIB
6708 LD_PATH=$LD_PATH
6709 DLLTOOL=$dlltool
6710 WINDRES=$windres
6711 DEPWINDRES=$dep_cc
6712 DOXYGEN=$doxygen
6713 LDFLAGS=$LDFLAGS
6714 LDEXEFLAGS=$LDEXEFLAGS
6715 LDLIBFLAGS=$LDLIBFLAGS
6716 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6717 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6718 YASMFLAGS=$YASMFLAGS
6719 BUILDSUF=$build_suffix
6720 PROGSSUF=$progs_suffix
6721 FULLNAME=$FULLNAME
6722 LIBPREF=$LIBPREF
6723 LIBSUF=$LIBSUF
6724 LIBNAME=$LIBNAME
6725 SLIBPREF=$SLIBPREF
6726 SLIBSUF=$SLIBSUF
6727 EXESUF=$EXESUF
6728 EXTRA_VERSION=$extra_version
6729 CCDEP=$CCDEP
6730 CXXDEP=$CXXDEP
6731 CCDEP_FLAGS=$CCDEP_FLAGS
6732 ASDEP=$ASDEP
6733 ASDEP_FLAGS=$ASDEP_FLAGS
6734 CC_DEPFLAGS=$CC_DEPFLAGS
6735 AS_DEPFLAGS=$AS_DEPFLAGS
6736 HOSTCC=$host_cc
6737 HOSTLD=$host_ld
6738 HOSTCFLAGS=$host_cflags
6739 HOSTCPPFLAGS=$host_cppflags
6740 HOSTEXESUF=$HOSTEXESUF
6741 HOSTLDFLAGS=$host_ldflags
6742 HOSTLIBS=$host_libs
6743 DEPHOSTCC=$host_cc
6744 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6745 HOSTCCDEP=$HOSTCCDEP
6746 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6747 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6748 HOSTCC_C=$HOSTCC_C
6749 HOSTCC_O=$HOSTCC_O
6750 HOSTLD_O=$HOSTLD_O
6751 TARGET_EXEC=$target_exec $target_exec_args
6752 TARGET_PATH=$target_path
6753 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6754 CFLAGS-ffplay=${sdl2_cflags}
6755 ZLIB=$($ldflags_filter -lz)
6756 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6757 EXTRALIBS=$extralibs
6758 COMPAT_OBJS=$compat_objs
6759 EXEOBJS=$exeobjs
6760 INSTALL=$install
6761 LIBTARGET=${LIBTARGET}
6762 SLIBNAME=${SLIBNAME}
6763 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6764 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6765 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6766 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6767 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6768 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6769 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6770 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6771 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6772 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6773 NOREDZONE_FLAGS=$noredzone_flags
6774 EOF
6775
6776 get_version(){
6777     lcname=lib${1}
6778     name=$(toupper $lcname)
6779     file=$source_path/$lcname/version.h
6780     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6781     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6782     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6783     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6784     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6785     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6786 }
6787
6788 map 'get_version $v' $LIBRARY_LIST
6789
6790 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6791
6792 print_program_libs(){
6793     eval "program_libs=\$${1}_libs"
6794     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6795 }
6796
6797 map 'print_program_libs $v' $PROGRAM_LIST
6798
6799 cat > $TMPH <<EOF
6800 /* Automatically generated by configure - do not modify! */
6801 #ifndef FFMPEG_CONFIG_H
6802 #define FFMPEG_CONFIG_H
6803 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6804 #define FFMPEG_LICENSE "$(c_escape $license)"
6805 #define CONFIG_THIS_YEAR 2017
6806 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6807 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6808 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6809 #define av_restrict $_restrict
6810 #define EXTERN_PREFIX "${extern_prefix}"
6811 #define EXTERN_ASM ${extern_prefix}
6812 #define BUILDSUF "$build_suffix"
6813 #define SLIBSUF "$SLIBSUF"
6814 #define HAVE_MMX2 HAVE_MMXEXT
6815 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6816 EOF
6817
6818 test -n "$assert_level" &&
6819     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6820
6821 test -n "$malloc_prefix" &&
6822     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6823
6824 if enabled yasm; then
6825     append config_files $TMPASM
6826     printf '' >$TMPASM
6827 fi
6828
6829 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6830
6831
6832 mkdir -p doc
6833 mkdir -p tests
6834 mkdir -p tests/api
6835 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6836
6837 print_config ARCH_   "$config_files" $ARCH_LIST
6838 print_config HAVE_   "$config_files" $HAVE_LIST
6839 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6840                                      $CONFIG_EXTRA      \
6841                                      $ALL_COMPONENTS    \
6842
6843 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6844 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6845
6846 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6847 cp_if_changed $TMPH config.h
6848 touch .config
6849
6850 enabled yasm && cp_if_changed $TMPASM config.asm
6851
6852 cat > $TMPH <<EOF
6853 /* Generated by ffconf */
6854 #ifndef AVUTIL_AVCONFIG_H
6855 #define AVUTIL_AVCONFIG_H
6856 EOF
6857
6858 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6859
6860 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6861
6862 cp_if_changed $TMPH libavutil/avconfig.h
6863
6864 if test -n "$WARNINGS"; then
6865     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6866     enabled fatal_warnings && exit 1
6867 fi
6868
6869 # generate the lists of enabled components
6870 print_enabled_components(){
6871     file=$1
6872     struct_name=$2
6873     name=$3
6874     shift 3
6875     echo "static const $struct_name *$name[] = {" > $TMPH
6876     for c in $*; do
6877         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6878     done
6879     echo "    NULL };" >> $TMPH
6880     cp_if_changed $TMPH $file
6881 }
6882
6883 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6884 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6885
6886 # build pkg-config files
6887
6888 lib_version(){
6889     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6890 }
6891
6892 pkgconfig_generate(){
6893     name=$1
6894     shortname=${name#lib}${build_suffix}
6895     comment=$2
6896     version=$3
6897     libs=$4
6898     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6899     requires=${requires%, }
6900     enabled ${name#lib} || return 0
6901     mkdir -p $name
6902     cat <<EOF > $name/$name${build_suffix}.pc
6903 prefix=$prefix
6904 exec_prefix=\${prefix}
6905 libdir=$libdir
6906 includedir=$incdir
6907
6908 Name: $name
6909 Description: $comment
6910 Version: $version
6911 Requires: $(enabled shared || echo $requires)
6912 Requires.private: $(enabled shared && echo $requires)
6913 Conflicts:
6914 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6915 Libs.private: $(enabled shared && echo $libs)
6916 Cflags: -I\${includedir}
6917 EOF
6918
6919 mkdir -p doc/examples/pc-uninstalled
6920 includedir=${source_path}
6921 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6922     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6923 prefix=
6924 exec_prefix=
6925 libdir=\${pcfiledir}/../../../$name
6926 includedir=${includedir}
6927
6928 Name: $name
6929 Description: $comment
6930 Version: $version
6931 Requires: $requires
6932 Conflicts:
6933 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6934 Cflags: -I\${includedir}
6935 EOF
6936 }
6937
6938 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6939 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6940 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6941 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6942 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6943 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6944 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6945 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6946 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"