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_16
1839 "
1840
1841 BUILTIN_LIST="
1842     atomic_cas_ptr
1843     machine_rw_barrier
1844     MemoryBarrier
1845     mm_empty
1846     rdtsc
1847     sarestart
1848     sem_timedwait
1849     sync_val_compare_and_swap
1850 "
1851 HAVE_LIST_CMDLINE="
1852     inline_asm
1853     symver
1854     yasm
1855 "
1856
1857 HAVE_LIST_PUB="
1858     bigendian
1859     fast_unaligned
1860 "
1861
1862 HEADERS_LIST="
1863     alsa_asoundlib_h
1864     altivec_h
1865     arpa_inet_h
1866     asm_types_h
1867     cdio_paranoia_h
1868     cdio_paranoia_paranoia_h
1869     cuda_h
1870     dispatch_dispatch_h
1871     dev_bktr_ioctl_bt848_h
1872     dev_bktr_ioctl_meteor_h
1873     dev_ic_bt8xx_h
1874     dev_video_bktr_ioctl_bt848_h
1875     dev_video_meteor_ioctl_meteor_h
1876     direct_h
1877     dirent_h
1878     dlfcn_h
1879     d3d11_h
1880     dxva_h
1881     ES2_gl_h
1882     gsm_h
1883     io_h
1884     mach_mach_time_h
1885     machine_ioctl_bt848_h
1886     machine_ioctl_meteor_h
1887     malloc_h
1888     opencv2_core_core_c_h
1889     openjpeg_2_1_openjpeg_h
1890     openjpeg_2_0_openjpeg_h
1891     openjpeg_1_5_openjpeg_h
1892     OpenGL_gl3_h
1893     poll_h
1894     sndio_h
1895     soundcard_h
1896     stdatomic_h
1897     sys_mman_h
1898     sys_param_h
1899     sys_resource_h
1900     sys_select_h
1901     sys_soundcard_h
1902     sys_time_h
1903     sys_un_h
1904     sys_videoio_h
1905     termios_h
1906     udplite_h
1907     unistd_h
1908     valgrind_valgrind_h
1909     windows_h
1910     winsock2_h
1911 "
1912
1913 INTRINSICS_LIST="
1914     intrinsics_neon
1915 "
1916
1917 COMPLEX_FUNCS="
1918     cabs
1919     cexp
1920 "
1921
1922 MATH_FUNCS="
1923     atanf
1924     atan2f
1925     cbrt
1926     cbrtf
1927     copysign
1928     cosf
1929     erf
1930     exp2
1931     exp2f
1932     expf
1933     hypot
1934     isfinite
1935     isinf
1936     isnan
1937     ldexpf
1938     llrint
1939     llrintf
1940     log2
1941     log2f
1942     log10f
1943     lrint
1944     lrintf
1945     powf
1946     rint
1947     round
1948     roundf
1949     sinf
1950     trunc
1951     truncf
1952 "
1953
1954 SYSTEM_FUNCS="
1955     access
1956     aligned_malloc
1957     arc4random
1958     clock_gettime
1959     closesocket
1960     CommandLineToArgvW
1961     CoTaskMemFree
1962     CryptGenRandom
1963     dlopen
1964     fcntl
1965     flt_lim
1966     fork
1967     getaddrinfo
1968     gethrtime
1969     getopt
1970     GetProcessAffinityMask
1971     GetProcessMemoryInfo
1972     GetProcessTimes
1973     getrusage
1974     GetSystemTimeAsFileTime
1975     gettimeofday
1976     glob
1977     glXGetProcAddress
1978     gmtime_r
1979     inet_aton
1980     isatty
1981     jack_port_get_latency_range
1982     kbhit
1983     LoadLibrary
1984     localtime_r
1985     lstat
1986     lzo1x_999_compress
1987     mach_absolute_time
1988     MapViewOfFile
1989     memalign
1990     mkstemp
1991     mmap
1992     mprotect
1993     nanosleep
1994     PeekNamedPipe
1995     posix_memalign
1996     pthread_cancel
1997     sched_getaffinity
1998     SetConsoleTextAttribute
1999     SetConsoleCtrlHandler
2000     setmode
2001     setrlimit
2002     Sleep
2003     strerror_r
2004     sysconf
2005     sysctl
2006     usleep
2007     UTGetOSTypeFromString
2008     VirtualAlloc
2009     wglGetProcAddress
2010 "
2011
2012 TOOLCHAIN_FEATURES="
2013     as_dn_directive
2014     as_fpu_directive
2015     as_func
2016     as_object_arch
2017     asm_mod_q
2018     attribute_may_alias
2019     attribute_packed
2020     ebp_available
2021     ebx_available
2022     gnu_as
2023     gnu_windres
2024     ibm_asm
2025     inline_asm_direct_symbol_refs
2026     inline_asm_labels
2027     inline_asm_nonlocal_labels
2028     pragma_deprecated
2029     rsync_contimeout
2030     symver_asm_label
2031     symver_gnu_asm
2032     vfp_args
2033     xform_asm
2034     xmm_clobbers
2035 "
2036
2037 TYPES_LIST="
2038     CONDITION_VARIABLE_Ptr
2039     socklen_t
2040     struct_addrinfo
2041     struct_group_source_req
2042     struct_ip_mreq_source
2043     struct_ipv6_mreq
2044     struct_msghdr_msg_flags
2045     struct_pollfd
2046     struct_rusage_ru_maxrss
2047     struct_sctp_event_subscribe
2048     struct_sockaddr_in6
2049     struct_sockaddr_sa_len
2050     struct_sockaddr_storage
2051     struct_stat_st_mtim_tv_nsec
2052     struct_v4l2_frmivalenum_discrete
2053 "
2054
2055 HAVE_LIST="
2056     $ARCH_EXT_LIST
2057     $(add_suffix _external $ARCH_EXT_LIST)
2058     $(add_suffix _inline   $ARCH_EXT_LIST)
2059     $ARCH_FEATURES
2060     $ATOMICS_LIST
2061     $BUILTIN_LIST
2062     $COMPLEX_FUNCS
2063     $HAVE_LIST_CMDLINE
2064     $HAVE_LIST_PUB
2065     $HEADERS_LIST
2066     $INTRINSICS_LIST
2067     $MATH_FUNCS
2068     $SYSTEM_FUNCS
2069     $THREADS_LIST
2070     $TOOLCHAIN_FEATURES
2071     $TYPES_LIST
2072     atomics_native
2073     dos_paths
2074     dxva2_lib
2075     dxva2api_cobj
2076     libc_msvcrt
2077     libdc1394_1
2078     libdc1394_2
2079     makeinfo
2080     makeinfo_html
2081     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2082     perl
2083     pod2man
2084     sdl2
2085     section_data_rel_ro
2086     texi2html
2087     threads
2088     vaapi_drm
2089     vaapi_x11
2090     vdpau_x11
2091     winrt
2092     xlib
2093 "
2094
2095 # options emitted with CONFIG_ prefix but not available on the command line
2096 CONFIG_EXTRA="
2097     aandcttables
2098     ac3dsp
2099     audio_frame_queue
2100     audiodsp
2101     blockdsp
2102     bswapdsp
2103     cabac
2104     dirac_parse
2105     dvprofile
2106     exif
2107     faandct
2108     faanidct
2109     fdctdsp
2110     flacdsp
2111     fmtconvert
2112     frame_thread_encoder
2113     g722dsp
2114     golomb
2115     gplv3
2116     h263dsp
2117     h264chroma
2118     h264dsp
2119     h264parse
2120     h264pred
2121     h264qpel
2122     hpeldsp
2123     huffman
2124     huffyuvdsp
2125     huffyuvencdsp
2126     idctdsp
2127     iirfilter
2128     mdct15
2129     intrax8
2130     iso_media
2131     ividsp
2132     jpegtables
2133     lgplv3
2134     libx262
2135     llauddsp
2136     llviddsp
2137     llvidencdsp
2138     lpc
2139     lzf
2140     me_cmp
2141     mpeg_er
2142     mpegaudio
2143     mpegaudiodsp
2144     mpegvideo
2145     mpegvideoenc
2146     mss34dsp
2147     pixblockdsp
2148     qpeldsp
2149     qsv
2150     qsvdec
2151     qsvenc
2152     rangecoder
2153     riffdec
2154     riffenc
2155     rtpdec
2156     rtpenc_chain
2157     rv34dsp
2158     sinewin
2159     snappy
2160     srtp
2161     startcode
2162     texturedsp
2163     texturedspenc
2164     tpeldsp
2165     vaapi_encode
2166     vc1dsp
2167     videodsp
2168     vp3dsp
2169     vp56dsp
2170     vp8dsp
2171     vt_bt2020
2172     wma_freqs
2173     wmv2dsp
2174 "
2175
2176 CMDLINE_SELECT="
2177     $ARCH_EXT_LIST
2178     $CONFIG_LIST
2179     $HAVE_LIST_CMDLINE
2180     $THREADS_LIST
2181     asm
2182     cross_compile
2183     debug
2184     extra_warnings
2185     logging
2186     lto
2187     optimizations
2188     rpath
2189     stripping
2190 "
2191
2192 PATHS_LIST="
2193     bindir
2194     datadir
2195     docdir
2196     incdir
2197     libdir
2198     mandir
2199     pkgconfigdir
2200     prefix
2201     shlibdir
2202     install_name_dir
2203 "
2204
2205 CMDLINE_SET="
2206     $PATHS_LIST
2207     ar
2208     arch
2209     as
2210     assert_level
2211     build_suffix
2212     cc
2213     objcc
2214     cpu
2215     cross_prefix
2216     custom_allocator
2217     cxx
2218     dep_cc
2219     doxygen
2220     env
2221     extra_version
2222     gas
2223     host_cc
2224     host_cflags
2225     host_ld
2226     host_ldflags
2227     host_libs
2228     host_os
2229     install
2230     ld
2231     ln_s
2232     logfile
2233     malloc_prefix
2234     nm
2235     optflags
2236     pkg_config
2237     pkg_config_flags
2238     progs_suffix
2239     random_seed
2240     ranlib
2241     samples
2242     strip
2243     sws_max_filter_size
2244     sysinclude
2245     sysroot
2246     target_exec
2247     target_os
2248     target_path
2249     target_samples
2250     tempprefix
2251     toolchain
2252     valgrind
2253     yasmexe
2254 "
2255
2256 CMDLINE_APPEND="
2257     extra_cflags
2258     extra_cxxflags
2259     extra_objcflags
2260     host_cppflags
2261 "
2262
2263 # code dependency declarations
2264
2265 # architecture extensions
2266
2267 armv5te_deps="arm"
2268 armv6_deps="arm"
2269 armv6t2_deps="arm"
2270 armv8_deps="aarch64"
2271 neon_deps_any="aarch64 arm"
2272 intrinsics_neon_deps="neon"
2273 vfp_deps_any="aarch64 arm"
2274 vfpv3_deps="vfp"
2275 setend_deps="arm"
2276
2277 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2278
2279 loongson2_deps="mips"
2280 loongson3_deps="mips"
2281 mipsfpu_deps="mips"
2282 mipsdsp_deps="mips"
2283 mipsdspr2_deps="mips"
2284 mips32r2_deps="mips"
2285 mips32r5_deps="mips"
2286 mips32r6_deps="mips"
2287 mips64r2_deps="mips"
2288 mips64r6_deps="mips"
2289 msa_deps="mipsfpu"
2290 mmi_deps="mips"
2291
2292 altivec_deps="ppc"
2293 dcbzl_deps="ppc"
2294 ldbrx_deps="ppc"
2295 ppc4xx_deps="ppc"
2296 vsx_deps="altivec"
2297 power8_deps="vsx"
2298
2299 cpunop_deps="i686"
2300 x86_64_select="i686"
2301 x86_64_suggest="fast_cmov"
2302
2303 amd3dnow_deps="mmx"
2304 amd3dnowext_deps="amd3dnow"
2305 i686_deps="x86"
2306 mmx_deps="x86"
2307 mmxext_deps="mmx"
2308 sse_deps="mmxext"
2309 sse2_deps="sse"
2310 sse3_deps="sse2"
2311 ssse3_deps="sse3"
2312 sse4_deps="ssse3"
2313 sse42_deps="sse4"
2314 aesni_deps="sse42"
2315 avx_deps="sse42"
2316 xop_deps="avx"
2317 fma3_deps="avx"
2318 fma4_deps="avx"
2319 avx2_deps="avx"
2320
2321 mmx_external_deps="yasm"
2322 mmx_inline_deps="inline_asm"
2323 mmx_suggest="mmx_external mmx_inline"
2324
2325 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2326     eval dep=\$${ext}_deps
2327     eval ${ext}_external_deps='"${dep}_external"'
2328     eval ${ext}_inline_deps='"${dep}_inline"'
2329     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2330 done
2331
2332 aligned_stack_if_any="aarch64 ppc x86"
2333 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2334 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2335 fast_unaligned_if_any="aarch64 ppc x86"
2336 simd_align_16_if_any="altivec neon sse"
2337
2338 # system capabilities
2339 symver_if_any="symver_asm_label symver_gnu_asm"
2340 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2341
2342 # threading support
2343 atomics_gcc_if="sync_val_compare_and_swap"
2344 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2345 atomics_win32_if="MemoryBarrier"
2346 atomics_native_if_any="$ATOMICS_LIST"
2347 w32threads_deps="atomics_native"
2348 threads_if_any="$THREADS_LIST"
2349
2350 # subsystems
2351 dct_select="rdft"
2352 dirac_parse_select="golomb"
2353 error_resilience_select="me_cmp"
2354 faandct_deps="faan fdctdsp"
2355 faanidct_deps="faan idctdsp"
2356 h264dsp_select="startcode"
2357 frame_thread_encoder_deps="encoders threads"
2358 intrax8_select="blockdsp idctdsp"
2359 mdct_select="fft"
2360 mdct15_select="fft"
2361 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2362 mpeg_er_select="error_resilience"
2363 mpegaudio_select="mpegaudiodsp"
2364 mpegaudiodsp_select="dct"
2365 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2366 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2367 vc1dsp_select="h264chroma qpeldsp startcode"
2368 rdft_select="fft"
2369
2370 # decoders / encoders
2371 aac_decoder_select="mdct15 mdct sinewin"
2372 aac_fixed_decoder_select="mdct sinewin"
2373 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2374 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2375 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2376 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2377 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2378 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2379 adpcm_g722_decoder_select="g722dsp"
2380 adpcm_g722_encoder_select="g722dsp"
2381 aic_decoder_select="golomb idctdsp"
2382 alac_encoder_select="lpc"
2383 als_decoder_select="bswapdsp"
2384 amrnb_decoder_select="lsp"
2385 amrwb_decoder_select="lsp"
2386 amv_decoder_select="sp5x_decoder exif"
2387 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2388 ape_decoder_select="bswapdsp llauddsp"
2389 apng_decoder_select="zlib"
2390 apng_encoder_select="llvidencdsp zlib"
2391 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2392 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2393 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2394 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2395 atrac1_decoder_select="mdct sinewin"
2396 atrac3_decoder_select="mdct"
2397 atrac3p_decoder_select="mdct sinewin"
2398 avrn_decoder_select="exif jpegtables"
2399 bink_decoder_select="blockdsp hpeldsp"
2400 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2401 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2402 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2403 cllc_decoder_select="bswapdsp"
2404 comfortnoise_encoder_select="lpc"
2405 cook_decoder_select="audiodsp mdct sinewin"
2406 cscd_decoder_select="lzo"
2407 cscd_decoder_suggest="zlib"
2408 dca_decoder_select="mdct"
2409 dds_decoder_select="texturedsp"
2410 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2411 dnxhd_decoder_select="blockdsp idctdsp"
2412 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2413 dvvideo_decoder_select="dvprofile idctdsp"
2414 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2415 dxa_decoder_select="zlib"
2416 dxv_decoder_select="lzf texturedsp"
2417 eac3_decoder_select="ac3_decoder"
2418 eac3_encoder_select="ac3_encoder"
2419 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2420 eatgq_decoder_select="aandcttables"
2421 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2422 exr_decoder_select="zlib"
2423 ffv1_decoder_select="golomb rangecoder"
2424 ffv1_encoder_select="rangecoder"
2425 ffvhuff_decoder_select="huffyuv_decoder"
2426 ffvhuff_encoder_select="huffyuv_encoder"
2427 fic_decoder_select="golomb"
2428 flac_decoder_select="flacdsp golomb"
2429 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2430 flashsv2_decoder_select="zlib"
2431 flashsv2_encoder_select="zlib"
2432 flashsv_decoder_select="zlib"
2433 flashsv_encoder_select="zlib"
2434 flv_decoder_select="h263_decoder"
2435 flv_encoder_select="h263_encoder"
2436 fourxm_decoder_select="blockdsp bswapdsp"
2437 fraps_decoder_select="bswapdsp huffman"
2438 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2439 g729_decoder_select="audiodsp"
2440 h261_decoder_select="mpegvideo"
2441 h261_encoder_select="aandcttables mpegvideoenc"
2442 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2443 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2444 h263i_decoder_select="h263_decoder"
2445 h263p_decoder_select="h263_decoder"
2446 h263p_encoder_select="h263_encoder"
2447 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2448 h264_decoder_suggest="error_resilience"
2449 hap_decoder_select="snappy texturedsp"
2450 hap_encoder_deps="libsnappy"
2451 hap_encoder_select="texturedspenc"
2452 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2453 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2454 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2455 iac_decoder_select="imc_decoder"
2456 imc_decoder_select="bswapdsp fft mdct sinewin"
2457 indeo3_decoder_select="hpeldsp"
2458 indeo4_decoder_select="ividsp"
2459 indeo5_decoder_select="ividsp"
2460 interplay_video_decoder_select="hpeldsp"
2461 jpegls_decoder_select="golomb mjpeg_decoder"
2462 jpegls_encoder_select="golomb"
2463 jv_decoder_select="blockdsp"
2464 lagarith_decoder_select="llviddsp"
2465 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2466 loco_decoder_select="golomb"
2467 magicyuv_decoder_select="llviddsp"
2468 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2469 metasound_decoder_select="lsp mdct sinewin"
2470 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2471 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2472 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2473 mjpegb_decoder_select="mjpeg_decoder"
2474 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2475 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2476 mlp_decoder_select="mlp_parser"
2477 motionpixels_decoder_select="bswapdsp"
2478 mp1_decoder_select="mpegaudio"
2479 mp1float_decoder_select="mpegaudio"
2480 mp2_decoder_select="mpegaudio"
2481 mp2float_decoder_select="mpegaudio"
2482 mp3_decoder_select="mpegaudio"
2483 mp3adu_decoder_select="mpegaudio"
2484 mp3adufloat_decoder_select="mpegaudio"
2485 mp3float_decoder_select="mpegaudio"
2486 mp3on4_decoder_select="mpegaudio"
2487 mp3on4float_decoder_select="mpegaudio"
2488 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2489 mpc8_decoder_select="mpegaudiodsp"
2490 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2491 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2492 mpegvideo_decoder_select="mpegvideo"
2493 mpeg1video_decoder_select="mpegvideo"
2494 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2495 mpeg2video_decoder_select="mpegvideo"
2496 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2497 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2498 mpeg4_encoder_select="h263_encoder"
2499 msa1_decoder_select="mss34dsp"
2500 msmpeg4v1_decoder_select="h263_decoder"
2501 msmpeg4v2_decoder_select="h263_decoder"
2502 msmpeg4v2_encoder_select="h263_encoder"
2503 msmpeg4v3_decoder_select="h263_decoder"
2504 msmpeg4v3_encoder_select="h263_encoder"
2505 mss2_decoder_select="vc1_decoder mpegvideo"
2506 mts2_decoder_select="mss34dsp"
2507 mxpeg_decoder_select="mjpeg_decoder"
2508 nellymoser_decoder_select="mdct sinewin"
2509 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2510 nuv_decoder_select="idctdsp lzo"
2511 on2avc_decoder_select="mdct"
2512 opus_decoder_deps="swresample"
2513 opus_decoder_select="mdct15"
2514 opus_encoder_select="audio_frame_queue mdct15"
2515 png_decoder_select="zlib"
2516 png_encoder_select="llvidencdsp zlib"
2517 prores_decoder_select="blockdsp idctdsp"
2518 prores_encoder_select="fdctdsp"
2519 qcelp_decoder_select="lsp"
2520 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2521 ra_144_decoder_select="audiodsp"
2522 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2523 ralf_decoder_select="golomb"
2524 rawvideo_decoder_select="bswapdsp"
2525 rscc_decoder_select="zlib"
2526 rtjpeg_decoder_select="me_cmp"
2527 rv10_decoder_select="h263_decoder"
2528 rv10_encoder_select="h263_encoder"
2529 rv20_decoder_select="h263_decoder"
2530 rv20_encoder_select="h263_encoder"
2531 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2532 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2533 screenpresso_decoder_select="zlib"
2534 shorten_decoder_select="golomb bswapdsp"
2535 sipr_decoder_select="lsp"
2536 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2537 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2538 sonic_decoder_select="golomb rangecoder"
2539 sonic_encoder_select="golomb rangecoder"
2540 sonic_ls_encoder_select="golomb rangecoder"
2541 sp5x_decoder_select="mjpeg_decoder"
2542 svq1_decoder_select="hpeldsp"
2543 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2544 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2545 svq3_decoder_suggest="zlib"
2546 tak_decoder_select="audiodsp"
2547 tdsc_decoder_select="zlib mjpeg_decoder"
2548 theora_decoder_select="vp3_decoder"
2549 thp_decoder_select="mjpeg_decoder"
2550 tiff_decoder_suggest="zlib lzma"
2551 tiff_encoder_suggest="zlib"
2552 truehd_decoder_select="mlp_parser"
2553 truemotion2_decoder_select="bswapdsp"
2554 truespeech_decoder_select="bswapdsp"
2555 tscc_decoder_select="zlib"
2556 twinvq_decoder_select="mdct lsp sinewin"
2557 txd_decoder_select="texturedsp"
2558 utvideo_decoder_select="bswapdsp llviddsp"
2559 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2560 vble_decoder_select="llviddsp"
2561 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2562 vc1_qsv_decoder_deps="libmfx"
2563 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2564 vc1image_decoder_select="vc1_decoder"
2565 vorbis_decoder_select="mdct"
2566 vorbis_encoder_select="mdct"
2567 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2568 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2569 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2570 vp6a_decoder_select="vp6_decoder"
2571 vp6f_decoder_select="vp6_decoder"
2572 vp7_decoder_select="h264pred videodsp vp8dsp"
2573 vp8_decoder_select="h264pred videodsp vp8dsp"
2574 vp9_decoder_select="videodsp vp9_parser"
2575 webp_decoder_select="vp8_decoder exif"
2576 wmalossless_decoder_select="llauddsp"
2577 wmapro_decoder_select="mdct sinewin wma_freqs"
2578 wmav1_decoder_select="mdct sinewin wma_freqs"
2579 wmav1_encoder_select="mdct sinewin wma_freqs"
2580 wmav2_decoder_select="mdct sinewin wma_freqs"
2581 wmav2_encoder_select="mdct sinewin wma_freqs"
2582 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2583 wmv1_decoder_select="h263_decoder"
2584 wmv1_encoder_select="h263_encoder"
2585 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2586 wmv2_encoder_select="h263_encoder wmv2dsp"
2587 wmv3_decoder_select="vc1_decoder"
2588 wmv3image_decoder_select="wmv3_decoder"
2589 xma1_decoder_select="wmapro_decoder"
2590 xma2_decoder_select="wmapro_decoder"
2591 zerocodec_decoder_select="zlib"
2592 zlib_decoder_select="zlib"
2593 zlib_encoder_select="zlib"
2594 zmbv_decoder_select="zlib"
2595 zmbv_encoder_select="zlib"
2596
2597 # platform codecs
2598 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2599 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2600
2601 # hardware accelerators
2602 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2603 cuda_deps_any="dlopen LoadLibrary"
2604 cuvid_deps="cuda"
2605 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2606 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2607 dxva2_extralibs="-luser32"
2608 vaapi_deps="va_va_h"
2609 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2610 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2611 vda_deps="vda_framework pthreads"
2612 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2613 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2614 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2615 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2616 xvmc_deps="X11_extensions_XvMClib_h"
2617
2618 h263_vaapi_hwaccel_deps="vaapi"
2619 h263_vaapi_hwaccel_select="h263_decoder"
2620 h263_videotoolbox_hwaccel_deps="videotoolbox"
2621 h263_videotoolbox_hwaccel_select="h263_decoder"
2622 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2623 h264_cuvid_hwaccel_deps="cuda cuvid"
2624 h264_d3d11va_hwaccel_deps="d3d11va"
2625 h264_d3d11va_hwaccel_select="h264_decoder"
2626 h264_dxva2_hwaccel_deps="dxva2"
2627 h264_dxva2_hwaccel_select="h264_decoder"
2628 h264_mediacodec_decoder_deps="mediacodec"
2629 h264_mediacodec_hwaccel_deps="mediacodec"
2630 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2631 h264_mmal_decoder_deps="mmal"
2632 h264_mmal_decoder_select="mmal"
2633 h264_mmal_hwaccel_deps="mmal"
2634 h264_omx_encoder_deps="omx"
2635 h264_qsv_hwaccel_deps="libmfx"
2636 h264_vaapi_hwaccel_deps="vaapi"
2637 h264_vaapi_hwaccel_select="h264_decoder"
2638 h264_vda_decoder_deps="vda"
2639 h264_vda_decoder_select="h264_decoder"
2640 h264_vda_hwaccel_deps="vda"
2641 h264_vda_hwaccel_select="h264_decoder"
2642 h264_vda_old_hwaccel_deps="vda"
2643 h264_vda_old_hwaccel_select="h264_decoder"
2644 h264_vdpau_decoder_deps="vdpau"
2645 h264_vdpau_decoder_select="h264_decoder"
2646 h264_vdpau_hwaccel_deps="vdpau"
2647 h264_vdpau_hwaccel_select="h264_decoder"
2648 h264_videotoolbox_hwaccel_deps="videotoolbox"
2649 h264_videotoolbox_hwaccel_select="h264_decoder"
2650 hevc_cuvid_hwaccel_deps="cuda cuvid"
2651 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2652 hevc_d3d11va_hwaccel_select="hevc_decoder"
2653 hevc_mediacodec_decoder_deps="mediacodec"
2654 hevc_mediacodec_hwaccel_deps="mediacodec"
2655 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2656 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2657 hevc_dxva2_hwaccel_select="hevc_decoder"
2658 hevc_qsv_hwaccel_deps="libmfx"
2659 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2660 hevc_vaapi_hwaccel_select="hevc_decoder"
2661 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2662 hevc_vdpau_hwaccel_select="hevc_decoder"
2663 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2664 mpeg_vdpau_decoder_deps="vdpau"
2665 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2666 mpeg_xvmc_hwaccel_deps="xvmc"
2667 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2668 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2669 mpeg1_vdpau_decoder_deps="vdpau"
2670 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2671 mpeg1_vdpau_hwaccel_deps="vdpau"
2672 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2673 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2674 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2675 mpeg1_xvmc_hwaccel_deps="xvmc"
2676 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2677 mpeg2_crystalhd_decoder_select="crystalhd"
2678 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2679 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2680 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2681 mpeg2_dxva2_hwaccel_deps="dxva2"
2682 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2683 mpeg2_mmal_decoder_deps="mmal"
2684 mpeg2_mmal_decoder_select="mmal"
2685 mpeg2_mmal_hwaccel_deps="mmal"
2686 mpeg2_qsv_hwaccel_deps="libmfx"
2687 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2688 mpeg2_vaapi_hwaccel_deps="vaapi"
2689 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2690 mpeg2_vdpau_hwaccel_deps="vdpau"
2691 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2692 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2693 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2694 mpeg2_xvmc_hwaccel_deps="xvmc"
2695 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2696 mpeg4_crystalhd_decoder_select="crystalhd"
2697 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2698 mpeg4_mediacodec_decoder_deps="mediacodec"
2699 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2700 mpeg4_mmal_decoder_deps="mmal"
2701 mpeg4_mmal_decoder_select="mmal"
2702 mpeg4_mmal_hwaccel_deps="mmal"
2703 mpeg4_omx_encoder_deps="omx"
2704 mpeg4_vaapi_hwaccel_deps="vaapi"
2705 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2706 mpeg4_vdpau_decoder_deps="vdpau"
2707 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2708 mpeg4_vdpau_hwaccel_deps="vdpau"
2709 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2710 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2711 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2712 msmpeg4_crystalhd_decoder_select="crystalhd"
2713 vc1_crystalhd_decoder_select="crystalhd"
2714 vc1_cuvid_hwaccel_deps="cuda cuvid"
2715 vc1_d3d11va_hwaccel_deps="d3d11va"
2716 vc1_d3d11va_hwaccel_select="vc1_decoder"
2717 vc1_dxva2_hwaccel_deps="dxva2"
2718 vc1_dxva2_hwaccel_select="vc1_decoder"
2719 vc1_mmal_decoder_deps="mmal"
2720 vc1_mmal_decoder_select="mmal"
2721 vc1_mmal_hwaccel_deps="mmal"
2722 vc1_qsv_hwaccel_deps="libmfx"
2723 vc1_qsv_hwaccel_select="qsvdec_vc1"
2724 vc1_vaapi_hwaccel_deps="vaapi"
2725 vc1_vaapi_hwaccel_select="vc1_decoder"
2726 vc1_vdpau_decoder_deps="vdpau"
2727 vc1_vdpau_decoder_select="vc1_decoder"
2728 vc1_vdpau_hwaccel_deps="vdpau"
2729 vc1_vdpau_hwaccel_select="vc1_decoder"
2730 vp8_cuvid_hwaccel_deps="cuda cuvid"
2731 vp9_cuvid_hwaccel_deps="cuda cuvid"
2732 vp8_mediacodec_decoder_deps="mediacodec"
2733 vp8_mediacodec_hwaccel_deps="mediacodec"
2734 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2735 vp9_d3d11va_hwaccel_select="vp9_decoder"
2736 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2737 vp9_dxva2_hwaccel_select="vp9_decoder"
2738 vp9_mediacodec_decoder_deps="mediacodec"
2739 vp9_mediacodec_hwaccel_deps="mediacodec"
2740 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2741 vp9_vaapi_hwaccel_select="vp9_decoder"
2742 wmv3_crystalhd_decoder_select="crystalhd"
2743 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2744 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2745 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2746 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2747 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2748
2749 # hardware-accelerated codecs
2750 omx_deps="dlopen pthreads"
2751 omx_extralibs='$ldl'
2752 qsvdec_select="qsv"
2753 qsvenc_select="qsv"
2754 vaapi_encode_deps="vaapi"
2755
2756 hwupload_cuda_filter_deps="cuda"
2757 scale_npp_filter_deps="cuda libnpp"
2758
2759 nvenc_deps="cuda"
2760 nvenc_deps_any="dlopen LoadLibrary"
2761 nvenc_encoder_deps="nvenc"
2762 h264_cuvid_decoder_deps="cuda cuvid"
2763 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2764 h264_nvenc_encoder_deps="nvenc"
2765 h264_qsv_decoder_deps="libmfx"
2766 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2767 h264_qsv_encoder_deps="libmfx"
2768 h264_qsv_encoder_select="qsvenc"
2769 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2770 h264_vaapi_encoder_select="vaapi_encode golomb"
2771
2772 hevc_cuvid_decoder_deps="cuda cuvid"
2773 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2774 hevc_nvenc_encoder_deps="nvenc"
2775 hevc_qsv_decoder_deps="libmfx"
2776 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2777 hevc_qsv_encoder_deps="libmfx"
2778 hevc_qsv_encoder_select="qsvenc"
2779 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2780 hevc_vaapi_encoder_select="vaapi_encode golomb"
2781 mjpeg_cuvid_decoder_deps="cuda cuvid"
2782 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2783 mpeg1_cuvid_decoder_deps="cuda cuvid"
2784 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2785 mpeg2_cuvid_decoder_deps="cuda cuvid"
2786 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2787 mpeg2_qsv_decoder_deps="libmfx"
2788 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2789 mpeg2_qsv_encoder_deps="libmfx"
2790 mpeg2_qsv_encoder_select="qsvenc"
2791 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2792 mpeg2_vaapi_encoder_select="vaapi_encode"
2793 mpeg4_cuvid_decoder_deps="cuda cuvid"
2794 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2795 nvenc_h264_encoder_deps="nvenc"
2796 nvenc_hevc_encoder_deps="nvenc"
2797
2798 vc1_cuvid_decoder_deps="cuda cuvid"
2799 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2800 vp8_cuvid_decoder_deps="cuda cuvid"
2801 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2802 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2803 vp8_vaapi_encoder_select="vaapi_encode"
2804 vp9_cuvid_decoder_deps="cuda cuvid"
2805 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2806
2807 # parsers
2808 h264_parser_select="golomb h264dsp h264parse"
2809 hevc_parser_select="golomb"
2810 mpegvideo_parser_select="mpegvideo"
2811 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2812 vc1_parser_select="vc1dsp"
2813
2814 # bitstream_filters
2815 mjpeg2jpeg_bsf_select="jpegtables"
2816
2817 # external libraries
2818 aac_at_decoder_deps="audiotoolbox"
2819 ac3_at_decoder_deps="audiotoolbox"
2820 ac3_at_decoder_select="ac3_parser"
2821 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2822 alac_at_decoder_deps="audiotoolbox"
2823 amr_nb_at_decoder_deps="audiotoolbox"
2824 avisynth_deps_any="dlopen LoadLibrary"
2825 avisynth_demuxer_deps="avisynth"
2826 avisynth_demuxer_select="riffdec"
2827 eac3_at_decoder_deps="audiotoolbox"
2828 eac3_at_decoder_select="ac3_parser"
2829 gsm_ms_at_decoder_deps="audiotoolbox"
2830 ilbc_at_decoder_deps="audiotoolbox"
2831 mp1_at_decoder_deps="audiotoolbox"
2832 mp2_at_decoder_deps="audiotoolbox"
2833 mp3_at_decoder_deps="audiotoolbox"
2834 pcm_alaw_at_decoder_deps="audiotoolbox"
2835 pcm_mulaw_at_decoder_deps="audiotoolbox"
2836 qdmc_at_decoder_deps="audiotoolbox"
2837 qdm2_at_decoder_deps="audiotoolbox"
2838 aac_at_encoder_deps="audiotoolbox"
2839 aac_at_encoder_select="audio_frame_queue"
2840 alac_at_encoder_deps="audiotoolbox"
2841 alac_at_encoder_select="audio_frame_queue"
2842 ilbc_at_encoder_deps="audiotoolbox"
2843 ilbc_at_encoder_select="audio_frame_queue"
2844 pcm_alaw_at_encoder_deps="audiotoolbox"
2845 pcm_alaw_at_encoder_select="audio_frame_queue"
2846 pcm_mulaw_at_encoder_deps="audiotoolbox"
2847 pcm_mulaw_at_encoder_select="audio_frame_queue"
2848 chromaprint_muxer_deps="chromaprint"
2849 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2850 libcelt_decoder_deps="libcelt"
2851 libfdk_aac_decoder_deps="libfdk_aac"
2852 libfdk_aac_encoder_deps="libfdk_aac"
2853 libfdk_aac_encoder_select="audio_frame_queue"
2854 libgme_demuxer_deps="libgme"
2855 libgsm_decoder_deps="libgsm"
2856 libgsm_encoder_deps="libgsm"
2857 libgsm_ms_decoder_deps="libgsm"
2858 libgsm_ms_encoder_deps="libgsm"
2859 libilbc_decoder_deps="libilbc"
2860 libilbc_encoder_deps="libilbc"
2861 libkvazaar_encoder_deps="libkvazaar"
2862 libmodplug_demuxer_deps="libmodplug"
2863 libmp3lame_encoder_deps="libmp3lame"
2864 libmp3lame_encoder_select="audio_frame_queue"
2865 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2866 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2867 libopencore_amrnb_encoder_select="audio_frame_queue"
2868 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2869 libopenh264_decoder_deps="libopenh264"
2870 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2871 libopenh264_encoder_deps="libopenh264"
2872 libopenjpeg_decoder_deps="libopenjpeg"
2873 libopenjpeg_encoder_deps="libopenjpeg"
2874 libopenmpt_demuxer_deps="libopenmpt"
2875 libopus_decoder_deps="libopus"
2876 libopus_encoder_deps="libopus"
2877 libopus_encoder_select="audio_frame_queue"
2878 libschroedinger_decoder_deps="libschroedinger"
2879 libschroedinger_encoder_deps="libschroedinger"
2880 libshine_encoder_deps="libshine"
2881 libshine_encoder_select="audio_frame_queue"
2882 libspeex_decoder_deps="libspeex"
2883 libspeex_encoder_deps="libspeex"
2884 libspeex_encoder_select="audio_frame_queue"
2885 libtheora_encoder_deps="libtheora"
2886 libtwolame_encoder_deps="libtwolame"
2887 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2888 libvorbis_decoder_deps="libvorbis"
2889 libvorbis_encoder_deps="libvorbis"
2890 libvorbis_encoder_select="audio_frame_queue"
2891 libvpx_vp8_decoder_deps="libvpx"
2892 libvpx_vp8_encoder_deps="libvpx"
2893 libvpx_vp9_decoder_deps="libvpx"
2894 libvpx_vp9_encoder_deps="libvpx"
2895 libwavpack_encoder_deps="libwavpack"
2896 libwebp_encoder_deps="libwebp"
2897 libwebp_anim_encoder_deps="libwebp"
2898 libx262_encoder_deps="libx262"
2899 libx264_encoder_deps="libx264"
2900 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2901 libx264rgb_encoder_select="libx264_encoder"
2902 libx265_encoder_deps="libx265"
2903 libxavs_encoder_deps="libxavs"
2904 libxvid_encoder_deps="libxvid"
2905 libzvbi_teletext_decoder_deps="libzvbi"
2906 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2907 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2908 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2909 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2910 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2911
2912 # demuxers / muxers
2913 ac3_demuxer_select="ac3_parser"
2914 aiff_muxer_select="iso_media"
2915 asf_demuxer_select="riffdec"
2916 asf_o_demuxer_select="riffdec"
2917 asf_muxer_select="riffenc"
2918 asf_stream_muxer_select="asf_muxer"
2919 avi_demuxer_select="iso_media riffdec exif"
2920 avi_muxer_select="riffenc"
2921 caf_demuxer_select="iso_media riffdec"
2922 caf_muxer_select="iso_media"
2923 dash_muxer_select="mp4_muxer"
2924 dirac_demuxer_select="dirac_parser"
2925 dts_demuxer_select="dca_parser"
2926 dtshd_demuxer_select="dca_parser"
2927 dv_demuxer_select="dvprofile"
2928 dv_muxer_select="dvprofile"
2929 dxa_demuxer_select="riffdec"
2930 eac3_demuxer_select="ac3_parser"
2931 f4v_muxer_select="mov_muxer"
2932 fifo_muxer_deps="threads"
2933 flac_demuxer_select="flac_parser"
2934 hds_muxer_select="flv_muxer"
2935 hls_muxer_select="mpegts_muxer"
2936 image2_alias_pix_demuxer_select="image2_demuxer"
2937 image2_brender_pix_demuxer_select="image2_demuxer"
2938 ipod_muxer_select="mov_muxer"
2939 ismv_muxer_select="mov_muxer"
2940 libnut_demuxer_deps="libnut"
2941 libnut_muxer_deps="libnut"
2942 matroska_audio_muxer_select="matroska_muxer"
2943 matroska_demuxer_select="iso_media riffdec"
2944 matroska_demuxer_suggest="bzlib lzo zlib"
2945 matroska_muxer_select="iso_media riffenc"
2946 mmf_muxer_select="riffenc"
2947 mov_demuxer_select="iso_media riffdec"
2948 mov_demuxer_suggest="zlib"
2949 mov_muxer_select="iso_media riffenc rtpenc_chain"
2950 mp3_demuxer_select="mpegaudio_parser"
2951 mp4_muxer_select="mov_muxer"
2952 mpegts_demuxer_select="iso_media"
2953 mpegts_muxer_select="adts_muxer latm_muxer"
2954 mpegtsraw_demuxer_select="mpegts_demuxer"
2955 mxf_d10_muxer_select="mxf_muxer"
2956 mxf_opatom_muxer_select="mxf_muxer"
2957 nut_muxer_select="riffenc"
2958 nuv_demuxer_select="riffdec"
2959 oga_muxer_select="ogg_muxer"
2960 ogg_demuxer_select="dirac_parse"
2961 ogv_muxer_select="ogg_muxer"
2962 opus_muxer_select="ogg_muxer"
2963 psp_muxer_select="mov_muxer"
2964 rtp_demuxer_select="sdp_demuxer"
2965 rtp_muxer_select="golomb"
2966 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2967 rtsp_demuxer_select="http_protocol rtpdec"
2968 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2969 sap_demuxer_select="sdp_demuxer"
2970 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2971 sdp_demuxer_select="rtpdec"
2972 smoothstreaming_muxer_select="ismv_muxer"
2973 spdif_muxer_select="aac_parser"
2974 spx_muxer_select="ogg_muxer"
2975 swf_demuxer_suggest="zlib"
2976 tak_demuxer_select="tak_parser"
2977 tg2_muxer_select="mov_muxer"
2978 tgp_muxer_select="mov_muxer"
2979 vobsub_demuxer_select="mpegps_demuxer"
2980 w64_demuxer_select="wav_demuxer"
2981 w64_muxer_select="wav_muxer"
2982 wav_demuxer_select="riffdec"
2983 wav_muxer_select="riffenc"
2984 webm_muxer_select="iso_media riffenc"
2985 webm_dash_manifest_demuxer_select="matroska_demuxer"
2986 wtv_demuxer_select="mpegts_demuxer riffdec"
2987 wtv_muxer_select="mpegts_muxer riffenc"
2988 xmv_demuxer_select="riffdec"
2989 xwma_demuxer_select="riffdec"
2990
2991 # indevs / outdevs
2992 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2993 alsa_outdev_deps="alsa_asoundlib_h"
2994 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2995 avfoundation_indev_select="avfoundation"
2996 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2997 caca_outdev_deps="libcaca"
2998 decklink_indev_deps="decklink pthreads"
2999 decklink_indev_extralibs="-lstdc++"
3000 decklink_outdev_deps="decklink pthreads"
3001 decklink_outdev_extralibs="-lstdc++"
3002 dshow_indev_deps="IBaseFilter"
3003 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3004 dv1394_indev_deps="dv1394"
3005 dv1394_indev_select="dv_demuxer"
3006 fbdev_indev_deps="linux_fb_h"
3007 fbdev_outdev_deps="linux_fb_h"
3008 gdigrab_indev_deps="CreateDIBSection"
3009 gdigrab_indev_extralibs="-lgdi32"
3010 gdigrab_indev_select="bmp_decoder"
3011 iec61883_indev_deps="libiec61883"
3012 jack_indev_deps="jack_jack_h"
3013 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3014 lavfi_indev_deps="avfilter"
3015 libcdio_indev_deps="libcdio"
3016 libdc1394_indev_deps="libdc1394"
3017 libv4l2_indev_deps="libv4l2"
3018 openal_indev_deps="openal"
3019 opengl_outdev_deps="opengl"
3020 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3021 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3022 pulse_indev_deps="libpulse"
3023 pulse_outdev_deps="libpulse"
3024 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3025 qtkit_indev_select="qtkit"
3026 sdl2_outdev_deps="sdl2"
3027 sndio_indev_deps="sndio_h"
3028 sndio_outdev_deps="sndio_h"
3029 v4l_indev_deps="linux_videodev_h"
3030 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3031 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3032 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3033 vfwcap_indev_extralibs="-lavicap32"
3034 xcbgrab_indev_deps="libxcb"
3035 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3036 xv_outdev_extralibs="-lXv -lX11 -lXext"
3037
3038 # protocols
3039 async_protocol_deps="threads"
3040 bluray_protocol_deps="libbluray"
3041 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3042 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3043 ffrtmpcrypt_protocol_select="tcp_protocol"
3044 ffrtmphttp_protocol_deps="!librtmp_protocol"
3045 ffrtmphttp_protocol_select="http_protocol"
3046 ftp_protocol_select="tcp_protocol"
3047 gopher_protocol_select="network"
3048 http_protocol_select="tcp_protocol"
3049 httpproxy_protocol_select="tcp_protocol"
3050 https_protocol_select="tls_protocol"
3051 icecast_protocol_select="http_protocol"
3052 librtmp_protocol_deps="librtmp"
3053 librtmpe_protocol_deps="librtmp"
3054 librtmps_protocol_deps="librtmp"
3055 librtmpt_protocol_deps="librtmp"
3056 librtmpte_protocol_deps="librtmp"
3057 libsmbclient_protocol_deps="libsmbclient gplv3"
3058 libssh_protocol_deps="libssh"
3059 mmsh_protocol_select="http_protocol"
3060 mmst_protocol_select="network"
3061 rtmp_protocol_deps="!librtmp_protocol"
3062 rtmp_protocol_select="tcp_protocol"
3063 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3064 rtmps_protocol_deps="!librtmp_protocol"
3065 rtmps_protocol_select="tls_protocol"
3066 rtmpt_protocol_select="ffrtmphttp_protocol"
3067 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3068 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3069 rtp_protocol_select="udp_protocol"
3070 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3071 sctp_protocol_select="network"
3072 srtp_protocol_select="rtp_protocol srtp"
3073 tcp_protocol_select="network"
3074 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3075 tls_gnutls_protocol_select="tcp_protocol"
3076 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3077 tls_openssl_protocol_select="tcp_protocol"
3078 tls_schannel_protocol_deps="schannel"
3079 tls_schannel_protocol_select="tcp_protocol"
3080 tls_securetransport_protocol_deps="securetransport"
3081 tls_securetransport_protocol_select="tcp_protocol"
3082 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3083 udp_protocol_select="network"
3084 udplite_protocol_select="network"
3085 unix_protocol_deps="sys_un_h"
3086 unix_protocol_select="network"
3087
3088 # filters
3089 afftfilt_filter_deps="avcodec"
3090 afftfilt_filter_select="fft"
3091 amovie_filter_deps="avcodec avformat"
3092 aresample_filter_deps="swresample"
3093 ass_filter_deps="libass"
3094 asyncts_filter_deps="avresample"
3095 atempo_filter_deps="avcodec"
3096 atempo_filter_select="rdft"
3097 azmq_filter_deps="libzmq"
3098 blackframe_filter_deps="gpl"
3099 boxblur_filter_deps="gpl"
3100 bs2b_filter_deps="libbs2b"
3101 colormatrix_filter_deps="gpl"
3102 cover_rect_filter_deps="avcodec avformat gpl"
3103 cropdetect_filter_deps="gpl"
3104 deinterlace_qsv_filter_deps="libmfx"
3105 deinterlace_vaapi_filter_deps="vaapi"
3106 delogo_filter_deps="gpl"
3107 deshake_filter_select="pixelutils"
3108 drawtext_filter_deps="libfreetype"
3109 eq_filter_deps="gpl"
3110 fftfilt_filter_deps="avcodec"
3111 fftfilt_filter_select="rdft"
3112 find_rect_filter_deps="avcodec avformat gpl"
3113 firequalizer_filter_deps="avcodec"
3114 firequalizer_filter_select="rdft"
3115 flite_filter_deps="libflite"
3116 framerate_filter_select="pixelutils"
3117 frei0r_filter_deps="frei0r dlopen"
3118 frei0r_src_filter_deps="frei0r dlopen"
3119 fspp_filter_deps="gpl"
3120 geq_filter_deps="gpl"
3121 histeq_filter_deps="gpl"
3122 hqdn3d_filter_deps="gpl"
3123 interlace_filter_deps="gpl"
3124 kerndeint_filter_deps="gpl"
3125 ladspa_filter_deps="ladspa dlopen"
3126 mcdeint_filter_deps="avcodec gpl"
3127 movie_filter_deps="avcodec avformat"
3128 mpdecimate_filter_deps="gpl"
3129 mpdecimate_filter_select="pixelutils"
3130 mptestsrc_filter_deps="gpl"
3131 negate_filter_deps="lut_filter"
3132 nnedi_filter_deps="gpl"
3133 ocr_filter_deps="libtesseract"
3134 ocv_filter_deps="libopencv"
3135 owdenoise_filter_deps="gpl"
3136 pan_filter_deps="swresample"
3137 perspective_filter_deps="gpl"
3138 phase_filter_deps="gpl"
3139 pp7_filter_deps="gpl"
3140 pp_filter_deps="gpl postproc"
3141 pullup_filter_deps="gpl"
3142 removelogo_filter_deps="avcodec avformat swscale"
3143 repeatfields_filter_deps="gpl"
3144 resample_filter_deps="avresample"
3145 rubberband_filter_deps="librubberband"
3146 sab_filter_deps="gpl swscale"
3147 scale2ref_filter_deps="swscale"
3148 scale_filter_deps="swscale"
3149 scale_qsv_filter_deps="libmfx"
3150 select_filter_select="pixelutils"
3151 showcqt_filter_deps="avcodec avformat swscale"
3152 showcqt_filter_select="fft"
3153 showfreqs_filter_deps="avcodec"
3154 showfreqs_filter_select="fft"
3155 showspectrum_filter_deps="avcodec"
3156 showspectrum_filter_select="fft"
3157 showspectrumpic_filter_deps="avcodec"
3158 showspectrumpic_filter_select="fft"
3159 smartblur_filter_deps="gpl swscale"
3160 sofalizer_filter_deps="netcdf avcodec"
3161 sofalizer_filter_select="fft"
3162 spectrumsynth_filter_deps="avcodec"
3163 spectrumsynth_filter_select="fft"
3164 spp_filter_deps="gpl avcodec"
3165 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3166 stereo3d_filter_deps="gpl"
3167 subtitles_filter_deps="avformat avcodec libass"
3168 super2xsai_filter_deps="gpl"
3169 pixfmts_super2xsai_test_deps="super2xsai_filter"
3170 tinterlace_filter_deps="gpl"
3171 tinterlace_merge_test_deps="tinterlace_filter"
3172 tinterlace_pad_test_deps="tinterlace_filter"
3173 uspp_filter_deps="gpl avcodec"
3174 vaguedenoiser_filter_deps="gpl"
3175 vidstabdetect_filter_deps="libvidstab"
3176 vidstabtransform_filter_deps="libvidstab"
3177 zmq_filter_deps="libzmq"
3178 zoompan_filter_deps="swscale"
3179 zscale_filter_deps="libzimg"
3180 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3181
3182 # examples
3183 avio_dir_cmd_deps="avformat avutil"
3184 avio_reading_deps="avformat avcodec avutil"
3185 decoding_encoding_example_deps="avcodec avformat avutil"
3186 demuxing_decoding_example_deps="avcodec avformat avutil"
3187 extract_mvs_example_deps="avcodec avformat avutil"
3188 filter_audio_example_deps="avfilter avutil"
3189 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3190 filtering_video_example_deps="avfilter avcodec avformat avutil"
3191 http_multiclient_example_deps="avformat avutil fork"
3192 metadata_example_deps="avformat avutil"
3193 muxing_example_deps="avcodec avformat avutil swscale"
3194 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3195 remuxing_example_deps="avcodec avformat avutil"
3196 resampling_audio_example_deps="avutil swresample"
3197 scaling_video_example_deps="avutil swscale"
3198 transcode_aac_example_deps="avcodec avformat swresample"
3199 transcoding_example_deps="avfilter avcodec avformat avutil"
3200
3201 # libraries, in linking order
3202 avcodec_deps="avutil"
3203 avdevice_deps="avformat avcodec avutil"
3204 avfilter_deps="avutil"
3205 avformat_deps="avcodec avutil"
3206 avresample_deps="avutil"
3207 postproc_deps="avutil gpl"
3208 swresample_deps="avutil"
3209 swscale_deps="avutil"
3210
3211 # programs
3212 ffmpeg_deps="avcodec avfilter avformat swresample"
3213 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3214                null_filter
3215                trim_filter"
3216 ffplay_deps="avcodec avformat swscale swresample sdl2"
3217 ffplay_libs='$sdl2_libs'
3218 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3219 ffprobe_deps="avcodec avformat"
3220 ffserver_deps="avformat fork sarestart"
3221 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3222
3223 # documentation
3224 podpages_deps="perl"
3225 manpages_deps="perl pod2man"
3226 htmlpages_deps="perl"
3227 htmlpages_deps_any="makeinfo_html texi2html"
3228 txtpages_deps="perl makeinfo"
3229 doc_deps_any="manpages htmlpages podpages txtpages"
3230
3231 # default parameters
3232
3233 logfile="config.log"
3234
3235 # installation paths
3236 prefix_default="/usr/local"
3237 bindir_default='${prefix}/bin'
3238 datadir_default='${prefix}/share/ffmpeg'
3239 docdir_default='${prefix}/share/doc/ffmpeg'
3240 incdir_default='${prefix}/include'
3241 libdir_default='${prefix}/lib'
3242 mandir_default='${prefix}/share/man'
3243
3244 # toolchain
3245 ar_default="ar"
3246 cc_default="gcc"
3247 cxx_default="g++"
3248 host_cc_default="gcc"
3249 cp_f="cp -f"
3250 doxygen_default="doxygen"
3251 install="install"
3252 ln_s_default="ln -s -f"
3253 nm_default="nm -g"
3254 objformat="elf"
3255 pkg_config_default=pkg-config
3256 ranlib_default="ranlib"
3257 strip_default="strip"
3258 version_script='--version-script'
3259 yasmexe_default="yasm"
3260 windres_default="windres"
3261
3262 # OS
3263 target_os_default=$(tolower $(uname -s))
3264 host_os=$target_os_default
3265
3266 # machine
3267 if test "$target_os_default" = aix; then
3268     arch_default=$(uname -p)
3269     strip_default="strip -X32_64"
3270 else
3271     arch_default=$(uname -m)
3272 fi
3273 cpu="generic"
3274 intrinsics="none"
3275
3276 # configurable options
3277 enable $PROGRAM_LIST
3278 enable $DOCUMENT_LIST
3279 enable $EXAMPLE_LIST
3280 enable $(filter_out avresample $LIBRARY_LIST)
3281 enable stripping
3282
3283 enable asm
3284 enable debug
3285 enable doc
3286 enable faan faandct faanidct
3287 enable optimizations
3288 enable runtime_cpudetect
3289 enable safe_bitstream_reader
3290 enable static
3291 enable swscale_alpha
3292 enable valgrind_backtrace
3293
3294 sws_max_filter_size_default=256
3295 set_default sws_max_filter_size
3296
3297 # build settings
3298 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3299 LIBPREF="lib"
3300 LIBSUF=".a"
3301 FULLNAME='$(NAME)$(BUILDSUF)'
3302 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3303 SLIBPREF="lib"
3304 SLIBSUF=".so"
3305 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3306 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3307 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3308 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3309 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3310 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3311 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3312
3313 asflags_filter=echo
3314 cflags_filter=echo
3315 ldflags_filter=echo
3316
3317 AS_C='-c'
3318 AS_O='-o $@'
3319 CC_C='-c'
3320 CC_E='-E -o $@'
3321 CC_O='-o $@'
3322 CXX_C='-c'
3323 CXX_O='-o $@'
3324 OBJCC_C='-c'
3325 OBJCC_E='-E -o $@'
3326 OBJCC_O='-o $@'
3327 LD_O='-o $@'
3328 LD_LIB='-l%'
3329 LD_PATH='-L'
3330 HOSTCC_C='-c'
3331 HOSTCC_E='-E -o $@'
3332 HOSTCC_O='-o $@'
3333 HOSTLD_O='-o $@'
3334
3335 host_libs='-lm'
3336 host_cflags_filter=echo
3337 host_ldflags_filter=echo
3338
3339 target_path='$(CURDIR)'
3340
3341 # since the object filename is not given with the -MM flag, the compiler
3342 # is only able to print the basename, and we must add the path ourselves
3343 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3344 DEPFLAGS='-MM'
3345
3346 # find source path
3347 if test -f configure; then
3348     source_path=.
3349 else
3350     source_path=$(cd $(dirname "$0"); pwd)
3351     case "$source_path" in
3352         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3353     esac
3354     test -e "$source_path/config.h" &&
3355         die "Out of tree builds are impossible with config.h in source dir."
3356 fi
3357
3358 for v in "$@"; do
3359     r=${v#*=}
3360     l=${v%"$r"}
3361     r=$(sh_quote "$r")
3362     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3363 done
3364
3365 find_things(){
3366     thing=$1
3367     pattern=$2
3368     file=$source_path/$3
3369     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3370 }
3371
3372 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3373 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3374 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3375 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3376 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3377 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3378 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3379 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3380 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3381
3382 find_things_extern(){
3383     thing=$1
3384     pattern=$2
3385     file=$source_path/$3
3386     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3387 }
3388
3389 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3390 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3391
3392 ALL_COMPONENTS="
3393     $BSF_LIST
3394     $DECODER_LIST
3395     $DEMUXER_LIST
3396     $ENCODER_LIST
3397     $FILTER_LIST
3398     $HWACCEL_LIST
3399     $INDEV_LIST
3400     $MUXER_LIST
3401     $OUTDEV_LIST
3402     $PARSER_LIST
3403     $PROTOCOL_LIST
3404 "
3405
3406 for n in $COMPONENT_LIST; do
3407     v=$(toupper ${n%s})_LIST
3408     eval enable \$$v
3409     eval ${n}_if_any="\$$v"
3410 done
3411
3412 enable $ARCH_EXT_LIST
3413
3414 die_unknown(){
3415     echo "Unknown option \"$1\"."
3416     echo "See $0 --help for available options."
3417     exit 1
3418 }
3419
3420 print_in_columns() {
3421     cols=$(expr $ncols / 24)
3422     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3423 }
3424
3425 show_list() {
3426     suffix=_$1
3427     shift
3428     echo $* | sed s/$suffix//g | print_in_columns
3429     exit 0
3430 }
3431
3432 rand_list(){
3433     IFS=', '
3434     set -- $*
3435     unset IFS
3436     for thing; do
3437         comp=${thing%:*}
3438         prob=${thing#$comp}
3439         prob=${prob#:}
3440         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3441         echo "prob ${prob:-0.5}"
3442         printf '%s\n' $comp
3443     done
3444 }
3445
3446 do_random(){
3447     action=$1
3448     shift
3449     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3450     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3451 }
3452
3453 for opt do
3454     optval="${opt#*=}"
3455     case "$opt" in
3456         --extra-ldflags=*)
3457             add_ldflags $optval
3458         ;;
3459         --extra-ldexeflags=*)
3460             add_ldexeflags $optval
3461         ;;
3462         --extra-ldlibflags=*)
3463             add_ldlibflags $optval
3464         ;;
3465         --extra-libs=*)
3466             add_extralibs $optval
3467         ;;
3468         --disable-devices)
3469             disable $INDEV_LIST $OUTDEV_LIST
3470         ;;
3471         --enable-debug=*)
3472             debuglevel="$optval"
3473         ;;
3474         --disable-programs)
3475             disable $PROGRAM_LIST
3476         ;;
3477         --disable-everything)
3478             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3479         ;;
3480         --disable-all)
3481             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3482             disable $LIBRARY_LIST $PROGRAM_LIST doc
3483             enable avutil
3484         ;;
3485         --enable-random|--disable-random)
3486             action=${opt%%-random}
3487             do_random ${action#--} $COMPONENT_LIST
3488         ;;
3489         --enable-random=*|--disable-random=*)
3490             action=${opt%%-random=*}
3491             do_random ${action#--} $optval
3492         ;;
3493         --enable-*=*|--disable-*=*)
3494             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3495             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3496             eval list=\$$(toupper $thing)_LIST
3497             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3498             list=$(filter "$name" $list)
3499             [ "$list" = "" ] && warn "Option $opt did not match anything"
3500             $action $list
3501         ;;
3502         --enable-?*|--disable-?*)
3503             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3504             if is_in $option $COMPONENT_LIST; then
3505                 test $action = disable && action=unset
3506                 eval $action \$$(toupper ${option%s})_LIST
3507             elif is_in $option $CMDLINE_SELECT; then
3508                 $action $option
3509             else
3510                 die_unknown $opt
3511             fi
3512         ;;
3513         --list-*)
3514             NAME="${opt#--list-}"
3515             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3516             NAME=${NAME%s}
3517             eval show_list $NAME \$$(toupper $NAME)_LIST
3518         ;;
3519         --help|-h) show_help
3520         ;;
3521         --fatal-warnings) enable fatal_warnings
3522         ;;
3523         *)
3524             optname="${opt%%=*}"
3525             optname="${optname#--}"
3526             optname=$(echo "$optname" | sed 's/-/_/g')
3527             if is_in $optname $CMDLINE_SET; then
3528                 eval $optname='$optval'
3529             elif is_in $optname $CMDLINE_APPEND; then
3530                 append $optname "$optval"
3531             else
3532                 die_unknown $opt
3533             fi
3534         ;;
3535     esac
3536 done
3537
3538 for e in $env; do
3539     eval "export $e"
3540 done
3541
3542 # Mark specifically enabled, but normally autodetected libraries as requested.
3543 for lib in $AUTODETECT_LIBS; do
3544     enabled $lib && request $lib
3545 done
3546
3547 # Enable platform codecs by default.
3548 enable_weak audiotoolbox
3549
3550 # Enable hwaccels by default.
3551 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3552 enable_weak xlib
3553
3554 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3555
3556 disabled logging && logfile=/dev/null
3557
3558 # Disable all the library-specific components if the library itself
3559 # is disabled, see AVCODEC_LIST and following _LIST variables.
3560
3561 disable_components(){
3562     disabled ${1} && disable $(
3563         eval components="\$$(toupper ${1})_COMPONENTS"
3564         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3565     )
3566 }
3567
3568 map 'disable_components $v' $LIBRARY_LIST
3569
3570 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3571 set >> $logfile
3572
3573 test -n "$valgrind" && toolchain="valgrind-memcheck"
3574
3575 case "$toolchain" in
3576     *-asan)
3577         cc_default="${toolchain%-asan}"
3578         add_cflags  -fsanitize=address
3579         add_ldflags -fsanitize=address
3580     ;;
3581     *-msan)
3582         cc_default="${toolchain%-msan}"
3583         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3584         add_ldflags -fsanitize=memory
3585     ;;
3586     *-tsan)
3587         cc_default="${toolchain%-tsan}"
3588         add_cflags  -fsanitize=thread -fPIE
3589         add_ldflags -fsanitize=thread -pie
3590         case "$toolchain" in
3591             gcc-tsan)
3592                 add_cflags  -fPIC
3593                 add_ldflags -fPIC
3594                 ;;
3595         esac
3596     ;;
3597     *-usan)
3598         cc_default="${toolchain%-usan}"
3599         add_cflags  -fsanitize=undefined
3600         add_ldflags -fsanitize=undefined
3601     ;;
3602     valgrind-*)
3603         target_exec_default="valgrind"
3604         case "$toolchain" in
3605             valgrind-massif)
3606                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3607                 ;;
3608             valgrind-memcheck)
3609                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3610                 ;;
3611         esac
3612     ;;
3613     msvc)
3614         # Check whether the current MSVC version needs the C99 converter.
3615         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3616         # support enough of C99 to build ffmpeg. Default to the new
3617         # behaviour if the regexp was unable to match anything, since this
3618         # successfully parses the version number of existing supported
3619         # versions that require the converter (MSVC 2010 and 2012).
3620         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3621         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3622             cc_default="cl"
3623         else
3624             cc_default="c99wrap cl"
3625         fi
3626         ld_default="$source_path/compat/windows/mslink"
3627         nm_default="dumpbin -symbols"
3628         ar_default="lib"
3629         case "$arch" in
3630         arm*)
3631             as_default="armasm"
3632             ;;
3633         esac
3634         target_os_default="win32"
3635         # Use a relative path for TMPDIR. This makes sure all the
3636         # ffconf temp files are written with a relative path, avoiding
3637         # issues with msys/win32 path conversion for MSVC parameters
3638         # such as -Fo<file> or -out:<file>.
3639         TMPDIR=.
3640     ;;
3641     icl)
3642         cc_default="icl"
3643         ld_default="xilink"
3644         nm_default="dumpbin -symbols"
3645         ar_default="xilib"
3646         target_os_default="win32"
3647         TMPDIR=.
3648     ;;
3649     gcov)
3650         add_cflags  -fprofile-arcs -ftest-coverage
3651         add_ldflags -fprofile-arcs -ftest-coverage
3652     ;;
3653     llvm-cov)
3654         add_cflags -fprofile-arcs -ftest-coverage
3655         add_ldflags --coverage
3656     ;;
3657     hardened)
3658         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3659         add_cflags   -fno-strict-overflow -fstack-protector-all
3660         add_ldflags  -Wl,-z,relro -Wl,-z,now
3661         add_cflags   -fPIE
3662         add_ldexeflags -fPIE -pie
3663     ;;
3664     ?*)
3665         die "Unknown toolchain $toolchain"
3666     ;;
3667 esac
3668
3669 test -n "$cross_prefix" && enable cross_compile
3670
3671 if enabled cross_compile; then
3672     test -n "$arch" && test -n "$target_os" ||
3673         die "Must specify target arch and OS when cross-compiling"
3674 fi
3675
3676 ar_default="${cross_prefix}${ar_default}"
3677 cc_default="${cross_prefix}${cc_default}"
3678 cxx_default="${cross_prefix}${cxx_default}"
3679 nm_default="${cross_prefix}${nm_default}"
3680 pkg_config_default="${cross_prefix}${pkg_config_default}"
3681 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3682     ranlib_default="${cross_prefix}${ranlib_default} -D"
3683 else
3684     ranlib_default="${cross_prefix}${ranlib_default}"
3685 fi
3686 strip_default="${cross_prefix}${strip_default}"
3687 windres_default="${cross_prefix}${windres_default}"
3688
3689 sysinclude_default="${sysroot}/usr/include"
3690
3691 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3692     target_exec target_os yasmexe
3693 enabled cross_compile || host_cc_default=$cc
3694 set_default host_cc
3695
3696 pkg_config_fail_message=""
3697 if ! $pkg_config --version >/dev/null 2>&1; then
3698     warn "$pkg_config not found, library detection may fail."
3699     pkg_config=false
3700 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3701     pkg_config_fail_message="
3702 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3703 fi
3704
3705 if test $doxygen != $doxygen_default && \
3706   ! $doxygen --version >/dev/null 2>&1; then
3707     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3708 fi
3709
3710 exesuf() {
3711     case $1 in
3712         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3713     esac
3714 }
3715
3716 EXESUF=$(exesuf $target_os)
3717 HOSTEXESUF=$(exesuf $host_os)
3718
3719 # set temporary file name
3720 : ${TMPDIR:=$TEMPDIR}
3721 : ${TMPDIR:=$TMP}
3722 : ${TMPDIR:=/tmp}
3723
3724 if [ -n "$tempprefix" ] ; then
3725     mktemp(){
3726         echo $tempprefix.${HOSTNAME}.${UID}
3727     }
3728 elif ! check_cmd mktemp -u XXXXXX; then
3729     # simple replacement for missing mktemp
3730     # NOT SAFE FOR GENERAL USE
3731     mktemp(){
3732         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3733     }
3734 fi
3735
3736 tmpfile(){
3737     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3738         (set -C; exec > $tmp) 2>/dev/null ||
3739         die "Unable to create temporary file in $TMPDIR."
3740     append TMPFILES $tmp
3741     eval $1=$tmp
3742 }
3743
3744 trap 'rm -f -- $TMPFILES' EXIT
3745
3746 tmpfile TMPASM .asm
3747 tmpfile TMPC   .c
3748 tmpfile TMPCPP .cpp
3749 tmpfile TMPE   $EXESUF
3750 tmpfile TMPH   .h
3751 tmpfile TMPM   .m
3752 tmpfile TMPO   .o
3753 tmpfile TMPS   .S
3754 tmpfile TMPSH  .sh
3755 tmpfile TMPV   .ver
3756
3757 unset -f mktemp
3758
3759 chmod +x $TMPE
3760
3761 # make sure we can execute files in $TMPDIR
3762 cat > $TMPSH 2>> $logfile <<EOF
3763 #! /bin/sh
3764 EOF
3765 chmod +x $TMPSH >> $logfile 2>&1
3766 if ! $TMPSH >> $logfile 2>&1; then
3767     cat <<EOF
3768 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3769 variable to another directory and make sure that it is not mounted noexec.
3770 EOF
3771     die "Sanity test failed."
3772 fi
3773
3774 armasm_flags(){
3775     for flag; do
3776         case $flag in
3777             # Filter out MSVC cl.exe options from cflags that shouldn't
3778             # be passed to gas-preprocessor
3779             -M[TD]*)                                            ;;
3780             *)                  echo $flag                      ;;
3781         esac
3782    done
3783 }
3784
3785 ccc_flags(){
3786     for flag; do
3787         case $flag in
3788             -std=c99)           echo -c99                       ;;
3789             -mcpu=*)            echo -arch ${flag#*=}           ;;
3790             -mieee)             echo -ieee                      ;;
3791             -O*|-fast)          echo $flag                      ;;
3792             -fno-math-errno)    echo -assume nomath_errno       ;;
3793             -g)                 echo -g3                        ;;
3794             -Wall)              echo -msg_enable level2         ;;
3795             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3796             -Wl,*)              echo $flag                      ;;
3797             -f*|-W*)                                            ;;
3798             *)                  echo $flag                      ;;
3799         esac
3800    done
3801 }
3802
3803 cparser_flags(){
3804     for flag; do
3805         case $flag in
3806             -Wno-switch)             echo -Wno-switch-enum ;;
3807             -Wno-format-zero-length) ;;
3808             -Wdisabled-optimization) ;;
3809             -Wno-pointer-sign)       echo -Wno-other ;;
3810             *)                       echo $flag ;;
3811         esac
3812     done
3813 }
3814
3815 msvc_common_flags(){
3816     for flag; do
3817         case $flag in
3818             # In addition to specifying certain flags under the compiler
3819             # specific filters, they must be specified here as well or else the
3820             # generic catch all at the bottom will print the original flag.
3821             -Wall)                ;;
3822             -std=c99)             ;;
3823             # Common flags
3824             -fomit-frame-pointer) ;;
3825             -g)                   echo -Z7 ;;
3826             -fno-math-errno)      ;;
3827             -fno-common)          ;;
3828             -fno-signed-zeros)    ;;
3829             -fPIC)                ;;
3830             -mthumb)              ;;
3831             -march=*)             ;;
3832             -lz)                  echo zlib.lib ;;
3833             -lavifil32)           echo vfw32.lib ;;
3834             -lavicap32)           echo vfw32.lib user32.lib ;;
3835             -lx264)               echo libx264.lib ;;
3836             -l*)                  echo ${flag#-l}.lib ;;
3837             -LARGEADDRESSAWARE)   echo $flag ;;
3838             -L*)                  echo -libpath:${flag#-L} ;;
3839             *)                    echo $flag ;;
3840         esac
3841     done
3842 }
3843
3844 msvc_flags(){
3845     msvc_common_flags "$@"
3846     for flag; do
3847         case $flag in
3848             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3849                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3850                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3851                                        -wd4307 \
3852                                        -wd4273 -wd4554 -wd4701 ;;
3853         esac
3854     done
3855 }
3856
3857 icl_flags(){
3858     msvc_common_flags "$@"
3859     for flag; do
3860         case $flag in
3861             # Despite what Intel's documentation says -Wall, which is supported
3862             # on Windows, does enable remarks so disable them here.
3863             -Wall)                echo $flag -Qdiag-disable:remark ;;
3864             -std=c99)             echo -Qstd=c99 ;;
3865             -flto)                echo -ipo ;;
3866         esac
3867     done
3868 }
3869
3870 icc_flags(){
3871     for flag; do
3872         case $flag in
3873             -flto)                echo -ipo ;;
3874             *)                    echo $flag ;;
3875         esac
3876     done
3877 }
3878
3879 pgi_flags(){
3880     for flag; do
3881         case $flag in
3882             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3883             -fomit-frame-pointer) echo -Mnoframe ;;
3884             -g)                   echo -gopt ;;
3885             *)                    echo $flag ;;
3886         esac
3887     done
3888 }
3889
3890 suncc_flags(){
3891     for flag; do
3892         case $flag in
3893             -march=*|-mcpu=*)
3894                 case "${flag#*=}" in
3895                     native)                   echo -xtarget=native       ;;
3896                     v9|niagara)               echo -xarch=sparc          ;;
3897                     ultrasparc)               echo -xarch=sparcvis       ;;
3898                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3899                     i586|pentium)             echo -xchip=pentium        ;;
3900                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3901                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3902                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3903                     pentium4*)          echo -xtarget=pentium4           ;;
3904                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3905                     *-sse3)             echo -xarch=sse3                 ;;
3906                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3907                     bonnell)                   echo -xarch=ssse3         ;;
3908                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3909                     westmere)                  echo -xtarget=westmere    ;;
3910                     silvermont)                echo -xarch=sse4_2        ;;
3911                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3912                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3913                                                echo -xarch=avx           ;;
3914                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3915                     btver1)                    echo -xarch=amdsse4a      ;;
3916                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3917                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3918                     k8|opteron|athlon64|athlon-fx)
3919                                                echo -xarch=sse2a         ;;
3920                     athlon*)                   echo -xarch=pentium_proa  ;;
3921                 esac
3922                 ;;
3923             -std=c99)             echo -xc99              ;;
3924             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3925             -fPIC)                echo -KPIC -xcode=pic32 ;;
3926             -W*,*)                echo $flag              ;;
3927             -f*-*|-W*|-mimpure-text)                      ;;
3928             -shared)              echo -G                 ;;
3929             *)                    echo $flag              ;;
3930         esac
3931     done
3932 }
3933
3934 tms470_flags(){
3935     for flag; do
3936         case $flag in
3937             -march=*|-mcpu=*)
3938                 case "${flag#*=}" in
3939                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3940                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3941                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3942                     armv6*|arm11*)          echo -mv=6   ;;
3943                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3944                                             echo -mv=5e  ;;
3945                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3946                 esac
3947                 ;;
3948             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3949             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3950             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3951             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3952             -msoft-float)   echo --float_support=vfplib       ;;
3953             -O[0-3]|-mf=*)  echo $flag                        ;;
3954             -g)             echo -g -mn                       ;;
3955             -pds=*)         echo $flag                        ;;
3956             -D*|-I*)        echo $flag                        ;;
3957             --gcc|--abi=*)  echo $flag                        ;;
3958             -me)            echo $flag                        ;;
3959         esac
3960     done
3961 }
3962
3963 probe_cc(){
3964     pfx=$1
3965     _cc=$2
3966     first=$3
3967
3968     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3969     unset _ld_o _ldflags _ld_lib _ld_path
3970     unset _depflags _DEPCMD _DEPFLAGS
3971     _flags_filter=echo
3972
3973     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3974         true # no-op to avoid reading stdin in following checks
3975     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3976         _type=llvm_gcc
3977         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3978         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3979         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3980         _cflags_speed='-O3'
3981         _cflags_size='-Os'
3982     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3983         _type=gcc
3984         gcc_version=$($_cc --version | head -n1)
3985         gcc_basever=$($_cc -dumpversion)
3986         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3987         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3988         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3989         case $gcc_basever in
3990             2) ;;
3991             2.*) ;;
3992             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3993         esac
3994         if [ "$first" = true ]; then
3995             case $gcc_basever in
3996                 4.2*)
3997                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3998             esac
3999         fi
4000         _cflags_speed='-O3'
4001         _cflags_size='-Os'
4002     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4003         _type=icc
4004         _ident=$($_cc --version | head -n1)
4005         _depflags='-MMD'
4006         _cflags_speed='-O3'
4007         _cflags_size='-Os'
4008         _cflags_noopt='-O1'
4009         _flags_filter=icc_flags
4010     elif $_cc -v 2>&1 | grep -q xlc; then
4011         _type=xlc
4012         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4013         _cflags_speed='-O5'
4014         _cflags_size='-O5 -qcompact'
4015     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4016         _type=ccc
4017         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4018         _DEPFLAGS='-M'
4019         _cflags_speed='-fast'
4020         _cflags_size='-O1'
4021         _flags_filter=ccc_flags
4022     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4023         test -d "$sysroot" || die "No valid sysroot specified."
4024         _type=armcc
4025         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4026         armcc_conf="$PWD/armcc.conf"
4027         $_cc --arm_linux_configure                 \
4028              --arm_linux_config_file="$armcc_conf" \
4029              --configure_sysroot="$sysroot"        \
4030              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4031              die "Error creating armcc configuration file."
4032         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4033         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4034         as_default="${cross_prefix}gcc"
4035         _depflags='-MMD'
4036         _cflags_speed='-O3'
4037         _cflags_size='-Os'
4038     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4039         _type=tms470
4040         _ident=$($_cc -version | head -n1 | tr -s ' ')
4041         _flags='--gcc --abi=eabi -me'
4042         _cc_e='-ppl -fe=$@'
4043         _cc_o='-fe=$@'
4044         _depflags='-ppa -ppd=$(@:.o=.d)'
4045         _cflags_speed='-O3 -mf=5'
4046         _cflags_size='-O3 -mf=2'
4047         _flags_filter=tms470_flags
4048     elif $_cc -v 2>&1 | grep -q clang; then
4049         _type=clang
4050         _ident=$($_cc --version 2>/dev/null | head -n1)
4051         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4052         _cflags_speed='-O3'
4053         _cflags_size='-Os'
4054     elif $_cc -V 2>&1 | grep -q Sun; then
4055         _type=suncc
4056         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4057         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4058         _DEPFLAGS='-xM1 -xc99'
4059         _ldflags='-std=c99'
4060         _cflags_speed='-O5'
4061         _cflags_size='-O5 -xspace'
4062         _flags_filter=suncc_flags
4063     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4064         _type=pathscale
4065         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4066         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4067         _cflags_speed='-O2'
4068         _cflags_size='-Os'
4069         _flags_filter='filter_out -Wdisabled-optimization'
4070     elif $_cc -v 2>&1 | grep -q Open64; then
4071         _type=open64
4072         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4073         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4074         _cflags_speed='-O2'
4075         _cflags_size='-Os'
4076         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4077     elif $_cc -V 2>&1 | grep -q Portland; then
4078         _type=pgi
4079         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4080         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4081         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4082         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4083         _cflags_noopt="-O"
4084         _flags_filter=pgi_flags
4085     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4086         _type=armasm
4087         _ident=$($_cc | head -n1)
4088         # 4509: "This form of conditional instruction is deprecated"
4089         _flags="-nologo -ignore 4509"
4090         _flags_filter=armasm_flags
4091     elif $_cc 2>&1 | grep -q Intel; then
4092         _type=icl
4093         _ident=$($_cc 2>&1 | head -n1)
4094         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4095         # Not only is O3 broken on 13.x+ but it is slower on all previous
4096         # versions (tested) as well.
4097         _cflags_speed="-O2"
4098         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4099         if $_cc 2>&1 | grep -q Linker; then
4100             _ld_o='-out:$@'
4101         else
4102             _ld_o='-Fe$@'
4103         fi
4104         _cc_o='-Fo$@'
4105         _cc_e='-P'
4106         _flags_filter=icl_flags
4107         _ld_lib='lib%.a'
4108         _ld_path='-libpath:'
4109         # -Qdiag-error to make icl error when seeing certain unknown arguments
4110         _flags='-nologo -Qdiag-error:4044,10157'
4111         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4112         # with MSVC which enables it by default.
4113         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4114         disable stripping
4115     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4116         # lld can emulate multiple different linkers; in ms link.exe mode,
4117         # the -? parameter gives the help output which contains an identifyable
4118         # string, while it gives an error in other modes.
4119         _type=lld-link
4120         # The link.exe mode doesn't have a switch for getting the version,
4121         # but we can force it back to gnu mode and get the version from there.
4122         _ident=$($_cc -flavor gnu --version)
4123         _ld_o='-out:$@'
4124         _flags_filter=msvc_flags
4125         _ld_lib='lib%.a'
4126         _ld_path='-libpath:'
4127     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4128         _type=msvc
4129         _ident=$($_cc 2>&1 | head -n1)
4130         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4131         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4132         _cflags_speed="-O2"
4133         _cflags_size="-O1"
4134         if $_cc -nologo- 2>&1 | grep -q Linker; then
4135             _ld_o='-out:$@'
4136         else
4137             _ld_o='-Fe$@'
4138         fi
4139         _cc_o='-Fo$@'
4140         _cc_e='-P -Fi$@'
4141         _flags_filter=msvc_flags
4142         _ld_lib='lib%.a'
4143         _ld_path='-libpath:'
4144         _flags='-nologo'
4145         disable stripping
4146     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4147         _type=cparser
4148         _ident=$($_cc --version | head -n1)
4149         _depflags='-MMD'
4150         _cflags_speed='-O4'
4151         _cflags_size='-O2'
4152         _flags_filter=cparser_flags
4153     fi
4154
4155     eval ${pfx}_type=\$_type
4156     eval ${pfx}_ident=\$_ident
4157 }
4158
4159 set_ccvars(){
4160     eval ${1}_C=\${_cc_c-\${${1}_C}}
4161     eval ${1}_E=\${_cc_e-\${${1}_E}}
4162     eval ${1}_O=\${_cc_o-\${${1}_O}}
4163
4164     if [ -n "$_depflags" ]; then
4165         eval ${1}_DEPFLAGS=\$_depflags
4166     else
4167         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4168         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4169         eval DEP${1}FLAGS=\$_flags
4170     fi
4171 }
4172
4173 probe_cc cc "$cc" "true"
4174 cflags_filter=$_flags_filter
4175 cflags_speed=$_cflags_speed
4176 cflags_size=$_cflags_size
4177 cflags_noopt=$_cflags_noopt
4178 add_cflags $_flags $_cflags
4179 cc_ldflags=$_ldflags
4180 set_ccvars CC
4181
4182 probe_cc hostcc "$host_cc"
4183 host_cflags_filter=$_flags_filter
4184 add_host_cflags  $_flags $_cflags
4185 set_ccvars HOSTCC
4186
4187 test -n "$cc_type" && enable $cc_type ||
4188     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4189
4190 : ${as_default:=$cc}
4191 : ${objcc_default:=$cc}
4192 : ${dep_cc_default:=$cc}
4193 : ${ld_default:=$cc}
4194 : ${host_ld_default:=$host_cc}
4195 set_default ar as objcc dep_cc ld ln_s host_ld windres
4196
4197 probe_cc as "$as"
4198 asflags_filter=$_flags_filter
4199 add_asflags $_flags $_cflags
4200 set_ccvars AS
4201
4202 probe_cc objcc "$objcc"
4203 objcflags_filter=$_flags_filter
4204 add_objcflags $_flags $_cflags
4205 set_ccvars OBJC
4206
4207 probe_cc ld "$ld"
4208 ldflags_filter=$_flags_filter
4209 add_ldflags $_flags $_ldflags
4210 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4211 LD_O=${_ld_o-$LD_O}
4212 LD_LIB=${_ld_lib-$LD_LIB}
4213 LD_PATH=${_ld_path-$LD_PATH}
4214
4215 probe_cc hostld "$host_ld"
4216 host_ldflags_filter=$_flags_filter
4217 add_host_ldflags $_flags $_ldflags
4218 HOSTLD_O=${_ld_o-$HOSTLD_O}
4219
4220 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4221     probe_cc depcc "$dep_cc"
4222     CCDEP=${_DEPCMD:-$DEPCMD}
4223     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4224     DEPCCFLAGS=$_flags
4225 fi
4226
4227 if $ar 2>&1 | grep -q Microsoft; then
4228     arflags="-nologo"
4229     ar_o='-out:$@'
4230 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4231     arflags="rq"
4232     ar_o='$@'
4233 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4234     arflags='-Xany -r -c'
4235     ar_o='$@'
4236 elif $ar 2>&1 | grep -q "\[D\] "; then
4237     arflags="rcD"
4238     ar_o='$@'
4239 else
4240     arflags="rc"
4241     ar_o='$@'
4242 fi
4243
4244 add_cflags $extra_cflags
4245 add_cxxflags $extra_cxxflags
4246 add_objcflags $extra_objcflags
4247 add_asflags $extra_cflags
4248
4249 if test -n "$sysroot"; then
4250     case "$cc_type" in
4251         gcc|llvm_gcc|clang)
4252             add_cppflags --sysroot="$sysroot"
4253             add_ldflags --sysroot="$sysroot"
4254 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4255             add_cppflags -isysroot "$sysroot"
4256             add_ldflags -isysroot "$sysroot"
4257         ;;
4258         tms470)
4259             add_cppflags -I"$sysinclude"
4260             add_ldflags  --sysroot="$sysroot"
4261         ;;
4262     esac
4263 fi
4264
4265 if test "$cpu" = host; then
4266     enabled cross_compile &&
4267         die "--cpu=host makes no sense when cross-compiling."
4268
4269     case "$cc_type" in
4270         gcc|llvm_gcc)
4271             check_native(){
4272                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4273                 sed -n "/cc1.*$1=/{
4274                             s/.*$1=\\([^ ]*\\).*/\\1/
4275                             p
4276                             q
4277                         }" $TMPE
4278             }
4279             cpu=$(check_native -march || check_native -mcpu)
4280         ;;
4281         clang)
4282             check_native(){
4283                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4284                 sed -n "/cc1.*-target-cpu /{
4285                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4286                             p
4287                             q
4288                         }" $TMPE
4289             }
4290             cpu=$(check_native -march)
4291         ;;
4292     esac
4293
4294     test "${cpu:-host}" = host &&
4295         die "--cpu=host not supported with compiler $cc"
4296 fi
4297
4298 # Deal with common $arch aliases
4299 case "$arch" in
4300     aarch64|arm64)
4301         arch="aarch64"
4302     ;;
4303     arm*|iPad*|iPhone*)
4304         arch="arm"
4305     ;;
4306     mips*|IP*)
4307         case "$arch" in
4308         *el)
4309             add_cppflags -EL
4310             add_ldflags -EL
4311         ;;
4312         *eb)
4313             add_cppflags -EB
4314             add_ldflags -EB
4315         ;;
4316         esac
4317         arch="mips"
4318     ;;
4319     parisc*|hppa*)
4320         arch="parisc"
4321     ;;
4322     "Power Macintosh"|ppc*|powerpc*)
4323         arch="ppc"
4324     ;;
4325     s390|s390x)
4326         arch="s390"
4327     ;;
4328     sh4|sh)
4329         arch="sh4"
4330     ;;
4331     sun4*|sparc*)
4332         arch="sparc"
4333     ;;
4334     tilegx|tile-gx)
4335         arch="tilegx"
4336     ;;
4337     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4338         arch="x86"
4339     ;;
4340 esac
4341
4342 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4343 enable $arch
4344
4345 # Add processor-specific flags
4346 if enabled aarch64; then
4347
4348     case $cpu in
4349         armv*)
4350             cpuflags="-march=$cpu"
4351         ;;
4352         *)
4353             cpuflags="-mcpu=$cpu"
4354         ;;
4355     esac
4356
4357 elif enabled alpha; then
4358
4359     cpuflags="-mcpu=$cpu"
4360
4361 elif enabled arm; then
4362
4363     check_arm_arch() {
4364         check_cpp_condition stddef.h \
4365             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4366             $cpuflags
4367     }
4368
4369     probe_arm_arch() {
4370         if   check_arm_arch 4;        then echo armv4
4371         elif check_arm_arch 4T;       then echo armv4t
4372         elif check_arm_arch 5;        then echo armv5
4373         elif check_arm_arch 5E;       then echo armv5e
4374         elif check_arm_arch 5T;       then echo armv5t
4375         elif check_arm_arch 5TE;      then echo armv5te
4376         elif check_arm_arch 5TEJ;     then echo armv5te
4377         elif check_arm_arch 6;        then echo armv6
4378         elif check_arm_arch 6J;       then echo armv6j
4379         elif check_arm_arch 6K;       then echo armv6k
4380         elif check_arm_arch 6Z;       then echo armv6z
4381         elif check_arm_arch 6ZK;      then echo armv6zk
4382         elif check_arm_arch 6T2;      then echo armv6t2
4383         elif check_arm_arch 7;        then echo armv7
4384         elif check_arm_arch 7A  7_A;  then echo armv7-a
4385         elif check_arm_arch 7S;       then echo armv7-a
4386         elif check_arm_arch 7R  7_R;  then echo armv7-r
4387         elif check_arm_arch 7M  7_M;  then echo armv7-m
4388         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4389         elif check_arm_arch 8A  8_A;  then echo armv8-a
4390         fi
4391     }
4392
4393     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4394
4395     case $cpu in
4396         armv*)
4397             cpuflags="-march=$cpu"
4398             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4399         ;;
4400         *)
4401             cpuflags="-mcpu=$cpu"
4402             case $cpu in
4403                 cortex-a*)                               subarch=armv7a  ;;
4404                 cortex-r*)                               subarch=armv7r  ;;
4405                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4406                 arm11*)                                  subarch=armv6   ;;
4407                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4408                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4409                 *)                             subarch=$(probe_arm_arch) ;;
4410             esac
4411         ;;
4412     esac
4413
4414     case "$subarch" in
4415         armv5t*)    enable fast_clz                ;;
4416         armv[6-8]*)
4417             enable fast_clz
4418             disabled fast_unaligned || enable fast_unaligned
4419             ;;
4420     esac
4421
4422 elif enabled avr32; then
4423
4424     case $cpu in
4425         ap7[02]0[0-2])
4426             subarch="avr32_ap"
4427             cpuflags="-mpart=$cpu"
4428         ;;
4429         ap)
4430             subarch="avr32_ap"
4431             cpuflags="-march=$cpu"
4432         ;;
4433         uc3[ab]*)
4434             subarch="avr32_uc"
4435             cpuflags="-mcpu=$cpu"
4436         ;;
4437         uc)
4438             subarch="avr32_uc"
4439             cpuflags="-march=$cpu"
4440         ;;
4441     esac
4442
4443 elif enabled bfin; then
4444
4445     cpuflags="-mcpu=$cpu"
4446
4447 elif enabled mips; then
4448
4449     cpuflags="-march=$cpu"
4450
4451     if [ "$cpu" != "generic" ]; then
4452         disable mips32r2
4453         disable mips32r5
4454         disable mips64r2
4455         disable mips32r6
4456         disable mips64r6
4457         disable loongson2
4458         disable loongson3
4459
4460         case $cpu in
4461             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4462                 enable mips32r2
4463                 disable msa
4464             ;;
4465             p5600|i6400|p6600)
4466                 disable mipsdsp
4467                 disable mipsdspr2
4468             ;;
4469             loongson*)
4470                 enable loongson2
4471                 enable loongson3
4472                 enable local_aligned_8 local_aligned_16 local_aligned_32
4473                 enable simd_align_16
4474                 enable fast_64bit
4475                 enable fast_clz
4476                 enable fast_cmov
4477                 enable fast_unaligned
4478                 disable aligned_stack
4479                 disable mipsfpu
4480                 disable mipsdsp
4481                 disable mipsdspr2
4482                 case $cpu in
4483                     loongson3*)
4484                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4485                     ;;
4486                     loongson2e)
4487                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4488                     ;;
4489                     loongson2f)
4490                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4491                     ;;
4492                 esac
4493             ;;
4494             *)
4495                 # Unknown CPU. Disable everything.
4496                 warn "unknown CPU. Disabling all MIPS optimizations."
4497                 disable mipsfpu
4498                 disable mipsdsp
4499                 disable mipsdspr2
4500                 disable msa
4501                 disable mmi
4502             ;;
4503         esac
4504
4505         case $cpu in
4506             24kc)
4507                 disable mipsfpu
4508                 disable mipsdsp
4509                 disable mipsdspr2
4510             ;;
4511             24kf*)
4512                 disable mipsdsp
4513                 disable mipsdspr2
4514             ;;
4515             24kec|34kc|1004kc)
4516                 disable mipsfpu
4517                 disable mipsdspr2
4518             ;;
4519             24kef*|34kf*|1004kf*)
4520                 disable mipsdspr2
4521             ;;
4522             74kc)
4523                 disable mipsfpu
4524             ;;
4525             p5600)
4526                 enable mips32r5
4527                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4528             ;;
4529             i6400)
4530                 enable mips64r6
4531                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4532             ;;
4533             p6600)
4534                 enable mips64r6
4535                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4536             ;;
4537         esac
4538     else
4539         # We do not disable anything. Is up to the user to disable the unwanted features.
4540         warn 'generic cpu selected'
4541     fi
4542
4543 elif enabled ppc; then
4544
4545     disable ldbrx
4546
4547     case $(tolower $cpu) in
4548         601|ppc601|powerpc601)
4549             cpuflags="-mcpu=601"
4550             disable altivec
4551         ;;
4552         603*|ppc603*|powerpc603*)
4553             cpuflags="-mcpu=603"
4554             disable altivec
4555         ;;
4556         604*|ppc604*|powerpc604*)
4557             cpuflags="-mcpu=604"
4558             disable altivec
4559         ;;
4560         g3|75*|ppc75*|powerpc75*)
4561             cpuflags="-mcpu=750"
4562             disable altivec
4563         ;;
4564         g4|745*|ppc745*|powerpc745*)
4565             cpuflags="-mcpu=7450"
4566             disable vsx
4567         ;;
4568         74*|ppc74*|powerpc74*)
4569             cpuflags="-mcpu=7400"
4570             disable vsx
4571         ;;
4572         g5|970|ppc970|powerpc970)
4573             cpuflags="-mcpu=970"
4574             disable vsx
4575         ;;
4576         power[3-6]*)
4577             cpuflags="-mcpu=$cpu"
4578             disable vsx
4579         ;;
4580         power[7-8]*)
4581             cpuflags="-mcpu=$cpu"
4582         ;;
4583         cell)
4584             cpuflags="-mcpu=cell"
4585             enable ldbrx
4586             disable vsx
4587         ;;
4588         e500mc)
4589             cpuflags="-mcpu=e500mc"
4590             disable altivec
4591         ;;
4592         e500v2)
4593             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4594             disable altivec
4595             disable dcbzl
4596         ;;
4597         e500)
4598             cpuflags="-mcpu=8540 -mhard-float"
4599             disable altivec
4600             disable dcbzl
4601         ;;
4602     esac
4603
4604 elif enabled sparc; then
4605
4606     case $cpu in
4607         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4608             cpuflags="-mcpu=$cpu"
4609         ;;
4610         ultrasparc*|niagara[234])
4611             cpuflags="-mcpu=$cpu"
4612         ;;
4613     esac
4614
4615 elif enabled x86; then
4616
4617     case $cpu in
4618         i[345]86|pentium)
4619             cpuflags="-march=$cpu"
4620             disable i686
4621             disable mmx
4622         ;;
4623         # targets that do NOT support nopl and conditional mov (cmov)
4624         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4625             cpuflags="-march=$cpu"
4626             disable i686
4627         ;;
4628         # targets that do support nopl and conditional mov (cmov)
4629         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4630         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4631         |amdfam10|barcelona|b[dt]ver*|znver*)
4632             cpuflags="-march=$cpu"
4633             enable i686
4634             enable fast_cmov
4635         ;;
4636         # targets that do support conditional mov but on which it's slow
4637         pentium4|pentium4m|prescott|nocona)
4638             cpuflags="-march=$cpu"
4639             enable i686
4640             disable fast_cmov
4641         ;;
4642     esac
4643
4644 fi
4645
4646 if [ "$cpu" != generic ]; then
4647     add_cflags  $cpuflags
4648     add_asflags $cpuflags
4649     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4650 fi
4651
4652 # compiler sanity check
4653 check_exec <<EOF
4654 int main(void){ return 0; }
4655 EOF
4656 if test "$?" != 0; then
4657     echo "$cc is unable to create an executable file."
4658     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4659         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4660         echo "Only do this if you know what cross compiling means."
4661     fi
4662     die "C compiler test failed."
4663 fi
4664
4665 add_cppflags -D_ISOC99_SOURCE
4666 add_cxxflags -D__STDC_CONSTANT_MACROS
4667 add_cxxflags -std=c++98
4668
4669 # some compilers silently accept -std=c11, so we also need to check that the
4670 # version macro is defined properly
4671 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4672     add_cflags -std=c11
4673 else
4674     check_cflags -std=c99
4675 fi
4676
4677 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4678 #include <stdlib.h>
4679 EOF
4680 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4681 #include <stdlib.h>
4682 EOF
4683
4684 add_host_cppflags -D_ISOC99_SOURCE
4685 check_host_cflags -std=c99
4686 check_host_cflags -Wall
4687 check_host_cflags -O3
4688
4689 check_64bit(){
4690     arch32=$1
4691     arch64=$2
4692     expr=$3
4693     check_code cc "" "int test[2*($expr) - 1]" &&
4694         subarch=$arch64 || subarch=$arch32
4695 }
4696
4697 case "$arch" in
4698     aarch64|alpha|ia64)
4699         spic=$shared
4700     ;;
4701     mips)
4702         check_64bit mips mips64 '_MIPS_SIM > 1'
4703         spic=$shared
4704     ;;
4705     parisc)
4706         check_64bit parisc parisc64 'sizeof(void *) > 4'
4707         spic=$shared
4708     ;;
4709     ppc)
4710         check_64bit ppc ppc64 'sizeof(void *) > 4'
4711         spic=$shared
4712     ;;
4713     s390)
4714         check_64bit s390 s390x 'sizeof(void *) > 4'
4715         spic=$shared
4716     ;;
4717     sparc)
4718         check_64bit sparc sparc64 'sizeof(void *) > 4'
4719         spic=$shared
4720     ;;
4721     x86)
4722         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4723         # Treat x32 as x64 for now. Note it also needs spic=$shared
4724         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4725             subarch=x86_64
4726         if test "$subarch" = "x86_64"; then
4727             spic=$shared
4728         fi
4729     ;;
4730     ppc)
4731         check_cc <<EOF && subarch="ppc64"
4732         int test[(int)sizeof(char*) - 7];
4733 EOF
4734     ;;
4735 esac
4736
4737 enable $subarch
4738 enabled spic && enable_weak pic
4739
4740 # OS specific
4741 case $target_os in
4742     aix)
4743         SHFLAGS=-shared
4744         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4745         enabled shared && add_ldflags -Wl,-brtl
4746         ;;
4747     android)
4748         disable symver
4749         enable section_data_rel_ro
4750         SLIB_INSTALL_NAME='$(SLIBNAME)'
4751         SLIB_INSTALL_LINKS=
4752         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4753         ;;
4754     haiku)
4755         prefix_default="/boot/common"
4756         network_extralibs="-lnetwork"
4757         host_libs=
4758         ;;
4759     sunos)
4760         SHFLAGS='-shared -Wl,-h,$$(@F)'
4761         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4762         network_extralibs="-lsocket -lnsl"
4763         add_cppflags -D__EXTENSIONS__
4764         # When using suncc to build, the Solaris linker will mark
4765         # an executable with each instruction set encountered by
4766         # the Solaris assembler.  As our libraries contain their own
4767         # guards for processor-specific code, instead suppress
4768         # generation of the HWCAPS ELF section on Solaris x86 only.
4769         enabled_all suncc x86 &&
4770             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4771             add_ldflags -Wl,-M,mapfile
4772         nm_default='nm -P -g'
4773         version_script='-M'
4774         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4775         ;;
4776     netbsd)
4777         disable symver
4778         oss_indev_extralibs="-lossaudio"
4779         oss_outdev_extralibs="-lossaudio"
4780         enabled gcc || check_ldflags -Wl,-zmuldefs
4781         ;;
4782     openbsd|bitrig)
4783         disable symver
4784         SHFLAGS='-shared'
4785         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4786         SLIB_INSTALL_LINKS=
4787         oss_indev_extralibs="-lossaudio"
4788         oss_outdev_extralibs="-lossaudio"
4789         ;;
4790     dragonfly)
4791         disable symver
4792         ;;
4793     freebsd)
4794         ;;
4795     bsd/os)
4796         add_extralibs -lpoll -lgnugetopt
4797         strip="strip -d"
4798         ;;
4799     darwin)
4800         enabled ppc && add_asflags -force_cpusubtype_ALL
4801         install_name_dir_default='$(SHLIBDIR)'
4802         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4803         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4804         strip="${strip} -x"
4805         add_ldflags -Wl,-dynamic,-search_paths_first
4806         SLIBSUF=".dylib"
4807         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4808         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4809         objformat="macho"
4810         enabled x86_64 && objformat="macho64"
4811         enabled_any pic shared x86_64 ||
4812             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4813         check_header dispatch/dispatch.h &&
4814             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4815         version_script='-exported_symbols_list'
4816         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4817         ;;
4818     msys*)
4819         die "Native MSYS builds are discouraged, please use the MINGW environment."
4820         ;;
4821     mingw32*|mingw64*)
4822         if test $target_os = "mingw32ce"; then
4823             disable network
4824         else
4825             target_os=mingw32
4826         fi
4827         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4828         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4829         LIBTARGET=i386
4830         if enabled x86_64; then
4831             LIBTARGET="i386:x86-64"
4832         elif enabled arm; then
4833             LIBTARGET=arm-wince
4834         fi
4835         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4836         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4837         shlibdir_default="$bindir_default"
4838         SLIBPREF=""
4839         SLIBSUF=".dll"
4840         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4841         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4842         dlltool="${cross_prefix}dlltool"
4843         if check_cmd lib.exe -list; then
4844             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4845             if enabled x86_64; then
4846                 LIBTARGET=x64
4847             fi
4848         elif check_cmd $dlltool --version; then
4849             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4850         fi
4851         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4852         SLIB_INSTALL_LINKS=
4853         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4854         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4855         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4856         objformat="win32"
4857         ranlib=:
4858         enable dos_paths
4859         check_ldflags -Wl,--nxcompat,--dynamicbase
4860         # Lets work around some stupidity in binutils.
4861         # ld will strip relocations from executables even though we need them
4862         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4863         # however ld then forgets what the entry point should be (oops) so we
4864         # have to manually (re)set it.
4865         if enabled x86_32; then
4866             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4867         elif enabled x86_64; then
4868             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4869             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4870             # Set image base >4GB for extra entropy with HEASLR
4871             add_ldexeflags -Wl,--image-base,0x140000000
4872             append SHFLAGS -Wl,--image-base,0x180000000
4873         fi
4874         ;;
4875     win32|win64)
4876         disable symver
4877         if enabled shared; then
4878             # Link to the import library instead of the normal static library
4879             # for shared libs.
4880             LD_LIB='%.lib'
4881             # Cannot build both shared and static libs with MSVC or icl.
4882             disable static
4883         fi
4884         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4885         shlibdir_default="$bindir_default"
4886         SLIBPREF=""
4887         SLIBSUF=".dll"
4888         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4889         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4890         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4891         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4892         SLIB_INSTALL_LINKS=
4893         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4894         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4895         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4896         objformat="win32"
4897         ranlib=:
4898         enable dos_paths
4899         ;;
4900     cygwin*)
4901         target_os=cygwin
4902         shlibdir_default="$bindir_default"
4903         SLIBPREF="cyg"
4904         SLIBSUF=".dll"
4905         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4906         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4907         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4908         SLIB_INSTALL_LINKS=
4909         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4910         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4911         objformat="win32"
4912         enable dos_paths
4913         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4914         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4915         ;;
4916     *-dos|freedos|opendos)
4917         network_extralibs="-lsocket"
4918         objformat="coff"
4919         enable dos_paths
4920         add_cppflags -U__STRICT_ANSI__
4921         ;;
4922     linux)
4923         enable dv1394
4924         enable section_data_rel_ro
4925         ;;
4926     irix*)
4927         target_os=irix
4928         ranlib="echo ignoring ranlib"
4929         ;;
4930     os/2*)
4931         strip="lxlite -CS"
4932         objformat="aout"
4933         add_cppflags -D_GNU_SOURCE
4934         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4935         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4936         LIBSUF="_s.a"
4937         SLIBPREF=""
4938         SLIBSUF=".dll"
4939         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4940         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4941         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4942             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4943             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4944             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4945             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4946         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4947             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4948         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4949         SLIB_INSTALL_LINKS=
4950         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4951         enable dos_paths
4952         enable_weak os2threads
4953         ;;
4954     gnu/kfreebsd)
4955         add_cppflags -D_BSD_SOURCE
4956         ;;
4957     gnu)
4958         ;;
4959     qnx)
4960         add_cppflags -D_QNX_SOURCE
4961         network_extralibs="-lsocket"
4962         ;;
4963     symbian)
4964         SLIBSUF=".dll"
4965         enable dos_paths
4966         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4967         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4968         add_ldflags -Wl,--target1-abs,--no-undefined \
4969                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4970                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4971         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4972                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4973                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4974         ;;
4975     osf1)
4976         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4977         ;;
4978     minix)
4979         ;;
4980     plan9)
4981         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4982                      -D_REENTRANT_SOURCE        \
4983                      -D_RESEARCH_SOURCE         \
4984                      -DFD_SETSIZE=96            \
4985                      -DHAVE_SOCK_OPTS
4986         add_compat strtod.o strtod=avpriv_strtod
4987         network_extralibs='-lbsd'
4988         exeobjs=compat/plan9/main.o
4989         disable ffserver
4990         cp_f='cp'
4991         ;;
4992     none)
4993         ;;
4994     *)
4995         die "Unknown OS '$target_os'."
4996         ;;
4997 esac
4998
4999 # test if creating links works
5000 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5001 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5002 mkdir "$link_dest"
5003 $ln_s "$link_dest" "$link_name"
5004 touch "$link_dest/test_file"
5005 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5006     # create link to source path
5007     [ -e src ] && rm src
5008     $ln_s "$source_path" src
5009     source_link=src
5010 else
5011     # creating directory links doesn't work
5012     # fall back to using the full source path
5013     source_link="$source_path"
5014 fi
5015 # cleanup
5016 rm -r "$link_dest"
5017 rm -r "$link_name"
5018
5019 # determine libc flavour
5020
5021 probe_libc(){
5022     pfx=$1
5023     pfx_no_=${pfx%_}
5024     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5025     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5026         eval ${pfx}libc_type=uclibc
5027         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5028     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5029         eval ${pfx}libc_type=glibc
5030         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5031     # MinGW headers can be installed on Cygwin, so check for newlib first.
5032     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5033         eval ${pfx}libc_type=newlib
5034         add_${pfx}cppflags -U__STRICT_ANSI__
5035     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5036     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5037         eval ${pfx}libc_type=mingw64
5038         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5039             add_compat msvcrt/snprintf.o
5040             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5041         fi
5042         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5043         eval test \$${pfx_no_}cc_type = "gcc" &&
5044             add_${pfx}cppflags -D__printf__=__gnu_printf__
5045     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5046          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5047         eval ${pfx}libc_type=mingw32
5048         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5049             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5050             die "ERROR: MinGW32 runtime version must be >= 3.15."
5051         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5052         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5053             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5054         eval test \$${pfx_no_}cc_type = "gcc" &&
5055             add_${pfx}cppflags -D__printf__=__gnu_printf__
5056     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5057         eval ${pfx}libc_type=msvcrt
5058         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5059             if [ "$pfx" = host_ ]; then
5060                 add_host_cppflags -Dsnprintf=_snprintf
5061             else
5062                 add_compat strtod.o strtod=avpriv_strtod
5063                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5064                                              _snprintf=avpriv_snprintf  \
5065                                              vsnprintf=avpriv_vsnprintf
5066             fi
5067         fi
5068         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5069         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5070         # 0x601 by default unless something else is set by the user.
5071         # This can easily lead to us detecting functions only present
5072         # in such new versions and producing binaries requiring windows 7.0.
5073         # Therefore explicitly set the default to XP unless the user has
5074         # set something else on the command line.
5075         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5076         # family. For these cases, configure is free to use any functions
5077         # found in the SDK headers by default. (Alternatively, we could force
5078         # _WIN32_WINNT to 0x0602 in that case.)
5079         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5080             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5081 #ifdef WINAPI_FAMILY
5082 #include <winapifamily.h>
5083 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5084 #error not desktop
5085 #endif
5086 #endif
5087 EOF
5088         if [ "$pfx" = "" ]; then
5089             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5090             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5091         fi
5092     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5093         eval ${pfx}libc_type=klibc
5094     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5095         eval ${pfx}libc_type=bionic
5096     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5097         eval ${pfx}libc_type=solaris
5098         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5099     fi
5100     check_${pfx}cc <<EOF
5101 #include <time.h>
5102 void *v = localtime_r;
5103 EOF
5104 test "$?" != 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
5105 #include <time.h>
5106 void *v = localtime_r;
5107 EOF
5108
5109 }
5110
5111 probe_libc
5112 test -n "$libc_type" && enable libc_$libc_type
5113 probe_libc host_
5114 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5115
5116 case $libc_type in
5117     bionic)
5118         add_compat strtod.o strtod=avpriv_strtod
5119         ;;
5120 esac
5121
5122 # hacks for compiler/libc/os combinations
5123
5124 if enabled_all tms470 libc_glibc; then
5125     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5126     add_cppflags -D__USER_LABEL_PREFIX__=
5127     add_cppflags -D__builtin_memset=memset
5128     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5129     add_cflags   -pds=48    # incompatible redefinition of macro
5130 fi
5131
5132 if enabled_all ccc libc_glibc; then
5133     add_ldflags -Wl,-z,now  # calls to libots crash without this
5134 fi
5135
5136 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5137     add_cppflags '-I\$(SRC_PATH)/compat/float'
5138
5139 esc(){
5140     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5141 }
5142
5143 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5144
5145 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5146
5147 set_default libdir
5148 : ${shlibdir_default:="$libdir"}
5149 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5150
5151 set_default $PATHS_LIST
5152 set_default nm
5153
5154 # we need to build at least one lib type
5155 if ! enabled_any static shared; then
5156     cat <<EOF
5157 At least one library type must be built.
5158 Specify --enable-static to build the static libraries or --enable-shared to
5159 build the shared libraries as well. To only build the shared libraries specify
5160 --disable-static in addition to --enable-shared.
5161 EOF
5162     exit 1
5163 fi
5164
5165 die_license_disabled() {
5166     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
5167 }
5168
5169 die_license_disabled_gpl() {
5170     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
5171 }
5172
5173 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5174 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5175
5176 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
5177 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
5178
5179 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5180
5181 disabled optimizations || check_cflags -fomit-frame-pointer
5182
5183 enable_weak_pic() {
5184     disabled pic && return
5185     enable pic
5186     add_cppflags -DPIC
5187     case "$target_os" in
5188     mingw*|cygwin*)
5189         ;;
5190     *)
5191         add_cflags -fPIC
5192         ;;
5193     esac
5194     add_asflags  -fPIC
5195 }
5196
5197 enabled pic && enable_weak_pic
5198
5199 check_cc <<EOF || die "Symbol mangling check failed."
5200 int ff_extern;
5201 EOF
5202 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5203 extern_prefix=${sym%%ff_extern*}
5204
5205 check_cc <<EOF && enable_weak inline_asm
5206 void foo(void) { __asm__ volatile ("" ::); }
5207 EOF
5208
5209 _restrict=
5210 for restrict_keyword in restrict __restrict__ __restrict; do
5211     check_cc <<EOF && _restrict=$restrict_keyword && break
5212 void foo(char * $restrict_keyword p);
5213 EOF
5214 done
5215
5216 check_cc <<EOF && enable pragma_deprecated
5217 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5218 EOF
5219
5220 check_cc <<EOF && enable attribute_packed
5221 struct { int x; } __attribute__((packed)) x;
5222 EOF
5223
5224 check_cc <<EOF && enable attribute_may_alias
5225 union { int x; } __attribute__((may_alias)) x;
5226 EOF
5227
5228 check_cc <<EOF || die "endian test failed"
5229 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5230 EOF
5231 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5232
5233 if ! enabled ppc64 || enabled bigendian; then
5234     disable vsx
5235 fi
5236
5237 check_gas() {
5238     log "check_gas using '$as' as AS"
5239     # :vararg is used on aarch64, arm and ppc altivec
5240     check_as <<EOF || return 1
5241 .macro m n, y:vararg=0
5242 \n: .int \y
5243 .endm
5244 m x
5245 EOF
5246     # .altmacro is only used in arm asm
5247     ! enabled arm || check_as <<EOF || return 1
5248 .altmacro
5249 EOF
5250     enable gnu_as
5251     return 0
5252 }
5253
5254 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5255     nogas=:
5256     enabled_any arm aarch64 && nogas=die
5257     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5258     as_noop=-v
5259
5260     case $as_type in
5261         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5262         gcc)  gaspp_as_type=gas ;;
5263         *)    gaspp_as_type=$as_type ;;
5264     esac
5265
5266     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5267
5268     test "${as#*gas-preprocessor.pl}" != "$as" ||
5269     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5270         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5271
5272     if ! check_gas ; then
5273         as=${gas:=$as}
5274         check_gas || \
5275             $nogas "GNU assembler not found, install/update gas-preprocessor"
5276     fi
5277
5278     check_as <<EOF && enable as_func
5279 .func test
5280 .endfunc
5281 EOF
5282 fi
5283
5284 check_inline_asm inline_asm_labels '"1:\n"'
5285
5286 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5287
5288 if enabled aarch64; then
5289     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5290     # internal assembler in clang 3.3 does not support this instruction
5291     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5292     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5293
5294     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5295
5296 elif enabled alpha; then
5297
5298     check_cflags -mieee
5299
5300 elif enabled arm; then
5301
5302     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5303
5304     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5305 float func(float a, float b){ return a+b; }
5306 EOF
5307
5308     enabled thumb && check_cflags -mthumb || check_cflags -marm
5309
5310     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5311         enable vfp_args
5312     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5313         enable vfp_args
5314     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5315         case "${cross_prefix:-$cc}" in
5316             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5317             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5318 __asm__ (".eabi_attribute 28, 1");
5319 int main(void) { return 0; }
5320 EOF
5321         esac
5322         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5323     fi
5324
5325     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5326     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5327     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5328     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5329     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5330     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5331     enabled setend  && check_insn setend  'setend be'
5332
5333     [ $target_os = linux ] || [ $target_os = android ] ||
5334         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5335             $ARCH_EXT_LIST_ARM
5336
5337     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5338
5339     check_as <<EOF && enable as_dn_directive
5340 ra .dn d0.i16
5341 .unreq ra
5342 EOF
5343     check_as <<EOF && enable as_fpu_directive
5344 .fpu neon
5345 EOF
5346
5347     # llvm's integrated assembler supports .object_arch from llvm 3.5
5348     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5349 .object_arch armv4
5350 EOF
5351
5352     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5353
5354 elif enabled mips; then
5355
5356     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5357     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5358     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5359
5360     # Enable minimum ISA based on selected options
5361     if enabled mips64; then
5362         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5363         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5364         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5365     else
5366         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5367         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5368         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5369         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5370     fi
5371
5372     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5373     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5374     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5375     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5376     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5377
5378 elif enabled parisc; then
5379
5380     if enabled gcc; then
5381         case $($cc -dumpversion) in
5382             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5383         esac
5384     fi
5385
5386 elif enabled ppc; then
5387
5388     enable local_aligned_8 local_aligned_16 local_aligned_32
5389
5390     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5391     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5392     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5393     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5394
5395     # AltiVec flags: The FSF version of GCC differs from the Apple version
5396     if enabled altivec; then
5397         check_cflags -maltivec -mabi=altivec &&
5398         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5399         check_cflags -faltivec
5400
5401         # check if our compiler supports Motorola AltiVec C API
5402         check_cc <<EOF || disable altivec
5403 $inc_altivec_h
5404 int main(void) {
5405     vector signed int v1 = (vector signed int) { 0 };
5406     vector signed int v2 = (vector signed int) { 1 };
5407     v1 = vec_add(v1, v2);
5408     return 0;
5409 }
5410 EOF
5411
5412         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5413     fi
5414
5415     if enabled vsx; then
5416         check_cflags -mvsx &&
5417         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5418     fi
5419
5420     if enabled power8; then
5421         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5422     fi
5423
5424 elif enabled x86; then
5425
5426     check_builtin rdtsc    intrin.h   "__rdtsc()"
5427     check_builtin mm_empty mmintrin.h "_mm_empty()"
5428
5429     enable local_aligned_8 local_aligned_16 local_aligned_32
5430
5431     # check whether EBP is available on x86
5432     # As 'i' is stored on the stack, this program will crash
5433     # if the base pointer is used to access it because the
5434     # base pointer is cleared in the inline assembly code.
5435     check_exec_crash <<EOF && enable ebp_available
5436 volatile int i=0;
5437 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5438 return i;
5439 EOF
5440
5441     # check whether EBX is available on x86
5442     check_inline_asm ebx_available '""::"b"(0)' &&
5443         check_inline_asm ebx_available '"":::"%ebx"'
5444
5445     # check whether xmm clobbers are supported
5446     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5447
5448     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5449         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5450
5451     # check whether binutils is new enough to compile SSSE3/MMXEXT
5452     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5453     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5454
5455     if ! disabled_any asm mmx yasm; then
5456         if check_cmd $yasmexe --version; then
5457             enabled x86_64 && yasm_extra="-m amd64"
5458             yasm_debug="-g dwarf2"
5459         elif check_cmd nasm -v; then
5460             yasmexe=nasm
5461             yasm_debug="-g -F dwarf"
5462             if enabled x86_64; then
5463                 case "$objformat" in
5464                     elf)   objformat=elf64 ;;
5465                     win32) objformat=win64 ;;
5466                 esac
5467             fi
5468         fi
5469
5470         YASMFLAGS="-f $objformat $yasm_extra"
5471         enabled pic               && append YASMFLAGS "-DPIC"
5472         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5473         case "$objformat" in
5474             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5475         esac
5476
5477         check_yasm "movbe ecx, [5]" && enable yasm ||
5478             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5479         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5480         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5481         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5482         check_yasm "CPU amdnop" || disable cpunop
5483     fi
5484
5485     case "$cpu" in
5486         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5487             disable fast_clz
5488         ;;
5489     esac
5490
5491 fi
5492
5493 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5494
5495 check_ldflags -Wl,--as-needed
5496 check_ldflags -Wl,-z,noexecstack
5497
5498 if check_func dlopen && check_func dlsym; then
5499     ldl=
5500 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5501     ldl=-ldl
5502 fi
5503
5504 avisynth_demuxer_extralibs='$ldl'
5505 cuda_extralibs='$ldl'
5506 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5507 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5508 frei0r_filter_extralibs='$ldl'
5509 frei0r_src_filter_extralibs='$ldl'
5510 ladspa_filter_extralibs='$ldl'
5511 nvenc_extralibs='$ldl'
5512 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5513 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5514
5515 if ! disabled network; then
5516     check_func getaddrinfo $network_extralibs
5517     check_func inet_aton $network_extralibs
5518
5519     check_type netdb.h "struct addrinfo"
5520     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5521     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5522     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5523     check_type poll.h "struct pollfd"
5524     check_type netinet/sctp.h "struct sctp_event_subscribe"
5525     check_struct "sys/socket.h" "struct msghdr" msg_flags
5526     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5527     check_type netinet/in.h "struct sockaddr_in6"
5528     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5529     check_type "sys/types.h sys/socket.h" socklen_t
5530
5531     # Prefer arpa/inet.h over winsock2
5532     if check_header arpa/inet.h ; then
5533         check_func closesocket
5534     elif check_header winsock2.h ; then
5535         check_func_headers winsock2.h closesocket -lws2 &&
5536             network_extralibs="-lws2" ||
5537         { check_func_headers winsock2.h closesocket -lws2_32 &&
5538             network_extralibs="-lws2_32"; } || disable winsock2_h network
5539         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5540
5541         check_type ws2tcpip.h socklen_t
5542         check_type ws2tcpip.h "struct addrinfo"
5543         check_type ws2tcpip.h "struct group_source_req"
5544         check_type ws2tcpip.h "struct ip_mreq_source"
5545         check_type ws2tcpip.h "struct ipv6_mreq"
5546         check_type winsock2.h "struct pollfd"
5547         check_struct winsock2.h "struct sockaddr" sa_len
5548         check_type ws2tcpip.h "struct sockaddr_in6"
5549         check_type ws2tcpip.h "struct sockaddr_storage"
5550     else
5551         disable network
5552     fi
5553 fi
5554
5555 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5556 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5557 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5558 check_builtin sarestart signal.h "SA_RESTART"
5559 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5560 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5561 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5562 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5563 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5564
5565 case "$custom_allocator" in
5566     jemalloc)
5567         # jemalloc by default does not use a prefix
5568         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5569     ;;
5570     tcmalloc)
5571         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5572         malloc_prefix=tc_
5573     ;;
5574 esac
5575
5576 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5577 check_func  ${malloc_prefix}memalign            && enable memalign
5578 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5579
5580 check_func  access
5581 check_func_headers stdlib.h arc4random
5582 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5583 check_func  fcntl
5584 check_func  fork
5585 check_func  gethrtime
5586 check_func  getopt
5587 check_func  getrusage
5588 check_func  gettimeofday
5589 check_func  isatty
5590 check_func  mach_absolute_time
5591 check_func  mkstemp
5592 check_func  mmap
5593 check_func  mprotect
5594 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5595 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5596 check_func  sched_getaffinity
5597 check_func  setrlimit
5598 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5599 check_func  strerror_r
5600 check_func  sysconf
5601 check_func  sysctl
5602 check_func  usleep
5603
5604 check_func_headers conio.h kbhit
5605 check_func_headers io.h setmode
5606 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5607 check_func_headers stdlib.h getenv
5608 check_func_headers sys/stat.h lstat
5609
5610 check_func_headers windows.h CoTaskMemFree -lole32
5611 check_func_headers windows.h GetProcessAffinityMask
5612 check_func_headers windows.h GetProcessTimes
5613 check_func_headers windows.h GetSystemTimeAsFileTime
5614 check_func_headers windows.h LoadLibrary
5615 check_func_headers windows.h MapViewOfFile
5616 check_func_headers windows.h PeekNamedPipe
5617 check_func_headers windows.h SetConsoleTextAttribute
5618 check_func_headers windows.h SetConsoleCtrlHandler
5619 check_func_headers windows.h Sleep
5620 check_func_headers windows.h VirtualAlloc
5621 check_struct windows.h "CONDITION_VARIABLE" Ptr
5622 check_func_headers glob.h glob
5623 enabled xlib &&
5624     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5625
5626 check_header AudioToolbox/AudioToolbox.h
5627 check_header direct.h
5628 check_header dirent.h
5629 check_header dlfcn.h
5630 check_header d3d11.h
5631 check_header dxva.h
5632 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5633 check_header io.h
5634 check_header libcrystalhd/libcrystalhd_if.h
5635 check_header mach/mach_time.h
5636 check_header malloc.h
5637 check_header net/udplite.h
5638 check_header poll.h
5639 check_header sys/mman.h
5640 check_header sys/param.h
5641 check_header sys/resource.h
5642 check_header sys/select.h
5643 check_header sys/time.h
5644 check_header sys/un.h
5645 check_header termios.h
5646 check_header unistd.h
5647 check_header valgrind/valgrind.h
5648 check_header vdpau/vdpau.h
5649 check_header vdpau/vdpau_x11.h
5650 check_header VideoDecodeAcceleration/VDADecoder.h
5651 check_header VideoToolbox/VideoToolbox.h
5652 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5653 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5654 check_header windows.h
5655 check_header X11/extensions/XvMClib.h
5656 check_header asm/types.h
5657
5658 # it seems there are versions of clang in some distros that try to use the
5659 # gcc headers, which explodes for stdatomic
5660 # so we also check that atomics actually work here
5661 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5662
5663 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5664 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5665 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5666 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5667
5668 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5669
5670 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5671 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5672 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5673 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5674 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5675
5676 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5677 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5678 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5679 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5680 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5681 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5682 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5683 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5684
5685 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5686
5687 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5688
5689 if ! disabled w32threads && ! enabled pthreads; then
5690     check_func_headers "windows.h process.h" _beginthreadex &&
5691         enable w32threads || disable w32threads
5692     if ! enabled w32threads && enabled winrt; then
5693         check_func_headers "windows.h" CreateThread &&
5694             enable w32threads || disable w32threads
5695     fi
5696 fi
5697
5698 # check for some common methods of building with pthread support
5699 # do this before the optional library checks as some of them require pthreads
5700 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5701     enable pthreads
5702     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5703         add_cflags -pthread
5704         add_extralibs -pthread
5705     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5706         add_cflags -pthreads
5707         add_extralibs -pthreads
5708     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5709         add_cflags -ldl -pthread
5710         add_extralibs -ldl -pthread
5711     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5712         add_extralibs -lpthreadGC2
5713     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5714         :
5715     elif ! check_func pthread_join && ! check_func pthread_create; then
5716         disable pthreads
5717     fi
5718     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5719 fi
5720
5721
5722 if enabled pthreads; then
5723   check_func pthread_cancel
5724 fi
5725
5726 enabled pthreads &&
5727     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5728
5729 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5730 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5731 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5732
5733 check_lib math.h sin -lm && LIBM="-lm"
5734 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5735
5736 atan2f_args=2
5737 copysign_args=2
5738 hypot_args=2
5739 ldexpf_args=2
5740 powf_args=2
5741
5742 for func in $MATH_FUNCS; do
5743     eval check_mathfunc $func \${${func}_args:-1}
5744 done
5745
5746 for func in $COMPLEX_FUNCS; do
5747     eval check_complexfunc $func \${${func}_args:-1}
5748 done
5749
5750 # these are off by default, so fail if requested and not available
5751 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5752 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5753                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5754 enabled cuda              && check_header cuda.h # this is not a dependency
5755 enabled cuvid             && { enabled cuda ||
5756                                die "ERROR: CUVID requires CUDA"; }
5757 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5758 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5759 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5760 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5761                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5762 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5763 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5764 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5765 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5766                                check_lib2 "dlfcn.h" dlopen -ldl; }
5767 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5768 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5769 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5770 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5771 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5772 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5773                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5774                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5775 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5776 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5777                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5778                                  warn "using libfdk without pkg-config"; } }
5779 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"
5780 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5781 enabled fontconfig        && enable libfontconfig
5782 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5783 enabled libfreetype       && require_libfreetype
5784 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5785 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5786 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5787                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5788                                done || die "ERROR: libgsm not found"; }
5789 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5790 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5791 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5792 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5793 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5794 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5795 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5796 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5797 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5798 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5799                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5800                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5801                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5802 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5803 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5804                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5805                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5806                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5807                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5808                                die "ERROR: libopenjpeg not found"; }
5809 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5810 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5811 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5812 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5813 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5814 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5815 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5816 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5817                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5818 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5819 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5820 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5821 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5822 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5823 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5824 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5825                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5826                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5827 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5828 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5829 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5830 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5831
5832 enabled libvpx            && {
5833     enabled libvpx_vp8_decoder && {
5834         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5835             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5836                 die "ERROR: libvpx decoder version must be >=0.9.1";
5837     }
5838     enabled libvpx_vp8_encoder && {
5839         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5840             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5841                 die "ERROR: libvpx encoder version must be >=0.9.7";
5842     }
5843     enabled libvpx_vp9_decoder && {
5844         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5845             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5846                 disable libvpx_vp9_decoder;
5847     }
5848     enabled libvpx_vp9_encoder && {
5849         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5850             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5851                 disable libvpx_vp9_encoder;
5852     }
5853     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5854         die "libvpx enabled but no supported decoders found"
5855     fi
5856 }
5857
5858 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5859 enabled libwebp           && {
5860     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5861     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5862 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5863                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5864                                  warn "using libx264 without pkg-config"; } } &&
5865                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5866                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5867                              { check_cpp_condition x264.h "X264_MPEG2" &&
5868                                enable libx262; }
5869 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5870                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5871                                die "ERROR: libx265 version must be >= 68."; }
5872 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5873 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5874 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5875 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5876 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5877                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5878                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5879 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5880 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5881                                 { ! enabled cross_compile && {
5882                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5883                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5884                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5885                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5886                                die "ERROR: mmal not found"; }
5887 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5888
5889 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5890 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5891                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5892                                die "ERROR: openal not found"; } &&
5893                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5894                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5895 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5896                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5897                                die "ERROR: opencl not found"; } &&
5898                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5899                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5900                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5901 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5902                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5903                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5904                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5905                                die "ERROR: opengl not found."
5906                              }
5907 enabled omx_rpi && enable omx
5908 enabled omx               && { check_header OMX_Core.h ||
5909                                 { ! enabled cross_compile && enabled omx_rpi && {
5910                                     add_cflags -isystem/opt/vc/include/IL ; }
5911                                 check_header OMX_Core.h ; } ||
5912                                die "ERROR: OpenMAX IL headers not found"; }
5913 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5914                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5915                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5916                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5917                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5918                                die "ERROR: openssl not found"; }
5919 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5920
5921 # libdc1394 check
5922 if enabled libdc1394; then
5923     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5924         enable libdc1394_2; } ||
5925     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5926         enable libdc1394_1; } ||
5927     die "ERROR: No version of libdc1394 found "
5928 fi
5929
5930 if enabled gcrypt; then
5931     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5932     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5933         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5934         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5935         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5936             die "ERROR: gcrypt not found"
5937         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5938     else
5939         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5940     fi
5941 fi
5942
5943 disabled sdl && disable sdl2
5944 if ! disabled sdl2; then
5945     SDL2_CONFIG="${cross_prefix}sdl2-config"
5946     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5947         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5948         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5949         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5950     else
5951       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5952         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5953         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5954         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5955         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5956         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5957       fi
5958     fi
5959     if test $target_os = "mingw32"; then
5960         sdl2_libs="$sdl2_libs -mconsole"
5961     fi
5962 fi
5963 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5964
5965 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5966     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5967     enable securetransport; }
5968
5969 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5970                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5971
5972 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5973 enabled makeinfo \
5974     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5975     && enable makeinfo_html || disable makeinfo_html
5976 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5977 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5978 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5979 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5980
5981 check_header linux/fb.h
5982 check_header linux/videodev.h
5983 check_header linux/videodev2.h
5984 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5985
5986 check_header sys/videoio.h
5987 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5988
5989 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5990 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5991 # w32api 3.12 had it defined wrong
5992 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5993
5994 check_type "dshow.h" IBaseFilter
5995
5996 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5997 { check_header dev/bktr/ioctl_meteor.h &&
5998   check_header dev/bktr/ioctl_bt848.h; } ||
5999 { check_header machine/ioctl_meteor.h &&
6000   check_header machine/ioctl_bt848.h; } ||
6001 { check_header dev/video/meteor/ioctl_meteor.h &&
6002   check_header dev/video/bktr/ioctl_bt848.h; } ||
6003 check_header dev/ic/bt8xx.h
6004
6005 check_header sndio.h
6006 if check_struct sys/soundcard.h audio_buf_info bytes; then
6007     enable_safe sys/soundcard.h
6008 else
6009     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6010     #include <sys/soundcard.h>
6011     audio_buf_info abc;
6012 EOF
6013 fi
6014 check_header soundcard.h
6015
6016 enabled_any alsa_indev alsa_outdev &&
6017     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
6018
6019 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
6020     check_func jack_port_get_latency_range -ljack
6021
6022 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
6023
6024 if enabled libcdio; then
6025     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6026     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6027     die "ERROR: No usable libcdio/cdparanoia found"
6028 fi
6029
6030 enabled xlib &&
6031     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
6032
6033 if ! disabled libxcb; then
6034     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6035         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6036     } && enable libxcb
6037
6038 if enabled libxcb; then
6039     disabled libxcb_shm || {
6040         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6041             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6042         } && check_header sys/shm.h && enable libxcb_shm; }
6043
6044     disabled libxcb_xfixes || {
6045         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6046             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6047         } && enable libxcb_xfixes; }
6048
6049     disabled libxcb_shape || {
6050         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6051             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6052         } && enable libxcb_shape; }
6053
6054     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6055     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6056 fi
6057 fi
6058
6059 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6060
6061 enabled dxva2api_h &&
6062     check_cc <<EOF && enable dxva2api_cobj
6063 #define _WIN32_WINNT 0x0600
6064 #define COBJMACROS
6065 #include <windows.h>
6066 #include <d3d9.h>
6067 #include <dxva2api.h>
6068 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6069 EOF
6070
6071 enabled vaapi &&
6072     check_lib va/va.h vaInitialize -lva ||
6073     disable vaapi
6074
6075 enabled vaapi &&
6076     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6077     disable vaapi
6078
6079 if enabled vaapi ; then
6080     enabled xlib &&
6081     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6082     enable vaapi_x11
6083
6084     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6085     enable vaapi_drm
6086 fi
6087
6088 enabled vdpau &&
6089     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6090     disable vdpau
6091
6092 enabled vdpau && enabled xlib &&
6093     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6094     enable vdpau_x11
6095
6096 if enabled x86; then
6097     case $target_os in
6098         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6099             ;;
6100         *)
6101             disable cuda cuvid nvenc
6102             ;;
6103     esac
6104 else
6105     disable cuda cuvid nvenc
6106 fi
6107
6108 enabled nvenc &&
6109     check_cc -I$source_path <<EOF || disable nvenc
6110 #include "compat/nvenc/nvEncodeAPI.h"
6111 NV_ENCODE_API_FUNCTION_LIST flist;
6112 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6113 int main(void) { return 0; }
6114 EOF
6115
6116 # Funny iconv installations are not unusual, so check it after all flags have been set
6117 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6118
6119 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6120
6121 # add some useful compiler flags if supported
6122 check_cflags -Wdeclaration-after-statement
6123 check_cflags -Wall
6124 check_cflags -Wdisabled-optimization
6125 check_cflags -Wpointer-arith
6126 check_cflags -Wredundant-decls
6127 check_cflags -Wwrite-strings
6128 check_cflags -Wtype-limits
6129 check_cflags -Wundef
6130 check_cflags -Wmissing-prototypes
6131 check_cflags -Wno-pointer-to-int-cast
6132 check_cflags -Wstrict-prototypes
6133 check_cflags -Wempty-body
6134 enabled extra_warnings && check_cflags -Winline
6135 enabled extra_warnings && check_cflags -Wcast-qual
6136
6137 check_disable_warning(){
6138     warning_flag=-W${1#-Wno-}
6139     test_cflags $warning_flag && add_cflags $1
6140 }
6141
6142 check_disable_warning -Wno-parentheses
6143 check_disable_warning -Wno-switch
6144 check_disable_warning -Wno-format-zero-length
6145 check_disable_warning -Wno-pointer-sign
6146 check_disable_warning -Wno-unused-const-variable
6147
6148 # add some linker flags
6149 check_ldflags -Wl,--warn-common
6150 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6151 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6152 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6153 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6154
6155 # add some strip flags
6156 # -wN '..@*' is more selective than -x, but not available everywhere.
6157 check_stripflags -wN \'..@*\' || check_stripflags -x
6158
6159 enabled neon_clobber_test &&
6160     check_ldflags -Wl,--wrap,avcodec_open2              \
6161                   -Wl,--wrap,avcodec_decode_audio4      \
6162                   -Wl,--wrap,avcodec_decode_video2      \
6163                   -Wl,--wrap,avcodec_decode_subtitle2   \
6164                   -Wl,--wrap,avcodec_encode_audio2      \
6165                   -Wl,--wrap,avcodec_encode_video2      \
6166                   -Wl,--wrap,avcodec_send_packet        \
6167                   -Wl,--wrap,avcodec_receive_frame      \
6168                   -Wl,--wrap,avcodec_send_frame         \
6169                   -Wl,--wrap,avcodec_receive_packet     \
6170                   -Wl,--wrap,avcodec_encode_subtitle    \
6171                   -Wl,--wrap,swr_convert                \
6172                   -Wl,--wrap,avresample_convert ||
6173     disable neon_clobber_test
6174
6175 enabled xmm_clobber_test &&
6176     check_ldflags -Wl,--wrap,avcodec_open2              \
6177                   -Wl,--wrap,avcodec_decode_audio4      \
6178                   -Wl,--wrap,avcodec_decode_video2      \
6179                   -Wl,--wrap,avcodec_decode_subtitle2   \
6180                   -Wl,--wrap,avcodec_encode_audio2      \
6181                   -Wl,--wrap,avcodec_encode_video2      \
6182                   -Wl,--wrap,avcodec_encode_subtitle    \
6183                   -Wl,--wrap,avcodec_send_packet        \
6184                   -Wl,--wrap,avcodec_receive_frame      \
6185                   -Wl,--wrap,avcodec_send_frame         \
6186                   -Wl,--wrap,avcodec_receive_packet     \
6187                   -Wl,--wrap,swr_convert                \
6188                   -Wl,--wrap,avresample_convert         \
6189                   -Wl,--wrap,sws_scale ||
6190     disable xmm_clobber_test
6191
6192 check_ld "cc" <<EOF && enable proper_dce
6193 extern const int array[512];
6194 static inline int func(void) { return array[0]; }
6195 int main(void) { return 0; }
6196 EOF
6197
6198 if enabled proper_dce; then
6199     echo "X { local: *; };" > $TMPV
6200     if test_ldflags -Wl,${version_script},$TMPV; then
6201         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6202         check_cc <<EOF && enable symver_asm_label
6203 void ff_foo(void) __asm__ ("av_foo@VERSION");
6204 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6205 EOF
6206         check_cc <<EOF && enable symver_gnu_asm
6207 __asm__(".symver ff_foo,av_foo@VERSION");
6208 void ff_foo(void) {}
6209 EOF
6210     fi
6211 fi
6212
6213 if [ -z "$optflags" ]; then
6214     if enabled small; then
6215         optflags=$cflags_size
6216     elif enabled optimizations; then
6217         optflags=$cflags_speed
6218     else
6219         optflags=$cflags_noopt
6220     fi
6221 fi
6222
6223 check_optflags(){
6224     check_cflags "$@"
6225     enabled lto && check_ldflags "$@"
6226 }
6227
6228
6229 if enabled lto; then
6230     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6231     check_cflags  -flto
6232     check_ldflags -flto $cpuflags
6233     disable inline_asm_direct_symbol_refs
6234 fi
6235
6236 check_optflags $optflags
6237 check_optflags -fno-math-errno
6238 check_optflags -fno-signed-zeros
6239
6240 enabled ftrapv && check_cflags -ftrapv
6241
6242 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6243 int x;
6244 EOF
6245
6246
6247 if enabled icc; then
6248     # Just warnings, no remarks
6249     check_cflags -w1
6250     # -wd: Disable following warnings
6251     # 144, 167, 556: -Wno-pointer-sign
6252     # 188: enumerated type mixed with another type
6253     # 1292: attribute "foo" ignored
6254     # 1419: external declaration in primary source file
6255     # 10006: ignoring unknown option -fno-signed-zeros
6256     # 10148: ignoring unknown option -Wno-parentheses
6257     # 10156: ignoring option '-W'; no argument required
6258     # 13200: No EMMS instruction before call to function
6259     # 13203: No EMMS instruction before return from function
6260     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6261     # 11030: Warning unknown option --as-needed
6262     # 10156: ignoring option '-export'; no argument required
6263     check_ldflags -wd10156,11030
6264     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6265     enable ebp_available
6266     # The test above does not test linking
6267     enabled lto && disable symver_asm_label
6268     if enabled x86_32; then
6269         icc_version=$($cc -dumpversion)
6270         test ${icc_version%%.*} -ge 11 &&
6271             check_cflags -falign-stack=maintain-16-byte ||
6272             disable aligned_stack
6273     fi
6274 elif enabled ccc; then
6275     # disable some annoying warnings
6276     add_cflags -msg_disable bitnotint
6277     add_cflags -msg_disable mixfuncvoid
6278     add_cflags -msg_disable nonstandcast
6279     add_cflags -msg_disable unsupieee
6280 elif enabled gcc; then
6281     check_optflags -fno-tree-vectorize
6282     check_cflags -Werror=format-security
6283     check_cflags -Werror=implicit-function-declaration
6284     check_cflags -Werror=missing-prototypes
6285     check_cflags -Werror=return-type
6286     check_cflags -Werror=vla
6287     check_cflags -Wformat
6288     check_cflags -fdiagnostics-color=auto
6289     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6290 elif enabled llvm_gcc; then
6291     check_cflags -mllvm -stack-alignment=16
6292 elif enabled clang; then
6293     check_cflags -mllvm -stack-alignment=16
6294     check_cflags -mstack-alignment=16
6295     check_cflags -Qunused-arguments
6296     check_cflags -Werror=implicit-function-declaration
6297     check_cflags -Werror=missing-prototypes
6298     check_cflags -Werror=return-type
6299 elif enabled cparser; then
6300     add_cflags -Wno-missing-variable-declarations
6301     add_cflags -Wno-empty-statement
6302 elif enabled armcc; then
6303     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6304     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6305     # 2523: use of inline assembly is deprecated
6306     add_cflags -W${armcc_opt},--diag_suppress=2523
6307     add_cflags -W${armcc_opt},--diag_suppress=1207
6308     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6309     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6310     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6311     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6312 elif enabled tms470; then
6313     add_cflags -pds=824 -pds=837
6314     disable inline_asm
6315 elif enabled pathscale; then
6316     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6317 elif enabled_any msvc icl; then
6318     enabled x86_32 && disable aligned_stack
6319     enabled_all x86_32 debug && add_cflags -Oy-
6320     enabled debug && add_ldflags -debug
6321     enable pragma_deprecated
6322     if enabled icl; then
6323         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6324         # (correctly) on icl 13.x.
6325         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6326             add_cflags -Qansi-alias
6327         # Some inline asm is not compilable in debug
6328         if enabled debug; then
6329             disable ebp_available
6330             disable ebx_available
6331         fi
6332     fi
6333     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6334     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6335     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6336     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6337     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6338     # MSVC 2013 and newer can handle it fine.
6339     # If this declspec fails, force including stdlib.h before the restrict redefinition
6340     # happens in config.h.
6341     if [ $_restrict != restrict ]; then
6342         check_cc <<EOF || add_cflags -FIstdlib.h
6343 __declspec($_restrict) void* foo(int);
6344 EOF
6345     fi
6346     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6347     # Issue has been fixed in MSVC v19.00.24218.
6348     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6349         check_cflags -d2SSAOptimizer-
6350     # enable utf-8 source processing on VS2015 U2 and newer
6351     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6352         add_cflags -utf-8
6353 fi
6354
6355 for pfx in "" host_; do
6356     varname=${pfx%_}cc_type
6357     eval "type=\$$varname"
6358     if [ $type = "msvc" ]; then
6359         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6360 static inline int foo(int a) { return a; }
6361 EOF
6362     fi
6363 done
6364
6365 case $as_type in
6366     clang)
6367         add_asflags -Qunused-arguments
6368     ;;
6369 esac
6370
6371 case $ld_type in
6372     clang)
6373         check_ldflags -Qunused-arguments
6374     ;;
6375 esac
6376
6377 case $target_os in
6378     osf1)
6379         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6380     ;;
6381     plan9)
6382         add_cppflags -Dmain=plan9_main
6383     ;;
6384 esac
6385
6386 enable frame_thread_encoder
6387
6388 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6389
6390 check_deps $CONFIG_LIST       \
6391            $CONFIG_EXTRA      \
6392            $HAVE_LIST         \
6393            $ALL_COMPONENTS    \
6394
6395 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"
6396
6397
6398 if test $target_os = "haiku"; then
6399     disable memalign
6400     disable posix_memalign
6401 fi
6402
6403 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6404     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6405     enable dxva2_lib
6406
6407 ! enabled_any memalign posix_memalign aligned_malloc &&
6408     enabled simd_align_16 && enable memalign_hack
6409
6410 # add_dep lib dep
6411 # -> enable ${lib}_deps_${dep}
6412 # -> add $dep to ${lib}_deps only once
6413 add_dep() {
6414     lib=$1
6415     dep=$2
6416     enabled "${lib}_deps_${dep}" && return 0
6417     enable  "${lib}_deps_${dep}"
6418     prepend "${lib}_deps" $dep
6419 }
6420
6421 # merge deps lib components
6422 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6423 merge_deps() {
6424     lib=$1
6425     shift
6426     for comp in $*; do
6427         enabled $comp || continue
6428         eval "dep=\"\$${comp}_deps\""
6429         for d in $dep; do
6430             add_dep $lib $d
6431         done
6432     done
6433 }
6434
6435 merge_deps libavfilter $FILTER_LIST
6436
6437 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6438
6439 for thread in $THREADS_LIST; do
6440     if enabled $thread; then
6441         test -n "$thread_type" &&
6442             die "ERROR: Only one thread type must be selected." ||
6443             thread_type="$thread"
6444     fi
6445 done
6446
6447 if disabled stdatomic_h; then
6448     if enabled atomics_gcc; then
6449         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6450     elif enabled atomics_win32; then
6451         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6452     elif enabled atomics_suncc; then
6453         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6454     elif enabled pthreads; then
6455         add_compat atomics/pthread/stdatomic.o
6456         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6457     else
6458         enabled threads && die "Threading is enabled, but no atomics are available"
6459         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6460     fi
6461 fi
6462
6463 # Check if requested libraries were found.
6464 for lib in $AUTODETECT_LIBS; do
6465     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6466 done
6467
6468 enabled zlib && add_cppflags -DZLIB_CONST
6469
6470 # conditional library dependencies, in linking order
6471 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6472 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6473 enabled aresample_filter    && prepend avfilter_deps "swresample"
6474 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6475 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6476 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6477 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6478 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6479 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6480 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6481 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6482 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6483 enabled pan_filter          && prepend avfilter_deps "swresample"
6484 enabled pp_filter           && prepend avfilter_deps "postproc"
6485 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6486 enabled resample_filter && prepend avfilter_deps "avresample"
6487 enabled sab_filter          && prepend avfilter_deps "swscale"
6488 enabled scale_filter    && prepend avfilter_deps "swscale"
6489 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6490 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6491 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6492 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6493 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6494 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6495 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6496 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6497 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6498
6499 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6500
6501 enabled opus_decoder    && prepend avcodec_deps "swresample"
6502
6503 expand_deps(){
6504     lib_deps=${1}_deps
6505     eval "deps=\$$lib_deps"
6506     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6507     unique $lib_deps
6508 }
6509
6510 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6511 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6512
6513 map 'expand_deps $v' $LIBRARY_LIST
6514
6515 echo "install prefix            $prefix"
6516 echo "source path               $source_path"
6517 echo "C compiler                $cc"
6518 echo "C library                 $libc_type"
6519 if test "$host_cc" != "$cc"; then
6520     echo "host C compiler           $host_cc"
6521     echo "host C library            $host_libc_type"
6522 fi
6523 echo "ARCH                      $arch ($cpu)"
6524 if test "$build_suffix" != ""; then
6525     echo "build suffix              $build_suffix"
6526 fi
6527 if test "$progs_suffix" != ""; then
6528     echo "progs suffix              $progs_suffix"
6529 fi
6530 if test "$extra_version" != ""; then
6531     echo "version string suffix     $extra_version"
6532 fi
6533 echo "big-endian                ${bigendian-no}"
6534 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6535 if enabled x86; then
6536     echo "${yasmexe}                      ${yasm-no}"
6537     echo "MMX enabled               ${mmx-no}"
6538     echo "MMXEXT enabled            ${mmxext-no}"
6539     echo "3DNow! enabled            ${amd3dnow-no}"
6540     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6541     echo "SSE enabled               ${sse-no}"
6542     echo "SSSE3 enabled             ${ssse3-no}"
6543     echo "AESNI enabled             ${aesni-no}"
6544     echo "AVX enabled               ${avx-no}"
6545     echo "XOP enabled               ${xop-no}"
6546     echo "FMA3 enabled              ${fma3-no}"
6547     echo "FMA4 enabled              ${fma4-no}"
6548     echo "i686 features enabled     ${i686-no}"
6549     echo "CMOV is fast              ${fast_cmov-no}"
6550     echo "EBX available             ${ebx_available-no}"
6551     echo "EBP available             ${ebp_available-no}"
6552 fi
6553 if enabled aarch64; then
6554     echo "NEON enabled              ${neon-no}"
6555     echo "VFP enabled               ${vfp-no}"
6556 fi
6557 if enabled arm; then
6558     echo "ARMv5TE enabled           ${armv5te-no}"
6559     echo "ARMv6 enabled             ${armv6-no}"
6560     echo "ARMv6T2 enabled           ${armv6t2-no}"
6561     echo "VFP enabled               ${vfp-no}"
6562     echo "NEON enabled              ${neon-no}"
6563     echo "THUMB enabled             ${thumb-no}"
6564 fi
6565 if enabled mips; then
6566     echo "MIPS FPU enabled          ${mipsfpu-no}"
6567     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6568     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6569     echo "MIPS MSA enabled          ${msa-no}"
6570     echo "LOONGSON MMI enabled      ${mmi-no}"
6571 fi
6572 if enabled ppc; then
6573     echo "AltiVec enabled           ${altivec-no}"
6574     echo "VSX enabled               ${vsx-no}"
6575     echo "POWER8 enabled            ${power8-no}"
6576     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6577     echo "dcbzl available           ${dcbzl-no}"
6578 fi
6579 echo "debug symbols             ${debug-no}"
6580 echo "strip symbols             ${stripping-no}"
6581 echo "optimize for size         ${small-no}"
6582 echo "optimizations             ${optimizations-no}"
6583 echo "static                    ${static-no}"
6584 echo "shared                    ${shared-no}"
6585 echo "postprocessing support    ${postproc-no}"
6586 echo "new filter support        ${avfilter-no}"
6587 echo "network support           ${network-no}"
6588 echo "threading support         ${thread_type-no}"
6589 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6590 echo "SDL2 support              ${sdl2-no}"
6591 echo "opencl enabled            ${opencl-no}"
6592 echo "JNI support               ${jni-no}"
6593 echo "texi2html enabled         ${texi2html-no}"
6594 echo "perl enabled              ${perl-no}"
6595 echo "pod2man enabled           ${pod2man-no}"
6596 echo "makeinfo enabled          ${makeinfo-no}"
6597 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6598 test -n "$random_seed" &&
6599     echo "random seed               ${random_seed}"
6600 echo
6601
6602 echo "Enabled programs:"
6603 print_enabled '' $PROGRAM_LIST | print_in_columns
6604 echo
6605
6606 echo "External libraries:"
6607 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6608 echo
6609
6610 echo "External libraries providing hardware acceleration:"
6611 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6612 echo
6613
6614 echo "Libraries:"
6615 print_enabled '' $LIBRARY_LIST | print_in_columns
6616 echo
6617
6618 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6619     echo "Enabled ${type}s:"
6620     eval list=\$$(toupper $type)_LIST
6621     print_enabled '_*' $list | print_in_columns
6622     echo
6623 done
6624
6625 license="LGPL version 2.1 or later"
6626 if enabled nonfree; then
6627     license="nonfree and unredistributable"
6628 elif enabled gplv3; then
6629     license="GPL version 3 or later"
6630 elif enabled lgplv3; then
6631     license="LGPL version 3 or later"
6632 elif enabled gpl; then
6633     license="GPL version 2 or later"
6634 fi
6635
6636 echo "License: $license"
6637
6638 echo "Creating config.mak, config.h, and doc/config.texi..."
6639
6640 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6641
6642 enabled stripping || strip="echo skipping strip"
6643
6644 config_files="$TMPH config.mak doc/config.texi"
6645
6646 cat > config.mak <<EOF
6647 # Automatically generated by configure - do not modify!
6648 ifndef FFMPEG_CONFIG_MAK
6649 FFMPEG_CONFIG_MAK=1
6650 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6651 prefix=$prefix
6652 LIBDIR=\$(DESTDIR)$libdir
6653 SHLIBDIR=\$(DESTDIR)$shlibdir
6654 INCDIR=\$(DESTDIR)$incdir
6655 BINDIR=\$(DESTDIR)$bindir
6656 DATADIR=\$(DESTDIR)$datadir
6657 DOCDIR=\$(DESTDIR)$docdir
6658 MANDIR=\$(DESTDIR)$mandir
6659 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6660 INSTALL_NAME_DIR=$install_name_dir
6661 SRC_PATH=$source_path
6662 SRC_LINK=$source_link
6663 ifndef MAIN_MAKEFILE
6664 SRC_PATH:=\$(SRC_PATH:.%=..%)
6665 endif
6666 CC_IDENT=$cc_ident
6667 ARCH=$arch
6668 INTRINSICS=$intrinsics
6669 CC=$cc
6670 CXX=$cxx
6671 AS=$as
6672 OBJCC=$objcc
6673 LD=$ld
6674 DEPCC=$dep_cc
6675 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6676 DEPAS=$as
6677 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6678 YASM=$yasmexe
6679 DEPYASM=$yasmexe
6680 AR=$ar
6681 ARFLAGS=$arflags
6682 AR_O=$ar_o
6683 RANLIB=$ranlib
6684 STRIP=$strip
6685 CP=cp -p
6686 LN_S=$ln_s
6687 CPPFLAGS=$CPPFLAGS
6688 CFLAGS=$CFLAGS
6689 CXXFLAGS=$CXXFLAGS
6690 OBJCFLAGS=$OBJCFLAGS
6691 ASFLAGS=$ASFLAGS
6692 AS_C=$AS_C
6693 AS_O=$AS_O
6694 OBJCC_C=$OBJCC_C
6695 OBJCC_E=$OBJCC_E
6696 OBJCC_O=$OBJCC_O
6697 CC_C=$CC_C
6698 CC_E=$CC_E
6699 CC_O=$CC_O
6700 CXX_C=$CXX_C
6701 CXX_O=$CXX_O
6702 LD_O=$LD_O
6703 LD_LIB=$LD_LIB
6704 LD_PATH=$LD_PATH
6705 DLLTOOL=$dlltool
6706 WINDRES=$windres
6707 DEPWINDRES=$dep_cc
6708 DOXYGEN=$doxygen
6709 LDFLAGS=$LDFLAGS
6710 LDEXEFLAGS=$LDEXEFLAGS
6711 LDLIBFLAGS=$LDLIBFLAGS
6712 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6713 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6714 YASMFLAGS=$YASMFLAGS
6715 BUILDSUF=$build_suffix
6716 PROGSSUF=$progs_suffix
6717 FULLNAME=$FULLNAME
6718 LIBPREF=$LIBPREF
6719 LIBSUF=$LIBSUF
6720 LIBNAME=$LIBNAME
6721 SLIBPREF=$SLIBPREF
6722 SLIBSUF=$SLIBSUF
6723 EXESUF=$EXESUF
6724 EXTRA_VERSION=$extra_version
6725 CCDEP=$CCDEP
6726 CXXDEP=$CXXDEP
6727 CCDEP_FLAGS=$CCDEP_FLAGS
6728 ASDEP=$ASDEP
6729 ASDEP_FLAGS=$ASDEP_FLAGS
6730 CC_DEPFLAGS=$CC_DEPFLAGS
6731 AS_DEPFLAGS=$AS_DEPFLAGS
6732 HOSTCC=$host_cc
6733 HOSTLD=$host_ld
6734 HOSTCFLAGS=$host_cflags
6735 HOSTCPPFLAGS=$host_cppflags
6736 HOSTEXESUF=$HOSTEXESUF
6737 HOSTLDFLAGS=$host_ldflags
6738 HOSTLIBS=$host_libs
6739 DEPHOSTCC=$host_cc
6740 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6741 HOSTCCDEP=$HOSTCCDEP
6742 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6743 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6744 HOSTCC_C=$HOSTCC_C
6745 HOSTCC_O=$HOSTCC_O
6746 HOSTLD_O=$HOSTLD_O
6747 TARGET_EXEC=$target_exec $target_exec_args
6748 TARGET_PATH=$target_path
6749 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6750 CFLAGS-ffplay=${sdl2_cflags}
6751 ZLIB=$($ldflags_filter -lz)
6752 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6753 EXTRALIBS=$extralibs
6754 COMPAT_OBJS=$compat_objs
6755 EXEOBJS=$exeobjs
6756 INSTALL=$install
6757 LIBTARGET=${LIBTARGET}
6758 SLIBNAME=${SLIBNAME}
6759 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6760 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6761 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6762 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6763 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6764 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6765 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6766 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6767 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6768 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6769 NOREDZONE_FLAGS=$noredzone_flags
6770 EOF
6771
6772 get_version(){
6773     lcname=lib${1}
6774     name=$(toupper $lcname)
6775     file=$source_path/$lcname/version.h
6776     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6777     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6778     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6779     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6780     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6781     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6782 }
6783
6784 map 'get_version $v' $LIBRARY_LIST
6785
6786 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6787
6788 print_program_libs(){
6789     eval "program_libs=\$${1}_libs"
6790     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6791 }
6792
6793 map 'print_program_libs $v' $PROGRAM_LIST
6794
6795 cat > $TMPH <<EOF
6796 /* Automatically generated by configure - do not modify! */
6797 #ifndef FFMPEG_CONFIG_H
6798 #define FFMPEG_CONFIG_H
6799 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6800 #define FFMPEG_LICENSE "$(c_escape $license)"
6801 #define CONFIG_THIS_YEAR 2017
6802 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6803 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6804 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6805 #define av_restrict $_restrict
6806 #define EXTERN_PREFIX "${extern_prefix}"
6807 #define EXTERN_ASM ${extern_prefix}
6808 #define BUILDSUF "$build_suffix"
6809 #define SLIBSUF "$SLIBSUF"
6810 #define HAVE_MMX2 HAVE_MMXEXT
6811 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6812 EOF
6813
6814 test -n "$assert_level" &&
6815     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6816
6817 test -n "$malloc_prefix" &&
6818     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6819
6820 if enabled yasm; then
6821     append config_files $TMPASM
6822     printf '' >$TMPASM
6823 fi
6824
6825 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6826
6827
6828 mkdir -p doc
6829 mkdir -p tests
6830 mkdir -p tests/api
6831 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6832
6833 print_config ARCH_   "$config_files" $ARCH_LIST
6834 print_config HAVE_   "$config_files" $HAVE_LIST
6835 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6836                                      $CONFIG_EXTRA      \
6837                                      $ALL_COMPONENTS    \
6838
6839 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6840 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6841
6842 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6843 cp_if_changed $TMPH config.h
6844 touch .config
6845
6846 enabled yasm && cp_if_changed $TMPASM config.asm
6847
6848 cat > $TMPH <<EOF
6849 /* Generated by ffconf */
6850 #ifndef AVUTIL_AVCONFIG_H
6851 #define AVUTIL_AVCONFIG_H
6852 EOF
6853
6854 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6855
6856 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6857
6858 cp_if_changed $TMPH libavutil/avconfig.h
6859
6860 if test -n "$WARNINGS"; then
6861     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6862     enabled fatal_warnings && exit 1
6863 fi
6864
6865 # generate the lists of enabled components
6866 print_enabled_components(){
6867     file=$1
6868     struct_name=$2
6869     name=$3
6870     shift 3
6871     echo "static const $struct_name *$name[] = {" > $TMPH
6872     for c in $*; do
6873         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6874     done
6875     echo "    NULL };" >> $TMPH
6876     cp_if_changed $TMPH $file
6877 }
6878
6879 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6880 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6881
6882 # build pkg-config files
6883
6884 lib_version(){
6885     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6886 }
6887
6888 pkgconfig_generate(){
6889     name=$1
6890     shortname=${name#lib}${build_suffix}
6891     comment=$2
6892     version=$3
6893     libs=$4
6894     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6895     requires=${requires%, }
6896     enabled ${name#lib} || return 0
6897     mkdir -p $name
6898     cat <<EOF > $name/$name${build_suffix}.pc
6899 prefix=$prefix
6900 exec_prefix=\${prefix}
6901 libdir=$libdir
6902 includedir=$incdir
6903
6904 Name: $name
6905 Description: $comment
6906 Version: $version
6907 Requires: $(enabled shared || echo $requires)
6908 Requires.private: $(enabled shared && echo $requires)
6909 Conflicts:
6910 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6911 Libs.private: $(enabled shared && echo $libs)
6912 Cflags: -I\${includedir}
6913 EOF
6914
6915 mkdir -p doc/examples/pc-uninstalled
6916 includedir=${source_path}
6917 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6918     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6919 prefix=
6920 exec_prefix=
6921 libdir=\${pcfiledir}/../../../$name
6922 includedir=${includedir}
6923
6924 Name: $name
6925 Description: $comment
6926 Version: $version
6927 Requires: $requires
6928 Conflicts:
6929 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6930 Cflags: -I\${includedir}
6931 EOF
6932 }
6933
6934 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6935 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6936 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6937 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6938 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6939 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6940 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6941 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6942 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"